(* * copyright (c) 2001 Fabrice Bellard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA *) (* * This is a part of Pascal porting of ffmpeg. * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows. * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT * in the source codes. * - Changes and updates by the UltraStar Deluxe Team *) (* * Conversion of libavcodec/avcodec.h * Min. version: 51.16.0, revision 6577, Sat Oct 7 15:30:46 2006 UTC * Max. version: 52.11.0, revision 16912, Sun Feb 1 02:00:19 2009 UTC * * update to * Max. version: 52.54.0, Sun Feb 21 2010 00:25:00 CET * MiSchi *) unit avcodec; {$IFDEF FPC} {$MODE DELPHI } {$PACKENUM 4} (* use 4-byte enums *) {$PACKRECORDS C} (* C/C++-compatible record packing *) {$ELSE} {$MINENUMSIZE 4} (* use 4-byte enums *) {$ENDIF} {$IFDEF DARWIN} {$linklib libavcodec} {$ENDIF} interface uses ctypes, avutil, rational, opt, SysUtils, {$IFDEF UNIX} BaseUnix, {$ENDIF} UConfig; const (* Max. supported version by this header *) LIBAVCODEC_MAX_VERSION_MAJOR = 52; LIBAVCODEC_MAX_VERSION_MINOR = 54; LIBAVCODEC_MAX_VERSION_RELEASE = 0; LIBAVCODEC_MAX_VERSION = (LIBAVCODEC_MAX_VERSION_MAJOR * VERSION_MAJOR) + (LIBAVCODEC_MAX_VERSION_MINOR * VERSION_MINOR) + (LIBAVCODEC_MAX_VERSION_RELEASE * VERSION_RELEASE); (* Min. supported version by this header *) LIBAVCODEC_MIN_VERSION_MAJOR = 51; LIBAVCODEC_MIN_VERSION_MINOR = 16; LIBAVCODEC_MIN_VERSION_RELEASE = 0; LIBAVCODEC_MIN_VERSION = (LIBAVCODEC_MIN_VERSION_MAJOR * VERSION_MAJOR) + (LIBAVCODEC_MIN_VERSION_MINOR * VERSION_MINOR) + (LIBAVCODEC_MIN_VERSION_RELEASE * VERSION_RELEASE); (* Check if linked versions are supported *) {$IF (LIBAVCODEC_VERSION < LIBAVCODEC_MIN_VERSION)} {$MESSAGE Error 'Linked version of libavcodec is too old!'} {$IFEND} (* Check if linked version is supported *) {$IF (LIBAVCODEC_VERSION > LIBAVCODEC_MAX_VERSION)} {$MESSAGE Error 'Linked version of libavcodec is not yet supported!'} {$IFEND} const AV_NOPTS_VALUE: cint64 = $8000000000000000; AV_TIME_BASE = 1000000; AV_TIME_BASE_Q: TAVRational = (num: 1; den: AV_TIME_BASE); (** * Identifies the syntax and semantics of the bitstream. * The principle is roughly: * Two decoders with the same ID can decode the same streams. * Two encoders with the same ID can encode compatible streams. * There may be slight deviations from the principle due to implementation * details. * * If you add a codec ID to this list, add it so that * 1. no value of a existing codec ID changes (that would break ABI), * 2. it is as close as possible to similar codecs. *) type TCodecID = ( CODEC_ID_NONE, (* video codecs *) CODEC_ID_MPEG1VIDEO, CODEC_ID_MPEG2VIDEO, //* prefered ID for MPEG Video 1/2 decoding */ CODEC_ID_MPEG2VIDEO_XVMC, CODEC_ID_H261, CODEC_ID_H263, CODEC_ID_RV10, CODEC_ID_RV20, CODEC_ID_MJPEG, CODEC_ID_MJPEGB, CODEC_ID_LJPEG, CODEC_ID_SP5X, CODEC_ID_JPEGLS, CODEC_ID_MPEG4, CODEC_ID_RAWVIDEO, CODEC_ID_MSMPEG4V1, CODEC_ID_MSMPEG4V2, CODEC_ID_MSMPEG4V3, CODEC_ID_WMV1, CODEC_ID_WMV2, CODEC_ID_H263P, CODEC_ID_H263I, CODEC_ID_FLV1, CODEC_ID_SVQ1, CODEC_ID_SVQ3, CODEC_ID_DVVIDEO, CODEC_ID_HUFFYUV, CODEC_ID_CYUV, CODEC_ID_H264, CODEC_ID_INDEO3, CODEC_ID_VP3, CODEC_ID_THEORA, CODEC_ID_ASV1, CODEC_ID_ASV2, CODEC_ID_FFV1, CODEC_ID_4XM, CODEC_ID_VCR1, CODEC_ID_CLJR, CODEC_ID_MDEC, CODEC_ID_ROQ, CODEC_ID_INTERPLAY_VIDEO, CODEC_ID_XAN_WC3, CODEC_ID_XAN_WC4, CODEC_ID_RPZA, CODEC_ID_CINEPAK, CODEC_ID_WS_VQA, CODEC_ID_MSRLE, CODEC_ID_MSVIDEO1, CODEC_ID_IDCIN, CODEC_ID_8BPS, CODEC_ID_SMC, CODEC_ID_FLIC, CODEC_ID_TRUEMOTION1, CODEC_ID_VMDVIDEO, CODEC_ID_MSZH, CODEC_ID_ZLIB, CODEC_ID_QTRLE, CODEC_ID_SNOW, CODEC_ID_TSCC, CODEC_ID_ULTI, CODEC_ID_QDRAW, CODEC_ID_VIXL, CODEC_ID_QPEG, CODEC_ID_XVID, CODEC_ID_PNG, CODEC_ID_PPM, CODEC_ID_PBM, CODEC_ID_PGM, CODEC_ID_PGMYUV, CODEC_ID_PAM, CODEC_ID_FFVHUFF, CODEC_ID_RV30, CODEC_ID_RV40, CODEC_ID_VC1, CODEC_ID_WMV3, CODEC_ID_LOCO, CODEC_ID_WNV1, CODEC_ID_AASC, CODEC_ID_INDEO2, CODEC_ID_FRAPS, CODEC_ID_TRUEMOTION2, CODEC_ID_BMP, CODEC_ID_CSCD, CODEC_ID_MMVIDEO, CODEC_ID_ZMBV, CODEC_ID_AVS, CODEC_ID_SMACKVIDEO, CODEC_ID_NUV, CODEC_ID_KMVC, CODEC_ID_FLASHSV, CODEC_ID_CAVS, CODEC_ID_JPEG2000, CODEC_ID_VMNC, CODEC_ID_VP5, CODEC_ID_VP6, CODEC_ID_VP6F, CODEC_ID_TARGA, CODEC_ID_DSICINVIDEO, CODEC_ID_TIERTEXSEQVIDEO, CODEC_ID_TIFF, CODEC_ID_GIF, CODEC_ID_FFH264, CODEC_ID_DXA, CODEC_ID_DNXHD, CODEC_ID_THP, CODEC_ID_SGI, CODEC_ID_C93, CODEC_ID_BETHSOFTVID, CODEC_ID_PTX, CODEC_ID_TXD, CODEC_ID_VP6A, CODEC_ID_AMV, CODEC_ID_VB, CODEC_ID_PCX, CODEC_ID_SUNRAST, CODEC_ID_INDEO4, CODEC_ID_INDEO5, CODEC_ID_MIMIC, CODEC_ID_RL2, CODEC_ID_8SVX_EXP, CODEC_ID_8SVX_FIB, CODEC_ID_ESCAPE124, CODEC_ID_DIRAC, CODEC_ID_BFI, CODEC_ID_CMV, CODEC_ID_MOTIONPIXELS, CODEC_ID_TGV, CODEC_ID_TGQ, {$IF LIBAVCODEC_VERSION >= 52012000} // >= 52.12.0 CODEC_ID_TQI, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52022002} // >= 52.22.2 CODEC_ID_AURA, CODEC_ID_AURA2, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52027000} // >= 52.27.0 CODEC_ID_V210X, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52028000} // >= 52.28.0 CODEC_ID_TMV, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52029000} // >= 52.29.0 CODEC_ID_V210, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52030002} // >= 52.30.2 CODEC_ID_DPX, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52031002} // >= 52.31.2 CODEC_ID_MAD, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52037000} // >= 52.37.0 CODEC_ID_FRWU, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52041000} // >= 52.41.0 CODEC_ID_FLASHSV2, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52043000} // >= 52.43.0 CODEC_ID_CDGRAPHICS, CODEC_ID_R210, {$IFEND} CODEC_ID_ANM, {$IF LIBAVCODEC_VERSION >= 52049000} // >= 52.49.0 CODEC_ID_BINKVIDEO, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52052000} // >= 52.52.0 CODEC_ID_IFF_ILBM, CODEC_ID_IFF_BYTERUN1, {$IFEND} //* various PCM "codecs" */ CODEC_ID_PCM_S16LE= $10000, CODEC_ID_PCM_S16BE, CODEC_ID_PCM_U16LE, CODEC_ID_PCM_U16BE, CODEC_ID_PCM_S8, CODEC_ID_PCM_U8, CODEC_ID_PCM_MULAW, CODEC_ID_PCM_ALAW, CODEC_ID_PCM_S32LE, CODEC_ID_PCM_S32BE, CODEC_ID_PCM_U32LE, CODEC_ID_PCM_U32BE, CODEC_ID_PCM_S24LE, CODEC_ID_PCM_S24BE, CODEC_ID_PCM_U24LE, CODEC_ID_PCM_U24BE, CODEC_ID_PCM_S24DAUD, CODEC_ID_PCM_ZORK, CODEC_ID_PCM_S16LE_PLANAR, CODEC_ID_PCM_DVD, CODEC_ID_PCM_F32BE, CODEC_ID_PCM_F32LE, CODEC_ID_PCM_F64BE, CODEC_ID_PCM_F64LE, {$IF LIBAVCODEC_VERSION >= 52034000} // >= 52.34.0 CODEC_ID_PCM_BLURAY, {$IFEND} //* various ADPCM codecs */ CODEC_ID_ADPCM_IMA_QT= $11000, CODEC_ID_ADPCM_IMA_WAV, CODEC_ID_ADPCM_IMA_DK3, CODEC_ID_ADPCM_IMA_DK4, CODEC_ID_ADPCM_IMA_WS, CODEC_ID_ADPCM_IMA_SMJPEG, CODEC_ID_ADPCM_MS, CODEC_ID_ADPCM_4XM, CODEC_ID_ADPCM_XA, CODEC_ID_ADPCM_ADX, CODEC_ID_ADPCM_EA, CODEC_ID_ADPCM_G726, CODEC_ID_ADPCM_CT, CODEC_ID_ADPCM_SWF, CODEC_ID_ADPCM_YAMAHA, CODEC_ID_ADPCM_SBPRO_4, CODEC_ID_ADPCM_SBPRO_3, CODEC_ID_ADPCM_SBPRO_2, CODEC_ID_ADPCM_THP, CODEC_ID_ADPCM_IMA_AMV, CODEC_ID_ADPCM_EA_R1, CODEC_ID_ADPCM_EA_R3, CODEC_ID_ADPCM_EA_R2, CODEC_ID_ADPCM_IMA_EA_SEAD, CODEC_ID_ADPCM_IMA_EA_EACS, CODEC_ID_ADPCM_EA_XAS, CODEC_ID_ADPCM_EA_MAXIS_XA, CODEC_ID_ADPCM_IMA_ISS, //* AMR */ CODEC_ID_AMR_NB= $12000, CODEC_ID_AMR_WB, //* RealAudio codecs*/ CODEC_ID_RA_144= $13000, CODEC_ID_RA_288, //* various DPCM codecs */ CODEC_ID_ROQ_DPCM= $14000, CODEC_ID_INTERPLAY_DPCM, CODEC_ID_XAN_DPCM, CODEC_ID_SOL_DPCM, (* audio codecs *) CODEC_ID_MP2= $15000, CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3 CODEC_ID_AAC, {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0 _CODEC_ID_MPEG4AAC, // will be redefined to CODEC_ID_AAC below {$IFEND} CODEC_ID_AC3, CODEC_ID_DTS, CODEC_ID_VORBIS, CODEC_ID_DVAUDIO, CODEC_ID_WMAV1, CODEC_ID_WMAV2, CODEC_ID_MACE3, CODEC_ID_MACE6, CODEC_ID_VMDAUDIO, CODEC_ID_SONIC, CODEC_ID_SONIC_LS, CODEC_ID_FLAC, CODEC_ID_MP3ADU, CODEC_ID_MP3ON4, CODEC_ID_SHORTEN, CODEC_ID_ALAC, CODEC_ID_WESTWOOD_SND1, CODEC_ID_GSM, ///< as in Berlin toast format CODEC_ID_QDM2, CODEC_ID_COOK, CODEC_ID_TRUESPEECH, CODEC_ID_TTA, CODEC_ID_SMACKAUDIO, CODEC_ID_QCELP, CODEC_ID_WAVPACK, CODEC_ID_DSICINAUDIO, CODEC_ID_IMC, CODEC_ID_MUSEPACK7, CODEC_ID_MLP, CODEC_ID_GSM_MS, { as found in WAV } CODEC_ID_ATRAC3, CODEC_ID_VOXWARE, CODEC_ID_APE, CODEC_ID_NELLYMOSER, CODEC_ID_MUSEPACK8, CODEC_ID_SPEEX, CODEC_ID_WMAVOICE, CODEC_ID_WMAPRO, CODEC_ID_WMALOSSLESS, CODEC_ID_ATRAC3P, CODEC_ID_EAC3, CODEC_ID_SIPR, CODEC_ID_MP1, {$IF LIBAVCODEC_VERSION >= 52020000} // >= 52.20.0 CODEC_ID_TWINVQ, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52022000} // >= 52.22.0 CODEC_ID_TRUEHD, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52026000} // >= 52.26.0 CODEC_ID_MP4ALS, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52035000} // >= 52.35.0 CODEC_ID_ATRAC1, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52049000} // >= 52.49.0 CODEC_ID_BINKAUDIO_RDFT, CODEC_ID_BINKAUDIO_DCT, {$IFEND} //* subtitle codecs */ CODEC_ID_DVD_SUBTITLE= $17000, CODEC_ID_DVB_SUBTITLE, CODEC_ID_TEXT, ///< raw UTF-8 text CODEC_ID_XSUB, CODEC_ID_SSA, CODEC_ID_MOV_TEXT, {$IF LIBAVCODEC_VERSION >= 52033000} // >= 52.33.0 CODEC_ID_HDMV_PGS_SUBTITLE, {$IFEND} {$IF LIBAVCODEC_VERSION >= 52037001} // >= 52.37.1 CODEC_ID_DVB_TELETEXT, {$IFEND} (* other specific kind of codecs (generally used for attachments) *) CODEC_ID_TTF= $18000, CODEC_ID_PROBE= $19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it CODEC_ID_MPEG2TS= $20000, {*< _FAKE_ codec to indicate a raw MPEG-2 TS * stream (only used by libavformat) *} __CODEC_ID_4BYTE = $FFFFF // ensure 4-byte enum ); {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0 {* CODEC_ID_MP3LAME is obsolete *} const CODEC_ID_MP3LAME = CODEC_ID_MP3; CODEC_ID_MPEG4AAC = CODEC_ID_AAC; {$IFEND} type TCodecType = ( CODEC_TYPE_UNKNOWN = -1, CODEC_TYPE_VIDEO, CODEC_TYPE_AUDIO, CODEC_TYPE_DATA, CODEC_TYPE_SUBTITLE, CODEC_TYPE_ATTACHMENT, CODEC_TYPE_NB ); {** * all in native endian *} type TSampleFormat = ( SAMPLE_FMT_NONE = -1, SAMPLE_FMT_U8, ///< unsigned 8 bits SAMPLE_FMT_S16, ///< signed 16 bits SAMPLE_FMT_S32, ///< signed 32 bits SAMPLE_FMT_FLT, ///< float SAMPLE_FMT_DBL, ///< double SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if dynamically linking to libavcodec ); _TSampleFormatArray = array [0 .. MaxInt div SizeOf(TSampleFormat)-1] of TSampleFormat; PSampleFormatArray = ^_TSampleFormatArray; const {* Audio channel masks *} CH_FRONT_LEFT = $00000001; CH_FRONT_RIGHT = $00000002; CH_FRONT_CENTER = $00000004; CH_LOW_FREQUENCY = $00000008; CH_BACK_LEFT = $00000010; CH_BACK_RIGHT = $00000020; CH_FRONT_LEFT_OF_CENTER = $00000040; CH_FRONT_RIGHT_OF_CENTER = $00000080; CH_BACK_CENTER = $00000100; CH_SIDE_LEFT = $00000200; CH_SIDE_RIGHT = $00000400; CH_TOP_CENTER = $00000800; CH_TOP_FRONT_LEFT = $00001000; CH_TOP_FRONT_CENTER = $00002000; CH_TOP_FRONT_RIGHT = $00004000; CH_TOP_BACK_LEFT = $00008000; CH_TOP_BACK_CENTER = $00010000; CH_TOP_BACK_RIGHT = $00020000; CH_STEREO_LEFT = $20000000; ///< Stereo downmix. CH_STEREO_RIGHT = $40000000; ///< See CH_STEREO_LEFT. {** Channel mask value used for AVCodecContext.request_channel_layout * to indicate that the user requests the channel order of the decoder output * to be the native codec channel order. *} {$IF LIBAVCODEC_VERSION >= 52038001} // >= 52.38.1 CH_LAYOUT_NATIVE = $8000000000000000; {$IFEND} {* Audio channel convenience macros *} CH_LAYOUT_MONO = (CH_FRONT_CENTER); CH_LAYOUT_STEREO = (CH_FRONT_LEFT or CH_FRONT_RIGHT); CH_LAYOUT_SURROUND = (CH_LAYOUT_STEREO or CH_FRONT_CENTER); {$IF LIBAVCODEC_VERSION >= 52027000} // >= 52.27.0 CH_LAYOUT_2_1 = (CH_LAYOUT_STEREO or CH_BACK_CENTER); CH_LAYOUT_4POINT0 = (CH_LAYOUT_SURROUND or CH_BACK_CENTER); CH_LAYOUT_2_2 = (CH_LAYOUT_STEREO or CH_SIDE_LEFT or CH_SIDE_RIGHT); {$IFEND} CH_LAYOUT_QUAD = (CH_LAYOUT_STEREO or CH_BACK_LEFT or CH_BACK_RIGHT); CH_LAYOUT_5POINT0 = (CH_LAYOUT_SURROUND or CH_SIDE_LEFT or CH_SIDE_RIGHT); CH_LAYOUT_5POINT1 = (CH_LAYOUT_5POINT0 or CH_LOW_FREQUENCY); {$IF LIBAVCODEC_VERSION >= 52025000} // >= 52.25.0 CH_LAYOUT_5POINT0_BACK = (CH_LAYOUT_SURROUND or CH_BACK_LEFT or CH_BACK_RIGHT); CH_LAYOUT_5POINT1_BACK = (CH_LAYOUT_5POINT0_BACK or CH_LOW_FREQUENCY); {$IFEND} {$IF LIBAVCODEC_VERSION >= 52034000} // >= 52.34.0 CH_LAYOUT_7POINT0 = (CH_LAYOUT_5POINT0 or CH_BACK_LEFT or CH_BACK_RIGHT); {$IFEND} CH_LAYOUT_7POINT1 = (CH_LAYOUT_5POINT1 or CH_BACK_LEFT or CH_BACK_RIGHT); {$IF LIBAVCODEC_VERSION < 52025000} // < 52.25.0 CH_LAYOUT_7POINT1_WIDE = (CH_LAYOUT_SURROUND or CH_LOW_FREQUENCY or CH_BACK_LEFT or CH_BACK_RIGHT or {$ELSE} CH_LAYOUT_7POINT1_WIDE = (CH_LAYOUT_5POINT1_BACK or {$IFEND} CH_FRONT_LEFT_OF_CENTER or CH_FRONT_RIGHT_OF_CENTER); CH_LAYOUT_STEREO_DOWNMIX = (CH_STEREO_LEFT or CH_STEREO_RIGHT); {* in bytes *} AVCODEC_MAX_AUDIO_FRAME_SIZE = 192000; // 1 second of 48khz 32bit audio {** * Required number of additionally allocated bytes at the end of the input bitstream for decoding. * This is mainly needed because some optimized bitstream readers read * 32 or 64 bit at once and could read over the end.
* Note: If the first 23 bits of the additional bytes are not 0, then damaged * MPEG bitstreams could cause overread and segfault. *} FF_INPUT_BUFFER_PADDING_SIZE = 8; {** * minimum encoding buffer size. * Used to avoid some checks during header writing. *} FF_MIN_BUFFER_SIZE = 16384; type {* * motion estimation type. *} TMotion_Est_ID = ( ME_ZERO = 1, ///< no search, that is use 0,0 vector whenever one is needed ME_FULL, ME_LOG, ME_PHODS, ME_EPZS, ///< enhanced predictive zonal search ME_X1, ///< reserved for experiments ME_HEX, ///< hexagon based search ME_UMH, ///< uneven multi-hexagon search ME_ITER, ///< iterative search ME_TESA ///< transformed exhaustive search algorithm ); TAVDiscard = ( {* We leave some space between them for extensions (drop some * keyframes for intra-only or drop just some bidir frames). *} AVDISCARD_NONE = -16, ///< discard nothing AVDISCARD_DEFAULT = 0, ///< discard useless packets like 0 size packets in avi AVDISCARD_NONREF = 8, ///< discard all non reference AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes AVDISCARD_ALL = 48 ///< discard all ); {$IF LIBAVCODEC_VERSION >= 52028000} // >= 52.28.0 TAVColorPrimaries = ( AVCOL_PRI_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B AVCOL_PRI_UNSPECIFIED = 2, AVCOL_PRI_BT470M = 4, AVCOL_PRI_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM AVCOL_PRI_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC AVCOL_PRI_SMPTE240M = 7, ///< functionally identical to above AVCOL_PRI_FILM = 8, AVCOL_PRI_NB ///< Not part of ABI ); TAVColorTransferCharacteristic = ( AVCOL_TRC_BT709 = 1, ///< also ITU-R BT1361 AVCOL_TRC_UNSPECIFIED = 2, AVCOL_TRC_GAMMA22 = 4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM AVCOL_TRC_GAMMA28 = 5, ///< also ITU-R BT470BG AVCOL_TRC_NB ///< Not part of ABI ); TAVColorSpace = ( AVCOL_SPC_RGB = 0, AVCOL_SPC_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B AVCOL_SPC_UNSPECIFIED = 2, AVCOL_SPC_FCC = 4, AVCOL_SPC_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601 AVCOL_SPC_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above AVCOL_SPC_SMPTE240M = 7, AVCOL_SPC_NB ///< Not part of ABI ); TAVColorRange = ( AVCOL_RANGE_UNSPECIFIED = 0, AVCOL_RANGE_MPEG = 1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges AVCOL_RANGE_JPEG = 2, ///< the normal 2^n-1 "JPEG" YUV ranges AVCOL_RANGE_NB ///< Not part of ABI ); (** * X X 3 4 X X are luma samples, * 1 2 1-6 are possible chroma positions * X X 5 6 X 0 is undefined/unknown position *) TAVChromaLocation = ( AVCHROMA_LOC_UNSPECIFIED = 0, AVCHROMA_LOC_LEFT = 1, ///< mpeg2/4, h264 default AVCHROMA_LOC_CENTER = 2, ///< mpeg1, jpeg, h263 AVCHROMA_LOC_TOPLEFT = 3, ///< DV AVCHROMA_LOC_TOP = 4, AVCHROMA_LOC_BOTTOMLEFT = 5, AVCHROMA_LOC_BOTTOM = 6, AVCHROMA_LOC_NB ///< Not part of ABI ); {$IFEND} PRcOverride = ^TRcOverride; TRcOverride = record {16} start_frame: cint; end_frame: cint; qscale: cint; // if this is 0 then quality_factor will be used instead quality_factor: cfloat; end; const FF_MAX_B_FRAMES = 16; {* encoding support These flags can be passed in AVCodecContext.flags before initialization. Note: Not everything is supported yet. *} CODEC_FLAG_QSCALE = $0002; ///< Use fixed qscale. CODEC_FLAG_4MV = $0004; ///< 4 MV per MB allowed / advanced prediction for H263. CODEC_FLAG_QPEL = $0010; ///< use qpel MC. CODEC_FLAG_GMC = $0020; ///< use GMC. CODEC_FLAG_MV0 = $0040; ///< always try a MB with MV=<0,0>. CODEC_FLAG_PART = $0080; ///< Use data partitioning. {** * The parent program guarantees that the input for B-frames containing * streams is not written to for at least s->max_b_frames+1 frames, if * this is not set the input will be copied. *} CODEC_FLAG_INPUT_PRESERVED = $0100; CODEC_FLAG_PASS1 = $0200; ///< use internal 2pass ratecontrol in first pass mode CODEC_FLAG_PASS2 = $0400; ///< use internal 2pass ratecontrol in second pass mode CODEC_FLAG_EXTERN_HUFF = $1000; ///< use external huffman table (for mjpeg) CODEC_FLAG_GRAY = $2000; ///< only decode/encode grayscale CODEC_FLAG_EMU_EDGE = $4000; ///< don't draw edges CODEC_FLAG_PSNR = $8000; ///< error[?] variables will be set during encoding CODEC_FLAG_TRUNCATED = $00010000; //** input bitstream might be truncated at a random location instead // of only at frame boundaries */ CODEC_FLAG_NORMALIZE_AQP = $00020000; ///< normalize adaptive quantization CODEC_FLAG_INTERLACED_DCT = $00040000; ///< use interlaced dct CODEC_FLAG_LOW_DELAY = $00080000; ///< force low delay CODEC_FLAG_ALT_SCAN = $00100000; ///< use alternate scan {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0 CODEC_FLAG_TRELLIS_QUANT = $00200000; ///< use trellis quantization {$IFEND} CODEC_FLAG_GLOBAL_HEADER = $00400000; ///< place global headers in extradata instead of every keyframe CODEC_FLAG_BITEXACT = $00800000; ///< use only bitexact stuff (except (i)dct) {* Fx : Flag for h263+ extra options *} {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0 CODEC_FLAG_H263P_AIC = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this) {$IFEND} CODEC_FLAG_AC_PRED = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction CODEC_FLAG_H263P_UMV = $02000000; ///< Unlimited motion vector CODEC_FLAG_CBP_RD = $04000000; ///< use rate distortion optimization for cbp CODEC_FLAG_QP_RD = $08000000; ///< use rate distortion optimization for qp selectioon CODEC_FLAG_H263P_AIV = $00000008; ///< H263 Alternative inter vlc CODEC_FLAG_OBMC = $00000001; ///< OBMC CODEC_FLAG_LOOP_FILTER = $00000800; ///< loop filter CODEC_FLAG_H263P_SLICE_STRUCT = $10000000; CODEC_FLAG_INTERLACED_ME = $20000000; ///< interlaced motion estimation CODEC_FLAG_SVCD_SCAN_OFFSET = $40000000; ///< will reserve space for SVCD scan offset user data CODEC_FLAG_CLOSED_GOP = $80000000; CODEC_FLAG2_FAST = $00000001; ///< allow non spec compliant speedup tricks CODEC_FLAG2_STRICT_GOP = $00000002; ///< strictly enforce GOP size CODEC_FLAG2_NO_OUTPUT = $00000004; ///< skip bitstream encoding CODEC_FLAG2_LOCAL_HEADER = $00000008; ///< place global headers at every keyframe instead of in extradata CODEC_FLAG2_BPYRAMID = $00000010; ///< H.264 allow b-frames to be used as references CODEC_FLAG2_WPRED = $00000020; ///< H.264 weighted biprediction for b-frames CODEC_FLAG2_MIXED_REFS = $00000040; ///< H.264 multiple references per partition CODEC_FLAG2_8X8DCT = $00000080; ///< H.264 high profile 8x8 transform CODEC_FLAG2_FASTPSKIP = $00000100; ///< H.264 fast pskip CODEC_FLAG2_AUD = $00000200; ///< H.264 access unit delimiters CODEC_FLAG2_BRDO = $00000400; ///< b-frame rate-distortion optimization CODEC_FLAG2_INTRA_VLC = $00000800; ///< use MPEG-2 intra VLC table CODEC_FLAG2_MEMC_ONLY = $00001000; ///< only do ME/MC (I frames -> ref, P frame -> ME+MC) CODEC_FLAG2_DROP_FRAME_TIMECODE = $00002000; ///< timecode is in drop frame format. CODEC_FLAG2_SKIP_RD = $00004000; ///< RD optimal MB level residual skipping CODEC_FLAG2_CHUNKS = $00008000; ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries. CODEC_FLAG2_NON_LINEAR_QUANT = $00010000; ///< Use MPEG-2 nonlinear quantizer. CODEC_FLAG2_BIT_RESERVOIR = $00020000; ///< Use a bit reservoir when encoding if possible {$IF LIBAVCODEC_VERSION >= 52043000} // >= 52.43.0 CODEC_FLAG2_MBTREE = $00040000; ///< Use macroblock tree ratecontrol (x264 only) {$IFEND} (* 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. * direct rendering method 1 *) CODEC_CAP_DR1 = $0002; (* if 'parse_only' field is true, then avcodec_parse_frame() can be used *) CODEC_CAP_PARSE_ONLY = $0004; CODEC_CAP_TRUNCATED = $0008; (* codec can export data for HW decoding (XvMC) *) CODEC_CAP_HWACCEL = $0010; (** * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data. * if this is not set, the codec is guranteed to never be feeded with NULL data *) CODEC_CAP_DELAY = $0020; (** * Codec can be fed a final frame with a smaller size. * This can be used to prevent truncation of the last audio samples. *) CODEC_CAP_SMALL_LAST_FRAME = $0040; (** * Codec can export data for HW decoding (VDPAU). *) CODEC_CAP_HWACCEL_VDPAU = $0080; {$IF LIBAVCODEC_VERSION >= 52035000} // >= 52.35.0 (** * Codec can output multiple frames per AVPacket * Normally demuxers return one frame at a time, demuxers which do not do * are connected to a parser to split what they return into proper frames. * This flag is reserved to the very rare category of codecs which have a * bitstream that cannot be split into frames without timeconsuming * operations like full decoding. Demuxers carring such bitstreams thus * may return multiple frames in a packet. This has many disadvantages like * prohibiting stream copy in many cases thus it should only be considered * as a last resort. *) CODEC_CAP_SUBFRAMES = $0100; {$IFEND} //the following defines may change, don't expect compatibility if you use them MB_TYPE_INTRA4x4 = $001; MB_TYPE_INTRA16x16 = $002; //FIXME h264 specific MB_TYPE_INTRA_PCM = $004; //FIXME h264 specific MB_TYPE_16x16 = $008; MB_TYPE_16x8 = $010; MB_TYPE_8x16 = $020; MB_TYPE_8x8 = $040; MB_TYPE_INTERLACED = $080; MB_TYPE_DIRECT2 = $100; //FIXME MB_TYPE_ACPRED = $200; MB_TYPE_GMC = $400; MB_TYPE_SKIP = $800; MB_TYPE_P0L0 = $1000; MB_TYPE_P1L0 = $2000; MB_TYPE_P0L1 = $4000; MB_TYPE_P1L1 = $8000; MB_TYPE_L0 = (MB_TYPE_P0L0 or MB_TYPE_P1L0); MB_TYPE_L1 = (MB_TYPE_P0L1 or MB_TYPE_P1L1); MB_TYPE_L0L1 = (MB_TYPE_L0 or MB_TYPE_L1); MB_TYPE_QUANT = $0010000; MB_TYPE_CBP = $0020000; //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...) type (** * Pan Scan area. * This specifies the area which should be displayed. * Note there may be multiple such areas for one frame. *) PAVPanScan = ^TAVPanScan; TAVPanScan = record {24} (*** id. * - encoding: set by user. * - decoding: set by libavcodec. *) id: cint; (*** width and height in 1/16 pel * - encoding: set by user. * - decoding: set by libavcodec. *) width: cint; height: cint; (*** position of the top left corner in 1/16 pel for up to 3 fields/frames. * - encoding: set by user. * - decoding: set by libavcodec. *) position: array [0..2] of array [0..1] of smallint; end; const FF_QSCALE_TYPE_MPEG1 = 0; FF_QSCALE_TYPE_MPEG2 = 1; FF_QSCALE_TYPE_H264 = 2; {$IF LIBAVCODEC_VERSION >= 52049000} // >= 52.49.0 FF_QSCALE_TYPE_VP56 = 3; {$IFEND} FF_BUFFER_TYPE_INTERNAL = 1; FF_BUFFER_TYPE_USER = 2; ///< Direct rendering buffers (image is (de)allocated by user) FF_BUFFER_TYPE_SHARED = 4; ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared FF_BUFFER_TYPE_COPY = 8; ///< just a (modified) copy of some other buffer, don't dealloc anything. FF_I_TYPE = 1; ///< Intra FF_P_TYPE = 2; ///< Predicted FF_B_TYPE = 3; ///< Bi-dir predicted FF_S_TYPE = 4; ///< S(GMC)-VOP MPEG4 FF_SI_TYPE = 5; ///< Switching Intra FF_SP_TYPE = 6; ///< Switching Predicted FF_BI_TYPE = 7; FF_BUFFER_HINTS_VALID = $01; // Buffer hints value is meaningful (if 0 ignore) FF_BUFFER_HINTS_READABLE = $02; // Codec will read from buffer FF_BUFFER_HINTS_PRESERVE = $04; // User must not alter buffer content FF_BUFFER_HINTS_REUSABLE = $08; // Codec will reuse the buffer (update) const {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0 DEFAULT_FRAME_RATE_BASE = 1001000; {$IFEND} FF_ASPECT_EXTENDED = 15; FF_RC_STRATEGY_XVID = 1; FF_BUG_AUTODETECT = 1; ///< autodetection FF_BUG_OLD_MSMPEG4 = 2; FF_BUG_XVID_ILACE = 4; FF_BUG_UMP4 = 8; FF_BUG_NO_PADDING = 16; FF_BUG_AMV = 32; FF_BUG_AC_VLC = 0; ///< will be removed, libavcodec can now handle these non compliant files by default FF_BUG_QPEL_CHROMA = 64; FF_BUG_STD_QPEL = 128; FF_BUG_QPEL_CHROMA2 = 256; FF_BUG_DIRECT_BLOCKSIZE = 512; FF_BUG_EDGE = 1024; FF_BUG_HPEL_CHROMA = 2048; FF_BUG_DC_CLIP = 4096; FF_BUG_MS = 8192; ///< workaround various bugs in microsofts broken decoders {$IF LIBAVCODEC_VERSION >= 52054000} // >= 52.54.0 FF_BUG_TRUNCATED = 16384; {$IFEND} //FF_BUG_FAKE_SCALABILITY = 16 //Autodetection should work 100%. FF_COMPLIANCE_VERY_STRICT = 2; ///< strictly conform to a older more strict version of the spec or reference software FF_COMPLIANCE_STRICT = 1; ///< strictly conform to all the things in the spec no matter what consequences FF_COMPLIANCE_NORMAL = 0; FF_COMPLIANCE_INOFFICIAL = -1; ///< allow inofficial extensions FF_COMPLIANCE_EXPERIMENTAL = -2; ///< allow non standarized experimental things FF_ER_CAREFUL = 1; FF_ER_COMPLIANT = 2; FF_ER_AGGRESSIVE = 3; FF_ER_VERY_AGGRESSIVE = 4; FF_DCT_AUTO = 0; FF_DCT_FASTINT = 1; FF_DCT_INT = 2; FF_DCT_MMX = 3; FF_DCT_MLIB = 4; FF_DCT_ALTIVEC = 5; FF_DCT_FAAN = 6; FF_IDCT_AUTO = 0; FF_IDCT_INT = 1; FF_IDCT_SIMPLE = 2; FF_IDCT_SIMPLEMMX = 3; FF_IDCT_LIBMPEG2MMX = 4; FF_IDCT_PS2 = 5; FF_IDCT_MLIB = 6; FF_IDCT_ARM = 7; FF_IDCT_ALTIVEC = 8; FF_IDCT_SH4 = 9; FF_IDCT_SIMPLEARM = 10; FF_IDCT_H264 = 11; FF_IDCT_VP3 = 12; FF_IDCT_IPP = 13; FF_IDCT_XVIDMMX = 14; FF_IDCT_CAVS = 15; FF_IDCT_SIMPLEARMV5TE= 16; FF_IDCT_SIMPLEARMV6 = 17; FF_IDCT_SIMPLEVIS = 18; FF_IDCT_WMV2 = 19; FF_IDCT_FAAN = 20; FF_IDCT_EA = 21; FF_IDCT_SIMPLENEON = 22; FF_IDCT_SIMPLEALPHA = 23; FF_EC_GUESS_MVS = 1; FF_EC_DEBLOCK = 2; FF_MM_FORCE = $80000000; (* force usage of selected flags (OR) *) (* lower 16 bits - CPU features *) FF_MM_MMX = $0001; ///< standard MMX FF_MM_3DNOW = $0004; ///< AMD 3DNOW {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} FF_MM_MMXEXT = $0002; ///< SSE integer functions or AMD MMX ext {$IFEND} {$IF LIBAVCODEC_VERSION >= 52024000} // >= 52.24.0 FF_MM_MMX2 = $0002; ///< SSE integer functions or AMD MMX ext {$IFEND} FF_MM_SSE = $0008; ///< SSE functions FF_MM_SSE2 = $0010; ///< PIV SSE2 functions FF_MM_3DNOWEXT = $0020; ///< AMD 3DNowExt FF_MM_SSE3 = $0040; ///< Prescott SSE3 functions FF_MM_SSSE3 = $0080; ///< Conroe SSSE3 functions {$IF LIBAVCODEC_VERSION >= 52022003} // >= 52.22.3 FF_MM_SSE4 = $0100; ///< Penryn SSE4.1 functions FF_MM_SSE42 = $0200; ///< Nehalem SSE4.2 functions {$IFEND} FF_MM_IWMMXT = $0100; ///< XScale IWMMXT FF_MM_ALTIVEC = $0001; ///< standard AltiVec FF_PRED_LEFT = 0; FF_PRED_PLANE = 1; FF_PRED_MEDIAN = 2; FF_DEBUG_PICT_INFO = 1; FF_DEBUG_RC = 2; FF_DEBUG_BITSTREAM = 4; FF_DEBUG_MB_TYPE = 8; FF_DEBUG_QP = 16; FF_DEBUG_MV = 32; FF_DEBUG_DCT_COEFF = $00000040; FF_DEBUG_SKIP = $00000080; FF_DEBUG_STARTCODE = $00000100; FF_DEBUG_PTS = $00000200; FF_DEBUG_ER = $00000400; FF_DEBUG_MMCO = $00000800; FF_DEBUG_BUGS = $00001000; FF_DEBUG_VIS_QP = $00002000; FF_DEBUG_VIS_MB_TYPE = $00004000; FF_DEBUG_BUFFERS = $00008000; FF_DEBUG_VIS_MV_P_FOR = $00000001; //visualize forward predicted MVs of P frames FF_DEBUG_VIS_MV_B_FOR = $00000002; //visualize forward predicted MVs of B frames FF_DEBUG_VIS_MV_B_BACK = $00000004; //visualize backward predicted MVs of B frames FF_CMP_SAD = 0; FF_CMP_SSE = 1; FF_CMP_SATD = 2; FF_CMP_DCT = 3; FF_CMP_PSNR = 4; FF_CMP_BIT = 5; FF_CMP_RD = 6; FF_CMP_ZERO = 7; FF_CMP_VSAD = 8; FF_CMP_VSSE = 9; FF_CMP_NSSE = 10; FF_CMP_W53 = 11; FF_CMP_W97 = 12; FF_CMP_DCTMAX = 13; FF_CMP_DCT264 = 14; FF_CMP_CHROMA = 256; FF_DTG_AFD_SAME = 8; FF_DTG_AFD_4_3 = 9; FF_DTG_AFD_16_9 = 10; FF_DTG_AFD_14_9 = 11; FF_DTG_AFD_4_3_SP_14_9 = 13; FF_DTG_AFD_16_9_SP_14_9 = 14; FF_DTG_AFD_SP_4_3 = 15; FF_DEFAULT_QUANT_BIAS = 999999; FF_LAMBDA_SHIFT = 7; FF_LAMBDA_SCALE = (1 shl FF_LAMBDA_SHIFT); FF_QP2LAMBDA = 118; ///< factor to convert from H.263 QP to lambda FF_LAMBDA_MAX = (256 * 128 - 1); FF_QUALITY_SCALE = FF_LAMBDA_SCALE; //FIXME maybe remove FF_CODER_TYPE_VLC = 0; FF_CODER_TYPE_AC = 1; FF_CODER_TYPE_RAW = 2; FF_CODER_TYPE_RLE = 3; FF_CODER_TYPE_DEFLATE = 4; SLICE_FLAG_CODED_ORDER = $0001; ///< draw_horiz_band() is called in coded order instead of display SLICE_FLAG_ALLOW_FIELD = $0002; ///< allow draw_horiz_band() with field slices (MPEG2 field pics) SLICE_FLAG_ALLOW_PLANE = $0004; ///< allow draw_horiz_band() with 1 component at a time (SVQ1) FF_MB_DECISION_SIMPLE = 0; ///< uses mb_cmp FF_MB_DECISION_BITS = 1; ///< chooses the one which needs the fewest bits FF_MB_DECISION_RD = 2; ///< rate distortion FF_AA_AUTO = 0; FF_AA_FASTINT = 1; //not implemented yet FF_AA_INT = 2; FF_AA_FLOAT = 3; FF_PROFILE_UNKNOWN = -99; FF_PROFILE_AAC_MAIN = 0; FF_PROFILE_AAC_LOW = 1; FF_PROFILE_AAC_SSR = 2; FF_PROFILE_AAC_LTP = 3; FF_LEVEL_UNKNOWN = -99; X264_PART_I4X4 = $001; (* Analyse i4x4 *) X264_PART_I8X8 = $002; (* Analyse i8x8 (requires 8x8 transform) *) X264_PART_P8X8 = $010; (* Analyse p16x8, p8x16 and p8x8 *) X264_PART_P4X4 = $020; (* Analyse p8x4, p4x8, p4x4 *) X264_PART_B8X8 = $100; (* Analyse b16x8, b8x16 and b8x8 *) FF_COMPRESSION_DEFAULT = -1; {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} const AVPALETTE_SIZE = 1024; AVPALETTE_COUNT = 256; type (** * AVPaletteControl * This structure defines a method for communicating palette changes * between and demuxer and a decoder. * * @deprecated Use AVPacket to send palette changes instead. * This is totally broken. *) PAVPaletteControl = ^TAVPaletteControl; TAVPaletteControl = record (* demuxer sets this to 1 to indicate the palette has changed; * decoder resets to 0 *) palette_changed: cint; (* 4-byte ARGB palette entries, stored in native byte order; note that * the individual palette components should be on a 8-bit scale; if * the palette data comes from a IBM VGA native format, the component * data is probably 6 bits in size and needs to be scaled *) palette: array [0..AVPALETTE_COUNT - 1] of cuint; end; {deprecated;} {$IFEND} {$IF LIBAVCODEC_VERSION >= 52023000} // >= 52.23.0 type PAVPacket = ^TAVPacket; TAVPacket = record (* * Presentation timestamp in AVStream->time_base units; the time at which * the decompressed packet will be presented to the user. * Can be AV_NOPTS_VALUE if it is not stored in the file. * pts MUST be larger or equal to dts as presentation cannot happen before * decompression, unless one wants to view hex dumps. Some formats misuse * the terms dts and pts/cts to mean something different. Such timestamps * must be converted to true pts/dts before they are stored in AVPacket. *) pts: cint64; (* * Decompression timestamp in AVStream->time_base units; the time at which * the packet is decompressed. * Can be AV_NOPTS_VALUE if it is not stored in the file. *) dts: cint64; data: PByteArray; size: cint; stream_index: cint; flags: cint; (* * Duration of this packet in AVStream->time_base units, 0 if unknown. * Equals next_pts - this_pts in presentation order. *) duration: cint; destruct: procedure (para1: PAVPacket); cdecl; priv: pointer; pos: cint64; // byte position in stream, -1 if unknown (* * Time difference in AVStream->time_base units from the pts of this * packet to the point at which the output from the decoder has converged * independent from the availability of previous frames. That is, the * frames are virtually identical no matter if decoding started from * the very first frame or from this keyframe. * Is AV_NOPTS_VALUE if unknown. * This field is not the display duration of the current packet. * * The purpose of this field is to allow seeking in streams that have no * keyframes in the conventional sense. It corresponds to the * recovery point SEI in H.264 and match_time_delta in NUT. It is also * essential for some types of subtitle streams to ensure that all * subtitles are correctly displayed after seeking. *) convergence_duration: cint64; end; const {$IF LIBAVCODEC_VERSION < 52030002} // < 52.30.2 PKT_FLAG_KEY = $0001; {$ELSE} AV_PKT_FLAG_KEY = $0001; {$IF LIBAVCODEC_VERSION_MAJOR < 53} PKT_FLAG_KEY = AV_PKT_FLAG_KEY; {$IFEND} {$IFEND} {$IFEND} type PAVClass = ^TAVClass; {const} PAVCodecContext = ^TAVCodecContext; PAVCodec = ^TAVCodec; {$IF LIBAVCODEC_VERSION >= 52018000} // >= 52.18.0 PAVHWAccel = ^TAVHWAccel; {$IFEND} // int[4] PQuadIntArray = ^TQuadIntArray; TQuadIntArray = array[0..3] of cint; // int (*func)(struct AVCodecContext *c2, void *arg) TExecuteFunc = function(c2: PAVCodecContext; arg: Pointer): cint; cdecl; {$IF LIBAVCODEC_VERSION >= 52037000} // >= 52.37.0 // int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr) TExecute2Func = function(c2: PAVCodecContext; arg: Pointer; jobnr: cint; threadnr: cint): cint; cdecl; {$IFEND} TAVClass = record class_name: PAnsiChar; (* actually passing a pointer to an AVCodecContext or AVFormatContext, which begin with an AVClass. Needed because av_log is in libavcodec and has no visibility of AVIn/OutputFormat *) item_name: function(): PAnsiChar; cdecl; option: PAVOption; end; {** * Audio Video Frame. * New fields can be added to the end of FF_COMMON_FRAME with minor version * bumps. * Removal, reordering and changes to existing fields require a major * version bump. No fields should be added into AVFrame before or after * FF_COMMON_FRAME! * sizeof(AVFrame) must not be used outside libav*. *} PAVFrame = ^TAVFrame; TAVFrame = record {200} (** * pointer to the picture planes. * This might be different from the first allocated byte * - encoding: * - decoding: *) data: array [0..3] of pbyte; linesize: array [0..3] of cint; (** * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer. * This isn't used by libavcodec unless the default get/release_buffer() is used. * - encoding: * - decoding: *) base: array [0..3] of pbyte; (** * 1 -> keyframe, 0-> not * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. *) key_frame: cint; (** * Picture type of the frame, see ?_TYPE below. * - encoding: Set by libavcodec. for coded_picture (and set by user for input). * - decoding: Set by libavcodec. *) pict_type: cint; (** * presentation timestamp in time_base units (time when frame should be shown to user) * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed. * - encoding: MUST be set by user. * - decoding: Set by libavcodec. *) pts: cint64; (** * picture number in bitstream order * - encoding: set by * - decoding: Set by libavcodec. *) coded_picture_number: cint; (** * picture number in display order * - encoding: set by * - decoding: Set by libavcodec. *) display_picture_number: cint; (** * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) * - encoding: Set by libavcodec. for coded_picture (and set by user for input). * - decoding: Set by libavcodec. *) quality: cint; (** * buffer age (1->was last buffer and dint change, 2->..., ...). * Set to INT_MAX if the buffer has not been used yet. * - encoding: unused * - decoding: MUST be set by get_buffer(). *) age: cint; (** * is this picture used as reference * The values for this are the same as the MpegEncContext.picture_structure * variable, that is 1->top field, 2->bottom field, 3->frame/both fields. * Set to 4 for delayed, non-reference frames. * - encoding: unused * - decoding: Set by libavcodec. (before get_buffer() call)). *) reference: cint; (** * QP table * - encoding: unused * - decoding: Set by libavcodec. *) qscale_table: PShortint; (** * QP store stride * - encoding: unused * - decoding: Set by libavcodec. *) qstride: cint; (** * mbskip_table[mb]>=1 if MB didn't change * stride= mb_width = (width+15)>>4 * - encoding: unused * - decoding: Set by libavcodec. *) mbskip_table: pbyte; (** * motion vector table * @code * example: * int mv_sample_log2= 4 - motion_subsample_log2; * int mb_width= (width+15)>>4; * int mv_stride= (mb_width << mv_sample_log2) + 1; * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y]; * @endcode * - encoding: Set by user. * - decoding: Set by libavcodec. *) //int16_t (*motion_val[2])[2]; motion_val: array [0..1] of pointer; (** * macroblock type table * mb_type_base + mb_width + 2 * - encoding: Set by user. * - decoding: Set by libavcodec. *) mb_type: PCuint; (** * log2 of the size of the block which a single vector in motion_val represents: * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2) * - encoding: unused * - decoding: Set by libavcodec. *) motion_subsample_log2: byte; (** * for some private data of the user * - encoding: unused * - decoding: Set by user. *) opaque: pointer; (** * error * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR. * - decoding: unused *) error: array [0..3] of cuint64; (** * type of the buffer (to keep track of who has to deallocate data[*]) * - encoding: Set by the one who allocates it. * - decoding: Set by the one who allocates it. * Note: User allocated (direct rendering) & internal buffers cannot coexist currently. *) type_: cint; (** * When decoding, this signals how much the picture must be delayed. * extra_delay = repeat_pict / (2*fps) * - encoding: unused * - decoding: Set by libavcodec. *) repeat_pict: cint; (** * *) qscale_type: cint; (** * The content of the picture is interlaced. * - encoding: Set by user. * - decoding: Set by libavcodec. (default 0) *) interlaced_frame: cint; (** * If the content is interlaced, is top field displayed first. * - encoding: Set by user. * - decoding: Set by libavcodec. *) top_field_first: cint; (** * Pan scan. * - encoding: Set by user. * - decoding: Set by libavcodec. *) pan_scan: PAVPanScan; (** * Tell user application that palette has changed from previous frame. * - encoding: ??? (no palette-enabled encoder yet) * - decoding: Set by libavcodec. (default 0). *) palette_has_changed: cint; (** * codec suggestion on buffer type if != 0 * - encoding: unused * - decoding: Set by libavcodec. (before get_buffer() call)). *) buffer_hints: cint; (** * DCT coefficients * - encoding: unused * - decoding: Set by libavcodec. *) dct_coeff: PsmallInt; (** * motion referece frame index * - encoding: Set by user. * - decoding: Set by libavcodec. *) ref_index: array [0..1] of PShortint; {$IF LIBAVCODEC_VERSION >= 51068000} // >= 51.68.0 (** * reordered opaque 64bit number (generally a PTS) from AVCodecContext.reordered_opaque * output in AVFrame.reordered_opaque * - encoding: unused * - decoding: Read by user. *) reordered_opaque: cint64; {$IFEND} {$IF LIBAVCODEC_VERSION = 52021000} // = 52.21.0 (** * hardware accelerator private data (FFmpeg allocated) * - encoding: unused * - decoding: Set by libavcodec *) hwaccel_data_private: pointer; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52022000} // >= 52.22.0 hwaccel_picture_private: pointer; {$IFEND} end; (** * main external API structure. * New fields can be added to the end with minor version bumps. * Removal, reordering and changes to existing fields require a major * version bump. * sizeof(AVCodecContext) must not be used outside libav*. *) TAVCodecContext = record {720} (** * information on struct for av_log * - set by avcodec_alloc_context *) av_class: PAVClass; (** * the average bitrate * - encoding: Set by user; unused for constant quantizer encoding. * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream. *) bit_rate: cint; (** * number of bits the bitstream is allowed to diverge from the reference. * the reference can be CBR (for CBR pass1) or VBR (for pass2) * - encoding: Set by user; unused for constant quantizer encoding. * - decoding: unused *) bit_rate_tolerance: cint; (** * CODEC_FLAG_*. * - encoding: Set by user. * - decoding: Set by user. *) flags: cint; (** * Some codecs need additional format info. It is stored here. * If any muxer uses this then ALL demuxers/parsers AND encoders for the * specific codec MUST set it correctly otherwise stream copy breaks. * In general use of this field by muxers is not recommanded. * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. (FIXME: Is this OK?) *) sub_id: cint; (** * Motion estimation algorithm used for video coding. * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex), * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific] * - encoding: MUST be set by user. * - decoding: unused *) me_method: cint; (** * some codecs need / can use extradata like Huffman tables. * mjpeg: Huffman tables * rv10: additional flags * mpeg4: global headers (they can be in the bitstream or here) * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger * than extradata_size to avoid prolems if it is read with the bitstream reader. * The bytewise contents of extradata must not depend on the architecture or CPU endianness. * - encoding: Set/allocated/freed by libavcodec. * - decoding: Set/allocated/freed by user. *) extradata: pbyte; extradata_size: cint; (** * This is the fundamental unit of time (in seconds) in terms * of which frame timestamps are represented. For fixed-fps content, * timebase should be 1/framerate and timestamp increments should be * identically 1. * - encoding: MUST be set by user. * - decoding: Set by libavcodec. *) time_base: TAVRational; (* video only *) (** * picture width / height. * - encoding: MUST be set by user. * - decoding: Set by libavcodec. * Note: For compatibility it is possible to set this instead of * coded_width/height before decoding. *) width, height: cint; (** * the number of pictures in a group of pictures, or 0 for intra_only * - encoding: Set by user. * - decoding: unused *) gop_size: cint; (** * Pixel format, see PIX_FMT_xxx. * - encoding: Set by user. * - decoding: Set by libavcodec. *) pix_fmt: TAVPixelFormat; (** * Frame rate emulation. If not zero, the lower layer (i.e. format handler) * has to read frames at native frame rate. * - encoding: Set by user. * - decoding: unused *) rate_emu: cint; (** * If non NULL, 'draw_horiz_band' is called by the libavcodec * decoder to draw a horizontal band. It improves cache usage. Not * all codecs can do that. You must check the codec capabilities * beforehand. * The function is also used by hardware acceleration APIs. * It is called at least once during frame decoding to pass * the data needed for hardware render. * In that mode instead of pixel data, AVFrame points to * a structure specific to the acceleration API. The application * reads the structure and can change some fields to indicate progress * or mark state. * - encoding: unused * - decoding: Set by user. * @param height the height of the slice * @param y the y position of the slice * @param type 1->top field, 2->bottom field, 3->frame * @param offset offset into the AVFrame.data from which the slice should be read *) draw_horiz_band: procedure (s: PAVCodecContext; src: {const} PAVFrame; offset: PQuadIntArray; y: cint; type_: cint; height: cint); cdecl; (* audio only *) sample_rate: cint; ///< samples per second channels: cint; ///< number of audio channels (** * audio sample format * - encoding: Set by user. * - decoding: Set by libavcodec. *) sample_fmt: TSampleFormat; ///< sample format (* The following data should not be initialized. *) (** * Samples per packet, initialized when calling 'init'. *) frame_size: cint; frame_number: cint; ///< audio or video frame number {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} real_pict_num: cint; ///< returns the real picture number of previous encoded frame {$IFEND} (** * Number of frames the decoded output will be delayed relative to * the encoded input. * - encoding: Set by libavcodec. * - decoding: unused *) delay: cint; (* - encoding parameters *) qcompress: cfloat; ///< amount of qscale change between easy & hard scenes (0.0-1.0) qblur: cfloat; ///< amount of qscale smoothing over time (0.0-1.0) (** * minimum quantizer * - encoding: Set by user. * - decoding: unused *) qmin: cint; (** * maximum quantizer * - encoding: Set by user. * - decoding: unused *) qmax: cint; (** * maximum quantizer difference between frames * - encoding: Set by user. * - decoding: unused *) max_qdiff: cint; (** * maximum number of B-frames between non-B-frames * Note: The output will be delayed by max_b_frames+1 relative to the input. * - encoding: Set by user. * - decoding: unused *) max_b_frames: cint; (** * qscale factor between IP and B-frames * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset). * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). * - encoding: Set by user. * - decoding: unused *) b_quant_factor: cfloat; (** obsolete FIXME remove *) rc_strategy: cint; b_frame_strategy: cint; (** * hurry up amount * - encoding: unused * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header * @deprecated Deprecated in favor of skip_idct and skip_frame. *) hurry_up: cint; codec: PAVCodec; priv_data: pointer; {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 (* unused, FIXME remove*) rtp_mode: cint; {$IFEND} rtp_payload_size: cint; (* The size of the RTP payload: the coder will *) (* do it's best to deliver a chunk with size *) (* below rtp_payload_size, the chunk will start *) (* with a start code on some codecs like H.263 *) (* This doesn't take account of any particular *) (* headers inside the transmited RTP payload *) (* The RTP callback: This function is called *) (* every time the encoder has a packet to send *) (* Depends on the encoder if the data starts *) (* with a Start Code (it should) H.263 does. *) (* mb_nb contains the number of macroblocks *) (* encoded in the RTP payload *) rtp_callback: procedure (avctx: PAVCodecContext; data: pointer; size: cint; mb_nb: cint); cdecl; (* statistics, used for 2-pass encoding *) mv_bits: cint; header_bits: cint; i_tex_bits: cint; p_tex_bits: cint; i_count: cint; p_count: cint; skip_count: cint; misc_bits: cint; (** * number of bits used for the previously encoded frame * - encoding: Set by libavcodec. * - decoding: unused *) frame_bits: cint; (** * Private data of the user, can be used to carry app specific stuff. * - encoding: Set by user. * - decoding: Set by user. *) opaque: pointer; codec_name: array [0..31] of AnsiChar; codec_type: TCodecType; (* see CODEC_TYPE_xxx *) codec_id: TCodecID; (* see CODEC_ID_xxx *) (** * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). * This is used to work around some encoder bugs. * A demuxer should set this to what is stored in the field used to identify the codec. * If there are multiple such fields in a container then the demuxer should choose the one * which maximizes the information about the used codec. * If the codec tag field in a container is larger then 32 bits then the demuxer should * remap the longer ID to 32 bits with a table or other structure. Alternatively a new * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated * first. * - encoding: Set by user, if not then the default based on codec_id will be used. * - decoding: Set by user, will be converted to uppercase by libavcodec during init. *) codec_tag: cuint; (** * Work around bugs in encoders which sometimes cannot be detected automatically. * - encoding: Set by user * - decoding: Set by user *) workaround_bugs: cint; (** * luma single coefficient elimination threshold * - encoding: Set by user. * - decoding: unused *) luma_elim_threshold: cint; (** * chroma single coeff elimination threshold * - encoding: Set by user. * - decoding: unused *) chroma_elim_threshold: cint; (** * strictly follow the standard (MPEG4, ...). * - encoding: Set by user. * - decoding: Set by user. * Setting this to STRICT or higher means the encoder and decoder will * generally do stupid things. While setting it to inofficial or lower * will mean the encoder might use things that are not supported by all * spec compliant decoders. Decoders make no difference between normal, * inofficial and experimental, that is they always try to decode things * when they can unless they are explicitly asked to behave stupid * (=strictly conform to the specs) *) strict_std_compliance: cint; (** * qscale offset between IP and B-frames * - encoding: Set by user. * - decoding: unused *) b_quant_offset: cfloat; (** * Error recognization; higher values will detect more errors but may * misdetect some more or less valid parts as errors. * - encoding: unused * - decoding: Set by user. *) error_recognition: cint; (** * Called at the beginning of each frame to get a buffer for it. * If pic.reference is set then the frame will be read later by libavcodec. * avcodec_align_dimensions() should be used to find the required width and * height, as they normally need to be rounded up to the next multiple of 16. * if CODEC_CAP_DR1 is not set then get_buffer() must call * avcodec_default_get_buffer() instead of providing buffers allocated by * some other means. * - encoding: unused * - decoding: Set by libavcodec., user can override. *) get_buffer: function (c: PAVCodecContext; pic: PAVFrame): cint; cdecl; (** * Called to release buffers which were allocated with get_buffer. * A released buffer can be reused in get_buffer(). * pic.data[*] must be set to NULL. * - encoding: unused * - decoding: Set by libavcodec., user can override. *) release_buffer: procedure (c: PAVCodecContext; pic: PAVFrame); cdecl; (** * Size of the frame reordering buffer in the decoder. * For MPEG-2 it is 1 IPB or 0 low delay IP. * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. *) has_b_frames: cint; (** * number of bytes per packet if constant and known or 0 * Used by some WAV based audio codecs. *) block_align: cint; parse_only: cint; (* - decoding only: if true, only parsing is done (function avcodec_parse_frame()). The frame data is returned. Only MPEG codecs support this now. *) (** * 0-> h263 quant 1-> mpeg quant * - encoding: Set by user. * - decoding: unused *) mpeg_quant: cint; (** * pass1 encoding statistics output buffer * - encoding: Set by libavcodec. * - decoding: unused *) stats_out: PByteArray; (** * pass2 encoding statistics input buffer * Concatenated stuff from stats_out of pass1 should be placed here. * - encoding: Allocated/set/freed by user. * - decoding: unused *) stats_in: PByteArray; (** * ratecontrol qmin qmax limiting method * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax. * - encoding: Set by user. * - decoding: unused *) rc_qsquish: cfloat; rc_qmod_amp: cfloat; rc_qmod_freq: cint; (** * ratecontrol override, see RcOverride * - encoding: Allocated/set/freed by user. * - decoding: unused *) rc_override: PRcOverride; rc_override_count: cint; (** * rate control equation * - encoding: Set by user * - decoding: unused *) rc_eq: {const} PByteArray; (** * maximum bitrate * - encoding: Set by user. * - decoding: unused *) rc_max_rate: cint; (** * minimum bitrate * - encoding: Set by user. * - decoding: unused *) rc_min_rate: cint; (** * decoder bitstream buffer size * - encoding: Set by user. * - decoding: unused *) rc_buffer_size: cint; rc_buffer_aggressivity: cfloat; (** * qscale factor between P and I-frames * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset). * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). * - encoding: Set by user. * - decoding: unused *) i_quant_factor: cfloat; (** * qscale offset between P and I-frames * - encoding: Set by user. * - decoding: unused *) i_quant_offset: cfloat; (** * initial complexity for pass1 ratecontrol * - encoding: Set by user. * - decoding: unused *) rc_initial_cplx: cfloat; (** * DCT algorithm, see FF_DCT_* below * - encoding: Set by user. * - decoding: unused *) dct_algo: cint; (** * luminance masking (0-> disabled) * - encoding: Set by user. * - decoding: unused *) lumi_masking: cfloat; (** * temporary complexity masking (0-> disabled) * - encoding: Set by user. * - decoding: unused *) temporal_cplx_masking: cfloat; (** * spatial complexity masking (0-> disabled) * - encoding: Set by user. * - decoding: unused *) spatial_cplx_masking: cfloat; (** * p block masking (0-> disabled) * - encoding: Set by user. * - decoding: unused *) p_masking: cfloat; (** * darkness masking (0-> disabled) * - encoding: Set by user. * - decoding: unused *) dark_masking: cfloat; {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 (* for binary compatibility *) unused: cint; {$IFEND} (** * IDCT algorithm, see FF_IDCT_* below. * - encoding: Set by user. * - decoding: Set by user. *) idct_algo: cint; (** * slice count * - encoding: Set by libavcodec. * - decoding: Set by user (or 0). *) slice_count: cint; (** * slice offsets in the frame in bytes * - encoding: Set/allocated by libavcodec. * - decoding: Set/allocated by user (or NULL). *) slice_offset: PCint; (** * error concealment flags * - encoding: unused * - decoding: Set by user. *) error_concealment: cint; (** * dsp_mask could be add used to disable unwanted CPU features * CPU features (i.e. MMX, SSE. ...) * * With the FORCE flag you may instead enable given CPU features. * (Dangerous: Usable in case of misdetection, improper usage however will * result into program crash.) *) dsp_mask: cuint; (** * bits per sample/pixel from the demuxer (needed for huffyuv). * - encoding: Set by libavcodec. * - decoding: Set by user. *) bits_per_coded_sample: cint; (** * prediction method (needed for huffyuv) * - encoding: Set by user. * - decoding: unused *) prediction_method: cint; (** * sample aspect ratio (0 if unknown) * That is the width of a pixel divided by the height of the pixel. * Numerator and denominator must be relatively prime and smaller than 256 for some video standards. * - encoding: Set by user. * - decoding: Set by libavcodec. *) sample_aspect_ratio: TAVRational; (** * the picture in the bitstream * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. *) coded_frame: PAVFrame; (** * debug * - encoding: Set by user. * - decoding: Set by user. *) debug: cint; (** * debug * - encoding: Set by user. * - decoding: Set by user. *) debug_mv: cint; (** * error * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR. * - decoding: unused *) error: array [0..3] of cuint64; (** * minimum MB quantizer * - encoding: unused * - decoding: unused *) mb_qmin: cint; (** * maximum MB quantizer * - encoding: unused * - decoding: unused *) mb_qmax: cint; (** * motion estimation comparison function * - encoding: Set by user. * - decoding: unused *) me_cmp: cint; (** * subpixel motion estimation comparison function * - encoding: Set by user. * - decoding: unused *) me_sub_cmp: cint; (** * macroblock comparison function (not supported yet) * - encoding: Set by user. * - decoding: unused *) mb_cmp: cint; (** * interlaced DCT comparison function * - encoding: Set by user. * - decoding: unused *) ildct_cmp: cint; (** * ME diamond size & shape * - encoding: Set by user. * - decoding: unused *) dia_size: cint; (** * amount of previous MV predictors (2a+1 x 2a+1 square) * - encoding: Set by user. * - decoding: unused *) last_predictor_count: cint; (** * prepass for motion estimation * - encoding: Set by user. * - decoding: unused *) pre_me: cint; (** * motion estimation prepass comparison function * - encoding: Set by user. * - decoding: unused *) me_pre_cmp: cint; (** * ME prepass diamond size & shape * - encoding: Set by user. * - decoding: unused *) pre_dia_size: cint; (** * subpel ME quality * - encoding: Set by user. * - decoding: unused *) me_subpel_quality: cint; (** * callback to negotiate the pixelFormat * @param fmt is the list of formats which are supported by the codec, * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality. * The first is always the native one. * @return the chosen format * - encoding: unused * - decoding: Set by user, if not set the native format will be chosen. *) get_format: function (s: PAVCodecContext; fmt: {const} PAVPixelFormat): TAVPixelFormat; cdecl; (** * DTG active format information (additional aspect ratio * information only used in DVB MPEG-2 transport streams) * 0 if not set. * * - encoding: unused * - decoding: Set by decoder. *) dtg_active_format: cint; (** * maximum motion estimation search range in subpel units * If 0 then no limit. * * - encoding: Set by user. * - decoding: unused *) me_range: cint; (** * intra quantizer bias * - encoding: Set by user. * - decoding: unused *) intra_quant_bias: cint; (** * inter quantizer bias * - encoding: Set by user. * - decoding: unused *) inter_quant_bias: cint; (** * color table ID * - encoding: unused * - decoding: Which clrtable should be used for 8bit RGB images. * Tables have to be stored somewhere. FIXME *) color_table_id: cint; (** * internal_buffer count * Don't touch, used by libavcodec default_get_buffer(). *) internal_buffer_count: cint; (** * internal_buffers * Don't touch, used by libavcodec default_get_buffer(). *) internal_buffer: pointer; (** * Global quality for codecs which cannot change it per frame. * This should be proportional to MPEG-1/2/4 qscale. * - encoding: Set by user. * - decoding: unused *) global_quality: cint; (** * coder type * - encoding: Set by user. * - decoding: unused *) coder_type: cint; (** * context model * - encoding: Set by user. * - decoding: unused *) context_model: cint; { (** * * - encoding: unused * - decoding: Set by user. *) realloc: function (s: PAVCodecContext; buf: Pbyte; buf_size: cint): Pbyte; cdecl; } (** * slice flags * - encoding: unused * - decoding: Set by user. *) slice_flags: cint; (** * XVideo Motion Acceleration * - encoding: forbidden * - decoding: set by decoder *) xvmc_acceleration: cint; (** * macroblock decision mode * - encoding: Set by user. * - decoding: unused *) mb_decision: cint; (** * custom intra quantization matrix * - encoding: Set by user, can be NULL. * - decoding: Set by libavcodec. *) intra_matrix: PWord; (** * custom inter quantization matrix * - encoding: Set by user, can be NULL. * - decoding: Set by libavcodec. *) inter_matrix: PWord; (** * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). * This is used to work around some encoder bugs. * - encoding: unused * - decoding: Set by user, will be converted to uppercase by libavcodec during init. *) stream_codec_tag: array [0..3] of AnsiChar; //cuint; (** * scene change detection threshold * 0 is default, larger means fewer detected scene changes. * - encoding: Set by user. * - decoding: unused *) scenechange_threshold: cint; (** * minimum Lagrange multipler * - encoding: Set by user. * - decoding: unused *) lmin: cint; (** * maximum Lagrange multipler * - encoding: Set by user. * - decoding: unused *) lmax: cint; (** * palette control structure * - encoding: ??? (no palette-enabled encoder yet) * - decoding: Set by user. *) palctrl: PAVPaletteControl; (** * noise reduction strength * - encoding: Set by user. * - decoding: unused *) noise_reduction: cint; (** * Called at the beginning of a frame to get cr buffer for it. * Buffer type (size, hints) must be the same. libavcodec won't check it. * libavcodec will pass previous buffer in pic, function should return * same buffer or new buffer with old frame "painted" into it. * If pic.data[0] == NULL must behave like get_buffer(). * if CODEC_CAP_DR1 is not set then reget_buffer() must call * avcodec_default_reget_buffer() instead of providing buffers allocated by * some other means. * - encoding: unused * - decoding: Set by libavcodec., user can override *) reget_buffer: function (c: PAVCodecContext; pic: PAVFrame): cint; cdecl; (** * Number of bits which should be loaded into the rc buffer before decoding starts. * - encoding: Set by user. * - decoding: unused *) rc_initial_buffer_occupancy: cint; (** * * - encoding: Set by user. * - decoding: unused *) inter_threshold: cint; (** * CODEC_FLAG2_* * - encoding: Set by user. * - decoding: Set by user. *) flags2: cint; (** * Simulates errors in the bitstream to test error concealment. * - encoding: Set by user. * - decoding: unused *) error_rate: cint; (** * MP3 antialias algorithm, see FF_AA_* below. * - encoding: unused * - decoding: Set by user. *) antialias_algo: cint; (** * quantizer noise shaping * - encoding: Set by user. * - decoding: unused *) quantizer_noise_shaping: cint; (** * thread count * is used to decide how many independent tasks should be passed to execute() * - encoding: Set by user. * - decoding: Set by user. *) thread_count: cint; (** * The codec may call this to execute several independent things. * It will return only after finishing all tasks. * The user may replace this with some multithreaded implementation, * the default implementation will execute the parts serially. * @param count the number of things to execute * - encoding: Set by libavcodec, user can override. * - decoding: Set by libavcodec, user can override. *) {$IF LIBAVCODEC_VERSION < 52004000} // < 52.4.0 execute: function (c: PAVCodecContext; func: TExecuteFunc; arg: PPointer; ret: PCint; count: cint): cint; cdecl; {$ELSE} execute: function (c: PAVCodecContext; func: TExecuteFunc; arg: Pointer; ret: PCint; count: cint; size: cint): cint; cdecl; {$IFEND} (** * thread opaque * Can be used by execute() to store some per AVCodecContext stuff. * - encoding: set by execute() * - decoding: set by execute() *) thread_opaque: pointer; (** * Motion estimation threshold below which no motion estimation is * performed, but instead the user specified motion vectors are used. * * - encoding: Set by user. * - decoding: unused *) me_threshold: cint; (** * Macroblock threshold below which the user specified macroblock types will be used. * - encoding: Set by user. * - decoding: unused *) mb_threshold: cint; (** * precision of the intra DC coefficient - 8 * - encoding: Set by user. * - decoding: unused *) intra_dc_precision: cint; (** * noise vs. sse weight for the nsse comparsion function * - encoding: Set by user. * - decoding: unused *) nsse_weight: cint; (** * Number of macroblock rows at the top which are skipped. * - encoding: unused * - decoding: Set by user. *) skip_top: cint; (** * Number of macroblock rows at the bottom which are skipped. * - encoding: unused * - decoding: Set by user. *) skip_bottom: cint; (** * profile * - encoding: Set by user. * - decoding: Set by libavcodec. *) profile: cint; (** * level * - encoding: Set by user. * - decoding: Set by libavcodec. *) level: cint; (** * low resolution decoding, 1-> 1/2 size, 2->1/4 size * - encoding: unused * - decoding: Set by user. *) lowres: cint; (** * Bitstream width / height, may be different from width/height if lowres * or other things are used. * - encoding: unused * - decoding: Set by user before init if known. Codec should override / dynamically change if needed. *) coded_width, coded_height: cint; (** * frame skip threshold * - encoding: Set by user. * - decoding: unused *) frame_skip_threshold: cint; (** * frame skip factor * - encoding: Set by user. * - decoding: unused *) frame_skip_factor: cint; (** * frame skip exponent * - encoding: Set by user. * - decoding: unused *) frame_skip_exp: cint; (** * frame skip comparison function * - encoding: Set by user. * - decoding: unused *) frame_skip_cmp: cint; (** * Border processing masking, raises the quantizer for mbs on the borders * of the picture. * - encoding: Set by user. * - decoding: unused *) border_masking: cfloat; (** * minimum MB lagrange multipler * - encoding: Set by user. * - decoding: unused *) mb_lmin: cint; (** * maximum MB lagrange multipler * - encoding: Set by user. * - decoding: unused *) mb_lmax: cint; (** * * - encoding: Set by user. * - decoding: unused *) me_penalty_compensation: cint; (** * * - encoding: unused * - decoding: Set by user. *) skip_loop_filter: TAVDiscard; (** * * - encoding: unused * - decoding: Set by user. *) skip_idct: TAVDiscard; (** * * - encoding: unused * - decoding: Set by user. *) skip_frame: TAVDiscard; (** * * - encoding: Set by user. * - decoding: unused *) bidir_refine: cint; (** * * - encoding: Set by user. * - decoding: unused *) brd_scale: cint; (** * constant rate factor - quality-based VBR - values ~correspond to qps * - encoding: Set by user. * - decoding: unused *) {$IF LIBAVCODEC_VERSION >= 51021000} // 51.21.0 crf: cfloat; {$ELSE} crf: cint; {$IFEND} (** * constant quantization parameter rate control method * - encoding: Set by user. * - decoding: unused *) cqp: cint; (** * minimum GOP size * - encoding: Set by user. * - decoding: unused *) keyint_min: cint; (** * number of reference frames * - encoding: Set by user. * - decoding: Set by lavc. *) refs: cint; (** * chroma qp offset from luma * - encoding: Set by user. * - decoding: unused *) chromaoffset: cint; (** * Influences how often B-frames are used. * - encoding: Set by user. * - decoding: unused *) bframebias: cint; (** * trellis RD quantization * - encoding: Set by user. * - decoding: unused *) trellis: cint; (** * Reduce fluctuations in qp (before curve compression). * - encoding: Set by user. * - decoding: unused *) complexityblur: cfloat; (** * in-loop deblocking filter alphac0 parameter * alpha is in the range -6...6 * - encoding: Set by user. * - decoding: unused *) deblockalpha: cint; (** * in-loop deblocking filter beta parameter * beta is in the range -6...6 * - encoding: Set by user. * - decoding: unused *) deblockbeta: cint; (** * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4 * - encoding: Set by user. * - decoding: unused *) partitions: cint; (** * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto) * - encoding: Set by user. * - decoding: unused *) directpred: cint; (** * Audio cutoff bandwidth (0 means "automatic") * - encoding: Set by user. * - decoding: unused *) cutoff: cint; (** * Multiplied by qscale for each frame and added to scene_change_score. * - encoding: Set by user. * - decoding: unused *) scenechange_factor: cint; (** * * Note: Value depends upon the compare function used for fullpel ME. * - encoding: Set by user. * - decoding: unused *) mv0_threshold: cint; (** * Adjusts sensitivity of b_frame_strategy 1. * - encoding: Set by user. * - decoding: unused *) b_sensitivity: cint; (** * - encoding: Set by user. * - decoding: unused *) compression_level: cint; (** * Sets whether to use LPC mode - used by FLAC encoder. * - encoding: Set by user. * - decoding: unused *) use_lpc: cint; (** * LPC coefficient precision - used by FLAC encoder * - encoding: Set by user. * - decoding: unused *) lpc_coeff_precision: cint; (** * - encoding: Set by user. * - decoding: unused *) min_prediction_order: cint; (** * - encoding: Set by user. * - decoding: unused *) max_prediction_order: cint; (** * search method for selecting prediction order * - encoding: Set by user. * - decoding: unused *) prediction_order_method: cint; (** * - encoding: Set by user. * - decoding: unused *) min_partition_order: cint; (** * - encoding: Set by user. * - decoding: unused *) max_partition_order: cint; {$IF LIBAVCODEC_VERSION >= 51026000} // 51.26.0 (** * GOP timecode frame start number, in non drop frame format * - encoding: Set by user. * - decoding: unused *) timecode_frame_start: cint64; {$IFEND} {$IF LIBAVCODEC_VERSION >= 51042000} // 51.42.0 {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} (** * Decoder should decode to this many channels if it can (0 for default) * - encoding: unused * - decoding: Set by user. * @deprecated Deprecated in favor of request_channel_layout. *) request_channels: cint; {$IFEND} {$IFEND} {$IF LIBAVCODEC_VERSION > 51049000} // > 51.49.0 (** * Percentage of dynamic range compression to be applied by the decoder. * The default value is 1.0, corresponding to full compression. * - encoding: unused * - decoding: Set by user. *) drc_scale: cfloat; {$IFEND} {$IF LIBAVCODEC_VERSION >= 51068000} // 51.68.0 (** * opaque 64bit number (generally a PTS) that will be reordered and * output in AVFrame.reordered_opaque * - encoding: unused * - decoding: Set by user. *) reordered_opaque: cint64; {$IFEND} {$IF LIBAVCODEC_VERSION >= 51069000} // 51.69.0 (** * Bits per sample/pixel of internal libavcodec pixel/sample format. * This field is applicable only when sample_fmt is SAMPLE_FMT_S32. * - encoding: set by user. * - decoding: set by libavcodec. *) bits_per_raw_sample: cint; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52002000} // 52.2.0 (** * Audio channel layout. * - encoding: set by user. * - decoding: set by libavcodec. *) channel_layout: cint64; (** * Request decoder to use this channel layout if it can (0 for default) * - encoding: unused * - decoding: Set by user. *) request_channel_layout: cint64; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52004000} // >= 52.4.0 (** * Ratecontrol attempt to use, at maximum, 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; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52018000} // >= 52.18.0 (** * Hardware accelerator in use * - encoding: unused. * - decoding: Set by libavcodec *) hwaccel: PAVHWAccel; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52020000} // >= 52.20.0 (** * For some codecs, the time base is closer to the field rate than the frame rate. * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration * if no telecine is used ... * * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2. *) ticks_per_frame: cint; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52021000} // >= 52.21.0 (** * Hardware accelerator context. * For some hardware accelerators, a global context needs to be * provided by the user. In that case, this holds display-dependent * data FFmpeg cannot instantiate itself. Please refer to the * FFmpeg HW accelerator documentation to know how to fill this * is. e.g. for VA API, this is a struct vaapi_context. * - encoding: unused * - decoding: Set by user *) hwaccel_context: pointer; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52028000} // >= 52.28.0 (** * Chromaticity coordinates of the source primaries. * - encoding: Set by user * - decoding: Set by libavcodec *) color_primaries: TAVColorPrimaries; (** * Color Transfer Characteristic. * - encoding: Set by user * - decoding: Set by libavcodec *) color_trc: TAVColorTransferCharacteristic; (** * YUV colorspace type. * - encoding: Set by user * - decoding: Set by libavcodec *) colorspace: TAVColorSpace; (** * MPEG vs JPEG YUV range. * - encoding: Set by user * - decoding: Set by libavcodec *) color_range: TAVColorRange; (** * This defines the location of chroma samples. * - encoding: Set by user * - decoding: Set by libavcodec *) chroma_sample_location: TAVChromaLocation; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52037000} // >= 52.37.0 (** * The codec may call this to execute several independent things. * It will return only after finishing all tasks. * The user may replace this with some multithreaded implementation, * the default implementation will execute the parts serially. * Also see avcodec_thread_init and e.g. the --enable-pthread configure option. * @param c context passed also to func * @param count the number of things to execute * @param arg2 argument passed unchanged to func * @param ret return values of executed functions, must have space for "count" values. May be NULL. * @param func function that will be called count times, with jobnr from 0 to count-1. * threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no * two instances of func executing at the same time will have the same threadnr. * @return always 0 currently, but code should handle a future improvement where when any call to func * returns < 0 no further calls to func may be done and < 0 is returned. * - encoding: Set by libavcodec, user can override. * - decoding: Set by libavcodec, user can override. *) execute2: function (c: PAVCodecContext; func: TExecute2Func; arg2: Pointer; ret: Pcint; count: cint): cint; cdecl; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52042000} // >= 52.42.0 (** * explicit P-frame weighted prediction analysis method * 0: off * 1: fast blind weighting (one reference duplicate with -1 offset) * 2: smart weighting (full fade detection analysis) * - encoding: Set by user. * - decoding: unused *) weighted_p_pred: cint; {$IFEND} end; (** * AVCodec. *) TAVCodec = record name: PAnsiChar; type_: TCodecType; id: TCodecID; priv_data_size: cint; init: function (avctx: PAVCodecContext): cint; cdecl; (* typo corretion by the Creative CAT *) encode: function (avctx: PAVCodecContext; buf: PByteArray; buf_size: cint; data: pointer): cint; cdecl; close: function (avctx: PAVCodecContext): cint; cdecl; decode: function (avctx: PAVCodecContext; outdata: pointer; var outdata_size: cint; {$IF LIBAVCODEC_VERSION < 52025000} // 52.25.0 buf: {const} PByteArray; buf_size: cint): cint; cdecl; {$ELSE} avpkt: PAVPacket): cint; cdecl; {$IFEND} (** * Codec capabilities. * see CODEC_CAP_* *) capabilities: cint; next: PAVCodec; (** * Flush buffers. * Will be called when seeking *) flush: procedure (avctx: PAVCodecContext); cdecl; supported_framerates: {const} PAVRational; ///< array of supported framerates, or NULL if any, array is terminated by {0,0} pix_fmts: {const} PAVPixelFormat; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1 {$IF LIBAVCODEC_VERSION >= 51055000} // 51.55.0 (** * Descriptive name for the codec, meant to be more human readable than name. * You should use the NULL_IF_CONFIG_SMALL() macro to define it. *) long_name: {const} PAnsiChar; {$IFEND} {$IF LIBAVCODEC_VERSION >= 51056000} // 51.56.0 supported_samplerates: {const} PCint; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0 {$IFEND} {$IF LIBAVCODEC_VERSION >= 51062000} // 51.62.0 sample_fmts: {const} PSampleFormatArray; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1 {$IFEND} {$IF LIBAVCODEC_VERSION >= 52002000} // 52.2.0 channel_layouts: {const} PCint64; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0 {$IFEND} end; {$IF LIBAVCODEC_VERSION >= 52018000} // 52.18.0 (** * AVHWAccel. *) TAVHWAccel = record (** * Name of the hardware accelerated codec. * The name is globally unique among encoders and among decoders (but an * encoder and a decoder can share the same name). *) name: PAnsiChar; (** * Type of codec implemented by the hardware accelerator. * * See CODEC_TYPE_xxx *) type_: TCodecType; (** * Codec implemented by the hardware accelerator. * * See CODEC_ID_xxx *) id: TCodecID; (** * Supported pixel format. * * Only hardware accelerated formats are supported here. *) pix_fmt: {const} PAVPixelFormat; (** * Hardware accelerated codec capabilities. * see FF_HWACCEL_CODEC_CAP_* *) capabilities: cint; next: PAVCodec; (** * Called at the beginning of each frame or field picture. * * Meaningful frame information (codec specific) is guaranteed to * be parsed at this point. This function is mandatory. * * Note that buf can be NULL along with buf_size set to 0. * Otherwise, this means the whole frame is available at this point. * * @param avctx the codec context * @param buf the frame data buffer base * @param buf_size the size of the frame in bytes * @return zero if successful, a negative value otherwise *) start_frame: function (avctx: PAVCodecContext; buf: PByteArray; buf_size: cint): cint; cdecl; (** * Callback for each slice. * * Meaningful slice information (codec specific) is guaranteed to * be parsed at this point. This function is mandatory. * * @param avctx the codec context * @param buf the slice data buffer base * @param buf_size the size of the slice in bytes * @return zero if successful, a negative value otherwise *) decode_slice: function (avctx: PAVCodecContext; buf: PByteArray; buf_size: cint): cint; cdecl; (** * Called at the end of each frame or field picture. * * The whole picture is parsed at this point and can now be sent * to the hardware accelerator. This function is mandatory. * * @param avctx the codec context * @return zero if successful, a negative value otherwise *) end_frame: function (avctx: PAVCodecContext): cint; cdecl; {$IF LIBAVCODEC_VERSION >= 52021000} // >= 52.21.0 (** * Size of HW accelerator private data. * * Private data is allocated with av_mallocz() before * AVCodecContext.get_buffer() and deallocated after * AVCodecContext.release_buffer(). *) priv_data_size: cint; {$IFEND} end; {$IFEND} (** * four components are given, that's all. * the last component is alpha *) PAVPicture = ^TAVPicture; TAVPicture = record data: array [0..3] of PByteArray; linesize: array [0..3] of cint; ///< number of bytes per line end; type TAVSubtitleType = ( SUBTITLE_NONE, SUBTITLE_BITMAP, ///< A bitmap, pict will be set (** * Plain text, the text field must be set by the decoder and is * authoritative. ass and pict fields may contain approximations. *) SUBTITLE_TEXT, (** * Formatted text, the ass field must be set by the decoder and is * authoritative. pict and text fields may contain approximations. *) SUBTITLE_ASS ); type PPAVSubtitleRect = ^PAVSubtitleRect; PAVSubtitleRect = ^TAVSubtitleRect; {$IF LIBAVCODEC_VERSION < 52010000} // < 52.10.0 TAVSubtitleRect = record x: cuint16; y: cuint16; w: cuint16; h: cuint16; nb_colors: cuint16; linesize: cint; rgba_palette: PCuint32; bitmap: PCuint8; end; {$ELSE} TAVSubtitleRect = record x: cint; ///< top left corner of pict, undefined when pict is not set y: cint; ///< top left corner of pict, undefined when pict is not set w: cint; ///< width of pict, undefined when pict is not set h: cint; ///< height of pict, undefined when pict is not set nb_colors: cint; ///< number of colors in pict, undefined when pict is not set (** * data+linesize for the bitmap of this subtitle. * can be set for text/ass as well once they where rendered *) pict: TAVPicture; type_: TAVSubtitleType; text: PAnsiChar; ///< 0 terminated plain UTF-8 text (** * 0 terminated ASS/SSA compatible event line. * The pressentation of this is unaffected by the other values in this * struct. *) ass: PByteArray; end; {$IFEND} PPAVSubtitle = ^PAVSubtitle; PAVSubtitle = ^TAVSubtitle; TAVSubtitle = record format: cuint16; (* 0 = graphics *) start_display_time: cuint32; (* relative to packet pts, in ms *) end_display_time: cuint32; (* relative to packet pts, in ms *) num_rects: cuint; {$IF LIBAVCODEC_VERSION < 52010000} // < 52.10.0 rects: PAVSubtitleRect; {$ELSE} rects: PPAVSubtitleRect; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52032000} // >= 52.32.0 pts: cint64; ///< Same as packet pts, in AV_TIME_BASE {$IFEND} end; {$IF LIBAVCODEC_VERSION >= 52025000} // 52.25.0 { packet functions } (** * @deprecated use NULL instead *) procedure av_destruct_packet_nofree(pkt: PAVPacket); cdecl; external av__codec; (* * Default packet destructor. *) procedure av_destruct_packet(pkt: PAVPacket); cdecl; external av__codec; (* * Initialize optional fields of a packet with default values. * * @param pkt packet *) procedure av_init_packet(var pkt: TAVPacket); cdecl; external av__codec; (* * Allocate the payload of a packet and initialize its fields with * default values. * * @param pkt packet * @param size wanted payload size * @return 0 if OK, AVERROR_xxx otherwise *) function av_new_packet(pkt: PAVPacket; size: cint): cint; cdecl; external av__codec; (* * Reduce packet size, correctly zeroing padding * * @param pkt packet * @param size new size *) procedure av_shrink_packet(pkt: PAVPacket; size: cint); cdecl; external av__codec; (* * @warning This is a hack - the packet memory allocation stuff is broken. The * packet is allocated if it was not really allocated. *) function av_dup_packet(pkt: PAVPacket): cint; cdecl; external av__codec; (* * Free a packet. * * @param pkt packet to free *) procedure av_free_packet(pkt: PAVPacket); {$IF LIBAVCODEC_VERSION >= 52028000} // 52.28.0 cdecl; external av__codec; {$IFEND} {$IFEND} (* resample.c *) type PReSampleContext = pointer; PAVResampleContext = pointer; PImgReSampleContext = pointer; function audio_resample_init (output_channels: cint; input_channels: cint; output_rate: cint; input_rate: cint): PReSampleContext; cdecl; external av__codec; function audio_resample (s: PReSampleContext; output: PSmallint; input: PSmallint; nb_samples: cint): cint; cdecl; external av__codec; procedure audio_resample_close (s: PReSampleContext); cdecl; external av__codec; (** * Initializes an audio resampler. * Note, if either rate is not an integer then simply scale both rates up so they are. * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq * @param log2_phase_count log2 of the number of entries in the polyphase filterbank * @param linear If 1 then the used FIR filter will be linearly interpolated between the 2 closest, if 0 the closest will be used * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate *) function av_resample_init (out_rate: cint; in_rate: cint; filter_length: cint; log2_phase_count: cint; linear: cint; cutoff: cdouble): PAVResampleContext; cdecl; external av__codec; (** * resamples. * @param src an array of unconsumed samples * @param consumed the number of samples of src which have been consumed are returned here * @param src_size the number of unconsumed samples available * @param dst_size the amount of space in samples available in dst * @param update_ctx If this is 0 then the context will not be modified, that way several channels can be resampled with the same context. * @return the number of samples written in dst or -1 if an error occurred *) function av_resample (c: PAVResampleContext; dst: PSmallint; src: PSmallint; var consumed: cint; src_size: cint; dst_size: cint; update_ctx: cint): cint; cdecl; external av__codec; (** * Compensates samplerate/timestamp drift. The compensation is done by changing * the resampler parameters, so no audible clicks or similar distortions occur * @param compensation_distance distance in output samples over which the compensation should be performed * @param sample_delta number of output samples which should be output less * * example: av_resample_compensate(c, 10, 500) * here instead of 510 samples only 500 samples would be output * * note, due to rounding the actual compensation might be slightly different, * especially if the compensation_distance is large and the in_rate used during init is small *) procedure av_resample_compensate (c: PAVResampleContext; sample_delta: cint; compensation_distance: cint); cdecl; external av__codec; procedure av_resample_close (c: PAVResampleContext); cdecl; external av__codec; {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 (* YUV420 format is assumed ! *) (** * @deprecated Use the software scaler (swscale) instead. *) function img_resample_init (output_width: cint; output_height: cint; input_width: cint; input_height: cint): PImgReSampleContext; cdecl; external av__codec; deprecated; (** * @deprecated Use the software scaler (swscale) instead. *) function img_resample_full_init (owidth: cint; oheight: cint; iwidth: cint; iheight: cint; topBand: cint; bottomBand: cint; leftBand: cint; rightBand: cint; padtop: cint; padbottom: cint; padleft: cint; padright: cint): PImgReSampleContext; cdecl; external av__codec; deprecated; (** * @deprecated Use the software scaler (swscale) instead. *) procedure img_resample (s: PImgReSampleContext; output: PAVPicture; input: {const} PAVPicture); cdecl; external av__codec; deprecated; (** * @deprecated Use the software scaler (swscale) instead. *) procedure img_resample_close (s: PImgReSampleContext); cdecl; external av__codec; deprecated; {$IFEND} (** * Allocate memory for a picture. Call avpicture_free to free it. * * @param picture the picture to be filled in. * @param pix_fmt the format of the picture. * @param width the width of the picture. * @param height the height of the picture. * @return Zero if successful, a negative value if not. *) function avpicture_alloc (picture: PAVPicture; pix_fmt: TAVPixelFormat; width: cint; height: cint): cint; cdecl; external av__codec; (** * Free a picture previously allocated by avpicture_alloc(). * * @param picture the AVPicture to be freed *) procedure avpicture_free (picture: PAVPicture); cdecl; external av__codec; (** * Fill in the AVPicture fields. * The fields of the given AVPicture are filled in by using the 'ptr' address * which points to the image data buffer. Depending on the specified picture * format, one or multiple image data pointers and line sizes will be set. * If a planar format is specified, several pointers will be set pointing to * the different picture planes and the line sizes of the different planes * will be stored in the lines_sizes array. * Call with ptr == NULL to get the required size for the ptr buffer. * * @param picture AVPicture whose fields are to be filled in * @param ptr Buffer which will contain or contains the actual image data * @param pix_fmt The format in which the picture data is stored. * @param width the width of the image in pixels * @param height the height of the image in pixels * @return size of the image data in bytes *) function avpicture_fill (picture: PAVPicture; ptr: pointer; pix_fmt: TAVPixelFormat; width: cint; height: cint): cint; cdecl; external av__codec; function avpicture_layout (src: {const} PAVPicture; pix_fmt: TAVPixelFormat; width: cint; height: cint; dest: PByteArray; dest_size: cint): cint; cdecl; external av__codec; (** * Calculate the size in bytes that a picture of the given width and height * would occupy if stored in the given picture format. * Note that this returns the size of a compact representation as generated * by avpicture_layout, which can be smaller than the size required for e.g. * avpicture_fill. * * @param pix_fmt the given picture format * @param width the width of the image * @param height the height of the image * @return Image data size in bytes or -1 on error (e.g. too large dimensions). *) function avpicture_get_size (pix_fmt: TAVPixelFormat; width: cint; height: cint): cint; cdecl; external av__codec; procedure avcodec_get_chroma_sub_sample (pix_fmt: TAVPixelFormat; var h_shift: cint; var v_shift: cint); cdecl; external av__codec; (** * Returns the pixel format corresponding to the name \p name. * * If there is no pixel format with name \p name, then looks for a * pixel format with the name corresponding to the native endian * format of \p name. * For example in a little-endian system, first looks for "gray16", * then for "gray16le". * * Finally if no pixel format has been found, returns \c PIX_FMT_NONE. *) function avcodec_get_pix_fmt_name(pix_fmt: TAVPixelFormat): PAnsiChar; cdecl; external av__codec; procedure avcodec_set_dimensions(s: PAVCodecContext; width: cint; height: cint); cdecl; external av__codec; {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} (** * Returns the pixel format corresponding to the name name. * * If there is no pixel format with name name, then looks for a * pixel format with the name corresponding to the native endian * format of name. * For example in a little-endian system, first looks for "gray16", * then for "gray16le". * * Finally if no pixel format has been found, returns PIX_FMT_NONE.* * @deprecated Deprecated in favor of av_get_pix_fmt(). *) function avcodec_get_pix_fmt(name: {const} PAnsiChar): TAVPixelFormat; cdecl; external av__codec; {$IF LIBAVCODEC_VERSION >= 52049000} // >= 52.49.0 deprecated; {$IFEND} {$IFEND} (** * Returns a value representing the fourCC code associated to the * pixel format pix_fmt, or 0 if no associated fourCC code can be * found. *) function avcodec_pix_fmt_to_codec_tag(pix_fmt: TAVPixelFormat): cuint; cdecl; external av__codec; const FF_LOSS_RESOLUTION = $0001; {**< loss due to resolution change *} FF_LOSS_DEPTH = $0002; {**< loss due to color depth change *} FF_LOSS_COLORSPACE = $0004; {**< loss due to color space conversion *} FF_LOSS_ALPHA = $0008; {**< loss of alpha bits *} FF_LOSS_COLORQUANT = $0010; {**< loss due to color quantization *} FF_LOSS_CHROMA = $0020; {**< loss of chroma (e.g. RGB to gray conversion) *} (** * Computes what kind of losses will occur when converting from one specific * pixel format to another. * When converting from one pixel format to another, information loss may occur. * For example, when converting from RGB24 to GRAY, the color information will * be lost. Similarly, other losses occur when converting from some formats to * other formats. These losses can involve loss of chroma, but also loss of * resolution, loss of color depth, loss due to the color space conversion, loss * of the alpha bits or loss due to color quantization. * avcodec_get_fix_fmt_loss() informs you about the various types of losses * which will occur when converting from one pixel format to another. * * @param[in] dst_pix_fmt destination pixel format * @param[in] src_pix_fmt source pixel format * @param[in] has_alpha Whether the source pixel format alpha channel is used. * @return Combination of flags informing you what kind of losses will occur. *) function avcodec_get_pix_fmt_loss (dst_pix_fmt: TAVPixelFormat; src_pix_fmt: TAVPixelFormat; has_alpha: cint): cint; cdecl; external av__codec; (** * Finds the best pixel format to convert to given a certain source pixel * format. When converting from one pixel format to another, information loss * may occur. For example, when converting from RGB24 to GRAY, the color * information will be lost. Similarly, other losses occur when converting from * some formats to other formats. avcodec_find_best_pix_fmt() searches which of * the given pixel formats should be used to suffer the least amount of loss. * The pixel formats from which it chooses one, are determined by the * pix_fmt_mask parameter. * * @code * src_pix_fmt = PIX_FMT_YUV420P; * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24); * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss); * @endcode * * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from * @param[in] src_pix_fmt source pixel format * @param[in] has_alpha Whether the source pixel format alpha channel is used. * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur. * @return The best pixel format to convert to or -1 if none was found. *) {$IF LIBAVCODEC_VERSION >= 52000000} // 52.0.0 function avcodec_find_best_pix_fmt(pix_fmt_mask: cint64; src_pix_fmt: TAVPixelFormat; has_alpha: cint; loss_ptr: PCint): cint; cdecl; external av__codec; {$ELSEIF LIBAVCODEC_VERSION < 52022001} function avcodec_find_best_pix_fmt(pix_fmt_mask: cint; src_pix_fmt: TAVPixelFormat; has_alpha: cint; loss_ptr: PCint): cint; cdecl; external av__codec; {$ELSE} function avcodec_find_best_pix_fmt(pix_fmt_mask: cint; src_pix_fmt: TAVPixelFormat; has_alpha: cint; loss_ptr: PCint): TAVPixelFormat; cdecl; external av__codec; {$IFEND} {$IF LIBAVCODEC_VERSION >= 51041000} // 51.41.0 (** * Print in buf the string corresponding to the pixel format with * number pix_fmt, or an header if pix_fmt is negative. * * @param[in] buf the buffer where to write the string * @param[in] buf_size the size of buf * @param[in] pix_fmt the number of the pixel format to print the corresponding info string, or * a negative value to print the corresponding header. * Meaningful values for obtaining a pixel format info vary from 0 to PIX_FMT_NB -1. *) {$IF LIBAVCODEC_VERSION < 52022001} // 52.22.1 procedure avcodec_pix_fmt_string (buf: PAnsiChar; buf_size: cint; pix_fmt: cint); cdecl; external av__codec; {$ELSE} procedure avcodec_pix_fmt_string (buf: PAnsiChar; buf_size: cint; pix_fmt: TAVPixelFormat); cdecl; external av__codec; {$IFEND} {$IFEND} const FF_ALPHA_TRANSP = $0001; {* image has some totally transparent pixels *} FF_ALPHA_SEMI_TRANSP = $0002; {* image has some transparent pixels *} (** * Tell if an image really has transparent alpha values. * @return ored mask of FF_ALPHA_xxx constants *) function img_get_alpha_info (src: {const} PAVPicture; pix_fmt: TAVPixelFormat; width: cint; height: cint): cint; cdecl; external av__codec; {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 (** * convert among pixel formats * @deprecated Use the software scaler (swscale) instead. *) function img_convert (dst: PAVPicture; dst_pix_fmt: TAVPixelFormat; src: {const} PAVPicture; pix_fmt: TAVPixelFormat; width: cint; height: cint): cint; cdecl; external av__codec; deprecated; {$IFEND} (* deinterlace a picture *) (* deinterlace - if not supported return -1 *) function avpicture_deinterlace (dst: PAVPicture; src: {const} PAVPicture; pix_fmt: TAVPixelFormat; width: cint; height: cint): cint; cdecl; external av__codec; {* external high level API *} {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 { var first_avcodec: PAVCodec; external av__codec; } {$IFEND} {$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0 (** * If c is NULL, returns the first registered codec, * if c is non-NULL, returns the next registered codec after c, * or NULL if c is the last one. *) function av_codec_next(c: PAVCodec): PAVCodec; cdecl; external av__codec; {$IFEND} (** * Returns the LIBAVCODEC_VERSION_INT constant. *) function avcodec_version(): cuint; cdecl; external av__codec; {$IF LIBAVCODEC_VERSION < 52008000} // 52.8.0 (* returns LIBAVCODEC_BUILD constant *) function avcodec_build(): cuint; cdecl; external av__codec; deprecated; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52041000} // 52.41.0 (** * Returns the libavcodec build-time configuration. *) function avcodec_configuration(): PAnsiChar; cdecl; external av__codec; (** * Returns the libavcodec license. *) function avcodec_license(): PAnsiChar; cdecl; external av__codec; {$IFEND} (** * Initializes libavcodec. * * @warning This function must be called before any other libavcodec * function. *) procedure avcodec_init(); cdecl; external av__codec; (** * Register the codec codec and initialize libavcodec. * * @see avcodec_init() *) {$IF LIBAVCODEC_VERSION >= 52014000} // 52.14.0 procedure avcodec_register(codec: PAVCodec); cdecl; external av__codec; // Deprecated in favor of avcodec_register. procedure register_avcodec(codec: PAVCodec); cdecl; external av__codec; deprecated; {$ELSEIF LIBAVCODEC_VERSION_MAJOR < 53} procedure register_avcodec(codec: PAVCodec); cdecl; external av__codec; {$IFEND} (** * Finds a registered encoder with a matching codec ID. * * @param id CodecID of the requested encoder * @return An encoder if one was found, NULL otherwise. *) function avcodec_find_encoder(id: TCodecID): PAVCodec; cdecl; external av__codec; (** * Finds a registered encoder with the specified name. * * @param name name of the requested encoder * @return An encoder if one was found, NULL otherwise. *) function avcodec_find_encoder_by_name(name: PAnsiChar): PAVCodec; cdecl; external av__codec; (** * Finds a registered decoder with a matching codec ID. * * @param id CodecID of the requested decoder * @return A decoder if one was found, NULL otherwise. *) function avcodec_find_decoder(id: TCodecID): PAVCodec; cdecl; external av__codec; (** * Finds a registered decoder with the specified name. * * @param name name of the requested decoder * @return A decoder if one was found, NULL otherwise. *) function avcodec_find_decoder_by_name(name: PAnsiChar): PAVCodec; cdecl; external av__codec; procedure avcodec_string(buf: PAnsiChar; buf_size: cint; enc: PAVCodecContext; encode: cint); cdecl; external av__codec; (** * Sets the fields of the given AVCodecContext to default values. * * @param s The AVCodecContext of which the fields should be set to default values. *) procedure avcodec_get_context_defaults(s: PAVCodecContext); cdecl; external av__codec; {$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0 (** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! * we WILL change its arguments and name a few times! *) procedure avcodec_get_context_defaults2(s: PAVCodecContext; ctype: TCodecType); cdecl; external av__codec; {$IFEND} (** * Allocates an AVCodecContext and sets its fields to default values. The * resulting struct can be deallocated by simply calling av_free(). * * @return An AVCodecContext filled with default values or NULL on failure. * @see avcodec_get_context_defaults *) function avcodec_alloc_context(): PAVCodecContext; cdecl; external av__codec; {$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0 (** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! * we WILL change its arguments and name a few times! *) function avcodec_alloc_context2(ctype: TCodecType): PAVCodecContext; cdecl; external av__codec; {$IFEND} (** * Sets the fields of the given AVFrame to default values. * * @param pic The AVFrame of which the fields should be set to default values. *) procedure avcodec_get_frame_defaults (pic: PAVFrame); cdecl; external av__codec; (** * Allocates an AVFrame and sets its fields to default values. The resulting * struct can be deallocated by simply calling av_free(). * * @return An AVFrame filled with default values or NULL on failure. * @see avcodec_get_frame_defaults *) function avcodec_alloc_frame(): PAVFrame; cdecl; external av__codec; function avcodec_default_get_buffer (s: PAVCodecContext; pic: PAVFrame): cint; cdecl; external av__codec; procedure avcodec_default_release_buffer (s: PAVCodecContext; pic: PAVFrame); cdecl; external av__codec; function avcodec_default_reget_buffer (s: PAVCodecContext; pic: PAVFrame): cint; cdecl; external av__codec; procedure avcodec_align_dimensions(s: PAVCodecContext; width: PCint; height: PCint); cdecl; external av__codec; (** * Checks if the given dimension of a picture is valid, meaning that all * bytes of the picture can be addressed with a signed int. * * @param[in] w Width of the picture. * @param[in] h Height of the picture. * @return Zero if valid, a negative value if invalid. *) function avcodec_check_dimensions(av_log_ctx: pointer; w: cuint; h: cuint): cint; cdecl; external av__codec; function avcodec_default_get_format(s: PAVCodecContext; fmt: {const} PAVPixelFormat): TAVPixelFormat; cdecl; external av__codec; function avcodec_thread_init(s: PAVCodecContext; thread_count: cint): cint; cdecl; external av__codec; procedure avcodec_thread_free(s: PAVCodecContext); cdecl; external av__codec; {$IF LIBAVCODEC_VERSION < 52004000} // < 52.4.0 function avcodec_thread_execute(s: PAVCodecContext; func: TExecuteFunc; arg: PPointer; var ret: cint; count: cint): cint; cdecl; external av__codec; {$ELSE} function avcodec_thread_execute(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint; size: cint): cint; cdecl; external av__codec; {$IFEND} {$IF LIBAVCODEC_VERSION < 52004000} // < 52.4.0 function avcodec_default_execute(s: PAVCodecContext; func: TExecuteFunc; arg: PPointer; var ret: cint; count: cint): cint; cdecl; external av__codec; {$ELSE} function avcodec_default_execute(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint; size: cint): cint; cdecl; external av__codec; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52037000} // >= 52.37.0 function avcodec_default_execute2(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint): cint; cdecl; external av__codec; {$IFEND} //FIXME func typedef (** * Initializes the AVCodecContext to use the given AVCodec. Prior to using this * function the context has to be allocated. * * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(), * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for * retrieving a codec. * * @warning This function is not thread safe! * * @code * avcodec_register_all(); * codec = avcodec_find_decoder(CODEC_ID_H264); * if (!codec) * exit(1); * * context = avcodec_alloc_context(); * * if (avcodec_open(context, codec) < 0) * exit(1); * @endcode * * @param avctx The context which will be set up to use the given codec. * @param codec The codec to use within the context. * @return zero on success, a negative value on error * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder *) function avcodec_open(avctx: PAVCodecContext; codec: PAVCodec): cint; cdecl; external av__codec; {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0 (** * @deprecated Use avcodec_decode_audio2 instead. *) function avcodec_decode_audio(avctx: PAVCodecContext; samples: PSmallint; var frame_size_ptr: cint; buf: {const} PByteArray; buf_size: cint): cint; cdecl; external av__codec; {deprecated;} {$IFEND} {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} {$IF LIBAVCODEC_VERSION >= 51030000} // 51.30.0 (** * Decodes an audio frame from buf into samples. * Wrapper function which calls avcodec_decode_audio3. * * @deprecated Use avcodec_decode_audio3 instead. * @param avctx the codec context * @param[out] samples the output buffer, sample type in avctx->sample_fmt * @param[in,out] frame_size_ptr the output buffer size in bytes * @param[in] buf the input buffer * @param[in] buf_size the input buffer size in bytes * @return On error a negative value is returned, otherwise the number of bytes * used or zero if no frame could be decompressed. *) function avcodec_decode_audio2(avctx: PAVCodecContext; samples: PSmallint; var frame_size_ptr: cint; buf: {const} PByteArray; buf_size: cint): cint; cdecl; external av__codec; {deprecated;} {$IFEND} {$IFEND} {$IF LIBAVCODEC_VERSION >= 52025000} // 52.25.0 (** * Decodes the audio frame of size avpkt->size from avpkt->data into samples. * Some decoders may support multiple frames in a single AVPacket, such * decoders would then just decode the first frame. In this case, * avcodec_decode_audio3 has to be called again with an AVPacket that contains * the remaining data in order to decode the second frame etc. * If no frame * could be outputted, frame_size_ptr is zero. Otherwise, it is the * decompressed frame size in bytes. * * @warning You must set frame_size_ptr to the allocated size of the * output buffer before calling avcodec_decode_audio3(). * * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than * the actual read bytes because some optimized bitstream readers read 32 or 64 * bits at once and could read over the end. * * @warning The end of the input buffer avpkt->data should be set to 0 to ensure that * no overreading happens for damaged MPEG streams. * * @note You might have to align the input buffer avpkt->data and output buffer * samples. The alignment requirements depend on the CPU: On some CPUs it isn't * necessary at all, on others it won't work at all if not aligned and on others * * it will work but it will have an impact on performance. * * In practice, avpkt->data should have 4 byte alignment at minimum and * samples should be 16 byte aligned unless the CPU doesn't need it * (AltiVec and SSE do). * * @note Some codecs have a delay between input and output, these need to be * fed with avpkt->data=NULL, avpkt->size=0 at the end to return the remaining frames. * * @param avctx the codec context * @param[out] samples the output buffer * @param[in,out] frame_size_ptr the output buffer size in bytes * @param[in] avpkt The input AVPacket containing the input buffer. * You can create such packet with av_init_packet() and by then setting * data and size, some decoders might in addition need other fields. * All decoders are designed to use the least fields possible though. * @return On error a negative value is returned, otherwise the number of bytes * used or zero if no frame data was decompressed (used) from the input AVPacket. *) function avcodec_decode_audio3(avctx: PAVCodecContext; samples: PSmallint; var frame_size_ptr: cint; avpkt: PAVPacket): cint; cdecl; external av__codec; {$IFEND} {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} (** * Decodes a video frame from buf into picture. * Wrapper function which calls avcodec_decode_video2. * * @deprecated Use avcodec_decode_video2 instead. * @param avctx the codec context * @param[out] picture The AVFrame in which the decoded video frame will be stored. * @param[in] buf the input buffer * @param[in] buf_size the size of the input buffer in bytes * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero. * @return On error a negative value is returned, otherwise the number of bytes * used or zero if no frame could be decompressed. *) function avcodec_decode_video(avctx: PAVCodecContext; picture: PAVFrame; var got_picture_ptr: cint; buf: {const} PByteArray; buf_size: cint): cint; cdecl; external av__codec; {deprecated;} {$IFEND} {$IF LIBAVCODEC_VERSION >= 52025000} // 52.25.0 (** * Decodes the video frame of size avpkt->size from avpkt->data into picture. * Some decoders may support multiple frames in a single AVPacket, such * decoders would then just decode the first frame. * * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than * the actual read bytes because some optimized bitstream readers read 32 or 64 * bits at once and could read over the end. * * @warning The end of the input buffer buf should be set to 0 to ensure that * no overreading happens for damaged MPEG streams. * * @note You might have to align the input buffer avpkt->data. * The alignment requirements depend on the CPU: on some CPUs it isn't * necessary at all, on others it won't work at all if not aligned and on others * it will work but it will have an impact on performance. * * In practice, avpkt->data should have 4 byte alignment at minimum. * * @param avctx the codec context * @param[out] picture The AVFrame in which the decoded video frame will be stored. * @param[in] avpkt The input AVpacket containing the input buffer. * You can create such packet with av_init_packet() and by then setting * data and size, some decoders might in addition need other fields like * flags&PKT_FLAG_KEY. All decoders are designed to use the least * fields possible. * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero. * @return On error a negative value is returned, otherwise the number of bytes * used or zero if no frame could be decompressed. *) function avcodec_decode_video2(avctx: PAVCodecContext; picture: PAVFrame; var got_picture_ptr: cint; avpkt: PAVPacket): cint; cdecl; external av__codec; {$IFEND} {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} (* Decode a subtitle message. Return -1 if error, otherwise return the * number of bytes used. If no subtitle could be decompressed, * got_sub_ptr is zero. Otherwise, the subtitle is stored in*sub. *) function avcodec_decode_subtitle(avctx: PAVCodecContext; sub: PAVSubtitle; var got_sub_ptr: cint; buf: {const} PByteArray; buf_size: cint): cint; cdecl; external av__codec; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52025000} // 52.25.0 (* Decodes a subtitle message. * Returns a negative value on error, otherwise returns the number of bytes used. * If no subtitle could be decompressed, got_sub_ptr is zero. * Otherwise, the subtitle is stored in sub. * * @param avctx the codec context * @param[out] sub The AVSubtitle in which the decoded subtitle will be stored. * @param[in,out] got_sub_ptr Zero if no subtitle could be decompressed, otherwise, it is nonzero. * @param[in] avpkt The input AVPacket containing the input buffer. *) function avcodec_decode_subtitle2(avctx: PAVCodecContext; sub: PAVSubtitle; var got_sub_ptr: cint; avpkt: PAVPacket): cint; cdecl; external av__codec; {$IFEND} function avcodec_parse_frame(avctx: PAVCodecContext; pdata: PPointer; data_size_ptr: PCint; buf: PByteArray; buf_size: cint): cint; cdecl; external av__codec; (** * Encodes an audio frame from samples into buf. * * @note The output buffer should be at least FF_MIN_BUFFER_SIZE bytes large. * However, for PCM audio the user will know how much space is needed * because it depends on the value passed in buf_size as described * below. In that case a lower value can be used. * * @param avctx the codec context * @param[out] buf the output buffer * @param[in] buf_size the output buffer size * @param[in] samples the input buffer containing the samples * The number of samples read from this buffer is frame_size*channels, * both of which are defined in avctx. * For PCM audio the number of samples read from samples is equal to * buf_size * input_sample_size / output_sample_size. * @return On error a negative value is returned, on success zero or the number * of bytes used to encode the data read from the input buffer. *) function avcodec_encode_audio(avctx: PAVCodecContext; buf: PByte; buf_size: cint; samples: {const} PSmallint): cint; cdecl; external av__codec; (** * Encodes a video frame from pict into buf. * The input picture should be * stored using a specific format, namely avctx.pix_fmt. * * @param avctx the codec context * @param[out] buf the output buffer for the bitstream of encoded frame * @param[in] buf_size the size of the output buffer in bytes * @param[in] pict the input picture to encode * @return On error a negative value is returned, on success zero or the number * of bytes used from the output buffer. *) function avcodec_encode_video(avctx: PAVCodecContext; buf: PByte; buf_size: cint; pict: PAVFrame): cint; cdecl; external av__codec; function avcodec_encode_subtitle(avctx: PAVCodecContext; buf: PByteArray; buf_size: cint; sub: {const} PAVSubtitle): cint; cdecl; external av__codec; function avcodec_close(avctx: PAVCodecContext): cint; cdecl; external av__codec; (** * Register all the codecs, parsers and bitstream filters which were enabled at * configuration time. If you do not call this function you can select exactly * which formats you want to support, by using the individual registration * functions. * * @see register_avcodec * @see avcodec_register * @see av_register_codec_parser * @see av_register_bitstream_filter *) procedure avcodec_register_all(); cdecl; external av__codec; (** * Flush buffers, should be called when seeking or when switching to a different stream. *) procedure avcodec_flush_buffers(avctx: PAVCodecContext); cdecl; external av__codec; procedure avcodec_default_free_buffers(s: PAVCodecContext); cdecl; external av__codec; (* misc useful functions *) (** * Returns a single letter to describe the given picture type pict_type. * * @param[in] pict_type the picture type * @return A single character representing the picture type. *) function av_get_pict_type_char(pict_type: cint): AnsiChar; cdecl; external av__codec; (** * Returns codec bits per sample. * * @param[in] codec_id the codec * @return Number of bits per sample or zero if unknown for the given codec. *) function av_get_bits_per_sample(codec_id: TCodecID): cint; cdecl; external av__codec; {$IF LIBAVCODEC_VERSION >= 51041000} // 51.41.0 (** * Returns sample format bits per sample. * * @param[in] sample_fmt the sample format * @return Number of bits per sample or zero if unknown for the given sample format. *) function av_get_bits_per_sample_format(sample_fmt: TSampleFormat): cint; cdecl; external av__codec; {$IFEND} const AV_PARSER_PTS_NB = 4; PARSER_FLAG_COMPLETE_FRAMES = $0001; type {* frame parsing *} PAVCodecParserContext = ^TAVCodecParserContext; PAVCodecParser = ^TAVCodecParser; TAVCodecParserContext = record priv_data: pointer; parser: PAVCodecParser; frame_offset: cint64; (* offset of the current frame *) cur_offset: cint64; (* current offset (incremented by each av_parser_parse()) *) next_frame_offset: cint64; (* offset of the next frame *) (* video info *) pict_type: cint; (* XXX: put it back in AVCodecContext *) (** * This field is used for proper frame duration computation in lavf. * It signals, how much longer the frame duration of the current frame * is compared to normal frame duration. * * frame_duration = (1 + repeat_pict) * time_base * * It is used by codecs like H.264 to display telecined material. *) repeat_pict: cint; (* XXX: put it back in AVCodecContext *) pts: cint64; (* pts of the current frame *) dts: cint64; (* dts of the current frame *) (* private data *) last_pts: cint64; last_dts: cint64; fetch_timestamp: cint; cur_frame_start_index: cint; cur_frame_offset: array [0..AV_PARSER_PTS_NB - 1] of cint64; cur_frame_pts: array [0..AV_PARSER_PTS_NB - 1] of cint64; cur_frame_dts: array [0..AV_PARSER_PTS_NB - 1] of cint64; flags: cint; {$IF LIBAVCODEC_VERSION >= 51040003} // 51.40.3 offset: cint64; ///< byte offset from starting packet start {$IFEND} {$IF LIBAVCODEC_VERSION >= 51057001} // 51.57.1 cur_frame_end: array [0..AV_PARSER_PTS_NB - 1] of cint64; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52016000} // 52.16.0 (*! * Set by parser to 1 for key frames and 0 for non-key frames. * It is initialized to -1, so if the parser doesn't set this flag, * old-style fallback using FF_I_TYPE picture type as key frames * will be used. *) key_frame: cint; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52018000} // 52.18.0 (** * Time difference in stream time base units from the pts of this * packet to the point at which the output from the decoder has converged * independent from the availability of previous frames. That is, the * frames are virtually identical no matter if decoding started from * the very first frame or from this keyframe. * Is AV_NOPTS_VALUE if unknown. * This field is not the display duration of the current frame. * * The purpose of this field is to allow seeking in streams that have no * keyframes in the conventional sense. It corresponds to the * recovery point SEI in H.264 and match_time_delta in NUT. It is also * essential for some types of subtitle streams to ensure that all * subtitles are correctly displayed after seeking. *) convergence_duration: cint64; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52019000} // 52.19.0 // Timestamp generation support: (** * Synchronization point for start of timestamp generation. * * Set to >0 for sync point, 0 for no sync point and <0 for undefined * (default). * * For example, this corresponds to presence of H.264 buffering period * SEI message. *) dts_sync_point: cint; (** * Offset of the current timestamp against last timestamp sync point in * units of AVCodecContext.time_base. * * Set to INT_MIN when dts_sync_point unused. Otherwise, it must * contain a valid timestamp offset. * * Note that the timestamp of sync point has usually a nonzero * dts_ref_dts_delta, which refers to the previous sync point. Offset of * the next frame after timestamp sync point will be usually 1. * * For example, this corresponds to H.264 cpb_removal_delay. *) dts_ref_dts_delta: cint; (** * Presentation delay of current frame in units of AVCodecContext.time_base. * * Set to INT_MIN when dts_sync_point unused. Otherwise, it must * contain valid non-negative timestamp delta (presentation time of a frame * must not lie in the past). * * This delay represents the difference between decoding and presentation * time of the frame. * * For example, this corresponds to H.264 dpb_output_delay. *) pts_dts_delta: cint; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52021000} // 52.21.0 (** * Position of the packet in file. * * Analogous to cur_frame_pts/dts *) cur_frame_pos: array [0..AV_PARSER_PTS_NB - 1] of cint64; (** * Byte position of currently parsed frame in stream. *) pos: cint64; (** * Previous frame byte position. *) last_pos: cint64; {$IFEND} end; TAVCodecParser = record codec_ids: array [0..4] of cint; (* several codec IDs are permitted *) priv_data_size: cint; parser_init: function(s: PAVCodecParserContext): cint; cdecl; parser_parse: function(s: PAVCodecParserContext; avctx: PAVCodecContext; poutbuf: {const} PPointer; poutbuf_size: PCint; buf: {const} PByteArray; buf_size: cint): cint; cdecl; parser_close: procedure(s: PAVCodecParserContext); cdecl; split: function(avctx: PAVCodecContext; buf: {const} PByteArray; buf_size: cint): cint; cdecl; next: PAVCodecParser; end; {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 { var av_first_parser: PAVCodecParser; external av__codec; } {$IFEND} {$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0 function av_parser_next(c: PAVCodecParser): PAVCodecParser; cdecl; external av__codec; {$IFEND} procedure av_register_codec_parser(parser: PAVCodecParser); cdecl; external av__codec; function av_parser_init(codec_id: cint): PAVCodecParserContext; cdecl; external av__codec; {$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53} function av_parser_parse(s: PAVCodecParserContext; avctx: PAVCodecContext; poutbuf: PPointer; poutbuf_size: PCint; buf: {const} PByteArray; buf_size: cint; pts: cint64; dts: cint64): cint; cdecl; external av__codec; deprecated; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52021000} // 52.21.0 (** * Parse a packet. * * @param s parser context. * @param avctx codec context. * @param poutbuf set to pointer to parsed buffer or NULL if not yet finished. * @param poutbuf_size set to size of parsed buffer or zero if not yet finished. * @param buf input buffer. * @param buf_size input length, to signal EOF, this should be 0 (so that the last frame can be output). * @param pts input presentation timestamp. * @param dts input decoding timestamp. * @param pos input byte position in stream. * @return the number of bytes of the input bitstream used. * * Example: * @code * while (in_len) do * begin * len := av_parser_parse2(myparser, AVCodecContext, data, size, * in_data, in_len, * pts, dts, pos); * in_data := in_data + len; * in_len := in_len - len; * * if (size) then * decode_frame(data, size); * end; * @endcode *) function av_parser_parse2(s: PAVCodecParserContext; avctx: PAVCodecContext; poutbuf: PPointer; poutbuf_size: PCint; buf: {const} PByteArray; buf_size: cint; pts: cint64; dts: cint64; pos: cint64): cint; cdecl; external av__codec; {$IFEND} function av_parser_change(s: PAVCodecParserContext; avctx: PAVCodecContext; poutbuf: PPointer; poutbuf_size: PCint; buf: {const} PByteArray; buf_size: cint; keyframe: cint): cint; cdecl; external av__codec; procedure av_parser_close(s: PAVCodecParserContext); cdecl; external av__codec; type PAVBitStreamFilterContext = ^TAVBitStreamFilterContext; PAVBitStreamFilter = ^TAVBitStreamFilter; TAVBitStreamFilterContext = record priv_data: pointer; filter: PAVBitStreamFilter; parser: PAVCodecParserContext; next: PAVBitStreamFilterContext; end; TAVBitStreamFilter = record name: PAnsiChar; priv_data_size: cint; filter: function(bsfc: PAVBitStreamFilterContext; avctx: PAVCodecContext; args: PByteArray; poutbuf: PPointer; poutbuf_size: PCint; buf: PByte; buf_size: cint; keyframe: cint): cint; cdecl; {$IF LIBAVCODEC_VERSION >= 51043000} // 51.43.0 close: procedure(bsfc: PAVBitStreamFilterContext); {$IFEND} next: PAVBitStreamFilter; end; procedure av_register_bitstream_filter(bsf: PAVBitStreamFilter); cdecl; external av__codec; function av_bitstream_filter_init(name: PAnsiChar): PAVBitStreamFilterContext; cdecl; external av__codec; function av_bitstream_filter_filter(bsfc: PAVBitStreamFilterContext; avctx: PAVCodecContext; args: PByteArray; poutbuf: PPointer; poutbuf_size: PCint; buf: PByte; buf_size: cint; keyframe: cint): cint; cdecl; external av__codec; procedure av_bitstream_filter_close(bsf: PAVBitStreamFilterContext); cdecl; external av__codec; {$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0 function av_bitstream_filter_next(f: PAVBitStreamFilter): PAVBitStreamFilter; cdecl; external av__codec; {$IFEND} (* memory *) (** * Reallocates the given block if it is not large enough, otherwise it * does nothing. * * @see av_realloc *) procedure av_fast_realloc(ptr: pointer; size: PCuint; min_size: cuint); cdecl; external av__codec; {$IF LIBAVCODEC_VERSION >= 52025000} // >= 52.25.0 (** * Allocates a buffer, reusing the given one if large enough. * * Contrary to av_fast_realloc the current buffer contents might not be * preserved and on error the old buffer is freed, thus no special * handling to avoid memleaks is necessary. * * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer * @param size size of the buffer *ptr points to * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and * *size 0 if an error occurred. *) procedure av_fast_malloc(ptr: pointer; size: PCuint; min_size: cuint); cdecl; external av__codec; {$IFEND} {$IF LIBAVCODEC_VERSION < 51057000} // 51.57.0 (* for static data only *) (** * Frees all static arrays and resets their pointers to 0. * Call this function to release all statically allocated tables. * * @deprecated. Code which uses av_free_static is broken/misdesigned * and should correctly use static arrays * *) procedure av_free_static(); cdecl; external av__codec; deprecated; (** * Allocation of static arrays. * * @warning Do not use for normal allocation. * * @param[in] size The amount of memory you need in bytes. * @return block of memory of the requested size * @deprecated. Code which uses av_mallocz_static is broken/misdesigned * and should correctly use static arrays *) procedure av_mallocz_static(size: cuint); cdecl; external av__codec; deprecated; {av_malloc_attrib av_alloc_size(1)} {$IFEND} {$IF LIBAVCODEC_VERSION < 51035000} // 51.35.0 procedure av_realloc_static(ptr: pointer; size: cuint); cdecl; external av__codec; {$IFEND} {$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0 (** * Copy image 'src' to 'dst'. *) procedure av_picture_copy(dst: PAVPicture; src: {const} PAVPicture; {$IF LIBAVCODEC_VERSION < 52022001} // 52.22.1 pix_fmt: cint; {$ELSE} pix_fmt: TAVPixelFormat; {$IFEND} width: cint; height: cint); cdecl; external av__codec; (** * Crop image top and left side. *) function av_picture_crop(dst: PAVPicture; src: {const} PAVPicture; {$IF LIBAVCODEC_VERSION < 52022001} // 52.22.1 pix_fmt: cint; {$ELSE} pix_fmt: TAVPixelFormat; {$IFEND} top_band: cint; left_band: cint): cint; cdecl; external av__codec; (** * Pad image. *) function av_picture_pad(dst: PAVPicture; src: {const} PAVPicture; height: cint; width: cint; {$IF LIBAVCODEC_VERSION < 52022001} // 52.22.1 pix_fmt: cint; {$ELSE} pix_fmt: TAVPixelFormat; {$IFEND} padtop: cint; padbottom: cint; padleft: cint; padright: cint; color: PCint): cint; cdecl; external av__codec; {$IFEND} {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 (** * @deprecated Use the software scaler (swscale) instead. *) procedure img_copy(dst: PAVPicture; src: {const} PAVPicture; pix_fmt: TAVPixelFormat; width: cint; height: cint); cdecl; external av__codec; deprecated; (** * @deprecated Use the software scaler (swscale) instead. *) function img_crop(dst: PAVPicture; src: {const} PAVPicture; pix_fmt: TAVPixelFormat; top_band, left_band: cint): cint; cdecl; external av__codec; deprecated; (** * @deprecated Use the software scaler (swscale) instead. *) function img_pad(dst: PAVPicture; src: {const} PAVPicture; height, width: cint; pix_fmt: TAVPixelFormat; padtop, padbottom, padleft, padright: cint; color: PCint): cint; cdecl; external av__codec; deprecated; {$IFEND} function av_xiphlacing(s: PByte; v: cuint): cuint; cdecl; external av__codec; {$IF LIBAVCODEC_VERSION >= 51041000} // 51.41.0 (** * Parses str and put in width_ptr and height_ptr the detected values. * * @return 0 in case of a successful parsing, a negative value otherwise * @param[in] str the string to parse: it has to be a string in the format * x or a valid video frame size abbreviation. * @param[in,out] width_ptr pointer to the variable which will contain the detected * frame width value * @param[in,out] height_ptr pointer to the variable which will contain the detected * frame height value *) function av_parse_video_frame_size(width_ptr: PCint; height_ptr: PCint; str: {const} PAnsiChar): cint; cdecl; external av__codec; (** * Parses str and put in frame_rate the detected values. * * @return 0 in case of a successful parsing, a negative value otherwise * @param[in] str the string to parse: it has to be a string in the format * /, a float number or a valid video rate abbreviation * @param[in,out] frame_rate pointer to the AVRational which will contain the detected * frame rate *) function av_parse_video_frame_rate(frame_rate: PAVRational; str: {const} PAnsiChar): cint; cdecl; external av__codec; {$IFEND} {* error handling *} const {$IFDEF UNIX} ENOENT = ESysENOENT; EIO = ESysEIO; ENOMEM = ESysENOMEM; EINVAL = ESysEINVAL; EDOM = ESysEDOM; ENOSYS = ESysENOSYS; EILSEQ = ESysEILSEQ; EPIPE = ESysEPIPE; {$ELSE} ENOENT = 2; EIO = 5; ENOMEM = 12; EINVAL = 22; EPIPE = 32; // just an assumption. needs to be checked. EDOM = 33; {$IFDEF MSWINDOWS} // Note: we assume that ffmpeg was compiled with MinGW. // This must be changed if DLLs were compiled with cygwin. ENOSYS = 40; // MSVC/MINGW: 40, CYGWIN: 88, LINUX/FPC: 38 EILSEQ = 42; // MSVC/MINGW: 42, CYGWIN: 138, LINUX/FPC: 84 {$ENDIF} {$ENDIF} const {$IF EINVAL > 0} AVERROR_SIGN = -1; {$ELSE} {* Some platforms have E* and errno already negated. *} AVERROR_SIGN = 1; {$IFEND} (* #if EINVAL > 0 #define AVERROR(e) (-(e)) {**< Returns a negative error code from a POSIX error code, to return from library functions. *} #define AVUNERROR(e) (-(e)) {**< Returns a POSIX error code from a library function error return value. *} #else {* Some platforms have E* and errno already negated. *} #define AVERROR(e) (e) #define AVUNERROR(e) (e) #endif *) const AVERROR_UNKNOWN = AVERROR_SIGN * EINVAL; (**< unknown error *) AVERROR_IO = AVERROR_SIGN * EIO; (**< I/O error *) AVERROR_NUMEXPECTED = AVERROR_SIGN * EDOM; (**< Number syntax expected in filename. *) AVERROR_INVALIDDATA = AVERROR_SIGN * EINVAL; (**< invalid data found *) AVERROR_NOMEM = AVERROR_SIGN * ENOMEM; (**< not enough memory *) AVERROR_NOFMT = AVERROR_SIGN * EILSEQ; (**< unknown format *) AVERROR_NOTSUPP = AVERROR_SIGN * ENOSYS; (**< Operation not supported. *) AVERROR_NOENT = AVERROR_SIGN * ENOENT; (**< No such file or directory. *) {$IF LIBAVCODEC_VERSION >= 52017000} // 52.17.0 AVERROR_EOF = AVERROR_SIGN * EPIPE; (**< End of file. *) {$IFEND} // Note: function calls as constant-initializers are invalid //AVERROR_PATCHWELCOME = -MKTAG('P','A','W','E'); {**< Not yet implemented in FFmpeg. Patches welcome. *} AVERROR_PATCHWELCOME = -(ord('P') or (ord('A') shl 8) or (ord('W') shl 16) or (ord('E') shl 24)); {$IF LIBAVCODEC_VERSION >= 52032000} // >= 52.32.0 (** * Logs a generic warning message about a missing feature. This function is * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.) * only, and would normally not be used by applications. * @param[in] avc a pointer to an arbitrary struct of which the first field is * a pointer to an AVClass struct * @param[in] feature string containing the name of the missing feature * @param[in] want_sample indicates if samples are wanted which exhibit this feature. * If want_sample is non-zero, additional verbage will be added to the log * message which tells the user how to report samples to the development * mailing list. *) procedure av_log_missing_feature(avc: Pointer; feature: {const} Pchar; want_sample: cint); cdecl; external av__codec; (** * Logs a generic warning message asking for a sample. This function is * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.) * only, and would normally not be used by applications. * @param[in] avc a pointer to an arbitrary struct of which the first field is * a pointer to an AVClass struct * @param[in] msg string containing an optional message, or NULL if no message *) procedure av_log_ask_for_sample(avc: Pointer; msg: {const} Pchar); cdecl; external av__codec; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52018000} // 52.18.0 (** * Registers the hardware accelerator hwaccel. *) procedure av_register_hwaccel (hwaccel: PAVHWAccel) cdecl; external av__codec; (** * If hwaccel is NULL, returns the first registered hardware accelerator, * if hwaccel is non-NULL, returns the next registered hardware accelerator * after hwaccel, or NULL if hwaccel is the last one. *) function av_hwaccel_next (hwaccel: PAVHWAccel): PAVHWAccel; cdecl; external av__codec; {$IFEND} {$IF LIBAVCODEC_VERSION >= 52030000} // 52.30.0 (** * Lock operation used by lockmgr *) type TAVLockOp = ( AV_LOCK_CREATE, ///< Create a mutex AV_LOCK_OBTAIN, ///< Lock the mutex AV_LOCK_RELEASE, ///< Unlock the mutex AV_LOCK_DESTROY ///< Free mutex resources ); (** * Register a user provided lock manager supporting the operations * specified by AVLockOp. mutex points to a (void) where the * lockmgr should store/get a pointer to a user allocated mutex. It's * NULL upon AV_LOCK_CREATE and != NULL for all other ops. * * @param cb User defined callback. Note: FFmpeg may invoke calls to this * callback during the call to av_lockmgr_register(). * Thus, the application must be prepared to handle that. * If cb is set to NULL the lockmgr will be unregistered. * Also note that during unregistration the previously registered * lockmgr callback may also be invoked. *) // ToDo: Implement and test this //function av_lockmgr_register(cb: function (mutex: pointer; op: TAVLockOp)): cint; // cdecl; external av__codec; {$IFEND} implementation {$IF (LIBAVCODEC_VERSION >= 52025000) and (LIBAVCODEC_VERSION <= 52027000)} // 52.25.0 - 52.27.0 procedure av_free_packet(pkt: PAVPacket);{$IFDEF HASINLINE} inline; {$ENDIF} begin if assigned(pkt) then begin if assigned(pkt^.destruct) then pkt^.destruct(pkt); pkt^.data := NIL; pkt^.size := 0; end; end; {$IFEND} end.