/* * copyright (c) 2001 Fabrice Bellard * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVCODEC_AVCODEC_H#define AVCODEC_AVCODEC_H /** * @file * external API header */ #include <errno.h>#include "libavutil/samplefmt.h"#include "libavutil/avutil.h"#include "libavutil/cpu.h"#include "libavutil/dict.h"#include "libavutil/log.h"#include "libavutil/pixfmt.h"#include "libavutil/rational.h" #include "libavcodec/version.h"/** * @defgroup libavc Encoding/Decoding Library * @{ * * @defgroup lavc_decoding Decoding * @{ * @} * * @defgroup lavc_encoding Encoding * @{ * @} * * @defgroup lavc_codec Codecs * @{ * @defgroup lavc_codec_native Native Codecs * @{ * @} * @defgroup lavc_codec_wrappers External library wrappers * @{ * @} * @defgroup lavc_codec_hwaccel Hardware Accelerators bridge * @{ * @} * @} * @defgroup lavc_internal Internal * @{ * @} * @} * */ /** * @defgroup lavc_core Core functions/structures. * @ingroup libavc * * Basic definitions, functions for querying libavcodec capabilities, * allocating core structures, etc. * @{ */ /** * Identify the syntax and semantics of the bitstream. * The principle is roughly: * Two decoders with the same ID can decode the same streams. * Two encoders with the same ID can encode compatible streams. * There may be slight deviations from the principle due to implementation * details. * * If you add a codec ID to this list, add it so that * 1. no value of a existing codec ID changes (that would break ABI), * 2. it is as close as possible to similar codecs. */enum CodecID {    CODEC_ID_NONE,     /* video codecs */    CODEC_ID_MPEG1VIDEO,    CODEC_ID_MPEG2VIDEO, ///< preferred ID for MPEG-1/2 video decoding    CODEC_ID_MPEG2VIDEO_XVMC,    CODEC_ID_H261,    CODEC_ID_H263,    CODEC_ID_RV10,    CODEC_ID_RV20,    CODEC_ID_MJPEG,    CODEC_ID_MJPEGB,    CODEC_ID_LJPEG,    CODEC_ID_SP5X,    CODEC_ID_JPEGLS,    CODEC_ID_MPEG4,    CODEC_ID_RAWVIDEO,    CODEC_ID_MSMPEG4V1,    CODEC_ID_MSMPEG4V2,    CODEC_ID_MSMPEG4V3,    CODEC_ID_WMV1,    CODEC_ID_WMV2,    CODEC_ID_H263P,    CODEC_ID_H263I,    CODEC_ID_FLV1,    CODEC_ID_SVQ1,    CODEC_ID_SVQ3,    CODEC_ID_DVVIDEO,    CODEC_ID_HUFFYUV,    CODEC_ID_CYUV,    CODEC_ID_H264,    CODEC_ID_INDEO3,    CODEC_ID_VP3,    CODEC_ID_THEORA,    CODEC_ID_ASV1,    CODEC_ID_ASV2,    CODEC_ID_FFV1,    CODEC_ID_4XM,    CODEC_ID_VCR1,    CODEC_ID_CLJR,    CODEC_ID_MDEC,    CODEC_ID_ROQ,    CODEC_ID_INTERPLAY_VIDEO,    CODEC_ID_XAN_WC3,    CODEC_ID_XAN_WC4,    CODEC_ID_RPZA,    CODEC_ID_CINEPAK,    CODEC_ID_WS_VQA,    CODEC_ID_MSRLE,    CODEC_ID_MSVIDEO1,    CODEC_ID_IDCIN,    CODEC_ID_8BPS,    CODEC_ID_SMC,    CODEC_ID_FLIC,    CODEC_ID_TRUEMOTION1,    CODEC_ID_VMDVIDEO,    CODEC_ID_MSZH,    CODEC_ID_ZLIB,    CODEC_ID_QTRLE,    CODEC_ID_SNOW,    CODEC_ID_TSCC,    CODEC_ID_ULTI,    CODEC_ID_QDRAW,    CODEC_ID_VIXL,    CODEC_ID_QPEG,    CODEC_ID_PNG,    CODEC_ID_PPM,    CODEC_ID_PBM,    CODEC_ID_PGM,    CODEC_ID_PGMYUV,    CODEC_ID_PAM,    CODEC_ID_FFVHUFF,    CODEC_ID_RV30,    CODEC_ID_RV40,    CODEC_ID_VC1,    CODEC_ID_WMV3,    CODEC_ID_LOCO,    CODEC_ID_WNV1,    CODEC_ID_AASC,    CODEC_ID_INDEO2,    CODEC_ID_FRAPS,    CODEC_ID_TRUEMOTION2,    CODEC_ID_BMP,    CODEC_ID_CSCD,    CODEC_ID_MMVIDEO,    CODEC_ID_ZMBV,    CODEC_ID_AVS,    CODEC_ID_SMACKVIDEO,    CODEC_ID_NUV,    CODEC_ID_KMVC,    CODEC_ID_FLASHSV,    CODEC_ID_CAVS,    CODEC_ID_JPEG2000,    CODEC_ID_VMNC,    CODEC_ID_VP5,    CODEC_ID_VP6,    CODEC_ID_VP6F,    CODEC_ID_TARGA,    CODEC_ID_DSICINVIDEO,    CODEC_ID_TIERTEXSEQVIDEO,    CODEC_ID_TIFF,    CODEC_ID_GIF,    CODEC_ID_DXA,    CODEC_ID_DNXHD,    CODEC_ID_THP,    CODEC_ID_SGI,    CODEC_ID_C93,    CODEC_ID_BETHSOFTVID,    CODEC_ID_PTX,    CODEC_ID_TXD,    CODEC_ID_VP6A,    CODEC_ID_AMV,    CODEC_ID_VB,    CODEC_ID_PCX,    CODEC_ID_SUNRAST,    CODEC_ID_INDEO4,    CODEC_ID_INDEO5,    CODEC_ID_MIMIC,    CODEC_ID_RL2,    CODEC_ID_ESCAPE124,    CODEC_ID_DIRAC,    CODEC_ID_BFI,    CODEC_ID_CMV,    CODEC_ID_MOTIONPIXELS,    CODEC_ID_TGV,    CODEC_ID_TGQ,    CODEC_ID_TQI,    CODEC_ID_AURA,    CODEC_ID_AURA2,    CODEC_ID_V210X,    CODEC_ID_TMV,    CODEC_ID_V210,    CODEC_ID_DPX,    CODEC_ID_MAD,    CODEC_ID_FRWU,    CODEC_ID_FLASHSV2,    CODEC_ID_CDGRAPHICS,    CODEC_ID_R210,    CODEC_ID_ANM,    CODEC_ID_BINKVIDEO,    CODEC_ID_IFF_ILBM,    CODEC_ID_IFF_BYTERUN1,    CODEC_ID_KGV1,    CODEC_ID_YOP,    CODEC_ID_VP8,    CODEC_ID_PICTOR,    CODEC_ID_ANSI,    CODEC_ID_A64_MULTI,    CODEC_ID_A64_MULTI5,    CODEC_ID_R10K,    CODEC_ID_MXPEG,    CODEC_ID_LAGARITH,    CODEC_ID_PRORES,    CODEC_ID_JV,    CODEC_ID_DFA,    CODEC_ID_WMV3IMAGE,    CODEC_ID_VC1IMAGE,    CODEC_ID_UTVIDEO,    CODEC_ID_BMV_VIDEO,    CODEC_ID_VBLE,    CODEC_ID_DXTORY,    CODEC_ID_V410,    CODEC_ID_XWD,    CODEC_ID_CDXL,    CODEC_ID_XBM,    CODEC_ID_ZEROCODEC,    CODEC_ID_MSS1,     /* various PCM "codecs" */    CODEC_ID_FIRST_AUDIO = 0x10000,     ///< A dummy id pointing at the start of audio codecs    CODEC_ID_PCM_S16LE = 0x10000,    CODEC_ID_PCM_S16BE,    CODEC_ID_PCM_U16LE,    CODEC_ID_PCM_U16BE,    CODEC_ID_PCM_S8,    CODEC_ID_PCM_U8,    CODEC_ID_PCM_MULAW,    CODEC_ID_PCM_ALAW,    CODEC_ID_PCM_S32LE,    CODEC_ID_PCM_S32BE,    CODEC_ID_PCM_U32LE,    CODEC_ID_PCM_U32BE,    CODEC_ID_PCM_S24LE,    CODEC_ID_PCM_S24BE,    CODEC_ID_PCM_U24LE,    CODEC_ID_PCM_U24BE,    CODEC_ID_PCM_S24DAUD,    CODEC_ID_PCM_ZORK,    CODEC_ID_PCM_S16LE_PLANAR,    CODEC_ID_PCM_DVD,    CODEC_ID_PCM_F32BE,    CODEC_ID_PCM_F32LE,    CODEC_ID_PCM_F64BE,    CODEC_ID_PCM_F64LE,    CODEC_ID_PCM_BLURAY,    CODEC_ID_PCM_LXF,    CODEC_ID_S302M,    CODEC_ID_PCM_S8_PLANAR,     /* various ADPCM codecs */    CODEC_ID_ADPCM_IMA_QT = 0x11000,    CODEC_ID_ADPCM_IMA_WAV,    CODEC_ID_ADPCM_IMA_DK3,    CODEC_ID_ADPCM_IMA_DK4,    CODEC_ID_ADPCM_IMA_WS,    CODEC_ID_ADPCM_IMA_SMJPEG,    CODEC_ID_ADPCM_MS,    CODEC_ID_ADPCM_4XM,    CODEC_ID_ADPCM_XA,    CODEC_ID_ADPCM_ADX,    CODEC_ID_ADPCM_EA,    CODEC_ID_ADPCM_G726,    CODEC_ID_ADPCM_CT,    CODEC_ID_ADPCM_SWF,    CODEC_ID_ADPCM_YAMAHA,    CODEC_ID_ADPCM_SBPRO_4,    CODEC_ID_ADPCM_SBPRO_3,    CODEC_ID_ADPCM_SBPRO_2,    CODEC_ID_ADPCM_THP,    CODEC_ID_ADPCM_IMA_AMV,    CODEC_ID_ADPCM_EA_R1,    CODEC_ID_ADPCM_EA_R3,    CODEC_ID_ADPCM_EA_R2,    CODEC_ID_ADPCM_IMA_EA_SEAD,    CODEC_ID_ADPCM_IMA_EA_EACS,    CODEC_ID_ADPCM_EA_XAS,    CODEC_ID_ADPCM_EA_MAXIS_XA,    CODEC_ID_ADPCM_IMA_ISS,    CODEC_ID_ADPCM_G722,    CODEC_ID_ADPCM_IMA_APC,     /* AMR */    CODEC_ID_AMR_NB = 0x12000,    CODEC_ID_AMR_WB,     /* RealAudio codecs*/    CODEC_ID_RA_144 = 0x13000,    CODEC_ID_RA_288,     /* various DPCM codecs */    CODEC_ID_ROQ_DPCM = 0x14000,    CODEC_ID_INTERPLAY_DPCM,    CODEC_ID_XAN_DPCM,    CODEC_ID_SOL_DPCM,     /* audio codecs */    CODEC_ID_MP2 = 0x15000,    CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3    CODEC_ID_AAC,    CODEC_ID_AC3,    CODEC_ID_DTS,    CODEC_ID_VORBIS,    CODEC_ID_DVAUDIO,    CODEC_ID_WMAV1,    CODEC_ID_WMAV2,    CODEC_ID_MACE3,    CODEC_ID_MACE6,    CODEC_ID_VMDAUDIO,    CODEC_ID_FLAC,    CODEC_ID_MP3ADU,    CODEC_ID_MP3ON4,    CODEC_ID_SHORTEN,    CODEC_ID_ALAC,    CODEC_ID_WESTWOOD_SND1,    CODEC_ID_GSM, ///< as in Berlin toast format    CODEC_ID_QDM2,    CODEC_ID_COOK,    CODEC_ID_TRUESPEECH,    CODEC_ID_TTA,    CODEC_ID_SMACKAUDIO,    CODEC_ID_QCELP,    CODEC_ID_WAVPACK,    CODEC_ID_DSICINAUDIO,    CODEC_ID_IMC,    CODEC_ID_MUSEPACK7,    CODEC_ID_MLP,    CODEC_ID_GSM_MS, /* as found in WAV */    CODEC_ID_ATRAC3,    CODEC_ID_VOXWARE,    CODEC_ID_APE,    CODEC_ID_NELLYMOSER,    CODEC_ID_MUSEPACK8,    CODEC_ID_SPEEX,    CODEC_ID_WMAVOICE,    CODEC_ID_WMAPRO,    CODEC_ID_WMALOSSLESS,    CODEC_ID_ATRAC3P,    CODEC_ID_EAC3,    CODEC_ID_SIPR,    CODEC_ID_MP1,    CODEC_ID_TWINVQ,    CODEC_ID_TRUEHD,    CODEC_ID_MP4ALS,    CODEC_ID_ATRAC1,    CODEC_ID_BINKAUDIO_RDFT,    CODEC_ID_BINKAUDIO_DCT,    CODEC_ID_AAC_LATM,    CODEC_ID_QDMC,    CODEC_ID_CELT,    CODEC_ID_G723_1,    CODEC_ID_G729,    CODEC_ID_8SVX_EXP,    CODEC_ID_8SVX_FIB,    CODEC_ID_BMV_AUDIO,    CODEC_ID_RALF,    CODEC_ID_IAC,    CODEC_ID_ILBC,     /* subtitle codecs */    CODEC_ID_FIRST_SUBTITLE = 0x17000,          ///< A dummy ID pointing at the start of subtitle codecs.    CODEC_ID_DVD_SUBTITLE = 0x17000,    CODEC_ID_DVB_SUBTITLE,    CODEC_ID_TEXT,  ///< raw UTF-8 text    CODEC_ID_XSUB,    CODEC_ID_SSA,    CODEC_ID_MOV_TEXT,    CODEC_ID_HDMV_PGS_SUBTITLE,    CODEC_ID_DVB_TELETEXT,    CODEC_ID_SRT,     /* other specific kind of codecs (generally used for attachments) */    CODEC_ID_FIRST_UNKNOWN = 0x18000,           ///< A dummy ID pointing at the start of various fake codecs.    CODEC_ID_TTF = 0x18000,     CODEC_ID_PROBE = 0x19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it     CODEC_ID_MPEG2TS = 0x20000, /**< _FAKE_ codec to indicate a raw MPEG-2 TS                                * stream (only used by libavformat) */    CODEC_ID_MPEG4SYSTEMS = 0x20001, /**< _FAKE_ codec to indicate a MPEG-4 Systems                                * stream (only used by libavformat) */    CODEC_ID_FFMETADATA = 0x21000,   ///< Dummy codec for streams containing only metadata information.}; #if FF_API_OLD_DECODE_AUDIO/* in bytes */#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio#endif /** * @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. */#define FF_INPUT_BUFFER_PADDING_SIZE 8 /** * @ingroup lavc_encoding * minimum encoding buffer size * Used to avoid some checks during header writing. */#define FF_MIN_BUFFER_SIZE 16384  /** * @ingroup lavc_encoding * motion estimation type. */enum Motion_Est_ID {    ME_ZERO = 1,    ///< no search, that is use 0,0 vector whenever one is needed    ME_FULL,    ME_LOG,    ME_PHODS,    ME_EPZS,        ///< enhanced predictive zonal search    ME_X1,          ///< reserved for experiments    ME_HEX,         ///< hexagon based search    ME_UMH,         ///< uneven multi-hexagon search    ME_ITER,        ///< iterative search    ME_TESA,        ///< transformed exhaustive search algorithm}; /** * @ingroup lavc_decoding */enum 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_NONKEY  = 32, ///< discard all frames except keyframes    AVDISCARD_ALL     = 48, ///< discard all}; enum AVColorPrimaries{    AVCOL_PRI_BT709       = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B    AVCOL_PRI_UNSPECIFIED = 2,    AVCOL_PRI_BT470M      = 4,    AVCOL_PRI_BT470BG     = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM    AVCOL_PRI_SMPTE170M   = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC    AVCOL_PRI_SMPTE240M   = 7, ///< functionally identical to above    AVCOL_PRI_FILM        = 8,    AVCOL_PRI_NB             , ///< Not part of ABI}; enum AVColorTransferCharacteristic{    AVCOL_TRC_BT709       = 1, ///< also ITU-R BT1361    AVCOL_TRC_UNSPECIFIED = 2,    AVCOL_TRC_GAMMA22     = 4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM    AVCOL_TRC_GAMMA28     = 5, ///< also ITU-R BT470BG    AVCOL_TRC_SMPTE240M   = 7,    AVCOL_TRC_NB             , ///< Not part of ABI}; enum AVColorSpace{    AVCOL_SPC_RGB         = 0,

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