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diff --git a/mediaplugin/src/lib/ffmpeg/avcodec.pas b/mediaplugin/src/lib/ffmpeg/avcodec.pas
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-(*
- * copyright (c) 2001 Fabrice Bellard
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * This is a part of Pascal porting of ffmpeg.
- * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows.
- * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT
- * in the source codes.
- * - Changes and updates by the UltraStar Deluxe Team
- *
- * Conversion of libavcodec/avcodec.h
- * Min. version: 51.16.0, revision 6577, Sat Oct 7 15:30:46 2006 UTC
- * Max. version: 52.86.1, revision 24882, Wed Aug 23 07:00:00 2010 CET
- *
- *)
-
-unit avcodec;
-
-{$IFDEF FPC}
- {$MODE DELPHI }
- {$PACKENUM 4} (* use 4-byte enums *)
- {$PACKRECORDS C} (* C/C++-compatible record packing *)
-{$ELSE}
- {$MINENUMSIZE 4} (* use 4-byte enums *)
-{$ENDIF}
-
-{$IFDEF DARWIN}
- {$linklib libavcodec}
-{$ENDIF}
-
-interface
-
-uses
- ctypes,
- avutil,
- rational,
- opt,
- SysUtils,
- {$IFDEF UNIX}
- BaseUnix,
- {$ENDIF}
- UConfig;
-
-const
- (*
- * IMPORTANT: The official FFmpeg C headers change very quickly. Often some
- * of the data structures are changed so that they become incompatible with
- * older header files. The Pascal headers have to be adjusted to those changes,
- * otherwise the application might crash randomly or strange bugs (not
- * necessarily related to video or audio due to buffer overflows etc.) might
- * occur.
- *
- * In the past users reported problems with USDX that took hours to fix and
- * the problem was an unsupported version of FFmpeg. So we decided to disable
- * support for future versions of FFmpeg until the headers are revised by us
- * for that version as they otherwise most probably will break USDX.
- *
- * If the headers do not yet support your FFmpeg version you may want to
- * adjust the max. version numbers manually but please note: it may work but
- * in many cases it does not. The USDX team does NOT PROVIDE ANY SUPPORT
- * for the game if the MAX. VERSION WAS CHANGED.
- *
- * The only safe way to support new versions of FFmpeg is to add the changes
- * of the FFmpeg git repository C headers to the Pascal headers.
- * You can accelerate this process by posting a patch with the git changes
- * translated to Pascal to our bug tracker (please join our IRC chat before
- * you start working on it). Simply adjusting the max. versions is NOT a valid
- * fix.
- *)
- (* Max. supported version by this header *)
- LIBAVCODEC_MAX_VERSION_MAJOR = 52;
- LIBAVCODEC_MAX_VERSION_MINOR = 86;
- LIBAVCODEC_MAX_VERSION_RELEASE = 1;
- LIBAVCODEC_MAX_VERSION = (LIBAVCODEC_MAX_VERSION_MAJOR * VERSION_MAJOR) +
- (LIBAVCODEC_MAX_VERSION_MINOR * VERSION_MINOR) +
- (LIBAVCODEC_MAX_VERSION_RELEASE * VERSION_RELEASE);
-
- (* Min. supported version by this header *)
- LIBAVCODEC_MIN_VERSION_MAJOR = 51;
- LIBAVCODEC_MIN_VERSION_MINOR = 16;
- LIBAVCODEC_MIN_VERSION_RELEASE = 0;
- LIBAVCODEC_MIN_VERSION = (LIBAVCODEC_MIN_VERSION_MAJOR * VERSION_MAJOR) +
- (LIBAVCODEC_MIN_VERSION_MINOR * VERSION_MINOR) +
- (LIBAVCODEC_MIN_VERSION_RELEASE * VERSION_RELEASE);
-
-(* Check if linked versions are supported *)
-{$IF (LIBAVCODEC_VERSION < LIBAVCODEC_MIN_VERSION)}
- {$MESSAGE Error 'Linked version of libavcodec is too old!'}
-{$IFEND}
-
-(* Check if linked version is supported *)
-{$IF (LIBAVCODEC_VERSION > LIBAVCODEC_MAX_VERSION)}
- {$MESSAGE Error 'Linked version of libavcodec is not yet supported!'}
-{$IFEND}
-
-const
- AV_NOPTS_VALUE: cint64 = $8000000000000000;
- AV_TIME_BASE = 1000000;
- AV_TIME_BASE_Q: TAVRational = (num: 1; den: AV_TIME_BASE);
-
-(**
- * Identify the syntax and semantics of the bitstream.
- * The principle is roughly:
- * Two decoders with the same ID can decode the same streams.
- * Two encoders with the same ID can encode compatible streams.
- * There may be slight deviations from the principle due to implementation
- * details.
- *
- * If you add a codec ID to this list, add it so that
- * 1. no value of a existing codec ID changes (that would break ABI),
- * 2. it is as close as possible to similar codecs.
- *)
-type
- TCodecID = (
- CODEC_ID_NONE,
-
- (* video codecs *)
- CODEC_ID_MPEG1VIDEO,
- CODEC_ID_MPEG2VIDEO, //* prefered ID for MPEG Video 1/2 decoding */
- CODEC_ID_MPEG2VIDEO_XVMC,
- CODEC_ID_H261,
- CODEC_ID_H263,
- CODEC_ID_RV10,
- CODEC_ID_RV20,
- CODEC_ID_MJPEG,
- CODEC_ID_MJPEGB,
- CODEC_ID_LJPEG,
- CODEC_ID_SP5X,
- CODEC_ID_JPEGLS,
- CODEC_ID_MPEG4,
- CODEC_ID_RAWVIDEO,
- CODEC_ID_MSMPEG4V1,
- CODEC_ID_MSMPEG4V2,
- CODEC_ID_MSMPEG4V3,
- CODEC_ID_WMV1,
- CODEC_ID_WMV2,
- CODEC_ID_H263P,
- CODEC_ID_H263I,
- CODEC_ID_FLV1,
- CODEC_ID_SVQ1,
- CODEC_ID_SVQ3,
- CODEC_ID_DVVIDEO,
- CODEC_ID_HUFFYUV,
- CODEC_ID_CYUV,
- CODEC_ID_H264,
- CODEC_ID_INDEO3,
- CODEC_ID_VP3,
- CODEC_ID_THEORA,
- CODEC_ID_ASV1,
- CODEC_ID_ASV2,
- CODEC_ID_FFV1,
- CODEC_ID_4XM,
- CODEC_ID_VCR1,
- CODEC_ID_CLJR,
- CODEC_ID_MDEC,
- CODEC_ID_ROQ,
- CODEC_ID_INTERPLAY_VIDEO,
- CODEC_ID_XAN_WC3,
- CODEC_ID_XAN_WC4,
- CODEC_ID_RPZA,
- CODEC_ID_CINEPAK,
- CODEC_ID_WS_VQA,
- CODEC_ID_MSRLE,
- CODEC_ID_MSVIDEO1,
- CODEC_ID_IDCIN,
- CODEC_ID_8BPS,
- CODEC_ID_SMC,
- CODEC_ID_FLIC,
- CODEC_ID_TRUEMOTION1,
- CODEC_ID_VMDVIDEO,
- CODEC_ID_MSZH,
- CODEC_ID_ZLIB,
- CODEC_ID_QTRLE,
- CODEC_ID_SNOW,
- CODEC_ID_TSCC,
- CODEC_ID_ULTI,
- CODEC_ID_QDRAW,
- CODEC_ID_VIXL,
- CODEC_ID_QPEG,
-{$IF LIBAVCODEC_VERSION_MAJOR < 53}
- CODEC_ID_XVID,
-{$IFEND}
- CODEC_ID_PNG,
- CODEC_ID_PPM,
- CODEC_ID_PBM,
- CODEC_ID_PGM,
- CODEC_ID_PGMYUV,
- CODEC_ID_PAM,
- CODEC_ID_FFVHUFF,
- CODEC_ID_RV30,
- CODEC_ID_RV40,
- CODEC_ID_VC1,
- CODEC_ID_WMV3,
- CODEC_ID_LOCO,
- CODEC_ID_WNV1,
- CODEC_ID_AASC,
- CODEC_ID_INDEO2,
- CODEC_ID_FRAPS,
- CODEC_ID_TRUEMOTION2,
- CODEC_ID_BMP,
- CODEC_ID_CSCD,
- CODEC_ID_MMVIDEO,
- CODEC_ID_ZMBV,
- CODEC_ID_AVS,
- CODEC_ID_SMACKVIDEO,
- CODEC_ID_NUV,
- CODEC_ID_KMVC,
- CODEC_ID_FLASHSV,
- CODEC_ID_CAVS,
- CODEC_ID_JPEG2000,
- CODEC_ID_VMNC,
- CODEC_ID_VP5,
- CODEC_ID_VP6,
- CODEC_ID_VP6F,
- CODEC_ID_TARGA,
- CODEC_ID_DSICINVIDEO,
- CODEC_ID_TIERTEXSEQVIDEO,
- CODEC_ID_TIFF,
- CODEC_ID_GIF,
- CODEC_ID_FFH264,
- CODEC_ID_DXA,
- CODEC_ID_DNXHD,
- CODEC_ID_THP,
- CODEC_ID_SGI,
- CODEC_ID_C93,
- CODEC_ID_BETHSOFTVID,
- CODEC_ID_PTX,
- CODEC_ID_TXD,
- CODEC_ID_VP6A,
- CODEC_ID_AMV,
- CODEC_ID_VB,
- CODEC_ID_PCX,
- CODEC_ID_SUNRAST,
- CODEC_ID_INDEO4,
- CODEC_ID_INDEO5,
- CODEC_ID_MIMIC,
- CODEC_ID_RL2,
- CODEC_ID_8SVX_EXP,
- CODEC_ID_8SVX_FIB,
- CODEC_ID_ESCAPE124,
- CODEC_ID_DIRAC,
- CODEC_ID_BFI,
- CODEC_ID_CMV,
- CODEC_ID_MOTIONPIXELS,
- CODEC_ID_TGV,
- CODEC_ID_TGQ,
-{$IF LIBAVCODEC_VERSION >= 52012000} // >= 52.12.0
- CODEC_ID_TQI,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52022002} // >= 52.22.2
- CODEC_ID_AURA,
- CODEC_ID_AURA2,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52027000} // >= 52.27.0
- CODEC_ID_V210X,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52028000} // >= 52.28.0
- CODEC_ID_TMV,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52029000} // >= 52.29.0
- CODEC_ID_V210,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52030002} // >= 52.30.2
- CODEC_ID_DPX,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52031002} // >= 52.31.2
- CODEC_ID_MAD,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52037000} // >= 52.37.0
- CODEC_ID_FRWU,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52041000} // >= 52.41.0
- CODEC_ID_FLASHSV2,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52043000} // >= 52.43.0
- CODEC_ID_CDGRAPHICS,
- CODEC_ID_R210,
-{$IFEND}
- CODEC_ID_ANM,
-{$IF LIBAVCODEC_VERSION >= 52049000} // >= 52.49.0
- CODEC_ID_BINKVIDEO,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52052000} // >= 52.52.0
- CODEC_ID_IFF_ILBM,
- CODEC_ID_IFF_BYTERUN1,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52058000} // >= 52.58.0
- CODEC_ID_KGV1,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52062000} // >= 52.62.0
- CODEC_ID_YOP,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52067002} // >= 52.67.2
- CODEC_ID_VP8,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52075001} // >= 52.75.1
- CODEC_ID_PICTOR,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52084000} // >= 52.84.0
- CODEC_ID_ANSI,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52086001} // >= 52.86.1
- CODEC_ID_A64_MULTI,
- CODEC_ID_A64_MULTI5,
-{$IFEND}
-
- //* various PCM "codecs" */
- CODEC_ID_PCM_S16LE= $10000,
- CODEC_ID_PCM_S16BE,
- CODEC_ID_PCM_U16LE,
- CODEC_ID_PCM_U16BE,
- CODEC_ID_PCM_S8,
- CODEC_ID_PCM_U8,
- CODEC_ID_PCM_MULAW,
- CODEC_ID_PCM_ALAW,
- CODEC_ID_PCM_S32LE,
- CODEC_ID_PCM_S32BE,
- CODEC_ID_PCM_U32LE,
- CODEC_ID_PCM_U32BE,
- CODEC_ID_PCM_S24LE,
- CODEC_ID_PCM_S24BE,
- CODEC_ID_PCM_U24LE,
- CODEC_ID_PCM_U24BE,
- CODEC_ID_PCM_S24DAUD,
- CODEC_ID_PCM_ZORK,
- CODEC_ID_PCM_S16LE_PLANAR,
- CODEC_ID_PCM_DVD,
- CODEC_ID_PCM_F32BE,
- CODEC_ID_PCM_F32LE,
- CODEC_ID_PCM_F64BE,
- CODEC_ID_PCM_F64LE,
-{$IF LIBAVCODEC_VERSION >= 52034000} // >= 52.34.0
- CODEC_ID_PCM_BLURAY,
-{$IFEND}
-
- //* various ADPCM codecs */
- CODEC_ID_ADPCM_IMA_QT= $11000,
- CODEC_ID_ADPCM_IMA_WAV,
- CODEC_ID_ADPCM_IMA_DK3,
- CODEC_ID_ADPCM_IMA_DK4,
- CODEC_ID_ADPCM_IMA_WS,
- CODEC_ID_ADPCM_IMA_SMJPEG,
- CODEC_ID_ADPCM_MS,
- CODEC_ID_ADPCM_4XM,
- CODEC_ID_ADPCM_XA,
- CODEC_ID_ADPCM_ADX,
- CODEC_ID_ADPCM_EA,
- CODEC_ID_ADPCM_G726,
- CODEC_ID_ADPCM_CT,
- CODEC_ID_ADPCM_SWF,
- CODEC_ID_ADPCM_YAMAHA,
- CODEC_ID_ADPCM_SBPRO_4,
- CODEC_ID_ADPCM_SBPRO_3,
- CODEC_ID_ADPCM_SBPRO_2,
- CODEC_ID_ADPCM_THP,
- CODEC_ID_ADPCM_IMA_AMV,
- CODEC_ID_ADPCM_EA_R1,
- CODEC_ID_ADPCM_EA_R3,
- CODEC_ID_ADPCM_EA_R2,
- CODEC_ID_ADPCM_IMA_EA_SEAD,
- CODEC_ID_ADPCM_IMA_EA_EACS,
- CODEC_ID_ADPCM_EA_XAS,
- CODEC_ID_ADPCM_EA_MAXIS_XA,
- CODEC_ID_ADPCM_IMA_ISS,
-
- //* AMR */
- CODEC_ID_AMR_NB= $12000,
- CODEC_ID_AMR_WB,
-
- //* RealAudio codecs*/
- CODEC_ID_RA_144= $13000,
- CODEC_ID_RA_288,
-
- //* various DPCM codecs */
- CODEC_ID_ROQ_DPCM= $14000,
- CODEC_ID_INTERPLAY_DPCM,
- CODEC_ID_XAN_DPCM,
- CODEC_ID_SOL_DPCM,
-
- (* audio codecs *)
- CODEC_ID_MP2= $15000,
- CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3
- CODEC_ID_AAC,
- {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0
- _CODEC_ID_MPEG4AAC, // will be redefined to CODEC_ID_AAC below
- {$IFEND}
- CODEC_ID_AC3,
- CODEC_ID_DTS,
- CODEC_ID_VORBIS,
- CODEC_ID_DVAUDIO,
- CODEC_ID_WMAV1,
- CODEC_ID_WMAV2,
- CODEC_ID_MACE3,
- CODEC_ID_MACE6,
- CODEC_ID_VMDAUDIO,
- CODEC_ID_SONIC,
- CODEC_ID_SONIC_LS,
- CODEC_ID_FLAC,
- CODEC_ID_MP3ADU,
- CODEC_ID_MP3ON4,
- CODEC_ID_SHORTEN,
- CODEC_ID_ALAC,
- CODEC_ID_WESTWOOD_SND1,
- CODEC_ID_GSM, ///< as in Berlin toast format
- CODEC_ID_QDM2,
- CODEC_ID_COOK,
- CODEC_ID_TRUESPEECH,
- CODEC_ID_TTA,
- CODEC_ID_SMACKAUDIO,
- CODEC_ID_QCELP,
- CODEC_ID_WAVPACK,
- CODEC_ID_DSICINAUDIO,
- CODEC_ID_IMC,
- CODEC_ID_MUSEPACK7,
- CODEC_ID_MLP,
- CODEC_ID_GSM_MS, { as found in WAV }
- CODEC_ID_ATRAC3,
- CODEC_ID_VOXWARE,
- CODEC_ID_APE,
- CODEC_ID_NELLYMOSER,
- CODEC_ID_MUSEPACK8,
- CODEC_ID_SPEEX,
- CODEC_ID_WMAVOICE,
- CODEC_ID_WMAPRO,
- CODEC_ID_WMALOSSLESS,
- CODEC_ID_ATRAC3P,
- CODEC_ID_EAC3,
- CODEC_ID_SIPR,
- CODEC_ID_MP1,
-{$IF LIBAVCODEC_VERSION >= 52020000} // >= 52.20.0
- CODEC_ID_TWINVQ,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52022000} // >= 52.22.0
- CODEC_ID_TRUEHD,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52026000} // >= 52.26.0
- CODEC_ID_MP4ALS,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52035000} // >= 52.35.0
- CODEC_ID_ATRAC1,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52049000} // >= 52.49.0
- CODEC_ID_BINKAUDIO_RDFT,
- CODEC_ID_BINKAUDIO_DCT,
-{$IFEND}
-
- //* subtitle codecs */
- CODEC_ID_DVD_SUBTITLE= $17000,
- CODEC_ID_DVB_SUBTITLE,
- CODEC_ID_TEXT, ///< raw UTF-8 text
- CODEC_ID_XSUB,
- CODEC_ID_SSA,
- CODEC_ID_MOV_TEXT,
-{$IF LIBAVCODEC_VERSION >= 52033000} // >= 52.33.0
- CODEC_ID_HDMV_PGS_SUBTITLE,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52037001} // >= 52.37.1
- CODEC_ID_DVB_TELETEXT,
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52084001} // >= 52.84.1
- CODEC_ID_SRT,
-{$IFEND}
-
- (* other specific kind of codecs (generally used for attachments) *)
- CODEC_ID_TTF= $18000,
-
- CODEC_ID_PROBE= $19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it
-
- CODEC_ID_MPEG2TS= $20000, {*< _FAKE_ codec to indicate a raw MPEG-2 TS
- * stream (only used by libavformat) *}
- __CODEC_ID_4BYTE = $FFFFF // ensure 4-byte enum
- );
-
-{$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0
-{* CODEC_ID_MP3LAME is obsolete *}
-const
- CODEC_ID_MP3LAME = CODEC_ID_MP3;
- CODEC_ID_MPEG4AAC = CODEC_ID_AAC;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION_MAJOR < 53} // < 53.0.0
-type
- TCodecType = (
- CODEC_TYPE_UNKNOWN = -1,
- CODEC_TYPE_VIDEO,
- CODEC_TYPE_AUDIO,
- CODEC_TYPE_DATA,
- CODEC_TYPE_SUBTITLE,
- CODEC_TYPE_ATTACHMENT,
- CODEC_TYPE_NB
- );
-{$IFEND}
-
-{
- TAVMediaType moved to avutil in LIBAVUTIL_VERSION 50.14.0
- but moving it in the pascal headers was not really necessary
- but caused problems. So, I (KMS) left it here.
-}
-{$IF LIBAVCODEC_VERSION >= 52064000} // >= 52.64.0
-type
- TAVMediaType = (
- AVMEDIA_TYPE_UNKNOWN = -1,
- AVMEDIA_TYPE_VIDEO,
- AVMEDIA_TYPE_AUDIO,
- AVMEDIA_TYPE_DATA,
- AVMEDIA_TYPE_SUBTITLE,
- AVMEDIA_TYPE_ATTACHMENT,
- AVMEDIA_TYPE_NB
- );
-{$IFEND}
-
-{**
- * all in native endian
- *}
-type
- TSampleFormat = (
- SAMPLE_FMT_NONE = -1,
- SAMPLE_FMT_U8, ///< unsigned 8 bits
- SAMPLE_FMT_S16, ///< signed 16 bits
- SAMPLE_FMT_S32, ///< signed 32 bits
- SAMPLE_FMT_FLT, ///< float
- SAMPLE_FMT_DBL, ///< double
- SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if dynamically linking to libavcodec
- );
- _TSampleFormatArray = array [0 .. MaxInt div SizeOf(TSampleFormat)-1] of TSampleFormat;
- PSampleFormatArray = ^_TSampleFormatArray;
-
-const
- {* Audio channel masks *}
- CH_FRONT_LEFT = $00000001;
- CH_FRONT_RIGHT = $00000002;
- CH_FRONT_CENTER = $00000004;
- CH_LOW_FREQUENCY = $00000008;
- CH_BACK_LEFT = $00000010;
- CH_BACK_RIGHT = $00000020;
- CH_FRONT_LEFT_OF_CENTER = $00000040;
- CH_FRONT_RIGHT_OF_CENTER = $00000080;
- CH_BACK_CENTER = $00000100;
- CH_SIDE_LEFT = $00000200;
- CH_SIDE_RIGHT = $00000400;
- CH_TOP_CENTER = $00000800;
- CH_TOP_FRONT_LEFT = $00001000;
- CH_TOP_FRONT_CENTER = $00002000;
- CH_TOP_FRONT_RIGHT = $00004000;
- CH_TOP_BACK_LEFT = $00008000;
- CH_TOP_BACK_CENTER = $00010000;
- CH_TOP_BACK_RIGHT = $00020000;
- CH_STEREO_LEFT = $20000000; ///< Stereo downmix.
- CH_STEREO_RIGHT = $40000000; ///< See CH_STEREO_LEFT.
-{** Channel mask value used for AVCodecContext.request_channel_layout
- * to indicate that the user requests the channel order of the decoder output
- * to be the native codec channel order.
- *}
-{$IF LIBAVCODEC_VERSION >= 52038001} // >= 52.38.1
- CH_LAYOUT_NATIVE = $8000000000000000;
-{$IFEND}
-
- {* Audio channel convenience macros *}
- CH_LAYOUT_MONO = (CH_FRONT_CENTER);
- CH_LAYOUT_STEREO = (CH_FRONT_LEFT or CH_FRONT_RIGHT);
- CH_LAYOUT_SURROUND = (CH_LAYOUT_STEREO or CH_FRONT_CENTER);
-{$IF LIBAVCODEC_VERSION >= 52027000} // >= 52.27.0
- CH_LAYOUT_2_1 = (CH_LAYOUT_STEREO or CH_BACK_CENTER);
- CH_LAYOUT_4POINT0 = (CH_LAYOUT_SURROUND or CH_BACK_CENTER);
- CH_LAYOUT_2_2 = (CH_LAYOUT_STEREO or CH_SIDE_LEFT or CH_SIDE_RIGHT);
-{$IFEND}
- CH_LAYOUT_QUAD = (CH_LAYOUT_STEREO or CH_BACK_LEFT or CH_BACK_RIGHT);
- CH_LAYOUT_5POINT0 = (CH_LAYOUT_SURROUND or CH_SIDE_LEFT or CH_SIDE_RIGHT);
- CH_LAYOUT_5POINT1 = (CH_LAYOUT_5POINT0 or CH_LOW_FREQUENCY);
-{$IF LIBAVCODEC_VERSION >= 52025000} // >= 52.25.0
- CH_LAYOUT_5POINT0_BACK = (CH_LAYOUT_SURROUND or CH_BACK_LEFT or
- CH_BACK_RIGHT);
- CH_LAYOUT_5POINT1_BACK = (CH_LAYOUT_5POINT0_BACK or CH_LOW_FREQUENCY);
-{$IFEND}
-{$IF LIBAVCODEC_VERSION >= 52034000} // >= 52.34.0
- CH_LAYOUT_7POINT0 = (CH_LAYOUT_5POINT0 or CH_BACK_LEFT or CH_BACK_RIGHT);
-{$IFEND}
- CH_LAYOUT_7POINT1 = (CH_LAYOUT_5POINT1 or CH_BACK_LEFT or CH_BACK_RIGHT);
-{$IF LIBAVCODEC_VERSION < 52025000} // < 52.25.0
- CH_LAYOUT_7POINT1_WIDE = (CH_LAYOUT_SURROUND or CH_LOW_FREQUENCY or
- CH_BACK_LEFT or CH_BACK_RIGHT or
-{$ELSE}
- CH_LAYOUT_7POINT1_WIDE = (CH_LAYOUT_5POINT1_BACK or
-{$IFEND}
- CH_FRONT_LEFT_OF_CENTER or
- CH_FRONT_RIGHT_OF_CENTER);
- CH_LAYOUT_STEREO_DOWNMIX = (CH_STEREO_LEFT or CH_STEREO_RIGHT);
-
-{* in bytes *}
- AVCODEC_MAX_AUDIO_FRAME_SIZE = 192000; // 1 second of 48khz 32bit audio
-
-{$IF LIBAVCODEC_VERSION <= 52056000} // <= 52.56.0
-{**
- * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
- * This is mainly needed because some optimized bitstream readers read
- * 32 or 64 bit at once and could read over the end.<br>
- * Note: If the first 23 bits of the additional bytes are not 0, then damaged
- * MPEG bitstreams could cause overread and segfault.
- *}
- FF_INPUT_BUFFER_PADDING_SIZE = 8;
-{$ELSEIF LIBAVCODEC_VERSION < 52058000} // < 52.58.0
-{**
- * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
- * The first 8 bytes are needed because some optimized bitstream readers read
- * 32 or 64 bit at once and could read over the end. The remainder is to give
- * decoders a reasonable amount of distance to work with before checking for
- * buffer overreads.<br>
- * Note: If the first 23 bits of the additional bytes are not 0, then damaged
- * MPEG bitstreams could cause overread and segfault.
- *}
- FF_INPUT_BUFFER_PADDING_SIZE = 64;
-{$ELSE} // >= 52.58.0}
-{**
- * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
- * This is mainly needed because some optimized bitstream readers read
- * 32 or 64 bit at once and could read over the end.<br>
- * Note: If the first 23 bits of the additional bytes are not 0, then damaged
- * MPEG bitstreams could cause overread and segfault.
- *}
- FF_INPUT_BUFFER_PADDING_SIZE = 8;
-{$IFEND}
-
-{**
- * minimum encoding buffer size.
- * Used to avoid some checks during header writing.
- *}
- FF_MIN_BUFFER_SIZE = 16384;
-
-type
-{*
- * motion estimation type.
- *}
- TMotion_Est_ID = (
- ME_ZERO = 1, ///< no search, that is use 0,0 vector whenever one is needed
- ME_FULL,
- ME_LOG,
- ME_PHODS,
- ME_EPZS, ///< enhanced predictive zonal search
- ME_X1, ///< reserved for experiments
- ME_HEX, ///< hexagon based search
- ME_UMH, ///< uneven multi-hexagon search
- ME_ITER, ///< iterative search
- ME_TESA ///< transformed exhaustive search algorithm
- );
-
- TAVDiscard = (
- {* We leave some space between them for extensions (drop some
- * keyframes for intra-only or drop just some bidir frames).
- *}
- AVDISCARD_NONE = -16, ///< discard nothing
- AVDISCARD_DEFAULT = 0, ///< discard useless packets like 0 size packets in avi
- AVDISCARD_NONREF = 8, ///< discard all non reference
- AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
- AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
- AVDISCARD_ALL = 48 ///< discard all
- );
-
-{$IF LIBAVCODEC_VERSION >= 52028000} // >= 52.28.0
- TAVColorPrimaries = (
- AVCOL_PRI_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
- AVCOL_PRI_UNSPECIFIED = 2,
- AVCOL_PRI_BT470M = 4,
- AVCOL_PRI_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
- AVCOL_PRI_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
- AVCOL_PRI_SMPTE240M = 7, ///< functionally identical to above
- AVCOL_PRI_FILM = 8,
- AVCOL_PRI_NB ///< Not part of ABI
- );
-
- TAVColorTransferCharacteristic = (
- AVCOL_TRC_BT709 = 1, ///< also ITU-R BT1361
- AVCOL_TRC_UNSPECIFIED = 2,
- AVCOL_TRC_GAMMA22 = 4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
- AVCOL_TRC_GAMMA28 = 5, ///< also ITU-R BT470BG
- AVCOL_TRC_NB ///< Not part of ABI
- );
-
- TAVColorSpace = (
- AVCOL_SPC_RGB = 0,
- AVCOL_SPC_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
- AVCOL_SPC_UNSPECIFIED = 2,
- AVCOL_SPC_FCC = 4,
- AVCOL_SPC_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601
- AVCOL_SPC_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above
- AVCOL_SPC_SMPTE240M = 7,
- AVCOL_SPC_NB ///< Not part of ABI
- );
-
- TAVColorRange = (
- AVCOL_RANGE_UNSPECIFIED = 0,
- AVCOL_RANGE_MPEG = 1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges
- AVCOL_RANGE_JPEG = 2, ///< the normal 2^n-1 "JPEG" YUV ranges
- AVCOL_RANGE_NB ///< Not part of ABI
- );
-
-(**
- * X X 3 4 X X are luma samples,
- * 1 2 1-6 are possible chroma positions
- * X X 5 6 X 0 is undefined/unknown position
- *)
- TAVChromaLocation = (
- AVCHROMA_LOC_UNSPECIFIED = 0,
- AVCHROMA_LOC_LEFT = 1, ///< mpeg2/4, h264 default
- AVCHROMA_LOC_CENTER = 2, ///< mpeg1, jpeg, h263
- AVCHROMA_LOC_TOPLEFT = 3, ///< DV
- AVCHROMA_LOC_TOP = 4,
- AVCHROMA_LOC_BOTTOMLEFT = 5,
- AVCHROMA_LOC_BOTTOM = 6,
- AVCHROMA_LOC_NB ///< Not part of ABI
- );
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52083000} // >= 52.83.0
-(**
- * 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}
-
- PRcOverride = ^TRcOverride;
- TRcOverride = record {16}
- start_frame: cint;
- end_frame: cint;
- qscale: cint; // if this is 0 then quality_factor will be used instead
- quality_factor: cfloat;
- end;
-
-const
- FF_MAX_B_FRAMES = 16;
-
-{* encoding support
- These flags can be passed in AVCodecContext.flags before initialization.
- Note: Not everything is supported yet.
-*}
-
- CODEC_FLAG_QSCALE = $0002; ///< Use fixed qscale.
- CODEC_FLAG_4MV = $0004; ///< 4 MV per MB allowed / advanced prediction for H263.
- CODEC_FLAG_QPEL = $0010; ///< use qpel MC.
- CODEC_FLAG_GMC = $0020; ///< use GMC.
- CODEC_FLAG_MV0 = $0040; ///< always try a MB with MV=<0,0>.
- CODEC_FLAG_PART = $0080; ///< Use data partitioning.
- {**
- * The parent program guarantees that the input for B-frames containing
- * streams is not written to for at least s->max_b_frames+1 frames, if
- * this is not set the input will be copied.
- *}
- CODEC_FLAG_INPUT_PRESERVED = $0100;
- CODEC_FLAG_PASS1 = $0200; ///< use internal 2pass ratecontrol in first pass mode
- CODEC_FLAG_PASS2 = $0400; ///< use internal 2pass ratecontrol in second pass mode
- CODEC_FLAG_EXTERN_HUFF = $1000; ///< use external huffman table (for mjpeg)
- CODEC_FLAG_GRAY = $2000; ///< only decode/encode grayscale
- CODEC_FLAG_EMU_EDGE = $4000; ///< don't draw edges
- CODEC_FLAG_PSNR = $8000; ///< error[?] variables will be set during encoding
- CODEC_FLAG_TRUNCATED = $00010000; //** input bitstream might be truncated at a random location instead
- // of only at frame boundaries */
- CODEC_FLAG_NORMALIZE_AQP = $00020000; ///< normalize adaptive quantization
- CODEC_FLAG_INTERLACED_DCT = $00040000; ///< use interlaced dct
- CODEC_FLAG_LOW_DELAY = $00080000; ///< force low delay
- CODEC_FLAG_ALT_SCAN = $00100000; ///< use alternate scan
- {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0
- CODEC_FLAG_TRELLIS_QUANT = $00200000; ///< use trellis quantization
- {$IFEND}
- CODEC_FLAG_GLOBAL_HEADER = $00400000; ///< place global headers in extradata instead of every keyframe
- CODEC_FLAG_BITEXACT = $00800000; ///< use only bitexact stuff (except (i)dct)
- {* Fx : Flag for h263+ extra options *}
- {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0
- CODEC_FLAG_H263P_AIC = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
- {$IFEND}
- CODEC_FLAG_AC_PRED = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction
- CODEC_FLAG_H263P_UMV = $02000000; ///< Unlimited motion vector
- CODEC_FLAG_CBP_RD = $04000000; ///< use rate distortion optimization for cbp
- CODEC_FLAG_QP_RD = $08000000; ///< use rate distortion optimization for qp selectioon
- CODEC_FLAG_H263P_AIV = $00000008; ///< H263 Alternative inter vlc
- CODEC_FLAG_OBMC = $00000001; ///< OBMC
- CODEC_FLAG_LOOP_FILTER = $00000800; ///< loop filter
- CODEC_FLAG_H263P_SLICE_STRUCT = $10000000;
- CODEC_FLAG_INTERLACED_ME = $20000000; ///< interlaced motion estimation
- CODEC_FLAG_SVCD_SCAN_OFFSET = $40000000; ///< will reserve space for SVCD scan offset user data
- CODEC_FLAG_CLOSED_GOP = $80000000;
- CODEC_FLAG2_FAST = $00000001; ///< allow non spec compliant speedup tricks
- CODEC_FLAG2_STRICT_GOP = $00000002; ///< strictly enforce GOP size
- CODEC_FLAG2_NO_OUTPUT = $00000004; ///< skip bitstream encoding
- CODEC_FLAG2_LOCAL_HEADER = $00000008; ///< place global headers at every keyframe instead of in extradata
- CODEC_FLAG2_BPYRAMID = $00000010; ///< H.264 allow b-frames to be used as references
- CODEC_FLAG2_WPRED = $00000020; ///< H.264 weighted biprediction for b-frames
- CODEC_FLAG2_MIXED_REFS = $00000040; ///< H.264 multiple references per partition
- CODEC_FLAG2_8X8DCT = $00000080; ///< H.264 high profile 8x8 transform
- CODEC_FLAG2_FASTPSKIP = $00000100; ///< H.264 fast pskip
- CODEC_FLAG2_AUD = $00000200; ///< H.264 access unit delimiters
- CODEC_FLAG2_BRDO = $00000400; ///< b-frame rate-distortion optimization
- CODEC_FLAG2_INTRA_VLC = $00000800; ///< use MPEG-2 intra VLC table
- CODEC_FLAG2_MEMC_ONLY = $00001000; ///< only do ME/MC (I frames -> ref, P frame -> ME+MC)
- CODEC_FLAG2_DROP_FRAME_TIMECODE = $00002000; ///< timecode is in drop frame format.
- CODEC_FLAG2_SKIP_RD = $00004000; ///< RD optimal MB level residual skipping
- CODEC_FLAG2_CHUNKS = $00008000; ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
- CODEC_FLAG2_NON_LINEAR_QUANT = $00010000; ///< Use MPEG-2 nonlinear quantizer.
- CODEC_FLAG2_BIT_RESERVOIR = $00020000; ///< Use a bit reservoir when encoding if possible
- {$IF LIBAVCODEC_VERSION >= 52043000} // >= 52.43.0
- CODEC_FLAG2_MBTREE = $00040000; ///< Use macroblock tree ratecontrol (x264 only)
- {$IFEND}
- {$IF LIBAVCODEC_VERSION >= 52061000} // >= 52.61.0
- CODEC_FLAG2_PSY = $00080000; ///< Use psycho visual optimizations.
- CODEC_FLAG2_SSIM = $00100000; ///< Compute SSIM during encoding, error[] values are undefined.
- {$IFEND}
- {$IF LIBAVCODEC_VERSION >= 52067000} // >= 52.67.0
- CODEC_FLAG2_INTRA_REFRESH = $00200000; ///< Use periodic insertion of intra blocks instead of keyframes.
- {$IFEND}
-
-(* Unsupported options :
- * Syntax Arithmetic coding (SAC)
- * Reference Picture Selection
- * Independant Segment Decoding *)
-(* /Fx *)
-(* codec capabilities *)
-
- CODEC_CAP_DRAW_HORIZ_BAND = $0001; ///< decoder can use draw_horiz_band callback
- (**
- * Codec uses get_buffer() for allocating buffers and supports custom allocators.
- * If not set, it might not use get_buffer() at all or use operations that
- * assume the buffer was allocated by avcodec_default_get_buffer.
- *)
- CODEC_CAP_DR1 = $0002;
- (* if 'parse_only' field is true, then avcodec_parse_frame() can be used *)
- CODEC_CAP_PARSE_ONLY = $0004;
- CODEC_CAP_TRUNCATED = $0008;
- (* codec can export data for HW decoding (XvMC) *)
- CODEC_CAP_HWACCEL = $0010;
- (**
- * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
- * if this is not set, the codec is guranteed to never be feeded with NULL data
- *)
- CODEC_CAP_DELAY = $0020;
- (**
- * Codec can be fed a final frame with a smaller size.
- * This can be used to prevent truncation of the last audio samples.
- *)
- CODEC_CAP_SMALL_LAST_FRAME = $0040;
-
- (**
- * Codec can export data for HW decoding (VDPAU).
- *)
- CODEC_CAP_HWACCEL_VDPAU = $0080;
-
- {$IF LIBAVCODEC_VERSION >= 52035000} // >= 52.35.0
- (**
- * Codec can output multiple frames per AVPacket
- * Normally demuxers return one frame at a time, demuxers which do not do
- * are connected to a parser to split what they return into proper frames.
- * This flag is reserved to the very rare category of codecs which have a
- * bitstream that cannot be split into frames without timeconsuming
- * operations like full decoding. Demuxers carring such bitstreams thus
- * may return multiple frames in a packet. This has many disadvantages like
- * prohibiting stream copy in many cases thus it should only be considered
- * as a last resort.
- *)
- CODEC_CAP_SUBFRAMES = $0100;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52071000} // >= 52.71.0
- (**
- * Codec is experimental and is thus avoided in favor of non experimental
- * encoders
- *)
- CODEC_CAP_EXPERIMENTAL = $0200;
- {$IFEND}
-
- //the following defines may change, don't expect compatibility if you use them
- MB_TYPE_INTRA4x4 = $001;
- MB_TYPE_INTRA16x16 = $002; //FIXME h264 specific
- MB_TYPE_INTRA_PCM = $004; //FIXME h264 specific
- MB_TYPE_16x16 = $008;
- MB_TYPE_16x8 = $010;
- MB_TYPE_8x16 = $020;
- MB_TYPE_8x8 = $040;
- MB_TYPE_INTERLACED = $080;
- MB_TYPE_DIRECT2 = $100; //FIXME
- MB_TYPE_ACPRED = $200;
- MB_TYPE_GMC = $400;
- MB_TYPE_SKIP = $800;
- MB_TYPE_P0L0 = $1000;
- MB_TYPE_P1L0 = $2000;
- MB_TYPE_P0L1 = $4000;
- MB_TYPE_P1L1 = $8000;
- MB_TYPE_L0 = (MB_TYPE_P0L0 or MB_TYPE_P1L0);
- MB_TYPE_L1 = (MB_TYPE_P0L1 or MB_TYPE_P1L1);
- MB_TYPE_L0L1 = (MB_TYPE_L0 or MB_TYPE_L1);
- MB_TYPE_QUANT = $0010000;
- MB_TYPE_CBP = $0020000;
- //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
-
-type
-(**
- * Pan Scan area.
- * This specifies the area which should be displayed.
- * Note there may be multiple such areas for one frame.
- *)
- PAVPanScan = ^TAVPanScan;
- TAVPanScan = record {24}
- (*** id.
- * - encoding: set by user.
- * - decoding: set by libavcodec. *)
- id: cint;
-
- (*** width and height in 1/16 pel
- * - encoding: set by user.
- * - decoding: set by libavcodec. *)
- width: cint;
- height: cint;
-
- (*** position of the top left corner in 1/16 pel for up to 3 fields/frames.
- * - encoding: set by user.
- * - decoding: set by libavcodec. *)
- position: array [0..2] of array [0..1] of smallint;
- end;
-
-const
- FF_QSCALE_TYPE_MPEG1 = 0;
- FF_QSCALE_TYPE_MPEG2 = 1;
- FF_QSCALE_TYPE_H264 = 2;
- {$IF LIBAVCODEC_VERSION >= 52049000} // >= 52.49.0
- FF_QSCALE_TYPE_VP56 = 3;
- {$IFEND}
-
- FF_BUFFER_TYPE_INTERNAL = 1;
- FF_BUFFER_TYPE_USER = 2; ///< Direct rendering buffers (image is (de)allocated by user)
- FF_BUFFER_TYPE_SHARED = 4; ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
- FF_BUFFER_TYPE_COPY = 8; ///< just a (modified) copy of some other buffer, don't dealloc anything.
-
-
- FF_I_TYPE = 1; ///< Intra
- FF_P_TYPE = 2; ///< Predicted
- FF_B_TYPE = 3; ///< Bi-dir predicted
- FF_S_TYPE = 4; ///< S(GMC)-VOP MPEG4
- FF_SI_TYPE = 5; ///< Switching Intra
- FF_SP_TYPE = 6; ///< Switching Predicted
- FF_BI_TYPE = 7;
-
- FF_BUFFER_HINTS_VALID = $01; // Buffer hints value is meaningful (if 0 ignore)
- FF_BUFFER_HINTS_READABLE = $02; // Codec will read from buffer
- FF_BUFFER_HINTS_PRESERVE = $04; // User must not alter buffer content
- FF_BUFFER_HINTS_REUSABLE = $08; // Codec will reuse the buffer (update)
-
-const
- {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0
- DEFAULT_FRAME_RATE_BASE = 1001000;
- {$IFEND}
-
- FF_ASPECT_EXTENDED = 15;
-
- FF_RC_STRATEGY_XVID = 1;
-
- FF_BUG_AUTODETECT = 1; ///< autodetection
- FF_BUG_OLD_MSMPEG4 = 2;
- FF_BUG_XVID_ILACE = 4;
- FF_BUG_UMP4 = 8;
- FF_BUG_NO_PADDING = 16;
- FF_BUG_AMV = 32;
- FF_BUG_AC_VLC = 0; ///< will be removed, libavcodec can now handle these non compliant files by default
- FF_BUG_QPEL_CHROMA = 64;
- FF_BUG_STD_QPEL = 128;
- FF_BUG_QPEL_CHROMA2 = 256;
- FF_BUG_DIRECT_BLOCKSIZE = 512;
- FF_BUG_EDGE = 1024;
- FF_BUG_HPEL_CHROMA = 2048;
- FF_BUG_DC_CLIP = 4096;
- FF_BUG_MS = 8192; ///< workaround various bugs in microsofts broken decoders
- {$IF LIBAVCODEC_VERSION >= 52054000} // >= 52.54.0
- FF_BUG_TRUNCATED = 16384;
- {$IFEND}
- //FF_BUG_FAKE_SCALABILITY = 16 //Autodetection should work 100%.
-
- FF_COMPLIANCE_VERY_STRICT = 2; ///< strictly conform to an older more strict version of the spec or reference software
- FF_COMPLIANCE_STRICT = 1; ///< strictly conform to all the things in the spec no matter what consequences
- FF_COMPLIANCE_NORMAL = 0;
- {$IF LIBAVCODEC_VERSION_MAJOR < 53} // < 53
- FF_COMPLIANCE_INOFFICIAL = -1; ///< Allow inofficial extensions
- {$IFEND}
- {$IF LIBAVCODEC_VERSION >= 52079001} // >= 52.79.1
- FF_COMPLIANCE_UNOFFICIAL = -1; ///< Allow unofficial extensions
- {$IFEND}
-
- FF_COMPLIANCE_EXPERIMENTAL = -2; ///< allow non standarized experimental things
-
- FF_ER_CAREFUL = 1;
- FF_ER_COMPLIANT = 2;
- FF_ER_AGGRESSIVE = 3;
- FF_ER_VERY_AGGRESSIVE = 4;
-
- FF_DCT_AUTO = 0;
- FF_DCT_FASTINT = 1;
- FF_DCT_INT = 2;
- FF_DCT_MMX = 3;
- FF_DCT_MLIB = 4;
- FF_DCT_ALTIVEC = 5;
- FF_DCT_FAAN = 6;
-
- FF_IDCT_AUTO = 0;
- FF_IDCT_INT = 1;
- FF_IDCT_SIMPLE = 2;
- FF_IDCT_SIMPLEMMX = 3;
- FF_IDCT_LIBMPEG2MMX = 4;
- FF_IDCT_PS2 = 5;
- FF_IDCT_MLIB = 6;
- FF_IDCT_ARM = 7;
- FF_IDCT_ALTIVEC = 8;
- FF_IDCT_SH4 = 9;
- FF_IDCT_SIMPLEARM = 10;
- FF_IDCT_H264 = 11;
- FF_IDCT_VP3 = 12;
- FF_IDCT_IPP = 13;
- FF_IDCT_XVIDMMX = 14;
- FF_IDCT_CAVS = 15;
- FF_IDCT_SIMPLEARMV5TE= 16;
- FF_IDCT_SIMPLEARMV6 = 17;
- FF_IDCT_SIMPLEVIS = 18;
- FF_IDCT_WMV2 = 19;
- FF_IDCT_FAAN = 20;
- FF_IDCT_EA = 21;
- FF_IDCT_SIMPLENEON = 22;
- FF_IDCT_SIMPLEALPHA = 23;
- {$IF LIBAVCODEC_VERSION >= 52055000} // >= 52.55.0
- FF_IDCT_BINK = 24;
- {$IFEND}
-
- FF_EC_GUESS_MVS = 1;
- FF_EC_DEBLOCK = 2;
-
- FF_MM_FORCE = $80000000; (* force usage of selected flags (OR) *)
- (* lower 16 bits - CPU features *)
- FF_MM_MMX = $0001; ///< standard MMX
- FF_MM_3DNOW = $0004; ///< AMD 3DNOW
- {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
- FF_MM_MMXEXT = $0002; ///< SSE integer functions or AMD MMX ext
- {$IFEND}
- {$IF LIBAVCODEC_VERSION >= 52024000} // >= 52.24.0
- FF_MM_MMX2 = $0002; ///< SSE integer functions or AMD MMX ext
- {$IFEND}
- FF_MM_SSE = $0008; ///< SSE functions
- FF_MM_SSE2 = $0010; ///< PIV SSE2 functions
- {$IF LIBAVCODEC_VERSION >= 52084000} // >= 52.84.0
- FF_MM_SSE2SLOW = $40000000; ///< SSE2 supported, but usually not faster
- ///< than regular MMX/SSE (e.g. Core1)
- {$IFEND}
- FF_MM_3DNOWEXT = $0020; ///< AMD 3DNowExt
- FF_MM_SSE3 = $0040; ///< Prescott SSE3 functions
- {$IF LIBAVCODEC_VERSION >= 52084000} // >= 52.84.0
- FF_MM_SSE3SLOW = $20000000; ///< SSE3 supported, but usually not faster
- ///< than regular MMX/SSE (e.g. Core1)
- {$IFEND}
- FF_MM_SSSE3 = $0080; ///< Conroe SSSE3 functions
- {$IF LIBAVCODEC_VERSION >= 52022003} // >= 52.22.3
- FF_MM_SSE4 = $0100; ///< Penryn SSE4.1 functions
- FF_MM_SSE42 = $0200; ///< Nehalem SSE4.2 functions
- {$IFEND}
- FF_MM_IWMMXT = $0100; ///< XScale IWMMXT
- FF_MM_ALTIVEC = $0001; ///< standard AltiVec
-
- FF_PRED_LEFT = 0;
- FF_PRED_PLANE = 1;
- FF_PRED_MEDIAN = 2;
-
- FF_DEBUG_PICT_INFO = 1;
- FF_DEBUG_RC = 2;
- FF_DEBUG_BITSTREAM = 4;
- FF_DEBUG_MB_TYPE = 8;
- FF_DEBUG_QP = 16;
- FF_DEBUG_MV = 32;
- FF_DEBUG_DCT_COEFF = $00000040;
- FF_DEBUG_SKIP = $00000080;
- FF_DEBUG_STARTCODE = $00000100;
- FF_DEBUG_PTS = $00000200;
- FF_DEBUG_ER = $00000400;
- FF_DEBUG_MMCO = $00000800;
- FF_DEBUG_BUGS = $00001000;
- FF_DEBUG_VIS_QP = $00002000;
- FF_DEBUG_VIS_MB_TYPE = $00004000;
- FF_DEBUG_BUFFERS = $00008000;
-
- FF_DEBUG_VIS_MV_P_FOR = $00000001; //visualize forward predicted MVs of P frames
- FF_DEBUG_VIS_MV_B_FOR = $00000002; //visualize forward predicted MVs of B frames
- FF_DEBUG_VIS_MV_B_BACK = $00000004; //visualize backward predicted MVs of B frames
-
- FF_CMP_SAD = 0;
- FF_CMP_SSE = 1;
- FF_CMP_SATD = 2;
- FF_CMP_DCT = 3;
- FF_CMP_PSNR = 4;
- FF_CMP_BIT = 5;
- FF_CMP_RD = 6;
- FF_CMP_ZERO = 7;
- FF_CMP_VSAD = 8;
- FF_CMP_VSSE = 9;
- FF_CMP_NSSE = 10;
- FF_CMP_W53 = 11;
- FF_CMP_W97 = 12;
- FF_CMP_DCTMAX = 13;
- FF_CMP_DCT264 = 14;
- FF_CMP_CHROMA = 256;
-
- FF_DTG_AFD_SAME = 8;
- FF_DTG_AFD_4_3 = 9;
- FF_DTG_AFD_16_9 = 10;
- FF_DTG_AFD_14_9 = 11;
- FF_DTG_AFD_4_3_SP_14_9 = 13;
- FF_DTG_AFD_16_9_SP_14_9 = 14;
- FF_DTG_AFD_SP_4_3 = 15;
-
- FF_DEFAULT_QUANT_BIAS = 999999;
-
- FF_LAMBDA_SHIFT = 7;
- FF_LAMBDA_SCALE = (1 shl FF_LAMBDA_SHIFT);
- FF_QP2LAMBDA = 118; ///< factor to convert from H.263 QP to lambda
- FF_LAMBDA_MAX = (256 * 128 - 1);
-
- FF_QUALITY_SCALE = FF_LAMBDA_SCALE; //FIXME maybe remove
-
- FF_CODER_TYPE_VLC = 0;
- FF_CODER_TYPE_AC = 1;
- FF_CODER_TYPE_RAW = 2;
- FF_CODER_TYPE_RLE = 3;
- FF_CODER_TYPE_DEFLATE = 4;
-
- SLICE_FLAG_CODED_ORDER = $0001; ///< draw_horiz_band() is called in coded order instead of display
- SLICE_FLAG_ALLOW_FIELD = $0002; ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
- SLICE_FLAG_ALLOW_PLANE = $0004; ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
-
- FF_MB_DECISION_SIMPLE = 0; ///< uses mb_cmp
- FF_MB_DECISION_BITS = 1; ///< chooses the one which needs the fewest bits
- FF_MB_DECISION_RD = 2; ///< rate distortion
-
- FF_AA_AUTO = 0;
- FF_AA_FASTINT = 1; //not implemented yet
- FF_AA_INT = 2;
- FF_AA_FLOAT = 3;
-
- FF_PROFILE_UNKNOWN = -99;
- FF_PROFILE_AAC_MAIN = 0;
- FF_PROFILE_AAC_LOW = 1;
- FF_PROFILE_AAC_SSR = 2;
- FF_PROFILE_AAC_LTP = 3;
-
- FF_LEVEL_UNKNOWN = -99;
-
- X264_PART_I4X4 = $001; (* Analyse i4x4 *)
- X264_PART_I8X8 = $002; (* Analyse i8x8 (requires 8x8 transform) *)
- X264_PART_P8X8 = $010; (* Analyse p16x8, p8x16 and p8x8 *)
- X264_PART_P4X4 = $020; (* Analyse p8x4, p4x8, p4x4 *)
- X264_PART_B8X8 = $100; (* Analyse b16x8, b8x16 and b8x8 *)
-
- FF_COMPRESSION_DEFAULT = -1;
-
-{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
-const
- AVPALETTE_SIZE = 1024;
- AVPALETTE_COUNT = 256;
-
-type
-(**
- * AVPaletteControl
- * This structure defines a method for communicating palette changes
- * between and demuxer and a decoder.
- *
- * @deprecated Use AVPacket to send palette changes instead.
- * This is totally broken.
- *)
- PAVPaletteControl = ^TAVPaletteControl;
- TAVPaletteControl = record
- (* demuxer sets this to 1 to indicate the palette has changed;
- * decoder resets to 0 *)
- palette_changed: cint;
-
- (* 4-byte ARGB palette entries, stored in native byte order; note that
- * the individual palette components should be on a 8-bit scale; if
- * the palette data comes from a IBM VGA native format, the component
- * data is probably 6 bits in size and needs to be scaled *)
- palette: array [0..AVPALETTE_COUNT - 1] of cuint;
- end; {deprecated;}
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52023000} // >= 52.23.0
-type
- PAVPacket = ^TAVPacket;
- TAVPacket = record
-(*
- * Presentation timestamp in AVStream->time_base units; the time at which
- * the decompressed packet will be presented to the user.
- * Can be AV_NOPTS_VALUE if it is not stored in the file.
- * pts MUST be larger or equal to dts as presentation cannot happen before
- * decompression, unless one wants to view hex dumps. Some formats misuse
- * the terms dts and pts/cts to mean something different. Such timestamps
- * must be converted to true pts/dts before they are stored in AVPacket.
- *)
- pts: cint64;
-(*
- * Decompression timestamp in AVStream->time_base units; the time at which
- * the packet is decompressed.
- * Can be AV_NOPTS_VALUE if it is not stored in the file.
- *)
- dts: cint64;
- data: PByteArray;
- size: cint;
- stream_index: cint;
- flags: cint;
-(*
- * Duration of this packet in AVStream->time_base units, 0 if unknown.
- * Equals next_pts - this_pts in presentation order.
- *)
- duration: cint;
- destruct: procedure (para1: PAVPacket); cdecl;
- priv: pointer;
- pos: cint64; // byte position in stream, -1 if unknown
-
-(*
- * Time difference in AVStream->time_base units from the pts of this
- * packet to the point at which the output from the decoder has converged
- * independent from the availability of previous frames. That is, the
- * frames are virtually identical no matter if decoding started from
- * the very first frame or from this keyframe.
- * Is AV_NOPTS_VALUE if unknown.
- * This field 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;
-
-const
- {$IF LIBAVCODEC_VERSION < 52030002} // < 52.30.2
- PKT_FLAG_KEY = $0001;
- {$ELSE}
- AV_PKT_FLAG_KEY = $0001;
- {$IF LIBAVCODEC_VERSION_MAJOR < 53}
- PKT_FLAG_KEY = AV_PKT_FLAG_KEY;
- {$IFEND}
- {$IFEND}
-{$IFEND}
-
-type
- PAVClass = ^TAVClass; {const}
- PAVCodecContext = ^TAVCodecContext;
-
- PAVCodec = ^TAVCodec;
-
-{$IF LIBAVCODEC_VERSION >= 52018000} // >= 52.18.0
- PAVHWAccel = ^TAVHWAccel;
-{$IFEND}
-
- // int[4]
- PQuadIntArray = ^TQuadIntArray;
- TQuadIntArray = array [0..3] of cint;
- // int (*func)(struct AVCodecContext *c2, void *arg)
- TExecuteFunc = function(c2: PAVCodecContext; arg: Pointer): cint; cdecl;
-{$IF LIBAVCODEC_VERSION >= 52037000} // >= 52.37.0
- // int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr)
- TExecute2Func = function(c2: PAVCodecContext; arg: Pointer; jobnr: cint; threadnr: cint): cint; cdecl;
-{$IFEND}
-
- TAVClass = record
- class_name: PAnsiChar;
- (* actually passing a pointer to an AVCodecContext
- or AVFormatContext, which begin with an AVClass.
- Needed because av_log is in libavcodec and has no visibility
- of AVIn/OutputFormat *)
- item_name: function(): PAnsiChar; cdecl;
- option: PAVOption;
-
-{$IF LIBAVUTIL_VERSION >= 50015000} // 50.15.0
- (**
- * LIBAVUTIL_VERSION with which this structure was created.
- * This is used to allow fields to be added without requiring major
- * version bumps everywhere.
- *)
- version: cint;
-{$IFEND}
-
-{$IF LIBAVUTIL_VERSION >= 50015002} // 50.15.2
- (**
- * Offset in the structure where log_level_offset is stored.
- * 0 means there is no such variable
- *)
- log_level_offset_offset: cint;
-{$IFEND}
-
-{$IF LIBAVUTIL_VERSION >= 50015003} // 50.15.3
- (**
- * Offset in the structure where a pointer to the parent context for loging is stored.
- * for example a decoder that uses eval.c could pass its AVCodecContext to eval as such
- * parent context. And a av_log() implementation could then display the parent context
- * can be NULL of course
- *)
- parent_log_context_offset: cint;
-{$IFEND}
- end;
-
- {**
- * Audio Video Frame.
- * New fields can be added to the end of FF_COMMON_FRAME with minor version
- * bumps.
- * Removal, reordering and changes to existing fields require a major
- * version bump. No fields should be added into AVFrame before or after
- * FF_COMMON_FRAME!
- * sizeof(AVFrame) must not be used outside libav*.
- *}
- PAVFrame = ^TAVFrame;
- TAVFrame = record {200}
- (**
- * pointer to the picture planes.
- * This might be different from the first allocated byte
- * - encoding:
- * - decoding:
- *)
- data: array [0..3] of pbyte;
- linesize: array [0..3] of cint;
- (**
- * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.
- * This isn't used by libavcodec unless the default get/release_buffer() is used.
- * - encoding:
- * - decoding:
- *)
- base: array [0..3] of pbyte;
- (**
- * 1 -> keyframe, 0-> not
- * - encoding: Set by libavcodec.
- * - decoding: Set by libavcodec.
- *)
- key_frame: cint;
- (**
- * Picture type of the frame, see ?_TYPE below.
- * - encoding: Set by libavcodec. for coded_picture (and set by user for input).
- * - decoding: Set by libavcodec.
- *)
- pict_type: cint;
- (**
- * presentation timestamp in time_base units (time when frame should be shown to user)
- * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.
- * - encoding: MUST be set by user.
- * - decoding: Set by libavcodec.
- *)
- pts: cint64;
- (**
- * picture number in bitstream order
- * - encoding: set by
- * - decoding: Set by libavcodec.
- *)
- coded_picture_number: cint;
- (**
- * picture number in display order
- * - encoding: set by
- * - decoding: Set by libavcodec.
- *)
- display_picture_number: cint;
- (**
- * quality (between 1 (good) and FF_LAMBDA_MAX (bad))
- * - encoding: Set by libavcodec. for coded_picture (and set by user for input).
- * - decoding: Set by libavcodec.
- *)
- quality: cint;
- (**
- * buffer age (1->was last buffer and dint change, 2->..., ...).
- * Set to INT_MAX if the buffer has not been used yet.
- * - encoding: unused
- * - decoding: MUST be set by get_buffer().
- *)
- age: cint;
- (**
- * is this picture used as reference
- * The values for this are the same as the MpegEncContext.picture_structure
- * variable, that is 1->top field, 2->bottom field, 3->frame/both fields.
- * Set to 4 for delayed, non-reference frames.
- * - encoding: unused
- * - decoding: Set by libavcodec. (before get_buffer() call)).
- *)
- reference: cint;
- (**
- * QP table
- * - encoding: unused
- * - decoding: Set by libavcodec.
- *)
- qscale_table: PShortint;
- (**
- * QP store stride
- * - encoding: unused
- * - decoding: Set by libavcodec.
- *)
- qstride: cint;
- (**
- * mbskip_table[mb]>=1 if MB didn't change
- * stride= mb_width = (width+15)>>4
- * - encoding: unused
- * - decoding: Set by libavcodec.
- *)
- mbskip_table: pbyte;
- (**
- * motion vector table
- * @code
- * example:
- * int mv_sample_log2= 4 - motion_subsample_log2;
- * int mb_width= (width+15)>>4;
- * int mv_stride= (mb_width << mv_sample_log2) + 1;
- * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];
- * @endcode
- * - encoding: Set by user.
- * - decoding: Set by libavcodec.
- *)
- //int16_t (*motion_val[2])[2];
- motion_val: array [0..1] of pointer;
- (**
- * macroblock type table
- * mb_type_base + mb_width + 2
- * - encoding: Set by user.
- * - decoding: Set by libavcodec.
- *)
- mb_type: PCuint;
- (**
- * log2 of the size of the block which a single vector in motion_val represents:
- * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)
- * - encoding: unused
- * - decoding: Set by libavcodec.
- *)
- motion_subsample_log2: byte;
- (**
- * for some private data of the user
- * - encoding: unused
- * - decoding: Set by user.
- *)
- opaque: pointer;
- (**
- * error
- * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.
- * - decoding: unused
- *)
- error: array [0..3] of cuint64;
- (**
- * type of the buffer (to keep track of who has to deallocate data[*])
- * - encoding: Set by the one who allocates it.
- * - decoding: Set by the one who allocates it.
- * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.
- *)
- type_: cint;
- (**
- * When decoding, this signals how much the picture must be delayed.
- * extra_delay = repeat_pict / (2*fps)
- * - encoding: unused
- * - decoding: Set by libavcodec.
- *)
- repeat_pict: cint;
- (**
- *
- *)
- qscale_type: cint;
- (**
- * The content of the picture is interlaced.
- * - encoding: Set by user.
- * - decoding: Set by libavcodec. (default 0)
- *)
- interlaced_frame: cint;
- (**
- * If the content is interlaced, is top field displayed first.
- * - encoding: Set by user.
- * - decoding: Set by libavcodec.
- *)
- top_field_first: cint;
- (**
- * Pan scan.
- * - encoding: Set by user.
- * - decoding: Set by libavcodec.
- *)
- pan_scan: PAVPanScan;
- (**
- * Tell user application that palette has changed from previous frame.
- * - encoding: ??? (no palette-enabled encoder yet)
- * - decoding: Set by libavcodec. (default 0).
- *)
- palette_has_changed: cint;
- (**
- * codec suggestion on buffer type if != 0
- * - encoding: unused
- * - decoding: Set by libavcodec. (before get_buffer() call)).
- *)
- buffer_hints: cint;
- (**
- * DCT coefficients
- * - encoding: unused
- * - decoding: Set by libavcodec.
- *)
- dct_coeff: PsmallInt;
- (**
- * motion reference frame index
- * the order in which these are stored can depend on the codec.
- * - encoding: Set by user.
- * - decoding: Set by libavcodec.
- *)
- ref_index: array [0..1] of PShortint;
-
- {$IF LIBAVCODEC_VERSION >= 51068000} // >= 51.68.0
- (**
- * reordered opaque 64bit number (generally a PTS) from AVCodecContext.reordered_opaque
- * output in AVFrame.reordered_opaque
- * - encoding: unused
- * - decoding: Read by user.
- *)
- reordered_opaque: cint64;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION = 52021000} // = 52.21.0
- (**
- * hardware accelerator private data (FFmpeg allocated)
- * - encoding: unused
- * - decoding: Set by libavcodec
- *)
- hwaccel_data_private: pointer;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52022000} // >= 52.22.0
- hwaccel_picture_private: pointer;
- {$IFEND}
-
- end;
-
- (**
- * main external API structure.
- * New fields can be added to the end with minor version bumps.
- * Removal, reordering and changes to existing fields require a major
- * version bump.
- * sizeof(AVCodecContext) must not be used outside libav*.
- *)
- TAVCodecContext = record {720}
- (**
- * information on struct for av_log
- * - set by avcodec_alloc_context
- *)
- av_class: PAVClass;
- (**
- * the average bitrate
- * - encoding: Set by user; unused for constant quantizer encoding.
- * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
- *)
- bit_rate: cint;
-
- (**
- * number of bits the bitstream is allowed to diverge from the reference.
- * the reference can be CBR (for CBR pass1) or VBR (for pass2)
- * - encoding: Set by user; unused for constant quantizer encoding.
- * - decoding: unused
- *)
- bit_rate_tolerance: cint;
-
- (**
- * CODEC_FLAG_*.
- * - encoding: Set by user.
- * - decoding: Set by user.
- *)
- flags: cint;
-
- (**
- * Some codecs need additional format info. It is stored here.
- * If any muxer uses this then ALL demuxers/parsers AND encoders for the
- * specific codec MUST set it correctly otherwise stream copy breaks.
- * In general use of this field by muxers is not recommanded.
- * - encoding: Set by libavcodec.
- * - decoding: Set by libavcodec. (FIXME: Is this OK?)
- *)
- sub_id: cint;
-
- (**
- * Motion estimation algorithm used for video coding.
- * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
- * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific]
- * - encoding: MUST be set by user.
- * - decoding: unused
- *)
- me_method: cint;
-
- (**
- * some codecs need / can use extradata like Huffman tables.
- * mjpeg: Huffman tables
- * rv10: additional flags
- * mpeg4: global headers (they can be in the bitstream or here)
- * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
- * than extradata_size to avoid prolems if it is read with the bitstream reader.
- * The bytewise contents of extradata must not depend on the architecture or CPU endianness.
- * - encoding: Set/allocated/freed by libavcodec.
- * - decoding: Set/allocated/freed by user.
- *)
- extradata: pbyte;
- extradata_size: cint;
-
- (**
- * This is the fundamental unit of time (in seconds) in terms
- * of which frame timestamps are represented. For fixed-fps content,
- * timebase should be 1/framerate and timestamp increments should be
- * identically 1.
- * - encoding: MUST be set by user.
- * - decoding: Set by libavcodec.
- *)
- time_base: TAVRational;
-
- (* video only *)
- (**
- * picture width / height.
- * - encoding: MUST be set by user.
- * - decoding: Set by libavcodec.
- * Note: For compatibility it is possible to set this instead of
- * coded_width/height before decoding.
- *)
- width, height: cint;
-
- (**
- * the number of pictures in a group of pictures, or 0 for intra_only
- * - encoding: Set by user.
- * - decoding: unused
- *)
- gop_size: cint;
-
- (**
- * Pixel format, see PIX_FMT_xxx.
- * 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;
-
- (**
- * Frame rate emulation. If not zero, the lower layer (i.e. format handler)
- * has to read frames at native frame rate.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- rate_emu: cint;
-
- (**
- * If non NULL, 'draw_horiz_band' is called by the libavcodec
- * decoder to draw a horizontal band. It improves cache usage. Not
- * all codecs can do that. You must check the codec capabilities
- * beforehand.
- * The function is also used by hardware acceleration APIs.
- * It is called at least once during frame decoding to pass
- * the data needed for hardware render.
- * In that mode instead of pixel data, AVFrame points to
- * a structure specific to the acceleration API. The application
- * reads the structure and can change some fields to indicate progress
- * or mark state.
- * - encoding: unused
- * - decoding: Set by user.
- * @param height the height of the slice
- * @param y the y position of the slice
- * @param type 1->top field, 2->bottom field, 3->frame
- * @param offset offset into the AVFrame.data from which the slice should be read
- *)
- draw_horiz_band: procedure (s: PAVCodecContext;
- src: {const} PAVFrame; offset: PQuadIntArray;
- y: cint; type_: cint; height: cint); cdecl;
-
- (* audio only *)
- sample_rate: cint; ///< samples per second
- channels: cint; ///< number of audio channels
-
- (**
- * audio sample format
- * - encoding: Set by user.
- * - decoding: Set by libavcodec.
- *)
- sample_fmt: TSampleFormat; ///< sample format
-
- (* The following data should not be initialized. *)
- (**
- * Samples per packet, initialized when calling 'init'.
- *)
- frame_size: cint;
- frame_number: cint; ///< audio or video frame number
-{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
- real_pict_num: cint; ///< returns the real picture number of previous encoded frame
-{$IFEND}
-
- (**
- * Number of frames the decoded output will be delayed relative to
- * the encoded input.
- * - encoding: Set by libavcodec.
- * - decoding: unused
- *)
- delay: cint;
-
- (* - encoding parameters *)
- qcompress: cfloat; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
- qblur: cfloat; ///< amount of qscale smoothing over time (0.0-1.0)
-
- (**
- * minimum quantizer
- * - encoding: Set by user.
- * - decoding: unused
- *)
- qmin: cint;
-
- (**
- * maximum quantizer
- * - encoding: Set by user.
- * - decoding: unused
- *)
- qmax: cint;
-
- (**
- * maximum quantizer difference between frames
- * - encoding: Set by user.
- * - decoding: unused
- *)
- max_qdiff: cint;
-
- (**
- * maximum number of B-frames between non-B-frames
- * Note: The output will be delayed by max_b_frames+1 relative to the input.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- max_b_frames: cint;
-
- (**
- * qscale factor between IP and B-frames
- * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
- * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
- * - encoding: Set by user.
- * - decoding: unused
- *)
- b_quant_factor: cfloat;
-
- (** obsolete FIXME remove *)
- rc_strategy: cint;
-
- b_frame_strategy: cint;
-
- (**
- * hurry up amount
- * - encoding: unused
- * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header
- * @deprecated Deprecated in favor of skip_idct and skip_frame.
- *)
- hurry_up: cint;
-
- codec: PAVCodec;
-
- priv_data: pointer;
-
- {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
- (* unused, FIXME remove*)
- rtp_mode: cint;
- {$IFEND}
-
- rtp_payload_size: cint; (* The size of the RTP payload: the coder will *)
- (* do it's best to deliver a chunk with size *)
- (* below rtp_payload_size, the chunk will start *)
- (* with a start code on some codecs like H.263 *)
- (* This doesn't take account of any particular *)
- (* headers inside the transmited RTP payload *)
-
-
- (* The RTP callback: This function is called *)
- (* every time the encoder has a packet to send *)
- (* Depends on the encoder if the data starts *)
- (* with a Start Code (it should) H.263 does. *)
- (* mb_nb contains the number of macroblocks *)
- (* encoded in the RTP payload *)
- rtp_callback: procedure (avctx: PAVCodecContext; data: pointer;
- size: cint; mb_nb: cint); cdecl;
-
- (* statistics, used for 2-pass encoding *)
- mv_bits: cint;
- header_bits: cint;
- i_tex_bits: cint;
- p_tex_bits: cint;
- i_count: cint;
- p_count: cint;
- skip_count: cint;
- misc_bits: cint;
-
- (**
- * number of bits used for the previously encoded frame
- * - encoding: Set by libavcodec.
- * - decoding: unused
- *)
- frame_bits: cint;
-
- (**
- * Private data of the user, can be used to carry app specific stuff.
- * - encoding: Set by user.
- * - decoding: Set by user.
- *)
- opaque: pointer;
-
- codec_name: array [0..31] of AnsiChar;
-{$IF LIBAVCODEC_VERSION < 52064000} // < 52.64.0
- codec_type: TCodecType; (* see CODEC_TYPE_xxx *)
-{$ELSE}
- codec_type: TAVMediaType; (* see AVMEDIA_TYPE_xxx *)
-{$IFEND}
- codec_id: TCodecID; (* see CODEC_ID_xxx *)
-
- (**
- * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
- * This is used to work around some encoder bugs.
- * A demuxer should set this to what is stored in the field used to identify the codec.
- * If there are multiple such fields in a container then the demuxer should choose the one
- * which maximizes the information about the used codec.
- * If the codec tag field in a container is larger then 32 bits then the demuxer should
- * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
- * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
- * first.
- * - encoding: Set by user, if not then the default based on codec_id will be used.
- * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
- *)
- codec_tag: cuint;
-
- (**
- * Work around bugs in encoders which sometimes cannot be detected automatically.
- * - encoding: Set by user
- * - decoding: Set by user
- *)
- workaround_bugs: cint;
-
- (**
- * luma single coefficient elimination threshold
- * - encoding: Set by user.
- * - decoding: unused
- *)
- luma_elim_threshold: cint;
-
- (**
- * chroma single coeff elimination threshold
- * - encoding: Set by user.
- * - decoding: unused
- *)
- chroma_elim_threshold: cint;
-
- (**
- * strictly follow the standard (MPEG4, ...).
- * - encoding: Set by user.
- * - decoding: Set by user.
- * Setting this to STRICT or higher means the encoder and decoder will
- * generally do stupid things, 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: PByteArray;
-
- (**
- * pass2 encoding statistics input buffer
- * Concatenated stuff from stats_out of pass1 should be placed here.
- * - encoding: Allocated/set/freed by user.
- * - decoding: unused
- *)
- stats_in: PByteArray;
-
- (**
- * ratecontrol qmin qmax limiting method
- * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- rc_qsquish: cfloat;
-
- rc_qmod_amp: cfloat;
- rc_qmod_freq: cint;
-
- (**
- * ratecontrol override, see RcOverride
- * - encoding: Allocated/set/freed by user.
- * - decoding: unused
- *)
- rc_override: PRcOverride;
- rc_override_count: cint;
-
- (**
- * rate control equation
- * - encoding: Set by user
- * - decoding: unused
- *)
- rc_eq: {const} PByteArray;
-
- (**
- * maximum bitrate
- * - encoding: Set by user.
- * - decoding: unused
- *)
- rc_max_rate: cint;
-
- (**
- * minimum bitrate
- * - encoding: Set by user.
- * - decoding: unused
- *)
- rc_min_rate: cint;
-
- (**
- * decoder bitstream buffer size
- * - encoding: Set by user.
- * - decoding: unused
- *)
- rc_buffer_size: cint;
- rc_buffer_aggressivity: cfloat;
-
- (**
- * qscale factor between P and I-frames
- * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
- * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
- * - encoding: Set by user.
- * - decoding: unused
- *)
- i_quant_factor: cfloat;
-
- (**
- * qscale offset between P and I-frames
- * - encoding: Set by user.
- * - decoding: unused
- *)
- i_quant_offset: cfloat;
-
- (**
- * initial complexity for pass1 ratecontrol
- * - encoding: Set by user.
- * - decoding: unused
- *)
- rc_initial_cplx: cfloat;
-
- (**
- * DCT algorithm, see FF_DCT_* below
- * - encoding: Set by user.
- * - decoding: unused
- *)
- dct_algo: cint;
-
- (**
- * luminance masking (0-> disabled)
- * - encoding: Set by user.
- * - decoding: unused
- *)
- lumi_masking: cfloat;
-
- (**
- * temporary complexity masking (0-> disabled)
- * - encoding: Set by user.
- * - decoding: unused
- *)
- temporal_cplx_masking: cfloat;
-
- (**
- * spatial complexity masking (0-> disabled)
- * - encoding: Set by user.
- * - decoding: unused
- *)
- spatial_cplx_masking: cfloat;
-
- (**
- * p block masking (0-> disabled)
- * - encoding: Set by user.
- * - decoding: unused
- *)
- p_masking: cfloat;
-
- (**
- * darkness masking (0-> disabled)
- * - encoding: Set by user.
- * - decoding: unused
- *)
- dark_masking: cfloat;
-
- {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
- (* for binary compatibility *)
- unused: cint;
- {$IFEND}
-
- (**
- * IDCT algorithm, see FF_IDCT_* below.
- * - encoding: Set by user.
- * - decoding: Set by user.
- *)
- idct_algo: cint;
-
- (**
- * slice count
- * - encoding: Set by libavcodec.
- * - decoding: Set by user (or 0).
- *)
- slice_count: cint;
-
- (**
- * slice offsets in the frame in bytes
- * - encoding: Set/allocated by libavcodec.
- * - decoding: Set/allocated by user (or NULL).
- *)
- slice_offset: PCint;
-
- (**
- * error concealment flags
- * - encoding: unused
- * - decoding: Set by user.
- *)
- error_concealment: cint;
-
- (**
- * dsp_mask could be add used to disable unwanted CPU features
- * CPU features (i.e. MMX, SSE. ...)
- *
- * With the FORCE flag you may instead enable given CPU features.
- * (Dangerous: Usable in case of misdetection, improper usage however will
- * result into program crash.)
- *)
- dsp_mask: cuint;
-
- (**
- * bits per sample/pixel from the demuxer (needed for huffyuv).
- * - encoding: Set by libavcodec.
- * - decoding: Set by user.
- *)
- bits_per_coded_sample: cint;
-
- (**
- * prediction method (needed for huffyuv)
- * - encoding: Set by user.
- * - decoding: unused
- *)
- prediction_method: cint;
-
- (**
- * sample aspect ratio (0 if unknown)
- * That is the width of a pixel divided by the height of the pixel.
- * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
- * - encoding: Set by user.
- * - decoding: Set by libavcodec.
- *)
- sample_aspect_ratio: TAVRational;
-
- (**
- * the picture in the bitstream
- * - encoding: Set by libavcodec.
- * - decoding: Set by libavcodec.
- *)
- coded_frame: PAVFrame;
-
- (**
- * debug
- * - encoding: Set by user.
- * - decoding: Set by user.
- *)
- debug: cint;
-
- (**
- * debug
- * - encoding: Set by user.
- * - decoding: Set by user.
- *)
- debug_mv: cint;
-
- (**
- * error
- * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
- * - decoding: unused
- *)
- error: array [0..3] of cuint64;
-
- (**
- * minimum MB quantizer
- * - encoding: unused
- * - decoding: unused
- *)
- mb_qmin: cint;
-
- (**
- * maximum MB quantizer
- * - encoding: unused
- * - decoding: unused
- *)
- mb_qmax: cint;
-
- (**
- * motion estimation comparison function
- * - encoding: Set by user.
- * - decoding: unused
- *)
- me_cmp: cint;
-
- (**
- * subpixel motion estimation comparison function
- * - encoding: Set by user.
- * - decoding: unused
- *)
- me_sub_cmp: cint;
- (**
- * macroblock comparison function (not supported yet)
- * - encoding: Set by user.
- * - decoding: unused
- *)
- mb_cmp: cint;
- (**
- * interlaced DCT comparison function
- * - encoding: Set by user.
- * - decoding: unused
- *)
- ildct_cmp: cint;
-
- (**
- * ME diamond size & shape
- * - encoding: Set by user.
- * - decoding: unused
- *)
- dia_size: cint;
-
- (**
- * amount of previous MV predictors (2a+1 x 2a+1 square)
- * - encoding: Set by user.
- * - decoding: unused
- *)
- last_predictor_count: cint;
-
- (**
- * prepass for motion estimation
- * - encoding: Set by user.
- * - decoding: unused
- *)
- pre_me: cint;
-
- (**
- * motion estimation prepass comparison function
- * - encoding: Set by user.
- * - decoding: unused
- *)
- me_pre_cmp: cint;
-
- (**
- * ME prepass diamond size & shape
- * - encoding: Set by user.
- * - decoding: unused
- *)
- pre_dia_size: cint;
-
- (**
- * subpel ME quality
- * - encoding: Set by user.
- * - decoding: unused
- *)
- me_subpel_quality: cint;
-
- (**
- * callback to negotiate the pixelFormat
- * @param fmt is the list of formats which are supported by the codec,
- * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
- * The first is always the native one.
- * @return the chosen format
- * - encoding: unused
- * - decoding: Set by user, if not set the native format will be chosen.
- *)
- get_format: function (s: PAVCodecContext; fmt: {const} PAVPixelFormat): TAVPixelFormat; cdecl;
-
- (**
- * DTG active format information (additional aspect ratio
- * information only used in DVB MPEG-2 transport streams)
- * 0 if not set.
- *
- * - encoding: unused
- * - decoding: Set by decoder.
- *)
- dtg_active_format: cint;
-
- (**
- * maximum motion estimation search range in subpel units
- * If 0 then no limit.
- *
- * - encoding: Set by user.
- * - decoding: unused
- *)
- me_range: cint;
-
- (**
- * intra quantizer bias
- * - encoding: Set by user.
- * - decoding: unused
- *)
- intra_quant_bias: cint;
-
- (**
- * inter quantizer bias
- * - encoding: Set by user.
- * - decoding: unused
- *)
- inter_quant_bias: cint;
-
- (**
- * color table ID
- * - encoding: unused
- * - decoding: Which clrtable should be used for 8bit RGB images.
- * Tables have to be stored somewhere. FIXME
- *)
- color_table_id: cint;
-
- (**
- * internal_buffer count
- * Don't touch, used by libavcodec default_get_buffer().
- *)
- internal_buffer_count: cint;
-
- (**
- * internal_buffers
- * Don't touch, used by libavcodec default_get_buffer().
- *)
- internal_buffer: pointer;
-
- (**
- * Global quality for codecs which cannot change it per frame.
- * This should be proportional to MPEG-1/2/4 qscale.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- global_quality: cint;
-
- (**
- * coder type
- * - encoding: Set by user.
- * - decoding: unused
- *)
- coder_type: cint;
-
- (**
- * context model
- * - encoding: Set by user.
- * - decoding: unused
- *)
- context_model: cint;
-
- {
- (**
- *
- * - encoding: unused
- * - decoding: Set by user.
- *)
- realloc: function (s: PAVCodecContext; buf: Pbyte; buf_size: cint): Pbyte; cdecl;
- }
-
- (**
- * slice flags
- * - encoding: unused
- * - decoding: Set by user.
- *)
- slice_flags: cint;
-
- (**
- * XVideo Motion Acceleration
- * - encoding: forbidden
- * - decoding: set by decoder
- *)
- xvmc_acceleration: cint;
-
- (**
- * macroblock decision mode
- * - encoding: Set by user.
- * - decoding: unused
- *)
- mb_decision: cint;
-
- (**
- * custom intra quantization matrix
- * - encoding: Set by user, can be NULL.
- * - decoding: Set by libavcodec.
- *)
- intra_matrix: PWord;
-
- (**
- * custom inter quantization matrix
- * - encoding: Set by user, can be NULL.
- * - decoding: Set by libavcodec.
- *)
- inter_matrix: PWord;
-
- (**
- * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
- * This is used to work around some encoder bugs.
- * - encoding: unused
- * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
- *)
- stream_codec_tag: array [0..3] of AnsiChar; //cuint;
-
- (**
- * scene change detection threshold
- * 0 is default, larger means fewer detected scene changes.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- scenechange_threshold: cint;
-
- (**
- * minimum Lagrange multipler
- * - encoding: Set by user.
- * - decoding: unused
- *)
- lmin: cint;
-
- (**
- * maximum Lagrange multipler
- * - encoding: Set by user.
- * - decoding: unused
- *)
- lmax: cint;
-
- (**
- * palette control structure
- * - encoding: ??? (no palette-enabled encoder yet)
- * - decoding: Set by user.
- *)
- palctrl: PAVPaletteControl;
-
- (**
- * noise reduction strength
- * - encoding: Set by user.
- * - decoding: unused
- *)
- noise_reduction: cint;
-
- (**
- * Called at the beginning of a frame to get cr buffer for it.
- * Buffer type (size, hints) must be the same. libavcodec won't check it.
- * libavcodec will pass previous buffer in pic, function should return
- * same buffer or new buffer with old frame "painted" into it.
- * If pic.data[0] == NULL must behave like get_buffer().
- * if CODEC_CAP_DR1 is not set then reget_buffer() must call
- * avcodec_default_reget_buffer() instead of providing buffers allocated by
- * some other means.
- * - encoding: unused
- * - decoding: Set by libavcodec, user can override
- *)
- reget_buffer: function (c: PAVCodecContext; pic: PAVFrame): cint; cdecl;
-
- (**
- * Number of bits which should be loaded into the rc buffer before decoding starts.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- rc_initial_buffer_occupancy: cint;
-
- (**
- *
- * - encoding: Set by user.
- * - decoding: unused
- *)
- inter_threshold: cint;
-
- (**
- * CODEC_FLAG2_*
- * - encoding: Set by user.
- * - decoding: Set by user.
- *)
- flags2: cint;
-
- (**
- * Simulates errors in the bitstream to test error concealment.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- error_rate: cint;
-
- (**
- * MP3 antialias algorithm, see FF_AA_* below.
- * - encoding: unused
- * - decoding: Set by user.
- *)
- antialias_algo: cint;
-
- (**
- * quantizer noise shaping
- * - encoding: Set by user.
- * - decoding: unused
- *)
- quantizer_noise_shaping: cint;
-
- (**
- * thread count
- * is used to decide how many independent tasks should be passed to execute()
- * - encoding: Set by user.
- * - decoding: Set by user.
- *)
- thread_count: cint;
-
- (**
- * The codec may call this to execute several independent things.
- * It will return only after finishing all tasks.
- * The user may replace this with some multithreaded implementation,
- * the default implementation will execute the parts serially.
- * @param count the number of things to execute
- * - encoding: Set by libavcodec, user can override.
- * - decoding: Set by libavcodec, user can override.
- *)
- {$IF LIBAVCODEC_VERSION < 52004000} // < 52.4.0
- execute: function (c: PAVCodecContext; func: TExecuteFunc; arg: PPointer; ret: PCint; count: cint): cint; cdecl;
- {$ELSE}
- execute: function (c: PAVCodecContext; func: TExecuteFunc; arg: Pointer; ret: PCint; count: cint; size: cint): cint; cdecl;
- {$IFEND}
-
- (**
- * thread opaque
- * Can be used by execute() to store some per AVCodecContext stuff.
- * - encoding: set by execute()
- * - decoding: set by execute()
- *)
- thread_opaque: pointer;
-
- (**
- * Motion estimation threshold below which no motion estimation is
- * performed, but instead the user specified motion vectors are used.
- *
- * - encoding: Set by user.
- * - decoding: unused
- *)
- me_threshold: cint;
-
- (**
- * Macroblock threshold below which the user specified macroblock types will be used.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- mb_threshold: cint;
-
- (**
- * precision of the intra DC coefficient - 8
- * - encoding: Set by user.
- * - decoding: unused
- *)
- intra_dc_precision: cint;
-
- (**
- * noise vs. sse weight for the nsse comparsion function
- * - encoding: Set by user.
- * - decoding: unused
- *)
- nsse_weight: cint;
-
- (**
- * Number of macroblock rows at the top which are skipped.
- * - encoding: unused
- * - decoding: Set by user.
- *)
- skip_top: cint;
-
- (**
- * Number of macroblock rows at the bottom which are skipped.
- * - encoding: unused
- * - decoding: Set by user.
- *)
- skip_bottom: cint;
-
- (**
- * profile
- * - encoding: Set by user.
- * - decoding: Set by libavcodec.
- *)
- profile: cint;
-
- (**
- * level
- * - encoding: Set by user.
- * - decoding: Set by libavcodec.
- *)
- level: cint;
-
- (**
- * low resolution decoding, 1-> 1/2 size, 2->1/4 size
- * - encoding: unused
- * - decoding: Set by user.
- *)
- lowres: cint;
-
- (**
- * Bitstream width / height, may be different from width/height if lowres
- * or other things are used.
- * - encoding: unused
- * - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
- *)
- coded_width, coded_height: cint;
-
- (**
- * frame skip threshold
- * - encoding: Set by user.
- * - decoding: unused
- *)
- frame_skip_threshold: cint;
-
- (**
- * frame skip factor
- * - encoding: Set by user.
- * - decoding: unused
- *)
- frame_skip_factor: cint;
-
- (**
- * frame skip exponent
- * - encoding: Set by user.
- * - decoding: unused
- *)
- frame_skip_exp: cint;
-
- (**
- * frame skip comparison function
- * - encoding: Set by user.
- * - decoding: unused
- *)
- frame_skip_cmp: cint;
-
- (**
- * Border processing masking, raises the quantizer for mbs on the borders
- * of the picture.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- border_masking: cfloat;
-
- (**
- * minimum MB lagrange multipler
- * - encoding: Set by user.
- * - decoding: unused
- *)
- mb_lmin: cint;
-
- (**
- * maximum MB lagrange multipler
- * - encoding: Set by user.
- * - decoding: unused
- *)
- mb_lmax: cint;
-
- (**
- *
- * - encoding: Set by user.
- * - decoding: unused
- *)
- me_penalty_compensation: cint;
-
- (**
- *
- * - encoding: unused
- * - decoding: Set by user.
- *)
- skip_loop_filter: TAVDiscard;
-
- (**
- *
- * - encoding: unused
- * - decoding: Set by user.
- *)
- skip_idct: TAVDiscard;
-
- (**
- *
- * - encoding: unused
- * - decoding: Set by user.
- *)
- skip_frame: TAVDiscard;
-
- (**
- *
- * - encoding: Set by user.
- * - decoding: unused
- *)
- bidir_refine: cint;
-
- (**
- *
- * - encoding: Set by user.
- * - decoding: unused
- *)
- brd_scale: cint;
-
- (**
- * constant rate factor - quality-based VBR - values ~correspond to qps
- * - encoding: Set by user.
- * - decoding: unused
- *)
- {$IF LIBAVCODEC_VERSION >= 51021000} // 51.21.0
- crf: cfloat;
- {$ELSE}
- crf: cint;
- {$IFEND}
-
- (**
- * constant quantization parameter rate control method
- * - encoding: Set by user.
- * - decoding: unused
- *)
- cqp: cint;
-
- (**
- * minimum GOP size
- * - encoding: Set by user.
- * - decoding: unused
- *)
- keyint_min: cint;
-
- (**
- * number of reference frames
- * - encoding: Set by user.
- * - decoding: Set by lavc.
- *)
- refs: cint;
-
- (**
- * chroma qp offset from luma
- * - encoding: Set by user.
- * - decoding: unused
- *)
- chromaoffset: cint;
-
- (**
- * Influences how often B-frames are used.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- bframebias: cint;
-
- (**
- * trellis RD quantization
- * - encoding: Set by user.
- * - decoding: unused
- *)
- trellis: cint;
-
- (**
- * Reduce fluctuations in qp (before curve compression).
- * - encoding: Set by user.
- * - decoding: unused
- *)
- complexityblur: cfloat;
-
- (**
- * in-loop deblocking filter alphac0 parameter
- * alpha is in the range -6...6
- * - encoding: Set by user.
- * - decoding: unused
- *)
- deblockalpha: cint;
-
- (**
- * in-loop deblocking filter beta parameter
- * beta is in the range -6...6
- * - encoding: Set by user.
- * - decoding: unused
- *)
- deblockbeta: cint;
-
- (**
- * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
- * - encoding: Set by user.
- * - decoding: unused
- *)
- partitions: cint;
-
- (**
- * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto)
- * - encoding: Set by user.
- * - decoding: unused
- *)
- directpred: cint;
-
- (**
- * Audio cutoff bandwidth (0 means "automatic")
- * - encoding: Set by user.
- * - decoding: unused
- *)
- cutoff: cint;
-
- (**
- * Multiplied by qscale for each frame and added to scene_change_score.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- scenechange_factor: cint;
-
- (**
- *
- * Note: Value depends upon the compare function used for fullpel ME.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- mv0_threshold: cint;
-
- (**
- * Adjusts sensitivity of b_frame_strategy 1.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- b_sensitivity: cint;
-
- (**
- * - encoding: Set by user.
- * - decoding: unused
- *)
- compression_level: cint;
-
- {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
- (**
- * Sets whether to use LPC mode - used by FLAC encoder.
- * - encoding: Set by user.
- * - decoding: unused
- * @deprecated Deprecated in favor of lpc_type and lpc_passes.
- *)
- use_lpc: cint;
- {$IFEND}
-
- (**
- * LPC coefficient precision - used by FLAC encoder
- * - encoding: Set by user.
- * - decoding: unused
- *)
- lpc_coeff_precision: cint;
-
- (**
- * - encoding: Set by user.
- * - decoding: unused
- *)
- min_prediction_order: cint;
-
- (**
- * - encoding: Set by user.
- * - decoding: unused
- *)
- max_prediction_order: cint;
-
- (**
- * search method for selecting prediction order
- * - encoding: Set by user.
- * - decoding: unused
- *)
- prediction_order_method: cint;
-
- (**
- * - encoding: Set by user.
- * - decoding: unused
- *)
- min_partition_order: cint;
-
- (**
- * - encoding: Set by user.
- * - decoding: unused
- *)
- max_partition_order: cint;
-
- {$IF LIBAVCODEC_VERSION >= 51026000} // 51.26.0
- (**
- * GOP timecode frame start number, in non drop frame format
- * - encoding: Set by user.
- * - decoding: unused
- *)
- timecode_frame_start: cint64;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 51042000} // 51.42.0
- {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
- (**
- * Decoder should decode to this many channels if it can (0 for default)
- * - encoding: unused
- * - decoding: Set by user.
- * @deprecated Deprecated in favor of request_channel_layout.
- *)
- request_channels: cint;
- {$IFEND}
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION > 51049000} // > 51.49.0
- (**
- * Percentage of dynamic range compression to be applied by the decoder.
- * The default value is 1.0, corresponding to full compression.
- * - encoding: unused
- * - decoding: Set by user.
- *)
- drc_scale: cfloat;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 51068000} // 51.68.0
- (**
- * opaque 64bit number (generally a PTS) that will be reordered and
- * output in AVFrame.reordered_opaque
- * - encoding: unused
- * - decoding: Set by user.
- *)
- reordered_opaque: cint64;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 51069000} // 51.69.0
- (**
- * Bits per sample/pixel of internal libavcodec pixel/sample format.
- * This field is applicable only when sample_fmt is SAMPLE_FMT_S32.
- * - encoding: set by user.
- * - decoding: set by libavcodec.
- *)
- bits_per_raw_sample: cint;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52002000} // 52.2.0
- (**
- * Audio channel layout.
- * - encoding: set by user.
- * - decoding: set by libavcodec.
- *)
- channel_layout: cint64;
-
- (**
- * Request decoder to use this channel layout if it can (0 for default)
- * - encoding: unused
- * - decoding: Set by user.
- *)
- request_channel_layout: cint64;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52004000} // >= 52.4.0
- (**
- * Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow.
- * - encoding: Set by user.
- * - decoding: unused.
- *)
- rc_max_available_vbv_use: cfloat;
-
- (**
- * Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow.
- * - encoding: Set by user.
- * - decoding: unused.
- *)
- rc_min_vbv_overflow_use: cfloat;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52018000} // >= 52.18.0
- (**
- * Hardware accelerator in use
- * - encoding: unused.
- * - decoding: Set by libavcodec
- *)
- hwaccel: PAVHWAccel;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52020000} // >= 52.20.0
- (**
- * For some codecs, the time base is closer to the field rate than the frame rate.
- * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration
- * if no telecine is used ...
- *
- * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2.
- *)
- ticks_per_frame: cint;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52021000} // >= 52.21.0
- (**
- * Hardware accelerator context.
- * For some hardware accelerators, a global context needs to be
- * provided by the user. In that case, this holds display-dependent
- * data FFmpeg cannot instantiate itself. Please refer to the
- * FFmpeg HW accelerator documentation to know how to fill this
- * is. e.g. for VA API, this is a struct vaapi_context.
- * - encoding: unused
- * - decoding: Set by user
- *)
- hwaccel_context: pointer;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52028000} // >= 52.28.0
- (**
- * Chromaticity coordinates of the source primaries.
- * - encoding: Set by user
- * - decoding: Set by libavcodec
- *)
- color_primaries: TAVColorPrimaries;
-
- (**
- * Color Transfer Characteristic.
- * - encoding: Set by user
- * - decoding: Set by libavcodec
- *)
- color_trc: TAVColorTransferCharacteristic;
-
- (**
- * YUV colorspace type.
- * - encoding: Set by user
- * - decoding: Set by libavcodec
- *)
- colorspace: TAVColorSpace;
-
- (**
- * MPEG vs JPEG YUV range.
- * - encoding: Set by user
- * - decoding: Set by libavcodec
- *)
- color_range: TAVColorRange;
-
- (**
- * This defines the location of chroma samples.
- * - encoding: Set by user
- * - decoding: Set by libavcodec
- *)
- chroma_sample_location: TAVChromaLocation;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52037000} // >= 52.37.0
- (**
- * The codec may call this to execute several independent things.
- * It will return only after finishing all tasks.
- * The user may replace this with some multithreaded implementation,
- * the default implementation will execute the parts serially.
- * Also see avcodec_thread_init and e.g. the --enable-pthread configure option.
- * @param c context passed also to func
- * @param count the number of things to execute
- * @param arg2 argument passed unchanged to func
- * @param ret return values of executed functions, must have space for "count" values. May be NULL.
- * @param func function that will be called count times, with jobnr from 0 to count-1.
- * threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no
- * two instances of func executing at the same time will have the same threadnr.
- * @return always 0 currently, but code should handle a future improvement where when any call to func
- * returns < 0 no further calls to func may be done and < 0 is returned.
- * - encoding: Set by libavcodec, user can override.
- * - decoding: Set by libavcodec, user can override.
- *)
- execute2: function (c: PAVCodecContext; func: TExecute2Func; arg2: Pointer; ret: Pcint; count: cint): cint; cdecl;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52042000} // >= 52.42.0
- (**
- * explicit P-frame weighted prediction analysis method
- * 0: off
- * 1: fast blind weighting (one reference duplicate with -1 offset)
- * 2: smart weighting (full fade detection analysis)
- * - encoding: Set by user.
- * - decoding: unused
- *)
- weighted_p_pred: cint;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52061000} // >= 52.61.0
- (**
- * AQ mode
- * 0: Disabled
- * 1: Variance AQ (complexity mask)
- * 2: Auto-variance AQ (experimental)
- * - encoding: Set by user
- * - decoding: unused
- *)
- aq_mode: cint;
-
- (**
- * AQ strength
- * Reduces blocking and blurring in flat and textured areas.
- * - encoding: Set by user
- * - decoding: unused
- *)
- aq_strength: cfloat;
-
- (**
- * PSY RD
- * Strength of psychovisual optimization
- * - encoding: Set by user
- * - decoding: unused
- *)
- psy_rd: cfloat;
-
- (**
- * PSY trellis
- * Strength of psychovisual optimization
- * - encoding: Set by user
- * - decoding: unused
- *)
- psy_trellis: cfloat;
-
- (**
- * RC lookahead
- * Number of frames for frametype and ratecontrol lookahead
- * - encoding: Set by user
- * - decoding: unused
- *)
- rc_lookahead: cint;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52067000} // >= 52.67.0
- (**
- * Constant rate factor maximum
- * With CRF encoding mode and VBV restrictions enabled, prevents quality from being worse
- * than crf_max, even if doing so would violate VBV restrictions.
- * - encoding: Set by user.
- * - decoding: unused
- *)
- crf_max: cfloat;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52067002} // >= 52.67.2
- log_level_offset: cint;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52083000} // >= 52.83.0
- (**
- * Determines which LPC analysis algorithm to use.
- * - encoding: Set by user
- * - decoding: unused
- *)
- lpc_type: TAVLPCType;
-
- (**
- * Number of passes to use for Cholesky factorization during LPC analysis
- * - encoding: Set by user
- * - decoding: unused
- *)
- lpc_passes: cint;
- {$IFEND}
- end; {TAVCodecContext}
-
-(**
- * AVCodec.
- *)
- TAVCodec = record
- name: PAnsiChar;
-{$IF LIBAVCODEC_VERSION < 52064000} // < 52.64.0
- type_: TCodecType;
-{$ELSE}
- type_: TAVMediaType;
-{$IFEND}
- id: TCodecID;
- priv_data_size: cint;
- init: function (avctx: PAVCodecContext): cint; cdecl; (* typo corretion by the Creative CAT *)
- encode: function (avctx: PAVCodecContext; buf: PByteArray; buf_size: cint; data: pointer): cint; cdecl;
- close: function (avctx: PAVCodecContext): cint; cdecl;
- decode: function (avctx: PAVCodecContext; outdata: pointer; var outdata_size: cint;
- {$IF LIBAVCODEC_VERSION < 52025000} // 52.25.0
- buf: {const} PByteArray; buf_size: cint): cint; cdecl;
- {$ELSE}
- avpkt: PAVPacket): cint; cdecl;
- {$IFEND}
- (**
- * Codec capabilities.
- * see CODEC_CAP_*
- *)
- capabilities: cint;
- next: PAVCodec;
- (**
- * Flush buffers.
- * Will be called when seeking
- *)
- flush: procedure (avctx: PAVCodecContext); cdecl;
- supported_framerates: {const} PAVRational; ///< array of supported framerates, or NULL if any, array is terminated by {0,0}
- pix_fmts: {const} PAVPixelFormat; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1
- {$IF LIBAVCODEC_VERSION >= 51055000} // 51.55.0
- (**
- * Descriptive name for the codec, meant to be more human readable than name.
- * You should use the NULL_IF_CONFIG_SMALL() macro to define it.
- *)
- long_name: {const} PAnsiChar;
- {$IFEND}
- {$IF LIBAVCODEC_VERSION >= 51056000} // 51.56.0
- supported_samplerates: {const} PCint; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0
- {$IFEND}
- {$IF LIBAVCODEC_VERSION >= 51062000} // 51.62.0
- sample_fmts: {const} PSampleFormatArray; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1
- {$IFEND}
- {$IF LIBAVCODEC_VERSION >= 52002000} // 52.2.0
- channel_layouts: {const} PCint64; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0
- {$IFEND}
- {$IF LIBAVCODEC_VERSION >= 52080000} // 52.80.0
- max_lowres: byte; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0
- {$IFEND}
- end;
-
-{$IF LIBAVCODEC_VERSION >= 52018000} // 52.18.0
-(**
- * AVHWAccel.
- *)
- TAVHWAccel = record
- (**
- * Name of the hardware accelerated codec.
- * The name is globally unique among encoders and among decoders (but an
- * encoder and a decoder can share the same name).
- *)
- name: PAnsiChar;
-
-{$IF LIBAVCODEC_VERSION < 52064000} // < 52.64.0
- (**
- * Type of codec implemented by the hardware accelerator.
- *
- * See CODEC_TYPE_xxx
- *)
- type_: TCodecType;
-{$ELSE}
- (**
- * Type of codec implemented by the hardware accelerator.
- *
- * See AVMediaType_xxx
- *)
- type_: TAVMediaType;
-{$IFEND}
-
-
- (**
- * Codec implemented by the hardware accelerator.
- *
- * See CODEC_ID_xxx
- *)
- id: TCodecID;
-
- (**
- * Supported pixel format.
- *
- * Only hardware accelerated formats are supported here.
- *)
- pix_fmt: {const} PAVPixelFormat;
-
- (**
- * Hardware accelerated codec capabilities.
- * see FF_HWACCEL_CODEC_CAP_*
- *)
- capabilities: cint;
-
- next: PAVCodec;
-
- (**
- * Called at the beginning of each frame or field picture.
- *
- * Meaningful frame information (codec specific) is guaranteed to
- * be parsed at this point. This function is mandatory.
- *
- * Note that buf can be NULL along with buf_size set to 0.
- * Otherwise, this means the whole frame is available at this point.
- *
- * @param avctx the codec context
- * @param buf the frame data buffer base
- * @param buf_size the size of the frame in bytes
- * @return zero if successful, a negative value otherwise
- *)
- start_frame: function (avctx: PAVCodecContext;
- buf: PByteArray;
- buf_size: cint): cint; cdecl;
-
- (**
- * Callback for each slice.
- *
- * Meaningful slice information (codec specific) is guaranteed to
- * be parsed at this point. This function is mandatory.
- *
- * @param avctx the codec context
- * @param buf the slice data buffer base
- * @param buf_size the size of the slice in bytes
- * @return zero if successful, a negative value otherwise
- *)
- decode_slice: function (avctx: PAVCodecContext;
- buf: PByteArray;
- buf_size: cint): cint; cdecl;
-
- (**
- * Called at the end of each frame or field picture.
- *
- * The whole picture is parsed at this point and can now be sent
- * to the hardware accelerator. This function is mandatory.
- *
- * @param avctx the codec context
- * @return zero if successful, a negative value otherwise
- *)
- end_frame: function (avctx: PAVCodecContext): cint; cdecl;
-
-{$IF LIBAVCODEC_VERSION >= 52021000} // >= 52.21.0
- (**
- * Size of HW accelerator private data.
- *
- * Private data is allocated with av_mallocz() before
- * AVCodecContext.get_buffer() and deallocated after
- * AVCodecContext.release_buffer().
- *)
- priv_data_size: cint;
-{$IFEND}
-
- end;
-{$IFEND}
-
-(**
- * four components are given, that's all.
- * the last component is alpha
- *)
- PAVPicture = ^TAVPicture;
- TAVPicture = record
- data: array [0..3] of PByteArray;
- linesize: array [0..3] of cint; ///< number of bytes per line
- end;
-
-type
- TAVSubtitleType = (
- SUBTITLE_NONE,
-
- SUBTITLE_BITMAP, ///< A bitmap, pict will be set
-
- (**
- * Plain text, the text field must be set by the decoder and is
- * authoritative. ass and pict fields may contain approximations.
- *)
- SUBTITLE_TEXT,
-
- (**
- * Formatted text, the ass field must be set by the decoder and is
- * authoritative. pict and text fields may contain approximations.
- *)
- SUBTITLE_ASS
- );
-
-type
- PPAVSubtitleRect = ^PAVSubtitleRect;
- PAVSubtitleRect = ^TAVSubtitleRect;
- {$IF LIBAVCODEC_VERSION < 52010000} // < 52.10.0
- TAVSubtitleRect = record
- x: cuint16;
- y: cuint16;
- w: cuint16;
- h: cuint16;
- nb_colors: cuint16;
- linesize: cint;
- rgba_palette: PCuint32;
- bitmap: PCuint8;
- end;
- {$ELSE}
- TAVSubtitleRect = record
- x: cint; ///< top left corner of pict, undefined when pict is not set
- y: cint; ///< top left corner of pict, undefined when pict is not set
- w: cint; ///< width of pict, undefined when pict is not set
- h: cint; ///< height of pict, undefined when pict is not set
- nb_colors: cint; ///< number of colors in pict, undefined when pict is not set
-
- (**
- * data+linesize for the bitmap of this subtitle.
- * can be set for text/ass as well once they where rendered
- *)
- pict: TAVPicture;
- type_: TAVSubtitleType;
-
- text: PAnsiChar; ///< 0 terminated plain UTF-8 text
-
- (**
- * 0 terminated ASS/SSA compatible event line.
- * The pressentation of this is unaffected by the other values in this
- * struct.
- *)
- ass: PByteArray;
- end;
- {$IFEND}
-
- PPAVSubtitle = ^PAVSubtitle;
- PAVSubtitle = ^TAVSubtitle;
- TAVSubtitle = record
- format: cuint16; (* 0 = graphics *)
- start_display_time: cuint32; (* relative to packet pts, in ms *)
- end_display_time: cuint32; (* relative to packet pts, in ms *)
- num_rects: cuint;
- {$IF LIBAVCODEC_VERSION < 52010000} // < 52.10.0
- rects: PAVSubtitleRect;
- {$ELSE}
- rects: PPAVSubtitleRect;
- {$IFEND}
- {$IF LIBAVCODEC_VERSION >= 52032000} // >= 52.32.0
- pts: cint64; ///< Same as packet pts, in AV_TIME_BASE
- {$IFEND}
- end;
-
-{$IF LIBAVCODEC_VERSION >= 52025000} // 52.25.0
-{ packet functions }
-
-(**
- * @deprecated use NULL instead
- *)
-procedure av_destruct_packet_nofree(pkt: PAVPacket);
- cdecl; external av__codec;
-
-(*
- * Default packet destructor.
- *)
-procedure av_destruct_packet(pkt: PAVPacket);
- cdecl; external av__codec;
-
-(*
- * Initialize optional fields of a packet with default values.
- *
- * @param pkt packet
- *)
-procedure av_init_packet(var pkt: TAVPacket);
- cdecl; external av__codec;
-
-(*
- * Allocate the payload of a packet and initialize its fields with
- * default values.
- *
- * @param pkt packet
- * @param size wanted payload size
- * @return 0 if OK, AVERROR_xxx otherwise
- *)
-function av_new_packet(pkt: PAVPacket; size: cint): cint;
- cdecl; external av__codec;
-
-(*
- * Reduce packet size, correctly zeroing padding
- *
- * @param pkt packet
- * @param size new size
- *)
-procedure av_shrink_packet(pkt: PAVPacket; size: cint);
- cdecl; external av__codec;
-
-(*
- * @warning This is a hack - the packet memory allocation stuff is broken. The
- * packet is allocated if it was not really allocated.
- *)
-function av_dup_packet(pkt: PAVPacket): cint;
- cdecl; external av__codec;
-
-(*
- * Free a packet.
- *
- * @param pkt packet to free
- *)
-procedure av_free_packet(pkt: PAVPacket);
-{$IF LIBAVCODEC_VERSION >= 52028000} // 52.28.0
- cdecl; external av__codec;
-{$IFEND}
-{$IFEND}
-
-(* resample.c *)
-type
- PReSampleContext = pointer;
- PAVResampleContext = pointer;
- PImgReSampleContext = pointer;
-
-function audio_resample_init (output_channels: cint; input_channels: cint;
- output_rate: cint; input_rate: cint): PReSampleContext;
- cdecl; external av__codec;
-
-function audio_resample (s: PReSampleContext; output: PSmallint; input: PSmallint; nb_samples: cint): cint;
- cdecl; external av__codec;
-
-procedure audio_resample_close (s: PReSampleContext);
- cdecl; external av__codec;
-
-(**
- * 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;
-
-{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
-(* YUV420 format is assumed ! *)
-
-(**
- * @deprecated Use the software scaler (swscale) instead.
- *)
-function img_resample_init (output_width: cint; output_height: cint;
- input_width: cint; input_height: cint): PImgReSampleContext;
- cdecl; external av__codec; deprecated;
-
-(**
- * @deprecated Use the software scaler (swscale) instead.
- *)
-function img_resample_full_init (owidth: cint; oheight: cint;
- iwidth: cint; iheight: cint;
- topBand: cint; bottomBand: cint;
- leftBand: cint; rightBand: cint;
- padtop: cint; padbottom: cint;
- padleft: cint; padright: cint): PImgReSampleContext;
- cdecl; external av__codec; deprecated;
-
-(**
- * @deprecated Use the software scaler (swscale) instead.
- *)
-procedure img_resample (s: PImgReSampleContext; output: PAVPicture; input: {const} PAVPicture);
- cdecl; external av__codec; deprecated;
-
-(**
- * @deprecated Use the software scaler (swscale) instead.
- *)
-procedure img_resample_close (s: PImgReSampleContext);
- cdecl; external av__codec; deprecated;
-{$IFEND}
-
-(**
- * Allocate memory for a picture. Call avpicture_free to free it.
- *
- * @param picture the picture to be filled in.
- * @param pix_fmt the format of the picture.
- * @param width the width of the picture.
- * @param height the height of the picture.
- * @return Zero if successful, a negative value if not.
- *)
-function avpicture_alloc (picture: PAVPicture; pix_fmt: TAVPixelFormat;
- width: cint; height: cint): cint;
- cdecl; external av__codec;
-
-(**
- * Free a picture previously allocated by avpicture_alloc().
- *
- * @param picture the AVPicture to be freed
- *)
-procedure avpicture_free (picture: PAVPicture);
- cdecl; external av__codec;
-
-(**
- * Fill in the AVPicture fields.
- * The fields of the given AVPicture are filled in by using the 'ptr' address
- * which points to the image data buffer. Depending on the specified picture
- * format, one or multiple image data pointers and line sizes will be set.
- * If a planar format is specified, several pointers will be set pointing to
- * the different picture planes and the line sizes of the different planes
- * will be stored in the lines_sizes array.
- * Call with ptr == NULL to get the required size for the ptr buffer.
- *
- * @param picture AVPicture whose fields are to be filled in
- * @param ptr Buffer which will contain or contains the actual image data
- * @param pix_fmt The format in which the picture data is stored.
- * @param width the width of the image in pixels
- * @param height the height of the image in pixels
- * @return size of the image data in bytes
- *)
-function avpicture_fill (picture: PAVPicture; ptr: pointer;
- pix_fmt: TAVPixelFormat; width: cint; height: cint): cint;
- cdecl; external av__codec;
-
-function avpicture_layout (src: {const} PAVPicture; pix_fmt: TAVPixelFormat;
- width: cint; height: cint;
- dest: PByteArray; dest_size: cint): cint;
- cdecl; external av__codec;
-
-(**
- * Calculate the size in bytes that a picture of the given width and height
- * would occupy if stored in the given picture format.
- * Note that this returns the size of a compact representation as generated
- * by avpicture_layout, which can be smaller than the size required for e.g.
- * avpicture_fill.
- *
- * @param pix_fmt the given picture format
- * @param width the width of the image
- * @param height the height of the image
- * @return Image data size in bytes or -1 on error (e.g. too large dimensions).
- *)
-function avpicture_get_size (pix_fmt: TAVPixelFormat; width: cint; height: cint): cint;
- cdecl; external av__codec;
-
-procedure avcodec_get_chroma_sub_sample (pix_fmt: TAVPixelFormat; var h_shift: cint; var v_shift: cint);
- cdecl; external av__codec;
-
-(**
- * Return the pixel format corresponding to the name name.
- *
- * If there is no pixel format with name name, then look for a
- * pixel format with the name corresponding to the native endian
- * format of name.
- * For example in a little-endian system, first look for "gray16",
- * then for "gray16le".
- *
- * Finally if no pixel format has been found, return PIX_FMT_NONE.
- *)
-function avcodec_get_pix_fmt_name(pix_fmt: TAVPixelFormat): PAnsiChar;
- cdecl; external av__codec;
-
-procedure avcodec_set_dimensions(s: PAVCodecContext; width: cint; height: cint);
- cdecl; external av__codec;
-
-{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
-(**
- * 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;
-{$IF LIBAVCODEC_VERSION >= 52049000} // >= 52.49.0
- deprecated;
-{$IFEND}
-{$IFEND}
-
-(**
- * Return a value representing the fourCC code associated to the
- * pixel format pix_fmt, or 0 if no associated fourCC code can be
- * found.
- *)
-function avcodec_pix_fmt_to_codec_tag(pix_fmt: TAVPixelFormat): cuint;
- cdecl; external av__codec;
-
-{$IF LIBAVCODEC_VERSION >= 52073000} // 52.73.0
-(**
- * 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;
-{$IFEND}
-
-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.
- *)
-{$IF LIBAVCODEC_VERSION >= 52000000} // 52.0.0
-function avcodec_find_best_pix_fmt(pix_fmt_mask: cint64; src_pix_fmt: TAVPixelFormat;
- has_alpha: cint; loss_ptr: PCint): cint;
- cdecl; external av__codec;
-{$ELSEIF LIBAVCODEC_VERSION < 52022001}
-function avcodec_find_best_pix_fmt(pix_fmt_mask: cint; src_pix_fmt: TAVPixelFormat;
- has_alpha: cint; loss_ptr: PCint): cint;
- cdecl; external av__codec;
-{$ELSE}
-function avcodec_find_best_pix_fmt(pix_fmt_mask: cint; src_pix_fmt: TAVPixelFormat;
- has_alpha: cint; loss_ptr: PCint): TAVPixelFormat;
- cdecl; external av__codec;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 51041000} // 51.41.0
-(**
- * Print in buf the string corresponding to the pixel format with
- * number pix_fmt, or an header if pix_fmt is negative.
- *
- * @param[in] buf the buffer where to write the string
- * @param[in] buf_size the size of buf
- * @param[in] pix_fmt the number of the pixel format to print the corresponding info string, or
- * a negative value to print the corresponding header.
- * Meaningful values for obtaining a pixel format info vary from 0 to PIX_FMT_NB -1.
- *)
-{$IF LIBAVCODEC_VERSION < 52022001} // 52.22.1
-procedure avcodec_pix_fmt_string (buf: PAnsiChar; buf_size: cint; pix_fmt: cint);
- cdecl; external av__codec;
-{$ELSE}
-procedure avcodec_pix_fmt_string (buf: PAnsiChar; buf_size: cint; pix_fmt: TAVPixelFormat);
- cdecl; external av__codec;
-{$IFEND}
-{$IFEND}
-
-const
- FF_ALPHA_TRANSP = $0001; {* image has some totally transparent pixels *}
- FF_ALPHA_SEMI_TRANSP = $0002; {* image has some transparent pixels *}
-
-(**
- * Tell if an image really has transparent alpha values.
- * @return ored mask of FF_ALPHA_xxx constants
- *)
-function img_get_alpha_info (src: {const} PAVPicture;
- pix_fmt: TAVPixelFormat;
- width: cint;
- height: cint): cint;
- cdecl; external av__codec;
-
-{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
-(**
- * convert among pixel formats
- * @deprecated Use the software scaler (swscale) instead.
- *)
-function img_convert (dst: PAVPicture; dst_pix_fmt: TAVPixelFormat;
- src: {const} PAVPicture; pix_fmt: TAVPixelFormat;
- width: cint; height: cint): cint;
- cdecl; external av__codec; deprecated;
-{$IFEND}
-
-(* deinterlace a picture *)
-(* deinterlace - if not supported return -1 *)
-function avpicture_deinterlace (dst: PAVPicture;
- src: {const} PAVPicture;
- pix_fmt: TAVPixelFormat;
- width: cint;
- height: cint): cint;
- cdecl; external av__codec;
-
-{* external high level API *}
-
-{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
-{
-var
- first_avcodec: PAVCodec; external av__codec;
-}
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0
-(**
- * If c is NULL, returns the first registered codec,
- * if c is non-NULL, returns the next registered codec after c,
- * or NULL if c is the last one.
- *)
-function av_codec_next(c: PAVCodec): PAVCodec;
- cdecl; external av__codec;
-{$IFEND}
-
-(**
- * Return the LIBAVCODEC_VERSION_INT constant.
- *)
-function avcodec_version(): cuint;
- cdecl; external av__codec;
-
-{$IF LIBAVCODEC_VERSION < 52008000} // 52.8.0
-(* returns LIBAVCODEC_BUILD constant *)
-function avcodec_build(): cuint;
- cdecl; external av__codec; deprecated;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52041000} // 52.41.0
-(**
- * 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;
-{$IFEND}
-
-(**
- * Initialize libavcodec.
- *
- * @warning This function must be called before any other libavcodec
- * function.
- *)
-procedure avcodec_init();
- cdecl; external av__codec;
-
-(**
- * Register the codec codec and initialize libavcodec.
- *
- * @see avcodec_init()
- *)
-{$IF LIBAVCODEC_VERSION >= 52014000} // 52.14.0
-procedure avcodec_register(codec: PAVCodec);
- cdecl; external av__codec;
-// Deprecated in favor of avcodec_register.
-procedure register_avcodec(codec: PAVCodec);
- cdecl; external av__codec; deprecated;
-{$ELSEIF LIBAVCODEC_VERSION_MAJOR < 53}
-procedure register_avcodec(codec: PAVCodec);
- cdecl; external av__codec;
-{$IFEND}
-(**
- * 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;
-
-(**
- * Findsa 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;
-
-(**
- * 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;
-
-{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0
-(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
- * we WILL change its arguments and name a few times! *)
-{$IF LIBAVCODEC_VERSION < 52064000} // < 52.64.0
-procedure avcodec_get_context_defaults2(s: PAVCodecContext; ctype: TCodecType);
- cdecl; external av__codec;
-{$ELSE}
-procedure avcodec_get_context_defaults2(s: PAVCodecContext; ctype: TAVMediaType);
- cdecl; external av__codec;
-{$IFEND}
-{$IFEND}
-
-(**
- * Allocate an AVCodecContext and sets it fields to default values. The
- * resulting struct can be deallocated by simply calling av_free().
- *
- * @return An AVCodecContext filled with default values or NULL on failure.
- * @see avcodec_get_context_defaults
- *)
-function avcodec_alloc_context(): PAVCodecContext;
- cdecl; external av__codec;
-
-{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0
-(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
- * we WILL change its arguments and name a few times! *)
-{$IF LIBAVCODEC_VERSION < 52064000} // < 52.64.0
-function avcodec_alloc_context2(ctype: TCodecType): PAVCodecContext;
- cdecl; external av__codec;
-{$ELSE}
-function avcodec_alloc_context2(ctype: TAVMediaType): PAVCodecContext;
- cdecl; external av__codec;
-{$IFEND}
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52065000} // >= 52.65.0
-(**
- * Copy the settings of the source AVCodecContext into the destination
- * AVCodecContext. The resulting destination codec context will be
- * unopened, i.e. you are required to call avcodec_open() before you
- * can use this AVCodecContext to decode/encode video/audio data.
- *
- * @param dest target codec context, should be initialized with
- * avcodec_alloc_context(), but otherwise uninitialized
- * @param src source codec context
- * @return AVERROR() on error (e.g. memory allocation error), 0 on success
- *)
-function avcodec_copy_context(dest: PAVCodecContext; src: {const} PAVCodecContext): cint;
- cdecl; external av__codec;
-{$IFEND}
-
-(**
- * 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;
-
-{$IF LIBAVCODEC_VERSION >= 52066000} // >= 52.66.0
-(**
- * Return the amount of padding in pixels which the get_buffer callback must
- * provide around the edge of the image for codecs which do not have the
- * CODEC_FLAG_EMU_EDGE flag.
- *
- * @return Required padding in pixels.
- *)
-function avcodec_get_edge_width(): cuint;
- cdecl; external av__codec;
-{$IFEND}
-
-(**
- * 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;
-
-{$IF LIBAVCODEC_VERSION_MAJOR < 53} // < 53
-{$IF LIBAVCODEC_VERSION >= 52055000} // >= 52.55.0
-(**
-{$IF LIBAVCODEC_VERSION >= 52084003} // >= 52.84.3
- * @deprecated Deprecated in favor of av_check_image_size().
-{$ELSE}
- * 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.
-{$IFEND}
- *)
-procedure avcodec_align_dimensions2(s: PAVCodecContext; width: PCint; height: PCint;
- linesize_align: PQuadIntArray);
- cdecl; external av__codec;
-{$IF LIBAVCODEC_VERSION >= 52084003} // >= 52.84.3
- deprecated;
-{$IFEND}
-{$IFEND}
-{$IFEND}
-
-(**
- * Check if the given dimension of a picture is valid, meaning that all
- * bytes of the picture can be addressed with a signed int.
- *
- * @param[in] w Width of the picture.
- * @param[in] h Height of the picture.
- * @return Zero if valid, a negative value if invalid.
- *)
-function avcodec_check_dimensions(av_log_ctx: pointer; w: cuint; h: cuint): cint;
- cdecl; external av__codec;
-
-
-function avcodec_default_get_format(s: PAVCodecContext; fmt: {const} PAVPixelFormat): TAVPixelFormat;
- cdecl; external av__codec;
-
-function avcodec_thread_init(s: PAVCodecContext; thread_count: cint): cint;
- cdecl; external av__codec;
-procedure avcodec_thread_free(s: PAVCodecContext);
- cdecl; external av__codec;
-
-{$IF LIBAVCODEC_VERSION < 52004000} // < 52.4.0
-function avcodec_thread_execute(s: PAVCodecContext; func: TExecuteFunc; arg: PPointer; var ret: cint; count: cint): cint;
- cdecl; external av__codec;
-{$ELSEIF LIBAVCODEC_VERSION < 52059000} // < 52.59.0
-function avcodec_thread_execute(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint; size: cint): cint;
- cdecl; external av__codec;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION < 52004000} // < 52.4.0
-function avcodec_default_execute(s: PAVCodecContext; func: TExecuteFunc; arg: PPointer; var ret: cint; count: cint): cint;
- cdecl; external av__codec;
-{$ELSE}
-function avcodec_default_execute(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint; size: cint): cint;
- cdecl; external av__codec;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52037000} // >= 52.37.0
-function avcodec_default_execute2(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint): cint;
- cdecl; external av__codec;
-{$IFEND}
-//FIXME func typedef
-
-(**
- * Initialize the AVCodecContext to use the given AVCodec. Prior to using this
- * function the context has to be allocated.
- *
- * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
- * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
- * retrieving a codec.
- *
- * @warning This function is not thread safe!
- *
- * @code
- * avcodec_register_all();
- * codec = avcodec_find_decoder(CODEC_ID_H264);
- * if (!codec)
- * exit(1);
- *
- * context = avcodec_alloc_context();
- *
- * if (avcodec_open(context, codec) < 0)
- * exit(1);
- * @endcode
- *
- * @param avctx The context which will be set up to use the given codec.
- * @param codec The codec to use within the context.
- * @return zero on success, a negative value on error
- * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder
- *)
-function avcodec_open(avctx: PAVCodecContext; codec: PAVCodec): cint;
- cdecl; external av__codec;
-
-{$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0
-(**
- * @deprecated Use avcodec_decode_audio2 instead.
- *)
-function avcodec_decode_audio(avctx: PAVCodecContext; samples: PSmallint;
- var frame_size_ptr: cint;
- buf: {const} PByteArray; buf_size: cint): cint;
- cdecl; external av__codec; {deprecated;}
-{$IFEND}
-
-{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
-{$IF LIBAVCODEC_VERSION >= 51030000} // 51.30.0
-(**
- * Decode an audio frame from buf into samples.
- * Wrapper function which calls avcodec_decode_audio3.
- *
- * @deprecated Use avcodec_decode_audio3 instead.
- * @param avctx the codec context
- * @param[out] samples the output buffer, sample type in avctx->sample_fmt
- * @param[in,out] frame_size_ptr the output buffer size in bytes
- * @param[in] buf the input buffer
- * @param[in] buf_size the input buffer size in bytes
- * @return On error a negative value is returned, otherwise the number of bytes
- * used or zero if no frame could be decompressed.
- *)
-function avcodec_decode_audio2(avctx: PAVCodecContext; samples: PSmallint;
- var frame_size_ptr: cint;
- buf: {const} PByteArray; buf_size: cint): cint;
- cdecl; external av__codec; {deprecated;}
-{$IFEND}
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52025000} // 52.25.0
-(**
- * 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;
-{$IFEND}
-
-{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
-(**
- * 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;}
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52025000} // 52.25.0
-(**
- * 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;
-{$IFEND}
-
-{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
-(* Decode a subtitle message. Return -1 if error, otherwise return the
- * number of bytes used. If no subtitle could be decompressed,
- * got_sub_ptr is zero. Otherwise, the subtitle is stored in*sub.
- *)
-function avcodec_decode_subtitle(avctx: PAVCodecContext; sub: PAVSubtitle;
- var got_sub_ptr: cint;
- buf: {const} PByteArray; buf_size: cint): cint;
- cdecl; external av__codec;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52025000} // 52.25.0
-(* 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;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52082000} // 52.82.0
-(**
- * Frees all allocated data in the given subtitle struct.
- *
- * @param sub AVSubtitle to free.
- *)
-procedure avsubtitle_free(sub: PAVSubtitle);
- cdecl; external av__codec;
-{$IFEND}
-
-function avcodec_parse_frame(avctx: PAVCodecContext; pdata: PPointer;
- data_size_ptr: PCint;
- buf: PByteArray; buf_size: cint): cint;
- cdecl; external av__codec;
-
-(**
- * 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: 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 *)
-
-(**
- * 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.
- *)
-function av_get_pict_type_char(pict_type: cint): AnsiChar;
- cdecl; external av__codec;
-
-(**
- * 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 LIBAVCODEC_VERSION >= 51041000} // 51.41.0
-(**
- * Return sample format bits per sample.
- *
- * @param[in] sample_fmt the sample format
- * @return Number of bits per sample or zero if unknown for the given sample format.
- *)
-function av_get_bits_per_sample_format(sample_fmt: TSampleFormat): cint;
- cdecl; external av__codec;
-{$IFEND}
-
-const
- AV_PARSER_PTS_NB = 4;
- PARSER_FLAG_COMPLETE_FRAMES = $0001;
-{$IF LIBAVCODEC_VERSION >= 52070000} // 52.70.0
- PARSER_FLAG_ONCE = $0002;
-{$IFEND}
-
-type
- {* frame parsing *}
- PAVCodecParserContext = ^TAVCodecParserContext;
- PAVCodecParser = ^TAVCodecParser;
-
- TAVCodecParserContext = record
- priv_data: pointer;
- parser: PAVCodecParser;
- frame_offset: cint64; (* offset of the current frame *)
- cur_offset: cint64; (* current offset (incremented by each av_parser_parse()) *)
- next_frame_offset: cint64; (* offset of the next frame *)
- (* video info *)
- pict_type: cint; (* XXX: put it back in AVCodecContext *)
- (**
- * This field is used for proper frame duration computation in lavf.
- * It signals, how much longer the frame duration of the current frame
- * is compared to normal frame duration.
- *
- * frame_duration = (1 + repeat_pict) * time_base
- *
- * It is used by codecs like H.264 to display telecined material.
- *)
- repeat_pict: cint; (* XXX: put it back in AVCodecContext *)
- pts: cint64; (* pts of the current frame *)
- dts: cint64; (* dts of the current frame *)
-
- (* private data *)
- last_pts: cint64;
- last_dts: cint64;
- fetch_timestamp: cint;
-
- cur_frame_start_index: cint;
- cur_frame_offset: array [0..AV_PARSER_PTS_NB - 1] of cint64;
- cur_frame_pts: array [0..AV_PARSER_PTS_NB - 1] of cint64;
- cur_frame_dts: array [0..AV_PARSER_PTS_NB - 1] of cint64;
-
- flags: cint;
-
- {$IF LIBAVCODEC_VERSION >= 51040003} // 51.40.3
- offset: cint64; ///< byte offset from starting packet start
- {$IFEND}
- {$IF LIBAVCODEC_VERSION >= 51057001} // 51.57.1
- cur_frame_end: array [0..AV_PARSER_PTS_NB - 1] of cint64;
- {$IFEND}
- {$IF LIBAVCODEC_VERSION >= 52016000} // 52.16.0
- (*!
- * Set by parser to 1 for key frames and 0 for non-key frames.
- * It is initialized to -1, so if the parser doesn't set this flag,
- * old-style fallback using FF_I_TYPE picture type as key frames
- * will be used.
- *)
- key_frame: cint;
- {$IFEND}
- {$IF LIBAVCODEC_VERSION >= 52018000} // 52.18.0
- (**
- * Time difference in stream time base units from the pts of this
- * packet to the point at which the output from the decoder has converged
- * independent from the availability of previous frames. That is, the
- * frames are virtually identical no matter if decoding started from
- * the very first frame or from this keyframe.
- * Is AV_NOPTS_VALUE if unknown.
- * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY
- * set.
- *
- * The purpose of this field is to allow seeking in streams that have no
- * keyframes in the conventional sense. It corresponds to the
- * recovery point SEI in H.264 and match_time_delta in NUT. It is also
- * essential for some types of subtitle streams to ensure that all
- * subtitles are correctly displayed after seeking.
- *)
- convergence_duration: cint64;
- {$IFEND}
- {$IF LIBAVCODEC_VERSION >= 52019000} // 52.19.0
- // Timestamp generation support:
- (**
- * Synchronization point for start of timestamp generation.
- *
- * Set to >0 for sync point, 0 for no sync point and <0 for undefined
- * (default).
- *
- * For example, this corresponds to presence of H.264 buffering period
- * SEI message.
- *)
- dts_sync_point: cint;
-
- (**
- * Offset of the current timestamp against last timestamp sync point in
- * units of AVCodecContext.time_base.
- *
- * Set to INT_MIN when dts_sync_point unused. Otherwise, it must
- * contain a valid timestamp offset.
- *
- * Note that the timestamp of sync point has usually a nonzero
- * dts_ref_dts_delta, which refers to the previous sync point. Offset of
- * the next frame after timestamp sync point will be usually 1.
- *
- * For example, this corresponds to H.264 cpb_removal_delay.
- *)
- dts_ref_dts_delta: cint;
-
- (**
- * Presentation delay of current frame in units of AVCodecContext.time_base.
- *
- * Set to INT_MIN when dts_sync_point unused. Otherwise, it must
- * contain valid non-negative timestamp delta (presentation time of a frame
- * must not lie in the past).
- *
- * This delay represents the difference between decoding and presentation
- * time of the frame.
- *
- * For example, this corresponds to H.264 dpb_output_delay.
- *)
- pts_dts_delta: cint;
- {$IFEND}
-
- {$IF LIBAVCODEC_VERSION >= 52021000} // 52.21.0
- (**
- * Position of the packet in file.
- *
- * Analogous to cur_frame_pts/dts
- *)
- cur_frame_pos: array [0..AV_PARSER_PTS_NB - 1] of cint64;
-
- (**
- * Byte position of currently parsed frame in stream.
- *)
- pos: cint64;
-
- (**
- * Previous frame byte position.
- *)
- last_pos: cint64;
- {$IFEND}
- end;
-
- TAVCodecParser = record
- codec_ids: array [0..4] of cint; (* several codec IDs are permitted *)
- priv_data_size: cint;
- parser_init: function(s: PAVCodecParserContext): cint; cdecl;
- parser_parse: function(s: PAVCodecParserContext;
- avctx: PAVCodecContext;
- poutbuf: {const} PPointer; poutbuf_size: PCint;
- buf: {const} PByteArray; buf_size: cint): cint; cdecl;
- parser_close: procedure(s: PAVCodecParserContext); cdecl;
- split: function(avctx: PAVCodecContext; buf: {const} PByteArray;
- buf_size: cint): cint; cdecl;
- next: PAVCodecParser;
- end;
-
-
-{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
-{
-var
- av_first_parser: PAVCodecParser; external av__codec;
-}
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0
-function av_parser_next(c: PAVCodecParser): PAVCodecParser;
- cdecl; external av__codec;
-{$IFEND}
-
-procedure av_register_codec_parser(parser: PAVCodecParser);
- cdecl; external av__codec;
-
-function av_parser_init(codec_id: cint): PAVCodecParserContext;
- cdecl; external av__codec;
-
-{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
-function av_parser_parse(s: PAVCodecParserContext;
- avctx: PAVCodecContext;
- poutbuf: PPointer;
- poutbuf_size: PCint;
- buf: {const} PByteArray;
- buf_size: cint;
- pts: cint64;
- dts: cint64): cint;
- cdecl; external av__codec; deprecated;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52021000} // 52.21.0
-(**
- * Parse a packet.
- *
- * @param s parser context.
- * @param avctx codec context.
- * @param poutbuf set to pointer to parsed buffer or NULL if not yet finished.
- * @param poutbuf_size set to size of parsed buffer or zero if not yet finished.
- * @param buf input buffer.
- * @param buf_size input length, to signal EOF, this should be 0 (so that the last frame can be output).
- * @param pts input presentation timestamp.
- * @param dts input decoding timestamp.
- * @param pos input byte position in stream.
- * @return the number of bytes of the input bitstream used.
- *
- * Example:
- * @code
- * while (in_len) do
- * begin
- * len := av_parser_parse2(myparser, AVCodecContext, data, size,
- * in_data, in_len,
- * pts, dts, pos);
- * in_data := in_data + len;
- * in_len := in_len - len;
- *
- * if (size) then
- * decode_frame(data, size);
- * end;
- * @endcode
- *)
-function av_parser_parse2(s: PAVCodecParserContext;
- avctx: PAVCodecContext;
- poutbuf: PPointer;
- poutbuf_size: PCint;
- buf: {const} PByteArray;
- buf_size: cint;
- pts: cint64;
- dts: cint64;
- pos: cint64): cint;
- cdecl; external av__codec;
-{$IFEND}
-
-function av_parser_change(s: PAVCodecParserContext;
- avctx: PAVCodecContext;
- poutbuf: PPointer; poutbuf_size: PCint;
- buf: {const} PByteArray; buf_size: cint; keyframe: cint): cint;
- cdecl; external av__codec;
-procedure av_parser_close(s: PAVCodecParserContext);
- cdecl; external av__codec;
-
-type
- PAVBitStreamFilterContext = ^TAVBitStreamFilterContext;
- PAVBitStreamFilter = ^TAVBitStreamFilter;
-
- TAVBitStreamFilterContext = record
- priv_data: pointer;
- filter: PAVBitStreamFilter;
- parser: PAVCodecParserContext;
- next: PAVBitStreamFilterContext;
- end;
-
- TAVBitStreamFilter = record
- name: PAnsiChar;
- priv_data_size: cint;
- filter: function(bsfc: PAVBitStreamFilterContext;
- avctx: PAVCodecContext; args: PByteArray;
- poutbuf: PPointer; poutbuf_size: PCint;
- buf: PByte; buf_size: cint; keyframe: cint): cint; cdecl;
- {$IF LIBAVCODEC_VERSION >= 51043000} // 51.43.0
- close: procedure(bsfc: PAVBitStreamFilterContext);
- {$IFEND}
- next: PAVBitStreamFilter;
- end;
-
-procedure av_register_bitstream_filter(bsf: PAVBitStreamFilter);
- cdecl; external av__codec;
-
-function av_bitstream_filter_init(name: PAnsiChar): PAVBitStreamFilterContext;
- cdecl; external av__codec;
-
-function av_bitstream_filter_filter(bsfc: PAVBitStreamFilterContext;
- avctx: PAVCodecContext; args: PByteArray;
- poutbuf: PPointer; poutbuf_size: PCint;
- buf: PByte; buf_size: cint; keyframe: cint): cint;
- cdecl; external av__codec;
-
-procedure av_bitstream_filter_close(bsf: PAVBitStreamFilterContext);
- cdecl; external av__codec;
-
-{$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0
-function av_bitstream_filter_next(f: PAVBitStreamFilter): PAVBitStreamFilter;
- cdecl; external av__codec;
-{$IFEND}
-
-(* memory *)
-
-(**
- * 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: cuint);
- cdecl; external av__codec;
-
-{$IF LIBAVCODEC_VERSION >= 52025000} // >= 52.25.0
-(**
- * Allocate a buffer, reusing the given one if large enough.
- *
- * Contrary to av_fast_realloc the current buffer contents might not be
- * preserved and on error the old buffer is freed, thus no special
- * handling to avoid memleaks is necessary.
- *
- * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer
- * @param size size of the buffer *ptr points to
- * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and
- * *size 0 if an error occurred.
- *)
-procedure av_fast_malloc(ptr: pointer; size: PCuint; min_size: cuint);
- cdecl; external av__codec;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION < 51057000} // 51.57.0
-(* for static data only *)
-
-(**
- * Frees all static arrays and resets their pointers to 0.
- * Call this function to release all statically allocated tables.
- *
- * @deprecated. Code which uses av_free_static is broken/misdesigned
- * and should correctly use static arrays
- *
- *)
-procedure av_free_static();
- cdecl; external av__codec; deprecated;
-
-(**
- * Allocation of static arrays.
- *
- * @warning Do not use for normal allocation.
- *
- * @param[in] size The amount of memory you need in bytes.
- * @return block of memory of the requested size
- * @deprecated. Code which uses av_mallocz_static is broken/misdesigned
- * and should correctly use static arrays
- *)
-procedure av_mallocz_static(size: cuint);
- cdecl; external av__codec; deprecated; {av_malloc_attrib av_alloc_size(1)}
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52085000} // 52.85.0
-(**
- * Copy image data in src_data to dst_data.
- *
- * @param dst_linesize linesizes for the image in dst_data
- * @param src_linesize linesizes for the image in src_data
- *)
-type
- PQuaduint8Array = ^TQuaduint8Array;
- TQuaduint8Array = array [0..3] of cuint8;
-
-procedure av_picture_data_copy(dst_data: PQuaduint8Array; dst_linesize: TQuadIntArray;
- src_data: PQuaduint8Array; src_linesize: TQuadIntArray;
- pix_fmt: TAVPixelFormat; width: cint; height: cint);
- cdecl; external av__codec;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION < 51035000} // 51.35.0
-procedure av_realloc_static(ptr: pointer; size: cuint);
- cdecl; external av__codec;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0
-(**
- * Copy image src to dst. Wraps av_picture_data_copy() above.
- *)
-procedure av_picture_copy(dst: PAVPicture;
- src: {const} PAVPicture;
-{$IF LIBAVCODEC_VERSION < 52022001} // 52.22.1
- pix_fmt: cint;
-{$ELSE}
- pix_fmt: TAVPixelFormat;
-{$IFEND}
- width: cint;
- height: cint);
- cdecl; external av__codec;
-
-(**
- * Crop image top and left side.
- *)
-function av_picture_crop(dst: PAVPicture;
- src: {const} PAVPicture;
-{$IF LIBAVCODEC_VERSION < 52022001} // 52.22.1
- pix_fmt: cint;
-{$ELSE}
- pix_fmt: TAVPixelFormat;
-{$IFEND}
- top_band: cint;
- left_band: cint): cint;
- cdecl; external av__codec;
-
-(**
- * Pad image.
- *)
-function av_picture_pad(dst: PAVPicture;
- src: {const} PAVPicture;
- height: cint;
- width: cint;
-{$IF LIBAVCODEC_VERSION < 52022001} // 52.22.1
- pix_fmt: cint;
-{$ELSE}
- pix_fmt: TAVPixelFormat;
-{$IFEND}
- padtop: cint;
- padbottom: cint;
- padleft: cint;
- padright:
- cint;
- color: PCint): cint;
- cdecl; external av__codec;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
-(**
- * @deprecated Use the software scaler (swscale) instead.
- *)
-procedure img_copy(dst: PAVPicture; src: {const} PAVPicture;
- pix_fmt: TAVPixelFormat; width: cint; height: cint);
- cdecl; external av__codec; deprecated;
-
-(**
- * @deprecated Use the software scaler (swscale) instead.
- *)
-function img_crop(dst: PAVPicture; src: {const} PAVPicture;
- pix_fmt: TAVPixelFormat; top_band, left_band: cint): cint;
- cdecl; external av__codec; deprecated;
-
-(**
- * @deprecated Use the software scaler (swscale) instead.
- *)
-function img_pad(dst: PAVPicture; src: {const} PAVPicture; height, width: cint;
- pix_fmt: TAVPixelFormat; padtop, padbottom, padleft, padright: cint;
- color: PCint): cint;
- cdecl; external av__codec; deprecated;
-{$IFEND}
-
-(**
- * Encode extradata length to a buffer. Used by xiph codecs.
- *
- * @param s buffer to write to; must be at least (v/255+1) bytes long
- * @param v size of extradata in bytes
- * @return number of bytes written to the buffer.
- *)
-function av_xiphlacing(s: PByte; v: cuint): cuint;
- cdecl; external av__codec;
-
-{$IF LIBAVCODEC_VERSION_MAJOR < 53} // < 53
-{$IF LIBAVCODEC_VERSION >= 51041000} // >= 51.41.0
-(**
- * Parse str and put in width_ptr and height_ptr the detected values.
- *
-{$IF LIBAVCODEC_VERSION >= 52084001} // >= 52.84.1
- * @deprecated Deprecated in favor of av_parse_video_size().
-{$ELSE}
- * @return 0 in case of a successful parsing, a negative value otherwise
- * @param[in] str the string to parse: it has to be a string in the format
- * width x height or a valid video frame size abbreviation.
- * @param[in,out] width_ptr pointer to the variable which will contain the detected
- * frame width value
- * @param[in,out] height_ptr pointer to the variable which will contain the detected
- * frame height value
-{$IFEND}
- *)
-function av_parse_video_frame_size(width_ptr: PCint; height_ptr: PCint; str: {const} PAnsiChar): cint;
- cdecl; external av__codec;
-{$IF LIBAVCODEC_VERSION >= 52084001} // >= 52.84.1
- deprecated;
-{$IFEND}
-
-(**
- * Parse str and store the detected values in *frame_rate.
- *
-{$IF LIBAVCODEC_VERSION >= 52084001} // >= 52.84.1
- * @deprecated Deprecated in favor of av_parse_video_rate().
-{$ELSE}
- * @return 0 in case of a successful parsing, a negative value otherwise
- * @param[in] str the string to parse: it has to be a string in the format
- * frame_rate_num / frame_rate_den, a float number or a valid video rate abbreviation
- * @param[in,out] frame_rate pointer to the AVRational which will contain the detected
- * frame rate
-{$IFEND}
- *)
-function av_parse_video_frame_rate(frame_rate: PAVRational; str: {const} PAnsiChar): cint;
- cdecl; external av__codec;
-{$IF LIBAVCODEC_VERSION >= 52084001} // >= 52.84.1
- deprecated;
-{$IFEND}
-{$IFEND}
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION < 52059000} // <52.59.0
-
-{
- The following error codes are moved to libavutil/error.h on
- revision 22501 Mar 13 2010
-}
-
-{* error handling *}
-
-const
-{$IFDEF UNIX}
- ENOENT = ESysENOENT;
- EIO = ESysEIO;
- ENOMEM = ESysENOMEM;
- EINVAL = ESysEINVAL;
- EDOM = ESysEDOM;
- ENOSYS = ESysENOSYS;
- EILSEQ = ESysEILSEQ;
- EPIPE = ESysEPIPE;
-{$ELSE}
- ENOENT = 2;
- EIO = 5;
- ENOMEM = 12;
- EINVAL = 22;
- EPIPE = 32; // just an assumption. needs to be checked.
- EDOM = 33;
- {$IFDEF MSWINDOWS}
- // Note: we assume that ffmpeg was compiled with MinGW.
- // This must be changed if DLLs were compiled with cygwin.
- ENOSYS = 40; // MSVC/MINGW: 40, CYGWIN: 88, LINUX/FPC: 38
- EILSEQ = 42; // MSVC/MINGW: 42, CYGWIN: 138, LINUX/FPC: 84
- {$ENDIF}
-{$ENDIF}
-
-(**
- * We need the sign of the error, because some platforms have
- * E* and errno already negated. The previous version failed
- * with Delphi, because it needed EINVAL defined.
- * Warning: This code is platform dependent and assumes constants
- * to be 32 bit.
- * This version does the following steps:
- * 1) shr 30: shifts the sign bit to bit position 2
- * 2) and $00000002: sets all other bits to zero
- * positive EINVAL gives 0, negative gives 2
- * 3) - 1: positive EINVAL gives -1, negative 1
- *)
-const
- AVERROR_SIGN = (EINVAL shr 30) and $00000002 - 1;
-
-(*
-#if EINVAL > 0
-#define AVERROR(e) (-(e)) {**< Returns a negative error code from a POSIX error code, to return from library functions. *}
-#define AVUNERROR(e) (-(e)) {**< Returns a POSIX error code from a library function error return value. *}
-#else
-{* Some platforms have E* and errno already negated. *}
-#define AVERROR(e) (e)
-#define AVUNERROR(e) (e)
-#endif
-*)
-
-const
- AVERROR_UNKNOWN = AVERROR_SIGN * EINVAL; (**< unknown error *)
- AVERROR_IO = AVERROR_SIGN * EIO; (**< I/O error *)
- AVERROR_NUMEXPECTED = AVERROR_SIGN * EDOM; (**< Number syntax expected in filename. *)
- AVERROR_INVALIDDATA = AVERROR_SIGN * EINVAL; (**< invalid data found *)
- AVERROR_NOMEM = AVERROR_SIGN * ENOMEM; (**< not enough memory *)
- AVERROR_NOFMT = AVERROR_SIGN * EILSEQ; (**< unknown format *)
- AVERROR_NOTSUPP = AVERROR_SIGN * ENOSYS; (**< Operation not supported. *)
- AVERROR_NOENT = AVERROR_SIGN * ENOENT; (**< No such file or directory. *)
-{$IF LIBAVCODEC_VERSION >= 52017000} // 52.17.0
- AVERROR_EOF = AVERROR_SIGN * EPIPE; (**< End of file. *)
-{$IFEND}
- // Note: function calls as constant-initializers are invalid
- //AVERROR_PATCHWELCOME = -MKTAG('P','A','W','E'); {**< Not yet implemented in FFmpeg. Patches welcome. *}
- AVERROR_PATCHWELCOME = -(ord('P') or (ord('A') shl 8) or (ord('W') shl 16) or (ord('E') shl 24));
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52032000} // >= 52.32.0
-(**
- * Log a generic warning message about a missing feature. This function is
- * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.)
- * only, and would normally not be used by applications.
- * @param[in] avc a pointer to an arbitrary struct of which the first field is
- * a pointer to an AVClass struct
- * @param[in] feature string containing the name of the missing feature
- * @param[in] want_sample indicates if samples are wanted which exhibit this feature.
- * If want_sample is non-zero, additional verbage will be added to the log
- * message which tells the user how to report samples to the development
- * mailing list.
- *)
-procedure av_log_missing_feature(avc: Pointer; feature: {const} Pchar; want_sample: cint);
- cdecl; external av__codec;
-
-(**
- * Log a generic warning message asking for a sample. This function is
- * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.)
- * only, and would normally not be used by applications.
- * @param[in] avc a pointer to an arbitrary struct of which the first field is
- * a pointer to an AVClass struct
- * @param[in] msg string containing an optional message, or NULL if no message
- *)
-procedure av_log_ask_for_sample(avc: Pointer; msg: {const} Pchar);
- cdecl; external av__codec;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52018000} // 52.18.0
-(**
- * Register the hardware accelerator hwaccel.
- *)
-procedure av_register_hwaccel (hwaccel: PAVHWAccel)
- cdecl; external av__codec;
-
-(**
- * If hwaccel is NULL, returns the first registered hardware accelerator,
- * if hwaccel is non-NULL, returns the next registered hardware accelerator
- * after hwaccel, or NULL if hwaccel is the last one.
- *)
-function av_hwaccel_next (hwaccel: PAVHWAccel): PAVHWAccel;
- cdecl; external av__codec;
-{$IFEND}
-
-{$IF LIBAVCODEC_VERSION >= 52030000} // 52.30.0
-(**
- * Lock operation used by lockmgr
- *)
-type
- TAVLockOp = (
- AV_LOCK_CREATE, ///< Create a mutex
- AV_LOCK_OBTAIN, ///< Lock the mutex
- AV_LOCK_RELEASE, ///< Unlock the mutex
- AV_LOCK_DESTROY ///< Free mutex resources
- );
-
-(**
- * Register a user provided lock manager supporting the operations
- * specified by AVLockOp. mutex points to a (void) where the
- * lockmgr should store/get a pointer to a user allocated mutex. It's
- * NULL upon AV_LOCK_CREATE and != NULL for all other ops.
- *
- * @param cb User defined callback. Note: FFmpeg may invoke calls to this
- * callback during the call to av_lockmgr_register().
- * Thus, the application must be prepared to handle that.
- * If cb is set to NULL the lockmgr will be unregistered.
- * Also note that during unregistration the previously registered
- * lockmgr callback may also be invoked.
- *)
-// ToDo: Implement and test this
-//function av_lockmgr_register(cb: function (mutex: pointer; op: TAVLockOp)): cint;
-// cdecl; external av__codec;
-{$IFEND}
-
-implementation
-
-{$IF (LIBAVCODEC_VERSION >= 52025000) and (LIBAVCODEC_VERSION <= 52027000)} // 52.25.0 - 52.27.0
-procedure av_free_packet(pkt: PAVPacket);{$IFDEF HASINLINE} inline; {$ENDIF}
-begin
- if assigned(pkt) then
- begin
- if assigned(pkt^.destruct) then
- pkt^.destruct(pkt);
- pkt^.data := NIL;
- pkt^.size := 0;
- end;
-end;
-{$IFEND}
-
-end.
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