(* * copyright (c) 2001 Fabrice Bellard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * * This is a part of Pascal porting of ffmpeg. * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows. * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT * in the source codes. * - Changes and updates by the UltraStar Deluxe Team * * Conversion of libavcodec/avcodec.h * version: 54.92.100 * *) 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 *) {$ENDIF} {$I switches.inc} (* for ffmpeg defines *) {$IFDEF DARWIN} {$linklib libavcodec} {$ENDIF} interface uses ctypes, avutil, rational, SysUtils, {$IFDEF UNIX} BaseUnix, {$ENDIF} UConfig; const (* * IMPORTANT: The official FFmpeg C headers change very quickly. Often some * of the data structures are changed so that they become incompatible with * older header files. The Pascal headers have to be adjusted to those changes, * otherwise the application might crash randomly or strange bugs (not * necessarily related to video or audio due to buffer overflows etc.) might * occur. * * In the past users reported problems with USDX that took hours to fix and * the problem was an unsupported version of FFmpeg. So we decided to disable * support for future versions of FFmpeg until the headers are revised by us * for that version as they otherwise most probably will break USDX. * * If the headers do not yet support your FFmpeg version you may want to * adjust the max. version numbers manually but please note: it may work but * in many cases it does not. The USDX team does NOT PROVIDE ANY SUPPORT * for the game if the MAX. VERSION WAS CHANGED. * * The only safe way to support new versions of FFmpeg is to add the changes * of the FFmpeg git repository C headers to the Pascal headers. * You can accelerate this process by posting a patch with the git changes * translated to Pascal to our bug tracker (please join our IRC chat before * you start working on it). Simply adjusting the max. versions is NOT a valid * fix. *) (* Supported version by this header *) LIBAVCODEC_MAX_VERSION_MAJOR = 54; LIBAVCODEC_MAX_VERSION_MINOR = 92; LIBAVCODEC_MAX_VERSION_RELEASE = 100; 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 = 54; LIBAVCODEC_MIN_VERSION_MINOR = 92; 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!'} {$IFEND} (** * FF_API_* defines may be placed below to indicate public API that will be * dropped at a future version bump. The defines themselves are not part of * the public API and may change, break or disappear at any time. *) {$ifndef FF_API_REQUEST_CHANNELS} {$define FF_API_REQUEST_CHANNELS := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_ALLOC_CONTEXT} {$define FF_API_ALLOC_CONTEXT := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_AVCODEC_OPEN} {$define FF_API_AVCODEC_OPEN := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_OLD_DECODE_AUDIO} {$define FF_API_OLD_DECODE_AUDIO := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_OLD_TIMECODE} {$define FF_API_OLD_TIMECODE := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_OLD_ENCODE_AUDIO} {$define FF_API_OLD_ENCODE_AUDIO := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_OLD_ENCODE_VIDEO} {$define FF_API_OLD_ENCODE_VIDEO := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_MPV_GLOBAL_OPTS} {$define FF_API_MPV_GLOBAL_OPTS := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_COLOR_TABLE_ID} {$define FF_API_COLOR_TABLE_ID := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_INTER_THRESHOLD} {$define FF_API_INTER_THRESHOLD := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_SUB_ID} {$define FF_API_SUB_ID := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_DSP_MASK} {$define FF_API_DSP_MASK := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_FIND_BEST_PIX_FMT} {$define FF_API_FIND_BEST_PIX_FMT := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_CODEC_ID} {$define FF_API_CODEC_ID := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$ifndef FF_API_VDA_ASYNC} {$define FF_API_VDA_ASYNC := (LIBAVCODEC_VERSION_MAJOR < 55)} {$endif} {$IFNDEF FPC} type // defines for Delphi size_t = cardinal; {$ENDIF} type FF_INTERNALC_MEM_TYPE = cuint; const AV_NOPTS_VALUE: cint64 = $8000000000000000; AV_TIME_BASE = 1000000; AV_TIME_BASE_Q: TAVRational = (num: 1; den: AV_TIME_BASE); (** * @defgroup lavc_core Core functions/structures. * @ingroup libavc * * Basic definitions, functions for querying libavcodec capabilities, * allocating core structures, etc. * @ *) (** * 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. Give it a value which when taken as ASCII is recognized uniquely by a human as this specific codec. * This ensures that 2 forks can independently add AVCodecIDs without producing conflicts. * * After adding new codec IDs, do not forget to add an entry to the codec * descriptor list and bump libavcodec minor version. *) type TAVCodecID = ( AV_CODEC_ID_NONE, //* video codecs */ AV_CODEC_ID_MPEG1VIDEO, AV_CODEC_ID_MPEG2VIDEO, ///< preferred ID for MPEG-1/2 video decoding AV_CODEC_ID_MPEG2VIDEO_XVMC, AV_CODEC_ID_H261, AV_CODEC_ID_H263, AV_CODEC_ID_RV10, AV_CODEC_ID_RV20, AV_CODEC_ID_MJPEG, AV_CODEC_ID_MJPEGB, AV_CODEC_ID_LJPEG, AV_CODEC_ID_SP5X, AV_CODEC_ID_JPEGLS, AV_CODEC_ID_MPEG4, AV_CODEC_ID_RAWVIDEO, AV_CODEC_ID_MSMPEG4V1, AV_CODEC_ID_MSMPEG4V2, AV_CODEC_ID_MSMPEG4V3, AV_CODEC_ID_WMV1, AV_CODEC_ID_WMV2, AV_CODEC_ID_H263P, AV_CODEC_ID_H263I, AV_CODEC_ID_FLV1, AV_CODEC_ID_SVQ1, AV_CODEC_ID_SVQ3, AV_CODEC_ID_DVVIDEO, AV_CODEC_ID_HUFFYUV, AV_CODEC_ID_CYUV, AV_CODEC_ID_H264, AV_CODEC_ID_INDEO3, AV_CODEC_ID_VP3, AV_CODEC_ID_THEORA, AV_CODEC_ID_ASV1, AV_CODEC_ID_ASV2, AV_CODEC_ID_FFV1, AV_CODEC_ID_4XM, AV_CODEC_ID_VCR1, AV_CODEC_ID_CLJR, AV_CODEC_ID_MDEC, AV_CODEC_ID_ROQ, AV_CODEC_ID_INTERPLAY_VIDEO, AV_CODEC_ID_XAN_WC3, AV_CODEC_ID_XAN_WC4, AV_CODEC_ID_RPZA, AV_CODEC_ID_CINEPAK, AV_CODEC_ID_WS_VQA, AV_CODEC_ID_MSRLE, AV_CODEC_ID_MSVIDEO1, AV_CODEC_ID_IDCIN, AV_CODEC_ID_8BPS, AV_CODEC_ID_SMC, AV_CODEC_ID_FLIC, AV_CODEC_ID_TRUEMOTION1, AV_CODEC_ID_VMDVIDEO, AV_CODEC_ID_MSZH, AV_CODEC_ID_ZLIB, AV_CODEC_ID_QTRLE, AV_CODEC_ID_SNOW, AV_CODEC_ID_TSCC, AV_CODEC_ID_ULTI, AV_CODEC_ID_QDRAW, AV_CODEC_ID_VIXL, AV_CODEC_ID_QPEG, AV_CODEC_ID_PNG, AV_CODEC_ID_PPM, AV_CODEC_ID_PBM, AV_CODEC_ID_PGM, AV_CODEC_ID_PGMYUV, AV_CODEC_ID_PAM, AV_CODEC_ID_FFVHUFF, AV_CODEC_ID_RV30, AV_CODEC_ID_RV40, AV_CODEC_ID_VC1, AV_CODEC_ID_WMV3, AV_CODEC_ID_LOCO, AV_CODEC_ID_WNV1, AV_CODEC_ID_AASC, AV_CODEC_ID_INDEO2, AV_CODEC_ID_FRAPS, AV_CODEC_ID_TRUEMOTION2, AV_CODEC_ID_BMP, AV_CODEC_ID_CSCD, AV_CODEC_ID_MMVIDEO, AV_CODEC_ID_ZMBV, AV_CODEC_ID_AVS, AV_CODEC_ID_SMACKVIDEO, AV_CODEC_ID_NUV, AV_CODEC_ID_KMVC, AV_CODEC_ID_FLASHSV, AV_CODEC_ID_CAVS, AV_CODEC_ID_JPEG2000, AV_CODEC_ID_VMNC, AV_CODEC_ID_VP5, AV_CODEC_ID_VP6, AV_CODEC_ID_VP6F, AV_CODEC_ID_TARGA, AV_CODEC_ID_DSICINVIDEO, AV_CODEC_ID_TIERTEXSEQVIDEO, AV_CODEC_ID_TIFF, AV_CODEC_ID_GIF, AV_CODEC_ID_DXA, AV_CODEC_ID_DNXHD, AV_CODEC_ID_THP, AV_CODEC_ID_SGI, AV_CODEC_ID_C93, AV_CODEC_ID_BETHSOFTVID, AV_CODEC_ID_PTX, AV_CODEC_ID_TXD, AV_CODEC_ID_VP6A, AV_CODEC_ID_AMV, AV_CODEC_ID_VB, AV_CODEC_ID_PCX, AV_CODEC_ID_SUNRAST, AV_CODEC_ID_INDEO4, AV_CODEC_ID_INDEO5, AV_CODEC_ID_MIMIC, AV_CODEC_ID_RL2, AV_CODEC_ID_ESCAPE124, AV_CODEC_ID_DIRAC, AV_CODEC_ID_BFI, AV_CODEC_ID_CMV, AV_CODEC_ID_MOTIONPIXELS, AV_CODEC_ID_TGV, AV_CODEC_ID_TGQ, AV_CODEC_ID_TQI, AV_CODEC_ID_AURA, AV_CODEC_ID_AURA2, AV_CODEC_ID_V210X, AV_CODEC_ID_TMV, AV_CODEC_ID_V210, AV_CODEC_ID_DPX, AV_CODEC_ID_MAD, AV_CODEC_ID_FRWU, AV_CODEC_ID_FLASHSV2, AV_CODEC_ID_CDGRAPHICS, AV_CODEC_ID_R210, AV_CODEC_ID_ANM, AV_CODEC_ID_BINKVIDEO, AV_CODEC_ID_IFF_ILBM, AV_CODEC_ID_IFF_BYTERUN1, AV_CODEC_ID_KGV1, AV_CODEC_ID_YOP, AV_CODEC_ID_VP8, AV_CODEC_ID_PICTOR, AV_CODEC_ID_ANSI, AV_CODEC_ID_A64_MULTI, AV_CODEC_ID_A64_MULTI5, AV_CODEC_ID_R10K, AV_CODEC_ID_MXPEG, AV_CODEC_ID_LAGARITH, AV_CODEC_ID_PRORES, AV_CODEC_ID_JV, AV_CODEC_ID_DFA, AV_CODEC_ID_WMV3IMAGE, AV_CODEC_ID_VC1IMAGE, AV_CODEC_ID_UTVIDEO, AV_CODEC_ID_BMV_VIDEO, AV_CODEC_ID_VBLE, AV_CODEC_ID_DXTORY, AV_CODEC_ID_V410, AV_CODEC_ID_XWD, AV_CODEC_ID_CDXL, AV_CODEC_ID_XBM, AV_CODEC_ID_ZEROCODEC, AV_CODEC_ID_MSS1, AV_CODEC_ID_MSA1, AV_CODEC_ID_TSCC2, AV_CODEC_ID_MTS2, AV_CODEC_ID_CLLC, AV_CODEC_ID_MSS2, AV_CODEC_ID_VP9, (** see below. they need to be hard coded. AV_CODEC_ID_BRENDER_PIX= MKBETAG('B','P','I','X'), AV_CODEC_ID_Y41P = MKBETAG('Y','4','1','P'), AV_CODEC_ID_ESCAPE130 = MKBETAG('E','1','3','0'), AV_CODEC_ID_EXR = MKBETAG('0','E','X','R'), AV_CODEC_ID_AVRP = MKBETAG('A','V','R','P'), AV_CODEC_ID_012V = MKBETAG('0','1','2','V'), AV_CODEC_ID_G2M = MKBETAG( 0 ,'G','2','M'), AV_CODEC_ID_AVUI = MKBETAG('A','V','U','I'), AV_CODEC_ID_AYUV = MKBETAG('A','Y','U','V'), AV_CODEC_ID_TARGA_Y216 = MKBETAG('T','2','1','6'), AV_CODEC_ID_V308 = MKBETAG('V','3','0','8'), AV_CODEC_ID_V408 = MKBETAG('V','4','0','8'), AV_CODEC_ID_YUV4 = MKBETAG('Y','U','V','4'), AV_CODEC_ID_SANM = MKBETAG('S','A','N','M'), AV_CODEC_ID_PAF_VIDEO = MKBETAG('P','A','F','V'), AV_CODEC_ID_AVRN = MKBETAG('A','V','R','n'), AV_CODEC_ID_CPIA = MKBETAG('C','P','I','A'), AV_CODEC_ID_XFACE = MKBETAG('X','F','A','C'), AV_CODEC_ID_SGIRLE = MKBETAG('S','G','I','R'), AV_CODEC_ID_MVC1 = MKBETAG('M','V','C','1'), AV_CODEC_ID_MVC2 = MKBETAG('M','V','C','2'), *) //* various PCM "codecs" */ // AV_CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs AV_CODEC_ID_PCM_S16LE = $10000, AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_U16LE, AV_CODEC_ID_PCM_U16BE, AV_CODEC_ID_PCM_S8, AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_MULAW, AV_CODEC_ID_PCM_ALAW, AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE, AV_CODEC_ID_PCM_U32LE, AV_CODEC_ID_PCM_U32BE, AV_CODEC_ID_PCM_S24LE, AV_CODEC_ID_PCM_S24BE, AV_CODEC_ID_PCM_U24LE, AV_CODEC_ID_PCM_U24BE, AV_CODEC_ID_PCM_S24DAUD, AV_CODEC_ID_PCM_ZORK, AV_CODEC_ID_PCM_S16LE_PLANAR, AV_CODEC_ID_PCM_DVD, AV_CODEC_ID_PCM_F32BE, AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F64BE, AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_BLURAY, AV_CODEC_ID_PCM_LXF, AV_CODEC_ID_S302M, AV_CODEC_ID_PCM_S8_PLANAR, (** see below. they need to be hard coded. AV_CODEC_ID_PCM_S24LE_PLANAR = MKBETAG(24,'P','S','P'), AV_CODEC_ID_PCM_S32LE_PLANAR = MKBETAG(32,'P','S','P'), AV_CODEC_ID_PCM_S16BE_PLANAR = MKBETAG('P','S','P',16), *) //* various ADPCM codecs */ AV_CODEC_ID_ADPCM_IMA_QT = $11000, AV_CODEC_ID_ADPCM_IMA_WAV, AV_CODEC_ID_ADPCM_IMA_DK3, AV_CODEC_ID_ADPCM_IMA_DK4, AV_CODEC_ID_ADPCM_IMA_WS, AV_CODEC_ID_ADPCM_IMA_SMJPEG, AV_CODEC_ID_ADPCM_MS, AV_CODEC_ID_ADPCM_4XM, AV_CODEC_ID_ADPCM_XA, AV_CODEC_ID_ADPCM_ADX, AV_CODEC_ID_ADPCM_EA, AV_CODEC_ID_ADPCM_G726, AV_CODEC_ID_ADPCM_CT, AV_CODEC_ID_ADPCM_SWF, AV_CODEC_ID_ADPCM_YAMAHA, AV_CODEC_ID_ADPCM_SBPRO_4, AV_CODEC_ID_ADPCM_SBPRO_3, AV_CODEC_ID_ADPCM_SBPRO_2, AV_CODEC_ID_ADPCM_THP, AV_CODEC_ID_ADPCM_IMA_AMV, AV_CODEC_ID_ADPCM_EA_R1, AV_CODEC_ID_ADPCM_EA_R3, AV_CODEC_ID_ADPCM_EA_R2, AV_CODEC_ID_ADPCM_IMA_EA_SEAD, AV_CODEC_ID_ADPCM_IMA_EA_EACS, AV_CODEC_ID_ADPCM_EA_XAS, AV_CODEC_ID_ADPCM_EA_MAXIS_XA, AV_CODEC_ID_ADPCM_IMA_ISS, AV_CODEC_ID_ADPCM_G722, AV_CODEC_ID_ADPCM_IMA_APC, (** see below. they need to be hard coded. AV_CODEC_ID_VIMA = MKBETAG('V','I','M','A'), AV_CODEC_ID_ADPCM_AFC = MKBETAG('A','F','C',' '), AV_CODEC_ID_ADPCM_IMA_OKI = MKBETAG('O','K','I',' '), *) //* AMR */ AV_CODEC_ID_AMR_NB = $12000, AV_CODEC_ID_AMR_WB, //* RealAudio codecs*/ AV_CODEC_ID_RA_144 = $13000, AV_CODEC_ID_RA_288, //* various DPCM codecs */ AV_CODEC_ID_ROQ_DPCM = $14000, AV_CODEC_ID_INTERPLAY_DPCM, AV_CODEC_ID_XAN_DPCM, AV_CODEC_ID_SOL_DPCM, //* audio codecs */ AV_CODEC_ID_MP2 = $15000, AV_CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3 AV_CODEC_ID_AAC, AV_CODEC_ID_AC3, AV_CODEC_ID_DTS, AV_CODEC_ID_VORBIS, AV_CODEC_ID_DVAUDIO, AV_CODEC_ID_WMAV1, AV_CODEC_ID_WMAV2, AV_CODEC_ID_MACE3, AV_CODEC_ID_MACE6, AV_CODEC_ID_VMDAUDIO, AV_CODEC_ID_FLAC, AV_CODEC_ID_MP3ADU, AV_CODEC_ID_MP3ON4, AV_CODEC_ID_SHORTEN, AV_CODEC_ID_ALAC, AV_CODEC_ID_WESTWOOD_SND1, AV_CODEC_ID_GSM, ///< as in Berlin toast format AV_CODEC_ID_QDM2, AV_CODEC_ID_COOK, AV_CODEC_ID_TRUESPEECH, AV_CODEC_ID_TTA, AV_CODEC_ID_SMACKAUDIO, AV_CODEC_ID_QCELP, AV_CODEC_ID_WAVPACK, AV_CODEC_ID_DSICINAUDIO, AV_CODEC_ID_IMC, AV_CODEC_ID_MUSEPACK7, AV_CODEC_ID_MLP, AV_CODEC_ID_GSM_MS, { as found in WAV } AV_CODEC_ID_ATRAC3, AV_CODEC_ID_VOXWARE, AV_CODEC_ID_APE, AV_CODEC_ID_NELLYMOSER, AV_CODEC_ID_MUSEPACK8, AV_CODEC_ID_SPEEX, AV_CODEC_ID_WMAVOICE, AV_CODEC_ID_WMAPRO, AV_CODEC_ID_WMALOSSLESS, AV_CODEC_ID_ATRAC3P, AV_CODEC_ID_EAC3, AV_CODEC_ID_SIPR, AV_CODEC_ID_MP1, AV_CODEC_ID_TWINVQ, AV_CODEC_ID_TRUEHD, AV_CODEC_ID_MP4ALS, AV_CODEC_ID_ATRAC1, AV_CODEC_ID_BINKAUDIO_RDFT, AV_CODEC_ID_BINKAUDIO_DCT, AV_CODEC_ID_AAC_LATM, AV_CODEC_ID_QDMC, AV_CODEC_ID_CELT, AV_CODEC_ID_G723_1, AV_CODEC_ID_G729, AV_CODEC_ID_8SVX_EXP, AV_CODEC_ID_8SVX_FIB, AV_CODEC_ID_BMV_AUDIO, AV_CODEC_ID_RALF, AV_CODEC_ID_IAC, AV_CODEC_ID_ILBC, AV_CODEC_ID_OPUS_DEPRECATED, AV_CODEC_ID_COMFORT_NOISE, AV_CODEC_ID_TAK_DEPRECATED, (** see below. they need to be hard coded. AV_CODEC_ID_FFWAVESYNTH = MKBETAG('F','F','W','S'), #if LIBAVCODEC_VERSION_MAJOR <= 54 AV_CODEC_ID_8SVX_RAW = MKBETAG('8','S','V','X'), #endif AV_CODEC_ID_SONIC = MKBETAG('S','O','N','C'), AV_CODEC_ID_SONIC_LS = MKBETAG('S','O','N','L'), AV_CODEC_ID_PAF_AUDIO = MKBETAG('P','A','F','A'), AV_CODEC_ID_OPUS = MKBETAG('O','P','U','S'), AV_CODEC_ID_TAK = MKBETAG('t','B','a','K'), AV_CODEC_ID_EVRC = MKBETAG('s','e','v','c'), AV_CODEC_ID_SMV = MKBETAG('s','s','m','v'), *) //* subtitle codecs */ // AV_CODEC_ID_FIRST_SUBTITLE = 0x17000, ///< A dummy ID pointing at the start of subtitle codecs. AV_CODEC_ID_DVD_SUBTITLE = $17000, AV_CODEC_ID_DVB_SUBTITLE, AV_CODEC_ID_TEXT, ///< raw UTF-8 text AV_CODEC_ID_XSUB, AV_CODEC_ID_SSA, AV_CODEC_ID_MOV_TEXT, AV_CODEC_ID_HDMV_PGS_SUBTITLE, AV_CODEC_ID_DVB_TELETEXT, AV_CODEC_ID_SRT, (** see below. they need to be hard coded. AV_CODEC_ID_MICRODVD = MKBETAG('m','D','V','D'), AV_CODEC_ID_EIA_608 = MKBETAG('c','6','0','8'), AV_CODEC_ID_JACOSUB = MKBETAG('J','S','U','B'), AV_CODEC_ID_SAMI = MKBETAG('S','A','M','I'), AV_CODEC_ID_REALTEXT = MKBETAG('R','T','X','T'), AV_CODEC_ID_SUBVIEWER1 = MKBETAG('S','b','V','1'), AV_CODEC_ID_SUBVIEWER = MKBETAG('S','u','b','V'), AV_CODEC_ID_SUBRIP = MKBETAG('S','R','i','p'), AV_CODEC_ID_WEBVTT = MKBETAG('W','V','T','T'), AV_CODEC_ID_MPL2 = MKBETAG('M','P','L','2'), AV_CODEC_ID_VPLAYER = MKBETAG('V','P','l','r'), AV_CODEC_ID_PJS = MKBETAG('P','h','J','S'), *) //* other specific kind of codecs (generally used for attachments) */ // AV_CODEC_ID_FIRST_UNKNOWN = 0x18000, ///< A dummy ID pointing at the start of various fake codecs. AV_CODEC_ID_TTF = $18000, (** see below. they need to be hard coded. AV_CODEC_ID_BINTEXT = MKBETAG('B','T','X','T'), AV_CODEC_ID_XBIN = MKBETAG('X','B','I','N'), AV_CODEC_ID_IDF = MKBETAG( 0 ,'I','D','F'), AV_CODEC_ID_OTF = MKBETAG( 0 ,'O','T','F'), AV_CODEC_ID_SMPTE_KLV = MKBETAG('K','L','V','A'), *) AV_CODEC_ID_PROBE = $19000, ///< codec_id is not known (like AV_CODEC_ID_NONE) but lavf should attempt to identify it AV_CODEC_ID_MPEG2TS = $20000, (**< _FAKE_ codec to indicate a raw MPEG-2 TS * stream (only used by libavformat) *) AV_CODEC_ID_MPEG4SYSTEMS = $20001, (**< _FAKE_ codec to indicate a MPEG-4 Systems * stream (only used by libavformat) *) AV_CODEC_ID_FFMETADATA = $21000, ///< Dummy codec for streams containing only metadata information. (** hardcoded codecs from above. pascal needs them to be ordered **) AV_CODEC_ID_G2M = $0047324D, // MKBETAG( 0 ,'G','2','M'), AV_CODEC_ID_IDF = $00494446, // MKBETAG( 0 ,'I','D','F'), AV_CODEC_ID_OTF = $004F5446, // MKBETAG( 0 ,'O','T','F'), AV_CODEC_ID_PCM_S24LE_PLANAR = $18505350, // MKBETAG(24,'P','S','P'), AV_CODEC_ID_PCM_S32LE_PLANAR = $20505350, // MKBETAG(32,'P','S','P'), AV_CODEC_ID_012V = $30313256, // MKBETAG('0','1','2','V'), AV_CODEC_ID_EXR = $30455852, // MKBETAG('0','E','X','R'), {$IF LIBAVCODEC_VERSION_MAJOR <= 54} AV_CODEC_ID_8SVX_RAW = $38535658, // MKBETAG('8','S','V','X'), {$endif} AV_CODEC_ID_ADPCM_AFC = $41464320, // MKBETAG('A','F','C',' '), AV_CODEC_ID_AVRP = $41565250, // MKBETAG('A','V','R','P'), AV_CODEC_ID_AVRN = $4156526E, // MKBETAG('A','V','R','n'), AV_CODEC_ID_AVUI = $41565549, // MKBETAG('A','V','U','I'), AV_CODEC_ID_AYUV = $41595556, // MKBETAG('A','Y','U','V'), AV_CODEC_ID_BRENDER_PIX = $42504958, // MKBETAG('B','P','I','X'), AV_CODEC_ID_BINTEXT = $42545854, // MKBETAG('B','T','X','T'), AV_CODEC_ID_CPIA = $43504941, // MKBETAG('C','P','I','A'), AV_CODEC_ID_ESCAPE130 = $45313330, // MKBETAG('E','1','3','0'), AV_CODEC_ID_FFWAVESYNTH = $46465753, // MKBETAG('F','F','W','S'), AV_CODEC_ID_JACOSUB = $4A535542, // MKBETAG('J','S','U','B'), AV_CODEC_ID_SMPTE_KLV = $4B4C5641, // MKBETAG('K','L','V','A'), AV_CODEC_ID_MPL2 = $4D504C32, // MKBETAG('M','P','L','2'), AV_CODEC_ID_MVC1 = $4D564331, // MKBETAG('M','V','C','1'), AV_CODEC_ID_MVC2 = $4D564332, // MKBETAG('M','V','C','2'), AV_CODEC_ID_ADPCM_IMA_OKI=$4F4B4920, // MKBETAG('O','K','I',' '), AV_CODEC_ID_OPUS = $4F505553, // MKBETAG('O','P','U','S'), AV_CODEC_ID_PAF_AUDIO = $50414641, // MKBETAG('P','A','F','A'), AV_CODEC_ID_PAF_VIDEO = $50414656, // MKBETAG('P','A','F','V'), AV_CODEC_ID_PCM_S16BE_PLANAR = $50535010, // MKBETAG('P','S','P',16), AV_CODEC_ID_PJS = $50684A53, // MKBETAG('P','h','J','S'), AV_CODEC_ID_REALTEXT = $52545854, // MKBETAG('R','T','X','T'), AV_CODEC_ID_SAMI = $53414D49, // MKBETAG('S','A','M','I'), AV_CODEC_ID_SANM = $53414E4D, // MKBETAG('S','A','N','M'), AV_CODEC_ID_SGIRLE = $53474952, // MKBETAG('S','G','I','R'), AV_CODEC_ID_SONIC = $534F4E43, // MKBETAG('S','O','N','C'), AV_CODEC_ID_SONIC_LS = $534F4E4C, // MKBETAG('S','O','N','L'), AV_CODEC_ID_SUBRIP = $53526970, // MKBETAG('S','R','i','p'), AV_CODEC_ID_SUBVIEWER1 = $53625631, // MKBETAG('S','b','V','1'), AV_CODEC_ID_SUBVIEWER = $53756256, // MKBETAG('S','u','b','V'), AV_CODEC_ID_TARGA_Y216 = $54323136, // MKBETAG('T','2','1','6'), AV_CODEC_ID_V308 = $56333038, // MKBETAG('V','3','0','8'), AV_CODEC_ID_V408 = $56413038, // MKBETAG('V','4','0','8'), AV_CODEC_ID_VPLAYER = $56506C72, // MKBETAG('V','P','l','r'), AV_CODEC_ID_WEBVTT = $57565454, // MKBETAG('W','V','T','T'), AV_CODEC_ID_XBIN = $5842494E, // MKBETAG('X','B','I','N'), AV_CODEC_ID_XFACE = $58464143, // MKBETAG('X','F','A','C'), AV_CODEC_ID_Y41P = $59343150, // MKBETAG('Y','4','1','P'), AV_CODEC_ID_YUV4 = $59555634, // MKBETAG('Y','U','V','4'), AV_CODEC_ID_EIA_608 = $63363038, // MKBETAG('c','6','0','8'), AV_CODEC_ID_MICRODVD = $6D445644, // MKBETAG('m','D','V','D'), AV_CODEC_ID_EVRC = $73657663, // MKBETAG('s','e','v','c'), AV_CODEC_ID_SMV = $73736D76, // MKBETAG('s','s','m','v'), AV_CODEC_ID_TAK = $7442614B // MKBETAG('t','B','a','K') ); type TCodecType = TAVMediaType; const CODEC_TYPE_UNKNOWN = AVMEDIA_TYPE_UNKNOWN; CODEC_TYPE_VIDEO = AVMEDIA_TYPE_VIDEO; CODEC_TYPE_AUDIO = AVMEDIA_TYPE_AUDIO; CODEC_TYPE_DATA = AVMEDIA_TYPE_DATA; CODEC_TYPE_SUBTITLE = AVMEDIA_TYPE_SUBTITLE; CODEC_TYPE_ATTACHMENT = AVMEDIA_TYPE_ATTACHMENT; CODEC_TYPE_NB = AVMEDIA_TYPE_NB; (** * This struct describes the properties of a single codec described by an * AVCodecID. * @see avcodec_get_descriptor() *) type PAVCodecDescriptor = ^TAVCodecDescriptor; TAVCodecDescriptor = record id: TAVCodecID; type_: TAVMediaType; (** * Name of the codec described by this descriptor. It is non-empty and * unique for each codec descriptor. It should contain alphanumeric * characters and '_' only. *) name: PAnsiChar; (** * A more descriptive name for this codec. May be NULL. *) long_name: PAnsiChar; (** * Codec properties, a combination of AV_CODEC_PROP_* flags. *) props: cint; end; const (** * Codec uses only intra compression. * Video codecs only. *) AV_CODEC_PROP_INTRA_ONLY = 1 << 0; (** * Codec supports lossy compression. Audio and video codecs only. * @note a codec may support both lossy and lossless * compression modes *) AV_CODEC_PROP_LOSSY = 1 << 1; (** * Codec supports lossless compression. Audio and video codecs only. *) AV_CODEC_PROP_LOSSLESS = 1 << 2; (** * Subtitle codec is bitmap based *) AV_CODEC_PROP_BITMAP_SUB = 1 << 16; {$IFDEF FF_API_OLD_DECODE_AUDIO} (* in bytes *) AVCODEC_MAX_AUDIO_FRAME_SIZE = 192000; // 1 second of 48khz 32bit audio {$IFEND} (** * @ingroup lavc_decoding * 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.
* 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 = 16; (** * @ingroup lavc_decoding * minimum encoding buffer size. * Used to avoid some checks during header writing. *) FF_MIN_BUFFER_SIZE = 16384; type (* * @ingroup lavc_decoding * 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 ); (** * @ingroup lavc_decoding *) TAVDiscard = ( (* We leave some space between them for extensions (drop some * keyframes for intra-only or drop just some bidir frames). *) AVDISCARD_NONE = -16, ///< discard nothing AVDISCARD_DEFAULT = 0, ///< discard useless packets like 0 size packets in avi AVDISCARD_NONREF = 8, ///< discard all non reference AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes AVDISCARD_ALL = 48 ///< discard all ); TAVColorPrimaries = ( AVCOL_PRI_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B AVCOL_PRI_UNSPECIFIED = 2, AVCOL_PRI_BT470M = 4, AVCOL_PRI_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM AVCOL_PRI_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC AVCOL_PRI_SMPTE240M = 7, ///< functionally identical to above AVCOL_PRI_FILM = 8, AVCOL_PRI_NB ///< Not part of ABI ); TAVColorTransferCharacteristic = ( AVCOL_TRC_BT709 = 1, ///< also ITU-R BT1361 AVCOL_TRC_UNSPECIFIED = 2, AVCOL_TRC_GAMMA22 = 4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM AVCOL_TRC_GAMMA28 = 5, ///< also ITU-R BT470BG AVCOL_SPC_SMPTE240M = 7, 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_YCGCO = 8, 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 ); TAVAudioServiceType =( AV_AUDIO_SERVICE_TYPE_MAIN = 0, AV_AUDIO_SERVICE_TYPE_EFFECTS = 1, AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED = 2, AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED = 3, AV_AUDIO_SERVICE_TYPE_DIALOGUE = 4, AV_AUDIO_SERVICE_TYPE_COMMENTARY = 5, AV_AUDIO_SERVICE_TYPE_EMERGENCY = 6, AV_AUDIO_SERVICE_TYPE_VOICE_OVER = 7, AV_AUDIO_SERVICE_TYPE_KARAOKE = 8, AV_AUDIO_SERVICE_TYPE_NB ///< Not part of ABI ); (** * @ingroup lavc_decoding *) 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>. (** * 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_GRAY = $2000; ///< only decode/encode grayscale CODEC_FLAG_EMU_EDGE = $4000; ///< don't draw edges CODEC_FLAG_PSNR = $8000; ///< error[?] variables will be set during encoding CODEC_FLAG_TRUNCATED = $00010000; //** input bitstream might be truncated at a random // location instead of only at frame boundaries */ CODEC_FLAG_NORMALIZE_AQP = $00020000; ///< normalize adaptive quantization CODEC_FLAG_INTERLACED_DCT = $00040000; ///< use interlaced dct CODEC_FLAG_LOW_DELAY = $00080000; ///< force low delay CODEC_FLAG_ALT_SCAN = $00100000; ///< use alternate scan CODEC_FLAG_GLOBAL_HEADER = $00400000; ///< place global headers in extradata instead of every keyframe CODEC_FLAG_BITEXACT = $00800000; ///< use only bitexact stuff (except (i)dct) (* Fx : Flag for h263+ extra options *) CODEC_FLAG_AC_PRED = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction CODEC_FLAG_LOOP_FILTER = $00000800; ///< loop filter CODEC_FLAG_INTERLACED_ME = $20000000; ///< interlaced motion estimation CODEC_FLAG_CLOSED_GOP = $80000000; CODEC_FLAG2_FAST = $00000001; ///< allow non spec compliant speedup tricks 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_DROP_FRAME_TIMECODE = $00002000; ///< timecode is in drop frame format. DEPRECATED!!!! CODEC_FLAG2_IGNORE_CROP = $00010000; ///< Discard cropping information from SPS. {$IFDEF FF_API_MPV_GLOBAL_OPTS} CODEC_FLAG_CBP_RD = $04000000; ///< use rate distortion optimization for cbp CODEC_FLAG_QP_RD = $08000000; ///< use rate distortion optimization for qp selectioon CODEC_FLAG2_STRICT_GOP = $00000002; ///< strictly enforce GOP size CODEC_FLAG2_SKIP_RD = $00004000; ///< RD optimal MB level residual skipping {$ENDIF} CODEC_FLAG2_CHUNKS = $00008000; ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries. CODEC_FLAG2_SHOW_ALL = $00400000; ///< Show all frames before the first keyframe (* 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; CODEC_CAP_TRUNCATED = $0008; (* codec can export data for HW decoding (XvMC) *) CODEC_CAP_HWACCEL = $0010; (** * Encoder or decoder requires flushing with NULL input at the end in order to * give the complete and correct output. * * NOTE: If this flag is not set, the codec is guaranteed to never be fed with * with NULL data. The user can still send NULL data to the public encode * or decode function, but libavcodec will not pass it along to the codec * unless this flag is set. * * Decoders: * The decoder has a non-zero delay and needs to be fed with avpkt->data=NULL, * avpkt->size=0 at the end to get the delayed data until the decoder no longer * returns frames. * * Encoders: * The encoder needs to be fed with NULL data at the end of encoding until the * encoder no longer returns data. * * NOTE: For encoders implementing the AVCodec.encode2() function, setting this * flag also means that the encoder must set the pts and duration for * each output packet. If this flag is not set, the pts and duration will * be determined by libavcodec from the input frame. *) CODEC_CAP_DELAY = $0020; (** * Codec can be fed a final frame with a smaller size. * This can be used to prevent truncation of the last audio samples. *) CODEC_CAP_SMALL_LAST_FRAME = $0040; (** * Codec can export data for HW decoding (VDPAU). *) CODEC_CAP_HWACCEL_VDPAU = $0080; (** * Codec can output multiple frames per AVPacket * Normally demuxers return one frame at a time, demuxers which do not do * are connected to a parser to split what they return into proper frames. * This flag is reserved to the very rare category of codecs which have a * bitstream that cannot be split into frames without timeconsuming * operations like full decoding. Demuxers carring such bitstreams thus * may return multiple frames in a packet. This has many disadvantages like * prohibiting stream copy in many cases thus it should only be considered * as a last resort. *) CODEC_CAP_SUBFRAMES = $0100; (** * Codec is experimental and is thus avoided in favor of non experimental * encoders *) CODEC_CAP_EXPERIMENTAL = $0200; (** * Codec should fill in channel configuration and samplerate instead of container *) CODEC_CAP_CHANNEL_CONF = $0400; (** * Codec is able to deal with negative linesizes *) CODEC_CAP_NEG_LINESIZES = $0800; (** * Codec supports frame-level multithreading. *) CODEC_CAP_FRAME_THREADS = $1000; (** * Codec supports slice-based (or partition-based) multithreading. *) CODEC_CAP_SLICE_THREADS = $2000; (** * Codec supports changed parameters at any point. *) CODEC_CAP_PARAM_CHANGE = $4000; (** * Codec supports avctx->thread_count == 0 (auto). *) CODEC_CAP_AUTO_THREADS = $8000; (** * Audio encoder supports receiving a different number of samples in each call. *) CODEC_CAP_VARIABLE_FRAME_SIZE = $10000; (** * Codec is lossless. *) CODEC_CAP_LOSSLESS = $80000000; //the following defines may change, don't expect compatibility if you use them MB_TYPE_INTRA4x4 = $001; MB_TYPE_INTRA16x16 = $002; //FIXME h264 specific MB_TYPE_INTRA_PCM = $004; //FIXME h264 specific MB_TYPE_16x16 = $008; MB_TYPE_16x8 = $010; MB_TYPE_8x16 = $020; MB_TYPE_8x8 = $040; MB_TYPE_INTERLACED = $080; MB_TYPE_DIRECT2 = $100; //FIXME MB_TYPE_ACPRED = $200; MB_TYPE_GMC = $400; MB_TYPE_SKIP = $800; MB_TYPE_P0L0 = $1000; MB_TYPE_P1L0 = $2000; MB_TYPE_P0L1 = $4000; MB_TYPE_P1L1 = $8000; MB_TYPE_L0 = (MB_TYPE_P0L0 or MB_TYPE_P1L0); MB_TYPE_L1 = (MB_TYPE_P0L1 or MB_TYPE_P1L1); MB_TYPE_L0L1 = (MB_TYPE_L0 or MB_TYPE_L1); MB_TYPE_QUANT = $0010000; MB_TYPE_CBP = $0020000; //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...) type (** * Pan Scan area. * This specifies the area which should be displayed. * Note there may be multiple such areas for one frame. *) PAVPanScan = ^TAVPanScan; TAVPanScan = record {24} (*** id. * - encoding: set by user. * - decoding: set by libavcodec. *) id: cint; (*** width and height in 1/16 pel * - encoding: set by user. * - decoding: set by libavcodec. *) width: cint; height: cint; (*** position of the top left corner in 1/16 pel for up to 3 fields/frames. * - encoding: set by user. * - decoding: set by libavcodec. *) position: array [0..2] of array [0..1] of cint16; end; {TAVPanScan} const FF_QSCALE_TYPE_MPEG1 = 0; FF_QSCALE_TYPE_MPEG2 = 1; FF_QSCALE_TYPE_H264 = 2; FF_QSCALE_TYPE_VP56 = 3; FF_BUFFER_TYPE_INTERNAL = 1; FF_BUFFER_TYPE_USER = 2; ///< Direct rendering buffers (image is (de)allocated by user) FF_BUFFER_TYPE_SHARED = 4; ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared FF_BUFFER_TYPE_COPY = 8; ///< just a (modified) copy of some other buffer, don't dealloc anything. FF_BUFFER_HINTS_VALID = $01; // Buffer hints value is meaningful (if 0 ignore) FF_BUFFER_HINTS_READABLE = $02; // Codec will read from buffer FF_BUFFER_HINTS_PRESERVE = $04; // User must not alter buffer content FF_BUFFER_HINTS_REUSABLE = $08; // Codec will reuse the buffer (update) FF_COMPRESSION_DEFAULT = -1; FF_ASPECT_EXTENDED = 15; FF_RC_STRATEGY_XVID = 1; FF_PRED_LEFT = 0; FF_PRED_PLANE = 1; FF_PRED_MEDIAN = 2; 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; 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_CODER_TYPE_VLC = 0; FF_CODER_TYPE_AC = 1; FF_CODER_TYPE_RAW = 2; FF_CODER_TYPE_RLE = 3; FF_CODER_TYPE_DEFLATE = 4; FF_BUG_AUTODETECT = 1; ///< autodetection FF_BUG_OLD_MSMPEG4 = 2; FF_BUG_XVID_ILACE = 4; FF_BUG_UMP4 = 8; FF_BUG_NO_PADDING = 16; FF_BUG_AMV = 32; FF_BUG_AC_VLC = 0; ///< will be removed, libavcodec can now handle these non compliant files by default FF_BUG_QPEL_CHROMA = 64; FF_BUG_STD_QPEL = 128; FF_BUG_QPEL_CHROMA2 = 256; FF_BUG_DIRECT_BLOCKSIZE = 512; FF_BUG_EDGE = 1024; FF_BUG_HPEL_CHROMA = 2048; FF_BUG_DC_CLIP = 4096; FF_BUG_MS = 8192; ///< workaround various bugs in microsofts broken decoders FF_BUG_TRUNCATED = 16384; FF_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; FF_COMPLIANCE_UNOFFICIAL = -1; ///< Allow unofficial extensions FF_COMPLIANCE_EXPERIMENTAL = -2; ///< Allow nonstandardized experimental things. FF_EC_GUESS_MVS = 1; FF_EC_DEBLOCK = 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 = $00000004; //visualize backward predicted MVs of B frames AV_EF_CRCCHECK = 1; AV_EF_BITSTREAM = 2; AV_EF_BUFFER = 4; AV_EF_EXPLODE = 8; AV_EF_CAREFUL = 65536; AV_EF_COMPLIANT = 131072; AV_EF_AGGRESSIVE = 262144; FF_DCT_AUTO = 0; FF_DCT_FASTINT = 1; FF_DCT_INT = 2; FF_DCT_MMX = 3; FF_DCT_MLIB = 4; FF_DCT_ALTIVEC = 5; FF_DCT_FAAN = 6; FF_IDCT_AUTO = 0; FF_IDCT_INT = 1; FF_IDCT_SIMPLE = 2; FF_IDCT_SIMPLEMMX = 3; FF_IDCT_LIBMPEG2MMX = 4; {$IFDEF FF_API_MMI} FF_IDCT_MMI = 5; {$ENDIF} FF_IDCT_ARM = 7; FF_IDCT_ALTIVEC = 8; FF_IDCT_SH4 = 9; FF_IDCT_SIMPLEARM = 10; FF_IDCT_IPP = 13; FF_IDCT_XVIDMMX = 14; FF_IDCT_SIMPLEARMV5TE= 16; FF_IDCT_SIMPLEARMV6 = 17; FF_IDCT_SIMPLEVIS = 18; FF_IDCT_FAAN = 20; FF_IDCT_SIMPLENEON = 22; FF_IDCT_SIMPLEALPHA = 23; {$IFDEF FF_API_MMI} FF_IDCT_H264 = 11; FF_IDCT_VP3 = 12; FF_IDCT_CAVS = 15; FF_IDCT_WMV2 = 19; FF_IDCT_EA = 21; FF_IDCT_BINK = 24; {$ENDIF} FF_THREAD_FRAME = 1; ///< Decode more than one frame at once FF_THREAD_SLICE = 2; ///< Decode more than one part of a single frame at once FF_PROFILE_UNKNOWN = -99; FF_PROFILE_RESERVED = -100; FF_PROFILE_AAC_MAIN = 0; FF_PROFILE_AAC_LOW = 1; FF_PROFILE_AAC_SSR = 2; FF_PROFILE_AAC_LTP = 3; FF_PROFILE_AAC_HE = 4; FF_PROFILE_AAC_HE_V2 = 28; FF_PROFILE_AAC_LD = 22; FF_PROFILE_AAC_ELD = 38; FF_PROFILE_DTS = 20; FF_PROFILE_DTS_ES = 30; FF_PROFILE_DTS_96_24 = 40; FF_PROFILE_DTS_HD_HRA = 50; FF_PROFILE_DTS_HD_MA = 60; FF_PROFILE_MPEG2_422 = 0; FF_PROFILE_MPEG2_HIGH = 1; FF_PROFILE_MPEG2_SS = 2; FF_PROFILE_MPEG2_SNR_SCALABLE = 3; FF_PROFILE_MPEG2_MAIN = 4; FF_PROFILE_MPEG2_SIMPLE= 5; FF_PROFILE_H264_CONSTRAINED = (1 shl 9); // 8+1; constraint_set1_flag FF_PROFILE_H264_INTRA = (1 shl 11); // 8+3; constraint_set3_flag FF_PROFILE_H264_BASELINE = 66; FF_PROFILE_H264_CONSTRAINED_BASELINE = (66 or FF_PROFILE_H264_CONSTRAINED); FF_PROFILE_H264_MAIN = 77; FF_PROFILE_H264_EXTENDED = 88; FF_PROFILE_H264_HIGH = 100; FF_PROFILE_H264_HIGH_10 = 110; FF_PROFILE_H264_HIGH_10_INTRA = (110 or FF_PROFILE_H264_INTRA); FF_PROFILE_H264_HIGH_422 = 122; FF_PROFILE_H264_HIGH_422_INTRA = (122 or FF_PROFILE_H264_INTRA); FF_PROFILE_H264_HIGH_444 = 144; FF_PROFILE_H264_HIGH_444_PREDICTIVE = 244; FF_PROFILE_H264_HIGH_444_INTRA = (244 or FF_PROFILE_H264_INTRA); FF_PROFILE_H264_CAVLC_444 = 44; FF_PROFILE_VC1_SIMPLE = 0; FF_PROFILE_VC1_MAIN = 1; FF_PROFILE_VC1_COMPLEX = 2; FF_PROFILE_VC1_ADVANCED = 3; FF_PROFILE_MPEG4_SIMPLE = 0; FF_PROFILE_MPEG4_SIMPLE_SCALABLE = 1; FF_PROFILE_MPEG4_CORE = 2; FF_PROFILE_MPEG4_MAIN = 3; FF_PROFILE_MPEG4_N_BIT = 4; FF_PROFILE_MPEG4_SCALABLE_TEXTURE = 5; FF_PROFILE_MPEG4_SIMPLE_FACE_ANIMATION = 6; FF_PROFILE_MPEG4_BASIC_ANIMATED_TEXTURE = 7; FF_PROFILE_MPEG4_HYBRID = 8; FF_PROFILE_MPEG4_ADVANCED_REAL_TIME = 9; FF_PROFILE_MPEG4_CORE_SCALABLE = 10; FF_PROFILE_MPEG4_ADVANCED_CODING = 11; FF_PROFILE_MPEG4_ADVANCED_CORE = 12; FF_PROFILE_MPEG4_ADVANCED_SCALABLE_TEXTURE = 13; FF_PROFILE_MPEG4_SIMPLE_STUDIO = 14; FF_PROFILE_MPEG4_ADVANCED_SIMPLE = 15; FF_LEVEL_UNKNOWN = -99; type AVPacketSideDataType = ( AV_PKT_DATA_PALETTE, AV_PKT_DATA_NEW_EXTRADATA, (** * An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows: * @code * u32le param_flags * if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) * s32le channel_count * if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) * u64le channel_layout * if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) * s32le sample_rate * if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) * s32le width * s32le height * @endcode *) AV_PKT_DATA_PARAM_CHANGE, (** * An AV_PKT_DATA_H263_MB_INFO side data packet contains a number of * structures with info about macroblocks relevant to splitting the * packet into smaller packets on macroblock edges (e.g. as for RFC 2190). * That is, it does not necessarily contain info about all macroblocks, * as long as the distance between macroblocks in the info is smaller * than the target payload size. * Each MB info structure is 12 bytes, and is laid out as follows: * @code * u32le bit offset from the start of the packet * u8 current quantizer at the start of the macroblock * u8 GOB number * u16le macroblock address within the GOB * u8 horizontal MV predictor * u8 vertical MV predictor * u8 horizontal MV predictor for block number 3 * u8 vertical MV predictor for block number 3 * @endcode *) AV_PKT_DATA_H263_MB_INFO, (** * Recommmends skipping the specified number of samples * @code * u32le number of samples to skip from start of this packet * u32le number of samples to skip from end of this packet * u8 reason for start skip * u8 reason for end skip (0=padding silence, 1=convergence) * @endcode *) AV_PKT_DATA_SKIP_SAMPLES=70, (** * An AV_PKT_DATA_JP_DUALMONO side data packet indicates that * the packet may contain "dual mono" audio specific to Japanese DTV * and if it is true, recommends only the selected channel to be used. * @code * u8 selected channels (0=mail/left, 1=sub/right, 2=both) * @endcode *) AV_PKT_DATA_JP_DUALMONO, (** * A list of zero terminated key/value strings. There is no end marker for * the list, so it is required to rely on the side data size to stop. *) AV_PKT_DATA_STRINGS_METADATA, (** * Subtitle event position * @code * u32le x1 * u32le y1 * u32le x2 * u32le y2 * @endcode *) AV_PKT_DATA_SUBTITLE_POSITION, (** * Data found in BlockAdditional element of matroska container. There is * no end marker for the data, so it is required to rely on the side data * size to recognize the end. 8 byte id (as found in BlockAddId) followed * by data. *) AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL ); TAVPacketSideDataType = record data: PByte; size: cint; type_: AVPacketSideDataType; end; PAVPacketSideDataType = ^TAVPacketSideDataType; (** * This structure stores compressed data. It is typically exported by demuxers * and then passed as input to decoders, or received as output from encoders and * then passed to muxers. * * For video, it should typically contain one compressed frame. For audio it may * contain several compressed frames. * * AVPacket is one of the few structs in FFmpeg, whose size is a part of public * ABI. Thus it may be allocated on stack and no new fields can be added to it * without libavcodec and libavformat major bump. * * The semantics of data ownership depends on the destruct field. * If it is set, the packet data is dynamically allocated and is valid * indefinitely until av_free_packet() is called (which in turn calls the * destruct callback to free the data). If destruct is not set, the packet data * is typically backed by some static buffer somewhere and is only valid for a * limited time (e.g. until the next read call when demuxing). * * The side data is always allocated with av_malloc() and is freed in * av_free_packet(). *) 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; (** * A combination of AV_PKT_FLAG values *) flags: cint; (** * Additional packet data that can be provided by the container. * Packet can contain several types of side information. *) side_data: PAVPacketSideDataType; side_data_elems: cint; (* * Duration of this packet in AVStream->time_base units, 0 if unknown. * Equals next_pts - this_pts in presentation order. *) duration: cint; destruct: procedure (para1: PAVPacket); cdecl; priv: pointer; pos: cint64; // byte position in stream, -1 if unknown (* * Time difference in AVStream->time_base units from the pts of this * packet to the point at which the output from the decoder has converged * independent from the availability of previous frames. That is, the * frames are virtually identical no matter if decoding started from * the very first frame or from this keyframe. * Is AV_NOPTS_VALUE if unknown. * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY * set. * * The purpose of this field is to allow seeking in streams that have no * keyframes in the conventional sense. It corresponds to the * recovery point SEI in H.264 and match_time_delta in NUT. It is also * essential for some types of subtitle streams to ensure that all * subtitles are correctly displayed after seeking. *) convergence_duration: cint64; end; {TAVPacket} const AV_PKT_FLAG_KEY = $0001; ///< The packet contains a keyframe AV_PKT_FLAG_CORRUPT = $0002; ///< The packet content is corrupted AV_NUM_DATA_POINTERS = 8; type AVSideDataParamChangeFlags = ( AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT = $0001, AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT = $0002, AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE = $0004, AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS = $0008 ); const FF_DECODE_ERROR_INVALID_BITSTREAM = 1; FF_DECODE_ERROR_MISSING_REFERENCE = 2; FF_SUB_CHARENC_MODE_DO_NOTHING = -1; ///< do nothing (demuxer outputs a stream supposed to be already in UTF-8, or the codec is bitmap for instance) FF_SUB_CHARENC_MODE_AUTOMATIC = 0; ///< libavcodec will select the mode itself FF_SUB_CHARENC_MODE_PRE_DECODER = 1; ///< the AVPacket data needs to be recoded to UTF-8 before being fed to the decoder, requires iconv type PAVCodecContext = ^TAVCodecContext; (** * This structure describes decoded (raw) audio or video data. * * AVFrame must be allocated using avcodec_alloc_frame() and freed with * avcodec_free_frame(). Note that this allocates only the AVFrame itself. The * buffers for the data must be managed through other means. * * AVFrame is typically allocated once and then reused multiple times to hold * different data (e.g. a single AVFrame to hold frames received from a * decoder). In such a case, avcodec_get_frame_defaults() should be used to * reset the frame to its original clean state before it is reused again. * * sizeof(AVFrame) is not a part of the public ABI, so new fields may be added * to the end with a minor bump. * Similarly fields that are marked as to be only accessed by * av_opt_ptr() can be reordered. This allows 2 forks to add fields * without breaking compatibility with each other. *) PPAVFrame = ^PAVFrame; PAVFrame = ^TAVFrame; TAVFrame = record (** * pointer to the picture/channel planes. * This might be different from the first allocated byte * - encoding: Set by user * - decoding: set by AVCodecContext.get_buffer() *) data: array [0..AV_NUM_DATA_POINTERS - 1] of pbyte; (** * Size, in bytes, of the data for each picture/channel plane. * * For audio, only linesize[0] may be set. For planar audio, each channel * plane must be the same size. * * - encoding: Set by user * - decoding: set by AVCodecContext.get_buffer() *) linesize: array [0..AV_NUM_DATA_POINTERS - 1] of cint; (** * pointers to the data planes/channels. * * For video, this should simply point to data[]. * * For planar audio, each channel has a separate data pointer, and * linesize[0] contains the size of each channel buffer. * For packed audio, there is just one data pointer, and linesize[0] * contains the total size of the buffer for all channels. * * Note: Both data and extended_data will always be set by get_buffer(), * but for planar audio with more channels that can fit in data, * extended_data must be used by the decoder in order to access all * channels. * * encoding: set by user * decoding: set by AVCodecContext.get_buffer() *) extended_data: ^pbyte; (** * width and height of the video frame * - encoding: unused * - decoding: Read by user. *) width, height: cint; (** * number of audio samples (per channel) described by this frame * - encoding: Set by user * - decoding: Set by libavcodec *) nb_samples: cint; (** * format of the frame, -1 if unknown or unset * Values correspond to enum AVPixelFormat for video frames, * enum AVSampleFormat for audio) * - encoding: unused * - decoding: Read by user. *) format: cint; (** * 1 -> keyframe, 0-> not * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. *) key_frame: cint; (** * Picture type of the frame, see ?_TYPE below. * - encoding: Set by libavcodec. for coded_picture (and set by user for input). * - decoding: Set by libavcodec. *) pict_type: TAVPictureType; (** * 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..AV_NUM_DATA_POINTERS - 1] of pbyte; (** * sample aspect ratio for the video frame, 0/1 if unknown/unspecified * - encoding: unused * - decoding: Read by user. *) sample_aspect_ratio: TAVRational; (** * 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; (** * pts copied from the AVPacket that was decoded to produce this frame * - encoding: unused * - decoding: Read by user. *) pkt_pts: cint64; (** * dts copied from the AVPacket that triggered returning this frame * - encoding: unused * - decoding: Read by user. *) pkt_dts: 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; (** * 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; (** * *) qscale_type: 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; (** * 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; (** * 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..AV_NUM_DATA_POINTERS - 1] 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; (** * 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; (** * 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; (** * Pan scan. * - encoding: Set by user. * - decoding: Set by libavcodec. *) pan_scan: PAVPanScan; (** * reordered opaque 64bit number (generally a PTS) from AVCodecContext.reordered_opaque * PTS but can be anything). * The user sets AVCodecContext.reordered_opaque to represent the input at * that time, * the decoder reorders values as needed and sets AVFrame.reordered_opaque * to exactly one of the values provided by the user through AVCodecContext.reordered_opaque * @deprecated in favor of pkt_pts * - encoding: unused * - decoding: Read by user. *) reordered_opaque: cint64; (** * hardware accelerator private data (FFmpeg allocated) * - encoding: unused * - decoding: Set by libavcodec *) hwaccel_picture_private: pointer; (** * the AVCodecContext which ff_thread_get_buffer() was last called on * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. *) owner: PAVCodecContext; (** * used by multithreading to store frame-specific info * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. *) thread_opaque: pointer; (** * 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: cuint8; (** * Sample rate of the audio data. * * - encoding: unused * - decoding: read by user *) sample_rate: cint; (** * Channel layout of the audio data. * * - encoding: unused * - decoding: read by user. *) channel_layout: cuint64; (** * frame timestamp estimated using various heuristics, in stream time base * Code outside libavcodec should access this field using: * av_frame_get_best_effort_timestamp(frame) * - encoding: unused * - decoding: set by libavcodec, read by user. *) best_effort_timestamp: cint64; (** * reordered pos from the last AVPacket that has been input into the decoder * Code outside libavcodec should access this field using: * av_frame_get_pkt_pos(frame) * - encoding: unused * - decoding: Read by user. *) pkt_pos: cint64; (** * duration of the corresponding packet, expressed in * AVStream->time_base units, 0 if unknown. * Code outside libavcodec should access this field using: * av_frame_get_pkt_duration(frame) * - encoding: unused * - decoding: Read by user. *) pkt_duration: cint64; (** * metadata. * Code outside libavcodec should access this field using: * av_frame_get_metadata(frame) * - encoding: Set by user. * - decoding: Set by libavcodec. *) metadata: PAVDictionary; (** * decode error flags of the frame, set to a combination of * FF_DECODE_ERROR_xxx flags if the decoder produced a frame, but there * were errors during the decoding. * Code outside libavcodec should access this field using: * av_frame_get_decode_error_flags(frame) * - encoding: unused * - decoding: set by libavcodec, read by user. *) decode_error_flags: cint; (** * number of audio channels, only used for audio. * Code outside libavcodec should access this field using: * av_frame_get_channels(frame) * - encoding: unused * - decoding: Read by user. *) channels: cint; (** * size of the corresponding packet containing the compressed * frame. It must be accessed using av_frame_get_pkt_size() and * av_frame_set_pkt_size(). * It is set to a negative value if unknown. * - encoding: unused * - decoding: set by libavcodec, read by user. *) pkt_size: cint; end; {TAVFrame} TAVCodecInternal = record end; PAVCodecInternal = ^TAVCodecInternal; PAVClass = ^TAVClass; PPAVCodec = ^PAVCodec; PAVCodec = ^TAVCodec; PAVHWAccel = ^TAVHWAccel; // int[4] PAVNDPArray = ^TAVNDPArray; TAVNDPArray = array [0..AV_NUM_DATA_POINTERS - 1] of cint; // int (*func)(struct AVCodecContext *c2, void *arg) TExecuteFunc = function(c2: PAVCodecContext; arg: Pointer): cint; cdecl; // int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr) TExecute2Func = function(c2: PAVCodecContext; arg: Pointer; jobnr: cint; threadnr: cint): cint; cdecl; AVFieldOrder = ( AV_FIELD_UNKNOWN, AV_FIELD_PROGRESSIVE, AV_FIELD_TT, //< Top coded_first, top displayed first AV_FIELD_BB, //< Bottom coded first, bottom displayed first AV_FIELD_TB, //< Top coded first, bottom displayed first AV_FIELD_BT //< Bottom coded first, top displayed first ); (** * four components are given, that's all. * the last component is alpha *) PAVPicture = ^TAVPicture; TAVPicture = record data: array [0..AV_NUM_DATA_POINTERS - 1] of PByteArray; linesize: array [0..AV_NUM_DATA_POINTERS - 1] of cint; ///< number of bytes per line end; {TAVPicture} (** * 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. * Please use AVOptions (av_opt* / av_set/get*()) to access these fields from user * applications. * sizeof(AVCodecContext) must not be used outside libav*. *) TAVCodecContext = record {720} (** * information on struct for av_log * - set by avcodec_alloc_context3 *) av_class: PAVClass; log_level_offset: cint; codec_type: TAVMediaType; (* see AVMEDIA_TYPE_xxx *) codec: PAVCodec; codec_name: array [0..31] of AnsiChar; codec_id: TAVCodecID; (* see AV_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 than 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; (** * 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: cuint; {$IFDEF FF_API_SUB_ID} (** * @deprecated this field is unused *) sub_id: cint; {$IFEND} priv_data: pointer; (** * Private context used for internal data. * * Unlike priv_data, this is not codec-specific. It is used in general * libavcodec functions. *) internal: PAVCodecInternal; (** * Private data of the user, can be used to carry app specific stuff. * - encoding: Set by user. * - decoding: Set by user. *) opaque: pointer; (** * 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; (** * 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; (** * - encoding: Set by user. * - decoding: unused *) compression_level: cint; (** * CODEC_FLAG_*. * - encoding: Set by user. * - decoding: Set by user. *) flags: cint; (** * CODEC_FLAG2_* * - encoding: Set by user. * - decoding: Set by user. *) flags2: 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; (** * 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; (** * Codec delay. * * Encoding: Number of frames delay there will be from the encoder input to * the decoder output. (we assume the decoder matches the spec) * Decoding: Number of frames delay in addition to what a standard decoder * as specified in the spec would produce. * * Video: * Number of frames the decoded output will be delayed relative to the * encoded input. * * Audio: * For encoding, this is the number of "priming" samples added to the * beginning of the stream. The decoded output will be delayed by this * many samples relative to the input to the encoder. Note that this * field is purely informational and does not directly affect the pts * output by the encoder, which should always be based on the actual * presentation time, including any delay. * For decoding, this is the number of samples the decoder needs to * output before the decoder's output is valid. When seeking, you should * start decoding this many samples prior to your desired seek point. * * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. *) delay: cint; (* 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; (** * Bitstream width / height, may be different from width/height if lowres enabled. * - encoding: unused * - decoding: Set by user before init if known. Codec should override / dynamically change if needed. *) coded_width, coded_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 AV_PIX_FMT_xxx. * May be set by the demuxer if known from headers. * May be overridden 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; (** * 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; (** * 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: PAVNDPArray; y: cint; type_: cint; height: cint); cdecl; (** * 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; (** * 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; {$IFDEF FF_API_MPV_GLOBAL_OPTS} (** * luma single coefficient elimination threshold * - encoding: Set by user. * - decoding: unused *) luma_elim_threshold: cint; {deprecated} (** * chroma single coeff elimination threshold * - encoding: Set by user. * - decoding: unused *) chroma_elim_threshold: cint; {deprecated} {$ENDIF} (** * qscale offset between IP and B-frames * - encoding: Set by user. * - decoding: unused *) b_quant_offset: cfloat; (** * 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; (** * 0-> h263 quant 1-> mpeg quant * - encoding: Set by user. * - decoding: unused *) mpeg_quant: cint; (** * 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; (** * 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; (** * slice count * - encoding: Set by libavcodec. * - decoding: Set by user (or 0). *) slice_count: cint; (** * prediction method (needed for huffyuv) * - encoding: Set by user. * - decoding: unused *) prediction_method: cint; (** * slice offsets in the frame in bytes * - encoding: Set/allocated by libavcodec. * - decoding: Set/allocated by user (or NULL). *) slice_offset: PCint; (** * 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; (** * 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; (** * 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; {$IFDEF FF_API_COLOR_TABLE_ID} (** * 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; {deprecated} {$ENDIF} (** * slice flags * - encoding: unused * - decoding: Set by user. *) slice_flags: cint; (** * XVideo Motion Acceleration * - encoding: forbidden * - decoding: set by decoder *) xvmc_acceleration: cint; (** * macroblock decision mode * - encoding: Set by user. * - decoding: unused *) mb_decision: cint; (** * custom intra quantization matrix * - encoding: Set by user, can be NULL. * - decoding: Set by libavcodec. *) intra_matrix: PWord; (** * custom inter quantization matrix * - encoding: Set by user, can be NULL. * - decoding: Set by libavcodec. *) inter_matrix: PWord; (** * scene change detection threshold * 0 is default, larger means fewer detected scene changes. * - encoding: Set by user. * - decoding: unused *) scenechange_threshold: cint; (** * noise reduction strength * - encoding: Set by user. * - decoding: unused *) noise_reduction: cint; {$IFDEF FF_API_INTER_THRESHOLD} (** * * - encoding: Set by user. * - decoding: unused *) inter_threshold: cint; {deprecated} {$ENDIF} {$IFDEF FF_API_MPV_GLOBAL_OPTS} (** * quantizer noise shaping * - encoding: Set by user. * - decoding: unused *) quantizer_noise_shaping: cint; {deprecated} {$ENDIF} (** * 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; (** * 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; (** * 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: Set by user. * - decoding: unused *) bidir_refine: cint; (** * * - encoding: Set by user. * - decoding: unused *) brd_scale: 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; (** * 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; (** * Adjust sensitivity of b_frame_strategy 1. * - encoding: Set by user. * - decoding: unused *) b_sensitivity: cint; (** * 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; (** * Number of slices. * Indicates number of picture subdivisions. Used for parallelized * decoding. * - encoding: Set by user * - decoding: unused *) slices: cint; (** Field order * - encoding: set by libavcodec * - decoding: Set by user. *) field_order: AVFieldOrder; (* audio only *) sample_rate: cint; ///< samples per second channels: cint; ///< number of audio channels (** * audio sample format * - encoding: Set by user. * - decoding: Set by libavcodec. *) sample_fmt: TAVSampleFormat; ///< sample format (* The following data should not be initialized. *) (** * Number of samples per channel in an audio frame. * * - encoding: set by libavcodec in avcodec_open2(). Each submitted frame * except the last must contain exactly frame_size samples per channel. * May be 0 when the codec has CODEC_CAP_VARIABLE_FRAME_SIZE set, then the * frame size is not restricted. * - decoding: may be set by some decoders to indicate constant frame size *) frame_size: cint; (** * Frame counter, set by libavcodec. * * - decoding: total number of frames returned from the decoder so far. * - encoding: total number of frames passed to the encoder so far. * * @note the counter is not incremented if encoding/decoding resulted in * an error. *) frame_number: cint; ///< audio or video frame number (** * number of bytes per packet if constant and known or 0 * Used by some WAV based audio codecs. *) block_align: cint; (** * Audio cutoff bandwidth (0 means "automatic") * - encoding: Set by user. * - decoding: unused *) cutoff: cint; {$IFDEF FF_API_REQUEST_CHANNELS} (** * Decoder should decode to this many channels if it can (0 for default) * - encoding: unused * - decoding: Set by user. * @deprecated Deprecated in favor of request_channel_layout. *) request_channels: cint; {deprecated} {$IFEND} (** * Audio channel layout. * - encoding: set by user. * - decoding: set by user, may be overwritten by libavcodec. *) channel_layout: cuint64; (** * Request decoder to use this channel layout if it can (0 for default) * - encoding: unused * - decoding: Set by user. *) request_channel_layout: cuint64; (** * Type of service that the audio stream conveys. * - encoding: Set by user. * - decoding: Set by libavcodec. *) audio_service_type: TAVAudioServiceType; (** * desired sample format * - encoding: Not used. * - decoding: Set by user. * Decoder will decode to this format if it can. *) request_sample_fmt: TAVSampleFormat; (** * Called at the beginning of each frame to get a buffer for it. * * The function will set AVFrame.data[], AVFrame.linesize[]. * AVFrame.extended_data[] must also be set, but it should be the same as * AVFrame.data[] except for planar audio with more channels than can fit * in AVFrame.data[]. In that case, AVFrame.data[] shall still contain as * many data pointers as it can hold. * * 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. * * AVFrame.data[] should be 32- or 16-byte-aligned unless the CPU doesn't * need it. avcodec_default_get_buffer() aligns the output buffer properly, * but if get_buffer() is overridden then alignment considerations should * be taken into account. * * @see avcodec_default_get_buffer() * * Video: * * 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 frame multithreading is used and thread_safe_callbacks is set, * it may be called from a different thread, but not from more than one at * once. Does not need to be reentrant. * * @see release_buffer(), reget_buffer() * @see avcodec_align_dimensions2() * * Audio: * * Decoders request a buffer of a particular size by setting * AVFrame.nb_samples prior to calling get_buffer(). The decoder may, * however, utilize only part of the buffer by setting AVFrame.nb_samples * to a smaller value in the output frame. * * Decoders cannot use the buffer after returning from * avcodec_decode_audio4(), so they will not call release_buffer(), as it * is assumed to be released immediately upon return. In some rare cases, * a decoder may need to call get_buffer() more than once in a single * call to avcodec_decode_audio4(). In that case, when get_buffer() is * called again after it has already been called once, the previously * acquired buffer is assumed to be released at that time and may not be * reused by the decoder. * * As a convenience, av_samples_get_buffer_size() and * av_samples_fill_arrays() in libavutil may be used by custom get_buffer() * functions to find the required data size and to fill data pointers and * linesize. In AVFrame.linesize, only linesize[0] may be set for audio * since all planes must be the same size. * * @see av_samples_get_buffer_size(), av_samples_fill_arrays() * * - 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; (** * 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; (* - 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; (** * ratecontrol qmin qmax limiting method * 0-> clipping, 1-> use a nice continuous function to limit qscale wthin qmin/qmax. * - encoding: Set by user. * - decoding: unused *) rc_qsquish: cfloat; rc_qmod_amp: cfloat; rc_qmod_freq: cint; (** * decoder bitstream buffer size * - encoding: Set by user. * - decoding: unused *) rc_buffer_size: cint; (** * ratecontrol override, see RcOverride * - encoding: Allocated/set/freed by user. * - decoding: unused *) rc_override_count: cint; rc_override: PRcOverride; (** * rate control equation * - encoding: Set by user * - decoding: unused *) rc_eq: {const} PAnsiChar; (** * maximum bitrate * - encoding: Set by user. * - decoding: unused *) rc_max_rate: cint; (** * minimum bitrate * - encoding: Set by user. * - decoding: unused *) rc_min_rate: cint; rc_buffer_aggressivity: cfloat; (** * initial complexity for pass1 ratecontrol * - encoding: Set by user. * - decoding: unused *) rc_initial_cplx: cfloat; (** * Ratecontrol attempt to use, at maximum, 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, times the amount needed to prevent a vbv overflow. * - encoding: Set by user. * - decoding: unused. *) rc_min_vbv_overflow_use: cfloat; (** * 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; (** * coder type * - encoding: Set by user. * - decoding: unused *) coder_type: cint; (** * context model * - encoding: Set by user. * - decoding: unused *) context_model: cint; (** * minimum Lagrange multipler * - encoding: Set by user. * - decoding: unused *) lmin: cint; (** * maximum Lagrange multipler * - encoding: Set by user. * - decoding: unused *) lmax: 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; (** * trellis RD quantization * - encoding: Set by user. * - decoding: unused *) trellis: cint; (** * - encoding: Set by user. * - decoding: unused *) min_prediction_order: cint; (** * - encoding: Set by user. * - decoding: unused *) max_prediction_order: cint; (** * GOP timecode frame start number, in non drop frame format * - encoding: Set by user, in non drop frame format * - decoding: Set by libavcodec (timecode in the 25 bits format, -1 if unset) *) timecode_frame_start: cint64; (* 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; 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 *) (* 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; (** * pass1 encoding statistics output buffer * - encoding: Set by libavcodec. * - decoding: unused *) stats_out: PAnsiChar; (** * pass2 encoding statistics input buffer * Concatenated stuff from stats_out of pass1 should be placed here. * - encoding: Allocated/set/freed by user. * - decoding: unused *) stats_in: PAnsiChar; (** * Work around bugs in encoders which sometimes cannot be detected automatically. * - encoding: Set by user * - decoding: Set by user *) workaround_bugs: 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; (** * error concealment flags * - encoding: unused * - decoding: Set by user. *) error_concealment: cint; (** * debug * - encoding: Set by user. * - decoding: Set by user. *) debug: cint; (** * debug * - encoding: Set by user. * - decoding: Set by user. *) debug_mv: cint; (** * Error recognition; may misdetect some more or less valid parts as errors. * - encoding: unused * - decoding: Set by user. *) err_recognition: cint; (** * 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; (** * Hardware accelerator in use * - encoding: unused. * - decoding: Set by libavcodec *) hwaccel: PAVHWAccel; (** * 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; (** * error * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR. * - decoding: unused *) error: array [0..AV_NUM_DATA_POINTERS - 1] of cuint64; (** * DCT algorithm, see FF_DCT_* below * - encoding: Set by user. * - decoding: unused *) dct_algo: cint; (** * IDCT algorithm, see FF_IDCT_* below. * - encoding: Set by user. * - decoding: Set by user. *) idct_algo: cint; {$IFDEF FF_API_DSP_MASK} (** * Unused. * @deprecated use av_set_cpu_flags_mask() instead. *) dsp_mask: cuint; {deprecated} {$IFEND} (** * bits per sample/pixel from the demuxer (needed for huffyuv). * - encoding: Set by libavcodec. * - decoding: Set by user. *) bits_per_coded_sample: cint; (** * Bits per sample/pixel of internal libavcodec pixel/sample format. * - encoding: set by user. * - decoding: set by libavcodec. *) bits_per_raw_sample: cint; (** * low resolution decoding, 1-> 1/2 size, 2->1/4 size * - encoding: unused * - decoding: Set by user. *) lowres: cint; (** * the picture in the bitstream * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. *) coded_frame: PAVFrame; (** * 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; (** * Which multithreading methods to use. * Use of FF_THREAD_FRAME will increase decoding delay by one frame per thread, * so clients which cannot provide future frames should not use it. * * - encoding: Set by user, otherwise the default is used. * - decoding: Set by user, otherwise the default is used. *) thread_type: cint; (** * Which multithreading methods are in use by the codec. * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. *) active_thread_type: cint; (** * Set by the client if its custom get_buffer() callback can be called * from another thread, which allows faster multithreaded decoding. * draw_horiz_band() will be called from other threads regardless of this setting. * Ignored if the default get_buffer() is used. * - encoding: Set by user. * - decoding: Set by user. *) thread_safe_callbacks: cint; (** * The codec may call this to execute several independent things. * It will return only after finishing all tasks. * The user may replace this with some multithreaded implementation, * the default implementation will execute the parts serially. * @param count the number of things to execute * - encoding: Set by libavcodec, user can override. * - decoding: Set by libavcodec, user can override. *) execute: function (c: PAVCodecContext; func: TExecuteFunc; arg: Pointer; ret: PCint; count: cint; size: cint): cint; cdecl; (** * 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; (** * thread opaque * Can be used by execute() to store some per AVCodecContext stuff. * - encoding: set by execute() * - decoding: set by execute() *) thread_opaque: pointer; (** * noise vs. sse weight for the nsse comparsion function * - encoding: Set by user. * - decoding: unused *) nsse_weight: cint; (** * profile * - encoding: Set by user. * - decoding: Set by libavcodec. *) profile: cint; (** * level * - encoding: Set by user. * - decoding: Set by libavcodec. *) level: 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; (** * Header containing style information for text subtitles. * For SUBTITLE_ASS subtitle type, it should contain the whole ASS * [Script Info] and [V4+ Styles] section, plus the [Events] line and * the Format line following. It shouldn't include any Dialogue line. * - encoding: Set/allocated/freed by user (before avcodec_open2()) * - decoding: Set/allocated/freed by libavcodec (by avcodec_open2()) *) subtitle_header: Pcuint8; subtitle_header_size: cint; (** * Simulates errors in the bitstream to test error concealment. * - encoding: Set by user. * - decoding: unused *) error_rate: cint; (** * Current packet as passed into the decoder, to avoid having * to pass the packet into every function. Currently only valid * inside lavc and get/release_buffer callbacks. * - decoding: set by avcodec_decode_*, read by get_buffer() for setting pkt_pts * - encoding: unused *) pkt: PAVPacket; (** * VBV delay coded in the last frame (in periods of a 27 MHz clock). * Used for compliant TS muxing. * - encoding: Set by libavcodec. * - decoding: unused. *) vbv_delay: cuint64; (** * Timebase in which pkt_dts/pts and AVPacket.dts/pts are. * Code outside libavcodec should access this field using: * av_codec_{get,set}_pkt_timebase(avctx) * - encoding unused. * - decodimg set by user *) pkt_timebase: TAVRational; (** * AVCodecDescriptor * Code outside libavcodec should access this field using: * av_codec_{get,set}_codec_descriptor(avctx) * - encoding: unused. * - decoding: set by libavcodec. *) codec_descriptor: PAVCodecDescriptor; (** * Current statistics for PTS correction. * - decoding: maintained and used by libavcodec, not intended to be used by user apps * - encoding: unused *) pts_correction_num_faulty_pts: cint64; /// Number of incorrect PTS values so far pts_correction_num_faulty_dts: cint64; /// Number of incorrect DTS values so far pts_correction_last_pts: cint64; /// PTS of the last frame pts_correction_last_dts: cint64; /// DTS of the last frame (** * Current frame metadata. * - decoding: maintained and used by libavcodec, not intended to be used by user apps * - encoding: unused *) metadata: PAVDictionary; (** * Character encoding of the input subtitles file. * - decoding: set by user * - encoding: unused *) sub_charenc: PAnsiChar; (** * Subtitles character encoding mode. Formats or codecs might be adjusting * this setting (if they are doing the conversion themselves for instance). * - decoding: set by libavcodec * - encoding: unused *) sub_charenc_mode: cint; end; {TAVCodecContext} (** * AVProfile. *) PAVProfile = ^TAVProfile; TAVProfile = record profile: cint; name: {const} PAnsiChar; ///< short name for the profile end; {TAVProfile} TAVSubtitleType = ( SUBTITLE_NONE, SUBTITLE_BITMAP, ///< A bitmap, pict will be set (** * Plain text, the text field must be set by the decoder and is * authoritative. ass and pict fields may contain approximations. *) SUBTITLE_TEXT, (** * Formatted text, the ass field must be set by the decoder and is * authoritative. pict and text fields may contain approximations. *) SUBTITLE_ASS ); {TAVSubtitleType} PPAVSubtitleRect = ^PAVSubtitleRect; PAVSubtitleRect = ^TAVSubtitleRect; TAVSubtitleRect = record x: cint; ///< top left corner of pict, undefined when pict is not set y: cint; ///< top left corner of pict, undefined when pict is not set w: cint; ///< width of pict, undefined when pict is not set h: cint; ///< height of pict, undefined when pict is not set nb_colors: cint; ///< number of colors in pict, undefined when pict is not set (** * data+linesize for the bitmap of this subtitle. * can be set for text/ass as well once they where rendered *) pict: TAVPicture; type_: TAVSubtitleType; text: PAnsiChar; ///< 0 terminated plain UTF-8 text (** * 0 terminated ASS/SSA compatible event line. * The presentation of this is unaffected by the other values in this * struct. *) ass: PAnsiChar; flags: cint; end; {TAVSubtitleRect} PPAVSubtitle = ^PAVSubtitle; PAVSubtitle = ^TAVSubtitle; TAVSubtitle = record format: cuint16; (* 0 = graphics *) start_display_time: cuint32; (* relative to packet pts, in ms *) end_display_time: cuint32; (* relative to packet pts, in ms *) num_rects: cuint; rects: PPAVSubtitleRect; pts: cint64; ///< Same as packet pts, in AV_TIME_BASE end; {TAVSubtitle} (** * AVCodec. *) TAVCodec = record (** * Name of the codec implementation. * The name is globally unique among encoders and among decoders (but an * encoder and a decoder can share the same name). * This is the primary way to find a codec from the user perspective. *) name: PAnsiChar; (** * 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; type_: TAVMediaType; id: TAVCodecID; (** * Codec capabilities. * see CODEC_CAP_* *) capabilities: cint; 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 supported_samplerates: {const} PCint; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0 sample_fmts: {const} PAVSampleFormatArray; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1 channel_layouts: {const} PCuint64; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0 max_lowres: byte; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0 priv_class: {const} PAVClass; ///< AVClass for the private context profiles: {const} PAVProfile; ///< array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN} (***************************************************************** * No fields below this line are part of the public API. They * may not be used outside of libavcodec and can be changed and * removed at will. * New public fields should be added right above. ***************************************************************** *) priv_data_size: cint; next: PAVCodec; (** * @name Frame-level threading support functions * @ *) (** * If defined, called on thread contexts when they are created. * If the codec allocates writable tables in init(), re-allocate them here. * priv_data will be set to a copy of the original. *) init_thread_copy: function (avctx: PAVCodecContext): Pcint; cdecl; (** * Copy necessary context variables from a previous thread context to the current one. * If not defined, the next thread will start automatically; otherwise, the codec * must call ff_thread_finish_setup(). * * dst and src will (rarely) point to the same context, in which case memcpy should be skipped. *) update_thread_context: function (dst: PAVCodecContext; src: {const} PAVCodecContext): cint; cdecl; (** @} *) (** * Private codec-specific defaults. *) defaults: {const} pointer; (** * Initialize codec static data, called from avcodec_register(). *) init_static_data: procedure (codec: PAVCodec); cdecl; init: function (avctx: PAVCodecContext): cint; cdecl; encode_sub: function (avctx: PAVCodecContext; buf: PByteArray; buf_size: cint; sub: {const} PAVSubtitle): cint; cdecl; (** * Encode data to an AVPacket. * * @param avctx codec context * @param avpkt output AVPacket (may contain a user-provided buffer) * @param[in] frame AVFrame containing the raw data to be encoded * @param[out] got_packet_ptr encoder sets to 0 or 1 to indicate that a * non-empty packet was returned in avpkt. * @return 0 on success, negative error code on failure *) encode2: function (avctx: PAVCodecContext; avpkt: PAVPacket; frame: {const} PAVFrame; got_packet_ptr: Pcint): cint; cdecl; decode: function (avctx: PAVCodecContext; outdata: pointer; var outdata_size: cint; avpkt: PAVPacket): cint; cdecl; close: function (avctx: PAVCodecContext): cint; cdecl; (** * Flush buffers. * Will be called when seeking *) flush: procedure (avctx: PAVCodecContext); cdecl; end; {TAVCodec} (** * AVHWAccel. *) TAVHWAccel = record (** * Name of the hardware accelerated codec. * The name is globally unique among encoders and among decoders (but an * encoder and a decoder can share the same name). *) name: PAnsiChar; (** * Type of codec implemented by the hardware accelerator. * * See AVMediaType_xxx *) type_: TAVMediaType; (** * Codec implemented by the hardware accelerator. * * See AV_CODEC_ID_xxx *) id: TAVCodecID; (** * Supported pixel format. * * Only hardware accelerated formats are supported here. *) pix_fmt: PAVPixelFormat; (** * Hardware accelerated codec capabilities. * see FF_HWACCEL_CODEC_CAP_* *) capabilities: cint; next: PAVHWAccel; (** * Called at the beginning of each frame or field picture. * * Meaningful frame information (codec specific) is guaranteed to * be parsed at this point. This function is mandatory. * * Note that buf can be NULL along with buf_size set to 0. * Otherwise, this means the whole frame is available at this point. * * @param avctx the codec context * @param buf the frame data buffer base * @param buf_size the size of the frame in bytes * @return zero if successful, a negative value otherwise *) start_frame: function (avctx: PAVCodecContext; buf: {const} PByteArray; buf_size: cuint): cint; cdecl; (** * Callback for each slice. * * Meaningful slice information (codec specific) is guaranteed to * be parsed at this point. This function is mandatory. * * @param avctx the codec context * @param buf the slice data buffer base * @param buf_size the size of the slice in bytes * @return zero if successful, a negative value otherwise *) decode_slice: function (avctx: PAVCodecContext; buf: {const} PByteArray; buf_size: cuint): cint; cdecl; (** * Called at the end of each frame or field picture. * * The whole picture is parsed at this point and can now be sent * to the hardware accelerator. This function is mandatory. * * @param avctx the codec context * @return zero if successful, a negative value otherwise *) end_frame: function (avctx: PAVCodecContext): cint; cdecl; (** * Size of HW accelerator private data. * * Private data is allocated with av_mallocz() before * AVCodecContext.get_buffer() and deallocated after * AVCodecContext.release_buffer(). *) priv_data_size: cint; end; {TAVHWAccel} (** * @defgroup lavc_picture AVPicture * * Functions for working with AVPicture * @ *) (** * Accessors for some AVFrame fields. * The position of these field in the structure is not part of the ABI, * they should not be accessed directly outside libavcodec. *) function av_frame_get_best_effort_timestamp(frame: {const} PAVFrame): cint64; cdecl; external av__codec; overload; procedure av_frame_set_best_effort_timestamp(frame: PAVFrame; val: cint64); cdecl; external av__codec; overload; function av_frame_get_pkt_duration (frame: {const} PAVFrame): cint64; cdecl; external av__codec; overload; procedure av_frame_get_pkt_duration (frame: PAVFrame; val: cint64); cdecl; external av__codec; overload; function av_frame_get_pkt_pos (frame: {const} PAVFrame): cint64; cdecl; external av__codec; overload; procedure av_frame_get_pkt_pos (frame: PAVFrame; val: cint64); cdecl; external av__codec; overload; function av_frame_get_channel_layout (frame: {const} PAVFrame): cint64; cdecl; external av__codec; overload; procedure av_frame_get_channel_layout (frame: PAVFrame; val: cint64); cdecl; external av__codec; overload; function av_frame_get_channels (frame: {const} PAVFrame): cint; cdecl; external av__codec; procedure av_frame_set_channels (frame: PAVFrame; val: cint); cdecl; external av__codec; function av_frame_get_sample_rate (frame: {const} PAVFrame): cint; cdecl; external av__codec; procedure av_frame_set_sample_rate (frame: PAVFrame; val: cint); cdecl; external av__codec; function av_frame_get_metadata (frame: {const} PAVFrame): PAVDictionary; cdecl; external av__codec; procedure av_frame_set_metadata (frame: PAVFrame; val: PAVDictionary); cdecl; external av__codec; function av_frame_get_decode_error_flags (frame: {const} PAVFrame): cint; cdecl; external av__codec; procedure av_frame_set_decode_error_flags (frame: PAVFrame; val: cint); cdecl; external av__codec; function av_frame_get_pkt_size (frame: {const} PAVFrame): cint; cdecl; external av__codec; procedure av_frame_set_pkt_size (frame: PAVFrame; val: cint); cdecl; external av__codec; function av_codec_get_pkt_timebase(avctx: {const} PAVCodecContext): TAVRational; cdecl; external av__codec; procedure av_codec_set_pkt_timebase(avctx: {const} PAVCodecContext; val: TAVRational); cdecl; external av__codec; function av_codec_get_codec_descriptor(avctx: {const} PAVCodecContext): PAVCodecDescriptor; cdecl; external av__codec; procedure av_codec_set_codec_descriptor(avctx: {const} PAVCodecContext; desc: {const} PAVCodecDescriptor); cdecl; external av__codec; const AV_SUBTITLE_FLAG_FORCED = $00000001; (** * If c is NULL, returns the first registered codec, * if c is non-NULL, returns the next registered codec after c, * or NULL if c is the last one. *) function av_codec_next(c: {const} PAVCodec): PAVCodec; cdecl; external av__codec; (** * Return the LIBAVCODEC_VERSION_INT constant. *) function avcodec_version(): cuint; cdecl; external av__codec; (** * Return the libavcodec build-time configuration. *) function avcodec_configuration(): PAnsiChar; cdecl; external av__codec; (** * Return the libavcodec license. *) function avcodec_license(): PAnsiChar; cdecl; external av__codec; (** * Register the codec codec and initialize libavcodec. * * @warning either this function or avcodec_register_all() must be called * before any other libavcodec functions. * * @see avcodec_register_all() *) procedure avcodec_register(codec: PAVCodec); cdecl; external av__codec; (** * Register all the codecs, parsers and bitstream filters which were enabled at * configuration time. If you do not call this function you can select exactly * which formats you want to support, by using the individual registration * functions. * * @see register_avcodec * @see avcodec_register * @see av_register_codec_parser * @see av_register_bitstream_filter *) procedure avcodec_register_all(); cdecl; external av__codec; {$IFDEF FF_API_ALLOC_CONTEXT} (** * 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 * * @deprecated use avcodec_alloc_context3() *) function avcodec_alloc_context(): PAVCodecContext; cdecl; external av__codec; deprecated; (** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! * we WILL change its arguments and name a few times! *) function avcodec_alloc_context2(ctype: TAVMediaType): PAVCodecContext; cdecl; external av__codec; deprecated; (** * Set the fields of the given AVCodecContext to default values. * * @param s The AVCodecContext of which the fields should be set to default values. * @deprecated use avcodec_get_context_defaults3 *) procedure avcodec_get_context_defaults(s: PAVCodecContext); cdecl; external av__codec; deprecated; (** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! * we WILL change its arguments and name a few times! *) procedure avcodec_get_context_defaults2(s: PAVCodecContext; ctype: TAVMediaType); cdecl; external av__codec; deprecated; {$IFEND} (** * Allocate an AVCodecContext and set its fields to default values. The * resulting struct can be deallocated by calling avcodec_close() on it followed * by av_free(). * * @param codec if non-NULL, allocate private data and initialize defaults * for the given codec. It is illegal to then call avcodec_open2() * with a different codec. * * @return An AVCodecContext filled with default values or NULL on failure. * @see avcodec_get_context_defaults *) function avcodec_alloc_context3(codec: {const} PAVCodec): PAVCodecContext; cdecl; external av__codec; (** * Set the fields of the given AVCodecContext to default values corresponding * to the given codec (defaults may be codec-dependent). * * Do not call this function if a non-NULL codec has been passed * to avcodec_alloc_context3() that allocated this AVCodecContext. * If codec is non-NULL, it is illegal to call avcodec_open2() with a * different codec on this AVCodecContext. *) procedure avcodec_get_context_defaults3(s: PAVCodecContext; codec: {const} PAVCodec); cdecl; external av__codec; (** * Get the AVClass for AVCodecContext. It can be used in combination with * AV_OPT_SEARCH_FAKE_OBJ for examining options. * * @see av_opt_find(). *) function avcodec_get_class(): {const} PAVClass; cdecl; external av__codec; (** * Get the AVClass for AVFrame. It can be used in combination with * AV_OPT_SEARCH_FAKE_OBJ for examining options. * * @see av_opt_find(). *) function avcodec_get_frame_class(): {const} PAVClass; cdecl; external av__codec; (** * Get the AVClass for AVSubtitleRect. It can be used in combination with * AV_OPT_SEARCH_FAKE_OBJ for examining options. * * @see av_opt_find(). *) function avcodec_get_subtitle_rect_class(): {const} PAVClass; cdecl; external av__codec; (** * Copy the settings of the source AVCodecContext into the destination * AVCodecContext. The resulting destination codec context will be * unopened, i.e. you are required to call avcodec_open2() before you * can use this AVCodecContext to decode/encode video/audio data. * * @param dest target codec context, should be initialized with * avcodec_alloc_context3(), 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; (** * Allocate an AVFrame and set its fields to default values. The resulting * struct must be freed using avcodec_free_frame(). * * @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; (** * Set the fields of the given AVFrame to default values. * * @param frame The AVFrame of which the fields should be set to default values. *) procedure avcodec_get_frame_defaults(frame: PAVFrame); cdecl; external av__codec; (** * Free the frame and any dynamically allocated objects in it, * e.g. extended_data. * * @param frame frame to be freed. The pointer will be set to NULL. * * @warning this function does NOT free the data buffers themselves * (it does not know how, since they might have been allocated with * a custom get_buffer()). *) procedure avcodec_free_frame(frame: PPAVFrame); cdecl; external av__codec; {$IFDEF FF_API_AVCODEC_OPEN} (** * 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(AV_CODEC_ID_H264); * if (!codec) * exit(1); * * context = avcodec_alloc_context3(codec); * * 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_context3, avcodec_find_decoder, avcodec_find_encoder, avcodec_close * * @deprecated use avcodec_open2 *) function avcodec_open(avctx: PAVCodecContext; codec: PAVCodec): cint; cdecl; external av__codec; deprecated; {$IFEND} (** * Initialize the AVCodecContext to use the given AVCodec. Prior to using this * function the context has to be allocated with avcodec_alloc_context3(). * * 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(); * av_dict_set(&opts, "b", "2.5M", 0); * codec = avcodec_find_decoder(AV_CODEC_ID_H264); * if (!codec) * exit(1); * * context = avcodec_alloc_context3(codec); * * if (avcodec_open2(context, codec, opts) < 0) * exit(1); * @endcode * * @param avctx The context to initialize. * @param codec The codec to open this context for. If a non-NULL codec has been * previously passed to avcodec_alloc_context3() or * avcodec_get_context_defaults3() for this context, then this * parameter MUST be either NULL or equal to the previously passed * codec. * @param options A dictionary filled with AVCodecContext and codec-private options. * On return this object will be filled with options that were not found. * * @return zero on success, a negative value on error * @see avcodec_alloc_context3(), avcodec_find_decoder(), avcodec_find_encoder(), * av_dict_set(), av_opt_find(). *) function avcodec_open2(avctx: PAVCodecContext; codec: {const} PAVCodec; options: PPAVDictionary): cint; cdecl; external av__codec; (** * Close a given AVCodecContext and free all the data associated with it * (but not the AVCodecContext itself). * * Calling this function on an AVCodecContext that hasn't been opened will free * the codec-specific data allocated in avcodec_alloc_context3() / * avcodec_get_context_defaults3() with a non-NULL codec. Subsequent calls will * do nothing. *) function avcodec_close(avctx: PAVCodecContext): cint; cdecl; external av__codec; (** * Free all allocated data in the given subtitle struct. * * @param sub AVSubtitle to free. *) procedure avsubtitle_free(sub: PAVSubtitle); cdecl; external av__codec; (** * @addtogroup lavc_packet * @ *) (* * Default packet destructor. *) procedure av_destruct_packet(pkt: PAVPacket); cdecl; external av__codec; (* * Initialize optional fields of a packet with default values. * * Note, this does not touch the data and size members, which have to be * initialized separately. * * @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; (** * Increase packet size, correctly zeroing padding * * @param pkt packet * @param grow_by number of bytes by which to increase the size of the packet *) function av_grow_packet(pkt: PAVPacket; grow_by: cint): 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; (** * Copy packet, including contents * * @return 0 on success, negative AVERROR on fail *) function av_copy_packet(dst: PAVPacket; src: PAVPacket): cint; cdecl; external av__codec; (* * Free a packet. * * @param pkt packet to free *) procedure av_free_packet(pkt: PAVPacket); cdecl; external av__codec; (** * Allocate new information of a packet. * * @param pkt packet * @param type side information type * @param size side information size * @return pointer to fresh allocated data or NULL otherwise *) function av_packet_new_side_data(pkt: PAVPacket; type_: AVPacketSideDataType; size: cint): PByte; cdecl; external av__codec; (** * Shrink the already allocated side data buffer * * @param pkt packet * @param type side information type * @param size new side information size * @return 0 on success, < 0 on failure *) function av_packet_shrink_side_data(pkt: PAVPacket; type_: AVPacketSideDataType; size: cint): cint; cdecl; external av__codec; (** * Get side information from packet. * * @param pkt packet * @param type desired side information type * @param size pointer for side information size to store (optional) * @return pointer to data if present or NULL otherwise *) function av_packet_get_side_data(pkt: PAVPacket; type_: AVPacketSideDataType; size: Pcint): PByte; cdecl; external av__codec; function av_packet_merge_side_data(pkt: PAVPacket): cint; cdecl; external av__codec; function av_packet_split_side_data(pkt: PAVPacket): cint; cdecl; external av__codec; (** * Find a registered decoder with a matching codec ID. * * @param id CodecID of the requested decoder * @return A decoder if one was found, NULL otherwise. *) function avcodec_find_decoder(id: TAVCodecID): 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; function avcodec_default_get_buffer (s: PAVCodecContext; pic: PAVFrame): cint; cdecl; external av__codec; procedure avcodec_default_release_buffer (s: PAVCodecContext; pic: PAVFrame); cdecl; external av__codec; function avcodec_default_reget_buffer (s: PAVCodecContext; pic: PAVFrame): cint; cdecl; external av__codec; (** * Return the amount of padding in pixels which the get_buffer callback must * provide around the edge of the image for codecs which do not have the * CODEC_FLAG_EMU_EDGE flag. * * @return Required padding in pixels. *) function avcodec_get_edge_width(): cuint; cdecl; external av__codec; (** * Modify width and height values so that they will result in a memory * buffer that is acceptable for the codec if you do not use any horizontal * padding. * * May only be used if a codec with CODEC_CAP_DR1 has been opened. * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased * according to avcodec_get_edge_width() before. *) procedure avcodec_align_dimensions(s: PAVCodecContext; width: PCint; height: PCint); cdecl; external av__codec; (** * Modifiy width and height values so that they will result in a memory * buffer that is acceptable for the codec if you also ensure that all * line sizes are a multiple of the respective linesize_align[i]. * * May only be used if a codec with CODEC_CAP_DR1 has been opened. * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased * according to avcodec_get_edge_width() before. *) procedure avcodec_align_dimensions2(s: PAVCodecContext; width: PCint; height: PCint; linesize_align: PAVNDPArray); cdecl; external av__codec; {$IFDEF FF_API_OLD_DECODE_AUDIO} (** * Wrapper function which calls avcodec_decode_audio4. * * @deprecated Use avcodec_decode_audio4 instead. * * 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. * * @warning You must not provide a custom get_buffer() when using * avcodec_decode_audio3(). Doing so will override it with * avcodec_default_get_buffer. Use avcodec_decode_audio4() instead, * which does allow the application to provide a custom get_buffer(). * * @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 Codecs which have the CODEC_CAP_DELAY capability set 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, sample type in avctx->sample_fmt * If the sample format is planar, each channel plane will * be the same size, with no padding between channels. * @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; deprecated; {$IFEND} (** * Decode the audio frame of size avpkt->size from avpkt->data into frame. * * Some decoders may support multiple frames in a single AVPacket. Such * decoders would then just decode the first frame. In this case, * avcodec_decode_audio4 has to be called again with an AVPacket containing * the remaining data in order to decode the second frame, etc... * Even if no frames are returned, the packet needs to be fed to the decoder * with remaining data until it is completely consumed or an error occurs. * * @warning The input buffer, avpkt->data 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. * * @note You might have to align the input buffer. The alignment requirements * depend on the CPU and the decoder. * * @param avctx the codec context * @param[out] frame The AVFrame in which to store decoded audio samples. * Decoders request a buffer of a particular size by setting * AVFrame.nb_samples prior to calling get_buffer(). The * decoder may, however, only utilize part of the buffer by * setting AVFrame.nb_samples to a smaller value in the * output frame. * @param[out] got_frame_ptr Zero if no frame could be decoded, otherwise it is * non-zero. * @param[in] avpkt The input AVPacket containing the input buffer. * At least avpkt->data and avpkt->size should be set. Some * decoders might also require additional fields to be set. * @return A negative error code is returned if an error occurred during * decoding, otherwise the number of bytes consumed from the input * AVPacket is returned. *) function avcodec_decode_audio4(avctx: PAVCodecContext; frame: PAVFrame; got_frame_ptr: Pcint; avpkt: PAVPacket): cint; cdecl; external av__codec; (** * 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. * * @note Codecs which have the CODEC_CAP_DELAY capability set 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] 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: {const} PAVPacket): cint; cdecl; external av__codec; (* 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; (** * @defgroup lavc_parsing Frame parsing * @ *) const AV_PARSER_PTS_NB = 4; PARSER_FLAG_COMPLETE_FRAMES = $0001; PARSER_FLAG_ONCE = $0002; /// Set if the parser has a valid file offset PARSER_FLAG_FETCHED_OFFSET = $0004; PARSER_FLAG_USE_CODEC_TS = $1000; type (* frame parsing *) PAVCodecParserContext = ^TAVCodecParserContext; PAVCodecParser = ^TAVCodecParser; TAVCodecParserContext = record priv_data: pointer; parser: PAVCodecParser; frame_offset: cint64; (* offset of the current frame *) cur_offset: cint64; (* current offset (incremented by each av_parser_parse()) *) next_frame_offset: cint64; (* offset of the next frame *) (* video info *) pict_type: cint; (* XXX: put it back in AVCodecContext *) (** * This field is used for proper frame duration computation in lavf. * It signals, how much longer the frame duration of the current frame * is compared to normal frame duration. * * frame_duration = (1 + repeat_pict) * time_base * * It is used by codecs like H.264 to display telecined material. *) repeat_pict: cint; (* XXX: put it back in AVCodecContext *) pts: cint64; (* pts of the current frame *) dts: cint64; (* dts of the current frame *) (* private data *) last_pts: cint64; last_dts: cint64; fetch_timestamp: cint; cur_frame_start_index: cint; cur_frame_offset: array [0..AV_PARSER_PTS_NB - 1] of cint64; cur_frame_pts: array [0..AV_PARSER_PTS_NB - 1] of cint64; cur_frame_dts: array [0..AV_PARSER_PTS_NB - 1] of cint64; flags: cint; offset: cint64; ///< byte offset from starting packet start cur_frame_end: array [0..AV_PARSER_PTS_NB - 1] of cint64; (** * Set by parser to 1 for key frames and 0 for non-key frames. * It is initialized to -1, so if the parser doesn't set this flag, * old-style fallback using FF_I_TYPE picture type as key frames * will be used. *) key_frame: cint; (** * Time difference in stream time base units from the pts of this * packet to the point at which the output from the decoder has converged * independent from the availability of previous frames. That is, the * frames are virtually identical no matter if decoding started from * the very first frame or from this keyframe. * Is AV_NOPTS_VALUE if unknown. * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY * set. * * The purpose of this field is to allow seeking in streams that have no * keyframes in the conventional sense. It corresponds to the * recovery point SEI in H.264 and match_time_delta in NUT. It is also * essential for some types of subtitle streams to ensure that all * subtitles are correctly displayed after seeking. *) convergence_duration: cint64; // Timestamp generation support: (** * Synchronization point for start of timestamp generation. * * Set to >0 for sync point, 0 for no sync point and <0 for undefined * (default). * * For example, this corresponds to presence of H.264 buffering period * SEI message. *) dts_sync_point: cint; (** * Offset of the current timestamp against last timestamp sync point in * units of AVCodecContext.time_base. * * Set to INT_MIN when dts_sync_point unused. Otherwise, it must * contain a valid timestamp offset. * * Note that the timestamp of sync point has usually a nonzero * dts_ref_dts_delta, which refers to the previous sync point. Offset of * the next frame after timestamp sync point will be usually 1. * * For example, this corresponds to H.264 cpb_removal_delay. *) dts_ref_dts_delta: cint; (** * Presentation delay of current frame in units of AVCodecContext.time_base. * * Set to INT_MIN when dts_sync_point unused. Otherwise, it must * contain valid non-negative timestamp delta (presentation time of a frame * must not lie in the past). * * This delay represents the difference between decoding and presentation * time of the frame. * * For example, this corresponds to H.264 dpb_output_delay. *) pts_dts_delta: cint; (** * Position of the packet in file. * * Analogous to cur_frame_pts/dts *) cur_frame_pos: array [0..AV_PARSER_PTS_NB - 1] of cint64; (** * Byte position of currently parsed frame in stream. *) pos: cint64; (** * Previous frame byte position. *) last_pos: cint64; end; {AVCodecParserContext} TAVCodecParser = record codec_ids: array [0..4] of cint; (* several codec IDs are permitted *) priv_data_size: cint; parser_init: function(s: PAVCodecParserContext): cint; cdecl; parser_parse: function(s: PAVCodecParserContext; avctx: PAVCodecContext; poutbuf: {const} PPointer; poutbuf_size: PCint; buf: {const} PByteArray; buf_size: cint): cint; cdecl; parser_close: procedure(s: PAVCodecParserContext); cdecl; split: function(avctx: PAVCodecContext; buf: {const} PByteArray; buf_size: cint): cint; cdecl; next: PAVCodecParser; end; {AVCodecParser} function av_parser_next(c: PAVCodecParser): PAVCodecParser; cdecl; external av__codec; procedure av_register_codec_parser(parser: PAVCodecParser); cdecl; external av__codec; function av_parser_init(codec_id: cint): PAVCodecParserContext; cdecl; external av__codec; (** * 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; (** * @return 0 if the output buffer is a subset of the input, 1 if it is allocated and must be freed * @deprecated use AVBitstreamFilter *) 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; (** * @addtogroup lavc_encoding * @ *) (** * Find a registered encoder with a matching codec ID. * * @param id AVCodecID of the requested encoder * @return An encoder if one was found, NULL otherwise. *) function avcodec_find_encoder(id: TAVCodecID): 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; {$IFDEF FF_API_OLD_ENCODE_AUDIO} (** * Encode an audio frame from samples into buf. * * @deprecated Use avcodec_encode_audio2 instead. * * @note The output buffer should be at least FF_MIN_BUFFER_SIZE bytes large. * However, for codecs with avctx->frame_size equal to 0 (e.g. PCM) 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 codecs which have avctx->frame_size equal to 0 (e.g. PCM) the number of * samples read from samples is equal to: * buf_size * 8 / (avctx->channels * av_get_bits_per_sample(avctx->codec_id)) * This also implies that av_get_bits_per_sample() must not return 0 for these * codecs. * @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; deprecated; {$IFEND} (** * Encode a frame of audio. * * Takes input samples from frame and writes the next output packet, if * available, to avpkt. The output packet does not necessarily contain data for * the most recent frame, as encoders can delay, split, and combine input frames * internally as needed. * * @param avctx codec context * @param avpkt output AVPacket. * The user can supply an output buffer by setting * avpkt->data and avpkt->size prior to calling the * function, but if the size of the user-provided data is not * large enough, encoding will fail. If avpkt->data and * avpkt->size are set, avpkt->destruct must also be set. All * other AVPacket fields will be reset by the encoder using * av_init_packet(). If avpkt->data is NULL, the encoder will * allocate it. The encoder will set avpkt->size to the size * of the output packet. * * If this function fails or produces no output, avpkt will be * freed using av_free_packet() (i.e. avpkt->destruct will be * called to free the user supplied buffer). * @param[in] frame AVFrame containing the raw audio data to be encoded. * May be NULL when flushing an encoder that has the * CODEC_CAP_DELAY capability set. * If CODEC_CAP_VARIABLE_FRAME_SIZE is set, then each frame * can have any number of samples. * If it is not set, frame->nb_samples must be equal to * avctx->frame_size for all frames except the last. * The final frame may be smaller than avctx->frame_size. * @param[out] got_packet_ptr This field is set to 1 by libavcodec if the * output packet is non-empty, and to 0 if it is * empty. If the function returns an error, the * packet can be assumed to be invalid, and the * value of got_packet_ptr is undefined and should * not be used. * @return 0 on success, negative error code on failure *) function avcodec_encode_audio2(avctx: PAVCodecContext; avpkt: PAVPacket; frame: {const} PAVFrame; got_packet_ptr: Pcint): cint; cdecl; external av__codec; {$IFDEF FF_API_OLD_ENCODE_AUDIO} (** * @deprecated use avcodec_encode_video2() instead. * * Encode a video frame from pict into buf. * The input picture should be * stored using a specific format, namely avctx.pix_fmt. * * @param avctx the codec context * @param[out] buf the output buffer for the bitstream of encoded frame * @param[in] buf_size the size of the output buffer in bytes * @param[in] pict the input picture to encode * @return On error a negative value is returned, on success zero or the number * of bytes used from the output buffer. *) function avcodec_encode_video(avctx: PAVCodecContext; buf: PByte; buf_size: cint; pict: {const} PAVFrame): cint; cdecl; external av__codec; deprecated; {$IFEND} (** * Encode a frame of video. * * Takes input raw video data from frame and writes the next output packet, if * available, to avpkt. The output packet does not necessarily contain data for * the most recent frame, as encoders can delay and reorder input frames * internally as needed. * * @param avctx codec context * @param avpkt output AVPacket. * The user can supply an output buffer by setting * avpkt->data and avpkt->size prior to calling the * function, but if the size of the user-provided data is not * large enough, encoding will fail. All other AVPacket fields * will be reset by the encoder using av_init_packet(). If * avpkt->data is NULL, the encoder will allocate it. * The encoder will set avpkt->size to the size of the * output packet. The returned data (if any) belongs to the * caller, he is responsible for freeing it. * * If this function fails or produces no output, avpkt will be * freed using av_free_packet() (i.e. avpkt->destruct will be * called to free the user supplied buffer). * @param[in] frame AVFrame containing the raw video data to be encoded. * May be NULL when flushing an encoder that has the * CODEC_CAP_DELAY capability set. * @param[out] got_packet_ptr This field is set to 1 by libavcodec if the * output packet is non-empty, and to 0 if it is * empty. If the function returns an error, the * packet can be assumed to be invalid, and the * value of got_packet_ptr is undefined and should * not be used. * @return 0 on success, negative error code on failure *) function avcodec_encode_video2(avctx: PAVCodecContext; avpkt: PAVPacket; frame: {const} PAVFrame; got_packet_ptr: Pcint): cint; cdecl; external av__codec; function avcodec_encode_subtitle(avctx: PAVCodecContext; buf: PByteArray; buf_size: cint; sub: {const} PAVSubtitle): cint; cdecl; external av__codec; {$IFDEF FF_API_AVCODEC_RESAMPLE} (** * @defgroup lavc_resample Audio resampling * @ingroup libavc * @deprecated use libswresample instead * * @ *) type PReSampleContext = pointer; PAVResampleContext = pointer; PImgReSampleContext = pointer; (** * Initialize audio resampling context. * * @param output_channels number of output channels * @param input_channels number of input channels * @param output_rate output sample rate * @param input_rate input sample rate * @param sample_fmt_out requested output sample format * @param sample_fmt_in input sample format * @param filter_length length of each FIR filter in the filterbank relative to the cutoff frequency * @param log2_phase_count log2 of the number of entries in the polyphase filterbank * @param linear if 1 then the used FIR filter will be linearly interpolated between the 2 closest, if 0 the closest will be used * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate * @return allocated ReSampleContext, NULL if error occurred *) function av_audio_resample_init(output_channels: cint; input_channels: cint; output_rate: cint; input_rate: cint; sample_fmt_out: TAVSampleFormat; sample_fmt_in: TAVSampleFormat; filter_length: cint; log2_phase_count: cint; linear: cint; cutoff: cdouble): PReSampleContext; cdecl; external av__codec; deprecated; function audio_resample (s: PReSampleContext; output: PSmallint; input: PSmallint; nb_samples: cint): cint; cdecl; external av__codec; deprecated; (** * Free resample context. * * @param s a non-NULL pointer to a resample context previously * created with av_audio_resample_init() *) procedure audio_resample_close (s: PReSampleContext); cdecl; external av__codec; deprecated; (** * 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; deprecated; (** * 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; deprecated; (** * 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; deprecated; procedure av_resample_close (c: PAVResampleContext); cdecl; external av__codec; deprecated; {$ENDIF} (** * @addtogroup lavc_picture * @ *) (** * Allocate memory for a picture. Call avpicture_free to free it. * * @see avpicture_fill() * * @param picture the picture to be filled in. * @param pix_fmt the format of the picture. * @param width the width of the picture. * @param height the height of the picture. * @return Zero if successful, a negative value if not. *) function avpicture_alloc (picture: PAVPicture; pix_fmt: TAVPixelFormat; width: cint; height: cint): cint; cdecl; external av__codec; (** * Free a picture previously allocated by avpicture_alloc(). * * @param picture the AVPicture to be freed *) procedure avpicture_free (picture: PAVPicture); cdecl; external av__codec; (** * Fill in the AVPicture fields, always assume a linesize alignment of * 1. * * @see av_image_fill_arrays() *) function avpicture_fill (picture: PAVPicture; ptr: pcuint8; pix_fmt: TAVPixelFormat; width: cint; height: cint): cint; cdecl; external av__codec; (** * Copy pixel data from an AVPicture into a buffer, always assume a * linesize alignment of 1. * * @see av_image_copy_to_buffer() *) function avpicture_layout (src: {const} PAVPicture; pix_fmt: TAVPixelFormat; width: cint; height: cint; dest: PByteArray; dest_size: cint): cint; cdecl; external av__codec; (** * Calculate the size in bytes that a picture of the given width and height * would occupy if stored in the given picture format. * Always assume a linesize alignment of 1. * * @see av_image_get_buffer_size(). *) function avpicture_get_size (pix_fmt: TAVPixelFormat; width: cint; height: cint): cint; cdecl; external av__codec; {$IFDEF FF_API_DEINTERLACE} (** * deinterlace - if not supported return -1 *) * * @deprecated - use yadif (in libavfilter) instead *) function avpicture_deinterlace (dst: PAVPicture; src: {const} PAVPicture; pix_fmt: TAVPixelFormat; width: cint; height: cint): cint; cdecl; external av__codec; deprecated; {$ENDIF} (** * Copy image src to dst. Wraps av_image_copy(). *) procedure av_picture_copy(dst: PAVPicture; src: {const} PAVPicture; pix_fmt: TAVPixelFormat; width: cint; height: cint); cdecl; external av__codec; (** * Crop image top and left side. *) function av_picture_crop(dst: PAVPicture; src: {const} PAVPicture; pix_fmt: TAVPixelFormat; top_band: cint; left_band: cint): cint; cdecl; external av__codec; (** * Pad image. *) function av_picture_pad(dst: PAVPicture; src: {const} PAVPicture; height: cint; width: cint; pix_fmt: TAVPixelFormat; padtop: cint; padbottom: cint; padleft: cint; padright: cint; color: PCint): cint; cdecl; external av__codec; (** * @defgroup lavc_misc Utility functions * @ingroup libavc * * Miscellaneous utility functions related to both encoding and decoding * (or neither). * @ *) (** * @defgroup lavc_misc_pixfmt Pixel formats * * Functions for working with pixel formats. * @ *) (** * Utility function to access log2_chroma_w log2_chroma_h from * the pixel format AVPixFmtDescriptor. * * This function asserts that pix_fmt is valid. See av_pix_fmt_get_chroma_sub_sample * for one that returns a failure code and continues in case of invalid * pix_fmts. * * @param[in] pix_fmt the pixel format * @param[out] h_shift store log2_chroma_h * @param[out] v_shift store log2_chroma_w * * @see av_pix_fmt_get_chroma_sub_sample *) procedure avcodec_get_chroma_sub_sample (pix_fmt: TAVPixelFormat; var h_shift: cint; var v_shift: cint); cdecl; external av__codec; (** * 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; 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 = $0020; (**< loss of chroma (e.g. RGB to gray conversion) *) (** * Compute what kind of losses will occur when converting from one specific * pixel format to another. * When converting from one pixel format to another, information loss may occur. * For example, when converting from RGB24 to GRAY, the color information will * be lost. Similarly, other losses occur when converting from some formats to * other formats. These losses can involve loss of chroma, but also loss of * resolution, loss of color depth, loss due to the color space conversion, loss * of the alpha bits or loss due to color quantization. * avcodec_get_fix_fmt_loss() informs you about the various types of losses * which will occur when converting from one pixel format to another. * * @param[in] dst_pix_fmt destination pixel format * @param[in] src_pix_fmt source pixel format * @param[in] has_alpha Whether the source pixel format alpha channel is used. * @return Combination of flags informing you what kind of losses will occur * (maximum loss for an invalid dst_pix_fmt). *) function avcodec_get_pix_fmt_loss (dst_pix_fmt: TAVPixelFormat; src_pix_fmt: TAVPixelFormat; has_alpha: cint): cint; cdecl; external av__codec; {$IFDEF FF_API_FIND_BEST_PIX_FMT} (** * @deprecated use avcodec_find_best_pix_fmt_of_2() instead. * * 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. * * Note, only the first 64 pixel formats will fit in pix_fmt_mask. * * @code * src_pix_fmt = AV_PIX_FMT_YUV420P; * pix_fmt_mask = (1 << AV_PIX_FMT_YUV422P) | (1 << AV_PIX_FMT_RGB24); * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss); * @endcode * * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from * @param[in] src_pix_fmt source pixel format * @param[in] has_alpha Whether the source pixel format alpha channel is used. * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur. * @return The best pixel format to convert to or -1 if none was found. *) function avcodec_find_best_pix_fmt(pix_fmt_mask: cint64; src_pix_fmt: TAVPixelFormat; has_alpha: cint; loss_ptr: PCint): TAVPixelFormat; cdecl; external av__codec; deprecated; {$ENDIF} (** * 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_of_2() 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_list parameter. * * * @param[in] pix_fmt_list AV_PIX_FMT_NONE terminated array of pixel formats to choose from * @param[in] src_pix_fmt source pixel format * @param[in] has_alpha Whether the source pixel format alpha channel is used. * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur. * @return The best pixel format to convert to or -1 if none was found. *) function avcodec_find_best_pix_fmt_of_list(pix_fmt_list: PAVPixelFormat; src_pix_fmt: TAVPixelFormat; has_alpha: cint; loss_ptr: Pcint): TAVPixelFormat; cdecl; external av__codec; (** * Find the best pixel format to convert to given a certain source pixel * format and a selection of two destination pixel formats. 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_of_2() selects which of * the given pixel formats should be used to suffer the least amount of loss. * * If one of the destination formats is AV_PIX_FMT_NONE the other pixel format (if valid) will be * returned. * * @code * src_pix_fmt = AV_PIX_FMT_YUV420P; * dst_pix_fmt1= AV_PIX_FMT_RGB24; * dst_pix_fmt2= AV_PIX_FMT_GRAY8; * dst_pix_fmt3= AV_PIX_FMT_RGB8; * loss= FF_LOSS_CHROMA; // don't care about chroma loss, so chroma loss will be ignored. * dst_pix_fmt = avcodec_find_best_pix_fmt_of_2(dst_pix_fmt1, dst_pix_fmt2, src_pix_fmt, alpha, &loss); * dst_pix_fmt = avcodec_find_best_pix_fmt_of_2(dst_pix_fmt, dst_pix_fmt3, src_pix_fmt, alpha, &loss); * @endcode * * @param[in] dst_pix_fmt1 One of the two destination pixel formats to choose from * @param[in] dst_pix_fmt2 The other of the two destination pixel formats 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[in, out] loss_ptr Combination of loss flags. In: selects which of the losses to ignore, i.e. * NULL or value of zero means we care about all losses. Out: the loss * that occurs when converting from src to selected dst pixel format. * @return The best pixel format to convert to or -1 if none was found. *) function avcodec_find_best_pix_fmt_of_2(dst_pix_fmt1: TAVPixelFormat; dst_pix_fmt2: TAVPixelFormat; src_pix_fmt: TAVPixelFormat; has_alpha: cint; loss_ptr: Pcint): TAVPixelFormat; cdecl; external av__codec; {$IFDEF AV_HAVE_INCOMPATIBLE_FORK_ABI} function avcodec_find_best_pix_fmt2(pix_fmt_list: PAVPixelFormat; src_pix_fmt: TAVPixelFormat; has_alpha: cint; loss_ptr: Pcint): TAVPixelFormat; cdecl; external av__codec; deprecated; {$ELSE} function avcodec_find_best_pix_fmt2(dst_pix_fmt1: TAVPixelFormat; dst_pix_fmt2: TAVPixelFormat; src_pix_fmt: TAVPixelFormat; has_alpha: cint; loss_ptr: Pcint): TAVPixelFormat; cdecl; external av__codec; deprecated; {$ENDIF} function avcodec_default_get_format(s: PAVCodecContext; fmt: {const} PAVPixelFormat): TAVPixelFormat; cdecl; external av__codec; procedure avcodec_set_dimensions(s: PAVCodecContext; width: cint; height: cint); cdecl; external av__codec; (** * Put a string representing the codec tag codec_tag in buf. * * @param buf_size size in bytes of buf * @return the length of the string that would have been generated if * enough space had been available, excluding the trailing null *) function av_get_codec_tag_string(buf: PAnsiChar; buf_size: size_t; codec_tag: cuint): size_t; cdecl; external av__codec; procedure avcodec_string(buf: PAnsiChar; buf_size: cint; enc: PAVCodecContext; encode: cint); cdecl; external av__codec; (** * Return a name for the specified profile, if available. * * @param codec the codec that is searched for the given profile * @param profile the profile value for which a name is requested * @return A name for the profile if found, NULL otherwise. *) function av_get_profile_name(codec: {const} PAVCodec; profile: cint): {const} PAnsiChar; cdecl; external av__codec; function avcodec_default_execute(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint; size: cint): cint; cdecl; external av__codec; function avcodec_default_execute2(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint): cint; cdecl; external av__codec; //FIXME func typedef (** * Fill AVFrame audio data and linesize pointers. * * The buffer buf must be a preallocated buffer with a size big enough * to contain the specified samples amount. The filled AVFrame data * pointers will point to this buffer. * * AVFrame extended_data channel pointers are allocated if necessary for * planar audio. * * @param frame the AVFrame * frame->nb_samples must be set prior to calling the * function. This function fills in frame->data, * frame->extended_data, frame->linesize[0]. * @param nb_channels channel count * @param sample_fmt sample format * @param buf buffer to use for frame data * @param buf_size size of buffer * @param align plane size sample alignment * @return >=0 on success, negative error code on failure * @todo return the size in bytes required to store the samples in * case of success, at the next libavutil bump *) function avcodec_fill_audio_frame(frame: PAVFrame; nb_channels: cint; sample_fmt: TAVSampleFormat; buf: {const} PByte; buf_size: cint; align: cint): cint; 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; (** * 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: TAVCodecID): cint; cdecl; external av__codec; (** * Return the PCM codec associated with a sample format. * @param be endianness, 0 for little, 1 for big, * -1 (or anything else) for native * @return AV_CODEC_ID_PCM_* or AV_CODEC_ID_NONE *) function av_get_pcm_codec(fmt: TAVSampleFormat; be: cint): TAVCodecID; cdecl; external av__codec; (** * Return codec bits per sample. * Only return non-zero if the bits per sample is exactly correct, not an * approximation. * * @param[in] codec_id the codec * @return Number of bits per sample or zero if unknown for the given codec. *) function av_get_exact_bits_per_sample(codec_id: TAVCodecID): cint; cdecl; external av__codec; (** * Return audio frame duration. * * @param avctx codec context * @param frame_bytes size of the frame, or 0 if unknown * @return frame duration, in samples, if known. 0 if not able to * determine. *) function av_get_audio_frame_duration(avctx: PAVCodecContext; frame_bytes: cint): cint; cdecl; external av__codec; type PAVBitStreamFilterContext = ^TAVBitStreamFilterContext; PAVBitStreamFilter = ^TAVBitStreamFilter; TAVBitStreamFilterContext = record priv_data: pointer; filter: PAVBitStreamFilter; parser: PAVCodecParserContext; next: PAVBitStreamFilterContext; end; TAVBitStreamFilter = record name: PAnsiChar; priv_data_size: cint; filter: function(bsfc: PAVBitStreamFilterContext; avctx: PAVCodecContext; args: {const} PAnsiChar; poutbuf: PPointer; poutbuf_size: PCint; buf: {const} PByte; buf_size: cint; keyframe: cint): cint; cdecl; close: procedure(bsfc: PAVBitStreamFilterContext); next: PAVBitStreamFilter; end; procedure av_register_bitstream_filter(bsf: PAVBitStreamFilter); cdecl; external av__codec; function av_bitstream_filter_init(name: {const} PAnsiChar): PAVBitStreamFilterContext; cdecl; external av__codec; function av_bitstream_filter_filter(bsfc: PAVBitStreamFilterContext; avctx: PAVCodecContext; args: {const} PAnsiChar; poutbuf: PPointer; poutbuf_size: PCint; buf: {const} PByte; buf_size: cint; keyframe: cint): cint; cdecl; external av__codec; procedure av_bitstream_filter_close(bsf: PAVBitStreamFilterContext); cdecl; external av__codec; function av_bitstream_filter_next(f: PAVBitStreamFilter): PAVBitStreamFilter; cdecl; external av__codec; (* memory *) (** * Reallocate the given block if it is not large enough, otherwise do nothing. * * @see av_realloc *) procedure av_fast_realloc(ptr: pointer; size: PCuint; min_size: size_t); cdecl; external av__codec; (** * Allocate a buffer, reusing the given one if large enough. * * Contrary to av_fast_realloc the current buffer contents might not be * preserved and on error the old buffer is freed, thus no special * handling to avoid memleaks is necessary. * * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer * @param size size of the buffer *ptr points to * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and * *size 0 if an error occurred. *) procedure av_fast_malloc(ptr: pointer; size: PCuint; min_size: size_t); cdecl; external av__codec; (** * Same behaviour av_fast_malloc but the buffer has additional * FF_INPUT_BUFFER_PADDING_SIZE at the end which will will always be 0. * * In addition the whole buffer will initially and after resizes * be 0-initialized so that no uninitialized data will ever appear. *) procedure av_fast_padded_malloc(ptr: pointer; size: Pcuint; min_size: size_t); cdecl; external av__codec; (** * Same behaviour av_fast_padded_malloc except that buffer will always * be 0-initialized after call. *) procedure av_fast_padded_mallocz(ptr: pointer; size: Pcuint; min_size: size_t); cdecl; external av__codec; (** * Encode extradata length to a buffer. Used by xiph codecs. * * @param s buffer to write to; must be at least (v/255+1) bytes long * @param v size of extradata in bytes * @return number of bytes written to the buffer. *) function av_xiphlacing(s: PByte; v: cuint): cuint; cdecl; external av__codec; (** * Log a generic warning message about a missing feature. This function is * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.) * only, and would normally not be used by applications. * @param[in] avc a pointer to an arbitrary struct of which the first field is * a pointer to an AVClass struct * @param[in] feature string containing the name of the missing feature * @param[in] want_sample indicates if samples are wanted which exhibit this feature. * If want_sample is non-zero, additional verbage will be added to the log * message which tells the user how to report samples to the development * mailing list. *) procedure av_log_missing_feature(avc: Pointer; feature: {const} PAnsiChar; want_sample: cint); cdecl; external av__codec; (** * Log a generic warning message asking for a sample. This function is * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.) * only, and would normally not be used by applications. * @param[in] avc a pointer to an arbitrary struct of which the first field is * a pointer to an AVClass struct * @param[in] msg string containing an optional message, or NULL if no message *) procedure av_log_ask_for_sample(avc: Pointer; msg: {const} PAnsiChar); {todo: av_printf_format(2, 3);} cdecl; external av__codec; (** * Register the hardware accelerator hwaccel. *) procedure av_register_hwaccel (hwaccel: PAVHWAccel) cdecl; external av__codec; (** * If hwaccel is NULL, returns the first registered hardware accelerator, * if hwaccel is non-NULL, returns the next registered hardware accelerator * after hwaccel, or NULL if hwaccel is the last one. *) function av_hwaccel_next (hwaccel: PAVHWAccel): PAVHWAccel; cdecl; external av__codec; (** * Lock operation used by lockmgr *) type TAVLockOp = ( AV_LOCK_CREATE, ///< Create a mutex AV_LOCK_OBTAIN, ///< Lock the mutex AV_LOCK_RELEASE, ///< Unlock the mutex AV_LOCK_DESTROY ///< Free mutex resources ); (** * Register a user provided lock manager supporting the operations * specified by AVLockOp. mutex points to a (void) where the * lockmgr should store/get a pointer to a user allocated mutex. It's * NULL upon AV_LOCK_CREATE and != NULL for all other ops. * * @param cb User defined callback. Note: FFmpeg may invoke calls to this * callback during the call to av_lockmgr_register(). * Thus, the application must be prepared to handle that. * If cb is set to NULL the lockmgr will be unregistered. * Also note that during unregistration the previously registered * lockmgr callback may also be invoked. *) // ToDo: Implement and test this //function av_lockmgr_register(cb: function (mutex: Ppointer; op: TAVLockOp)): cint; // cdecl; external av__codec; (** * Get the type of the given codec. *) function avcodec_get_type(codec_id: TAVCodecID): TAVMediaType; cdecl; external av__codec; (** * Get the name of a codec. * @return a static string identifying the codec; never NULL *) function avcodec_get_name(id: TAVCodecID): PAnsiChar; cdecl; external av__codec; (** * @return a positive value if s is open (i.e. avcodec_open2() was called on it * with no corresponding avcodec_close()), 0 otherwise. *) function avcodec_is_open(s: PAVCodecContext): cint; cdecl; external av__codec; (** * @return a non-zero number if codec is an encoder, zero otherwise *) function av_codec_is_encoder(codec: {const} PAVCodec): cint; cdecl; external av__codec; (** * @return a non-zero number if codec is a decoder, zero otherwise *) function av_codec_is_decoder(codec: {const} PAVCodec): cint; cdecl; external av__codec; (** * @return descriptor for given codec ID or NULL if no descriptor exists. *) function avcodec_descriptor_get(id: TAVCodecID): PAVCodecDescriptor; cdecl; external av__codec; (** * Iterate over all codec descriptors known to libavcodec. * * @param prev previous descriptor. NULL to get the first descriptor. * * @return next descriptor or NULL after the last descriptor *) function avcodec_descriptor_next(prev: {const} PAVCodecDescriptor): PAVCodecDescriptor; cdecl; external av__codec; (** * @return codec descriptor with the given name or NULL if no such descriptor * exists. *) function avcodec_descriptor_get_by_name(name: {const} PAnsiChar): PAVCodecDescriptor; cdecl; external av__codec; implementation end.