X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Favcodec.h;h=4f46a1fb2e71030a45014319ba720669f58d7fde;hb=ba6cada92eb7c3446bfb1d4525031d405a052516;hp=0e7ca1db4dca807632c264348c4cac9e8e9ba73a;hpb=bf890ae0d7803492a729c2c8f2a5c907ade2a9f8;p=ffmpeg diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 0e7ca1db4dc..4f46a1fb2e7 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -41,6 +41,12 @@ #include "libavutil/pixfmt.h" #include "libavutil/rational.h" +#include "bsf.h" +#include "codec.h" +#include "codec_desc.h" +#include "codec_par.h" +#include "codec_id.h" +#include "packet.h" #include "version.h" /** @@ -92,6 +98,7 @@ * compressed data in an AVPacket. * - For encoding, call avcodec_send_frame() to give the encoder an AVFrame * containing uncompressed audio or video. + * * In both cases, it is recommended that AVPackets and AVFrames are * refcounted, or libavcodec might have to copy the input data. (libavformat * always returns refcounted AVPackets, and av_frame_get_buffer() allocates @@ -102,6 +109,7 @@ * an AVFrame containing uncompressed audio or video data. * - For encoding, call avcodec_receive_packet(). On success, it will return * an AVPacket with a compressed frame. + * * Repeat this call until it returns AVERROR(EAGAIN) or an error. The * AVERROR(EAGAIN) return value means that new input data is required to * return new output. In this case, continue with sending input. For each @@ -196,596 +204,6 @@ * @{ */ - -/** - * 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. - */ -enum 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, -#define 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, -#define 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 = 0x8000, - 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, - AV_CODEC_ID_MVDV, - AV_CODEC_ID_MVHA, - - /* various PCM "codecs" */ - AV_CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs - AV_CODEC_ID_PCM_S16LE = 0x10000, - 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 = 0x10800, - 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 = 0x11000, - 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 = 0x11800, - 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, - AV_CODEC_ID_ADPCM_ARGO, - - /* AMR */ - AV_CODEC_ID_AMR_NB = 0x12000, - AV_CODEC_ID_AMR_WB, - - /* RealAudio codecs*/ - AV_CODEC_ID_RA_144 = 0x13000, - AV_CODEC_ID_RA_288, - - /* various DPCM codecs */ - AV_CODEC_ID_ROQ_DPCM = 0x14000, - AV_CODEC_ID_INTERPLAY_DPCM, - AV_CODEC_ID_XAN_DPCM, - AV_CODEC_ID_SOL_DPCM, - - AV_CODEC_ID_SDX2_DPCM = 0x14800, - AV_CODEC_ID_GREMLIN_DPCM, - - /* audio codecs */ - AV_CODEC_ID_MP2 = 0x15000, - 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 = 0x15800, - 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, - AV_CODEC_ID_MPEGH_3D_AUDIO, - - /* subtitle codecs */ - AV_CODEC_ID_FIRST_SUBTITLE = 0x17000, ///< A dummy ID pointing at the start of subtitle codecs. - AV_CODEC_ID_DVD_SUBTITLE = 0x17000, - 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 = 0x17800, - 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 = 0x18000, ///< A dummy ID pointing at the start of various fake codecs. - AV_CODEC_ID_TTF = 0x18000, - - AV_CODEC_ID_SCTE_35, ///< Contain timestamp estimated through PCR of program stream. - AV_CODEC_ID_EPG, - AV_CODEC_ID_BINTEXT = 0x18800, - 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_PROBE = 0x19000, ///< codec_id is not known (like AV_CODEC_ID_NONE) but lavf should attempt to identify it - - AV_CODEC_ID_MPEG2TS = 0x20000, /**< _FAKE_ codec to indicate a raw MPEG-2 TS - * stream (only used by libavformat) */ - AV_CODEC_ID_MPEG4SYSTEMS = 0x20001, /**< _FAKE_ codec to indicate a MPEG-4 Systems - * stream (only used by libavformat) */ - AV_CODEC_ID_FFMETADATA = 0x21000, ///< Dummy codec for streams containing only metadata information. - AV_CODEC_ID_WRAPPED_AVFRAME = 0x21001, ///< Passthrough codec, AVFrames wrapped in AVPacket -}; - -/** - * This struct describes the properties of a single codec described by an - * AVCodecID. - * @see avcodec_descriptor_get() - */ -typedef struct AVCodecDescriptor { - enum AVCodecID id; - enum AVMediaType type; - /** - * 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. - */ - const char *name; - /** - * A more descriptive name for this codec. May be NULL. - */ - const char *long_name; - /** - * Codec properties, a combination of AV_CODEC_PROP_* flags. - */ - int props; - /** - * 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; - /** - * If non-NULL, an array of profiles recognized for this codec. - * Terminated with FF_PROFILE_UNKNOWN. - */ - const struct AVProfile *profiles; -} AVCodecDescriptor; - -/** - * Codec uses only intra compression. - * Video and audio codecs only. - */ -#define AV_CODEC_PROP_INTRA_ONLY (1 << 0) -/** - * Codec supports lossy compression. Audio and video codecs only. - * @note a codec may support both lossy and lossless - * compression modes - */ -#define AV_CODEC_PROP_LOSSY (1 << 1) -/** - * Codec supports lossless compression. Audio and video codecs only. - */ -#define AV_CODEC_PROP_LOSSLESS (1 << 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. - */ -#define AV_CODEC_PROP_REORDER (1 << 3) -/** - * Subtitle codec is bitmap based - * Decoded AVSubtitle data can be read from the AVSubtitleRect->pict field. - */ -#define AV_CODEC_PROP_BITMAP_SUB (1 << 16) -/** - * Subtitle codec is text based. - * Decoded AVSubtitle data can be read from the AVSubtitleRect->ass field. - */ -#define AV_CODEC_PROP_TEXT_SUB (1 << 17) - /** * @ingroup lavc_decoding * Required number of additionally allocated bytes at the end of the input bitstream for decoding. @@ -976,127 +394,22 @@ typedef struct RcOverride{ /* /Fx */ /* codec capabilities */ +/* Exported side data. + These flags can be passed in AVCodecContext.export_side_data before initialization. +*/ /** - * Decoder can use draw_horiz_band callback. - */ -#define AV_CODEC_CAP_DRAW_HORIZ_BAND (1 << 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. - */ -#define AV_CODEC_CAP_DR1 (1 << 1) -#define AV_CODEC_CAP_TRUNCATED (1 << 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. - */ -#define AV_CODEC_CAP_DELAY (1 << 5) -/** - * Codec can be fed a final frame with a smaller size. - * This can be used to prevent truncation of the last audio samples. - */ -#define AV_CODEC_CAP_SMALL_LAST_FRAME (1 << 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. - */ -#define AV_CODEC_CAP_SUBFRAMES (1 << 8) -/** - * Codec is experimental and is thus avoided in favor of non experimental - * encoders - */ -#define AV_CODEC_CAP_EXPERIMENTAL (1 << 9) -/** - * Codec should fill in channel configuration and samplerate instead of container - */ -#define AV_CODEC_CAP_CHANNEL_CONF (1 << 10) -/** - * Codec supports frame-level multithreading. - */ -#define AV_CODEC_CAP_FRAME_THREADS (1 << 12) -/** - * Codec supports slice-based (or partition-based) multithreading. - */ -#define AV_CODEC_CAP_SLICE_THREADS (1 << 13) -/** - * Codec supports changed parameters at any point. - */ -#define AV_CODEC_CAP_PARAM_CHANGE (1 << 14) -/** - * Codec supports avctx->thread_count == 0 (auto). - */ -#define AV_CODEC_CAP_AUTO_THREADS (1 << 15) -/** - * Audio encoder supports receiving a different number of samples in each call. - */ -#define AV_CODEC_CAP_VARIABLE_FRAME_SIZE (1 << 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. - */ -#define AV_CODEC_CAP_AVOID_PROBING (1 << 17) -/** - * Codec is intra only. - */ -#define AV_CODEC_CAP_INTRA_ONLY 0x40000000 -/** - * Codec is lossless. - */ -#define AV_CODEC_CAP_LOSSLESS 0x80000000 - -/** - * 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. + * Export motion vectors through frame side data */ -#define AV_CODEC_CAP_HARDWARE (1 << 18) - +#define AV_CODEC_EXPORT_DATA_MVS (1 << 0) /** - * 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. + * Export encoder Producer Reference Time through packet side data */ -#define AV_CODEC_CAP_HYBRID (1 << 19) - +#define AV_CODEC_EXPORT_DATA_PRFT (1 << 1) /** - * This codec takes the reordered_opaque field from input AVFrames - * and returns it in the corresponding field in AVCodecContext after - * encoding. + * Decoding only. + * Export the AVVideoEncParams structure through frame side data. */ -#define AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE (1 << 20) +#define AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS (1 << 2) /** * Pan Scan area. @@ -1177,7 +490,15 @@ typedef struct AVCPBProperties { uint64_t vbv_delay; } AVCPBProperties; +/** + * This structure supplies correlation between a packet timestamp and a wall clock + * production time. The definition follows the Producer Reference Time ('prft') + * as defined in ISO/IEC 14496-12 + */ typedef struct AVProducerReferenceTime { + /** + * A UTC timestamp, in microseconds, since Unix epoch (e.g, av_gettime()). + */ int64_t wallclock; int flags; } AVProducerReferenceTime; @@ -1187,385 +508,8 @@ typedef struct AVProducerReferenceTime { */ #define AV_GET_BUFFER_FLAG_REF (1 << 0) -/** - * @defgroup lavc_packet AVPacket - * - * Types and functions for working with AVPacket. - * @{ - */ -enum 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, - - /** - * Producer Reference Time data corresponding to the AVProducerReferenceTime struct. - */ - AV_PKT_DATA_PRFT, - - /** - * 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 -}; - -#define AV_PKT_DATA_QUALITY_FACTOR AV_PKT_DATA_QUALITY_STATS //DEPRECATED - -typedef struct AVPacketSideData { - uint8_t *data; - int size; - enum AVPacketSideDataType type; -} 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 - */ -typedef struct AVPacket { - /** - * A reference to the reference-counted buffer where the packet data is - * stored. - * May be NULL, then the packet data is not reference-counted. - */ - AVBufferRef *buf; - /** - * 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. - */ - int64_t pts; - /** - * 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. - */ - int64_t dts; - uint8_t *data; - int size; - int stream_index; - /** - * A combination of AV_PKT_FLAG values - */ - int flags; - /** - * Additional packet data that can be provided by the container. - * Packet can contain several types of side information. - */ - AVPacketSideData *side_data; - int side_data_elems; - - /** - * Duration of this packet in AVStream->time_base units, 0 if unknown. - * Equals next_pts - this_pts in presentation order. - */ - int64_t duration; - - int64_t pos; ///< byte position in stream, -1 if unknown - -#if 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 - int64_t convergence_duration; -#endif -} AVPacket; -#define AV_PKT_FLAG_KEY 0x0001 ///< The packet contains a keyframe -#define AV_PKT_FLAG_CORRUPT 0x0002 ///< 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. - **/ -#define AV_PKT_FLAG_DISCARD 0x0004 -/** - * The packet comes from a trusted source. - * - * Otherwise-unsafe constructs such as arbitrary pointers to data - * outside the packet may be followed. - */ -#define AV_PKT_FLAG_TRUSTED 0x0008 -/** - * Flag is used to indicate packets that contain frames that can - * be discarded by the decoder. I.e. Non-reference frames. - */ -#define AV_PKT_FLAG_DISPOSABLE 0x0010 - - -enum AVSideDataParamChangeFlags { - AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT = 0x0001, - AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT = 0x0002, - AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE = 0x0004, - AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS = 0x0008, -}; -/** - * @} - */ - struct AVCodecInternal; -enum 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 -}; - /** * main external API structure. * New fields can be added to the end with minor version bumps. @@ -3395,6 +2339,16 @@ typedef struct AVCodecContext { * - encoding: set by user */ int64_t max_samples; + + /** + * Bit set of AV_CODEC_EXPORT_DATA_* flags, which affects the kind of + * metadata exported in frame, packet, or coded stream side data by + * decoders and encoders. + * + * - decoding: set by user + * - encoding: set by user + */ + int export_side_data; } AVCodecContext; #if FF_API_CODEC_GET_SET @@ -3433,275 +2387,49 @@ attribute_deprecated void av_codec_set_chroma_intra_matrix(AVCodecContext *avctx, uint16_t *val); #endif +struct AVSubtitle; + +#if FF_API_CODEC_GET_SET +attribute_deprecated +int av_codec_get_max_lowres(const AVCodec *codec); +#endif + +struct MpegEncContext; + /** - * AVProfile. + * @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. + * + * @{ */ -typedef struct AVProfile { - int profile; - const char *name; ///< short name for the profile -} AVProfile; - -enum { +typedef struct AVHWAccel { /** - * 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(). + * 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). */ - AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX = 0x01, + const char *name; + /** - * The codec supports this format via the hw_frames_ctx interface. + * Type of codec implemented by the hardware accelerator. * - * 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. + * See AVMEDIA_TYPE_xxx */ - AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX = 0x02, + enum AVMediaType type; + /** - * The codec supports this format by some internal method. + * Codec implemented by the hardware accelerator. * - * This format can be selected without any additional configuration - - * no device or frames context is required. + * See AV_CODEC_ID_xxx */ - AV_CODEC_HW_CONFIG_METHOD_INTERNAL = 0x04, + enum AVCodecID id; + /** - * The codec supports this format by some ad-hoc method. + * Supported pixel format. * - * 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 = 0x08, -}; - -typedef struct AVCodecHWConfig { - /** - * A hardware pixel format which the codec can use. - */ - enum AVPixelFormat pix_fmt; - /** - * Bit set of AV_CODEC_HW_CONFIG_METHOD_* flags, describing the possible - * setup methods which can be used with this configuration. - */ - int methods; - /** - * 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. - */ - enum AVHWDeviceType device_type; -} AVCodecHWConfig; - -typedef struct AVCodecDefault AVCodecDefault; - -struct AVSubtitle; - -/** - * AVCodec. - */ -typedef struct AVCodec { - /** - * 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. - */ - const char *name; - /** - * 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. - */ - const char *long_name; - enum AVMediaType type; - enum AVCodecID id; - /** - * Codec capabilities. - * see AV_CODEC_CAP_* - */ - int capabilities; - const AVRational *supported_framerates; ///< array of supported framerates, or NULL if any, array is terminated by {0,0} - const enum AVPixelFormat *pix_fmts; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1 - const int *supported_samplerates; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0 - const enum AVSampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1 - const uint64_t *channel_layouts; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0 - uint8_t max_lowres; ///< maximum value for lowres supported by the decoder - const AVClass *priv_class; ///< AVClass for the private context - const AVProfile *profiles; ///< 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 "_"). - */ - const char *wrapper_name; - - /***************************************************************** - * 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. - ***************************************************************** - */ - int priv_data_size; - struct AVCodec *next; - /** - * @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 *); - /** - * 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); - /** @} */ - - /** - * Private codec-specific defaults. - */ - const AVCodecDefault *defaults; - - /** - * 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); - - int (*init)(AVCodecContext *); - int (*encode_sub)(AVCodecContext *, uint8_t *buf, int buf_size, - const struct AVSubtitle *sub); - /** - * 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); - int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt); - int (*close)(AVCodecContext *); - /** - * 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); - int (*receive_packet)(AVCodecContext *avctx, AVPacket *avpkt); - - /** - * 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); - /** - * Flush buffers. - * Will be called when seeking - */ - void (*flush)(AVCodecContext *); - /** - * Internal codec capabilities. - * See FF_CODEC_CAP_* in internal.h - */ - int caps_internal; - - /** - * Decoding only, a comma-separated list of bitstream filters to apply to - * packets before decoding. - */ - const char *bsfs; - - /** - * 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(). - */ - const struct AVCodecHWConfigInternal **hw_configs; - - /** - * List of supported codec_tags, terminated by FF_CODEC_TAGS_END. - */ - const uint32_t *codec_tags; -} AVCodec; - -#if FF_API_CODEC_GET_SET -attribute_deprecated -int av_codec_get_max_lowres(const AVCodec *codec); -#endif - -struct MpegEncContext; - -/** - * 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); - -/** - * @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. - * - * @{ - */ -typedef struct AVHWAccel { - /** - * 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). - */ - const char *name; - - /** - * Type of codec implemented by the hardware accelerator. - * - * See AVMEDIA_TYPE_xxx - */ - enum AVMediaType type; - - /** - * Codec implemented by the hardware accelerator. - * - * See AV_CODEC_ID_xxx - */ - enum AVCodecID id; - - /** - * Supported pixel format. - * - * Only hardware accelerated formats are supported here. + * Only hardware accelerated formats are supported here. */ enum AVPixelFormat pix_fmt; @@ -3969,175 +2697,6 @@ typedef struct AVSubtitle { int64_t pts; ///< Same as packet pts, in AV_TIME_BASE } AVSubtitle; -/** - * 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(). - */ -typedef struct AVCodecParameters { - /** - * General type of the encoded data. - */ - enum AVMediaType codec_type; - /** - * Specific type of the encoded data (the codec used). - */ - enum AVCodecID codec_id; - /** - * Additional information about the codec (corresponds to the AVI FOURCC). - */ - uint32_t codec_tag; - - /** - * 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. - */ - uint8_t *extradata; - /** - * Size of the extradata content in bytes. - */ - int extradata_size; - - /** - * - video: the pixel format, the value corresponds to enum AVPixelFormat. - * - audio: the sample format, the value corresponds to enum AVSampleFormat. - */ - int format; - - /** - * The average bitrate of the encoded data (in bits per second). - */ - int64_t bit_rate; - - /** - * 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 - */ - int bits_per_coded_sample; - - /** - * 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 - */ - int bits_per_raw_sample; - - /** - * Codec-specific bitstream restrictions that the stream conforms to. - */ - int profile; - int level; - - /** - * Video only. The dimensions of the video frame in pixels. - */ - int width; - int height; - - /** - * 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). - */ - AVRational sample_aspect_ratio; - - /** - * Video only. The order of the fields in interlaced video. - */ - enum AVFieldOrder field_order; - - /** - * Video only. Additional colorspace characteristics. - */ - enum AVColorRange color_range; - enum AVColorPrimaries color_primaries; - enum AVColorTransferCharacteristic color_trc; - enum AVColorSpace color_space; - enum AVChromaLocation chroma_location; - - /** - * Video only. Number of delayed frames. - */ - int video_delay; - - /** - * 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. - */ - uint64_t channel_layout; - /** - * Audio only. The number of audio channels. - */ - int channels; - /** - * Audio only. The number of audio samples per second. - */ - int sample_rate; - /** - * Audio only. The number of bytes per coded audio frame, required by some - * formats. - * - * Corresponds to nBlockAlign in WAVEFORMATEX. - */ - int block_align; - /** - * Audio only. Audio frame size, if known. Required by some formats to be static. - */ - int frame_size; - - /** - * 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. - */ - int initial_padding; - /** - * 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. - */ - int trailing_padding; - /** - * Audio only. Number of samples to skip after a discontinuity. - */ - int seek_preroll; -} AVCodecParameters; - -/** - * 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); - #if FF_API_NEXT /** * If c is NULL, returns the first registered codec, @@ -4234,450 +2793,119 @@ const AVClass *avcodec_get_class(void); * * @see av_opt_find(). */ -const AVClass *avcodec_get_frame_class(void); - -/** - * 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); - -/** - * 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); -#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); - -/** - * Free an AVCodecParameters instance and everything associated with it and - * write NULL to the supplied pointer. - */ -void avcodec_parameters_free(AVCodecParameters **par); - -/** - * 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); - -/** - * 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); - -/** - * 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); - -/** - * 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); - -/** - * 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); - -/** - * Free all allocated data in the given subtitle struct. - * - * @param sub AVSubtitle to free. - */ -void avsubtitle_free(AVSubtitle *sub); - -/** - * @} - */ - -/** - * @addtogroup lavc_packet - * @{ - */ - -/** - * 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); - -/** - * 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); - -/** - * 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); - -/** - * 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); - -/** - * 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); - -/** - * Reduce packet size, correctly zeroing padding - * - * @param pkt packet - * @param size new size - */ -void av_shrink_packet(AVPacket *pkt, int size); - -/** - * 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); - -/** - * 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); - -#if 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); -/** - * 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); - -/** - * 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); - -/** - * Free a packet. - * - * @deprecated Use av_packet_unref - * - * @param pkt packet to free - */ -attribute_deprecated -void av_free_packet(AVPacket *pkt); -#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); - -/** - * 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); - -/** - * 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); - -/** - * 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); - -#if FF_API_MERGE_SD_API -attribute_deprecated -int av_packet_merge_side_data(AVPacket *pkt); - -attribute_deprecated -int av_packet_split_side_data(AVPacket *pkt); -#endif - -const char *av_packet_side_data_name(enum AVPacketSideDataType type); - -/** - * 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); -/** - * 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); - +const AVClass *avcodec_get_frame_class(void); /** - * Convenience function to free all the side data stored. - * All the other fields stay untouched. + * Get the AVClass for AVSubtitleRect. It can be used in combination with + * AV_OPT_SEARCH_FAKE_OBJ for examining options. * - * @param pkt packet + * @see av_opt_find(). */ -void av_packet_free_side_data(AVPacket *pkt); +const AVClass *avcodec_get_subtitle_rect_class(void); /** - * 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 + * 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 dst Destination packet - * @param src Source packet + * @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 * - * @return 0 on success, a negative AVERROR on error. + * @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. */ -int av_packet_ref(AVPacket *dst, const AVPacket *src); +attribute_deprecated +int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src); +#endif /** - * Wipe the packet. - * - * Unreference the buffer referenced by the packet and reset the - * remaining packet fields to their default values. + * 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. * - * @param pkt The packet to be unreferenced. + * @return >= 0 on success, a negative AVERROR code on failure */ -void av_packet_unref(AVPacket *pkt); +int avcodec_parameters_from_context(AVCodecParameters *par, + const AVCodecContext *codec); /** - * Move every field in src to dst and reset src. - * - * @see av_packet_unref + * 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. * - * @param src Source packet, will be reset - * @param dst Destination packet + * @return >= 0 on success, a negative AVERROR code on failure. */ -void av_packet_move_ref(AVPacket *dst, AVPacket *src); +int avcodec_parameters_to_context(AVCodecContext *codec, + const AVCodecParameters *par); /** - * Copy only "properties" fields from src to dst. + * Initialize the AVCodecContext to use the given AVCodec. Prior to using this + * function the context has to be allocated with avcodec_alloc_context3(). * - * Properties for the purpose of this function are all the fields - * beside those related to the packet data (buf, data, size) + * 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. * - * @param dst Destination packet - * @param src Source packet + * @warning This function is not thread safe! * - * @return 0 on success AVERROR on failure. - */ -int av_packet_copy_props(AVPacket *dst, const AVPacket *src); - -/** - * Ensure the data described by a given packet is reference counted. + * @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); * - * @note This function does not ensure that the reference will be writable. - * Use av_packet_make_writable instead for that purpose. + * context = avcodec_alloc_context3(codec); * - * @see av_packet_ref - * @see av_packet_make_writable + * if (avcodec_open2(context, codec, opts) < 0) + * exit(1); + * @endcode * - * @param pkt packet whose data should be made reference counted. + * @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 0 on success, a negative AVERROR on error. On failure, the - * packet is unchanged. + * @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 av_packet_make_refcounted(AVPacket *pkt); +int avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options); /** - * Create a writable reference for the data described by a given packet, - * avoiding data copy if possible. + * Close a given AVCodecContext and free all the data associated with it + * (but not the AVCodecContext itself). * - * @param pkt Packet whose data should be made writable. + * 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. * - * @return 0 on success, a negative AVERROR on failure. On failure, the - * packet is unchanged. + * @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 av_packet_make_writable(AVPacket *pkt); +int avcodec_close(AVCodecContext *avctx); /** - * Convert valid timing fields (timestamps / durations) in a packet from one - * timebase to another. Timestamps with unknown values (AV_NOPTS_VALUE) will be - * ignored. + * Free all allocated data in the given subtitle struct. * - * @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 + * @param sub AVSubtitle to free. */ -void av_packet_rescale_ts(AVPacket *pkt, AVRational tb_src, AVRational tb_dst); +void avsubtitle_free(AVSubtitle *sub); /** * @} @@ -4688,22 +2916,6 @@ void av_packet_rescale_ts(AVPacket *pkt, AVRational tb_src, AVRational tb_dst); * @{ */ -/** - * 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); - -/** - * 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); - /** * The default callback for AVCodecContext.get_buffer2(). It is made public so * it can be called by custom get_buffer2() implementations for decoders without @@ -4865,7 +3077,7 @@ int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, * 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 + * simplicity, because the performance difference is expected to be negligible * and reusing a get_buffer written for video codecs would probably perform badly * due to a potentially very different allocation pattern. * @@ -4881,7 +3093,7 @@ int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, * 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, + * @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. @@ -4998,7 +3210,7 @@ int avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame); * 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 + * other errors: legitimate encoding errors */ int avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame); @@ -5008,14 +3220,14 @@ int avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame); * @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. + * av_packet_unref(avpkt) 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 + * AVERROR(EINVAL): codec not opened, or it is a decoder + * other errors: legitimate encoding errors */ int avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt); @@ -5393,22 +3605,6 @@ void av_parser_close(AVCodecParserContext *s); * @{ */ -/** - * 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); - -/** - * 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); - /** * Encode a frame of audio. * @@ -5712,13 +3908,21 @@ int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, int buf_size, int align); /** - * Reset the internal decoder state / flush internal buffers. Should be called + * Reset the internal codec 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. + * @note for decoders, 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. + * + * @note for encoders, this function will only do something if the encoder + * declares support for AV_CODEC_CAP_ENCODER_FLUSH. When called, the encoder + * will drain any remaining packets, and can then be re-used for a different + * stream (as opposed to sending a null frame which will leave the encoder + * in a permanent EOF state after draining). This can be desirable if the + * cost of tearing down and replacing the encoder instance is high. */ void avcodec_flush_buffers(AVCodecContext *avctx); @@ -5776,106 +3980,7 @@ typedef struct AVBitStreamFilterContext { */ char *args; } AVBitStreamFilterContext; -#endif - -typedef struct AVBSFInternal AVBSFInternal; - -/** - * 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. - */ -typedef struct AVBSFContext { - /** - * A class for logging and AVOptions - */ - const AVClass *av_class; - - /** - * The bitstream filter this context is an instance of. - */ - const struct AVBitStreamFilter *filter; - - /** - * Opaque libavcodec internal data. Must not be touched by the caller in any - * way. - */ - AVBSFInternal *internal; - - /** - * Opaque filter-specific private data. If filter->priv_class is non-NULL, - * this is an AVOptions-enabled struct. - */ - void *priv_data; - /** - * 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(). - */ - AVCodecParameters *par_in; - - /** - * Parameters of the output stream. This field is allocated in - * av_bsf_alloc(), it is set by the filter in av_bsf_init(). - */ - AVCodecParameters *par_out; - - /** - * The timebase used for the timestamps of the input packets. Set by the - * caller before av_bsf_init(). - */ - AVRational time_base_in; - - /** - * The timebase used for the timestamps of the output packets. Set by the - * filter in av_bsf_init(). - */ - AVRational time_base_out; -} AVBSFContext; - -typedef struct AVBitStreamFilter { - const char *name; - - /** - * 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. - */ - const enum AVCodecID *codec_ids; - - /** - * 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. - */ - const AVClass *priv_class; - - /***************************************************************** - * 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. - ***************************************************************** - */ - - int priv_data_size; - int (*init)(AVBSFContext *ctx); - int (*filter)(AVBSFContext *ctx, AVPacket *pkt); - void (*close)(AVBSFContext *ctx); - void (*flush)(AVBSFContext *ctx); -} AVBitStreamFilter; - -#if FF_API_OLD_BSF /** * @deprecated the old bitstream filtering API (using AVBitStreamFilterContext) * is deprecated. Use the new bitstream filtering API (using AVBSFContext). @@ -5915,196 +4020,11 @@ attribute_deprecated const AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f); #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); - -/** - * 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); #if FF_API_NEXT attribute_deprecated const AVBitStreamFilter *av_bsf_next(void **opaque); #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); - -/** - * Prepare the filter for use, after all the parameters and options have been - * set. - */ -int av_bsf_init(AVBSFContext *ctx); - -/** - * 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. - * If pkt is empty (i.e. NULL, or pkt->data is NULL and pkt->side_data_elems zero), - * it signals the end of the stream (i.e. no more non-empty packets will be sent; - * sending more empty packets does nothing) and will cause the filter to output - * any packets it may have buffered internally. - * - * @return 0 on success, a negative AVERROR on error. This function never fails if - * pkt is empty. - */ -int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt); - -/** - * 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); - -/** - * Reset the internal bitstream filter state / flush internal buffers. - */ -void av_bsf_flush(AVBSFContext *ctx); - -/** - * Free a bitstream filter context and everything associated with it; write NULL - * into the supplied pointer. - */ -void av_bsf_free(AVBSFContext **ctx); - -/** - * 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); - -/** - * Structure for chain/list of bitstream filters. - * Empty list can be allocated by av_bsf_list_alloc(). - */ -typedef struct AVBSFList AVBSFList; - -/** - * 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); - -/** - * Free list of bitstream filters. - * - * @param lst Pointer to pointer returned by av_bsf_list_alloc() - */ -void av_bsf_list_free(AVBSFList **lst); - -/** - * 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); - -/** - * 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); -/** - * 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); - -/** - * 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); - -/** - * 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); - /* memory */ /** @@ -6212,36 +4132,6 @@ const char *avcodec_get_name(enum AVCodecID id); */ int avcodec_is_open(AVCodecContext *s); -/** - * @return a non-zero number if codec is an encoder, zero otherwise - */ -int av_codec_is_encoder(const AVCodec *codec); - -/** - * @return a non-zero number if codec is a decoder, zero otherwise - */ -int av_codec_is_decoder(const AVCodec *codec); - -/** - * @return descriptor for given codec ID or NULL if no descriptor exists. - */ -const AVCodecDescriptor *avcodec_descriptor_get(enum AVCodecID id); - -/** - * 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); - -/** - * @return codec descriptor with the given name or NULL if no such descriptor - * exists. - */ -const AVCodecDescriptor *avcodec_descriptor_get_by_name(const char *name); - /** * Allocate a CPB properties structure and initialize its fields to default * values.