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fpPS4/ffmpeg/libavcodec.pas
Kagamma 594cd56cb6
AvPlayer HLE (#58) 
* Adds some libSceAvPlayer dummy functions, ps4_sceAvPlayerAddSource cache files to 'avplayer_dump' directory

* Its better for languageCode to be array of chars

* SysLogPrefix

* us -> ms

* Adds ffmpeg headers

* Fix compilation

* sceAvPlayerInitEx

* spinlock, proper close ffmpeg stuff

* Refactor + fix

* NextPacket

* ReceiveAudio

* ReceiveVideo

* audio works

* Minor fix

* Minor

* accurate GetTimeInUs

* sceAvPlayerPostInit and sceAvPlayerStop

* Is not GPU Addr err

* Fixing Structure Alignments

* The original timeStamp is listed in ms in the documentation

* Forgotten "not" and disable Exit(False); (Seems to work, need to test)

* Should check patch folder first

* Minor

* test CI

* use parse_filename

* _sceAvPlayerInit, _sceAvPlayerInitEx

* ps4_sceAvPlayerPostInit, _sceAvPlayerAddSource

* fix types

* _sceAvPlayerGetAudioData

* _sceAvPlayerGetVideoDataEx

* _sceAvPlayerStop, _sceAvPlayerClose

* Removed outdated comments + long name

* Use MemChunk instead of a simple Pointer

* fix init value

* convert to utf8

Co-authored-by: Pavel <68122101+red-prig@users.noreply.github.com>
2023-01-17 16:32:47 +03:00

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unit libavcodec;
{$IFDEF FPC}
{$MODE Delphi}
{$ENDIF}
interface
Uses
ffmpeg_types, libavutil;
{$I ffmpeg.inc}
{$REGION 'avcodec.h'}
(*
* Identify the syntax and semantics of the bitstream.
* The principle is roughly:
* Two decoders with the same ID can decode the same streams.
* Two encoders with the same ID can encode compatible streams.
* There may be slight deviations from the principle due to implementation
* details.
*
* If you add a codec ID to this list, add it so that
* 1. no value of an existing codec ID changes (that would break ABI),
* 2. it is as close as possible to similar codecs
*
* After adding new codec IDs, do not forget to add an entry to the codec
* descriptor list and bump libavcodec minor version.
*)
type
pAVCodecID = ^AVCodecID;
AVCodecID = ( //
AV_CODEC_ID_NONE,
(* video codecs *)
AV_CODEC_ID_MPEG1VIDEO, //
AV_CODEC_ID_MPEG2VIDEO, // < preferred ID for MPEG-1/2 video decoding
AV_CODEC_ID_H261, //
AV_CODEC_ID_H263, //
AV_CODEC_ID_RV10, //
AV_CODEC_ID_RV20, //
AV_CODEC_ID_MJPEG, //
AV_CODEC_ID_MJPEGB, //
AV_CODEC_ID_LJPEG, //
AV_CODEC_ID_SP5X, //
AV_CODEC_ID_JPEGLS, //
AV_CODEC_ID_MPEG4, //
AV_CODEC_ID_RAWVIDEO, //
AV_CODEC_ID_MSMPEG4V1, //
AV_CODEC_ID_MSMPEG4V2, //
AV_CODEC_ID_MSMPEG4V3, //
AV_CODEC_ID_WMV1, //
AV_CODEC_ID_WMV2, //
AV_CODEC_ID_H263P, //
AV_CODEC_ID_H263I, //
AV_CODEC_ID_FLV1, //
AV_CODEC_ID_SVQ1, //
AV_CODEC_ID_SVQ3, //
AV_CODEC_ID_DVVIDEO, //
AV_CODEC_ID_HUFFYUV, //
AV_CODEC_ID_CYUV, //
AV_CODEC_ID_H264, //
AV_CODEC_ID_INDEO3, //
AV_CODEC_ID_VP3, //
AV_CODEC_ID_THEORA, //
AV_CODEC_ID_ASV1, //
AV_CODEC_ID_ASV2, //
AV_CODEC_ID_FFV1, //
AV_CODEC_ID_4XM, //
AV_CODEC_ID_VCR1, //
AV_CODEC_ID_CLJR, //
AV_CODEC_ID_MDEC, //
AV_CODEC_ID_ROQ, //
AV_CODEC_ID_INTERPLAY_VIDEO, //
AV_CODEC_ID_XAN_WC3, //
AV_CODEC_ID_XAN_WC4, //
AV_CODEC_ID_RPZA, //
AV_CODEC_ID_CINEPAK, //
AV_CODEC_ID_WS_VQA, //
AV_CODEC_ID_MSRLE, //
AV_CODEC_ID_MSVIDEO1, //
AV_CODEC_ID_IDCIN, //
AV_CODEC_ID_8BPS, //
AV_CODEC_ID_SMC, //
AV_CODEC_ID_FLIC, //
AV_CODEC_ID_TRUEMOTION1, //
AV_CODEC_ID_VMDVIDEO, //
AV_CODEC_ID_MSZH, //
AV_CODEC_ID_ZLIB, //
AV_CODEC_ID_QTRLE, //
AV_CODEC_ID_TSCC, //
AV_CODEC_ID_ULTI, //
AV_CODEC_ID_QDRAW, //
AV_CODEC_ID_VIXL, //
AV_CODEC_ID_QPEG, //
AV_CODEC_ID_PNG, //
AV_CODEC_ID_PPM, //
AV_CODEC_ID_PBM, //
AV_CODEC_ID_PGM, //
AV_CODEC_ID_PGMYUV, //
AV_CODEC_ID_PAM, //
AV_CODEC_ID_FFVHUFF, //
AV_CODEC_ID_RV30, //
AV_CODEC_ID_RV40, //
AV_CODEC_ID_VC1, //
AV_CODEC_ID_WMV3, //
AV_CODEC_ID_LOCO, //
AV_CODEC_ID_WNV1, //
AV_CODEC_ID_AASC, //
AV_CODEC_ID_INDEO2, //
AV_CODEC_ID_FRAPS, //
AV_CODEC_ID_TRUEMOTION2, //
AV_CODEC_ID_BMP, //
AV_CODEC_ID_CSCD, //
AV_CODEC_ID_MMVIDEO, //
AV_CODEC_ID_ZMBV, //
AV_CODEC_ID_AVS, //
AV_CODEC_ID_SMACKVIDEO, //
AV_CODEC_ID_NUV, //
AV_CODEC_ID_KMVC, //
AV_CODEC_ID_FLASHSV, //
AV_CODEC_ID_CAVS, //
AV_CODEC_ID_JPEG2000, //
AV_CODEC_ID_VMNC, //
AV_CODEC_ID_VP5, //
AV_CODEC_ID_VP6, //
AV_CODEC_ID_VP6F, //
AV_CODEC_ID_TARGA, //
AV_CODEC_ID_DSICINVIDEO, //
AV_CODEC_ID_TIERTEXSEQVIDEO, //
AV_CODEC_ID_TIFF, //
AV_CODEC_ID_GIF, //
AV_CODEC_ID_DXA, //
AV_CODEC_ID_DNXHD, //
AV_CODEC_ID_THP, //
AV_CODEC_ID_SGI, //
AV_CODEC_ID_C93, //
AV_CODEC_ID_BETHSOFTVID, //
AV_CODEC_ID_PTX, //
AV_CODEC_ID_TXD, //
AV_CODEC_ID_VP6A, //
AV_CODEC_ID_AMV, //
AV_CODEC_ID_VB, //
AV_CODEC_ID_PCX, //
AV_CODEC_ID_SUNRAST, //
AV_CODEC_ID_INDEO4, //
AV_CODEC_ID_INDEO5, //
AV_CODEC_ID_MIMIC, //
AV_CODEC_ID_RL2, //
AV_CODEC_ID_ESCAPE124, //
AV_CODEC_ID_DIRAC, //
AV_CODEC_ID_BFI, //
AV_CODEC_ID_CMV, //
AV_CODEC_ID_MOTIONPIXELS, //
AV_CODEC_ID_TGV, //
AV_CODEC_ID_TGQ, //
AV_CODEC_ID_TQI, //
AV_CODEC_ID_AURA, //
AV_CODEC_ID_AURA2, //
AV_CODEC_ID_V210X, //
AV_CODEC_ID_TMV, //
AV_CODEC_ID_V210, //
AV_CODEC_ID_DPX, //
AV_CODEC_ID_MAD, //
AV_CODEC_ID_FRWU, //
AV_CODEC_ID_FLASHSV2, //
AV_CODEC_ID_CDGRAPHICS, //
AV_CODEC_ID_R210, //
AV_CODEC_ID_ANM, //
AV_CODEC_ID_BINKVIDEO, //
AV_CODEC_ID_IFF_ILBM, //
// AV_CODEC_ID_IFF_BYTERUN1 = AV_CODEC_ID_IFF_ILBM, //
AV_CODEC_ID_KGV1, //
AV_CODEC_ID_YOP, //
AV_CODEC_ID_VP8, //
AV_CODEC_ID_PICTOR, //
AV_CODEC_ID_ANSI, //
AV_CODEC_ID_A64_MULTI, //
AV_CODEC_ID_A64_MULTI5, //
AV_CODEC_ID_R10K, //
AV_CODEC_ID_MXPEG, //
AV_CODEC_ID_LAGARITH, //
AV_CODEC_ID_PRORES, //
AV_CODEC_ID_JV, //
AV_CODEC_ID_DFA, //
AV_CODEC_ID_WMV3IMAGE, //
AV_CODEC_ID_VC1IMAGE, //
AV_CODEC_ID_UTVIDEO, //
AV_CODEC_ID_BMV_VIDEO, //
AV_CODEC_ID_VBLE, //
AV_CODEC_ID_DXTORY, //
AV_CODEC_ID_V410, //
AV_CODEC_ID_XWD, //
AV_CODEC_ID_CDXL, //
AV_CODEC_ID_XBM, //
AV_CODEC_ID_ZEROCODEC, //
AV_CODEC_ID_MSS1, //
AV_CODEC_ID_MSA1, //
AV_CODEC_ID_TSCC2, //
AV_CODEC_ID_MTS2, //
AV_CODEC_ID_CLLC, //
AV_CODEC_ID_MSS2, //
AV_CODEC_ID_VP9, //
AV_CODEC_ID_AIC, //
AV_CODEC_ID_ESCAPE130, //
AV_CODEC_ID_G2M, //
AV_CODEC_ID_WEBP, //
AV_CODEC_ID_HNM4_VIDEO, //
AV_CODEC_ID_HEVC, //
// AV_CODEC_ID_H265 = AV_CODEC_ID_HEVC, //
AV_CODEC_ID_FIC, //
AV_CODEC_ID_ALIAS_PIX, //
AV_CODEC_ID_BRENDER_PIX, //
AV_CODEC_ID_PAF_VIDEO, //
AV_CODEC_ID_EXR, //
AV_CODEC_ID_VP7, //
AV_CODEC_ID_SANM, //
AV_CODEC_ID_SGIRLE, //
AV_CODEC_ID_MVC1, //
AV_CODEC_ID_MVC2, //
AV_CODEC_ID_HQX, //
AV_CODEC_ID_TDSC, //
AV_CODEC_ID_HQ_HQA, //
AV_CODEC_ID_HAP, //
AV_CODEC_ID_DDS, //
AV_CODEC_ID_DXV, //
AV_CODEC_ID_SCREENPRESSO, //
AV_CODEC_ID_RSCC, //
AV_CODEC_ID_AVS2, //
AV_CODEC_ID_Y41P = $8000, //
AV_CODEC_ID_AVRP, //
AV_CODEC_ID_012V, //
AV_CODEC_ID_AVUI, //
AV_CODEC_ID_AYUV, //
AV_CODEC_ID_TARGA_Y216, //
AV_CODEC_ID_V308, //
AV_CODEC_ID_V408, //
AV_CODEC_ID_YUV4, //
AV_CODEC_ID_AVRN, //
AV_CODEC_ID_CPIA, //
AV_CODEC_ID_XFACE, //
AV_CODEC_ID_SNOW, //
AV_CODEC_ID_SMVJPEG, //
AV_CODEC_ID_APNG, //
AV_CODEC_ID_DAALA, //
AV_CODEC_ID_CFHD, //
AV_CODEC_ID_TRUEMOTION2RT, //
AV_CODEC_ID_M101, //
AV_CODEC_ID_MAGICYUV, //
AV_CODEC_ID_SHEERVIDEO, //
AV_CODEC_ID_YLC, //
AV_CODEC_ID_PSD, //
AV_CODEC_ID_PIXLET, //
AV_CODEC_ID_SPEEDHQ, //
AV_CODEC_ID_FMVC, //
AV_CODEC_ID_SCPR, //
AV_CODEC_ID_CLEARVIDEO, //
AV_CODEC_ID_XPM, //
AV_CODEC_ID_AV1, //
AV_CODEC_ID_BITPACKED, //
AV_CODEC_ID_MSCC, //
AV_CODEC_ID_SRGC, //
AV_CODEC_ID_SVG, //
AV_CODEC_ID_GDV, //
AV_CODEC_ID_FITS, //
AV_CODEC_ID_IMM4, //
AV_CODEC_ID_PROSUMER, //
AV_CODEC_ID_MWSC, //
AV_CODEC_ID_WCMV, //
AV_CODEC_ID_RASC, //
AV_CODEC_ID_HYMT, //
AV_CODEC_ID_ARBC, //
AV_CODEC_ID_AGM, //
AV_CODEC_ID_LSCR, //
AV_CODEC_ID_VP4, //
// AV_CODEC_ID_IMM5, // 4.2.2
(* various PCM "codecs" *)
AV_CODEC_ID_FIRST_AUDIO = $10000, // < A dummy id pointing at the start of audio codecs
AV_CODEC_ID_PCM_S16LE = $10000, //
AV_CODEC_ID_PCM_S16BE, //
AV_CODEC_ID_PCM_U16LE, //
AV_CODEC_ID_PCM_U16BE, //
AV_CODEC_ID_PCM_S8, //
AV_CODEC_ID_PCM_U8, //
AV_CODEC_ID_PCM_MULAW, //
AV_CODEC_ID_PCM_ALAW, //
AV_CODEC_ID_PCM_S32LE, //
AV_CODEC_ID_PCM_S32BE, //
AV_CODEC_ID_PCM_U32LE, //
AV_CODEC_ID_PCM_U32BE, //
AV_CODEC_ID_PCM_S24LE, //
AV_CODEC_ID_PCM_S24BE, //
AV_CODEC_ID_PCM_U24LE, //
AV_CODEC_ID_PCM_U24BE, //
AV_CODEC_ID_PCM_S24DAUD, //
AV_CODEC_ID_PCM_ZORK, //
AV_CODEC_ID_PCM_S16LE_PLANAR, //
AV_CODEC_ID_PCM_DVD, //
AV_CODEC_ID_PCM_F32BE, //
AV_CODEC_ID_PCM_F32LE, //
AV_CODEC_ID_PCM_F64BE, //
AV_CODEC_ID_PCM_F64LE, //
AV_CODEC_ID_PCM_BLURAY, //
AV_CODEC_ID_PCM_LXF, //
AV_CODEC_ID_S302M, //
AV_CODEC_ID_PCM_S8_PLANAR, //
AV_CODEC_ID_PCM_S24LE_PLANAR, //
AV_CODEC_ID_PCM_S32LE_PLANAR, //
AV_CODEC_ID_PCM_S16BE_PLANAR, //
AV_CODEC_ID_PCM_S64LE = $10800, //
AV_CODEC_ID_PCM_S64BE, //
AV_CODEC_ID_PCM_F16LE, //
AV_CODEC_ID_PCM_F24LE, //
AV_CODEC_ID_PCM_VIDC, //
(* various ADPCM codecs *)
AV_CODEC_ID_ADPCM_IMA_QT = $11000, //
AV_CODEC_ID_ADPCM_IMA_WAV, //
AV_CODEC_ID_ADPCM_IMA_DK3, //
AV_CODEC_ID_ADPCM_IMA_DK4, //
AV_CODEC_ID_ADPCM_IMA_WS, //
AV_CODEC_ID_ADPCM_IMA_SMJPEG, //
AV_CODEC_ID_ADPCM_MS, //
AV_CODEC_ID_ADPCM_4XM, //
AV_CODEC_ID_ADPCM_XA, //
AV_CODEC_ID_ADPCM_ADX, //
AV_CODEC_ID_ADPCM_EA, //
AV_CODEC_ID_ADPCM_G726, //
AV_CODEC_ID_ADPCM_CT, //
AV_CODEC_ID_ADPCM_SWF, //
AV_CODEC_ID_ADPCM_YAMAHA, //
AV_CODEC_ID_ADPCM_SBPRO_4, //
AV_CODEC_ID_ADPCM_SBPRO_3, //
AV_CODEC_ID_ADPCM_SBPRO_2, //
AV_CODEC_ID_ADPCM_THP, //
AV_CODEC_ID_ADPCM_IMA_AMV, //
AV_CODEC_ID_ADPCM_EA_R1, //
AV_CODEC_ID_ADPCM_EA_R3, //
AV_CODEC_ID_ADPCM_EA_R2, //
AV_CODEC_ID_ADPCM_IMA_EA_SEAD, //
AV_CODEC_ID_ADPCM_IMA_EA_EACS, //
AV_CODEC_ID_ADPCM_EA_XAS, //
AV_CODEC_ID_ADPCM_EA_MAXIS_XA, //
AV_CODEC_ID_ADPCM_IMA_ISS, //
AV_CODEC_ID_ADPCM_G722, //
AV_CODEC_ID_ADPCM_IMA_APC, //
AV_CODEC_ID_ADPCM_VIMA, //
//
AV_CODEC_ID_ADPCM_AFC = $11800, //
AV_CODEC_ID_ADPCM_IMA_OKI, //
AV_CODEC_ID_ADPCM_DTK, //
AV_CODEC_ID_ADPCM_IMA_RAD, //
AV_CODEC_ID_ADPCM_G726LE, //
AV_CODEC_ID_ADPCM_THP_LE, //
AV_CODEC_ID_ADPCM_PSX, //
AV_CODEC_ID_ADPCM_AICA, //
AV_CODEC_ID_ADPCM_IMA_DAT4, //
AV_CODEC_ID_ADPCM_MTAF, //
AV_CODEC_ID_ADPCM_AGM, //
(* AMR *) //
AV_CODEC_ID_AMR_NB = $12000, //
AV_CODEC_ID_AMR_WB, //
(* RealAudio codecs *) //
AV_CODEC_ID_RA_144 = $13000, //
AV_CODEC_ID_RA_288,
(* various DPCM codecs *)
AV_CODEC_ID_ROQ_DPCM = $14000, //
AV_CODEC_ID_INTERPLAY_DPCM, //
AV_CODEC_ID_XAN_DPCM, //
AV_CODEC_ID_SOL_DPCM, //
AV_CODEC_ID_SDX2_DPCM = $14800, //
AV_CODEC_ID_GREMLIN_DPCM, //
(* audio codecs *)
AV_CODEC_ID_MP2 = $15000, //
AV_CODEC_ID_MP3,
/// < preferred ID for decoding MPEG audio layer 1, 2 or 3
AV_CODEC_ID_AAC, //
AV_CODEC_ID_AC3, //
AV_CODEC_ID_DTS, //
AV_CODEC_ID_VORBIS, //
AV_CODEC_ID_DVAUDIO, //
AV_CODEC_ID_WMAV1, //
AV_CODEC_ID_WMAV2, //
AV_CODEC_ID_MACE3, //
AV_CODEC_ID_MACE6, //
AV_CODEC_ID_VMDAUDIO, //
AV_CODEC_ID_FLAC, //
AV_CODEC_ID_MP3ADU, //
AV_CODEC_ID_MP3ON4, //
AV_CODEC_ID_SHORTEN, //
AV_CODEC_ID_ALAC, //
AV_CODEC_ID_WESTWOOD_SND1, //
AV_CODEC_ID_GSM,
/// < as in Berlin toast format
AV_CODEC_ID_QDM2, //
AV_CODEC_ID_COOK, //
AV_CODEC_ID_TRUESPEECH, //
AV_CODEC_ID_TTA, //
AV_CODEC_ID_SMACKAUDIO, //
AV_CODEC_ID_QCELP, //
AV_CODEC_ID_WAVPACK, //
AV_CODEC_ID_DSICINAUDIO, //
AV_CODEC_ID_IMC, //
AV_CODEC_ID_MUSEPACK7, //
AV_CODEC_ID_MLP, //
AV_CODEC_ID_GSM_MS, (* as found in WAV *)
AV_CODEC_ID_ATRAC3, //
AV_CODEC_ID_APE, //
AV_CODEC_ID_NELLYMOSER, //
AV_CODEC_ID_MUSEPACK8, //
AV_CODEC_ID_SPEEX, //
AV_CODEC_ID_WMAVOICE, //
AV_CODEC_ID_WMAPRO, //
AV_CODEC_ID_WMALOSSLESS, //
AV_CODEC_ID_ATRAC3P, //
AV_CODEC_ID_EAC3, //
AV_CODEC_ID_SIPR, //
AV_CODEC_ID_MP1, //
AV_CODEC_ID_TWINVQ, //
AV_CODEC_ID_TRUEHD, //
AV_CODEC_ID_MP4ALS, //
AV_CODEC_ID_ATRAC1, //
AV_CODEC_ID_BINKAUDIO_RDFT, //
AV_CODEC_ID_BINKAUDIO_DCT, //
AV_CODEC_ID_AAC_LATM, //
AV_CODEC_ID_QDMC, //
AV_CODEC_ID_CELT, //
AV_CODEC_ID_G723_1, //
AV_CODEC_ID_G729, //
AV_CODEC_ID_8SVX_EXP, //
AV_CODEC_ID_8SVX_FIB, //
AV_CODEC_ID_BMV_AUDIO, //
AV_CODEC_ID_RALF, //
AV_CODEC_ID_IAC, //
AV_CODEC_ID_ILBC, //
AV_CODEC_ID_OPUS, //
AV_CODEC_ID_COMFORT_NOISE, //
AV_CODEC_ID_TAK, //
AV_CODEC_ID_METASOUND, //
AV_CODEC_ID_PAF_AUDIO, //
AV_CODEC_ID_ON2AVC, //
AV_CODEC_ID_DSS_SP, //
AV_CODEC_ID_CODEC2, //
AV_CODEC_ID_FFWAVESYNTH = $15800, //
AV_CODEC_ID_SONIC, //
AV_CODEC_ID_SONIC_LS, //
AV_CODEC_ID_EVRC, //
AV_CODEC_ID_SMV, //
AV_CODEC_ID_DSD_LSBF, //
AV_CODEC_ID_DSD_MSBF, //
AV_CODEC_ID_DSD_LSBF_PLANAR, //
AV_CODEC_ID_DSD_MSBF_PLANAR, //
AV_CODEC_ID_4GV, //
AV_CODEC_ID_INTERPLAY_ACM, //
AV_CODEC_ID_XMA1, //
AV_CODEC_ID_XMA2, //
AV_CODEC_ID_DST, //
AV_CODEC_ID_ATRAC3AL, //
AV_CODEC_ID_ATRAC3PAL, //
AV_CODEC_ID_DOLBY_E, //
AV_CODEC_ID_APTX, //
AV_CODEC_ID_APTX_HD, //
AV_CODEC_ID_SBC, //
AV_CODEC_ID_ATRAC9, //
AV_CODEC_ID_HCOM, //
// AV_CODEC_ID_ACELP_KELVIN, // 4.2.2
(* subtitle codecs *) //
AV_CODEC_ID_FIRST_SUBTITLE = $17000,
/// < A dummy ID pointing at the start of subtitle codecs.
AV_CODEC_ID_DVD_SUBTITLE = $17000, //
AV_CODEC_ID_DVB_SUBTITLE, //
AV_CODEC_ID_TEXT,
/// < raw UTF-8 text
AV_CODEC_ID_XSUB, //
AV_CODEC_ID_SSA, //
AV_CODEC_ID_MOV_TEXT, //
AV_CODEC_ID_HDMV_PGS_SUBTITLE, //
AV_CODEC_ID_DVB_TELETEXT, //
AV_CODEC_ID_SRT, //
AV_CODEC_ID_MICRODVD = $17800, //
AV_CODEC_ID_EIA_608, //
AV_CODEC_ID_JACOSUB, //
AV_CODEC_ID_SAMI, //
AV_CODEC_ID_REALTEXT, //
AV_CODEC_ID_STL, //
AV_CODEC_ID_SUBVIEWER1, //
AV_CODEC_ID_SUBVIEWER, //
AV_CODEC_ID_SUBRIP, //
AV_CODEC_ID_WEBVTT, //
AV_CODEC_ID_MPL2, //
AV_CODEC_ID_VPLAYER, //
AV_CODEC_ID_PJS, //
AV_CODEC_ID_ASS, //
AV_CODEC_ID_HDMV_TEXT_SUBTITLE, //
AV_CODEC_ID_TTML, //
AV_CODEC_ID_ARIB_CAPTION, //
(* other specific kind of codecs (generally used for attachments) *)
AV_CODEC_ID_FIRST_UNKNOWN = $18000, // < A dummy ID pointing at the start of various fake codecs.
AV_CODEC_ID_TTF = $18000, //
AV_CODEC_ID_SCTE_35, // < Contain timestamp estimated through PCR of program stream.
// AV_CODEC_ID_EPG, // 4.2.2
AV_CODEC_ID_BINTEXT = $18800, //
AV_CODEC_ID_XBIN, //
AV_CODEC_ID_IDF, //
AV_CODEC_ID_OTF, //
AV_CODEC_ID_SMPTE_KLV, //
AV_CODEC_ID_DVD_NAV, //
AV_CODEC_ID_TIMED_ID3, //
AV_CODEC_ID_BIN_DATA, //
AV_CODEC_ID_MPEG2TS = $20000, (* < _FAKE_ codec to indicate a raw MPEG-2 TS
* stream (only used by libavformat) *)
AV_CODEC_ID_MPEG4SYSTEMS = $20001, (* < _FAKE_ codec to indicate a MPEG-4 Systems
* stream (only used by libavformat) *)
AV_CODEC_ID_FFMETADATA = $21000, // < Dummy codec for streams containing only metadata information.
AV_CODEC_ID_WRAPPED_AVFRAME = $21001 // < Passthrough codec, AVFrames wrapped in AVPacket
);
const
AV_CODEC_ID_IFF_BYTERUN1: AVCodecID = AV_CODEC_ID_IFF_ILBM;
AV_CODEC_ID_H265: AVCodecID = AV_CODEC_ID_HEVC;
(*
* The codec supports this format via the hw_device_ctx interface.
*
* When selecting this format, AVCodecContext.hw_device_ctx should
* have been set to a device of the specified type before calling
* avcodec_open2().
*)
AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX = $01;
(*
* The codec supports this format via the hw_frames_ctx interface.
*
* When selecting this format for a decoder,
* AVCodecContext.hw_frames_ctx should be set to a suitable frames
* context inside the get_format() callback. The frames context
* must have been created on a device of the specified type.
*)
AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX = $02;
(*
* The codec supports this format by some internal method.
*
* This format can be selected without any additional configuration -
* no device or frames context is required.
*)
AV_CODEC_HW_CONFIG_METHOD_INTERNAL = $04;
(*
* The codec supports this format by some ad-hoc method.
*
* Additional settings and/or function calls are required. See the
* codec-specific documentation for details. (Methods requiring
* this sort of configuration are deprecated and others should be
* used in preference.)
*)
AV_CODEC_HW_CONFIG_METHOD_AD_HOC = $08;
(*
* Codec uses only intra compression.
* Video and audio codecs only.
*)
AV_CODEC_PROP_INTRA_ONLY = (1 shl 0);
(*
* Codec supports lossy compression. Audio and video codecs only.
* @note a codec may support both lossy and lossless
* compression modes
*)
AV_CODEC_PROP_LOSSY = (1 shl 1);
(*
* Codec supports lossless compression. Audio and video codecs only.
*)
AV_CODEC_PROP_LOSSLESS = (1 shl 2);
(*
* Codec supports frame reordering. That is, the coded order (the order in which
* the encoded packets are output by the encoders / stored / input to the
* decoders) may be different from the presentation order of the corresponding
* frames.
*
* For codecs that do not have this property set, PTS and DTS should always be
* equal.
*)
AV_CODEC_PROP_REORDER = (1 shl 3);
(*
* Subtitle codec is bitmap based
* Decoded AVSubtitle data can be read from the AVSubtitleRect->pict field.
*)
AV_CODEC_PROP_BITMAP_SUB = (1 shl 16);
(*
* Subtitle codec is text based.
* Decoded AVSubtitle data can be read from the AVSubtitleRect->ass field.
*)
AV_CODEC_PROP_TEXT_SUB = (1 shl 17);
(*
* @ingroup lavc_decoding
* Required number of additionally allocated bytes at the end of the input bitstream for decoding.
* This is mainly needed because some optimized bitstream readers read
* 32 or 64 bit at once and could read over the end.<br>
* Note: If the first 23 bits of the additional bytes are not 0, then damaged
* MPEG bitstreams could cause overread and segfault.
*)
AV_INPUT_BUFFER_PADDING_SIZE = 64;
(*
* @ingroup lavc_encoding
* minimum encoding buffer size
* Used to avoid some checks during header writing.
*)
AV_INPUT_BUFFER_MIN_SIZE = 16384;
(* encoding support
These flags can be passed in AVCodecContext.flags before initialization.
Note: Not everything is supported yet.
*)
(*
* Allow decoders to produce frames with data planes that are not aligned
* to CPU requirements (e.g. due to cropping).
*)
AV_CODEC_FLAG_UNALIGNED = (1 shl 0);
(*
* Use fixed qscale.
*)
AV_CODEC_FLAG_QSCALE = (1 shl 1);
(*
* 4 MV per MB allowed / advanced prediction for H.263.
*)
AV_CODEC_FLAG_4MV = (1 shl 2);
(*
* Output even those frames that might be corrupted.
*)
AV_CODEC_FLAG_OUTPUT_CORRUPT = (1 shl 3);
(*
* Use qpel MC.
*)
AV_CODEC_FLAG_QPEL = (1 shl 4);
(*
* Don't output frames whose parameters differ from first
* decoded frame in stream.
*)
AV_CODEC_FLAG_DROPCHANGED = (1 shl 5);
(*
* Use internal 2pass ratecontrol in first pass mode.
*)
AV_CODEC_FLAG_PASS1 = (1 shl 9);
(*
* Use internal 2pass ratecontrol in second pass mode.
*)
AV_CODEC_FLAG_PASS2 = (1 shl 10);
(*
* loop filter.
*)
AV_CODEC_FLAG_LOOP_FILTER = (1 shl 11);
(*
* Only decode/encode grayscale.
*)
AV_CODEC_FLAG_GRAY = (1 shl 13);
(*
* error[?] variables will be set during encoding.
*)
AV_CODEC_FLAG_PSNR = (1 shl 15);
(*
* Input bitstream might be truncated at a random location
* instead of only at frame boundaries.
*)
AV_CODEC_FLAG_TRUNCATED = (1 shl 16);
(*
* Use interlaced DCT.
*)
AV_CODEC_FLAG_INTERLACED_DCT = (1 shl 18);
(*
* Force low delay.
*)
AV_CODEC_FLAG_LOW_DELAY = (1 shl 19);
(*
* Place global headers in extradata instead of every keyframe.
*)
AV_CODEC_FLAG_GLOBAL_HEADER = (1 shl 22);
(*
* Use only bitexact stuff =(except =(I);DCT);.
*)
AV_CODEC_FLAG_BITEXACT = (1 shl 23);
(* Fx : Flag for H.263+ extra options *)
(*
* H.263 advanced intra coding / MPEG-4 AC prediction
*)
AV_CODEC_FLAG_AC_PRED = (1 shl 24);
(*
* interlaced motion estimation
*)
AV_CODEC_FLAG_INTERLACED_ME = (1 shl 29);
AV_CODEC_FLAG_CLOSED_GOP = (1 shl 31);
(*
* Allow non spec compliant speedup tricks.
*)
AV_CODEC_FLAG2_FAST = (1 shl 0);
(*
* Skip bitstream encoding.
*)
AV_CODEC_FLAG2_NO_OUTPUT = (1 shl 2);
(*
* Place global headers at every keyframe instead of in extradata.
*)
AV_CODEC_FLAG2_LOCAL_HEADER = (1 shl 3);
(*
* timecode is in drop frame format. DEPRECATED!!!!
*)
AV_CODEC_FLAG2_DROP_FRAME_TIMECODE = (1 shl 13)deprecated;
(*
* Input bitstream might be truncated at a packet boundaries
* instead of only at frame boundaries.
*)
AV_CODEC_FLAG2_CHUNKS = (1 shl 15);
(*
* Discard cropping information from SPS.
*)
AV_CODEC_FLAG2_IGNORE_CROP = (1 shl 16);
(*
* Show all frames before the first keyframe
*)
AV_CODEC_FLAG2_SHOW_ALL = (1 shl 22);
(*
* Export motion vectors through frame side data
*)
AV_CODEC_FLAG2_EXPORT_MVS = (1 shl 28);
(*
* Do not skip samples and export skip information as frame side data
*)
AV_CODEC_FLAG2_SKIP_MANUAL = (1 shl 29);
(*
* Do not reset ASS ReadOrder field on flush =(subtitles decoding);
*)
AV_CODEC_FLAG2_RO_FLUSH_NOOP = (1 shl 30);
(* Unsupported options :
* Syntax Arithmetic coding =(SAC);
* Reference Picture Selection
* Independent Segment Decoding *)
(* /Fx *)
(* codec capabilities *)
(*
* Decoder can use draw_horiz_band callback.
*)
AV_CODEC_CAP_DRAW_HORIZ_BAND = (1 shl 0);
(*
* Codec uses get_buffer=(); for allocating buffers and supports custom allocators.
* If not set, it might not use get_buffer=(); at all or use operations that
* assume the buffer was allocated by avcodec_default_get_buffer.
*)
AV_CODEC_CAP_DR1 = (1 shl 1);
AV_CODEC_CAP_TRUNCATED = (1 shl 3);
(*
* Encoder or decoder requires flushing with NULL input at the end in order to
* give the complete and correct output.
*
* NOTE: If this flag is not set, the codec is guaranteed to never be fed with
* with NULL data. The user can still send NULL data to the public encode
* or decode function, but libavcodec will not pass it along to the codec
* unless this flag is set.
*
* Decoders:
* The decoder has a non-zero delay and needs to be fed with avpkt->data=NULL,
* avpkt->size=0 at the end to get the delayed data until the decoder no longer
* returns frames.
*
* Encoders:
* The encoder needs to be fed with NULL data at the end of encoding until the
* encoder no longer returns data.
*
* NOTE: For encoders implementing the AVCodec.encode2=(); function, setting this
* flag also means that the encoder must set the pts and duration for
* each output packet. If this flag is not set, the pts and duration will
* be determined by libavcodec from the input frame.
*)
AV_CODEC_CAP_DELAY = (1 shl 5);
(*
* Codec can be fed a final frame with a smaller size.
* This can be used to prevent truncation of the last audio samples.
*)
AV_CODEC_CAP_SMALL_LAST_FRAME = (1 shl 6);
(*
* 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 carrying 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.
*)
AV_CODEC_CAP_SUBFRAMES = (1 shl 8);
(*
* Codec is experimental and is thus avoided in favor of non experimental
* encoders
*)
AV_CODEC_CAP_EXPERIMENTAL = (1 shl 9);
(*
* Codec should fill in channel configuration and samplerate instead of container
*)
AV_CODEC_CAP_CHANNEL_CONF = (1 shl 10);
(*
* Codec supports frame-level multithreading.
*)
AV_CODEC_CAP_FRAME_THREADS = (1 shl 12);
(*
* Codec supports slice-based =(or partition-based); multithreading.
*)
AV_CODEC_CAP_SLICE_THREADS = (1 shl 13);
(*
* Codec supports changed parameters at any point.
*)
AV_CODEC_CAP_PARAM_CHANGE = (1 shl 14);
(*
* Codec supports avctx->thread_count == 0 =(auto);.
*)
AV_CODEC_CAP_AUTO_THREADS = (1 shl 15);
(*
* Audio encoder supports receiving a different number of samples in each call.
*)
AV_CODEC_CAP_VARIABLE_FRAME_SIZE = (1 shl 16);
(*
* Decoder is not a preferred choice for probing.
* This indicates that the decoder is not a good choice for probing.
* It could for example be an expensive to spin up hardware decoder,
* or it could simply not provide a lot of useful information about
* the stream.
* A decoder marked with this flag should only be used as last resort
* choice for probing.
*)
AV_CODEC_CAP_AVOID_PROBING = (1 shl 17);
(*
* Codec is intra only.
*)
AV_CODEC_CAP_INTRA_ONLY = $40000000;
(*
* Codec is lossless.
*)
AV_CODEC_CAP_LOSSLESS = $80000000;
(*
* Codec is backed by a hardware implementation. Typically used to
* identify a non-hwaccel hardware decoder. For information about hwaccels, use
* avcodec_get_hw_config=(); instead.
*)
AV_CODEC_CAP_HARDWARE = (1 shl 18);
(*
* Codec is potentially backed by a hardware implementation, but not
* necessarily. This is used instead of AV_CODEC_CAP_HARDWARE, if the
* implementation provides some sort of internal fallback.
*)
AV_CODEC_CAP_HYBRID = (1 shl 19);
(*
* This codec takes the reordered_opaque field from input AVFrames
* and returns it in the corresponding field in AVCodecContext after
* encoding.
*)
AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE = (1 shl 20);
const
(*
* HWAccel is experimental and is thus avoided in favor of non experimental
* codecs
*)
AV_HWACCEL_CODEC_CAP_EXPERIMENTAL = $0200;
(*
* Hardware acceleration should be used for decoding even if the codec level
* used is unknown or higher than the maximum supported level reported by the
* hardware driver.
*
* It's generally a good idea to pass this flag unless you have a specific
* reason not to, as hardware tends to under-report supported levels.
*)
AV_HWACCEL_FLAG_IGNORE_LEVEL = (1 shl 0);
(*
* Hardware acceleration can output YUV pixel formats with a different chroma
* sampling than 4:2:0 and/or other than 8 bits per component.
*)
AV_HWACCEL_FLAG_ALLOW_HIGH_DEPTH = (1 shl 1);
(*
* Hardware acceleration should still be attempted for decoding when the
* codec profile does not match the reported capabilities of the hardware.
*
* For example, this can be used to try to decode baseline profile H.264
* streams in hardware - it will often succeed, because many streams marked
* as baseline profile actually conform to constrained baseline profile.
*
* @warning If the stream is actually not supported then the behaviour is
* undefined, and may include returning entirely incorrect output
* while indicating success.
*)
AV_HWACCEL_FLAG_ALLOW_PROFILE_MISMATCH = (1 shl 2);
type
(*
* AVProfile.
*)
AVProfile = record
profile: int;
name: pAnsiChar; // < short name for the profile
end;
pAVProfile = ^AVProfile;
(*
* This struct describes the properties of a single codec described by an
* AVCodecID.
* @see avcodec_descriptor_get()
*)
pAVCodecDescriptor = ^AVCodecDescriptor;
AVCodecDescriptor = record
id: AVCodecID;
_type: AVMediaType;
(*
* Name of the codec described by this descriptor. It is non-empty and
* unique for each codec descriptor. It should contain alphanumeric
* characters and '_' only.
*)
name: pAnsiChar;
(*
* A more descriptive name for this codec. May be NULL.
*)
long_name: pAnsiChar;
(*
* Codec properties, a combination of AV_CODEC_PROP_* flags.
*)
props: int;
(*
* MIME type(s) associated with the codec.
* May be NULL; if not, a NULL-terminated array of MIME types.
* The first item is always non-NULL and is the preferred MIME type.
*)
// const char *const *mime_types;
mime_types: PPAnsiChar;
(*
* If non-NULL, an array of profiles recognized for this codec.
* Terminated with FF_PROFILE_UNKNOWN.
*)
// const struct AVProfile *profiles;
profiles: pAVProfile;
end;
// AVHWDeviceType = (
// AV_HWDEVICE_TYPE_VDPAU,
// AV_HWDEVICE_TYPE_CUDA,
// AV_HWDEVICE_TYPE_VAAPI,
// AV_HWDEVICE_TYPE_DXVA2,
// AV_HWDEVICE_TYPE_QSV,
// AV_HWDEVICE_TYPE_VIDEOTOOLBOX,
// AV_HWDEVICE_TYPE_NONE,
// AV_HWDEVICE_TYPE_D3D11VA,
// AV_HWDEVICE_TYPE_DRM
// );
pAVCodecHWConfig = ^AVCodecHWConfig;
AVCodecHWConfig = record
(*
* A hardware pixel format which the codec can use.
*)
pix_fmt: AVPixelFormat;
(*
* Bit set of AV_CODEC_HW_CONFIG_METHOD_* flags, describing the possible
* setup methods which can be used with this configuration.
*)
methods: int;
(*
* The device type associated with the configuration.
*
* Must be set for AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX and
* AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX, otherwise unused.
*)
device_type: AVHWDeviceType;
end;
(*
* @ingroup lavc_decoding
*)
AVDiscard = ( //
(* 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_NONINTRA = 24, // < discard all non intra frames
AVDISCARD_NONKEY = 32, // < discard all frames except keyframes
AVDISCARD_ALL = 48 // < discard all
);
AVAudioServiceType = ( //
AV_AUDIO_SERVICE_TYPE_MAIN = 0, AV_AUDIO_SERVICE_TYPE_EFFECTS = 1, AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED = 2, AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED = 3,
AV_AUDIO_SERVICE_TYPE_DIALOGUE = 4, AV_AUDIO_SERVICE_TYPE_COMMENTARY = 5, AV_AUDIO_SERVICE_TYPE_EMERGENCY = 6, AV_AUDIO_SERVICE_TYPE_VOICE_OVER = 7,
AV_AUDIO_SERVICE_TYPE_KARAOKE = 8, AV_AUDIO_SERVICE_TYPE_NB
// < Not part of ABI
);
(*
* @ingroup lavc_encoding
*)
RcOverride = record
start_frame: int;
end_frame: int;
qscale: int; // If this is 0 then quality_factor will be used instead.
quality_factor: float;
end;
pRcOverride = ^RcOverride;
(*
* Pan Scan area.
* This specifies the area which should be displayed.
* Note there may be multiple such areas for one frame.
*)
AVPanScan = record
(*
* id
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*)
id: int;
(*
* width and height in 1/16 pel
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*)
width: int;
height: int;
(*
* 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, 0 .. 1] of int16_t;
end;
(*
* This structure describes the bitrate properties of an encoded bitstream. It
* roughly corresponds to a subset the VBV parameters for MPEG-2 or HRD
* parameters for H.264/HEVC.
*)
pAVCPBProperties = ^AVCPBProperties;
AVCPBProperties = record
(*
* Maximum bitrate of the stream, in bits per second.
* Zero if unknown or unspecified.
*)
{$IFDEF FF_API_UNSANITIZED_BITRATES}
max_bitrate: int;
{$ELSE}
max_bitrate: int64_t;
{$ENDIF}
(*
* Minimum bitrate of the stream, in bits per second.
* Zero if unknown or unspecified.
*)
{$IFDEF FF_API_UNSANITIZED_BITRATES}
min_bitrate: int;
{$ELSE}
min_bitrate: int64_t;
{$ENDIF}
(*
* Average bitrate of the stream, in bits per second.
* Zero if unknown or unspecified.
*)
{$IFDEF FF_API_UNSANITIZED_BITRATES}
avg_bitrate: int;
{$ELSE}
avg_bitrate: int64_t;
{$ENDIF}
(*
* The size of the buffer to which the ratecontrol is applied, in bits.
* Zero if unknown or unspecified.
*)
buffer_size: int;
(*
* The delay between the time the packet this structure is associated with
* is received and the time when it should be decoded, in periods of a 27MHz
* clock.
*
* UINT64_MAX when unknown or unspecified.
*)
vbv_delay: uint64_t;
end;
const
(*
* The decoder will keep a reference to the frame and may reuse it later.
*)
AV_GET_BUFFER_FLAG_REF = (1 shl 0);
AV_PKT_FLAG_KEY = $0001; // < The packet contains a keyframe
AV_PKT_FLAG_CORRUPT = $0002; // < The packet content is corrupted
(*
* Flag is used to discard packets which are required to maintain valid
* decoder state but are not required for output and should be dropped
* after decoding.
* *)
AV_PKT_FLAG_DISCARD = $0004;
(*
* The packet comes from a trusted source.
*
* Otherwise-unsafe constructs such as arbitrary pointers to data
* outside the packet may be followed.
*)
AV_PKT_FLAG_TRUSTED = $0008;
(*
* Flag is used to indicate packets that contain frames that can
* be discarded by the decoder. I.e. Non-reference frames.
*)
AV_PKT_FLAG_DISPOSABLE = $0010;
// AVCodecContext -> int compression_level;
FF_COMPRESSION_DEFAULT = -1;
{$IFDEF FF_API_PRIVATE_OPT}
// AVCodecContext -> int prediction_method;
FF_PRED_LEFT = 0;
FF_PRED_PLANE = 1;
FF_PRED_MEDIAN = 2;
{$ENDIF}
// AVCodecContext -> int ildct_cmp;
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_MEDIAN_SAD = 15;
FF_CMP_CHROMA = 256;
// AVCodecContext -> slice_flags:int;
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 (MPEG-2 field pics)
SLICE_FLAG_ALLOW_PLANE = $0004; // < allow draw_horiz_band() with 1 component at a time (SVQ1)
// AVCodecContext -> int mb_decision;
FF_MB_DECISION_SIMPLE = 0; // < uses mb_cmp
FF_MB_DECISION_BITS = 1; // < chooses the one which needs the fewest bits
FF_MB_DECISION_RD = 2; // < rate distortion
{$IFDEF FF_API_CODER_TYPE}
// AVCodecContext -> int coder_type;
FF_CODER_TYPE_VLC = 0;
FF_CODER_TYPE_AC = 1;
FF_CODER_TYPE_RAW = 2;
FF_CODER_TYPE_RLE = 3;
{$ENDIF}
// AVCodecContext -> int workaround_bugs;
FF_BUG_AUTODETECT = 1; // < autodetection
FF_BUG_XVID_ILACE = 4;
FF_BUG_UMP4 = 8;
FF_BUG_NO_PADDING = 16;
FF_BUG_AMV = 32;
FF_BUG_QPEL_CHROMA = 64;
FF_BUG_STD_QPEL = 128;
FF_BUG_QPEL_CHROMA2 = 256;
FF_BUG_DIRECT_BLOCKSIZE = 512;
FF_BUG_EDGE = 1024;
FF_BUG_HPEL_CHROMA = 2048;
FF_BUG_DC_CLIP = 4096;
FF_BUG_MS = 8192; // < Work around various bugs in Microsoft's broken decoders.
FF_BUG_TRUNCATED = 16384;
FF_BUG_IEDGE = 32768;
// AVCodecContext -> int strict_std_compliance;
FF_COMPLIANCE_VERY_STRICT = 2; // < Strictly conform to an older more strict version of the spec or reference software.
FF_COMPLIANCE_STRICT = 1; // < Strictly conform to all the things in the spec no matter what consequences.
FF_COMPLIANCE_NORMAL = 0;
FF_COMPLIANCE_UNOFFICIAL = -1; // < Allow unofficial extensions
FF_COMPLIANCE_EXPERIMENTAL = -2; // < Allow nonstandardized experimental things.
// AVCodecContext -> error_concealment:int;
FF_EC_GUESS_MVS = 1;
FF_EC_DEBLOCK = 2;
FF_EC_FAVOR_INTER = 256;
// AVCodecContext -> debug:int;
FF_DEBUG_PICT_INFO = 1;
FF_DEBUG_RC = 2;
FF_DEBUG_BITSTREAM = 4;
FF_DEBUG_MB_TYPE = 8;
FF_DEBUG_QP = 16;
{$IFDEF FF_API_DEBUG_MV}
(*
* @deprecated this option does nothing
*)
FF_DEBUG_MV = 32 deprecated;
{$ENDIF}
FF_DEBUG_DCT_COEFF = $00000040;
FF_DEBUG_SKIP = $00000080;
FF_DEBUG_STARTCODE = $00000100;
FF_DEBUG_ER = $00000400;
FF_DEBUG_MMCO = $00000800;
FF_DEBUG_BUGS = $00001000;
{$IFDEF FF_API_DEBUG_MV}
FF_DEBUG_VIS_QP = $00002000;
FF_DEBUG_VIS_MB_TYPE = $00004000;
{$ENDIF}
FF_DEBUG_BUFFERS = $00008000;
FF_DEBUG_THREADS = $00010000;
FF_DEBUG_GREEN_MD = $00800000;
FF_DEBUG_NOMC = $01000000;
{$IFDEF FF_API_DEBUG_MV}
(*
* debug
* - encoding: Set by user.
* - decoding: Set by user.
*)
// AVCodecContext -> int debug_mv;
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 = $00000004; // visualize backward predicted MVs of B-frames
{$ENDIF}
// AVCodecContext ->err_recognition:int;
(*
* Verify checksums embedded in the bitstream (could be of either encoded or
* decoded data, depending on the codec) and print an error message on mismatch.
* If AV_EF_EXPLODE is also set, a mismatching checksum will result in the
* decoder returning an error.
*)
AV_EF_CRCCHECK = (1 shl 0);
AV_EF_BITSTREAM = (1 shl 1); // < detect bitstream specification deviations
AV_EF_BUFFER = (1 shl 2); // < detect improper bitstream length
AV_EF_EXPLODE = (1 shl 3); // < abort decoding on minor error detection
AV_EF_IGNORE_ERR = (1 shl 15); // < ignore errors and continue
AV_EF_CAREFUL = (1 shl 16);
// < consider things that violate the spec, are fast to calculate and have not been seen in the wild as errors
AV_EF_COMPLIANT = (1 shl 17); // < consider all spec non compliances as errors
AV_EF_AGGRESSIVE = (1 shl 18); // < consider things that a sane encoder should not do as an error
// AVCodecContext ->int dct_algo;
FF_DCT_AUTO = 0;
FF_DCT_FASTINT = 1;
FF_DCT_INT = 2;
FF_DCT_MMX = 3;
FF_DCT_ALTIVEC = 5;
FF_DCT_FAAN = 6;
// AVCodecContext -> int idct_algo;
FF_IDCT_AUTO = 0;
FF_IDCT_INT = 1;
FF_IDCT_SIMPLE = 2;
FF_IDCT_SIMPLEMMX = 3;
FF_IDCT_ARM = 7;
FF_IDCT_ALTIVEC = 8;
FF_IDCT_SIMPLEARM = 10;
FF_IDCT_XVID = 14;
FF_IDCT_SIMPLEARMV5TE = 16;
FF_IDCT_SIMPLEARMV6 = 17;
FF_IDCT_FAAN = 20;
FF_IDCT_SIMPLENEON = 22;
FF_IDCT_NONE = 24; (* Used by XvMC to extract IDCT coefficients with FF_IDCT_PERM_NONE *)
FF_IDCT_SIMPLEAUTO = 128;
// AVCodecContext -> int thread_type;
FF_THREAD_FRAME = 1; // < Decode more than one frame at once
FF_THREAD_SLICE = 2; // < Decode more than one part of a single frame at once
// AVCodecContext -> int profile;
FF_PROFILE_UNKNOWN = -99;
FF_PROFILE_RESERVED = -100;
FF_PROFILE_AAC_MAIN = 0;
FF_PROFILE_AAC_LOW = 1;
FF_PROFILE_AAC_SSR = 2;
FF_PROFILE_AAC_LTP = 3;
FF_PROFILE_AAC_HE = 4;
FF_PROFILE_AAC_HE_V2 = 28;
FF_PROFILE_AAC_LD = 22;
FF_PROFILE_AAC_ELD = 38;
FF_PROFILE_MPEG2_AAC_LOW = 128;
FF_PROFILE_MPEG2_AAC_HE = 131;
FF_PROFILE_DNXHD = 0;
FF_PROFILE_DNXHR_LB = 1;
FF_PROFILE_DNXHR_SQ = 2;
FF_PROFILE_DNXHR_HQ = 3;
FF_PROFILE_DNXHR_HQX = 4;
FF_PROFILE_DNXHR_444 = 5;
FF_PROFILE_DTS = 20;
FF_PROFILE_DTS_ES = 30;
FF_PROFILE_DTS_96_24 = 40;
FF_PROFILE_DTS_HD_HRA = 50;
FF_PROFILE_DTS_HD_MA = 60;
FF_PROFILE_DTS_EXPRESS = 70;
FF_PROFILE_MPEG2_422 = 0;
FF_PROFILE_MPEG2_HIGH = 1;
FF_PROFILE_MPEG2_SS = 2;
FF_PROFILE_MPEG2_SNR_SCALABLE = 3;
FF_PROFILE_MPEG2_MAIN = 4;
FF_PROFILE_MPEG2_SIMPLE = 5;
FF_PROFILE_H264_CONSTRAINED = (1 shl 9); // 8+1; constraint_set1_flag
FF_PROFILE_H264_INTRA = (1 shl 11); // 8+3; constraint_set3_flag
FF_PROFILE_H264_BASELINE = 66;
FF_PROFILE_H264_CONSTRAINED_BASELINE = (66 or FF_PROFILE_H264_CONSTRAINED);
FF_PROFILE_H264_MAIN = 77;
FF_PROFILE_H264_EXTENDED = 88;
FF_PROFILE_H264_HIGH = 100;
FF_PROFILE_H264_HIGH_10 = 110;
FF_PROFILE_H264_HIGH_10_INTRA = (110 or FF_PROFILE_H264_INTRA);
FF_PROFILE_H264_MULTIVIEW_HIGH = 118;
FF_PROFILE_H264_HIGH_422 = 122;
FF_PROFILE_H264_HIGH_422_INTRA = (122 or FF_PROFILE_H264_INTRA);
FF_PROFILE_H264_STEREO_HIGH = 128;
FF_PROFILE_H264_HIGH_444 = 144;
FF_PROFILE_H264_HIGH_444_PREDICTIVE = 244;
FF_PROFILE_H264_HIGH_444_INTRA = (244 or FF_PROFILE_H264_INTRA);
FF_PROFILE_H264_CAVLC_444 = 44;
FF_PROFILE_VC1_SIMPLE = 0;
FF_PROFILE_VC1_MAIN = 1;
FF_PROFILE_VC1_COMPLEX = 2;
FF_PROFILE_VC1_ADVANCED = 3;
FF_PROFILE_MPEG4_SIMPLE = 0;
FF_PROFILE_MPEG4_SIMPLE_SCALABLE = 1;
FF_PROFILE_MPEG4_CORE = 2;
FF_PROFILE_MPEG4_MAIN = 3;
FF_PROFILE_MPEG4_N_BIT = 4;
FF_PROFILE_MPEG4_SCALABLE_TEXTURE = 5;
FF_PROFILE_MPEG4_SIMPLE_FACE_ANIMATION = 6;
FF_PROFILE_MPEG4_BASIC_ANIMATED_TEXTURE = 7;
FF_PROFILE_MPEG4_HYBRID = 8;
FF_PROFILE_MPEG4_ADVANCED_REAL_TIME = 9;
FF_PROFILE_MPEG4_CORE_SCALABLE = 10;
FF_PROFILE_MPEG4_ADVANCED_CODING = 11;
FF_PROFILE_MPEG4_ADVANCED_CORE = 12;
FF_PROFILE_MPEG4_ADVANCED_SCALABLE_TEXTURE = 13;
FF_PROFILE_MPEG4_SIMPLE_STUDIO = 14;
FF_PROFILE_MPEG4_ADVANCED_SIMPLE = 15;
FF_PROFILE_JPEG2000_CSTREAM_RESTRICTION_0 = 1;
FF_PROFILE_JPEG2000_CSTREAM_RESTRICTION_1 = 2;
FF_PROFILE_JPEG2000_CSTREAM_NO_RESTRICTION = 32768;
FF_PROFILE_JPEG2000_DCINEMA_2K = 3;
FF_PROFILE_JPEG2000_DCINEMA_4K = 4;
FF_PROFILE_VP9_0 = 0;
FF_PROFILE_VP9_1 = 1;
FF_PROFILE_VP9_2 = 2;
FF_PROFILE_VP9_3 = 3;
FF_PROFILE_HEVC_MAIN = 1;
FF_PROFILE_HEVC_MAIN_10 = 2;
FF_PROFILE_HEVC_MAIN_STILL_PICTURE = 3;
FF_PROFILE_HEVC_REXT = 4;
FF_PROFILE_AV1_MAIN = 0;
FF_PROFILE_AV1_HIGH = 1;
FF_PROFILE_AV1_PROFESSIONAL = 2;
FF_PROFILE_MJPEG_HUFFMAN_BASELINE_DCT = $C0;
FF_PROFILE_MJPEG_HUFFMAN_EXTENDED_SEQUENTIAL_DCT = $C1;
FF_PROFILE_MJPEG_HUFFMAN_PROGRESSIVE_DCT = $C2;
FF_PROFILE_MJPEG_HUFFMAN_LOSSLESS = $C3;
FF_PROFILE_MJPEG_JPEG_LS = $F7;
FF_PROFILE_SBC_MSBC = 1;
FF_PROFILE_PRORES_PROXY = 0;
FF_PROFILE_PRORES_LT = 1;
FF_PROFILE_PRORES_STANDARD = 2;
FF_PROFILE_PRORES_HQ = 3;
FF_PROFILE_PRORES_4444 = 4;
FF_PROFILE_PRORES_XQ = 5;
FF_PROFILE_ARIB_PROFILE_A = 0;
FF_PROFILE_ARIB_PROFILE_C = 1;
(*
* level
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*)
// AVCodecContext ->int level;
FF_LEVEL_UNKNOWN = -99;
// AVCodecContext -> int sub_charenc_mode;
FF_SUB_CHARENC_MODE_DO_NOTHING = -1;
// < do nothing (demuxer outputs a stream supposed to be already in UTF-8, or the codec is bitmap for instance)
FF_SUB_CHARENC_MODE_AUTOMATIC = 0; // < libavcodec will select the mode itself
FF_SUB_CHARENC_MODE_PRE_DECODER = 1;
// < the AVPacket data needs to be recoded to UTF-8 before being fed to the decoder, requires iconv
FF_SUB_CHARENC_MODE_IGNORE = 2; // < neither convert the subtitles, nor check them for valid UTF-8
// AVCodecContext -> unsigned properties;
FF_CODEC_PROPERTY_LOSSLESS = $00000001;
FF_CODEC_PROPERTY_CLOSED_CAPTIONS = $00000002;
// AVCodecContext -> int sub_text_format;
FF_SUB_TEXT_FMT_ASS = 0;
{$IFDEF FF_API_ASS_TIMING}
FF_SUB_TEXT_FMT_ASS_WITH_TIMINGS = 1;
{$ENDIF}
AV_SUBTITLE_FLAG_FORCED = $00000001;
type
(*
* @defgroup lavc_packet AVPacket
*
* Types and functions for working with AVPacket.
* @{
*)
AVPacketSideDataType = ( //
(*
* An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE
* bytes worth of palette. This side data signals that a new palette is
* present.
*)
AV_PKT_DATA_PALETTE,
(*
* The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format
* that the extradata buffer was changed and the receiving side should
* act upon it appropriately. The new extradata is embedded in the side
* data buffer and should be immediately used for processing the current
* frame or packet.
*)
AV_PKT_DATA_NEW_EXTRADATA,
(*
* An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
* @code
* u32le param_flags
* if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT)
* s32le channel_count
* if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT)
* u64le channel_layout
* if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE)
* s32le sample_rate
* if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS)
* s32le width
* s32le height
* @endcode
*)
AV_PKT_DATA_PARAM_CHANGE,
(*
* An AV_PKT_DATA_H263_MB_INFO side data packet contains a number of
* structures with info about macroblocks relevant to splitting the
* packet into smaller packets on macroblock edges (e.g. as for RFC 2190).
* That is, it does not necessarily contain info about all macroblocks,
* as long as the distance between macroblocks in the info is smaller
* than the target payload size.
* Each MB info structure is 12 bytes, and is laid out as follows:
* @code
* u32le bit offset from the start of the packet
* u8 current quantizer at the start of the macroblock
* u8 GOB number
* u16le macroblock address within the GOB
* u8 horizontal MV predictor
* u8 vertical MV predictor
* u8 horizontal MV predictor for block number 3
* u8 vertical MV predictor for block number 3
* @endcode
*)
AV_PKT_DATA_H263_MB_INFO,
(*
* This side data should be associated with an audio stream and contains
* ReplayGain information in form of the AVReplayGain struct.
*)
AV_PKT_DATA_REPLAYGAIN,
(*
* This side data contains a 3x3 transformation matrix describing an affine
* transformation that needs to be applied to the decoded video frames for
* correct presentation.
*
* See libavutil/display.h for a detailed description of the data.
*)
AV_PKT_DATA_DISPLAYMATRIX,
(*
* This side data should be associated with a video stream and contains
* Stereoscopic 3D information in form of the AVStereo3D struct.
*)
AV_PKT_DATA_STEREO3D,
(*
* This side data should be associated with an audio stream and corresponds
* to enum AVAudioServiceType.
*)
AV_PKT_DATA_AUDIO_SERVICE_TYPE,
(*
* This side data contains quality related information from the encoder.
* @code
* u32le quality factor of the compressed frame. Allowed range is between 1 (good) and FF_LAMBDA_MAX (bad).
* u8 picture type
* u8 error count
* u16 reserved
* u64le[error count] sum of squared differences between encoder in and output
* @endcode
*)
AV_PKT_DATA_QUALITY_STATS,
(*
* This side data contains an integer value representing the stream index
* of a "fallback" track. A fallback track indicates an alternate
* track to use when the current track can not be decoded for some reason.
* e.g. no decoder available for codec.
*)
AV_PKT_DATA_FALLBACK_TRACK,
(*
* This side data corresponds to the AVCPBProperties struct.
*)
AV_PKT_DATA_CPB_PROPERTIES,
(*
* Recommmends skipping the specified number of samples
* @code
* u32le number of samples to skip from start of this packet
* u32le number of samples to skip from end of this packet
* u8 reason for start skip
* u8 reason for end skip (0=padding silence, 1=convergence)
* @endcode
*)
AV_PKT_DATA_SKIP_SAMPLES,
(*
* An AV_PKT_DATA_JP_DUALMONO side data packet indicates that
* the packet may contain "dual mono" audio specific to Japanese DTV
* and if it is true, recommends only the selected channel to be used.
* @code
* u8 selected channels (0=mail/left, 1=sub/right, 2=both)
* @endcode
*)
AV_PKT_DATA_JP_DUALMONO,
(*
* A list of zero terminated key/value strings. There is no end marker for
* the list, so it is required to rely on the side data size to stop.
*)
AV_PKT_DATA_STRINGS_METADATA,
(*
* Subtitle event position
* @code
* u32le x1
* u32le y1
* u32le x2
* u32le y2
* @endcode
*)
AV_PKT_DATA_SUBTITLE_POSITION,
(*
* Data found in BlockAdditional element of matroska container. There is
* no end marker for the data, so it is required to rely on the side data
* size to recognize the end. 8 byte id (as found in BlockAddId) followed
* by data.
*)
AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,
(*
* The optional first identifier line of a WebVTT cue.
*)
AV_PKT_DATA_WEBVTT_IDENTIFIER,
(*
* The optional settings (rendering instructions) that immediately
* follow the timestamp specifier of a WebVTT cue.
*)
AV_PKT_DATA_WEBVTT_SETTINGS,
(*
* A list of zero terminated key/value strings. There is no end marker for
* the list, so it is required to rely on the side data size to stop. This
* side data includes updated metadata which appeared in the stream.
*)
AV_PKT_DATA_METADATA_UPDATE,
(*
* MPEGTS stream ID as uint8_t, this is required to pass the stream ID
* information from the demuxer to the corresponding muxer.
*)
AV_PKT_DATA_MPEGTS_STREAM_ID,
(*
* Mastering display metadata (based on SMPTE-2086:2014). This metadata
* should be associated with a video stream and contains data in the form
* of the AVMasteringDisplayMetadata struct.
*)
AV_PKT_DATA_MASTERING_DISPLAY_METADATA,
(*
* This side data should be associated with a video stream and corresponds
* to the AVSphericalMapping structure.
*)
AV_PKT_DATA_SPHERICAL,
(*
* Content light level (based on CTA-861.3). This metadata should be
* associated with a video stream and contains data in the form of the
* AVContentLightMetadata struct.
*)
AV_PKT_DATA_CONTENT_LIGHT_LEVEL,
(*
* ATSC A53 Part 4 Closed Captions. This metadata should be associated with
* a video stream. A53 CC bitstream is stored as uint8_t in AVPacketSideData.data.
* The number of bytes of CC data is AVPacketSideData.size.
*)
AV_PKT_DATA_A53_CC,
(*
* This side data is encryption initialization data.
* The format is not part of ABI, use av_encryption_init_info_* methods to
* access.
*)
AV_PKT_DATA_ENCRYPTION_INIT_INFO,
(*
* This side data contains encryption info for how to decrypt the packet.
* The format is not part of ABI, use av_encryption_info_* methods to access.
*)
AV_PKT_DATA_ENCRYPTION_INFO,
(*
* Active Format Description data consisting of a single byte as specified
* in ETSI TS 101 154 using AVActiveFormatDescription enum.
*)
AV_PKT_DATA_AFD,
(*
* The number of side data types.
* This is not part of the public API/ABI in the sense that it may
* change when new side data types are added.
* This must stay the last enum value.
* If its value becomes huge, some code using it
* needs to be updated as it assumes it to be smaller than other limits.
*)
AV_PKT_DATA_NB);
AVPacketSideData = record
data: puint8_t;
size: int;
_type: AVPacketSideDataType;
end;
pAVPacketSideData = ^AVPacketSideData;
(*
* This structure stores compressed data. It is typically exported by demuxers
* and then passed as input to decoders, or received as output from encoders and
* then passed to muxers.
*
* For video, it should typically contain one compressed frame. For audio it may
* contain several compressed frames. Encoders are allowed to output empty
* packets, with no compressed data, containing only side data
* (e.g. to update some stream parameters at the end of encoding).
*
* AVPacket is one of the few structs in FFmpeg, whose size is a part of public
* ABI. Thus it may be allocated on stack and no new fields can be added to it
* without libavcodec and libavformat major bump.
*
* The semantics of data ownership depends on the buf field.
* If it is set, the packet data is dynamically allocated and is
* valid indefinitely until a call to av_packet_unref() reduces the
* reference count to 0.
*
* If the buf field is not set av_packet_ref() would make a copy instead
* of increasing the reference count.
*
* The side data is always allocated with av_malloc(), copied by
* av_packet_ref() and freed by av_packet_unref().
*
* @see av_packet_ref
* @see av_packet_unref
*)
pAVPacket = ^AVPacket;
AVPacket = record
(*
* A reference to the reference-counted buffer where the packet data is
* stored.
* May be NULL, then the packet data is not reference-counted.
*)
buf: pAVBufferRef;
(*
* 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: int64_t;
(*
* 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: int64_t;
data: puint8_t;
size: int;
stream_index: int;
(*
* A combination of AV_PKT_FLAG values
*)
flags: int;
(*
* Additional packet data that can be provided by the container.
* Packet can contain several types of side information.
*)
side_data: pAVPacketSideData;
side_data_elems: int;
(*
* Duration of this packet in AVStream->time_base units, 0 if unknown.
* Equals next_pts - this_pts in presentation order.
*)
duration: int64_t;
pos: int64_t; // < byte position in stream, -1 if unknown
{$IFDEF FF_API_CONVERGENCE_DURATION}
(*
* @deprecated Same as the duration field, but as int64_t. This was required
* for Matroska subtitles, whose duration values could overflow when the
* duration field was still an int.
*)
// attribute_deprecated
convergence_duration: int64_t deprecated;
{$ENDIF}
end;
AVSideDataParamChangeFlags = ( //
AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT = $0001, //
AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT = $0002, //
AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE = $0004, //
AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS = $0008 //
);
(*
* @}
*)
AVCodecInternal = record
end;
pAVCodecInternal = ^AVCodecInternal;
AVFieldOrder = ( //
AV_FIELD_UNKNOWN, AV_FIELD_PROGRESSIVE, AV_FIELD_TT, // < Top coded_first, top displayed first
AV_FIELD_BB, // < Bottom coded first, bottom displayed first
AV_FIELD_TB, // < Top coded first, bottom displayed first
AV_FIELD_BT // < Bottom coded first, top displayed first
);
AVCodecDefault = record
end;
(*
* AVCodec.
*)
pAVCodec = ^avcodec;
ppAVCodec = ^pAVCodec;
pAVCodecContext = ^AVCodecContext;
ppAVCodecContext = ^pAVCodecContext;
pAVCodecDefault = ^AVCodecDefault;
pAVSubtitle = ^AVSubtitle;
avcodec = record
(*
* Name of the codec implementation.
* The name is globally unique among encoders and among decoders (but an
* encoder and a decoder can share the same name).
* This is the primary way to find a codec from the user perspective.
*)
name: pAnsiChar;
(*
* Descriptive name for the codec, meant to be more human readable than name.
* You should use the NULL_IF_CONFIG_SMALL() macro to define it.
*)
long_name: pAnsiChar;
_type: AVMediaType;
id: AVCodecID;
(*
* Codec capabilities.
* see AV_CODEC_CAP_*
*)
capabilities: int;
supported_framerates: pAVRational; // < array of supported framerates, or NULL if any, array is terminated by {0,0}
pix_fmts: pAVPixelFormat; // < array of supported pixel formats, or NULL if unknown, array is terminated by -1
supported_samplerates: pInt; // < array of supported audio samplerates, or NULL if unknown, array is terminated by 0
sample_fmts: pAVSampleFormat; // < array of supported sample formats, or NULL if unknown, array is terminated by -1
channel_layouts: puint64_t; // < array of support channel layouts, or NULL if unknown. array is terminated by 0
max_lowres: uint8_t; // < maximum value for lowres supported by the decoder
priv_class: pAVClass; // < AVClass for the private context
profiles: pAVProfile; // < array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN}
(*
* Group name of the codec implementation.
* This is a short symbolic name of the wrapper backing this codec. A
* wrapper uses some kind of external implementation for the codec, such
* as an external library, or a codec implementation provided by the OS or
* the hardware.
* If this field is NULL, this is a builtin, libavcodec native codec.
* If non-NULL, this will be the suffix in AVCodec.name in most cases
* (usually AVCodec.name will be of the form "<codec_name>_<wrapper_name>").
*)
wrapper_name: pAnsiChar;
(* ***************************************************************
* No fields below this line are part of the public API. They
* may not be used outside of libavcodec and can be changed and
* removed at will.
* New public fields should be added right above.
*****************************************************************
*)
priv_data_size: int;
next: pAVCodec;
(*
* @name Frame-level threading support functions
* @{
*)
(*
* If defined, called on thread contexts when they are created.
* If the codec allocates writable tables in init(), re-allocate them here.
* priv_data will be set to a copy of the original.
*)
// int (*init_thread_copy)(AVCodecContext *);
init_thread_copy: function(ctx: pAVCodecContext): int; cdecl;
(*
* Copy necessary context variables from a previous thread context to the current one.
* If not defined, the next thread will start automatically; otherwise, the codec
* must call ff_thread_finish_setup().
*
* dst and src will (rarely) point to the same context, in which case memcpy should be skipped.
*)
// int (*update_thread_context)(AVCodecContext *dst, const AVCodecContext *src);
update_thread_context: function(dst: pAVCodecContext; const src: pAVCodecContext): int; cdecl;
(*
* Private codec-specific defaults.
*)
defaults: pAVCodecDefault;
(*
* Initialize codec static data, called from avcodec_register().
*
* This is not intended for time consuming operations as it is
* run for every codec regardless of that codec being used.
*)
// void (*init_static_data)(struct AVCodec *codec);
init_static_data: procedure(codec: pAVCodec); cdecl;
// int (*init)(AVCodecContext *);
init: function(ctx: pAVCodecContext): int; cdecl;
// int (*encode_sub)(AVCodecContext *, uint8_t *buf, int buf_size, const struct AVSubtitle *sub);
encode_sub: function(ctx: pAVCodecContext; buf: puint8_t; buf_size: int; const sub: pAVSubtitle): int; cdecl;
(*
* Encode data to an AVPacket.
*
* @param avctx codec context
* @param avpkt output AVPacket (may contain a user-provided buffer)
* @param[in] frame AVFrame containing the raw data to be encoded
* @param[out] got_packet_ptr encoder sets to 0 or 1 to indicate that a
* non-empty packet was returned in avpkt.
* @return 0 on success, negative error code on failure
*)
// int (*encode2)(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame,int *got_packet_ptr);
encode2: function(avctx: pAVCodecContext; avpkt: pAVPacket; const frame: pAVFrame; got_packet_ptr: pInt): int; cdecl;
// int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt);
decode: function(cnt: pAVCodecContext; outdata: Pointer; outdata_size: pInt; avpkt: pAVPacket): int; cdecl;
// int (*close)(AVCodecContext *);
close: function(ctx: pAVCodecContext): int; cdecl;
(*
* Encode API with decoupled packet/frame dataflow. The API is the
* same as the avcodec_ prefixed APIs (avcodec_send_frame() etc.), except
* that:
* - never called if the codec is closed or the wrong type,
* - if AV_CODEC_CAP_DELAY is not set, drain frames are never sent,
* - only one drain frame is ever passed down,
*)
// int (*send_frame)(AVCodecContext *avctx, const AVFrame *frame);
send_frame: function(avctx: pAVCodecContext; const frame: pAVFrame): int; cdecl;
// int (*receive_packet)(AVCodecContext *avctx, AVPacket *avpkt);
receive_packet: function(avctx: pAVCodecContext; avpkt: pAVPacket): int; cdecl;
(*
* Decode API with decoupled packet/frame dataflow. This function is called
* to get one output frame. It should call ff_decode_get_packet() to obtain
* input data.
*)
// int (*receive_frame)(AVCodecContext *avctx, AVFrame *frame);
receive_frame: function(avctx: pAVCodecContext; frame: pAVFrame): int; cdecl;
(*
* Flush buffers.
* Will be called when seeking
*)
// void (*flush)(AVCodecContext *);
flush: procedure(ctx: pAVCodecContext); cdecl;
(*
* Internal codec capabilities.
* See FF_CODEC_CAP_* in internal.h
*)
caps_internal: int;
(*
* Decoding only, a comma-separated list of bitstream filters to apply to
* packets before decoding.
*)
bsfs: pAnsiChar;
(*
* Array of pointers to hardware configurations supported by the codec,
* or NULL if no hardware supported. The array is terminated by a NULL
* pointer.
*
* The user can only access this field via avcodec_get_hw_config().
*)
hw_configs: ppAVCodecHWConfigInternal;
end;
TAVCodecContext_execute = function(c2: pAVCodecContext; arg: Pointer): int; cdecl;
TAVCodecContext_execute2 = function(c2: pAVCodecContext; arg: Pointer; jobnr: int; threadnr: int): int; cdecl;
(*
* 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.
* You can use AVOptions (av_opt* / av_set/get*()) to access these fields from user
* applications.
* The name string for AVOptions options matches the associated command line
* parameter name and can be found in libavcodec/options_table.h
* The AVOption/command line parameter names differ in some cases from the C
* structure field names for historic reasons or brevity.
* sizeof(AVCodecContext) must not be used outside libav*.
*)
AVCodecContext = record
(*
* information on struct for av_log
* - set by avcodec_alloc_context3
*)
av_class: pAVClass;
log_level_offset: int;
codec_type: AVMediaType; (* see AVMEDIA_TYPE_xxx *)
codec: pAVCodec;
codec_id: AVCodecID; (* see AV_CODEC_ID_xxx *)
(*
* fourcc (LSB first, so "ABCD" -> ('D'shl24) + ('C'shl16) + ('B'shl8) + 'A').
* This is used to work around some encoder bugs.
* A demuxer should set this to what is stored in the field used to identify the codec.
* If there are multiple such fields in a container then the demuxer should choose the one
* which maximizes the information about the used codec.
* If the codec tag field in a container is larger than 32 bits then the demuxer should
* remap the longer ID to 32 bits with a table or other structure. Alternatively a new
* extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
* first.
* - encoding: Set by user, if not then the default based on codec_id will be used.
* - decoding: Set by user, will be converted to uppercase by libavcodec during init.
*)
codec_tag: unsigned;
priv_data: Pointer;
(*
* Private context used for internal data.
*
* Unlike priv_data, this is not codec-specific. It is used in general
* libavcodec functions.
*)
internal: pAVCodecInternal;
(*
* Private data of the user, can be used to carry app specific stuff.
* - encoding: Set by user.
* - decoding: Set by user.
*)
opaque: Pointer;
(*
* the average bitrate
* - encoding: Set by user; unused for constant quantizer encoding.
* - decoding: Set by user, may be overwritten by libavcodec
* if this info is available in the stream
*)
bit_rate: int64_t;
(*
* 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: int;
(*
* 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: int;
(*
* - encoding: Set by user.
* - decoding: unused
*)
compression_level: int;
(*
* AV_CODEC_FLAG_*.
* - encoding: Set by user.
* - decoding: Set by user.
*)
flags: int;
(*
* AV_CODEC_FLAG2_*
* - encoding: Set by user.
* - decoding: Set by user.
*)
flags2: int;
(*
* some codecs need / can use extradata like Huffman tables.
* MJPEG: Huffman tables
* rv10: additional flags
* MPEG-4: global headers (they can be in the bitstream or here)
* The allocated memory should be AV_INPUT_BUFFER_PADDING_SIZE bytes larger
* than extradata_size to avoid problems if it is read with the bitstream reader.
* The bytewise contents of extradata must not depend on the architecture or CPU endianness.
* Must be allocated with the av_malloc() family of functions.
* - encoding: Set/allocated/freed by libavcodec.
* - decoding: Set/allocated/freed by user.
*)
extradata: puint8_t;
extradata_size: int;
(*
* 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.
* This often, but not always is the inverse of the frame rate or field rate
* for video. 1/time_base is not the average frame rate if the frame rate is not
* constant.
*
* Like containers, elementary streams also can store timestamps, 1/time_base
* is the unit in which these timestamps are specified.
* As example of such codec time base see ISO/IEC 14496-2:2001(E)
* vop_time_increment_resolution and fixed_vop_rate
* (fixed_vop_rate == 0 implies that it is different from the framerate)
*
* - encoding: MUST be set by user.
* - decoding: the use of this field for decoding is deprecated.
* Use framerate instead.
*)
time_base: AVRational;
(*
* 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: int;
(*
* Codec delay.
*
* Encoding: Number of frames delay there will be from the encoder input to
* the decoder output. (we assume the decoder matches the spec)
* Decoding: Number of frames delay in addition to what a standard decoder
* as specified in the spec would produce.
*
* Video:
* Number of frames the decoded output will be delayed relative to the
* encoded input.
*
* Audio:
* For encoding, this field is unused (see initial_padding).
*
* For decoding, this is the number of samples the decoder needs to
* output before the decoder's output is valid. When seeking, you should
* start decoding this many samples prior to your desired seek point.
*
* - encoding: Set by libavcodec.
* - decoding: Set by libavcodec.
*)
delay: int;
(* video only *)
(*
* picture width / height.
*
* @note Those fields may not match the values of the last
* AVFrame output by avcodec_decode_video2 due frame
* reordering.
*
* - encoding: MUST be set by user.
* - decoding: May be set by the user before opening the decoder if known e.g.
* from the container. Some decoders will require the dimensions
* to be set by the caller. During decoding, the decoder may
* overwrite those values as required while parsing the data.
*)
width, height: int;
(*
* Bitstream width / height, may be different from width/height e.g. when
* the decoded frame is cropped before being output or lowres is enabled.
*
* @note Those field may not match the value of the last
* AVFrame output by avcodec_receive_frame() due frame
* reordering.
*
* - encoding: unused
* - decoding: May be set by the user before opening the decoder if known
* e.g. from the container. During decoding, the decoder may
* overwrite those values as required while parsing the data.
*)
coded_width, coded_height: int;
(*
* the number of pictures in a group of pictures, or 0 for intra_only
* - encoding: Set by user.
* - decoding: unused
*)
gop_size: int;
(*
* Pixel format, see AV_PIX_FMT_xxx.
* May be set by the demuxer if known from headers.
* May be overridden by the decoder if it knows better.
*
* @note This field may not match the value of the last
* AVFrame output by avcodec_receive_frame() due frame
* reordering.
*
* - encoding: Set by user.
* - decoding: Set by user if known, overridden by libavcodec while
* parsing the data.
*)
pix_fmt: AVPixelFormat;
(*
* 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.
* When multithreading is used, it may be called from multiple threads
* at the same time; threads might draw different parts of the same AVFrame,
* or multiple AVFrames, and there is no guarantee that slices will be drawn
* in order.
* 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
*)
// void (*draw_horiz_band)(struct AVCodecContext *s,
// const AVFrame *src, int offset[AV_NUM_DATA_POINTERS],
// int y, int type, int height);
draw_horiz_band: procedure(s: pAVCodecContext; const src: pAVFrame; offset: pAVNDPArray; y, _type, height: int); cdecl;
(*
* callback to negotiate the pixelFormat
* @param fmt is the list of formats which are supported by the codec,
* it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
* The first is always the native one.
* @note The callback may be called again immediately if initialization for
* the selected (hardware-accelerated) pixel format failed.
* @warning Behavior is undefined if the callback returns a value not
* in the fmt list of formats.
* @return the chosen format
* - encoding: unused
* - decoding: Set by user, if not set the native format will be chosen.
*)
// enum AVPixelFormat (*get_format)(struct AVCodecContext *s, const enum AVPixelFormat * fmt);
get_format: procedure(s: pAVCodecContext; const fmt: pAVPixelFormat); cdecl;
(*
* maximum number of B-frames between non-B-frames
* Note: The output will be delayed by max_b_frames+1 relative to the input.
* - encoding: Set by user.
* - decoding: unused
*)
max_b_frames: int;
(*
* 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: float;
{$IFDEF FF_API_PRIVATE_OPT}
(* @deprecated use encoder private options instead *)
// attribute_deprecated
b_frame_strategy: int deprecated;
{$ENDIF}
(*
* qscale offset between IP and B-frames
* - encoding: Set by user.
* - decoding: unused
*)
b_quant_offset: float;
(*
* Size of the frame reordering buffer in the decoder.
* For MPEG-2 it is 1 IPB or 0 low delay IP.
* - encoding: Set by libavcodec.
* - decoding: Set by libavcodec.
*)
has_b_frames: int;
{$IFDEF FF_API_PRIVATE_OPT}
(* @deprecated use encoder private options instead *)
// attribute_deprecated
mpeg_quant: int deprecated;
{$ENDIF}
(*
* qscale factor between P- and I-frames
* If > 0 then the last P-frame quantizer will be used (q = lastp_q * factor + offset).
* If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
* - encoding: Set by user.
* - decoding: unused
*)
i_quant_factor: float;
(*
* qscale offset between P and I-frames
* - encoding: Set by user.
* - decoding: unused
*)
i_quant_offset: float;
(*
* luminance masking (0-> disabled)
* - encoding: Set by user.
* - decoding: unused
*)
lumi_masking: float;
(*
* temporary complexity masking (0-> disabled)
* - encoding: Set by user.
* - decoding: unused
*)
temporal_cplx_masking: float;
(*
* spatial complexity masking (0-> disabled)
* - encoding: Set by user.
* - decoding: unused
*)
spatial_cplx_masking: float;
(*
* p block masking (0-> disabled)
* - encoding: Set by user.
* - decoding: unused
*)
p_masking: float;
(*
* darkness masking (0-> disabled)
* - encoding: Set by user.
* - decoding: unused
*)
dark_masking: float;
(*
* slice count
* - encoding: Set by libavcodec.
* - decoding: Set by user (or 0).
*)
slice_count: int;
{$IFDEF FF_API_PRIVATE_OPT}
(* @deprecated use encoder private options instead *)
// attribute_deprecated
prediction_method: int deprecated;
{$ENDIF}
(*
* slice offsets in the frame in bytes
* - encoding: Set/allocated by libavcodec.
* - decoding: Set/allocated by user (or NULL).
*)
slice_offset: pInt;
(*
* sample aspect ratio (0 if unknown)
* That is the width of a pixel divided by the height of the pixel.
* Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*)
sample_aspect_ratio: AVRational;
(*
* motion estimation comparison function
* - encoding: Set by user.
* - decoding: unused
*)
me_cmp: int;
(*
* subpixel motion estimation comparison function
* - encoding: Set by user.
* - decoding: unused
*)
me_sub_cmp: int;
(*
* macroblock comparison function (not supported yet)
* - encoding: Set by user.
* - decoding: unused
*)
mb_cmp: int;
(*
* interlaced DCT comparison function
* - encoding: Set by user.
* - decoding: unused
*)
ildct_cmp: int;
(*
* ME diamond size & shape
* - encoding: Set by user.
* - decoding: unused
*)
dia_size: int;
(*
* amount of previous MV predictors (2a+1 x 2a+1 square)
* - encoding: Set by user.
* - decoding: unused
*)
last_predictor_count: int;
{$IFDEF FF_API_PRIVATE_OPT}
(* @deprecated use encoder private options instead *)
// attribute_deprecated
pre_me: int deprecated;
{$ENDIF}
(*
* motion estimation prepass comparison function
* - encoding: Set by user.
* - decoding: unused
*)
me_pre_cmp: int;
(*
* ME prepass diamond size & shape
* - encoding: Set by user.
* - decoding: unused
*)
pre_dia_size: int;
(*
* subpel ME quality
* - encoding: Set by user.
* - decoding: unused
*)
me_subpel_quality: int;
(*
* maximum motion estimation search range in subpel units
* If 0 then no limit.
*
* - encoding: Set by user.
* - decoding: unused
*)
me_range: int;
(*
* slice flags
* - encoding: unused
* - decoding: Set by user.
*)
slice_flags: int;
(*
* macroblock decision mode
* - encoding: Set by user.
* - decoding: unused
*)
mb_decision: int;
(*
* custom intra quantization matrix
* Must be allocated with the av_malloc() family of functions, and will be freed in
* avcodec_free_context().
* - encoding: Set/allocated by user, freed by libavcodec. Can be NULL.
* - decoding: Set/allocated/freed by libavcodec.
*)
intra_matrix: puint16_t;
(*
* custom inter quantization matrix
* Must be allocated with the av_malloc() family of functions, and will be freed in
* avcodec_free_context().
* - encoding: Set/allocated by user, freed by libavcodec. Can be NULL.
* - decoding: Set/allocated/freed by libavcodec.
*)
inter_matrix: puint16_t;
{$IFDEF FF_API_PRIVATE_OPT}
(* @deprecated use encoder private options instead *)
// attribute_deprecated
scenechange_threshold: int deprecated;
(* @deprecated use encoder private options instead *)
// attribute_deprecated
noise_reduction: int deprecated;
{$ENDIF}
(*
* precision of the intra DC coefficient - 8
* - encoding: Set by user.
* - decoding: Set by libavcodec
*)
intra_dc_precision: int;
(*
* Number of macroblock rows at the top which are skipped.
* - encoding: unused
* - decoding: Set by user.
*)
skip_top: int;
(*
* Number of macroblock rows at the bottom which are skipped.
* - encoding: unused
* - decoding: Set by user.
*)
skip_bottom: int;
(*
* minimum MB Lagrange multiplier
* - encoding: Set by user.
* - decoding: unused
*)
mb_lmin: int;
(*
* maximum MB Lagrange multiplier
* - encoding: Set by user.
* - decoding: unused
*)
mb_lmax: int;
{$IFDEF FF_API_PRIVATE_OPT}
(*
* @deprecated use encoder private options instead
*)
// attribute_deprecated
me_penalty_compensation: int deprecated;
{$ENDIF}
(*
* - encoding: Set by user.
* - decoding: unused
*)
bidir_refine: int;
{$IFDEF FF_API_PRIVATE_OPT}
(* @deprecated use encoder private options instead *)
// attribute_deprecated
brd_scale: int deprecated;
{$ENDIF}
(*
* minimum GOP size
* - encoding: Set by user.
* - decoding: unused
*)
keyint_min: int;
(*
* number of reference frames
* - encoding: Set by user.
* - decoding: Set by lavc.
*)
refs: int;
{$IFDEF FF_API_PRIVATE_OPT}
(* @deprecated use encoder private options instead *)
// attribute_deprecated
chromaoffset: int;
{$ENDIF}
(*
* Note: Value depends upon the compare function used for fullpel ME.
* - encoding: Set by user.
* - decoding: unused
*)
mv0_threshold: int;
{$IFDEF FF_API_PRIVATE_OPT}
(* @deprecated use encoder private options instead *)
// attribute_deprecated
b_sensitivity: int deprecated;
{$ENDIF}
(*
* Chromaticity coordinates of the source primaries.
* - encoding: Set by user
* - decoding: Set by libavcodec
*)
color_primaries: AVColorPrimaries;
(*
* Color Transfer Characteristic.
* - encoding: Set by user
* - decoding: Set by libavcodec
*)
color_trc: AVColorTransferCharacteristic;
(*
* YUV colorspace type.
* - encoding: Set by user
* - decoding: Set by libavcodec
*)
colorspace: AVColorSpace;
(*
* MPEG vs JPEG YUV range.
* - encoding: Set by user
* - decoding: Set by libavcodec
*)
color_range: AVColorRange;
(*
* This defines the location of chroma samples.
* - encoding: Set by user
* - decoding: Set by libavcodec
*)
chroma_sample_location: AVChromaLocation;
(*
* Number of slices.
* Indicates number of picture subdivisions. Used for parallelized
* decoding.
* - encoding: Set by user
* - decoding: unused
*)
slices: int;
(* Field order
* - encoding: set by libavcodec
* - decoding: Set by user.
*)
field_order: AVFieldOrder;
(* audio only *)
sample_rate: int; // < samples per second
channels: int; // < number of audio channels
(*
* audio sample format
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*)
sample_fmt: AVSampleFormat; // < sample format
(* The following data should not be initialized. *)
(*
* Number of samples per channel in an audio frame.
*
* - encoding: set by libavcodec in avcodec_open2(). Each submitted frame
* except the last must contain exactly frame_size samples per channel.
* May be 0 when the codec has AV_CODEC_CAP_VARIABLE_FRAME_SIZE set, then the
* frame size is not restricted.
* - decoding: may be set by some decoders to indicate constant frame size
*)
frame_size: int;
(*
* Frame counter, set by libavcodec.
*
* - decoding: total number of frames returned from the decoder so far.
* - encoding: total number of frames passed to the encoder so far.
*
* @note the counter is not incremented if encoding/decoding resulted in
* an error.
*)
frame_number: int;
(*
* number of bytes per packet if constant and known or 0
* Used by some WAV based audio codecs.
*)
block_align: int;
(*
* Audio cutoff bandwidth (0 means "automatic")
* - encoding: Set by user.
* - decoding: unused
*)
cutoff: int;
(*
* Audio channel layout.
* - encoding: set by user.
* - decoding: set by user, may be overwritten by libavcodec.
*)
channel_layout: uint64_t;
(*
* Request decoder to use this channel layout if it can (0 for default)
* - encoding: unused
* - decoding: Set by user.
*)
request_channel_layout: uint64_t;
(*
* Type of service that the audio stream conveys.
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*)
audio_service_type: AVAudioServiceType;
(*
* desired sample format
* - encoding: Not used.
* - decoding: Set by user.
* Decoder will decode to this format if it can.
*)
request_sample_fmt: AVSampleFormat;
(*
* This callback is called at the beginning of each frame to get data
* buffer(s) for it. There may be one contiguous buffer for all the data or
* there may be a buffer per each data plane or anything in between. What
* this means is, you may set however many entries in buf[] you feel necessary.
* Each buffer must be reference-counted using the AVBuffer API (see description
* of buf[] below).
*
* The following fields will be set in the frame before this callback is
* called:
* - format
* - width, height (video only)
* - sample_rate, channel_layout, nb_samples (audio only)
* Their values may differ from the corresponding values in
* AVCodecContext. This callback must use the frame values, not the codec
* context values, to calculate the required buffer size.
*
* This callback must fill the following fields in the frame:
* - data[]
* - linesize[]
* - extended_data:
* * if the data is planar audio with more than 8 channels, then this
* callback must allocate and fill extended_data to contain all pointers
* to all data planes. data[] must hold as many pointers as it can.
* extended_data must be allocated with av_malloc() and will be freed in
* av_frame_unref().
* * otherwise extended_data must point to data
* - buf[] must contain one or more pointers to AVBufferRef structures. Each of
* the frame's data and extended_data pointers must be contained in these. That
* is, one AVBufferRef for each allocated chunk of memory, not necessarily one
* AVBufferRef per data[] entry. See: av_buffer_create(), av_buffer_alloc(),
* and av_buffer_ref().
* - extended_buf and nb_extended_buf must be allocated with av_malloc() by
* this callback and filled with the extra buffers if there are more
* buffers than buf[] can hold. extended_buf will be freed in
* av_frame_unref().
*
* If AV_CODEC_CAP_DR1 is not set then get_buffer2() must call
* avcodec_default_get_buffer2() instead of providing buffers allocated by
* some other means.
*
* Each data plane must be aligned to the maximum required by the target
* CPU.
*
* @see avcodec_default_get_buffer2()
*
* Video:
*
* If AV_GET_BUFFER_FLAG_REF is set in flags then the frame may be reused
* (read and/or written to if it is writable) later by libavcodec.
*
* avcodec_align_dimensions2() should be used to find the required width and
* height, as they normally need to be rounded up to the next multiple of 16.
*
* Some decoders do not support linesizes changing between frames.
*
* If frame multithreading is used and thread_safe_callbacks is set,
* this callback may be called from a different thread, but not from more
* than one at once. Does not need to be reentrant.
*
* @see avcodec_align_dimensions2()
*
* Audio:
*
* Decoders request a buffer of a particular size by setting
* AVFrame.nb_samples prior to calling get_buffer2(). The decoder may,
* however, utilize only part of the buffer by setting AVFrame.nb_samples
* to a smaller value in the output frame.
*
* As a convenience, av_samples_get_buffer_size() and
* av_samples_fill_arrays() in libavutil may be used by custom get_buffer2()
* functions to find the required data size and to fill data pointers and
* linesize. In AVFrame.linesize, only linesize[0] may be set for audio
* since all planes must be the same size.
*
* @see av_samples_get_buffer_size(), av_samples_fill_arrays()
*
* - encoding: unused
* - decoding: Set by libavcodec, user can override.
*)
// int (*get_buffer2)(struct AVCodecContext *s, AVFrame *frame, int flags);
get_buffer2: function(s: pAVCodecContext; frame: pAVFrame; flags: int): int; cdecl;
(*
* If non-zero, the decoded audio and video frames returned from
* avcodec_decode_video2() and avcodec_decode_audio4() are reference-counted
* and are valid indefinitely. The caller must free them with
* av_frame_unref() when they are not needed anymore.
* Otherwise, the decoded frames must not be freed by the caller and are
* only valid until the next decode call.
*
* This is always automatically enabled if avcodec_receive_frame() is used.
*
* - encoding: unused
* - decoding: set by the caller before avcodec_open2().
*)
// attribute_deprecated
refcounted_frames: int deprecated;
(* - encoding parameters *)
qcompress: float; // < amount of qscale change between easy & hard scenes (0.0-1.0)
qblur: float; // < amount of qscale smoothing over time (0.0-1.0)
(*
* minimum quantizer
* - encoding: Set by user.
* - decoding: unused
*)
qmin: int;
(*
* maximum quantizer
* - encoding: Set by user.
* - decoding: unused
*)
qmax: int;
(*
* maximum quantizer difference between frames
* - encoding: Set by user.
* - decoding: unused
*)
max_qdiff: int;
(*
* decoder bitstream buffer size
* - encoding: Set by user.
* - decoding: unused
*)
rc_buffer_size: int;
(*
* ratecontrol override, see RcOverride
* - encoding: Allocated/set/freed by user.
* - decoding: unused
*)
rc_override_count: int;
rc_override: pRcOverride;
(*
* maximum bitrate
* - encoding: Set by user.
* - decoding: Set by user, may be overwritten by libavcodec.
*)
rc_max_rate: int64_t;
(*
* minimum bitrate
* - encoding: Set by user.
* - decoding: unused
*)
rc_min_rate: int64_t;
(*
* Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow.
* - encoding: Set by user.
* - decoding: unused.
*)
rc_max_available_vbv_use: float;
(*
* Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow.
* - encoding: Set by user.
* - decoding: unused.
*)
rc_min_vbv_overflow_use: float;
(*
* Number of bits which should be loaded into the rc buffer before decoding starts.
* - encoding: Set by user.
* - decoding: unused
*)
rc_initial_buffer_occupancy: int;
{$IFDEF FF_API_CODER_TYPE}
(*
* @deprecated use encoder private options instead
*)
// attribute_deprecated
coder_type: int deprecated;
{$ENDIF} (* FF_API_CODER_TYPE *)
{$IFDEF FF_API_PRIVATE_OPT}
(* @deprecated use encoder private options instead *)
// attribute_deprecated
context_model: int deprecated;
{$ENDIF}
{$IFDEF FF_API_PRIVATE_OPT}
(* @deprecated use encoder private options instead *)
// attribute_deprecated
frame_skip_threshold: int deprecated;
(* @deprecated use encoder private options instead *)
// attribute_deprecated
frame_skip_factor: int;
(* @deprecated use encoder private options instead *)
// attribute_deprecated
frame_skip_exp: int deprecated;
(* @deprecated use encoder private options instead *)
// attribute_deprecated
frame_skip_cmp: int deprecated;
{$ENDIF} (* FF_API_PRIVATE_OPT *)
(*
* trellis RD quantization
* - encoding: Set by user.
* - decoding: unused
*)
trellis: int;
{$IFDEF FF_API_PRIVATE_OPT}
(* @deprecated use encoder private options instead *)
// attribute_deprecated
min_prediction_order: int deprecated;
(* @deprecated use encoder private options instead *)
// attribute_deprecated
max_prediction_order: int deprecated;
(* @deprecated use encoder private options instead *)
// attribute_deprecated
timecode_frame_start: int64_t deprecated;
{$ENDIF}
{$IFDEF FF_API_RTP_CALLBACK}
(*
* @deprecated unused
*)
(* The RTP callback: This function is called *)
(* every time the encoder has a packet to send. *)
(* It 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. *)
// attribute_deprecated
// void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
rtp_callback: procedure(avctx: pAVCodecContext; data: Pointer; size: int; mb_nb: int); cdecl;
{$ENDIF}
{$IFDEF FF_API_PRIVATE_OPT}
(* @deprecated use encoder private options instead *)
// attribute_deprecated
rtp_payload_size: int deprecated; (* The size of the RTP payload: the coder will *)
(* do its 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 transmitted RTP payload. *)
{$ENDIF}
{$IFDEF FF_API_STAT_BITS}
(* statistics, used for 2-pass encoding *)
// attribute_deprecated
mv_bits: int deprecated;
// attribute_deprecated
header_bits: int deprecated;
// attribute_deprecated
i_tex_bits: int deprecated;
// attribute_deprecated
p_tex_bits: int deprecated;
// attribute_deprecated
i_count: int deprecated;
// attribute_deprecated
p_count: int deprecated;
// attribute_deprecated
skip_count: int deprecated;
// attribute_deprecated
misc_bits: int deprecated;
(* @deprecated this field is unused *)
// attribute_deprecated
frame_bits: int deprecated;
{$ENDIF}
(*
* pass1 encoding statistics output buffer
* - encoding: Set by libavcodec.
* - decoding: unused
*)
stats_out: pAnsiChar;
(*
* pass2 encoding statistics input buffer
* Concatenated stuff from stats_out of pass1 should be placed here.
* - encoding: Allocated/set/freed by user.
* - decoding: unused
*)
stats_in: pAnsiChar;
(*
* Work around bugs in encoders which sometimes cannot be detected automatically.
* - encoding: Set by user
* - decoding: Set by user
*)
workaround_bugs: int;
(*
* strictly follow the standard (MPEG-4, ...).
* - encoding: Set by user.
* - decoding: Set by user.
* Setting this to STRICT or higher means the encoder and decoder will
* generally do stupid things, whereas setting it to unofficial or lower
* will mean the encoder might produce output that is not supported by all
* spec-compliant decoders. Decoders don't differentiate between normal,
* unofficial and experimental (that is, they always try to decode things
* when they can) unless they are explicitly asked to behave stupidly
* (=strictly conform to the specs)
*)
strict_std_compliance: int;
(*
* error concealment flags
* - encoding: unused
* - decoding: Set by user.
*)
error_concealment: int;
(*
* debug
* - encoding: Set by user.
* - decoding: Set by user.
*)
debug: int;
{$IFDEF FF_API_DEBUG_MV}
(*
* debug
* - encoding: Set by user.
* - decoding: Set by user.
*)
debug_mv: int;
{$ENDIF}
(*
* Error recognition; may misdetect some more or less valid parts as errors.
* - encoding: unused
* - decoding: Set by user.
*)
err_recognition: int;
(*
* opaque 64-bit number (generally a PTS) that will be reordered and
* output in AVFrame.reordered_opaque
* - encoding: Set by libavcodec to the reordered_opaque of the input
* frame corresponding to the last returned packet. Only
* supported by encoders with the
* AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE capability.
* - decoding: Set by user.
*)
reordered_opaque: int64_t;
(*
* Hardware accelerator in use
* - encoding: unused.
* - decoding: Set by libavcodec
*)
hwaccel: pAVHWAccel;
(*
* Hardware accelerator context.
* For some hardware accelerators, a global context needs to be
* provided by the user. In that case, this holds display-dependent
* data FFmpeg cannot instantiate itself. Please refer to the
* FFmpeg HW accelerator documentation to know how to fill this
* is. e.g. for VA API, this is a struct vaapi_context.
* - encoding: unused
* - decoding: Set by user
*)
hwaccel_context: Pointer;
(*
* error
* - encoding: Set by libavcodec if flags & AV_CODEC_FLAG_PSNR.
* - decoding: unused
*)
// uint64_t error[AV_NUM_DATA_POINTERS];
error: TAVNDPArray_uint64_t;
(*
* DCT algorithm, see FF_DCT_* below
* - encoding: Set by user.
* - decoding: unused
*)
dct_algo: int;
(*
* IDCT algorithm, see FF_IDCT_* below.
* - encoding: Set by user.
* - decoding: Set by user.
*)
idct_algo: int;
(*
* bits per sample/pixel from the demuxer (needed for huffyuv).
* - encoding: Set by libavcodec.
* - decoding: Set by user.
*)
bits_per_coded_sample: int;
(*
* Bits per sample/pixel of internal libavcodec pixel/sample format.
* - encoding: set by user.
* - decoding: set by libavcodec.
*)
bits_per_raw_sample: int;
{$IFDEF FF_API_LOWRES}
(*
* low resolution decoding, 1-> 1/2 size, 2->1/4 size
* - encoding: unused
* - decoding: Set by user.
*)
lowres: int;
{$ENDIF}
{$IFDEF FF_API_CODED_FRAME}
(*
* the picture in the bitstream
* - encoding: Set by libavcodec.
* - decoding: unused
*
* @deprecated use the quality factor packet side data instead
*)
// attribute_deprecated
coded_frame: pAVFrame deprecated;
{$ENDIF}
(*
* 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: int;
(*
* Which multithreading methods to use.
* Use of FF_THREAD_FRAME will increase decoding delay by one frame per thread,
* so clients which cannot provide future frames should not use it.
*
* - encoding: Set by user, otherwise the default is used.
* - decoding: Set by user, otherwise the default is used.
*)
thread_type: int;
(*
* Which multithreading methods are in use by the codec.
* - encoding: Set by libavcodec.
* - decoding: Set by libavcodec.
*)
active_thread_type: int;
(*
* Set by the client if its custom get_buffer() callback can be called
* synchronously from another thread, which allows faster multithreaded decoding.
* draw_horiz_band() will be called from other threads regardless of this setting.
* Ignored if the default get_buffer() is used.
* - encoding: Set by user.
* - decoding: Set by user.
*)
thread_safe_callbacks: int;
(*
* 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.
*)
// int (* execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size);
execute: function(c: pAVCodecContext; func: TAVCodecContext_execute; arg2: Pointer; ret: pInt; count: int; size: int): int; cdecl;
(*
* The codec may call this to execute several independent things.
* It will return only after finishing all tasks.
* The user may replace this with some multithreaded implementation,
* the default implementation will execute the parts serially.
* Also see avcodec_thread_init and e.g. the --enable-pthread configure option.
* @param c context passed also to func
* @param count the number of things to execute
* @param arg2 argument passed unchanged to func
* @param ret return values of executed functions, must have space for "count" values. May be NULL.
* @param func function that will be called count times, with jobnr from 0 to count-1.
* threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no
* two instances of func executing at the same time will have the same threadnr.
* @return always 0 currently, but code should handle a future improvement where when any call to func
* returns < 0 no further calls to func may be done and < 0 is returned.
* - encoding: Set by libavcodec, user can override.
* - decoding: Set by libavcodec, user can override.
*)
// int (* execute2)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count);
execute2: function(c: pAVCodecContext; func: TAVCodecContext_execute2; arg2: Pointer; ret: pInt; count: int): int; cdecl;
(*
* noise vs. sse weight for the nsse comparison function
* - encoding: Set by user.
* - decoding: unused
*)
nsse_weight: int;
(*
* profile
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*)
profile: int;
(*
* level
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*)
level: int;
(*
* Skip loop filtering for selected frames.
* - encoding: unused
* - decoding: Set by user.
*)
skip_loop_filter: AVDiscard;
(*
* Skip IDCT/dequantization for selected frames.
* - encoding: unused
* - decoding: Set by user.
*)
skip_idct: AVDiscard;
(*
* Skip decoding for selected frames.
* - encoding: unused
* - decoding: Set by user.
*)
skip_frame: AVDiscard;
(*
* Header containing style information for text subtitles.
* For SUBTITLE_ASS subtitle type, it should contain the whole ASS
* [Script Info] and [V4+ Styles] section, plus the [Events] line and
* the Format line following. It shouldn't include any Dialogue line.
* - encoding: Set/allocated/freed by user (before avcodec_open2())
* - decoding: Set/allocated/freed by libavcodec (by avcodec_open2())
*)
subtitle_header: puint8_t;
subtitle_header_size: int;
{$IFDEF FF_API_VBV_DELAY}
(*
* VBV delay coded in the last frame (in periods of a 27 MHz clock).
* Used for compliant TS muxing.
* - encoding: Set by libavcodec.
* - decoding: unused.
* @deprecated this value is now exported as a part of
* AV_PKT_DATA_CPB_PROPERTIES packet side data
*)
// attribute_deprecated
vbv_delay: uint64_t deprecated;
{$ENDIF}
{$IFDEF FF_API_SIDEDATA_ONLY_PKT}
(*
* Encoding only and set by default. Allow encoders to output packets
* that do not contain any encoded data, only side data.
*
* Some encoders need to output such packets, e.g. to update some stream
* parameters at the end of encoding.
*
* @deprecated this field disables the default behaviour and
* it is kept only for compatibility.
*)
// attribute_deprecated
side_data_only_packets: int deprecated;
{$ENDIF}
(*
* Audio only. The number of "priming" samples (padding) inserted by the
* encoder at the beginning of the audio. I.e. this number of leading
* decoded samples must be discarded by the caller to get the original audio
* without leading padding.
*
* - decoding: unused
* - encoding: Set by libavcodec. The timestamps on the output packets are
* adjusted by the encoder so that they always refer to the
* first sample of the data actually contained in the packet,
* including any added padding. E.g. if the timebase is
* 1/samplerate and the timestamp of the first input sample is
* 0, the timestamp of the first output packet will be
* -initial_padding.
*)
initial_padding: int;
(*
* - decoding: For codecs that store a framerate value in the compressed
* bitstream, the decoder may export it here. { 0, 1} when
* unknown.
* - encoding: May be used to signal the framerate of CFR content to an
* encoder.
*)
framerate: AVRational;
(*
* Nominal unaccelerated pixel format, see AV_PIX_FMT_xxx.
* - encoding: unused.
* - decoding: Set by libavcodec before calling get_format()
*)
sw_pix_fmt: AVPixelFormat;
(*
* Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
* - encoding unused.
* - decoding set by user.
*)
pkt_timebase: AVRational;
(*
* AVCodecDescriptor
* - encoding: unused.
* - decoding: set by libavcodec.
*)
codec_descriptor: pAVCodecDescriptor;
{$IFNDEF FF_API_LOWRES}
(*
* low resolution decoding, 1-> 1/2 size, 2->1/4 size
* - encoding: unused
* - decoding: Set by user.
*)
lowres: int;
{$ENDIF}
(*
* Current statistics for PTS correction.
* - decoding: maintained and used by libavcodec, not intended to be used by user apps
* - encoding: unused
*)
pts_correction_num_faulty_pts: int64_t; // Number of incorrect PTS values so far
pts_correction_num_faulty_dts: int64_t; // Number of incorrect DTS values so far
pts_correction_last_pts: int64_t; // PTS of the last frame
pts_correction_last_dts: int64_t; // DTS of the last frame
(*
* Character encoding of the input subtitles file.
* - decoding: set by user
* - encoding: unused
*)
sub_charenc: pAnsiChar;
(*
* Subtitles character encoding mode. Formats or codecs might be adjusting
* this setting (if they are doing the conversion themselves for instance).
* - decoding: set by libavcodec
* - encoding: unused
*)
sub_charenc_mode: int;
(*
* Skip processing alpha if supported by codec.
* Note that if the format uses pre-multiplied alpha (common with VP6,
* and recommended due to better video quality/compression)
* the image will look as if alpha-blended onto a black background.
* However for formats that do not use pre-multiplied alpha
* there might be serious artefacts (though e.g. libswscale currently
* assumes pre-multiplied alpha anyway).
*
* - decoding: set by user
* - encoding: unused
*)
skip_alpha: int;
(*
* Number of samples to skip after a discontinuity
* - decoding: unused
* - encoding: set by libavcodec
*)
seek_preroll: int;
{$IFNDEF FF_API_DEBUG_MV}
(*
* debug motion vectors
* - encoding: Set by user.
* - decoding: Set by user.
*)
debug_mv: int;
{$ENDIF}
(*
* custom intra quantization matrix
* - encoding: Set by user, can be NULL.
* - decoding: unused.
*)
chroma_intra_matrix: puint16_t;
(*
* dump format separator.
* can be ", " or "\n " or anything else
* - encoding: Set by user.
* - decoding: Set by user.
*)
dump_separator: puint8_t;
(*
* ',' separated list of allowed decoders.
* If NULL then all are allowed
* - encoding: unused
* - decoding: set by user
*)
codec_whitelist: pAnsiChar;
(*
* Properties of the stream that gets decoded
* - encoding: unused
* - decoding: set by libavcodec
*)
properties: unsigned;
(*
* Additional data associated with the entire coded stream.
*
* - decoding: unused
* - encoding: may be set by libavcodec after avcodec_open2().
*)
coded_side_data: pAVPacketSideData;
nb_coded_side_data: int;
(*
* A reference to the AVHWFramesContext describing the input (for encoding)
* or output (decoding) frames. The reference is set by the caller and
* afterwards owned (and freed) by libavcodec - it should never be read by
* the caller after being set.
*
* - decoding: This field should be set by the caller from the get_format()
* callback. The previous reference (if any) will always be
* unreffed by libavcodec before the get_format() call.
*
* If the default get_buffer2() is used with a hwaccel pixel
* format, then this AVHWFramesContext will be used for
* allocating the frame buffers.
*
* - encoding: For hardware encoders configured to use a hwaccel pixel
* format, this field should be set by the caller to a reference
* to the AVHWFramesContext describing input frames.
* AVHWFramesContext.format must be equal to
* AVCodecContext.pix_fmt.
*
* This field should be set before avcodec_open2() is called.
*)
hw_frames_ctx: pAVBufferRef;
(*
* Control the form of AVSubtitle.rects[N]->ass
* - decoding: set by user
* - encoding: unused
*)
sub_text_format: int;
(*
* Audio only. The amount of padding (in samples) appended by the encoder to
* the end of the audio. I.e. this number of decoded samples must be
* discarded by the caller from the end of the stream to get the original
* audio without any trailing padding.
*
* - decoding: unused
* - encoding: unused
*)
trailing_padding: int;
(*
* The number of pixels per image to maximally accept.
*
* - decoding: set by user
* - encoding: set by user
*)
max_pixels: int64_t;
(*
* A reference to the AVHWDeviceContext describing the device which will
* be used by a hardware encoder/decoder. The reference is set by the
* caller and afterwards owned (and freed) by libavcodec.
*
* This should be used if either the codec device does not require
* hardware frames or any that are used are to be allocated internally by
* libavcodec. If the user wishes to supply any of the frames used as
* encoder input or decoder output then hw_frames_ctx should be used
* instead. When hw_frames_ctx is set in get_format() for a decoder, this
* field will be ignored while decoding the associated stream segment, but
* may again be used on a following one after another get_format() call.
*
* For both encoders and decoders this field should be set before
* avcodec_open2() is called and must not be written to thereafter.
*
* Note that some decoders may require this field to be set initially in
* order to support hw_frames_ctx at all - in that case, all frames
* contexts used must be created on the same device.
*)
hw_device_ctx: pAVBufferRef;
(*
* Bit set of AV_HWACCEL_FLAG_* flags, which affect hardware accelerated
* decoding (if active).
* - encoding: unused
* - decoding: Set by user (either before avcodec_open2(), or in the
* AVCodecContext.get_format callback)
*)
hwaccel_flags: int;
(*
* Video decoding only. Certain video codecs support cropping, meaning that
* only a sub-rectangle of the decoded frame is intended for display. This
* option controls how cropping is handled by libavcodec.
*
* When set to 1 (the default), libavcodec will apply cropping internally.
* I.e. it will modify the output frame width/height fields and offset the
* data pointers (only by as much as possible while preserving alignment, or
* by the full amount if the AV_CODEC_FLAG_UNALIGNED flag is set) so that
* the frames output by the decoder refer only to the cropped area. The
* crop_* fields of the output frames will be zero.
*
* When set to 0, the width/height fields of the output frames will be set
* to the coded dimensions and the crop_* fields will describe the cropping
* rectangle. Applying the cropping is left to the caller.
*
* @warning When hardware acceleration with opaque output frames is used,
* libavcodec is unable to apply cropping from the top/left border.
*
* @note when this option is set to zero, the width/height fields of the
* AVCodecContext and output AVFrames have different meanings. The codec
* context fields store display dimensions (with the coded dimensions in
* coded_width/height), while the frame fields store the coded dimensions
* (with the display dimensions being determined by the crop_* fields).
*)
apply_cropping: int;
(*
* Video decoding only. Sets the number of extra hardware frames which
* the decoder will allocate for use by the caller. This must be set
* before avcodec_open2() is called.
*
* Some hardware decoders require all frames that they will use for
* output to be defined in advance before decoding starts. For such
* decoders, the hardware frame pool must therefore be of a fixed size.
* The extra frames set here are on top of any number that the decoder
* needs internally in order to operate normally (for example, frames
* used as reference pictures).
*)
extra_hw_frames: int;
(*
* The percentage of damaged samples to discard a frame.
*
* - decoding: set by user
* - encoding: unused
*)
discard_damaged_percentage: int;
end;
MpegEncContext = record
end;
pMpegEncContext = ^MpegEncContext;
(*
* @defgroup lavc_hwaccel AVHWAccel
*
* @note Nothing in this structure should be accessed by the user. At some
* point in future it will not be externally visible at all.
*
* @{
*)
AVHWAccel = 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 AVMEDIA_TYPE_xxx
*)
_type: AVMediaType;
(*
* Codec implemented by the hardware accelerator.
*
* See AV_CODEC_ID_xxx
*)
id: AVCodecID;
(*
* Supported pixel format.
*
* Only hardware accelerated formats are supported here.
*)
pix_fmt: AVPixelFormat;
(*
* Hardware accelerated codec capabilities.
* see AV_HWACCEL_CODEC_CAP_*
*)
capabilities: int;
(* ***************************************************************
* No fields below this line are part of the public API. They
* may not be used outside of libavcodec and can be changed and
* removed at will.
* New public fields should be added right above.
*****************************************************************
*)
(*
* Allocate a custom buffer
*)
// int (*alloc_frame)(AVCodecContext *avctx, AVFrame *frame);
alloc_frame: function(avctx: pAVCodecContext; frame: pAVFrame): int; cdecl;
(*
* 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
*)
// int (*start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
start_frame: function(avctx: pAVCodecContext; const buf: puint8_t; buf_size: uint32_t): int; cdecl;
(*
* Callback for parameter data (SPS/PPS/VPS etc).
*
* Useful for hardware decoders which keep persistent state about the
* video parameters, and need to receive any changes to update that state.
*
* @param avctx the codec context
* @param type the nal unit type
* @param buf the nal unit data buffer
* @param buf_size the size of the nal unit in bytes
* @return zero if successful, a negative value otherwise
*)
// int (*decode_params)(AVCodecContext *avctx, int type, const uint8_t *buf, uint32_t buf_size);
decode_params: function(avctx: pAVCodecContext; _type: int; const buf: puint8_t; buf_size: uint32_t): int; cdecl;
(*
* Callback for each slice.
*
* Meaningful slice information (codec specific) is guaranteed to
* be parsed at this point. This function is mandatory.
* The only exception is XvMC, that works on MB level.
*
* @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
*)
// int (*decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
decode_slice: function(avctx: pAVCodecContext; const buf: puint8_t; buf_size: uint32_t): int; 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
*)
// int (*end_frame)(AVCodecContext *avctx);
end_frame: function(avctx: pAVCodecContext): int; cdecl;
(*
* Size of per-frame hardware accelerator private data.
*
* Private data is allocated with av_mallocz() before
* AVCodecContext.get_buffer() and deallocated after
* AVCodecContext.release_buffer().
*)
frame_priv_data_size: int;
(*
* Called for every Macroblock in a slice.
*
* XvMC uses it to replace the ff_mpv_reconstruct_mb().
* Instead of decoding to raw picture, MB parameters are
* stored in an array provided by the video driver.
*
* @param s the mpeg context
*)
// void (*decode_mb)(struct MpegEncContext *s);
decode_mb: procedure(s: pMpegEncContext); cdecl;
(*
* Initialize the hwaccel private data.
*
* This will be called from ff_get_format(), after hwaccel and
* hwaccel_context are set and the hwaccel private data in AVCodecInternal
* is allocated.
*)
// int (*init)(AVCodecContext *avctx);
init: function(avctx: pAVCodecContext): int; cdecl;
(*
* Uninitialize the hwaccel private data.
*
* This will be called from get_format() or avcodec_close(), after hwaccel
* and hwaccel_context are already uninitialized.
*)
// int (*uninit)(AVCodecContext *avctx);
uninit: function(avctx: pAVCodecContext): int; cdecl;
(*
* Size of the private data to allocate in
* AVCodecInternal.hwaccel_priv_data.
*)
priv_data_size: int;
(*
* Internal hwaccel capabilities.
*)
caps_internal: int;
(*
* Fill the given hw_frames context with current codec parameters. Called
* from get_format. Refer to avcodec_get_hw_frames_parameters() for
* details.
*
* This CAN be called before AVHWAccel.init is called, and you must assume
* that avctx->hwaccel_priv_data is invalid.
*)
// int (*frame_params)(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx);
frame_params: function(avctx: pAVCodecContext; hw_frames_ctx: pAVBufferRef): int; cdecl;
end;
{$IFDEF FF_API_AVPICTURE}
(*
* Picture data structure.
*
* Up to four components can be stored into it, the last component is
* alpha.
* @deprecated use AVFrame or imgutils functions instead
*)
pAVPicture = ^AVPicture;
AVPicture = record
// attribute_deprecated
data: TAVNDPArray_puint8_t deprecated; // < pointers to the image data planes
// attribute_deprecated
linesize: TAVNDPArray_int deprecated; // < number of bytes per line
end deprecated 'use AVFrame or imgutils functions instead';
{$ENDIF}
AVSubtitleType = ( //
SUBTITLE_NONE, SUBTITLE_BITMAP, // < A bitmap, pict will be set
(*
* Plain text, the text field must be set by the decoder and is
* authoritative. ass and pict fields may contain approximations.
*)
SUBTITLE_TEXT,
(*
* Formatted text, the ass field must be set by the decoder and is
* authoritative. pict and text fields may contain approximations.
*)
SUBTITLE_ASS);
AVSubtitleRect = record
x: int; // < top left corner of pict, undefined when pict is not set
y: int; // < top left corner of pict, undefined when pict is not set
w: int; // < width of pict, undefined when pict is not set
h: int; // < height of pict, undefined when pict is not set
nb_colors: int; // < number of colors in pict, undefined when pict is not set
{$IFDEF FF_API_AVPICTURE}
(*
* @deprecated unused
*)
// attribute_deprecated
pict: AVPicture deprecated;
{$ENDIF}
(*
* data+linesize for the bitmap of this subtitle.
* Can be set for text/ass as well once they are rendered.
*)
data: puint8_t_array_4;
linesize: Tint_array_4;
_type: AVSubtitleType;
text: pAnsiChar; // < 0 terminated plain UTF-8 text
(*
* 0 terminated ASS/SSA compatible event line.
* The presentation of this is unaffected by the other values in this
* struct.
*)
ass: pAnsiChar;
flags: int;
end;
pAVSubtitleRect = ^AVSubtitleRect;
ppAVSubtitleRect = ^pAVSubtitleRect;
AVSubtitle = record
format: uint16_t; (* 0 = graphics *)
start_display_time: uint32_t; (* relative to packet pts, in ms *)
end_display_time: uint32_t; (* relative to packet pts, in ms *)
num_rects: unsigned;
rects: ppAVSubtitleRect;
pts: int64_t; // < Same as packet pts, in AV_TIME_BASE
end;
(*
* This struct describes the properties of an encoded stream.
*
* sizeof(AVCodecParameters) is not a part of the public ABI, this struct must
* be allocated with avcodec_parameters_alloc() and freed with
* avcodec_parameters_free().
*)
pAVCodecParameters = ^AVCodecParameters;
AVCodecParameters = record
(*
* General type of the encoded data.
*)
codec_type: AVMediaType;
(*
* Specific type of the encoded data (the codec used).
*)
codec_id: AVCodecID;
(*
* Additional information about the codec (corresponds to the AVI FOURCC).
*)
codec_tag: // uint32_t;
packed record
case Integer of
0:
(tag: Cardinal);
1:
(fourcc: array [0 .. 3] of AnsiChar);
2:
(fourbb: array [0 .. 3] of Byte);
end;
(*
* Extra binary data needed for initializing the decoder, codec-dependent.
*
* Must be allocated with av_malloc() and will be freed by
* avcodec_parameters_free(). The allocated size of extradata must be at
* least extradata_size + AV_INPUT_BUFFER_PADDING_SIZE, with the padding
* bytes zeroed.
*)
extradata: puint8_t;
(*
* Size of the extradata content in bytes.
*)
extradata_size: int;
(*
* - video: the pixel format, the value corresponds to enum AVPixelFormat.
* - audio: the sample format, the value corresponds to enum AVSampleFormat.
*)
format: int;
(*
* The average bitrate of the encoded data (in bits per second).
*)
bit_rate: int64_t;
(*
* The number of bits per sample in the codedwords.
*
* This is basically the bitrate per sample. It is mandatory for a bunch of
* formats to actually decode them. It's the number of bits for one sample in
* the actual coded bitstream.
*
* This could be for example 4 for ADPCM
* For PCM formats this matches bits_per_raw_sample
* Can be 0
*)
bits_per_coded_sample: int;
(*
* This is the number of valid bits in each output sample. If the
* sample format has more bits, the least significant bits are additional
* padding bits, which are always 0. Use right shifts to reduce the sample
* to its actual size. For example, audio formats with 24 bit samples will
* have bits_per_raw_sample set to 24, and format set to AV_SAMPLE_FMT_S32.
* To get the original sample use "(int32_t)sample >> 8"."
*
* For ADPCM this might be 12 or 16 or similar
* Can be 0
*)
bits_per_raw_sample: int;
(*
* Codec-specific bitstream restrictions that the stream conforms to.
*)
profile: int;
level: int;
(*
* Video only. The dimensions of the video frame in pixels.
*)
width: int;
height: int;
(*
* Video only. The aspect ratio (width / height) which a single pixel
* should have when displayed.
*
* When the aspect ratio is unknown / undefined, the numerator should be
* set to 0 (the denominator may have any value).
*)
sample_aspect_ratio: AVRational;
(*
* Video only. The order of the fields in interlaced video.
*)
field_order: AVFieldOrder;
(*
* Video only. Additional colorspace characteristics.
*)
color_range: AVColorRange;
color_primaries: AVColorPrimaries;
color_trc: AVColorTransferCharacteristic;
color_space: AVColorSpace;
chroma_location: AVChromaLocation;
(*
* Video only. Number of delayed frames.
*)
video_delay: int;
(*
* Audio only. The channel layout bitmask. May be 0 if the channel layout is
* unknown or unspecified, otherwise the number of bits set must be equal to
* the channels field.
*)
channel_layout: uint64_t;
(*
* Audio only. The number of audio channels.
*)
channels: int;
(*
* Audio only. The number of audio samples per second.
*)
sample_rate: int;
(*
* Audio only. The number of bytes per coded audio frame, required by some
* formats.
*
* Corresponds to nBlockAlign in WAVEFORMATEX.
*)
block_align: int;
(*
* Audio only. Audio frame size, if known. Required by some formats to be static.
*)
frame_size: int;
(*
* Audio only. The amount of padding (in samples) inserted by the encoder at
* the beginning of the audio. I.e. this number of leading decoded samples
* must be discarded by the caller to get the original audio without leading
* padding.
*)
initial_padding: int;
(*
* Audio only. The amount of padding (in samples) appended by the encoder to
* the end of the audio. I.e. this number of decoded samples must be
* discarded by the caller from the end of the stream to get the original
* audio without any trailing padding.
*)
trailing_padding: int;
(*
* Audio only. Number of samples to skip after a discontinuity.
*)
seek_preroll: int;
end;
{$IFDEF FF_API_CODEC_GET_SET}
(*
* Accessors for some AVCodecContext fields. These used to be provided for ABI
* compatibility, and do not need to be used anymore.
*)
// attribute_deprecated
// AVRational av_codec_get_pkt_timebase(const AVCodecContext * avctx);
function av_codec_get_pkt_timebase(const avctx: pAVCodecContext): AVRational; cdecl; external avcodec_dll; deprecated;
// attribute_deprecated
// void av_codec_set_pkt_timebase(AVCodecContext * avctx, AVRational val);
procedure av_codec_set_pkt_timebase(avctx: pAVCodecContext; val: AVRational); cdecl; external avcodec_dll; deprecated;
// attribute_deprecated
// const AVCodecDescriptor * av_codec_get_codec_descriptor(const AVCodecContext * avctx);
function av_codec_get_codec_descriptor(const avctx: pAVCodecContext): pAVCodecDescriptor; cdecl; external avcodec_dll;
// attribute_deprecated
// void av_codec_set_codec_descriptor(AVCodecContext * avctx, const AVCodecDescriptor * desc);
procedure av_codec_set_codec_descriptor(avctx: pAVCodecContext; const desc: pAVCodecDescriptor); cdecl; external avcodec_dll;
// attribute_deprecated
// unsigned av_codec_get_codec_properties(const AVCodecContext * avctx);
function av_codec_get_codec_properties(const avctx: pAVCodecContext): unsigned; cdecl; external avcodec_dll; deprecated;
{$IFDEF FF_API_LOWRES}
// attribute_deprecated
// int av_codec_get_lowres(const AVCodecContext *avctx);
function av_codec_get_lowres(const avctx: pAVCodecContext): int; cdecl; external avcodec_dll; deprecated;
// attribute_deprecated
// void av_codec_set_lowres(AVCodecContext *avctx, int val);
procedure av_codec_set_lowres(avctx: pAVCodecContext; val: int); cdecl; external avcodec_dll; deprecated;
{$ENDIF}
// attribute_deprecated
// int av_codec_get_seek_preroll(const AVCodecContext * avctx);
function av_codec_get_seek_preroll(const avctx: pAVCodecContext): int; cdecl; external avcodec_dll; deprecated;
// attribute_deprecated
// void av_codec_set_seek_preroll(AVCodecContext * avctx, int val);
procedure av_codec_set_seek_preroll(avctx: pAVCodecContext; val: int); cdecl; external avcodec_dll; deprecated;
// attribute_deprecated
// uint16_t * av_codec_get_chroma_intra_matrix(const AVCodecContext * avctx);
function av_codec_get_chroma_intra_matrix(const avctx: pAVCodecContext): puint16_t; cdecl; external avcodec_dll; deprecated;
// attribute_deprecated
// void av_codec_set_chroma_intra_matrix(AVCodecContext * avctx, uint16_t * val);
procedure av_codec_set_chroma_intra_matrix(avctx: pAVCodecContext; val: puint16_t); cdecl; external avcodec_dll; deprecated;
{$ENDIF}
{$IFDEF FF_API_CODEC_GET_SET}
// attribute_deprecated
// int av_codec_get_max_lowres(const avcodec * codec);
function av_codec_get_max_lowres(const codec: pAVCodec): int; cdecl; external avcodec_dll; deprecated;
{$ENDIF}
(*
* Retrieve supported hardware configurations for a codec.
*
* Values of index from zero to some maximum return the indexed configuration
* descriptor; all other values return NULL. If the codec does not support
* any hardware configurations then it will always return NULL.
*)
// const AVCodecHWConfig * avcodec_get_hw_config(const avcodec * codec, int index);
function avcodec_get_hw_config(const codec: pAVCodec; index: int): pAVCodecHWConfig; cdecl; external avcodec_dll;
const
AV_PKT_DATA_QUALITY_FACTOR: AVPacketSideDataType = AV_PKT_DATA_QUALITY_STATS; // DEPRECATED
(*
* Iterate over all registered codecs.
*
* @param opaque a pointer where libavcodec will store the iteration state. Must
* point to NULL to start the iteration.
*
* @return the next registered codec or NULL when the iteration is
* finished
*)
// const avcodec * av_codec_iterate(void * * opaque);
function av_codec_iterate(var opaque: Pointer): pAVCodec; cdecl; external avcodec_dll;
{$IFDEF FF_API_NEXT}
(*
* 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.
*)
// attribute_deprecated avcodec * av_codec_next(const avcodec * c);
function av_codec_next(const c: pAVCodec): pAVCodec; cdecl; external avcodec_dll;
{$ENDIF}
(*
* Return the LIBAVCODEC_VERSION_INT constant.
*)
// unsigned avcodec_version(void);
function avcodec_version(): unsigned; cdecl; external avcodec_dll;
(*
* Return the libavcodec build-time configuration.
*)
// const char * avcodec_configuration(void);
function avcodec_configuration(): pAnsiChar; cdecl; external avcodec_dll;
(*
* Return the libavcodec license.
*)
// const char * avcodec_license(void);
function avcodec_license(): pAnsiChar; cdecl; external avcodec_dll;
{$IFDEF FF_API_NEXT}
(*
* Register the codec codec and initialize libavcodec.
*
* @warning either this function or avcodec_register_all() must be called
* before any other libavcodec functions.
*
* @see avcodec_register_all()
*)
// attribute_deprecated void avcodec_register(avcodec * codec);
procedure avcodec_register(codec: pAVCodec); cdecl; external avcodec_dll; deprecated;
(*
* 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 avcodec_register
* @see av_register_codec_parser
* @see av_register_bitstream_filter
*)
// attribute_deprecated void avcodec_register_all(void);
procedure avcodec_register_all(); cdecl; external avcodec_dll; deprecated;
{$ENDIF}
(*
* Allocate an AVCodecContext and set its fields to default values. The
* resulting struct should be freed with avcodec_free_context().
*
* @param codec if non-NULL, allocate private data and initialize defaults
* for the given codec. It is illegal to then call avcodec_open2()
* with a different codec.
* If NULL, then the codec-specific defaults won't be initialized,
* which may result in suboptimal default settings (this is
* important mainly for encoders, e.g. libx264).
*
* @return An AVCodecContext filled with default values or NULL on failure.
*)
// AVCodecContext * avcodec_alloc_context3(const avcodec * codec);
function avcodec_alloc_context3(const codec: pAVCodec): pAVCodecContext; cdecl; external avcodec_dll;
(*
* Free the codec context and everything associated with it and write NULL to
* the provided pointer.
*)
// void avcodec_free_context(AVCodecContext * * avctx);
procedure avcodec_free_context(var avctx: pAVCodecContext); cdecl; external avcodec_dll;
{$IFDEF FF_API_GET_CONTEXT_DEFAULTS}
(*
* @deprecated This function should not be used, as closing and opening a codec
* context multiple time is not supported. A new codec context should be
* allocated for each new use.
*)
// int avcodec_get_context_defaults3(AVCodecContext * s, const avcodec * codec);
function avcodec_get_context_defaults3(s: pAVCodecContext; const codec: pAVCodec): int; cdecl; external avcodec_dll;
{$ENDIF}
(*
* Get the AVClass for AVCodecContext. It can be used in combination with
* AV_OPT_SEARCH_FAKE_OBJ for examining options.
*
* @see av_opt_find().
*)
// const AVClass * avcodec_get_class(void);
function avcodec_get_class(): pAVClass; cdecl; external avcodec_dll;
{$IFDEF FF_API_COPY_CONTEXT}
(*
* Get the AVClass for AVFrame. It can be used in combination with
* AV_OPT_SEARCH_FAKE_OBJ for examining options.
*
* @see av_opt_find().
*)
// const AVClass * avcodec_get_frame_class(void);
function avcodec_get_frame_class(): pAVClass; cdecl; external avcodec_dll;
(*
* Get the AVClass for AVSubtitleRect. It can be used in combination with
* AV_OPT_SEARCH_FAKE_OBJ for examining options.
*
* @see av_opt_find().
*)
// const AVClass * avcodec_get_subtitle_rect_class(void);
function avcodec_get_subtitle_rect_class(): pAVClass; cdecl; external avcodec_dll;
(*
* Copy the settings of the source AVCodecContext into the destination
* AVCodecContext. The resulting destination codec context will be
* unopened, i.e. you are required to call avcodec_open2() before you
* can use this AVCodecContext to decode/encode video/audio data.
*
* @param dest target codec context, should be initialized with
* avcodec_alloc_context3(NULL), but otherwise uninitialized
* @param src source codec context
* @return AVERROR() on error (e.g. memory allocation error), 0 on success
*
* @deprecated The semantics of this function are ill-defined and it should not
* be used. If you need to transfer the stream parameters from one codec context
* to another, use an intermediate AVCodecParameters instance and the
* avcodec_parameters_from_context() / avcodec_parameters_to_context()
* functions.
*)
// attribute_deprecated int avcodec_copy_context(AVCodecContext * dest, const AVCodecContext * src);
function avcodec_copy_context(dest: pAVCodecContext; const src: pAVCodecContext): int; cdecl; external avcodec_dll; deprecated;
{$ENDIF}
(*
* Allocate a new AVCodecParameters and set its fields to default values
* (unknown/invalid/0). The returned struct must be freed with
* avcodec_parameters_free().
*)
// AVCodecParameters * avcodec_parameters_alloc(void);
function avcodec_parameters_alloc(): pAVCodecParameters; cdecl; external avcodec_dll;
(*
* Free an AVCodecParameters instance and everything associated with it and
* write NULL to the supplied pointer.
*)
// void avcodec_parameters_free(AVCodecParameters * * par);
procedure avcodec_parameters_free(var par: pAVCodecParameters); cdecl; external avcodec_dll;
(*
* Copy the contents of src to dst. Any allocated fields in dst are freed and
* replaced with newly allocated duplicates of the corresponding fields in src.
*
* @return >= 0 on success, a negative AVERROR code on failure.
*)
// int avcodec_parameters_copy(AVCodecParameters * dst, const AVCodecParameters * src);
function avcodec_parameters_copy(dst: pAVCodecParameters; const src: pAVCodecParameters): int; cdecl; external avcodec_dll;
(*
* Fill the parameters struct based on the values from the supplied codec
* context. Any allocated fields in par are freed and replaced with duplicates
* of the corresponding fields in codec.
*
* @return >= 0 on success, a negative AVERROR code on failure
*)
// int avcodec_parameters_from_context(AVCodecParameters * par, const AVCodecContext * codec);
function avcodec_parameters_from_context(par: pAVCodecParameters; const codec: pAVCodecContext): int; cdecl; external avcodec_dll;
(*
* Fill the codec context based on the values from the supplied codec
* parameters. Any allocated fields in codec that have a corresponding field in
* par are freed and replaced with duplicates of the corresponding field in par.
* Fields in codec that do not have a counterpart in par are not touched.
*
* @return >= 0 on success, a negative AVERROR code on failure.
*)
// int avcodec_parameters_to_context(AVCodecContext * codec, const AVCodecParameters * par);
function avcodec_parameters_to_context(codec: pAVCodecContext; const par: pAVCodecParameters): int; cdecl; external avcodec_dll;
(*
* Initialize the AVCodecContext to use the given AVCodec. Prior to using this
* function the context has to be allocated with avcodec_alloc_context3().
*
* The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
* avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
* retrieving a codec.
*
* @warning This function is not thread safe!
*
* @note Always call this function before using decoding routines (such as
* @ref avcodec_receive_frame()).
*
* @code
* avcodec_register_all();
* av_dict_set(&opts, "b", "2.5M", 0);
* codec = avcodec_find_decoder(AV_CODEC_ID_H264);
* if (!codec)
* exit(1);
*
* context = avcodec_alloc_context3(codec);
*
* if (avcodec_open2(context, codec, opts) < 0)
* exit(1);
* @endcode
*
* @param avctx The context to initialize.
* @param codec The codec to open this context for. If a non-NULL codec has been
* previously passed to avcodec_alloc_context3() or
* for this context, then this parameter MUST be either NULL or
* equal to the previously passed codec.
* @param options A dictionary filled with AVCodecContext and codec-private options.
* On return this object will be filled with options that were not found.
*
* @return zero on success, a negative value on error
* @see avcodec_alloc_context3(), avcodec_find_decoder(), avcodec_find_encoder(),
* av_dict_set(), av_opt_find().
*)
// int avcodec_open2(AVCodecContext * avctx, const avcodec *codec, AVDictionary **options);
function avcodec_open2(avctx: pAVCodecContext; const codec: pAVCodec; options: ppAVDictionary): int; cdecl; external avcodec_dll;
(*
* Close a given AVCodecContext and free all the data associated with it
* (but not the AVCodecContext itself).
*
* Calling this function on an AVCodecContext that hasn't been opened will free
* the codec-specific data allocated in avcodec_alloc_context3() with a non-NULL
* codec. Subsequent calls will do nothing.
*
* @note Do not use this function. Use avcodec_free_context() to destroy a
* codec context (either open or closed). Opening and closing a codec context
* multiple times is not supported anymore -- use multiple codec contexts
* instead.
*)
// int avcodec_close(AVCodecContext * avctx);
function avcodec_close(avctx: pAVCodecContext): int; cdecl; external avcodec_dll;
(*
* Free all allocated data in the given subtitle struct.
*
* @param sub AVSubtitle to free.
*)
// void avsubtitle_free(AVSubtitle * sub);
procedure avsubtitle_free(sub: pAVSubtitle); cdecl; external avcodec_dll;
(*
* Allocate an AVPacket and set its fields to default values. The resulting
* struct must be freed using av_packet_free().
*
* @return An AVPacket filled with default values or NULL on failure.
*
* @note this only allocates the AVPacket itself, not the data buffers. Those
* must be allocated through other means such as av_new_packet.
*
* @see av_new_packet
*)
// AVPacket *av_packet_alloc(void);
function av_packet_alloc(): pAVPacket; cdecl; external avcodec_dll;
(*
* Create a new packet that references the same data as src.
*
* This is a shortcut for av_packet_alloc()+av_packet_ref().
*
* @return newly created AVPacket on success, NULL on error.
*
* @see av_packet_alloc
* @see av_packet_ref
*)
// AVPacket * av_packet_clone(const AVPacket * src);
function av_packet_clone(const src: pAVPacket): pAVPacket; cdecl; external avcodec_dll;
(*
* Free the packet, if the packet is reference counted, it will be
* unreferenced first.
*
* @param pkt packet to be freed. The pointer will be set to NULL.
* @note passing NULL is a no-op.
*)
// void av_packet_free(AVPacket * * pkt);
procedure av_packet_free(var pkt: pAVPacket); cdecl; external avcodec_dll;
(*
* Initialize optional fields of a packet with default values.
*
* Note, this does not touch the data and size members, which have to be
* initialized separately.
*
* @param pkt packet
*)
// void av_init_packet(AVPacket * pkt);
procedure av_init_packet(pkt: pAVPacket); cdecl; overload; external avcodec_dll;
procedure av_init_packet(var pkt: AVPacket); cdecl; overload; external avcodec_dll;
(*
* 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
*)
// int av_new_packet(AVPacket * pkt, int size);
function av_new_packet(pkt: pAVPacket; size: int): int; cdecl; external avcodec_dll;
(*
* Reduce packet size, correctly zeroing padding
*
* @param pkt packet
* @param size new size
*)
// void av_shrink_packet(AVPacket * pkt, int size);
procedure av_shrink_packet(pkt: pAVPacket; size: int); cdecl; external avcodec_dll;
(*
* Increase packet size, correctly zeroing padding
*
* @param pkt packet
* @param grow_by number of bytes by which to increase the size of the packet
*)
// int av_grow_packet(AVPacket * pkt, int grow_by);
function av_grow_packet(pkt: pAVPacket; grow_by: int): int; cdecl; external avcodec_dll;
(*
* Initialize a reference-counted packet from av_malloc()ed data.
*
* @param pkt packet to be initialized. This function will set the data, size,
* and buf fields, all others are left untouched.
* @param data Data allocated by av_malloc() to be used as packet data. If this
* function returns successfully, the data is owned by the underlying AVBuffer.
* The caller may not access the data through other means.
* @param size size of data in bytes, without the padding. I.e. the full buffer
* size is assumed to be size + AV_INPUT_BUFFER_PADDING_SIZE.
*
* @return 0 on success, a negative AVERROR on error
*)
// int av_packet_from_data(AVPacket * pkt, uint8_t * data, int size);
function av_packet_from_data(pkt: pAVPacket; data: puint8_t; size: int): int; cdecl; external avcodec_dll;
{$IFDEF FF_API_AVPACKET_OLD_API}
(*
* @warning This is a hack - the packet memory allocation stuff is broken. The
* packet is allocated if it was not really allocated.
*
* @deprecated Use av_packet_ref or av_packet_make_refcounted
*)
// attribute_deprecated int av_dup_packet(AVPacket * pkt);
function av_dup_packet(pkt: pAVPacket): int; cdecl; external avcodec_dll; deprecated;
(*
* Copy packet, including contents
*
* @return 0 on success, negative AVERROR on fail
*
* @deprecated Use av_packet_ref
*)
// attribute_deprecated int av_copy_packet(AVPacket * dst, const AVPacket * src);
function av_copy_packet(dst: pAVPacket; const src: pAVPacket): int; cdecl; external avcodec_dll; deprecated;
(*
* Copy packet side data
*
* @return 0 on success, negative AVERROR on fail
*
* @deprecated Use av_packet_copy_props
*)
// attribute_deprecated int av_copy_packet_side_data(AVPacket * dst, const AVPacket * src);
function av_copy_packet_side_data(dst: pAVPacket; const src: pAVPacket): int; cdecl; external avcodec_dll; deprecated;
(*
* Free a packet.
*
* @deprecated Use av_packet_unref
*
* @param pkt packet to free
*)
// attribute_deprecated void av_free_packet(AVPacket * pkt);
procedure av_free_packet(pkt: pAVPacket); cdecl; overload; external avcodec_dll; deprecated;
procedure av_free_packet(Var pkt: AVPacket); cdecl; overload; external avcodec_dll; deprecated;
{$ENDIF}
(*
* Allocate new information of a packet.
*
* @param pkt packet
* @param type side information type
* @param size side information size
* @return pointer to fresh allocated data or NULL otherwise
*)
// uint8_t * av_packet_new_side_data(AVPacket * pkt, enum AVPacketSideDataType type , int size);
function av_packet_new_side_data(pkt: pAVPacket; _type: AVPacketSideDataType; size: int): puint8_t; cdecl; external avcodec_dll;
(*
* Wrap an existing array as a packet side data.
*
* @param pkt packet
* @param type side information type
* @param data the side data array. It must be allocated with the av_malloc()
* family of functions. The ownership of the data is transferred to
* pkt.
* @param size side information size
* @return a non-negative number on success, a negative AVERROR code on
* failure. On failure, the packet is unchanged and the data remains
* owned by the caller.
*)
// int av_packet_add_side_data(AVPacket * pkt, enum AVPacketSideDataType type , uint8_t * data, size_t size);
function av_packet_add_side_data(pkt: pAVPacket; _type: AVPacketSideDataType; data: puint8_t; size: size_t): int; cdecl; external avcodec_dll;
(*
* Shrink the already allocated side data buffer
*
* @param pkt packet
* @param type side information type
* @param size new side information size
* @return 0 on success, < 0 on failure
*)
// int av_packet_shrink_side_data(AVPacket * pkt, enum AVPacketSideDataType type , int size);
function av_packet_shrink_side_data(pkt: pAVPacket; _type: AVPacketSideDataType; size: int): int; cdecl; external avcodec_dll;
(*
* Get side information from packet.
*
* @param pkt packet
* @param type desired side information type
* @param size pointer for side information size to store (optional)
* @return pointer to data if present or NULL otherwise
*)
// uint8_t * av_packet_get_side_data(const AVPacket * pkt, enum AVPacketSideDataType type , int * size);
function av_packet_get_side_data(const pkt: pAVPacket; _type: AVPacketSideDataType; size: pInt): puint8_t; cdecl; external avcodec_dll;
{$IFDEF FF_API_MERGE_SD_API}
// attribute_deprecated int av_packet_merge_side_data(AVPacket * pkt);
function av_packet_merge_side_data(pkt: pAVPacket): int; cdecl; external avcodec_dll; deprecated;
// attribute_deprecated int av_packet_split_side_data(AVPacket * pkt);
function av_packet_split_side_data(pkt: pAVPacket): int; cdecl; external avcodec_dll; deprecated;
{$ENDIF}
// const char * av_packet_side_data_name(enum AVPacketSideDataType type);
function av_packet_side_data_name(_type: AVPacketSideDataType): pAnsiChar; cdecl; external avcodec_dll;
(*
* Pack a dictionary for use in side_data.
*
* @param dict The dictionary to pack.
* @param size pointer to store the size of the returned data
* @return pointer to data if successful, NULL otherwise
*)
// uint8_t * av_packet_pack_dictionary(AVDictionary * dict, int * size);
function av_packet_pack_dictionary(dict: pAVDictionary; size: pInt): puint8_t; cdecl; external avcodec_dll;
(*
* Unpack a dictionary from side_data.
*
* @param data data from side_data
* @param size size of the data
* @param dict the metadata storage dictionary
* @return 0 on success, < 0 on failure
*)
// int av_packet_unpack_dictionary(const uint8_t * data, int size, AVDictionary **dict);
function av_packet_unpack_dictionary(const data: puint8_t; size: int; var dict: pAVDictionary): int; cdecl; external avcodec_dll;
(*
* Convenience function to free all the side data stored.
* All the other fields stay untouched.
*
* @param pkt packet
*)
// void av_packet_free_side_data(AVPacket * pkt);
procedure av_packet_free_side_data(pkt: pAVPacket); cdecl; external avcodec_dll;
(*
* Setup a new reference to the data described by a given packet
*
* If src is reference-counted, setup dst as a new reference to the
* buffer in src. Otherwise allocate a new buffer in dst and copy the
* data from src into it.
*
* All the other fields are copied from src.
*
* @see av_packet_unref
*
* @param dst Destination packet
* @param src Source packet
*
* @return 0 on success, a negative AVERROR on error.
*)
// int av_packet_ref(AVPacket * dst, const AVPacket * src);
function av_packet_ref(dst: pAVPacket; const src: pAVPacket): int; cdecl; external avcodec_dll;
(*
* Wipe the packet.
*
* Unreference the buffer referenced by the packet and reset the
* remaining packet fields to their default values.
*
* @param pkt The packet to be unreferenced.
*)
// void av_packet_unref(AVPacket * pkt);
procedure av_packet_unref(pkt: pAVPacket); cdecl; external avcodec_dll; overload;
procedure av_packet_unref(var pkt: AVPacket); cdecl; external avcodec_dll; overload;
(*
* Move every field in src to dst and reset src.
*
* @see av_packet_unref
*
* @param src Source packet, will be reset
* @param dst Destination packet
*)
// void av_packet_move_ref(AVPacket * dst, AVPacket * src);
procedure av_packet_move_ref(dst: pAVPacket; src: pAVPacket); cdecl; external avcodec_dll; overload;
procedure av_packet_move_ref(dst: pAVPacket; var src: AVPacket); cdecl; external avcodec_dll; overload;
(*
* Copy only "properties" fields from src to dst.
*
* Properties for the purpose of this function are all the fields
* beside those related to the packet data (buf, data, size)
*
* @param dst Destination packet
* @param src Source packet
*
* @return 0 on success AVERROR on failure.
*)
// int av_packet_copy_props(AVPacket * dst, const AVPacket * src);
function av_packet_copy_props(dst: pAVPacket; const src: pAVPacket): int; cdecl; external avcodec_dll;
(*
* Ensure the data described by a given packet is reference counted.
*
* @note This function does not ensure that the reference will be writable.
* Use av_packet_make_writable instead for that purpose.
*
* @see av_packet_ref
* @see av_packet_make_writable
*
* @param pkt packet whose data should be made reference counted.
*
* @return 0 on success, a negative AVERROR on error. On failure, the
* packet is unchanged.
*)
// int av_packet_make_refcounted(AVPacket * pkt);
function av_packet_make_refcounted(pkt: pAVPacket): int; cdecl; external avcodec_dll;
(*
* Create a writable reference for the data described by a given packet,
* avoiding data copy if possible.
*
* @param pkt Packet whose data should be made writable.
*
* @return 0 on success, a negative AVERROR on failure. On failure, the
* packet is unchanged.
*)
// int av_packet_make_writable(AVPacket * pkt);
function av_packet_make_writable(pkt: pAVPacket): int; cdecl; external avcodec_dll;
(*
* Convert valid timing fields (timestamps / durations) in a packet from one
* timebase to another. Timestamps with unknown values (AV_NOPTS_VALUE) will be
* ignored.
*
* @param pkt packet on which the conversion will be performed
* @param tb_src source timebase, in which the timing fields in pkt are
* expressed
* @param tb_dst destination timebase, to which the timing fields will be
* converted
*)
// void av_packet_rescale_ts(AVPacket * pkt, AVRational tb_src, AVRational tb_dst);
procedure av_packet_rescale_ts(pkt: pAVPacket; tb_src: AVRational; tb_dst: AVRational); cdecl; external avcodec_dll;
(*
* Find a registered decoder with a matching codec ID.
*
* @param id AVCodecID of the requested decoder
* @return A decoder if one was found, NULL otherwise.
*)
// avcodec * avcodec_find_decoder(enum AVCodecID id);
function avcodec_find_decoder(id: AVCodecID): pAVCodec; cdecl; external avcodec_dll;
(*
* Find a registered decoder with the specified name.
*
* @param name name of the requested decoder
* @return A decoder if one was found, NULL otherwise.
*)
// avcodec * avcodec_find_decoder_by_name(const char * name);
function avcodec_find_decoder_by_name(const name: pAnsiChar): pAVCodec; cdecl; external avcodec_dll;
(*
* The default callback for AVCodecContext.get_buffer2(). It is made public so
* it can be called by custom get_buffer2() implementations for decoders without
* AV_CODEC_CAP_DR1 set.
*)
// int avcodec_default_get_buffer2(AVCodecContext * s, AVFrame * frame, int flags);
function avcodec_default_get_buffer2(s: pAVCodecContext; frame: pAVFrame; flags: int): int; cdecl; external avcodec_dll;
(*
* Modify width and height values so that they will result in a memory
* buffer that is acceptable for the codec if you do not use any horizontal
* padding.
*
* May only be used if a codec with AV_CODEC_CAP_DR1 has been opened.
*)
// void avcodec_align_dimensions(AVCodecContext * s, int * width, int * height);
procedure avcodec_align_dimensions(s: pAVCodecContext; width: pInt; height: pInt); cdecl; external avcodec_dll;
(*
* Modify width and height values so that they will result in a memory
* buffer that is acceptable for the codec if you also ensure that all
* line sizes are a multiple of the respective linesize_align[i].
*
* May only be used if a codec with AV_CODEC_CAP_DR1 has been opened.
*)
// void avcodec_align_dimensions2(AVCodecContext * s, int * width, int * height, int linesize_align[AV_NUM_DATA_POINTERS]);
procedure avcodec_align_dimensions2(s: pAVCodecContext; var width: int; var height: int; linesize_align: TAVNDPArray_int); cdecl; external avcodec_dll;
(*
* Converts AVChromaLocation to swscale x/y chroma position.
*
* The positions represent the chroma (0,0) position in a coordinates system
* with luma (0,0) representing the origin and luma(1,1) representing 256,256
*
* @param xpos horizontal chroma sample position
* @param ypos vertical chroma sample position
*)
// int avcodec_enum_to_chroma_pos(int * xpos, int * ypos, enum AVChromaLocation pos);
function avcodec_enum_to_chroma_pos(var xpos: int; ypos: int; pos: AVChromaLocation): int; cdecl; external avcodec_dll;
(*
* Converts swscale x/y chroma position to AVChromaLocation.
*
* The positions represent the chroma (0,0) position in a coordinates system
* with luma (0,0) representing the origin and luma(1,1) representing 256,256
*
* @param xpos horizontal chroma sample position
* @param ypos vertical chroma sample position
*)
// enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos);
function avcodec_chroma_pos_to_enum(xpos, ypos: int): AVChromaLocation; cdecl; external avcodec_dll;
(*
* Decode the audio frame of size avpkt->size from avpkt->data into frame.
*
* Some decoders may support multiple frames in a single AVPacket. Such
* decoders would then just decode the first frame and the return value would be
* less than the packet size. In this case, avcodec_decode_audio4 has to be
* called again with an AVPacket containing the remaining data in order to
* decode the second frame, etc... Even if no frames are returned, the packet
* needs to be fed to the decoder with remaining data until it is completely
* consumed or an error occurs.
*
* Some decoders (those marked with AV_CODEC_CAP_DELAY) have a delay between input
* and output. This means that for some packets they will not immediately
* produce decoded output and need to be flushed at the end of decoding to get
* all the decoded data. Flushing is done by calling this function with packets
* with avpkt->data set to NULL and avpkt->size set to 0 until it stops
* returning samples. It is safe to flush even those decoders that are not
* marked with AV_CODEC_CAP_DELAY, then no samples will be returned.
*
* @warning The input buffer, avpkt->data must be AV_INPUT_BUFFER_PADDING_SIZE
* larger than the actual read bytes because some optimized bitstream
* readers read 32 or 64 bits at once and could read over the end.
*
* @note The AVCodecContext MUST have been opened with @ref avcodec_open2()
* before packets may be fed to the decoder.
*
* @param avctx the codec context
* @param[out] frame The AVFrame in which to store decoded audio samples.
* The decoder will allocate a buffer for the decoded frame by
* calling the AVCodecContext.get_buffer2() callback.
* When AVCodecContext.refcounted_frames is set to 1, the frame is
* reference counted and the returned reference belongs to the
* caller. The caller must release the frame using av_frame_unref()
* when the frame is no longer needed. The caller may safely write
* to the frame if av_frame_is_writable() returns 1.
* When AVCodecContext.refcounted_frames is set to 0, the returned
* reference belongs to the decoder and is valid only until the
* next call to this function or until closing or flushing the
* decoder. The caller may not write to it.
* @param[out] got_frame_ptr Zero if no frame could be decoded, otherwise it is
* non-zero. Note that this field being set to zero
* does not mean that an error has occurred. For
* decoders with AV_CODEC_CAP_DELAY set, no given decode
* call is guaranteed to produce a frame.
* @param[in] avpkt The input AVPacket containing the input buffer.
* At least avpkt->data and avpkt->size should be set. Some
* decoders might also require additional fields to be set.
* @return A negative error code is returned if an error occurred during
* decoding, otherwise the number of bytes consumed from the input
* AVPacket is returned.
*
* @deprecated Use avcodec_send_packet() and avcodec_receive_frame().
*)
// attribute_deprecated int avcodec_decode_audio4(AVCodecContext * avctx, AVFrame * frame, int * got_frame_ptr, const AVPacket * avpkt);
function avcodec_decode_audio4(avctx: pAVCodecContext; frame: pAVFrame; var got_frame_ptr: int; const avpkt: pAVPacket): int; cdecl; external avcodec_dll;
deprecated;
(*
* Decode the video frame of size avpkt->size from avpkt->data into picture.
* Some decoders may support multiple frames in a single AVPacket, such
* decoders would then just decode the first frame.
*
* @warning The input buffer must be AV_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 Codecs which have the AV_CODEC_CAP_DELAY capability set have a delay
* between input and output, these need to be fed with avpkt->data=NULL,
* avpkt->size=0 at the end to return the remaining frames.
*
* @note The AVCodecContext MUST have been opened with @ref avcodec_open2()
* before packets may be fed to the decoder.
*
* @param avctx the codec context
* @param[out] picture The AVFrame in which the decoded video frame will be stored.
* Use av_frame_alloc() to get an AVFrame. The codec will
* allocate memory for the actual bitmap by calling the
* AVCodecContext.get_buffer2() callback.
* When AVCodecContext.refcounted_frames is set to 1, the frame is
* reference counted and the returned reference belongs to the
* caller. The caller must release the frame using av_frame_unref()
* when the frame is no longer needed. The caller may safely write
* to the frame if av_frame_is_writable() returns 1.
* When AVCodecContext.refcounted_frames is set to 0, the returned
* reference belongs to the decoder and is valid only until the
* next call to this function or until closing or flushing the
* decoder. The caller may not write to it.
*
* @param[in] avpkt The input AVPacket containing the input buffer.
* You can create such packet with av_init_packet() and by then setting
* data and size, some decoders might in addition need other fields like
* flags&AV_PKT_FLAG_KEY. All decoders are designed to use the least
* fields possible.
* @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
* @return On error a negative value is returned, otherwise the number of bytes
* used or zero if no frame could be decompressed.
*
* @deprecated Use avcodec_send_packet() and avcodec_receive_frame().
*)
// attribute_deprecated int avcodec_decode_video2(AVCodecContext * avctx, AVFrame * picture, int * got_picture_ptr, const AVPacket * avpkt);
function avcodec_decode_video2(avctx: pAVCodecContext; picture: pAVFrame; var got_picture_ptr: int; const avpkt: pAVPacket): int; cdecl; external avcodec_dll;
deprecated;
(*
* Decode a subtitle message.
* Return a negative value on error, otherwise return the number of bytes used.
* If no subtitle could be decompressed, got_sub_ptr is zero.
* Otherwise, the subtitle is stored in *sub.
* Note that AV_CODEC_CAP_DR1 is not available for subtitle codecs. This is for
* simplicity, because the performance difference is expect to be negligible
* and reusing a get_buffer written for video codecs would probably perform badly
* due to a potentially very different allocation pattern.
*
* Some decoders (those marked with AV_CODEC_CAP_DELAY) have a delay between input
* and output. This means that for some packets they will not immediately
* produce decoded output and need to be flushed at the end of decoding to get
* all the decoded data. Flushing is done by calling this function with packets
* with avpkt->data set to NULL and avpkt->size set to 0 until it stops
* returning subtitles. It is safe to flush even those decoders that are not
* marked with AV_CODEC_CAP_DELAY, then no subtitles will be returned.
*
* @note The AVCodecContext MUST have been opened with @ref avcodec_open2()
* before packets may be fed to the decoder.
*
* @param avctx the codec context
* @param[out] sub The Preallocated AVSubtitle in which the decoded subtitle will be stored,
* must be freed with avsubtitle_free if *got_sub_ptr is set.
* @param[in,out] got_sub_ptr Zero if no subtitle could be decompressed, otherwise, it is nonzero.
* @param[in] avpkt The input AVPacket containing the input buffer.
*)
// int avcodec_decode_subtitle2(AVCodecContext * avctx, AVSubtitle * sub, int * got_sub_ptr, AVPacket * avpkt);
function avcodec_decode_subtitle2(avctx: pAVCodecContext; var sub: AVSubtitle; var got_sub_ptr: int; avpkt: pAVPacket): int; cdecl; external avcodec_dll;
(*
* Supply raw packet data as input to a decoder.
*
* Internally, this call will copy relevant AVCodecContext fields, which can
* influence decoding per-packet, and apply them when the packet is actually
* decoded. (For example AVCodecContext.skip_frame, which might direct the
* decoder to drop the frame contained by the packet sent with this function.)
*
* @warning The input buffer, avpkt->data must be AV_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 Do not mix this API with the legacy API (like avcodec_decode_video2())
* on the same AVCodecContext. It will return unexpected results now
* or in future libavcodec versions.
*
* @note The AVCodecContext MUST have been opened with @ref avcodec_open2()
* before packets may be fed to the decoder.
*
* @param avctx codec context
* @param[in] avpkt The input AVPacket. Usually, this will be a single video
* frame, or several complete audio frames.
* Ownership of the packet remains with the caller, and the
* decoder will not write to the packet. The decoder may create
* a reference to the packet data (or copy it if the packet is
* not reference-counted).
* Unlike with older APIs, the packet is always fully consumed,
* and if it contains multiple frames (e.g. some audio codecs),
* will require you to call avcodec_receive_frame() multiple
* times afterwards before you can send a new packet.
* It can be NULL (or an AVPacket with data set to NULL and
* size set to 0); in this case, it is considered a flush
* packet, which signals the end of the stream. Sending the
* first flush packet will return success. Subsequent ones are
* unnecessary and will return AVERROR_EOF. If the decoder
* still has frames buffered, it will return them after sending
* a flush packet.
*
* @return 0 on success, otherwise negative error code:
* AVERROR(EAGAIN): input is not accepted in the current state - user
* must read output with avcodec_receive_frame() (once
* all output is read, the packet should be resent, and
* the call will not fail with EAGAIN).
* AVERROR_EOF: the decoder has been flushed, and no new packets can
* be sent to it (also returned if more than 1 flush
* packet is sent)
* AVERROR(EINVAL): codec not opened, it is an encoder, or requires flush
* AVERROR(ENOMEM): failed to add packet to internal queue, or similar
* other errors: legitimate decoding errors
*)
// int avcodec_send_packet(AVCodecContext * avctx, const AVPacket * avpkt);
function avcodec_send_packet(avctx: pAVCodecContext; const avpkt: pAVPacket): int; cdecl; overload; external avcodec_dll;
function avcodec_send_packet(avctx: pAVCodecContext; var avpkt: AVPacket): int; cdecl; overload; external avcodec_dll;
(*
* Return decoded output data from a decoder.
*
* @param avctx codec context
* @param frame This will be set to a reference-counted video or audio
* frame (depending on the decoder type) allocated by the
* decoder. Note that the function will always call
* av_frame_unref(frame) before doing anything else.
*
* @return
* 0: success, a frame was returned
* AVERROR(EAGAIN): output is not available in this state - user must try
* to send new input
* AVERROR_EOF: the decoder has been fully flushed, and there will be
* no more output frames
* AVERROR(EINVAL): codec not opened, or it is an encoder
* AVERROR_INPUT_CHANGED: current decoded frame has changed parameters
* with respect to first decoded frame. Applicable
* when flag AV_CODEC_FLAG_DROPCHANGED is set.
* other negative values: legitimate decoding errors
*)
// int avcodec_receive_frame(AVCodecContext * avctx, AVFrame * frame);
function avcodec_receive_frame(avctx: pAVCodecContext; frame: pAVFrame): int; cdecl; external avcodec_dll;
(*
* Supply a raw video or audio frame to the encoder. Use avcodec_receive_packet()
* to retrieve buffered output packets.
*
* @param avctx codec context
* @param[in] frame AVFrame containing the raw audio or video frame to be encoded.
* Ownership of the frame remains with the caller, and the
* encoder will not write to the frame. The encoder may create
* a reference to the frame data (or copy it if the frame is
* not reference-counted).
* It can be NULL, in which case it is considered a flush
* packet. This signals the end of the stream. If the encoder
* still has packets buffered, it will return them after this
* call. Once flushing mode has been entered, additional flush
* packets are ignored, and sending frames will return
* AVERROR_EOF.
*
* For audio:
* If AV_CODEC_CAP_VARIABLE_FRAME_SIZE is set, then each frame
* can have any number of samples.
* If it is not set, frame->nb_samples must be equal to
* avctx->frame_size for all frames except the last.
* The final frame may be smaller than avctx->frame_size.
* @return 0 on success, otherwise negative error code:
* AVERROR(EAGAIN): input is not accepted in the current state - user
* must read output with avcodec_receive_packet() (once
* all output is read, the packet should be resent, and
* the call will not fail with EAGAIN).
* AVERROR_EOF: the encoder has been flushed, and no new frames can
* be sent to it
* AVERROR(EINVAL): codec not opened, refcounted_frames not set, it is a
* decoder, or requires flush
* AVERROR(ENOMEM): failed to add packet to internal queue, or similar
* other errors: legitimate decoding errors
*)
// int avcodec_send_frame(AVCodecContext * avctx, const AVFrame * frame);
function avcodec_send_frame(avctx: pAVCodecContext; const frame: pAVFrame): int; cdecl; external avcodec_dll;
(*
* Read encoded data from the encoder.
*
* @param avctx codec context
* @param avpkt This will be set to a reference-counted packet allocated by the
* encoder. Note that the function will always call
* av_frame_unref(frame) before doing anything else.
* @return 0 on success, otherwise negative error code:
* AVERROR(EAGAIN): output is not available in the current state - user
* must try to send input
* AVERROR_EOF: the encoder has been fully flushed, and there will be
* no more output packets
* AVERROR(EINVAL): codec not opened, or it is an encoder
* other errors: legitimate decoding errors
*)
// int avcodec_receive_packet(AVCodecContext * avctx, AVPacket * avpkt);
function avcodec_receive_packet(avctx: pAVCodecContext; avpkt: pAVPacket): int; cdecl; overload; external avcodec_dll;
function avcodec_receive_packet(avctx: pAVCodecContext; var avpkt: AVPacket): int; cdecl; overload; external avcodec_dll;
(*
* Create and return a AVHWFramesContext with values adequate for hardware
* decoding. This is meant to get called from the get_format callback, and is
* a helper for preparing a AVHWFramesContext for AVCodecContext.hw_frames_ctx.
* This API is for decoding with certain hardware acceleration modes/APIs only.
*
* The returned AVHWFramesContext is not initialized. The caller must do this
* with av_hwframe_ctx_init().
*
* Calling this function is not a requirement, but makes it simpler to avoid
* codec or hardware API specific details when manually allocating frames.
*
* Alternatively to this, an API user can set AVCodecContext.hw_device_ctx,
* which sets up AVCodecContext.hw_frames_ctx fully automatically, and makes
* it unnecessary to call this function or having to care about
* AVHWFramesContext initialization at all.
*
* There are a number of requirements for calling this function:
*
* - It must be called from get_format with the same avctx parameter that was
* passed to get_format. Calling it outside of get_format is not allowed, and
* can trigger undefined behavior.
* - The function is not always supported (see description of return values).
* Even if this function returns successfully, hwaccel initialization could
* fail later. (The degree to which implementations check whether the stream
* is actually supported varies. Some do this check only after the user's
* get_format callback returns.)
* - The hw_pix_fmt must be one of the choices suggested by get_format. If the
* user decides to use a AVHWFramesContext prepared with this API function,
* the user must return the same hw_pix_fmt from get_format.
* - The device_ref passed to this function must support the given hw_pix_fmt.
* - After calling this API function, it is the user's responsibility to
* initialize the AVHWFramesContext (returned by the out_frames_ref parameter),
* and to set AVCodecContext.hw_frames_ctx to it. If done, this must be done
* before returning from get_format (this is implied by the normal
* AVCodecContext.hw_frames_ctx API rules).
* - The AVHWFramesContext parameters may change every time time get_format is
* called. Also, AVCodecContext.hw_frames_ctx is reset before get_format. So
* you are inherently required to go through this process again on every
* get_format call.
* - It is perfectly possible to call this function without actually using
* the resulting AVHWFramesContext. One use-case might be trying to reuse a
* previously initialized AVHWFramesContext, and calling this API function
* only to test whether the required frame parameters have changed.
* - Fields that use dynamically allocated values of any kind must not be set
* by the user unless setting them is explicitly allowed by the documentation.
* If the user sets AVHWFramesContext.free and AVHWFramesContext.user_opaque,
* the new free callback must call the potentially set previous free callback.
* This API call may set any dynamically allocated fields, including the free
* callback.
*
* The function will set at least the following fields on AVHWFramesContext
* (potentially more, depending on hwaccel API):
*
* - All fields set by av_hwframe_ctx_alloc().
* - Set the format field to hw_pix_fmt.
* - Set the sw_format field to the most suited and most versatile format. (An
* implication is that this will prefer generic formats over opaque formats
* with arbitrary restrictions, if possible.)
* - Set the width/height fields to the coded frame size, rounded up to the
* API-specific minimum alignment.
* - Only _if_ the hwaccel requires a pre-allocated pool: set the initial_pool_size
* field to the number of maximum reference surfaces possible with the codec,
* plus 1 surface for the user to work (meaning the user can safely reference
* at most 1 decoded surface at a time), plus additional buffering introduced
* by frame threading. If the hwaccel does not require pre-allocation, the
* field is left to 0, and the decoder will allocate new surfaces on demand
* during decoding.
* - Possibly AVHWFramesContext.hwctx fields, depending on the underlying
* hardware API.
*
* Essentially, out_frames_ref returns the same as av_hwframe_ctx_alloc(), but
* with basic frame parameters set.
*
* The function is stateless, and does not change the AVCodecContext or the
* device_ref AVHWDeviceContext.
*
* @param avctx The context which is currently calling get_format, and which
* implicitly contains all state needed for filling the returned
* AVHWFramesContext properly.
* @param device_ref A reference to the AVHWDeviceContext describing the device
* which will be used by the hardware decoder.
* @param hw_pix_fmt The hwaccel format you are going to return from get_format.
* @param out_frames_ref On success, set to a reference to an _uninitialized_
* AVHWFramesContext, created from the given device_ref.
* Fields will be set to values required for decoding.
* Not changed if an error is returned.
* @return zero on success, a negative value on error. The following error codes
* have special semantics:
* AVERROR(ENOENT): the decoder does not support this functionality. Setup
* is always manual, or it is a decoder which does not
* support setting AVCodecContext.hw_frames_ctx at all,
* or it is a software format.
* AVERROR(EINVAL): it is known that hardware decoding is not supported for
* this configuration, or the device_ref is not supported
* for the hwaccel referenced by hw_pix_fmt.
*)
// int avcodec_get_hw_frames_parameters(AVCodecContext * avctx, AVBufferRef * device_ref, enum AVPixelFormat hw_pix_fmt,
// AVBufferRef * * out_frames_ref);
function avcodec_get_hw_frames_parameters(avctx: pAVCodecContext; device_ref: pAVBufferRef; hw_pix_fmt: AVPixelFormat; var out_frames_ref: pAVBufferRef): int;
cdecl; external avcodec_dll;
const
AV_PARSER_PTS_NB = 4;
PARSER_FLAG_COMPLETE_FRAMES = $0001;
PARSER_FLAG_ONCE = $0002;
// Set if the parser has a valid file offset
PARSER_FLAG_FETCHED_OFFSET = $0004;
PARSER_FLAG_USE_CODEC_TS = $1000;
type
TAPPNArray_int64_t = array [0 .. AV_PARSER_PTS_NB - 1] of int64_t;
AVPictureStructure = ( //
AV_PICTURE_STRUCTURE_UNKNOWN, // < unknown
AV_PICTURE_STRUCTURE_TOP_FIELD, // < coded as top field
AV_PICTURE_STRUCTURE_BOTTOM_FIELD, // < coded as bottom field
AV_PICTURE_STRUCTURE_FRAME // < coded as frame
);
pAVCodecParserContext = ^AVCodecParserContext;
pAVCodecParser = ^AVCodecParser;
AVCodecParserContext = record
priv_data: Pointer;
parser: pAVCodecParser;
frame_offset: int64_t; (* offset of the current frame *)
cur_offset: int64_t; (* current offset
(incremented by each av_parser_parse()) *)
next_frame_offset: int64_t; (* offset of the next frame *)
(* video info *)
pict_type: int; (* XXX: Put it back in AVCodecContext. *)
(*
* This field is used for proper frame duration computation in lavf.
* It signals, how much longer the frame duration of the current frame
* is compared to normal frame duration.
*
* frame_duration = (1 + repeat_pict) * time_base
*
* It is used by codecs like H.264 to display telecined material.
*)
repeat_pict: int; (* XXX: Put it back in AVCodecContext. *)
pts: int64_t; (* pts of the current frame *)
dts: int64_t; (* dts of the current frame *)
(* private data *)
last_pts: int64_t;
last_dts: int64_t;
fetch_timestamp: int;
cur_frame_start_index: int;
cur_frame_offset: TAPPNArray_int64_t;
cur_frame_pts: TAPPNArray_int64_t;
cur_frame_dts: TAPPNArray_int64_t;
flags: int;
offset: int64_t; // < byte offset from starting packet start
cur_frame_end: TAPPNArray_int64_t;
(*
* Set by parser to 1 for key frames and 0 for non-key frames.
* It is initialized to -1, so if the parser doesn't set this flag,
* old-style fallback using AV_PICTURE_TYPE_I picture type as key frames
* will be used.
*)
key_frame: int;
{$IFDEF FF_API_CONVERGENCE_DURATION}
(*
* @deprecated unused
*)
// attribute_deprecated
convergence_duration: int64_t deprecated;
{$ENDIF}
// 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: int;
(*
* 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: int;
(*
* 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: int;
(*
* Position of the packet in file.
*
* Analogous to cur_frame_pts/dts
*)
cur_frame_pos: TAPPNArray_int64_t;
(*
* Byte position of currently parsed frame in stream.
*)
pos: int64_t;
(*
* Previous frame byte position.
*)
last_pos: int64_t;
(*
* Duration of the current frame.
* For audio, this is in units of 1 / AVCodecContext.sample_rate.
* For all other types, this is in units of AVCodecContext.time_base.
*)
duration: int;
field_order: AVFieldOrder;
(*
* Indicate whether a picture is coded as a frame, top field or bottom field.
*
* For example, H.264 field_pic_flag equal to 0 corresponds to
* AV_PICTURE_STRUCTURE_FRAME. An H.264 picture with field_pic_flag
* equal to 1 and bottom_field_flag equal to 0 corresponds to
* AV_PICTURE_STRUCTURE_TOP_FIELD.
*)
picture_structure: AVPictureStructure;
(*
* Picture number incremented in presentation or output order.
* This field may be reinitialized at the first picture of a new sequence.
*
* For example, this corresponds to H.264 PicOrderCnt.
*)
output_picture_number: int;
(*
* Dimensions of the decoded video intended for presentation.
*)
width: int;
height: int;
(*
* Dimensions of the coded video.
*)
coded_width: int;
coded_height: int;
(*
* The format of the coded data, corresponds to enum AVPixelFormat for video
* and for enum AVSampleFormat for audio.
*
* Note that a decoder can have considerable freedom in how exactly it
* decodes the data, so the format reported here might be different from the
* one returned by a decoder.
*)
format: int;
end;
Tcodec_ids_array_5_int = array [0 .. 4] of int;
AVCodecParser = record
codec_ids: Tcodec_ids_array_5_int; (* several codec IDs are permitted *)
priv_data_size: int;
// int (*parser_init)(AVCodecParserContext *s);
parser_init: function(s: pAVCodecParserContext): int; cdecl;
(* This callback never returns an error, a negative value means that
* the frame start was in a previous packet. *)
// int (*parser_parse)(AVCodecParserContext *s, AVCodecContext *avctx, const uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size);
parser_parse: function(s: pAVCodecParserContext; avctx: pAVCodecContext; const poutbuf: puint8_t; poutbuf_size: pInt; const buf: puint8_t; buf_size: int)
: int; cdecl;
// void (*parser_close)(AVCodecParserContext *s);
parser_close: procedure(s: pAVCodecParserContext); cdecl;
// int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
split: function(avctx: pAVCodecContext; const buf: puint8_t; buf_size: int): int; cdecl;
next: pAVCodecParser;
end;
(*
* Iterate over all registered codec parsers.
*
* @param opaque a pointer where libavcodec will store the iteration state. Must
* point to NULL to start the iteration.
*
* @return the next registered codec parser or NULL when the iteration is
* finished
*)
// const AVCodecParser * av_parser_iterate(void * * opaque);
function av_parser_iterate(var opaque: Pointer): pAVCodecParser; cdecl; external avcodec_dll;
// attribute_deprecated AVCodecParser * av_parser_next(const AVCodecParser * c);
function av_parser_next(const c: pAVCodecParser): pAVCodecParser; cdecl; external avcodec_dll; deprecated;
// attribute_deprecated void av_register_codec_parser(AVCodecParser * parser);
procedure av_register_codec_parser(parser: pAVCodecParser); cdecl; external avcodec_dll; deprecated;
// AVCodecParserContext * av_parser_init(int codec_id);
function av_parser_init(codec_id: int): pAVCodecParserContext; cdecl; external avcodec_dll; deprecated;
(*
* 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 buffer size in bytes without the padding. I.e. the full buffer
size is assumed to be buf_size + AV_INPUT_BUFFER_PADDING_SIZE.
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){
* len = av_parser_parse2(myparser, AVCodecContext, &data, &size,
* in_data, in_len,
* pts, dts, pos);
* in_data += len;
* in_len -= len;
*
* if(size)
* decode_frame(data, size);
* }
* @endcode
*)
// int av_parser_parse2(AVCodecParserContext * s, AVCodecContext * avctx, uint8_t * * poutbuf, int * poutbuf_size, const uint8_t * buf,
// int buf_size, int64_t pts, int64_t dts, int64_t pos);
function av_parser_parse2(s: pAVCodecParserContext; avctx: pAVCodecContext; var poutbuf: puint8_t; var poutbuf_size: int; const buf: puint8_t; buf_size: int;
pts: int64_t; dts: int64_t; pos: int64_t): int; cdecl; external avcodec_dll;
(*
* @return 0 if the output buffer is a subset of the input, 1 if it is allocated and must be freed
* @deprecated use AVBitStreamFilter
*)
// int av_parser_change(AVCodecParserContext * s, AVCodecContext * avctx, uint8_t **poutbuf, int * poutbuf_size, const uint8_t *buf,
// int buf_size, int keyframe);
function av_parser_change(s: pAVCodecParserContext; avctx: pAVCodecContext; var poutbuf: puint8_t; var poutbuf_size: int; const buf: puint8_t; buf_size: int;
keyframe: int): int; cdecl; external avcodec_dll; deprecated 'deprecated use AVBitStreamFilter';
// void av_parser_close(AVCodecParserContext * s);
procedure av_parser_close(s: pAVCodecParserContext); cdecl; external avcodec_dll; deprecated;
(*
* Find a registered encoder with a matching codec ID.
*
* @param id AVCodecID of the requested encoder
* @return An encoder if one was found, NULL otherwise.
*)
// avcodec * avcodec_find_encoder(enum AVCodecID id);
function avcodec_find_encoder(id: AVCodecID): pAVCodec; cdecl; external avcodec_dll;
(*
* Find a registered encoder with the specified name.
*
* @param name name of the requested encoder
* @return An encoder if one was found, NULL otherwise.
*)
// avcodec * avcodec_find_encoder_by_name(const char * name);
function avcodec_find_encoder_by_name(const name: pAnsiChar): pAVCodec; cdecl; external avcodec_dll;
(*
* Encode a frame of audio.
*
* Takes input samples from frame and writes the next output packet, if
* available, to avpkt. The output packet does not necessarily contain data for
* the most recent frame, as encoders can delay, split, and combine input frames
* internally as needed.
*
* @param avctx codec context
* @param avpkt output AVPacket.
* The user can supply an output buffer by setting
* avpkt->data and avpkt->size prior to calling the
* function, but if the size of the user-provided data is not
* large enough, encoding will fail. If avpkt->data and
* avpkt->size are set, avpkt->destruct must also be set. All
* other AVPacket fields will be reset by the encoder using
* av_init_packet(). If avpkt->data is NULL, the encoder will
* allocate it. The encoder will set avpkt->size to the size
* of the output packet.
*
* If this function fails or produces no output, avpkt will be
* freed using av_packet_unref().
* @param[in] frame AVFrame containing the raw audio data to be encoded.
* May be NULL when flushing an encoder that has the
* AV_CODEC_CAP_DELAY capability set.
* If AV_CODEC_CAP_VARIABLE_FRAME_SIZE is set, then each frame
* can have any number of samples.
* If it is not set, frame->nb_samples must be equal to
* avctx->frame_size for all frames except the last.
* The final frame may be smaller than avctx->frame_size.
* @param[out] got_packet_ptr This field is set to 1 by libavcodec if the
* output packet is non-empty, and to 0 if it is
* empty. If the function returns an error, the
* packet can be assumed to be invalid, and the
* value of got_packet_ptr is undefined and should
* not be used.
* @return 0 on success, negative error code on failure
*
* @deprecated use avcodec_send_frame()/avcodec_receive_packet() instead
*)
// attribute_deprecated
// int avcodec_encode_audio2(AVCodecContext * avctx, AVPacket * avpkt, const AVFrame * frame, int * got_packet_ptr);
function avcodec_encode_audio2(avctx: pAVCodecContext; avpkt: pAVPacket; const frame: pAVFrame; var got_packet_ptr: int): int; cdecl; external avcodec_dll;
deprecated;
(*
* Encode a frame of video.
*
* Takes input raw video data from frame and writes the next output packet, if
* available, to avpkt. The output packet does not necessarily contain data for
* the most recent frame, as encoders can delay and reorder input frames
* internally as needed.
*
* @param avctx codec context
* @param avpkt output AVPacket.
* The user can supply an output buffer by setting
* avpkt->data and avpkt->size prior to calling the
* function, but if the size of the user-provided data is not
* large enough, encoding will fail. All other AVPacket fields
* will be reset by the encoder using av_init_packet(). If
* avpkt->data is NULL, the encoder will allocate it.
* The encoder will set avpkt->size to the size of the
* output packet. The returned data (if any) belongs to the
* caller, he is responsible for freeing it.
*
* If this function fails or produces no output, avpkt will be
* freed using av_packet_unref().
* @param[in] frame AVFrame containing the raw video data to be encoded.
* May be NULL when flushing an encoder that has the
* AV_CODEC_CAP_DELAY capability set.
* @param[out] got_packet_ptr This field is set to 1 by libavcodec if the
* output packet is non-empty, and to 0 if it is
* empty. If the function returns an error, the
* packet can be assumed to be invalid, and the
* value of got_packet_ptr is undefined and should
* not be used.
* @return 0 on success, negative error code on failure
*
* @deprecated use avcodec_send_frame()/avcodec_receive_packet() instead
*)
// attribute_deprecated
// int avcodec_encode_video2(AVCodecContext * avctx, AVPacket * avpkt, const AVFrame * frame, int * got_packet_ptr);
function avcodec_encode_video2(avctx: pAVCodecContext; avpkt: pAVPacket; const frame: pAVFrame; var got_packet_ptr: int): int; cdecl; overload;
external avcodec_dll; deprecated;
function avcodec_encode_video2(avctx: pAVCodecContext; var avpkt: AVPacket; const frame: pAVFrame; var got_packet_ptr: int): int; cdecl; overload;
external avcodec_dll; deprecated;
// int avcodec_encode_subtitle(AVCodecContext * avctx, uint8_t * buf, int buf_size, const AVSubtitle * sub);
function avcodec_encode_subtitle(avctx: pAVCodecContext; buf: puint8_t; buf_size: int; const sub: pAVSubtitle): int; cdecl; external avcodec_dll;
{$IFDEF FF_API_AVPICTURE}
(*
* @deprecated unused
*)
// attribute_deprecated
// int avpicture_alloc(AVPicture * picture, enum AVPixelFormat pix_fmt, int width, int height);
function avpicture_alloc(picture: pAVPicture; pix_fmt: AVPixelFormat; width: int; height: int): int; cdecl; overload; external avcodec_dll; deprecated;
function avpicture_alloc(Var picture: AVPicture; pix_fmt: AVPixelFormat; width: int; height: int): int; cdecl; overload; external avcodec_dll; deprecated;
(*
* @deprecated unused
*)
// attribute_deprecated
// void avpicture_free(AVPicture * picture);
procedure avpicture_free(picture: pAVPicture); cdecl; external avcodec_dll; deprecated;
(*
* @deprecated use av_image_fill_arrays() instead.
*)
// attribute_deprecated
// int avpicture_fill(AVPicture * picture, const uint8_t * ptr, enum AVPixelFormat pix_fmt, int width, int height);
function avpicture_fill(picture: pAVPicture; const ptr: puint8_t; pix_fmt: AVPixelFormat; width: int; height: int): int; cdecl; external avcodec_dll;
(*
* @deprecated use av_image_copy_to_buffer() instead.
*)
// attribute_deprecated
// int avpicture_layout(const AVPicture * src, enum AVPixelFormat pix_fmt, int width, int height, unsigned char * dest, int dest_size);
function avpicture_layout(const src: pAVPicture; pix_fmt: AVPixelFormat; width: int; height: int; dest: punsignedchar; dest_size: int): int; cdecl;
external avcodec_dll; deprecated;
(*
* @deprecated use av_image_get_buffer_size() instead.
*)
// attribute_deprecated
// int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height);
function avpicture_get_size(pix_fmt: AVPixelFormat; width: int; height: int): int; cdecl; external avcodec_dll; deprecated;
(*
* @deprecated av_image_copy() instead.
*)
// attribute_deprecated
// void av_picture_copy(AVPicture * dst, const AVPicture * src, enum AVPixelFormat pix_fmt, int width, int height);
procedure av_picture_copy(dst: pAVPicture; const src: pAVPicture; pix_fmt: AVPixelFormat; width: int; height: int); cdecl; external avcodec_dll; deprecated;
(*
* @deprecated unused
*)
// attribute_deprecated
// int av_picture_crop(AVPicture * dst, const AVPicture * src, enum AVPixelFormat pix_fmt, int top_band, int left_band);
function av_picture_crop(dst: pAVPicture; const src: pAVPicture; pix_fmt: AVPixelFormat; top_band: int; left_band: int): int; cdecl; external avcodec_dll;
(*
* @deprecated unused
*)
// attribute_deprecated
// int av_picture_pad(AVPicture * dst, const AVPicture * src, int height, int width, enum AVPixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright, int * color);
function av_picture_pad(dst: pAVPicture; const src: pAVPicture; height: int; width: int; pix_fmt: AVPixelFormat; padtop: int; padbottom: int; padleft: int;
padright: int; var color: int): int; cdecl; external avcodec_dll; deprecated;
{$ENDIF}
(*
* @defgroup lavc_misc Utility functions
* @ingroup libavc
*
* Miscellaneous utility functions related to both encoding and decoding
* (or neither).
* @{
*)
(*
* @defgroup lavc_misc_pixfmt Pixel formats
*
* Functions for working with pixel formats.
* @{
*)
{$IFDEF FF_API_GETCHROMA}
(*
* @deprecated Use av_pix_fmt_get_chroma_sub_sample
*)
// attribute_deprecated
// void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int * h_shift, int * v_shift);
procedure avcodec_get_chroma_sub_sample(pix_fmt: AVPixelFormat; var h_shift, v_shift: int); cdecl; external avcodec_dll; deprecated;
{$ENDIF}
(*
* Return a value representing the fourCC code associated to the
* pixel format pix_fmt, or 0 if no associated fourCC code can be
* found.
*)
// unsigned int avcodec_pix_fmt_to_codec_tag(enum AVPixelFormat pix_fmt);
function avcodec_pix_fmt_to_codec_tag(pix_fmt: AVPixelFormat): unsignedint; cdecl; external avcodec_dll;
(*
* @deprecated see av_get_pix_fmt_loss()
*)
// int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat src_pix_fmt, int has_alpha);
function avcodec_get_pix_fmt_loss(dst_pix_fmt: AVPixelFormat; src_pix_fmt: AVPixelFormat; has_alpha: int): int; cdecl; external avcodec_dll;
(*
* Find the best pixel format to convert to given a certain source pixel
* format. When converting from one pixel format to another, information loss
* may occur. For example, when converting from RGB24 to GRAY, the color
* information will be lost. Similarly, other losses occur when converting from
* some formats to other formats. avcodec_find_best_pix_fmt_of_2() searches which of
* the given pixel formats should be used to suffer the least amount of loss.
* The pixel formats from which it chooses one, are determined by the
* pix_fmt_list parameter.
*
*
* @param[in] pix_fmt_list AV_PIX_FMT_NONE terminated array of pixel formats to choose from
* @param[in] src_pix_fmt source pixel format
* @param[in] has_alpha Whether the source pixel format alpha channel is used.
* @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
* @return The best pixel format to convert to or -1 if none was found.
*)
// enum AVPixelFormat avcodec_find_best_pix_fmt_of_list(const enum AVPixelFormat * pix_fmt_list, enum AVPixelFormat src_pix_fmt, int has_alpha,
// int * loss_ptr);
function avcodec_find_best_pix_fmt_of_list(const pix_fmt_list: pAVPixelFormat; src_pix_fmt: AVPixelFormat; has_alpha: int; var loss_ptr: int): AVPixelFormat;
cdecl; external avcodec_dll;
(*
* @deprecated see av_find_best_pix_fmt_of_2()
*)
// enum AVPixelFormat avcodec_find_best_pix_fmt_of_2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2,
// enum AVPixelFormat src_pix_fmt, int has_alpha, int * loss_ptr);
function avcodec_find_best_pix_fmt_of_2(dst_pix_fmt1: AVPixelFormat; dst_pix_fmt2: AVPixelFormat; src_pix_fmt: AVPixelFormat; has_alpha: int; var loss_ptr: int)
: AVPixelFormat; cdecl; external avcodec_dll;
// attribute_deprecated
// enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2,
// enum AVPixelFormat src_pix_fmt, int has_alpha, int * loss_ptr);
function avcodec_find_best_pix_fmt2(dst_pix_fmt1: AVPixelFormat; dst_pix_fmt2: AVPixelFormat; src_pix_fmt: AVPixelFormat; has_alpha: int; var loss_ptr: int)
: AVPixelFormat; cdecl; external avcodec_dll; deprecated;
// enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext * s, const enum AVPixelFormat * fmt);
function avcodec_default_get_format(s: pAVCodecContext; const fmt: pAVPixelFormat): AVPixelFormat; cdecl; external avcodec_dll;
{$IFDEF FF_API_TAG_STRING}
(*
* Put a string representing the codec tag codec_tag in buf.
*
* @param buf buffer to place codec tag in
* @param buf_size size in bytes of buf
* @param codec_tag codec tag to assign
* @return the length of the string that would have been generated if
* enough space had been available, excluding the trailing null
*
* @deprecated see av_fourcc_make_string() and av_fourcc2str().
*)
// attribute_deprecated
// size_t av_get_codec_tag_string(char * buf, size_t buf_size, unsigned int codec_tag);
function av_get_codec_tag_string(buf: pAnsiChar; buf_size: size_t; codec_tag: unsignedint): size_t; cdecl; external avcodec_dll; deprecated;
{$ENDIF}
// void avcodec_string(char * buf, int buf_size, AVCodecContext * enc, int encode);
procedure avcodec_string(buf: pAnsiChar; buf_size: int; enc: pAVCodecContext; encode: int); cdecl; external avcodec_dll;
(*
* Return a name for the specified profile, if available.
*
* @param codec the codec that is searched for the given profile
* @param profile the profile value for which a name is requested
* @return A name for the profile if found, NULL otherwise.
*)
// const char * av_get_profile_name(const avcodec * codec, int profile);
function av_get_profile_name(const codec: pAVCodec; profile: int): pAnsiChar; cdecl; external avcodec_dll;
(*
* Return a name for the specified profile, if available.
*
* @param codec_id the ID of the codec to which the requested profile belongs
* @param profile the profile value for which a name is requested
* @return A name for the profile if found, NULL otherwise.
*
* @note unlike av_get_profile_name(), which searches a list of profiles
* supported by a specific decoder or encoder implementation, this
* function searches the list of profiles from the AVCodecDescriptor
*)
// const char * avcodec_profile_name(enum AVCodecID codec_id, int profile);
function avcodec_profile_name(codec_id: AVCodecID; profile: int): pAnsiChar; cdecl; external avcodec_dll;
// int avcodec_default_execute(AVCodecContext * c, int (* func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size);
// int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int, int),void *arg, int *ret, int count);
type
Tavcodec_default_execute_func = function(c2: pAVCodecContext; arg2: Pointer): int; cdecl;
function avcodec_default_execute(c: pAVCodecContext; func: Tavcodec_default_execute_func; arg: Pointer; var ret: int; count: int; size: int): int; cdecl;
external avcodec_dll;
// int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int, int),void *arg, int *ret, int count);
type
Tavcodec_default_execute2_func = function(c2: pAVCodecContext; arg2: Pointer; p1, p2: int): int; cdecl;
function avcodec_default_execute2(c: pAVCodecContext; func: Tavcodec_default_execute2_func; arg: Pointer; var ret: int; count: int): int; cdecl;
external avcodec_dll;
// FIXME func typedef
(*
* Fill AVFrame audio data and linesize pointers.
*
* The buffer buf must be a preallocated buffer with a size big enough
* to contain the specified samples amount. The filled AVFrame data
* pointers will point to this buffer.
*
* AVFrame extended_data channel pointers are allocated if necessary for
* planar audio.
*
* @param frame the AVFrame
* frame->nb_samples must be set prior to calling the
* function. This function fills in frame->data,
* frame->extended_data, frame->linesize[0].
* @param nb_channels channel count
* @param sample_fmt sample format
* @param buf buffer to use for frame data
* @param buf_size size of buffer
* @param align plane size sample alignment (0 = default)
* @return >=0 on success, negative error code on failure
* @todo return the size in bytes required to store the samples in
* case of success, at the next libavutil bump
*)
// int avcodec_fill_audio_frame(AVFrame * frame, int nb_channels, enum AVSampleFormat sample_fmt, const uint8_t * buf, int buf_size, int align);
function avcodec_fill_audio_frame(frame: pAVFrame; nb_channels: int; sample_fmt: AVSampleFormat; const buf: puint8_t; buf_size: int; align: int): int; cdecl;
external avcodec_dll;
(*
* Reset the internal decoder state / flush internal buffers. Should be called
* e.g. when seeking or when switching to a different stream.
*
* @note when refcounted frames are not used (i.e. avctx->refcounted_frames is 0),
* this invalidates the frames previously returned from the decoder. When
* refcounted frames are used, the decoder just releases any references it might
* keep internally, but the caller's reference remains valid.
*)
// void avcodec_flush_buffers(AVCodecContext * avctx);
procedure avcodec_flush_buffers(avctx: pAVCodecContext); cdecl; external avcodec_dll;
(*
* Return codec bits per sample.
*
* @param[in] codec_id the codec
* @return Number of bits per sample or zero if unknown for the given codec.
*)
// int av_get_bits_per_sample(enum AVCodecID codec_id);
function av_get_bits_per_sample(codec_id: AVCodecID): int; cdecl; external avcodec_dll;
(*
* Return the PCM codec associated with a sample format.
* @param be endianness, 0 for little, 1 for big,
* -1 (or anything else) for native
* @return AV_CODEC_ID_PCM_* or AV_CODEC_ID_NONE
*)
// enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be);
function av_get_pcm_codec(fmt: AVSampleFormat; be: int): AVCodecID; cdecl; external avcodec_dll;
(*
* Return codec bits per sample.
* Only return non-zero if the bits per sample is exactly correct, not an
* approximation.
*
* @param[in] codec_id the codec
* @return Number of bits per sample or zero if unknown for the given codec.
*)
// int av_get_exact_bits_per_sample(enum AVCodecID codec_id);
function av_get_exact_bits_per_sample(codec_id: AVCodecID): int; cdecl; external avcodec_dll;
(*
* Return audio frame duration.
*
* @param avctx codec context
* @param frame_bytes size of the frame, or 0 if unknown
* @return frame duration, in samples, if known. 0 if not able to
* determine.
*)
// int av_get_audio_frame_duration(AVCodecContext * avctx, int frame_bytes);
function av_get_audio_frame_duration(avctx: pAVCodecContext; frame_bytes: int): int; cdecl; external avcodec_dll;
(*
* This function is the same as av_get_audio_frame_duration(), except it works
* with AVCodecParameters instead of an AVCodecContext.
*)
// int av_get_audio_frame_duration2(AVCodecParameters * par, int frame_bytes);
function av_get_audio_frame_duration2(par: pAVCodecParameters; frame_bytes: int): int; cdecl; external avcodec_dll;
Type
pAVBitStreamFilter = ^AVBitStreamFilter;
{$IFDEF FF_API_OLD_BSF}
pAVBitStreamFilterContext = ^AVBitStreamFilterContext;
AVBitStreamFilterContext = record
priv_data: Pointer;
filter: pAVBitStreamFilter;
parser: pAVCodecParserContext;
next: pAVBitStreamFilterContext;
(*
* Internal default arguments, used if NULL is passed to av_bitstream_filter_filter().
* Not for access by library users.
*)
args: pAnsiChar;
end;
{$ENDIF}
pAVBSFInternal = ^AVBSFInternal;
AVBSFInternal = record
end;
(*
* The bitstream filter state.
*
* This struct must be allocated with av_bsf_alloc() and freed with
* av_bsf_free().
*
* The fields in the struct will only be changed (by the caller or by the
* filter) as described in their documentation, and are to be considered
* immutable otherwise.
*)
pAVBSFContext = ^AVBSFContext;
AVBSFContext = record
(*
* A class for logging and AVOptions
*)
av_class: pAVClass;
(*
* The bitstream filter this context is an instance of.
*)
filter: pAVBitStreamFilter;
(*
* Opaque libavcodec internal data. Must not be touched by the caller in any
* way.
*)
internal: pAVBSFInternal;
(*
* Opaque filter-specific private data. If filter->priv_class is non-NULL,
* this is an AVOptions-enabled struct.
*)
priv_data: Pointer;
(*
* Parameters of the input stream. This field is allocated in
* av_bsf_alloc(), it needs to be filled by the caller before
* av_bsf_init().
*)
par_in: pAVCodecParameters;
(*
* Parameters of the output stream. This field is allocated in
* av_bsf_alloc(), it is set by the filter in av_bsf_init().
*)
par_out: pAVCodecParameters;
(*
* The timebase used for the timestamps of the input packets. Set by the
* caller before av_bsf_init().
*)
time_base_in: AVRational;
(*
* The timebase used for the timestamps of the output packets. Set by the
* filter in av_bsf_init().
*)
time_base_out: AVRational;
end;
AVBitStreamFilter = record
name: pAnsiChar;
(*
* A list of codec ids supported by the filter, terminated by
* AV_CODEC_ID_NONE.
* May be NULL, in that case the bitstream filter works with any codec id.
*)
codec_ids: pAVCodecID;
(*
* A class for the private data, used to declare bitstream filter private
* AVOptions. This field is NULL for bitstream filters that do not declare
* any options.
*
* If this field is non-NULL, the first member of the filter private data
* must be a pointer to AVClass, which will be set by libavcodec generic
* code to this class.
*)
priv_class: pAVClass;
(* ***************************************************************
* No fields below this line are part of the public API. They
* may not be used outside of libavcodec and can be changed and
* removed at will.
* New public fields should be added right above.
*****************************************************************
*)
priv_data_size: int;
// int (*init)(AVBSFContext *ctx);
init: function(ctx: pAVBSFContext): int; cdecl;
// int (*filter)(AVBSFContext *ctx, AVPacket *pkt);
filter: function(ctx: pAVBSFContext; pkt: pAVPacket): int; cdecl;
// void (*close)(AVBSFContext *ctx);
close: procedure(ctx: pAVBSFContext); cdecl;
// void (*flush)(AVBSFContext *ctx);
flush: procedure(ctx: pAVBSFContext); cdecl;
end;
{$IFDEF FF_API_OLD_BSF}
(*
* @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
* is deprecated. Use the new bitstream filtering API (using AVBSFContext).
*)
// attribute_deprecated void av_register_bitstream_filter(AVBitStreamFilter * bsf);
procedure av_register_bitstream_filter(bsf: pAVBitStreamFilter); cdecl; external avcodec_dll; deprecated;
(*
* @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
* is deprecated. Use av_bsf_get_by_name(), av_bsf_alloc(), and av_bsf_init()
* from the new bitstream filtering API (using AVBSFContext).
*)
// attribute_deprecated AVBitStreamFilterContext * av_bitstream_filter_init(const char * name);
function av_bitstream_filter_init(const name: pAnsiChar): pAVBitStreamFilterContext; cdecl; external avcodec_dll; deprecated;
(*
* @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
* is deprecated. Use av_bsf_send_packet() and av_bsf_receive_packet() from the
* new bitstream filtering API (using AVBSFContext).
*)
// attribute_deprecated int av_bitstream_filter_filter(AVBitStreamFilterContext * bsfc, AVCodecContext * avctx, const char * args,
// uint8_t * * poutbuf, int * poutbuf_size, const uint8_t * buf, int buf_size, int keyframe);
function av_bitstream_filter_filter(bsfc: pAVBitStreamFilterContext; avctx: pAVCodecContext; const args: pAnsiChar; var poutbuf: puint8_t;
var poutbuf_size: int; const buf: puint8_t; buf_size: int; keyframe: int): int; cdecl; external avcodec_dll; deprecated;
(*
* @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
* is deprecated. Use av_bsf_free() from the new bitstream filtering API (using
* AVBSFContext).
*)
// attribute_deprecated void av_bitstream_filter_close(AVBitStreamFilterContext * bsf);
procedure av_bitstream_filter_close(bsf: pAVBitStreamFilterContext); cdecl; external avcodec_dll; deprecated;
(*
* @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
* is deprecated. Use av_bsf_iterate() from the new bitstream filtering API (using
* AVBSFContext).
*)
// attribute_deprecated const AVBitStreamFilter * av_bitstream_filter_next(const AVBitStreamFilter * f);
function av_bitstream_filter_next(const f: pAVBitStreamFilter): pAVBitStreamFilter; cdecl; external avcodec_dll; deprecated;
{$ENDIF}
(*
* @return a bitstream filter with the specified name or NULL if no such
* bitstream filter exists.
*)
// const AVBitStreamFilter * av_bsf_get_by_name(const char * name);
function av_bsf_get_by_name(const name: pAnsiChar): pAVBitStreamFilter; cdecl; external avcodec_dll;
(*
* Iterate over all registered bitstream filters.
*
* @param opaque a pointer where libavcodec will store the iteration state. Must
* point to NULL to start the iteration.
*
* @return the next registered bitstream filter or NULL when the iteration is
* finished
*)
// const AVBitStreamFilter * av_bsf_iterate(void * * opaque);
function av_bsf_iterate(var opaque: Pointer): pAVBitStreamFilter; cdecl; external avcodec_dll;
{$IFDEF FF_API_NEXT}
// attribute_deprecated const AVBitStreamFilter * av_bsf_next(void * * opaque);
function av_bsf_next(var opaque: Pointer): pAVBitStreamFilter; cdecl; external avcodec_dll; deprecated;
{$ENDIF}
(*
* Allocate a context for a given bitstream filter. The caller must fill in the
* context parameters as described in the documentation and then call
* av_bsf_init() before sending any data to the filter.
*
* @param filter the filter for which to allocate an instance.
* @param ctx a pointer into which the pointer to the newly-allocated context
* will be written. It must be freed with av_bsf_free() after the
* filtering is done.
*
* @return 0 on success, a negative AVERROR code on failure
*)
// int av_bsf_alloc(const AVBitStreamFilter * filter, AVBSFContext * * ctx);
function av_bsf_alloc(const filter: pAVBitStreamFilter; var ctx: pAVBSFContext): int; cdecl; external avcodec_dll;
(*
* Prepare the filter for use, after all the parameters and options have been
* set.
*)
// int av_bsf_init(AVBSFContext * ctx);
function av_bsf_init(ctx: pAVBSFContext): int; cdecl; external avcodec_dll;
(*
* Submit a packet for filtering.
*
* After sending each packet, the filter must be completely drained by calling
* av_bsf_receive_packet() repeatedly until it returns AVERROR(EAGAIN) or
* AVERROR_EOF.
*
* @param pkt the packet to filter. The bitstream filter will take ownership of
* the packet and reset the contents of pkt. pkt is not touched if an error occurs.
* This parameter may be NULL, which signals the end of the stream (i.e. no more
* packets will be sent). That will cause the filter to output any packets it
* may have buffered internally.
*
* @return 0 on success, a negative AVERROR on error.
*)
// int av_bsf_send_packet(AVBSFContext * ctx, AVPacket * pkt);
function av_bsf_send_packet(ctx: pAVBSFContext; pkt: pAVPacket): int; cdecl; external avcodec_dll;
(*
* Retrieve a filtered packet.
*
* @param[out] pkt this struct will be filled with the contents of the filtered
* packet. It is owned by the caller and must be freed using
* av_packet_unref() when it is no longer needed.
* This parameter should be "clean" (i.e. freshly allocated
* with av_packet_alloc() or unreffed with av_packet_unref())
* when this function is called. If this function returns
* successfully, the contents of pkt will be completely
* overwritten by the returned data. On failure, pkt is not
* touched.
*
* @return 0 on success. AVERROR(EAGAIN) if more packets need to be sent to the
* filter (using av_bsf_send_packet()) to get more output. AVERROR_EOF if there
* will be no further output from the filter. Another negative AVERROR value if
* an error occurs.
*
* @note one input packet may result in several output packets, so after sending
* a packet with av_bsf_send_packet(), this function needs to be called
* repeatedly until it stops returning 0. It is also possible for a filter to
* output fewer packets than were sent to it, so this function may return
* AVERROR(EAGAIN) immediately after a successful av_bsf_send_packet() call.
*)
// int av_bsf_receive_packet(AVBSFContext * ctx, AVPacket * pkt);
function av_bsf_receive_packet(ctx: pAVBSFContext; pkt: pAVPacket): int; cdecl; external avcodec_dll;
(* *
* Reset the internal bitstream filter state / flush internal buffers.
*)
// void av_bsf_flush(AVBSFContext *ctx);
procedure av_bsf_flush(var ctx: AVBSFContext); cdecl; external avcodec_dll;
(*
* Free a bitstream filter context and everything associated with it; write NULL
* into the supplied pointer.
*)
// void av_bsf_free(AVBSFContext **ctx);
procedure av_bsf_free(var ctx: pAVBSFContext); cdecl; external avcodec_dll;
(*
* Get the AVClass for AVBSFContext. It can be used in combination with
* AV_OPT_SEARCH_FAKE_OBJ for examining options.
*
* @see av_opt_find().
*)
// const AVClass * av_bsf_get_class(void);
function av_bsf_get_class(): pAVClass; cdecl; external avcodec_dll;
type
(*
* Structure for chain/list of bitstream filters.
* Empty list can be allocated by av_bsf_list_alloc().
*)
pAVBSFList = ^AVBSFList;
AVBSFList = record
end;
(*
* Allocate empty list of bitstream filters.
* The list must be later freed by av_bsf_list_free()
* or finalized by av_bsf_list_finalize().
*
* @return Pointer to @ref AVBSFList on success, NULL in case of failure
*)
// AVBSFList * av_bsf_list_alloc(void);
function av_bsf_list_alloc(): pAVBSFList; cdecl; external avcodec_dll;
(*
* Free list of bitstream filters.
*
* @param lst Pointer to pointer returned by av_bsf_list_alloc()
*)
// void av_bsf_list_free(AVBSFList * * lst);
procedure av_bsf_list_free(var lst: pAVBSFList); cdecl; external avcodec_dll;
(*
* Append bitstream filter to the list of bitstream filters.
*
* @param lst List to append to
* @param bsf Filter context to be appended
*
* @return >=0 on success, negative AVERROR in case of failure
*)
// int av_bsf_list_append(AVBSFList * lst, AVBSFContext * bsf);
function av_bsf_list_append(lst: pAVBSFList; bsf: pAVBSFContext): int; cdecl; external avcodec_dll;
(*
* Construct new bitstream filter context given it's name and options
* and append it to the list of bitstream filters.
*
* @param lst List to append to
* @param bsf_name Name of the bitstream filter
* @param options Options for the bitstream filter, can be set to NULL
*
* @return >=0 on success, negative AVERROR in case of failure
*)
// int av_bsf_list_append2(AVBSFList * lst, const char * bsf_name, AVDictionary * * options);
function av_bsf_list_append2(lst: pAVBSFList; const bsf_name: pAnsiChar; var options: pAVDictionary): int; cdecl; external avcodec_dll;
(*
* Finalize list of bitstream filters.
*
* This function will transform @ref AVBSFList to single @ref AVBSFContext,
* so the whole chain of bitstream filters can be treated as single filter
* freshly allocated by av_bsf_alloc().
* If the call is successful, @ref AVBSFList structure is freed and lst
* will be set to NULL. In case of failure, caller is responsible for
* freeing the structure by av_bsf_list_free()
*
* @param lst Filter list structure to be transformed
* @param[out] bsf Pointer to be set to newly created @ref AVBSFContext structure
* representing the chain of bitstream filters
*
* @return >=0 on success, negative AVERROR in case of failure
*)
// int av_bsf_list_finalize(AVBSFList * * lst, AVBSFContext * * bsf);
function av_bsf_list_finalize(var lst: pAVBSFList; var bsf: pAVBSFContext): int; cdecl; external avcodec_dll;
(*
* Parse string describing list of bitstream filters and create single
* @ref AVBSFContext describing the whole chain of bitstream filters.
* Resulting @ref AVBSFContext can be treated as any other @ref AVBSFContext freshly
* allocated by av_bsf_alloc().
*
* @param str String describing chain of bitstream filters in format
* `bsf1[=opt1=val1:opt2=val2][,bsf2]`
* @param[out] bsf Pointer to be set to newly created @ref AVBSFContext structure
* representing the chain of bitstream filters
*
* @return >=0 on success, negative AVERROR in case of failure
*)
// int av_bsf_list_parse_str(const char * str, AVBSFContext * * bsf);
function av_bsf_list_parse_str(const str: pAnsiChar; var bsf: pAVBSFContext): int; cdecl; external avcodec_dll;
(*
* Get null/pass-through bitstream filter.
*
* @param[out] bsf Pointer to be set to new instance of pass-through bitstream filter
*
* @return
*)
// int av_bsf_get_null_filter(AVBSFContext * * bsf);
function av_bsf_get_null_filter(var bsf: pAVBSFContext): int; cdecl; external avcodec_dll;
(* memory *)
(*
* Same behaviour av_fast_malloc but the buffer has additional
* AV_INPUT_BUFFER_PADDING_SIZE at the end which will always be 0.
*
* In addition the whole buffer will initially and after resizes
* be 0-initialized so that no uninitialized data will ever appear.
*)
// void av_fast_padded_malloc(void * ptr, unsigned int * size, size_t min_size);
procedure av_fast_padded_malloc(ptr: Pointer; var size: unsignedint; min_size: size_t); cdecl; external avcodec_dll;
(*
* Same behaviour av_fast_padded_malloc except that buffer will always
* be 0-initialized after call.
*)
// void av_fast_padded_mallocz(void * ptr, unsigned int * size, size_t min_size);
procedure av_fast_padded_mallocz(ptr: Pointer; var size: unsignedint; min_size: size_t); cdecl; external avcodec_dll;
(*
* Encode extradata length to a buffer. Used by xiph codecs.
*
* @param s buffer to write to; must be at least (v/255+1) bytes long
* @param v size of extradata in bytes
* @return number of bytes written to the buffer.
*)
// unsigned int av_xiphlacing(unsigned char * s, unsigned int v);
function av_xiphlacing(s: punsignedchar; v: unsignedint): unsignedint; cdecl; external avcodec_dll;
{$IFDEF FF_API_USER_VISIBLE_AVHWACCEL}
(*
* Register the hardware accelerator hwaccel.
*
* @deprecated This function doesn't do anything.
*)
// attribute_deprecated void av_register_hwaccel(AVHWAccel * hwaccel);
procedure av_register_hwaccel(hwaccel: pAVHWAccel); cdecl; external avcodec_dll; deprecated 'This function doesn''t do anything';
(*
* 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.
*
* @deprecated AVHWaccel structures contain no user-serviceable parts, so
* this function should not be used.
*)
// attribute_deprecated AVHWAccel * av_hwaccel_next(const AVHWAccel * hwaccel);
function av_hwaccel_next(const hwaccel: pAVHWAccel): pAVHWAccel; cdecl; external avcodec_dll;
deprecated 'AVHWaccel structures contain no user-serviceable parts, so this function should not be used';
{$ENDIF}
{$IFDEF FF_API_LOCKMGR}
type
(*
* Lock operation used by lockmgr
*
* @deprecated Deprecated together with av_lockmgr_register().
*)
AVLockOp = ( //
AV_LOCK_CREATE, // < Create a mutex
AV_LOCK_OBTAIN, // < Lock the mutex
AV_LOCK_RELEASE, // < Unlock the mutex
AV_LOCK_DESTROY // < Free mutex resources
)deprecated 'Deprecated together with av_lockmgr_register()';
(*
* Register a user provided lock manager supporting the operations
* specified by AVLockOp. The "mutex" argument to the function points
* to a (void * ) where the lockmgr should store/get a pointer to a user
* allocated mutex. It is NULL upon AV_LOCK_CREATE and equal to the
* value left by the last call for all other ops. If the lock manager is
* unable to perform the op then it should leave the mutex in the same
* state as when it was called and return a non-zero value. However,
* when called with AV_LOCK_DESTROY the mutex will always be assumed to
* have been successfully destroyed. If av_lockmgr_register succeeds
* it will return a non-negative value, if it fails it will return a
* negative value and destroy all mutex and unregister all callbacks.
* av_lockmgr_register is not thread-safe, it must be called from a
* single thread before any calls which make use of locking are used.
*
* @param cb User defined callback. av_lockmgr_register invokes calls
* to this callback and the previously registered callback.
* The callback will be used to create more than one mutex
* each of which must be backed by its own underlying locking
* mechanism (i.e. do not use a single static object to
* implement your lock manager). If cb is set to NULL the
* lockmgr will be unregistered.
*
* @deprecated This function does nothing, and always returns 0. Be sure to
* build with thread support to get basic thread safety.
*)
// attribute_deprecated int av_lockmgr_register(int (* cb)(void **mutex, enum AVLockOp op));
type
Tav_lockmgr_register_cb_func = function(var mutex: Pointer; op: AVLockOp): int; cdecl;
function av_lockmgr_register(cb: Tav_lockmgr_register_cb_func): int; cdecl; external avcodec_dll;
{$ENDIF}
(*
* Get the type of the given codec.
*)
// enum AVMediaType avcodec_get_type(enum AVCodecID codec_id);
function avcodec_get_type(codec_id: AVCodecID): AVMediaType; cdecl; external avcodec_dll;
(*
* Get the name of a codec.
* @return a static string identifying the codec; never NULL
*)
// const char * avcodec_get_name(enum AVCodecID id);
function avcodec_get_name(id: AVCodecID): pAnsiChar; cdecl; external avcodec_dll;
(*
* @return a positive value if s is open (i.e. avcodec_open2() was called on it
* with no corresponding avcodec_close()), 0 otherwise.
*)
// int avcodec_is_open(AVCodecContext * s);
function avcodec_is_open(s: pAVCodecContext): int; cdecl; external avcodec_dll;
(*
* @return a non-zero number if codec is an encoder, zero otherwise
*)
// int av_codec_is_encoder(const avcodec * codec);
function av_codec_is_encoder(const codec: pAVCodec): int; cdecl; external avcodec_dll;
(*
* @return a non-zero number if codec is a decoder, zero otherwise
*)
// int av_codec_is_decoder(const avcodec * codec);
function av_codec_is_decoder(const codec: pAVCodec): int; cdecl; external avcodec_dll;
(*
* @return descriptor for given codec ID or NULL if no descriptor exists.
*)
// const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id);
function avcodec_descriptor_get(id: pAVCodecID): pAVCodecDescriptor; cdecl; external avcodec_dll;
(*
* Iterate over all codec descriptors known to libavcodec.
*
* @param prev previous descriptor. NULL to get the first descriptor.
*
* @return next descriptor or NULL after the last descriptor
*)
// const AVCodecDescriptor * avcodec_descriptor_next(const AVCodecDescriptor * prev);
function avcodec_descriptor_next(const prev: pAVCodecDescriptor): pAVCodecDescriptor; cdecl; external avcodec_dll;
(*
* @return codec descriptor with the given name or NULL if no such descriptor
* exists.
*)
// const AVCodecDescriptor * avcodec_descriptor_get_by_name(const char * name);
function avcodec_descriptor_get_by_name(const name): pAVCodecDescriptor; cdecl; external avcodec_dll;
(*
* Allocate a CPB properties structure and initialize its fields to default
* values.
*
* @param size if non-NULL, the size of the allocated struct will be written
* here. This is useful for embedding it in side data.
*
* @return the newly allocated struct or NULL on failure
*)
// AVCPBProperties * av_cpb_properties_alloc(size_t * size);
function av_cpb_properties_alloc(size: psize_t): pAVCPBProperties; cdecl; external avcodec_dll;
{$ENDREGION}
{$REGION 'ac3_parser.h'}
(* *
* Extract the bitstream ID and the frame size from AC-3 data.
*)
// int av_ac3_parse_header(const uint8_t *buf, size_t size,
// uint8_t *bitstream_id, uint16_t *frame_size);
function av_ac3_parse_header(const buf: puint8_t; size: size_t; var bitstream_id: uint8_t; var frame_size: uint16_t): int; cdecl; external avcodec_dll;
{$ENDREGION}
{$REGION 'adts_parser.h'}
(* *
* Extract the number of samples and frames from AAC data.
* @param[in] buf pointer to AAC data buffer
* @param[out] samples Pointer to where number of samples is written
* @param[out] frames Pointer to where number of frames is written
* @return Returns 0 on success, error code on failure.
*)
// int av_adts_header_parse(const uint8_t *buf, uint32_t *samples,
// uint8_t *frames);
function av_adts_header_parse(const buf: puint8_t; var samples: uint32_t; var frames: uint8_t): int; cdecl; external avcodec_dll;
{$ENDREGION}
{$REGION 'jni.h'}
(*
* Manually set a Java virtual machine which will be used to retrieve the JNI
* environment. Once a Java VM is set it cannot be changed afterwards, meaning
* you can call multiple times av_jni_set_java_vm with the same Java VM pointer
* however it will error out if you try to set a different Java VM.
*
* @param vm Java virtual machine
* @param log_ctx context used for logging, can be NULL
* @return 0 on success, < 0 otherwise
*)
// int av_jni_set_java_vm(void *vm, void *log_ctx);
function av_jni_set_java_vm(vm: Pointer; log_ctx: Pointer): int; cdecl; external avcodec_dll;
(*
* Get the Java virtual machine which has been set with av_jni_set_java_vm.
*
* @param vm Java virtual machine
* @return a pointer to the Java virtual machine
*)
// void *av_jni_get_java_vm(void *log_ctx);
function av_jni_get_java_vm(log_ctx: Pointer): Pointer; cdecl; external avcodec_dll;
{$ENDREGION}
{$REGION 'vorbis_parser.h'}
type
pAVVorbisParseContext = ^AVVorbisParseContext;
AVVorbisParseContext = record
end;
(* *
* Allocate and initialize the Vorbis parser using headers in the extradata.
*)
// AVVorbisParseContext *av_vorbis_parse_init(const uint8_t *extradata, int extradata_size);
function av_vorbis_parse_init(const extradata: puint8_t; extradata_size: int): pAVVorbisParseContext; cdecl; external avcodec_dll;
(* *
* Free the parser and everything associated with it.
*)
// void av_vorbis_parse_free(AVVorbisParseContext **s);
procedure av_vorbis_parse_free(var s: pAVVorbisParseContext); cdecl; external avcodec_dll;
const
VORBIS_FLAG_HEADER = $00000001;
VORBIS_FLAG_COMMENT = $00000002;
VORBIS_FLAG_SETUP = $00000004;
(* *
* Get the duration for a Vorbis packet.
*
* If @p flags is @c NULL,
* special frames are considered invalid.
*
* @param s Vorbis parser context
* @param buf buffer containing a Vorbis frame
* @param buf_size size of the buffer
* @param flags flags for special frames
*)
// int av_vorbis_parse_frame_flags(AVVorbisParseContext *s, const uint8_t *buf, int buf_size, int *flags);
function av_vorbis_parse_frame_flags(s: pAVVorbisParseContext; const buf: puint8_t; buf_size: int; var flags: int): int; cdecl; external avcodec_dll;
(* *
* Get the duration for a Vorbis packet.
*
* @param s Vorbis parser context
* @param buf buffer containing a Vorbis frame
* @param buf_size size of the buffer
*)
// int av_vorbis_parse_frame(AVVorbisParseContext *s, const uint8_t *buf, int buf_size);
function av_vorbis_parse_frame(s: pAVVorbisParseContext; const buf: puint8_t; buf_size: int): int; cdecl; external avcodec_dll;
// void av_vorbis_parse_reset(AVVorbisParseContext *s);
procedure av_vorbis_parse_reset(s: pAVVorbisParseContext); cdecl; external avcodec_dll;
{$ENDREGION}
{$REGION 'vaapi.h'}
{$IFDEF FF_API_STRUCT_VAAPI_CONTEXT}
type
(* *
* This structure is used to share data between the FFmpeg library and
* the client video application.
* This shall be zero-allocated and available as
* AVCodecContext.hwaccel_context. All user members can be set once
* during initialization or through each AVCodecContext.get_buffer()
* function call. In any case, they must be valid prior to calling
* decoding functions.
*
* Deprecated: use AVCodecContext.hw_frames_ctx instead.
*)
// struct attribute_deprecated
vaapi_context = record
(* *
* Window system dependent data
*
* - encoding: unused
* - decoding: Set by user
*)
display: Pointer;
(* *
* Configuration ID
*
* - encoding: unused
* - decoding: Set by user
*)
config_id: uint32_t;
(* *
* Context ID (video decode pipeline)
*
* - encoding: unused
* - decoding: Set by user
*)
context_id: uint32_t;
end deprecated;
{$ENDIF}
{$ENDREGION}
{$REGION 'avdct.h'}
type
(* *
* AVDCT context.
* @note function pointers can be NULL if the specific features have been
* disabled at build time.
*)
pAVDCT = ^AVDCT;
AVDCT = record
av_class: pAVClass;
// void (*idct)(int16_t *block /* align 16 */);
idct: procedure(block: pint16_t (* align 16 *) ); cdecl;
(* *
* IDCT input permutation.
* Several optimized IDCTs need a permutated input (relative to the
* normal order of the reference IDCT).
* This permutation must be performed before the idct_put/add.
* Note, normally this can be merged with the zigzag/alternate scan<br>
* An example to avoid confusion:
* - (->decode coeffs -> zigzag reorder -> dequant -> reference IDCT -> ...)
* - (x -> reference DCT -> reference IDCT -> x)
* - (x -> reference DCT -> simple_mmx_perm = idct_permutation
* -> simple_idct_mmx -> x)
* - (-> decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant
* -> simple_idct_mmx -> ...)
*)
idct_permutation: array [0 .. 64 - 1] of uint8_t;
// void (*fdct)(int16_t *block /* align 16 */);
fdct: procedure(block: pint16_t (* align 16 *) ); cdecl;
(* *
* DCT algorithm.
* must use AVOptions to set this field.
*)
dct_algo: int;
(* *
* IDCT algorithm.
* must use AVOptions to set this field.
*)
idct_algo: int;
// void (*get_pixels)(int16_t *block /* align 16 */,
// const uint8_t *pixels /* align 8 */,
// ptrdiff_t line_size);
get_pixels: procedure(block: int16_t (* align 16 *); const pixels: puint8_t (* align 8 *); line_size: ptrdiff_t); cdecl;
bits_per_sample: int;
end;
(* *
* Allocates a AVDCT context.
* This needs to be initialized with avcodec_dct_init() after optionally
* configuring it with AVOptions.
*
* To free it use av_free()
*)
// AVDCT *avcodec_dct_alloc(void);
function avcodec_dct_alloc(): pAVDCT; cdecl; external avcodec_dll;
// int avcodec_dct_init(AVDCT *);
function avcodec_dct_init(p: pAVDCT): int; cdecl; external avcodec_dll;
// const AVClass *avcodec_dct_get_class(void);
function avcodec_dct_get_class(): pAVClass; cdecl; external avcodec_dll;
{$ENDREGION}
{$REGION 'mediacodec.h'}
(* *
* This structure holds a reference to a android/view/Surface object that will
* be used as output by the decoder.
*
*)
type
pAVMediaCodecContext = ^AVMediaCodecContext;
AVMediaCodecContext = record
(* *
* android/view/Surface object reference.
*)
surface: Pointer;
end;
(* *
* Allocate and initialize a MediaCodec context.
*
* When decoding with MediaCodec is finished, the caller must free the
* MediaCodec context with av_mediacodec_default_free.
*
* @return a pointer to a newly allocated AVMediaCodecContext on success, NULL otherwise
*)
// AVMediaCodecContext *av_mediacodec_alloc_context(void);
function av_mediacodec_alloc_context(): pAVMediaCodecContext; cdecl; external avcodec_dll;
(* *
* Convenience function that sets up the MediaCodec context.
*
* @param avctx codec context
* @param ctx MediaCodec context to initialize
* @param surface reference to an android/view/Surface
* @return 0 on success, < 0 otherwise
*)
// int av_mediacodec_default_init(AVCodecContext * avctx, AVMediaCodecContext * ctx, void * surface);
function av_mediacodec_default_init(avctx: pAVCodecContext; ctx: pAVMediaCodecContext; surface: Pointer): int; cdecl; external avcodec_dll;
(* *
* This function must be called to free the MediaCodec context initialized with
* av_mediacodec_default_init().
*
* @param avctx codec context
*)
// void av_mediacodec_default_free(AVCodecContext * avctx);
procedure av_mediacodec_default_free(avctx: pAVCodecContext); cdecl; external avcodec_dll;
(* *
* Opaque structure representing a MediaCodec buffer to render.
*)
type
pAVMediaCodecBuffer = ^AVMediaCodecBuffer;
AVMediaCodecBuffer = record
end;
(* *
* Release a MediaCodec buffer and render it to the surface that is associated
* with the decoder. This function should only be called once on a given
* buffer, once released the underlying buffer returns to the codec, thus
* subsequent calls to this function will have no effect.
*
* @param buffer the buffer to render
* @param render 1 to release and render the buffer to the surface or 0 to
* discard the buffer
* @return 0 on success, < 0 otherwise
*)
// int av_mediacodec_release_buffer(AVMediaCodecBuffer * buffer, int render);
function av_mediacodec_release_buffer(buffer: pAVMediaCodecBuffer; render: int): int; cdecl; external avcodec_dll;
(*
* Release a MediaCodec buffer and render it at the given time to the surface
* that is associated with the decoder. The timestamp must be within one second
* of the current java/lang/System#nanoTime() (which is implemented using
* CLOCK_MONOTONIC on Android). See the Android MediaCodec documentation
* of android/media/MediaCodec#releaseOutputBuffer(int,long) for more details.
*
* @param buffer the buffer to render
* @param time timestamp in nanoseconds of when to render the buffer
* @return 0 on success, < 0 otherwise
*)
// int av_mediacodec_render_buffer_at_time(AVMediaCodecBuffer *buffer, int64_t time);
function av_mediacodec_render_buffer_at_time(buffer: pAVMediaCodecBuffer; time: int64_t): int; cdecl; external avcodec_dll;
{$ENDREGION}
{$REGION 'avfft.h'}
type
FFTSample = float;
pFFTSample = ^FFTSample;
pFFTComplex = ^FFTComplex;
FFTComplex = record
re, im: FFTSample;
end;
pFFTContext = ^FFTContext;
FFTContext = record
end;
(* *
* Set up a complex FFT.
* @param nbits log2 of the length of the input array
* @param inverse if 0 perform the forward transform, if 1 perform the inverse
*)
// FFTContext *av_fft_init(int nbits, int inverse);
function av_fft_init(nbits: int; inverse: int): pFFTContext; cdecl; external avcodec_dll;
(* *
* Do the permutation needed BEFORE calling ff_fft_calc().
*)
// void av_fft_permute(FFTContext *s, FFTComplex *z);
procedure av_fft_permute(s: pFFTContext; z: pFFTContext); cdecl; external avcodec_dll;
(* *
* Do a complex FFT with the parameters defined in av_fft_init(). The
* input data must be permuted before. No 1.0/sqrt(n) normalization is done.
*)
// void av_fft_calc(FFTContext *s, FFTComplex *z);
procedure av_fft_calc(s: pFFTContext; z: pFFTComplex); cdecl; external avcodec_dll;
// void av_fft_end(FFTContext *s);
procedure av_fft_end(s: pFFTContext); cdecl; external avcodec_dll;
// FFTContext *av_mdct_init(int nbits, int inverse, double scale);
function av_mdct_init(nbits: int; inverse: int; scale: double): pFFTContext; cdecl; external avcodec_dll;
// void av_imdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input);
procedure av_imdct_calc(s: pFFTContext; output: pFFTSample; const input: pFFTSample); cdecl; external avcodec_dll;
// void av_imdct_half(FFTContext *s, FFTSample *output, const FFTSample *input);
procedure av_imdct_half(s: pFFTContext; output: pFFTSample; const input: pFFTSample); cdecl; external avcodec_dll;
// void av_mdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input);
procedure av_mdct_calc(s: pFFTContext; output: pFFTSample; const input: pFFTSample); cdecl; external avcodec_dll;
// void av_mdct_end(FFTContext *s);
procedure av_mdct_end(s: pFFTContext); cdecl; external avcodec_dll;
Type
(* Real Discrete Fourier Transform *)
RDFTransformType = (DFT_R2C, IDFT_C2R, IDFT_R2C, DFT_C2R);
pRDFTContext = ^RDFTContext;
RDFTContext = record
end;
(* *
* Set up a real FFT.
* @param nbits log2 of the length of the input array
* @param trans the type of transform
*)
// RDFTContext *av_rdft_init(int nbits, enum RDFTransformType trans);
function av_rdft_init(nbits: int; trans: RDFTransformType): pRDFTContext; cdecl; external avcodec_dll;
// void av_rdft_calc(RDFTContext *s, FFTSample *data);
procedure av_rdft_calc(s: pRDFTContext; data: pFFTSample); cdecl; external avcodec_dll;
// void av_rdft_end(RDFTContext *s);
procedure av_rdft_end(s: pRDFTContext); cdecl; external avcodec_dll;
(* Discrete Cosine Transform *)
type
pDCTContext = ^DCTContext;
DCTContext = record
end;
DCTTransformType = ( //
DCT_II = 0, DCT_III, DCT_I, DST_I);
(* *
* Set up DCT.
*
* @param nbits size of the input array:
* (1 << nbits) for DCT-II, DCT-III and DST-I
* (1 << nbits) + 1 for DCT-I
* @param type the type of transform
*
* @note the first element of the input of DST-I is ignored
*)
// DCTContext *av_dct_init(int nbits, enum DCTTransformType type);
function av_dct_init(nbits: int; _type: DCTTransformType): pDCTContext; cdecl; external avcodec_dll;
// void av_dct_calc(DCTContext *s, FFTSample *data);
procedure av_dct_calc(s: pDCTContext; data: pFFTSample); cdecl; external avcodec_dll;
// void av_dct_end (DCTContext *s);
procedure av_dct_end(s: pDCTContext); cdecl; external avcodec_dll;
{$ENDREGION}
{$REGION 'dv_profile.h'}
const
(* minimum number of bytes to read from a DV stream in order to
* determine the profile *)
DV_PROFILE_BYTES = (6 * 80); (* 6 DIF blocks *)
type
(*
* AVDVProfile is used to express the differences between various
* DV flavors. For now it's primarily used for differentiating
* 525/60 and 625/50, but the plans are to use it for various
* DV specs as well (e.g. SMPTE314M vs. IEC 61834).
*)
Taudio_shuffle = array [0 .. 8] of uint8_t;
paudio_shuffle = ^Taudio_shuffle;
pAVDVProfile = ^AVDVProfile;
AVDVProfile = record
dsf: int; (* value of the dsf in the DV header *)
video_stype: int; (* stype for VAUX source pack *)
frame_size: int; (* total size of one frame in bytes *)
difseg_size: int; (* number of DIF segments per DIF channel *)
n_difchan: int; (* number of DIF channels per frame *)
time_base: AVRational; (* 1/framerate *)
ltc_divisor: int; (* FPS from the LTS standpoint *)
height: int; (* picture height in pixels *)
width: int; (* picture width in pixels *)
sar: array [0 .. 1] of AVRational; (* sample aspect ratios for 4:3 and 16:9 *)
pix_fmt: AVPixelFormat; (* picture pixel format *)
bpm: int; (* blocks per macroblock *)
block_sizes: puint8_t; (* AC block sizes, in bits *)
audio_stride: int; (* size of audio_shuffle table *)
audio_min_samples: array [0 .. 2] of int; (* min amount of audio samples *)
(* for 48kHz, 44.1kHz and 32kHz *)
audio_samples_dist: array [0 .. 4] of int; (* how many samples are supposed to be *)
(* in each frame in a 5 frames window *)
audio_shuffle: paudio_shuffle; (* PCM shuffling table *)
end;
(* *
* Get a DV profile for the provided compressed frame.
*
* @param sys the profile used for the previous frame, may be NULL
* @param frame the compressed data buffer
* @param buf_size size of the buffer in bytes
* @return the DV profile for the supplied data or NULL on failure
*)
// const AVDVProfile *av_dv_frame_profile(const AVDVProfile *sys,
// const uint8_t *frame, unsigned buf_size);
function av_dv_frame_profile(const sys: pAVDVProfile; const frame: puint8_t; buf_size: unsigned): pAVDVProfile; cdecl; external avcodec_dll;
(* *
* Get a DV profile for the provided stream parameters.
*)
// const AVDVProfile *av_dv_codec_profile(int width, int height, enum AVPixelFormat pix_fmt);
function av_dv_codec_profile(width: int; height: int; pix_fmt: AVPixelFormat): pAVDVProfile; cdecl; external avcodec_dll;
(* *
* Get a DV profile for the provided stream parameters.
* The frame rate is used as a best-effort parameter.
*)
// const AVDVProfile *av_dv_codec_profile2(int width, int height, enum AVPixelFormat pix_fmt, AVRational frame_rate);
function av_dv_codec_profile2(width: int; height: int; pix_fmt: AVPixelFormat; frame_rate: AVRational): pAVDVProfile; cdecl; external avcodec_dll;
{$ENDREGION}
{$REGION 'dirac.h'}
const
(* *
* The spec limits the number of wavelet decompositions to 4 for both
* level 1 (VC-2) and 128 (long-gop default).
* 5 decompositions is the maximum before >16-bit buffers are needed.
* Schroedinger allows this for DD 9,7 and 13,7 wavelets only, limiting
* the others to 4 decompositions (or 3 for the fidelity filter).
*
* We use this instead of MAX_DECOMPOSITIONS to save some memory.
*)
MAX_DWT_LEVELS = 5;
type
(* *
* Parse code values:
*
* Dirac Specification ->
* 9.6.1 Table 9.1
*
* VC-2 Specification ->
* 10.4.1 Table 10.1
*)
DiracParseCodes = (DIRAC_PCODE_SEQ_HEADER = $00, DIRAC_PCODE_END_SEQ = $10, DIRAC_PCODE_AUX = $20, DIRAC_PCODE_PAD = $30, DIRAC_PCODE_PICTURE_CODED = $08,
DIRAC_PCODE_PICTURE_RAW = $48, DIRAC_PCODE_PICTURE_LOW_DEL = $C8, DIRAC_PCODE_PICTURE_HQ = $E8, DIRAC_PCODE_INTER_NOREF_CO1 = $0A,
DIRAC_PCODE_INTER_NOREF_CO2 = $09, DIRAC_PCODE_INTER_REF_CO1 = $0D, DIRAC_PCODE_INTER_REF_CO2 = $0E, DIRAC_PCODE_INTRA_REF_CO = $0C,
DIRAC_PCODE_INTRA_REF_RAW = $4C, DIRAC_PCODE_INTRA_REF_PICT = $CC, DIRAC_PCODE_MAGIC = $42424344);
DiracVersionInfo = record
major: int;
minor: int;
end;
pAVDiracSeqHeader = ^AVDiracSeqHeader;
AVDiracSeqHeader = record
width: unsigned;
height: unsigned;
chroma_format: uint8_t;
// < 0: 444 1: 422 2: 420
interlaced: uint8_t;
top_field_first: uint8_t;
frame_rate_index: uint8_t;
// < index into dirac_frame_rate[]
aspect_ratio_index: uint8_t;
// < index into dirac_aspect_ratio[]
clean_width: uint16_t;
clean_height: uint16_t;
clean_left_offset: uint16_t;
clean_right_offset: uint16_t;
pixel_range_index: uint8_t;
// < index into dirac_pixel_range_presets[]
color_spec_index: uint8_t;
// < index into dirac_color_spec_presets[]
profile: int;
level: int;
framerate: AVRational;
sample_aspect_ratio: AVRational;
pix_fmt: AVPixelFormat;
color_range: AVColorRange;
color_primaries: AVColorPrimaries;
color_trc: AVColorTransferCharacteristic;
colorspace: AVColorSpace;
version: DiracVersionInfo;
bit_depth: int;
end;
(* *
* Parse a Dirac sequence header.
*
* @param dsh this function will allocate and fill an AVDiracSeqHeader struct
* and write it into this pointer. The caller must free it with
* av_free().
* @param buf the data buffer
* @param buf_size the size of the data buffer in bytes
* @param log_ctx if non-NULL, this function will log errors here
* @return 0 on success, a negative AVERROR code on failure
*)
// int av_dirac_parse_sequence_header(AVDiracSeqHeader **dsh,
// const uint8_t *buf, size_t buf_size,
// void *log_ctx);
function av_dirac_parse_sequence_header(var dsh: pAVDiracSeqHeader; const buf: puint8_t; buf_size: size_t; log_ctx: Pointer): int; cdecl; external avcodec_dll;
{$ENDREGION}
implementation
end.
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