diff options
Diffstat (limited to 'src/lib/ffmpeg-0.10/avcodec.pas')
| -rw-r--r-- | src/lib/ffmpeg-0.10/avcodec.pas | 4747 |
1 files changed, 4747 insertions, 0 deletions
diff --git a/src/lib/ffmpeg-0.10/avcodec.pas b/src/lib/ffmpeg-0.10/avcodec.pas new file mode 100644 index 00000000..b2ed9fd2 --- /dev/null +++ b/src/lib/ffmpeg-0.10/avcodec.pas @@ -0,0 +1,4747 @@ +(* + * 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 + * version: 52.122.0 + * + *) + +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, + 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. + *) + (* Supported version by this header *) + LIBAVCODEC_MAX_VERSION_MAJOR = 52; + LIBAVCODEC_MAX_VERSION_MINOR = 122; + LIBAVCODEC_MAX_VERSION_RELEASE = 0; + 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 = 52; + LIBAVCODEC_MIN_VERSION_MINOR = 122; + 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} + +(** + * Those FF_API_* defines are not part of public API. + * They may change, break or disappear at any time. + *) +const +{$ifndef FF_API_PALETTE_CONTROL} + FF_API_PALETTE_CONTROL = LIBAVCODEC_VERSION_MAJOR < 54; +{$endif} +{$ifndef FF_API_MM_FLAGS} + FF_API_MM_FLAGS = LIBAVCODEC_VERSION_MAJOR < 53; +{$endif} +{$ifndef FF_API_OPT_SHOW} + FF_API_OPT_SHOW = LIBAVCODEC_VERSION_MAJOR < 53; +{$endif} +{$ifndef FF_API_AUDIO_OLD} + FF_API_AUDIO_OLD = LIBAVCODEC_VERSION_MAJOR < 53; +{$endif} +{$ifndef FF_API_VIDEO_OLD} + FF_API_VIDEO_OLD = LIBAVCODEC_VERSION_MAJOR < 53; +{$endif} +{$ifndef FF_API_SUBTITLE_OLD} + FF_API_SUBTITLE_OLD = LIBAVCODEC_VERSION_MAJOR < 53; +{$endif} +{$ifndef FF_API_USE_LPC} + FF_API_USE_LPC = LIBAVCODEC_VERSION_MAJOR < 53; +{$endif} +{$ifndef FF_API_SET_STRING_OLD} + FF_API_SET_STRING_OLD = LIBAVCODEC_VERSION_MAJOR < 53; +{$endif} +{$ifndef FF_API_INOFFICIAL} + FF_API_INOFFICIAL = LIBAVCODEC_VERSION_MAJOR < 53; +{$endif} +{$ifndef FF_API_OLD_SAMPLE_FMT} + FF_API_OLD_SAMPLE_FMT = LIBAVCODEC_VERSION_MAJOR < 54; +{$endif} +{$ifndef FF_API_OLD_AUDIOCONVERT} + FF_API_OLD_AUDIOCONVERT = LIBAVCODEC_VERSION_MAJOR < 54; +{$endif} +{$ifndef FF_API_HURRY_UP} + FF_API_HURRY_UP = LIBAVCODEC_VERSION_MAJOR < 53; +{$endif} +{$ifndef FF_API_RATE_EMU} + FF_API_RATE_EMU = LIBAVCODEC_VERSION_MAJOR < 53; +{$endif} +{$ifndef FF_API_MB_Q} + FF_API_MB_Q = LIBAVCODEC_VERSION_MAJOR < 53; +{$endif} +{$ifndef FF_API_ANTIALIAS_ALGO} + FF_API_ANTIALIAS_ALGO = LIBAVCODEC_VERSION_MAJOR < 54; +{$endif} +{$ifndef FF_API_REQUEST_CHANNELS} + FF_API_REQUEST_CHANNELS = LIBAVCODEC_VERSION_MAJOR < 54; +{$endif} +{$ifndef FF_API_OPT_H} + FF_API_OPT_H = LIBAVCODEC_VERSION_MAJOR < 54; +{$endif} +{$ifndef FF_API_THREAD_INIT} + FF_API_THREAD_INIT = LIBAVCODEC_VERSION_MAJOR < 54; +{$endif} +{$ifndef FF_API_OLD_FF_PICT_TYPES} + FF_API_OLD_FF_PICT_TYPES = LIBAVCODEC_VERSION_MAJOR < 54; +{$endif} +{$ifndef FF_API_FLAC_GLOBAL_OPTS} + FF_API_FLAC_GLOBAL_OPTS = LIBAVCODEC_VERSION_MAJOR < 54; +{$endif} +{$ifndef FF_API_GET_PIX_FMT_NAME} + FF_API_GET_PIX_FMT_NAME = LIBAVCODEC_VERSION_MAJOR < 54; +{$endif} + +type + FF_INTERNALC_MEM_TYPE = cuint; + +const + AV_NOPTS_VALUE: cint64 = $8000000000000000; + AV_TIME_BASE = 1000000; + AV_TIME_BASE_Q: TAVRational = (num: 1; den: AV_TIME_BASE); + +(** + * Identify the syntax and semantics of the bitstream. + * The principle is roughly: + * Two decoders with the same ID can decode the same streams. + * Two encoders with the same ID can encode compatible streams. + * There may be slight deviations from the principle due to implementation + * details. + * + * If you add a codec ID to this list, add it so that + * 1. no value of a existing codec ID changes (that would break ABI), + * 2. it is as close as possible to similar codecs. + *) +type + TCodecID = ( + CODEC_ID_NONE, + + //* video codecs */ + CODEC_ID_MPEG1VIDEO, + CODEC_ID_MPEG2VIDEO, ///< preferred ID for MPEG-1/2 video decoding + CODEC_ID_MPEG2VIDEO_XVMC, + CODEC_ID_H261, + CODEC_ID_H263, + CODEC_ID_RV10, + CODEC_ID_RV20, + CODEC_ID_MJPEG, + CODEC_ID_MJPEGB, + CODEC_ID_LJPEG, + CODEC_ID_SP5X, + CODEC_ID_JPEGLS, + CODEC_ID_MPEG4, + CODEC_ID_RAWVIDEO, + CODEC_ID_MSMPEG4V1, + CODEC_ID_MSMPEG4V2, + CODEC_ID_MSMPEG4V3, + CODEC_ID_WMV1, + CODEC_ID_WMV2, + CODEC_ID_H263P, + CODEC_ID_H263I, + CODEC_ID_FLV1, + CODEC_ID_SVQ1, + CODEC_ID_SVQ3, + CODEC_ID_DVVIDEO, + CODEC_ID_HUFFYUV, + CODEC_ID_CYUV, + CODEC_ID_H264, + CODEC_ID_INDEO3, + CODEC_ID_VP3, + CODEC_ID_THEORA, + CODEC_ID_ASV1, + CODEC_ID_ASV2, + CODEC_ID_FFV1, + CODEC_ID_4XM, + CODEC_ID_VCR1, + CODEC_ID_CLJR, + CODEC_ID_MDEC, + CODEC_ID_ROQ, + CODEC_ID_INTERPLAY_VIDEO, + CODEC_ID_XAN_WC3, + CODEC_ID_XAN_WC4, + CODEC_ID_RPZA, + CODEC_ID_CINEPAK, + CODEC_ID_WS_VQA, + CODEC_ID_MSRLE, + CODEC_ID_MSVIDEO1, + CODEC_ID_IDCIN, + CODEC_ID_8BPS, + CODEC_ID_SMC, + CODEC_ID_FLIC, + CODEC_ID_TRUEMOTION1, + CODEC_ID_VMDVIDEO, + CODEC_ID_MSZH, + CODEC_ID_ZLIB, + CODEC_ID_QTRLE, + CODEC_ID_SNOW, + CODEC_ID_TSCC, + CODEC_ID_ULTI, + CODEC_ID_QDRAW, + CODEC_ID_VIXL, + CODEC_ID_QPEG, +{$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, + CODEC_ID_TQI, + CODEC_ID_AURA, + CODEC_ID_AURA2, + CODEC_ID_V210X, + CODEC_ID_TMV, + CODEC_ID_V210, + CODEC_ID_DPX, + CODEC_ID_MAD, + CODEC_ID_FRWU, + CODEC_ID_FLASHSV2, + CODEC_ID_CDGRAPHICS, + CODEC_ID_R210, + CODEC_ID_ANM, + CODEC_ID_BINKVIDEO, + CODEC_ID_IFF_ILBM, + CODEC_ID_IFF_BYTERUN1, + CODEC_ID_KGV1, + CODEC_ID_YOP, + CODEC_ID_VP8, + CODEC_ID_PICTOR, + CODEC_ID_ANSI, + CODEC_ID_A64_MULTI, + CODEC_ID_A64_MULTI5, + CODEC_ID_R10K, + CODEC_ID_MXPEG, + CODEC_ID_LAGARITH, + CODEC_ID_PRORES, + CODEC_ID_JV, + CODEC_ID_DFA, + CODEC_ID_8SVX_RAW, + + //* 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, + CODEC_ID_PCM_BLURAY, + CODEC_ID_PCM_LXF, + CODEC_ID_S302M, + + //* 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, + CODEC_ID_ADPCM_G722, + + //* 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, + 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, + CODEC_ID_TWINVQ, + CODEC_ID_TRUEHD, + CODEC_ID_MP4ALS, + CODEC_ID_ATRAC1, + CODEC_ID_BINKAUDIO_RDFT, + CODEC_ID_BINKAUDIO_DCT, + CODEC_ID_AAC_LATM, + CODEC_ID_QDMC, + CODEC_ID_CELT, + + //* 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, + CODEC_ID_HDMV_PGS_SUBTITLE, + CODEC_ID_DVB_TELETEXT, + CODEC_ID_SRT, + CODEC_ID_MICRODVD, + + //* 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_FFMETADATA= $21000 ///< Dummy codec for streams containing only metadata information. + ); + +type + TCodecType = TAVMediaType; + +const + CODEC_TYPE_UNKNOWN = AVMEDIA_TYPE_UNKNOWN; + CODEC_TYPE_VIDEO = AVMEDIA_TYPE_VIDEO; + CODEC_TYPE_AUDIO = AVMEDIA_TYPE_AUDIO; + CODEC_TYPE_DATA = AVMEDIA_TYPE_DATA; + CODEC_TYPE_SUBTITLE = AVMEDIA_TYPE_SUBTITLE; + CODEC_TYPE_ATTACHMENT = AVMEDIA_TYPE_ATTACHMENT; + CODEC_TYPE_NB = AVMEDIA_TYPE_NB; + +{$IF FF_API_OLD_AUDIOCONVERT} + +{$I libavcodec/audioconvert.pas} + +const + {* Audio channel masks *} + CH_FRONT_LEFT = AV_CH_FRONT_LEFT; + CH_FRONT_RIGHT = AV_CH_FRONT_RIGHT; + CH_FRONT_CENTER = AV_CH_FRONT_CENTER; + CH_LOW_FREQUENCY = AV_CH_LOW_FREQUENCY; + CH_BACK_LEFT = AV_CH_BACK_LEFT; + CH_BACK_RIGHT = AV_CH_BACK_RIGHT; + CH_FRONT_LEFT_OF_CENTER = AV_CH_FRONT_LEFT_OF_CENTER; + CH_FRONT_RIGHT_OF_CENTER = AV_CH_FRONT_RIGHT_OF_CENTER; + CH_BACK_CENTER = AV_CH_BACK_CENTER; + CH_SIDE_LEFT = AV_CH_SIDE_LEFT; + CH_SIDE_RIGHT = AV_CH_SIDE_RIGHT; + CH_TOP_CENTER = AV_CH_TOP_CENTER; + CH_TOP_FRONT_LEFT = AV_CH_TOP_FRONT_LEFT; + CH_TOP_FRONT_CENTER = AV_CH_TOP_FRONT_CENTER; + CH_TOP_FRONT_RIGHT = AV_CH_TOP_FRONT_RIGHT; + CH_TOP_BACK_LEFT = AV_CH_TOP_BACK_LEFT; + CH_TOP_BACK_CENTER = AV_CH_TOP_BACK_CENTER; + CH_TOP_BACK_RIGHT = AV_CH_TOP_BACK_RIGHT; + CH_STEREO_LEFT = AV_CH_STEREO_LEFT; + CH_STEREO_RIGHT = AV_CH_STEREO_RIGHT; + +{** Channel mask value used for AVCodecContext.request_channel_layout + * to indicate that the user requests the channel order of the decoder output + * to be the native codec channel order. + *} + CH_LAYOUT_NATIVE = AV_CH_LAYOUT_NATIVE; + + {* Audio channel convenience macros *} + CH_LAYOUT_MONO = AV_CH_LAYOUT_MONO; + CH_LAYOUT_STEREO = AV_CH_LAYOUT_STEREO; + CH_LAYOUT_2_1 = AV_CH_LAYOUT_2_1; + CH_LAYOUT_SURROUND = AV_CH_LAYOUT_SURROUND; + CH_LAYOUT_4POINT0 = AV_CH_LAYOUT_4POINT0; + CH_LAYOUT_2_2 = AV_CH_LAYOUT_2_2; + CH_LAYOUT_QUAD = AV_CH_LAYOUT_QUAD; + CH_LAYOUT_5POINT0 = AV_CH_LAYOUT_5POINT0; + CH_LAYOUT_5POINT1 = AV_CH_LAYOUT_5POINT1; + CH_LAYOUT_5POINT0_BACK = AV_CH_LAYOUT_5POINT0_BACK; + CH_LAYOUT_5POINT1_BACK = AV_CH_LAYOUT_5POINT1_BACK; + CH_LAYOUT_7POINT0 = AV_CH_LAYOUT_7POINT0; + CH_LAYOUT_7POINT1 = AV_CH_LAYOUT_7POINT1; + CH_LAYOUT_7POINT1_WIDE = AV_CH_LAYOUT_7POINT1_WIDE; + CH_LAYOUT_STEREO_DOWNMIX = AV_CH_LAYOUT_STEREO_DOWNMIX; +{$IFEND} + +{* in bytes *} + AVCODEC_MAX_AUDIO_FRAME_SIZE = 192000; // 1 second of 48khz 32bit audio + +{** + * 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; + +{** + * 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 + ); + + 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 + ); + +{$IF FF_API_FLAC_GLOBAL_OPTS} +(** + * LPC analysis type + *) + TAVLPCType = ( + AV_LPC_TYPE_DEFAULT = -1, ///< use the codec default LPC type + AV_LPC_TYPE_NONE = 0, ///< do not use LPC prediction or use all zero coefficients + AV_LPC_TYPE_FIXED = 1, ///< fixed LPC coefficients + AV_LPC_TYPE_LEVINSON = 2, ///< Levinson-Durbin recursion + AV_LPC_TYPE_CHOLESKY = 3, ///< Cholesky factorization + AV_LPC_TYPE_NB ///< Not part of ABI + ); +{$IFEND} + + TAVAudioServiceType =( + AV_AUDIO_SERVICE_TYPE_MAIN = 0, + AV_AUDIO_SERVICE_TYPE_EFFECTS = 1, + AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED = 2, + AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED = 3, + AV_AUDIO_SERVICE_TYPE_DIALOGUE = 4, + AV_AUDIO_SERVICE_TYPE_COMMENTARY = 5, + AV_AUDIO_SERVICE_TYPE_EMERGENCY = 6, + AV_AUDIO_SERVICE_TYPE_VOICE_OVER = 7, + AV_AUDIO_SERVICE_TYPE_KARAOKE = 8, + AV_AUDIO_SERVICE_TYPE_NB ///< Not part of ABI + ); + + 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 + 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 *} + 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 + CODEC_FLAG2_MBTREE = $00040000; ///< Use macroblock tree ratecontrol (x264 only) + CODEC_FLAG2_PSY = $00080000; ///< Use psycho visual optimizations. + CODEC_FLAG2_SSIM = $00100000; ///< Compute SSIM during encoding, error[] values are undefined. + CODEC_FLAG2_INTRA_REFRESH = $00200000; ///< Use periodic insertion of intra blocks instead of keyframes. + +(* 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; + + (** + * 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; + + (** + * Codec is experimental and is thus avoided in favor of non experimental + * encoders + *) + CODEC_CAP_EXPERIMENTAL = $0200; + + (** + * Codec should fill in channel configuration and samplerate instead of container + *) + CODEC_CAP_CHANNEL_CONF = $0400; + + (** + * Codec is able to deal with negative linesizes + *) + CODEC_CAP_NEG_LINESIZES = $0800; + + (** + * Codec supports frame-level multithreading. + *) + CODEC_CAP_FRAME_THREADS = $1000; + + (** + * Codec supports slice-based (or partition-based) multithreading. + *) + CODEC_CAP_SLICE_THREADS = $2000; + + (** + * Codec is lossless. + *) + CODEC_CAP_LOSSLESS = $80000000; + + //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 = $0020000; + //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...) + +type +(** + * Pan Scan area. + * This specifies the area which should be displayed. + * Note there may be multiple such areas for one frame. + *) + PAVPanScan = ^TAVPanScan; + TAVPanScan = record {24} + (*** id. + * - encoding: set by user. + * - decoding: set by libavcodec. *) + id: cint; + + (*** width and height in 1/16 pel + * - encoding: set by user. + * - decoding: set by libavcodec. *) + width: cint; + height: cint; + + (*** position of the top left corner in 1/16 pel for up to 3 fields/frames. + * - encoding: set by user. + * - decoding: set by libavcodec. *) + position: array [0..2] of array [0..1] of cint16; + end; {TAVPanScan} + +const + FF_QSCALE_TYPE_MPEG1 = 0; + FF_QSCALE_TYPE_MPEG2 = 1; + FF_QSCALE_TYPE_H264 = 2; + FF_QSCALE_TYPE_VP56 = 3; + + FF_BUFFER_TYPE_INTERNAL = 1; + FF_BUFFER_TYPE_USER = 2; ///< Direct rendering buffers (image is (de)allocated by user) + FF_BUFFER_TYPE_SHARED = 4; ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared + FF_BUFFER_TYPE_COPY = 8; ///< just a (modified) copy of some other buffer, don't dealloc anything. + +{$IF FF_API_OLD_FF_PICT_TYPES} +(* DEPRECATED, directly use the AV_PICTURE_TYPE_* enum values *) + 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; +{$IFEND} + + 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 = $08; // Codec will reuse the buffer (update) + + FF_ASPECT_EXTENDED = 15; + + FF_RC_STRATEGY_XVID = 1; + + FF_BUG_AUTODETECT = 1; ///< autodetection + FF_BUG_OLD_MSMPEG4 = 2; + FF_BUG_XVID_ILACE = 4; + FF_BUG_UMP4 = 8; + FF_BUG_NO_PADDING = 16; + FF_BUG_AMV = 32; + FF_BUG_AC_VLC = 0; ///< will be removed, libavcodec can now handle these non compliant files by default + FF_BUG_QPEL_CHROMA = 64; + FF_BUG_STD_QPEL = 128; + FF_BUG_QPEL_CHROMA2 = 256; + FF_BUG_DIRECT_BLOCKSIZE = 512; + FF_BUG_EDGE = 1024; + FF_BUG_HPEL_CHROMA = 2048; + FF_BUG_DC_CLIP = 4096; + FF_BUG_MS = 8192; ///< workaround various bugs in microsofts broken decoders + FF_BUG_TRUNCATED = 16384; + //FF_BUG_FAKE_SCALABILITY = 16 //Autodetection should work 100%. + + FF_COMPLIANCE_VERY_STRICT = 2; ///< strictly conform to an older more strict version of the spec or reference software + FF_COMPLIANCE_STRICT = 1; ///< strictly conform to all the things in the spec no matter what consequences + FF_COMPLIANCE_NORMAL = 0; +{$IF FF_API_INOFFICIAL} + FF_COMPLIANCE_INOFFICIAL = -1; ///< Allow inofficial extensions +{$IFEND} + FF_COMPLIANCE_UNOFFICIAL = -1; ///< Allow unofficial extensions + FF_COMPLIANCE_EXPERIMENTAL = -2; ///< Allow nonstandardized experimental things. + + FF_ER_CAREFUL = 1; + FF_ER_COMPLIANT = 2; + FF_ER_AGGRESSIVE = 3; + FF_ER_VERY_AGGRESSIVE = 4; + + FF_DCT_AUTO = 0; + FF_DCT_FASTINT = 1; + FF_DCT_INT = 2; + FF_DCT_MMX = 3; + FF_DCT_MLIB = 4; + FF_DCT_ALTIVEC = 5; + FF_DCT_FAAN = 6; + + FF_IDCT_AUTO = 0; + FF_IDCT_INT = 1; + FF_IDCT_SIMPLE = 2; + FF_IDCT_SIMPLEMMX = 3; + FF_IDCT_LIBMPEG2MMX = 4; + FF_IDCT_PS2 = 5; + FF_IDCT_MLIB = 6; + FF_IDCT_ARM = 7; + FF_IDCT_ALTIVEC = 8; + FF_IDCT_SH4 = 9; + FF_IDCT_SIMPLEARM = 10; + FF_IDCT_H264 = 11; + FF_IDCT_VP3 = 12; + FF_IDCT_IPP = 13; + FF_IDCT_XVIDMMX = 14; + FF_IDCT_CAVS = 15; + FF_IDCT_SIMPLEARMV5TE= 16; + FF_IDCT_SIMPLEARMV6 = 17; + FF_IDCT_SIMPLEVIS = 18; + FF_IDCT_WMV2 = 19; + FF_IDCT_FAAN = 20; + FF_IDCT_EA = 21; + FF_IDCT_SIMPLENEON = 22; + FF_IDCT_SIMPLEALPHA = 23; + FF_IDCT_BINK = 24; + + FF_EC_GUESS_MVS = 1; + FF_EC_DEBLOCK = 2; + +{$IF FF_API_MM_FLAGS} + FF_MM_FORCE = AV_CPU_FLAG_FORCE; + FF_MM_MMX = AV_CPU_FLAG_MMX; + FF_MM_3DNOW = AV_CPU_FLAG_3DNOW; + FF_MM_MMXEXT = AV_CPU_FLAG_MMX2; + FF_MM_MMX2 = AV_CPU_FLAG_MMX2; + FF_MM_SSE = AV_CPU_FLAG_SSE; + FF_MM_SSE2 = AV_CPU_FLAG_SSE2; + FF_MM_SSE2SLOW = AV_CPU_FLAG_SSE2SLOW; + FF_MM_3DNOWEXT = AV_CPU_FLAG_3DNOWEXT; + FF_MM_SSE3 = AV_CPU_FLAG_SSE3; + FF_MM_SSE3SLOW = AV_CPU_FLAG_SSE3SLOW; + FF_MM_SSSE3 = AV_CPU_FLAG_SSSE3; + FF_MM_SSE4 = AV_CPU_FLAG_SSE4; + FF_MM_SSE42 = AV_CPU_FLAG_SSE42; + FF_MM_IWMMXT = AV_CPU_FLAG_IWMMXT; + FF_MM_ALTIVEC = AV_CPU_FLAG_ALTIVEC; +{$IFEND} + + 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_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 = $0004; ///< allow draw_horiz_band() with 1 component at a time (SVQ1) + + FF_MB_DECISION_SIMPLE = 0; ///< uses mb_cmp + FF_MB_DECISION_BITS = 1; ///< chooses the one which needs the fewest bits + FF_MB_DECISION_RD = 2; ///< rate distortion + +{$IF FF_API_ANTIALIAS_ALGO} + FF_AA_AUTO = 0; + FF_AA_FASTINT = 1; //not implemented yet + FF_AA_INT = 2; + FF_AA_FLOAT = 3; +{$IFEND} + + FF_PROFILE_UNKNOWN = -99; + FF_PROFILE_RESERVED = -100; + + FF_PROFILE_AAC_MAIN = 0; + FF_PROFILE_AAC_LOW = 1; + FF_PROFILE_AAC_SSR = 2; + FF_PROFILE_AAC_LTP = 3; + + FF_PROFILE_DTS = 20; + FF_PROFILE_DTS_ES = 30; + FF_PROFILE_DTS_96_24 = 40; + FF_PROFILE_DTS_HD_HRA = 50; + FF_PROFILE_DTS_HD_MA = 60; + FF_PROFILE_MPEG2_422 = 0; + FF_PROFILE_MPEG2_HIGH = 1; + FF_PROFILE_MPEG2_SS = 2; + FF_PROFILE_MPEG2_SNR_SCALABLE = 3; + FF_PROFILE_MPEG2_MAIN = 4; + FF_PROFILE_MPEG2_SIMPLE= 5; + FF_PROFILE_H264_CONSTRAINED = (1<<9); // 8+1; constraint_set1_flag + FF_PROFILE_H264_INTRA = (1<<11); // 8+3; constraint_set3_flag + FF_PROFILE_H264_BASELINE = 66; + FF_PROFILE_H264_CONSTRAINED_BASELINE = (66 or FF_PROFILE_H264_CONSTRAINED); + FF_PROFILE_H264_MAIN = 77; + FF_PROFILE_H264_EXTENDED = 88; + FF_PROFILE_H264_HIGH = 100; + FF_PROFILE_H264_HIGH_10 = 110; + FF_PROFILE_H264_HIGH_10_INTRA = (110 or FF_PROFILE_H264_INTRA); + FF_PROFILE_H264_HIGH_422 = 122; + FF_PROFILE_H264_HIGH_422_INTRA = (122 or FF_PROFILE_H264_INTRA); + FF_PROFILE_H264_HIGH_444 = 144; + FF_PROFILE_H264_HIGH_444_PREDICTIVE = 244; + FF_PROFILE_H264_HIGH_444_INTRA = (244 or FF_PROFILE_H264_INTRA); + FF_PROFILE_H264_CAVLC_444 = 44; + FF_PROFILE_VC1_SIMPLE = 0; + FF_PROFILE_VC1_MAIN = 1; + FF_PROFILE_VC1_COMPLEX = 2; + FF_PROFILE_VC1_ADVANCED = 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; + + FF_THREAD_FRAME = 1; //< Decode more than one frame at once + FF_THREAD_SLICE = 2; //< Decode more than one part of a single frame at once + + AVPALETTE_SIZE = 1024; + AVPALETTE_COUNT = 256; + +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 has no meaning if the packet does not have AV_PKT_FLAG_KEY + * set. + * + * 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; {TAVPacket} + +const + AV_PKT_FLAG_KEY = $0001; +{$IF LIBAVCODEC_VERSION_MAJOR < 53} + PKT_FLAG_KEY = AV_PKT_FLAG_KEY; +{$IFEND} + +type + PAVCodecContext = ^TAVCodecContext; + + (** + * 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 + (** + * 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: TAVPictureType; + (** + * 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; + + (** + * reordered opaque 64bit number (generally a PTS) from AVCodecContext.reordered_opaque + * PTS but can be anything). + * The user sets AVCodecContext.reordered_opaque to represent the input at + * that time, + * the decoder reorders values as needed and sets AVFrame.reordered_opaque + * to exactly one of the values provided by the user through AVCodecContext.reordered_opaque + * @deprecated in favor of pkt_pts + * - encoding: unused + * - decoding: Read by user. + *) + reordered_opaque: cint64; + + (** + * hardware accelerator private data (FFmpeg allocated) + * - encoding: unused + * - decoding: Set by libavcodec + *) + hwaccel_picture_private: pointer; + + (** + * reordered pts from the last AVPacket that has been input into the decoder + * - encoding: unused + * - decoding: Read by user. + *) + pkt_pts: cint64; + + (** + * dts from the last AVPacket that has been input into the decoder + * - encoding: unused + * - decoding: Read by user. + *) + pkt_dts: cint64; + + (** + * the AVCodecContext which ff_thread_get_buffer() was last called on + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. + *) + owner: PAVCodecContext; + + (** + * used by multithreading to store frame-specific info + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. + *) + thread_opaque: pointer; + + (** + * frame timestamp estimated using various heuristics, in stream time base + * - encoding: unused + * - decoding: set by libavcodec, read by user. + *) + best_effort_timestamp: cint64; + + (** + * reordered pos from the last AVPacket that has been input into the decoder + * - encoding: unused + * - decoding: Read by user. + *) + pkt_pos: cint64; + + (** + * reordered sample aspect ratio for the video frame, 0/1 if unknown\unspecified + * - encoding: unused + * - decoding: Read by user. + *) + sample_aspect_ratio: TAVRational; + + (** + * width and height of the video frame + * - encoding: unused + * - decoding: Read by user. + *) + width, height: cint; + + (** + * format of the frame, -1 if unknown or unset + * It should be cast to the corresponding enum (enum PixelFormat + * for video, enum AVSampleFormat for audio) + * - encoding: unused + * - decoding: Read by user. + *) + format: cint; + end; {TAVFrame} + + PAVClass = ^TAVClass; + + PAVCodec = ^TAVCodec; + + PAVHWAccel = ^TAVHWAccel; + + // 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; + // int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr) + TExecute2Func = function(c2: PAVCodecContext; arg: Pointer; jobnr: cint; threadnr: cint): cint; cdecl; + +{$IF FF_API_PALETTE_CONTROL} +(** + * 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} + + (** + * 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. + * May be set by the demuxer if known from headers. + * May be overriden by the decoder if it knows better. + * - encoding: Set by user. + * - decoding: Set by user if known, overridden by libavcodec if known + *) + pix_fmt: TAVPixelFormat; + +{$IF FF_API_RATE_EMU} + (** + * 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; +{$IFEND} + + (** + * If non NULL, 'draw_horiz_band' is called by the libavcodec + * decoder to draw a horizontal band. It improves cache usage. Not + * all codecs can do that. You must check the codec capabilities + * beforehand. + * The function is also used by hardware acceleration APIs. + * It is called at least once during frame decoding to pass + * the data needed for hardware render. + * In that mode instead of pixel data, AVFrame points to + * a structure specific to the acceleration API. The application + * reads the structure and can change some fields to indicate progress + * or mark state. + * - encoding: unused + * - decoding: Set by user. + * @param height the height of the slice + * @param y the y position of the slice + * @param type 1->top field, 2->bottom field, 3->frame + * @param offset offset into the AVFrame.data from which the slice should be read + *) + draw_horiz_band: procedure (s: PAVCodecContext; + src: {const} PAVFrame; offset: PQuadIntArray; + y: cint; type_: cint; height: cint); cdecl; + + (* audio only *) + sample_rate: cint; ///< samples per second + channels: cint; ///< number of audio channels + + (** + * audio sample format + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + sample_fmt: TAVSampleFormat; ///< sample format + + (* The following data should not be initialized. *) + (** + * Samples per packet, initialized when calling 'init'. + *) + frame_size: cint; + frame_number: cint; ///< audio or video frame number +{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} + real_pict_num: cint; ///< returns the real picture number of previous encoded frame +{$IFEND} + + (** + * Number of frames the decoded output will be delayed relative to + * the encoded input. + * - encoding: Set by libavcodec. + * - decoding: unused + *) + delay: cint; + + (* - encoding parameters *) + qcompress: cfloat; ///< amount of qscale change between easy & hard scenes (0.0-1.0) + qblur: cfloat; ///< amount of qscale smoothing over time (0.0-1.0) + + (** + * minimum quantizer + * - encoding: Set by user. + * - decoding: unused + *) + qmin: cint; + + (** + * maximum quantizer + * - encoding: Set by user. + * - decoding: unused + *) + qmax: cint; + + (** + * maximum quantizer difference between frames + * - encoding: Set by user. + * - decoding: unused + *) + max_qdiff: cint; + + (** + * maximum number of B-frames between non-B-frames + * Note: The output will be delayed by max_b_frames+1 relative to the input. + * - encoding: Set by user. + * - decoding: unused + *) + max_b_frames: cint; + + (** + * qscale factor between IP and B-frames + * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset). + * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). + * - encoding: Set by user. + * - decoding: unused + *) + b_quant_factor: cfloat; + + (** obsolete FIXME remove *) + rc_strategy: cint; + + b_frame_strategy: cint; + +{$IF FF_API_HURRY_UP} + (** + * 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; +{$IFEND} + + codec: PAVCodec; + + priv_data: pointer; + + 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; + codec_type: TAVMediaType; (* see AVMEDIA_TYPE_xxx *) + 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, whereas setting it to unofficial or lower + * will mean the encoder might produce output that is not supported by all + * spec-compliant decoders. Decoders don't differentiate between normal, + * unofficial and experimental (that is, they always try to decode things + * when they can) unless they are explicitly asked to behave stupidly + * (=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: PAnsiChar; + + (** + * 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: PAnsiChar; + + (** + * 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} PAnsiChar; + + (** + * 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; + + (** + * 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; + +{$IF FF_API_MB_Q} + (** + * minimum MB quantizer + * - encoding: unused + * - decoding: unused + *) + mb_qmin: cint; {deprecated} + + (** + * maximum MB quantizer + * - encoding: unused + * - decoding: unused + *) + mb_qmax: cint; {deprecated} +{$IFEND} + + (** + * 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; + +{$IF FF_API_PALETTE_CONTROL} + (** + * palette control structure + * - encoding: ??? (no palette-enabled encoder yet) + * - decoding: Set by user. + *) + palctrl: PAVPaletteControl; +{$IFEND} + + (** + * noise reduction strength + * - encoding: Set by user. + * - decoding: unused + *) + noise_reduction: cint; + + (** + * Called at the beginning of a frame to get cr buffer for it. + * Buffer type (size, hints) must be the same. libavcodec won't check it. + * libavcodec will pass previous buffer in pic, function should return + * same buffer or new buffer with old frame "painted" into it. + * If pic.data[0] == NULL must behave like get_buffer(). + * if CODEC_CAP_DR1 is not set then reget_buffer() must call + * avcodec_default_reget_buffer() instead of providing buffers allocated by + * some other means. + * - encoding: unused + * - decoding: Set by libavcodec, user can override + *) + reget_buffer: function (c: PAVCodecContext; pic: PAVFrame): cint; cdecl; + + (** + * Number of bits which should be loaded into the rc buffer before decoding starts. + * - encoding: Set by user. + * - decoding: unused + *) + rc_initial_buffer_occupancy: cint; + + (** + * + * - encoding: Set by user. + * - decoding: unused + *) + inter_threshold: cint; + + (** + * CODEC_FLAG2_* + * - encoding: Set by user. + * - decoding: Set by user. + *) + flags2: cint; + + (** + * Simulates errors in the bitstream to test error concealment. + * - encoding: Set by user. + * - decoding: unused + *) + error_rate: cint; + +{$IF FF_API_ANTIALIAS_ALGO} + (** + * MP3 antialias algorithm, see FF_AA_* below. + * - encoding: unused + * - decoding: Set by user. + *) + antialias_algo: cint; {deprecated} +{$IFEND} + + (** + * 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. + *) + execute: function (c: PAVCodecContext; func: TExecuteFunc; arg: Pointer; ret: PCint; count: cint; size: cint): cint; cdecl; + + (** + * 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 + *) + crf: cfloat; + + (** + * 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; + +{$IF FF_API_USE_LPC} + (** + * Sets whether to use LPC mode - used by FLAC encoder. + * - encoding: Set by user. + * - decoding: unused + * @deprecated Deprecated in favor of lpc_type and lpc_passes. + *) + use_lpc: cint; + + (** + * LPC coefficient precision - used by FLAC encoder + * - encoding: Set by user. + * - decoding: unused + *) + lpc_coeff_precision: cint; +{$IFEND} + + (** + * - encoding: Set by user. + * - decoding: unused + *) + min_prediction_order: cint; + + (** + * - encoding: Set by user. + * - decoding: unused + *) + max_prediction_order: cint; + +{$IF FF_API_FLAC_GLOBAL_OPTS} + (** + * search method for selecting prediction order + * - encoding: Set by user. + * - decoding: unused + *) + prediction_order_method: cint; {deprecated} + + (** + * - encoding: Set by user. + * - decoding: unused + *) + min_partition_order: cint; {deprecated} + + (** + * - encoding: Set by user. + * - decoding: unused + *) + max_partition_order: cint; {deprecated} +{$IFEND} + + (** + * GOP timecode frame start number, in non drop frame format + * - encoding: Set by user. + * - decoding: unused + *) + timecode_frame_start: cint64; + +{$IF FF_API_REQUEST_CHANNELS} + (** + * 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} + + (** + * 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; + + (** + * 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; + + (** + * 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; + + (** + * 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; + + (** + * 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; + + (** + * Hardware accelerator in use + * - encoding: unused. + * - decoding: Set by libavcodec + *) + hwaccel: PAVHWAccel; + + (** + * 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; + + (** + * 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; + + (** + * 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; + + (** + * 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; + + (** + * 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; + + (** + * 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; + + (** + * 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; + + log_level_offset: cint; + +{$IF FF_API_FLAC_GLOBAL_OPTS} + (** + * Determines which LPC analysis algorithm to use. + * - encoding: Set by user + * - decoding: unused + *) + lpc_type: TAVLPCType; {deprecated} + + (** + * Number of passes to use for Cholesky factorization during LPC analysis + * - encoding: Set by user + * - decoding: unused + *) + lpc_passes: cint; {deprecated} +{$IFEND} + + (** + * Number of slices. + * Indicates number of picture subdivisions. Used for parallelized + * decoding. + * - encoding: Set by user + * - decoding: unused + *) + slices: cint; + + (** + * Header containing style information for text subtitles. + * For SUBTITLE_ASS subtitle type, it should contain the whole ASS + * [Script Info] and [V4+ Styles] section, plus the [Events] line and + * the Format line following. It shouldn't include any Dialogue line. + * - encoding: Set/allocated/freed by user (before avcodec_open()) + * - decoding: Set/allocated/freed by libavcodec (by avcodec_open()) + *) + subtitle_header: Pcuint8; + subtitle_header_size: cint; + + (** + * Current packet as passed into the decoder, to avoid having + * to pass the packet into every function. Currently only valid + * inside lavc and get/release_buffer callbacks. + * - decoding: set by avcodec_decode_*, read by get_buffer() for setting pkt_pts + * - encoding: unused + *) + pkt: PAVPacket; + + (** + * Whether this is a copy of the context which had init() called on it. + * This is used by multithreading - shared tables and picture pointers + * should be freed from the original context only. + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. + *) + is_copy: cint; + + (** + * Which multithreading methods to use. + * Use of FF_THREAD_FRAME will increase decoding delay by one frame per thread, + * so clients which cannot provide future frames should not use it. + * + * - encoding: Set by user, otherwise the default is used. + * - decoding: Set by user, otherwise the default is used. + *) + thread_type: cint; + + (** + * Which multithreading methods are in use by the codec. + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. + *) + active_thread_type: cint; + + (** + * Set by the client if its custom get_buffer() callback can be called + * from another thread, which allows faster multithreaded decoding. + * draw_horiz_band() will be called from other threads regardless of this setting. + * Ignored if the default get_buffer() is used. + * - encoding: Set by user. + * - decoding: Set by user. + *) + thread_safe_callbacks: cint; + + (** + * VBV delay coded in the last frame (in periods of a 27 MHz clock). + * Used for compliant TS muxing. + * - encoding: Set by libavcodec. + * - decoding: unused. + *) + vbv_delay: cuint64; + + (** + * Type of service that the audio stream conveys. + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + audio_service_type: TAVAudioServiceType; + + (** + * desired sample format + * - encoding: Not used. + * - decoding: Set by user. + * Decoder will decode to this format if it can. + *) + request_sample_fmt: TAVSampleFormat; + + (** + * Current statistics for PTS correction. + * - decoding: maintained and used by libavcodec, not intended to be used by user apps + * - encoding: unused + *) + pts_correction_num_faulty_pts: cint64; /// Number of incorrect PTS values so far + pts_correction_num_faulty_dts: cint64; /// Number of incorrect DTS values so far + pts_correction_last_pts: cint64; /// PTS of the last frame + pts_correction_last_dts: cint64; /// DTS of the last frame + + end; {TAVCodecContext} + + (** + * AVProfile. + *) + PAVProfile = ^TAVProfile; + TAVProfile = record + profile: cint; + name: {const} PAnsiChar; ///< short name for the profile + end; {TAVProfile} + +(** + * AVCodec. + *) + TAVCodec = record + name: PAnsiChar; + type_: TAVMediaType; + id: TCodecID; + priv_data_size: cint; + init: function (avctx: PAVCodecContext): cint; cdecl; + 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; avpkt: PAVPacket): cint; cdecl; + (** + * 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 + (** + * 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; + supported_samplerates: {const} PCint; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0 + sample_fmts: {const} PAVSampleFormatArray; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1 + channel_layouts: {const} PCint64; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0 + max_lowres: byte; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0 + priv_class: {const} PAVClass; ///< AVClass for the private context + profiles: {const} PAVProfile; ///< array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN} + + (** + * @defgroup framethreading Frame-level threading support functions. + * @{ + *) + (** + * If defined, called on thread contexts when they are created. + * If the codec allocates writable tables in init(), re-allocate them here. + * priv_data will be set to a copy of the original. + *) + init_thread_copy: function (avctx: PAVCodecContext): Pcint; cdecl; + (** + * Copy necessary context variables from a previous thread context to the current one. + * If not defined, the next thread will start automatically; otherwise, the codec + * must call ff_thread_finish_setup(). + * + * dst and src will (rarely) point to the same context, in which case memcpy should be skipped. + *) + update_thread_context: function (dst: PAVCodecContext; src: {const} PAVCodecContext): cint; cdecl; + (** @} *) + end; {TAVCodec} + +(** + * 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; + + (** + * Type of codec implemented by the hardware accelerator. + * + * See AVMediaType_xxx + *) + type_: TAVMediaType; + + (** + * Codec implemented by the hardware accelerator. + * + * See CODEC_ID_xxx + *) + id: TCodecID; + + (** + * Supported pixel format. + * + * Only hardware accelerated formats are supported here. + *) + pix_fmt: PAVPixelFormat; + + (** + * Hardware accelerated codec capabilities. + * see FF_HWACCEL_CODEC_CAP_* + *) + capabilities: cint; + + next: PAVHWAccel; + + (** + * 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: {const} PByteArray; + buf_size: cuint): 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: {const} PByteArray; + buf_size: cuint): 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; + + (** + * 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; + end; {TAVHWAccel} + +(** + * 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; {TAVPicture} + + 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 + ); {TAVSubtitleType} + + PPAVSubtitleRect = ^PAVSubtitleRect; + PAVSubtitleRect = ^TAVSubtitleRect; + 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: PAnsiChar; + end; {TAVSubtitleRect} + + 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; + rects: PPAVSubtitleRect; + pts: cint64; ///< Same as packet pts, in AV_TIME_BASE + end; {TAVSubtitle} + +(* packet functions *) + +(** + * @deprecated use NULL instead + *) +procedure av_destruct_packet_nofree(pkt: PAVPacket); + cdecl; external av__codec; deprecated; + +(* + * 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); + cdecl; external av__codec; + +(* resample.c *) +type + PReSampleContext = pointer; + PAVResampleContext = pointer; + PImgReSampleContext = pointer; + +{$IF FF_API_AUDIO_OLD} +(** + * @deprecated Use av_audio_resample_init() instead. + *) +function audio_resample_init (output_channels: cint; input_channels: cint; + output_rate: cint; input_rate: cint): PReSampleContext; + cdecl; external av__codec; deprecated; +{$IFEND} + +(** + * Initialize audio resampling context. + * + * @param output_channels number of output channels + * @param input_channels number of input channels + * @param output_rate output sample rate + * @param input_rate input sample rate + * @param sample_fmt_out requested output sample format + * @param sample_fmt_in input sample format + * @param filter_length length of each FIR filter in the filterbank relative to the cutoff frequency + * @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 + * @return allocated ReSampleContext, NULL if error occured + *) + function av_audio_resample_init(output_channels: cint; input_channels: cint; + output_rate: cint; input_rate: cint; + sample_fmt_out: TAVSampleFormat; + sample_fmt_in: TAVSampleFormat; + filter_length: cint; log2_phase_count: cint; + linear: cint; cutoff: cdouble): PReSampleContext; + cdecl; external av__codec; + +function audio_resample (s: PReSampleContext; output: PSmallint; input: PSmallint; nb_samples: cint): cint; + cdecl; external av__codec; + +(** + * Free resample context. + * + * @param s a non-NULL pointer to a resample context previously + * created with av_audio_resample_init() + *) +procedure audio_resample_close (s: PReSampleContext); + cdecl; external av__codec; + +(** + * Initialize 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; + +(** + * Resample an array of samples using a previously configured context. + * @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; + +(** + * Compensate 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; + +(** + * 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: pcuint8; + pix_fmt: TAVPixelFormat; width: cint; height: cint): cint; + cdecl; external av__codec; + +(** + * Copy pixel data from an AVPicture into a buffer. + * The data is stored compactly, without any gaps for alignment or padding + * which may be applied by avpicture_fill(). + * + * \see avpicture_get_size() + * + * @param[in] src AVPicture containing image data + * @param[in] pix_fmt The format in which the picture data is stored. + * @param[in] width the width of the image in pixels. + * @param[in] height the height of the image in pixels. + * @param[out] dest A buffer into which picture data will be copied. + * @param[in] dest_size The size of 'dest'. + * @return The number of bytes written to dest, or a negative value (error code) on error. + *) +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; + +{$IF FF_API_GET_PIX_FMT_NAME} +(** + * Return the short name for a pixel format. + * + * \see av_get_pix_fmt(), av_get_pix_fmt_string(). + * @deprecated Deprecated in favor of av_get_pix_fmt_name(). + *) +function avcodec_get_pix_fmt_name(pix_fmt: TAVPixelFormat): PAnsiChar; + cdecl; external av__codec; deprecated; +{$IFEND} + +procedure avcodec_set_dimensions(s: PAVCodecContext; width: cint; height: cint); + cdecl; external av__codec; + +{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} +(** + * Return 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; deprecated; +{$IFEND} + +(** + * Return 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; + +(** + * Put a string representing the codec tag codec_tag in buf. + * + * @param buf_size size in bytes of buf + * @return the length of the string that would have been generated if + * enough space had been available, excluding the trailing null + *) +function av_get_codec_tag_string(buf: PAnsiChar; buf_size: size_t; codec_tag: cuint): size_t; + 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) *} + +(** + * Compute 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; + +(** + * Find 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. + *) +function avcodec_find_best_pix_fmt(pix_fmt_mask: cint64; src_pix_fmt: TAVPixelFormat; + has_alpha: cint; loss_ptr: PCint): TAVPixelFormat; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION_MAJOR < 53} +(** + * @deprecated Use av_get_pix_fmt_string() instead. + *) +procedure avcodec_pix_fmt_string (buf: PAnsiChar; buf_size: cint; pix_fmt: TAVPixelFormat); + cdecl; external av__codec; deprecated; +{$IFEND} + +const + FF_ALPHA_TRANSP = $0001; {* image has some totally transparent pixels *} + FF_ALPHA_SEMI_TRANSP = $0002; {* image has some transparent pixels *} + +(** + * Tell if an image really has transparent alpha values. + * @return ored mask of FF_ALPHA_xxx constants + *) +function img_get_alpha_info (src: {const} PAVPicture; + pix_fmt: TAVPixelFormat; + width: cint; + height: cint): cint; + cdecl; external av__codec; + +(* deinterlace a picture *) +(* deinterlace - if not supported return -1 *) +function avpicture_deinterlace (dst: PAVPicture; + src: {const} PAVPicture; + pix_fmt: TAVPixelFormat; + width: cint; + height: cint): cint; + cdecl; external av__codec; + +(* external high level API *) + +(** + * If c is NULL, returns the first registered codec, + * if c is non-NULL, returns the next registered codec after c, + * or NULL if c is the last one. + *) +function av_codec_next(c: PAVCodec): PAVCodec; + cdecl; external av__codec; + +(** + * Return the LIBAVCODEC_VERSION_INT constant. + *) +function avcodec_version(): cuint; + cdecl; external av__codec; + +(** + * Return the libavcodec build-time configuration. + *) +function avcodec_configuration(): PAnsiChar; + cdecl; external av__codec; + +(** + * Return the libavcodec license. + *) +function avcodec_license(): PAnsiChar; + cdecl; external av__codec; + +(** + * Initialize libavcodec. + * + * @warning This function must be called before any other libavcodec + * function. + * + * @warning This function is not thread-safe. + *) +procedure avcodec_init(); + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION_MAJOR < 53} +(** + * @deprecated Deprecated in favor of avcodec_register(). + *) +procedure register_avcodec(codec: PAVCodec); + cdecl; external av__codec; deprecated; +{$IFEND} + +(** + * Register the codec codec and initialize libavcodec. + * + * @see avcodec_init(), avcodec_register_all() + *) +procedure avcodec_register(codec: PAVCodec); + cdecl; external av__codec; + +(** + * Find 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; + +(** + * Find 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; + +(** + * Find 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; + +(** + * Find 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; + +(** + * Return a name for the specified profile, if available. + * + * @param codec the codec that is searched for the given profile + * @param profile the profile value for which a name is requested + * @return A name for the profile if found, NULL otherwise. + *) +function av_get_profile_name(codec: {const} PAVCodec; profile: cint): {const} PAnsiChar; + cdecl; external av__codec; + +(** + * Set 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; + +(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! + * we WILL change its arguments and name a few times! *) +procedure avcodec_get_context_defaults2(s: PAVCodecContext; ctype: TAVMediaType); + cdecl; external av__codec; + +(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! + * we WILL change its arguments and name a few times! *) +procedure avcodec_get_context_defaults3(s: PAVCodecContext; codec: PAVCodec); + cdecl; external av__codec; + +(** + * Allocate an AVCodecContext and sets it 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; + +(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! + * we WILL change its arguments and name a few times! *) +function avcodec_alloc_context2(ctype: TAVMediaType): PAVCodecContext; + cdecl; external av__codec; + +(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! + * we WILL change its arguments and name a few times! *) +function avcodec_alloc_context3(codec: PAVCodec): PAVCodecContext; + cdecl; external av__codec; + +(** + * 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; + +(** + * Set 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; + +(** + * Allocate an AVFrame and set 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; + +(** + * Return 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; + +(** + * Modify 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. + * + * May only be used if a codec with CODEC_CAP_DR1 has been opened. + * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased + * according to avcodec_get_edge_width() before. + *) +procedure avcodec_align_dimensions(s: PAVCodecContext; width: PCint; height: PCint); + cdecl; external av__codec; + +(** + * Modifiy 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]. + * + * May only be used if a codec with CODEC_CAP_DR1 has been opened. + * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased + * according to avcodec_get_edge_width() before. + *) +procedure avcodec_align_dimensions2(s: PAVCodecContext; width: PCint; height: PCint; + linesize_align: PQuadIntArray); + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION_MAJOR < 53} +(** + * @deprecated Deprecated in favor of av_check_image_size(). + *) +function avcodec_check_dimensions(av_log_ctx: pointer; w: cuint; h: cuint): cint; + cdecl; external av__codec; deprecated; +{$IFEND} + +function avcodec_default_get_format(s: PAVCodecContext; fmt: {const} PAVPixelFormat): TAVPixelFormat; + cdecl; external av__codec; + +{$IF FF_API_THREAD_INIT} +(** + * @deprecated Set s->thread_count before calling avcodec_open() instead of calling this. + *) +function avcodec_thread_init(s: PAVCodecContext; thread_count: cint): cint; + cdecl; external av__codec; deprecated; +procedure avcodec_thread_free(s: PAVCodecContext); + cdecl; external av__codec; deprecated; +{$IFEND} + +function avcodec_default_execute(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint; size: cint): cint; + cdecl; external av__codec; + +function avcodec_default_execute2(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint): cint; + cdecl; external av__codec; +//FIXME func typedef + +(** + * Initialize the AVCodecContext to use the given AVCodec. Prior to using this + * function the context has to be allocated. + * + * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(), + * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for + * retrieving a codec. + * + * @warning This function is not thread safe! + * + * @code + * avcodec_register_all(); + * codec = avcodec_find_decoder(CODEC_ID_H264); + * if (!codec) + * exit(1); + * + * context = avcodec_alloc_context(); + * + * if (avcodec_open(context, codec) < 0) + * exit(1); + * @endcode + * + * @param avctx The context which will be set up to use the given codec. + * @param codec The codec to use within the context. + * @return zero on success, a negative value on error + * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder + *) +function avcodec_open(avctx: PAVCodecContext; codec: PAVCodec): cint; + cdecl; external av__codec; + + +{$IF FF_API_AUDIO_OLD} +(** + * Decode 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} + +(** + * Decode 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; + +{$IF FF_API_VIDEO_OLD} +(** + * Decode 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. + * with default get/release_buffer(), the decoder frees/reuses the bitmap as it sees fit. + * with overridden get/release_buffer() (needs CODEC_CAP_DR1) the user decides into what buffer the decoder + * decodes and the decoder tells the user once it does not need the data anymore, + * the user app can at this point free/reuse/keep the memory as it sees fit. + * + * @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; +{$IFEND} + +(** + * Decode the video frame of size avpkt->size from avpkt->data into picture. + * Some decoders may support multiple frames in a single AVPacket, such + * decoders would then just decode the first frame. + * + * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than + * the actual read bytes because some optimized bitstream readers read 32 or 64 + * bits at once and could read over the end. + * + * @warning The end of the input buffer buf should be set to 0 to ensure that + * no overreading happens for damaged MPEG streams. + * + * @note You might have to align the input buffer avpkt->data. + * The alignment requirements depend on the CPU: on some CPUs it isn't + * necessary at all, on others it won't work at all if not aligned and on others + * it will work but it will have an impact on performance. + * + * In practice, avpkt->data should have 4 byte alignment at minimum. + * + * @param avctx the codec context + * @param[out] picture The AVFrame in which the decoded video frame will be stored. + * @param[in] avpkt The input AVpacket containing the input buffer. + * You can create such packet with av_init_packet() and by then setting + * data and size, some decoders might in addition need other fields like + * flags&AV_PKT_FLAG_KEY. All decoders are designed to use the least + * fields possible. + * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero. + * @return On error a negative value is returned, otherwise the number of bytes + * used or zero if no frame could be decompressed. + *) +function avcodec_decode_video2(avctx: PAVCodecContext; picture: PAVFrame; + var got_picture_ptr: cint; + avpkt: PAVPacket): cint; + cdecl; external av__codec; + +{$IF FF_API_SUBTITLE_OLD} +(* 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; deprecated; +{$IFEND} + +(* Decode a subtitle message. + * Return a negative value on 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. + * Note that CODEC_CAP_DR1 is not available for subtitle codecs. This is for + * simplicity, because the performance difference is expect to be negligible + * and reusing a get_buffer written for video codecs would probably perform badly + * due to a potentially very different allocation pattern. + * + * @param avctx the codec context + * @param[out] sub The AVSubtitle in which the decoded subtitle will be stored, must be + freed with avsubtitle_free if *got_sub_ptr is set. + * @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; + +(** + * Frees all allocated data in the given subtitle struct. + * + * @param sub AVSubtitle to free. + *) +procedure avsubtitle_free(sub: PAVSubtitle); + cdecl; external av__codec; + +function avcodec_parse_frame(avctx: PAVCodecContext; pdata: PPointer; + data_size_ptr: PCint; + buf: PByteArray; buf_size: cint): cint; + cdecl; external av__codec; + +(** + * Encode 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; + +(** + * Encode 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: {const} 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 *) + +{$IF FF_API_OLD_FF_PICT_TYPES} +(** + * Return 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. + * @deprecated Use av_get_picture_type_char() instead. + *) +function av_get_pict_type_char(pict_type: cint): AnsiChar; + cdecl; external av__codec; deprecated; +{$IFEND} + +(** + * Return codec bits per sample. + * + * @param[in] codec_id the codec + * @return Number of bits per sample or zero if unknown for the given codec. + *) +function av_get_bits_per_sample(codec_id: TCodecID): cint; + cdecl; external av__codec; + +{$IF FF_API_OLD_SAMPLE_FMT} +(** + * @deprecated Use av_get_bits_per_sample_fmt() instead. + *) +function av_get_bits_per_sample_format(sample_fmt: TAVSampleFormat): cint; + cdecl; external av__codec; deprecated; +{$IFEND} + +const + AV_PARSER_PTS_NB = 4; + PARSER_FLAG_COMPLETE_FRAMES = $0001; + PARSER_FLAG_ONCE = $0002; +/// Set if the parser has a valid file offset + PARSER_FLAG_FETCHED_OFFSET = $0004; + +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; + + offset: cint64; ///< byte offset from starting packet start + cur_frame_end: array [0..AV_PARSER_PTS_NB - 1] of cint64; + + (*! + * 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; + + (** + * 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 has no meaning if the packet does not have AV_PKT_FLAG_KEY + * set. + * + * 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; + + // 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; + + (** + * 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; + end; {AVCodecParserContext} + + 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; {AVCodecParser} + +function av_parser_next(c: PAVCodecParser): PAVCodecParser; + cdecl; external av__codec; + +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} + +(** + * 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; + +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: {const} PAnsiChar; + poutbuf: PPointer; poutbuf_size: PCint; + buf: {const} PByte; buf_size: cint; keyframe: cint): cint; cdecl; + close: procedure(bsfc: PAVBitStreamFilterContext); + next: PAVBitStreamFilter; + end; + +procedure av_register_bitstream_filter(bsf: PAVBitStreamFilter); + cdecl; external av__codec; + +function av_bitstream_filter_init(name: {const} PAnsiChar): PAVBitStreamFilterContext; + cdecl; external av__codec; + +function av_bitstream_filter_filter(bsfc: PAVBitStreamFilterContext; + avctx: PAVCodecContext; args: {const} PAnsiChar; + poutbuf: PPointer; poutbuf_size: PCint; + buf: {const} PByte; buf_size: cint; keyframe: cint): cint; + cdecl; external av__codec; + +procedure av_bitstream_filter_close(bsf: PAVBitStreamFilterContext); + cdecl; external av__codec; + +function av_bitstream_filter_next(f: PAVBitStreamFilter): PAVBitStreamFilter; + cdecl; external av__codec; + +(* memory *) + +(** + * Reallocate the given block if it is not large enough, otherwise do nothing. + * + * @see av_realloc + *) +procedure av_fast_realloc(ptr: pointer; size: PCuint; min_size: FF_INTERNALC_MEM_TYPE); + cdecl; external av__codec; + +(** + * Allocate 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: FF_INTERNALC_MEM_TYPE); + cdecl; external av__codec; + +{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} +(** + * @deprecated Deprecated in favor of av_image_copy(). + *) +type + PQuaduint8Array = ^TQuaduint8Array; + TQuaduint8Array = array [0..3] of cuint8; + +procedure av_picture_data_copy(dst_data: PQuaduint8Array; dst_linesize: TQuadIntArray; + src_data: PQuaduint8Array; src_linesize: TQuadIntArray; + pix_fmt: TAVPixelFormat; width: cint; height: cint); + cdecl; external av__codec; deprecated; +{$IFEND} + +(** + * Copy image src to dst. Wraps av_picture_data_copy() above. + *) +procedure av_picture_copy(dst: PAVPicture; + src: {const} PAVPicture; + pix_fmt: TAVPixelFormat; + width: cint; + height: cint); + cdecl; external av__codec; + +(** + * Crop image top and left side. + *) +function av_picture_crop(dst: PAVPicture; + src: {const} PAVPicture; + pix_fmt: TAVPixelFormat; + top_band: cint; + left_band: cint): cint; + cdecl; external av__codec; + +(** + * Pad image. + *) +function av_picture_pad(dst: PAVPicture; + src: {const} PAVPicture; + height: cint; + width: cint; + pix_fmt: TAVPixelFormat; + padtop: cint; + padbottom: cint; + padleft: cint; + padright: + cint; + color: PCint): cint; + cdecl; external av__codec; + +(** + * Encode extradata length to a buffer. Used by xiph codecs. + * + * @param s buffer to write to; must be at least (v/255+1) bytes long + * @param v size of extradata in bytes + * @return number of bytes written to the buffer. + *) +function av_xiphlacing(s: PByte; v: cuint): cuint; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION_MAJOR < 53} +(** + * Parse str and put in width_ptr and height_ptr the detected values. + * + * @deprecated Deprecated in favor of av_parse_video_size(). + *) +function av_parse_video_frame_size(width_ptr: PCint; height_ptr: PCint; str: {const} PAnsiChar): cint; + cdecl; external av__codec; deprecated; + +(** + * Parse str and store the detected values in *frame_rate. + * + * @deprecated Deprecated in favor of av_parse_video_rate(). + *) +function av_parse_video_frame_rate(frame_rate: PAVRational; str: {const} PAnsiChar): cint; + cdecl; external av__codec; deprecated; +{$IFEND} + +(** + * Log 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} PAnsiChar; want_sample: cint); + cdecl; external av__codec; + +(** + * Log 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} PAnsiChar); + cdecl; external av__codec; + +(** + * Register 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; + +(** + * 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: Ppointer; op: TAVLockOp)): cint; +// cdecl; external av__codec; + +implementation + +end. |