diff options
Diffstat (limited to 'VideoPreview/src/lib/ffmpeg')
| -rw-r--r-- | VideoPreview/src/lib/ffmpeg/avcodec.pas | 4831 | ||||
| -rw-r--r-- | VideoPreview/src/lib/ffmpeg/avformat.pas | 1904 | ||||
| -rw-r--r-- | VideoPreview/src/lib/ffmpeg/avio.pas | 731 | ||||
| -rw-r--r-- | VideoPreview/src/lib/ffmpeg/avutil.pas | 504 | ||||
| -rw-r--r-- | VideoPreview/src/lib/ffmpeg/error.pas | 113 | ||||
| -rw-r--r-- | VideoPreview/src/lib/ffmpeg/mathematics.pas | 119 | ||||
| -rw-r--r-- | VideoPreview/src/lib/ffmpeg/opt.pas | 263 | ||||
| -rw-r--r-- | VideoPreview/src/lib/ffmpeg/rational.pas | 174 | ||||
| -rw-r--r-- | VideoPreview/src/lib/ffmpeg/swscale.pas | 404 |
9 files changed, 9043 insertions, 0 deletions
diff --git a/VideoPreview/src/lib/ffmpeg/avcodec.pas b/VideoPreview/src/lib/ffmpeg/avcodec.pas new file mode 100644 index 00000000..7e55e13a --- /dev/null +++ b/VideoPreview/src/lib/ffmpeg/avcodec.pas @@ -0,0 +1,4831 @@ +(* + * copyright (c) 2001 Fabrice Bellard + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + *) + +(* + * This is a part of Pascal porting of ffmpeg. + * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows. + * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT + * in the source codes. + * - Changes and updates by the UltraStar Deluxe Team + *) + +(* + * Conversion of libavcodec/avcodec.h + * Min. version: 51.16.0, revision 6577, Sat Oct 7 15:30:46 2006 UTC + * Max. version: 52.67.2, revision 23191, Wed May 19 19:30 2010 CET + * + *) + +unit avcodec; + +{$IFDEF FPC} + {$MODE DELPHI } + {$PACKENUM 4} (* use 4-byte enums *) + {$PACKRECORDS C} (* C/C++-compatible record packing *) +{$ELSE} + {$MINENUMSIZE 4} (* use 4-byte enums *) +{$ENDIF} + +{$IFDEF DARWIN} + {$linklib libavcodec} +{$ENDIF} + +interface + +uses + ctypes, + avutil, + rational, + opt, + SysUtils, + {$IFDEF UNIX} + BaseUnix, + {$ENDIF} + UConfig; + +const + (* + * IMPORTANT: The official FFmpeg C headers change very quickly. Often some + * of the data structures are changed so that they become incompatible with + * older header files. The Pascal headers have to be adjusted to those changes, + * otherwise the application might crash randomly or strange bugs (not + * necessarily related to video or audio due to buffer overflows etc.) might + * occur. + * + * In the past users reported problems with USDX that took hours to fix and + * the problem was an unsupported version of FFmpeg. So we decided to disable + * support for future versions of FFmpeg until the headers are revised by us + * for that version as they otherwise most probably will break USDX. + * + * If the headers do not yet support your FFmpeg version you may want to + * adjust the max. version numbers manually but please note: it may work but + * in many cases it does not. The USDX team does NOT PROVIDE ANY SUPPORT + * for the game if the MAX. VERSION WAS CHANGED. + * + * The only safe way to support new versions of FFmpeg is to add the changes + * of the FFmpeg git repository C headers to the Pascal headers. + * You can accelerate this process by posting a patch with the git changes + * translated to Pascal to our bug tracker (please join our IRC chat before + * you start working on it). Simply adjusting the max. versions is NOT a valid + * fix. + *) + (* Max. supported version by this header *) + LIBAVCODEC_MAX_VERSION_MAJOR = 52; + LIBAVCODEC_MAX_VERSION_MINOR = 67; + LIBAVCODEC_MAX_VERSION_RELEASE = 2; + LIBAVCODEC_MAX_VERSION = (LIBAVCODEC_MAX_VERSION_MAJOR * VERSION_MAJOR) + + (LIBAVCODEC_MAX_VERSION_MINOR * VERSION_MINOR) + + (LIBAVCODEC_MAX_VERSION_RELEASE * VERSION_RELEASE); + + (* Min. supported version by this header *) + LIBAVCODEC_MIN_VERSION_MAJOR = 51; + LIBAVCODEC_MIN_VERSION_MINOR = 16; + LIBAVCODEC_MIN_VERSION_RELEASE = 0; + LIBAVCODEC_MIN_VERSION = (LIBAVCODEC_MIN_VERSION_MAJOR * VERSION_MAJOR) + + (LIBAVCODEC_MIN_VERSION_MINOR * VERSION_MINOR) + + (LIBAVCODEC_MIN_VERSION_RELEASE * VERSION_RELEASE); + +(* Check if linked versions are supported *) +{$IF (LIBAVCODEC_VERSION < LIBAVCODEC_MIN_VERSION)} + {$MESSAGE Error 'Linked version of libavcodec is too old!'} +{$IFEND} + +(* Check if linked version is supported *) +{$IF (LIBAVCODEC_VERSION > LIBAVCODEC_MAX_VERSION)} + {$MESSAGE Error 'Linked version of libavcodec is not yet supported!'} +{$IFEND} + +const + AV_NOPTS_VALUE: cint64 = $8000000000000000; + AV_TIME_BASE = 1000000; + AV_TIME_BASE_Q: TAVRational = (num: 1; den: AV_TIME_BASE); + +(** + * Identifies the syntax and semantics of the bitstream. + * The principle is roughly: + * Two decoders with the same ID can decode the same streams. + * Two encoders with the same ID can encode compatible streams. + * There may be slight deviations from the principle due to implementation + * details. + * + * If you add a codec ID to this list, add it so that + * 1. no value of a existing codec ID changes (that would break ABI), + * 2. it is as close as possible to similar codecs. + *) +type + TCodecID = ( + CODEC_ID_NONE, + + (* video codecs *) + CODEC_ID_MPEG1VIDEO, + CODEC_ID_MPEG2VIDEO, //* prefered ID for MPEG Video 1/2 decoding */ + CODEC_ID_MPEG2VIDEO_XVMC, + CODEC_ID_H261, + CODEC_ID_H263, + CODEC_ID_RV10, + CODEC_ID_RV20, + CODEC_ID_MJPEG, + CODEC_ID_MJPEGB, + CODEC_ID_LJPEG, + CODEC_ID_SP5X, + CODEC_ID_JPEGLS, + CODEC_ID_MPEG4, + CODEC_ID_RAWVIDEO, + CODEC_ID_MSMPEG4V1, + CODEC_ID_MSMPEG4V2, + CODEC_ID_MSMPEG4V3, + CODEC_ID_WMV1, + CODEC_ID_WMV2, + CODEC_ID_H263P, + CODEC_ID_H263I, + CODEC_ID_FLV1, + CODEC_ID_SVQ1, + CODEC_ID_SVQ3, + CODEC_ID_DVVIDEO, + CODEC_ID_HUFFYUV, + CODEC_ID_CYUV, + CODEC_ID_H264, + CODEC_ID_INDEO3, + CODEC_ID_VP3, + CODEC_ID_THEORA, + CODEC_ID_ASV1, + CODEC_ID_ASV2, + CODEC_ID_FFV1, + CODEC_ID_4XM, + CODEC_ID_VCR1, + CODEC_ID_CLJR, + CODEC_ID_MDEC, + CODEC_ID_ROQ, + CODEC_ID_INTERPLAY_VIDEO, + CODEC_ID_XAN_WC3, + CODEC_ID_XAN_WC4, + CODEC_ID_RPZA, + CODEC_ID_CINEPAK, + CODEC_ID_WS_VQA, + CODEC_ID_MSRLE, + CODEC_ID_MSVIDEO1, + CODEC_ID_IDCIN, + CODEC_ID_8BPS, + CODEC_ID_SMC, + CODEC_ID_FLIC, + CODEC_ID_TRUEMOTION1, + CODEC_ID_VMDVIDEO, + CODEC_ID_MSZH, + CODEC_ID_ZLIB, + CODEC_ID_QTRLE, + CODEC_ID_SNOW, + CODEC_ID_TSCC, + CODEC_ID_ULTI, + CODEC_ID_QDRAW, + CODEC_ID_VIXL, + CODEC_ID_QPEG, +{$IF LIBAVCODEC_VERSION_MAJOR < 53} + CODEC_ID_XVID, +{$IFEND} + CODEC_ID_PNG, + CODEC_ID_PPM, + CODEC_ID_PBM, + CODEC_ID_PGM, + CODEC_ID_PGMYUV, + CODEC_ID_PAM, + CODEC_ID_FFVHUFF, + CODEC_ID_RV30, + CODEC_ID_RV40, + CODEC_ID_VC1, + CODEC_ID_WMV3, + CODEC_ID_LOCO, + CODEC_ID_WNV1, + CODEC_ID_AASC, + CODEC_ID_INDEO2, + CODEC_ID_FRAPS, + CODEC_ID_TRUEMOTION2, + CODEC_ID_BMP, + CODEC_ID_CSCD, + CODEC_ID_MMVIDEO, + CODEC_ID_ZMBV, + CODEC_ID_AVS, + CODEC_ID_SMACKVIDEO, + CODEC_ID_NUV, + CODEC_ID_KMVC, + CODEC_ID_FLASHSV, + CODEC_ID_CAVS, + CODEC_ID_JPEG2000, + CODEC_ID_VMNC, + CODEC_ID_VP5, + CODEC_ID_VP6, + CODEC_ID_VP6F, + CODEC_ID_TARGA, + CODEC_ID_DSICINVIDEO, + CODEC_ID_TIERTEXSEQVIDEO, + CODEC_ID_TIFF, + CODEC_ID_GIF, + CODEC_ID_FFH264, + CODEC_ID_DXA, + CODEC_ID_DNXHD, + CODEC_ID_THP, + CODEC_ID_SGI, + CODEC_ID_C93, + CODEC_ID_BETHSOFTVID, + CODEC_ID_PTX, + CODEC_ID_TXD, + CODEC_ID_VP6A, + CODEC_ID_AMV, + CODEC_ID_VB, + CODEC_ID_PCX, + CODEC_ID_SUNRAST, + CODEC_ID_INDEO4, + CODEC_ID_INDEO5, + CODEC_ID_MIMIC, + CODEC_ID_RL2, + CODEC_ID_8SVX_EXP, + CODEC_ID_8SVX_FIB, + CODEC_ID_ESCAPE124, + CODEC_ID_DIRAC, + CODEC_ID_BFI, + CODEC_ID_CMV, + CODEC_ID_MOTIONPIXELS, + CODEC_ID_TGV, + CODEC_ID_TGQ, +{$IF LIBAVCODEC_VERSION >= 52012000} // >= 52.12.0 + CODEC_ID_TQI, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52022002} // >= 52.22.2 + CODEC_ID_AURA, + CODEC_ID_AURA2, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52027000} // >= 52.27.0 + CODEC_ID_V210X, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52028000} // >= 52.28.0 + CODEC_ID_TMV, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52029000} // >= 52.29.0 + CODEC_ID_V210, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52030002} // >= 52.30.2 + CODEC_ID_DPX, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52031002} // >= 52.31.2 + CODEC_ID_MAD, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52037000} // >= 52.37.0 + CODEC_ID_FRWU, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52041000} // >= 52.41.0 + CODEC_ID_FLASHSV2, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52043000} // >= 52.43.0 + CODEC_ID_CDGRAPHICS, + CODEC_ID_R210, +{$IFEND} + CODEC_ID_ANM, +{$IF LIBAVCODEC_VERSION >= 52049000} // >= 52.49.0 + CODEC_ID_BINKVIDEO, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52052000} // >= 52.52.0 + CODEC_ID_IFF_ILBM, + CODEC_ID_IFF_BYTERUN1, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52058000} // >= 52.58.0 + CODEC_ID_KGV1, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52062000} // >= 52.62.0 + CODEC_ID_YOP, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52067002} // >= 52.67.2 + CODEC_ID_VP8, +{$IFEND} + + //* various PCM "codecs" */ + CODEC_ID_PCM_S16LE= $10000, + CODEC_ID_PCM_S16BE, + CODEC_ID_PCM_U16LE, + CODEC_ID_PCM_U16BE, + CODEC_ID_PCM_S8, + CODEC_ID_PCM_U8, + CODEC_ID_PCM_MULAW, + CODEC_ID_PCM_ALAW, + CODEC_ID_PCM_S32LE, + CODEC_ID_PCM_S32BE, + CODEC_ID_PCM_U32LE, + CODEC_ID_PCM_U32BE, + CODEC_ID_PCM_S24LE, + CODEC_ID_PCM_S24BE, + CODEC_ID_PCM_U24LE, + CODEC_ID_PCM_U24BE, + CODEC_ID_PCM_S24DAUD, + CODEC_ID_PCM_ZORK, + CODEC_ID_PCM_S16LE_PLANAR, + CODEC_ID_PCM_DVD, + CODEC_ID_PCM_F32BE, + CODEC_ID_PCM_F32LE, + CODEC_ID_PCM_F64BE, + CODEC_ID_PCM_F64LE, +{$IF LIBAVCODEC_VERSION >= 52034000} // >= 52.34.0 + CODEC_ID_PCM_BLURAY, +{$IFEND} + + //* various ADPCM codecs */ + CODEC_ID_ADPCM_IMA_QT= $11000, + CODEC_ID_ADPCM_IMA_WAV, + CODEC_ID_ADPCM_IMA_DK3, + CODEC_ID_ADPCM_IMA_DK4, + CODEC_ID_ADPCM_IMA_WS, + CODEC_ID_ADPCM_IMA_SMJPEG, + CODEC_ID_ADPCM_MS, + CODEC_ID_ADPCM_4XM, + CODEC_ID_ADPCM_XA, + CODEC_ID_ADPCM_ADX, + CODEC_ID_ADPCM_EA, + CODEC_ID_ADPCM_G726, + CODEC_ID_ADPCM_CT, + CODEC_ID_ADPCM_SWF, + CODEC_ID_ADPCM_YAMAHA, + CODEC_ID_ADPCM_SBPRO_4, + CODEC_ID_ADPCM_SBPRO_3, + CODEC_ID_ADPCM_SBPRO_2, + CODEC_ID_ADPCM_THP, + CODEC_ID_ADPCM_IMA_AMV, + CODEC_ID_ADPCM_EA_R1, + CODEC_ID_ADPCM_EA_R3, + CODEC_ID_ADPCM_EA_R2, + CODEC_ID_ADPCM_IMA_EA_SEAD, + CODEC_ID_ADPCM_IMA_EA_EACS, + CODEC_ID_ADPCM_EA_XAS, + CODEC_ID_ADPCM_EA_MAXIS_XA, + CODEC_ID_ADPCM_IMA_ISS, + + //* AMR */ + CODEC_ID_AMR_NB= $12000, + CODEC_ID_AMR_WB, + + //* RealAudio codecs*/ + CODEC_ID_RA_144= $13000, + CODEC_ID_RA_288, + + //* various DPCM codecs */ + CODEC_ID_ROQ_DPCM= $14000, + CODEC_ID_INTERPLAY_DPCM, + CODEC_ID_XAN_DPCM, + CODEC_ID_SOL_DPCM, + + (* audio codecs *) + CODEC_ID_MP2= $15000, + CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3 + CODEC_ID_AAC, + {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0 + _CODEC_ID_MPEG4AAC, // will be redefined to CODEC_ID_AAC below + {$IFEND} + CODEC_ID_AC3, + CODEC_ID_DTS, + CODEC_ID_VORBIS, + CODEC_ID_DVAUDIO, + CODEC_ID_WMAV1, + CODEC_ID_WMAV2, + CODEC_ID_MACE3, + CODEC_ID_MACE6, + CODEC_ID_VMDAUDIO, + CODEC_ID_SONIC, + CODEC_ID_SONIC_LS, + CODEC_ID_FLAC, + CODEC_ID_MP3ADU, + CODEC_ID_MP3ON4, + CODEC_ID_SHORTEN, + CODEC_ID_ALAC, + CODEC_ID_WESTWOOD_SND1, + CODEC_ID_GSM, ///< as in Berlin toast format + CODEC_ID_QDM2, + CODEC_ID_COOK, + CODEC_ID_TRUESPEECH, + CODEC_ID_TTA, + CODEC_ID_SMACKAUDIO, + CODEC_ID_QCELP, + CODEC_ID_WAVPACK, + CODEC_ID_DSICINAUDIO, + CODEC_ID_IMC, + CODEC_ID_MUSEPACK7, + CODEC_ID_MLP, + CODEC_ID_GSM_MS, { as found in WAV } + CODEC_ID_ATRAC3, + CODEC_ID_VOXWARE, + CODEC_ID_APE, + CODEC_ID_NELLYMOSER, + CODEC_ID_MUSEPACK8, + CODEC_ID_SPEEX, + CODEC_ID_WMAVOICE, + CODEC_ID_WMAPRO, + CODEC_ID_WMALOSSLESS, + CODEC_ID_ATRAC3P, + CODEC_ID_EAC3, + CODEC_ID_SIPR, + CODEC_ID_MP1, +{$IF LIBAVCODEC_VERSION >= 52020000} // >= 52.20.0 + CODEC_ID_TWINVQ, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52022000} // >= 52.22.0 + CODEC_ID_TRUEHD, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52026000} // >= 52.26.0 + CODEC_ID_MP4ALS, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52035000} // >= 52.35.0 + CODEC_ID_ATRAC1, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52049000} // >= 52.49.0 + CODEC_ID_BINKAUDIO_RDFT, + CODEC_ID_BINKAUDIO_DCT, +{$IFEND} + + //* subtitle codecs */ + CODEC_ID_DVD_SUBTITLE= $17000, + CODEC_ID_DVB_SUBTITLE, + CODEC_ID_TEXT, ///< raw UTF-8 text + CODEC_ID_XSUB, + CODEC_ID_SSA, + CODEC_ID_MOV_TEXT, +{$IF LIBAVCODEC_VERSION >= 52033000} // >= 52.33.0 + CODEC_ID_HDMV_PGS_SUBTITLE, +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52037001} // >= 52.37.1 + CODEC_ID_DVB_TELETEXT, +{$IFEND} + + (* other specific kind of codecs (generally used for attachments) *) + CODEC_ID_TTF= $18000, + + CODEC_ID_PROBE= $19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it + + CODEC_ID_MPEG2TS= $20000, {*< _FAKE_ codec to indicate a raw MPEG-2 TS + * stream (only used by libavformat) *} + __CODEC_ID_4BYTE = $FFFFF // ensure 4-byte enum + ); + +{$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0 +{* CODEC_ID_MP3LAME is obsolete *} +const + CODEC_ID_MP3LAME = CODEC_ID_MP3; + CODEC_ID_MPEG4AAC = CODEC_ID_AAC; +{$IFEND} + +{$IF LIBAVCODEC_VERSION_MAJOR < 53} // < 53.0.0 +type + TCodecType = ( + CODEC_TYPE_UNKNOWN = -1, + CODEC_TYPE_VIDEO, + CODEC_TYPE_AUDIO, + CODEC_TYPE_DATA, + CODEC_TYPE_SUBTITLE, + CODEC_TYPE_ATTACHMENT, + CODEC_TYPE_NB + ); +{$IFEND} + +{ + TAVMediaType moved to avutil in LIBAVUTIL_VERSION 50.14.0 + but moving it in the pascal headers was not really necessary + but caused problems. So, I (KMS) left it here. +} +{$IF LIBAVCODEC_VERSION >= 52064000} // >= 52.64.0 +type + TAVMediaType = ( + AVMEDIA_TYPE_UNKNOWN = -1, + AVMEDIA_TYPE_VIDEO, + AVMEDIA_TYPE_AUDIO, + AVMEDIA_TYPE_DATA, + AVMEDIA_TYPE_SUBTITLE, + AVMEDIA_TYPE_ATTACHMENT, + AVMEDIA_TYPE_NB + ); +{$IFEND} + +{** + * all in native endian + *} +type + TSampleFormat = ( + SAMPLE_FMT_NONE = -1, + SAMPLE_FMT_U8, ///< unsigned 8 bits + SAMPLE_FMT_S16, ///< signed 16 bits + SAMPLE_FMT_S32, ///< signed 32 bits + SAMPLE_FMT_FLT, ///< float + SAMPLE_FMT_DBL, ///< double + SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if dynamically linking to libavcodec + ); + _TSampleFormatArray = array [0 .. MaxInt div SizeOf(TSampleFormat)-1] of TSampleFormat; + PSampleFormatArray = ^_TSampleFormatArray; + +const + {* Audio channel masks *} + CH_FRONT_LEFT = $00000001; + CH_FRONT_RIGHT = $00000002; + CH_FRONT_CENTER = $00000004; + CH_LOW_FREQUENCY = $00000008; + CH_BACK_LEFT = $00000010; + CH_BACK_RIGHT = $00000020; + CH_FRONT_LEFT_OF_CENTER = $00000040; + CH_FRONT_RIGHT_OF_CENTER = $00000080; + CH_BACK_CENTER = $00000100; + CH_SIDE_LEFT = $00000200; + CH_SIDE_RIGHT = $00000400; + CH_TOP_CENTER = $00000800; + CH_TOP_FRONT_LEFT = $00001000; + CH_TOP_FRONT_CENTER = $00002000; + CH_TOP_FRONT_RIGHT = $00004000; + CH_TOP_BACK_LEFT = $00008000; + CH_TOP_BACK_CENTER = $00010000; + CH_TOP_BACK_RIGHT = $00020000; + CH_STEREO_LEFT = $20000000; ///< Stereo downmix. + CH_STEREO_RIGHT = $40000000; ///< See CH_STEREO_LEFT. +{** Channel mask value used for AVCodecContext.request_channel_layout + * to indicate that the user requests the channel order of the decoder output + * to be the native codec channel order. + *} +{$IF LIBAVCODEC_VERSION >= 52038001} // >= 52.38.1 + CH_LAYOUT_NATIVE = $8000000000000000; +{$IFEND} + + {* Audio channel convenience macros *} + CH_LAYOUT_MONO = (CH_FRONT_CENTER); + CH_LAYOUT_STEREO = (CH_FRONT_LEFT or CH_FRONT_RIGHT); + CH_LAYOUT_SURROUND = (CH_LAYOUT_STEREO or CH_FRONT_CENTER); +{$IF LIBAVCODEC_VERSION >= 52027000} // >= 52.27.0 + CH_LAYOUT_2_1 = (CH_LAYOUT_STEREO or CH_BACK_CENTER); + CH_LAYOUT_4POINT0 = (CH_LAYOUT_SURROUND or CH_BACK_CENTER); + CH_LAYOUT_2_2 = (CH_LAYOUT_STEREO or CH_SIDE_LEFT or CH_SIDE_RIGHT); +{$IFEND} + CH_LAYOUT_QUAD = (CH_LAYOUT_STEREO or CH_BACK_LEFT or CH_BACK_RIGHT); + CH_LAYOUT_5POINT0 = (CH_LAYOUT_SURROUND or CH_SIDE_LEFT or CH_SIDE_RIGHT); + CH_LAYOUT_5POINT1 = (CH_LAYOUT_5POINT0 or CH_LOW_FREQUENCY); +{$IF LIBAVCODEC_VERSION >= 52025000} // >= 52.25.0 + CH_LAYOUT_5POINT0_BACK = (CH_LAYOUT_SURROUND or CH_BACK_LEFT or + CH_BACK_RIGHT); + CH_LAYOUT_5POINT1_BACK = (CH_LAYOUT_5POINT0_BACK or CH_LOW_FREQUENCY); +{$IFEND} +{$IF LIBAVCODEC_VERSION >= 52034000} // >= 52.34.0 + CH_LAYOUT_7POINT0 = (CH_LAYOUT_5POINT0 or CH_BACK_LEFT or CH_BACK_RIGHT); +{$IFEND} + CH_LAYOUT_7POINT1 = (CH_LAYOUT_5POINT1 or CH_BACK_LEFT or CH_BACK_RIGHT); +{$IF LIBAVCODEC_VERSION < 52025000} // < 52.25.0 + CH_LAYOUT_7POINT1_WIDE = (CH_LAYOUT_SURROUND or CH_LOW_FREQUENCY or + CH_BACK_LEFT or CH_BACK_RIGHT or +{$ELSE} + CH_LAYOUT_7POINT1_WIDE = (CH_LAYOUT_5POINT1_BACK or +{$IFEND} + CH_FRONT_LEFT_OF_CENTER or + CH_FRONT_RIGHT_OF_CENTER); + CH_LAYOUT_STEREO_DOWNMIX = (CH_STEREO_LEFT or CH_STEREO_RIGHT); + +{* in bytes *} + AVCODEC_MAX_AUDIO_FRAME_SIZE = 192000; // 1 second of 48khz 32bit audio + +{$IF LIBAVCODEC_VERSION <= 52056000} // <= 52.56.0 +{** + * Required number of additionally allocated bytes at the end of the input bitstream for decoding. + * This is mainly needed because some optimized bitstream readers read + * 32 or 64 bit at once and could read over the end.<br> + * Note: If the first 23 bits of the additional bytes are not 0, then damaged + * MPEG bitstreams could cause overread and segfault. + *} + FF_INPUT_BUFFER_PADDING_SIZE = 8; +{$ELSEIF LIBAVCODEC_VERSION < 52058000} // < 52.58.0 +{** + * Required number of additionally allocated bytes at the end of the input bitstream for decoding. + * The first 8 bytes are needed because some optimized bitstream readers read + * 32 or 64 bit at once and could read over the end. The remainder is to give + * decoders a reasonable amount of distance to work with before checking for + * buffer overreads.<br> + * Note: If the first 23 bits of the additional bytes are not 0, then damaged + * MPEG bitstreams could cause overread and segfault. + *} + FF_INPUT_BUFFER_PADDING_SIZE = 64; +{$ELSE} // >= 52.58.0} +{** + * Required number of additionally allocated bytes at the end of the input bitstream for decoding. + * This is mainly needed because some optimized bitstream readers read + * 32 or 64 bit at once and could read over the end.<br> + * Note: If the first 23 bits of the additional bytes are not 0, then damaged + * MPEG bitstreams could cause overread and segfault. + *} + FF_INPUT_BUFFER_PADDING_SIZE = 8; +{$IFEND} + +{** + * minimum encoding buffer size. + * Used to avoid some checks during header writing. + *} + FF_MIN_BUFFER_SIZE = 16384; + +type +{* + * motion estimation type. + *} + TMotion_Est_ID = ( + ME_ZERO = 1, ///< no search, that is use 0,0 vector whenever one is needed + ME_FULL, + ME_LOG, + ME_PHODS, + ME_EPZS, ///< enhanced predictive zonal search + ME_X1, ///< reserved for experiments + ME_HEX, ///< hexagon based search + ME_UMH, ///< uneven multi-hexagon search + ME_ITER, ///< iterative search + ME_TESA ///< transformed exhaustive search algorithm + ); + + TAVDiscard = ( + {* We leave some space between them for extensions (drop some + * keyframes for intra-only or drop just some bidir frames). + *} + AVDISCARD_NONE = -16, ///< discard nothing + AVDISCARD_DEFAULT = 0, ///< discard useless packets like 0 size packets in avi + AVDISCARD_NONREF = 8, ///< discard all non reference + AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames + AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes + AVDISCARD_ALL = 48 ///< discard all + ); + +{$IF LIBAVCODEC_VERSION >= 52028000} // >= 52.28.0 + TAVColorPrimaries = ( + AVCOL_PRI_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B + AVCOL_PRI_UNSPECIFIED = 2, + AVCOL_PRI_BT470M = 4, + AVCOL_PRI_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM + AVCOL_PRI_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC + AVCOL_PRI_SMPTE240M = 7, ///< functionally identical to above + AVCOL_PRI_FILM = 8, + AVCOL_PRI_NB ///< Not part of ABI + ); + + TAVColorTransferCharacteristic = ( + AVCOL_TRC_BT709 = 1, ///< also ITU-R BT1361 + AVCOL_TRC_UNSPECIFIED = 2, + AVCOL_TRC_GAMMA22 = 4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM + AVCOL_TRC_GAMMA28 = 5, ///< also ITU-R BT470BG + AVCOL_TRC_NB ///< Not part of ABI + ); + + TAVColorSpace = ( + AVCOL_SPC_RGB = 0, + AVCOL_SPC_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B + AVCOL_SPC_UNSPECIFIED = 2, + AVCOL_SPC_FCC = 4, + AVCOL_SPC_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601 + AVCOL_SPC_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above + AVCOL_SPC_SMPTE240M = 7, + AVCOL_SPC_NB ///< Not part of ABI + ); + + TAVColorRange = ( + AVCOL_RANGE_UNSPECIFIED = 0, + AVCOL_RANGE_MPEG = 1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges + AVCOL_RANGE_JPEG = 2, ///< the normal 2^n-1 "JPEG" YUV ranges + AVCOL_RANGE_NB ///< Not part of ABI + ); + +(** + * X X 3 4 X X are luma samples, + * 1 2 1-6 are possible chroma positions + * X X 5 6 X 0 is undefined/unknown position + *) + TAVChromaLocation = ( + AVCHROMA_LOC_UNSPECIFIED = 0, + AVCHROMA_LOC_LEFT = 1, ///< mpeg2/4, h264 default + AVCHROMA_LOC_CENTER = 2, ///< mpeg1, jpeg, h263 + AVCHROMA_LOC_TOPLEFT = 3, ///< DV + AVCHROMA_LOC_TOP = 4, + AVCHROMA_LOC_BOTTOMLEFT = 5, + AVCHROMA_LOC_BOTTOM = 6, + AVCHROMA_LOC_NB ///< Not part of ABI + ); +{$IFEND} + + PRcOverride = ^TRcOverride; + TRcOverride = record {16} + start_frame: cint; + end_frame: cint; + qscale: cint; // if this is 0 then quality_factor will be used instead + quality_factor: cfloat; + end; + +const + FF_MAX_B_FRAMES = 16; + +{* encoding support + These flags can be passed in AVCodecContext.flags before initialization. + Note: Not everything is supported yet. +*} + + CODEC_FLAG_QSCALE = $0002; ///< Use fixed qscale. + CODEC_FLAG_4MV = $0004; ///< 4 MV per MB allowed / advanced prediction for H263. + CODEC_FLAG_QPEL = $0010; ///< use qpel MC. + CODEC_FLAG_GMC = $0020; ///< use GMC. + CODEC_FLAG_MV0 = $0040; ///< always try a MB with MV=<0,0>. + CODEC_FLAG_PART = $0080; ///< Use data partitioning. + {** + * The parent program guarantees that the input for B-frames containing + * streams is not written to for at least s->max_b_frames+1 frames, if + * this is not set the input will be copied. + *} + CODEC_FLAG_INPUT_PRESERVED = $0100; + CODEC_FLAG_PASS1 = $0200; ///< use internal 2pass ratecontrol in first pass mode + CODEC_FLAG_PASS2 = $0400; ///< use internal 2pass ratecontrol in second pass mode + CODEC_FLAG_EXTERN_HUFF = $1000; ///< use external huffman table (for mjpeg) + CODEC_FLAG_GRAY = $2000; ///< only decode/encode grayscale + CODEC_FLAG_EMU_EDGE = $4000; ///< don't draw edges + CODEC_FLAG_PSNR = $8000; ///< error[?] variables will be set during encoding + CODEC_FLAG_TRUNCATED = $00010000; //** input bitstream might be truncated at a random location instead + // of only at frame boundaries */ + CODEC_FLAG_NORMALIZE_AQP = $00020000; ///< normalize adaptive quantization + CODEC_FLAG_INTERLACED_DCT = $00040000; ///< use interlaced dct + CODEC_FLAG_LOW_DELAY = $00080000; ///< force low delay + CODEC_FLAG_ALT_SCAN = $00100000; ///< use alternate scan + {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0 + CODEC_FLAG_TRELLIS_QUANT = $00200000; ///< use trellis quantization + {$IFEND} + CODEC_FLAG_GLOBAL_HEADER = $00400000; ///< place global headers in extradata instead of every keyframe + CODEC_FLAG_BITEXACT = $00800000; ///< use only bitexact stuff (except (i)dct) + {* Fx : Flag for h263+ extra options *} + {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0 + CODEC_FLAG_H263P_AIC = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this) + {$IFEND} + CODEC_FLAG_AC_PRED = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction + CODEC_FLAG_H263P_UMV = $02000000; ///< Unlimited motion vector + CODEC_FLAG_CBP_RD = $04000000; ///< use rate distortion optimization for cbp + CODEC_FLAG_QP_RD = $08000000; ///< use rate distortion optimization for qp selectioon + CODEC_FLAG_H263P_AIV = $00000008; ///< H263 Alternative inter vlc + CODEC_FLAG_OBMC = $00000001; ///< OBMC + CODEC_FLAG_LOOP_FILTER = $00000800; ///< loop filter + CODEC_FLAG_H263P_SLICE_STRUCT = $10000000; + CODEC_FLAG_INTERLACED_ME = $20000000; ///< interlaced motion estimation + CODEC_FLAG_SVCD_SCAN_OFFSET = $40000000; ///< will reserve space for SVCD scan offset user data + CODEC_FLAG_CLOSED_GOP = $80000000; + CODEC_FLAG2_FAST = $00000001; ///< allow non spec compliant speedup tricks + CODEC_FLAG2_STRICT_GOP = $00000002; ///< strictly enforce GOP size + CODEC_FLAG2_NO_OUTPUT = $00000004; ///< skip bitstream encoding + CODEC_FLAG2_LOCAL_HEADER = $00000008; ///< place global headers at every keyframe instead of in extradata + CODEC_FLAG2_BPYRAMID = $00000010; ///< H.264 allow b-frames to be used as references + CODEC_FLAG2_WPRED = $00000020; ///< H.264 weighted biprediction for b-frames + CODEC_FLAG2_MIXED_REFS = $00000040; ///< H.264 multiple references per partition + CODEC_FLAG2_8X8DCT = $00000080; ///< H.264 high profile 8x8 transform + CODEC_FLAG2_FASTPSKIP = $00000100; ///< H.264 fast pskip + CODEC_FLAG2_AUD = $00000200; ///< H.264 access unit delimiters + CODEC_FLAG2_BRDO = $00000400; ///< b-frame rate-distortion optimization + CODEC_FLAG2_INTRA_VLC = $00000800; ///< use MPEG-2 intra VLC table + CODEC_FLAG2_MEMC_ONLY = $00001000; ///< only do ME/MC (I frames -> ref, P frame -> ME+MC) + CODEC_FLAG2_DROP_FRAME_TIMECODE = $00002000; ///< timecode is in drop frame format. + CODEC_FLAG2_SKIP_RD = $00004000; ///< RD optimal MB level residual skipping + CODEC_FLAG2_CHUNKS = $00008000; ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries. + CODEC_FLAG2_NON_LINEAR_QUANT = $00010000; ///< Use MPEG-2 nonlinear quantizer. + CODEC_FLAG2_BIT_RESERVOIR = $00020000; ///< Use a bit reservoir when encoding if possible + {$IF LIBAVCODEC_VERSION >= 52043000} // >= 52.43.0 + CODEC_FLAG2_MBTREE = $00040000; ///< Use macroblock tree ratecontrol (x264 only) + {$IFEND} + {$IF LIBAVCODEC_VERSION >= 52061000} // >= 52.61.0 + CODEC_FLAG2_PSY = $00080000; ///< Use psycho visual optimizations. + CODEC_FLAG2_SSIM = $00100000; ///< Compute SSIM during encoding, error[] values are undefined. + {$IFEND} + {$IF LIBAVCODEC_VERSION >= 52067000} // >= 52.67.0 + CODEC_FLAG2_INTRA_REFRESH = $00200000; ///< Use periodic insertion of intra blocks instead of keyframes. + {$IFEND} + +(* Unsupported options : + * Syntax Arithmetic coding (SAC) + * Reference Picture Selection + * Independant Segment Decoding *) +(* /Fx *) +(* codec capabilities *) + + CODEC_CAP_DRAW_HORIZ_BAND = $0001; ///< decoder can use draw_horiz_band callback + (** + * Codec uses get_buffer() for allocating buffers and supports custom allocators. + * If not set, it might not use get_buffer() at all or use operations that + * assume the buffer was allocated by avcodec_default_get_buffer. + *) + CODEC_CAP_DR1 = $0002; + (* if 'parse_only' field is true, then avcodec_parse_frame() can be used *) + CODEC_CAP_PARSE_ONLY = $0004; + CODEC_CAP_TRUNCATED = $0008; + (* codec can export data for HW decoding (XvMC) *) + CODEC_CAP_HWACCEL = $0010; + (** + * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data. + * if this is not set, the codec is guranteed to never be feeded with NULL data + *) + CODEC_CAP_DELAY = $0020; + (** + * Codec can be fed a final frame with a smaller size. + * This can be used to prevent truncation of the last audio samples. + *) + CODEC_CAP_SMALL_LAST_FRAME = $0040; + + (** + * Codec can export data for HW decoding (VDPAU). + *) + CODEC_CAP_HWACCEL_VDPAU = $0080; + + {$IF LIBAVCODEC_VERSION >= 52035000} // >= 52.35.0 + (** + * Codec can output multiple frames per AVPacket + * Normally demuxers return one frame at a time, demuxers which do not do + * are connected to a parser to split what they return into proper frames. + * This flag is reserved to the very rare category of codecs which have a + * bitstream that cannot be split into frames without timeconsuming + * operations like full decoding. Demuxers carring such bitstreams thus + * may return multiple frames in a packet. This has many disadvantages like + * prohibiting stream copy in many cases thus it should only be considered + * as a last resort. + *) + CODEC_CAP_SUBFRAMES = $0100; + {$IFEND} + + //the following defines may change, don't expect compatibility if you use them + MB_TYPE_INTRA4x4 = $001; + MB_TYPE_INTRA16x16 = $002; //FIXME h264 specific + MB_TYPE_INTRA_PCM = $004; //FIXME h264 specific + MB_TYPE_16x16 = $008; + MB_TYPE_16x8 = $010; + MB_TYPE_8x16 = $020; + MB_TYPE_8x8 = $040; + MB_TYPE_INTERLACED = $080; + MB_TYPE_DIRECT2 = $100; //FIXME + MB_TYPE_ACPRED = $200; + MB_TYPE_GMC = $400; + MB_TYPE_SKIP = $800; + MB_TYPE_P0L0 = $1000; + MB_TYPE_P1L0 = $2000; + MB_TYPE_P0L1 = $4000; + MB_TYPE_P1L1 = $8000; + MB_TYPE_L0 = (MB_TYPE_P0L0 or MB_TYPE_P1L0); + MB_TYPE_L1 = (MB_TYPE_P0L1 or MB_TYPE_P1L1); + MB_TYPE_L0L1 = (MB_TYPE_L0 or MB_TYPE_L1); + MB_TYPE_QUANT = $0010000; + MB_TYPE_CBP = $0020000; + //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...) + +type +(** + * Pan Scan area. + * This specifies the area which should be displayed. + * Note there may be multiple such areas for one frame. + *) + PAVPanScan = ^TAVPanScan; + TAVPanScan = record {24} + (*** id. + * - encoding: set by user. + * - decoding: set by libavcodec. *) + id: cint; + + (*** width and height in 1/16 pel + * - encoding: set by user. + * - decoding: set by libavcodec. *) + width: cint; + height: cint; + + (*** position of the top left corner in 1/16 pel for up to 3 fields/frames. + * - encoding: set by user. + * - decoding: set by libavcodec. *) + position: array [0..2] of array [0..1] of smallint; + end; + +const + FF_QSCALE_TYPE_MPEG1 = 0; + FF_QSCALE_TYPE_MPEG2 = 1; + FF_QSCALE_TYPE_H264 = 2; + {$IF LIBAVCODEC_VERSION >= 52049000} // >= 52.49.0 + FF_QSCALE_TYPE_VP56 = 3; + {$IFEND} + + FF_BUFFER_TYPE_INTERNAL = 1; + FF_BUFFER_TYPE_USER = 2; ///< Direct rendering buffers (image is (de)allocated by user) + FF_BUFFER_TYPE_SHARED = 4; ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared + FF_BUFFER_TYPE_COPY = 8; ///< just a (modified) copy of some other buffer, don't dealloc anything. + + + FF_I_TYPE = 1; ///< Intra + FF_P_TYPE = 2; ///< Predicted + FF_B_TYPE = 3; ///< Bi-dir predicted + FF_S_TYPE = 4; ///< S(GMC)-VOP MPEG4 + FF_SI_TYPE = 5; ///< Switching Intra + FF_SP_TYPE = 6; ///< Switching Predicted + FF_BI_TYPE = 7; + + FF_BUFFER_HINTS_VALID = $01; // Buffer hints value is meaningful (if 0 ignore) + FF_BUFFER_HINTS_READABLE = $02; // Codec will read from buffer + FF_BUFFER_HINTS_PRESERVE = $04; // User must not alter buffer content + FF_BUFFER_HINTS_REUSABLE = $08; // Codec will reuse the buffer (update) + +const + {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0 + DEFAULT_FRAME_RATE_BASE = 1001000; + {$IFEND} + + FF_ASPECT_EXTENDED = 15; + + FF_RC_STRATEGY_XVID = 1; + + FF_BUG_AUTODETECT = 1; ///< autodetection + FF_BUG_OLD_MSMPEG4 = 2; + FF_BUG_XVID_ILACE = 4; + FF_BUG_UMP4 = 8; + FF_BUG_NO_PADDING = 16; + FF_BUG_AMV = 32; + FF_BUG_AC_VLC = 0; ///< will be removed, libavcodec can now handle these non compliant files by default + FF_BUG_QPEL_CHROMA = 64; + FF_BUG_STD_QPEL = 128; + FF_BUG_QPEL_CHROMA2 = 256; + FF_BUG_DIRECT_BLOCKSIZE = 512; + FF_BUG_EDGE = 1024; + FF_BUG_HPEL_CHROMA = 2048; + FF_BUG_DC_CLIP = 4096; + FF_BUG_MS = 8192; ///< workaround various bugs in microsofts broken decoders + {$IF LIBAVCODEC_VERSION >= 52054000} // >= 52.54.0 + FF_BUG_TRUNCATED = 16384; + {$IFEND} + //FF_BUG_FAKE_SCALABILITY = 16 //Autodetection should work 100%. + + FF_COMPLIANCE_VERY_STRICT = 2; ///< strictly conform to a older more strict version of the spec or reference software + FF_COMPLIANCE_STRICT = 1; ///< strictly conform to all the things in the spec no matter what consequences + FF_COMPLIANCE_NORMAL = 0; + FF_COMPLIANCE_INOFFICIAL = -1; ///< allow inofficial extensions + FF_COMPLIANCE_EXPERIMENTAL = -2; ///< allow non standarized experimental things + + FF_ER_CAREFUL = 1; + FF_ER_COMPLIANT = 2; + FF_ER_AGGRESSIVE = 3; + FF_ER_VERY_AGGRESSIVE = 4; + + FF_DCT_AUTO = 0; + FF_DCT_FASTINT = 1; + FF_DCT_INT = 2; + FF_DCT_MMX = 3; + FF_DCT_MLIB = 4; + FF_DCT_ALTIVEC = 5; + FF_DCT_FAAN = 6; + + FF_IDCT_AUTO = 0; + FF_IDCT_INT = 1; + FF_IDCT_SIMPLE = 2; + FF_IDCT_SIMPLEMMX = 3; + FF_IDCT_LIBMPEG2MMX = 4; + FF_IDCT_PS2 = 5; + FF_IDCT_MLIB = 6; + FF_IDCT_ARM = 7; + FF_IDCT_ALTIVEC = 8; + FF_IDCT_SH4 = 9; + FF_IDCT_SIMPLEARM = 10; + FF_IDCT_H264 = 11; + FF_IDCT_VP3 = 12; + FF_IDCT_IPP = 13; + FF_IDCT_XVIDMMX = 14; + FF_IDCT_CAVS = 15; + FF_IDCT_SIMPLEARMV5TE= 16; + FF_IDCT_SIMPLEARMV6 = 17; + FF_IDCT_SIMPLEVIS = 18; + FF_IDCT_WMV2 = 19; + FF_IDCT_FAAN = 20; + FF_IDCT_EA = 21; + FF_IDCT_SIMPLENEON = 22; + FF_IDCT_SIMPLEALPHA = 23; + {$IF LIBAVCODEC_VERSION >= 52055000} // >= 52.55.0 + FF_IDCT_BINK = 24; + {$IFEND} + + FF_EC_GUESS_MVS = 1; + FF_EC_DEBLOCK = 2; + + FF_MM_FORCE = $80000000; (* force usage of selected flags (OR) *) + (* lower 16 bits - CPU features *) + FF_MM_MMX = $0001; ///< standard MMX + FF_MM_3DNOW = $0004; ///< AMD 3DNOW + {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} + FF_MM_MMXEXT = $0002; ///< SSE integer functions or AMD MMX ext + {$IFEND} + {$IF LIBAVCODEC_VERSION >= 52024000} // >= 52.24.0 + FF_MM_MMX2 = $0002; ///< SSE integer functions or AMD MMX ext + {$IFEND} + FF_MM_SSE = $0008; ///< SSE functions + FF_MM_SSE2 = $0010; ///< PIV SSE2 functions + FF_MM_3DNOWEXT = $0020; ///< AMD 3DNowExt + FF_MM_SSE3 = $0040; ///< Prescott SSE3 functions + FF_MM_SSSE3 = $0080; ///< Conroe SSSE3 functions + {$IF LIBAVCODEC_VERSION >= 52022003} // >= 52.22.3 + FF_MM_SSE4 = $0100; ///< Penryn SSE4.1 functions + FF_MM_SSE42 = $0200; ///< Nehalem SSE4.2 functions + {$IFEND} + FF_MM_IWMMXT = $0100; ///< XScale IWMMXT + FF_MM_ALTIVEC = $0001; ///< standard AltiVec + + FF_PRED_LEFT = 0; + FF_PRED_PLANE = 1; + FF_PRED_MEDIAN = 2; + + FF_DEBUG_PICT_INFO = 1; + FF_DEBUG_RC = 2; + FF_DEBUG_BITSTREAM = 4; + FF_DEBUG_MB_TYPE = 8; + FF_DEBUG_QP = 16; + FF_DEBUG_MV = 32; + FF_DEBUG_DCT_COEFF = $00000040; + FF_DEBUG_SKIP = $00000080; + FF_DEBUG_STARTCODE = $00000100; + FF_DEBUG_PTS = $00000200; + FF_DEBUG_ER = $00000400; + FF_DEBUG_MMCO = $00000800; + FF_DEBUG_BUGS = $00001000; + FF_DEBUG_VIS_QP = $00002000; + FF_DEBUG_VIS_MB_TYPE = $00004000; + FF_DEBUG_BUFFERS = $00008000; + + FF_DEBUG_VIS_MV_P_FOR = $00000001; //visualize forward predicted MVs of P frames + FF_DEBUG_VIS_MV_B_FOR = $00000002; //visualize forward predicted MVs of B frames + FF_DEBUG_VIS_MV_B_BACK = $00000004; //visualize backward predicted MVs of B frames + + FF_CMP_SAD = 0; + FF_CMP_SSE = 1; + FF_CMP_SATD = 2; + FF_CMP_DCT = 3; + FF_CMP_PSNR = 4; + FF_CMP_BIT = 5; + FF_CMP_RD = 6; + FF_CMP_ZERO = 7; + FF_CMP_VSAD = 8; + FF_CMP_VSSE = 9; + FF_CMP_NSSE = 10; + FF_CMP_W53 = 11; + FF_CMP_W97 = 12; + FF_CMP_DCTMAX = 13; + FF_CMP_DCT264 = 14; + FF_CMP_CHROMA = 256; + + FF_DTG_AFD_SAME = 8; + FF_DTG_AFD_4_3 = 9; + FF_DTG_AFD_16_9 = 10; + FF_DTG_AFD_14_9 = 11; + FF_DTG_AFD_4_3_SP_14_9 = 13; + FF_DTG_AFD_16_9_SP_14_9 = 14; + FF_DTG_AFD_SP_4_3 = 15; + + FF_DEFAULT_QUANT_BIAS = 999999; + + FF_LAMBDA_SHIFT = 7; + FF_LAMBDA_SCALE = (1 shl FF_LAMBDA_SHIFT); + FF_QP2LAMBDA = 118; ///< factor to convert from H.263 QP to lambda + FF_LAMBDA_MAX = (256 * 128 - 1); + + FF_QUALITY_SCALE = FF_LAMBDA_SCALE; //FIXME maybe remove + + FF_CODER_TYPE_VLC = 0; + FF_CODER_TYPE_AC = 1; + FF_CODER_TYPE_RAW = 2; + FF_CODER_TYPE_RLE = 3; + FF_CODER_TYPE_DEFLATE = 4; + + SLICE_FLAG_CODED_ORDER = $0001; ///< draw_horiz_band() is called in coded order instead of display + SLICE_FLAG_ALLOW_FIELD = $0002; ///< allow draw_horiz_band() with field slices (MPEG2 field pics) + SLICE_FLAG_ALLOW_PLANE = $0004; ///< allow draw_horiz_band() with 1 component at a time (SVQ1) + + FF_MB_DECISION_SIMPLE = 0; ///< uses mb_cmp + FF_MB_DECISION_BITS = 1; ///< chooses the one which needs the fewest bits + FF_MB_DECISION_RD = 2; ///< rate distortion + + FF_AA_AUTO = 0; + FF_AA_FASTINT = 1; //not implemented yet + FF_AA_INT = 2; + FF_AA_FLOAT = 3; + + FF_PROFILE_UNKNOWN = -99; + FF_PROFILE_AAC_MAIN = 0; + FF_PROFILE_AAC_LOW = 1; + FF_PROFILE_AAC_SSR = 2; + FF_PROFILE_AAC_LTP = 3; + + FF_LEVEL_UNKNOWN = -99; + + X264_PART_I4X4 = $001; (* Analyse i4x4 *) + X264_PART_I8X8 = $002; (* Analyse i8x8 (requires 8x8 transform) *) + X264_PART_P8X8 = $010; (* Analyse p16x8, p8x16 and p8x8 *) + X264_PART_P4X4 = $020; (* Analyse p8x4, p4x8, p4x4 *) + X264_PART_B8X8 = $100; (* Analyse b16x8, b8x16 and b8x8 *) + + FF_COMPRESSION_DEFAULT = -1; + +{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} +const + AVPALETTE_SIZE = 1024; + AVPALETTE_COUNT = 256; + +type +(** + * AVPaletteControl + * This structure defines a method for communicating palette changes + * between and demuxer and a decoder. + * + * @deprecated Use AVPacket to send palette changes instead. + * This is totally broken. + *) + PAVPaletteControl = ^TAVPaletteControl; + TAVPaletteControl = record + (* demuxer sets this to 1 to indicate the palette has changed; + * decoder resets to 0 *) + palette_changed: cint; + + (* 4-byte ARGB palette entries, stored in native byte order; note that + * the individual palette components should be on a 8-bit scale; if + * the palette data comes from a IBM VGA native format, the component + * data is probably 6 bits in size and needs to be scaled *) + palette: array [0..AVPALETTE_COUNT - 1] of cuint; + end; {deprecated;} +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 52023000} // >= 52.23.0 +type + PAVPacket = ^TAVPacket; + TAVPacket = record +(* + * Presentation timestamp in AVStream->time_base units; the time at which + * the decompressed packet will be presented to the user. + * Can be AV_NOPTS_VALUE if it is not stored in the file. + * pts MUST be larger or equal to dts as presentation cannot happen before + * decompression, unless one wants to view hex dumps. Some formats misuse + * the terms dts and pts/cts to mean something different. Such timestamps + * must be converted to true pts/dts before they are stored in AVPacket. + *) + pts: cint64; +(* + * Decompression timestamp in AVStream->time_base units; the time at which + * the packet is decompressed. + * Can be AV_NOPTS_VALUE if it is not stored in the file. + *) + dts: cint64; + data: PByteArray; + size: cint; + stream_index: cint; + flags: cint; +(* + * Duration of this packet in AVStream->time_base units, 0 if unknown. + * Equals next_pts - this_pts in presentation order. + *) + duration: cint; + destruct: procedure (para1: PAVPacket); cdecl; + priv: pointer; + pos: cint64; // byte position in stream, -1 if unknown + +(* + * Time difference in AVStream->time_base units from the pts of this + * packet to the point at which the output from the decoder has converged + * independent from the availability of previous frames. That is, the + * frames are virtually identical no matter if decoding started from + * the very first frame or from this keyframe. + * Is AV_NOPTS_VALUE if unknown. + * This field is not the display duration of the current packet. + * + * The purpose of this field is to allow seeking in streams that have no + * keyframes in the conventional sense. It corresponds to the + * recovery point SEI in H.264 and match_time_delta in NUT. It is also + * essential for some types of subtitle streams to ensure that all + * subtitles are correctly displayed after seeking. + *) + convergence_duration: cint64; + end; + +const + {$IF LIBAVCODEC_VERSION < 52030002} // < 52.30.2 + PKT_FLAG_KEY = $0001; + {$ELSE} + AV_PKT_FLAG_KEY = $0001; + {$IF LIBAVCODEC_VERSION_MAJOR < 53} + PKT_FLAG_KEY = AV_PKT_FLAG_KEY; + {$IFEND} + {$IFEND} +{$IFEND} + +type + PAVClass = ^TAVClass; {const} + PAVCodecContext = ^TAVCodecContext; + + PAVCodec = ^TAVCodec; + +{$IF LIBAVCODEC_VERSION >= 52018000} // >= 52.18.0 + PAVHWAccel = ^TAVHWAccel; +{$IFEND} + + // int[4] + PQuadIntArray = ^TQuadIntArray; + TQuadIntArray = array[0..3] of cint; + // int (*func)(struct AVCodecContext *c2, void *arg) + TExecuteFunc = function(c2: PAVCodecContext; arg: Pointer): cint; cdecl; +{$IF LIBAVCODEC_VERSION >= 52037000} // >= 52.37.0 + // int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr) + TExecute2Func = function(c2: PAVCodecContext; arg: Pointer; jobnr: cint; threadnr: cint): cint; cdecl; +{$IFEND} + + TAVClass = record + class_name: PAnsiChar; + (* actually passing a pointer to an AVCodecContext + or AVFormatContext, which begin with an AVClass. + Needed because av_log is in libavcodec and has no visibility + of AVIn/OutputFormat *) + item_name: function(): PAnsiChar; cdecl; + option: PAVOption; + +{$IF LIBAVUTIL_VERSION >= 50015000} // 50.15.0 + (** + * LIBAVUTIL_VERSION with which this structure was created. + * This is used to allow fields to be added without requiring major + * version bumps everywhere. + *) + version: cint; +{$IFEND} + +{$IF LIBAVUTIL_VERSION >= 50015002} // 50.15.2 + (** + * Offset in the structure where log_level_offset is stored. + * 0 means there is no such variable + *) + log_level_offset_offset: cint; +{$IFEND} + end; + + {** + * Audio Video Frame. + * New fields can be added to the end of FF_COMMON_FRAME with minor version + * bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. No fields should be added into AVFrame before or after + * FF_COMMON_FRAME! + * sizeof(AVFrame) must not be used outside libav*. + *} + PAVFrame = ^TAVFrame; + TAVFrame = record {200} + (** + * pointer to the picture planes. + * This might be different from the first allocated byte + * - encoding: + * - decoding: + *) + data: array [0..3] of pbyte; + linesize: array [0..3] of cint; + (** + * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer. + * This isn't used by libavcodec unless the default get/release_buffer() is used. + * - encoding: + * - decoding: + *) + base: array [0..3] of pbyte; + (** + * 1 -> keyframe, 0-> not + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. + *) + key_frame: cint; + (** + * Picture type of the frame, see ?_TYPE below. + * - encoding: Set by libavcodec. for coded_picture (and set by user for input). + * - decoding: Set by libavcodec. + *) + pict_type: cint; + (** + * presentation timestamp in time_base units (time when frame should be shown to user) + * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed. + * - encoding: MUST be set by user. + * - decoding: Set by libavcodec. + *) + pts: cint64; + (** + * picture number in bitstream order + * - encoding: set by + * - decoding: Set by libavcodec. + *) + coded_picture_number: cint; + (** + * picture number in display order + * - encoding: set by + * - decoding: Set by libavcodec. + *) + display_picture_number: cint; + (** + * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) + * - encoding: Set by libavcodec. for coded_picture (and set by user for input). + * - decoding: Set by libavcodec. + *) + quality: cint; + (** + * buffer age (1->was last buffer and dint change, 2->..., ...). + * Set to INT_MAX if the buffer has not been used yet. + * - encoding: unused + * - decoding: MUST be set by get_buffer(). + *) + age: cint; + (** + * is this picture used as reference + * The values for this are the same as the MpegEncContext.picture_structure + * variable, that is 1->top field, 2->bottom field, 3->frame/both fields. + * Set to 4 for delayed, non-reference frames. + * - encoding: unused + * - decoding: Set by libavcodec. (before get_buffer() call)). + *) + reference: cint; + (** + * QP table + * - encoding: unused + * - decoding: Set by libavcodec. + *) + qscale_table: PShortint; + (** + * QP store stride + * - encoding: unused + * - decoding: Set by libavcodec. + *) + qstride: cint; + (** + * mbskip_table[mb]>=1 if MB didn't change + * stride= mb_width = (width+15)>>4 + * - encoding: unused + * - decoding: Set by libavcodec. + *) + mbskip_table: pbyte; + (** + * motion vector table + * @code + * example: + * int mv_sample_log2= 4 - motion_subsample_log2; + * int mb_width= (width+15)>>4; + * int mv_stride= (mb_width << mv_sample_log2) + 1; + * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y]; + * @endcode + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + //int16_t (*motion_val[2])[2]; + motion_val: array [0..1] of pointer; + (** + * macroblock type table + * mb_type_base + mb_width + 2 + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + mb_type: PCuint; + (** + * log2 of the size of the block which a single vector in motion_val represents: + * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2) + * - encoding: unused + * - decoding: Set by libavcodec. + *) + motion_subsample_log2: byte; + (** + * for some private data of the user + * - encoding: unused + * - decoding: Set by user. + *) + opaque: pointer; + (** + * error + * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR. + * - decoding: unused + *) + error: array [0..3] of cuint64; + (** + * type of the buffer (to keep track of who has to deallocate data[*]) + * - encoding: Set by the one who allocates it. + * - decoding: Set by the one who allocates it. + * Note: User allocated (direct rendering) & internal buffers cannot coexist currently. + *) + type_: cint; + (** + * When decoding, this signals how much the picture must be delayed. + * extra_delay = repeat_pict / (2*fps) + * - encoding: unused + * - decoding: Set by libavcodec. + *) + repeat_pict: cint; + (** + * + *) + qscale_type: cint; + (** + * The content of the picture is interlaced. + * - encoding: Set by user. + * - decoding: Set by libavcodec. (default 0) + *) + interlaced_frame: cint; + (** + * If the content is interlaced, is top field displayed first. + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + top_field_first: cint; + (** + * Pan scan. + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + pan_scan: PAVPanScan; + (** + * Tell user application that palette has changed from previous frame. + * - encoding: ??? (no palette-enabled encoder yet) + * - decoding: Set by libavcodec. (default 0). + *) + palette_has_changed: cint; + (** + * codec suggestion on buffer type if != 0 + * - encoding: unused + * - decoding: Set by libavcodec. (before get_buffer() call)). + *) + buffer_hints: cint; + (** + * DCT coefficients + * - encoding: unused + * - decoding: Set by libavcodec. + *) + dct_coeff: PsmallInt; + (** + * motion reference frame index + * the order in which these are stored can depend on the codec. + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + ref_index: array [0..1] of PShortint; + + {$IF LIBAVCODEC_VERSION >= 51068000} // >= 51.68.0 + (** + * reordered opaque 64bit number (generally a PTS) from AVCodecContext.reordered_opaque + * output in AVFrame.reordered_opaque + * - encoding: unused + * - decoding: Read by user. + *) + reordered_opaque: cint64; + {$IFEND} + + {$IF LIBAVCODEC_VERSION = 52021000} // = 52.21.0 + (** + * hardware accelerator private data (FFmpeg allocated) + * - encoding: unused + * - decoding: Set by libavcodec + *) + hwaccel_data_private: pointer; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 52022000} // >= 52.22.0 + hwaccel_picture_private: pointer; + {$IFEND} + + end; + + (** + * main external API structure. + * New fields can be added to the end with minor version bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. + * sizeof(AVCodecContext) must not be used outside libav*. + *) + TAVCodecContext = record {720} + (** + * information on struct for av_log + * - set by avcodec_alloc_context + *) + av_class: PAVClass; + (** + * the average bitrate + * - encoding: Set by user; unused for constant quantizer encoding. + * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream. + *) + bit_rate: cint; + + (** + * number of bits the bitstream is allowed to diverge from the reference. + * the reference can be CBR (for CBR pass1) or VBR (for pass2) + * - encoding: Set by user; unused for constant quantizer encoding. + * - decoding: unused + *) + bit_rate_tolerance: cint; + + (** + * CODEC_FLAG_*. + * - encoding: Set by user. + * - decoding: Set by user. + *) + flags: cint; + + (** + * Some codecs need additional format info. It is stored here. + * If any muxer uses this then ALL demuxers/parsers AND encoders for the + * specific codec MUST set it correctly otherwise stream copy breaks. + * In general use of this field by muxers is not recommanded. + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. (FIXME: Is this OK?) + *) + sub_id: cint; + + (** + * Motion estimation algorithm used for video coding. + * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex), + * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific] + * - encoding: MUST be set by user. + * - decoding: unused + *) + me_method: cint; + + (** + * some codecs need / can use extradata like Huffman tables. + * mjpeg: Huffman tables + * rv10: additional flags + * mpeg4: global headers (they can be in the bitstream or here) + * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger + * than extradata_size to avoid prolems if it is read with the bitstream reader. + * The bytewise contents of extradata must not depend on the architecture or CPU endianness. + * - encoding: Set/allocated/freed by libavcodec. + * - decoding: Set/allocated/freed by user. + *) + extradata: pbyte; + extradata_size: cint; + + (** + * This is the fundamental unit of time (in seconds) in terms + * of which frame timestamps are represented. For fixed-fps content, + * timebase should be 1/framerate and timestamp increments should be + * identically 1. + * - encoding: MUST be set by user. + * - decoding: Set by libavcodec. + *) + time_base: TAVRational; + + (* video only *) + (** + * picture width / height. + * - encoding: MUST be set by user. + * - decoding: Set by libavcodec. + * Note: For compatibility it is possible to set this instead of + * coded_width/height before decoding. + *) + width, height: cint; + + (** + * the number of pictures in a group of pictures, or 0 for intra_only + * - encoding: Set by user. + * - decoding: unused + *) + gop_size: cint; + + (** + * Pixel format, see PIX_FMT_xxx. + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + pix_fmt: TAVPixelFormat; + + (** + * Frame rate emulation. If not zero, the lower layer (i.e. format handler) + * has to read frames at native frame rate. + * - encoding: Set by user. + * - decoding: unused + *) + rate_emu: cint; + + (** + * If non NULL, 'draw_horiz_band' is called by the libavcodec + * decoder to draw a horizontal band. It improves cache usage. Not + * all codecs can do that. You must check the codec capabilities + * beforehand. + * The function is also used by hardware acceleration APIs. + * It is called at least once during frame decoding to pass + * the data needed for hardware render. + * In that mode instead of pixel data, AVFrame points to + * a structure specific to the acceleration API. The application + * reads the structure and can change some fields to indicate progress + * or mark state. + * - encoding: unused + * - decoding: Set by user. + * @param height the height of the slice + * @param y the y position of the slice + * @param type 1->top field, 2->bottom field, 3->frame + * @param offset offset into the AVFrame.data from which the slice should be read + *) + draw_horiz_band: procedure (s: PAVCodecContext; + src: {const} PAVFrame; offset: PQuadIntArray; + y: cint; type_: cint; height: cint); cdecl; + + (* audio only *) + sample_rate: cint; ///< samples per second + channels: cint; ///< number of audio channels + + (** + * audio sample format + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + sample_fmt: TSampleFormat; ///< sample format + + (* The following data should not be initialized. *) + (** + * Samples per packet, initialized when calling 'init'. + *) + frame_size: cint; + frame_number: cint; ///< audio or video frame number +{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} + real_pict_num: cint; ///< returns the real picture number of previous encoded frame +{$IFEND} + + (** + * Number of frames the decoded output will be delayed relative to + * the encoded input. + * - encoding: Set by libavcodec. + * - decoding: unused + *) + delay: cint; + + (* - encoding parameters *) + qcompress: cfloat; ///< amount of qscale change between easy & hard scenes (0.0-1.0) + qblur: cfloat; ///< amount of qscale smoothing over time (0.0-1.0) + + (** + * minimum quantizer + * - encoding: Set by user. + * - decoding: unused + *) + qmin: cint; + + (** + * maximum quantizer + * - encoding: Set by user. + * - decoding: unused + *) + qmax: cint; + + (** + * maximum quantizer difference between frames + * - encoding: Set by user. + * - decoding: unused + *) + max_qdiff: cint; + + (** + * maximum number of B-frames between non-B-frames + * Note: The output will be delayed by max_b_frames+1 relative to the input. + * - encoding: Set by user. + * - decoding: unused + *) + max_b_frames: cint; + + (** + * qscale factor between IP and B-frames + * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset). + * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). + * - encoding: Set by user. + * - decoding: unused + *) + b_quant_factor: cfloat; + + (** obsolete FIXME remove *) + rc_strategy: cint; + + b_frame_strategy: cint; + + (** + * hurry up amount + * - encoding: unused + * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header + * @deprecated Deprecated in favor of skip_idct and skip_frame. + *) + hurry_up: cint; + + codec: PAVCodec; + + priv_data: pointer; + + {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 + (* unused, FIXME remove*) + rtp_mode: cint; + {$IFEND} + + rtp_payload_size: cint; (* The size of the RTP payload: the coder will *) + (* do it's best to deliver a chunk with size *) + (* below rtp_payload_size, the chunk will start *) + (* with a start code on some codecs like H.263 *) + (* This doesn't take account of any particular *) + (* headers inside the transmited RTP payload *) + + + (* The RTP callback: This function is called *) + (* every time the encoder has a packet to send *) + (* Depends on the encoder if the data starts *) + (* with a Start Code (it should) H.263 does. *) + (* mb_nb contains the number of macroblocks *) + (* encoded in the RTP payload *) + rtp_callback: procedure (avctx: PAVCodecContext; data: pointer; + size: cint; mb_nb: cint); cdecl; + + (* statistics, used for 2-pass encoding *) + mv_bits: cint; + header_bits: cint; + i_tex_bits: cint; + p_tex_bits: cint; + i_count: cint; + p_count: cint; + skip_count: cint; + misc_bits: cint; + + (** + * number of bits used for the previously encoded frame + * - encoding: Set by libavcodec. + * - decoding: unused + *) + frame_bits: cint; + + (** + * Private data of the user, can be used to carry app specific stuff. + * - encoding: Set by user. + * - decoding: Set by user. + *) + opaque: pointer; + + codec_name: array [0..31] of AnsiChar; +{$IF LIBAVCODEC_VERSION < 52064000} // < 52.64.0 + codec_type: TCodecType; (* see CODEC_TYPE_xxx *) +{$ELSE} + codec_type: TAVMediaType; (* see AVMEDIA_TYPE_xxx *) +{$IFEND} + codec_id: TCodecID; (* see CODEC_ID_xxx *) + + (** + * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). + * This is used to work around some encoder bugs. + * A demuxer should set this to what is stored in the field used to identify the codec. + * If there are multiple such fields in a container then the demuxer should choose the one + * which maximizes the information about the used codec. + * If the codec tag field in a container is larger then 32 bits then the demuxer should + * remap the longer ID to 32 bits with a table or other structure. Alternatively a new + * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated + * first. + * - encoding: Set by user, if not then the default based on codec_id will be used. + * - decoding: Set by user, will be converted to uppercase by libavcodec during init. + *) + codec_tag: cuint; + + (** + * Work around bugs in encoders which sometimes cannot be detected automatically. + * - encoding: Set by user + * - decoding: Set by user + *) + workaround_bugs: cint; + + (** + * luma single coefficient elimination threshold + * - encoding: Set by user. + * - decoding: unused + *) + luma_elim_threshold: cint; + + (** + * chroma single coeff elimination threshold + * - encoding: Set by user. + * - decoding: unused + *) + chroma_elim_threshold: cint; + + (** + * strictly follow the standard (MPEG4, ...). + * - encoding: Set by user. + * - decoding: Set by user. + * Setting this to STRICT or higher means the encoder and decoder will + * generally do stupid things. While setting it to inofficial or lower + * will mean the encoder might use things that are not supported by all + * spec compliant decoders. Decoders make no difference between normal, + * inofficial and experimental, that is they always try to decode things + * when they can unless they are explicitly asked to behave stupid + * (=strictly conform to the specs) + *) + strict_std_compliance: cint; + + (** + * qscale offset between IP and B-frames + * - encoding: Set by user. + * - decoding: unused + *) + b_quant_offset: cfloat; + + (** + * Error recognization; higher values will detect more errors but may + * misdetect some more or less valid parts as errors. + * - encoding: unused + * - decoding: Set by user. + *) + error_recognition: cint; + + (** + * Called at the beginning of each frame to get a buffer for it. + * If pic.reference is set then the frame will be read later by libavcodec. + * avcodec_align_dimensions2() should be used to find the required width and + * height, as they normally need to be rounded up to the next multiple of 16. + * if CODEC_CAP_DR1 is not set then get_buffer() must call + * avcodec_default_get_buffer() instead of providing buffers allocated by + * some other means. + * - encoding: unused + * - decoding: Set by libavcodec., user can override. + *) + get_buffer: function (c: PAVCodecContext; pic: PAVFrame): cint; cdecl; + + (** + * Called to release buffers which were allocated with get_buffer. + * A released buffer can be reused in get_buffer(). + * pic.data[*] must be set to NULL. + * - encoding: unused + * - decoding: Set by libavcodec., user can override. + *) + release_buffer: procedure (c: PAVCodecContext; pic: PAVFrame); cdecl; + + (** + * Size of the frame reordering buffer in the decoder. + * For MPEG-2 it is 1 IPB or 0 low delay IP. + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. + *) + has_b_frames: cint; + + (** + * number of bytes per packet if constant and known or 0 + * Used by some WAV based audio codecs. + *) + block_align: cint; + + parse_only: cint; (* - decoding only: if true, only parsing is done + (function avcodec_parse_frame()). The frame + data is returned. Only MPEG codecs support this now. *) + + (** + * 0-> h263 quant 1-> mpeg quant + * - encoding: Set by user. + * - decoding: unused + *) + mpeg_quant: cint; + + (** + * pass1 encoding statistics output buffer + * - encoding: Set by libavcodec. + * - decoding: unused + *) + stats_out: PByteArray; + + (** + * pass2 encoding statistics input buffer + * Concatenated stuff from stats_out of pass1 should be placed here. + * - encoding: Allocated/set/freed by user. + * - decoding: unused + *) + stats_in: PByteArray; + + (** + * ratecontrol qmin qmax limiting method + * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax. + * - encoding: Set by user. + * - decoding: unused + *) + rc_qsquish: cfloat; + + rc_qmod_amp: cfloat; + rc_qmod_freq: cint; + + (** + * ratecontrol override, see RcOverride + * - encoding: Allocated/set/freed by user. + * - decoding: unused + *) + rc_override: PRcOverride; + rc_override_count: cint; + + (** + * rate control equation + * - encoding: Set by user + * - decoding: unused + *) + rc_eq: {const} PByteArray; + + (** + * maximum bitrate + * - encoding: Set by user. + * - decoding: unused + *) + rc_max_rate: cint; + + (** + * minimum bitrate + * - encoding: Set by user. + * - decoding: unused + *) + rc_min_rate: cint; + + (** + * decoder bitstream buffer size + * - encoding: Set by user. + * - decoding: unused + *) + rc_buffer_size: cint; + rc_buffer_aggressivity: cfloat; + + (** + * qscale factor between P and I-frames + * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset). + * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). + * - encoding: Set by user. + * - decoding: unused + *) + i_quant_factor: cfloat; + + (** + * qscale offset between P and I-frames + * - encoding: Set by user. + * - decoding: unused + *) + i_quant_offset: cfloat; + + (** + * initial complexity for pass1 ratecontrol + * - encoding: Set by user. + * - decoding: unused + *) + rc_initial_cplx: cfloat; + + (** + * DCT algorithm, see FF_DCT_* below + * - encoding: Set by user. + * - decoding: unused + *) + dct_algo: cint; + + (** + * luminance masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + *) + lumi_masking: cfloat; + + (** + * temporary complexity masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + *) + temporal_cplx_masking: cfloat; + + (** + * spatial complexity masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + *) + spatial_cplx_masking: cfloat; + + (** + * p block masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + *) + p_masking: cfloat; + + (** + * darkness masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + *) + dark_masking: cfloat; + + {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 + (* for binary compatibility *) + unused: cint; + {$IFEND} + + (** + * IDCT algorithm, see FF_IDCT_* below. + * - encoding: Set by user. + * - decoding: Set by user. + *) + idct_algo: cint; + + (** + * slice count + * - encoding: Set by libavcodec. + * - decoding: Set by user (or 0). + *) + slice_count: cint; + + (** + * slice offsets in the frame in bytes + * - encoding: Set/allocated by libavcodec. + * - decoding: Set/allocated by user (or NULL). + *) + slice_offset: PCint; + + (** + * error concealment flags + * - encoding: unused + * - decoding: Set by user. + *) + error_concealment: cint; + + (** + * dsp_mask could be add used to disable unwanted CPU features + * CPU features (i.e. MMX, SSE. ...) + * + * With the FORCE flag you may instead enable given CPU features. + * (Dangerous: Usable in case of misdetection, improper usage however will + * result into program crash.) + *) + dsp_mask: cuint; + + (** + * bits per sample/pixel from the demuxer (needed for huffyuv). + * - encoding: Set by libavcodec. + * - decoding: Set by user. + *) + bits_per_coded_sample: cint; + + (** + * prediction method (needed for huffyuv) + * - encoding: Set by user. + * - decoding: unused + *) + prediction_method: cint; + + (** + * sample aspect ratio (0 if unknown) + * That is the width of a pixel divided by the height of the pixel. + * Numerator and denominator must be relatively prime and smaller than 256 for some video standards. + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + sample_aspect_ratio: TAVRational; + + (** + * the picture in the bitstream + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. + *) + coded_frame: PAVFrame; + + (** + * debug + * - encoding: Set by user. + * - decoding: Set by user. + *) + debug: cint; + + (** + * debug + * - encoding: Set by user. + * - decoding: Set by user. + *) + debug_mv: cint; + + (** + * error + * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR. + * - decoding: unused + *) + error: array [0..3] of cuint64; + + (** + * minimum MB quantizer + * - encoding: unused + * - decoding: unused + *) + mb_qmin: cint; + + (** + * maximum MB quantizer + * - encoding: unused + * - decoding: unused + *) + mb_qmax: cint; + + (** + * motion estimation comparison function + * - encoding: Set by user. + * - decoding: unused + *) + me_cmp: cint; + + (** + * subpixel motion estimation comparison function + * - encoding: Set by user. + * - decoding: unused + *) + me_sub_cmp: cint; + (** + * macroblock comparison function (not supported yet) + * - encoding: Set by user. + * - decoding: unused + *) + mb_cmp: cint; + (** + * interlaced DCT comparison function + * - encoding: Set by user. + * - decoding: unused + *) + ildct_cmp: cint; + + (** + * ME diamond size & shape + * - encoding: Set by user. + * - decoding: unused + *) + dia_size: cint; + + (** + * amount of previous MV predictors (2a+1 x 2a+1 square) + * - encoding: Set by user. + * - decoding: unused + *) + last_predictor_count: cint; + + (** + * prepass for motion estimation + * - encoding: Set by user. + * - decoding: unused + *) + pre_me: cint; + + (** + * motion estimation prepass comparison function + * - encoding: Set by user. + * - decoding: unused + *) + me_pre_cmp: cint; + + (** + * ME prepass diamond size & shape + * - encoding: Set by user. + * - decoding: unused + *) + pre_dia_size: cint; + + (** + * subpel ME quality + * - encoding: Set by user. + * - decoding: unused + *) + me_subpel_quality: cint; + + (** + * callback to negotiate the pixelFormat + * @param fmt is the list of formats which are supported by the codec, + * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality. + * The first is always the native one. + * @return the chosen format + * - encoding: unused + * - decoding: Set by user, if not set the native format will be chosen. + *) + get_format: function (s: PAVCodecContext; fmt: {const} PAVPixelFormat): TAVPixelFormat; cdecl; + + (** + * DTG active format information (additional aspect ratio + * information only used in DVB MPEG-2 transport streams) + * 0 if not set. + * + * - encoding: unused + * - decoding: Set by decoder. + *) + dtg_active_format: cint; + + (** + * maximum motion estimation search range in subpel units + * If 0 then no limit. + * + * - encoding: Set by user. + * - decoding: unused + *) + me_range: cint; + + (** + * intra quantizer bias + * - encoding: Set by user. + * - decoding: unused + *) + intra_quant_bias: cint; + + (** + * inter quantizer bias + * - encoding: Set by user. + * - decoding: unused + *) + inter_quant_bias: cint; + + (** + * color table ID + * - encoding: unused + * - decoding: Which clrtable should be used for 8bit RGB images. + * Tables have to be stored somewhere. FIXME + *) + color_table_id: cint; + + (** + * internal_buffer count + * Don't touch, used by libavcodec default_get_buffer(). + *) + internal_buffer_count: cint; + + (** + * internal_buffers + * Don't touch, used by libavcodec default_get_buffer(). + *) + internal_buffer: pointer; + + (** + * Global quality for codecs which cannot change it per frame. + * This should be proportional to MPEG-1/2/4 qscale. + * - encoding: Set by user. + * - decoding: unused + *) + global_quality: cint; + + (** + * coder type + * - encoding: Set by user. + * - decoding: unused + *) + coder_type: cint; + + (** + * context model + * - encoding: Set by user. + * - decoding: unused + *) + context_model: cint; + + { + (** + * + * - encoding: unused + * - decoding: Set by user. + *) + realloc: function (s: PAVCodecContext; buf: Pbyte; buf_size: cint): Pbyte; cdecl; + } + + (** + * slice flags + * - encoding: unused + * - decoding: Set by user. + *) + slice_flags: cint; + + (** + * XVideo Motion Acceleration + * - encoding: forbidden + * - decoding: set by decoder + *) + xvmc_acceleration: cint; + + (** + * macroblock decision mode + * - encoding: Set by user. + * - decoding: unused + *) + mb_decision: cint; + + (** + * custom intra quantization matrix + * - encoding: Set by user, can be NULL. + * - decoding: Set by libavcodec. + *) + intra_matrix: PWord; + + (** + * custom inter quantization matrix + * - encoding: Set by user, can be NULL. + * - decoding: Set by libavcodec. + *) + inter_matrix: PWord; + + (** + * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). + * This is used to work around some encoder bugs. + * - encoding: unused + * - decoding: Set by user, will be converted to uppercase by libavcodec during init. + *) + stream_codec_tag: array [0..3] of AnsiChar; //cuint; + + (** + * scene change detection threshold + * 0 is default, larger means fewer detected scene changes. + * - encoding: Set by user. + * - decoding: unused + *) + scenechange_threshold: cint; + + (** + * minimum Lagrange multipler + * - encoding: Set by user. + * - decoding: unused + *) + lmin: cint; + + (** + * maximum Lagrange multipler + * - encoding: Set by user. + * - decoding: unused + *) + lmax: cint; + + (** + * palette control structure + * - encoding: ??? (no palette-enabled encoder yet) + * - decoding: Set by user. + *) + palctrl: PAVPaletteControl; + + (** + * noise reduction strength + * - encoding: Set by user. + * - decoding: unused + *) + noise_reduction: cint; + + (** + * Called at the beginning of a frame to get cr buffer for it. + * Buffer type (size, hints) must be the same. libavcodec won't check it. + * libavcodec will pass previous buffer in pic, function should return + * same buffer or new buffer with old frame "painted" into it. + * If pic.data[0] == NULL must behave like get_buffer(). + * if CODEC_CAP_DR1 is not set then reget_buffer() must call + * avcodec_default_reget_buffer() instead of providing buffers allocated by + * some other means. + * - encoding: unused + * - decoding: Set by libavcodec., user can override + *) + reget_buffer: function (c: PAVCodecContext; pic: PAVFrame): cint; cdecl; + + (** + * Number of bits which should be loaded into the rc buffer before decoding starts. + * - encoding: Set by user. + * - decoding: unused + *) + rc_initial_buffer_occupancy: cint; + + (** + * + * - encoding: Set by user. + * - decoding: unused + *) + inter_threshold: cint; + + (** + * CODEC_FLAG2_* + * - encoding: Set by user. + * - decoding: Set by user. + *) + flags2: cint; + + (** + * Simulates errors in the bitstream to test error concealment. + * - encoding: Set by user. + * - decoding: unused + *) + error_rate: cint; + + (** + * MP3 antialias algorithm, see FF_AA_* below. + * - encoding: unused + * - decoding: Set by user. + *) + antialias_algo: cint; + + (** + * quantizer noise shaping + * - encoding: Set by user. + * - decoding: unused + *) + quantizer_noise_shaping: cint; + + (** + * thread count + * is used to decide how many independent tasks should be passed to execute() + * - encoding: Set by user. + * - decoding: Set by user. + *) + thread_count: cint; + + (** + * The codec may call this to execute several independent things. + * It will return only after finishing all tasks. + * The user may replace this with some multithreaded implementation, + * the default implementation will execute the parts serially. + * @param count the number of things to execute + * - encoding: Set by libavcodec, user can override. + * - decoding: Set by libavcodec, user can override. + *) + {$IF LIBAVCODEC_VERSION < 52004000} // < 52.4.0 + execute: function (c: PAVCodecContext; func: TExecuteFunc; arg: PPointer; ret: PCint; count: cint): cint; cdecl; + {$ELSE} + execute: function (c: PAVCodecContext; func: TExecuteFunc; arg: Pointer; ret: PCint; count: cint; size: cint): cint; cdecl; + {$IFEND} + + (** + * thread opaque + * Can be used by execute() to store some per AVCodecContext stuff. + * - encoding: set by execute() + * - decoding: set by execute() + *) + thread_opaque: pointer; + + (** + * Motion estimation threshold below which no motion estimation is + * performed, but instead the user specified motion vectors are used. + * + * - encoding: Set by user. + * - decoding: unused + *) + me_threshold: cint; + + (** + * Macroblock threshold below which the user specified macroblock types will be used. + * - encoding: Set by user. + * - decoding: unused + *) + mb_threshold: cint; + + (** + * precision of the intra DC coefficient - 8 + * - encoding: Set by user. + * - decoding: unused + *) + intra_dc_precision: cint; + + (** + * noise vs. sse weight for the nsse comparsion function + * - encoding: Set by user. + * - decoding: unused + *) + nsse_weight: cint; + + (** + * Number of macroblock rows at the top which are skipped. + * - encoding: unused + * - decoding: Set by user. + *) + skip_top: cint; + + (** + * Number of macroblock rows at the bottom which are skipped. + * - encoding: unused + * - decoding: Set by user. + *) + skip_bottom: cint; + + (** + * profile + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + profile: cint; + + (** + * level + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + level: cint; + + (** + * low resolution decoding, 1-> 1/2 size, 2->1/4 size + * - encoding: unused + * - decoding: Set by user. + *) + lowres: cint; + + (** + * Bitstream width / height, may be different from width/height if lowres + * or other things are used. + * - encoding: unused + * - decoding: Set by user before init if known. Codec should override / dynamically change if needed. + *) + coded_width, coded_height: cint; + + (** + * frame skip threshold + * - encoding: Set by user. + * - decoding: unused + *) + frame_skip_threshold: cint; + + (** + * frame skip factor + * - encoding: Set by user. + * - decoding: unused + *) + frame_skip_factor: cint; + + (** + * frame skip exponent + * - encoding: Set by user. + * - decoding: unused + *) + frame_skip_exp: cint; + + (** + * frame skip comparison function + * - encoding: Set by user. + * - decoding: unused + *) + frame_skip_cmp: cint; + + (** + * Border processing masking, raises the quantizer for mbs on the borders + * of the picture. + * - encoding: Set by user. + * - decoding: unused + *) + border_masking: cfloat; + + (** + * minimum MB lagrange multipler + * - encoding: Set by user. + * - decoding: unused + *) + mb_lmin: cint; + + (** + * maximum MB lagrange multipler + * - encoding: Set by user. + * - decoding: unused + *) + mb_lmax: cint; + + (** + * + * - encoding: Set by user. + * - decoding: unused + *) + me_penalty_compensation: cint; + + (** + * + * - encoding: unused + * - decoding: Set by user. + *) + skip_loop_filter: TAVDiscard; + + (** + * + * - encoding: unused + * - decoding: Set by user. + *) + skip_idct: TAVDiscard; + + (** + * + * - encoding: unused + * - decoding: Set by user. + *) + skip_frame: TAVDiscard; + + (** + * + * - encoding: Set by user. + * - decoding: unused + *) + bidir_refine: cint; + + (** + * + * - encoding: Set by user. + * - decoding: unused + *) + brd_scale: cint; + + (** + * constant rate factor - quality-based VBR - values ~correspond to qps + * - encoding: Set by user. + * - decoding: unused + *) + {$IF LIBAVCODEC_VERSION >= 51021000} // 51.21.0 + crf: cfloat; + {$ELSE} + crf: cint; + {$IFEND} + + (** + * constant quantization parameter rate control method + * - encoding: Set by user. + * - decoding: unused + *) + cqp: cint; + + (** + * minimum GOP size + * - encoding: Set by user. + * - decoding: unused + *) + keyint_min: cint; + + (** + * number of reference frames + * - encoding: Set by user. + * - decoding: Set by lavc. + *) + refs: cint; + + (** + * chroma qp offset from luma + * - encoding: Set by user. + * - decoding: unused + *) + chromaoffset: cint; + + (** + * Influences how often B-frames are used. + * - encoding: Set by user. + * - decoding: unused + *) + bframebias: cint; + + (** + * trellis RD quantization + * - encoding: Set by user. + * - decoding: unused + *) + trellis: cint; + + (** + * Reduce fluctuations in qp (before curve compression). + * - encoding: Set by user. + * - decoding: unused + *) + complexityblur: cfloat; + + (** + * in-loop deblocking filter alphac0 parameter + * alpha is in the range -6...6 + * - encoding: Set by user. + * - decoding: unused + *) + deblockalpha: cint; + + (** + * in-loop deblocking filter beta parameter + * beta is in the range -6...6 + * - encoding: Set by user. + * - decoding: unused + *) + deblockbeta: cint; + + (** + * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4 + * - encoding: Set by user. + * - decoding: unused + *) + partitions: cint; + + (** + * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto) + * - encoding: Set by user. + * - decoding: unused + *) + directpred: cint; + + (** + * Audio cutoff bandwidth (0 means "automatic") + * - encoding: Set by user. + * - decoding: unused + *) + cutoff: cint; + + (** + * Multiplied by qscale for each frame and added to scene_change_score. + * - encoding: Set by user. + * - decoding: unused + *) + scenechange_factor: cint; + + (** + * + * Note: Value depends upon the compare function used for fullpel ME. + * - encoding: Set by user. + * - decoding: unused + *) + mv0_threshold: cint; + + (** + * Adjusts sensitivity of b_frame_strategy 1. + * - encoding: Set by user. + * - decoding: unused + *) + b_sensitivity: cint; + + (** + * - encoding: Set by user. + * - decoding: unused + *) + compression_level: cint; + + (** + * Sets whether to use LPC mode - used by FLAC encoder. + * - encoding: Set by user. + * - decoding: unused + *) + use_lpc: cint; + + (** + * LPC coefficient precision - used by FLAC encoder + * - encoding: Set by user. + * - decoding: unused + *) + lpc_coeff_precision: cint; + + (** + * - encoding: Set by user. + * - decoding: unused + *) + min_prediction_order: cint; + + (** + * - encoding: Set by user. + * - decoding: unused + *) + max_prediction_order: cint; + + (** + * search method for selecting prediction order + * - encoding: Set by user. + * - decoding: unused + *) + prediction_order_method: cint; + + (** + * - encoding: Set by user. + * - decoding: unused + *) + min_partition_order: cint; + + (** + * - encoding: Set by user. + * - decoding: unused + *) + max_partition_order: cint; + + {$IF LIBAVCODEC_VERSION >= 51026000} // 51.26.0 + (** + * GOP timecode frame start number, in non drop frame format + * - encoding: Set by user. + * - decoding: unused + *) + timecode_frame_start: cint64; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 51042000} // 51.42.0 + {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} + (** + * Decoder should decode to this many channels if it can (0 for default) + * - encoding: unused + * - decoding: Set by user. + * @deprecated Deprecated in favor of request_channel_layout. + *) + request_channels: cint; + {$IFEND} + {$IFEND} + + {$IF LIBAVCODEC_VERSION > 51049000} // > 51.49.0 + (** + * Percentage of dynamic range compression to be applied by the decoder. + * The default value is 1.0, corresponding to full compression. + * - encoding: unused + * - decoding: Set by user. + *) + drc_scale: cfloat; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 51068000} // 51.68.0 + (** + * opaque 64bit number (generally a PTS) that will be reordered and + * output in AVFrame.reordered_opaque + * - encoding: unused + * - decoding: Set by user. + *) + reordered_opaque: cint64; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 51069000} // 51.69.0 + (** + * Bits per sample/pixel of internal libavcodec pixel/sample format. + * This field is applicable only when sample_fmt is SAMPLE_FMT_S32. + * - encoding: set by user. + * - decoding: set by libavcodec. + *) + bits_per_raw_sample: cint; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 52002000} // 52.2.0 + (** + * Audio channel layout. + * - encoding: set by user. + * - decoding: set by libavcodec. + *) + channel_layout: cint64; + + (** + * Request decoder to use this channel layout if it can (0 for default) + * - encoding: unused + * - decoding: Set by user. + *) + request_channel_layout: cint64; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 52004000} // >= 52.4.0 + (** + * Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow. + * - encoding: Set by user. + * - decoding: unused. + *) + rc_max_available_vbv_use: cfloat; + + (** + * Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow. + * - encoding: Set by user. + * - decoding: unused. + *) + rc_min_vbv_overflow_use: cfloat; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 52018000} // >= 52.18.0 + (** + * Hardware accelerator in use + * - encoding: unused. + * - decoding: Set by libavcodec + *) + hwaccel: PAVHWAccel; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 52020000} // >= 52.20.0 + (** + * For some codecs, the time base is closer to the field rate than the frame rate. + * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration + * if no telecine is used ... + * + * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2. + *) + ticks_per_frame: cint; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 52021000} // >= 52.21.0 + (** + * Hardware accelerator context. + * For some hardware accelerators, a global context needs to be + * provided by the user. In that case, this holds display-dependent + * data FFmpeg cannot instantiate itself. Please refer to the + * FFmpeg HW accelerator documentation to know how to fill this + * is. e.g. for VA API, this is a struct vaapi_context. + * - encoding: unused + * - decoding: Set by user + *) + hwaccel_context: pointer; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 52028000} // >= 52.28.0 + (** + * Chromaticity coordinates of the source primaries. + * - encoding: Set by user + * - decoding: Set by libavcodec + *) + color_primaries: TAVColorPrimaries; + + (** + * Color Transfer Characteristic. + * - encoding: Set by user + * - decoding: Set by libavcodec + *) + color_trc: TAVColorTransferCharacteristic; + + (** + * YUV colorspace type. + * - encoding: Set by user + * - decoding: Set by libavcodec + *) + colorspace: TAVColorSpace; + + (** + * MPEG vs JPEG YUV range. + * - encoding: Set by user + * - decoding: Set by libavcodec + *) + color_range: TAVColorRange; + + (** + * This defines the location of chroma samples. + * - encoding: Set by user + * - decoding: Set by libavcodec + *) + chroma_sample_location: TAVChromaLocation; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 52037000} // >= 52.37.0 + (** + * The codec may call this to execute several independent things. + * It will return only after finishing all tasks. + * The user may replace this with some multithreaded implementation, + * the default implementation will execute the parts serially. + * Also see avcodec_thread_init and e.g. the --enable-pthread configure option. + * @param c context passed also to func + * @param count the number of things to execute + * @param arg2 argument passed unchanged to func + * @param ret return values of executed functions, must have space for "count" values. May be NULL. + * @param func function that will be called count times, with jobnr from 0 to count-1. + * threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no + * two instances of func executing at the same time will have the same threadnr. + * @return always 0 currently, but code should handle a future improvement where when any call to func + * returns < 0 no further calls to func may be done and < 0 is returned. + * - encoding: Set by libavcodec, user can override. + * - decoding: Set by libavcodec, user can override. + *) + execute2: function (c: PAVCodecContext; func: TExecute2Func; arg2: Pointer; ret: Pcint; count: cint): cint; cdecl; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 52042000} // >= 52.42.0 + (** + * explicit P-frame weighted prediction analysis method + * 0: off + * 1: fast blind weighting (one reference duplicate with -1 offset) + * 2: smart weighting (full fade detection analysis) + * - encoding: Set by user. + * - decoding: unused + *) + weighted_p_pred: cint; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 52061000} // >= 52.61.0 + (** + * AQ mode + * 0: Disabled + * 1: Variance AQ (complexity mask) + * 2: Auto-variance AQ (experimental) + * - encoding: Set by user + * - decoding: unused + *) + aq_mode: cint; + + (** + * AQ strength + * Reduces blocking and blurring in flat and textured areas. + * - encoding: Set by user + * - decoding: unused + *) + aq_strength: cfloat; + + (** + * PSY RD + * Strength of psychovisual optimization + * - encoding: Set by user + * - decoding: unused + *) + psy_rd: cfloat; + + (** + * PSY trellis + * Strength of psychovisual optimization + * - encoding: Set by user + * - decoding: unused + *) + psy_trellis: cfloat; + + (** + * RC lookahead + * Number of frames for frametype and ratecontrol lookahead + * - encoding: Set by user + * - decoding: unused + *) + rc_lookahead: cint; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 52067000} // >= 52.67.0 + (** + * Constant rate factor maximum + * With CRF encoding mode and VBV restrictions enabled, prevents quality from being worse + * than crf_max, even if doing so would violate VBV restrictions. + * - encoding: Set by user. + * - decoding: unused + *) + crf_max: cfloat; + {$IFEND} + end; + +(** + * AVCodec. + *) + TAVCodec = record + name: PAnsiChar; +{$IF LIBAVCODEC_VERSION < 52064000} // < 52.64.0 + type_: TCodecType; +{$ELSE} + type_: TAVMediaType; +{$IFEND} + id: TCodecID; + priv_data_size: cint; + init: function (avctx: PAVCodecContext): cint; cdecl; (* typo corretion by the Creative CAT *) + encode: function (avctx: PAVCodecContext; buf: PByteArray; buf_size: cint; data: pointer): cint; cdecl; + close: function (avctx: PAVCodecContext): cint; cdecl; + decode: function (avctx: PAVCodecContext; outdata: pointer; var outdata_size: cint; + {$IF LIBAVCODEC_VERSION < 52025000} // 52.25.0 + buf: {const} PByteArray; buf_size: cint): cint; cdecl; + {$ELSE} + avpkt: PAVPacket): cint; cdecl; + {$IFEND} + (** + * Codec capabilities. + * see CODEC_CAP_* + *) + capabilities: cint; + next: PAVCodec; + (** + * Flush buffers. + * Will be called when seeking + *) + flush: procedure (avctx: PAVCodecContext); cdecl; + supported_framerates: {const} PAVRational; ///< array of supported framerates, or NULL if any, array is terminated by {0,0} + pix_fmts: {const} PAVPixelFormat; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1 + {$IF LIBAVCODEC_VERSION >= 51055000} // 51.55.0 + (** + * Descriptive name for the codec, meant to be more human readable than name. + * You should use the NULL_IF_CONFIG_SMALL() macro to define it. + *) + long_name: {const} PAnsiChar; + {$IFEND} + {$IF LIBAVCODEC_VERSION >= 51056000} // 51.56.0 + supported_samplerates: {const} PCint; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0 + {$IFEND} + {$IF LIBAVCODEC_VERSION >= 51062000} // 51.62.0 + sample_fmts: {const} PSampleFormatArray; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1 + {$IFEND} + {$IF LIBAVCODEC_VERSION >= 52002000} // 52.2.0 + channel_layouts: {const} PCint64; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0 + {$IFEND} + end; + +{$IF LIBAVCODEC_VERSION >= 52018000} // 52.18.0 +(** + * AVHWAccel. + *) + TAVHWAccel = record + (** + * Name of the hardware accelerated codec. + * The name is globally unique among encoders and among decoders (but an + * encoder and a decoder can share the same name). + *) + name: PAnsiChar; + +{$IF LIBAVCODEC_VERSION < 52064000} // < 52.64.0 + (** + * Type of codec implemented by the hardware accelerator. + * + * See CODEC_TYPE_xxx + *) + type_: TCodecType; +{$ELSE} + (** + * Type of codec implemented by the hardware accelerator. + * + * See AVMediaType_xxx + *) + type_: TAVMediaType; +{$IFEND} + + + (** + * Codec implemented by the hardware accelerator. + * + * See CODEC_ID_xxx + *) + id: TCodecID; + + (** + * Supported pixel format. + * + * Only hardware accelerated formats are supported here. + *) + pix_fmt: {const} PAVPixelFormat; + + (** + * Hardware accelerated codec capabilities. + * see FF_HWACCEL_CODEC_CAP_* + *) + capabilities: cint; + + next: PAVCodec; + + (** + * Called at the beginning of each frame or field picture. + * + * Meaningful frame information (codec specific) is guaranteed to + * be parsed at this point. This function is mandatory. + * + * Note that buf can be NULL along with buf_size set to 0. + * Otherwise, this means the whole frame is available at this point. + * + * @param avctx the codec context + * @param buf the frame data buffer base + * @param buf_size the size of the frame in bytes + * @return zero if successful, a negative value otherwise + *) + start_frame: function (avctx: PAVCodecContext; + buf: PByteArray; + buf_size: cint): cint; cdecl; + + (** + * Callback for each slice. + * + * Meaningful slice information (codec specific) is guaranteed to + * be parsed at this point. This function is mandatory. + * + * @param avctx the codec context + * @param buf the slice data buffer base + * @param buf_size the size of the slice in bytes + * @return zero if successful, a negative value otherwise + *) + decode_slice: function (avctx: PAVCodecContext; + buf: PByteArray; + buf_size: cint): cint; cdecl; + + (** + * Called at the end of each frame or field picture. + * + * The whole picture is parsed at this point and can now be sent + * to the hardware accelerator. This function is mandatory. + * + * @param avctx the codec context + * @return zero if successful, a negative value otherwise + *) + end_frame: function (avctx: PAVCodecContext): cint; cdecl; + +{$IF LIBAVCODEC_VERSION >= 52021000} // >= 52.21.0 + (** + * Size of HW accelerator private data. + * + * Private data is allocated with av_mallocz() before + * AVCodecContext.get_buffer() and deallocated after + * AVCodecContext.release_buffer(). + *) + priv_data_size: cint; +{$IFEND} + + end; +{$IFEND} + +(** + * four components are given, that's all. + * the last component is alpha + *) + PAVPicture = ^TAVPicture; + TAVPicture = record + data: array [0..3] of PByteArray; + linesize: array [0..3] of cint; ///< number of bytes per line + end; + +type + TAVSubtitleType = ( + SUBTITLE_NONE, + + SUBTITLE_BITMAP, ///< A bitmap, pict will be set + + (** + * Plain text, the text field must be set by the decoder and is + * authoritative. ass and pict fields may contain approximations. + *) + SUBTITLE_TEXT, + + (** + * Formatted text, the ass field must be set by the decoder and is + * authoritative. pict and text fields may contain approximations. + *) + SUBTITLE_ASS + ); + +type + PPAVSubtitleRect = ^PAVSubtitleRect; + PAVSubtitleRect = ^TAVSubtitleRect; + {$IF LIBAVCODEC_VERSION < 52010000} // < 52.10.0 + TAVSubtitleRect = record + x: cuint16; + y: cuint16; + w: cuint16; + h: cuint16; + nb_colors: cuint16; + linesize: cint; + rgba_palette: PCuint32; + bitmap: PCuint8; + end; + {$ELSE} + TAVSubtitleRect = record + x: cint; ///< top left corner of pict, undefined when pict is not set + y: cint; ///< top left corner of pict, undefined when pict is not set + w: cint; ///< width of pict, undefined when pict is not set + h: cint; ///< height of pict, undefined when pict is not set + nb_colors: cint; ///< number of colors in pict, undefined when pict is not set + + (** + * data+linesize for the bitmap of this subtitle. + * can be set for text/ass as well once they where rendered + *) + pict: TAVPicture; + type_: TAVSubtitleType; + + text: PAnsiChar; ///< 0 terminated plain UTF-8 text + + (** + * 0 terminated ASS/SSA compatible event line. + * The pressentation of this is unaffected by the other values in this + * struct. + *) + ass: PByteArray; + end; + {$IFEND} + + PPAVSubtitle = ^PAVSubtitle; + PAVSubtitle = ^TAVSubtitle; + TAVSubtitle = record + format: cuint16; (* 0 = graphics *) + start_display_time: cuint32; (* relative to packet pts, in ms *) + end_display_time: cuint32; (* relative to packet pts, in ms *) + num_rects: cuint; + {$IF LIBAVCODEC_VERSION < 52010000} // < 52.10.0 + rects: PAVSubtitleRect; + {$ELSE} + rects: PPAVSubtitleRect; + {$IFEND} + {$IF LIBAVCODEC_VERSION >= 52032000} // >= 52.32.0 + pts: cint64; ///< Same as packet pts, in AV_TIME_BASE + {$IFEND} + end; + +{$IF LIBAVCODEC_VERSION >= 52025000} // 52.25.0 +{ packet functions } + +(** + * @deprecated use NULL instead + *) +procedure av_destruct_packet_nofree(pkt: PAVPacket); + cdecl; external av__codec; + +(* + * Default packet destructor. + *) +procedure av_destruct_packet(pkt: PAVPacket); + cdecl; external av__codec; + +(* + * Initialize optional fields of a packet with default values. + * + * @param pkt packet + *) +procedure av_init_packet(var pkt: TAVPacket); + cdecl; external av__codec; + +(* + * Allocate the payload of a packet and initialize its fields with + * default values. + * + * @param pkt packet + * @param size wanted payload size + * @return 0 if OK, AVERROR_xxx otherwise + *) +function av_new_packet(pkt: PAVPacket; size: cint): cint; + cdecl; external av__codec; + +(* + * Reduce packet size, correctly zeroing padding + * + * @param pkt packet + * @param size new size + *) +procedure av_shrink_packet(pkt: PAVPacket; size: cint); + cdecl; external av__codec; + +(* + * @warning This is a hack - the packet memory allocation stuff is broken. The + * packet is allocated if it was not really allocated. + *) +function av_dup_packet(pkt: PAVPacket): cint; + cdecl; external av__codec; + +(* + * Free a packet. + * + * @param pkt packet to free + *) +procedure av_free_packet(pkt: PAVPacket); +{$IF LIBAVCODEC_VERSION >= 52028000} // 52.28.0 + cdecl; external av__codec; +{$IFEND} +{$IFEND} + +(* resample.c *) +type + PReSampleContext = pointer; + PAVResampleContext = pointer; + PImgReSampleContext = pointer; + +function audio_resample_init (output_channels: cint; input_channels: cint; + output_rate: cint; input_rate: cint): PReSampleContext; + cdecl; external av__codec; + +function audio_resample (s: PReSampleContext; output: PSmallint; input: PSmallint; nb_samples: cint): cint; + cdecl; external av__codec; + +procedure audio_resample_close (s: PReSampleContext); + cdecl; external av__codec; + +(** + * Initializes an audio resampler. + * Note, if either rate is not an integer then simply scale both rates up so they are. + * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq + * @param log2_phase_count log2 of the number of entries in the polyphase filterbank + * @param linear If 1 then the used FIR filter will be linearly interpolated + between the 2 closest, if 0 the closest will be used + * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate + *) +function av_resample_init (out_rate: cint; in_rate: cint; filter_length: cint; + log2_phase_count: cint; linear: cint; cutoff: cdouble): PAVResampleContext; + cdecl; external av__codec; + +(** + * resamples. + * @param src an array of unconsumed samples + * @param consumed the number of samples of src which have been consumed are returned here + * @param src_size the number of unconsumed samples available + * @param dst_size the amount of space in samples available in dst + * @param update_ctx If this is 0 then the context will not be modified, that way several channels can be resampled with the same context. + * @return the number of samples written in dst or -1 if an error occurred + *) +function av_resample (c: PAVResampleContext; dst: PSmallint; src: PSmallint; var consumed: cint; + src_size: cint; dst_size: cint; update_ctx: cint): cint; + cdecl; external av__codec; + +(** + * Compensates samplerate/timestamp drift. The compensation is done by changing + * the resampler parameters, so no audible clicks or similar distortions occur + * @param compensation_distance distance in output samples over which the compensation should be performed + * @param sample_delta number of output samples which should be output less + * + * example: av_resample_compensate(c, 10, 500) + * here instead of 510 samples only 500 samples would be output + * + * note, due to rounding the actual compensation might be slightly different, + * especially if the compensation_distance is large and the in_rate used during init is small + *) +procedure av_resample_compensate (c: PAVResampleContext; sample_delta: cint; + compensation_distance: cint); + cdecl; external av__codec; + +procedure av_resample_close (c: PAVResampleContext); + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 +(* YUV420 format is assumed ! *) + +(** + * @deprecated Use the software scaler (swscale) instead. + *) +function img_resample_init (output_width: cint; output_height: cint; + input_width: cint; input_height: cint): PImgReSampleContext; + cdecl; external av__codec; deprecated; + +(** + * @deprecated Use the software scaler (swscale) instead. + *) +function img_resample_full_init (owidth: cint; oheight: cint; + iwidth: cint; iheight: cint; + topBand: cint; bottomBand: cint; + leftBand: cint; rightBand: cint; + padtop: cint; padbottom: cint; + padleft: cint; padright: cint): PImgReSampleContext; + cdecl; external av__codec; deprecated; + +(** + * @deprecated Use the software scaler (swscale) instead. + *) +procedure img_resample (s: PImgReSampleContext; output: PAVPicture; input: {const} PAVPicture); + cdecl; external av__codec; deprecated; + +(** + * @deprecated Use the software scaler (swscale) instead. + *) +procedure img_resample_close (s: PImgReSampleContext); + cdecl; external av__codec; deprecated; +{$IFEND} + +(** + * Allocate memory for a picture. Call avpicture_free to free it. + * + * @param picture the picture to be filled in. + * @param pix_fmt the format of the picture. + * @param width the width of the picture. + * @param height the height of the picture. + * @return Zero if successful, a negative value if not. + *) +function avpicture_alloc (picture: PAVPicture; pix_fmt: TAVPixelFormat; + width: cint; height: cint): cint; + cdecl; external av__codec; + +(** + * Free a picture previously allocated by avpicture_alloc(). + * + * @param picture the AVPicture to be freed + *) +procedure avpicture_free (picture: PAVPicture); + cdecl; external av__codec; + +(** + * Fill in the AVPicture fields. + * The fields of the given AVPicture are filled in by using the 'ptr' address + * which points to the image data buffer. Depending on the specified picture + * format, one or multiple image data pointers and line sizes will be set. + * If a planar format is specified, several pointers will be set pointing to + * the different picture planes and the line sizes of the different planes + * will be stored in the lines_sizes array. + * Call with ptr == NULL to get the required size for the ptr buffer. + * + * @param picture AVPicture whose fields are to be filled in + * @param ptr Buffer which will contain or contains the actual image data + * @param pix_fmt The format in which the picture data is stored. + * @param width the width of the image in pixels + * @param height the height of the image in pixels + * @return size of the image data in bytes + *) +function avpicture_fill (picture: PAVPicture; ptr: pointer; + pix_fmt: TAVPixelFormat; width: cint; height: cint): cint; + cdecl; external av__codec; + +function avpicture_layout (src: {const} PAVPicture; pix_fmt: TAVPixelFormat; + width: cint; height: cint; + dest: PByteArray; dest_size: cint): cint; + cdecl; external av__codec; + +(** + * Calculate the size in bytes that a picture of the given width and height + * would occupy if stored in the given picture format. + * Note that this returns the size of a compact representation as generated + * by avpicture_layout, which can be smaller than the size required for e.g. + * avpicture_fill. + * + * @param pix_fmt the given picture format + * @param width the width of the image + * @param height the height of the image + * @return Image data size in bytes or -1 on error (e.g. too large dimensions). + *) +function avpicture_get_size (pix_fmt: TAVPixelFormat; width: cint; height: cint): cint; + cdecl; external av__codec; + +procedure avcodec_get_chroma_sub_sample (pix_fmt: TAVPixelFormat; var h_shift: cint; var v_shift: cint); + cdecl; external av__codec; + +(** + * Returns the pixel format corresponding to the name \p name. + * + * If there is no pixel format with name \p name, then looks for a + * pixel format with the name corresponding to the native endian + * format of \p name. + * For example in a little-endian system, first looks for "gray16", + * then for "gray16le". + * + * Finally if no pixel format has been found, returns \c PIX_FMT_NONE. + *) +function avcodec_get_pix_fmt_name(pix_fmt: TAVPixelFormat): PAnsiChar; + cdecl; external av__codec; + +procedure avcodec_set_dimensions(s: PAVCodecContext; width: cint; height: cint); + cdecl; external av__codec; + +{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} +(** + * Returns the pixel format corresponding to the name name. + * + * If there is no pixel format with name name, then looks for a + * pixel format with the name corresponding to the native endian + * format of name. + * For example in a little-endian system, first looks for "gray16", + * then for "gray16le". + * + * Finally if no pixel format has been found, returns PIX_FMT_NONE.* + * @deprecated Deprecated in favor of av_get_pix_fmt(). + *) +function avcodec_get_pix_fmt(name: {const} PAnsiChar): TAVPixelFormat; + cdecl; external av__codec; +{$IF LIBAVCODEC_VERSION >= 52049000} // >= 52.49.0 + deprecated; +{$IFEND} +{$IFEND} + +(** + * Returns a value representing the fourCC code associated to the + * pixel format pix_fmt, or 0 if no associated fourCC code can be + * found. + *) +function avcodec_pix_fmt_to_codec_tag(pix_fmt: TAVPixelFormat): cuint; + cdecl; external av__codec; + +const + FF_LOSS_RESOLUTION = $0001; {**< loss due to resolution change *} + FF_LOSS_DEPTH = $0002; {**< loss due to color depth change *} + FF_LOSS_COLORSPACE = $0004; {**< loss due to color space conversion *} + FF_LOSS_ALPHA = $0008; {**< loss of alpha bits *} + FF_LOSS_COLORQUANT = $0010; {**< loss due to color quantization *} + FF_LOSS_CHROMA = $0020; {**< loss of chroma (e.g. RGB to gray conversion) *} + +(** + * Computes what kind of losses will occur when converting from one specific + * pixel format to another. + * When converting from one pixel format to another, information loss may occur. + * For example, when converting from RGB24 to GRAY, the color information will + * be lost. Similarly, other losses occur when converting from some formats to + * other formats. These losses can involve loss of chroma, but also loss of + * resolution, loss of color depth, loss due to the color space conversion, loss + * of the alpha bits or loss due to color quantization. + * avcodec_get_fix_fmt_loss() informs you about the various types of losses + * which will occur when converting from one pixel format to another. + * + * @param[in] dst_pix_fmt destination pixel format + * @param[in] src_pix_fmt source pixel format + * @param[in] has_alpha Whether the source pixel format alpha channel is used. + * @return Combination of flags informing you what kind of losses will occur. + *) +function avcodec_get_pix_fmt_loss (dst_pix_fmt: TAVPixelFormat; src_pix_fmt: TAVPixelFormat; + has_alpha: cint): cint; + cdecl; external av__codec; + +(** + * Finds the best pixel format to convert to given a certain source pixel + * format. When converting from one pixel format to another, information loss + * may occur. For example, when converting from RGB24 to GRAY, the color + * information will be lost. Similarly, other losses occur when converting from + * some formats to other formats. avcodec_find_best_pix_fmt() searches which of + * the given pixel formats should be used to suffer the least amount of loss. + * The pixel formats from which it chooses one, are determined by the + * pix_fmt_mask parameter. + * + * @code + * src_pix_fmt = PIX_FMT_YUV420P; + * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24); + * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss); + * @endcode + * + * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from + * @param[in] src_pix_fmt source pixel format + * @param[in] has_alpha Whether the source pixel format alpha channel is used. + * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur. + * @return The best pixel format to convert to or -1 if none was found. + *) +{$IF LIBAVCODEC_VERSION >= 52000000} // 52.0.0 +function avcodec_find_best_pix_fmt(pix_fmt_mask: cint64; src_pix_fmt: TAVPixelFormat; + has_alpha: cint; loss_ptr: PCint): cint; + cdecl; external av__codec; +{$ELSEIF LIBAVCODEC_VERSION < 52022001} +function avcodec_find_best_pix_fmt(pix_fmt_mask: cint; src_pix_fmt: TAVPixelFormat; + has_alpha: cint; loss_ptr: PCint): cint; + cdecl; external av__codec; +{$ELSE} +function avcodec_find_best_pix_fmt(pix_fmt_mask: cint; src_pix_fmt: TAVPixelFormat; + has_alpha: cint; loss_ptr: PCint): TAVPixelFormat; + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 51041000} // 51.41.0 +(** + * Print in buf the string corresponding to the pixel format with + * number pix_fmt, or an header if pix_fmt is negative. + * + * @param[in] buf the buffer where to write the string + * @param[in] buf_size the size of buf + * @param[in] pix_fmt the number of the pixel format to print the corresponding info string, or + * a negative value to print the corresponding header. + * Meaningful values for obtaining a pixel format info vary from 0 to PIX_FMT_NB -1. + *) +{$IF LIBAVCODEC_VERSION < 52022001} // 52.22.1 +procedure avcodec_pix_fmt_string (buf: PAnsiChar; buf_size: cint; pix_fmt: cint); + cdecl; external av__codec; +{$ELSE} +procedure avcodec_pix_fmt_string (buf: PAnsiChar; buf_size: cint; pix_fmt: TAVPixelFormat); + cdecl; external av__codec; +{$IFEND} +{$IFEND} + +const + FF_ALPHA_TRANSP = $0001; {* image has some totally transparent pixels *} + FF_ALPHA_SEMI_TRANSP = $0002; {* image has some transparent pixels *} + +(** + * Tell if an image really has transparent alpha values. + * @return ored mask of FF_ALPHA_xxx constants + *) +function img_get_alpha_info (src: {const} PAVPicture; + pix_fmt: TAVPixelFormat; + width: cint; + height: cint): cint; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 +(** + * convert among pixel formats + * @deprecated Use the software scaler (swscale) instead. + *) +function img_convert (dst: PAVPicture; dst_pix_fmt: TAVPixelFormat; + src: {const} PAVPicture; pix_fmt: TAVPixelFormat; + width: cint; height: cint): cint; + cdecl; external av__codec; deprecated; +{$IFEND} + +(* deinterlace a picture *) +(* deinterlace - if not supported return -1 *) +function avpicture_deinterlace (dst: PAVPicture; + src: {const} PAVPicture; + pix_fmt: TAVPixelFormat; + width: cint; + height: cint): cint; + cdecl; external av__codec; + +{* external high level API *} + +{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 +{ +var + first_avcodec: PAVCodec; external av__codec; +} +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0 +(** + * If c is NULL, returns the first registered codec, + * if c is non-NULL, returns the next registered codec after c, + * or NULL if c is the last one. + *) +function av_codec_next(c: PAVCodec): PAVCodec; + cdecl; external av__codec; +{$IFEND} + +(** + * Returns the LIBAVCODEC_VERSION_INT constant. + *) +function avcodec_version(): cuint; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION < 52008000} // 52.8.0 +(* returns LIBAVCODEC_BUILD constant *) +function avcodec_build(): cuint; + cdecl; external av__codec; deprecated; +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 52041000} // 52.41.0 +(** + * Returns the libavcodec build-time configuration. + *) +function avcodec_configuration(): PAnsiChar; + cdecl; external av__codec; + +(** + * Returns the libavcodec license. + *) +function avcodec_license(): PAnsiChar; + cdecl; external av__codec; +{$IFEND} + +(** + * Initializes libavcodec. + * + * @warning This function must be called before any other libavcodec + * function. + *) +procedure avcodec_init(); + cdecl; external av__codec; + +(** + * Register the codec codec and initialize libavcodec. + * + * @see avcodec_init() + *) +{$IF LIBAVCODEC_VERSION >= 52014000} // 52.14.0 +procedure avcodec_register(codec: PAVCodec); + cdecl; external av__codec; +// Deprecated in favor of avcodec_register. +procedure register_avcodec(codec: PAVCodec); + cdecl; external av__codec; deprecated; +{$ELSEIF LIBAVCODEC_VERSION_MAJOR < 53} +procedure register_avcodec(codec: PAVCodec); + cdecl; external av__codec; +{$IFEND} +(** + * Finds a registered encoder with a matching codec ID. + * + * @param id CodecID of the requested encoder + * @return An encoder if one was found, NULL otherwise. + *) +function avcodec_find_encoder(id: TCodecID): PAVCodec; + cdecl; external av__codec; + +(** + * Finds a registered encoder with the specified name. + * + * @param name name of the requested encoder + * @return An encoder if one was found, NULL otherwise. + *) +function avcodec_find_encoder_by_name(name: PAnsiChar): PAVCodec; + cdecl; external av__codec; + +(** + * Finds a registered decoder with a matching codec ID. + * + * @param id CodecID of the requested decoder + * @return A decoder if one was found, NULL otherwise. + *) +function avcodec_find_decoder(id: TCodecID): PAVCodec; + cdecl; external av__codec; + +(** + * Finds a registered decoder with the specified name. + * + * @param name name of the requested decoder + * @return A decoder if one was found, NULL otherwise. + *) +function avcodec_find_decoder_by_name(name: PAnsiChar): PAVCodec; + cdecl; external av__codec; +procedure avcodec_string(buf: PAnsiChar; buf_size: cint; enc: PAVCodecContext; encode: cint); + cdecl; external av__codec; + +(** + * Sets the fields of the given AVCodecContext to default values. + * + * @param s The AVCodecContext of which the fields should be set to default values. + *) +procedure avcodec_get_context_defaults(s: PAVCodecContext); + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0 +(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! + * we WILL change its arguments and name a few times! *) +{$IF LIBAVCODEC_VERSION < 52064000} // < 52.64.0 +procedure avcodec_get_context_defaults2(s: PAVCodecContext; ctype: TCodecType); + cdecl; external av__codec; +{$ELSE} +procedure avcodec_get_context_defaults2(s: PAVCodecContext; ctype: TAVMediaType); + cdecl; external av__codec; +{$IFEND} +{$IFEND} + +(** + * Allocates an AVCodecContext and sets its fields to default values. The + * resulting struct can be deallocated by simply calling av_free(). + * + * @return An AVCodecContext filled with default values or NULL on failure. + * @see avcodec_get_context_defaults + *) +function avcodec_alloc_context(): PAVCodecContext; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0 +(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! + * we WILL change its arguments and name a few times! *) +{$IF LIBAVCODEC_VERSION < 52064000} // < 52.64.0 +function avcodec_alloc_context2(ctype: TCodecType): PAVCodecContext; + cdecl; external av__codec; +{$ELSE} +function avcodec_alloc_context2(ctype: TAVMediaType): PAVCodecContext; + cdecl; external av__codec; +{$IFEND} +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 52065000} // >= 52.65.0 +(** + * Copy the settings of the source AVCodecContext into the destination + * AVCodecContext. The resulting destination codec context will be + * unopened, i.e. you are required to call avcodec_open() before you + * can use this AVCodecContext to decode/encode video/audio data. + * + * @param dest target codec context, should be initialized with + * avcodec_alloc_context(), but otherwise uninitialized + * @param src source codec context + * @return AVERROR() on error (e.g. memory allocation error), 0 on success + *) +function avcodec_copy_context(dest: PAVCodecContext; src: {const} PAVCodecContext): cint; + cdecl; external av__codec; +{$IFEND} + +(** + * Sets the fields of the given AVFrame to default values. + * + * @param pic The AVFrame of which the fields should be set to default values. + *) +procedure avcodec_get_frame_defaults (pic: PAVFrame); + cdecl; external av__codec; + +(** + * Allocates an AVFrame and sets its fields to default values. The resulting + * struct can be deallocated by simply calling av_free(). + * + * @return An AVFrame filled with default values or NULL on failure. + * @see avcodec_get_frame_defaults + *) +function avcodec_alloc_frame(): PAVFrame; + cdecl; external av__codec; + +function avcodec_default_get_buffer (s: PAVCodecContext; pic: PAVFrame): cint; + cdecl; external av__codec; +procedure avcodec_default_release_buffer (s: PAVCodecContext; pic: PAVFrame); + cdecl; external av__codec; +function avcodec_default_reget_buffer (s: PAVCodecContext; pic: PAVFrame): cint; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 52066000} // >= 52.66.0 +(** + * Returns the amount of padding in pixels which the get_buffer callback must + * provide around the edge of the image for codecs which do not have the + * CODEC_FLAG_EMU_EDGE flag. + * + * @return Required padding in pixels. + *) +function avcodec_get_edge_width(): cuint; + cdecl; external av__codec; +{$IFEND} + +(** + * Modifies width and height values so that they will result in a memory + * buffer that is acceptable for the codec if you do not use any horizontal + * padding. + *) +procedure avcodec_align_dimensions(s: PAVCodecContext; width: PCint; height: PCint); + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 52055000} // >= 52.55.0 +(** + * Modifies width and height values so that they will result in a memory + * buffer that is acceptable for the codec if you also ensure that all + * line sizes are a multiple of the respective linesize_align[i]. + *) +procedure avcodec_align_dimensions2(s: PAVCodecContext; width: PCint; height: PCint; + linesize_align: PQuadIntArray); + cdecl; external av__codec; +{$IFEND} + +(** + * Checks if the given dimension of a picture is valid, meaning that all + * bytes of the picture can be addressed with a signed int. + * + * @param[in] w Width of the picture. + * @param[in] h Height of the picture. + * @return Zero if valid, a negative value if invalid. + *) +function avcodec_check_dimensions(av_log_ctx: pointer; w: cuint; h: cuint): cint; + cdecl; external av__codec; +function avcodec_default_get_format(s: PAVCodecContext; fmt: {const} PAVPixelFormat): TAVPixelFormat; + cdecl; external av__codec; + +function avcodec_thread_init(s: PAVCodecContext; thread_count: cint): cint; + cdecl; external av__codec; +procedure avcodec_thread_free(s: PAVCodecContext); + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION < 52004000} // < 52.4.0 +function avcodec_thread_execute(s: PAVCodecContext; func: TExecuteFunc; arg: PPointer; var ret: cint; count: cint): cint; + cdecl; external av__codec; +{$ELSEIF LIBAVCODEC_VERSION < 52059000} // < 52.59.0 +function avcodec_thread_execute(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint; size: cint): cint; + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_VERSION < 52004000} // < 52.4.0 +function avcodec_default_execute(s: PAVCodecContext; func: TExecuteFunc; arg: PPointer; var ret: cint; count: cint): cint; + cdecl; external av__codec; +{$ELSE} +function avcodec_default_execute(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint; size: cint): cint; + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 52037000} // >= 52.37.0 +function avcodec_default_execute2(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint): cint; + cdecl; external av__codec; +{$IFEND} +//FIXME func typedef + +(** + * Initializes the AVCodecContext to use the given AVCodec. Prior to using this + * function the context has to be allocated. + * + * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(), + * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for + * retrieving a codec. + * + * @warning This function is not thread safe! + * + * @code + * avcodec_register_all(); + * codec = avcodec_find_decoder(CODEC_ID_H264); + * if (!codec) + * exit(1); + * + * context = avcodec_alloc_context(); + * + * if (avcodec_open(context, codec) < 0) + * exit(1); + * @endcode + * + * @param avctx The context which will be set up to use the given codec. + * @param codec The codec to use within the context. + * @return zero on success, a negative value on error + * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder + *) +function avcodec_open(avctx: PAVCodecContext; codec: PAVCodec): cint; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0 +(** + * @deprecated Use avcodec_decode_audio2 instead. + *) +function avcodec_decode_audio(avctx: PAVCodecContext; samples: PSmallint; + var frame_size_ptr: cint; + buf: {const} PByteArray; buf_size: cint): cint; + cdecl; external av__codec; {deprecated;} +{$IFEND} + +{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} +{$IF LIBAVCODEC_VERSION >= 51030000} // 51.30.0 +(** + * Decodes an audio frame from buf into samples. + * Wrapper function which calls avcodec_decode_audio3. + * + * @deprecated Use avcodec_decode_audio3 instead. + * @param avctx the codec context + * @param[out] samples the output buffer, sample type in avctx->sample_fmt + * @param[in,out] frame_size_ptr the output buffer size in bytes + * @param[in] buf the input buffer + * @param[in] buf_size the input buffer size in bytes + * @return On error a negative value is returned, otherwise the number of bytes + * used or zero if no frame could be decompressed. + *) +function avcodec_decode_audio2(avctx: PAVCodecContext; samples: PSmallint; + var frame_size_ptr: cint; + buf: {const} PByteArray; buf_size: cint): cint; + cdecl; external av__codec; {deprecated;} +{$IFEND} +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 52025000} // 52.25.0 +(** + * Decodes the audio frame of size avpkt->size from avpkt->data into samples. + * Some decoders may support multiple frames in a single AVPacket, such + * decoders would then just decode the first frame. In this case, + * avcodec_decode_audio3 has to be called again with an AVPacket that contains + * the remaining data in order to decode the second frame etc. + * If no frame + * could be outputted, frame_size_ptr is zero. Otherwise, it is the + * decompressed frame size in bytes. + * + * @warning You must set frame_size_ptr to the allocated size of the + * output buffer before calling avcodec_decode_audio3(). + * + * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than + * the actual read bytes because some optimized bitstream readers read 32 or 64 + * bits at once and could read over the end. + * + * @warning The end of the input buffer avpkt->data should be set to 0 to ensure that + * no overreading happens for damaged MPEG streams. + * + * @note You might have to align the input buffer avpkt->data and output buffer + * samples. The alignment requirements depend on the CPU: On some CPUs it isn't + * necessary at all, on others it won't work at all if not aligned and on others + * * it will work but it will have an impact on performance. + * + * In practice, avpkt->data should have 4 byte alignment at minimum and + * samples should be 16 byte aligned unless the CPU doesn't need it + * (AltiVec and SSE do). + * + * @note Some codecs have a delay between input and output, these need to be + * fed with avpkt->data=NULL, avpkt->size=0 at the end to return the remaining frames. + * + * @param avctx the codec context + * @param[out] samples the output buffer + * @param[in,out] frame_size_ptr the output buffer size in bytes + * @param[in] avpkt The input AVPacket containing the input buffer. + * You can create such packet with av_init_packet() and by then setting + * data and size, some decoders might in addition need other fields. + * All decoders are designed to use the least fields possible though. + * @return On error a negative value is returned, otherwise the number of bytes + * used or zero if no frame data was decompressed (used) from the input AVPacket. + *) +function avcodec_decode_audio3(avctx: PAVCodecContext; samples: PSmallint; + var frame_size_ptr: cint; + avpkt: PAVPacket): cint; + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} +(** + * Decodes a video frame from buf into picture. + * Wrapper function which calls avcodec_decode_video2. + * + * @deprecated Use avcodec_decode_video2 instead. + * @param avctx the codec context + * @param[out] picture The AVFrame in which the decoded video frame will be stored. + * Use avcodec_alloc_frame to get an AVFrame, the codec will + * allocate memory for the actual bitmap. + * @param[in] buf the input buffer + * @param[in] buf_size the size of the input buffer in bytes + * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero. + * @return On error a negative value is returned, otherwise the number of bytes + * used or zero if no frame could be decompressed. + *) +function avcodec_decode_video(avctx: PAVCodecContext; picture: PAVFrame; + var got_picture_ptr: cint; + buf: {const} PByteArray; buf_size: cint): cint; + cdecl; external av__codec; {deprecated;} +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 52025000} // 52.25.0 +(** + * Decodes the video frame of size avpkt->size from avpkt->data into picture. + * Some decoders may support multiple frames in a single AVPacket, such + * decoders would then just decode the first frame. + * + * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than + * the actual read bytes because some optimized bitstream readers read 32 or 64 + * bits at once and could read over the end. + * + * @warning The end of the input buffer buf should be set to 0 to ensure that + * no overreading happens for damaged MPEG streams. + * + * @note You might have to align the input buffer avpkt->data. + * The alignment requirements depend on the CPU: on some CPUs it isn't + * necessary at all, on others it won't work at all if not aligned and on others + * it will work but it will have an impact on performance. + * + * In practice, avpkt->data should have 4 byte alignment at minimum. + * + * @param avctx the codec context + * @param[out] picture The AVFrame in which the decoded video frame will be stored. + * @param[in] avpkt The input AVpacket containing the input buffer. + * You can create such packet with av_init_packet() and by then setting + * data and size, some decoders might in addition need other fields like + * flags&AV_PKT_FLAG_KEY. All decoders are designed to use the least + * fields possible. + * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero. + * @return On error a negative value is returned, otherwise the number of bytes + * used or zero if no frame could be decompressed. + *) +function avcodec_decode_video2(avctx: PAVCodecContext; picture: PAVFrame; + var got_picture_ptr: cint; + avpkt: PAVPacket): cint; + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} +(* Decode a subtitle message. Return -1 if error, otherwise return the + * number of bytes used. If no subtitle could be decompressed, + * got_sub_ptr is zero. Otherwise, the subtitle is stored in*sub. + *) +function avcodec_decode_subtitle(avctx: PAVCodecContext; sub: PAVSubtitle; + var got_sub_ptr: cint; + buf: {const} PByteArray; buf_size: cint): cint; + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 52025000} // 52.25.0 +(* Decodes a subtitle message. + * Returns a negative value on error, otherwise returns the number of bytes used. + * If no subtitle could be decompressed, got_sub_ptr is zero. + * Otherwise, the subtitle is stored in sub. + * + * @param avctx the codec context + * @param[out] sub The AVSubtitle in which the decoded subtitle will be stored. + * @param[in,out] got_sub_ptr Zero if no subtitle could be decompressed, otherwise, it is nonzero. + * @param[in] avpkt The input AVPacket containing the input buffer. + *) +function avcodec_decode_subtitle2(avctx: PAVCodecContext; sub: PAVSubtitle; + var got_sub_ptr: cint; + avpkt: PAVPacket): cint; + cdecl; external av__codec; +{$IFEND} + +function avcodec_parse_frame(avctx: PAVCodecContext; pdata: PPointer; + data_size_ptr: PCint; + buf: PByteArray; buf_size: cint): cint; + cdecl; external av__codec; + +(** + * Encodes an audio frame from samples into buf. + * + * @note The output buffer should be at least FF_MIN_BUFFER_SIZE bytes large. + * However, for PCM audio the user will know how much space is needed + * because it depends on the value passed in buf_size as described + * below. In that case a lower value can be used. + * + * @param avctx the codec context + * @param[out] buf the output buffer + * @param[in] buf_size the output buffer size + * @param[in] samples the input buffer containing the samples + * The number of samples read from this buffer is frame_size*channels, + * both of which are defined in avctx. + * For PCM audio the number of samples read from samples is equal to + * buf_size * input_sample_size / output_sample_size. + * @return On error a negative value is returned, on success zero or the number + * of bytes used to encode the data read from the input buffer. + *) +function avcodec_encode_audio(avctx: PAVCodecContext; buf: PByte; + buf_size: cint; samples: {const} PSmallint): cint; + cdecl; external av__codec; + +(** + * Encodes a video frame from pict into buf. + * The input picture should be + * stored using a specific format, namely avctx.pix_fmt. + * + * @param avctx the codec context + * @param[out] buf the output buffer for the bitstream of encoded frame + * @param[in] buf_size the size of the output buffer in bytes + * @param[in] pict the input picture to encode + * @return On error a negative value is returned, on success zero or the number + * of bytes used from the output buffer. + *) +function avcodec_encode_video(avctx: PAVCodecContext; buf: PByte; + buf_size: cint; pict: PAVFrame): cint; + cdecl; external av__codec; +function avcodec_encode_subtitle(avctx: PAVCodecContext; buf: PByteArray; + buf_size: cint; sub: {const} PAVSubtitle): cint; + cdecl; external av__codec; + +function avcodec_close(avctx: PAVCodecContext): cint; + cdecl; external av__codec; + +(** + * Register all the codecs, parsers and bitstream filters which were enabled at + * configuration time. If you do not call this function you can select exactly + * which formats you want to support, by using the individual registration + * functions. + * + * @see register_avcodec + * @see avcodec_register + * @see av_register_codec_parser + * @see av_register_bitstream_filter + *) +procedure avcodec_register_all(); + cdecl; external av__codec; + +(** + * Flush buffers, should be called when seeking or when switching to a different stream. + *) +procedure avcodec_flush_buffers(avctx: PAVCodecContext); + cdecl; external av__codec; + +procedure avcodec_default_free_buffers(s: PAVCodecContext); + cdecl; external av__codec; + +(* misc useful functions *) + +(** + * Returns a single letter to describe the given picture type pict_type. + * + * @param[in] pict_type the picture type + * @return A single character representing the picture type. + *) +function av_get_pict_type_char(pict_type: cint): AnsiChar; + cdecl; external av__codec; + +(** + * Returns codec bits per sample. + * + * @param[in] codec_id the codec + * @return Number of bits per sample or zero if unknown for the given codec. + *) +function av_get_bits_per_sample(codec_id: TCodecID): cint; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 51041000} // 51.41.0 +(** + * Returns sample format bits per sample. + * + * @param[in] sample_fmt the sample format + * @return Number of bits per sample or zero if unknown for the given sample format. + *) +function av_get_bits_per_sample_format(sample_fmt: TSampleFormat): cint; + cdecl; external av__codec; +{$IFEND} + +const + AV_PARSER_PTS_NB = 4; + PARSER_FLAG_COMPLETE_FRAMES = $0001; + +type + {* frame parsing *} + PAVCodecParserContext = ^TAVCodecParserContext; + PAVCodecParser = ^TAVCodecParser; + + TAVCodecParserContext = record + priv_data: pointer; + parser: PAVCodecParser; + frame_offset: cint64; (* offset of the current frame *) + cur_offset: cint64; (* current offset (incremented by each av_parser_parse()) *) + next_frame_offset: cint64; (* offset of the next frame *) + (* video info *) + pict_type: cint; (* XXX: put it back in AVCodecContext *) + (** + * This field is used for proper frame duration computation in lavf. + * It signals, how much longer the frame duration of the current frame + * is compared to normal frame duration. + * + * frame_duration = (1 + repeat_pict) * time_base + * + * It is used by codecs like H.264 to display telecined material. + *) + repeat_pict: cint; (* XXX: put it back in AVCodecContext *) + pts: cint64; (* pts of the current frame *) + dts: cint64; (* dts of the current frame *) + + (* private data *) + last_pts: cint64; + last_dts: cint64; + fetch_timestamp: cint; + + cur_frame_start_index: cint; + cur_frame_offset: array [0..AV_PARSER_PTS_NB - 1] of cint64; + cur_frame_pts: array [0..AV_PARSER_PTS_NB - 1] of cint64; + cur_frame_dts: array [0..AV_PARSER_PTS_NB - 1] of cint64; + + flags: cint; + + {$IF LIBAVCODEC_VERSION >= 51040003} // 51.40.3 + offset: cint64; ///< byte offset from starting packet start + {$IFEND} + {$IF LIBAVCODEC_VERSION >= 51057001} // 51.57.1 + cur_frame_end: array [0..AV_PARSER_PTS_NB - 1] of cint64; + {$IFEND} + {$IF LIBAVCODEC_VERSION >= 52016000} // 52.16.0 + (*! + * Set by parser to 1 for key frames and 0 for non-key frames. + * It is initialized to -1, so if the parser doesn't set this flag, + * old-style fallback using FF_I_TYPE picture type as key frames + * will be used. + *) + key_frame: cint; + {$IFEND} + {$IF LIBAVCODEC_VERSION >= 52018000} // 52.18.0 + (** + * Time difference in stream time base units from the pts of this + * packet to the point at which the output from the decoder has converged + * independent from the availability of previous frames. That is, the + * frames are virtually identical no matter if decoding started from + * the very first frame or from this keyframe. + * Is AV_NOPTS_VALUE if unknown. + * This field is not the display duration of the current frame. + * + * The purpose of this field is to allow seeking in streams that have no + * keyframes in the conventional sense. It corresponds to the + * recovery point SEI in H.264 and match_time_delta in NUT. It is also + * essential for some types of subtitle streams to ensure that all + * subtitles are correctly displayed after seeking. + *) + convergence_duration: cint64; + {$IFEND} + {$IF LIBAVCODEC_VERSION >= 52019000} // 52.19.0 + // Timestamp generation support: + (** + * Synchronization point for start of timestamp generation. + * + * Set to >0 for sync point, 0 for no sync point and <0 for undefined + * (default). + * + * For example, this corresponds to presence of H.264 buffering period + * SEI message. + *) + dts_sync_point: cint; + + (** + * Offset of the current timestamp against last timestamp sync point in + * units of AVCodecContext.time_base. + * + * Set to INT_MIN when dts_sync_point unused. Otherwise, it must + * contain a valid timestamp offset. + * + * Note that the timestamp of sync point has usually a nonzero + * dts_ref_dts_delta, which refers to the previous sync point. Offset of + * the next frame after timestamp sync point will be usually 1. + * + * For example, this corresponds to H.264 cpb_removal_delay. + *) + dts_ref_dts_delta: cint; + + (** + * Presentation delay of current frame in units of AVCodecContext.time_base. + * + * Set to INT_MIN when dts_sync_point unused. Otherwise, it must + * contain valid non-negative timestamp delta (presentation time of a frame + * must not lie in the past). + * + * This delay represents the difference between decoding and presentation + * time of the frame. + * + * For example, this corresponds to H.264 dpb_output_delay. + *) + pts_dts_delta: cint; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 52021000} // 52.21.0 + (** + * Position of the packet in file. + * + * Analogous to cur_frame_pts/dts + *) + cur_frame_pos: array [0..AV_PARSER_PTS_NB - 1] of cint64; + + (** + * Byte position of currently parsed frame in stream. + *) + pos: cint64; + + (** + * Previous frame byte position. + *) + last_pos: cint64; + {$IFEND} + end; + + TAVCodecParser = record + codec_ids: array [0..4] of cint; (* several codec IDs are permitted *) + priv_data_size: cint; + parser_init: function(s: PAVCodecParserContext): cint; cdecl; + parser_parse: function(s: PAVCodecParserContext; + avctx: PAVCodecContext; + poutbuf: {const} PPointer; poutbuf_size: PCint; + buf: {const} PByteArray; buf_size: cint): cint; cdecl; + parser_close: procedure(s: PAVCodecParserContext); cdecl; + split: function(avctx: PAVCodecContext; buf: {const} PByteArray; + buf_size: cint): cint; cdecl; + next: PAVCodecParser; + end; + + +{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 +{ +var + av_first_parser: PAVCodecParser; external av__codec; +} +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0 +function av_parser_next(c: PAVCodecParser): PAVCodecParser; + cdecl; external av__codec; +{$IFEND} + +procedure av_register_codec_parser(parser: PAVCodecParser); + cdecl; external av__codec; + +function av_parser_init(codec_id: cint): PAVCodecParserContext; + cdecl; external av__codec; + +{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} +function av_parser_parse(s: PAVCodecParserContext; + avctx: PAVCodecContext; + poutbuf: PPointer; + poutbuf_size: PCint; + buf: {const} PByteArray; + buf_size: cint; + pts: cint64; + dts: cint64): cint; + cdecl; external av__codec; deprecated; +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 52021000} // 52.21.0 +(** + * Parse a packet. + * + * @param s parser context. + * @param avctx codec context. + * @param poutbuf set to pointer to parsed buffer or NULL if not yet finished. + * @param poutbuf_size set to size of parsed buffer or zero if not yet finished. + * @param buf input buffer. + * @param buf_size input length, to signal EOF, this should be 0 (so that the last frame can be output). + * @param pts input presentation timestamp. + * @param dts input decoding timestamp. + * @param pos input byte position in stream. + * @return the number of bytes of the input bitstream used. + * + * Example: + * @code + * while (in_len) do + * begin + * len := av_parser_parse2(myparser, AVCodecContext, data, size, + * in_data, in_len, + * pts, dts, pos); + * in_data := in_data + len; + * in_len := in_len - len; + * + * if (size) then + * decode_frame(data, size); + * end; + * @endcode + *) +function av_parser_parse2(s: PAVCodecParserContext; + avctx: PAVCodecContext; + poutbuf: PPointer; + poutbuf_size: PCint; + buf: {const} PByteArray; + buf_size: cint; + pts: cint64; + dts: cint64; + pos: cint64): cint; + cdecl; external av__codec; +{$IFEND} + +function av_parser_change(s: PAVCodecParserContext; + avctx: PAVCodecContext; + poutbuf: PPointer; poutbuf_size: PCint; + buf: {const} PByteArray; buf_size: cint; keyframe: cint): cint; + cdecl; external av__codec; +procedure av_parser_close(s: PAVCodecParserContext); + cdecl; external av__codec; + +type + PAVBitStreamFilterContext = ^TAVBitStreamFilterContext; + PAVBitStreamFilter = ^TAVBitStreamFilter; + + TAVBitStreamFilterContext = record + priv_data: pointer; + filter: PAVBitStreamFilter; + parser: PAVCodecParserContext; + next: PAVBitStreamFilterContext; + end; + + TAVBitStreamFilter = record + name: PAnsiChar; + priv_data_size: cint; + filter: function(bsfc: PAVBitStreamFilterContext; + avctx: PAVCodecContext; args: PByteArray; + poutbuf: PPointer; poutbuf_size: PCint; + buf: PByte; buf_size: cint; keyframe: cint): cint; cdecl; + {$IF LIBAVCODEC_VERSION >= 51043000} // 51.43.0 + close: procedure(bsfc: PAVBitStreamFilterContext); + {$IFEND} + next: PAVBitStreamFilter; + end; + +procedure av_register_bitstream_filter(bsf: PAVBitStreamFilter); + cdecl; external av__codec; + +function av_bitstream_filter_init(name: PAnsiChar): PAVBitStreamFilterContext; + cdecl; external av__codec; + +function av_bitstream_filter_filter(bsfc: PAVBitStreamFilterContext; + avctx: PAVCodecContext; args: PByteArray; + poutbuf: PPointer; poutbuf_size: PCint; + buf: PByte; buf_size: cint; keyframe: cint): cint; + cdecl; external av__codec; + +procedure av_bitstream_filter_close(bsf: PAVBitStreamFilterContext); + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0 +function av_bitstream_filter_next(f: PAVBitStreamFilter): PAVBitStreamFilter; + cdecl; external av__codec; +{$IFEND} + +(* memory *) + +(** + * Reallocates the given block if it is not large enough, otherwise it + * does nothing. + * + * @see av_realloc + *) +procedure av_fast_realloc(ptr: pointer; size: PCuint; min_size: cuint); + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 52025000} // >= 52.25.0 +(** + * Allocates a buffer, reusing the given one if large enough. + * + * Contrary to av_fast_realloc the current buffer contents might not be + * preserved and on error the old buffer is freed, thus no special + * handling to avoid memleaks is necessary. + * + * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer + * @param size size of the buffer *ptr points to + * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and + * *size 0 if an error occurred. + *) +procedure av_fast_malloc(ptr: pointer; size: PCuint; min_size: cuint); + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_VERSION < 51057000} // 51.57.0 +(* for static data only *) + +(** + * Frees all static arrays and resets their pointers to 0. + * Call this function to release all statically allocated tables. + * + * @deprecated. Code which uses av_free_static is broken/misdesigned + * and should correctly use static arrays + * + *) +procedure av_free_static(); + cdecl; external av__codec; deprecated; + +(** + * Allocation of static arrays. + * + * @warning Do not use for normal allocation. + * + * @param[in] size The amount of memory you need in bytes. + * @return block of memory of the requested size + * @deprecated. Code which uses av_mallocz_static is broken/misdesigned + * and should correctly use static arrays + *) +procedure av_mallocz_static(size: cuint); + cdecl; external av__codec; deprecated; {av_malloc_attrib av_alloc_size(1)} +{$IFEND} + +{$IF LIBAVCODEC_VERSION < 51035000} // 51.35.0 +procedure av_realloc_static(ptr: pointer; size: cuint); + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0 +(** + * Copy image 'src' to 'dst'. + *) +procedure av_picture_copy(dst: PAVPicture; + src: {const} PAVPicture; +{$IF LIBAVCODEC_VERSION < 52022001} // 52.22.1 + pix_fmt: cint; +{$ELSE} + pix_fmt: TAVPixelFormat; +{$IFEND} + width: cint; + height: cint); + cdecl; external av__codec; + +(** + * Crop image top and left side. + *) +function av_picture_crop(dst: PAVPicture; + src: {const} PAVPicture; +{$IF LIBAVCODEC_VERSION < 52022001} // 52.22.1 + pix_fmt: cint; +{$ELSE} + pix_fmt: TAVPixelFormat; +{$IFEND} + top_band: cint; + left_band: cint): cint; + cdecl; external av__codec; + +(** + * Pad image. + *) +function av_picture_pad(dst: PAVPicture; + src: {const} PAVPicture; + height: cint; + width: cint; +{$IF LIBAVCODEC_VERSION < 52022001} // 52.22.1 + pix_fmt: cint; +{$ELSE} + pix_fmt: TAVPixelFormat; +{$IFEND} + padtop: cint; + padbottom: cint; + padleft: cint; + padright: + cint; + color: PCint): cint; + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 +(** + * @deprecated Use the software scaler (swscale) instead. + *) +procedure img_copy(dst: PAVPicture; src: {const} PAVPicture; + pix_fmt: TAVPixelFormat; width: cint; height: cint); + cdecl; external av__codec; deprecated; + +(** + * @deprecated Use the software scaler (swscale) instead. + *) +function img_crop(dst: PAVPicture; src: {const} PAVPicture; + pix_fmt: TAVPixelFormat; top_band, left_band: cint): cint; + cdecl; external av__codec; deprecated; + +(** + * @deprecated Use the software scaler (swscale) instead. + *) +function img_pad(dst: PAVPicture; src: {const} PAVPicture; height, width: cint; + pix_fmt: TAVPixelFormat; padtop, padbottom, padleft, padright: cint; + color: PCint): cint; + cdecl; external av__codec; deprecated; +{$IFEND} + +(** + * Encodes extradata length to a buffer. Used by xiph codecs. + * + * @param s buffer to write to; must be at least (v/255+1) bytes long + * @param v size of extradata in bytes + * @return number of bytes written to the buffer. + *) +function av_xiphlacing(s: PByte; v: cuint): cuint; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 51041000} // 51.41.0 +(** + * Parses str and put in width_ptr and height_ptr the detected values. + * + * @return 0 in case of a successful parsing, a negative value otherwise + * @param[in] str the string to parse: it has to be a string in the format + * <width>x<height> or a valid video frame size abbreviation. + * @param[in,out] width_ptr pointer to the variable which will contain the detected + * frame width value + * @param[in,out] height_ptr pointer to the variable which will contain the detected + * frame height value + *) +function av_parse_video_frame_size(width_ptr: PCint; height_ptr: PCint; str: {const} PAnsiChar): cint; + cdecl; external av__codec; + +(** + * Parses str and put in frame_rate the detected values. + * + * @return 0 in case of a successful parsing, a negative value otherwise + * @param[in] str the string to parse: it has to be a string in the format + * <frame_rate_num>/<frame_rate_den>, a float number or a valid video rate abbreviation + * @param[in,out] frame_rate pointer to the AVRational which will contain the detected + * frame rate + *) +function av_parse_video_frame_rate(frame_rate: PAVRational; str: {const} PAnsiChar): cint; + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_VERSION < 52059000} // <52.59.0 + +{ + The following error codes are moved to libavutil/error.h on + revision 22501 Mar 13 2010 +} + +{* error handling *} + +const +{$IFDEF UNIX} + ENOENT = ESysENOENT; + EIO = ESysEIO; + ENOMEM = ESysENOMEM; + EINVAL = ESysEINVAL; + EDOM = ESysEDOM; + ENOSYS = ESysENOSYS; + EILSEQ = ESysEILSEQ; + EPIPE = ESysEPIPE; +{$ELSE} + ENOENT = 2; + EIO = 5; + ENOMEM = 12; + EINVAL = 22; + EPIPE = 32; // just an assumption. needs to be checked. + EDOM = 33; + {$IFDEF MSWINDOWS} + // Note: we assume that ffmpeg was compiled with MinGW. + // This must be changed if DLLs were compiled with cygwin. + ENOSYS = 40; // MSVC/MINGW: 40, CYGWIN: 88, LINUX/FPC: 38 + EILSEQ = 42; // MSVC/MINGW: 42, CYGWIN: 138, LINUX/FPC: 84 + {$ENDIF} +{$ENDIF} + +(** + * We need the sign of the error, because some platforms have + * E* and errno already negated. The previous version failed + * with Delphi, because it needed EINVAL defined. + * Warning: This code is platform dependent and assumes constants + * to be 32 bit. + * This version does the following steps: + * 1) shr 30: shifts the sign bit to bit position 2 + * 2) and $00000002: sets all other bits to zero + * positive EINVAL gives 0, negative gives 2 + * 3) - 1: positive EINVAL gives -1, negative 1 + *) +const + AVERROR_SIGN = (EINVAL shr 30) and $00000002 - 1; + +(* +#if EINVAL > 0 +#define AVERROR(e) (-(e)) {**< Returns a negative error code from a POSIX error code, to return from library functions. *} +#define AVUNERROR(e) (-(e)) {**< Returns a POSIX error code from a library function error return value. *} +#else +{* Some platforms have E* and errno already negated. *} +#define AVERROR(e) (e) +#define AVUNERROR(e) (e) +#endif +*) + +const + AVERROR_UNKNOWN = AVERROR_SIGN * EINVAL; (**< unknown error *) + AVERROR_IO = AVERROR_SIGN * EIO; (**< I/O error *) + AVERROR_NUMEXPECTED = AVERROR_SIGN * EDOM; (**< Number syntax expected in filename. *) + AVERROR_INVALIDDATA = AVERROR_SIGN * EINVAL; (**< invalid data found *) + AVERROR_NOMEM = AVERROR_SIGN * ENOMEM; (**< not enough memory *) + AVERROR_NOFMT = AVERROR_SIGN * EILSEQ; (**< unknown format *) + AVERROR_NOTSUPP = AVERROR_SIGN * ENOSYS; (**< Operation not supported. *) + AVERROR_NOENT = AVERROR_SIGN * ENOENT; (**< No such file or directory. *) +{$IF LIBAVCODEC_VERSION >= 52017000} // 52.17.0 + AVERROR_EOF = AVERROR_SIGN * EPIPE; (**< End of file. *) +{$IFEND} + // Note: function calls as constant-initializers are invalid + //AVERROR_PATCHWELCOME = -MKTAG('P','A','W','E'); {**< Not yet implemented in FFmpeg. Patches welcome. *} + AVERROR_PATCHWELCOME = -(ord('P') or (ord('A') shl 8) or (ord('W') shl 16) or (ord('E') shl 24)); +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 52032000} // >= 52.32.0 +(** + * Logs a generic warning message about a missing feature. This function is + * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.) + * only, and would normally not be used by applications. + * @param[in] avc a pointer to an arbitrary struct of which the first field is + * a pointer to an AVClass struct + * @param[in] feature string containing the name of the missing feature + * @param[in] want_sample indicates if samples are wanted which exhibit this feature. + * If want_sample is non-zero, additional verbage will be added to the log + * message which tells the user how to report samples to the development + * mailing list. + *) +procedure av_log_missing_feature(avc: Pointer; feature: {const} Pchar; want_sample: cint); + cdecl; external av__codec; + +(** + * Logs a generic warning message asking for a sample. This function is + * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.) + * only, and would normally not be used by applications. + * @param[in] avc a pointer to an arbitrary struct of which the first field is + * a pointer to an AVClass struct + * @param[in] msg string containing an optional message, or NULL if no message + *) +procedure av_log_ask_for_sample(avc: Pointer; msg: {const} Pchar); + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 52018000} // 52.18.0 +(** + * Registers the hardware accelerator hwaccel. + *) +procedure av_register_hwaccel (hwaccel: PAVHWAccel) + cdecl; external av__codec; + +(** + * If hwaccel is NULL, returns the first registered hardware accelerator, + * if hwaccel is non-NULL, returns the next registered hardware accelerator + * after hwaccel, or NULL if hwaccel is the last one. + *) +function av_hwaccel_next (hwaccel: PAVHWAccel): PAVHWAccel; + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 52030000} // 52.30.0 +(** + * Lock operation used by lockmgr + *) +type + TAVLockOp = ( + AV_LOCK_CREATE, ///< Create a mutex + AV_LOCK_OBTAIN, ///< Lock the mutex + AV_LOCK_RELEASE, ///< Unlock the mutex + AV_LOCK_DESTROY ///< Free mutex resources + ); + +(** + * Register a user provided lock manager supporting the operations + * specified by AVLockOp. mutex points to a (void) where the + * lockmgr should store/get a pointer to a user allocated mutex. It's + * NULL upon AV_LOCK_CREATE and != NULL for all other ops. + * + * @param cb User defined callback. Note: FFmpeg may invoke calls to this + * callback during the call to av_lockmgr_register(). + * Thus, the application must be prepared to handle that. + * If cb is set to NULL the lockmgr will be unregistered. + * Also note that during unregistration the previously registered + * lockmgr callback may also be invoked. + *) +// ToDo: Implement and test this +//function av_lockmgr_register(cb: function (mutex: pointer; op: TAVLockOp)): cint; +// cdecl; external av__codec; +{$IFEND} + +implementation + +{$IF (LIBAVCODEC_VERSION >= 52025000) and (LIBAVCODEC_VERSION <= 52027000)} // 52.25.0 - 52.27.0 +procedure av_free_packet(pkt: PAVPacket);{$IFDEF HASINLINE} inline; {$ENDIF} +begin + if assigned(pkt) then + begin + if assigned(pkt^.destruct) then + pkt^.destruct(pkt); + pkt^.data := NIL; + pkt^.size := 0; + end; +end; +{$IFEND} + +end. diff --git a/VideoPreview/src/lib/ffmpeg/avformat.pas b/VideoPreview/src/lib/ffmpeg/avformat.pas new file mode 100644 index 00000000..b745f962 --- /dev/null +++ b/VideoPreview/src/lib/ffmpeg/avformat.pas @@ -0,0 +1,1904 @@ +(* + * copyright (c) 2001 Fabrice Bellard + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + *) + +(* + * This is a part of Pascal porting of ffmpeg. + * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows. + * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT + * in the source codes. + * - Changes and updates by the UltraStar Deluxe Team + *) + +(* + * Conversion of libavformat/avformat.h + * Min. version: 50.5.0 , revision 6577, Sat Oct 7 15:30:46 2006 UTC + * Max. version: 52.63.0, revision 23179, Wed May 19 19:17:00 2010 CET + *) + +unit avformat; + +{$IFDEF FPC} + {$MODE DELPHI } + {$PACKENUM 4} (* use 4-byte enums *) + {$PACKRECORDS C} (* C/C++-compatible record packing *) +{$ELSE} + {$MINENUMSIZE 4} (* use 4-byte enums *) +{$ENDIF} + +{$I switches.inc} (* for the HasInline define *) + +{$IFDEF DARWIN} + {$linklib libavformat} +{$ENDIF} + +interface + +uses + ctypes, + avcodec, + avutil, + avio, + rational, + SysUtils, + UConfig; + +const + (* + * IMPORTANT: The official FFmpeg C headers change very quickly. Often some + * of the data structures are changed so that they become incompatible with + * older header files. The Pascal headers have to be adjusted to those changes, + * otherwise the application might crash randomly or strange bugs (not + * necessarily related to video or audio due to buffer overflows etc.) might + * occur. + * + * In the past users reported problems with USDX that took hours to fix and + * the problem was an unsupported version of FFmpeg. So we decided to disable + * support for future versions of FFmpeg until the headers are revised by us + * for that version as they otherwise most probably will break USDX. + * + * If the headers do not yet support your FFmpeg version you may want to + * adjust the max. version numbers manually but please note: it may work but + * in many cases it does not. The USDX team does NOT PROVIDE ANY SUPPORT + * for the game if the MAX. VERSION WAS CHANGED. + * + * The only safe way to support new versions of FFmpeg is to add the changes + * of the FFmpeg git repository C headers to the Pascal headers. + * You can accelerate this process by posting a patch with the git changes + * translated to Pascal to our bug tracker (please join our IRC chat before + * you start working on it). Simply adjusting the max. versions is NOT a valid + * fix. + *) + (* Max. supported version by this header *) + LIBAVFORMAT_MAX_VERSION_MAJOR = 52; + LIBAVFORMAT_MAX_VERSION_MINOR = 63; + LIBAVFORMAT_MAX_VERSION_RELEASE = 0; + LIBAVFORMAT_MAX_VERSION = (LIBAVFORMAT_MAX_VERSION_MAJOR * VERSION_MAJOR) + + (LIBAVFORMAT_MAX_VERSION_MINOR * VERSION_MINOR) + + (LIBAVFORMAT_MAX_VERSION_RELEASE * VERSION_RELEASE); + + (* Min. supported version by this header *) + LIBAVFORMAT_MIN_VERSION_MAJOR = 50; + LIBAVFORMAT_MIN_VERSION_MINOR = 5; + LIBAVFORMAT_MIN_VERSION_RELEASE = 0; + LIBAVFORMAT_MIN_VERSION = (LIBAVFORMAT_MIN_VERSION_MAJOR * VERSION_MAJOR) + + (LIBAVFORMAT_MIN_VERSION_MINOR * VERSION_MINOR) + + (LIBAVFORMAT_MIN_VERSION_RELEASE * VERSION_RELEASE); + +(* Check if linked versions are supported *) +{$IF (LIBAVFORMAT_VERSION < LIBAVFORMAT_MIN_VERSION)} + {$MESSAGE Error 'Linked version of libavformat is too old!'} +{$IFEND} + +(* Check if linked versions are supported *) +{$IF (LIBAVFORMAT_VERSION > LIBAVFORMAT_MAX_VERSION)} + {$MESSAGE Error 'Linked version of libavformat is not yet supported!'} +{$IFEND} + +{$IF LIBAVFORMAT_VERSION >= 52020000} // 52.20.0 +(** + * I return the LIBAVFORMAT_VERSION_INT constant. You got + * a fucking problem with that, douchebag? + *) +function avformat_version(): cuint; + cdecl; external av__format; +{$IFEND} + +{$IF LIBAVFORMAT_VERSION >= 52039002} // 52.39.2 +(** + * Returns the libavformat build-time configuration. + *) +function avformat_configuration(): {const} PansiChar; + cdecl; external av__format; + +(** + * Returns the libavformat license. + *) +function avformat_license(): {const} PansiChar; + cdecl; external av__format; +{$IFEND} + +type + PAVFile = Pointer; + +(* + * Public Metadata API. + * The metadata API allows libavformat to export metadata tags to a client + * application using a sequence of key/value pairs. Like all strings in FFmpeg, + * metadata must be stored as UTF-8 encoded Unicode. Note that metadata + * exported by demuxers isn't checked to be valid UTF-8 in most cases. + * Important concepts to keep in mind: + * 1. Keys are unique; there can never be 2 tags with the same key. This is + * also meant semantically, i.e., a demuxer should not knowingly produce + * several keys that are literally different but semantically identical. + * E.g., key=Author5, key=Author6. In this example, all authors must be + * placed in the same tag. + * 2. Metadata is flat, not hierarchical; there are no subtags. If you + * want to store, e.g., the email address of the child of producer Alice + * and actor Bob, that could have key=alice_and_bobs_childs_email_address. + * 3. A tag whose value is localized for a particular language is appended + * with a dash character ('-') and the ISO 639-2/B 3-letter language code. + * For example: Author-ger=Michael, Author-eng=Mike + * The original/default language is in the unqualified "Author" tag. + * A demuxer should set a default if it sets any translated tag. + *) +const + AV_METADATA_MATCH_CASE = 1; + AV_METADATA_IGNORE_SUFFIX = 2; +{$IF LIBAVFORMAT_VERSION >= 52043000} // >= 52.43.0 + AV_METADATA_DONT_STRDUP_KEY = 4; + AV_METADATA_DONT_STRDUP_VAL = 8; +{$IFEND} +{$IF LIBAVFORMAT_VERSION >= 52061000} // >= 52.61.0 + AV_METADATA_DONT_OVERWRITE = 16; +{$IFEND} + +type + PAVMetadataTag = ^TAVMetadataTag; + TAVMetadataTag = record + key: PAnsiChar; + value: PAnsiChar; + end; + + PAVMetadata = Pointer; + +{$IF LIBAVFORMAT_VERSION > 52024001} // > 52.24.1 +{$IF LIBAVFORMAT_VERSION_MAJOR = 52} +(** + * Gets a metadata element with matching key. + * @param prev Set to the previous matching element to find the next. + * If set to NULL the first matching element is returned. + * @param flags Allows case as well as suffix-insensitive comparisons. + * @return Found tag or NULL, changing key or value leads to undefined behavior. + *) +function av_metadata_get(m: PAVMetadata; key: {const} PAnsiChar; + prev: {const} PAVMetadataTag ; flags: cint): PAVMetadataTag; + cdecl; external av__format; + +(** + * Sets the given tag in m, overwriting an existing tag. + * @param key tag key to add to m (will be av_strduped) + * @param value tag value to add to m (will be av_strduped) + * @return >= 0 on success otherwise an error code <0 + * @deprecated Use av_metadata_set2() instead. + *) +function av_metadata_set(var pm: PAVMetadata; key: {const} PAnsiChar; value: {const} PAnsiChar): cint; + cdecl; external av__format; +{$IF LIBAVFORMAT_VERSION >= 52061000} // >= 52.61.0 + deprecated; +{$IFEND} +{$IFEND} + +{$IF LIBAVFORMAT_VERSION >= 52043000} // >= 52.43.0 +(** + * Sets the given tag in m, overwriting an existing tag. + * @param key tag key to add to m (will be av_strduped depending on flags) + * @param value tag value to add to m (will be av_strduped depending on flags) + * @return >= 0 on success otherwise an error code <0 + *) +function av_metadata_set2(var pm: PAVMetadata; key: {const} PAnsiChar; value: {const} PAnsiChar; flags: cint): cint; + cdecl; external av__format; +{$IFEND} + +(** + * Frees all the memory allocated for an AVMetadata struct. + *) +procedure av_metadata_free(var m: PAVMetadata); + cdecl; external av__format; +{$IFEND} + +(* packet functions *) + +{$IF LIBAVFORMAT_VERSION < 52032000} // < 52.32.0 +type + PAVPacket = ^TAVPacket; + TAVPacket = record + (** + * Presentation timestamp in time_base units; the time at which the + * decompressed packet will be presented to the user. + * Can be AV_NOPTS_VALUE if it is not stored in the file. + * pts MUST be larger or equal to dts as presentation can not happen before + * decompression, unless one wants to view hex dumps. Some formats misuse + * the terms dts and pts/cts to mean something different. Such timestamps + * must be converted to true pts/dts before they are stored in AVPacket. + *) + pts: cint64; + (** + * Decompression timestamp in time_base units; the time at which the + * packet is decompressed. + * Can be AV_NOPTS_VALUE if it is not stored in the file. + *) + dts: cint64; + data: PByteArray; + size: cint; + stream_index: cint; + flags: cint; + (** + * Duration of this packet in time_base units, 0 if unknown. + * Equals next_pts - this_pts in presentation order. + *) + duration: cint; + destruct: procedure (p: PAVPacket); cdecl; + priv: pointer; + pos: cint64; ///< byte position in stream, -1 if unknown + + {$IF LIBAVFORMAT_VERSION >= 52022000} // 52.22.0 + (** + * Time difference in stream time base units from the pts of this + * packet to the point at which the output from the decoder has converged + * independent from the availability of previous frames. That is, the + * frames are virtually identical no matter if decoding started from + * the very first frame or from this keyframe. + * Is AV_NOPTS_VALUE if unknown. + * This field is not the display duration of the current packet. + * + * The purpose of this field is to allow seeking in streams that have no + * keyframes in the conventional sense. It corresponds to the + * recovery point SEI in H.264 and match_time_delta in NUT. It is also + * essential for some types of subtitle streams to ensure that all + * subtitles are correctly displayed after seeking. + *) + convergence_duration: cint64; + {$IFEND} + end; + +const + PKT_FLAG_KEY = $0001; + +procedure av_destruct_packet_nofree(var pkt: TAVPacket); + cdecl; external av__format; + +(** + * Default packet destructor. + *) +procedure av_destruct_packet(var pkt: TAVPacket); + cdecl; external av__format; + +(** + * Initialize optional fields of a packet with default values. + * + * @param pkt packet + *) +procedure av_init_packet(var pkt: TAVPacket); +{$IF LIBAVFORMAT_VERSION >= 51012002} // 51.12.2 + cdecl; external av__format; +{$IFEND} + +(** + * Allocate the payload of a packet and initialize its fields with + * default values. + * + * @param pkt packet + * @param size wanted payload size + * @return 0 if OK, AVERROR_xxx otherwise + *) +function av_new_packet(var pkt: TAVPacket; size: cint): cint; + cdecl; external av__format; +{$IFEND} + +(** + * Allocate and read the payload of a packet and initialize its fields with + * default values. + * + * @param pkt packet + * @param size desired payload size + * @return >0 (read size) if OK, AVERROR_xxx otherwise + *) +function av_get_packet(s: PByteIOContext; var pkt: TAVPacket; size: cint): cint; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION < 52032000} // < 52.32.0 +(** + * @warning This is a hack - the packet memory allocation stuff is broken. The + * packet is allocated if it was not really allocated. + *) +function av_dup_packet(pkt: PAVPacket): cint; + cdecl; external av__format; + +(** + * Free a packet. + * + * @param pkt packet to free + *) +procedure av_free_packet(pkt: PAVPacket); {$IFDEF HasInline}inline;{$ENDIF} +{$IFEND} + +(*************************************************) +(* fractional numbers for exact pts handling *) + +type + (** + * The exact value of the fractional number is: 'val + num / den'. + * num is assumed to be 0 <= num < den. + *) + PAVFrac = ^TAVFrac; + TAVFrac = record + val, num, den: cint64; + end; + +(*************************************************) +(* input/output formats *) + +type + (** This structure contains the data a format has to probe a file. *) + TAVProbeData = record + filename: PAnsiChar; + buf: PByteArray; (**< Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero. *) + buf_size: cint; (**< Size of buf except extra allocated bytes *) + end; + +const + AVPROBE_SCORE_MAX = 100; ///< Maximum score, half of that is used for file-extension-based detection + AVPROBE_PADDING_SIZE = 32; ///< extra allocated bytes at the end of the probe buffer + + //! Demuxer will use url_fopen, no opened file should be provided by the caller. + AVFMT_NOFILE = $0001; + AVFMT_NEEDNUMBER = $0002; (**< Needs '%d' in filename. *) + AVFMT_SHOW_IDS = $0008; (**< Show format stream IDs numbers. *) + AVFMT_RAWPICTURE = $0020; (**< Format wants AVPicture structure for + raw picture data. *) + AVFMT_GLOBALHEADER = $0040; (**< Format wants global header. *) + AVFMT_NOTIMESTAMPS = $0080; (**< Format does not need / have any timestamps. *) + AVFMT_GENERIC_INDEX = $0100; (**< Use generic index building code. *) + AVFMT_TS_DISCONT = $0200; (**< Format allows timestamp discontinuities. *) + {$IF LIBAVFORMAT_VERSION >= 52029002} // 52.29.2 + AVFMT_VARIABLE_FPS = $0400; (**< Format allows variable fps. *) + {$IFEND} + {$IF LIBAVFORMAT_VERSION >= 52052000} // 52.52.0 + AVFMT_NODIMENSIONS = $0800; (**< Format does not need width/height *) + {$IFEND} + + // used by AVIndexEntry + AVINDEX_KEYFRAME = $0001; + + AVFMTCTX_NOHEADER = $0001; (**< signal that no header is present + (streams are added dynamically) *) +{$IF LIBAVFORMAT_VERSION_MAJOR < 53} + MAX_STREAMS = 20; +{$ELSE} + MAX_STREAMS = 100; +{$IFEND} + + AVFMT_NOOUTPUTLOOP = -1; + AVFMT_INFINITEOUTPUTLOOP = 0; + AVFMT_FLAG_GENPTS = $0001; ///< Generate missing pts even if it requires parsing future frames. + AVFMT_FLAG_IGNIDX = $0002; ///< Ignore index. + AVFMT_FLAG_NONBLOCK = $0004; ///< Do not block when reading packets from input. +{$IF LIBAVFORMAT_VERSION >= 52048000} // >= 52.48.0 + AVFMT_FLAG_IGNDTS = $0008; ///< Ignore DTS on frames that contain both DTS & PTS +{$IFEND} +{$IF LIBAVFORMAT_VERSION >= 52060000} // >= 52.60.0 + AVFMT_FLAG_NOFILLIN = $0010; ///< Do not infer any values from other values, just return what is stored in the container + AVFMT_FLAG_NOPARSE = $0020; ///< Do not use AVParsers, you also must set AVFMT_FLAG_NOFILLIN as the fillin code works on frames and no parsing -> no frames. Also seeking to frames can not work if parsing to find frame boundaries has been disabled +{$IFEND} +{$IF LIBAVFORMAT_VERSION >= 52063000} // >= 52.63.0 + AVFMT_FLAG_RTP_HINT = $0040; ///< Add RTP hinting to the output file +{$IFEND} + + // used by AVStream + MAX_REORDER_DELAY = 16; + + // used by TAVProgram + AV_PROGRAM_RUNNING = 1; + + + AV_DISPOSITION_DEFAULT = $0001; + AV_DISPOSITION_DUB = $0002; + AV_DISPOSITION_ORIGINAL = $0004; + AV_DISPOSITION_COMMENT = $0008; + AV_DISPOSITION_LYRICS = $0010; + AV_DISPOSITION_KARAOKE = $0020; + + // used by TAVFormatContext.debug + FF_FDEBUG_TS = 0001; + + {$IF LIBAVFORMAT_VERSION >= 52034000} // >= 52.34.0 + {$IF LIBAVFORMAT_VERSION < 52039000} // < 52.39.0 + MAX_PROBE_PACKETS = 100; + {$ELSE} + MAX_PROBE_PACKETS = 2500; + {$IFEND} + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52035000} // >= 52.35.0 + {$IF LIBAVFORMAT_VERSION < 52039000} // < 52.39.0 + RAW_PACKET_BUFFER_SIZE = 32000; + {$ELSE} + RAW_PACKET_BUFFER_SIZE = 2500000; + {$IFEND} + {$IFEND} + +type + PPAVCodecTag = ^PAVCodecTag; + PAVCodecTag = Pointer; + + PPAVFormatContext = ^PAVFormatContext; + PAVFormatContext = ^TAVFormatContext; + + PAVFormatParameters = ^TAVFormatParameters; + + PAVOutputFormat = ^TAVOutputFormat; + PAVProbeData = ^TAVProbeData; + + PAVInputFormat = ^TAVInputFormat; + PAVIndexEntry = ^TAVIndexEntry; + + PAVStream = ^TAVStream; + PAVPacketList = ^TAVPacketList; + + PPAVProgram = ^PAVProgram; + PAVProgram = ^TAVProgram; + + {$IF LIBAVFORMAT_VERSION < 51006000} // 51.6.0 + PAVImageFormat = ^TAVImageFormat; + PAVImageInfo = ^TAVImageInfo; + {$IFEND} + +{$IF LIBAVFORMAT_VERSION >= 52030001} // >= 52.30.1 +(** + * Convert all the metadata sets from ctx according to the source and + * destination conversion tables. + * @param d_conv destination tags format conversion table + * @param s_conv source tags format conversion table + *) + PAVMetadataConv = ^TAVMetadataConv; + TAVMetadataConv = record + ctx: PAVFormatContext; + d_conv: {const} PAVMetadataConv; + s_conv: {const} PAVMetadataConv; + end; +{$IFEND} + + PAVChapter = ^TAVChapter; + TAVChapter = record + id: cint; ///< unique ID to identify the chapter + time_base: TAVRational; ///< time base in which the start/end timestamps are specified + start, end_: cint64; ///< chapter start/end time in time_base units + {$IF LIBAVFORMAT_VERSION < 53000000} // 53.00.0 + title: PAnsiChar; ///< chapter title + {$IFEND} + {$IF LIBAVFORMAT_VERSION >= 52024001} // 52.24.1 + metadata: PAVMetadata; + {$IFEND} + end; + TAVChapterArray = array[0..(MaxInt div SizeOf(TAVChapter))-1] of TAVChapter; + PAVChapterArray = ^TAVChapterArray; + + TAVFormatParameters = record + time_base: TAVRational; + sample_rate: cint; + channels: cint; + width: cint; + height: cint; + pix_fmt: TAVPixelFormat; + {$IF LIBAVFORMAT_VERSION < 51006000} // 51.6.0 + image_format: PAVImageFormat; + {$IFEND} + channel: cint; (**< Used to select DV channel. *) + {$IF LIBAVFORMAT_VERSION_MAJOR < 52} + device: PAnsiChar; (* video, audio or DV device, if LIBAVFORMAT_VERSION_INT < (52<<16) *) + {$IFEND} + standard: PAnsiChar; (**< TV standard, NTSC, PAL, SECAM *) + { Delphi does not support bit fields -> use bf_flags instead + unsigned int mpeg2ts_raw:1; (**< Force raw MPEG-2 transport stream output, if possible. *) + unsigned int mpeg2ts_compute_pcr:1; (**< Compute exact PCR for each transport + stream packet (only meaningful if + mpeg2ts_raw is TRUE). *) + unsigned int initial_pause:1; (**< Do not begin to play the stream + immediately (RTSP only). *) + unsigned int prealloced_context:1; + } + bf_flags: byte; // 0:mpeg2ts_raw/1:mpeg2ts_compute_pcr/2:initial_pause/3:prealloced_context + {$IF LIBAVFORMAT_VERSION_MAJOR < 53} + video_codec_id: TCodecID; + audio_codec_id: TCodecID; + {$IFEND} + end; + + TAVOutputFormat = record + name: PAnsiChar; + (** + * Descriptive name for the format, meant to be more human-readable + * than name. You should use the NULL_IF_CONFIG_SMALL() macro + * to define it. + *) + long_name: PAnsiChar; + mime_type: PAnsiChar; + extensions: PAnsiChar; (**< comma-separated filename extensions *) + (** size of private data so that it can be allocated in the wrapper *) + priv_data_size: cint; + (* output support *) + audio_codec: TCodecID; (**< default audio codec *) + video_codec: TCodecID; (**< default video codec *) + write_header: function (c: PAVFormatContext): cint; cdecl; + write_packet: function (c: PAVFormatContext; pkt: PAVPacket): cint; cdecl; + write_trailer: function (c: PAVFormatContext): cint; cdecl; + (** can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER *) + flags: cint; + (** Currently only used to set pixel format if not YUV420P. *) + set_parameters: function (c: PAVFormatContext; f: PAVFormatParameters): cint; cdecl; + interleave_packet: function (s: PAVFormatContext; out_: PAVPacket; + in_: PAVPacket; flush: cint): cint; cdecl; + + {$IF LIBAVFORMAT_VERSION >= 51008000} // 51.8.0 + (** + * List of supported codec_id-codec_tag pairs, ordered by "better + * choice first". The arrays are all terminated by CODEC_ID_NONE. + *) + codec_tag: {const} PPAVCodecTag; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 51012002} // 51.12.2 + subtitle_codec: TCodecID; (**< default subtitle codec *) + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52030001} // 52.30.1 + {const} metadata_conv: PAVMetadataConv; + {$IFEND} + + (* private fields *) + next: PAVOutputFormat; + end; + + TAVInputFormat = record + name: PAnsiChar; + (** + * Descriptive name for the format, meant to be more human-readable + * than name. You should use the NULL_IF_CONFIG_SMALL() macro + * to define it. + *) + long_name: PAnsiChar; + (** Size of private data so that it can be allocated in the wrapper. *) + priv_data_size: cint; + (** + * Tell if a given file has a chance of being parsed as this format. + * The buffer provided is guaranteed to be AVPROBE_PADDING_SIZE bytes + * big so you do not have to check for that unless you need more. + *) + read_probe: function (p: PAVProbeData): cint; cdecl; + (** Read the format header and initialize the AVFormatContext + structure. Return 0 if OK. 'ap' if non-NULL contains + additional parameters. Only used in raw format right + now. 'av_new_stream' should be called to create new streams. *) + read_header: function (c: PAVFormatContext; ap: PAVFormatParameters): cint; cdecl; + (** Read one packet and put it in 'pkt'. pts and flags are also + set. 'av_new_stream' can be called only if the flag + AVFMTCTX_NOHEADER is used. + @return 0 on success, < 0 on error. + When returning an error, pkt must not have been allocated + or must be freed before returning *) + read_packet: function (c: PAVFormatContext; var pkt: TAVPacket): cint; cdecl; + (** Close the stream. The AVFormatContext and AVStreams are not + freed by this function *) + read_close: function (c: PAVFormatContext): cint; cdecl; + +{$IF LIBAVFORMAT_VERSION_MAJOR < 53} + (** + * Seek to a given timestamp relative to the frames in + * stream component stream_index. + * @param stream_index Must not be -1. + * @param flags Selects which direction should be preferred if no exact + * match is available. + * @return >= 0 on success (but not necessarily the new offset) + *) + read_seek: function (c: PAVFormatContext; stream_index: cint; + timestamp: cint64; flags: cint): cint; cdecl; +{$IFEND} + + (** + * Gets the next timestamp in stream[stream_index].time_base units. + * @return the timestamp or AV_NOPTS_VALUE if an error occurred + *) + read_timestamp: function (s: PAVFormatContext; stream_index: cint; + pos: pint64; pos_limit: cint64): cint64; cdecl; + (** Can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER. *) + flags: cint; + (** If extensions are defined, then no probe is done. You should + usually not use extension format guessing because it is not + reliable enough *) + extensions: PAnsiChar; + (** General purpose read-only value that the format can use. *) + value: cint; + + (** Starts/resumes playing - only meaningful if using a network-based format + (RTSP). *) + read_play: function (c: PAVFormatContext): cint; cdecl; + + (** Pauses playing - only meaningful if using a network-based format + (RTSP). *) + read_pause: function (c: PAVFormatContext): cint; cdecl; + + {$IF LIBAVFORMAT_VERSION >= 51008000} // 51.8.0 + codec_tag: {const} PPAVCodecTag; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52030000} // 52.30.0 + (** + * Seeks to timestamp ts. + * Seeking will be done so that the point from which all active streams + * can be presented successfully will be closest to ts and within min/max_ts. + * Active streams are all streams that have AVStream.discard < AVDISCARD_ALL. + *) + read_seek2: function (s: PAVFormatContext; + stream_index: cint; + min_ts: cint64; + ts: cint64; + max_ts: cint64; + flags: cint): cint; cdecl; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52030001} // 52.30.1 + {const} metadata_conv: PAVMetadataConv; + {$IFEND} + + (* private fields *) + next: PAVInputFormat; + end; + + TAVStreamParseType = ( + AVSTREAM_PARSE_NONE, + AVSTREAM_PARSE_FULL, (**< full parsing and repack *) + AVSTREAM_PARSE_HEADERS, (**< Only parse headers, do not repack. *) + AVSTREAM_PARSE_TIMESTAMPS (**< full parsing and interpolation of timestamps for frames not starting on a packet boundary *) + ); + + TAVIndexEntry = record + pos: cint64; + timestamp: cint64; + { Delphi doesn't support bitfields -> use flags_size instead + int flags:2; + int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs. 32 bytes due to possible 8-byte alignment). + } + flags_size: cint; // 0..1: flags, 2..31: size + min_distance: cint; (**< Minimum distance between this and the previous keyframe, used to avoid unneeded searching. *) + end; + + (** + * Stream structure. + * New fields can be added to the end with minor version bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. + * sizeof(AVStream) must not be used outside libav*. + *) + TAVStream = record + index: cint; (**< stream index in AVFormatContext *) + id: cint; (**< format-specific stream ID *) + codec: PAVCodecContext; (**< codec context *) + (** + * Real base framerate of the stream. + * This is the lowest framerate with which all timestamps can be + * represented accurately (it is the least common multiple of all + * framerates in the stream). Note, this value is just a guess! + * For example, if the time base is 1/90000 and all frames have either + * approximately 3600 or 1800 timer ticks, then r_frame_rate will be 50/1. + *) + r_frame_rate: TAVRational; + priv_data: pointer; + + (* internal data used in av_find_stream_info() *) + first_dts: cint64; + {$IF LIBAVFORMAT_VERSION_MAJOR < 52} + codec_info_nb_frames: cint; + {$IFEND} + + (** encoding: pts generation when outputting stream *) + pts: TAVFrac; + (** + * This is the fundamental unit of time (in seconds) in terms + * of which frame timestamps are represented. For fixed-fps content, + * time base should be 1/framerate and timestamp increments should be 1. + *) + time_base: TAVRational; + pts_wrap_bits: cint; (* number of bits in pts (used for wrapping control) *) + (* ffmpeg.c private use *) + stream_copy: cint; (**< If set, just copy stream. *) + discard: TAVDiscard; ///< Selects which packets can be discarded at will and do not need to be demuxed. + //FIXME move stuff to a flags field? + (** Quality, as it has been removed from AVCodecContext and put in AVVideoFrame. + * MN:dunno if thats the right place, for it *) + quality: cfloat; + (** + * Decoding: pts of the first frame of the stream, in stream time base. + * Only set this if you are absolutely 100% sure that the value you set + * it to really is the pts of the first frame. + * This may be undefined (AV_NOPTS_VALUE). + * @note The ASF header does NOT contain a correct start_time the ASF + * demuxer must NOT set this. + *) + start_time: cint64; + (** + * Decoding: duration of the stream, in stream time base. + * If a source file does not specify a duration, but does specify + * a bitrate, this value will be estimated from bitrate and file size. + *) + duration: cint64; + + {$IF LIBAVFORMAT_VERSION_MAJOR < 53} + language: array [0..3] of PAnsiChar; (* ISO 639-2/B 3-letter language code (empty string if undefined) *) + {$IFEND} + + (* av_read_frame() support *) + need_parsing: TAVStreamParseType; + parser: PAVCodecParserContext; + + cur_dts: cint64; + last_IP_duration: cint; + last_IP_pts: cint64; + (* av_seek_frame() support *) + index_entries: PAVIndexEntry; (**< Only used if the format does not + support seeking natively. *) + nb_index_entries: cint; + index_entries_allocated_size: cuint; + + nb_frames: cint64; ///< number of frames in this stream if known or 0 + + {$IF (LIBAVFORMAT_VERSION >= 50006000) and (LIBAVFORMAT_VERSION_MAJOR < 53)} // 50.6.0 - 53.0.0 + unused: array [0..4] of cint64; + {$IFEND} + + {$IF (LIBAVFORMAT_VERSION >= 52006000) and (LIBAVFORMAT_VERSION_MAJOR < 53)} // 52.6.0 - 53.0.0 + filename: PAnsiChar; (**< source filename of the stream *) + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52008000} // 52.8.0 + disposition: cint; (**< AV_DISPOSITION_* bitfield *) + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52019000} // 52.19.0 + probe_data: TAVProbeData; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52021000} // 52.21.0 + pts_buffer: array [0..MAX_REORDER_DELAY] of cint64; + + (** + * sample aspect ratio (0 if unknown) + * - encoding: Set by user. + * - decoding: Set by libavformat. + *) + sample_aspect_ratio: TAVRational; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52024001} // 52.24.1 + metadata: PAVMetadata; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION > 52024001} // > 52.24.1 + {* av_read_frame() support *} + cur_ptr: {const} PCuint8; + cur_len: cint; + cur_pkt: TAVPacket; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52030000} // > 52.30.0 + // Timestamp generation support: + (** + * Timestamp corresponding to the last dts sync point. + * + * Initialized when AVCodecParserContext.dts_sync_point >= 0 and + * a DTS is received from the underlying container. Otherwise set to + * AV_NOPTS_VALUE by default. + *) + reference_dts: cint64; + {$IFEND} + {$IF LIBAVFORMAT_VERSION >= 52034000} // >= 52.34.0 + (** + * Number of packets to buffer for codec probing + * NOT PART OF PUBLIC API + *) + probe_packets: cint; + {$IFEND} + {$IF LIBAVFORMAT_VERSION >= 52038000} // >= 52.38.0 + (** + * last packet in packet_buffer for this stream when muxing. + * used internally, NOT PART OF PUBLIC API, dont read or write from outside of libav* + *) + last_in_packet_buffer: PAVPacketList; + {$IFEND} + {$IF LIBAVFORMAT_VERSION >= 52041000} // >= 52.41.0 + (** + * Average framerate + *) + avg_frame_rate: TAVRational; + {$IFEND} + {$IF LIBAVFORMAT_VERSION >= 52054000} // >= 52.54.0 + (** + * Number of frames that have been demuxed during av_find_stream_info() + *) + codec_info_nb_frames: cint; + {$IFEND} + end; + + (** + * Format I/O context. + * New fields can be added to the end with minor version bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. + * sizeof(AVFormatContext) must not be used outside libav*. + *) + TAVFormatContext = record + av_class: PAVClass; (**< Set by avformat_alloc_context. *) + (* Can only be iformat or oformat, not both at the same time. *) + iformat: PAVInputFormat; + oformat: PAVOutputFormat; + priv_data: pointer; + + {$IF LIBAVFORMAT_VERSION_MAJOR >= 52} + pb: PByteIOContext; + {$ELSE} + pb: TByteIOContext; + {$IFEND} + + nb_streams: cuint; + streams: array [0..MAX_STREAMS - 1] of PAVStream; + filename: array [0..1023] of AnsiChar; (* input or output filename *) + (* stream info *) + timestamp: cint64; + {$IF LIBAVFORMAT_VERSION < 53000000} // 53.00.0 + title: array [0..511] of AnsiChar; + author: array [0..511] of AnsiChar; + copyright: array [0..511] of AnsiChar; + comment: array [0..511] of AnsiChar; + album: array [0..511] of AnsiChar; + year: cint; (**< ID3 year, 0 if none *) + track: cint; (**< track number, 0 if none *) + genre: array [0..31] of AnsiChar; (**< ID3 genre *) + {$IFEND} + + ctx_flags: cint; (**< Format-specific flags, see AVFMTCTX_xx *) + (* private data for pts handling (do not modify directly). *) + (** This buffer is only needed when packets were already buffered but + not decoded, for example to get the codec parameters in MPEG + streams. *) + packet_buffer: PAVPacketList; + + (** Decoding: position of the first frame of the component, in + AV_TIME_BASE fractional seconds. NEVER set this value directly: + It is deduced from the AVStream values. *) + start_time: cint64; + (** Decoding: duration of the stream, in AV_TIME_BASE fractional + seconds. Only set this value if you know none of the individual stream + durations and also dont set any of them. This is deduced from the + AVStream values if not set. *) + duration: cint64; + (** decoding: total file size, 0 if unknown *) + file_size: cint64; + (** Decoding: total stream bitrate in bit/s, 0 if not + available. Never set it directly if the file_size and the + duration are known as ffmpeg can compute it automatically. *) + bit_rate: cint; + + (* av_read_frame() support *) + cur_st: PAVStream; + {$IF LIBAVFORMAT_VERSION_MAJOR < 53} + cur_ptr_deprecated: pbyte; + cur_len_deprecated: cint; + cur_pkt_deprecated: TAVPacket; + {$IFEND} + + (* av_seek_frame() support *) + data_offset: cint64; (* offset of the first packet *) + index_built: cint; + + mux_rate: cint; + {$IF LIBAVFORMAT_VERSION < 52034001} // < 52.34.1 + packet_size: cint; + {$ELSE} + packet_size: cuint; + {$IFEND} + preload: cint; + max_delay: cint; + + (* number of times to loop output in formats that support it *) + loop_output: cint; + + flags: cint; + loop_input: cint; + + {$IF LIBAVFORMAT_VERSION >= 50006000} // 50.6.0 + (** decoding: size of data to probe; encoding: unused. *) + probesize: cuint; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 51009000} // 51.9.0 + (** + * Maximum time (in AV_TIME_BASE units) during which the input should + * be analyzed in av_find_stream_info(). + *) + max_analyze_duration: cint; + + key: pbyte; + keylen : cint; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 51014000} // 51.14.0 + nb_programs: cuint; + programs: PPAVProgram; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52003000} // 52.3.0 + (** + * Forced video codec_id. + * Demuxing: Set by user. + *) + video_codec_id: TCodecID; + (** + * Forced audio codec_id. + * Demuxing: Set by user. + *) + audio_codec_id: TCodecID; + (** + * Forced subtitle codec_id. + * Demuxing: Set by user. + *) + subtitle_codec_id: TCodecID; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0 + (** + * Maximum amount of memory in bytes to use for the index of each stream. + * If the index exceeds this size, entries will be discarded as + * needed to maintain a smaller size. This can lead to slower or less + * accurate seeking (depends on demuxer). + * Demuxers for which a full in-memory index is mandatory will ignore + * this. + * muxing : unused + * demuxing: set by user + *) + max_index_size: cuint; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52009000} // 52.9.0 + (** + * Maximum amount of memory in bytes to use for buffering frames + * obtained from realtime capture devices. + *) + max_picture_buffer: cuint; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52014000} // 52.14.0 + nb_chapters: cuint; + chapters: PAVChapterArray; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52016000} // 52.16.0 + (** + * Flags to enable debugging. + *) + debug: cint; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52019000} // 52.19.0 + (** + * Raw packets from the demuxer, prior to parsing and decoding. + * This buffer is used for buffering packets until the codec can + * be identified, as parsing cannot be done without knowing the + * codec. + *) + raw_packet_buffer: PAVPacketList; + raw_packet_buffer_end: PAVPacketList; + + packet_buffer_end: PAVPacketList; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52024001} // 52.24.1 + metadata: PAVMetadata; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52035000} // 52.35.0 + (** + * Remaining size available for raw_packet_buffer, in bytes. + * NOT PART OF PUBLIC API + *) + raw_packet_buffer_remaining_size: cint; + {$IFEND} + + {$IF LIBAVFORMAT_VERSION >= 52056000} // 52.56.0 + (** + * Start time of the stream in real world time, in microseconds + * since the unix epoch (00:00 1st January 1970). That is, pts=0 + * in the stream was captured at this real world time. + * - encoding: Set by user. + * - decoding: Unused. + *) + start_time_realtime: cint64; + {$IFEND} + + end; + + (** + * New fields can be added to the end with minor version bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. + * sizeof(AVProgram) must not be used outside libav*. + *) + TAVProgram = record + id : cint; + {$IF LIBAVFORMAT_VERSION < 53000000} // 53.00.0 + provider_name : PAnsiChar; ///< network name for DVB streams + name : PAnsiChar; ///< service name for DVB streams + {$IFEND} + flags : cint; + discard : TAVDiscard; ///< selects which program to discard and which to feed to the caller + {$IF LIBAVFORMAT_VERSION >= 51016000} // 51.16.0 + stream_index : PCardinal; + nb_stream_indexes : PCardinal; + {$IFEND} + {$IF LIBAVFORMAT_VERSION >= 52024001} // 52.24.1 + metadata: PAVMetadata; + {$IFEND} + end; + + TAVPacketList = record + pkt: TAVPacket; + next: PAVPacketList; + end; + +{$IF LIBAVFORMAT_VERSION < 51006000} // 51.6.0 + (* still image support *) + PAVInputImageContext = pointer; {deprecated} + + (* still image support *) + TAVImageInfo = record + pix_fmt: TAVPixelFormat; (* requested pixel format *) + width: cint; (* requested width *) + height: cint; (* requested height *) + interleaved: cint; (* image is interleaved (e.g. interleaved GIF) *) + pict: TAVPicture; (* returned allocated image *) + end; {deprecated} + + TAVImageFormat = record + name: PAnsiChar; + extensions: PAnsiChar; + (* tell if a given file has a chance of being parsing by this format *) + img_probe: function (d: PAVProbeData): cint; cdecl; + (* read a whole image. 'alloc_cb' is called when the image size is + known so that the caller can allocate the image. If 'allo_cb' + returns non zero, then the parsing is aborted. Return '0' if + OK. *) + img_read: function (b: PByteIOContext; alloc_cb: pointer; ptr: pointer): cint; cdecl; + (* write the image *) + supported_pixel_formats: cint; (* mask of supported formats for output *) + img_write: function (b: PByteIOContext; i: PAVImageInfo): cint; cdecl; + flags: cint; + next: PAVImageFormat; + end; {deprecated} + +procedure av_register_image_format(img_fmt: PAVImageFormat); + cdecl; external av__format; deprecated; + +function av_probe_image_format(pd: PAVProbeData): PAVImageFormat; + cdecl; external av__format; deprecated; + +function guess_image_format(filename: PAnsiChar): PAVImageFormat; + cdecl; external av__format; deprecated; + +function av_read_image(pb: PByteIOContext; filename: PAnsiChar; + fmt: PAVImageFormat; + alloc_cb: pointer; opaque: pointer): cint; + cdecl; external av__format; deprecated; + +function av_write_image(pb: PByteIOContext; fmt: PAVImageFormat; img: PAVImageInfo): cint; + cdecl; external av__format; deprecated; +{$IFEND} + +{$IF LIBAVFORMAT_VERSION_MAJOR < 53} +{ +var + first_iformat: PAVInputFormat; external av__format; + first_oformat: PAVOutputFormat; external av__format; +} +{$IFEND} + +{$IF LIBAVFORMAT_VERSION >= 52003000} // 52.3.0 +(** + * If f is NULL, returns the first registered input format, + * if f is non-NULL, returns the next registered input format after f + * or NULL if f is the last one. + *) +function av_iformat_next(f: PAVInputFormat): PAVInputFormat; + cdecl; external av__format; +(** + * If f is NULL, returns the first registered output format, + * if f is non-NULL, returns the next registered input format after f + * or NULL if f is the last one. + *) +function av_oformat_next(f: PAVOutputFormat): PAVOutputFormat; + cdecl; external av__format; +{$IFEND} + +function av_guess_image2_codec(filename: {const} PAnsiChar): TCodecID; + cdecl; external av__format; + +(* XXX: Use automatic init with either ELF sections or C file parser *) +(* modules. *) + +(* utils.c *) +procedure av_register_input_format(format: PAVInputFormat); + cdecl; external av__format; + +procedure av_register_output_format(format: PAVOutputFormat); + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION_MAJOR < 53} // < 53 +function guess_stream_format(short_name: PAnsiChar; + filename: PAnsiChar; + mime_type: PAnsiChar): PAVOutputFormat; + cdecl; external av__format; deprecated; +{$IFEND} + +(** + * Returns the output format in the list of registered output formats + * which best matches the provided parameters, or returns NULL if + * there is no match. + * + * @param short_name if non-NULL checks if short_name matches with the + * names of the registered formats + * @param filename if non-NULL checks if filename terminates with the + * extensions of the registered formats + * @param mime_type if non-NULL checks if mime_type matches with the + * MIME type of the registered formats + *) +(** + * @deprecated Use av_guess_format() instead. + *) +function guess_format(short_name: PAnsiChar; + filename: PAnsiChar; + mime_type: PAnsiChar): PAVOutputFormat; + cdecl; external av__format; +{$IF LIBAVFORMAT_VERSION >= 52045000} // >= 52.45.0 + deprecated; +function av_guess_format(short_name: PAnsiChar; + filename: PAnsiChar; + mime_type: PAnsiChar): PAVOutputFormat; + cdecl; external av__format; +{$IFEND} + +(** + * Guesses the codec ID based upon muxer and filename. + *) +function av_guess_codec(fmt: PAVOutputFormat; short_name: PAnsiChar; + filename: PAnsiChar; mime_type: PAnsiChar; + type_: TCodecType): TCodecID; + cdecl; external av__format; + +(** + * Sends a nice hexadecimal dump of a buffer to the specified file stream. + * + * @param f The file stream pointer where the dump should be sent to. + * @param buf buffer + * @param size buffer size + * + * @see av_hex_dump_log, av_pkt_dump, av_pkt_dump_log + *) +procedure av_hex_dump(f: PAVFile; buf: PByteArray; size: cint); + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 51011000} // 51.11.0 +(** + * Sends a nice hexadecimal dump of a buffer to the log. + * + * @param avcl A pointer to an arbitrary struct of which the first field is a + * pointer to an AVClass struct. + * @param level The importance level of the message, lower values signifying + * higher importance. + * @param buf buffer + * @param size buffer size + * + * @see av_hex_dump, av_pkt_dump, av_pkt_dump_log + *) +procedure av_hex_dump_log(avcl: Pointer; level: cint; buf: PByteArray; size: cint); + cdecl; external av__format; +{$IFEND} + +(** + * Sends a nice dump of a packet to the specified file stream. + * + * @param f The file stream pointer where the dump should be sent to. + * @param pkt packet to dump + * @param dump_payload True if the payload must be displayed, too. + *) +procedure av_pkt_dump(f: PAVFile; pkt: PAVPacket; dump_payload: cint); + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 51011000} // 51.11.0 +(** + * Sends a nice dump of a packet to the log. + * + * @param avcl A pointer to an arbitrary struct of which the first field is a + * pointer to an AVClass struct. + * @param level The importance level of the message, lower values signifying + * higher importance. + * @param pkt packet to dump + * @param dump_payload True if the payload must be displayed, too. + *) +procedure av_pkt_dump_log(avcl: Pointer; level: cint; pkt: PAVPacket; dump_payload: cint); + cdecl; external av__format; +{$IFEND} + +(** + * Initializes libavformat and registers all the muxers, demuxers and + * protocols. If you do not call this function, then you can select + * exactly which formats you want to support. + * + * @see av_register_input_format() + * @see av_register_output_format() + * @see av_register_protocol() + *) +procedure av_register_all(); + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 51008000} // 51.8.0 +(** + * Gets the CodecID for the given codec tag tag. + * If no codec id is found returns CODEC_ID_NONE. + * + * @param tags list of supported codec_id-codec_tag pairs, as stored + * in AVInputFormat.codec_tag and AVOutputFormat.codec_tag + *) +function av_codec_get_id(var tags: PAVCodecTag; tag: cuint): TCodecID; + cdecl; external av__format; + +(** + * Gets the codec tag for the given codec id id. + * If no codec tag is found returns 0. + * + * @param tags list of supported codec_id-codec_tag pairs, as stored + * in AVInputFormat.codec_tag and AVOutputFormat.codec_tag + *) +function av_codec_get_tag(var tags: PAVCodecTag; id: TCodecID): cuint; + cdecl; external av__format; +{$IFEND} + +(* media file input *) + +(** + * Finds AVInputFormat based on the short name of the input format. + *) +function av_find_input_format(short_name: PAnsiChar): PAVInputFormat; + cdecl; external av__format; + +(** + * Guesses file format. + * + * @param is_opened Whether the file is already opened; determines whether + * demuxers with or without AVFMT_NOFILE are probed. + *) +function av_probe_input_format(pd: PAVProbeData; is_opened: cint): PAVInputFormat; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 52062000} // 52.62.0 +(** + * Guesses the file format. + * + * @param is_opened Whether the file is already opened; determines whether + * demuxers with or without AVFMT_NOFILE are probed. + * @param score_max A probe score larger that this is required to accept a + * detection, the variable is set to the actual detection + * score afterwards. + * If the score is <= AVPROBE_SCORE_MAX / 4 it is recommended + * to retry with a larger probe buffer. + *) +function av_probe_input_format2(pd: PAVProbeData; is_opened: cint; score_max: PCint): PAVInputFormat; + cdecl; external av__format; +{$IFEND} + +(** + * Allocates all the structures needed to read an input stream. + * This does not open the needed codecs for decoding the stream[s]. + *) +function av_open_input_stream(var ic_ptr: PAVFormatContext; + pb: PByteIOContext; filename: PAnsiChar; + fmt: PAVInputFormat; ap: PAVFormatParameters): cint; + cdecl; external av__format; + +(** + * Opens a media file as input. The codecs are not opened. Only the file + * header (if present) is read. + * + * @param ic_ptr The opened media file handle is put here. + * @param filename filename to open + * @param fmt If non-NULL, force the file format to use. + * @param buf_size optional buffer size (zero if default is OK) + * @param ap Additional parameters needed when opening the file + * (NULL if default). + * @return 0 if OK, AVERROR_xxx otherwise + *) +function av_open_input_file(var ic_ptr: PAVFormatContext; filename: PAnsiChar; + fmt: PAVInputFormat; buf_size: cint; + ap: PAVFormatParameters): cint; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 52026000} // 52.26.0 +(** + * Allocates an AVFormatContext. + * Can be freed with av_free() but do not forget to free everything you + * explicitly allocated as well! + *) +function avformat_alloc_context(): PAVFormatContext; + cdecl; external av__format; +{$ELSE} + {$IF LIBAVFORMAT_VERSION_MAJOR < 53} +(** + * @deprecated Use avformat_alloc_context() instead. + *) +function av_alloc_format_context(): PAVFormatContext; + cdecl; external av__format; + {$IFEND} +{$IFEND} + +(** + * Reads packets of a media file to get stream information. This + * is useful for file formats with no headers such as MPEG. This + * function also computes the real framerate in case of MPEG-2 repeat + * frame mode. + * The logical file position is not changed by this function; + * examined packets may be buffered for later processing. + * + * @param ic media file handle + * @return >=0 if OK, AVERROR_xxx on error + * @todo Let the user decide somehow what information is needed so that + * we do not waste time getting stuff the user does not need. + *) +function av_find_stream_info(ic: PAVFormatContext): cint; + cdecl; external av__format; + +(** + * Reads a transport packet from a media file. + * + * This function is obsolete and should never be used. + * Use av_read_frame() instead. + * + * @param s media file handle + * @param pkt is filled + * @return 0 if OK, AVERROR_xxx on error + *) +function av_read_packet(s: PAVFormatContext; var pkt: TAVPacket): cint; + cdecl; external av__format; + +(** + * Returns the next frame of a stream. + * + * The returned packet is valid + * until the next av_read_frame() or until av_close_input_file() and + * must be freed with av_free_packet. For video, the packet contains + * exactly one frame. For audio, it contains an cint number of + * frames if each frame has a known fixed size (e.g. PCM or ADPCM + * data). If the audio frames have a variable size (e.g. MPEG audio), + * then it contains one frame. + * + * pkt->pts, pkt->dts and pkt->duration are always set to correct + * values in AVStream.time_base units (and guessed if the format cannot + * provide them). pkt->pts can be AV_NOPTS_VALUE if the video format + * has B-frames, so it is better to rely on pkt->dts if you do not + * decompress the payload. + * + * @return 0 if OK, < 0 on error or end of file + *) +function av_read_frame(s: PAVFormatContext; var pkt: TAVPacket): cint; + cdecl; external av__format; + +(** + * Seeks to the keyframe at timestamp. + * 'timestamp' in 'stream_index'. + * @param stream_index If stream_index is (-1), a default + * stream is selected, and timestamp is automatically converted + * from AV_TIME_BASE units to the stream specific time_base. + * @param timestamp Timestamp in AVStream.time_base units + * or, if no stream is specified, in AV_TIME_BASE units. + * @param flags flags which select direction and seeking mode + * @return >= 0 on success + *) +function av_seek_frame(s: PAVFormatContext; stream_index: cint; timestamp: cint64; + flags: cint): cint; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 52026000} // 52.26.0 +(** + * Seeks to timestamp ts. + * Seeking will be done so that the point from which all active streams + * can be presented successfully will be closest to ts and within min/max_ts. + * Active streams are all streams that have AVStream.discard < AVDISCARD_ALL. + * + * If flags contain AVSEEK_FLAG_BYTE, then all timestamps are in byte and + * are the file position (this may not be supported by all demuxers). + * If flags contain AVSEEK_FLAG_FRAME then all timestamps are in frames + * in the stream with stream_index (this may not be supported by all demuxers). + * Otherwise all timestamps are in units of the stream selected by stream_index + * or if stream_index is -1, in AV_TIME_BASE units. + * If flags contain AVSEEK_FLAG_ANY, then non-keyframes are treated as + * keyframes (this may not be supported by all demuxers). + * + * @param stream_index index of the stream which is used as time base reference. + * @param min_ts smallest acceptable timestamp + * @param ts target timestamp + * @param max_ts largest acceptable timestamp + * @param flags flags + * @return >=0 on success, error code otherwise + * + * @NOTE This is part of the new seek API which is still under construction. + * Thus do not use this yet. It may change at any time, do not expect + * ABI compatibility yet! + *) +function avformat_seek_file(s: PAVFormatContext; + stream_index: cint; + min_ts: cint64; + ts: cint64; + max_ts: cint64; + flags: cint): cint; + cdecl; external av__format; +{$IFEND} + +(** + * Starts playing a network-based stream (e.g. RTSP stream) at the + * current position. + *) +function av_read_play(s: PAVFormatContext): cint; + cdecl; external av__format; + +(** + * Pauses a network-based stream (e.g. RTSP stream). + * + * Use av_read_play() to resume it. + *) +function av_read_pause(s: PAVFormatContext): cint; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 52003000} // 52.3.0 +(** + * Frees a AVFormatContext allocated by av_open_input_stream. + * @param s context to free + *) +procedure av_close_input_stream(s: PAVFormatContext); + cdecl; external av__format; +{$IFEND} + +(** + * Closes a media file (but not its codecs). + * + * @param s media file handle + *) +procedure av_close_input_file(s: PAVFormatContext); + cdecl; external av__format; + +(** + * Adds a new stream to a media file. + * + * Can only be called in the read_header() function. If the flag + * AVFMTCTX_NOHEADER is in the format context, then new streams + * can be added in read_packet too. + * + * @param s media file handle + * @param id file-format-dependent stream ID + *) +function av_new_stream(s: PAVFormatContext; id: cint): PAVStream; + cdecl; external av__format; +{$IF LIBAVFORMAT_VERSION >= 51014000} // 51.14.0 +function av_new_program(s: PAVFormatContext; id: cint): PAVProgram; + cdecl; external av__format; +{$IFEND} + +{$IF LIBAVFORMAT_VERSION >= 52014000} // 52.14.0 +(** + * Adds a new chapter. + * This function is NOT part of the public API + * and should ONLY be used by demuxers. + * + * @param s media file handle + * @param id unique ID for this chapter + * @param start chapter start time in time_base units + * @param end chapter end time in time_base units + * @param title chapter title + * + * @return AVChapter or NULL on error + *) +function ff_new_chapter(s: PAVFormatContext; id: cint; time_base: TAVRational; + start, end_: cint64; title: {const} PAnsiChar): PAVChapter; + cdecl; external av__format; +{$IFEND} + +(** + * Sets the pts for a given stream. + * + * @param s stream + * @param pts_wrap_bits number of bits effectively used by the pts + * (used for wrap control, 33 is the value for MPEG) + * @param pts_num numerator to convert to seconds (MPEG: 1) + * @param pts_den denominator to convert to seconds (MPEG: 90000) + *) +procedure av_set_pts_info(s: PAVStream; pts_wrap_bits: cint; +{$IF LIBAVFORMAT_VERSION < 52036000} // < 52.36.0 + pts_num: cint; pts_den: cint); +{$ELSE} + pts_num: cuint; pts_den: cuint); +{$IFEND} + cdecl; external av__format; + +const + AVSEEK_FLAG_BACKWARD = 1; ///< seek backward + AVSEEK_FLAG_BYTE = 2; ///< seeking based on position in bytes + AVSEEK_FLAG_ANY = 4; ///< seek to any frame, even non-keyframes +{$IF LIBAVFORMAT_VERSION >= 52037000} // >= 52.37.0 + AVSEEK_FLAG_FRAME = 8; +{$IFEND} + +function av_find_default_stream_index(s: PAVFormatContext): cint; + cdecl; external av__format; + +(** + * Gets the index for a specific timestamp. + * @param flags if AVSEEK_FLAG_BACKWARD then the returned index will correspond + * to the timestamp which is <= the requested one, if backward + * is 0, then it will be >= + * if AVSEEK_FLAG_ANY seek to any frame, only keyframes otherwise + * @return < 0 if no such timestamp could be found + *) +function av_index_search_timestamp(st: PAVStream; timestamp: cint64; flags: cint): cint; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0 +(** + * Ensures the index uses less memory than the maximum specified in + * AVFormatContext.max_index_size by discarding entries if it grows + * too large. + * This function is not part of the public API and should only be called + * by demuxers. + *) +procedure ff_reduce_index(s: PAVFormatContext; stream_index: cint); + cdecl; external av__format; +{$IFEND} + +(** + * Adds an index entry into a sorted list. Updates the entry if the list + * already contains it. + * + * @param timestamp timestamp in the timebase of the given stream + *) +function av_add_index_entry(st: PAVStream; pos: cint64; timestamp: cint64; + size: cint; distance: cint; flags: cint): cint; + cdecl; external av__format; + +(** + * Does a binary search using av_index_search_timestamp() and + * AVCodec.read_timestamp(). + * This is not supposed to be called directly by a user application, + * but by demuxers. + * @param target_ts target timestamp in the time base of the given stream + * @param stream_index stream number + *) +function av_seek_frame_binary(s: PAVFormatContext; stream_index: cint; + target_ts: cint64; flags: cint): cint; + cdecl; external av__format; + + +(** + * Updates cur_dts of all streams based on the given timestamp and AVStream. + * + * Stream ref_st unchanged, others set cur_dts in their native time base. + * Only needed for timestamp wrapping or if (dts not set and pts!=dts). + * @param timestamp new dts expressed in time_base of param ref_st + * @param ref_st reference stream giving time_base of param timestamp + *) +procedure av_update_cur_dts(s: PAVFormatContext; ref_st: PAVStream; + timestamp: cint64); + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 51007000} // 51.7.0 +type + TReadTimestampFunc = function (pavfc: PAVFormatContext; + arg2: cint; arg3: Pint64; arg4: cint64): cint64; cdecl; + +(** + * Does a binary search using read_timestamp(). + * This is not supposed to be called directly by a user application, + * but by demuxers. + * @param target_ts target timestamp in the time base of the given stream + * @param stream_index stream number + *) +function av_gen_search(s: PAVFormatContext; stream_index: cint; + target_ts: cint64; pos_min: cint64; + pos_max: cint64; pos_limit: cint64; + ts_min: cint64; ts_max: cint64; + flags: cint; ts_ret: Pint64; + read_timestamp: TReadTimestampFunc): cint64; + cdecl; external av__format; +{$IFEND} + +(* media file output *) +function av_set_parameters(s: PAVFormatContext; ap: PAVFormatParameters): cint; + cdecl; external av__format; + +(** + * Allocates the stream private data and writes the stream header to an + * output media file. + * + * @param s media file handle + * @return 0 if OK, AVERROR_xxx on error + *) +function av_write_header(s: PAVFormatContext): cint; + cdecl; external av__format; + +(** + * Writes a packet to an output media file. + * + * The packet shall contain one audio or video frame. + * The packet must be correctly interleaved according to the container + * specification, if not then av_interleaved_write_frame must be used. + * + * @param s media file handle + * @param pkt The packet, which contains the stream_index, buf/buf_size, + * dts/pts, ... + * @return < 0 on error, = 0 if OK, 1 if end of stream wanted + *) +function av_write_frame(s: PAVFormatContext; var pkt: TAVPacket): cint; + cdecl; external av__format; + +(** + * Writes a packet to an output media file ensuring correct interleaving. + * + * The packet must contain one audio or video frame. + * If the packets are already correctly interleaved, the application should + * call av_write_frame() instead as it is slightly faster. It is also important + * to keep in mind that completely non-interleaved input will need huge amounts + * of memory to interleave with this, so it is preferable to interleave at the + * demuxer level. + * + * @param s media file handle + * @param pkt The packet, which contains the stream_index, buf/buf_size, + * dts/pts, ... + * @return < 0 on error, = 0 if OK, 1 if end of stream wanted + *) +function av_interleaved_write_frame(s: PAVFormatContext; var pkt: TAVPacket): cint; + cdecl; external av__format; + +(** + * Interleaves a packet per dts in an output media file. + * + * Packets with pkt->destruct == av_destruct_packet will be freed inside this + * function, so they cannot be used after it. Note that calling av_free_packet() + * on them is still safe. + * + * @param s media file handle + * @param out the interleaved packet will be output here + * @param in the input packet + * @param flush 1 if no further packets are available as input and all + * remaining packets should be output + * @return 1 if a packet was output, 0 if no packet could be output, + * < 0 if an error occurred + *) +function av_interleave_packet_per_dts(s: PAVFormatContext; _out: PAVPacket; + pkt: PAVPacket; flush: cint): cint; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 52025000} // 52.25.0 +(** + * Add packet to AVFormatContext->packet_buffer list, determining its + * interleaved position using compare() function argument. + * + * This function is not part of the public API and should only be called + * by muxers using their own interleave function. + *) +{ +procedure ff_interleave_add_packet(s: PAVFormatContext; + pkt: PAVPacket; + compare: function(para1: PAVFormatContext; + para2: PAVPacket; + para3: PAVPacket): cint); + cdecl; external av__format; +} +{$IFEND} + +(** + * Writes the stream trailer to an output media file and frees the + * file private data. + * + * May only be called after a successful call to av_write_header. + * + * @param s media file handle + * @return 0 if OK, AVERROR_xxx on error + *) +function av_write_trailer(s: pAVFormatContext): cint; + cdecl; external av__format; + +procedure dump_format(ic: PAVFormatContext; index: cint; url: PAnsiChar; + is_output: cint); + cdecl; external av__format; + +(** + * Parses width and height out of string str. + * @deprecated Use av_parse_video_frame_size instead. + *) +function parse_image_size(width_ptr: PCint; height_ptr: PCint; + str: PAnsiChar): cint; + cdecl; external av__format; deprecated; + +{$IF LIBAVFORMAT_VERSION_MAJOR < 53} +(** + * Converts framerate from a string to a fraction. + * @deprecated Use av_parse_video_frame_rate instead. + *) +function parse_frame_rate(frame_rate: PCint; frame_rate_base: PCint; + arg: PByteArray): cint; + cdecl; external av__format; deprecated; +{$IFEND} + +(** + * Parses datestr and returns a corresponding number of microseconds. + * @param datestr String representing a date or a duration. + * - If a date the syntax is: + * @code + * [{YYYY-MM-DD|YYYYMMDD}]{T| }{HH[:MM[:SS[.m...]]][Z]|HH[MM[SS[.m...]]][Z]} + * @endcode + * Time is localtime unless Z is appended, in which case it is + * interpreted as UTC. + * If the year-month-day part is not specified it takes the current + * year-month-day. + * Returns the number of microseconds since 1st of January, 1970 up to + * the time of the parsed date or INT64_MIN if datestr cannot be + * successfully parsed. + * - If a duration the syntax is: + * @code + * [-]HH[:MM[:SS[.m...]]] + * [-]S+[.m...] + * @endcode + * Returns the number of microseconds contained in a time interval + * with the specified duration or INT64_MIN if datestr cannot be + * successfully parsed. + * @param duration Flag which tells how to interpret datestr, if + * not zero datestr is interpreted as a duration, otherwise as a + * date. + *) +function parse_date(datestr: PAnsiChar; duration: cint): cint64; + cdecl; external av__format; + +(** Gets the current time in microseconds. *) +function av_gettime(): cint64; + cdecl; external av__format; + +(* ffm-specific for ffserver *) +const + FFM_PACKET_SIZE = 4096; + +function ffm_read_write_index(fd: cint): cint64; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION < 52027000} // 52.27.0 +procedure ffm_write_write_index(fd: cint; pos: cint64); +{$ELSE} +function ffm_write_write_index(fd: cint; pos: cint64): cint; +{$IFEND} + cdecl; external av__format; + +procedure ffm_set_write_index(s: PAVFormatContext; pos: cint64; file_size: cint64); + cdecl; external av__format; + +(** + * Attempts to find a specific tag in a URL. + * + * syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done. + * Return 1 if found. + *) +function find_info_tag(arg: PAnsiChar; arg_size: cint; tag1: PAnsiChar; info: PAnsiChar): cint; + cdecl; external av__format; + +(** + * Returns in 'buf' the path with '%d' replaced by a number. + * + * Also handles the '%0nd' format where 'n' is the total number + * of digits and '%%'. + * + * @param buf destination buffer + * @param buf_size destination buffer size + * @param path numbered sequence string + * @param number frame number + * @return 0 if OK, -1 on format error + *) +function av_get_frame_filename(buf: PAnsiChar; buf_size: cint; + path: PAnsiChar; number: cint): cint; + cdecl; external av__format + {$IF LIBAVFORMAT_VERSION <= 50006000} // 50.6.0 + name 'get_frame_filename' + {$IFEND}; + +(** + * Checks whether filename actually is a numbered sequence generator. + * + * @param filename possible numbered sequence string + * @return 1 if a valid numbered sequence string, 0 otherwise + *) +function av_filename_number_test(filename: PAnsiChar): cint; + cdecl; external av__format + {$IF LIBAVFORMAT_VERSION <= 50006000} // 50.6.0 + name 'filename_number_test' + {$IFEND}; + +{$IF LIBAVFORMAT_VERSION >= 51012002} // 51.12.2 +(** + * Generates an SDP for an RTP session. + * + * @param ac array of AVFormatContexts describing the RTP streams. If the + * array is composed by only one context, such context can contain + * multiple AVStreams (one AVStream per RTP stream). Otherwise, + * all the contexts in the array (an AVCodecContext per RTP stream) + * must contain only one AVStream. + * @param n_files number of AVCodecContexts contained in ac + * @param buff buffer where the SDP will be stored (must be allocated by + * the caller) + * @param size the size of the buffer + * @return 0 if OK, AVERROR_xxx on error + *) +function avf_sdp_create(ac: PPAVFormatContext; n_files: cint; buff: PByteArray; size: cint): cint; + cdecl; external av__format; +{$IFEND} + +{$IF LIBAVFORMAT_VERSION >= 52060000} // 52.60.0 +(** + * Returns a positive value if the given filename has one of the given + * extensions, 0 otherwise. + * + * @param extensions a comma-separated list of filename extensions + *) +function av_match_ext(filename: {const} Pchar; extensions: {const} Pchar): cint; + cdecl; external av__format; +{$IFEND} + +implementation + +{$IF LIBAVFORMAT_VERSION < 51012002} // 51.12.2 +procedure av_init_packet(var pkt: TAVPacket); +begin + with pkt do begin + pts := AV_NOPTS_VALUE; + dts := AV_NOPTS_VALUE; + pos := -1; + duration := 0; + flags := 0; + stream_index := 0; + destruct := @av_destruct_packet_nofree + end +end; +{$IFEND} + +{$IF LIBAVFORMAT_VERSION < 52032000} // < 52.32.0 +procedure av_free_packet(pkt: PAVPacket); +begin + if ((pkt <> nil) and (@pkt^.destruct <> nil)) then + pkt^.destruct(pkt); +end; +{$IFEND} + +end. diff --git a/VideoPreview/src/lib/ffmpeg/avio.pas b/VideoPreview/src/lib/ffmpeg/avio.pas new file mode 100644 index 00000000..4863ee39 --- /dev/null +++ b/VideoPreview/src/lib/ffmpeg/avio.pas @@ -0,0 +1,731 @@ +(* + * unbuffered io for ffmpeg system + * copyright (c) 2001 Fabrice Bellard + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + *) + +(* + * This is a part of Pascal porting of ffmpeg. + * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows. + * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT + * in the source codes. + * - Changes and updates by the UltraStar Deluxe Team + *) + +(* + * Conversion of libavformat/avio.h + * unbuffered I/O operations + * @warning This file has to be considered an internal but installed + * header, so it should not be directly included in your projects. + * + * update to + * Max. avformat version: 52.62.0, revision 23004, Tue May 11 19:29:00 2010 CET + *) + +unit avio; + +{$IFDEF FPC} + {$MODE DELPHI } + {$PACKENUM 4} (* use 4-byte enums *) + {$PACKRECORDS C} (* C/C++-compatible record packing *) +{$ELSE} + {$MINENUMSIZE 4} (* use 4-byte enums *) +{$ENDIF} + +{$I switches.inc} + +interface + +uses + ctypes, + avutil, + avcodec, + SysUtils, + UConfig; + +(* unbuffered I/O *) + +const + URL_RDONLY = 0; + URL_WRONLY = 1; + URL_RDWR = 2; + + (** + * Passing this as the "whence" parameter to a seek function causes it to + * return the filesize without seeking anywhere. Supporting this is optional. + * If it is not supported then the seek function will return <0. + *) + AVSEEK_SIZE = $10000; + +{$IF LIBAVFORMAT_VERSION >= 52056000} // 52.56.0 + (** + * Oring this flag as into the "whence" parameter to a seek function causes it to + * seek by any means (like reopening and linear reading) or other normally unreasonble + * means that can be extreemly slow. + * This may be ignored by the seek code. + *) + AVSEEK_FORCE = $20000; +{$IFEND} + +type + TURLInterruptCB = function (): cint; cdecl; + +type + PURLProtocol = ^TURLProtocol; + + (** + * URL Context. + * New fields can be added to the end with minor version bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. + * sizeof(URLContext) must not be used outside libav*. + *) + PURLContext = ^TURLContext; + TURLContext = record + {$IF LIBAVFORMAT_VERSION_MAJOR >= 53} + av_class: {const} PAVClass; ///< information for av_log(). Set by url_open(). + {$IFEND} + prot: PURLProtocol; + flags: cint; + is_streamed: cint; (**< true if streamed (no seek possible), default = false *) + max_packet_size: cint; (**< if non zero, the stream is packetized with this max packet size *) + priv_data: pointer; + filename: PAnsiChar; (**< specified URL *) + end; + PPURLContext = ^PURLContext; + + PURLPollEntry = ^TURLPollEntry; + TURLPollEntry = record + handle: PURLContext; + events: cint; + revents: cint; + end; + + TURLProtocol = record + name: PAnsiChar; +{$IF LIBAVFORMAT_VERSION < 52047000} // 52.47.0 + url_open: function (h: PURLContext; filename: {const} PAnsiChar; flags: cint): cint; cdecl; +{$ELSE} + url_open: function (h: PURLContext; url: {const} PAnsiChar; flags: cint): cint; cdecl; +{$IFEND} + +(** + * Reads up to size bytes from the resource accessed by h, and stores + * the read bytes in buf. + * + * @return The number of bytes actually read, or a negative value + * corresponding to an AVERROR code in case of error. A value of zero + * indicates that it is not possible to read more from the accessed + * resource (except if the value of the size argument is also zero). + *) + url_read: function (h: PURLContext; buf: PByteArray; size: cint): cint; cdecl; + +(** + * Read as many bytes as possible (up to size), calling the + * read function multiple times if necessary. + * Will also retry if the read function returns AVERROR(EAGAIN). + * This makes special short-read handling in applications + * unnecessary, if the return value is < size then it is + * certain there was either an error or the end of file was reached. + *) + url_write: function (h: PURLContext; buf: PByteArray; size: cint): cint; cdecl; + +(** + * Changes the position that will be used by the next read/write + * operation on the resource accessed by h. + * + * @param pos specifies the new position to set + * @param whence specifies how pos should be interpreted, it must be + * one of SEEK_SET (seek from the beginning), SEEK_CUR (seek from the + * current position), SEEK_END (seek from the end), or AVSEEK_SIZE + * (return the filesize of the requested resource, pos is ignored). + * @return a negative value corresponding to an AVERROR code in case + * of failure, or the resulting file position, measured in bytes from + * the beginning of the file. You can use this feature together with + * SEEK_CUR to read the current file position. + *) + url_seek: function (h: PURLContext; pos: cint64; whence: cint): cint64; cdecl; + + url_close: function (h: PURLContext): cint; cdecl; + next: PURLProtocol; + {$IF (LIBAVFORMAT_VERSION >= 52001000) and (LIBAVFORMAT_VERSION < 52004000)} // 52.1.0 .. 52.4.0 + url_read_play: function (h: PURLContext): cint; cdecl; + url_read_pause: function (h: PURLContext): cint; cdecl; + {$IFEND} + {$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0 + url_read_pause: function (h: PURLContext; pause: cint): cint; cdecl; + {$IFEND} + {$IF LIBAVFORMAT_VERSION >= 52001000} // 52.1.0 + url_read_seek: function (h: PURLContext; stream_index: cint; + timestamp: cint64; flags: cint): cint64; cdecl; + {$IFEND} + {$IF LIBAVFORMAT_VERSION >= 52031000} // 52.31.0 + url_get_file_handle: function (h: PURLContext): cint; cdecl; + {$IFEND} + end; + + (** + * Bytestream IO Context. + * New fields can be added to the end with minor version bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. + * sizeof(ByteIOContext) must not be used outside libav*. + *) + PByteIOContext = ^TByteIOContext; + TByteIOContext = record + buffer: PByteArray; + buffer_size: cint; + buf_ptr: PByteArray; + buf_end: PByteArray; + opaque: pointer; + read_packet: function (opaque: pointer; buf: PByteArray; buf_size: cint): cint; cdecl; + write_packet: function (opaque: pointer; buf: PByteArray; buf_size: cint): cint; cdecl; + seek: function (opaque: pointer; offset: cint64; whence: cint): cint64; cdecl; + pos: cint64; (* position in the file of the current buffer *) + must_flush: cint; (* true if the next seek should flush *) + eof_reached: cint; (* true if eof reached *) + write_flag: cint; (* true if open for writing *) + is_streamed: cint; + max_packet_size: cint; + checksum: culong; + checksum_ptr: PByteArray; + update_checksum: function (checksum: culong; buf: {const} PByteArray; size: cuint): culong; cdecl; + error: cint; ///< contains the error code or 0 if no error happened + {$IF (LIBAVFORMAT_VERSION >= 52001000) and (LIBAVFORMAT_VERSION < 52004000)} // 52.1.0 .. 52.4.0 + read_play: function(opaque: Pointer): cint; cdecl; + read_pause: function(opaque: Pointer): cint; cdecl; + {$IFEND} + {$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0 + read_pause: function(opaque: Pointer; pause: cint): cint; cdecl; + {$IFEND} + {$IF LIBAVFORMAT_VERSION >= 52001000} // 52.1.0 + read_seek: function(opaque: Pointer; stream_index: cint; + timestamp: cint64; flags: cint): cint64; cdecl; + {$IFEND} + end; + + +{$IF LIBAVFORMAT_VERSION >= 52021000} // 52.21.0 +(** + * Creates an URLContext for accessing to the resource indicated by + * URL, and opens it using the URLProtocol up. + * + * @param puc pointer to the location where, in case of success, the + * function puts the pointer to the created URLContext + * @param flags flags which control how the resource indicated by URL + * is to be opened + * @return 0 in case of success, a negative value corresponding to an + * AVERROR code in case of failure + *) +function url_open_protocol(puc: PPURLContext; up: PURLProtocol; +{$IF LIBAVFORMAT_VERSION < 52047000} // 52.47.0 + filename: {const} PAnsiChar; flags: cint): cint; +{$ELSE} + url: {const} PAnsiChar; flags: cint): cint; +{$IFEND} + cdecl; external av__format; +{$IFEND} + +(** + * Creates an URLContext for accessing to the resource indicated by + * url, and opens it. + * + * @param puc pointer to the location where, in case of success, the + * function puts the pointer to the created URLContext + * @param flags flags which control how the resource indicated by url + * is to be opened + * @return 0 in case of success, a negative value corresponding to an + * AVERROR code in case of failure + *) +{$IF LIBAVFORMAT_VERSION < 52047000} // 52.47.0 +function url_open(h: PPointer; filename: {const} PAnsiChar; flags: cint): cint; +{$ELSE} +function url_open(h: PPointer; url: {const} PAnsiChar; flags: cint): cint; +{$IFEND} + cdecl; external av__format; +function url_read (h: PURLContext; buf: PByteArray; size: cint): cint; + cdecl; external av__format; +{$IF LIBAVFORMAT_VERSION >= 52034000} // 52.34.0 +function url_read_complete (h: PURLContext; buf: PByteArray; size: cint): cint; cdecl; + cdecl; external av__format; +{$IFEND} +function url_write (h: PURLContext; buf: PByteArray; size: cint): cint; + cdecl; external av__format; +function url_seek (h: PURLContext; pos: cint64; whence: cint): cint64; + cdecl; external av__format; + +(** + * Closes the resource accessed by the URLContext h, and frees the + * memory used by it. + * + * @return a negative value if an error condition occurred, 0 + * otherwise + *) +function url_close (h: PURLContext): cint; + cdecl; external av__format; + +(** + * Returns a non-zero value if the resource indicated by url + * exists, 0 otherwise. + *) +{$IF LIBAVFORMAT_VERSION < 52047000} // 52.47.0 +function url_exist(filename: {const} PAnsiChar): cint; +{$ELSE} +function url_exist(url: {const} PAnsiChar): cint; +{$IFEND} + cdecl; external av__format; + +function url_filesize (h: PURLContext): cint64; + cdecl; external av__format; + +(** + * Return the file descriptor associated with this URL. For RTP, this + * will return only the RTP file descriptor, not the RTCP file descriptor. + * To get both, use rtp_get_file_handles(). + * + * @return the file descriptor associated with this URL, or <0 on error. + *) +(* not implemented *) +function url_get_file_handle(h: PURLContext): cint; + cdecl; external av__format; + +(** + * Return the maximum packet size associated to packetized file + * handle. If the file is not packetized (stream like HTTP or file on + * disk), then 0 is returned. + * + * @param h file handle + * @return maximum packet size in bytes + *) +function url_get_max_packet_size(h: PURLContext): cint; + cdecl; external av__format; +procedure url_get_filename(h: PURLContext; buf: PAnsiChar; buf_size: cint); + cdecl; external av__format; + +(** + * The callback is called in blocking functions to test regulary if + * asynchronous interruption is needed. AVERROR(EINTR) is returned + * in this case by the interrupted function. 'NULL' means no interrupt + * callback is given. + *) +procedure url_set_interrupt_cb (interrupt_cb: TURLInterruptCB); + cdecl; external av__format; + +(* not implemented *) +function url_poll(poll_table: PURLPollEntry; n: cint; timeout: cint): cint; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0 +(** + * Pause and resume playing - only meaningful if using a network streaming + * protocol (e.g. MMS). + * @param pause 1 for pause, 0 for resume + *) +function av_url_read_pause(h: PURLContext; pause: cint): cint; + cdecl; external av__format; +{$IFEND} + +{$IF LIBAVFORMAT_VERSION >= 52001000} // 52.1.0 +(** + * Seek to a given timestamp relative to some component stream. + * Only meaningful if using a network streaming protocol (e.g. MMS.). + * @param stream_index The stream index that the timestamp is relative to. + * If stream_index is (-1) the timestamp should be in AV_TIME_BASE + * units from the beginning of the presentation. + * If a stream_index >= 0 is used and the protocol does not support + * seeking based on component streams, the call will fail with ENOTSUP. + * @param timestamp timestamp in AVStream.time_base units + * or if there is no stream specified then in AV_TIME_BASE units. + * @param flags Optional combination of AVSEEK_FLAG_BACKWARD, AVSEEK_FLAG_BYTE + * and AVSEEK_FLAG_ANY. The protocol may silently ignore + * AVSEEK_FLAG_BACKWARD and AVSEEK_FLAG_ANY, but AVSEEK_FLAG_BYTE will + * fail with ENOTSUP if used and not supported. + * @return >= 0 on success + * @see AVInputFormat::read_seek + *) +function av_url_read_seek(h: PURLContext; stream_index: cint; + timestamp: cint64; flags: cint): cint64; + cdecl; external av__format; +{$IFEND} + +(** +var +{$IF LIBAVFORMAT_VERSION_MAJOR < 53} + first_protocol: PURLProtocol; external av__format; +{$IFEND} + url_interrupt_cb: PURLInterruptCB; external av__format; +**) + +{$IF LIBAVFORMAT_VERSION >= 52002000} // 52.2.0 +(** + * If protocol is NULL, returns the first registered protocol, + * if protocol is non-NULL, returns the next registered protocol after protocol, + * or NULL if protocol is the last one. + *) +function av_protocol_next(p: PURLProtocol): PURLProtocol; + cdecl; external av__format; +{$IFEND} + +{$IF LIBAVFORMAT_VERSION <= 52028000} // 52.28.0 +(** + * Registers the URLProtocol protocol. + *) +(** + * @deprecated Use av_register_protocol() instead. + *) +function register_protocol(protocol: PURLProtocol): cint; + cdecl; external av__format; +(** Alias for register_protocol() *) +function av_register_protocol(protocol: PURLProtocol): cint; + cdecl; external av__format name 'register_protocol'; +{$ELSE} +function av_register_protocol(protocol: PURLProtocol): cint; + cdecl; external av__format; +{$IFEND} + +type + TReadWriteFunc = function(opaque: Pointer; buf: PByteArray; buf_size: cint): cint; cdecl; + TSeekFunc = function(opaque: Pointer; offset: cint64; whence: cint): cint64; cdecl; + +function init_put_byte(s: PByteIOContext; + buffer: PByteArray; + buffer_size: cint; write_flag: cint; + opaque: pointer; + read_packet: TReadWriteFunc; + write_packet: TReadWriteFunc; + seek: TSeekFunc): cint; + cdecl; external av__format; +{$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0 +function av_alloc_put_byte( + buffer: PByteArray; + buffer_size: cint; + write_flag: cint; + opaque: Pointer; + read_packet: TReadWriteFunc; + write_packet: TReadWriteFunc; + seek: TSeekFunc): PByteIOContext; + cdecl; external av__format; +{$IFEND} + +procedure put_byte(s: PByteIOContext; b: cint); + cdecl; external av__format; +procedure put_buffer (s: PByteIOContext; buf: {const} PByteArray; size: cint); + cdecl; external av__format; +procedure put_le64(s: PByteIOContext; val: cuint64); + cdecl; external av__format; +procedure put_be64(s: PByteIOContext; val: cuint64); + cdecl; external av__format; +procedure put_le32(s: PByteIOContext; val: cuint); + cdecl; external av__format; +procedure put_be32(s: PByteIOContext; val: cuint); + cdecl; external av__format; +procedure put_le24(s: PByteIOContext; val: cuint); + cdecl; external av__format; +procedure put_be24(s: PByteIOContext; val: cuint); + cdecl; external av__format; +procedure put_le16(s: PByteIOContext; val: cuint); + cdecl; external av__format; +procedure put_be16(s: PByteIOContext; val: cuint); + cdecl; external av__format; +procedure put_tag(s: PByteIOContext; tag: {const} PAnsiChar); + cdecl; external av__format; + +procedure put_strz(s: PByteIOContext; buf: {const} PAnsiChar); + cdecl; external av__format; + +(** + * fseek() equivalent for ByteIOContext. + * @return new position or AVERROR. + *) +function url_fseek(s: PByteIOContext; offset: cint64; whence: cint): cint64; + cdecl; external av__format; + +(** + * Skip given number of bytes forward. + * @param offset number of bytes + *) +procedure url_fskip(s: PByteIOContext; offset: cint64); + cdecl; external av__format; + +(** + * ftell() equivalent for ByteIOContext. + * @return position or AVERROR. + *) +function url_ftell(s: PByteIOContext): cint64; + cdecl; external av__format; + +(** + * Gets the filesize. + * @return filesize or AVERROR + *) +function url_fsize(s: PByteIOContext): cint64; + cdecl; external av__format; + +(** + * feof() equivalent for ByteIOContext. + * @return non zero if and only if end of file + *) +function url_feof(s: PByteIOContext): cint; + cdecl; external av__format; + +function url_ferror(s: PByteIOContext): cint; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0 +function av_url_read_fpause(h: PByteIOContext; pause: cint): cint; + cdecl; external av__format; +{$IFEND} +{$IF LIBAVFORMAT_VERSION >= 52001000} // 52.1.0 +function av_url_read_fseek(h: PByteIOContext; stream_index: cint; + timestamp: cint64; flags: cint): cint64; + cdecl; external av__format; +{$IFEND} + +const + URL_EOF = -1; +(** @note return URL_EOF (-1) if EOF *) +function url_fgetc(s: PByteIOContext): cint; + cdecl; external av__format; + +(** @warning currently size is limited *) +function url_fprintf(s: PByteIOContext; fmt: {const} PAnsiChar; args: array of const): cint; + cdecl; external av__format; + +(** @note unlike fgets, the EOL character is not returned and a whole + line is parsed. return NULL if first char read was EOF *) +function url_fgets(s: PByteIOContext; buf: PAnsiChar; buf_size: cint): PAnsiChar; + cdecl; external av__format; + +procedure put_flush_packet (s: PByteIOContext); + cdecl; external av__format; + +(** + * Reads size bytes from ByteIOContext into buf. + * @return number of bytes read or AVERROR + *) +function get_buffer(s: PByteIOContext; buf: PByteArray; size: cint): cint; + cdecl; external av__format; + +(** + * Reads size bytes from ByteIOContext into buf. + * This reads at most 1 packet. If that is not enough fewer bytes will be + * returned. + * @return number of bytes read or AVERROR + *) +function get_partial_buffer(s: PByteIOContext; buf: PByteArray; size: cint): cint; + cdecl; external av__format; + +(** @note return 0 if EOF, so you cannot use it if EOF handling is + necessary *) +function get_byte(s: PByteIOContext): cint; + cdecl; external av__format; +function get_le24(s: PByteIOContext): cuint; + cdecl; external av__format; +function get_le32(s: PByteIOContext): cuint; + cdecl; external av__format; +function get_le64(s: PByteIOContext): cuint64; + cdecl; external av__format; +function get_le16(s: PByteIOContext): cuint; + cdecl; external av__format; + +function get_strz(s: PByteIOContext; buf: PAnsiChar; maxlen: cint): PAnsiChar; + cdecl; external av__format; +function get_be16(s: PByteIOContext): cuint; + cdecl; external av__format; +function get_be24(s: PByteIOContext): cuint; + cdecl; external av__format; +function get_be32(s: PByteIOContext): cuint; + cdecl; external av__format; +function get_be64(s: PByteIOContext): cuint64; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 51017001} // 51.17.1 +function ff_get_v(bc: PByteIOContext): cuint64; + cdecl; external av__format; +{$IFEND} + +function url_is_streamed(s: PByteIOContext): cint; {$IFDEF HasInline}inline;{$ENDIF} + +(** + * Creates and initializes a ByteIOContext for accessing the + * resource referenced by the URLContext h. + * @note When the URLContext h has been opened in read+write mode, the + * ByteIOContext can be used only for writing. + * + * @param s Used to return the pointer to the created ByteIOContext. + * In case of failure the pointed to value is set to NULL. + * @return 0 in case of success, a negative value corresponding to an + * AVERROR code in case of failure + *) +{$IF LIBAVFORMAT_VERSION >= 52000000} // 52.0.0 +function url_fdopen (var s: PByteIOContext; h: PURLContext): cint; +{$ELSE} +function url_fdopen (s: PByteIOContext; h: PURLContext): cint; +{$IFEND} + cdecl; external av__format; + +(** @warning must be called before any I/O *) +function url_setbufsize (s: PByteIOContext; buf_size: cint): cint; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION_MAJOR < 53} +{$IF LIBAVFORMAT_VERSION >= 51015000} // 51.15.0 +(** Reset the buffer for reading or writing. + * @note Will drop any data currently in the buffer without transmitting it. + * @param flags URL_RDONLY to set up the buffer for reading, or URL_WRONLY + * to set up the buffer for writing. *) +function url_resetbuf(s: PByteIOContext; flags: cint): cint; + cdecl; external av__format; +{$IFEND} +{$IFEND} + +{$IF LIBAVFORMAT_VERSION >= 52061000} // 52.61.0 +(** + * Rewinds the ByteIOContext using the specified buffer containing the first buf_size bytes of the file. + * Used after probing to avoid seeking. + * Joins buf and s->buffer, taking any overlap into consideration. + * @note s->buffer must overlap with buf or they can't be joined and the function fails + * @note This function is NOT part of the public API + * + * @param s The read-only ByteIOContext to rewind + * @param buf The probe buffer containing the first buf_size bytes of the file + * @param buf_size The size of buf + * @return 0 in case of success, a negative value corresponding to an + * AVERROR code in case of failure + *) +function ff_rewind_with_probe_data(s: PByteIOContext; buf: PAnsiChar; buf_size: cint): cint; + cdecl; external av__format; +{$IFEND} + +(** + * Creates and initializes a ByteIOContext for accessing the + * resource indicated by url. + * @note When the resource indicated by url has been opened in + * read+write mode, the ByteIOContext can be used only for writing. + * + * @param s Used to return the pointer to the created ByteIOContext. + * In case of failure the pointed to value is set to NULL. + * @param flags flags which control how the resource indicated by url + * is to be opened + * @return 0 in case of success, a negative value corresponding to an + * AVERROR code in case of failure + *) +{$IF LIBAVFORMAT_VERSION < 52047000} // 52.47.0 +{$IF LIBAVFORMAT_VERSION >= 52000000} // 52.0.0 +function url_fopen(var s: PByteIOContext; filename: {const} PAnsiChar; flags: cint): cint; +{$ELSE} +function url_fopen(s: PByteIOContext; filename: {const} PAnsiChar; flags: cint): cint; +{$IFEND} +{$ELSE} +function url_fopen(var s: PByteIOContext; url: {const} PAnsiChar; flags: cint): cint; +{$IFEND} + cdecl; external av__format; +function url_fclose(s: PByteIOContext): cint; + cdecl; external av__format; +function url_fileno(s: PByteIOContext): PURLContext; + cdecl; external av__format; + +(** + * Return the maximum packet size associated to packetized buffered file + * handle. If the file is not packetized (stream like http or file on + * disk), then 0 is returned. + * + * @param s buffered file handle + * @return maximum packet size in bytes + *) +function url_fget_max_packet_size (s: PByteIOContext): cint; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 52000000} // 52.0.0 +function url_open_buf(var s: PByteIOContext; buf: PAnsiChar; buf_size: cint; flags: cint): cint; +{$ELSE} +function url_open_buf(s: PByteIOContext; buf: PAnsiChar; buf_size: cint; flags: cint): cint; +{$IFEND} + cdecl; external av__format; + +(** return the written or read size *) +function url_close_buf(s: PByteIOContext): cint; + cdecl; external av__format; + +(** + * Open a write only memory stream. + * + * @param s new IO context + * @return zero if no error. + *) +{$IF LIBAVFORMAT_VERSION >= 52000000} // 52.0.0 +function url_open_dyn_buf(var s: PByteIOContext): cint; +{$ELSE} +function url_open_dyn_buf(s: PByteIOContext): cint; +{$IFEND} + cdecl; external av__format; + +(** + * Open a write only packetized memory stream with a maximum packet + * size of 'max_packet_size'. The stream is stored in a memory buffer + * with a big endian 4 byte header giving the packet size in bytes. + * + * @param s new IO context + * @param max_packet_size maximum packet size (must be > 0) + * @return zero if no error. + *) +{$IF LIBAVFORMAT_VERSION >= 52000000} // 52.0.0 +function url_open_dyn_packet_buf(var s: PByteIOContext; max_packet_size: cint): cint; +{$ELSE} +function url_open_dyn_packet_buf(s: PByteIOContext; max_packet_size: cint): cint; +{$IFEND} + cdecl; external av__format; + +(** + * Return the written size and a pointer to the buffer. The buffer + * must be freed with av_free(). + * @param s IO context + * @param pbuffer pointer to a byte buffer + * @return the length of the byte buffer + *) +function url_close_dyn_buf(s: PByteIOContext; pbuffer:PPointer): cint; + cdecl; external av__format; + +{$IF LIBAVFORMAT_VERSION >= 51017001} // 51.17.1 +function ff_crc04C11DB7_update(checksum: culong; buf: {const} PByteArray; + len: cuint): culong; + cdecl; external av__format; +{$IFEND} +function get_checksum(s: PByteIOContext): culong; + cdecl; external av__format; +procedure init_gsum(s: PByteIOContext; + update_checksum: pointer; + checksum: culong); + cdecl; external av__format; + +(* udp.c *) +function udp_set_remote_url(h: PURLContext; uri: {const} PAnsiChar): cint; + cdecl; external av__format; +function udp_get_local_port(h: PURLContext): cint; + cdecl; external av__format; +{$IF LIBAVFORMAT_VERSION_MAJOR <= 52} +function udp_get_file_handle(h: PURLContext): cint; + cdecl; external av__format; +{$IFEND} + +implementation + +function url_is_streamed(s: PByteIOContext): cint; +begin + Result := s^.is_streamed; +end; + +end. diff --git a/VideoPreview/src/lib/ffmpeg/avutil.pas b/VideoPreview/src/lib/ffmpeg/avutil.pas new file mode 100644 index 00000000..c26700c6 --- /dev/null +++ b/VideoPreview/src/lib/ffmpeg/avutil.pas @@ -0,0 +1,504 @@ +(* + * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + *) + +(* + * This is a part of Pascal porting of ffmpeg. + * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows. + * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT + * in the source codes. + * - Changes and updates by the UltraStar Deluxe Team + *) + +(* + * Conversions of + * + * libavutil/avutil.h: + * Min. version: 49.0.1, revision 6577, Sat Oct 7 15:30:46 2006 UTC + * Max. version: 50.15.2, revision 23059, Tue May 11 22:05:00 2010 CET + * + * libavutil/mem.h: + * revision 16590, Tue Jan 13 23:44:16 2009 UTC + * + * libavutil/log.h: + * revision 16571, Tue Jan 13 00:14:43 2009 UTC + * + * include/keep pixfmt.h (change in revision 50.01.0) + * Maybe, the pixelformats are not needed, but it has not been checked. + * log.h is only partial. + * + *) + +unit avutil; + +{$IFDEF FPC} + {$MODE DELPHI} + {$PACKENUM 4} (* use 4-byte enums *) + {$PACKRECORDS C} (* C/C++-compatible record packing *) +{$ELSE} + {$MINENUMSIZE 4} (* use 4-byte enums *) +{$ENDIF} + +{$IFDEF DARWIN} + {$linklib libavutil} +{$ENDIF} + +interface + +uses + ctypes, + mathematics, + rational, + {$IFDEF UNIX} + BaseUnix, + {$ENDIF} + UConfig; + +const + (* + * IMPORTANT: The official FFmpeg C headers change very quickly. Often some + * of the data structures are changed so that they become incompatible with + * older header files. The Pascal headers have to be adjusted to those changes, + * otherwise the application might crash randomly or strange bugs (not + * necessarily related to video or audio due to buffer overflows etc.) might + * occur. + * + * In the past users reported problems with USDX that took hours to fix and + * the problem was an unsupported version of FFmpeg. So we decided to disable + * support for future versions of FFmpeg until the headers are revised by us + * for that version as they otherwise most probably will break USDX. + * + * If the headers do not yet support your FFmpeg version you may want to + * adjust the max. version numbers manually but please note: it may work but + * in many cases it does not. The USDX team does NOT PROVIDE ANY SUPPORT + * for the game if the MAX. VERSION WAS CHANGED. + * + * The only safe way to support new versions of FFmpeg is to add the changes + * of the FFmpeg git repository C headers to the Pascal headers. + * You can accelerate this process by posting a patch with the git changes + * translated to Pascal to our bug tracker (please join our IRC chat before + * you start working on it). Simply adjusting the max. versions is NOT a valid + * fix. + *) + (* Max. supported version by this header *) + LIBAVUTIL_MAX_VERSION_MAJOR = 50; + LIBAVUTIL_MAX_VERSION_MINOR = 15; + LIBAVUTIL_MAX_VERSION_RELEASE = 2; + LIBAVUTIL_MAX_VERSION = (LIBAVUTIL_MAX_VERSION_MAJOR * VERSION_MAJOR) + + (LIBAVUTIL_MAX_VERSION_MINOR * VERSION_MINOR) + + (LIBAVUTIL_MAX_VERSION_RELEASE * VERSION_RELEASE); + + (* Min. supported version by this header *) + LIBAVUTIL_MIN_VERSION_MAJOR = 49; + LIBAVUTIL_MIN_VERSION_MINOR = 0; + LIBAVUTIL_MIN_VERSION_RELEASE = 1; + LIBAVUTIL_MIN_VERSION = (LIBAVUTIL_MIN_VERSION_MAJOR * VERSION_MAJOR) + + (LIBAVUTIL_MIN_VERSION_MINOR * VERSION_MINOR) + + (LIBAVUTIL_MIN_VERSION_RELEASE * VERSION_RELEASE); + +(* Check if linked versions are supported *) +{$IF (LIBAVUTIL_VERSION < LIBAVUTIL_MIN_VERSION)} + {$MESSAGE Error 'Linked version of libavutil is too old!'} +{$IFEND} + +{$IF (LIBAVUTIL_VERSION > LIBAVUTIL_MAX_VERSION)} + {$MESSAGE Error 'Linked version of libavutil is not yet supported!'} +{$IFEND} + +{$IF LIBAVUTIL_VERSION >= 49008000} // 49.8.0 +(** + * Returns the LIBAVUTIL_VERSION_INT constant. + *) +function avutil_version(): cuint; + cdecl; external av__format; +{$IFEND} + +{$IF LIBAVUTIL_VERSION >= 50004000} // >= 50.4.0 +(** + * Returns the libavutil build-time configuration. + *) +function avutil_configuration(): PAnsiChar; + cdecl; external av__format; + +(** + * Returns the libavutil license. + *) +function avutil_license(): PAnsiChar; + cdecl; external av__format; +{$IFEND} + +{ + TAVMediaType moved to avutil in LIBAVUTIL_VERSION 50.14.0 + but moving it in the pascal headers was not really necessary + but caused problems. So, I (KMS) left it there. + +type + TAVMediaType = ( + AVMEDIA_TYPE_UNKNOWN = -1, + AVMEDIA_TYPE_VIDEO, + AVMEDIA_TYPE_AUDIO, + AVMEDIA_TYPE_DATA, + AVMEDIA_TYPE_SUBTITLE, + AVMEDIA_TYPE_ATTACHMENT, + AVMEDIA_TYPE_NB + ); +} + +{$INCLUDE error.pas} + +(* libavutil/pixfmt.h up to revision 23144, May 16 2010 *) + +type +(** + * Pixel format. Notes: + * + * PIX_FMT_RGB32 is handled in an endian-specific manner. An RGBA + * color is put together as: + * (A << 24) | (R << 16) | (G << 8) | B + * This is stored as BGRA on little-endian CPU architectures and ARGB on + * big-endian CPUs. + * + * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized + * image data is stored in AVFrame.data[0]. The palette is transported in + * AVFrame.data[1], is 1024 bytes long (256 4-byte entries) and is + * formatted the same as in PIX_FMT_RGB32 described above (i.e., it is + * also endian-specific). Note also that the individual RGB palette + * components stored in AVFrame.data[1] should be in the range 0..255. + * This is important as many custom PAL8 video codecs that were designed + * to run on the IBM VGA graphics adapter use 6-bit palette components. + * + * For all the 8bit per pixel formats, an RGB32 palette is in data[1] like + * for pal8. This palette is filled in automatically by the function + * allocating the picture. + * + * Note, make sure that all newly added big endian formats have pix_fmt&1==1 + * and that all newly added little endian formats have pix_fmt&1==0 + * this allows simpler detection of big vs little endian. + *) + + PAVPixelFormat = ^TAVPixelFormat; + TAVPixelFormat = ( + PIX_FMT_NONE= -1, + PIX_FMT_YUV420P, ///< planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples) + PIX_FMT_YUYV422, ///< packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr + PIX_FMT_RGB24, ///< packed RGB 8:8:8, 24bpp, RGBRGB... + PIX_FMT_BGR24, ///< packed RGB 8:8:8, 24bpp, BGRBGR... + PIX_FMT_YUV422P, ///< planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples) + PIX_FMT_YUV444P, ///< planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples) +{$IF LIBAVUTIL_VERSION <= 50001000} // 50.01.0 + PIX_FMT_RGB32, ///< packed RGB 8:8:8, 32bpp, (msb)8A 8R 8G 8B(lsb), in CPU endianness +{$IFEND} + PIX_FMT_YUV410P, ///< planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples) + PIX_FMT_YUV411P, ///< planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) +{$IF LIBAVUTIL_VERSION <= 50000000} // 50.00.0 + PIX_FMT_RGB565, ///< packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), in CPU endianness + PIX_FMT_RGB555, ///< packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), in CPU endianness, most significant bit to 0 +{$IFEND} + PIX_FMT_GRAY8, ///< Y , 8bpp + PIX_FMT_MONOWHITE, ///< Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb + PIX_FMT_MONOBLACK, ///< Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb + PIX_FMT_PAL8, ///< 8 bit with PIX_FMT_RGB32 palette + PIX_FMT_YUVJ420P, ///< planar YUV 4:2:0, 12bpp, full scale (JPEG) + PIX_FMT_YUVJ422P, ///< planar YUV 4:2:2, 16bpp, full scale (JPEG) + PIX_FMT_YUVJ444P, ///< planar YUV 4:4:4, 24bpp, full scale (JPEG) + PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing + PIX_FMT_XVMC_MPEG2_IDCT, + PIX_FMT_UYVY422, ///< packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1 + PIX_FMT_UYYVYY411, ///< packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3 +{$IF LIBAVUTIL_VERSION <= 50001000} // 50.01.0 + PIX_FMT_BGR32, ///< packed RGB 8:8:8, 32bpp, (msb)8A 8B 8G 8R(lsb), in CPU endianness +{$IFEND} +{$IF LIBAVUTIL_VERSION <= 50000000} // 50.00.0 + PIX_FMT_BGR565, ///< packed RGB 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), in CPU endianness + PIX_FMT_BGR555, ///< packed RGB 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), in CPU endianness, most significant bit to 1 +{$IFEND} + PIX_FMT_BGR8, ///< packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb) + PIX_FMT_BGR4, ///< packed RGB 1:2:1, bitstream, 4bpp, (msb)1B 2G 1R(lsb), a byte contains two pixels, the first pixel in the byte is the one composed by the 4 msb bits + PIX_FMT_BGR4_BYTE, ///< packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb) + PIX_FMT_RGB8, ///< packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb) + PIX_FMT_RGB4, ///< packed RGB 1:2:1, bitstream, 4bpp, (msb)1R 2G 1B(lsb), a byte contains two pixels, the first pixel in the byte is the one composed by the 4 msb bits + PIX_FMT_RGB4_BYTE, ///< packed RGB 1:2:1, 8bpp, (msb)1R 2G 1B(lsb) + PIX_FMT_NV12, ///< planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (first byte U and the following byte V) + PIX_FMT_NV21, ///< as above, but U and V bytes are swapped +{$IF LIBAVUTIL_VERSION <= 50001000} // 50.01.0 + PIX_FMT_RGB32_1, ///< packed RGB 8:8:8, 32bpp, (msb)8R 8G 8B 8A(lsb), in CPU endianness + PIX_FMT_BGR32_1, ///< packed RGB 8:8:8, 32bpp, (msb)8B 8G 8R 8A(lsb), in CPU endianness +{$ELSE} // 50.02.0 + PIX_FMT_ARGB, ///< packed ARGB 8:8:8:8, 32bpp, ARGBARGB... + PIX_FMT_RGBA, ///< packed RGBA 8:8:8:8, 32bpp, RGBARGBA... + PIX_FMT_ABGR, ///< packed ABGR 8:8:8:8, 32bpp, ABGRABGR... + PIX_FMT_BGRA, ///< packed BGRA 8:8:8:8, 32bpp, BGRABGRA... +{$IFEND} + PIX_FMT_GRAY16BE, ///< Y , 16bpp, big-endian + PIX_FMT_GRAY16LE, ///< Y , 16bpp, little-endian + PIX_FMT_YUV440P, ///< planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples) + PIX_FMT_YUVJ440P, ///< planar YUV 4:4:0 full scale (JPEG) + PIX_FMT_YUVA420P, ///< planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples) + PIX_FMT_VDPAU_H264,///< H.264 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers + PIX_FMT_VDPAU_MPEG1,///< MPEG-1 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers + PIX_FMT_VDPAU_MPEG2,///< MPEG-2 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers + PIX_FMT_VDPAU_WMV3,///< WMV3 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers + PIX_FMT_VDPAU_VC1, ///< VC-1 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers +{$IF LIBAVUTIL_VERSION >= 49015000} // 49.15.0 + PIX_FMT_RGB48BE, ///< packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as big-endian + PIX_FMT_RGB48LE, ///< packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as little-endian +{$IFEND} +{$IF LIBAVUTIL_VERSION >= 50001000} // 50.01.0 + PIX_FMT_RGB565BE, ///< packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), big-endian + PIX_FMT_RGB565LE, ///< packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian + PIX_FMT_RGB555BE, ///< packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), big-endian, most significant bit to 0 + PIX_FMT_RGB555LE, ///< packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), little-endian, most significant bit to 0 + + PIX_FMT_BGR565BE, ///< packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), big-endian + PIX_FMT_BGR565LE, ///< packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), little-endian + PIX_FMT_BGR555BE, ///< packed BGR 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), big-endian, most significant bit to 1 + PIX_FMT_BGR555LE, ///< packed BGR 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), little-endian, most significant bit to 1 + + PIX_FMT_VAAPI_MOCO, ///< HW acceleration through VA API at motion compensation entry-point, Picture.data[3] contains a vaapi_render_state struct which contains macroblocks as well as various fields extracted from headers + PIX_FMT_VAAPI_IDCT, ///< HW acceleration through VA API at IDCT entry-point, Picture.data[3] contains a vaapi_render_state struct which contains fields extracted from headers + PIX_FMT_VAAPI_VLD, ///< HW decoding through VA API, Picture.data[3] contains a vaapi_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers +{$IFEND} + PIX_FMT_NB ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions + ); + +const +{$ifdef WORDS_BIGENDIAN} + {$IF LIBAVUTIL_VERSION <= 50001000} // 50.01.0 + PIX_FMT_RGBA = PIX_FMT_RGB32_1; + PIX_FMT_BGRA = PIX_FMT_BGR32_1; + PIX_FMT_ARGB = PIX_FMT_RGB32; + PIX_FMT_ABGR = PIX_FMT_BGR32; + {$ELSE} // 50.02.0 + PIX_FMT_RGB32 = PIX_FMT_ARGB; + PIX_FMT_RGB32_1 = PIX_FMT_RGBA; + PIX_FMT_BGR32 = PIX_FMT_ABGR; + PIX_FMT_BGR32_1 = PIX_FMT_BGRA; + {$IFEND} + PIX_FMT_GRAY16 = PIX_FMT_GRAY16BE; + {$IF LIBAVUTIL_VERSION >= 49015000} // 49.15.0 + PIX_FMT_RGB48 = PIX_FMT_RGB48BE; + {$IFEND} + {$IF LIBAVUTIL_VERSION >= 50001000} // 50.01.0 + PIX_FMT_RGB565 = PIX_FMT_RGB565BE; + PIX_FMT_RGB555 = PIX_FMT_RGB555BE; + PIX_FMT_BGR565 = PIX_FMT_BGR565BE; + PIX_FMT_BGR555 = PIX_FMT_BGR555BE + {$IFEND} +{$else} + {$IF LIBAVUTIL_VERSION <= 50001000} // 50.01.0 + PIX_FMT_RGBA = PIX_FMT_BGR32; + PIX_FMT_BGRA = PIX_FMT_RGB32; + PIX_FMT_ARGB = PIX_FMT_BGR32_1; + PIX_FMT_ABGR = PIX_FMT_RGB32_1; + {$ELSE} // 50.02.0 + PIX_FMT_RGB32 = PIX_FMT_BGRA; + PIX_FMT_RGB32_1 = PIX_FMT_ABGR; + PIX_FMT_BGR32 = PIX_FMT_RGBA; + PIX_FMT_BGR32_1 = PIX_FMT_ARGB; + {$IFEND} + PIX_FMT_GRAY16 = PIX_FMT_GRAY16LE; + {$IF LIBAVUTIL_VERSION >= 49015000} // 49.15.0 + PIX_FMT_RGB48 = PIX_FMT_RGB48LE; + {$IFEND} + {$IF LIBAVUTIL_VERSION >= 50001000} // 50.01.0 + PIX_FMT_RGB565 = PIX_FMT_RGB565LE; + PIX_FMT_RGB555 = PIX_FMT_RGB555LE; + PIX_FMT_BGR565 = PIX_FMT_BGR565LE; + PIX_FMT_BGR555 = PIX_FMT_BGR555LE; + {$IFEND} +{$ENDIF} + +{$IF LIBAVUTIL_VERSION_MAJOR < 50} // 50.0.0 + PIX_FMT_UYVY411 = PIX_FMT_UYYVYY411; + PIX_FMT_RGBA32 = PIX_FMT_RGB32; + PIX_FMT_YUV422 = PIX_FMT_YUYV422; +{$IFEND} + +(* libavutil/common.h *) // until now MKTAG and MKBETAG is all from common.h KMS 19/5/2010 + +function MKTAG(a, b, c, d: AnsiChar): integer; +function MKBETAG(a, b, c, d: AnsiChar): integer; + +(* libavutil/mem.h *) + +(* memory handling functions *) + +(** + * Allocates a block of size bytes with alignment suitable for all + * memory accesses (including vectors if available on the CPU). + * @param size Size in bytes for the memory block to be allocated. + * @return Pointer to the allocated block, NULL if the block cannot + * be allocated. + * @see av_mallocz() + *) +function av_malloc(size: cuint): pointer; + cdecl; external av__util; {av_malloc_attrib av_alloc_size(1)} + +(** + * Allocates or reallocates a block of memory. + * If ptr is NULL and size > 0, allocates a new block. If + * size is zero, frees the memory block pointed to by ptr. + * @param size Size in bytes for the memory block to be allocated or + * reallocated. + * @param ptr Pointer to a memory block already allocated with + * av_malloc(z)() or av_realloc() or NULL. + * @return Pointer to a newly reallocated block or NULL if the block + * cannot be allocated or the function is used to free the memory block. + * @see av_fast_realloc() + *) +function av_realloc(ptr: pointer; size: cuint): pointer; + cdecl; external av__util; {av_alloc_size(2)} + +(** + * Frees a memory block which has been allocated with av_malloc(z)() or + * av_realloc(). + * @param ptr Pointer to the memory block which should be freed. + * @note ptr = NULL is explicitly allowed. + * @note It is recommended that you use av_freep() instead. + * @see av_freep() + *) +procedure av_free(ptr: pointer); + cdecl; external av__util; + +(** + * Allocates a block of size bytes with alignment suitable for all + * memory accesses (including vectors if available on the CPU) and + * zeroes all the bytes of the block. + * @param size Size in bytes for the memory block to be allocated. + * @return Pointer to the allocated block, NULL if it cannot be allocated. + * @see av_malloc() + *) +function av_mallocz(size: cuint): pointer; + cdecl; external av__util; {av_malloc_attrib av_alloc_size(1)} + +(** + * Duplicates the string s. + * @param s string to be duplicated. + * @return Pointer to a newly allocated string containing a + * copy of s or NULL if the string cannot be allocated. + *) +function av_strdup({const} s: PAnsiChar): PAnsiChar; + cdecl; external av__util; {av_malloc_attrib} + +(** + * Frees a memory block which has been allocated with av_malloc(z)() or + * av_realloc() and set the pointer pointing to it to NULL. + * @param ptr Pointer to the pointer to the memory block which should + * be freed. + * @see av_free() + *) +procedure av_freep (ptr: pointer); + cdecl; external av__util; + +(* libavutil/log.h *) + +const +{$IF LIBAVUTIL_VERSION_MAJOR < 50} + AV_LOG_QUIET = -1; + AV_LOG_FATAL = 0; + AV_LOG_ERROR = 0; + AV_LOG_WARNING = 1; + AV_LOG_INFO = 1; + AV_LOG_VERBOSE = 1; + AV_LOG_DEBUG = 2; +{$ELSE} + AV_LOG_QUIET = -8; + +(** + * Something went really wrong and we will crash now. + *) + AV_LOG_PANIC = 0; + +(** + * Something went wrong and recovery is not possible. + * For example, no header was found for a format which depends + * on headers or an illegal combination of parameters is used. + *) + AV_LOG_FATAL = 8; + +(** + * Something went wrong and cannot losslessly be recovered. + * However, not all future data is affected. + *) + AV_LOG_ERROR = 16; + +(** + * Something somehow does not look correct. This may or may not + * lead to problems. An example would be the use of '-vstrict -2'. + *) + AV_LOG_WARNING = 24; + + AV_LOG_INFO = 32; + AV_LOG_VERBOSE = 40; + +(** + * Stuff which is only useful for libav* developers. + *) + AV_LOG_DEBUG = 48; +{$IFEND} + +(** + * Sends the specified message to the log if the level is less than or equal + * to the current av_log_level. By default, all logging messages are sent to + * stderr. This behavior can be altered by setting a different av_vlog callback + * function. + * + * @param avcl A pointer to an arbitrary struct of which the first field is a + * pointer to an AVClass struct. + * @param level The importance level of the message, lower values signifying + * higher importance. + * @param fmt The format string (printf-compatible) that specifies how + * subsequent arguments are converted to output. + * @see av_vlog + *) + +{** to be translated if needed +#ifdef __GNUC__ +void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4))); +#else +void av_log(void*, int level, const char *fmt, ...); +#endif + +void av_vlog(void*, int level, const char *fmt, va_list); +**} + +function av_log_get_level(): cint; + cdecl; external av__util; +procedure av_log_set_level(level: cint); + cdecl; external av__util; + +{** to be translated if needed +void av_log_set_callback(void (*)(void*, int, const char*, va_list)); +void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl); +**} + +implementation + +(* libavutil/common.h *) + +function MKTAG(a, b, c, d: AnsiChar): integer; +begin + Result := (ord(a) or (ord(b) shl 8) or (ord(c) shl 16) or (ord(d) shl 24)); +end; + +function MKBETAG(a, b, c, d: AnsiChar): integer; +begin + Result := (ord(d) or (ord(c) shl 8) or (ord(b) shl 16) or (ord(a) shl 24)); +end; + + +end. diff --git a/VideoPreview/src/lib/ffmpeg/error.pas b/VideoPreview/src/lib/ffmpeg/error.pas new file mode 100644 index 00000000..95cecd0f --- /dev/null +++ b/VideoPreview/src/lib/ffmpeg/error.pas @@ -0,0 +1,113 @@ +(* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * This is a part of the Pascal port of ffmpeg. + * - Changes and updates by the UltraStar Deluxe Team + * + * Conversion of libavutil/error.h + * Max. avutil version: 50.15.2, revision 23059, Tue May 11 18:30 2010 CET + * + *) + +{$IF LIBAVUTIL_VERSION >= 50012000} // >= 50.12.0 + +{* error handling *} + +const +{$IFDEF UNIX} + ENOENT = ESysENOENT; + EIO = ESysEIO; + ENOMEM = ESysENOMEM; + EINVAL = ESysEINVAL; + EDOM = ESysEDOM; + ENOSYS = ESysENOSYS; + EILSEQ = ESysEILSEQ; + EPIPE = ESysEPIPE; +{$ELSE} + ENOENT = 2; + EIO = 5; + ENOMEM = 12; + EINVAL = 22; + EPIPE = 32; // just an assumption. needs to be checked. + EDOM = 33; + {$IFDEF MSWINDOWS} + // Note: we assume that ffmpeg was compiled with MinGW. + // This must be changed if DLLs were compiled with cygwin. + ENOSYS = 40; // MSVC/MINGW: 40, CYGWIN: 88, LINUX/FPC: 38 + EILSEQ = 42; // MSVC/MINGW: 42, CYGWIN: 138, LINUX/FPC: 84 + {$ENDIF} +{$ENDIF} + +(** + * We need the sign of the error, because some platforms have + * E* and errno already negated. The previous version failed + * with Delphi, because it needed EINVAL defined. + * Warning: This code is platform dependent and assumes constants + * to be 32 bit. + * This version does the following steps: + * 1) shr 30: shifts the sign bit to bit position 2 + * 2) and $00000002: sets all other bits to zero + * positive EINVAL gives 0, negative gives 2 + * 3) not: inverts all bits. This gives -1 and -3 + * 3) - 1: positive EINVAL gives -1, negative 1 + *) +const + AVERROR_SIGN = (EINVAL shr 30) and $00000002 - 1; + +(* +#if EINVAL > 0 +#define AVERROR(e) (-(e)) {**< Returns a negative error code from a POSIX error code, to return from library functions. *} +#define AVUNERROR(e) (-(e)) {**< Returns a POSIX error code from a library function error return value. *} +#else +{* Some platforms have E* and errno already negated. *} +#define AVERROR(e) (e) +#define AVUNERROR(e) (e) +#endif +*) + +const + AVERROR_UNKNOWN = AVERROR_SIGN * EINVAL; (**< unknown error *) + AVERROR_IO = AVERROR_SIGN * EIO; (**< I/O error *) + AVERROR_NUMEXPECTED = AVERROR_SIGN * EDOM; (**< Number syntax expected in filename. *) + AVERROR_INVALIDDATA = AVERROR_SIGN * EINVAL; (**< invalid data found *) + AVERROR_NOMEM = AVERROR_SIGN * ENOMEM; (**< not enough memory *) + AVERROR_NOFMT = AVERROR_SIGN * EILSEQ; (**< unknown format *) + AVERROR_NOTSUPP = AVERROR_SIGN * ENOSYS; (**< Operation not supported. *) + AVERROR_NOENT = AVERROR_SIGN * ENOENT; (**< No such file or directory. *) +{$IF LIBAVCODEC_VERSION >= 52017000} // 52.17.0 + AVERROR_EOF = AVERROR_SIGN * EPIPE; (**< End of file. *) +{$IFEND} + // Note: function calls as constant-initializers are invalid + //AVERROR_PATCHWELCOME = -MKTAG('P','A','W','E'); {**< Not yet implemented in FFmpeg. Patches welcome. *} + AVERROR_PATCHWELCOME = -(ord('P') or (ord('A') shl 8) or (ord('W') shl 16) or (ord('E') shl 24)); +{$IFEND} + +{$IF LIBAVUTIL_VERSION >= 50013000} // >= 50.13.0 +(* + * Puts a description of the AVERROR code errnum in errbuf. + * In case of failure the global variable errno is set to indicate the + * error. Even in case of failure av_strerror() will print a generic + * error message indicating the errnum provided to errbuf. + * + * @param errbuf_size the size in bytes of errbuf + * @return 0 on success, a negative value if a description for errnum + * cannot be found + *) + +function av_strerror(errnum: cint; errbuf: Pchar; errbuf_size: cint): cint; + cdecl; external av__util; +{$IFEND} diff --git a/VideoPreview/src/lib/ffmpeg/mathematics.pas b/VideoPreview/src/lib/ffmpeg/mathematics.pas new file mode 100644 index 00000000..3a1f6a2c --- /dev/null +++ b/VideoPreview/src/lib/ffmpeg/mathematics.pas @@ -0,0 +1,119 @@ +(* + * copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + *) + +(* + * This is a part of Pascal porting of ffmpeg. + * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows. + * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT + * in the source codes. + * - Changes and updates by the UltraStar Deluxe Team + *) + +(* + * Conversion of libavutil/mathematics.h + * avutil max. version 50.15.2, revision 23059, Tue May 11 22:10:00 2010 CET + * + *) + +unit mathematics; + +{$IFDEF FPC} + {$MODE DELPHI } + {$PACKENUM 4} (* use 4-byte enums *) + {$PACKRECORDS C} (* C/C++-compatible record packing *) +{$ELSE} + {$MINENUMSIZE 4} (* use 4-byte enums *) +{$ENDIF} + +interface + +uses + ctypes, + rational, + UConfig; + +const + M_E = 2.7182818284590452354; // e + M_LN2 = 0.69314718055994530942; // log_e 2 + M_LN10 = 2.30258509299404568402; // log_e 10 +{$IF LIBAVUTIL_VERSION >= 50009000} // >= 50.9.0 + M_LOG2_10 = 3.32192809488736234787; // log_2 10 +{$IFEND} + M_PI = 3.14159265358979323846; // pi + M_SQRT1_2 = 0.70710678118654752440; // 1/sqrt(2) +{$IF LIBAVUTIL_VERSION >= 50014000} // >= 50.14.0 + M_SQRT2 = 1.41421356237309504880; // sqrt(2) +{$IFEND} +{$IF LIBAVUTIL_VERSION >= 50005001} // >= 50.5.1 + NAN = 0.0/0.0; + INFINITY = 1.0/0.0; +{$IFEND} + +type + TAVRounding = ( + AV_ROUND_ZERO = 0, ///< Round toward zero. + AV_ROUND_INF = 1, ///< Round away from zero. + AV_ROUND_DOWN = 2, ///< Round toward -infinity. + AV_ROUND_UP = 3, ///< Round toward +infinity. + AV_ROUND_NEAR_INF = 5 ///< Round to nearest and halfway cases away from zero. + ); + +{$IF LIBAVUTIL_VERSION >= 49013000} // 49.13.0 +(** + * Returns the greatest common divisor of a and b. + * If both a or b are 0 or either or both are <0 then behavior is + * undefined. + *) +function av_gcd(a: cint64; b: cint64): cint64; + cdecl; external av__util; {av_const} +{$IFEND} + +(** + * Rescales a 64-bit integer with rounding to nearest. + * A simple a*b/c isn't possible as it can overflow. + *) +function av_rescale (a, b, c: cint64): cint64; + cdecl; external av__util; {av_const} + +(** + * Rescales a 64-bit integer with specified rounding. + * A simple a*b/c isn't possible as it can overflow. + *) +function av_rescale_rnd (a, b, c: cint64; enum: TAVRounding): cint64; + cdecl; external av__util; {av_const} + +(** + * Rescales a 64-bit integer by 2 rational numbers. + *) +function av_rescale_q (a: cint64; bq, cq: TAVRational): cint64; + cdecl; external av__util; {av_const} + +{$IF LIBAVUTIL_VERSION >= 50008000} // 50.8.0 +(** + * Compares 2 timestamps each in its own timebases. + * The result of the function is undefined if one of the timestamps + * is outside the int64_t range when represented in the others timebase. + * @return -1 if ts_a is before ts_b, 1 if ts_a is after ts_b or 0 if they represent the same position + *) +function av_compare_ts(ts_a: cint64; tb_a: TAVRational; ts_b: cint64; tb_b: TAVRational): cint; + cdecl; external av__util; +{$IFEND} + +implementation + +end. diff --git a/VideoPreview/src/lib/ffmpeg/opt.pas b/VideoPreview/src/lib/ffmpeg/opt.pas new file mode 100644 index 00000000..c755ed35 --- /dev/null +++ b/VideoPreview/src/lib/ffmpeg/opt.pas @@ -0,0 +1,263 @@ +(* + * AVOptions + * copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + *) + +(* + * This is a part of Pascal porting of ffmpeg. + * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows. + * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT + * in the source codes. + * - Changes and updates by the UltraStar Deluxe Team + * + * Conversion of libavcodec/opt.h + * Max. avcodec version: 52.67.0, revision 23057, Tue May 11 18:17 2010 CET + * + *) + +unit opt; + +{$IFDEF FPC} + {$MODE DELPHI} + {$PACKENUM 4} (* use 4-byte enums *) + {$PACKRECORDS C} (* C/C++-compatible record packing *) +{$ELSE} + {$MINENUMSIZE 4} (* use 4-byte enums *) +{$ENDIF} + +interface + +uses + ctypes, + rational, + UConfig; + +type + TAVOptionType = ( + FF_OPT_TYPE_FLAGS, + FF_OPT_TYPE_INT, + FF_OPT_TYPE_INT64, + FF_OPT_TYPE_DOUBLE, + FF_OPT_TYPE_FLOAT, + FF_OPT_TYPE_STRING, + FF_OPT_TYPE_RATIONAL, + FF_OPT_TYPE_BINARY, ///< offset must point to a pointer immediately followed by an int for the length + FF_OPT_TYPE_CONST = 128 + ); + +const + AV_OPT_FLAG_ENCODING_PARAM = 1; ///< a generic parameter which can be set by the user for muxing or encoding + AV_OPT_FLAG_DECODING_PARAM = 2; ///< a generic parameter which can be set by the user for demuxing or decoding + AV_OPT_FLAG_METADATA = 4; ///< some data extracted or inserted into the file like title, comment, ... + AV_OPT_FLAG_AUDIO_PARAM = 8; + AV_OPT_FLAG_VIDEO_PARAM = 16; + AV_OPT_FLAG_SUBTITLE_PARAM = 32; + +type + (** + * AVOption + *) + PAVOption = ^TAVOption; + TAVOption = record + name: {const} PAnsiChar; + + (** + * short English help text + * @todo What about other languages? + *) + help: {const} PAnsiChar; + + (** + * The offset relative to the context structure where the option + * value is stored. It should be 0 for named constants. + *) + offset: cint; + type_: TAVOptionType; + + (** + * the default value for scalar options + *) + default_val: cdouble; + min: cdouble; ///< minimum valid value for the option + max: cdouble; ///< maximum valid value for the option + + flags: cint; +//FIXME think about enc-audio, ... style flags + + (** + * The logical unit to which the option belongs. Non-constant + * options and corresponding named constants share the same + * unit. May be NULL. + *) + unit_: {const} PAnsiChar; + end; + +{$IF LIBAVCODEC_VERSION >= 52042000} // >= 52.42.0 +(** + * AVOption2. + * THIS IS NOT PART OF THE API/ABI YET! + * This is identical to AVOption except that default_val was replaced by + * an union, it should be compatible with AVOption on normal platforms. + *) +type + PAVOption2 = ^TAVOption2; + TAVOption2 = record + name : {const} PAnsiChar; + + (** + * short English help text + * @todo What about other languages? + *) + help : {const} PAnsiChar; + + (** + * The offset relative to the context structure where the option + * value is stored. It should be 0 for named constants. + *) + offset : cint; + type_ : TAVOptionType; + + (** + * the default value for scalar options + *) + default_val : record + case cint of + 0 : (dbl: cdouble); + 1 : (str: PAnsiChar); + end; + min : cdouble; + max : cdouble; + flags : cint; +//FIXME think about enc-audio, ... style flags + + (** + * The logical unit to which the option belongs. Non-constant + * options and corresponding named constants share the same + * unit. May be NULL. + *) + unit_: {const} PAnsiChar; + end; +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0 +(** + * Looks for an option in obj. Looks only for the options which + * have the flags set as specified in mask and flags (that is, + * for which it is the case that opt->flags & mask == flags). + * + * @param[in] obj a pointer to a struct whose first element is a + * pointer to an AVClass + * @param[in] name the name of the option to look for + * @param[in] unit the unit of the option to look for, or any if NULL + * @return a pointer to the option found, or NULL if no option + * has been found + *) +function av_find_opt(obj: Pointer; {const} name: {const} PAnsiChar; {const} unit_: PAnsiChar; mask: cint; flags: cint): {const} PAVOption; + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_VERSION_MAJOR < 53} + +(** + * @see av_set_string2() + *) +function av_set_string(obj: pointer; name: {const} PAnsiChar; val: {const} PAnsiChar): {const} PAVOption; + cdecl; external av__codec; deprecated; + +{$IF LIBAVCODEC_VERSION >= 51059000} // 51.59.0 +(** + * @return a pointer to the AVOption corresponding to the field set or + * NULL if no matching AVOption exists, or if the value val is not + * valid + * @see av_set_string3() + *) +function av_set_string2(obj: Pointer; name: {const} PAnsiChar; val: {const} PAnsiChar; alloc: cint): {const} PAVOption; + cdecl; external av__codec; deprecated; +{$IFEND} + +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 52007000} // 52.7.0 +(** + * Sets the field of obj with the given name to value. + * + * @param[in] obj A struct whose first element is a pointer to an + * AVClass. + * @param[in] name the name of the field to set + * @param[in] val The value to set. If the field is not of a string + * type, then the given string is parsed. + * SI postfixes and some named scalars are supported. + * If the field is of a numeric type, it has to be a numeric or named + * scalar. Behavior with more than one scalar and +- infix operators + * is undefined. + * If the field is of a flags type, it has to be a sequence of numeric + * scalars or named flags separated by '+' or '-'. Prefixing a flag + * with '+' causes it to be set without affecting the other flags; + * similarly, '-' unsets a flag. + * @param[out] o_out if non-NULL put here a pointer to the AVOption + * found + * @param alloc when 1 then the old value will be av_freed() and the + * new av_strduped() + * when 0 then no av_free() nor av_strdup() will be used + * @return 0 if the value has been set, or an AVERROR code in case of + * error: + * AVERROR(ENOENT) if no matching option exists + * AVERROR(ERANGE) if the value is out of range + * AVERROR(EINVAL) if the value is not valid + *) +function av_set_string3(obj: Pointer; name: {const} PAnsiChar; val: {const} PAnsiChar; alloc: cint; out o_out: {const} PAVOption): cint; + cdecl; external av__codec; +{$IFEND} + +function av_set_double(obj: pointer; name: {const} PAnsiChar; n: cdouble): PAVOption; + cdecl; external av__codec; + +function av_set_q(obj: pointer; name: {const} PAnsiChar; n: TAVRational): PAVOption; + cdecl; external av__codec; + +function av_set_int(obj: pointer; name: {const} PAnsiChar; n: cint64): PAVOption; + cdecl; external av__codec; + +function av_get_double(obj: pointer; name: {const} PAnsiChar; var o_out: {const} PAVOption): cdouble; + cdecl; external av__codec; + +function av_get_q(obj: pointer; name: {const} PAnsiChar; var o_out: {const} PAVOption): TAVRational; + cdecl; external av__codec; + +function av_get_int(obj: pointer; name: {const} PAnsiChar; var o_out: {const} PAVOption): cint64; + cdecl; external av__codec; + +function av_get_string(obj: pointer; name: {const} PAnsiChar; var o_out: {const} PAVOption; buf: PAnsiChar; buf_len: cint): PAnsiChar; + cdecl; external av__codec; + +function av_next_option(obj: pointer; last: {const} PAVOption): PAVOption; + cdecl; external av__codec; + +function av_opt_show(obj: pointer; av_log_obj: pointer): cint; + cdecl; external av__codec; + +procedure av_opt_set_defaults(s: pointer); + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0 +procedure av_opt_set_defaults2(s: Pointer; mask: cint; flags: cint); + cdecl; external av__codec; +{$IFEND} + +implementation + +end. diff --git a/VideoPreview/src/lib/ffmpeg/rational.pas b/VideoPreview/src/lib/ffmpeg/rational.pas new file mode 100644 index 00000000..6ca9c0d1 --- /dev/null +++ b/VideoPreview/src/lib/ffmpeg/rational.pas @@ -0,0 +1,174 @@ +(* + * rational numbers + * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + *) + +(* + * This is a part of Pascal porting of ffmpeg. + * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows. + * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT + * in the source codes. + * - Changes and updates by the UltraStar Deluxe Team + *) + +(* + * Conversion of libavutil/rational.h + * avutil max. version 50.15.2, revision 23059, Tue May 11 22:10:00 2010 CET + * + *) + +unit rational; + +{$IFDEF FPC} + {$MODE DELPHI} + {$PACKENUM 4} (* use 4-byte enums *) + {$PACKRECORDS C} (* C/C++-compatible record packing *) +{$ELSE} + {$MINENUMSIZE 4} (* use 4-byte enums *) +{$ENDIF} + +{$I switches.inc} + +interface + +uses + ctypes, + UConfig; + +type + (* + * rational number numerator/denominator + *) + PAVRational = ^TAVRational; + TAVRational = record + num: cint; ///< numerator + den: cint; ///< denominator + end; + + TAVRationalArray = array[0 .. (MaxInt div SizeOf(TAVRational))-1] of TAVRational; + PAVRationalArray = ^TAVRationalArray; + +(** + * Compares two rationals. + * @param a first rational + * @param b second rational + * @return 0 if a==b, 1 if a>b and -1 if a<b + *) +function av_cmp_q(a: TAVRational; b: TAVRational): cint; {$IFDEF HasInline}inline;{$ENDIF} + +(** + * Converts rational to double. + * @param a rational to convert + * @return (double) a + *) +function av_q2d(a: TAVRational): cdouble; {$IFDEF HasInline}inline;{$ENDIF} + +(** + * Reduces a fraction. + * This is useful for framerate calculations. + * @param dst_num destination numerator + * @param dst_den destination denominator + * @param num source numerator + * @param den source denominator + * @param max the maximum allowed for dst_num & dst_den + * @return 1 if exact, 0 otherwise + *) +function av_reduce(dst_num: PCint; dst_den: PCint; num: cint64; den: cint64; max: cint64): cint; + cdecl; external av__util; + +(** + * Multiplies two rationals. + * @param b first rational + * @param c second rational + * @return b*c + *) +function av_mul_q(b: TAVRational; c: TAVRational): TAVRational; + cdecl; external av__util; {av_const} + +(** + * Divides one rational by another. + * @param b first rational + * @param c second rational + * @return b/c + *) +function av_div_q(b: TAVRational; c: TAVRational): TAVRational; + cdecl; external av__util; {av_const} + +(** + * Adds two rationals. + * @param b first rational + * @param c second rational + * @return b+c + *) +function av_add_q(b: TAVRational; c: TAVRational): TAVRational; + cdecl; external av__util; {av_const} + +(** + * Subtracts one rational from another. + * @param b first rational + * @param c second rational + * @return b-c + *) +function av_sub_q(b: TAVRational; c: TAVRational): TAVRational; + cdecl; external av__util; {av_const} + +(** + * Converts a double precision floating point number to a rational. + * @param d double to convert + * @param max the maximum allowed numerator and denominator + * @return (AVRational) d + *) +function av_d2q(d: cdouble; max: cint): TAVRational; + cdecl; external av__util; {av_const} + +{$IF LIBAVUTIL_VERSION >= 49011000} // 49.11.0 +(** + * @return 1 if q1 is nearer to q than q2, -1 if q2 is nearer + * than q1, 0 if they have the same distance. + *) +function av_nearer_q(q, q1, q2: TAVRational): cint; + cdecl; external av__util; + +(** + * Finds the nearest value in q_list to q. + * @param q_list an array of rationals terminated by {0, 0} + * @return the index of the nearest value found in the array + *) +function av_find_nearest_q_idx(q: TAVRational; q_list: {const} PAVRationalArray): cint; + cdecl; external av__util; +{$IFEND} + +implementation + +function av_cmp_q (a: TAVRational; b: TAVRational): cint; +var + tmp: cint64; +begin + tmp := a.num * cint64(b.den) - b.num * cint64(a.den); + + if (tmp <> 0) then + Result := (tmp shr 63) or 1 + else + Result := 0 +end; + +function av_q2d(a: TAVRational): cdouble; +begin + Result := a.num / a.den; +end; + +end. diff --git a/VideoPreview/src/lib/ffmpeg/swscale.pas b/VideoPreview/src/lib/ffmpeg/swscale.pas new file mode 100644 index 00000000..4f923f04 --- /dev/null +++ b/VideoPreview/src/lib/ffmpeg/swscale.pas @@ -0,0 +1,404 @@ +(* + * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at> + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + *) + +(* + * FFmpeg Pascal port + * - Ported by the UltraStar Deluxe Team + *) + +(* + * Conversion of libswscale/swscale.h + * Max. version: 0.10.0, revision 31050, Tue May 11 19:40:00 2010 CET + *) + +unit swscale; + +{$IFDEF FPC} + {$MODE DELPHI } + {$PACKENUM 4} (* use 4-byte enums *) + {$PACKRECORDS C} (* C/C++-compatible record packing *) +{$ELSE} + {$MINENUMSIZE 4} (* use 4-byte enums *) +{$ENDIF} + +{$IFDEF DARWIN} + {$linklib libswscale} +{$ENDIF} + +interface + +uses + ctypes, + avutil, + avcodec, + UConfig; + +const + (* + * IMPORTANT: The official FFmpeg C headers change very quickly. Often some + * of the data structures are changed so that they become incompatible with + * older header files. The Pascal headers have to be adjusted to those changes, + * otherwise the application might crash randomly or strange bugs (not + * necessarily related to video or audio due to buffer overflows etc.) might + * occur. + * + * In the past users reported problems with USDX that took hours to fix and + * the problem was an unsupported version of FFmpeg. So we decided to disable + * support for future versions of FFmpeg until the headers are revised by us + * for that version as they otherwise most probably will break USDX. + * + * If the headers do not yet support your FFmpeg version you may want to + * adjust the max. version numbers manually but please note: it may work but + * in many cases it does not. The USDX team does NOT PROVIDE ANY SUPPORT + * for the game if the MAX. VERSION WAS CHANGED. + * + * The only safe way to support new versions of FFmpeg is to add the changes + * of the FFmpeg git repository C headers to the Pascal headers. + * You can accelerate this process by posting a patch with the git changes + * translated to Pascal to our bug tracker (please join our IRC chat before + * you start working on it). Simply adjusting the max. versions is NOT a valid + * fix. + *) + (* Max. supported version by this header *) + LIBSWSCALE_MAX_VERSION_MAJOR = 0; + LIBSWSCALE_MAX_VERSION_MINOR = 10; + LIBSWSCALE_MAX_VERSION_RELEASE = 0; + LIBSWSCALE_MAX_VERSION = (LIBSWSCALE_MAX_VERSION_MAJOR * VERSION_MAJOR) + + (LIBSWSCALE_MAX_VERSION_MINOR * VERSION_MINOR) + + (LIBSWSCALE_MAX_VERSION_RELEASE * VERSION_RELEASE); + +(* Check if linked versions are supported *) +{$IF (LIBSWSCALE_VERSION > LIBSWSCALE_MAX_VERSION)} + {$MESSAGE Error 'Linked version of libswscale is not yet supported!'} +{$IFEND} + +type + TQuadCintArray = array[0..3] of cint; + PQuadCintArray = ^TQuadCintArray; + TCintArray = array[0..0] of cint; + PCintArray = ^TCintArray; + TPCuint8Array = array[0..0] of PCuint8; + PPCuint8Array = ^TPCuint8Array; + +{$IF LIBSWSCALE_VERSION >= 000006001} // 0.6.1 +(** + * Returns the LIBSWSCALE_VERSION_INT constant. + *) +function swscale_version(): cuint; + cdecl; external sw__scale; +{$IFEND} + +{$IF LIBSWSCALE_VERSION >= 000007002} // 0.7.2 +(** + * Returns the libswscale build-time configuration. + *) +function swscale_configuration(): PAnsiChar; + cdecl; external sw__scale; + +(** + * Returns the libswscale license. + *) +function swscale_license(): PAnsiChar; + cdecl; external sw__scale; +{$IFEND} + +const + (* values for the flags, the stuff on the command line is different *) + SWS_FAST_BILINEAR = 1; + SWS_BILINEAR = 2; + SWS_BICUBIC = 4; + SWS_X = 8; + SWS_POINT = $10; + SWS_AREA = $20; + SWS_BICUBLIN = $40; + SWS_GAUSS = $80; + SWS_SINC = $100; + SWS_LANCZOS = $200; + SWS_SPLINE = $400; + + SWS_SRC_V_CHR_DROP_MASK = $30000; + SWS_SRC_V_CHR_DROP_SHIFT = 16; + + SWS_PARAM_DEFAULT = 123456; + + SWS_PRINT_INFO = $1000; + + // the following 3 flags are not completely implemented + // internal chrominace subsampling info + SWS_FULL_CHR_H_INT = $2000; + // input subsampling info + SWS_FULL_CHR_H_INP = $4000; + SWS_DIRECT_BGR = $8000; + SWS_ACCURATE_RND = $40000; + SWS_BITEXACT = $80000; + + SWS_CPU_CAPS_MMX = $80000000; + SWS_CPU_CAPS_MMX2 = $20000000; + SWS_CPU_CAPS_3DNOW = $40000000; + SWS_CPU_CAPS_ALTIVEC = $10000000; + SWS_CPU_CAPS_BFIN = $01000000; + + SWS_MAX_REDUCE_CUTOFF = 0.002; + + SWS_CS_ITU709 = 1; + SWS_CS_FCC = 4; + SWS_CS_ITU601 = 5; + SWS_CS_ITU624 = 5; + SWS_CS_SMPTE170M = 5; + SWS_CS_SMPTE240M = 7; + SWS_CS_DEFAULT = 5; + +{$IF LIBSWSCALE_VERSION >= 000010000} // 0.10.0 +(** + * Returns a pointer to yuv<->rgb coefficients for the given colorspace + * suitable for sws_setColorspaceDetails(). + * + * @param colorspace One of the SWS_CS_* macros. If invalid, + * SWS_CS_DEFAULT is used. + *) + function sws_getCoefficients(colorspace: cint): Pcint; + cdecl; external sw__scale; +{$IFEND} + +type + + // when used for filters they must have an odd number of elements + // coeffs cannot be shared between vectors + PSwsVector = ^TSwsVector; + TSwsVector = record + coeff: PCdouble; // pointer to the list of coefficients + length: cint; // number of coefficients in the vector + end; + + // vectors can be shared + PSwsFilter = ^TSwsFilter; + TSwsFilter = record + lumH: PSwsVector; + lumV: PSwsVector; + chrH: PSwsVector; + chrV: PSwsVector; + end; + + PSwsContext = ^TSwsContext; + TSwsContext = record + {internal structure} + end; + +{$IF LIBSWSCALE_VERSION >= 000008000} // 0.8.0 +(** + * Returns a positive value if pix_fmt is a supported input format, 0 + * otherwise. + *) + function sws_isSupportedInput(pix_fmt: TAVPixelFormat): cint; + cdecl; external sw__scale; + +(** + * Returns a positive value if pix_fmt is a supported output format, 0 + * otherwise. + *) + function sws_isSupportedOutput(pix_fmt: TAVPixelFormat): cint; + cdecl; external sw__scale; +{$IFEND} + +(** + * Frees the swscaler context swsContext. + * If swsContext is NULL, then does nothing. + *) +procedure sws_freeContext(swsContext: PSwsContext); + cdecl; external sw__scale; + +(** + * Allocates and returns a SwsContext. You need it to perform + * scaling/conversion operations using sws_scale(). + * + * @param srcW the width of the source image + * @param srcH the height of the source image + * @param srcFormat the source image format + * @param dstW the width of the destination image + * @param dstH the height of the destination image + * @param dstFormat the destination image format + * @param flags specify which algorithm and options to use for rescaling + * @return a pointer to an allocated context, or NULL in case of error + *) +function sws_getContext(srcW: cint; srcH: cint; srcFormat: TAVPixelFormat; + dstW: cint; dstH: cint; dstFormat: TAVPixelFormat; + flags: cint; srcFilter: PSwsFilter; + dstFilter: PSwsFilter; param: PCdouble): PSwsContext; + cdecl; external sw__scale; + +(** + * Scales the image slice in srcSlice and puts the resulting scaled + * slice in the image in dst. A slice is a sequence of consecutive + * rows in an image. + * + * Slices have to be provided in sequential order, either in + * top-bottom or bottom-top order. If slices are provided in + * non-sequential order the behavior of the function is undefined. + * + * @param context the scaling context previously created with + * sws_getContext() + * @param srcSlice the array containing the pointers to the planes of + * the source slice + * @param srcStride the array containing the strides for each plane of + * the source image + * @param srcSliceY the position in the source image of the slice to + * process, that is the number (counted starting from + * zero) in the image of the first row of the slice + * @param srcSliceH the height of the source slice, that is the number + * of rows in the slice + * @param dst the array containing the pointers to the planes of + * the destination image + * @param dstStride the array containing the strides for each plane of + * the destination image + * @return the height of the output slice + *) +function sws_scale(context: PSwsContext; {const} srcSlice: PPCuint8Array; {const} srcStride: PCintArray; + srcSliceY: cint; srcSliceH: cint; {const} dst: PPCuint8Array; {const} dstStride: PCintArray): cint; + cdecl; external sw__scale; + +{$IF LIBSWSCALE_VERSION_MAJOR < 1} +// deprecated. Use sws_scale() instead. +function sws_scale_ordered(context: PSwsContext; {const} src: PPCuint8Array; + srcStride: PCintArray; srcSliceY: cint; srcSliceH: cint; + dst: PPCuint8Array; dstStride: PCintArray): cint; + cdecl; external sw__scale; deprecated; +{$IFEND} + +(** + * @param inv_table the yuv2rgb coefficients, normally ff_yuv2rgb_coeffs[x] + * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235 + * @return -1 if not supported + *) +function sws_setColorspaceDetails(c: PSwsContext; inv_table: PQuadCintArray; + srcRange: cint; table: PQuadCintArray; dstRange: cint; + brightness: cint; contrast: cint; saturation: cint): cint; + cdecl; external sw__scale; + +(** + * @return -1 if not supported + *) +function sws_getColorspaceDetails(c: PSwsContext; var inv_table: PQuadCintArray; + var srcRange: cint; var table: PQuadCintArray; var dstRange: cint; + var brightness: cint; var contrast: cint; var saturation: cint): cint; + cdecl; external sw__scale; + +(** + * Returns a normalized Gaussian curve used to filter stuff + * quality=3 is high quality, lower is lower quality. + *) +function sws_getGaussianVec(variance: cdouble; quality: cdouble): PSwsVector; + cdecl; external sw__scale; + +(** + * Allocates and returns a vector with length coefficients, all + * with the same value c. + *) +function sws_getConstVec(c: cdouble; length: cint): PSwsVector; + cdecl; external sw__scale; + +(** + * Allocates and returns a vector with just one coefficient, with + * value 1.0. + *) +function sws_getIdentityVec: PSwsVector; + cdecl; external sw__scale; + +(** + * Scales all the coefficients of a by the scalar value. + *) +procedure sws_scaleVec(a: PSwsVector; scalar: cdouble); + cdecl; external sw__scale; + +(** + * Scales all the coefficients of a so that their sum equals height. + *) +procedure sws_normalizeVec(a: PSwsVector; height: cdouble); + cdecl; external sw__scale; + +procedure sws_convVec(a: PSwsVector; b: PSwsVector); + cdecl; external sw__scale; + +procedure sws_addVec(a: PSwsVector; b: PSwsVector); + cdecl; external sw__scale; + +procedure sws_subVec(a: PSwsVector; b: PSwsVector); + cdecl; external sw__scale; + +procedure sws_shiftVec(a: PSwsVector; shift: cint); + cdecl; external sw__scale; + +(** + * Allocates and returns a clone of the vector a, that is a vector + * with the same coefficients as a. + *) +function sws_cloneVec(a: PSwsVector): PSwsVector; + cdecl; external sw__scale; + +{$IF LIBSWSCALE_VERSION_MAJOR < 1} +// deprecated Use sws_printVec2() instead. + +procedure sws_printVec(a: PSwsVector); + cdecl; external sw__scale; deprecated; +{$IFEND} + +{$IF LIBSWSCALE_VERSION >= 000007000} // >= 0.7.0 +(** + * Prints with av_log() a textual representation of the vector a + * if log_level <= av_log_level. + *) +procedure sws_printVec2(a: PSwsVector; + log_ctx: PAVClass; // PAVClass is declared in avcodec.pas + log_level: cint); + cdecl; external sw__scale; +{$IFEND} + +procedure sws_freeVec(a: PSwsVector); + cdecl; external sw__scale; + +function sws_getDefaultFilter(lumaGBlur: cfloat; chromaGBlur: cfloat; + lumaSharpen: cfloat; chromaSharpen: cfloat; + chromaHShift: cfloat; chromaVShift: cfloat; + verbose: cint): PSwsFilter; + cdecl; external sw__scale; + +procedure sws_freeFilter(filter: PSwsFilter); + cdecl; external sw__scale; + +(** + * Checks if context can be reused, otherwise reallocates a new + * one. + * + * If context is NULL, just calls sws_getContext() to get a new + * context. Otherwise, checks if the parameters are the ones already + * saved in context. If that is the case, returns the current + * context. Otherwise, frees context and gets a new context with + * the new parameters. + * + * Be warned that srcFilter and dstFilter are not checked, they + * are assumed to remain the same. + *) +function sws_getCachedContext(context: PSwsContext; + srcW: cint; srcH: cint; srcFormat: TAVPixelFormat; + dstW: cint; dstH: cint; dstFormat: TAVPixelFormat; + flags: cint; srcFilter: PSwsFilter; + dstFilter: PSwsFilter; param: PCdouble): PSwsContext; + cdecl; external sw__scale; + +implementation + +end. |