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/*
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 * copyright (c) 2001 Fabrice Bellard
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#ifndef AVCODEC_AVCODEC_H
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#define AVCODEC_AVCODEC_H
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/**
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 * @file
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 * external API header
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 */
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#include <errno.h>
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#include "libavcore/samplefmt.h"
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#include "libavutil/avutil.h"
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#include "libavutil/cpu.h"
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#define LIBAVCODEC_VERSION_MAJOR 52
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#define LIBAVCODEC_VERSION_MINOR 112
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#define LIBAVCODEC_VERSION_MICRO  1
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#define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
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                                               LIBAVCODEC_VERSION_MINOR, \
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                                               LIBAVCODEC_VERSION_MICRO)
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#define LIBAVCODEC_VERSION      AV_VERSION(LIBAVCODEC_VERSION_MAJOR,    \
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                                           LIBAVCODEC_VERSION_MINOR,    \
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                                           LIBAVCODEC_VERSION_MICRO)
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#define LIBAVCODEC_BUILD        LIBAVCODEC_VERSION_INT
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#define LIBAVCODEC_IDENT        "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
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/**
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 * Those FF_API_* defines are not part of public API.
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 * They may change, break or disappear at any time.
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 */
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#ifndef FF_API_PALETTE_CONTROL
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#define FF_API_PALETTE_CONTROL  (LIBAVCODEC_VERSION_MAJOR < 54)
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#endif
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#ifndef FF_API_MM_FLAGS
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#define FF_API_MM_FLAGS         (LIBAVCODEC_VERSION_MAJOR < 53)
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#endif
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#ifndef FF_API_OPT_SHOW
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#define FF_API_OPT_SHOW         (LIBAVCODEC_VERSION_MAJOR < 53)
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#endif
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#ifndef FF_API_AUDIO_OLD
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#define FF_API_AUDIO_OLD        (LIBAVCODEC_VERSION_MAJOR < 53)
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#endif
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#ifndef FF_API_VIDEO_OLD
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#define FF_API_VIDEO_OLD        (LIBAVCODEC_VERSION_MAJOR < 53)
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#endif
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#ifndef FF_API_SUBTITLE_OLD
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#define FF_API_SUBTITLE_OLD     (LIBAVCODEC_VERSION_MAJOR < 53)
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#endif
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#ifndef FF_API_USE_LPC
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#define FF_API_USE_LPC          (LIBAVCODEC_VERSION_MAJOR < 53)
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#endif
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#ifndef FF_API_SET_STRING_OLD
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#define FF_API_SET_STRING_OLD   (LIBAVCODEC_VERSION_MAJOR < 53)
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#endif
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#ifndef FF_API_INOFFICIAL
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#define FF_API_INOFFICIAL       (LIBAVCODEC_VERSION_MAJOR < 53)
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#endif
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#ifndef FF_API_OLD_SAMPLE_FMT
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#define FF_API_OLD_SAMPLE_FMT   (LIBAVCODEC_VERSION_MAJOR < 53)
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#endif
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#ifndef FF_API_OLD_AUDIOCONVERT
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#define FF_API_OLD_AUDIOCONVERT (LIBAVCODEC_VERSION_MAJOR < 53)
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#endif
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#if LIBAVCODEC_VERSION_MAJOR < 53
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#   define FF_INTERNALC_MEM_TYPE unsigned int
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#else
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#   define FF_INTERNALC_MEM_TYPE size_t
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#endif
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/**
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 * Identify the syntax and semantics of the bitstream.
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 * The principle is roughly:
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 * Two decoders with the same ID can decode the same streams.
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 * Two encoders with the same ID can encode compatible streams.
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 * There may be slight deviations from the principle due to implementation
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 * details.
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 *
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 * If you add a codec ID to this list, add it so that
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 * 1. no value of a existing codec ID changes (that would break ABI),
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 * 2. it is as close as possible to similar codecs.
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 */
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enum CodecID {
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    CODEC_ID_NONE,
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    /* video codecs */
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    CODEC_ID_MPEG1VIDEO,
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    CODEC_ID_MPEG2VIDEO, ///< preferred ID for MPEG-1/2 video decoding
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    CODEC_ID_MPEG2VIDEO_XVMC,
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    CODEC_ID_H261,
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    CODEC_ID_H263,
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    CODEC_ID_RV10,
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    CODEC_ID_RV20,
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    CODEC_ID_MJPEG,
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    CODEC_ID_MJPEGB,
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    CODEC_ID_LJPEG,
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    CODEC_ID_SP5X,
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    CODEC_ID_JPEGLS,
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    CODEC_ID_MPEG4,
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    CODEC_ID_RAWVIDEO,
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    CODEC_ID_MSMPEG4V1,
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    CODEC_ID_MSMPEG4V2,
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    CODEC_ID_MSMPEG4V3,
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    CODEC_ID_WMV1,
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    CODEC_ID_WMV2,
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    CODEC_ID_H263P,
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    CODEC_ID_H263I,
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    CODEC_ID_FLV1,
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    CODEC_ID_SVQ1,
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    CODEC_ID_SVQ3,
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    CODEC_ID_DVVIDEO,
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    CODEC_ID_HUFFYUV,
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    CODEC_ID_CYUV,
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    CODEC_ID_H264,
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    CODEC_ID_INDEO3,
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    CODEC_ID_VP3,
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    CODEC_ID_THEORA,
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    CODEC_ID_ASV1,
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    CODEC_ID_ASV2,
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    CODEC_ID_FFV1,
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    CODEC_ID_4XM,
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    CODEC_ID_VCR1,
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    CODEC_ID_CLJR,
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    CODEC_ID_MDEC,
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    CODEC_ID_ROQ,
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    CODEC_ID_INTERPLAY_VIDEO,
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    CODEC_ID_XAN_WC3,
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    CODEC_ID_XAN_WC4,
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    CODEC_ID_RPZA,
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    CODEC_ID_CINEPAK,
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    CODEC_ID_WS_VQA,
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    CODEC_ID_MSRLE,
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    CODEC_ID_MSVIDEO1,
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    CODEC_ID_IDCIN,
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    CODEC_ID_8BPS,
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    CODEC_ID_SMC,
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    CODEC_ID_FLIC,
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    CODEC_ID_TRUEMOTION1,
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    CODEC_ID_VMDVIDEO,
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    CODEC_ID_MSZH,
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    CODEC_ID_ZLIB,
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    CODEC_ID_QTRLE,
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    CODEC_ID_SNOW,
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    CODEC_ID_TSCC,
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    CODEC_ID_ULTI,
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    CODEC_ID_QDRAW,
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    CODEC_ID_VIXL,
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    CODEC_ID_QPEG,
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#if LIBAVCODEC_VERSION_MAJOR < 53
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    CODEC_ID_XVID,
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#endif
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    CODEC_ID_PNG,
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    CODEC_ID_PPM,
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    CODEC_ID_PBM,
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    CODEC_ID_PGM,
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    CODEC_ID_PGMYUV,
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    CODEC_ID_PAM,
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    CODEC_ID_FFVHUFF,
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    CODEC_ID_RV30,
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    CODEC_ID_RV40,
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    CODEC_ID_VC1,
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    CODEC_ID_WMV3,
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    CODEC_ID_LOCO,
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    CODEC_ID_WNV1,
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    CODEC_ID_AASC,
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    CODEC_ID_INDEO2,
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    CODEC_ID_FRAPS,
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    CODEC_ID_TRUEMOTION2,
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    CODEC_ID_BMP,
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    CODEC_ID_CSCD,
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    CODEC_ID_MMVIDEO,
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    CODEC_ID_ZMBV,
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    CODEC_ID_AVS,
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    CODEC_ID_SMACKVIDEO,
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    CODEC_ID_NUV,
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    CODEC_ID_KMVC,
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    CODEC_ID_FLASHSV,
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    CODEC_ID_CAVS,
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    CODEC_ID_JPEG2000,
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    CODEC_ID_VMNC,
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    CODEC_ID_VP5,
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    CODEC_ID_VP6,
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    CODEC_ID_VP6F,
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    CODEC_ID_TARGA,
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    CODEC_ID_DSICINVIDEO,
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    CODEC_ID_TIERTEXSEQVIDEO,
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    CODEC_ID_TIFF,
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    CODEC_ID_GIF,
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    CODEC_ID_FFH264,
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    CODEC_ID_DXA,
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    CODEC_ID_DNXHD,
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    CODEC_ID_THP,
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    CODEC_ID_SGI,
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    CODEC_ID_C93,
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    CODEC_ID_BETHSOFTVID,
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    CODEC_ID_PTX,
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    CODEC_ID_TXD,
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    CODEC_ID_VP6A,
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    CODEC_ID_AMV,
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    CODEC_ID_VB,
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    CODEC_ID_PCX,
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    CODEC_ID_SUNRAST,
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    CODEC_ID_INDEO4,
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    CODEC_ID_INDEO5,
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    CODEC_ID_MIMIC,
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    CODEC_ID_RL2,
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    CODEC_ID_8SVX_EXP,
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    CODEC_ID_8SVX_FIB,
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    CODEC_ID_ESCAPE124,
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    CODEC_ID_DIRAC,
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    CODEC_ID_BFI,
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    CODEC_ID_CMV,
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    CODEC_ID_MOTIONPIXELS,
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    CODEC_ID_TGV,
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    CODEC_ID_TGQ,
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    CODEC_ID_TQI,
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    CODEC_ID_AURA,
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    CODEC_ID_AURA2,
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    CODEC_ID_V210X,
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    CODEC_ID_TMV,
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    CODEC_ID_V210,
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    CODEC_ID_DPX,
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    CODEC_ID_MAD,
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    CODEC_ID_FRWU,
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    CODEC_ID_FLASHSV2,
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    CODEC_ID_CDGRAPHICS,
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    CODEC_ID_R210,
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    CODEC_ID_ANM,
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    CODEC_ID_BINKVIDEO,
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    CODEC_ID_IFF_ILBM,
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    CODEC_ID_IFF_BYTERUN1,
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    CODEC_ID_KGV1,
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    CODEC_ID_YOP,
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    CODEC_ID_VP8,
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    CODEC_ID_PICTOR,
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    CODEC_ID_ANSI,
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    CODEC_ID_A64_MULTI,
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    CODEC_ID_A64_MULTI5,
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    CODEC_ID_R10K,
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    CODEC_ID_MXPEG,
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    CODEC_ID_LAGARITH,
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    CODEC_ID_PRORES,
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    /* various PCM "codecs" */
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    CODEC_ID_PCM_S16LE= 0x10000,
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    CODEC_ID_PCM_S16BE,
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    CODEC_ID_PCM_U16LE,
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    CODEC_ID_PCM_U16BE,
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    CODEC_ID_PCM_S8,
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    CODEC_ID_PCM_U8,
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    CODEC_ID_PCM_MULAW,
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    CODEC_ID_PCM_ALAW,
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    CODEC_ID_PCM_S32LE,
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    CODEC_ID_PCM_S32BE,
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    CODEC_ID_PCM_U32LE,
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    CODEC_ID_PCM_U32BE,
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    CODEC_ID_PCM_S24LE,
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    CODEC_ID_PCM_S24BE,
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    CODEC_ID_PCM_U24LE,
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    CODEC_ID_PCM_U24BE,
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    CODEC_ID_PCM_S24DAUD,
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    CODEC_ID_PCM_ZORK,
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    CODEC_ID_PCM_S16LE_PLANAR,
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    CODEC_ID_PCM_DVD,
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    CODEC_ID_PCM_F32BE,
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    CODEC_ID_PCM_F32LE,
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    CODEC_ID_PCM_F64BE,
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    CODEC_ID_PCM_F64LE,
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    CODEC_ID_PCM_BLURAY,
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    CODEC_ID_PCM_LXF,
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    /* various ADPCM codecs */
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    CODEC_ID_ADPCM_IMA_QT= 0x11000,
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    CODEC_ID_ADPCM_IMA_WAV,
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    CODEC_ID_ADPCM_IMA_DK3,
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    CODEC_ID_ADPCM_IMA_DK4,
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    CODEC_ID_ADPCM_IMA_WS,
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    CODEC_ID_ADPCM_IMA_SMJPEG,
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    CODEC_ID_ADPCM_MS,
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    CODEC_ID_ADPCM_4XM,
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    CODEC_ID_ADPCM_XA,
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    CODEC_ID_ADPCM_ADX,
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    CODEC_ID_ADPCM_EA,
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    CODEC_ID_ADPCM_G726,
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    CODEC_ID_ADPCM_CT,
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    CODEC_ID_ADPCM_SWF,
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    CODEC_ID_ADPCM_YAMAHA,
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    CODEC_ID_ADPCM_SBPRO_4,
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    CODEC_ID_ADPCM_SBPRO_3,
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    CODEC_ID_ADPCM_SBPRO_2,
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    CODEC_ID_ADPCM_THP,
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    CODEC_ID_ADPCM_IMA_AMV,
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    CODEC_ID_ADPCM_EA_R1,
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    CODEC_ID_ADPCM_EA_R3,
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    CODEC_ID_ADPCM_EA_R2,
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    CODEC_ID_ADPCM_IMA_EA_SEAD,
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    CODEC_ID_ADPCM_IMA_EA_EACS,
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    CODEC_ID_ADPCM_EA_XAS,
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    CODEC_ID_ADPCM_EA_MAXIS_XA,
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    CODEC_ID_ADPCM_IMA_ISS,
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    CODEC_ID_ADPCM_G722,
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    /* AMR */
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    CODEC_ID_AMR_NB= 0x12000,
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    CODEC_ID_AMR_WB,
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    /* RealAudio codecs*/
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    CODEC_ID_RA_144= 0x13000,
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    CODEC_ID_RA_288,
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    /* various DPCM codecs */
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    CODEC_ID_ROQ_DPCM= 0x14000,
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    CODEC_ID_INTERPLAY_DPCM,
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    CODEC_ID_XAN_DPCM,
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    CODEC_ID_SOL_DPCM,
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    /* audio codecs */
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    CODEC_ID_MP2= 0x15000,
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    CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3
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    CODEC_ID_AAC,
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    CODEC_ID_AC3,
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    CODEC_ID_DTS,
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    CODEC_ID_VORBIS,
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    CODEC_ID_DVAUDIO,
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    CODEC_ID_WMAV1,
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    CODEC_ID_WMAV2,
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    CODEC_ID_MACE3,
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    CODEC_ID_MACE6,
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    CODEC_ID_VMDAUDIO,
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    CODEC_ID_SONIC,
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    CODEC_ID_SONIC_LS,
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    CODEC_ID_FLAC,
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    CODEC_ID_MP3ADU,
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    CODEC_ID_MP3ON4,
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    CODEC_ID_SHORTEN,
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    CODEC_ID_ALAC,
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    CODEC_ID_WESTWOOD_SND1,
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    CODEC_ID_GSM, ///< as in Berlin toast format
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    CODEC_ID_QDM2,
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    CODEC_ID_COOK,
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    CODEC_ID_TRUESPEECH,
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    CODEC_ID_TTA,
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    CODEC_ID_SMACKAUDIO,
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    CODEC_ID_QCELP,
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    CODEC_ID_WAVPACK,
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    CODEC_ID_DSICINAUDIO,
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    CODEC_ID_IMC,
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    CODEC_ID_MUSEPACK7,
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    CODEC_ID_MLP,
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    CODEC_ID_GSM_MS, /* as found in WAV */
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    CODEC_ID_ATRAC3,
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    CODEC_ID_VOXWARE,
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    CODEC_ID_APE,
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    CODEC_ID_NELLYMOSER,
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    CODEC_ID_MUSEPACK8,
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    CODEC_ID_SPEEX,
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    CODEC_ID_WMAVOICE,
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    CODEC_ID_WMAPRO,
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    CODEC_ID_WMALOSSLESS,
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    CODEC_ID_ATRAC3P,
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    CODEC_ID_EAC3,
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    CODEC_ID_SIPR,
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    CODEC_ID_MP1,
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    CODEC_ID_TWINVQ,
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    CODEC_ID_TRUEHD,
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    CODEC_ID_MP4ALS,
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    CODEC_ID_ATRAC1,
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    CODEC_ID_BINKAUDIO_RDFT,
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    CODEC_ID_BINKAUDIO_DCT,
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    CODEC_ID_AAC_LATM,
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    CODEC_ID_QDMC,
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    /* subtitle codecs */
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    CODEC_ID_DVD_SUBTITLE= 0x17000,
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    CODEC_ID_DVB_SUBTITLE,
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    CODEC_ID_TEXT,  ///< raw UTF-8 text
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    CODEC_ID_XSUB,
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    CODEC_ID_SSA,
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    CODEC_ID_MOV_TEXT,
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    CODEC_ID_HDMV_PGS_SUBTITLE,
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    CODEC_ID_DVB_TELETEXT,
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    CODEC_ID_SRT,
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    /* other specific kind of codecs (generally used for attachments) */
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    CODEC_ID_TTF= 0x18000,
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    CODEC_ID_PROBE= 0x19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it
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    CODEC_ID_MPEG2TS= 0x20000, /**< _FAKE_ codec to indicate a raw MPEG-2 TS
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                                * stream (only used by libavformat) */
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    CODEC_ID_FFMETADATA=0x21000,   ///< Dummy codec for streams containing only metadata information.
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};
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#if LIBAVCODEC_VERSION_MAJOR < 53
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#define CodecType AVMediaType
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#define CODEC_TYPE_UNKNOWN    AVMEDIA_TYPE_UNKNOWN
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#define CODEC_TYPE_VIDEO      AVMEDIA_TYPE_VIDEO
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#define CODEC_TYPE_AUDIO      AVMEDIA_TYPE_AUDIO
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#define CODEC_TYPE_DATA       AVMEDIA_TYPE_DATA
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#define CODEC_TYPE_SUBTITLE   AVMEDIA_TYPE_SUBTITLE
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#define CODEC_TYPE_ATTACHMENT AVMEDIA_TYPE_ATTACHMENT
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#define CODEC_TYPE_NB         AVMEDIA_TYPE_NB
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#endif
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#if FF_API_OLD_SAMPLE_FMT
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#define SampleFormat AVSampleFormat
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#define SAMPLE_FMT_NONE AV_SAMPLE_FMT_NONE
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#define SAMPLE_FMT_U8   AV_SAMPLE_FMT_U8
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#define SAMPLE_FMT_S16  AV_SAMPLE_FMT_S16
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#define SAMPLE_FMT_S32  AV_SAMPLE_FMT_S32
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#define SAMPLE_FMT_FLT  AV_SAMPLE_FMT_FLT
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#define SAMPLE_FMT_DBL  AV_SAMPLE_FMT_DBL
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#define SAMPLE_FMT_NB   AV_SAMPLE_FMT_NB
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#endif
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#if FF_API_OLD_AUDIOCONVERT
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#include "libavcore/audioconvert.h"
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/* Audio channel masks */
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#define CH_FRONT_LEFT            AV_CH_FRONT_LEFT
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#define CH_FRONT_RIGHT           AV_CH_FRONT_RIGHT
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#define CH_FRONT_CENTER          AV_CH_FRONT_CENTER
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#define CH_LOW_FREQUENCY         AV_CH_LOW_FREQUENCY
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#define CH_BACK_LEFT             AV_CH_BACK_LEFT
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#define CH_BACK_RIGHT            AV_CH_BACK_RIGHT
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#define CH_FRONT_LEFT_OF_CENTER  AV_CH_FRONT_LEFT_OF_CENTER
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#define CH_FRONT_RIGHT_OF_CENTER AV_CH_FRONT_RIGHT_OF_CENTER
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#define CH_BACK_CENTER           AV_CH_BACK_CENTER
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#define CH_SIDE_LEFT             AV_CH_SIDE_LEFT
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#define CH_SIDE_RIGHT            AV_CH_SIDE_RIGHT
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#define CH_TOP_CENTER            AV_CH_TOP_CENTER
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#define CH_TOP_FRONT_LEFT        AV_CH_TOP_FRONT_LEFT
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#define CH_TOP_FRONT_CENTER      AV_CH_TOP_FRONT_CENTER
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#define CH_TOP_FRONT_RIGHT       AV_CH_TOP_FRONT_RIGHT
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#define CH_TOP_BACK_LEFT         AV_CH_TOP_BACK_LEFT
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#define CH_TOP_BACK_CENTER       AV_CH_TOP_BACK_CENTER
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#define CH_TOP_BACK_RIGHT        AV_CH_TOP_BACK_RIGHT
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#define CH_STEREO_LEFT           AV_CH_STEREO_LEFT
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#define CH_STEREO_RIGHT          AV_CH_STEREO_RIGHT
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/** Channel mask value used for AVCodecContext.request_channel_layout
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    to indicate that the user requests the channel order of the decoder output
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    to be the native codec channel order. */
467
#define CH_LAYOUT_NATIVE         AV_CH_LAYOUT_NATIVE
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/* Audio channel convenience macros */
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#define CH_LAYOUT_MONO           AV_CH_LAYOUT_MONO
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#define CH_LAYOUT_STEREO         AV_CH_LAYOUT_STEREO
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#define CH_LAYOUT_2_1            AV_CH_LAYOUT_2_1
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#define CH_LAYOUT_SURROUND       AV_CH_LAYOUT_SURROUND
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#define CH_LAYOUT_4POINT0        AV_CH_LAYOUT_4POINT0
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#define CH_LAYOUT_2_2            AV_CH_LAYOUT_2_2
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#define CH_LAYOUT_QUAD           AV_CH_LAYOUT_QUAD
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#define CH_LAYOUT_5POINT0        AV_CH_LAYOUT_5POINT0
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#define CH_LAYOUT_5POINT1        AV_CH_LAYOUT_5POINT1
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#define CH_LAYOUT_5POINT0_BACK   AV_CH_LAYOUT_5POINT0_BACK
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#define CH_LAYOUT_5POINT1_BACK   AV_CH_LAYOUT_5POINT1_BACK
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#define CH_LAYOUT_7POINT0        AV_CH_LAYOUT_7POINT0
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#define CH_LAYOUT_7POINT1        AV_CH_LAYOUT_7POINT1
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#define CH_LAYOUT_7POINT1_WIDE   AV_CH_LAYOUT_7POINT1_WIDE
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#define CH_LAYOUT_STEREO_DOWNMIX AV_CH_LAYOUT_STEREO_DOWNMIX
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#endif
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/* in bytes */
488
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
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490
/**
491
 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
492
 * This is mainly needed because some optimized bitstream readers read
493
 * 32 or 64 bit at once and could read over the end.<br>
494
 * Note: If the first 23 bits of the additional bytes are not 0, then damaged
495
 * MPEG bitstreams could cause overread and segfault.
496
 */
497
#define FF_INPUT_BUFFER_PADDING_SIZE 8
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499
/**
500
 * minimum encoding buffer size
501
 * Used to avoid some checks during header writing.
502
 */
503
#define FF_MIN_BUFFER_SIZE 16384
504

    
505

    
506
/**
507
 * motion estimation type.
508
 */
509
enum Motion_Est_ID {
510
    ME_ZERO = 1,    ///< no search, that is use 0,0 vector whenever one is needed
511
    ME_FULL,
512
    ME_LOG,
513
    ME_PHODS,
514
    ME_EPZS,        ///< enhanced predictive zonal search
515
    ME_X1,          ///< reserved for experiments
516
    ME_HEX,         ///< hexagon based search
517
    ME_UMH,         ///< uneven multi-hexagon search
518
    ME_ITER,        ///< iterative search
519
    ME_TESA,        ///< transformed exhaustive search algorithm
520
};
521

    
522
enum AVDiscard{
523
    /* We leave some space between them for extensions (drop some
524
     * keyframes for intra-only or drop just some bidir frames). */
525
    AVDISCARD_NONE   =-16, ///< discard nothing
526
    AVDISCARD_DEFAULT=  0, ///< discard useless packets like 0 size packets in avi
527
    AVDISCARD_NONREF =  8, ///< discard all non reference
528
    AVDISCARD_BIDIR  = 16, ///< discard all bidirectional frames
529
    AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
530
    AVDISCARD_ALL    = 48, ///< discard all
531
};
532

    
533
enum AVColorPrimaries{
534
    AVCOL_PRI_BT709      =1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
535
    AVCOL_PRI_UNSPECIFIED=2,
536
    AVCOL_PRI_BT470M     =4,
537
    AVCOL_PRI_BT470BG    =5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
538
    AVCOL_PRI_SMPTE170M  =6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
539
    AVCOL_PRI_SMPTE240M  =7, ///< functionally identical to above
540
    AVCOL_PRI_FILM       =8,
541
    AVCOL_PRI_NB           , ///< Not part of ABI
542
};
543

    
544
enum AVColorTransferCharacteristic{
545
    AVCOL_TRC_BT709      =1, ///< also ITU-R BT1361
546
    AVCOL_TRC_UNSPECIFIED=2,
547
    AVCOL_TRC_GAMMA22    =4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
548
    AVCOL_TRC_GAMMA28    =5, ///< also ITU-R BT470BG
549
    AVCOL_TRC_NB           , ///< Not part of ABI
550
};
551

    
552
enum AVColorSpace{
553
    AVCOL_SPC_RGB        =0,
554
    AVCOL_SPC_BT709      =1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
555
    AVCOL_SPC_UNSPECIFIED=2,
556
    AVCOL_SPC_FCC        =4,
557
    AVCOL_SPC_BT470BG    =5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601
558
    AVCOL_SPC_SMPTE170M  =6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above
559
    AVCOL_SPC_SMPTE240M  =7,
560
    AVCOL_SPC_NB           , ///< Not part of ABI
561
};
562

    
563
enum AVColorRange{
564
    AVCOL_RANGE_UNSPECIFIED=0,
565
    AVCOL_RANGE_MPEG       =1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges
566
    AVCOL_RANGE_JPEG       =2, ///< the normal     2^n-1   "JPEG" YUV ranges
567
    AVCOL_RANGE_NB           , ///< Not part of ABI
568
};
569

    
570
/**
571
 *  X   X      3 4 X      X are luma samples,
572
 *             1 2        1-6 are possible chroma positions
573
 *  X   X      5 6 X      0 is undefined/unknown position
574
 */
575
enum AVChromaLocation{
576
    AVCHROMA_LOC_UNSPECIFIED=0,
577
    AVCHROMA_LOC_LEFT       =1, ///< mpeg2/4, h264 default
578
    AVCHROMA_LOC_CENTER     =2, ///< mpeg1, jpeg, h263
579
    AVCHROMA_LOC_TOPLEFT    =3, ///< DV
580
    AVCHROMA_LOC_TOP        =4,
581
    AVCHROMA_LOC_BOTTOMLEFT =5,
582
    AVCHROMA_LOC_BOTTOM     =6,
583
    AVCHROMA_LOC_NB           , ///< Not part of ABI
584
};
585

    
586
/**
587
 * LPC analysis type
588
 */
589
enum AVLPCType {
590
    AV_LPC_TYPE_DEFAULT     = -1, ///< use the codec default LPC type
591
    AV_LPC_TYPE_NONE        =  0, ///< do not use LPC prediction or use all zero coefficients
592
    AV_LPC_TYPE_FIXED       =  1, ///< fixed LPC coefficients
593
    AV_LPC_TYPE_LEVINSON    =  2, ///< Levinson-Durbin recursion
594
    AV_LPC_TYPE_CHOLESKY    =  3, ///< Cholesky factorization
595
    AV_LPC_TYPE_NB              , ///< Not part of ABI
596
};
597

    
598
typedef struct RcOverride{
599
    int start_frame;
600
    int end_frame;
601
    int qscale; // If this is 0 then quality_factor will be used instead.
602
    float quality_factor;
603
} RcOverride;
604

    
605
#define FF_MAX_B_FRAMES 16
606

    
607
/* encoding support
608
   These flags can be passed in AVCodecContext.flags before initialization.
609
   Note: Not everything is supported yet.
610
*/
611

    
612
#define CODEC_FLAG_QSCALE 0x0002  ///< Use fixed qscale.
613
#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / advanced prediction for H.263.
614
#define CODEC_FLAG_QPEL   0x0010  ///< Use qpel MC.
615
#define CODEC_FLAG_GMC    0x0020  ///< Use GMC.
616
#define CODEC_FLAG_MV0    0x0040  ///< Always try a MB with MV=<0,0>.
617
#define CODEC_FLAG_PART   0x0080  ///< Use data partitioning.
618
/**
619
 * The parent program guarantees that the input for B-frames containing
620
 * streams is not written to for at least s->max_b_frames+1 frames, if
621
 * this is not set the input will be copied.
622
 */
623
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
624
#define CODEC_FLAG_PASS1           0x0200   ///< Use internal 2pass ratecontrol in first pass mode.
625
#define CODEC_FLAG_PASS2           0x0400   ///< Use internal 2pass ratecontrol in second pass mode.
626
#define CODEC_FLAG_EXTERN_HUFF     0x1000   ///< Use external Huffman table (for MJPEG).
627
#define CODEC_FLAG_GRAY            0x2000   ///< Only decode/encode grayscale.
628
#define CODEC_FLAG_EMU_EDGE        0x4000   ///< Don't draw edges.
629
#define CODEC_FLAG_PSNR            0x8000   ///< error[?] variables will be set during encoding.
630
#define CODEC_FLAG_TRUNCATED       0x00010000 /** Input bitstream might be truncated at a random
631
                                                  location instead of only at frame boundaries. */
632
#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< Normalize adaptive quantization.
633
#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< Use interlaced DCT.
634
#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< Force low delay.
635
#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< Use alternate scan.
636
#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< Place global headers in extradata instead of every keyframe.
637
#define CODEC_FLAG_BITEXACT       0x00800000 ///< Use only bitexact stuff (except (I)DCT).
638
/* Fx : Flag for h263+ extra options */
639
#define CODEC_FLAG_AC_PRED        0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction
640
#define CODEC_FLAG_H263P_UMV      0x02000000 ///< unlimited motion vector
641
#define CODEC_FLAG_CBP_RD         0x04000000 ///< Use rate distortion optimization for cbp.
642
#define CODEC_FLAG_QP_RD          0x08000000 ///< Use rate distortion optimization for qp selectioon.
643
#define CODEC_FLAG_H263P_AIV      0x00000008 ///< H.263 alternative inter VLC
644
#define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
645
#define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
646
#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
647
#define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
648
#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< Will reserve space for SVCD scan offset user data.
649
#define CODEC_FLAG_CLOSED_GOP     0x80000000
650
#define CODEC_FLAG2_FAST          0x00000001 ///< Allow non spec compliant speedup tricks.
651
#define CODEC_FLAG2_STRICT_GOP    0x00000002 ///< Strictly enforce GOP size.
652
#define CODEC_FLAG2_NO_OUTPUT     0x00000004 ///< Skip bitstream encoding.
653
#define CODEC_FLAG2_LOCAL_HEADER  0x00000008 ///< Place global headers at every keyframe instead of in extradata.
654
#define CODEC_FLAG2_BPYRAMID      0x00000010 ///< H.264 allow B-frames to be used as references.
655
#define CODEC_FLAG2_WPRED         0x00000020 ///< H.264 weighted biprediction for B-frames
656
#define CODEC_FLAG2_MIXED_REFS    0x00000040 ///< H.264 one reference per partition, as opposed to one reference per macroblock
657
#define CODEC_FLAG2_8X8DCT        0x00000080 ///< H.264 high profile 8x8 transform
658
#define CODEC_FLAG2_FASTPSKIP     0x00000100 ///< H.264 fast pskip
659
#define CODEC_FLAG2_AUD           0x00000200 ///< H.264 access unit delimiters
660
#define CODEC_FLAG2_BRDO          0x00000400 ///< B-frame rate-distortion optimization
661
#define CODEC_FLAG2_INTRA_VLC     0x00000800 ///< Use MPEG-2 intra VLC table.
662
#define CODEC_FLAG2_MEMC_ONLY     0x00001000 ///< Only do ME/MC (I frames -> ref, P frame -> ME+MC).
663
#define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format.
664
#define CODEC_FLAG2_SKIP_RD       0x00004000 ///< RD optimal MB level residual skipping
665
#define CODEC_FLAG2_CHUNKS        0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
666
#define CODEC_FLAG2_NON_LINEAR_QUANT 0x00010000 ///< Use MPEG-2 nonlinear quantizer.
667
#define CODEC_FLAG2_BIT_RESERVOIR 0x00020000 ///< Use a bit reservoir when encoding if possible
668
#define CODEC_FLAG2_MBTREE        0x00040000 ///< Use macroblock tree ratecontrol (x264 only)
669
#define CODEC_FLAG2_PSY           0x00080000 ///< Use psycho visual optimizations.
670
#define CODEC_FLAG2_SSIM          0x00100000 ///< Compute SSIM during encoding, error[] values are undefined.
671
#define CODEC_FLAG2_INTRA_REFRESH 0x00200000 ///< Use periodic insertion of intra blocks instead of keyframes.
672

    
673
/* Unsupported options :
674
 *              Syntax Arithmetic coding (SAC)
675
 *              Reference Picture Selection
676
 *              Independent Segment Decoding */
677
/* /Fx */
678
/* codec capabilities */
679

    
680
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< Decoder can use draw_horiz_band callback.
681
/**
682
 * Codec uses get_buffer() for allocating buffers and supports custom allocators.
683
 * If not set, it might not use get_buffer() at all or use operations that
684
 * assume the buffer was allocated by avcodec_default_get_buffer.
685
 */
686
#define CODEC_CAP_DR1             0x0002
687
/* If 'parse_only' field is true, then avcodec_parse_frame() can be used. */
688
#define CODEC_CAP_PARSE_ONLY      0x0004
689
#define CODEC_CAP_TRUNCATED       0x0008
690
/* Codec can export data for HW decoding (XvMC). */
691
#define CODEC_CAP_HWACCEL         0x0010
692
/**
693
 * Codec has a nonzero delay and needs to be fed with NULL at the end to get the delayed data.
694
 * If this is not set, the codec is guaranteed to never be fed with NULL data.
695
 */
696
#define CODEC_CAP_DELAY           0x0020
697
/**
698
 * Codec can be fed a final frame with a smaller size.
699
 * This can be used to prevent truncation of the last audio samples.
700
 */
701
#define CODEC_CAP_SMALL_LAST_FRAME 0x0040
702
/**
703
 * Codec can export data for HW decoding (VDPAU).
704
 */
705
#define CODEC_CAP_HWACCEL_VDPAU    0x0080
706
/**
707
 * Codec can output multiple frames per AVPacket
708
 * Normally demuxers return one frame at a time, demuxers which do not do
709
 * are connected to a parser to split what they return into proper frames.
710
 * This flag is reserved to the very rare category of codecs which have a
711
 * bitstream that cannot be split into frames without timeconsuming
712
 * operations like full decoding. Demuxers carring such bitstreams thus
713
 * may return multiple frames in a packet. This has many disadvantages like
714
 * prohibiting stream copy in many cases thus it should only be considered
715
 * as a last resort.
716
 */
717
#define CODEC_CAP_SUBFRAMES        0x0100
718
/**
719
 * Codec is experimental and is thus avoided in favor of non experimental
720
 * encoders
721
 */
722
#define CODEC_CAP_EXPERIMENTAL     0x0200
723
/**
724
 * Codec should fill in channel configuration and samplerate instead of container
725
 */
726
#define CODEC_CAP_CHANNEL_CONF     0x0400
727
/**
728
 * Codec is able to deal with negative linesizes
729
 */
730
#define CODEC_CAP_NEG_LINESIZES    0x0800
731
/**
732
 * Codec supports frame-level multithreading.
733
 */
734
#define CODEC_CAP_FRAME_THREADS    0x1000
735

    
736
//The following defines may change, don't expect compatibility if you use them.
737
#define MB_TYPE_INTRA4x4   0x0001
738
#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific
739
#define MB_TYPE_INTRA_PCM  0x0004 //FIXME H.264-specific
740
#define MB_TYPE_16x16      0x0008
741
#define MB_TYPE_16x8       0x0010
742
#define MB_TYPE_8x16       0x0020
743
#define MB_TYPE_8x8        0x0040
744
#define MB_TYPE_INTERLACED 0x0080
745
#define MB_TYPE_DIRECT2    0x0100 //FIXME
746
#define MB_TYPE_ACPRED     0x0200
747
#define MB_TYPE_GMC        0x0400
748
#define MB_TYPE_SKIP       0x0800
749
#define MB_TYPE_P0L0       0x1000
750
#define MB_TYPE_P1L0       0x2000
751
#define MB_TYPE_P0L1       0x4000
752
#define MB_TYPE_P1L1       0x8000
753
#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
754
#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
755
#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
756
#define MB_TYPE_QUANT      0x00010000
757
#define MB_TYPE_CBP        0x00020000
758
//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
759

    
760
/**
761
 * Pan Scan area.
762
 * This specifies the area which should be displayed.
763
 * Note there may be multiple such areas for one frame.
764
 */
765
typedef struct AVPanScan{
766
    /**
767
     * id
768
     * - encoding: Set by user.
769
     * - decoding: Set by libavcodec.
770
     */
771
    int id;
772

    
773
    /**
774
     * width and height in 1/16 pel
775
     * - encoding: Set by user.
776
     * - decoding: Set by libavcodec.
777
     */
778
    int width;
779
    int height;
780

    
781
    /**
782
     * position of the top left corner in 1/16 pel for up to 3 fields/frames
783
     * - encoding: Set by user.
784
     * - decoding: Set by libavcodec.
785
     */
786
    int16_t position[3][2];
787
}AVPanScan;
788

    
789
#define FF_COMMON_FRAME \
790
    /**\
791
     * pointer to the picture planes.\
792
     * This might be different from the first allocated byte\
793
     * - encoding: \
794
     * - decoding: \
795
     */\
796
    uint8_t *data[4];\
797
    int linesize[4];\
798
    /**\
799
     * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.\
800
     * This isn't used by libavcodec unless the default get/release_buffer() is used.\
801
     * - encoding: \
802
     * - decoding: \
803
     */\
804
    uint8_t *base[4];\
805
    /**\
806
     * 1 -> keyframe, 0-> not\
807
     * - encoding: Set by libavcodec.\
808
     * - decoding: Set by libavcodec.\
809
     */\
810
    int key_frame;\
811
\
812
    /**\
813
     * Picture type of the frame, see ?_TYPE below.\
814
     * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
815
     * - decoding: Set by libavcodec.\
816
     */\
817
    int pict_type;\
818
\
819
    /**\
820
     * presentation timestamp in time_base units (time when frame should be shown to user)\
821
     * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.\
822
     * - encoding: MUST be set by user.\
823
     * - decoding: Set by libavcodec.\
824
     */\
825
    int64_t pts;\
826
\
827
    /**\
828
     * picture number in bitstream order\
829
     * - encoding: set by\
830
     * - decoding: Set by libavcodec.\
831
     */\
832
    int coded_picture_number;\
833
    /**\
834
     * picture number in display order\
835
     * - encoding: set by\
836
     * - decoding: Set by libavcodec.\
837
     */\
838
    int display_picture_number;\
839
\
840
    /**\
841
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
842
     * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
843
     * - decoding: Set by libavcodec.\
844
     */\
845
    int quality; \
846
\
847
    /**\
848
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
849
     * Set to INT_MAX if the buffer has not been used yet.\
850
     * - encoding: unused\
851
     * - decoding: MUST be set by get_buffer().\
852
     */\
853
    int age;\
854
\
855
    /**\
856
     * is this picture used as reference\
857
     * The values for this are the same as the MpegEncContext.picture_structure\
858
     * variable, that is 1->top field, 2->bottom field, 3->frame/both fields.\
859
     * Set to 4 for delayed, non-reference frames.\
860
     * - encoding: unused\
861
     * - decoding: Set by libavcodec. (before get_buffer() call)).\
862
     */\
863
    int reference;\
864
\
865
    /**\
866
     * QP table\
867
     * - encoding: unused\
868
     * - decoding: Set by libavcodec.\
869
     */\
870
    int8_t *qscale_table;\
871
    /**\
872
     * QP store stride\
873
     * - encoding: unused\
874
     * - decoding: Set by libavcodec.\
875
     */\
876
    int qstride;\
877
\
878
    /**\
879
     * mbskip_table[mb]>=1 if MB didn't change\
880
     * stride= mb_width = (width+15)>>4\
881
     * - encoding: unused\
882
     * - decoding: Set by libavcodec.\
883
     */\
884
    uint8_t *mbskip_table;\
885
\
886
    /**\
887
     * motion vector table\
888
     * @code\
889
     * example:\
890
     * int mv_sample_log2= 4 - motion_subsample_log2;\
891
     * int mb_width= (width+15)>>4;\
892
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
893
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
894
     * @endcode\
895
     * - encoding: Set by user.\
896
     * - decoding: Set by libavcodec.\
897
     */\
898
    int16_t (*motion_val[2])[2];\
899
\
900
    /**\
901
     * macroblock type table\
902
     * mb_type_base + mb_width + 2\
903
     * - encoding: Set by user.\
904
     * - decoding: Set by libavcodec.\
905
     */\
906
    uint32_t *mb_type;\
907
\
908
    /**\
909
     * log2 of the size of the block which a single vector in motion_val represents: \
910
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
911
     * - encoding: unused\
912
     * - decoding: Set by libavcodec.\
913
     */\
914
    uint8_t motion_subsample_log2;\
915
\
916
    /**\
917
     * for some private data of the user\
918
     * - encoding: unused\
919
     * - decoding: Set by user.\
920
     */\
921
    void *opaque;\
922
\
923
    /**\
924
     * error\
925
     * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.\
926
     * - decoding: unused\
927
     */\
928
    uint64_t error[4];\
929
\
930
    /**\
931
     * type of the buffer (to keep track of who has to deallocate data[*])\
932
     * - encoding: Set by the one who allocates it.\
933
     * - decoding: Set by the one who allocates it.\
934
     * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.\
935
     */\
936
    int type;\
937
    \
938
    /**\
939
     * When decoding, this signals how much the picture must be delayed.\
940
     * extra_delay = repeat_pict / (2*fps)\
941
     * - encoding: unused\
942
     * - decoding: Set by libavcodec.\
943
     */\
944
    int repeat_pict;\
945
    \
946
    /**\
947
     * \
948
     */\
949
    int qscale_type;\
950
    \
951
    /**\
952
     * The content of the picture is interlaced.\
953
     * - encoding: Set by user.\
954
     * - decoding: Set by libavcodec. (default 0)\
955
     */\
956
    int interlaced_frame;\
957
    \
958
    /**\
959
     * If the content is interlaced, is top field displayed first.\
960
     * - encoding: Set by user.\
961
     * - decoding: Set by libavcodec.\
962
     */\
963
    int top_field_first;\
964
    \
965
    /**\
966
     * Pan scan.\
967
     * - encoding: Set by user.\
968
     * - decoding: Set by libavcodec.\
969
     */\
970
    AVPanScan *pan_scan;\
971
    \
972
    /**\
973
     * Tell user application that palette has changed from previous frame.\
974
     * - encoding: ??? (no palette-enabled encoder yet)\
975
     * - decoding: Set by libavcodec. (default 0).\
976
     */\
977
    int palette_has_changed;\
978
    \
979
    /**\
980
     * codec suggestion on buffer type if != 0\
981
     * - encoding: unused\
982
     * - decoding: Set by libavcodec. (before get_buffer() call)).\
983
     */\
984
    int buffer_hints;\
985
\
986
    /**\
987
     * DCT coefficients\
988
     * - encoding: unused\
989
     * - decoding: Set by libavcodec.\
990
     */\
991
    short *dct_coeff;\
992
\
993
    /**\
994
     * motion reference frame index\
995
     * the order in which these are stored can depend on the codec.\
996
     * - encoding: Set by user.\
997
     * - decoding: Set by libavcodec.\
998
     */\
999
    int8_t *ref_index[2];\
1000
\
1001
    /**\
1002
     * reordered opaque 64bit (generally an integer or a double precision float\
1003
     * PTS but can be anything). \
1004
     * The user sets AVCodecContext.reordered_opaque to represent the input at\
1005
     * that time,\
1006
     * the decoder reorders values as needed and sets AVFrame.reordered_opaque\
1007
     * to exactly one of the values provided by the user through AVCodecContext.reordered_opaque \
1008
     * @deprecated in favor of pkt_pts\
1009
     * - encoding: unused\
1010
     * - decoding: Read by user.\
1011
     */\
1012
    int64_t reordered_opaque;\
1013
\
1014
    /**\
1015
     * hardware accelerator private data (FFmpeg allocated)\
1016
     * - encoding: unused\
1017
     * - decoding: Set by libavcodec\
1018
     */\
1019
    void *hwaccel_picture_private;\
1020
\
1021
    /**\
1022
     * reordered pts from the last AVPacket that has been input into the decoder\
1023
     * - encoding: unused\
1024
     * - decoding: Read by user.\
1025
     */\
1026
    int64_t pkt_pts;\
1027
\
1028
    /**\
1029
     * dts from the last AVPacket that has been input into the decoder\
1030
     * - encoding: unused\
1031
     * - decoding: Read by user.\
1032
     */\
1033
    int64_t pkt_dts;\
1034
\
1035
    /**\
1036
     * the AVCodecContext which ff_thread_get_buffer() was last called on\
1037
     * - encoding: Set by libavcodec.\
1038
     * - decoding: Set by libavcodec.\
1039
     */\
1040
    struct AVCodecContext *owner;\
1041
\
1042
    /**\
1043
     * used by multithreading to store frame-specific info\
1044
     * - encoding: Set by libavcodec.\
1045
     * - decoding: Set by libavcodec.\
1046
     */\
1047
    void *thread_opaque;\
1048
\
1049
    /**\
1050
     * frame timestamp estimated using various heuristics, in stream time base\
1051
     * - encoding: unused\
1052
     * - decoding: set by libavcodec, read by user.\
1053
     */\
1054
    int64_t best_effort_timestamp;\
1055

    
1056

    
1057
#define FF_QSCALE_TYPE_MPEG1 0
1058
#define FF_QSCALE_TYPE_MPEG2 1
1059
#define FF_QSCALE_TYPE_H264  2
1060
#define FF_QSCALE_TYPE_VP56  3
1061

    
1062
#define FF_BUFFER_TYPE_INTERNAL 1
1063
#define FF_BUFFER_TYPE_USER     2 ///< direct rendering buffers (image is (de)allocated by user)
1064
#define FF_BUFFER_TYPE_SHARED   4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared.
1065
#define FF_BUFFER_TYPE_COPY     8 ///< Just a (modified) copy of some other buffer, don't deallocate anything.
1066

    
1067

    
1068
#define FF_I_TYPE  1 ///< Intra
1069
#define FF_P_TYPE  2 ///< Predicted
1070
#define FF_B_TYPE  3 ///< Bi-dir predicted
1071
#define FF_S_TYPE  4 ///< S(GMC)-VOP MPEG4
1072
#define FF_SI_TYPE 5 ///< Switching Intra
1073
#define FF_SP_TYPE 6 ///< Switching Predicted
1074
#define FF_BI_TYPE 7
1075

    
1076
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore).
1077
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer.
1078
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content.
1079
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update).
1080

    
1081
typedef struct AVPacket {
1082
    /**
1083
     * Presentation timestamp in AVStream->time_base units; the time at which
1084
     * the decompressed packet will be presented to the user.
1085
     * Can be AV_NOPTS_VALUE if it is not stored in the file.
1086
     * pts MUST be larger or equal to dts as presentation cannot happen before
1087
     * decompression, unless one wants to view hex dumps. Some formats misuse
1088
     * the terms dts and pts/cts to mean something different. Such timestamps
1089
     * must be converted to true pts/dts before they are stored in AVPacket.
1090
     */
1091
    int64_t pts;
1092
    /**
1093
     * Decompression timestamp in AVStream->time_base units; the time at which
1094
     * the packet is decompressed.
1095
     * Can be AV_NOPTS_VALUE if it is not stored in the file.
1096
     */
1097
    int64_t dts;
1098
    uint8_t *data;
1099
    int   size;
1100
    int   stream_index;
1101
    int   flags;
1102
    /**
1103
     * Duration of this packet in AVStream->time_base units, 0 if unknown.
1104
     * Equals next_pts - this_pts in presentation order.
1105
     */
1106
    int   duration;
1107
    void  (*destruct)(struct AVPacket *);
1108
    void  *priv;
1109
    int64_t pos;                            ///< byte position in stream, -1 if unknown
1110

    
1111
    /**
1112
     * Time difference in AVStream->time_base units from the pts of this
1113
     * packet to the point at which the output from the decoder has converged
1114
     * independent from the availability of previous frames. That is, the
1115
     * frames are virtually identical no matter if decoding started from
1116
     * the very first frame or from this keyframe.
1117
     * Is AV_NOPTS_VALUE if unknown.
1118
     * This field is not the display duration of the current packet.
1119
     * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY
1120
     * set.
1121
     *
1122
     * The purpose of this field is to allow seeking in streams that have no
1123
     * keyframes in the conventional sense. It corresponds to the
1124
     * recovery point SEI in H.264 and match_time_delta in NUT. It is also
1125
     * essential for some types of subtitle streams to ensure that all
1126
     * subtitles are correctly displayed after seeking.
1127
     */
1128
    int64_t convergence_duration;
1129
} AVPacket;
1130
#define AV_PKT_FLAG_KEY   0x0001
1131
#if LIBAVCODEC_VERSION_MAJOR < 53
1132
#define PKT_FLAG_KEY AV_PKT_FLAG_KEY
1133
#endif
1134

    
1135
/**
1136
 * Audio Video Frame.
1137
 * New fields can be added to the end of FF_COMMON_FRAME with minor version
1138
 * bumps.
1139
 * Removal, reordering and changes to existing fields require a major
1140
 * version bump. No fields should be added into AVFrame before or after
1141
 * FF_COMMON_FRAME!
1142
 * sizeof(AVFrame) must not be used outside libav*.
1143
 */
1144
typedef struct AVFrame {
1145
    FF_COMMON_FRAME
1146
} AVFrame;
1147

    
1148
/**
1149
 * main external API structure.
1150
 * New fields can be added to the end with minor version bumps.
1151
 * Removal, reordering and changes to existing fields require a major
1152
 * version bump.
1153
 * sizeof(AVCodecContext) must not be used outside libav*.
1154
 */
1155
typedef struct AVCodecContext {
1156
    /**
1157
     * information on struct for av_log
1158
     * - set by avcodec_alloc_context
1159
     */
1160
    const AVClass *av_class;
1161
    /**
1162
     * the average bitrate
1163
     * - encoding: Set by user; unused for constant quantizer encoding.
1164
     * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
1165
     */
1166
    int bit_rate;
1167

    
1168
    /**
1169
     * number of bits the bitstream is allowed to diverge from the reference.
1170
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
1171
     * - encoding: Set by user; unused for constant quantizer encoding.
1172
     * - decoding: unused
1173
     */
1174
    int bit_rate_tolerance;
1175

    
1176
    /**
1177
     * CODEC_FLAG_*.
1178
     * - encoding: Set by user.
1179
     * - decoding: Set by user.
1180
     */
1181
    int flags;
1182

    
1183
    /**
1184
     * Some codecs need additional format info. It is stored here.
1185
     * If any muxer uses this then ALL demuxers/parsers AND encoders for the
1186
     * specific codec MUST set it correctly otherwise stream copy breaks.
1187
     * In general use of this field by muxers is not recommanded.
1188
     * - encoding: Set by libavcodec.
1189
     * - decoding: Set by libavcodec. (FIXME: Is this OK?)
1190
     */
1191
    int sub_id;
1192

    
1193
    /**
1194
     * Motion estimation algorithm used for video coding.
1195
     * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
1196
     * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific]
1197
     * - encoding: MUST be set by user.
1198
     * - decoding: unused
1199
     */
1200
    int me_method;
1201

    
1202
    /**
1203
     * some codecs need / can use extradata like Huffman tables.
1204
     * mjpeg: Huffman tables
1205
     * rv10: additional flags
1206
     * mpeg4: global headers (they can be in the bitstream or here)
1207
     * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
1208
     * than extradata_size to avoid prolems if it is read with the bitstream reader.
1209
     * The bytewise contents of extradata must not depend on the architecture or CPU endianness.
1210
     * - encoding: Set/allocated/freed by libavcodec.
1211
     * - decoding: Set/allocated/freed by user.
1212
     */
1213
    uint8_t *extradata;
1214
    int extradata_size;
1215

    
1216
    /**
1217
     * This is the fundamental unit of time (in seconds) in terms
1218
     * of which frame timestamps are represented. For fixed-fps content,
1219
     * timebase should be 1/framerate and timestamp increments should be
1220
     * identically 1.
1221
     * - encoding: MUST be set by user.
1222
     * - decoding: Set by libavcodec.
1223
     */
1224
    AVRational time_base;
1225

    
1226
    /* video only */
1227
    /**
1228
     * picture width / height.
1229
     * - encoding: MUST be set by user.
1230
     * - decoding: Set by libavcodec.
1231
     * Note: For compatibility it is possible to set this instead of
1232
     * coded_width/height before decoding.
1233
     */
1234
    int width, height;
1235

    
1236
#define FF_ASPECT_EXTENDED 15
1237

    
1238
    /**
1239
     * the number of pictures in a group of pictures, or 0 for intra_only
1240
     * - encoding: Set by user.
1241
     * - decoding: unused
1242
     */
1243
    int gop_size;
1244

    
1245
    /**
1246
     * Pixel format, see PIX_FMT_xxx.
1247
     * May be set by the demuxer if known from headers.
1248
     * May be overriden by the decoder if it knows better.
1249
     * - encoding: Set by user.
1250
     * - decoding: Set by user if known, overridden by libavcodec if known
1251
     */
1252
    enum PixelFormat pix_fmt;
1253

    
1254
    /**
1255
     * Frame rate emulation. If not zero, the lower layer (i.e. format handler)
1256
     * has to read frames at native frame rate.
1257
     * - encoding: Set by user.
1258
     * - decoding: unused
1259
     */
1260
    int rate_emu;
1261

    
1262
    /**
1263
     * If non NULL, 'draw_horiz_band' is called by the libavcodec
1264
     * decoder to draw a horizontal band. It improves cache usage. Not
1265
     * all codecs can do that. You must check the codec capabilities
1266
     * beforehand.
1267
     * When multithreading is used, it may be called from multiple threads
1268
     * at the same time; threads might draw different parts of the same AVFrame,
1269
     * or multiple AVFrames, and there is no guarantee that slices will be drawn
1270
     * in order.
1271
     * The function is also used by hardware acceleration APIs.
1272
     * It is called at least once during frame decoding to pass
1273
     * the data needed for hardware render.
1274
     * In that mode instead of pixel data, AVFrame points to
1275
     * a structure specific to the acceleration API. The application
1276
     * reads the structure and can change some fields to indicate progress
1277
     * or mark state.
1278
     * - encoding: unused
1279
     * - decoding: Set by user.
1280
     * @param height the height of the slice
1281
     * @param y the y position of the slice
1282
     * @param type 1->top field, 2->bottom field, 3->frame
1283
     * @param offset offset into the AVFrame.data from which the slice should be read
1284
     */
1285
    void (*draw_horiz_band)(struct AVCodecContext *s,
1286
                            const AVFrame *src, int offset[4],
1287
                            int y, int type, int height);
1288

    
1289
    /* audio only */
1290
    int sample_rate; ///< samples per second
1291
    int channels;    ///< number of audio channels
1292

    
1293
    /**
1294
     * audio sample format
1295
     * - encoding: Set by user.
1296
     * - decoding: Set by libavcodec.
1297
     */
1298
    enum AVSampleFormat sample_fmt;  ///< sample format
1299

    
1300
    /* The following data should not be initialized. */
1301
    /**
1302
     * Samples per packet, initialized when calling 'init'.
1303
     */
1304
    int frame_size;
1305
    int frame_number;   ///< audio or video frame number
1306
#if LIBAVCODEC_VERSION_MAJOR < 53
1307
    int real_pict_num;  ///< Returns the real picture number of previous encoded frame.
1308
#endif
1309

    
1310
    /**
1311
     * Number of frames the decoded output will be delayed relative to
1312
     * the encoded input.
1313
     * - encoding: Set by libavcodec.
1314
     * - decoding: unused
1315
     */
1316
    int delay;
1317

    
1318
    /* - encoding parameters */
1319
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
1320
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
1321

    
1322
    /**
1323
     * minimum quantizer
1324
     * - encoding: Set by user.
1325
     * - decoding: unused
1326
     */
1327
    int qmin;
1328

    
1329
    /**
1330
     * maximum quantizer
1331
     * - encoding: Set by user.
1332
     * - decoding: unused
1333
     */
1334
    int qmax;
1335

    
1336
    /**
1337
     * maximum quantizer difference between frames
1338
     * - encoding: Set by user.
1339
     * - decoding: unused
1340
     */
1341
    int max_qdiff;
1342

    
1343
    /**
1344
     * maximum number of B-frames between non-B-frames
1345
     * Note: The output will be delayed by max_b_frames+1 relative to the input.
1346
     * - encoding: Set by user.
1347
     * - decoding: unused
1348
     */
1349
    int max_b_frames;
1350

    
1351
    /**
1352
     * qscale factor between IP and B-frames
1353
     * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
1354
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1355
     * - encoding: Set by user.
1356
     * - decoding: unused
1357
     */
1358
    float b_quant_factor;
1359

    
1360
    /** obsolete FIXME remove */
1361
    int rc_strategy;
1362
#define FF_RC_STRATEGY_XVID 1
1363

    
1364
    int b_frame_strategy;
1365

    
1366
    /**
1367
     * hurry up amount
1368
     * - encoding: unused
1369
     * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header
1370
     * @deprecated Deprecated in favor of skip_idct and skip_frame.
1371
     */
1372
    int hurry_up;
1373

    
1374
    struct AVCodec *codec;
1375

    
1376
    void *priv_data;
1377

    
1378
    int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
1379
                            /* do its best to deliver a chunk with size     */
1380
                            /* below rtp_payload_size, the chunk will start */
1381
                            /* with a start code on some codecs like H.263. */
1382
                            /* This doesn't take account of any particular  */
1383
                            /* headers inside the transmitted RTP payload.  */
1384

    
1385

    
1386
    /* The RTP callback: This function is called    */
1387
    /* every time the encoder has a packet to send. */
1388
    /* It depends on the encoder if the data starts */
1389
    /* with a Start Code (it should). H.263 does.   */
1390
    /* mb_nb contains the number of macroblocks     */
1391
    /* encoded in the RTP payload.                  */
1392
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
1393

    
1394
    /* statistics, used for 2-pass encoding */
1395
    int mv_bits;
1396
    int header_bits;
1397
    int i_tex_bits;
1398
    int p_tex_bits;
1399
    int i_count;
1400
    int p_count;
1401
    int skip_count;
1402
    int misc_bits;
1403

    
1404
    /**
1405
     * number of bits used for the previously encoded frame
1406
     * - encoding: Set by libavcodec.
1407
     * - decoding: unused
1408
     */
1409
    int frame_bits;
1410

    
1411
    /**
1412
     * Private data of the user, can be used to carry app specific stuff.
1413
     * - encoding: Set by user.
1414
     * - decoding: Set by user.
1415
     */
1416
    void *opaque;
1417

    
1418
    char codec_name[32];
1419
    enum AVMediaType codec_type; /* see AVMEDIA_TYPE_xxx */
1420
    enum CodecID codec_id; /* see CODEC_ID_xxx */
1421

    
1422
    /**
1423
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1424
     * This is used to work around some encoder bugs.
1425
     * A demuxer should set this to what is stored in the field used to identify the codec.
1426
     * If there are multiple such fields in a container then the demuxer should choose the one
1427
     * which maximizes the information about the used codec.
1428
     * If the codec tag field in a container is larger then 32 bits then the demuxer should
1429
     * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
1430
     * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
1431
     * first.
1432
     * - encoding: Set by user, if not then the default based on codec_id will be used.
1433
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
1434
     */
1435
    unsigned int codec_tag;
1436

    
1437
    /**
1438
     * Work around bugs in encoders which sometimes cannot be detected automatically.
1439
     * - encoding: Set by user
1440
     * - decoding: Set by user
1441
     */
1442
    int workaround_bugs;
1443
#define FF_BUG_AUTODETECT       1  ///< autodetection
1444
#define FF_BUG_OLD_MSMPEG4      2
1445
#define FF_BUG_XVID_ILACE       4
1446
#define FF_BUG_UMP4             8
1447
#define FF_BUG_NO_PADDING       16
1448
#define FF_BUG_AMV              32
1449
#define FF_BUG_AC_VLC           0  ///< Will be removed, libavcodec can now handle these non-compliant files by default.
1450
#define FF_BUG_QPEL_CHROMA      64
1451
#define FF_BUG_STD_QPEL         128
1452
#define FF_BUG_QPEL_CHROMA2     256
1453
#define FF_BUG_DIRECT_BLOCKSIZE 512
1454
#define FF_BUG_EDGE             1024
1455
#define FF_BUG_HPEL_CHROMA      2048
1456
#define FF_BUG_DC_CLIP          4096
1457
#define FF_BUG_MS               8192 ///< Work around various bugs in Microsoft's broken decoders.
1458
#define FF_BUG_TRUNCATED       16384
1459
//#define FF_BUG_FAKE_SCALABILITY 16 //Autodetection should work 100%.
1460

    
1461
    /**
1462
     * luma single coefficient elimination threshold
1463
     * - encoding: Set by user.
1464
     * - decoding: unused
1465
     */
1466
    int luma_elim_threshold;
1467

    
1468
    /**
1469
     * chroma single coeff elimination threshold
1470
     * - encoding: Set by user.
1471
     * - decoding: unused
1472
     */
1473
    int chroma_elim_threshold;
1474

    
1475
    /**
1476
     * strictly follow the standard (MPEG4, ...).
1477
     * - encoding: Set by user.
1478
     * - decoding: Set by user.
1479
     * Setting this to STRICT or higher means the encoder and decoder will
1480
     * generally do stupid things, whereas setting it to unofficial or lower
1481
     * will mean the encoder might produce output that is not supported by all
1482
     * spec-compliant decoders. Decoders don't differentiate between normal,
1483
     * unofficial and experimental (that is, they always try to decode things
1484
     * when they can) unless they are explicitly asked to behave stupidly
1485
     * (=strictly conform to the specs)
1486
     */
1487
    int strict_std_compliance;
1488
#define FF_COMPLIANCE_VERY_STRICT   2 ///< Strictly conform to an older more strict version of the spec or reference software.
1489
#define FF_COMPLIANCE_STRICT        1 ///< Strictly conform to all the things in the spec no matter what consequences.
1490
#define FF_COMPLIANCE_NORMAL        0
1491
#if FF_API_INOFFICIAL
1492
#define FF_COMPLIANCE_INOFFICIAL   -1 ///< Allow inofficial extensions (deprecated - use FF_COMPLIANCE_UNOFFICIAL instead).
1493
#endif
1494
#define FF_COMPLIANCE_UNOFFICIAL   -1 ///< Allow unofficial extensions
1495
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things.
1496

    
1497
    /**
1498
     * qscale offset between IP and B-frames
1499
     * - encoding: Set by user.
1500
     * - decoding: unused
1501
     */
1502
    float b_quant_offset;
1503

    
1504
    /**
1505
     * Error recognization; higher values will detect more errors but may
1506
     * misdetect some more or less valid parts as errors.
1507
     * - encoding: unused
1508
     * - decoding: Set by user.
1509
     */
1510
    int error_recognition;
1511
#define FF_ER_CAREFUL         1
1512
#define FF_ER_COMPLIANT       2
1513
#define FF_ER_AGGRESSIVE      3
1514
#define FF_ER_VERY_AGGRESSIVE 4
1515

    
1516
    /**
1517
     * Called at the beginning of each frame to get a buffer for it.
1518
     * If pic.reference is set then the frame will be read later by libavcodec.
1519
     * avcodec_align_dimensions2() should be used to find the required width and
1520
     * height, as they normally need to be rounded up to the next multiple of 16.
1521
     * if CODEC_CAP_DR1 is not set then get_buffer() must call
1522
     * avcodec_default_get_buffer() instead of providing buffers allocated by
1523
     * some other means.
1524
     * If frame multithreading is used and thread_safe_callbacks is set,
1525
     * it may be called from a different thread, but not from more than one at once.
1526
     * Does not need to be reentrant.
1527
     * - encoding: unused
1528
     * - decoding: Set by libavcodec, user can override.
1529
     */
1530
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1531

    
1532
    /**
1533
     * Called to release buffers which were allocated with get_buffer.
1534
     * A released buffer can be reused in get_buffer().
1535
     * pic.data[*] must be set to NULL.
1536
     * May be called from a different thread if frame multithreading is used,
1537
     * but not by more than one thread at once, so does not need to be reentrant.
1538
     * - encoding: unused
1539
     * - decoding: Set by libavcodec, user can override.
1540
     */
1541
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1542

    
1543
    /**
1544
     * Size of the frame reordering buffer in the decoder.
1545
     * For MPEG-2 it is 1 IPB or 0 low delay IP.
1546
     * - encoding: Set by libavcodec.
1547
     * - decoding: Set by libavcodec.
1548
     */
1549
    int has_b_frames;
1550

    
1551
    /**
1552
     * number of bytes per packet if constant and known or 0
1553
     * Used by some WAV based audio codecs.
1554
     */
1555
    int block_align;
1556

    
1557
    int parse_only; /* - decoding only: If true, only parsing is done
1558
                       (function avcodec_parse_frame()). The frame
1559
                       data is returned. Only MPEG codecs support this now. */
1560

    
1561
    /**
1562
     * 0-> h263 quant 1-> mpeg quant
1563
     * - encoding: Set by user.
1564
     * - decoding: unused
1565
     */
1566
    int mpeg_quant;
1567

    
1568
    /**
1569
     * pass1 encoding statistics output buffer
1570
     * - encoding: Set by libavcodec.
1571
     * - decoding: unused
1572
     */
1573
    char *stats_out;
1574

    
1575
    /**
1576
     * pass2 encoding statistics input buffer
1577
     * Concatenated stuff from stats_out of pass1 should be placed here.
1578
     * - encoding: Allocated/set/freed by user.
1579
     * - decoding: unused
1580
     */
1581
    char *stats_in;
1582

    
1583
    /**
1584
     * ratecontrol qmin qmax limiting method
1585
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
1586
     * - encoding: Set by user.
1587
     * - decoding: unused
1588
     */
1589
    float rc_qsquish;
1590

    
1591
    float rc_qmod_amp;
1592
    int rc_qmod_freq;
1593

    
1594
    /**
1595
     * ratecontrol override, see RcOverride
1596
     * - encoding: Allocated/set/freed by user.
1597
     * - decoding: unused
1598
     */
1599
    RcOverride *rc_override;
1600
    int rc_override_count;
1601

    
1602
    /**
1603
     * rate control equation
1604
     * - encoding: Set by user
1605
     * - decoding: unused
1606
     */
1607
    const char *rc_eq;
1608

    
1609
    /**
1610
     * maximum bitrate
1611
     * - encoding: Set by user.
1612
     * - decoding: unused
1613
     */
1614
    int rc_max_rate;
1615

    
1616
    /**
1617
     * minimum bitrate
1618
     * - encoding: Set by user.
1619
     * - decoding: unused
1620
     */
1621
    int rc_min_rate;
1622

    
1623
    /**
1624
     * decoder bitstream buffer size
1625
     * - encoding: Set by user.
1626
     * - decoding: unused
1627
     */
1628
    int rc_buffer_size;
1629
    float rc_buffer_aggressivity;
1630

    
1631
    /**
1632
     * qscale factor between P and I-frames
1633
     * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
1634
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1635
     * - encoding: Set by user.
1636
     * - decoding: unused
1637
     */
1638
    float i_quant_factor;
1639

    
1640
    /**
1641
     * qscale offset between P and I-frames
1642
     * - encoding: Set by user.
1643
     * - decoding: unused
1644
     */
1645
    float i_quant_offset;
1646

    
1647
    /**
1648
     * initial complexity for pass1 ratecontrol
1649
     * - encoding: Set by user.
1650
     * - decoding: unused
1651
     */
1652
    float rc_initial_cplx;
1653

    
1654
    /**
1655
     * DCT algorithm, see FF_DCT_* below
1656
     * - encoding: Set by user.
1657
     * - decoding: unused
1658
     */
1659
    int dct_algo;
1660
#define FF_DCT_AUTO    0
1661
#define FF_DCT_FASTINT 1
1662
#define FF_DCT_INT     2
1663
#define FF_DCT_MMX     3
1664
#define FF_DCT_MLIB    4
1665
#define FF_DCT_ALTIVEC 5
1666
#define FF_DCT_FAAN    6
1667

    
1668
    /**
1669
     * luminance masking (0-> disabled)
1670
     * - encoding: Set by user.
1671
     * - decoding: unused
1672
     */
1673
    float lumi_masking;
1674

    
1675
    /**
1676
     * temporary complexity masking (0-> disabled)
1677
     * - encoding: Set by user.
1678
     * - decoding: unused
1679
     */
1680
    float temporal_cplx_masking;
1681

    
1682
    /**
1683
     * spatial complexity masking (0-> disabled)
1684
     * - encoding: Set by user.
1685
     * - decoding: unused
1686
     */
1687
    float spatial_cplx_masking;
1688

    
1689
    /**
1690
     * p block masking (0-> disabled)
1691
     * - encoding: Set by user.
1692
     * - decoding: unused
1693
     */
1694
    float p_masking;
1695

    
1696
    /**
1697
     * darkness masking (0-> disabled)
1698
     * - encoding: Set by user.
1699
     * - decoding: unused
1700
     */
1701
    float dark_masking;
1702

    
1703
    /**
1704
     * IDCT algorithm, see FF_IDCT_* below.
1705
     * - encoding: Set by user.
1706
     * - decoding: Set by user.
1707
     */
1708
    int idct_algo;
1709
#define FF_IDCT_AUTO          0
1710
#define FF_IDCT_INT           1
1711
#define FF_IDCT_SIMPLE        2
1712
#define FF_IDCT_SIMPLEMMX     3
1713
#define FF_IDCT_LIBMPEG2MMX   4
1714
#define FF_IDCT_PS2           5
1715
#define FF_IDCT_MLIB          6
1716
#define FF_IDCT_ARM           7
1717
#define FF_IDCT_ALTIVEC       8
1718
#define FF_IDCT_SH4           9
1719
#define FF_IDCT_SIMPLEARM     10
1720
#define FF_IDCT_H264          11
1721
#define FF_IDCT_VP3           12
1722
#define FF_IDCT_IPP           13
1723
#define FF_IDCT_XVIDMMX       14
1724
#define FF_IDCT_CAVS          15
1725
#define FF_IDCT_SIMPLEARMV5TE 16
1726
#define FF_IDCT_SIMPLEARMV6   17
1727
#define FF_IDCT_SIMPLEVIS     18
1728
#define FF_IDCT_WMV2          19
1729
#define FF_IDCT_FAAN          20
1730
#define FF_IDCT_EA            21
1731
#define FF_IDCT_SIMPLENEON    22
1732
#define FF_IDCT_SIMPLEALPHA   23
1733
#define FF_IDCT_BINK          24
1734

    
1735
    /**
1736
     * slice count
1737
     * - encoding: Set by libavcodec.
1738
     * - decoding: Set by user (or 0).
1739
     */
1740
    int slice_count;
1741
    /**
1742
     * slice offsets in the frame in bytes
1743
     * - encoding: Set/allocated by libavcodec.
1744
     * - decoding: Set/allocated by user (or NULL).
1745
     */
1746
    int *slice_offset;
1747

    
1748
    /**
1749
     * error concealment flags
1750
     * - encoding: unused
1751
     * - decoding: Set by user.
1752
     */
1753
    int error_concealment;
1754
#define FF_EC_GUESS_MVS   1
1755
#define FF_EC_DEBLOCK     2
1756

    
1757
    /**
1758
     * dsp_mask could be add used to disable unwanted CPU features
1759
     * CPU features (i.e. MMX, SSE. ...)
1760
     *
1761
     * With the FORCE flag you may instead enable given CPU features.
1762
     * (Dangerous: Usable in case of misdetection, improper usage however will
1763
     * result into program crash.)
1764
     */
1765
    unsigned dsp_mask;
1766

    
1767
#if FF_API_MM_FLAGS
1768
#define FF_MM_FORCE      AV_CPU_FLAG_FORCE
1769
#define FF_MM_MMX        AV_CPU_FLAG_MMX
1770
#define FF_MM_3DNOW      AV_CPU_FLAG_3DNOW
1771
#define FF_MM_MMXEXT     AV_CPU_FLAG_MMX2
1772
#define FF_MM_MMX2       AV_CPU_FLAG_MMX2
1773
#define FF_MM_SSE        AV_CPU_FLAG_SSE
1774
#define FF_MM_SSE2       AV_CPU_FLAG_SSE2
1775
#define FF_MM_SSE2SLOW   AV_CPU_FLAG_SSE2SLOW
1776
#define FF_MM_3DNOWEXT   AV_CPU_FLAG_3DNOWEXT
1777
#define FF_MM_SSE3       AV_CPU_FLAG_SSE3
1778
#define FF_MM_SSE3SLOW   AV_CPU_FLAG_SSE3SLOW
1779
#define FF_MM_SSSE3      AV_CPU_FLAG_SSSE3
1780
#define FF_MM_SSE4       AV_CPU_FLAG_SSE4
1781
#define FF_MM_SSE42      AV_CPU_FLAG_SSE42
1782
#define FF_MM_IWMMXT     AV_CPU_FLAG_IWMMXT
1783
#define FF_MM_ALTIVEC    AV_CPU_FLAG_ALTIVEC
1784
#endif
1785

    
1786
    /**
1787
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1788
     * - encoding: Set by libavcodec.
1789
     * - decoding: Set by user.
1790
     */
1791
     int bits_per_coded_sample;
1792

    
1793
    /**
1794
     * prediction method (needed for huffyuv)
1795
     * - encoding: Set by user.
1796
     * - decoding: unused
1797
     */
1798
     int prediction_method;
1799
#define FF_PRED_LEFT   0
1800
#define FF_PRED_PLANE  1
1801
#define FF_PRED_MEDIAN 2
1802

    
1803
    /**
1804
     * sample aspect ratio (0 if unknown)
1805
     * That is the width of a pixel divided by the height of the pixel.
1806
     * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
1807
     * - encoding: Set by user.
1808
     * - decoding: Set by libavcodec.
1809
     */
1810
    AVRational sample_aspect_ratio;
1811

    
1812
    /**
1813
     * the picture in the bitstream
1814
     * - encoding: Set by libavcodec.
1815
     * - decoding: Set by libavcodec.
1816
     */
1817
    AVFrame *coded_frame;
1818

    
1819
    /**
1820
     * debug
1821
     * - encoding: Set by user.
1822
     * - decoding: Set by user.
1823
     */
1824
    int debug;
1825
#define FF_DEBUG_PICT_INFO   1
1826
#define FF_DEBUG_RC          2
1827
#define FF_DEBUG_BITSTREAM   4
1828
#define FF_DEBUG_MB_TYPE     8
1829
#define FF_DEBUG_QP          16
1830
#define FF_DEBUG_MV          32
1831
#define FF_DEBUG_DCT_COEFF   0x00000040
1832
#define FF_DEBUG_SKIP        0x00000080
1833
#define FF_DEBUG_STARTCODE   0x00000100
1834
#define FF_DEBUG_PTS         0x00000200
1835
#define FF_DEBUG_ER          0x00000400
1836
#define FF_DEBUG_MMCO        0x00000800
1837
#define FF_DEBUG_BUGS        0x00001000
1838
#define FF_DEBUG_VIS_QP      0x00002000
1839
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1840
#define FF_DEBUG_BUFFERS     0x00008000
1841
#define FF_DEBUG_THREADS     0x00010000
1842

    
1843
    /**
1844
     * debug
1845
     * - encoding: Set by user.
1846
     * - decoding: Set by user.
1847
     */
1848
    int debug_mv;
1849
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1850
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1851
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1852

    
1853
    /**
1854
     * error
1855
     * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
1856
     * - decoding: unused
1857
     */
1858
    uint64_t error[4];
1859

    
1860
    /**
1861
     * minimum MB quantizer
1862
     * - encoding: unused
1863
     * - decoding: unused
1864
     */
1865
    int mb_qmin;
1866

    
1867
    /**
1868
     * maximum MB quantizer
1869
     * - encoding: unused
1870
     * - decoding: unused
1871
     */
1872
    int mb_qmax;
1873

    
1874
    /**
1875
     * motion estimation comparison function
1876
     * - encoding: Set by user.
1877
     * - decoding: unused
1878
     */
1879
    int me_cmp;
1880
    /**
1881
     * subpixel motion estimation comparison function
1882
     * - encoding: Set by user.
1883
     * - decoding: unused
1884
     */
1885
    int me_sub_cmp;
1886
    /**
1887
     * macroblock comparison function (not supported yet)
1888
     * - encoding: Set by user.
1889
     * - decoding: unused
1890
     */
1891
    int mb_cmp;
1892
    /**
1893
     * interlaced DCT comparison function
1894
     * - encoding: Set by user.
1895
     * - decoding: unused
1896
     */
1897
    int ildct_cmp;
1898
#define FF_CMP_SAD    0
1899
#define FF_CMP_SSE    1
1900
#define FF_CMP_SATD   2
1901
#define FF_CMP_DCT    3
1902
#define FF_CMP_PSNR   4
1903
#define FF_CMP_BIT    5
1904
#define FF_CMP_RD     6
1905
#define FF_CMP_ZERO   7
1906
#define FF_CMP_VSAD   8
1907
#define FF_CMP_VSSE   9
1908
#define FF_CMP_NSSE   10
1909
#define FF_CMP_W53    11
1910
#define FF_CMP_W97    12
1911
#define FF_CMP_DCTMAX 13
1912
#define FF_CMP_DCT264 14
1913
#define FF_CMP_CHROMA 256
1914

    
1915
    /**
1916
     * ME diamond size & shape
1917
     * - encoding: Set by user.
1918
     * - decoding: unused
1919
     */
1920
    int dia_size;
1921

    
1922
    /**
1923
     * amount of previous MV predictors (2a+1 x 2a+1 square)
1924
     * - encoding: Set by user.
1925
     * - decoding: unused
1926
     */
1927
    int last_predictor_count;
1928

    
1929
    /**
1930
     * prepass for motion estimation
1931
     * - encoding: Set by user.
1932
     * - decoding: unused
1933
     */
1934
    int pre_me;
1935

    
1936
    /**
1937
     * motion estimation prepass comparison function
1938
     * - encoding: Set by user.
1939
     * - decoding: unused
1940
     */
1941
    int me_pre_cmp;
1942

    
1943
    /**
1944
     * ME prepass diamond size & shape
1945
     * - encoding: Set by user.
1946
     * - decoding: unused
1947
     */
1948
    int pre_dia_size;
1949

    
1950
    /**
1951
     * subpel ME quality
1952
     * - encoding: Set by user.
1953
     * - decoding: unused
1954
     */
1955
    int me_subpel_quality;
1956

    
1957
    /**
1958
     * callback to negotiate the pixelFormat
1959
     * @param fmt is the list of formats which are supported by the codec,
1960
     * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
1961
     * The first is always the native one.
1962
     * @return the chosen format
1963
     * - encoding: unused
1964
     * - decoding: Set by user, if not set the native format will be chosen.
1965
     */
1966
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1967

    
1968
    /**
1969
     * DTG active format information (additional aspect ratio
1970
     * information only used in DVB MPEG-2 transport streams)
1971
     * 0 if not set.
1972
     *
1973
     * - encoding: unused
1974
     * - decoding: Set by decoder.
1975
     */
1976
    int dtg_active_format;
1977
#define FF_DTG_AFD_SAME         8
1978
#define FF_DTG_AFD_4_3          9
1979
#define FF_DTG_AFD_16_9         10
1980
#define FF_DTG_AFD_14_9         11
1981
#define FF_DTG_AFD_4_3_SP_14_9  13
1982
#define FF_DTG_AFD_16_9_SP_14_9 14
1983
#define FF_DTG_AFD_SP_4_3       15
1984

    
1985
    /**
1986
     * maximum motion estimation search range in subpel units
1987
     * If 0 then no limit.
1988
     *
1989
     * - encoding: Set by user.
1990
     * - decoding: unused
1991
     */
1992
    int me_range;
1993

    
1994
    /**
1995
     * intra quantizer bias
1996
     * - encoding: Set by user.
1997
     * - decoding: unused
1998
     */
1999
    int intra_quant_bias;
2000
#define FF_DEFAULT_QUANT_BIAS 999999
2001

    
2002
    /**
2003
     * inter quantizer bias
2004
     * - encoding: Set by user.
2005
     * - decoding: unused
2006
     */
2007
    int inter_quant_bias;
2008

    
2009
    /**
2010
     * color table ID
2011
     * - encoding: unused
2012
     * - decoding: Which clrtable should be used for 8bit RGB images.
2013
     *             Tables have to be stored somewhere. FIXME
2014
     */
2015
    int color_table_id;
2016

    
2017
    /**
2018
     * internal_buffer count
2019
     * Don't touch, used by libavcodec default_get_buffer().
2020
     */
2021
    int internal_buffer_count;
2022

    
2023
    /**
2024
     * internal_buffers
2025
     * Don't touch, used by libavcodec default_get_buffer().
2026
     */
2027
    void *internal_buffer;
2028

    
2029
    /**
2030
     * Global quality for codecs which cannot change it per frame.
2031
     * This should be proportional to MPEG-1/2/4 qscale.
2032
     * - encoding: Set by user.
2033
     * - decoding: unused
2034
     */
2035
    int global_quality;
2036

    
2037
#define FF_CODER_TYPE_VLC       0
2038
#define FF_CODER_TYPE_AC        1
2039
#define FF_CODER_TYPE_RAW       2
2040
#define FF_CODER_TYPE_RLE       3
2041
#define FF_CODER_TYPE_DEFLATE   4
2042
    /**
2043
     * coder type
2044
     * - encoding: Set by user.
2045
     * - decoding: unused
2046
     */
2047
    int coder_type;
2048

    
2049
    /**
2050
     * context model
2051
     * - encoding: Set by user.
2052
     * - decoding: unused
2053
     */
2054
    int context_model;
2055
#if 0
2056
    /**
2057
     *
2058
     * - encoding: unused
2059
     * - decoding: Set by user.
2060
     */
2061
    uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
2062
#endif
2063

    
2064
    /**
2065
     * slice flags
2066
     * - encoding: unused
2067
     * - decoding: Set by user.
2068
     */
2069
    int slice_flags;
2070
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
2071
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
2072
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
2073

    
2074
    /**
2075
     * XVideo Motion Acceleration
2076
     * - encoding: forbidden
2077
     * - decoding: set by decoder
2078
     */
2079
    int xvmc_acceleration;
2080

    
2081
    /**
2082
     * macroblock decision mode
2083
     * - encoding: Set by user.
2084
     * - decoding: unused
2085
     */
2086
    int mb_decision;
2087
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
2088
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
2089
#define FF_MB_DECISION_RD     2        ///< rate distortion
2090

    
2091
    /**
2092
     * custom intra quantization matrix
2093
     * - encoding: Set by user, can be NULL.
2094
     * - decoding: Set by libavcodec.
2095
     */
2096
    uint16_t *intra_matrix;
2097

    
2098
    /**
2099
     * custom inter quantization matrix
2100
     * - encoding: Set by user, can be NULL.
2101
     * - decoding: Set by libavcodec.
2102
     */
2103
    uint16_t *inter_matrix;
2104

    
2105
    /**
2106
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
2107
     * This is used to work around some encoder bugs.
2108
     * - encoding: unused
2109
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
2110
     */
2111
    unsigned int stream_codec_tag;
2112

    
2113
    /**
2114
     * scene change detection threshold
2115
     * 0 is default, larger means fewer detected scene changes.
2116
     * - encoding: Set by user.
2117
     * - decoding: unused
2118
     */
2119
    int scenechange_threshold;
2120

    
2121
    /**
2122
     * minimum Lagrange multipler
2123
     * - encoding: Set by user.
2124
     * - decoding: unused
2125
     */
2126
    int lmin;
2127

    
2128
    /**
2129
     * maximum Lagrange multipler
2130
     * - encoding: Set by user.
2131
     * - decoding: unused
2132
     */
2133
    int lmax;
2134

    
2135
#if FF_API_PALETTE_CONTROL
2136
    /**
2137
     * palette control structure
2138
     * - encoding: ??? (no palette-enabled encoder yet)
2139
     * - decoding: Set by user.
2140
     */
2141
    struct AVPaletteControl *palctrl;
2142
#endif
2143

    
2144
    /**
2145
     * noise reduction strength
2146
     * - encoding: Set by user.
2147
     * - decoding: unused
2148
     */
2149
    int noise_reduction;
2150

    
2151
    /**
2152
     * Called at the beginning of a frame to get cr buffer for it.
2153
     * Buffer type (size, hints) must be the same. libavcodec won't check it.
2154
     * libavcodec will pass previous buffer in pic, function should return
2155
     * same buffer or new buffer with old frame "painted" into it.
2156
     * If pic.data[0] == NULL must behave like get_buffer().
2157
     * if CODEC_CAP_DR1 is not set then reget_buffer() must call
2158
     * avcodec_default_reget_buffer() instead of providing buffers allocated by
2159
     * some other means.
2160
     * - encoding: unused
2161
     * - decoding: Set by libavcodec, user can override.
2162
     */
2163
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
2164

    
2165
    /**
2166
     * Number of bits which should be loaded into the rc buffer before decoding starts.
2167
     * - encoding: Set by user.
2168
     * - decoding: unused
2169
     */
2170
    int rc_initial_buffer_occupancy;
2171

    
2172
    /**
2173
     *
2174
     * - encoding: Set by user.
2175
     * - decoding: unused
2176
     */
2177
    int inter_threshold;
2178

    
2179
    /**
2180
     * CODEC_FLAG2_*
2181
     * - encoding: Set by user.
2182
     * - decoding: Set by user.
2183
     */
2184
    int flags2;
2185

    
2186
    /**
2187
     * Simulates errors in the bitstream to test error concealment.
2188
     * - encoding: Set by user.
2189
     * - decoding: unused
2190
     */
2191
    int error_rate;
2192

    
2193
    /**
2194
     * MP3 antialias algorithm, see FF_AA_* below.
2195
     * - encoding: unused
2196
     * - decoding: Set by user.
2197
     */
2198
    int antialias_algo;
2199
#define FF_AA_AUTO    0
2200
#define FF_AA_FASTINT 1 //not implemented yet
2201
#define FF_AA_INT     2
2202
#define FF_AA_FLOAT   3
2203
    /**
2204
     * quantizer noise shaping
2205
     * - encoding: Set by user.
2206
     * - decoding: unused
2207
     */
2208
    int quantizer_noise_shaping;
2209

    
2210
    /**
2211
     * thread count
2212
     * is used to decide how many independent tasks should be passed to execute()
2213
     * - encoding: Set by user.
2214
     * - decoding: Set by user.
2215
     */
2216
    int thread_count;
2217

    
2218
    /**
2219
     * The codec may call this to execute several independent things.
2220
     * It will return only after finishing all tasks.
2221
     * The user may replace this with some multithreaded implementation,
2222
     * the default implementation will execute the parts serially.
2223
     * @param count the number of things to execute
2224
     * - encoding: Set by libavcodec, user can override.
2225
     * - decoding: Set by libavcodec, user can override.
2226
     */
2227
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size);
2228

    
2229
    /**
2230
     * thread opaque
2231
     * Can be used by execute() to store some per AVCodecContext stuff.
2232
     * - encoding: set by execute()
2233
     * - decoding: set by execute()
2234
     */
2235
    void *thread_opaque;
2236

    
2237
    /**
2238
     * Motion estimation threshold below which no motion estimation is
2239
     * performed, but instead the user specified motion vectors are used.
2240
     *
2241
     * - encoding: Set by user.
2242
     * - decoding: unused
2243
     */
2244
     int me_threshold;
2245

    
2246
    /**
2247
     * Macroblock threshold below which the user specified macroblock types will be used.
2248
     * - encoding: Set by user.
2249
     * - decoding: unused
2250
     */
2251
     int mb_threshold;
2252

    
2253
    /**
2254
     * precision of the intra DC coefficient - 8
2255
     * - encoding: Set by user.
2256
     * - decoding: unused
2257
     */
2258
     int intra_dc_precision;
2259

    
2260
    /**
2261
     * noise vs. sse weight for the nsse comparsion function
2262
     * - encoding: Set by user.
2263
     * - decoding: unused
2264
     */
2265
     int nsse_weight;
2266

    
2267
    /**
2268
     * Number of macroblock rows at the top which are skipped.
2269
     * - encoding: unused
2270
     * - decoding: Set by user.
2271
     */
2272
     int skip_top;
2273

    
2274
    /**
2275
     * Number of macroblock rows at the bottom which are skipped.
2276
     * - encoding: unused
2277
     * - decoding: Set by user.
2278
     */
2279
     int skip_bottom;
2280

    
2281
    /**
2282
     * profile
2283
     * - encoding: Set by user.
2284
     * - decoding: Set by libavcodec.
2285
     */
2286
     int profile;
2287
#define FF_PROFILE_UNKNOWN -99
2288

    
2289
#define FF_PROFILE_AAC_MAIN 0
2290
#define FF_PROFILE_AAC_LOW  1
2291
#define FF_PROFILE_AAC_SSR  2
2292
#define FF_PROFILE_AAC_LTP  3
2293

    
2294
#define FF_PROFILE_DTS         20
2295
#define FF_PROFILE_DTS_ES      30
2296
#define FF_PROFILE_DTS_96_24   40
2297
#define FF_PROFILE_DTS_HD_HRA  50
2298
#define FF_PROFILE_DTS_HD_MA   60
2299

    
2300
#define FF_PROFILE_H264_CONSTRAINED  (1<<9)  // 8+1; constraint_set1_flag
2301
#define FF_PROFILE_H264_INTRA        (1<<11) // 8+3; constraint_set3_flag
2302

    
2303
#define FF_PROFILE_H264_BASELINE             66
2304
#define FF_PROFILE_H264_CONSTRAINED_BASELINE (66|FF_PROFILE_H264_CONSTRAINED)
2305
#define FF_PROFILE_H264_MAIN                 77
2306
#define FF_PROFILE_H264_EXTENDED             88
2307
#define FF_PROFILE_H264_HIGH                 100
2308
#define FF_PROFILE_H264_HIGH_10              110
2309
#define FF_PROFILE_H264_HIGH_10_INTRA        (110|FF_PROFILE_H264_INTRA)
2310
#define FF_PROFILE_H264_HIGH_422             122
2311
#define FF_PROFILE_H264_HIGH_422_INTRA       (122|FF_PROFILE_H264_INTRA)
2312
#define FF_PROFILE_H264_HIGH_444             144
2313
#define FF_PROFILE_H264_HIGH_444_PREDICTIVE  244
2314
#define FF_PROFILE_H264_HIGH_444_INTRA       (244|FF_PROFILE_H264_INTRA)
2315
#define FF_PROFILE_H264_CAVLC_444            44
2316

    
2317
    /**
2318
     * level
2319
     * - encoding: Set by user.
2320
     * - decoding: Set by libavcodec.
2321
     */
2322
     int level;
2323
#define FF_LEVEL_UNKNOWN -99
2324

    
2325
    /**
2326
     * low resolution decoding, 1-> 1/2 size, 2->1/4 size
2327
     * - encoding: unused
2328
     * - decoding: Set by user.
2329
     */
2330
     int lowres;
2331

    
2332
    /**
2333
     * Bitstream width / height, may be different from width/height if lowres
2334
     * or other things are used.
2335
     * - encoding: unused
2336
     * - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
2337
     */
2338
    int coded_width, coded_height;
2339

    
2340
    /**
2341
     * frame skip threshold
2342
     * - encoding: Set by user.
2343
     * - decoding: unused
2344
     */
2345
    int frame_skip_threshold;
2346

    
2347
    /**
2348
     * frame skip factor
2349
     * - encoding: Set by user.
2350
     * - decoding: unused
2351
     */
2352
    int frame_skip_factor;
2353

    
2354
    /**
2355
     * frame skip exponent
2356
     * - encoding: Set by user.
2357
     * - decoding: unused
2358
     */
2359
    int frame_skip_exp;
2360

    
2361
    /**
2362
     * frame skip comparison function
2363
     * - encoding: Set by user.
2364
     * - decoding: unused
2365
     */
2366
    int frame_skip_cmp;
2367

    
2368
    /**
2369
     * Border processing masking, raises the quantizer for mbs on the borders
2370
     * of the picture.
2371
     * - encoding: Set by user.
2372
     * - decoding: unused
2373
     */
2374
    float border_masking;
2375

    
2376
    /**
2377
     * minimum MB lagrange multipler
2378
     * - encoding: Set by user.
2379
     * - decoding: unused
2380
     */
2381
    int mb_lmin;
2382

    
2383
    /**
2384
     * maximum MB lagrange multipler
2385
     * - encoding: Set by user.
2386
     * - decoding: unused
2387
     */
2388
    int mb_lmax;
2389

    
2390
    /**
2391
     *
2392
     * - encoding: Set by user.
2393
     * - decoding: unused
2394
     */
2395
    int me_penalty_compensation;
2396

    
2397
    /**
2398
     *
2399
     * - encoding: unused
2400
     * - decoding: Set by user.
2401
     */
2402
    enum AVDiscard skip_loop_filter;
2403

    
2404
    /**
2405
     *
2406
     * - encoding: unused
2407
     * - decoding: Set by user.
2408
     */
2409
    enum AVDiscard skip_idct;
2410

    
2411
    /**
2412
     *
2413
     * - encoding: unused
2414
     * - decoding: Set by user.
2415
     */
2416
    enum AVDiscard skip_frame;
2417

    
2418
    /**
2419
     *
2420
     * - encoding: Set by user.
2421
     * - decoding: unused
2422
     */
2423
    int bidir_refine;
2424

    
2425
    /**
2426
     *
2427
     * - encoding: Set by user.
2428
     * - decoding: unused
2429
     */
2430
    int brd_scale;
2431

    
2432
    /**
2433
     * constant rate factor - quality-based VBR - values ~correspond to qps
2434
     * - encoding: Set by user.
2435
     * - decoding: unused
2436
     */
2437
    float crf;
2438

    
2439
    /**
2440
     * constant quantization parameter rate control method
2441
     * - encoding: Set by user.
2442
     * - decoding: unused
2443
     */
2444
    int cqp;
2445

    
2446
    /**
2447
     * minimum GOP size
2448
     * - encoding: Set by user.
2449
     * - decoding: unused
2450
     */
2451
    int keyint_min;
2452

    
2453
    /**
2454
     * number of reference frames
2455
     * - encoding: Set by user.
2456
     * - decoding: Set by lavc.
2457
     */
2458
    int refs;
2459

    
2460
    /**
2461
     * chroma qp offset from luma
2462
     * - encoding: Set by user.
2463
     * - decoding: unused
2464
     */
2465
    int chromaoffset;
2466

    
2467
    /**
2468
     * Influences how often B-frames are used.
2469
     * - encoding: Set by user.
2470
     * - decoding: unused
2471
     */
2472
    int bframebias;
2473

    
2474
    /**
2475
     * trellis RD quantization
2476
     * - encoding: Set by user.
2477
     * - decoding: unused
2478
     */
2479
    int trellis;
2480

    
2481
    /**
2482
     * Reduce fluctuations in qp (before curve compression).
2483
     * - encoding: Set by user.
2484
     * - decoding: unused
2485
     */
2486
    float complexityblur;
2487

    
2488
    /**
2489
     * in-loop deblocking filter alphac0 parameter
2490
     * alpha is in the range -6...6
2491
     * - encoding: Set by user.
2492
     * - decoding: unused
2493
     */
2494
    int deblockalpha;
2495

    
2496
    /**
2497
     * in-loop deblocking filter beta parameter
2498
     * beta is in the range -6...6
2499
     * - encoding: Set by user.
2500
     * - decoding: unused
2501
     */
2502
    int deblockbeta;
2503

    
2504
    /**
2505
     * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
2506
     * - encoding: Set by user.
2507
     * - decoding: unused
2508
     */
2509
    int partitions;
2510
#define X264_PART_I4X4 0x001  /* Analyze i4x4 */
2511
#define X264_PART_I8X8 0x002  /* Analyze i8x8 (requires 8x8 transform) */
2512
#define X264_PART_P8X8 0x010  /* Analyze p16x8, p8x16 and p8x8 */
2513
#define X264_PART_P4X4 0x020  /* Analyze p8x4, p4x8, p4x4 */
2514
#define X264_PART_B8X8 0x100  /* Analyze b16x8, b8x16 and b8x8 */
2515

    
2516
    /**
2517
     * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto)
2518
     * - encoding: Set by user.
2519
     * - decoding: unused
2520
     */
2521
    int directpred;
2522

    
2523
    /**
2524
     * Audio cutoff bandwidth (0 means "automatic")
2525
     * - encoding: Set by user.
2526
     * - decoding: unused
2527
     */
2528
    int cutoff;
2529

    
2530
    /**
2531
     * Multiplied by qscale for each frame and added to scene_change_score.
2532
     * - encoding: Set by user.
2533
     * - decoding: unused
2534
     */
2535
    int scenechange_factor;
2536

    
2537
    /**
2538
     *
2539
     * Note: Value depends upon the compare function used for fullpel ME.
2540
     * - encoding: Set by user.
2541
     * - decoding: unused
2542
     */
2543
    int mv0_threshold;
2544

    
2545
    /**
2546
     * Adjusts sensitivity of b_frame_strategy 1.
2547
     * - encoding: Set by user.
2548
     * - decoding: unused
2549
     */
2550
    int b_sensitivity;
2551

    
2552
    /**
2553
     * - encoding: Set by user.
2554
     * - decoding: unused
2555
     */
2556
    int compression_level;
2557
#define FF_COMPRESSION_DEFAULT -1
2558

    
2559
#if FF_API_USE_LPC
2560
    /**
2561
     * Sets whether to use LPC mode - used by FLAC encoder.
2562
     * - encoding: Set by user.
2563
     * - decoding: unused
2564
     * @deprecated Deprecated in favor of lpc_type and lpc_passes.
2565
     */
2566
    int use_lpc;
2567
#endif
2568

    
2569
    /**
2570
     * LPC coefficient precision - used by FLAC encoder
2571
     * - encoding: Set by user.
2572
     * - decoding: unused
2573
     */
2574
    int lpc_coeff_precision;
2575

    
2576
    /**
2577
     * - encoding: Set by user.
2578
     * - decoding: unused
2579
     */
2580
    int min_prediction_order;
2581

    
2582
    /**
2583
     * - encoding: Set by user.
2584
     * - decoding: unused
2585
     */
2586
    int max_prediction_order;
2587

    
2588
    /**
2589
     * search method for selecting prediction order
2590
     * - encoding: Set by user.
2591
     * - decoding: unused
2592
     */
2593
    int prediction_order_method;
2594

    
2595
    /**
2596
     * - encoding: Set by user.
2597
     * - decoding: unused
2598
     */
2599
    int min_partition_order;
2600

    
2601
    /**
2602
     * - encoding: Set by user.
2603
     * - decoding: unused
2604
     */
2605
    int max_partition_order;
2606

    
2607
    /**
2608
     * GOP timecode frame start number, in non drop frame format
2609
     * - encoding: Set by user.
2610
     * - decoding: unused
2611
     */
2612
    int64_t timecode_frame_start;
2613

    
2614
#if LIBAVCODEC_VERSION_MAJOR < 53
2615
    /**
2616
     * Decoder should decode to this many channels if it can (0 for default)
2617
     * - encoding: unused
2618
     * - decoding: Set by user.
2619
     * @deprecated Deprecated in favor of request_channel_layout.
2620
     */
2621
    int request_channels;
2622
#endif
2623

    
2624
    /**
2625
     * Percentage of dynamic range compression to be applied by the decoder.
2626
     * The default value is 1.0, corresponding to full compression.
2627
     * - encoding: unused
2628
     * - decoding: Set by user.
2629
     */
2630
    float drc_scale;
2631

    
2632
    /**
2633
     * opaque 64bit number (generally a PTS) that will be reordered and
2634
     * output in AVFrame.reordered_opaque
2635
     * @deprecated in favor of pkt_pts
2636
     * - encoding: unused
2637
     * - decoding: Set by user.
2638
     */
2639
    int64_t reordered_opaque;
2640

    
2641
    /**
2642
     * Bits per sample/pixel of internal libavcodec pixel/sample format.
2643
     * This field is applicable only when sample_fmt is AV_SAMPLE_FMT_S32.
2644
     * - encoding: set by user.
2645
     * - decoding: set by libavcodec.
2646
     */
2647
    int bits_per_raw_sample;
2648

    
2649
    /**
2650
     * Audio channel layout.
2651
     * - encoding: set by user.
2652
     * - decoding: set by libavcodec.
2653
     */
2654
    int64_t channel_layout;
2655

    
2656
    /**
2657
     * Request decoder to use this channel layout if it can (0 for default)
2658
     * - encoding: unused
2659
     * - decoding: Set by user.
2660
     */
2661
    int64_t request_channel_layout;
2662

    
2663
    /**
2664
     * Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow.
2665
     * - encoding: Set by user.
2666
     * - decoding: unused.
2667
     */
2668
    float rc_max_available_vbv_use;
2669

    
2670
    /**
2671
     * Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow.
2672
     * - encoding: Set by user.
2673
     * - decoding: unused.
2674
     */
2675
    float rc_min_vbv_overflow_use;
2676

    
2677
    /**
2678
     * Hardware accelerator in use
2679
     * - encoding: unused.
2680
     * - decoding: Set by libavcodec
2681
     */
2682
    struct AVHWAccel *hwaccel;
2683

    
2684
    /**
2685
     * For some codecs, the time base is closer to the field rate than the frame rate.
2686
     * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration
2687
     * if no telecine is used ...
2688
     *
2689
     * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2.
2690
     */
2691
    int ticks_per_frame;
2692

    
2693
    /**
2694
     * Hardware accelerator context.
2695
     * For some hardware accelerators, a global context needs to be
2696
     * provided by the user. In that case, this holds display-dependent
2697
     * data FFmpeg cannot instantiate itself. Please refer to the
2698
     * FFmpeg HW accelerator documentation to know how to fill this
2699
     * is. e.g. for VA API, this is a struct vaapi_context.
2700
     * - encoding: unused
2701
     * - decoding: Set by user
2702
     */
2703
    void *hwaccel_context;
2704

    
2705
    /**
2706
     * Chromaticity coordinates of the source primaries.
2707
     * - encoding: Set by user
2708
     * - decoding: Set by libavcodec
2709
     */
2710
    enum AVColorPrimaries color_primaries;
2711

    
2712
    /**
2713
     * Color Transfer Characteristic.
2714
     * - encoding: Set by user
2715
     * - decoding: Set by libavcodec
2716
     */
2717
    enum AVColorTransferCharacteristic color_trc;
2718

    
2719
    /**
2720
     * YUV colorspace type.
2721
     * - encoding: Set by user
2722
     * - decoding: Set by libavcodec
2723
     */
2724
    enum AVColorSpace colorspace;
2725

    
2726
    /**
2727
     * MPEG vs JPEG YUV range.
2728
     * - encoding: Set by user
2729
     * - decoding: Set by libavcodec
2730
     */
2731
    enum AVColorRange color_range;
2732

    
2733
    /**
2734
     * This defines the location of chroma samples.
2735
     * - encoding: Set by user
2736
     * - decoding: Set by libavcodec
2737
     */
2738
    enum AVChromaLocation chroma_sample_location;
2739

    
2740
    /**
2741
     * The codec may call this to execute several independent things.
2742
     * It will return only after finishing all tasks.
2743
     * The user may replace this with some multithreaded implementation,
2744
     * the default implementation will execute the parts serially.
2745
     * Also see avcodec_thread_init and e.g. the --enable-pthread configure option.
2746
     * @param c context passed also to func
2747
     * @param count the number of things to execute
2748
     * @param arg2 argument passed unchanged to func
2749
     * @param ret return values of executed functions, must have space for "count" values. May be NULL.
2750
     * @param func function that will be called count times, with jobnr from 0 to count-1.
2751
     *             threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no
2752
     *             two instances of func executing at the same time will have the same threadnr.
2753
     * @return always 0 currently, but code should handle a future improvement where when any call to func
2754
     *         returns < 0 no further calls to func may be done and < 0 is returned.
2755
     * - encoding: Set by libavcodec, user can override.
2756
     * - decoding: Set by libavcodec, user can override.
2757
     */
2758
    int (*execute2)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count);
2759

    
2760
    /**
2761
     * explicit P-frame weighted prediction analysis method
2762
     * 0: off
2763
     * 1: fast blind weighting (one reference duplicate with -1 offset)
2764
     * 2: smart weighting (full fade detection analysis)
2765
     * - encoding: Set by user.
2766
     * - decoding: unused
2767
     */
2768
    int weighted_p_pred;
2769

    
2770
    /**
2771
     * AQ mode
2772
     * 0: Disabled
2773
     * 1: Variance AQ (complexity mask)
2774
     * 2: Auto-variance AQ (experimental)
2775
     * - encoding: Set by user
2776
     * - decoding: unused
2777
     */
2778
    int aq_mode;
2779

    
2780
    /**
2781
     * AQ strength
2782
     * Reduces blocking and blurring in flat and textured areas.
2783
     * - encoding: Set by user
2784
     * - decoding: unused
2785
     */
2786
    float aq_strength;
2787

    
2788
    /**
2789
     * PSY RD
2790
     * Strength of psychovisual optimization
2791
     * - encoding: Set by user
2792
     * - decoding: unused
2793
     */
2794
    float psy_rd;
2795

    
2796
    /**
2797
     * PSY trellis
2798
     * Strength of psychovisual optimization
2799
     * - encoding: Set by user
2800
     * - decoding: unused
2801
     */
2802
    float psy_trellis;
2803

    
2804
    /**
2805
     * RC lookahead
2806
     * Number of frames for frametype and ratecontrol lookahead
2807
     * - encoding: Set by user
2808
     * - decoding: unused
2809
     */
2810
    int rc_lookahead;
2811

    
2812
    /**
2813
     * Constant rate factor maximum
2814
     * With CRF encoding mode and VBV restrictions enabled, prevents quality from being worse
2815
     * than crf_max, even if doing so would violate VBV restrictions.
2816
     * - encoding: Set by user.
2817
     * - decoding: unused
2818
     */
2819
    float crf_max;
2820

    
2821
    int log_level_offset;
2822

    
2823
    /**
2824
     * Determines which LPC analysis algorithm to use.
2825
     * - encoding: Set by user
2826
     * - decoding: unused
2827
     */
2828
    enum AVLPCType lpc_type;
2829

    
2830
    /**
2831
     * Number of passes to use for Cholesky factorization during LPC analysis
2832
     * - encoding: Set by user
2833
     * - decoding: unused
2834
     */
2835
    int lpc_passes;
2836

    
2837
    /**
2838
     * Number of slices.
2839
     * Indicates number of picture subdivisions. Used for parallelized
2840
     * decoding.
2841
     * - encoding: Set by user
2842
     * - decoding: unused
2843
     */
2844
    int slices;
2845

    
2846
    /**
2847
     * Header containing style information for text subtitles.
2848
     * For SUBTITLE_ASS subtitle type, it should contain the whole ASS
2849
     * [Script Info] and [V4+ Styles] section, plus the [Events] line and
2850
     * the Format line following. It shouldn't include any Dialogue line.
2851
     * - encoding: Set/allocated/freed by user (before avcodec_open())
2852
     * - decoding: Set/allocated/freed by libavcodec (by avcodec_open())
2853
     */
2854
    uint8_t *subtitle_header;
2855
    int subtitle_header_size;
2856

    
2857
    /**
2858
     * Current packet as passed into the decoder, to avoid having
2859
     * to pass the packet into every function. Currently only valid
2860
     * inside lavc and get/release_buffer callbacks.
2861
     * - decoding: set by avcodec_decode_*, read by get_buffer() for setting pkt_pts
2862
     * - encoding: unused
2863
     */
2864
    AVPacket *pkt;
2865

    
2866
    /**
2867
     * Whether this is a copy of the context which had init() called on it.
2868
     * This is used by multithreading - shared tables and picture pointers
2869
     * should be freed from the original context only.
2870
     * - encoding: Set by libavcodec.
2871
     * - decoding: Set by libavcodec.
2872
     */
2873
    int is_copy;
2874

    
2875
    /**
2876
     * Which multithreading methods to use.
2877
     * Use of FF_THREAD_FRAME will increase decoding delay by one frame per thread,
2878
     * so clients which cannot provide future frames should not use it.
2879
     *
2880
     * - encoding: Set by user, otherwise the default is used.
2881
     * - decoding: Set by user, otherwise the default is used.
2882
     */
2883
    int thread_type;
2884
#define FF_THREAD_FRAME   1 //< Decode more than one frame at once
2885
#define FF_THREAD_SLICE   2 //< Decode more than one part of a single frame at once
2886

    
2887
    /**
2888
     * Which multithreading methods are in use by the codec.
2889
     * - encoding: Set by libavcodec.
2890
     * - decoding: Set by libavcodec.
2891
     */
2892
    int active_thread_type;
2893

    
2894
    /**
2895
     * Set by the client if its custom get_buffer() callback can be called
2896
     * from another thread, which allows faster multithreaded decoding.
2897
     * draw_horiz_band() will be called from other threads regardless of this setting.
2898
     * Ignored if the default get_buffer() is used.
2899
     * - encoding: Set by user.
2900
     * - decoding: Set by user.
2901
     */
2902
    int thread_safe_callbacks;
2903

    
2904
    /**
2905
     * Current statistics for PTS correction.
2906
     * - decoding: maintained and used by libavcodec, not intended to be used by user apps
2907
     * - encoding: unused
2908
     */
2909
    int64_t pts_correction_num_faulty_pts; /// Number of incorrect PTS values so far
2910
    int64_t pts_correction_num_faulty_dts; /// Number of incorrect DTS values so far
2911
    int64_t pts_correction_last_pts;       /// PTS of the last frame
2912
    int64_t pts_correction_last_dts;       /// DTS of the last frame
2913

    
2914
} AVCodecContext;
2915

    
2916
/**
2917
 * AVProfile.
2918
 */
2919
typedef struct AVProfile {
2920
    int profile;
2921
    const char *name; ///< short name for the profile
2922
} AVProfile;
2923

    
2924
/**
2925
 * AVCodec.
2926
 */
2927
typedef struct AVCodec {
2928
    /**
2929
     * Name of the codec implementation.
2930
     * The name is globally unique among encoders and among decoders (but an
2931
     * encoder and a decoder can share the same name).
2932
     * This is the primary way to find a codec from the user perspective.
2933
     */
2934
    const char *name;
2935
    enum AVMediaType type;
2936
    enum CodecID id;
2937
    int priv_data_size;
2938
    int (*init)(AVCodecContext *);
2939
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2940
    int (*close)(AVCodecContext *);
2941
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt);
2942
    /**
2943
     * Codec capabilities.
2944
     * see CODEC_CAP_*
2945
     */
2946
    int capabilities;
2947
    struct AVCodec *next;
2948
    /**
2949
     * Flush buffers.
2950
     * Will be called when seeking
2951
     */
2952
    void (*flush)(AVCodecContext *);
2953
    const AVRational *supported_framerates; ///< array of supported framerates, or NULL if any, array is terminated by {0,0}
2954
    const enum PixelFormat *pix_fmts;       ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1
2955
    /**
2956
     * Descriptive name for the codec, meant to be more human readable than name.
2957
     * You should use the NULL_IF_CONFIG_SMALL() macro to define it.
2958
     */
2959
    const char *long_name;
2960
    const int *supported_samplerates;       ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0
2961
    const enum AVSampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1
2962
    const int64_t *channel_layouts;         ///< array of support channel layouts, or NULL if unknown. array is terminated by 0
2963
    uint8_t max_lowres;                     ///< maximum value for lowres supported by the decoder
2964
    AVClass *priv_class;                    ///< AVClass for the private context
2965
    const AVProfile *profiles;              ///< array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN}
2966

    
2967
    /**
2968
     * @defgroup framethreading Frame-level threading support functions.
2969
     * @{
2970
     */
2971
    /**
2972
     * If defined, called on thread contexts when they are created.
2973
     * If the codec allocates writable tables in init(), re-allocate them here.
2974
     * priv_data will be set to a copy of the original.
2975
     */
2976
    int (*init_thread_copy)(AVCodecContext *);
2977
    /**
2978
     * Copy necessary context variables from a previous thread context to the current one.
2979
     * If not defined, the next thread will start automatically; otherwise, the codec
2980
     * must call ff_thread_finish_setup().
2981
     *
2982
     * dst and src will (rarely) point to the same context, in which case memcpy should be skipped.
2983
     */
2984
    int (*update_thread_context)(AVCodecContext *dst, const AVCodecContext *src);
2985
    /** @} */
2986
} AVCodec;
2987

    
2988
/**
2989
 * AVHWAccel.
2990
 */
2991
typedef struct AVHWAccel {
2992
    /**
2993
     * Name of the hardware accelerated codec.
2994
     * The name is globally unique among encoders and among decoders (but an
2995
     * encoder and a decoder can share the same name).
2996
     */
2997
    const char *name;
2998

    
2999
    /**
3000
     * Type of codec implemented by the hardware accelerator.
3001
     *
3002
     * See AVMEDIA_TYPE_xxx
3003
     */
3004
    enum AVMediaType type;
3005

    
3006
    /**
3007
     * Codec implemented by the hardware accelerator.
3008
     *
3009
     * See CODEC_ID_xxx
3010
     */
3011
    enum CodecID id;
3012

    
3013
    /**
3014
     * Supported pixel format.
3015
     *
3016
     * Only hardware accelerated formats are supported here.
3017
     */
3018
    enum PixelFormat pix_fmt;
3019

    
3020
    /**
3021
     * Hardware accelerated codec capabilities.
3022
     * see FF_HWACCEL_CODEC_CAP_*
3023
     */
3024
    int capabilities;
3025

    
3026
    struct AVHWAccel *next;
3027

    
3028
    /**
3029
     * Called at the beginning of each frame or field picture.
3030
     *
3031
     * Meaningful frame information (codec specific) is guaranteed to
3032
     * be parsed at this point. This function is mandatory.
3033
     *
3034
     * Note that buf can be NULL along with buf_size set to 0.
3035
     * Otherwise, this means the whole frame is available at this point.
3036
     *
3037
     * @param avctx the codec context
3038
     * @param buf the frame data buffer base
3039
     * @param buf_size the size of the frame in bytes
3040
     * @return zero if successful, a negative value otherwise
3041
     */
3042
    int (*start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
3043

    
3044
    /**
3045
     * Callback for each slice.
3046
     *
3047
     * Meaningful slice information (codec specific) is guaranteed to
3048
     * be parsed at this point. This function is mandatory.
3049
     *
3050
     * @param avctx the codec context
3051
     * @param buf the slice data buffer base
3052
     * @param buf_size the size of the slice in bytes
3053
     * @return zero if successful, a negative value otherwise
3054
     */
3055
    int (*decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
3056

    
3057
    /**
3058
     * Called at the end of each frame or field picture.
3059
     *
3060
     * The whole picture is parsed at this point and can now be sent
3061
     * to the hardware accelerator. This function is mandatory.
3062
     *
3063
     * @param avctx the codec context
3064
     * @return zero if successful, a negative value otherwise
3065
     */
3066
    int (*end_frame)(AVCodecContext *avctx);
3067

    
3068
    /**
3069
     * Size of HW accelerator private data.
3070
     *
3071
     * Private data is allocated with av_mallocz() before
3072
     * AVCodecContext.get_buffer() and deallocated after
3073
     * AVCodecContext.release_buffer().
3074
     */
3075
    int priv_data_size;
3076
} AVHWAccel;
3077

    
3078
/**
3079
 * four components are given, that's all.
3080
 * the last component is alpha
3081
 */
3082
typedef struct AVPicture {
3083
    uint8_t *data[4];
3084
    int linesize[4];       ///< number of bytes per line
3085
} AVPicture;
3086

    
3087
#if FF_API_PALETTE_CONTROL
3088
/**
3089
 * AVPaletteControl
3090
 * This structure defines a method for communicating palette changes
3091
 * between and demuxer and a decoder.
3092
 *
3093
 * @deprecated Use AVPacket to send palette changes instead.
3094
 * This is totally broken.
3095
 */
3096
#define AVPALETTE_SIZE 1024
3097
#define AVPALETTE_COUNT 256
3098
typedef struct AVPaletteControl {
3099

    
3100
    /* Demuxer sets this to 1 to indicate the palette has changed;
3101
     * decoder resets to 0. */
3102
    int palette_changed;
3103

    
3104
    /* 4-byte ARGB palette entries, stored in native byte order; note that
3105
     * the individual palette components should be on a 8-bit scale; if
3106
     * the palette data comes from an IBM VGA native format, the component
3107
     * data is probably 6 bits in size and needs to be scaled. */
3108
    unsigned int palette[AVPALETTE_COUNT];
3109

    
3110
} AVPaletteControl attribute_deprecated;
3111
#endif
3112

    
3113
enum AVSubtitleType {
3114
    SUBTITLE_NONE,
3115

    
3116
    SUBTITLE_BITMAP,                ///< A bitmap, pict will be set
3117

    
3118
    /**
3119
     * Plain text, the text field must be set by the decoder and is
3120
     * authoritative. ass and pict fields may contain approximations.
3121
     */
3122
    SUBTITLE_TEXT,
3123

    
3124
    /**
3125
     * Formatted text, the ass field must be set by the decoder and is
3126
     * authoritative. pict and text fields may contain approximations.
3127
     */
3128
    SUBTITLE_ASS,
3129
};
3130

    
3131
typedef struct AVSubtitleRect {
3132
    int x;         ///< top left corner  of pict, undefined when pict is not set
3133
    int y;         ///< top left corner  of pict, undefined when pict is not set
3134
    int w;         ///< width            of pict, undefined when pict is not set
3135
    int h;         ///< height           of pict, undefined when pict is not set
3136
    int nb_colors; ///< number of colors in pict, undefined when pict is not set
3137

    
3138
    /**
3139
     * data+linesize for the bitmap of this subtitle.
3140
     * can be set for text/ass as well once they where rendered
3141
     */
3142
    AVPicture pict;
3143
    enum AVSubtitleType type;
3144

    
3145
    char *text;                     ///< 0 terminated plain UTF-8 text
3146

    
3147
    /**
3148
     * 0 terminated ASS/SSA compatible event line.
3149
     * The pressentation of this is unaffected by the other values in this
3150
     * struct.
3151
     */
3152
    char *ass;
3153
} AVSubtitleRect;
3154

    
3155
typedef struct AVSubtitle {
3156
    uint16_t format; /* 0 = graphics */
3157
    uint32_t start_display_time; /* relative to packet pts, in ms */
3158
    uint32_t end_display_time; /* relative to packet pts, in ms */
3159
    unsigned num_rects;
3160
    AVSubtitleRect **rects;
3161
    int64_t pts;    ///< Same as packet pts, in AV_TIME_BASE
3162
} AVSubtitle;
3163

    
3164
/* packet functions */
3165

    
3166
/**
3167
 * @deprecated use NULL instead
3168
 */
3169
attribute_deprecated void av_destruct_packet_nofree(AVPacket *pkt);
3170

    
3171
/**
3172
 * Default packet destructor.
3173
 */
3174
void av_destruct_packet(AVPacket *pkt);
3175

    
3176
/**
3177
 * Initialize optional fields of a packet with default values.
3178
 *
3179
 * @param pkt packet
3180
 */
3181
void av_init_packet(AVPacket *pkt);
3182

    
3183
/**
3184
 * Allocate the payload of a packet and initialize its fields with
3185
 * default values.
3186
 *
3187
 * @param pkt packet
3188
 * @param size wanted payload size
3189
 * @return 0 if OK, AVERROR_xxx otherwise
3190
 */
3191
int av_new_packet(AVPacket *pkt, int size);
3192

    
3193
/**
3194
 * Reduce packet size, correctly zeroing padding
3195
 *
3196
 * @param pkt packet
3197
 * @param size new size
3198
 */
3199
void av_shrink_packet(AVPacket *pkt, int size);
3200

    
3201
/**
3202
 * Increase packet size, correctly zeroing padding
3203
 *
3204
 * @param pkt packet
3205
 * @param grow_by number of bytes by which to increase the size of the packet
3206
 */
3207
int av_grow_packet(AVPacket *pkt, int grow_by);
3208

    
3209
/**
3210
 * @warning This is a hack - the packet memory allocation stuff is broken. The
3211
 * packet is allocated if it was not really allocated.
3212
 */
3213
int av_dup_packet(AVPacket *pkt);
3214

    
3215
/**
3216
 * Free a packet.
3217
 *
3218
 * @param pkt packet to free
3219
 */
3220
void av_free_packet(AVPacket *pkt);
3221

    
3222
/* resample.c */
3223

    
3224
struct ReSampleContext;
3225
struct AVResampleContext;
3226

    
3227
typedef struct ReSampleContext ReSampleContext;
3228

    
3229
#if FF_API_AUDIO_OLD
3230
/**
3231
 * @deprecated Use av_audio_resample_init() instead.
3232
 */
3233
attribute_deprecated ReSampleContext *audio_resample_init(int output_channels, int input_channels,
3234
                                                          int output_rate, int input_rate);
3235
#endif
3236

    
3237
/**
3238
 *  Initialize audio resampling context.
3239
 *
3240
 * @param output_channels  number of output channels
3241
 * @param input_channels   number of input channels
3242
 * @param output_rate      output sample rate
3243
 * @param input_rate       input sample rate
3244
 * @param sample_fmt_out   requested output sample format
3245
 * @param sample_fmt_in    input sample format
3246
 * @param filter_length    length of each FIR filter in the filterbank relative to the cutoff frequency
3247
 * @param log2_phase_count log2 of the number of entries in the polyphase filterbank
3248
 * @param linear           if 1 then the used FIR filter will be linearly interpolated
3249
                           between the 2 closest, if 0 the closest will be used
3250
 * @param cutoff           cutoff frequency, 1.0 corresponds to half the output sampling rate
3251
 * @return allocated ReSampleContext, NULL if error occured
3252
 */
3253
ReSampleContext *av_audio_resample_init(int output_channels, int input_channels,
3254
                                        int output_rate, int input_rate,
3255
                                        enum AVSampleFormat sample_fmt_out,
3256
                                        enum AVSampleFormat sample_fmt_in,
3257
                                        int filter_length, int log2_phase_count,
3258
                                        int linear, double cutoff);
3259

    
3260
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
3261

    
3262
/**
3263
 * Free resample context s.
3264
 *
3265
 * @param s a non-NULL pointer to a resample context previously
3266
 * created with av_audio_resample_init()
3267
 */
3268
void audio_resample_close(ReSampleContext *s);
3269

    
3270

    
3271
/**
3272
 * Initialize an audio resampler.
3273
 * Note, if either rate is not an integer then simply scale both rates up so they are.
3274
 * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq
3275
 * @param log2_phase_count log2 of the number of entries in the polyphase filterbank
3276
 * @param linear If 1 then the used FIR filter will be linearly interpolated
3277
                 between the 2 closest, if 0 the closest will be used
3278
 * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate
3279
 */
3280
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
3281

    
3282
/**
3283
 * Resample an array of samples using a previously configured context.
3284
 * @param src an array of unconsumed samples
3285
 * @param consumed the number of samples of src which have been consumed are returned here
3286
 * @param src_size the number of unconsumed samples available
3287
 * @param dst_size the amount of space in samples available in dst
3288
 * @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.
3289
 * @return the number of samples written in dst or -1 if an error occurred
3290
 */
3291
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
3292

    
3293

    
3294
/**
3295
 * Compensate samplerate/timestamp drift. The compensation is done by changing
3296
 * the resampler parameters, so no audible clicks or similar distortions occur
3297
 * @param compensation_distance distance in output samples over which the compensation should be performed
3298
 * @param sample_delta number of output samples which should be output less
3299
 *
3300
 * example: av_resample_compensate(c, 10, 500)
3301
 * here instead of 510 samples only 500 samples would be output
3302
 *
3303
 * note, due to rounding the actual compensation might be slightly different,
3304
 * especially if the compensation_distance is large and the in_rate used during init is small
3305
 */
3306
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
3307
void av_resample_close(struct AVResampleContext *c);
3308

    
3309
/**
3310
 * Allocate memory for a picture.  Call avpicture_free to free it.
3311
 *
3312
 * @param picture the picture to be filled in
3313
 * @param pix_fmt the format of the picture
3314
 * @param width the width of the picture
3315
 * @param height the height of the picture
3316
 * @return zero if successful, a negative value if not
3317
 */
3318
int avpicture_alloc(AVPicture *picture, enum PixelFormat pix_fmt, int width, int height);
3319

    
3320
/**
3321
 * Free a picture previously allocated by avpicture_alloc().
3322
 *
3323
 * @param picture the AVPicture to be freed
3324
 */
3325
void avpicture_free(AVPicture *picture);
3326

    
3327
/**
3328
 * Fill in the AVPicture fields.
3329
 * The fields of the given AVPicture are filled in by using the 'ptr' address
3330
 * which points to the image data buffer. Depending on the specified picture
3331
 * format, one or multiple image data pointers and line sizes will be set.
3332
 * If a planar format is specified, several pointers will be set pointing to
3333
 * the different picture planes and the line sizes of the different planes
3334
 * will be stored in the lines_sizes array.
3335
 * Call with ptr == NULL to get the required size for the ptr buffer.
3336
 *
3337
 * @param picture AVPicture whose fields are to be filled in
3338
 * @param ptr Buffer which will contain or contains the actual image data
3339
 * @param pix_fmt The format in which the picture data is stored.
3340
 * @param width the width of the image in pixels
3341
 * @param height the height of the image in pixels
3342
 * @return size of the image data in bytes
3343
 */
3344
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
3345
                   enum PixelFormat pix_fmt, int width, int height);
3346
int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
3347
                     unsigned char *dest, int dest_size);
3348

    
3349
/**
3350
 * Calculate the size in bytes that a picture of the given width and height
3351
 * would occupy if stored in the given picture format.
3352
 * Note that this returns the size of a compact representation as generated
3353
 * by avpicture_layout, which can be smaller than the size required for e.g.
3354
 * avpicture_fill.
3355
 *
3356
 * @param pix_fmt the given picture format
3357
 * @param width the width of the image
3358
 * @param height the height of the image
3359
 * @return Image data size in bytes or -1 on error (e.g. too large dimensions).
3360
 */
3361
int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height);
3362
void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift);
3363
const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt);
3364
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
3365

    
3366
#if LIBAVCODEC_VERSION_MAJOR < 53
3367
/**
3368
 * Return the pixel format corresponding to the name name.
3369
 *
3370
 * If there is no pixel format with name name, then look for a
3371
 * pixel format with the name corresponding to the native endian
3372
 * format of name.
3373
 * For example in a little-endian system, first look for "gray16",
3374
 * then for "gray16le".
3375
 *
3376
 * Finally if no pixel format has been found, return PIX_FMT_NONE.
3377
 *
3378
 * @deprecated Deprecated in favor of av_get_pix_fmt().
3379
 */
3380
attribute_deprecated enum PixelFormat avcodec_get_pix_fmt(const char* name);
3381
#endif
3382

    
3383
/**
3384
 * Return a value representing the fourCC code associated to the
3385
 * pixel format pix_fmt, or 0 if no associated fourCC code can be
3386
 * found.
3387
 */
3388
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat pix_fmt);
3389

    
3390
/**
3391
 * Put a string representing the codec tag codec_tag in buf.
3392
 *
3393
 * @param buf_size size in bytes of buf
3394
 * @return the length of the string that would have been generated if
3395
 * enough space had been available, excluding the trailing null
3396
 */
3397
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag);
3398

    
3399
#define FF_LOSS_RESOLUTION  0x0001 /**< loss due to resolution change */
3400
#define FF_LOSS_DEPTH       0x0002 /**< loss due to color depth change */
3401
#define FF_LOSS_COLORSPACE  0x0004 /**< loss due to color space conversion */
3402
#define FF_LOSS_ALPHA       0x0008 /**< loss of alpha bits */
3403
#define FF_LOSS_COLORQUANT  0x0010 /**< loss due to color quantization */
3404
#define FF_LOSS_CHROMA      0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */
3405

    
3406
/**
3407
 * Compute what kind of losses will occur when converting from one specific
3408
 * pixel format to another.
3409
 * When converting from one pixel format to another, information loss may occur.
3410
 * For example, when converting from RGB24 to GRAY, the color information will
3411
 * be lost. Similarly, other losses occur when converting from some formats to
3412
 * other formats. These losses can involve loss of chroma, but also loss of
3413
 * resolution, loss of color depth, loss due to the color space conversion, loss
3414
 * of the alpha bits or loss due to color quantization.
3415
 * avcodec_get_fix_fmt_loss() informs you about the various types of losses
3416
 * which will occur when converting from one pixel format to another.
3417
 *
3418
 * @param[in] dst_pix_fmt destination pixel format
3419
 * @param[in] src_pix_fmt source pixel format
3420
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
3421
 * @return Combination of flags informing you what kind of losses will occur.
3422
 */
3423
int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
3424
                             int has_alpha);
3425

    
3426
/**
3427
 * Find the best pixel format to convert to given a certain source pixel
3428
 * format.  When converting from one pixel format to another, information loss
3429
 * may occur.  For example, when converting from RGB24 to GRAY, the color
3430
 * information will be lost. Similarly, other losses occur when converting from
3431
 * some formats to other formats. avcodec_find_best_pix_fmt() searches which of
3432
 * the given pixel formats should be used to suffer the least amount of loss.
3433
 * The pixel formats from which it chooses one, are determined by the
3434
 * pix_fmt_mask parameter.
3435
 *
3436
 * @code
3437
 * src_pix_fmt = PIX_FMT_YUV420P;
3438
 * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24);
3439
 * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss);
3440
 * @endcode
3441
 *
3442
 * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from
3443
 * @param[in] src_pix_fmt source pixel format
3444
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
3445
 * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
3446
 * @return The best pixel format to convert to or -1 if none was found.
3447
 */
3448
enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
3449
                              int has_alpha, int *loss_ptr);
3450

    
3451
#if LIBAVCODEC_VERSION_MAJOR < 53
3452
/**
3453
 * @deprecated Use av_get_pix_fmt_string() instead.
3454
 */
3455
attribute_deprecated
3456
void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt);
3457
#endif
3458

    
3459
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
3460
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
3461

    
3462
/**
3463
 * Tell if an image really has transparent alpha values.
3464
 * @return ored mask of FF_ALPHA_xxx constants
3465
 */
3466
int img_get_alpha_info(const AVPicture *src,
3467
                       enum PixelFormat pix_fmt, int width, int height);
3468

    
3469
/* deinterlace a picture */
3470
/* deinterlace - if not supported return -1 */
3471
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
3472
                          enum PixelFormat pix_fmt, int width, int height);
3473

    
3474
/* external high level API */
3475

    
3476
/**
3477
 * If c is NULL, returns the first registered codec,
3478
 * if c is non-NULL, returns the next registered codec after c,
3479
 * or NULL if c is the last one.
3480
 */
3481
AVCodec *av_codec_next(AVCodec *c);
3482

    
3483
/**
3484
 * Return the LIBAVCODEC_VERSION_INT constant.
3485
 */
3486
unsigned avcodec_version(void);
3487

    
3488
/**
3489
 * Return the libavcodec build-time configuration.
3490
 */
3491
const char *avcodec_configuration(void);
3492

    
3493
/**
3494
 * Return the libavcodec license.
3495
 */
3496
const char *avcodec_license(void);
3497

    
3498
/**
3499
 * Initialize libavcodec.
3500
 *
3501
 * @warning This function must be called before any other libavcodec
3502
 * function.
3503
 */
3504
void avcodec_init(void);
3505

    
3506
#if LIBAVCODEC_VERSION_MAJOR < 53
3507
/**
3508
 * @deprecated Deprecated in favor of avcodec_register().
3509
 */
3510
attribute_deprecated void register_avcodec(AVCodec *codec);
3511
#endif
3512

    
3513
/**
3514
 * Register the codec codec and initialize libavcodec.
3515
 *
3516
 * @see avcodec_init()
3517
 */
3518
void avcodec_register(AVCodec *codec);
3519

    
3520
/**
3521
 * Find a registered encoder with a matching codec ID.
3522
 *
3523
 * @param id CodecID of the requested encoder
3524
 * @return An encoder if one was found, NULL otherwise.
3525
 */
3526
AVCodec *avcodec_find_encoder(enum CodecID id);
3527

    
3528
/**
3529
 * Find a registered encoder with the specified name.
3530
 *
3531
 * @param name name of the requested encoder
3532
 * @return An encoder if one was found, NULL otherwise.
3533
 */
3534
AVCodec *avcodec_find_encoder_by_name(const char *name);
3535

    
3536
/**
3537
 * Find a registered decoder with a matching codec ID.
3538
 *
3539
 * @param id CodecID of the requested decoder
3540
 * @return A decoder if one was found, NULL otherwise.
3541
 */
3542
AVCodec *avcodec_find_decoder(enum CodecID id);
3543

    
3544
/**
3545
 * Find a registered decoder with the specified name.
3546
 *
3547
 * @param name name of the requested decoder
3548
 * @return A decoder if one was found, NULL otherwise.
3549
 */
3550
AVCodec *avcodec_find_decoder_by_name(const char *name);
3551
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
3552

    
3553
/**
3554
 * Return a name for the specified profile, if available.
3555
 *
3556
 * @param codec the codec that is searched for the given profile
3557
 * @param profile the profile value for which a name is requested
3558
 * @return A name for the profile if found, NULL otherwise.
3559
 */
3560
const char *av_get_profile_name(const AVCodec *codec, int profile);
3561

    
3562
/**
3563
 * Set the fields of the given AVCodecContext to default values.
3564
 *
3565
 * @param s The AVCodecContext of which the fields should be set to default values.
3566
 */
3567
void avcodec_get_context_defaults(AVCodecContext *s);
3568

    
3569
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
3570
 *  we WILL change its arguments and name a few times! */
3571
void avcodec_get_context_defaults2(AVCodecContext *s, enum AVMediaType);
3572

    
3573
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
3574
 *  we WILL change its arguments and name a few times! */
3575
int avcodec_get_context_defaults3(AVCodecContext *s, AVCodec *codec);
3576

    
3577
/**
3578
 * Allocate an AVCodecContext and set its fields to default values.  The
3579
 * resulting struct can be deallocated by simply calling av_free().
3580
 *
3581
 * @return An AVCodecContext filled with default values or NULL on failure.
3582
 * @see avcodec_get_context_defaults
3583
 */
3584
AVCodecContext *avcodec_alloc_context(void);
3585

    
3586
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
3587
 *  we WILL change its arguments and name a few times! */
3588
AVCodecContext *avcodec_alloc_context2(enum AVMediaType);
3589

    
3590
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
3591
 *  we WILL change its arguments and name a few times! */
3592
AVCodecContext *avcodec_alloc_context3(AVCodec *codec);
3593

    
3594
/**
3595
 * Copy the settings of the source AVCodecContext into the destination
3596
 * AVCodecContext. The resulting destination codec context will be
3597
 * unopened, i.e. you are required to call avcodec_open() before you
3598
 * can use this AVCodecContext to decode/encode video/audio data.
3599
 *
3600
 * @param dest target codec context, should be initialized with
3601
 *             avcodec_alloc_context(), but otherwise uninitialized
3602
 * @param src source codec context
3603
 * @return AVERROR() on error (e.g. memory allocation error), 0 on success
3604
 */
3605
int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src);
3606

    
3607
/**
3608
 * Set the fields of the given AVFrame to default values.
3609
 *
3610
 * @param pic The AVFrame of which the fields should be set to default values.
3611
 */
3612
void avcodec_get_frame_defaults(AVFrame *pic);
3613

    
3614
/**
3615
 * Allocate an AVFrame and set its fields to default values.  The resulting
3616
 * struct can be deallocated by simply calling av_free().
3617
 *
3618
 * @return An AVFrame filled with default values or NULL on failure.
3619
 * @see avcodec_get_frame_defaults
3620
 */
3621
AVFrame *avcodec_alloc_frame(void);
3622

    
3623
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
3624
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
3625
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
3626

    
3627
/**
3628
 * Return the amount of padding in pixels which the get_buffer callback must
3629
 * provide around the edge of the image for codecs which do not have the
3630
 * CODEC_FLAG_EMU_EDGE flag.
3631
 *
3632
 * @return Required padding in pixels.
3633
 */
3634
unsigned avcodec_get_edge_width(void);
3635
/**
3636
 * Modify width and height values so that they will result in a memory
3637
 * buffer that is acceptable for the codec if you do not use any horizontal
3638
 * padding.
3639
 *
3640
 * May only be used if a codec with CODEC_CAP_DR1 has been opened.
3641
 * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased
3642
 * according to avcodec_get_edge_width() before.
3643
 */
3644
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
3645
/**
3646
 * Modify width and height values so that they will result in a memory
3647
 * buffer that is acceptable for the codec if you also ensure that all
3648
 * line sizes are a multiple of the respective linesize_align[i].
3649
 *
3650
 * May only be used if a codec with CODEC_CAP_DR1 has been opened.
3651
 * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased
3652
 * according to avcodec_get_edge_width() before.
3653
 */
3654
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
3655
                               int linesize_align[4]);
3656

    
3657
#if LIBAVCODEC_VERSION_MAJOR < 53
3658
/**
3659
 * @deprecated Deprecated in favor of av_check_image_size().
3660
 */
3661
attribute_deprecated
3662
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
3663
#endif
3664

    
3665
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
3666

    
3667
#if LIBAVCODEC_VERSION_MAJOR < 53
3668
/**
3669
 * @deprecated Set s->thread_count before calling avcodec_open() instead of calling this.
3670
 */
3671
attribute_deprecated
3672
int avcodec_thread_init(AVCodecContext *s, int thread_count);
3673
void avcodec_thread_free(AVCodecContext *s);
3674
#endif
3675
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size);
3676
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int, int),void *arg, int *ret, int count);
3677
//FIXME func typedef
3678

    
3679
/**
3680
 * Initialize the AVCodecContext to use the given AVCodec. Prior to using this
3681
 * function the context has to be allocated.
3682
 *
3683
 * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
3684
 * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
3685
 * retrieving a codec.
3686
 *
3687
 * @warning This function is not thread safe!
3688
 *
3689
 * @code
3690
 * avcodec_register_all();
3691
 * codec = avcodec_find_decoder(CODEC_ID_H264);
3692
 * if (!codec)
3693
 *     exit(1);
3694
 *
3695
 * context = avcodec_alloc_context();
3696
 *
3697
 * if (avcodec_open(context, codec) < 0)
3698
 *     exit(1);
3699
 * @endcode
3700
 *
3701
 * @param avctx The context which will be set up to use the given codec.
3702
 * @param codec The codec to use within the context.
3703
 * @return zero on success, a negative value on error
3704
 * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder
3705
 */
3706
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
3707

    
3708
#if FF_API_AUDIO_OLD
3709
/**
3710
 * Decode an audio frame from buf into samples.
3711
 * Wrapper function which calls avcodec_decode_audio3.
3712
 *
3713
 * @deprecated Use avcodec_decode_audio3 instead.
3714
 * @param avctx the codec context
3715
 * @param[out] samples the output buffer
3716
 * @param[in,out] frame_size_ptr the output buffer size in bytes
3717
 * @param[in] buf the input buffer
3718
 * @param[in] buf_size the input buffer size in bytes
3719
 * @return On error a negative value is returned, otherwise the number of bytes
3720
 * used or zero if no frame could be decompressed.
3721
 */
3722
attribute_deprecated int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
3723
                         int *frame_size_ptr,
3724
                         const uint8_t *buf, int buf_size);
3725
#endif
3726

    
3727
/**
3728
 * Decode the audio frame of size avpkt->size from avpkt->data into samples.
3729
 * Some decoders may support multiple frames in a single AVPacket, such
3730
 * decoders would then just decode the first frame. In this case,
3731
 * avcodec_decode_audio3 has to be called again with an AVPacket that contains
3732
 * the remaining data in order to decode the second frame etc.
3733
 * If no frame
3734
 * could be outputted, frame_size_ptr is zero. Otherwise, it is the
3735
 * decompressed frame size in bytes.
3736
 *
3737
 * @warning You must set frame_size_ptr to the allocated size of the
3738
 * output buffer before calling avcodec_decode_audio3().
3739
 *
3740
 * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than
3741
 * the actual read bytes because some optimized bitstream readers read 32 or 64
3742
 * bits at once and could read over the end.
3743
 *
3744
 * @warning The end of the input buffer avpkt->data should be set to 0 to ensure that
3745
 * no overreading happens for damaged MPEG streams.
3746
 *
3747
 * @note You might have to align the input buffer avpkt->data and output buffer
3748
 * samples. The alignment requirements depend on the CPU: On some CPUs it isn't
3749
 * necessary at all, on others it won't work at all if not aligned and on others
3750
 * it will work but it will have an impact on performance.
3751
 *
3752
 * In practice, avpkt->data should have 4 byte alignment at minimum and
3753
 * samples should be 16 byte aligned unless the CPU doesn't need it
3754
 * (AltiVec and SSE do).
3755
 *
3756
 * @param avctx the codec context
3757
 * @param[out] samples the output buffer, sample type in avctx->sample_fmt
3758
 * @param[in,out] frame_size_ptr the output buffer size in bytes
3759
 * @param[in] avpkt The input AVPacket containing the input buffer.
3760
 *            You can create such packet with av_init_packet() and by then setting
3761
 *            data and size, some decoders might in addition need other fields.
3762
 *            All decoders are designed to use the least fields possible though.
3763
 * @return On error a negative value is returned, otherwise the number of bytes
3764
 * used or zero if no frame data was decompressed (used) from the input AVPacket.
3765
 */
3766
int avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
3767
                         int *frame_size_ptr,
3768
                         AVPacket *avpkt);
3769

    
3770
#if FF_API_VIDEO_OLD
3771
/**
3772
 * Decode a video frame from buf into picture.
3773
 * Wrapper function which calls avcodec_decode_video2.
3774
 *
3775
 * @deprecated Use avcodec_decode_video2 instead.
3776
 * @param avctx the codec context
3777
 * @param[out] picture The AVFrame in which the decoded video frame will be stored.
3778
 * @param[in] buf the input buffer
3779
 * @param[in] buf_size the size of the input buffer in bytes
3780
 * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
3781
 * @return On error a negative value is returned, otherwise the number of bytes
3782
 * used or zero if no frame could be decompressed.
3783
 */
3784
attribute_deprecated int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
3785
                         int *got_picture_ptr,
3786
                         const uint8_t *buf, int buf_size);
3787
#endif
3788

    
3789
/**
3790
 * Decode the video frame of size avpkt->size from avpkt->data into picture.
3791
 * Some decoders may support multiple frames in a single AVPacket, such
3792
 * decoders would then just decode the first frame.
3793
 *
3794
 * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than
3795
 * the actual read bytes because some optimized bitstream readers read 32 or 64
3796
 * bits at once and could read over the end.
3797
 *
3798
 * @warning The end of the input buffer buf should be set to 0 to ensure that
3799
 * no overreading happens for damaged MPEG streams.
3800
 *
3801
 * @note You might have to align the input buffer avpkt->data.
3802
 * The alignment requirements depend on the CPU: on some CPUs it isn't
3803
 * necessary at all, on others it won't work at all if not aligned and on others
3804
 * it will work but it will have an impact on performance.
3805
 *
3806
 * In practice, avpkt->data should have 4 byte alignment at minimum.
3807
 *
3808
 * @note Some codecs have a delay between input and output, these need to be
3809
 * fed with avpkt->data=NULL, avpkt->size=0 at the end to return the remaining frames.
3810
 *
3811
 * @param avctx the codec context
3812
 * @param[out] picture The AVFrame in which the decoded video frame will be stored.
3813
 *             Use avcodec_alloc_frame to get an AVFrame, the codec will
3814
 *             allocate memory for the actual bitmap.
3815
 *             with default get/release_buffer(), the decoder frees/reuses the bitmap as it sees fit.
3816
 *             with overridden get/release_buffer() (needs CODEC_CAP_DR1) the user decides into what buffer the decoder
3817
 *                   decodes and the decoder tells the user once it does not need the data anymore,
3818
 *                   the user app can at this point free/reuse/keep the memory as it sees fit.
3819
 *
3820
 * @param[in] avpkt The input AVpacket containing the input buffer.
3821
 *            You can create such packet with av_init_packet() and by then setting
3822
 *            data and size, some decoders might in addition need other fields like
3823
 *            flags&AV_PKT_FLAG_KEY. All decoders are designed to use the least
3824
 *            fields possible.
3825
 * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
3826
 * @return On error a negative value is returned, otherwise the number of bytes
3827
 * used or zero if no frame could be decompressed.
3828
 */
3829
int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
3830
                         int *got_picture_ptr,
3831
                         AVPacket *avpkt);
3832

    
3833
#if FF_API_SUBTITLE_OLD
3834
/* Decode a subtitle message. Return -1 if error, otherwise return the
3835
 * number of bytes used. If no subtitle could be decompressed,
3836
 * got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
3837
attribute_deprecated int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
3838
                            int *got_sub_ptr,
3839
                            const uint8_t *buf, int buf_size);
3840
#endif
3841

    
3842
/**
3843
 * Decode a subtitle message.
3844
 * Return a negative value on error, otherwise return the number of bytes used.
3845
 * If no subtitle could be decompressed, got_sub_ptr is zero.
3846
 * Otherwise, the subtitle is stored in *sub.
3847
 * Note that CODEC_CAP_DR1 is not available for subtitle codecs. This is for
3848
 * simplicity, because the performance difference is expect to be negligible
3849
 * and reusing a get_buffer written for video codecs would probably perform badly
3850
 * due to a potentially very different allocation pattern.
3851
 *
3852
 * @param avctx the codec context
3853
 * @param[out] sub The AVSubtitle in which the decoded subtitle will be stored, must be
3854
                   freed with avsubtitle_free if *got_sub_ptr is set.
3855
 * @param[in,out] got_sub_ptr Zero if no subtitle could be decompressed, otherwise, it is nonzero.
3856
 * @param[in] avpkt The input AVPacket containing the input buffer.
3857
 */
3858
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
3859
                            int *got_sub_ptr,
3860
                            AVPacket *avpkt);
3861

    
3862
/**
3863
 * Frees all allocated data in the given subtitle struct.
3864
 *
3865
 * @param sub AVSubtitle to free.
3866
 */
3867
void avsubtitle_free(AVSubtitle *sub);
3868

    
3869
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
3870
                        int *data_size_ptr,
3871
                        uint8_t *buf, int buf_size);
3872

    
3873
/**
3874
 * Encode an audio frame from samples into buf.
3875
 *
3876
 * @note The output buffer should be at least FF_MIN_BUFFER_SIZE bytes large.
3877
 * However, for PCM audio the user will know how much space is needed
3878
 * because it depends on the value passed in buf_size as described
3879
 * below. In that case a lower value can be used.
3880
 *
3881
 * @param avctx the codec context
3882
 * @param[out] buf the output buffer
3883
 * @param[in] buf_size the output buffer size
3884
 * @param[in] samples the input buffer containing the samples
3885
 * The number of samples read from this buffer is frame_size*channels,
3886
 * both of which are defined in avctx.
3887
 * For PCM audio the number of samples read from samples is equal to
3888
 * buf_size * input_sample_size / output_sample_size.
3889
 * @return On error a negative value is returned, on success zero or the number
3890
 * of bytes used to encode the data read from the input buffer.
3891
 */
3892
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
3893
                         const short *samples);
3894

    
3895
/**
3896
 * Encode a video frame from pict into buf.
3897
 * The input picture should be
3898
 * stored using a specific format, namely avctx.pix_fmt.
3899
 *
3900
 * @param avctx the codec context
3901
 * @param[out] buf the output buffer for the bitstream of encoded frame
3902
 * @param[in] buf_size the size of the output buffer in bytes
3903
 * @param[in] pict the input picture to encode
3904
 * @return On error a negative value is returned, on success zero or the number
3905
 * of bytes used from the output buffer.
3906
 */
3907
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
3908
                         const AVFrame *pict);
3909
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
3910
                            const AVSubtitle *sub);
3911

    
3912
int avcodec_close(AVCodecContext *avctx);
3913

    
3914
/**
3915
 * Register all the codecs, parsers and bitstream filters which were enabled at
3916
 * configuration time. If you do not call this function you can select exactly
3917
 * which formats you want to support, by using the individual registration
3918
 * functions.
3919
 *
3920
 * @see avcodec_register
3921
 * @see av_register_codec_parser
3922
 * @see av_register_bitstream_filter
3923
 */
3924
void avcodec_register_all(void);
3925

    
3926
/**
3927
 * Flush buffers, should be called when seeking or when switching to a different stream.
3928
 */
3929
void avcodec_flush_buffers(AVCodecContext *avctx);
3930

    
3931
void avcodec_default_free_buffers(AVCodecContext *s);
3932

    
3933
/* misc useful functions */
3934

    
3935
/**
3936
 * Return a single letter to describe the given picture type pict_type.
3937
 *
3938
 * @param[in] pict_type the picture type
3939
 * @return A single character representing the picture type.
3940
 */
3941
char av_get_pict_type_char(int pict_type);
3942

    
3943
/**
3944
 * Return codec bits per sample.
3945
 *
3946
 * @param[in] codec_id the codec
3947
 * @return Number of bits per sample or zero if unknown for the given codec.
3948
 */
3949
int av_get_bits_per_sample(enum CodecID codec_id);
3950

    
3951
#if FF_API_OLD_SAMPLE_FMT
3952
/**
3953
 * @deprecated Use av_get_bits_per_sample_fmt() instead.
3954
 */
3955
attribute_deprecated
3956
int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt);
3957
#endif
3958

    
3959
/* frame parsing */
3960
typedef struct AVCodecParserContext {
3961
    void *priv_data;
3962
    struct AVCodecParser *parser;
3963
    int64_t frame_offset; /* offset of the current frame */
3964
    int64_t cur_offset; /* current offset
3965
                           (incremented by each av_parser_parse()) */
3966
    int64_t next_frame_offset; /* offset of the next frame */
3967
    /* video info */
3968
    int pict_type; /* XXX: Put it back in AVCodecContext. */
3969
    /**
3970
     * This field is used for proper frame duration computation in lavf.
3971
     * It signals, how much longer the frame duration of the current frame
3972
     * is compared to normal frame duration.
3973
     *
3974
     * frame_duration = (1 + repeat_pict) * time_base
3975
     *
3976
     * It is used by codecs like H.264 to display telecined material.
3977
     */
3978
    int repeat_pict; /* XXX: Put it back in AVCodecContext. */
3979
    int64_t pts;     /* pts of the current frame */
3980
    int64_t dts;     /* dts of the current frame */
3981

    
3982
    /* private data */
3983
    int64_t last_pts;
3984
    int64_t last_dts;
3985
    int fetch_timestamp;
3986

    
3987
#define AV_PARSER_PTS_NB 4
3988
    int cur_frame_start_index;
3989
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
3990
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
3991
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
3992

    
3993
    int flags;
3994
#define PARSER_FLAG_COMPLETE_FRAMES           0x0001
3995
#define PARSER_FLAG_ONCE                      0x0002
3996
/// Set if the parser has a valid file offset
3997
#define PARSER_FLAG_FETCHED_OFFSET            0x0004
3998

    
3999
    int64_t offset;      ///< byte offset from starting packet start
4000
    int64_t cur_frame_end[AV_PARSER_PTS_NB];
4001

    
4002
    /*!
4003
     * Set by parser to 1 for key frames and 0 for non-key frames.
4004
     * It is initialized to -1, so if the parser doesn't set this flag,
4005
     * old-style fallback using FF_I_TYPE picture type as key frames
4006
     * will be used.
4007
     */
4008
    int key_frame;
4009

    
4010
    /**
4011
     * Time difference in stream time base units from the pts of this
4012
     * packet to the point at which the output from the decoder has converged
4013
     * independent from the availability of previous frames. That is, the
4014
     * frames are virtually identical no matter if decoding started from
4015
     * the very first frame or from this keyframe.
4016
     * Is AV_NOPTS_VALUE if unknown.
4017
     * This field is not the display duration of the current frame.
4018
     * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY
4019
     * set.
4020
     *
4021
     * The purpose of this field is to allow seeking in streams that have no
4022
     * keyframes in the conventional sense. It corresponds to the
4023
     * recovery point SEI in H.264 and match_time_delta in NUT. It is also
4024
     * essential for some types of subtitle streams to ensure that all
4025
     * subtitles are correctly displayed after seeking.
4026
     */
4027
    int64_t convergence_duration;
4028

    
4029
    // Timestamp generation support:
4030
    /**
4031
     * Synchronization point for start of timestamp generation.
4032
     *
4033
     * Set to >0 for sync point, 0 for no sync point and <0 for undefined
4034
     * (default).
4035
     *
4036
     * For example, this corresponds to presence of H.264 buffering period
4037
     * SEI message.
4038
     */
4039
    int dts_sync_point;
4040

    
4041
    /**
4042
     * Offset of the current timestamp against last timestamp sync point in
4043
     * units of AVCodecContext.time_base.
4044
     *
4045
     * Set to INT_MIN when dts_sync_point unused. Otherwise, it must
4046
     * contain a valid timestamp offset.
4047
     *
4048
     * Note that the timestamp of sync point has usually a nonzero
4049
     * dts_ref_dts_delta, which refers to the previous sync point. Offset of
4050
     * the next frame after timestamp sync point will be usually 1.
4051
     *
4052
     * For example, this corresponds to H.264 cpb_removal_delay.
4053
     */
4054
    int dts_ref_dts_delta;
4055

    
4056
    /**
4057
     * Presentation delay of current frame in units of AVCodecContext.time_base.
4058
     *
4059
     * Set to INT_MIN when dts_sync_point unused. Otherwise, it must
4060
     * contain valid non-negative timestamp delta (presentation time of a frame
4061
     * must not lie in the past).
4062
     *
4063
     * This delay represents the difference between decoding and presentation
4064
     * time of the frame.
4065
     *
4066
     * For example, this corresponds to H.264 dpb_output_delay.
4067
     */
4068
    int pts_dts_delta;
4069

    
4070
    /**
4071
     * Position of the packet in file.
4072
     *
4073
     * Analogous to cur_frame_pts/dts
4074
     */
4075
    int64_t cur_frame_pos[AV_PARSER_PTS_NB];
4076

    
4077
    /**
4078
     * Byte position of currently parsed frame in stream.
4079
     */
4080
    int64_t pos;
4081

    
4082
    /**
4083
     * Previous frame byte position.
4084
     */
4085
    int64_t last_pos;
4086
} AVCodecParserContext;
4087

    
4088
typedef struct AVCodecParser {
4089
    int codec_ids[5]; /* several codec IDs are permitted */
4090
    int priv_data_size;
4091
    int (*parser_init)(AVCodecParserContext *s);
4092
    int (*parser_parse)(AVCodecParserContext *s,
4093
                        AVCodecContext *avctx,
4094
                        const uint8_t **poutbuf, int *poutbuf_size,
4095
                        const uint8_t *buf, int buf_size);
4096
    void (*parser_close)(AVCodecParserContext *s);
4097
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
4098
    struct AVCodecParser *next;
4099
} AVCodecParser;
4100

    
4101
AVCodecParser *av_parser_next(AVCodecParser *c);
4102

    
4103
void av_register_codec_parser(AVCodecParser *parser);
4104
AVCodecParserContext *av_parser_init(int codec_id);
4105

    
4106
#if LIBAVCODEC_VERSION_MAJOR < 53
4107
attribute_deprecated
4108
int av_parser_parse(AVCodecParserContext *s,
4109
                    AVCodecContext *avctx,
4110
                    uint8_t **poutbuf, int *poutbuf_size,
4111
                    const uint8_t *buf, int buf_size,
4112
                    int64_t pts, int64_t dts);
4113
#endif
4114

    
4115
/**
4116
 * Parse a packet.
4117
 *
4118
 * @param s             parser context.
4119
 * @param avctx         codec context.
4120
 * @param poutbuf       set to pointer to parsed buffer or NULL if not yet finished.
4121
 * @param poutbuf_size  set to size of parsed buffer or zero if not yet finished.
4122
 * @param buf           input buffer.
4123
 * @param buf_size      input length, to signal EOF, this should be 0 (so that the last frame can be output).
4124
 * @param pts           input presentation timestamp.
4125
 * @param dts           input decoding timestamp.
4126
 * @param pos           input byte position in stream.
4127
 * @return the number of bytes of the input bitstream used.
4128
 *
4129
 * Example:
4130
 * @code
4131
 *   while(in_len){
4132
 *       len = av_parser_parse2(myparser, AVCodecContext, &data, &size,
4133
 *                                        in_data, in_len,
4134
 *                                        pts, dts, pos);
4135
 *       in_data += len;
4136
 *       in_len  -= len;
4137
 *
4138
 *       if(size)
4139
 *          decode_frame(data, size);
4140
 *   }
4141
 * @endcode
4142
 */
4143
int av_parser_parse2(AVCodecParserContext *s,
4144
                     AVCodecContext *avctx,
4145
                     uint8_t **poutbuf, int *poutbuf_size,
4146
                     const uint8_t *buf, int buf_size,
4147
                     int64_t pts, int64_t dts,
4148
                     int64_t pos);
4149

    
4150
int av_parser_change(AVCodecParserContext *s,
4151
                     AVCodecContext *avctx,
4152
                     uint8_t **poutbuf, int *poutbuf_size,
4153
                     const uint8_t *buf, int buf_size, int keyframe);
4154
void av_parser_close(AVCodecParserContext *s);
4155

    
4156

    
4157
typedef struct AVBitStreamFilterContext {
4158
    void *priv_data;
4159
    struct AVBitStreamFilter *filter;
4160
    AVCodecParserContext *parser;
4161
    struct AVBitStreamFilterContext *next;
4162
} AVBitStreamFilterContext;
4163

    
4164

    
4165
typedef struct AVBitStreamFilter {
4166
    const char *name;
4167
    int priv_data_size;
4168
    int (*filter)(AVBitStreamFilterContext *bsfc,
4169
                  AVCodecContext *avctx, const char *args,
4170
                  uint8_t **poutbuf, int *poutbuf_size,
4171
                  const uint8_t *buf, int buf_size, int keyframe);
4172
    void (*close)(AVBitStreamFilterContext *bsfc);
4173
    struct AVBitStreamFilter *next;
4174
} AVBitStreamFilter;
4175

    
4176
void av_register_bitstream_filter(AVBitStreamFilter *bsf);
4177
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
4178
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
4179
                               AVCodecContext *avctx, const char *args,
4180
                               uint8_t **poutbuf, int *poutbuf_size,
4181
                               const uint8_t *buf, int buf_size, int keyframe);
4182
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
4183

    
4184
AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f);
4185

    
4186
/* memory */
4187

    
4188
/**
4189
 * Reallocate the given block if it is not large enough, otherwise do nothing.
4190
 *
4191
 * @see av_realloc
4192
 */
4193
void *av_fast_realloc(void *ptr, unsigned int *size, FF_INTERNALC_MEM_TYPE min_size);
4194

    
4195
/**
4196
 * Allocate a buffer, reusing the given one if large enough.
4197
 *
4198
 * Contrary to av_fast_realloc the current buffer contents might not be
4199
 * preserved and on error the old buffer is freed, thus no special
4200
 * handling to avoid memleaks is necessary.
4201
 *
4202
 * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer
4203
 * @param size size of the buffer *ptr points to
4204
 * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and
4205
 *                 *size 0 if an error occurred.
4206
 */
4207
void av_fast_malloc(void *ptr, unsigned int *size, FF_INTERNALC_MEM_TYPE min_size);
4208

    
4209
#if LIBAVCODEC_VERSION_MAJOR < 53
4210
/**
4211
 * @deprecated Deprecated in favor of av_image_copy().
4212
 */
4213
attribute_deprecated
4214
void av_picture_data_copy(uint8_t *dst_data[4], int dst_linesize[4],
4215
                          uint8_t *src_data[4], int src_linesize[4],
4216
                          enum PixelFormat pix_fmt, int width, int height);
4217
#endif
4218

    
4219
/**
4220
 * Copy image src to dst. Wraps av_picture_data_copy() above.
4221
 */
4222
void av_picture_copy(AVPicture *dst, const AVPicture *src,
4223
                     enum PixelFormat pix_fmt, int width, int height);
4224

    
4225
/**
4226
 * Crop image top and left side.
4227
 */
4228
int av_picture_crop(AVPicture *dst, const AVPicture *src,
4229
                    enum PixelFormat pix_fmt, int top_band, int left_band);
4230

    
4231
/**
4232
 * Pad image.
4233
 */
4234
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, enum PixelFormat pix_fmt,
4235
            int padtop, int padbottom, int padleft, int padright, int *color);
4236

    
4237
/**
4238
 * Encode extradata length to a buffer. Used by xiph codecs.
4239
 *
4240
 * @param s buffer to write to; must be at least (v/255+1) bytes long
4241
 * @param v size of extradata in bytes
4242
 * @return number of bytes written to the buffer.
4243
 */
4244
unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
4245

    
4246
#if LIBAVCODEC_VERSION_MAJOR < 53
4247
/**
4248
 * Parse str and put in width_ptr and height_ptr the detected values.
4249
 *
4250
 * @deprecated Deprecated in favor of av_parse_video_size().
4251
 */
4252
attribute_deprecated int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str);
4253

    
4254
/**
4255
 * Parse str and store the detected values in *frame_rate.
4256
 *
4257
 * @deprecated Deprecated in favor of av_parse_video_rate().
4258
 */
4259
attribute_deprecated int av_parse_video_frame_rate(AVRational *frame_rate, const char *str);
4260
#endif
4261

    
4262
/**
4263
 * Logs a generic warning message about a missing feature. This function is
4264
 * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.)
4265
 * only, and would normally not be used by applications.
4266
 * @param[in] avc a pointer to an arbitrary struct of which the first field is
4267
 * a pointer to an AVClass struct
4268
 * @param[in] feature string containing the name of the missing feature
4269
 * @param[in] want_sample indicates if samples are wanted which exhibit this feature.
4270
 * If want_sample is non-zero, additional verbage will be added to the log
4271
 * message which tells the user how to report samples to the development
4272
 * mailing list.
4273
 */
4274
void av_log_missing_feature(void *avc, const char *feature, int want_sample);
4275

    
4276
/**
4277
 * Log a generic warning message asking for a sample. This function is
4278
 * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.)
4279
 * only, and would normally not be used by applications.
4280
 * @param[in] avc a pointer to an arbitrary struct of which the first field is
4281
 * a pointer to an AVClass struct
4282
 * @param[in] msg string containing an optional message, or NULL if no message
4283
 */
4284
void av_log_ask_for_sample(void *avc, const char *msg);
4285

    
4286
/**
4287
 * Register the hardware accelerator hwaccel.
4288
 */
4289
void av_register_hwaccel(AVHWAccel *hwaccel);
4290

    
4291
/**
4292
 * If hwaccel is NULL, returns the first registered hardware accelerator,
4293
 * if hwaccel is non-NULL, returns the next registered hardware accelerator
4294
 * after hwaccel, or NULL if hwaccel is the last one.
4295
 */
4296
AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel);
4297

    
4298

    
4299
/**
4300
 * Lock operation used by lockmgr
4301
 */
4302
enum AVLockOp {
4303
  AV_LOCK_CREATE,  ///< Create a mutex
4304
  AV_LOCK_OBTAIN,  ///< Lock the mutex
4305
  AV_LOCK_RELEASE, ///< Unlock the mutex
4306
  AV_LOCK_DESTROY, ///< Free mutex resources
4307
};
4308

    
4309
/**
4310
 * Register a user provided lock manager supporting the operations
4311
 * specified by AVLockOp. mutex points to a (void *) where the
4312
 * lockmgr should store/get a pointer to a user allocated mutex. It's
4313
 * NULL upon AV_LOCK_CREATE and != NULL for all other ops.
4314
 *
4315
 * @param cb User defined callback. Note: FFmpeg may invoke calls to this
4316
 *           callback during the call to av_lockmgr_register().
4317
 *           Thus, the application must be prepared to handle that.
4318
 *           If cb is set to NULL the lockmgr will be unregistered.
4319
 *           Also note that during unregistration the previously registered
4320
 *           lockmgr callback may also be invoked.
4321
 */
4322
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op));
4323

    
4324
#endif /* AVCODEC_AVCODEC_H */