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Diffstat (limited to 'src/main/jni/ffmpeg/include/libavcodec/avcodec.h')
| -rw-r--r-- | src/main/jni/ffmpeg/include/libavcodec/avcodec.h | 5418 |
1 files changed, 0 insertions, 5418 deletions
diff --git a/src/main/jni/ffmpeg/include/libavcodec/avcodec.h b/src/main/jni/ffmpeg/include/libavcodec/avcodec.h deleted file mode 100644 index f365775f0..000000000 --- a/src/main/jni/ffmpeg/include/libavcodec/avcodec.h +++ /dev/null @@ -1,5418 +0,0 @@ -/* - * copyright (c) 2001 Fabrice Bellard - * - * This file is part of FFmpeg. - * - * FFmpeg 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. - * - * FFmpeg 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 FFmpeg; 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 - * @ingroup libavc - * Libavcodec external API header - */ - -#include <errno.h> -#include "libavutil/samplefmt.h" -#include "libavutil/attributes.h" -#include "libavutil/avutil.h" -#include "libavutil/buffer.h" -#include "libavutil/cpu.h" -#include "libavutil/channel_layout.h" -#include "libavutil/dict.h" -#include "libavutil/frame.h" -#include "libavutil/log.h" -#include "libavutil/pixfmt.h" -#include "libavutil/rational.h" - -#include "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 - * - * 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 -#if FF_API_XVMC - AV_CODEC_ID_MPEG2VIDEO_XVMC, -#endif /* FF_API_XVMC */ - AV_CODEC_ID_H261, - AV_CODEC_ID_H263, - AV_CODEC_ID_RV10, - AV_CODEC_ID_RV20, - AV_CODEC_ID_MJPEG, - AV_CODEC_ID_MJPEGB, - AV_CODEC_ID_LJPEG, - AV_CODEC_ID_SP5X, - AV_CODEC_ID_JPEGLS, - AV_CODEC_ID_MPEG4, - AV_CODEC_ID_RAWVIDEO, - AV_CODEC_ID_MSMPEG4V1, - AV_CODEC_ID_MSMPEG4V2, - AV_CODEC_ID_MSMPEG4V3, - AV_CODEC_ID_WMV1, - AV_CODEC_ID_WMV2, - AV_CODEC_ID_H263P, - AV_CODEC_ID_H263I, - AV_CODEC_ID_FLV1, - AV_CODEC_ID_SVQ1, - AV_CODEC_ID_SVQ3, - AV_CODEC_ID_DVVIDEO, - AV_CODEC_ID_HUFFYUV, - AV_CODEC_ID_CYUV, - AV_CODEC_ID_H264, - AV_CODEC_ID_INDEO3, - AV_CODEC_ID_VP3, - AV_CODEC_ID_THEORA, - AV_CODEC_ID_ASV1, - AV_CODEC_ID_ASV2, - AV_CODEC_ID_FFV1, - AV_CODEC_ID_4XM, - AV_CODEC_ID_VCR1, - AV_CODEC_ID_CLJR, - AV_CODEC_ID_MDEC, - AV_CODEC_ID_ROQ, - AV_CODEC_ID_INTERPLAY_VIDEO, - AV_CODEC_ID_XAN_WC3, - AV_CODEC_ID_XAN_WC4, - AV_CODEC_ID_RPZA, - AV_CODEC_ID_CINEPAK, - AV_CODEC_ID_WS_VQA, - AV_CODEC_ID_MSRLE, - AV_CODEC_ID_MSVIDEO1, - AV_CODEC_ID_IDCIN, - AV_CODEC_ID_8BPS, - AV_CODEC_ID_SMC, - AV_CODEC_ID_FLIC, - AV_CODEC_ID_TRUEMOTION1, - AV_CODEC_ID_VMDVIDEO, - AV_CODEC_ID_MSZH, - AV_CODEC_ID_ZLIB, - AV_CODEC_ID_QTRLE, - AV_CODEC_ID_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_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, - - /* 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, - /* new PCM "codecs" should be added right below this line starting with - * an explicit value of for example 0x10800 - */ - - /* 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, -#if FF_API_VIMA_DECODER - AV_CODEC_ID_VIMA = AV_CODEC_ID_ADPCM_VIMA, -#endif - - 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, - - /* 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, - - /* 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, -#if FF_API_VOXWARE - AV_CODEC_ID_VOXWARE, -#endif - 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_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, - - /* 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, - - /* 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_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 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. - * 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 AV_INPUT_BUFFER_PADDING_SIZE 32 - -/** - * @ingroup lavc_encoding - * minimum encoding buffer size - * Used to avoid some checks during header writing. - */ -#define AV_INPUT_BUFFER_MIN_SIZE 16384 - -#if FF_API_WITHOUT_PREFIX -/** - * @deprecated use AV_INPUT_BUFFER_PADDING_SIZE instead - */ -#define FF_INPUT_BUFFER_PADDING_SIZE 32 - -/** - * @deprecated use AV_INPUT_BUFFER_MIN_SIZE instead - */ -#define FF_MIN_BUFFER_SIZE 16384 -#endif /* FF_API_WITHOUT_PREFIX */ - -/** - * @ingroup lavc_encoding - * motion estimation type. - * @deprecated use codec private option instead - */ -#if FF_API_MOTION_EST -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_TESA, ///< transformed exhaustive search algorithm - ME_ITER=50, ///< iterative search -}; -#endif - -/** - * @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_NONINTRA= 24, ///< discard all non intra frames - AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes - AVDISCARD_ALL = 48, ///< discard all -}; - -enum AVAudioServiceType { - AV_AUDIO_SERVICE_TYPE_MAIN = 0, - AV_AUDIO_SERVICE_TYPE_EFFECTS = 1, - AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED = 2, - AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED = 3, - AV_AUDIO_SERVICE_TYPE_DIALOGUE = 4, - AV_AUDIO_SERVICE_TYPE_COMMENTARY = 5, - AV_AUDIO_SERVICE_TYPE_EMERGENCY = 6, - AV_AUDIO_SERVICE_TYPE_VOICE_OVER = 7, - AV_AUDIO_SERVICE_TYPE_KARAOKE = 8, - AV_AUDIO_SERVICE_TYPE_NB , ///< Not part of ABI -}; - -/** - * @ingroup lavc_encoding - */ -typedef struct RcOverride{ - int start_frame; - int end_frame; - int qscale; // If this is 0 then quality_factor will be used instead. - float quality_factor; -} RcOverride; - -#if FF_API_MAX_BFRAMES -/** - * @deprecated there is no libavcodec-wide limit on the number of B-frames - */ -#define FF_MAX_B_FRAMES 16 -#endif - -/* encoding support - These flags can be passed in AVCodecContext.flags before initialization. - Note: Not everything is supported yet. -*/ - -/** - * Allow decoders to produce frames with data planes that are not aligned - * to CPU requirements (e.g. due to cropping). - */ -#define AV_CODEC_FLAG_UNALIGNED (1 << 0) -/** - * Use fixed qscale. - */ -#define AV_CODEC_FLAG_QSCALE (1 << 1) -/** - * 4 MV per MB allowed / advanced prediction for H.263. - */ -#define AV_CODEC_FLAG_4MV (1 << 2) -/** - * Output even those frames that might be corrupted. - */ -#define AV_CODEC_FLAG_OUTPUT_CORRUPT (1 << 3) -/** - * Use qpel MC. - */ -#define AV_CODEC_FLAG_QPEL (1 << 4) -/** - * Use internal 2pass ratecontrol in first pass mode. - */ -#define AV_CODEC_FLAG_PASS1 (1 << 9) -/** - * Use internal 2pass ratecontrol in second pass mode. - */ -#define AV_CODEC_FLAG_PASS2 (1 << 10) -/** - * loop filter. - */ -#define AV_CODEC_FLAG_LOOP_FILTER (1 << 11) -/** - * Only decode/encode grayscale. - */ -#define AV_CODEC_FLAG_GRAY (1 << 13) -/** - * error[?] variables will be set during encoding. - */ -#define AV_CODEC_FLAG_PSNR (1 << 15) -/** - * Input bitstream might be truncated at a random location - * instead of only at frame boundaries. - */ -#define AV_CODEC_FLAG_TRUNCATED (1 << 16) -/** - * Use interlaced DCT. - */ -#define AV_CODEC_FLAG_INTERLACED_DCT (1 << 18) -/** - * Force low delay. - */ -#define AV_CODEC_FLAG_LOW_DELAY (1 << 19) -/** - * Place global headers in extradata instead of every keyframe. - */ -#define AV_CODEC_FLAG_GLOBAL_HEADER (1 << 22) -/** - * Use only bitexact stuff (except (I)DCT). - */ -#define AV_CODEC_FLAG_BITEXACT (1 << 23) -/* Fx : Flag for h263+ extra options */ -/** - * H.263 advanced intra coding / MPEG-4 AC prediction - */ -#define AV_CODEC_FLAG_AC_PRED (1 << 24) -/** - * interlaced motion estimation - */ -#define AV_CODEC_FLAG_INTERLACED_ME (1 << 29) -#define AV_CODEC_FLAG_CLOSED_GOP (1U << 31) - -/** - * Allow non spec compliant speedup tricks. - */ -#define AV_CODEC_FLAG2_FAST (1 << 0) -/** - * Skip bitstream encoding. - */ -#define AV_CODEC_FLAG2_NO_OUTPUT (1 << 2) -/** - * Place global headers at every keyframe instead of in extradata. - */ -#define AV_CODEC_FLAG2_LOCAL_HEADER (1 << 3) - -/** - * timecode is in drop frame format. DEPRECATED!!!! - */ -#define AV_CODEC_FLAG2_DROP_FRAME_TIMECODE (1 << 13) - -/** - * Input bitstream might be truncated at a packet boundaries - * instead of only at frame boundaries. - */ -#define AV_CODEC_FLAG2_CHUNKS (1 << 15) -/** - * Discard cropping information from SPS. - */ -#define AV_CODEC_FLAG2_IGNORE_CROP (1 << 16) - -/** - * Show all frames before the first keyframe - */ -#define AV_CODEC_FLAG2_SHOW_ALL (1 << 22) -/** - * Export motion vectors through frame side data - */ -#define AV_CODEC_FLAG2_EXPORT_MVS (1 << 28) -/** - * Do not skip samples and export skip information as frame side data - */ -#define AV_CODEC_FLAG2_SKIP_MANUAL (1 << 29) - -/* Unsupported options : - * Syntax Arithmetic coding (SAC) - * Reference Picture Selection - * Independent Segment Decoding */ -/* /Fx */ -/* codec capabilities */ - -/** - * 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) - -#if FF_API_CAP_VDPAU -/** - * Codec can export data for HW decoding (VDPAU). - */ -#define AV_CODEC_CAP_HWACCEL_VDPAU (1 << 7) -#endif - -/** - * Codec can output multiple frames per AVPacket - * Normally demuxers return one frame at a time, demuxers which do not do - * are connected to a parser to split what they return into proper frames. - * This flag is reserved to the very rare category of codecs which have a - * bitstream that cannot be split into frames without timeconsuming - * operations like full decoding. Demuxers carring such bitstreams thus - * may return multiple frames in a packet. This has many disadvantages like - * prohibiting stream copy in many cases thus it should only be considered - * as a last resort. - */ -#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) -/** - * Codec is intra only. - */ -#define AV_CODEC_CAP_INTRA_ONLY 0x40000000 -/** - * Codec is lossless. - */ -#define AV_CODEC_CAP_LOSSLESS 0x80000000 - - -#if FF_API_WITHOUT_PREFIX -/** - * Allow decoders to produce frames with data planes that are not aligned - * to CPU requirements (e.g. due to cropping). - */ -#define CODEC_FLAG_UNALIGNED AV_CODEC_FLAG_UNALIGNED -#define CODEC_FLAG_QSCALE AV_CODEC_FLAG_QSCALE -#define CODEC_FLAG_4MV AV_CODEC_FLAG_4MV -#define CODEC_FLAG_OUTPUT_CORRUPT AV_CODEC_FLAG_OUTPUT_CORRUPT -#define CODEC_FLAG_QPEL AV_CODEC_FLAG_QPEL -#if FF_API_GMC -/** - * @deprecated use the "gmc" private option of the libxvid encoder - */ -#define CODEC_FLAG_GMC 0x0020 ///< Use GMC. -#endif -#if FF_API_MV0 -/** - * @deprecated use the flag "mv0" in the "mpv_flags" private option of the - * mpegvideo encoders - */ -#define CODEC_FLAG_MV0 0x0040 -#endif -#if FF_API_INPUT_PRESERVED -/** - * @deprecated passing reference-counted frames to the encoders replaces this - * flag - */ -#define CODEC_FLAG_INPUT_PRESERVED 0x0100 -#endif -#define CODEC_FLAG_PASS1 AV_CODEC_FLAG_PASS1 -#define CODEC_FLAG_PASS2 AV_CODEC_FLAG_PASS2 -#define CODEC_FLAG_GRAY AV_CODEC_FLAG_GRAY -#if FF_API_EMU_EDGE -/** - * @deprecated edges are not used/required anymore. I.e. this flag is now always - * set. - */ -#define CODEC_FLAG_EMU_EDGE 0x4000 -#endif -#define CODEC_FLAG_PSNR AV_CODEC_FLAG_PSNR -#define CODEC_FLAG_TRUNCATED AV_CODEC_FLAG_TRUNCATED - -#if FF_API_NORMALIZE_AQP -/** - * @deprecated use the flag "naq" in the "mpv_flags" private option of the - * mpegvideo encoders - */ -#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 -#endif -#define CODEC_FLAG_INTERLACED_DCT AV_CODEC_FLAG_INTERLACED_DCT -#define CODEC_FLAG_LOW_DELAY AV_CODEC_FLAG_LOW_DELAY -#define CODEC_FLAG_GLOBAL_HEADER AV_CODEC_FLAG_GLOBAL_HEADER -#define CODEC_FLAG_BITEXACT AV_CODEC_FLAG_BITEXACT -#define CODEC_FLAG_AC_PRED AV_CODEC_FLAG_AC_PRED -#define CODEC_FLAG_LOOP_FILTER AV_CODEC_FLAG_LOOP_FILTER -#define CODEC_FLAG_INTERLACED_ME AV_CODEC_FLAG_INTERLACED_ME -#define CODEC_FLAG_CLOSED_GOP AV_CODEC_FLAG_CLOSED_GOP -#define CODEC_FLAG2_FAST AV_CODEC_FLAG2_FAST -#define CODEC_FLAG2_NO_OUTPUT AV_CODEC_FLAG2_NO_OUTPUT -#define CODEC_FLAG2_LOCAL_HEADER AV_CODEC_FLAG2_LOCAL_HEADER -#define CODEC_FLAG2_DROP_FRAME_TIMECODE AV_CODEC_FLAG2_DROP_FRAME_TIMECODE -#define CODEC_FLAG2_IGNORE_CROP AV_CODEC_FLAG2_IGNORE_CROP - -#define CODEC_FLAG2_CHUNKS AV_CODEC_FLAG2_CHUNKS -#define CODEC_FLAG2_SHOW_ALL AV_CODEC_FLAG2_SHOW_ALL -#define CODEC_FLAG2_EXPORT_MVS AV_CODEC_FLAG2_EXPORT_MVS -#define CODEC_FLAG2_SKIP_MANUAL AV_CODEC_FLAG2_SKIP_MANUAL - -/* Unsupported options : - * Syntax Arithmetic coding (SAC) - * Reference Picture Selection - * Independent Segment Decoding */ -/* /Fx */ -/* codec capabilities */ - -#define CODEC_CAP_DRAW_HORIZ_BAND AV_CODEC_CAP_DRAW_HORIZ_BAND ///< Decoder can use draw_horiz_band callback. -/** - * Codec uses get_buffer() for allocating buffers and supports custom allocators. - * If not set, it might not use get_buffer() at all or use operations that - * assume the buffer was allocated by avcodec_default_get_buffer. - */ -#define CODEC_CAP_DR1 AV_CODEC_CAP_DR1 -#define CODEC_CAP_TRUNCATED AV_CODEC_CAP_TRUNCATED -#if FF_API_XVMC -/* Codec can export data for HW decoding. This flag indicates that - * the codec would call get_format() with list that might contain HW accelerated - * pixel formats (XvMC, VDPAU, VAAPI, etc). The application can pick any of them - * including raw image format. - * The application can use the passed context to determine bitstream version, - * chroma format, resolution etc. - */ -#define CODEC_CAP_HWACCEL 0x0010 -#endif /* FF_API_XVMC */ -/** - * 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 CODEC_CAP_DELAY AV_CODEC_CAP_DELAY -/** - * Codec can be fed a final frame with a smaller size. - * This can be used to prevent truncation of the last audio samples. - */ -#define CODEC_CAP_SMALL_LAST_FRAME AV_CODEC_CAP_SMALL_LAST_FRAME -#if FF_API_CAP_VDPAU -/** - * Codec can export data for HW decoding (VDPAU). - */ -#define CODEC_CAP_HWACCEL_VDPAU AV_CODEC_CAP_HWACCEL_VDPAU -#endif -/** - * Codec can output multiple frames per AVPacket - * Normally demuxers return one frame at a time, demuxers which do not do - * are connected to a parser to split what they return into proper frames. - * This flag is reserved to the very rare category of codecs which have a - * bitstream that cannot be split into frames without timeconsuming - * operations like full decoding. Demuxers carring such bitstreams thus - * may return multiple frames in a packet. This has many disadvantages like - * prohibiting stream copy in many cases thus it should only be considered - * as a last resort. - */ -#define CODEC_CAP_SUBFRAMES AV_CODEC_CAP_SUBFRAMES -/** - * Codec is experimental and is thus avoided in favor of non experimental - * encoders - */ -#define CODEC_CAP_EXPERIMENTAL AV_CODEC_CAP_EXPERIMENTAL -/** - * Codec should fill in channel configuration and samplerate instead of container - */ -#define CODEC_CAP_CHANNEL_CONF AV_CODEC_CAP_CHANNEL_CONF -#if FF_API_NEG_LINESIZES -/** - * @deprecated no codecs use this capability - */ -#define CODEC_CAP_NEG_LINESIZES 0x0800 -#endif -/** - * Codec supports frame-level multithreading. - */ -#define CODEC_CAP_FRAME_THREADS AV_CODEC_CAP_FRAME_THREADS -/** - * Codec supports slice-based (or partition-based) multithreading. - */ -#define CODEC_CAP_SLICE_THREADS AV_CODEC_CAP_SLICE_THREADS -/** - * Codec supports changed parameters at any point. - */ -#define CODEC_CAP_PARAM_CHANGE AV_CODEC_CAP_PARAM_CHANGE -/** - * Codec supports avctx->thread_count == 0 (auto). - */ -#define CODEC_CAP_AUTO_THREADS AV_CODEC_CAP_AUTO_THREADS -/** - * Audio encoder supports receiving a different number of samples in each call. - */ -#define CODEC_CAP_VARIABLE_FRAME_SIZE AV_CODEC_CAP_VARIABLE_FRAME_SIZE -/** - * Codec is intra only. - */ -#define CODEC_CAP_INTRA_ONLY AV_CODEC_CAP_INTRA_ONLY -/** - * Codec is lossless. - */ -#define CODEC_CAP_LOSSLESS AV_CODEC_CAP_LOSSLESS - -/** - * HWAccel is experimental and is thus avoided in favor of non experimental - * codecs - */ -#define HWACCEL_CODEC_CAP_EXPERIMENTAL 0x0200 -#endif /* FF_API_WITHOUT_PREFIX */ - -#if FF_API_MB_TYPE -//The following defines may change, don't expect compatibility if you use them. -#define MB_TYPE_INTRA4x4 0x0001 -#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific -#define MB_TYPE_INTRA_PCM 0x0004 //FIXME H.264-specific -#define MB_TYPE_16x16 0x0008 -#define MB_TYPE_16x8 0x0010 -#define MB_TYPE_8x16 0x0020 -#define MB_TYPE_8x8 0x0040 -#define MB_TYPE_INTERLACED 0x0080 -#define MB_TYPE_DIRECT2 0x0100 //FIXME -#define MB_TYPE_ACPRED 0x0200 -#define MB_TYPE_GMC 0x0400 -#define MB_TYPE_SKIP 0x0800 -#define MB_TYPE_P0L0 0x1000 -#define MB_TYPE_P1L0 0x2000 -#define MB_TYPE_P0L1 0x4000 -#define MB_TYPE_P1L1 0x8000 -#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0) -#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1) -#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1) -#define MB_TYPE_QUANT 0x00010000 -#define MB_TYPE_CBP 0x00020000 -//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...) -#endif - -/** - * Pan Scan area. - * This specifies the area which should be displayed. - * Note there may be multiple such areas for one frame. - */ -typedef struct AVPanScan{ - /** - * id - * - encoding: Set by user. - * - decoding: Set by libavcodec. - */ - int id; - - /** - * width and height in 1/16 pel - * - encoding: Set by user. - * - decoding: Set by libavcodec. - */ - int width; - int height; - - /** - * position of the top left corner in 1/16 pel for up to 3 fields/frames - * - encoding: Set by user. - * - decoding: Set by libavcodec. - */ - int16_t position[3][2]; -}AVPanScan; - -/** - * This structure describes the bitrate properties of an encoded bitstream. It - * roughly corresponds to a subset the VBV parameters for MPEG-2 or HRD - * parameters for H.264/HEVC. - */ -typedef struct AVCPBProperties { - /** - * Maximum bitrate of the stream, in bits per second. - * Zero if unknown or unspecified. - */ - int max_bitrate; - /** - * Minimum bitrate of the stream, in bits per second. - * Zero if unknown or unspecified. - */ - int min_bitrate; - /** - * Average bitrate of the stream, in bits per second. - * Zero if unknown or unspecified. - */ - int avg_bitrate; - - /** - * The size of the buffer to which the ratecontrol is applied, in bits. - * Zero if unknown or unspecified. - */ - int buffer_size; - - /** - * The delay between the time the packet this structure is associated with - * is received and the time when it should be decoded, in periods of a 27MHz - * clock. - * - * UINT64_MAX when unknown or unspecified. - */ - uint64_t vbv_delay; -} AVCPBProperties; - -#if FF_API_QSCALE_TYPE -#define FF_QSCALE_TYPE_MPEG1 0 -#define FF_QSCALE_TYPE_MPEG2 1 -#define FF_QSCALE_TYPE_H264 2 -#define FF_QSCALE_TYPE_VP56 3 -#endif - -/** - * The decoder will keep a reference to the frame and may reuse it later. - */ -#define AV_GET_BUFFER_FLAG_REF (1 << 0) - -/** - * @defgroup lavc_packet AVPacket - * - * Types and functions for working with AVPacket. - * @{ - */ -enum AVPacketSideDataType { - AV_PKT_DATA_PALETTE, - AV_PKT_DATA_NEW_EXTRADATA, - - /** - * An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows: - * @code - * u32le param_flags - * if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) - * s32le channel_count - * if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) - * u64le channel_layout - * if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) - * s32le sample_rate - * if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) - * s32le width - * s32le height - * @endcode - */ - AV_PKT_DATA_PARAM_CHANGE, - - /** - * An AV_PKT_DATA_H263_MB_INFO side data packet contains a number of - * structures with info about macroblocks relevant to splitting the - * packet into smaller packets on macroblock edges (e.g. as for RFC 2190). - * That is, it does not necessarily contain info about all macroblocks, - * as long as the distance between macroblocks in the info is smaller - * than the target payload size. - * Each MB info structure is 12 bytes, and is laid out as follows: - * @code - * u32le bit offset from the start of the packet - * u8 current quantizer at the start of the macroblock - * u8 GOB number - * u16le macroblock address within the GOB - * u8 horizontal MV predictor - * u8 vertical MV predictor - * u8 horizontal MV predictor for block number 3 - * u8 vertical MV predictor for block number 3 - * @endcode - */ - AV_PKT_DATA_H263_MB_INFO, - - /** - * 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=70, - - /** - * An AV_PKT_DATA_JP_DUALMONO side data packet indicates that - * the packet may contain "dual mono" audio specific to Japanese DTV - * and if it is true, recommends only the selected channel to be used. - * @code - * u8 selected channels (0=mail/left, 1=sub/right, 2=both) - * @endcode - */ - AV_PKT_DATA_JP_DUALMONO, - - /** - * A list of zero terminated key/value strings. There is no end marker for - * the list, so it is required to rely on the side data size to stop. - */ - AV_PKT_DATA_STRINGS_METADATA, - - /** - * Subtitle event position - * @code - * u32le x1 - * u32le y1 - * u32le x2 - * u32le y2 - * @endcode - */ - AV_PKT_DATA_SUBTITLE_POSITION, - - /** - * Data found in BlockAdditional element of matroska container. There is - * no end marker for the data, so it is required to rely on the side data - * size to recognize the end. 8 byte id (as found in BlockAddId) followed - * by data. - */ - AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL, - - /** - * 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, -}; - -#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 - -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. - * Removal, reordering and changes to existing fields require a major - * version bump. - * Please use AVOptions (av_opt* / av_set/get*()) to access these fields from user - * applications. - * sizeof(AVCodecContext) must not be used outside libav*. - */ -typedef struct AVCodecContext { - /** - * information on struct for av_log - * - set by avcodec_alloc_context3 - */ - const AVClass *av_class; - int log_level_offset; - - enum AVMediaType codec_type; /* see AVMEDIA_TYPE_xxx */ - const struct AVCodec *codec; -#if FF_API_CODEC_NAME - /** - * @deprecated this field is not used for anything in libavcodec - */ - attribute_deprecated - char codec_name[32]; -#endif - enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */ - - /** - * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). - * This is used to work around some encoder bugs. - * A demuxer should set this to what is stored in the field used to identify the codec. - * If there are multiple such fields in a container then the demuxer should choose the one - * which maximizes the information about the used codec. - * If the codec tag field in a container is larger than 32 bits then the demuxer should - * remap the longer ID to 32 bits with a table or other structure. Alternatively a new - * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated - * first. - * - encoding: Set by user, if not then the default based on codec_id will be used. - * - decoding: Set by user, will be converted to uppercase by libavcodec during init. - */ - unsigned int codec_tag; - -#if FF_API_STREAM_CODEC_TAG - /** - * @deprecated this field is unused - */ - attribute_deprecated - unsigned int stream_codec_tag; -#endif - - void *priv_data; - - /** - * Private context used for internal data. - * - * Unlike priv_data, this is not codec-specific. It is used in general - * libavcodec functions. - */ - struct AVCodecInternal *internal; - - /** - * Private data of the user, can be used to carry app specific stuff. - * - encoding: Set by user. - * - decoding: Set by user. - */ - void *opaque; - - /** - * the average bitrate - * - encoding: Set by user; unused for constant quantizer encoding. - * - decoding: Set by user, may be overwritten by libavcodec - * if this info is available in the stream - */ - int64_t bit_rate; - - /** - * number of bits the bitstream is allowed to diverge from the reference. - * the reference can be CBR (for CBR pass1) or VBR (for pass2) - * - encoding: Set by user; unused for constant quantizer encoding. - * - decoding: unused - */ - int bit_rate_tolerance; - - /** - * Global quality for codecs which cannot change it per frame. - * This should be proportional to MPEG-1/2/4 qscale. - * - encoding: Set by user. - * - decoding: unused - */ - int global_quality; - - /** - * - encoding: Set by user. - * - decoding: unused - */ - int compression_level; -#define FF_COMPRESSION_DEFAULT -1 - - /** - * AV_CODEC_FLAG_*. - * - encoding: Set by user. - * - decoding: Set by user. - */ - int flags; - - /** - * AV_CODEC_FLAG2_* - * - encoding: Set by user. - * - decoding: Set by user. - */ - int flags2; - - /** - * some codecs need / can use extradata like Huffman tables. - * mjpeg: Huffman tables - * rv10: additional flags - * mpeg4: global headers (they can be in the bitstream or here) - * The allocated memory should be AV_INPUT_BUFFER_PADDING_SIZE bytes larger - * than extradata_size to avoid problems if it is read with the bitstream reader. - * The bytewise contents of extradata must not depend on the architecture or CPU endianness. - * - encoding: Set/allocated/freed by libavcodec. - * - decoding: Set/allocated/freed by user. - */ - uint8_t *extradata; - int extradata_size; - - /** - * This is the fundamental unit of time (in seconds) in terms - * of which frame timestamps are represented. For fixed-fps content, - * timebase should be 1/framerate and timestamp increments should be - * identically 1. - * This often, but not always is the inverse of the frame rate or field rate - * for video. - * - encoding: MUST be set by user. - * - decoding: the use of this field for decoding is deprecated. - * Use framerate instead. - */ - AVRational time_base; - - /** - * For some codecs, the time base is closer to the field rate than the frame rate. - * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration - * if no telecine is used ... - * - * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2. - */ - int ticks_per_frame; - - /** - * Codec delay. - * - * Encoding: Number of frames delay there will be from the encoder input to - * the decoder output. (we assume the decoder matches the spec) - * Decoding: Number of frames delay in addition to what a standard decoder - * as specified in the spec would produce. - * - * Video: - * Number of frames the decoded output will be delayed relative to the - * encoded input. - * - * Audio: - * For encoding, this field is unused (see initial_padding). - * - * For decoding, this is the number of samples the decoder needs to - * output before the decoder's output is valid. When seeking, you should - * start decoding this many samples prior to your desired seek point. - * - * - encoding: Set by libavcodec. - * - decoding: Set by libavcodec. - */ - int delay; - - - /* video only */ - /** - * picture width / height. - * - * @note Those fields may not match the values of the last - * AVFrame outputted by avcodec_decode_video2 due frame - * reordering. - * - * - encoding: MUST be set by user. - * - decoding: May be set by the user before opening the decoder if known e.g. - * from the container. Some decoders will require the dimensions - * to be set by the caller. During decoding, the decoder may - * overwrite those values as required while parsing the data. - */ - int width, height; - - /** - * Bitstream width / height, may be different from width/height e.g. when - * the decoded frame is cropped before being output or lowres is enabled. - * - * @note Those field may not match the value of the last - * AVFrame outputted by avcodec_decode_video2 due frame - * reordering. - * - * - encoding: unused - * - decoding: May be set by the user before opening the decoder if known - * e.g. from the container. During decoding, the decoder may - * overwrite those values as required while parsing the data. - */ - int coded_width, coded_height; - -#if FF_API_ASPECT_EXTENDED -#define FF_ASPECT_EXTENDED 15 -#endif - - /** - * the number of pictures in a group of pictures, or 0 for intra_only - * - encoding: Set by user. - * - decoding: unused - */ - int gop_size; - - /** - * Pixel format, see AV_PIX_FMT_xxx. - * May be set by the demuxer if known from headers. - * May be overridden by the decoder if it knows better. - * - * @note This field may not match the value of the last - * AVFrame outputted by avcodec_decode_video2 due frame - * reordering. - * - * - encoding: Set by user. - * - decoding: Set by user if known, overridden by libavcodec while - * parsing the data. - */ - enum AVPixelFormat pix_fmt; - -#if FF_API_MOTION_EST - /** - * This option does nothing - * @deprecated use codec private options instead - */ - attribute_deprecated int me_method; -#endif - - /** - * If non NULL, 'draw_horiz_band' is called by the libavcodec - * decoder to draw a horizontal band. It improves cache usage. Not - * all codecs can do that. You must check the codec capabilities - * beforehand. - * When multithreading is used, it may be called from multiple threads - * at the same time; threads might draw different parts of the same AVFrame, - * or multiple AVFrames, and there is no guarantee that slices will be drawn - * in order. - * The function is also used by hardware acceleration APIs. - * It is called at least once during frame decoding to pass - * the data needed for hardware render. - * In that mode instead of pixel data, AVFrame points to - * a structure specific to the acceleration API. The application - * reads the structure and can change some fields to indicate progress - * or mark state. - * - encoding: unused - * - decoding: Set by user. - * @param height the height of the slice - * @param y the y position of the slice - * @param type 1->top field, 2->bottom field, 3->frame - * @param offset offset into the AVFrame.data from which the slice should be read - */ - void (*draw_horiz_band)(struct AVCodecContext *s, - const AVFrame *src, int offset[AV_NUM_DATA_POINTERS], - int y, int type, int height); - - /** - * callback to negotiate the pixelFormat - * @param fmt is the list of formats which are supported by the codec, - * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality. - * The first is always the native one. - * @note The callback may be called again immediately if initialization for - * the selected (hardware-accelerated) pixel format failed. - * @warning Behavior is undefined if the callback returns a value not - * in the fmt list of formats. - * @return the chosen format - * - encoding: unused - * - decoding: Set by user, if not set the native format will be chosen. - */ - enum AVPixelFormat (*get_format)(struct AVCodecContext *s, const enum AVPixelFormat * fmt); - - /** - * maximum number of B-frames between non-B-frames - * Note: The output will be delayed by max_b_frames+1 relative to the input. - * - encoding: Set by user. - * - decoding: unused - */ - int max_b_frames; - - /** - * qscale factor between IP and B-frames - * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset). - * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). - * - encoding: Set by user. - * - decoding: unused - */ - float b_quant_factor; - -#if FF_API_RC_STRATEGY - /** @deprecated use codec private option instead */ - attribute_deprecated int rc_strategy; -#define FF_RC_STRATEGY_XVID 1 -#endif - - int b_frame_strategy; - - /** - * qscale offset between IP and B-frames - * - encoding: Set by user. - * - decoding: unused - */ - float b_quant_offset; - - /** - * Size of the frame reordering buffer in the decoder. - * For MPEG-2 it is 1 IPB or 0 low delay IP. - * - encoding: Set by libavcodec. - * - decoding: Set by libavcodec. - */ - int has_b_frames; - - /** - * 0-> h263 quant 1-> mpeg quant - * - encoding: Set by user. - * - decoding: unused - */ - int mpeg_quant; - - /** - * qscale factor between P and I-frames - * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset). - * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). - * - encoding: Set by user. - * - decoding: unused - */ - float i_quant_factor; - - /** - * qscale offset between P and I-frames - * - encoding: Set by user. - * - decoding: unused - */ - float i_quant_offset; - - /** - * luminance masking (0-> disabled) - * - encoding: Set by user. - * - decoding: unused - */ - float lumi_masking; - - /** - * temporary complexity masking (0-> disabled) - * - encoding: Set by user. - * - decoding: unused - */ - float temporal_cplx_masking; - - /** - * spatial complexity masking (0-> disabled) - * - encoding: Set by user. - * - decoding: unused - */ - float spatial_cplx_masking; - - /** - * p block masking (0-> disabled) - * - encoding: Set by user. - * - decoding: unused - */ - float p_masking; - - /** - * darkness masking (0-> disabled) - * - encoding: Set by user. - * - decoding: unused - */ - float dark_masking; - - /** - * slice count - * - encoding: Set by libavcodec. - * - decoding: Set by user (or 0). - */ - int slice_count; - /** - * prediction method (needed for huffyuv) - * - encoding: Set by user. - * - decoding: unused - */ - int prediction_method; -#define FF_PRED_LEFT 0 -#define FF_PRED_PLANE 1 -#define FF_PRED_MEDIAN 2 - - /** - * slice offsets in the frame in bytes - * - encoding: Set/allocated by libavcodec. - * - decoding: Set/allocated by user (or NULL). - */ - int *slice_offset; - - /** - * sample aspect ratio (0 if unknown) - * That is the width of a pixel divided by the height of the pixel. - * Numerator and denominator must be relatively prime and smaller than 256 for some video standards. - * - encoding: Set by user. - * - decoding: Set by libavcodec. - */ - AVRational sample_aspect_ratio; - - /** - * motion estimation comparison function - * - encoding: Set by user. - * - decoding: unused - */ - int me_cmp; - /** - * subpixel motion estimation comparison function - * - encoding: Set by user. - * - decoding: unused - */ - int me_sub_cmp; - /** - * macroblock comparison function (not supported yet) - * - encoding: Set by user. - * - decoding: unused - */ - int mb_cmp; - /** - * interlaced DCT comparison function - * - encoding: Set by user. - * - decoding: unused - */ - int ildct_cmp; -#define FF_CMP_SAD 0 -#define FF_CMP_SSE 1 -#define FF_CMP_SATD 2 -#define FF_CMP_DCT 3 -#define FF_CMP_PSNR 4 -#define FF_CMP_BIT 5 -#define FF_CMP_RD 6 -#define FF_CMP_ZERO 7 -#define FF_CMP_VSAD 8 -#define FF_CMP_VSSE 9 -#define FF_CMP_NSSE 10 -#define FF_CMP_W53 11 -#define FF_CMP_W97 12 -#define FF_CMP_DCTMAX 13 -#define FF_CMP_DCT264 14 -#define FF_CMP_CHROMA 256 - - /** - * ME diamond size & shape - * - encoding: Set by user. - * - decoding: unused - */ - int dia_size; - - /** - * amount of previous MV predictors (2a+1 x 2a+1 square) - * - encoding: Set by user. - * - decoding: unused - */ - int last_predictor_count; - - /** - * prepass for motion estimation - * - encoding: Set by user. - * - decoding: unused - */ - int pre_me; - - /** - * motion estimation prepass comparison function - * - encoding: Set by user. - * - decoding: unused - */ - int me_pre_cmp; - - /** - * ME prepass diamond size & shape - * - encoding: Set by user. - * - decoding: unused - */ - int pre_dia_size; - - /** - * subpel ME quality - * - encoding: Set by user. - * - decoding: unused - */ - int me_subpel_quality; - -#if FF_API_AFD - /** - * DTG active format information (additional aspect ratio - * information only used in DVB MPEG-2 transport streams) - * 0 if not set. - * - * - encoding: unused - * - decoding: Set by decoder. - * @deprecated Deprecated in favor of AVSideData - */ - attribute_deprecated int dtg_active_format; -#define FF_DTG_AFD_SAME 8 -#define FF_DTG_AFD_4_3 9 -#define FF_DTG_AFD_16_9 10 -#define FF_DTG_AFD_14_9 11 -#define FF_DTG_AFD_4_3_SP_14_9 13 -#define FF_DTG_AFD_16_9_SP_14_9 14 -#define FF_DTG_AFD_SP_4_3 15 -#endif /* FF_API_AFD */ - - /** - * maximum motion estimation search range in subpel units - * If 0 then no limit. - * - * - encoding: Set by user. - * - decoding: unused - */ - int me_range; - -#if FF_API_QUANT_BIAS - /** - * @deprecated use encoder private option instead - */ - attribute_deprecated int intra_quant_bias; -#define FF_DEFAULT_QUANT_BIAS 999999 - - /** - * @deprecated use encoder private option instead - */ - attribute_deprecated int inter_quant_bias; -#endif - - /** - * slice flags - * - encoding: unused - * - decoding: Set by user. - */ - int slice_flags; -#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display -#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics) -#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1) - -#if FF_API_XVMC - /** - * XVideo Motion Acceleration - * - encoding: forbidden - * - decoding: set by decoder - * @deprecated XvMC doesn't need it anymore. - */ - attribute_deprecated int xvmc_acceleration; -#endif /* FF_API_XVMC */ - - /** - * macroblock decision mode - * - encoding: Set by user. - * - decoding: unused - */ - int mb_decision; -#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp -#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits -#define FF_MB_DECISION_RD 2 ///< rate distortion - - /** - * custom intra quantization matrix - * - encoding: Set by user, can be NULL. - * - decoding: Set by libavcodec. - */ - uint16_t *intra_matrix; - - /** - * custom inter quantization matrix - * - encoding: Set by user, can be NULL. - * - decoding: Set by libavcodec. - */ - uint16_t *inter_matrix; - - /** - * scene change detection threshold - * 0 is default, larger means fewer detected scene changes. - * - encoding: Set by user. - * - decoding: unused - */ - int scenechange_threshold; - - /** - * noise reduction strength - * - encoding: Set by user. - * - decoding: unused - */ - int noise_reduction; - -#if FF_API_MPV_OPT - /** - * @deprecated this field is unused - */ - attribute_deprecated - int me_threshold; - - /** - * @deprecated this field is unused - */ - attribute_deprecated - int mb_threshold; -#endif - - /** - * precision of the intra DC coefficient - 8 - * - encoding: Set by user. - * - decoding: Set by libavcodec - */ - int intra_dc_precision; - - /** - * Number of macroblock rows at the top which are skipped. - * - encoding: unused - * - decoding: Set by user. - */ - int skip_top; - - /** - * Number of macroblock rows at the bottom which are skipped. - * - encoding: unused - * - decoding: Set by user. - */ - int skip_bottom; - -#if FF_API_MPV_OPT - /** - * @deprecated use encoder private options instead - */ - attribute_deprecated - float border_masking; -#endif - - /** - * minimum MB lagrange multipler - * - encoding: Set by user. - * - decoding: unused - */ - int mb_lmin; - - /** - * maximum MB lagrange multipler - * - encoding: Set by user. - * - decoding: unused - */ - int mb_lmax; - - /** - * - * - encoding: Set by user. - * - decoding: unused - */ - int me_penalty_compensation; - - /** - * - * - encoding: Set by user. - * - decoding: unused - */ - int bidir_refine; - - /** - * - * - encoding: Set by user. - * - decoding: unused - */ - int brd_scale; - - /** - * minimum GOP size - * - encoding: Set by user. - * - decoding: unused - */ - int keyint_min; - - /** - * number of reference frames - * - encoding: Set by user. - * - decoding: Set by lavc. - */ - int refs; - - /** - * chroma qp offset from luma - * - encoding: Set by user. - * - decoding: unused - */ - int chromaoffset; - -#if FF_API_UNUSED_MEMBERS - /** - * Multiplied by qscale for each frame and added to scene_change_score. - * - encoding: Set by user. - * - decoding: unused - */ - attribute_deprecated int scenechange_factor; -#endif - - /** - * - * Note: Value depends upon the compare function used for fullpel ME. - * - encoding: Set by user. - * - decoding: unused - */ - int mv0_threshold; - - /** - * Adjust sensitivity of b_frame_strategy 1. - * - encoding: Set by user. - * - decoding: unused - */ - int b_sensitivity; - - /** - * Chromaticity coordinates of the source primaries. - * - encoding: Set by user - * - decoding: Set by libavcodec - */ - enum AVColorPrimaries color_primaries; - - /** - * Color Transfer Characteristic. - * - encoding: Set by user - * - decoding: Set by libavcodec - */ - enum AVColorTransferCharacteristic color_trc; - - /** - * YUV colorspace type. - * - encoding: Set by user - * - decoding: Set by libavcodec - */ - enum AVColorSpace colorspace; - - /** - * MPEG vs JPEG YUV range. - * - encoding: Set by user - * - decoding: Set by libavcodec - */ - enum AVColorRange color_range; - - /** - * This defines the location of chroma samples. - * - encoding: Set by user - * - decoding: Set by libavcodec - */ - enum AVChromaLocation chroma_sample_location; - - /** - * Number of slices. - * Indicates number of picture subdivisions. Used for parallelized - * decoding. - * - encoding: Set by user - * - decoding: unused - */ - int slices; - - /** Field order - * - encoding: set by libavcodec - * - decoding: Set by user. - */ - enum AVFieldOrder field_order; - - /* audio only */ - int sample_rate; ///< samples per second - int channels; ///< number of audio channels - - /** - * audio sample format - * - encoding: Set by user. - * - decoding: Set by libavcodec. - */ - enum AVSampleFormat sample_fmt; ///< sample format - - /* The following data should not be initialized. */ - /** - * Number of samples per channel in an audio frame. - * - * - encoding: set by libavcodec in avcodec_open2(). Each submitted frame - * except the last must contain exactly frame_size samples per channel. - * May be 0 when the codec has AV_CODEC_CAP_VARIABLE_FRAME_SIZE set, then the - * frame size is not restricted. - * - decoding: may be set by some decoders to indicate constant frame size - */ - int frame_size; - - /** - * Frame counter, set by libavcodec. - * - * - decoding: total number of frames returned from the decoder so far. - * - encoding: total number of frames passed to the encoder so far. - * - * @note the counter is not incremented if encoding/decoding resulted in - * an error. - */ - int frame_number; - - /** - * number of bytes per packet if constant and known or 0 - * Used by some WAV based audio codecs. - */ - int block_align; - - /** - * Audio cutoff bandwidth (0 means "automatic") - * - encoding: Set by user. - * - decoding: unused - */ - int cutoff; - - /** - * Audio channel layout. - * - encoding: set by user. - * - decoding: set by user, may be overwritten by libavcodec. - */ - uint64_t channel_layout; - - /** - * Request decoder to use this channel layout if it can (0 for default) - * - encoding: unused - * - decoding: Set by user. - */ - uint64_t request_channel_layout; - - /** - * Type of service that the audio stream conveys. - * - encoding: Set by user. - * - decoding: Set by libavcodec. - */ - enum AVAudioServiceType audio_service_type; - - /** - * desired sample format - * - encoding: Not used. - * - decoding: Set by user. - * Decoder will decode to this format if it can. - */ - enum AVSampleFormat request_sample_fmt; - - /** - * This callback is called at the beginning of each frame to get data - * buffer(s) for it. There may be one contiguous buffer for all the data or - * there may be a buffer per each data plane or anything in between. What - * this means is, you may set however many entries in buf[] you feel necessary. - * Each buffer must be reference-counted using the AVBuffer API (see description - * of buf[] below). - * - * The following fields will be set in the frame before this callback is - * called: - * - format - * - width, height (video only) - * - sample_rate, channel_layout, nb_samples (audio only) - * Their values may differ from the corresponding values in - * AVCodecContext. This callback must use the frame values, not the codec - * context values, to calculate the required buffer size. - * - * This callback must fill the following fields in the frame: - * - data[] - * - linesize[] - * - extended_data: - * * if the data is planar audio with more than 8 channels, then this - * callback must allocate and fill extended_data to contain all pointers - * to all data planes. data[] must hold as many pointers as it can. - * extended_data must be allocated with av_malloc() and will be freed in - * av_frame_unref(). - * * otherwise exended_data must point to data - * - buf[] must contain one or more pointers to AVBufferRef structures. Each of - * the frame's data and extended_data pointers must be contained in these. That - * is, one AVBufferRef for each allocated chunk of memory, not necessarily one - * AVBufferRef per data[] entry. See: av_buffer_create(), av_buffer_alloc(), - * and av_buffer_ref(). - * - extended_buf and nb_extended_buf must be allocated with av_malloc() by - * this callback and filled with the extra buffers if there are more - * buffers than buf[] can hold. extended_buf will be freed in - * av_frame_unref(). - * - * If AV_CODEC_CAP_DR1 is not set then get_buffer2() must call - * avcodec_default_get_buffer2() instead of providing buffers allocated by - * some other means. - * - * Each data plane must be aligned to the maximum required by the target - * CPU. - * - * @see avcodec_default_get_buffer2() - * - * Video: - * - * If AV_GET_BUFFER_FLAG_REF is set in flags then the frame may be reused - * (read and/or written to if it is writable) later by libavcodec. - * - * avcodec_align_dimensions2() should be used to find the required width and - * height, as they normally need to be rounded up to the next multiple of 16. - * - * Some decoders do not support linesizes changing between frames. - * - * If frame multithreading is used and thread_safe_callbacks is set, - * this callback may be called from a different thread, but not from more - * than one at once. Does not need to be reentrant. - * - * @see avcodec_align_dimensions2() - * - * Audio: - * - * Decoders request a buffer of a particular size by setting - * AVFrame.nb_samples prior to calling get_buffer2(). The decoder may, - * however, utilize only part of the buffer by setting AVFrame.nb_samples - * to a smaller value in the output frame. - * - * As a convenience, av_samples_get_buffer_size() and - * av_samples_fill_arrays() in libavutil may be used by custom get_buffer2() - * functions to find the required data size and to fill data pointers and - * linesize. In AVFrame.linesize, only linesize[0] may be set for audio - * since all planes must be the same size. - * - * @see av_samples_get_buffer_size(), av_samples_fill_arrays() - * - * - encoding: unused - * - decoding: Set by libavcodec, user can override. - */ - int (*get_buffer2)(struct AVCodecContext *s, AVFrame *frame, int flags); - - /** - * If non-zero, the decoded audio and video frames returned from - * avcodec_decode_video2() and avcodec_decode_audio4() are reference-counted - * and are valid indefinitely. The caller must free them with - * av_frame_unref() when they are not needed anymore. - * Otherwise, the decoded frames must not be freed by the caller and are - * only valid until the next decode call. - * - * - encoding: unused - * - decoding: set by the caller before avcodec_open2(). - */ - int refcounted_frames; - - /* - encoding parameters */ - float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0) - float qblur; ///< amount of qscale smoothing over time (0.0-1.0) - - /** - * minimum quantizer - * - encoding: Set by user. - * - decoding: unused - */ - int qmin; - - /** - * maximum quantizer - * - encoding: Set by user. - * - decoding: unused - */ - int qmax; - - /** - * maximum quantizer difference between frames - * - encoding: Set by user. - * - decoding: unused - */ - int max_qdiff; - -#if FF_API_MPV_OPT - /** - * @deprecated use encoder private options instead - */ - attribute_deprecated - float rc_qsquish; - - attribute_deprecated - float rc_qmod_amp; - attribute_deprecated - int rc_qmod_freq; -#endif - - /** - * decoder bitstream buffer size - * - encoding: Set by user. - * - decoding: unused - */ - int rc_buffer_size; - - /** - * ratecontrol override, see RcOverride - * - encoding: Allocated/set/freed by user. - * - decoding: unused - */ - int rc_override_count; - RcOverride *rc_override; - -#if FF_API_MPV_OPT - /** - * @deprecated use encoder private options instead - */ - attribute_deprecated - const char *rc_eq; -#endif - - /** - * maximum bitrate - * - encoding: Set by user. - * - decoding: Set by user, may be overwritten by libavcodec. - */ - int64_t rc_max_rate; - - /** - * minimum bitrate - * - encoding: Set by user. - * - decoding: unused - */ - int64_t rc_min_rate; - -#if FF_API_MPV_OPT - /** - * @deprecated use encoder private options instead - */ - attribute_deprecated - float rc_buffer_aggressivity; - - attribute_deprecated - float rc_initial_cplx; -#endif - - /** - * Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow. - * - encoding: Set by user. - * - decoding: unused. - */ - float rc_max_available_vbv_use; - - /** - * Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow. - * - encoding: Set by user. - * - decoding: unused. - */ - float rc_min_vbv_overflow_use; - - /** - * Number of bits which should be loaded into the rc buffer before decoding starts. - * - encoding: Set by user. - * - decoding: unused - */ - int rc_initial_buffer_occupancy; - -#if FF_API_CODER_TYPE -#define FF_CODER_TYPE_VLC 0 -#define FF_CODER_TYPE_AC 1 -#define FF_CODER_TYPE_RAW 2 -#define FF_CODER_TYPE_RLE 3 -#if FF_API_UNUSED_MEMBERS -#define FF_CODER_TYPE_DEFLATE 4 -#endif /* FF_API_UNUSED_MEMBERS */ - /** - * @deprecated use encoder private options instead - */ - attribute_deprecated - int coder_type; -#endif /* FF_API_CODER_TYPE */ - - /** - * context model - * - encoding: Set by user. - * - decoding: unused - */ - int context_model; - -#if FF_API_MPV_OPT - /** - * @deprecated use encoder private options instead - */ - attribute_deprecated - int lmin; - - /** - * @deprecated use encoder private options instead - */ - attribute_deprecated - int lmax; -#endif - - /** - * frame skip threshold - * - encoding: Set by user. - * - decoding: unused - */ - int frame_skip_threshold; - - /** - * frame skip factor - * - encoding: Set by user. - * - decoding: unused - */ - int frame_skip_factor; - - /** - * frame skip exponent - * - encoding: Set by user. - * - decoding: unused - */ - int frame_skip_exp; - - /** - * frame skip comparison function - * - encoding: Set by user. - * - decoding: unused - */ - int frame_skip_cmp; - - /** - * trellis RD quantization - * - encoding: Set by user. - * - decoding: unused - */ - int trellis; - - /** - * - encoding: Set by user. - * - decoding: unused - */ - int min_prediction_order; - - /** - * - encoding: Set by user. - * - decoding: unused - */ - int max_prediction_order; - - /** - * GOP timecode frame start number - * - encoding: Set by user, in non drop frame format - * - decoding: Set by libavcodec (timecode in the 25 bits format, -1 if unset) - */ - int64_t timecode_frame_start; - -#if FF_API_RTP_CALLBACK - /** - * @deprecated unused - */ - /* The RTP callback: This function is called */ - /* every time the encoder has a packet to send. */ - /* It depends on the encoder if the data starts */ - /* with a Start Code (it should). H.263 does. */ - /* mb_nb contains the number of macroblocks */ - /* encoded in the RTP payload. */ - attribute_deprecated - void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb); -#endif - - int rtp_payload_size; /* The size of the RTP payload: the coder will */ - /* do its best to deliver a chunk with size */ - /* below rtp_payload_size, the chunk will start */ - /* with a start code on some codecs like H.263. */ - /* This doesn't take account of any particular */ - /* headers inside the transmitted RTP payload. */ - -#if FF_API_STAT_BITS - /* statistics, used for 2-pass encoding */ - attribute_deprecated - int mv_bits; - attribute_deprecated - int header_bits; - attribute_deprecated - int i_tex_bits; - attribute_deprecated - int p_tex_bits; - attribute_deprecated - int i_count; - attribute_deprecated - int p_count; - attribute_deprecated - int skip_count; - attribute_deprecated - int misc_bits; - - /** @deprecated this field is unused */ - attribute_deprecated - int frame_bits; -#endif - - /** - * pass1 encoding statistics output buffer - * - encoding: Set by libavcodec. - * - decoding: unused - */ - char *stats_out; - - /** - * pass2 encoding statistics input buffer - * Concatenated stuff from stats_out of pass1 should be placed here. - * - encoding: Allocated/set/freed by user. - * - decoding: unused - */ - char *stats_in; - - /** - * Work around bugs in encoders which sometimes cannot be detected automatically. - * - encoding: Set by user - * - decoding: Set by user - */ - int workaround_bugs; -#define FF_BUG_AUTODETECT 1 ///< autodetection -#if FF_API_OLD_MSMPEG4 -#define FF_BUG_OLD_MSMPEG4 2 -#endif -#define FF_BUG_XVID_ILACE 4 -#define FF_BUG_UMP4 8 -#define FF_BUG_NO_PADDING 16 -#define FF_BUG_AMV 32 -#if FF_API_AC_VLC -#define FF_BUG_AC_VLC 0 ///< Will be removed, libavcodec can now handle these non-compliant files by default. -#endif -#define FF_BUG_QPEL_CHROMA 64 -#define FF_BUG_STD_QPEL 128 -#define FF_BUG_QPEL_CHROMA2 256 -#define FF_BUG_DIRECT_BLOCKSIZE 512 -#define FF_BUG_EDGE 1024 -#define FF_BUG_HPEL_CHROMA 2048 -#define FF_BUG_DC_CLIP 4096 -#define FF_BUG_MS 8192 ///< Work around various bugs in Microsoft's broken decoders. -#define FF_BUG_TRUNCATED 16384 - - /** - * strictly follow the standard (MPEG4, ...). - * - encoding: Set by user. - * - decoding: Set by user. - * Setting this to STRICT or higher means the encoder and decoder will - * generally do stupid things, whereas setting it to unofficial or lower - * will mean the encoder might produce output that is not supported by all - * spec-compliant decoders. Decoders don't differentiate between normal, - * unofficial and experimental (that is, they always try to decode things - * when they can) unless they are explicitly asked to behave stupidly - * (=strictly conform to the specs) - */ - int strict_std_compliance; -#define FF_COMPLIANCE_VERY_STRICT 2 ///< Strictly conform to an older more strict version of the spec or reference software. -#define FF_COMPLIANCE_STRICT 1 ///< Strictly conform to all the things in the spec no matter what consequences. -#define FF_COMPLIANCE_NORMAL 0 -#define FF_COMPLIANCE_UNOFFICIAL -1 ///< Allow unofficial extensions -#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things. - - /** - * error concealment flags - * - encoding: unused - * - decoding: Set by user. - */ - int error_concealment; -#define FF_EC_GUESS_MVS 1 -#define FF_EC_DEBLOCK 2 -#define FF_EC_FAVOR_INTER 256 - - /** - * debug - * - encoding: Set by user. - * - decoding: Set by user. - */ - int debug; -#define FF_DEBUG_PICT_INFO 1 -#define FF_DEBUG_RC 2 -#define FF_DEBUG_BITSTREAM 4 -#define FF_DEBUG_MB_TYPE 8 -#define FF_DEBUG_QP 16 -#if FF_API_DEBUG_MV -/** - * @deprecated this option does nothing - */ -#define FF_DEBUG_MV 32 -#endif -#define FF_DEBUG_DCT_COEFF 0x00000040 -#define FF_DEBUG_SKIP 0x00000080 -#define FF_DEBUG_STARTCODE 0x00000100 -#if FF_API_UNUSED_MEMBERS -#define FF_DEBUG_PTS 0x00000200 -#endif /* FF_API_UNUSED_MEMBERS */ -#define FF_DEBUG_ER 0x00000400 -#define FF_DEBUG_MMCO 0x00000800 -#define FF_DEBUG_BUGS 0x00001000 -#if FF_API_DEBUG_MV -#define FF_DEBUG_VIS_QP 0x00002000 ///< only access through AVOptions from outside libavcodec -#define FF_DEBUG_VIS_MB_TYPE 0x00004000 ///< only access through AVOptions from outside libavcodec -#endif -#define FF_DEBUG_BUFFERS 0x00008000 -#define FF_DEBUG_THREADS 0x00010000 -#define FF_DEBUG_GREEN_MD 0x00800000 -#define FF_DEBUG_NOMC 0x01000000 - -#if FF_API_DEBUG_MV - /** - * debug - * Code outside libavcodec should access this field using AVOptions - * - encoding: Set by user. - * - decoding: Set by user. - */ - int debug_mv; -#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames -#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames -#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames -#endif - - /** - * Error recognition; may misdetect some more or less valid parts as errors. - * - encoding: unused - * - decoding: Set by user. - */ - int err_recognition; - -/** - * Verify checksums embedded in the bitstream (could be of either encoded or - * decoded data, depending on the codec) and print an error message on mismatch. - * If AV_EF_EXPLODE is also set, a mismatching checksum will result in the - * decoder returning an error. - */ -#define AV_EF_CRCCHECK (1<<0) -#define AV_EF_BITSTREAM (1<<1) ///< detect bitstream specification deviations -#define AV_EF_BUFFER (1<<2) ///< detect improper bitstream length -#define AV_EF_EXPLODE (1<<3) ///< abort decoding on minor error detection - -#define AV_EF_IGNORE_ERR (1<<15) ///< ignore errors and continue -#define AV_EF_CAREFUL (1<<16) ///< consider things that violate the spec, are fast to calculate and have not been seen in the wild as errors -#define AV_EF_COMPLIANT (1<<17) ///< consider all spec non compliances as errors -#define AV_EF_AGGRESSIVE (1<<18) ///< consider things that a sane encoder should not do as an error - - - /** - * opaque 64bit number (generally a PTS) that will be reordered and - * output in AVFrame.reordered_opaque - * - encoding: unused - * - decoding: Set by user. - */ - int64_t reordered_opaque; - - /** - * Hardware accelerator in use - * - encoding: unused. - * - decoding: Set by libavcodec - */ - struct AVHWAccel *hwaccel; - - /** - * Hardware accelerator context. - * For some hardware accelerators, a global context needs to be - * provided by the user. In that case, this holds display-dependent - * data FFmpeg cannot instantiate itself. Please refer to the - * FFmpeg HW accelerator documentation to know how to fill this - * is. e.g. for VA API, this is a struct vaapi_context. - * - encoding: unused - * - decoding: Set by user - */ - void *hwaccel_context; - - /** - * error - * - encoding: Set by libavcodec if flags & AV_CODEC_FLAG_PSNR. - * - decoding: unused - */ - uint64_t error[AV_NUM_DATA_POINTERS]; - - /** - * DCT algorithm, see FF_DCT_* below - * - encoding: Set by user. - * - decoding: unused - */ - int dct_algo; -#define FF_DCT_AUTO 0 -#define FF_DCT_FASTINT 1 -#define FF_DCT_INT 2 -#define FF_DCT_MMX 3 -#define FF_DCT_ALTIVEC 5 -#define FF_DCT_FAAN 6 - - /** - * IDCT algorithm, see FF_IDCT_* below. - * - encoding: Set by user. - * - decoding: Set by user. - */ - int idct_algo; -#define FF_IDCT_AUTO 0 -#define FF_IDCT_INT 1 -#define FF_IDCT_SIMPLE 2 -#define FF_IDCT_SIMPLEMMX 3 -#define FF_IDCT_ARM 7 -#define FF_IDCT_ALTIVEC 8 -#if FF_API_ARCH_SH4 -#define FF_IDCT_SH4 9 -#endif -#define FF_IDCT_SIMPLEARM 10 -#if FF_API_UNUSED_MEMBERS -#define FF_IDCT_IPP 13 -#endif /* FF_API_UNUSED_MEMBERS */ -#define FF_IDCT_XVID 14 -#if FF_API_IDCT_XVIDMMX -#define FF_IDCT_XVIDMMX 14 -#endif /* FF_API_IDCT_XVIDMMX */ -#define FF_IDCT_SIMPLEARMV5TE 16 -#define FF_IDCT_SIMPLEARMV6 17 -#if FF_API_ARCH_SPARC -#define FF_IDCT_SIMPLEVIS 18 -#endif -#define FF_IDCT_FAAN 20 -#define FF_IDCT_SIMPLENEON 22 -#if FF_API_ARCH_ALPHA -#define FF_IDCT_SIMPLEALPHA 23 -#endif -#define FF_IDCT_SIMPLEAUTO 128 - - /** - * bits per sample/pixel from the demuxer (needed for huffyuv). - * - encoding: Set by libavcodec. - * - decoding: Set by user. - */ - int bits_per_coded_sample; - - /** - * Bits per sample/pixel of internal libavcodec pixel/sample format. - * - encoding: set by user. - * - decoding: set by libavcodec. - */ - int bits_per_raw_sample; - -#if FF_API_LOWRES - /** - * low resolution decoding, 1-> 1/2 size, 2->1/4 size - * - encoding: unused - * - decoding: Set by user. - * Code outside libavcodec should access this field using: - * av_codec_{get,set}_lowres(avctx) - */ - int lowres; -#endif - -#if FF_API_CODED_FRAME - /** - * the picture in the bitstream - * - encoding: Set by libavcodec. - * - decoding: unused - * - * @deprecated use the quality factor packet side data instead - */ - attribute_deprecated AVFrame *coded_frame; -#endif - - /** - * thread count - * is used to decide how many independent tasks should be passed to execute() - * - encoding: Set by user. - * - decoding: Set by user. - */ - int thread_count; - - /** - * Which multithreading methods to use. - * Use of FF_THREAD_FRAME will increase decoding delay by one frame per thread, - * so clients which cannot provide future frames should not use it. - * - * - encoding: Set by user, otherwise the default is used. - * - decoding: Set by user, otherwise the default is used. - */ - int thread_type; -#define FF_THREAD_FRAME 1 ///< Decode more than one frame at once -#define FF_THREAD_SLICE 2 ///< Decode more than one part of a single frame at once - - /** - * Which multithreading methods are in use by the codec. - * - encoding: Set by libavcodec. - * - decoding: Set by libavcodec. - */ - int active_thread_type; - - /** - * Set by the client if its custom get_buffer() callback can be called - * synchronously from another thread, which allows faster multithreaded decoding. - * draw_horiz_band() will be called from other threads regardless of this setting. - * Ignored if the default get_buffer() is used. - * - encoding: Set by user. - * - decoding: Set by user. - */ - int thread_safe_callbacks; - - /** - * The codec may call this to execute several independent things. - * It will return only after finishing all tasks. - * The user may replace this with some multithreaded implementation, - * the default implementation will execute the parts serially. - * @param count the number of things to execute - * - encoding: Set by libavcodec, user can override. - * - decoding: Set by libavcodec, user can override. - */ - int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size); - - /** - * The codec may call this to execute several independent things. - * It will return only after finishing all tasks. - * The user may replace this with some multithreaded implementation, - * the default implementation will execute the parts serially. - * Also see avcodec_thread_init and e.g. the --enable-pthread configure option. - * @param c context passed also to func - * @param count the number of things to execute - * @param arg2 argument passed unchanged to func - * @param ret return values of executed functions, must have space for "count" values. May be NULL. - * @param func function that will be called count times, with jobnr from 0 to count-1. - * threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no - * two instances of func executing at the same time will have the same threadnr. - * @return always 0 currently, but code should handle a future improvement where when any call to func - * returns < 0 no further calls to func may be done and < 0 is returned. - * - encoding: Set by libavcodec, user can override. - * - decoding: Set by libavcodec, user can override. - */ - int (*execute2)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count); - - /** - * noise vs. sse weight for the nsse comparison function - * - encoding: Set by user. - * - decoding: unused - */ - int nsse_weight; - - /** - * profile - * - encoding: Set by user. - * - decoding: Set by libavcodec. - */ - int profile; -#define FF_PROFILE_UNKNOWN -99 -#define FF_PROFILE_RESERVED -100 - -#define FF_PROFILE_AAC_MAIN 0 -#define FF_PROFILE_AAC_LOW 1 -#define FF_PROFILE_AAC_SSR 2 -#define FF_PROFILE_AAC_LTP 3 -#define FF_PROFILE_AAC_HE 4 -#define FF_PROFILE_AAC_HE_V2 28 -#define FF_PROFILE_AAC_LD 22 -#define FF_PROFILE_AAC_ELD 38 -#define FF_PROFILE_MPEG2_AAC_LOW 128 -#define FF_PROFILE_MPEG2_AAC_HE 131 - -#define FF_PROFILE_DTS 20 -#define FF_PROFILE_DTS_ES 30 -#define FF_PROFILE_DTS_96_24 40 -#define FF_PROFILE_DTS_HD_HRA 50 -#define FF_PROFILE_DTS_HD_MA 60 -#define FF_PROFILE_DTS_EXPRESS 70 - -#define FF_PROFILE_MPEG2_422 0 -#define FF_PROFILE_MPEG2_HIGH 1 -#define FF_PROFILE_MPEG2_SS 2 -#define FF_PROFILE_MPEG2_SNR_SCALABLE 3 -#define FF_PROFILE_MPEG2_MAIN 4 -#define FF_PROFILE_MPEG2_SIMPLE 5 - -#define FF_PROFILE_H264_CONSTRAINED (1<<9) // 8+1; constraint_set1_flag -#define FF_PROFILE_H264_INTRA (1<<11) // 8+3; constraint_set3_flag - -#define FF_PROFILE_H264_BASELINE 66 -#define FF_PROFILE_H264_CONSTRAINED_BASELINE (66|FF_PROFILE_H264_CONSTRAINED) -#define FF_PROFILE_H264_MAIN 77 -#define FF_PROFILE_H264_EXTENDED 88 -#define FF_PROFILE_H264_HIGH 100 -#define FF_PROFILE_H264_HIGH_10 110 -#define FF_PROFILE_H264_HIGH_10_INTRA (110|FF_PROFILE_H264_INTRA) -#define FF_PROFILE_H264_HIGH_422 122 -#define FF_PROFILE_H264_HIGH_422_INTRA (122|FF_PROFILE_H264_INTRA) -#define FF_PROFILE_H264_HIGH_444 144 -#define FF_PROFILE_H264_HIGH_444_PREDICTIVE 244 -#define FF_PROFILE_H264_HIGH_444_INTRA (244|FF_PROFILE_H264_INTRA) -#define FF_PROFILE_H264_CAVLC_444 44 - -#define FF_PROFILE_VC1_SIMPLE 0 -#define FF_PROFILE_VC1_MAIN 1 -#define FF_PROFILE_VC1_COMPLEX 2 -#define FF_PROFILE_VC1_ADVANCED 3 - -#define FF_PROFILE_MPEG4_SIMPLE 0 -#define FF_PROFILE_MPEG4_SIMPLE_SCALABLE 1 -#define FF_PROFILE_MPEG4_CORE 2 -#define FF_PROFILE_MPEG4_MAIN 3 -#define FF_PROFILE_MPEG4_N_BIT 4 -#define FF_PROFILE_MPEG4_SCALABLE_TEXTURE 5 -#define FF_PROFILE_MPEG4_SIMPLE_FACE_ANIMATION 6 -#define FF_PROFILE_MPEG4_BASIC_ANIMATED_TEXTURE 7 -#define FF_PROFILE_MPEG4_HYBRID 8 -#define FF_PROFILE_MPEG4_ADVANCED_REAL_TIME 9 -#define FF_PROFILE_MPEG4_CORE_SCALABLE 10 -#define FF_PROFILE_MPEG4_ADVANCED_CODING 11 -#define FF_PROFILE_MPEG4_ADVANCED_CORE 12 -#define FF_PROFILE_MPEG4_ADVANCED_SCALABLE_TEXTURE 13 -#define FF_PROFILE_MPEG4_SIMPLE_STUDIO 14 -#define FF_PROFILE_MPEG4_ADVANCED_SIMPLE 15 - -#define FF_PROFILE_JPEG2000_CSTREAM_RESTRICTION_0 0 -#define FF_PROFILE_JPEG2000_CSTREAM_RESTRICTION_1 1 -#define FF_PROFILE_JPEG2000_CSTREAM_NO_RESTRICTION 2 -#define FF_PROFILE_JPEG2000_DCINEMA_2K 3 -#define FF_PROFILE_JPEG2000_DCINEMA_4K 4 - -#define FF_PROFILE_VP9_0 0 -#define FF_PROFILE_VP9_1 1 -#define FF_PROFILE_VP9_2 2 -#define FF_PROFILE_VP9_3 3 - -#define FF_PROFILE_HEVC_MAIN 1 -#define FF_PROFILE_HEVC_MAIN_10 2 -#define FF_PROFILE_HEVC_MAIN_STILL_PICTURE 3 -#define FF_PROFILE_HEVC_REXT 4 - - /** - * level - * - encoding: Set by user. - * - decoding: Set by libavcodec. - */ - int level; -#define FF_LEVEL_UNKNOWN -99 - - /** - * Skip loop filtering for selected frames. - * - encoding: unused - * - decoding: Set by user. - */ - enum AVDiscard skip_loop_filter; - - /** - * Skip IDCT/dequantization for selected frames. - * - encoding: unused - * - decoding: Set by user. - */ - enum AVDiscard skip_idct; - - /** - * Skip decoding for selected frames. - * - encoding: unused - * - decoding: Set by user. - */ - enum AVDiscard skip_frame; - - /** - * Header containing style information for text subtitles. - * For SUBTITLE_ASS subtitle type, it should contain the whole ASS - * [Script Info] and [V4+ Styles] section, plus the [Events] line and - * the Format line following. It shouldn't include any Dialogue line. - * - encoding: Set/allocated/freed by user (before avcodec_open2()) - * - decoding: Set/allocated/freed by libavcodec (by avcodec_open2()) - */ - uint8_t *subtitle_header; - int subtitle_header_size; - -#if FF_API_ERROR_RATE - /** - * @deprecated use the 'error_rate' private AVOption of the mpegvideo - * encoders - */ - attribute_deprecated - int error_rate; -#endif - -#if FF_API_VBV_DELAY - /** - * VBV delay coded in the last frame (in periods of a 27 MHz clock). - * Used for compliant TS muxing. - * - encoding: Set by libavcodec. - * - decoding: unused. - * @deprecated this value is now exported as a part of - * AV_PKT_DATA_CPB_PROPERTIES packet side data - */ - attribute_deprecated - uint64_t vbv_delay; -#endif - -#if FF_API_SIDEDATA_ONLY_PKT - /** - * Encoding only and set by default. Allow encoders to output packets - * that do not contain any encoded data, only side data. - * - * Some encoders need to output such packets, e.g. to update some stream - * parameters at the end of encoding. - * - * @deprecated this field disables the default behaviour and - * it is kept only for compatibility. - */ - attribute_deprecated - int side_data_only_packets; -#endif - - /** - * Audio only. The number of "priming" samples (padding) inserted by the - * encoder at the beginning of the audio. I.e. this number of leading - * decoded samples must be discarded by the caller to get the original audio - * without leading padding. - * - * - decoding: unused - * - encoding: Set by libavcodec. The timestamps on the output packets are - * adjusted by the encoder so that they always refer to the - * first sample of the data actually contained in the packet, - * including any added padding. E.g. if the timebase is - * 1/samplerate and the timestamp of the first input sample is - * 0, the timestamp of the first output packet will be - * -initial_padding. - */ - int initial_padding; - - /** - * - decoding: For codecs that store a framerate value in the compressed - * bitstream, the decoder may export it here. { 0, 1} when - * unknown. - * - encoding: unused - */ - AVRational framerate; - - /** - * Nominal unaccelerated pixel format, see AV_PIX_FMT_xxx. - * - encoding: unused. - * - decoding: Set by libavcodec before calling get_format() - */ - enum AVPixelFormat sw_pix_fmt; - - /** - * Timebase in which pkt_dts/pts and AVPacket.dts/pts are. - * Code outside libavcodec should access this field using: - * av_codec_{get,set}_pkt_timebase(avctx) - * - encoding unused. - * - decoding set by user. - */ - AVRational pkt_timebase; - - /** - * AVCodecDescriptor - * Code outside libavcodec should access this field using: - * av_codec_{get,set}_codec_descriptor(avctx) - * - encoding: unused. - * - decoding: set by libavcodec. - */ - const AVCodecDescriptor *codec_descriptor; - -#if !FF_API_LOWRES - /** - * low resolution decoding, 1-> 1/2 size, 2->1/4 size - * - encoding: unused - * - decoding: Set by user. - * Code outside libavcodec should access this field using: - * av_codec_{get,set}_lowres(avctx) - */ - int lowres; -#endif - - /** - * Current statistics for PTS correction. - * - decoding: maintained and used by libavcodec, not intended to be used by user apps - * - encoding: unused - */ - int64_t pts_correction_num_faulty_pts; /// Number of incorrect PTS values so far - int64_t pts_correction_num_faulty_dts; /// Number of incorrect DTS values so far - int64_t pts_correction_last_pts; /// PTS of the last frame - int64_t pts_correction_last_dts; /// DTS of the last frame - - /** - * Character encoding of the input subtitles file. - * - decoding: set by user - * - encoding: unused - */ - char *sub_charenc; - - /** - * Subtitles character encoding mode. Formats or codecs might be adjusting - * this setting (if they are doing the conversion themselves for instance). - * - decoding: set by libavcodec - * - encoding: unused - */ - int sub_charenc_mode; -#define FF_SUB_CHARENC_MODE_DO_NOTHING -1 ///< do nothing (demuxer outputs a stream supposed to be already in UTF-8, or the codec is bitmap for instance) -#define FF_SUB_CHARENC_MODE_AUTOMATIC 0 ///< libavcodec will select the mode itself -#define FF_SUB_CHARENC_MODE_PRE_DECODER 1 ///< the AVPacket data needs to be recoded to UTF-8 before being fed to the decoder, requires iconv - - /** - * Skip processing alpha if supported by codec. - * Note that if the format uses pre-multiplied alpha (common with VP6, - * and recommended due to better video quality/compression) - * the image will look as if alpha-blended onto a black background. - * However for formats that do not use pre-multiplied alpha - * there might be serious artefacts (though e.g. libswscale currently - * assumes pre-multiplied alpha anyway). - * Code outside libavcodec should access this field using AVOptions - * - * - decoding: set by user - * - encoding: unused - */ - int skip_alpha; - - /** - * Number of samples to skip after a discontinuity - * - decoding: unused - * - encoding: set by libavcodec - */ - int seek_preroll; - -#if !FF_API_DEBUG_MV - /** - * debug motion vectors - * Code outside libavcodec should access this field using AVOptions - * - encoding: Set by user. - * - decoding: Set by user. - */ - int debug_mv; -#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames -#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames -#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames -#endif - - /** - * custom intra quantization matrix - * Code outside libavcodec should access this field using av_codec_g/set_chroma_intra_matrix() - * - encoding: Set by user, can be NULL. - * - decoding: unused. - */ - uint16_t *chroma_intra_matrix; - - /** - * dump format separator. - * can be ", " or "\n " or anything else - * Code outside libavcodec should access this field using AVOptions - * (NO direct access). - * - encoding: Set by user. - * - decoding: Set by user. - */ - uint8_t *dump_separator; - - /** - * ',' separated list of allowed decoders. - * If NULL then all are allowed - * - encoding: unused - * - decoding: set by user through AVOPtions (NO direct access) - */ - char *codec_whitelist; - - /* - * Properties of the stream that gets decoded - * To be accessed through av_codec_get_properties() (NO direct access) - * - encoding: unused - * - decoding: set by libavcodec - */ - unsigned properties; -#define FF_CODEC_PROPERTY_LOSSLESS 0x00000001 -#define FF_CODEC_PROPERTY_CLOSED_CAPTIONS 0x00000002 - - /** - * Additional data associated with the entire coded stream. - * - * - decoding: unused - * - encoding: may be set by libavcodec after avcodec_open2(). - */ - AVPacketSideData *coded_side_data; - int nb_coded_side_data; - -} AVCodecContext; - -AVRational av_codec_get_pkt_timebase (const AVCodecContext *avctx); -void av_codec_set_pkt_timebase (AVCodecContext *avctx, AVRational val); - -const AVCodecDescriptor *av_codec_get_codec_descriptor(const AVCodecContext *avctx); -void av_codec_set_codec_descriptor(AVCodecContext *avctx, const AVCodecDescriptor *desc); - -unsigned av_codec_get_codec_properties(const AVCodecContext *avctx); - -int av_codec_get_lowres(const AVCodecContext *avctx); -void av_codec_set_lowres(AVCodecContext *avctx, int val); - -int av_codec_get_seek_preroll(const AVCodecContext *avctx); -void av_codec_set_seek_preroll(AVCodecContext *avctx, int val); - -uint16_t *av_codec_get_chroma_intra_matrix(const AVCodecContext *avctx); -void av_codec_set_chroma_intra_matrix(AVCodecContext *avctx, uint16_t *val); - -/** - * AVProfile. - */ -typedef struct AVProfile { - int profile; - const char *name; ///< short name for the profile -} AVProfile; - -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, no direct access, use av_codec_get_max_lowres() - 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} - - /***************************************************************** - * 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(). - */ - 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 *); - /** - * Flush buffers. - * Will be called when seeking - */ - void (*flush)(AVCodecContext *); - /** - * Internal codec capabilities. - * See FF_CODEC_CAP_* in internal.h - */ - int caps_internal; -} AVCodec; - -int av_codec_get_max_lowres(const AVCodec *codec); - -struct MpegEncContext; - -/** - * @defgroup lavc_hwaccel AVHWAccel - * @{ - */ -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. - */ - enum AVPixelFormat pix_fmt; - - /** - * Hardware accelerated codec capabilities. - * see HWACCEL_CODEC_CAP_* - */ - int capabilities; - - /***************************************************************** - * 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. - ***************************************************************** - */ - struct AVHWAccel *next; - - /** - * Allocate a custom buffer - */ - int (*alloc_frame)(AVCodecContext *avctx, AVFrame *frame); - - /** - * Called at the beginning of each frame or field picture. - * - * Meaningful frame information (codec specific) is guaranteed to - * be parsed at this point. This function is mandatory. - * - * Note that buf can be NULL along with buf_size set to 0. - * Otherwise, this means the whole frame is available at this point. - * - * @param avctx the codec context - * @param buf the frame data buffer base - * @param buf_size the size of the frame in bytes - * @return zero if successful, a negative value otherwise - */ - int (*start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size); - - /** - * Callback for each slice. - * - * Meaningful slice information (codec specific) is guaranteed to - * be parsed at this point. This function is mandatory. - * The only exception is XvMC, that works on MB level. - * - * @param avctx the codec context - * @param buf the slice data buffer base - * @param buf_size the size of the slice in bytes - * @return zero if successful, a negative value otherwise - */ - int (*decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size); - - /** - * Called at the end of each frame or field picture. - * - * The whole picture is parsed at this point and can now be sent - * to the hardware accelerator. This function is mandatory. - * - * @param avctx the codec context - * @return zero if successful, a negative value otherwise - */ - int (*end_frame)(AVCodecContext *avctx); - - /** - * Size of per-frame hardware accelerator private data. - * - * Private data is allocated with av_mallocz() before - * AVCodecContext.get_buffer() and deallocated after - * AVCodecContext.release_buffer(). - */ - int frame_priv_data_size; - - /** - * Called for every Macroblock in a slice. - * - * XvMC uses it to replace the ff_mpv_decode_mb(). - * Instead of decoding to raw picture, MB parameters are - * stored in an array provided by the video driver. - * - * @param s the mpeg context - */ - void (*decode_mb)(struct MpegEncContext *s); - - /** - * Initialize the hwaccel private data. - * - * This will be called from ff_get_format(), after hwaccel and - * hwaccel_context are set and the hwaccel private data in AVCodecInternal - * is allocated. - */ - int (*init)(AVCodecContext *avctx); - - /** - * Uninitialize the hwaccel private data. - * - * This will be called from get_format() or avcodec_close(), after hwaccel - * and hwaccel_context are already uninitialized. - */ - int (*uninit)(AVCodecContext *avctx); - - /** - * Size of the private data to allocate in - * AVCodecInternal.hwaccel_priv_data. - */ - int priv_data_size; -} AVHWAccel; - -/** - * Hardware acceleration should be used for decoding even if the codec level - * used is unknown or higher than the maximum supported level reported by the - * hardware driver. - * - * It's generally a good idea to pass this flag unless you have a specific - * reason not to, as hardware tends to under-report supported levels. - */ -#define AV_HWACCEL_FLAG_IGNORE_LEVEL (1 << 0) - -/** - * Hardware acceleration can output YUV pixel formats with a different chroma - * sampling than 4:2:0 and/or other than 8 bits per component. - */ -#define AV_HWACCEL_FLAG_ALLOW_HIGH_DEPTH (1 << 1) - -/** - * @} - */ - -#if FF_API_AVPICTURE -/** - * @defgroup lavc_picture AVPicture - * - * Functions for working with AVPicture - * @{ - */ - -/** - * Picture data structure. - * - * Up to four components can be stored into it, the last component is - * alpha. - * @deprecated use AVFrame or imgutils functions instead - */ -typedef struct AVPicture { - attribute_deprecated - uint8_t *data[AV_NUM_DATA_POINTERS]; ///< pointers to the image data planes - attribute_deprecated - int linesize[AV_NUM_DATA_POINTERS]; ///< number of bytes per line -} AVPicture; - -/** - * @} - */ -#endif - -enum AVSubtitleType { - SUBTITLE_NONE, - - SUBTITLE_BITMAP, ///< A bitmap, pict will be set - - /** - * Plain text, the text field must be set by the decoder and is - * authoritative. ass and pict fields may contain approximations. - */ - SUBTITLE_TEXT, - - /** - * Formatted text, the ass field must be set by the decoder and is - * authoritative. pict and text fields may contain approximations. - */ - SUBTITLE_ASS, -}; - -#define AV_SUBTITLE_FLAG_FORCED 0x00000001 - -typedef struct AVSubtitleRect { - int x; ///< top left corner of pict, undefined when pict is not set - int y; ///< top left corner of pict, undefined when pict is not set - int w; ///< width of pict, undefined when pict is not set - int h; ///< height of pict, undefined when pict is not set - int nb_colors; ///< number of colors in pict, undefined when pict is not set - -#if FF_API_AVPICTURE - /** - * @deprecated unused - */ - attribute_deprecated - AVPicture pict; -#endif - /** - * data+linesize for the bitmap of this subtitle. - * Can be set for text/ass as well once they are rendered. - */ - uint8_t *data[4]; - int linesize[4]; - - enum AVSubtitleType type; - - char *text; ///< 0 terminated plain UTF-8 text - - /** - * 0 terminated ASS/SSA compatible event line. - * The presentation of this is unaffected by the other values in this - * struct. - */ - char *ass; - - int flags; -} AVSubtitleRect; - -typedef struct AVSubtitle { - uint16_t format; /* 0 = graphics */ - uint32_t start_display_time; /* relative to packet pts, in ms */ - uint32_t end_display_time; /* relative to packet pts, in ms */ - unsigned num_rects; - AVSubtitleRect **rects; - int64_t pts; ///< Same as packet pts, in AV_TIME_BASE -} AVSubtitle; - -/** - * If c is NULL, returns the first registered codec, - * if c is non-NULL, returns the next registered codec after c, - * or NULL if c is the last one. - */ -AVCodec *av_codec_next(const AVCodec *c); - -/** - * Return the LIBAVCODEC_VERSION_INT constant. - */ -unsigned avcodec_version(void); - -/** - * Return the libavcodec build-time configuration. - */ -const char *avcodec_configuration(void); - -/** - * Return the libavcodec license. - */ -const char *avcodec_license(void); - -/** - * Register the codec codec and initialize libavcodec. - * - * @warning either this function or avcodec_register_all() must be called - * before any other libavcodec functions. - * - * @see avcodec_register_all() - */ -void avcodec_register(AVCodec *codec); - -/** - * Register all the codecs, parsers and bitstream filters which were enabled at - * configuration time. If you do not call this function you can select exactly - * which formats you want to support, by using the individual registration - * functions. - * - * @see avcodec_register - * @see av_register_codec_parser - * @see av_register_bitstream_filter - */ -void avcodec_register_all(void); - -/** - * Allocate an AVCodecContext and set its fields to default values. The - * resulting struct should be freed with avcodec_free_context(). - * - * @param codec if non-NULL, allocate private data and initialize defaults - * for the given codec. It is illegal to then call avcodec_open2() - * with a different codec. - * If NULL, then the codec-specific defaults won't be initialized, - * which may result in suboptimal default settings (this is - * important mainly for encoders, e.g. libx264). - * - * @return An AVCodecContext filled with default values or NULL on failure. - * @see avcodec_get_context_defaults - */ -AVCodecContext *avcodec_alloc_context3(const AVCodec *codec); - -/** - * Free the codec context and everything associated with it and write NULL to - * the provided pointer. - */ -void avcodec_free_context(AVCodecContext **avctx); - -/** - * Set the fields of the given AVCodecContext to default values corresponding - * to the given codec (defaults may be codec-dependent). - * - * Do not call this function if a non-NULL codec has been passed - * to avcodec_alloc_context3() that allocated this AVCodecContext. - * If codec is non-NULL, it is illegal to call avcodec_open2() with a - * different codec on this AVCodecContext. - */ -int avcodec_get_context_defaults3(AVCodecContext *s, const AVCodec *codec); - -/** - * Get the AVClass for AVCodecContext. It can be used in combination with - * AV_OPT_SEARCH_FAKE_OBJ for examining options. - * - * @see av_opt_find(). - */ -const AVClass *avcodec_get_class(void); - -/** - * Get the AVClass for AVFrame. It can be used in combination with - * AV_OPT_SEARCH_FAKE_OBJ for examining options. - * - * @see av_opt_find(). - */ -const AVClass *avcodec_get_frame_class(void); - -/** - * 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 - */ -int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src); - -/** - * 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_decode_video2()). - * - * @code - * avcodec_register_all(); - * av_dict_set(&opts, "b", "2.5M", 0); - * codec = avcodec_find_decoder(AV_CODEC_ID_H264); - * if (!codec) - * exit(1); - * - * context = avcodec_alloc_context3(codec); - * - * if (avcodec_open2(context, codec, opts) < 0) - * exit(1); - * @endcode - * - * @param avctx The context to initialize. - * @param codec The codec to open this context for. If a non-NULL codec has been - * previously passed to avcodec_alloc_context3() or - * avcodec_get_context_defaults3() for this context, then this - * parameter MUST be either NULL or equal to the previously passed - * codec. - * @param options A dictionary filled with AVCodecContext and codec-private options. - * On return this object will be filled with options that were not found. - * - * @return zero on success, a negative value on error - * @see avcodec_alloc_context3(), avcodec_find_decoder(), avcodec_find_encoder(), - * av_dict_set(), av_opt_find(). - */ -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() / - * avcodec_get_context_defaults3() with a non-NULL codec. Subsequent calls will - * do nothing. - */ -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(AVPacket *src); - -/** - * Free the packet, if the packet is reference counted, it will be - * unreferenced first. - * - * @param packet 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, - * buf and destruct 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 - */ -attribute_deprecated -int av_dup_packet(AVPacket *pkt); -/** - * Copy packet, including contents - * - * @return 0 on success, negative AVERROR on fail - */ -int av_copy_packet(AVPacket *dst, const AVPacket *src); - -/** - * Copy packet side data - * - * @return 0 on success, negative AVERROR on fail - */ -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(AVPacket *pkt, enum AVPacketSideDataType type, - int *size); - -int av_packet_merge_side_data(AVPacket *pkt); - -int av_packet_split_side_data(AVPacket *pkt); - -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); - - -/** - * Convenience function to free all the side data stored. - * All the other fields stay untouched. - * - * @param pkt packet - */ -void av_packet_free_side_data(AVPacket *pkt); - -/** - * Setup a new reference to the data described by a given packet - * - * If src is reference-counted, setup dst as a new reference to the - * buffer in src. Otherwise allocate a new buffer in dst and copy the - * data from src into it. - * - * All the other fields are copied from src. - * - * @see av_packet_unref - * - * @param dst Destination packet - * @param src Source packet - * - * @return 0 on success, a negative AVERROR on error. - */ -int av_packet_ref(AVPacket *dst, const AVPacket *src); - -/** - * Wipe the packet. - * - * Unreference the buffer referenced by the packet and reset the - * remaining packet fields to their default values. - * - * @param pkt The packet to be unreferenced. - */ -void av_packet_unref(AVPacket *pkt); - -/** - * Move every field in src to dst and reset src. - * - * @see av_packet_unref - * - * @param src Source packet, will be reset - * @param dst Destination packet - */ -void av_packet_move_ref(AVPacket *dst, AVPacket *src); - -/** - * Copy only "properties" fields from src to dst. - * - * Properties for the purpose of this function are all the fields - * beside those related to the packet data (buf, data, size) - * - * @param dst Destination packet - * @param src Source packet - * - * @return 0 on success AVERROR on failure. - * - */ -int av_packet_copy_props(AVPacket *dst, const AVPacket *src); - -/** - * Convert valid timing fields (timestamps / durations) in a packet from one - * timebase to another. Timestamps with unknown values (AV_NOPTS_VALUE) will be - * ignored. - * - * @param pkt packet on which the conversion will be performed - * @param tb_src source timebase, in which the timing fields in pkt are - * expressed - * @param tb_dst destination timebase, to which the timing fields will be - * converted - */ -void av_packet_rescale_ts(AVPacket *pkt, AVRational tb_src, AVRational tb_dst); - -/** - * @} - */ - -/** - * @addtogroup lavc_decoding - * @{ - */ - -/** - * 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 - * AV_CODEC_CAP_DR1 set. - */ -int avcodec_default_get_buffer2(AVCodecContext *s, AVFrame *frame, int flags); - -#if FF_API_EMU_EDGE -/** - * Return the amount of padding in pixels which the get_buffer callback must - * provide around the edge of the image for codecs which do not have the - * CODEC_FLAG_EMU_EDGE flag. - * - * @return Required padding in pixels. - * - * @deprecated CODEC_FLAG_EMU_EDGE is deprecated, so this function is no longer - * needed - */ -attribute_deprecated -unsigned avcodec_get_edge_width(void); -#endif - -/** - * Modify width and height values so that they will result in a memory - * buffer that is acceptable for the codec if you do not use any horizontal - * padding. - * - * May only be used if a codec with AV_CODEC_CAP_DR1 has been opened. - */ -void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height); - -/** - * Modify width and height values so that they will result in a memory - * buffer that is acceptable for the codec if you also ensure that all - * line sizes are a multiple of the respective linesize_align[i]. - * - * May only be used if a codec with AV_CODEC_CAP_DR1 has been opened. - */ -void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, - int linesize_align[AV_NUM_DATA_POINTERS]); - -/** - * Converts AVChromaLocation to swscale x/y chroma position. - * - * The positions represent the chroma (0,0) position in a coordinates system - * with luma (0,0) representing the origin and luma(1,1) representing 256,256 - * - * @param xpos horizontal chroma sample position - * @param ypos vertical chroma sample position - */ -int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos); - -/** - * Converts swscale x/y chroma position to AVChromaLocation. - * - * The positions represent the chroma (0,0) position in a coordinates system - * with luma (0,0) representing the origin and luma(1,1) representing 256,256 - * - * @param xpos horizontal chroma sample position - * @param ypos vertical chroma sample position - */ -enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos); - -/** - * Decode the audio frame of size avpkt->size from avpkt->data into frame. - * - * Some decoders may support multiple frames in a single AVPacket. Such - * decoders would then just decode the first frame and the return value would be - * less than the packet size. In this case, avcodec_decode_audio4 has to be - * called again with an AVPacket containing the remaining data in order to - * decode the second frame, etc... Even if no frames are returned, the packet - * needs to be fed to the decoder with remaining data until it is completely - * consumed or an error occurs. - * - * Some decoders (those marked with AV_CODEC_CAP_DELAY) have a delay between input - * and output. This means that for some packets they will not immediately - * produce decoded output and need to be flushed at the end of decoding to get - * all the decoded data. Flushing is done by calling this function with packets - * with avpkt->data set to NULL and avpkt->size set to 0 until it stops - * returning samples. It is safe to flush even those decoders that are not - * marked with AV_CODEC_CAP_DELAY, then no samples will be returned. - * - * @warning The input buffer, avpkt->data must be AV_INPUT_BUFFER_PADDING_SIZE - * larger than the actual read bytes because some optimized bitstream - * readers read 32 or 64 bits at once and could read over the end. - * - * @note The AVCodecContext MUST have been opened with @ref avcodec_open2() - * before packets may be fed to the decoder. - * - * @param avctx the codec context - * @param[out] frame The AVFrame in which to store decoded audio samples. - * The decoder will allocate a buffer for the decoded frame by - * calling the AVCodecContext.get_buffer2() callback. - * When AVCodecContext.refcounted_frames is set to 1, the frame is - * reference counted and the returned reference belongs to the - * caller. The caller must release the frame using av_frame_unref() - * when the frame is no longer needed. The caller may safely write - * to the frame if av_frame_is_writable() returns 1. - * When AVCodecContext.refcounted_frames is set to 0, the returned - * reference belongs to the decoder and is valid only until the - * next call to this function or until closing or flushing the - * decoder. The caller may not write to it. - * @param[out] got_frame_ptr Zero if no frame could be decoded, otherwise it is - * non-zero. Note that this field being set to zero - * does not mean that an error has occurred. For - * decoders with AV_CODEC_CAP_DELAY set, no given decode - * call is guaranteed to produce a frame. - * @param[in] avpkt The input AVPacket containing the input buffer. - * At least avpkt->data and avpkt->size should be set. Some - * decoders might also require additional fields to be set. - * @return A negative error code is returned if an error occurred during - * decoding, otherwise the number of bytes consumed from the input - * AVPacket is returned. - */ -int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, - int *got_frame_ptr, const AVPacket *avpkt); - -/** - * Decode the video frame of size avpkt->size from avpkt->data into picture. - * Some decoders may support multiple frames in a single AVPacket, such - * decoders would then just decode the first frame. - * - * @warning The input buffer must be AV_INPUT_BUFFER_PADDING_SIZE larger than - * the actual read bytes because some optimized bitstream readers read 32 or 64 - * bits at once and could read over the end. - * - * @warning The end of the input buffer buf should be set to 0 to ensure that - * no overreading happens for damaged MPEG streams. - * - * @note Codecs which have the AV_CODEC_CAP_DELAY capability set have a delay - * between input and output, these need to be fed with avpkt->data=NULL, - * avpkt->size=0 at the end to return the remaining frames. - * - * @note The AVCodecContext MUST have been opened with @ref avcodec_open2() - * before packets may be fed to the decoder. - * - * @param avctx the codec context - * @param[out] picture The AVFrame in which the decoded video frame will be stored. - * Use av_frame_alloc() to get an AVFrame. The codec will - * allocate memory for the actual bitmap by calling the - * AVCodecContext.get_buffer2() callback. - * When AVCodecContext.refcounted_frames is set to 1, the frame is - * reference counted and the returned reference belongs to the - * caller. The caller must release the frame using av_frame_unref() - * when the frame is no longer needed. The caller may safely write - * to the frame if av_frame_is_writable() returns 1. - * When AVCodecContext.refcounted_frames is set to 0, the returned - * reference belongs to the decoder and is valid only until the - * next call to this function or until closing or flushing the - * decoder. The caller may not write to it. - * - * @param[in] avpkt The input AVPacket containing the input buffer. - * You can create such packet with av_init_packet() and by then setting - * data and size, some decoders might in addition need other fields like - * flags&AV_PKT_FLAG_KEY. All decoders are designed to use the least - * fields possible. - * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero. - * @return On error a negative value is returned, otherwise the number of bytes - * used or zero if no frame could be decompressed. - */ -int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, - int *got_picture_ptr, - const AVPacket *avpkt); - -/** - * Decode a subtitle message. - * Return a negative value on error, otherwise return the number of bytes used. - * If no subtitle could be decompressed, got_sub_ptr is zero. - * Otherwise, the subtitle is stored in *sub. - * Note that AV_CODEC_CAP_DR1 is not available for subtitle codecs. This is for - * simplicity, because the performance difference is expect to be negligible - * and reusing a get_buffer written for video codecs would probably perform badly - * due to a potentially very different allocation pattern. - * - * Some decoders (those marked with CODEC_CAP_DELAY) have a delay between input - * and output. This means that for some packets they will not immediately - * produce decoded output and need to be flushed at the end of decoding to get - * all the decoded data. Flushing is done by calling this function with packets - * with avpkt->data set to NULL and avpkt->size set to 0 until it stops - * returning subtitles. It is safe to flush even those decoders that are not - * marked with CODEC_CAP_DELAY, then no subtitles will be returned. - * - * @note The AVCodecContext MUST have been opened with @ref avcodec_open2() - * before packets may be fed to the decoder. - * - * @param avctx the codec context - * @param[out] sub The Preallocated AVSubtitle in which the decoded subtitle will be stored, - * must be freed with avsubtitle_free if *got_sub_ptr is set. - * @param[in,out] got_sub_ptr Zero if no subtitle could be decompressed, otherwise, it is nonzero. - * @param[in] avpkt The input AVPacket containing the input buffer. - */ -int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, - int *got_sub_ptr, - AVPacket *avpkt); - -/** - * @defgroup lavc_parsing Frame parsing - * @{ - */ - -enum AVPictureStructure { - AV_PICTURE_STRUCTURE_UNKNOWN, //< unknown - AV_PICTURE_STRUCTURE_TOP_FIELD, //< coded as top field - AV_PICTURE_STRUCTURE_BOTTOM_FIELD, //< coded as bottom field - AV_PICTURE_STRUCTURE_FRAME, //< coded as frame -}; - -typedef struct AVCodecParserContext { - void *priv_data; - struct AVCodecParser *parser; - int64_t frame_offset; /* offset of the current frame */ - int64_t cur_offset; /* current offset - (incremented by each av_parser_parse()) */ - int64_t next_frame_offset; /* offset of the next frame */ - /* video info */ - int pict_type; /* XXX: Put it back in AVCodecContext. */ - /** - * This field is used for proper frame duration computation in lavf. - * It signals, how much longer the frame duration of the current frame - * is compared to normal frame duration. - * - * frame_duration = (1 + repeat_pict) * time_base - * - * It is used by codecs like H.264 to display telecined material. - */ - int repeat_pict; /* XXX: Put it back in AVCodecContext. */ - int64_t pts; /* pts of the current frame */ - int64_t dts; /* dts of the current frame */ - - /* private data */ - int64_t last_pts; - int64_t last_dts; - int fetch_timestamp; - -#define AV_PARSER_PTS_NB 4 - int cur_frame_start_index; - int64_t cur_frame_offset[AV_PARSER_PTS_NB]; - int64_t cur_frame_pts[AV_PARSER_PTS_NB]; - int64_t cur_frame_dts[AV_PARSER_PTS_NB]; - - int flags; -#define PARSER_FLAG_COMPLETE_FRAMES 0x0001 -#define PARSER_FLAG_ONCE 0x0002 -/// Set if the parser has a valid file offset -#define PARSER_FLAG_FETCHED_OFFSET 0x0004 -#define PARSER_FLAG_USE_CODEC_TS 0x1000 - - int64_t offset; ///< byte offset from starting packet start - int64_t cur_frame_end[AV_PARSER_PTS_NB]; - - /** - * Set by parser to 1 for key frames and 0 for non-key frames. - * It is initialized to -1, so if the parser doesn't set this flag, - * old-style fallback using AV_PICTURE_TYPE_I picture type as key frames - * will be used. - */ - int key_frame; - -#if FF_API_CONVERGENCE_DURATION - /** - * @deprecated unused - */ - attribute_deprecated - int64_t convergence_duration; -#endif - - // Timestamp generation support: - /** - * Synchronization point for start of timestamp generation. - * - * Set to >0 for sync point, 0 for no sync point and <0 for undefined - * (default). - * - * For example, this corresponds to presence of H.264 buffering period - * SEI message. - */ - int dts_sync_point; - - /** - * Offset of the current timestamp against last timestamp sync point in - * units of AVCodecContext.time_base. - * - * Set to INT_MIN when dts_sync_point unused. Otherwise, it must - * contain a valid timestamp offset. - * - * Note that the timestamp of sync point has usually a nonzero - * dts_ref_dts_delta, which refers to the previous sync point. Offset of - * the next frame after timestamp sync point will be usually 1. - * - * For example, this corresponds to H.264 cpb_removal_delay. - */ - int dts_ref_dts_delta; - - /** - * Presentation delay of current frame in units of AVCodecContext.time_base. - * - * Set to INT_MIN when dts_sync_point unused. Otherwise, it must - * contain valid non-negative timestamp delta (presentation time of a frame - * must not lie in the past). - * - * This delay represents the difference between decoding and presentation - * time of the frame. - * - * For example, this corresponds to H.264 dpb_output_delay. - */ - int pts_dts_delta; - - /** - * Position of the packet in file. - * - * Analogous to cur_frame_pts/dts - */ - int64_t cur_frame_pos[AV_PARSER_PTS_NB]; - - /** - * Byte position of currently parsed frame in stream. - */ - int64_t pos; - - /** - * Previous frame byte position. - */ - int64_t last_pos; - - /** - * Duration of the current frame. - * For audio, this is in units of 1 / AVCodecContext.sample_rate. - * For all other types, this is in units of AVCodecContext.time_base. - */ - int duration; - - enum AVFieldOrder field_order; - - /** - * Indicate whether a picture is coded as a frame, top field or bottom field. - * - * For example, H.264 field_pic_flag equal to 0 corresponds to - * AV_PICTURE_STRUCTURE_FRAME. An H.264 picture with field_pic_flag - * equal to 1 and bottom_field_flag equal to 0 corresponds to - * AV_PICTURE_STRUCTURE_TOP_FIELD. - */ - enum AVPictureStructure picture_structure; - - /** - * Picture number incremented in presentation or output order. - * This field may be reinitialized at the first picture of a new sequence. - * - * For example, this corresponds to H.264 PicOrderCnt. - */ - int output_picture_number; - - /** - * Dimensions of the decoded video intended for presentation. - */ - int width; - int height; - - /** - * Dimensions of the coded video. - */ - int coded_width; - int coded_height; - - /** - * The format of the coded data, corresponds to enum AVPixelFormat for video - * and for enum AVSampleFormat for audio. - * - * Note that a decoder can have considerable freedom in how exactly it - * decodes the data, so the format reported here might be different from the - * one returned by a decoder. - */ - int format; -} AVCodecParserContext; - -typedef struct AVCodecParser { - int codec_ids[5]; /* several codec IDs are permitted */ - int priv_data_size; - int (*parser_init)(AVCodecParserContext *s); - /* This callback never returns an error, a negative value means that - * the frame start was in a previous packet. */ - int (*parser_parse)(AVCodecParserContext *s, - AVCodecContext *avctx, - const uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size); - void (*parser_close)(AVCodecParserContext *s); - int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size); - struct AVCodecParser *next; -} AVCodecParser; - -AVCodecParser *av_parser_next(const AVCodecParser *c); - -void av_register_codec_parser(AVCodecParser *parser); -AVCodecParserContext *av_parser_init(int codec_id); - -/** - * Parse a packet. - * - * @param s parser context. - * @param avctx codec context. - * @param poutbuf set to pointer to parsed buffer or NULL if not yet finished. - * @param poutbuf_size set to size of parsed buffer or zero if not yet finished. - * @param buf input buffer. - * @param buf_size input length, to signal EOF, this should be 0 (so that the last frame can be output). - * @param pts input presentation timestamp. - * @param dts input decoding timestamp. - * @param pos input byte position in stream. - * @return the number of bytes of the input bitstream used. - * - * Example: - * @code - * while(in_len){ - * len = av_parser_parse2(myparser, AVCodecContext, &data, &size, - * in_data, in_len, - * pts, dts, pos); - * in_data += len; - * in_len -= len; - * - * if(size) - * decode_frame(data, size); - * } - * @endcode - */ -int av_parser_parse2(AVCodecParserContext *s, - AVCodecContext *avctx, - uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size, - int64_t pts, int64_t dts, - int64_t pos); - -/** - * @return 0 if the output buffer is a subset of the input, 1 if it is allocated and must be freed - * @deprecated use AVBitStreamFilter - */ -int av_parser_change(AVCodecParserContext *s, - AVCodecContext *avctx, - uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size, int keyframe); -void av_parser_close(AVCodecParserContext *s); - -/** - * @} - * @} - */ - -/** - * @addtogroup lavc_encoding - * @{ - */ - -/** - * Find a registered encoder with a matching codec ID. - * - * @param id AVCodecID of the requested encoder - * @return An encoder if one was found, NULL otherwise. - */ -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. - * - * Takes input samples from frame and writes the next output packet, if - * available, to avpkt. The output packet does not necessarily contain data for - * the most recent frame, as encoders can delay, split, and combine input frames - * internally as needed. - * - * @param avctx codec context - * @param avpkt output AVPacket. - * The user can supply an output buffer by setting - * avpkt->data and avpkt->size prior to calling the - * function, but if the size of the user-provided data is not - * large enough, encoding will fail. If avpkt->data and - * avpkt->size are set, avpkt->destruct must also be set. All - * other AVPacket fields will be reset by the encoder using - * av_init_packet(). If avpkt->data is NULL, the encoder will - * allocate it. The encoder will set avpkt->size to the size - * of the output packet. - * - * If this function fails or produces no output, avpkt will be - * freed using av_packet_unref(). - * @param[in] frame AVFrame containing the raw audio data to be encoded. - * May be NULL when flushing an encoder that has the - * AV_CODEC_CAP_DELAY capability set. - * If AV_CODEC_CAP_VARIABLE_FRAME_SIZE is set, then each frame - * can have any number of samples. - * If it is not set, frame->nb_samples must be equal to - * avctx->frame_size for all frames except the last. - * The final frame may be smaller than avctx->frame_size. - * @param[out] got_packet_ptr This field is set to 1 by libavcodec if the - * output packet is non-empty, and to 0 if it is - * empty. If the function returns an error, the - * packet can be assumed to be invalid, and the - * value of got_packet_ptr is undefined and should - * not be used. - * @return 0 on success, negative error code on failure - */ -int avcodec_encode_audio2(AVCodecContext *avctx, AVPacket *avpkt, - const AVFrame *frame, int *got_packet_ptr); - -/** - * Encode a frame of video. - * - * Takes input raw video data from frame and writes the next output packet, if - * available, to avpkt. The output packet does not necessarily contain data for - * the most recent frame, as encoders can delay and reorder input frames - * internally as needed. - * - * @param avctx codec context - * @param avpkt output AVPacket. - * The user can supply an output buffer by setting - * avpkt->data and avpkt->size prior to calling the - * function, but if the size of the user-provided data is not - * large enough, encoding will fail. All other AVPacket fields - * will be reset by the encoder using av_init_packet(). If - * avpkt->data is NULL, the encoder will allocate it. - * The encoder will set avpkt->size to the size of the - * output packet. The returned data (if any) belongs to the - * caller, he is responsible for freeing it. - * - * If this function fails or produces no output, avpkt will be - * freed using av_packet_unref(). - * @param[in] frame AVFrame containing the raw video data to be encoded. - * May be NULL when flushing an encoder that has the - * AV_CODEC_CAP_DELAY capability set. - * @param[out] got_packet_ptr This field is set to 1 by libavcodec if the - * output packet is non-empty, and to 0 if it is - * empty. If the function returns an error, the - * packet can be assumed to be invalid, and the - * value of got_packet_ptr is undefined and should - * not be used. - * @return 0 on success, negative error code on failure - */ -int avcodec_encode_video2(AVCodecContext *avctx, AVPacket *avpkt, - const AVFrame *frame, int *got_packet_ptr); - -int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, - const AVSubtitle *sub); - - -/** - * @} - */ - -#if FF_API_AVCODEC_RESAMPLE -/** - * @defgroup lavc_resample Audio resampling - * @ingroup libavc - * @deprecated use libswresample instead - * - * @{ - */ -struct ReSampleContext; -struct AVResampleContext; - -typedef struct ReSampleContext ReSampleContext; - -/** - * Initialize audio resampling context. - * - * @param output_channels number of output channels - * @param input_channels number of input channels - * @param output_rate output sample rate - * @param input_rate input sample rate - * @param sample_fmt_out requested output sample format - * @param sample_fmt_in input sample format - * @param filter_length length of each FIR filter in the filterbank relative to the cutoff frequency - * @param log2_phase_count log2 of the number of entries in the polyphase filterbank - * @param linear if 1 then the used FIR filter will be linearly interpolated - between the 2 closest, if 0 the closest will be used - * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate - * @return allocated ReSampleContext, NULL if error occurred - */ -attribute_deprecated -ReSampleContext *av_audio_resample_init(int output_channels, int input_channels, - int output_rate, int input_rate, - enum AVSampleFormat sample_fmt_out, - enum AVSampleFormat sample_fmt_in, - int filter_length, int log2_phase_count, - int linear, double cutoff); - -attribute_deprecated -int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples); - -/** - * Free resample context. - * - * @param s a non-NULL pointer to a resample context previously - * created with av_audio_resample_init() - */ -attribute_deprecated -void audio_resample_close(ReSampleContext *s); - - -/** - * Initialize an audio resampler. - * Note, if either rate is not an integer then simply scale both rates up so they are. - * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq - * @param log2_phase_count log2 of the number of entries in the polyphase filterbank - * @param linear If 1 then the used FIR filter will be linearly interpolated - between the 2 closest, if 0 the closest will be used - * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate - */ -attribute_deprecated -struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff); - -/** - * Resample an array of samples using a previously configured context. - * @param src an array of unconsumed samples - * @param consumed the number of samples of src which have been consumed are returned here - * @param src_size the number of unconsumed samples available - * @param dst_size the amount of space in samples available in dst - * @param update_ctx If this is 0 then the context will not be modified, that way several channels can be resampled with the same context. - * @return the number of samples written in dst or -1 if an error occurred - */ -attribute_deprecated -int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx); - - -/** - * Compensate samplerate/timestamp drift. The compensation is done by changing - * the resampler parameters, so no audible clicks or similar distortions occur - * @param compensation_distance distance in output samples over which the compensation should be performed - * @param sample_delta number of output samples which should be output less - * - * example: av_resample_compensate(c, 10, 500) - * here instead of 510 samples only 500 samples would be output - * - * note, due to rounding the actual compensation might be slightly different, - * especially if the compensation_distance is large and the in_rate used during init is small - */ -attribute_deprecated -void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance); -attribute_deprecated -void av_resample_close(struct AVResampleContext *c); - -/** - * @} - */ -#endif - -#if FF_API_AVPICTURE -/** - * @addtogroup lavc_picture - * @{ - */ - -/** - * @deprecated unused - */ -attribute_deprecated -int avpicture_alloc(AVPicture *picture, enum AVPixelFormat pix_fmt, int width, int height); - -/** - * @deprecated unused - */ -attribute_deprecated -void avpicture_free(AVPicture *picture); - -/** - * @deprecated use av_image_fill_arrays() instead. - */ -attribute_deprecated -int avpicture_fill(AVPicture *picture, const uint8_t *ptr, - enum AVPixelFormat pix_fmt, int width, int height); - -/** - * @deprecated use av_image_copy_to_buffer() instead. - */ -attribute_deprecated -int avpicture_layout(const AVPicture *src, enum AVPixelFormat pix_fmt, - int width, int height, - unsigned char *dest, int dest_size); - -/** - * @deprecated use av_image_get_buffer_size() instead. - */ -attribute_deprecated -int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height); - -/** - * @deprecated av_image_copy() instead. - */ -attribute_deprecated -void av_picture_copy(AVPicture *dst, const AVPicture *src, - enum AVPixelFormat pix_fmt, int width, int height); - -/** - * @deprecated unused - */ -attribute_deprecated -int av_picture_crop(AVPicture *dst, const AVPicture *src, - enum AVPixelFormat pix_fmt, int top_band, int left_band); - -/** - * @deprecated unused - */ -attribute_deprecated -int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, enum AVPixelFormat pix_fmt, - int padtop, int padbottom, int padleft, int padright, int *color); - -/** - * @} - */ -#endif - -/** - * @defgroup lavc_misc Utility functions - * @ingroup libavc - * - * Miscellaneous utility functions related to both encoding and decoding - * (or neither). - * @{ - */ - -/** - * @defgroup lavc_misc_pixfmt Pixel formats - * - * Functions for working with pixel formats. - * @{ - */ - -/** - * Utility function to access log2_chroma_w log2_chroma_h from - * the pixel format AVPixFmtDescriptor. - * - * This function asserts that pix_fmt is valid. See av_pix_fmt_get_chroma_sub_sample - * for one that returns a failure code and continues in case of invalid - * pix_fmts. - * - * @param[in] pix_fmt the pixel format - * @param[out] h_shift store log2_chroma_w - * @param[out] v_shift store log2_chroma_h - * - * @see av_pix_fmt_get_chroma_sub_sample - */ - -void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift); - -/** - * Return a value representing the fourCC code associated to the - * pixel format pix_fmt, or 0 if no associated fourCC code can be - * found. - */ -unsigned int avcodec_pix_fmt_to_codec_tag(enum AVPixelFormat pix_fmt); - -/** - * @deprecated see av_get_pix_fmt_loss() - */ -int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat src_pix_fmt, - int has_alpha); - -/** - * Find the best pixel format to convert to given a certain source pixel - * format. When converting from one pixel format to another, information loss - * may occur. For example, when converting from RGB24 to GRAY, the color - * information will be lost. Similarly, other losses occur when converting from - * some formats to other formats. avcodec_find_best_pix_fmt_of_2() searches which of - * the given pixel formats should be used to suffer the least amount of loss. - * The pixel formats from which it chooses one, are determined by the - * pix_fmt_list parameter. - * - * - * @param[in] pix_fmt_list AV_PIX_FMT_NONE terminated array of pixel formats to choose from - * @param[in] src_pix_fmt source pixel format - * @param[in] has_alpha Whether the source pixel format alpha channel is used. - * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur. - * @return The best pixel format to convert to or -1 if none was found. - */ -enum AVPixelFormat avcodec_find_best_pix_fmt_of_list(const enum AVPixelFormat *pix_fmt_list, - enum AVPixelFormat src_pix_fmt, - int has_alpha, int *loss_ptr); - -/** - * @deprecated see av_find_best_pix_fmt_of_2() - */ -enum AVPixelFormat avcodec_find_best_pix_fmt_of_2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2, - enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr); - -attribute_deprecated -#if AV_HAVE_INCOMPATIBLE_LIBAV_ABI -enum AVPixelFormat avcodec_find_best_pix_fmt2(const enum AVPixelFormat *pix_fmt_list, - enum AVPixelFormat src_pix_fmt, - int has_alpha, int *loss_ptr); -#else -enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2, - enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr); -#endif - - -enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat * fmt); - -/** - * @} - */ - -#if FF_API_SET_DIMENSIONS -/** - * @deprecated this function is not supposed to be used from outside of lavc - */ -attribute_deprecated -void avcodec_set_dimensions(AVCodecContext *s, int width, int height); -#endif - -/** - * Put a string representing the codec tag codec_tag in buf. - * - * @param buf buffer to place codec tag in - * @param buf_size size in bytes of buf - * @param codec_tag codec tag to assign - * @return the length of the string that would have been generated if - * enough space had been available, excluding the trailing null - */ -size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag); - -void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode); - -/** - * Return a name for the specified profile, if available. - * - * @param codec the codec that is searched for the given profile - * @param profile the profile value for which a name is requested - * @return A name for the profile if found, NULL otherwise. - */ -const char *av_get_profile_name(const AVCodec *codec, int profile); - -/** - * Return a name for the specified profile, if available. - * - * @param codec_id the ID of the codec to which the requested profile belongs - * @param profile the profile value for which a name is requested - * @return A name for the profile if found, NULL otherwise. - * - * @note unlike av_get_profile_name(), which searches a list of profiles - * supported by a specific decoder or encoder implementation, this - * function searches the list of profiles from the AVCodecDescriptor - */ -const char *avcodec_profile_name(enum AVCodecID codec_id, int profile); - -int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size); -int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int, int),void *arg, int *ret, int count); -//FIXME func typedef - -/** - * Fill AVFrame audio data and linesize pointers. - * - * The buffer buf must be a preallocated buffer with a size big enough - * to contain the specified samples amount. The filled AVFrame data - * pointers will point to this buffer. - * - * AVFrame extended_data channel pointers are allocated if necessary for - * planar audio. - * - * @param frame the AVFrame - * frame->nb_samples must be set prior to calling the - * function. This function fills in frame->data, - * frame->extended_data, frame->linesize[0]. - * @param nb_channels channel count - * @param sample_fmt sample format - * @param buf buffer to use for frame data - * @param buf_size size of buffer - * @param align plane size sample alignment (0 = default) - * @return >=0 on success, negative error code on failure - * @todo return the size in bytes required to store the samples in - * case of success, at the next libavutil bump - */ -int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, - enum AVSampleFormat sample_fmt, const uint8_t *buf, - int buf_size, int align); - -/** - * Reset the internal decoder state / flush internal buffers. Should be called - * e.g. when seeking or when switching to a different stream. - * - * @note when refcounted frames are not used (i.e. avctx->refcounted_frames is 0), - * this invalidates the frames previously returned from the decoder. When - * refcounted frames are used, the decoder just releases any references it might - * keep internally, but the caller's reference remains valid. - */ -void avcodec_flush_buffers(AVCodecContext *avctx); - -/** - * Return codec bits per sample. - * - * @param[in] codec_id the codec - * @return Number of bits per sample or zero if unknown for the given codec. - */ -int av_get_bits_per_sample(enum AVCodecID codec_id); - -/** - * Return the PCM codec associated with a sample format. - * @param be endianness, 0 for little, 1 for big, - * -1 (or anything else) for native - * @return AV_CODEC_ID_PCM_* or AV_CODEC_ID_NONE - */ -enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be); - -/** - * Return codec bits per sample. - * Only return non-zero if the bits per sample is exactly correct, not an - * approximation. - * - * @param[in] codec_id the codec - * @return Number of bits per sample or zero if unknown for the given codec. - */ -int av_get_exact_bits_per_sample(enum AVCodecID codec_id); - -/** - * Return audio frame duration. - * - * @param avctx codec context - * @param frame_bytes size of the frame, or 0 if unknown - * @return frame duration, in samples, if known. 0 if not able to - * determine. - */ -int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes); - - -typedef struct AVBitStreamFilterContext { - void *priv_data; - struct AVBitStreamFilter *filter; - AVCodecParserContext *parser; - struct AVBitStreamFilterContext *next; - /** - * Internal default arguments, used if NULL is passed to av_bitstream_filter_filter(). - * Not for access by library users. - */ - char *args; -} AVBitStreamFilterContext; - - -typedef struct AVBitStreamFilter { - const char *name; - int priv_data_size; - int (*filter)(AVBitStreamFilterContext *bsfc, - AVCodecContext *avctx, const char *args, - uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size, int keyframe); - void (*close)(AVBitStreamFilterContext *bsfc); - struct AVBitStreamFilter *next; -} AVBitStreamFilter; - -/** - * Register a bitstream filter. - * - * The filter will be accessible to the application code through - * av_bitstream_filter_next() or can be directly initialized with - * av_bitstream_filter_init(). - * - * @see avcodec_register_all() - */ -void av_register_bitstream_filter(AVBitStreamFilter *bsf); - -/** - * Create and initialize a bitstream filter context given a bitstream - * filter name. - * - * The returned context must be freed with av_bitstream_filter_close(). - * - * @param name the name of the bitstream filter - * @return a bitstream filter context if a matching filter was found - * and successfully initialized, NULL otherwise - */ -AVBitStreamFilterContext *av_bitstream_filter_init(const char *name); - -/** - * Filter bitstream. - * - * This function filters the buffer buf with size buf_size, and places the - * filtered buffer in the buffer pointed to by poutbuf. - * - * The output buffer must be freed by the caller. - * - * @param bsfc bitstream filter context created by av_bitstream_filter_init() - * @param avctx AVCodecContext accessed by the filter, may be NULL. - * If specified, this must point to the encoder context of the - * output stream the packet is sent to. - * @param args arguments which specify the filter configuration, may be NULL - * @param poutbuf pointer which is updated to point to the filtered buffer - * @param poutbuf_size pointer which is updated to the filtered buffer size in bytes - * @param buf buffer containing the data to filter - * @param buf_size size in bytes of buf - * @param keyframe set to non-zero if the buffer to filter corresponds to a key-frame packet data - * @return >= 0 in case of success, or a negative error code in case of failure - * - * If the return value is positive, an output buffer is allocated and - * is available in *poutbuf, and is distinct from the input buffer. - * - * If the return value is 0, the output buffer is not allocated and - * should be considered identical to the input buffer, or in case - * *poutbuf was set it points to the input buffer (not necessarily to - * its starting address). - */ -int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc, - AVCodecContext *avctx, const char *args, - uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size, int keyframe); - -/** - * Release bitstream filter context. - * - * @param bsf the bitstream filter context created with - * av_bitstream_filter_init(), can be NULL - */ -void av_bitstream_filter_close(AVBitStreamFilterContext *bsf); - -/** - * If f is NULL, return the first registered bitstream filter, - * if f is non-NULL, return the next registered bitstream filter - * after f, or NULL if f is the last one. - * - * This function can be used to iterate over all registered bitstream - * filters. - */ -AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f); - -/* memory */ - -/** - * Same behaviour av_fast_malloc but the buffer has additional - * AV_INPUT_BUFFER_PADDING_SIZE at the end which will always be 0. - * - * In addition the whole buffer will initially and after resizes - * be 0-initialized so that no uninitialized data will ever appear. - */ -void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size); - -/** - * Same behaviour av_fast_padded_malloc except that buffer will always - * be 0-initialized after call. - */ -void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size); - -/** - * Encode extradata length to a buffer. Used by xiph codecs. - * - * @param s buffer to write to; must be at least (v/255+1) bytes long - * @param v size of extradata in bytes - * @return number of bytes written to the buffer. - */ -unsigned int av_xiphlacing(unsigned char *s, unsigned int v); - -#if FF_API_MISSING_SAMPLE -/** - * Log a generic warning message about a missing feature. This function is - * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.) - * only, and would normally not be used by applications. - * @param[in] avc a pointer to an arbitrary struct of which the first field is - * a pointer to an AVClass struct - * @param[in] feature string containing the name of the missing feature - * @param[in] want_sample indicates if samples are wanted which exhibit this feature. - * If want_sample is non-zero, additional verbage will be added to the log - * message which tells the user how to report samples to the development - * mailing list. - * @deprecated Use avpriv_report_missing_feature() instead. - */ -attribute_deprecated -void av_log_missing_feature(void *avc, const char *feature, int want_sample); - -/** - * Log a generic warning message asking for a sample. This function is - * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.) - * only, and would normally not be used by applications. - * @param[in] avc a pointer to an arbitrary struct of which the first field is - * a pointer to an AVClass struct - * @param[in] msg string containing an optional message, or NULL if no message - * @deprecated Use avpriv_request_sample() instead. - */ -attribute_deprecated -void av_log_ask_for_sample(void *avc, const char *msg, ...) av_printf_format(2, 3); -#endif /* FF_API_MISSING_SAMPLE */ - -/** - * Register the hardware accelerator hwaccel. - */ -void av_register_hwaccel(AVHWAccel *hwaccel); - -/** - * If hwaccel is NULL, returns the first registered hardware accelerator, - * if hwaccel is non-NULL, returns the next registered hardware accelerator - * after hwaccel, or NULL if hwaccel is the last one. - */ -AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel); - - -/** - * Lock operation used by lockmgr - */ -enum AVLockOp { - AV_LOCK_CREATE, ///< Create a mutex - AV_LOCK_OBTAIN, ///< Lock the mutex - AV_LOCK_RELEASE, ///< Unlock the mutex - AV_LOCK_DESTROY, ///< Free mutex resources -}; - -/** - * Register a user provided lock manager supporting the operations - * specified by AVLockOp. The "mutex" argument to the function points - * to a (void *) where the lockmgr should store/get a pointer to a user - * allocated mutex. It is NULL upon AV_LOCK_CREATE and equal to the - * value left by the last call for all other ops. If the lock manager is - * unable to perform the op then it should leave the mutex in the same - * state as when it was called and return a non-zero value. However, - * when called with AV_LOCK_DESTROY the mutex will always be assumed to - * have been successfully destroyed. If av_lockmgr_register succeeds - * it will return a non-negative value, if it fails it will return a - * negative value and destroy all mutex and unregister all callbacks. - * av_lockmgr_register is not thread-safe, it must be called from a - * single thread before any calls which make use of locking are used. - * - * @param cb User defined callback. av_lockmgr_register invokes calls - * to this callback and the previously registered callback. - * The callback will be used to create more than one mutex - * each of which must be backed by its own underlying locking - * mechanism (i.e. do not use a single static object to - * implement your lock manager). If cb is set to NULL the - * lockmgr will be unregistered. - */ -int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op)); - -/** - * Get the type of the given codec. - */ -enum AVMediaType avcodec_get_type(enum AVCodecID codec_id); - -/** - * Get the name of a codec. - * @return a static string identifying the codec; never NULL - */ -const char *avcodec_get_name(enum AVCodecID id); - -/** - * @return a positive value if s is open (i.e. avcodec_open2() was called on it - * with no corresponding avcodec_close()), 0 otherwise. - */ -int avcodec_is_open(AVCodecContext *s); - -/** - * @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. - * - * @param size if non-NULL, the size of the allocated struct will be written - * here. This is useful for embedding it in side data. - * - * @return the newly allocated struct or NULL on failure - */ -AVCPBProperties *av_cpb_properties_alloc(size_t *size); - -/** - * @} - */ - -#endif /* AVCODEC_AVCODEC_H */ |