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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 "libavutil/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 114
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#define LIBAVCODEC_VERSION_MICRO  0
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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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    CODEC_ID_JV,
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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 "libavutil/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
467
    to be the native codec channel order. */
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#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 */
489
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
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491
/**
492
 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
493
 * This is mainly needed because some optimized bitstream readers read
494
 * 32 or 64 bit at once and could read over the end.<br>
495
 * Note: If the first 23 bits of the additional bytes are not 0, then damaged
496
 * MPEG bitstreams could cause overread and segfault.
497
 */
498
#define FF_INPUT_BUFFER_PADDING_SIZE 8
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500
/**
501
 * minimum encoding buffer size
502
 * Used to avoid some checks during header writing.
503
 */
504
#define FF_MIN_BUFFER_SIZE 16384
505

    
506

    
507
/**
508
 * motion estimation type.
509
 */
510
enum Motion_Est_ID {
511
    ME_ZERO = 1,    ///< no search, that is use 0,0 vector whenever one is needed
512
    ME_FULL,
513
    ME_LOG,
514
    ME_PHODS,
515
    ME_EPZS,        ///< enhanced predictive zonal search
516
    ME_X1,          ///< reserved for experiments
517
    ME_HEX,         ///< hexagon based search
518
    ME_UMH,         ///< uneven multi-hexagon search
519
    ME_ITER,        ///< iterative search
520
    ME_TESA,        ///< transformed exhaustive search algorithm
521
};
522

    
523
enum AVDiscard{
524
    /* We leave some space between them for extensions (drop some
525
     * keyframes for intra-only or drop just some bidir frames). */
526
    AVDISCARD_NONE   =-16, ///< discard nothing
527
    AVDISCARD_DEFAULT=  0, ///< discard useless packets like 0 size packets in avi
528
    AVDISCARD_NONREF =  8, ///< discard all non reference
529
    AVDISCARD_BIDIR  = 16, ///< discard all bidirectional frames
530
    AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
531
    AVDISCARD_ALL    = 48, ///< discard all
532
};
533

    
534
enum AVColorPrimaries{
535
    AVCOL_PRI_BT709      =1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
536
    AVCOL_PRI_UNSPECIFIED=2,
537
    AVCOL_PRI_BT470M     =4,
538
    AVCOL_PRI_BT470BG    =5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
539
    AVCOL_PRI_SMPTE170M  =6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
540
    AVCOL_PRI_SMPTE240M  =7, ///< functionally identical to above
541
    AVCOL_PRI_FILM       =8,
542
    AVCOL_PRI_NB           , ///< Not part of ABI
543
};
544

    
545
enum AVColorTransferCharacteristic{
546
    AVCOL_TRC_BT709      =1, ///< also ITU-R BT1361
547
    AVCOL_TRC_UNSPECIFIED=2,
548
    AVCOL_TRC_GAMMA22    =4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
549
    AVCOL_TRC_GAMMA28    =5, ///< also ITU-R BT470BG
550
    AVCOL_TRC_NB           , ///< Not part of ABI
551
};
552

    
553
enum AVColorSpace{
554
    AVCOL_SPC_RGB        =0,
555
    AVCOL_SPC_BT709      =1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
556
    AVCOL_SPC_UNSPECIFIED=2,
557
    AVCOL_SPC_FCC        =4,
558
    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
559
    AVCOL_SPC_SMPTE170M  =6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above
560
    AVCOL_SPC_SMPTE240M  =7,
561
    AVCOL_SPC_NB           , ///< Not part of ABI
562
};
563

    
564
enum AVColorRange{
565
    AVCOL_RANGE_UNSPECIFIED=0,
566
    AVCOL_RANGE_MPEG       =1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges
567
    AVCOL_RANGE_JPEG       =2, ///< the normal     2^n-1   "JPEG" YUV ranges
568
    AVCOL_RANGE_NB           , ///< Not part of ABI
569
};
570

    
571
/**
572
 *  X   X      3 4 X      X are luma samples,
573
 *             1 2        1-6 are possible chroma positions
574
 *  X   X      5 6 X      0 is undefined/unknown position
575
 */
576
enum AVChromaLocation{
577
    AVCHROMA_LOC_UNSPECIFIED=0,
578
    AVCHROMA_LOC_LEFT       =1, ///< mpeg2/4, h264 default
579
    AVCHROMA_LOC_CENTER     =2, ///< mpeg1, jpeg, h263
580
    AVCHROMA_LOC_TOPLEFT    =3, ///< DV
581
    AVCHROMA_LOC_TOP        =4,
582
    AVCHROMA_LOC_BOTTOMLEFT =5,
583
    AVCHROMA_LOC_BOTTOM     =6,
584
    AVCHROMA_LOC_NB           , ///< Not part of ABI
585
};
586

    
587
/**
588
 * LPC analysis type
589
 */
590
enum AVLPCType {
591
    AV_LPC_TYPE_DEFAULT     = -1, ///< use the codec default LPC type
592
    AV_LPC_TYPE_NONE        =  0, ///< do not use LPC prediction or use all zero coefficients
593
    AV_LPC_TYPE_FIXED       =  1, ///< fixed LPC coefficients
594
    AV_LPC_TYPE_LEVINSON    =  2, ///< Levinson-Durbin recursion
595
    AV_LPC_TYPE_CHOLESKY    =  3, ///< Cholesky factorization
596
    AV_LPC_TYPE_NB              , ///< Not part of ABI
597
};
598

    
599
typedef struct RcOverride{
600
    int start_frame;
601
    int end_frame;
602
    int qscale; // If this is 0 then quality_factor will be used instead.
603
    float quality_factor;
604
} RcOverride;
605

    
606
#define FF_MAX_B_FRAMES 16
607

    
608
/* encoding support
609
   These flags can be passed in AVCodecContext.flags before initialization.
610
   Note: Not everything is supported yet.
611
*/
612

    
613
#define CODEC_FLAG_QSCALE 0x0002  ///< Use fixed qscale.
614
#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / advanced prediction for H.263.
615
#define CODEC_FLAG_QPEL   0x0010  ///< Use qpel MC.
616
#define CODEC_FLAG_GMC    0x0020  ///< Use GMC.
617
#define CODEC_FLAG_MV0    0x0040  ///< Always try a MB with MV=<0,0>.
618
#define CODEC_FLAG_PART   0x0080  ///< Use data partitioning.
619
/**
620
 * The parent program guarantees that the input for B-frames containing
621
 * streams is not written to for at least s->max_b_frames+1 frames, if
622
 * this is not set the input will be copied.
623
 */
624
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
625
#define CODEC_FLAG_PASS1           0x0200   ///< Use internal 2pass ratecontrol in first pass mode.
626
#define CODEC_FLAG_PASS2           0x0400   ///< Use internal 2pass ratecontrol in second pass mode.
627
#define CODEC_FLAG_EXTERN_HUFF     0x1000   ///< Use external Huffman table (for MJPEG).
628
#define CODEC_FLAG_GRAY            0x2000   ///< Only decode/encode grayscale.
629
#define CODEC_FLAG_EMU_EDGE        0x4000   ///< Don't draw edges.
630
#define CODEC_FLAG_PSNR            0x8000   ///< error[?] variables will be set during encoding.
631
#define CODEC_FLAG_TRUNCATED       0x00010000 /** Input bitstream might be truncated at a random
632
                                                  location instead of only at frame boundaries. */
633
#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< Normalize adaptive quantization.
634
#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< Use interlaced DCT.
635
#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< Force low delay.
636
#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< Use alternate scan.
637
#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< Place global headers in extradata instead of every keyframe.
638
#define CODEC_FLAG_BITEXACT       0x00800000 ///< Use only bitexact stuff (except (I)DCT).
639
/* Fx : Flag for h263+ extra options */
640
#define CODEC_FLAG_AC_PRED        0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction
641
#define CODEC_FLAG_H263P_UMV      0x02000000 ///< unlimited motion vector
642
#define CODEC_FLAG_CBP_RD         0x04000000 ///< Use rate distortion optimization for cbp.
643
#define CODEC_FLAG_QP_RD          0x08000000 ///< Use rate distortion optimization for qp selectioon.
644
#define CODEC_FLAG_H263P_AIV      0x00000008 ///< H.263 alternative inter VLC
645
#define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
646
#define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
647
#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
648
#define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
649
#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< Will reserve space for SVCD scan offset user data.
650
#define CODEC_FLAG_CLOSED_GOP     0x80000000
651
#define CODEC_FLAG2_FAST          0x00000001 ///< Allow non spec compliant speedup tricks.
652
#define CODEC_FLAG2_STRICT_GOP    0x00000002 ///< Strictly enforce GOP size.
653
#define CODEC_FLAG2_NO_OUTPUT     0x00000004 ///< Skip bitstream encoding.
654
#define CODEC_FLAG2_LOCAL_HEADER  0x00000008 ///< Place global headers at every keyframe instead of in extradata.
655
#define CODEC_FLAG2_BPYRAMID      0x00000010 ///< H.264 allow B-frames to be used as references.
656
#define CODEC_FLAG2_WPRED         0x00000020 ///< H.264 weighted biprediction for B-frames
657
#define CODEC_FLAG2_MIXED_REFS    0x00000040 ///< H.264 one reference per partition, as opposed to one reference per macroblock
658
#define CODEC_FLAG2_8X8DCT        0x00000080 ///< H.264 high profile 8x8 transform
659
#define CODEC_FLAG2_FASTPSKIP     0x00000100 ///< H.264 fast pskip
660
#define CODEC_FLAG2_AUD           0x00000200 ///< H.264 access unit delimiters
661
#define CODEC_FLAG2_BRDO          0x00000400 ///< B-frame rate-distortion optimization
662
#define CODEC_FLAG2_INTRA_VLC     0x00000800 ///< Use MPEG-2 intra VLC table.
663
#define CODEC_FLAG2_MEMC_ONLY     0x00001000 ///< Only do ME/MC (I frames -> ref, P frame -> ME+MC).
664
#define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format.
665
#define CODEC_FLAG2_SKIP_RD       0x00004000 ///< RD optimal MB level residual skipping
666
#define CODEC_FLAG2_CHUNKS        0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
667
#define CODEC_FLAG2_NON_LINEAR_QUANT 0x00010000 ///< Use MPEG-2 nonlinear quantizer.
668
#define CODEC_FLAG2_BIT_RESERVOIR 0x00020000 ///< Use a bit reservoir when encoding if possible
669
#define CODEC_FLAG2_MBTREE        0x00040000 ///< Use macroblock tree ratecontrol (x264 only)
670
#define CODEC_FLAG2_PSY           0x00080000 ///< Use psycho visual optimizations.
671
#define CODEC_FLAG2_SSIM          0x00100000 ///< Compute SSIM during encoding, error[] values are undefined.
672
#define CODEC_FLAG2_INTRA_REFRESH 0x00200000 ///< Use periodic insertion of intra blocks instead of keyframes.
673

    
674
/* Unsupported options :
675
 *              Syntax Arithmetic coding (SAC)
676
 *              Reference Picture Selection
677
 *              Independent Segment Decoding */
678
/* /Fx */
679
/* codec capabilities */
680

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

    
729
/**
730
 * Codec is able to deal with negative linesizes
731
 */
732
#define CODEC_CAP_NEG_LINESIZES    0x0800
733

    
734
/**
735
 * Codec supports frame-level multithreading.
736
 */
737
#define CODEC_CAP_FRAME_THREADS    0x1000
738

    
739
//The following defines may change, don't expect compatibility if you use them.
740
#define MB_TYPE_INTRA4x4   0x0001
741
#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific
742
#define MB_TYPE_INTRA_PCM  0x0004 //FIXME H.264-specific
743
#define MB_TYPE_16x16      0x0008
744
#define MB_TYPE_16x8       0x0010
745
#define MB_TYPE_8x16       0x0020
746
#define MB_TYPE_8x8        0x0040
747
#define MB_TYPE_INTERLACED 0x0080
748
#define MB_TYPE_DIRECT2    0x0100 //FIXME
749
#define MB_TYPE_ACPRED     0x0200
750
#define MB_TYPE_GMC        0x0400
751
#define MB_TYPE_SKIP       0x0800
752
#define MB_TYPE_P0L0       0x1000
753
#define MB_TYPE_P1L0       0x2000
754
#define MB_TYPE_P0L1       0x4000
755
#define MB_TYPE_P1L1       0x8000
756
#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
757
#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
758
#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
759
#define MB_TYPE_QUANT      0x00010000
760
#define MB_TYPE_CBP        0x00020000
761
//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
762

    
763
/**
764
 * Pan Scan area.
765
 * This specifies the area which should be displayed.
766
 * Note there may be multiple such areas for one frame.
767
 */
768
typedef struct AVPanScan{
769
    /**
770
     * id
771
     * - encoding: Set by user.
772
     * - decoding: Set by libavcodec.
773
     */
774
    int id;
775

    
776
    /**
777
     * width and height in 1/16 pel
778
     * - encoding: Set by user.
779
     * - decoding: Set by libavcodec.
780
     */
781
    int width;
782
    int height;
783

    
784
    /**
785
     * position of the top left corner in 1/16 pel for up to 3 fields/frames
786
     * - encoding: Set by user.
787
     * - decoding: Set by libavcodec.
788
     */
789
    int16_t position[3][2];
790
}AVPanScan;
791

    
792
#define FF_COMMON_FRAME \
793
    /**\
794
     * pointer to the picture planes.\
795
     * This might be different from the first allocated byte\
796
     * - encoding: \
797
     * - decoding: \
798
     */\
799
    uint8_t *data[4];\
800
    int linesize[4];\
801
    /**\
802
     * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.\
803
     * This isn't used by libavcodec unless the default get/release_buffer() is used.\
804
     * - encoding: \
805
     * - decoding: \
806
     */\
807
    uint8_t *base[4];\
808
    /**\
809
     * 1 -> keyframe, 0-> not\
810
     * - encoding: Set by libavcodec.\
811
     * - decoding: Set by libavcodec.\
812
     */\
813
    int key_frame;\
814
\
815
    /**\
816
     * Picture type of the frame, see ?_TYPE below.\
817
     * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
818
     * - decoding: Set by libavcodec.\
819
     */\
820
    int pict_type;\
821
\
822
    /**\
823
     * presentation timestamp in time_base units (time when frame should be shown to user)\
824
     * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.\
825
     * - encoding: MUST be set by user.\
826
     * - decoding: Set by libavcodec.\
827
     */\
828
    int64_t pts;\
829
\
830
    /**\
831
     * picture number in bitstream order\
832
     * - encoding: set by\
833
     * - decoding: Set by libavcodec.\
834
     */\
835
    int coded_picture_number;\
836
    /**\
837
     * picture number in display order\
838
     * - encoding: set by\
839
     * - decoding: Set by libavcodec.\
840
     */\
841
    int display_picture_number;\
842
\
843
    /**\
844
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
845
     * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
846
     * - decoding: Set by libavcodec.\
847
     */\
848
    int quality; \
849
\
850
    /**\
851
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
852
     * Set to INT_MAX if the buffer has not been used yet.\
853
     * - encoding: unused\
854
     * - decoding: MUST be set by get_buffer().\
855
     */\
856
    int age;\
857
\
858
    /**\
859
     * is this picture used as reference\
860
     * The values for this are the same as the MpegEncContext.picture_structure\
861
     * variable, that is 1->top field, 2->bottom field, 3->frame/both fields.\
862
     * Set to 4 for delayed, non-reference frames.\
863
     * - encoding: unused\
864
     * - decoding: Set by libavcodec. (before get_buffer() call)).\
865
     */\
866
    int reference;\
867
\
868
    /**\
869
     * QP table\
870
     * - encoding: unused\
871
     * - decoding: Set by libavcodec.\
872
     */\
873
    int8_t *qscale_table;\
874
    /**\
875
     * QP store stride\
876
     * - encoding: unused\
877
     * - decoding: Set by libavcodec.\
878
     */\
879
    int qstride;\
880
\
881
    /**\
882
     * mbskip_table[mb]>=1 if MB didn't change\
883
     * stride= mb_width = (width+15)>>4\
884
     * - encoding: unused\
885
     * - decoding: Set by libavcodec.\
886
     */\
887
    uint8_t *mbskip_table;\
888
\
889
    /**\
890
     * motion vector table\
891
     * @code\
892
     * example:\
893
     * int mv_sample_log2= 4 - motion_subsample_log2;\
894
     * int mb_width= (width+15)>>4;\
895
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
896
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
897
     * @endcode\
898
     * - encoding: Set by user.\
899
     * - decoding: Set by libavcodec.\
900
     */\
901
    int16_t (*motion_val[2])[2];\
902
\
903
    /**\
904
     * macroblock type table\
905
     * mb_type_base + mb_width + 2\
906
     * - encoding: Set by user.\
907
     * - decoding: Set by libavcodec.\
908
     */\
909
    uint32_t *mb_type;\
910
\
911
    /**\
912
     * log2 of the size of the block which a single vector in motion_val represents: \
913
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
914
     * - encoding: unused\
915
     * - decoding: Set by libavcodec.\
916
     */\
917
    uint8_t motion_subsample_log2;\
918
\
919
    /**\
920
     * for some private data of the user\
921
     * - encoding: unused\
922
     * - decoding: Set by user.\
923
     */\
924
    void *opaque;\
925
\
926
    /**\
927
     * error\
928
     * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.\
929
     * - decoding: unused\
930
     */\
931
    uint64_t error[4];\
932
\
933
    /**\
934
     * type of the buffer (to keep track of who has to deallocate data[*])\
935
     * - encoding: Set by the one who allocates it.\
936
     * - decoding: Set by the one who allocates it.\
937
     * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.\
938
     */\
939
    int type;\
940
    \
941
    /**\
942
     * When decoding, this signals how much the picture must be delayed.\
943
     * extra_delay = repeat_pict / (2*fps)\
944
     * - encoding: unused\
945
     * - decoding: Set by libavcodec.\
946
     */\
947
    int repeat_pict;\
948
    \
949
    /**\
950
     * \
951
     */\
952
    int qscale_type;\
953
    \
954
    /**\
955
     * The content of the picture is interlaced.\
956
     * - encoding: Set by user.\
957
     * - decoding: Set by libavcodec. (default 0)\
958
     */\
959
    int interlaced_frame;\
960
    \
961
    /**\
962
     * If the content is interlaced, is top field displayed first.\
963
     * - encoding: Set by user.\
964
     * - decoding: Set by libavcodec.\
965
     */\
966
    int top_field_first;\
967
    \
968
    /**\
969
     * Pan scan.\
970
     * - encoding: Set by user.\
971
     * - decoding: Set by libavcodec.\
972
     */\
973
    AVPanScan *pan_scan;\
974
    \
975
    /**\
976
     * Tell user application that palette has changed from previous frame.\
977
     * - encoding: ??? (no palette-enabled encoder yet)\
978
     * - decoding: Set by libavcodec. (default 0).\
979
     */\
980
    int palette_has_changed;\
981
    \
982
    /**\
983
     * codec suggestion on buffer type if != 0\
984
     * - encoding: unused\
985
     * - decoding: Set by libavcodec. (before get_buffer() call)).\
986
     */\
987
    int buffer_hints;\
988
\
989
    /**\
990
     * DCT coefficients\
991
     * - encoding: unused\
992
     * - decoding: Set by libavcodec.\
993
     */\
994
    short *dct_coeff;\
995
\
996
    /**\
997
     * motion reference frame index\
998
     * the order in which these are stored can depend on the codec.\
999
     * - encoding: Set by user.\
1000
     * - decoding: Set by libavcodec.\
1001
     */\
1002
    int8_t *ref_index[2];\
1003
\
1004
    /**\
1005
     * reordered opaque 64bit (generally an integer or a double precision float\
1006
     * PTS but can be anything). \
1007
     * The user sets AVCodecContext.reordered_opaque to represent the input at\
1008
     * that time,\
1009
     * the decoder reorders values as needed and sets AVFrame.reordered_opaque\
1010
     * to exactly one of the values provided by the user through AVCodecContext.reordered_opaque \
1011
     * @deprecated in favor of pkt_pts\
1012
     * - encoding: unused\
1013
     * - decoding: Read by user.\
1014
     */\
1015
    int64_t reordered_opaque;\
1016
\
1017
    /**\
1018
     * hardware accelerator private data (FFmpeg allocated)\
1019
     * - encoding: unused\
1020
     * - decoding: Set by libavcodec\
1021
     */\
1022
    void *hwaccel_picture_private;\
1023
\
1024
    /**\
1025
     * reordered pts from the last AVPacket that has been input into the decoder\
1026
     * - encoding: unused\
1027
     * - decoding: Read by user.\
1028
     */\
1029
    int64_t pkt_pts;\
1030
\
1031
    /**\
1032
     * dts from the last AVPacket that has been input into the decoder\
1033
     * - encoding: unused\
1034
     * - decoding: Read by user.\
1035
     */\
1036
    int64_t pkt_dts;\
1037
\
1038
    /**\
1039
     * the AVCodecContext which ff_thread_get_buffer() was last called on\
1040
     * - encoding: Set by libavcodec.\
1041
     * - decoding: Set by libavcodec.\
1042
     */\
1043
    struct AVCodecContext *owner;\
1044
\
1045
    /**\
1046
     * used by multithreading to store frame-specific info\
1047
     * - encoding: Set by libavcodec.\
1048
     * - decoding: Set by libavcodec.\
1049
     */\
1050
    void *thread_opaque;\
1051
\
1052
    /**\
1053
     * frame timestamp estimated using various heuristics, in stream time base\
1054
     * - encoding: unused\
1055
     * - decoding: set by libavcodec, read by user.\
1056
     */\
1057
    int64_t best_effort_timestamp;\
1058

    
1059

    
1060
#define FF_QSCALE_TYPE_MPEG1 0
1061
#define FF_QSCALE_TYPE_MPEG2 1
1062
#define FF_QSCALE_TYPE_H264  2
1063
#define FF_QSCALE_TYPE_VP56  3
1064

    
1065
#define FF_BUFFER_TYPE_INTERNAL 1
1066
#define FF_BUFFER_TYPE_USER     2 ///< direct rendering buffers (image is (de)allocated by user)
1067
#define FF_BUFFER_TYPE_SHARED   4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared.
1068
#define FF_BUFFER_TYPE_COPY     8 ///< Just a (modified) copy of some other buffer, don't deallocate anything.
1069

    
1070

    
1071
#define FF_I_TYPE  1 ///< Intra
1072
#define FF_P_TYPE  2 ///< Predicted
1073
#define FF_B_TYPE  3 ///< Bi-dir predicted
1074
#define FF_S_TYPE  4 ///< S(GMC)-VOP MPEG4
1075
#define FF_SI_TYPE 5 ///< Switching Intra
1076
#define FF_SP_TYPE 6 ///< Switching Predicted
1077
#define FF_BI_TYPE 7
1078

    
1079
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore).
1080
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer.
1081
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content.
1082
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update).
1083

    
1084
typedef struct AVPacket {
1085
    /**
1086
     * Presentation timestamp in AVStream->time_base units; the time at which
1087
     * the decompressed packet will be presented to the user.
1088
     * Can be AV_NOPTS_VALUE if it is not stored in the file.
1089
     * pts MUST be larger or equal to dts as presentation cannot happen before
1090
     * decompression, unless one wants to view hex dumps. Some formats misuse
1091
     * the terms dts and pts/cts to mean something different. Such timestamps
1092
     * must be converted to true pts/dts before they are stored in AVPacket.
1093
     */
1094
    int64_t pts;
1095
    /**
1096
     * Decompression timestamp in AVStream->time_base units; the time at which
1097
     * the packet is decompressed.
1098
     * Can be AV_NOPTS_VALUE if it is not stored in the file.
1099
     */
1100
    int64_t dts;
1101
    uint8_t *data;
1102
    int   size;
1103
    int   stream_index;
1104
    int   flags;
1105
    /**
1106
     * Duration of this packet in AVStream->time_base units, 0 if unknown.
1107
     * Equals next_pts - this_pts in presentation order.
1108
     */
1109
    int   duration;
1110
    void  (*destruct)(struct AVPacket *);
1111
    void  *priv;
1112
    int64_t pos;                            ///< byte position in stream, -1 if unknown
1113

    
1114
    /**
1115
     * Time difference in AVStream->time_base units from the pts of this
1116
     * packet to the point at which the output from the decoder has converged
1117
     * independent from the availability of previous frames. That is, the
1118
     * frames are virtually identical no matter if decoding started from
1119
     * the very first frame or from this keyframe.
1120
     * Is AV_NOPTS_VALUE if unknown.
1121
     * This field is not the display duration of the current packet.
1122
     * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY
1123
     * set.
1124
     *
1125
     * The purpose of this field is to allow seeking in streams that have no
1126
     * keyframes in the conventional sense. It corresponds to the
1127
     * recovery point SEI in H.264 and match_time_delta in NUT. It is also
1128
     * essential for some types of subtitle streams to ensure that all
1129
     * subtitles are correctly displayed after seeking.
1130
     */
1131
    int64_t convergence_duration;
1132
} AVPacket;
1133
#define AV_PKT_FLAG_KEY   0x0001
1134
#if LIBAVCODEC_VERSION_MAJOR < 53
1135
#define PKT_FLAG_KEY AV_PKT_FLAG_KEY
1136
#endif
1137

    
1138
/**
1139
 * Audio Video Frame.
1140
 * New fields can be added to the end of FF_COMMON_FRAME with minor version
1141
 * bumps.
1142
 * Removal, reordering and changes to existing fields require a major
1143
 * version bump. No fields should be added into AVFrame before or after
1144
 * FF_COMMON_FRAME!
1145
 * sizeof(AVFrame) must not be used outside libav*.
1146
 */
1147
typedef struct AVFrame {
1148
    FF_COMMON_FRAME
1149
} AVFrame;
1150

    
1151
/**
1152
 * main external API structure.
1153
 * New fields can be added to the end with minor version bumps.
1154
 * Removal, reordering and changes to existing fields require a major
1155
 * version bump.
1156
 * sizeof(AVCodecContext) must not be used outside libav*.
1157
 */
1158
typedef struct AVCodecContext {
1159
    /**
1160
     * information on struct for av_log
1161
     * - set by avcodec_alloc_context
1162
     */
1163
    const AVClass *av_class;
1164
    /**
1165
     * the average bitrate
1166
     * - encoding: Set by user; unused for constant quantizer encoding.
1167
     * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
1168
     */
1169
    int bit_rate;
1170

    
1171
    /**
1172
     * number of bits the bitstream is allowed to diverge from the reference.
1173
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
1174
     * - encoding: Set by user; unused for constant quantizer encoding.
1175
     * - decoding: unused
1176
     */
1177
    int bit_rate_tolerance;
1178

    
1179
    /**
1180
     * CODEC_FLAG_*.
1181
     * - encoding: Set by user.
1182
     * - decoding: Set by user.
1183
     */
1184
    int flags;
1185

    
1186
    /**
1187
     * Some codecs need additional format info. It is stored here.
1188
     * If any muxer uses this then ALL demuxers/parsers AND encoders for the
1189
     * specific codec MUST set it correctly otherwise stream copy breaks.
1190
     * In general use of this field by muxers is not recommanded.
1191
     * - encoding: Set by libavcodec.
1192
     * - decoding: Set by libavcodec. (FIXME: Is this OK?)
1193
     */
1194
    int sub_id;
1195

    
1196
    /**
1197
     * Motion estimation algorithm used for video coding.
1198
     * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
1199
     * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific]
1200
     * - encoding: MUST be set by user.
1201
     * - decoding: unused
1202
     */
1203
    int me_method;
1204

    
1205
    /**
1206
     * some codecs need / can use extradata like Huffman tables.
1207
     * mjpeg: Huffman tables
1208
     * rv10: additional flags
1209
     * mpeg4: global headers (they can be in the bitstream or here)
1210
     * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
1211
     * than extradata_size to avoid prolems if it is read with the bitstream reader.
1212
     * The bytewise contents of extradata must not depend on the architecture or CPU endianness.
1213
     * - encoding: Set/allocated/freed by libavcodec.
1214
     * - decoding: Set/allocated/freed by user.
1215
     */
1216
    uint8_t *extradata;
1217
    int extradata_size;
1218

    
1219
    /**
1220
     * This is the fundamental unit of time (in seconds) in terms
1221
     * of which frame timestamps are represented. For fixed-fps content,
1222
     * timebase should be 1/framerate and timestamp increments should be
1223
     * identically 1.
1224
     * - encoding: MUST be set by user.
1225
     * - decoding: Set by libavcodec.
1226
     */
1227
    AVRational time_base;
1228

    
1229
    /* video only */
1230
    /**
1231
     * picture width / height.
1232
     * - encoding: MUST be set by user.
1233
     * - decoding: Set by libavcodec.
1234
     * Note: For compatibility it is possible to set this instead of
1235
     * coded_width/height before decoding.
1236
     */
1237
    int width, height;
1238

    
1239
#define FF_ASPECT_EXTENDED 15
1240

    
1241
    /**
1242
     * the number of pictures in a group of pictures, or 0 for intra_only
1243
     * - encoding: Set by user.
1244
     * - decoding: unused
1245
     */
1246
    int gop_size;
1247

    
1248
    /**
1249
     * Pixel format, see PIX_FMT_xxx.
1250
     * May be set by the demuxer if known from headers.
1251
     * May be overriden by the decoder if it knows better.
1252
     * - encoding: Set by user.
1253
     * - decoding: Set by user if known, overridden by libavcodec if known
1254
     */
1255
    enum PixelFormat pix_fmt;
1256

    
1257
    /**
1258
     * Frame rate emulation. If not zero, the lower layer (i.e. format handler)
1259
     * has to read frames at native frame rate.
1260
     * - encoding: Set by user.
1261
     * - decoding: unused
1262
     */
1263
    int rate_emu;
1264

    
1265
    /**
1266
     * If non NULL, 'draw_horiz_band' is called by the libavcodec
1267
     * decoder to draw a horizontal band. It improves cache usage. Not
1268
     * all codecs can do that. You must check the codec capabilities
1269
     * beforehand.
1270
     * When multithreading is used, it may be called from multiple threads
1271
     * at the same time; threads might draw different parts of the same AVFrame,
1272
     * or multiple AVFrames, and there is no guarantee that slices will be drawn
1273
     * in order.
1274
     * The function is also used by hardware acceleration APIs.
1275
     * It is called at least once during frame decoding to pass
1276
     * the data needed for hardware render.
1277
     * In that mode instead of pixel data, AVFrame points to
1278
     * a structure specific to the acceleration API. The application
1279
     * reads the structure and can change some fields to indicate progress
1280
     * or mark state.
1281
     * - encoding: unused
1282
     * - decoding: Set by user.
1283
     * @param height the height of the slice
1284
     * @param y the y position of the slice
1285
     * @param type 1->top field, 2->bottom field, 3->frame
1286
     * @param offset offset into the AVFrame.data from which the slice should be read
1287
     */
1288
    void (*draw_horiz_band)(struct AVCodecContext *s,
1289
                            const AVFrame *src, int offset[4],
1290
                            int y, int type, int height);
1291

    
1292
    /* audio only */
1293
    int sample_rate; ///< samples per second
1294
    int channels;    ///< number of audio channels
1295

    
1296
    /**
1297
     * audio sample format
1298
     * - encoding: Set by user.
1299
     * - decoding: Set by libavcodec.
1300
     */
1301
    enum AVSampleFormat sample_fmt;  ///< sample format
1302

    
1303
    /* The following data should not be initialized. */
1304
    /**
1305
     * Samples per packet, initialized when calling 'init'.
1306
     */
1307
    int frame_size;
1308
    int frame_number;   ///< audio or video frame number
1309
#if LIBAVCODEC_VERSION_MAJOR < 53
1310
    int real_pict_num;  ///< Returns the real picture number of previous encoded frame.
1311
#endif
1312

    
1313
    /**
1314
     * Number of frames the decoded output will be delayed relative to
1315
     * the encoded input.
1316
     * - encoding: Set by libavcodec.
1317
     * - decoding: unused
1318
     */
1319
    int delay;
1320

    
1321
    /* - encoding parameters */
1322
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
1323
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
1324

    
1325
    /**
1326
     * minimum quantizer
1327
     * - encoding: Set by user.
1328
     * - decoding: unused
1329
     */
1330
    int qmin;
1331

    
1332
    /**
1333
     * maximum quantizer
1334
     * - encoding: Set by user.
1335
     * - decoding: unused
1336
     */
1337
    int qmax;
1338

    
1339
    /**
1340
     * maximum quantizer difference between frames
1341
     * - encoding: Set by user.
1342
     * - decoding: unused
1343
     */
1344
    int max_qdiff;
1345

    
1346
    /**
1347
     * maximum number of B-frames between non-B-frames
1348
     * Note: The output will be delayed by max_b_frames+1 relative to the input.
1349
     * - encoding: Set by user.
1350
     * - decoding: unused
1351
     */
1352
    int max_b_frames;
1353

    
1354
    /**
1355
     * qscale factor between IP and B-frames
1356
     * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
1357
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1358
     * - encoding: Set by user.
1359
     * - decoding: unused
1360
     */
1361
    float b_quant_factor;
1362

    
1363
    /** obsolete FIXME remove */
1364
    int rc_strategy;
1365
#define FF_RC_STRATEGY_XVID 1
1366

    
1367
    int b_frame_strategy;
1368

    
1369
    /**
1370
     * hurry up amount
1371
     * - encoding: unused
1372
     * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header
1373
     * @deprecated Deprecated in favor of skip_idct and skip_frame.
1374
     */
1375
    int hurry_up;
1376

    
1377
    struct AVCodec *codec;
1378

    
1379
    void *priv_data;
1380

    
1381
    int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
1382
                            /* do its best to deliver a chunk with size     */
1383
                            /* below rtp_payload_size, the chunk will start */
1384
                            /* with a start code on some codecs like H.263. */
1385
                            /* This doesn't take account of any particular  */
1386
                            /* headers inside the transmitted RTP payload.  */
1387

    
1388

    
1389
    /* The RTP callback: This function is called    */
1390
    /* every time the encoder has a packet to send. */
1391
    /* It depends on the encoder if the data starts */
1392
    /* with a Start Code (it should). H.263 does.   */
1393
    /* mb_nb contains the number of macroblocks     */
1394
    /* encoded in the RTP payload.                  */
1395
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
1396

    
1397
    /* statistics, used for 2-pass encoding */
1398
    int mv_bits;
1399
    int header_bits;
1400
    int i_tex_bits;
1401
    int p_tex_bits;
1402
    int i_count;
1403
    int p_count;
1404
    int skip_count;
1405
    int misc_bits;
1406

    
1407
    /**
1408
     * number of bits used for the previously encoded frame
1409
     * - encoding: Set by libavcodec.
1410
     * - decoding: unused
1411
     */
1412
    int frame_bits;
1413

    
1414
    /**
1415
     * Private data of the user, can be used to carry app specific stuff.
1416
     * - encoding: Set by user.
1417
     * - decoding: Set by user.
1418
     */
1419
    void *opaque;
1420

    
1421
    char codec_name[32];
1422
    enum AVMediaType codec_type; /* see AVMEDIA_TYPE_xxx */
1423
    enum CodecID codec_id; /* see CODEC_ID_xxx */
1424

    
1425
    /**
1426
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1427
     * This is used to work around some encoder bugs.
1428
     * A demuxer should set this to what is stored in the field used to identify the codec.
1429
     * If there are multiple such fields in a container then the demuxer should choose the one
1430
     * which maximizes the information about the used codec.
1431
     * If the codec tag field in a container is larger then 32 bits then the demuxer should
1432
     * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
1433
     * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
1434
     * first.
1435
     * - encoding: Set by user, if not then the default based on codec_id will be used.
1436
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
1437
     */
1438
    unsigned int codec_tag;
1439

    
1440
    /**
1441
     * Work around bugs in encoders which sometimes cannot be detected automatically.
1442
     * - encoding: Set by user
1443
     * - decoding: Set by user
1444
     */
1445
    int workaround_bugs;
1446
#define FF_BUG_AUTODETECT       1  ///< autodetection
1447
#define FF_BUG_OLD_MSMPEG4      2
1448
#define FF_BUG_XVID_ILACE       4
1449
#define FF_BUG_UMP4             8
1450
#define FF_BUG_NO_PADDING       16
1451
#define FF_BUG_AMV              32
1452
#define FF_BUG_AC_VLC           0  ///< Will be removed, libavcodec can now handle these non-compliant files by default.
1453
#define FF_BUG_QPEL_CHROMA      64
1454
#define FF_BUG_STD_QPEL         128
1455
#define FF_BUG_QPEL_CHROMA2     256
1456
#define FF_BUG_DIRECT_BLOCKSIZE 512
1457
#define FF_BUG_EDGE             1024
1458
#define FF_BUG_HPEL_CHROMA      2048
1459
#define FF_BUG_DC_CLIP          4096
1460
#define FF_BUG_MS               8192 ///< Work around various bugs in Microsoft's broken decoders.
1461
#define FF_BUG_TRUNCATED       16384
1462
//#define FF_BUG_FAKE_SCALABILITY 16 //Autodetection should work 100%.
1463

    
1464
    /**
1465
     * luma single coefficient elimination threshold
1466
     * - encoding: Set by user.
1467
     * - decoding: unused
1468
     */
1469
    int luma_elim_threshold;
1470

    
1471
    /**
1472
     * chroma single coeff elimination threshold
1473
     * - encoding: Set by user.
1474
     * - decoding: unused
1475
     */
1476
    int chroma_elim_threshold;
1477

    
1478
    /**
1479
     * strictly follow the standard (MPEG4, ...).
1480
     * - encoding: Set by user.
1481
     * - decoding: Set by user.
1482
     * Setting this to STRICT or higher means the encoder and decoder will
1483
     * generally do stupid things, whereas setting it to unofficial or lower
1484
     * will mean the encoder might produce output that is not supported by all
1485
     * spec-compliant decoders. Decoders don't differentiate between normal,
1486
     * unofficial and experimental (that is, they always try to decode things
1487
     * when they can) unless they are explicitly asked to behave stupidly
1488
     * (=strictly conform to the specs)
1489
     */
1490
    int strict_std_compliance;
1491
#define FF_COMPLIANCE_VERY_STRICT   2 ///< Strictly conform to an older more strict version of the spec or reference software.
1492
#define FF_COMPLIANCE_STRICT        1 ///< Strictly conform to all the things in the spec no matter what consequences.
1493
#define FF_COMPLIANCE_NORMAL        0
1494
#if FF_API_INOFFICIAL
1495
#define FF_COMPLIANCE_INOFFICIAL   -1 ///< Allow inofficial extensions (deprecated - use FF_COMPLIANCE_UNOFFICIAL instead).
1496
#endif
1497
#define FF_COMPLIANCE_UNOFFICIAL   -1 ///< Allow unofficial extensions
1498
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things.
1499

    
1500
    /**
1501
     * qscale offset between IP and B-frames
1502
     * - encoding: Set by user.
1503
     * - decoding: unused
1504
     */
1505
    float b_quant_offset;
1506

    
1507
    /**
1508
     * Error recognization; higher values will detect more errors but may
1509
     * misdetect some more or less valid parts as errors.
1510
     * - encoding: unused
1511
     * - decoding: Set by user.
1512
     */
1513
    int error_recognition;
1514
#define FF_ER_CAREFUL         1
1515
#define FF_ER_COMPLIANT       2
1516
#define FF_ER_AGGRESSIVE      3
1517
#define FF_ER_VERY_AGGRESSIVE 4
1518

    
1519
    /**
1520
     * Called at the beginning of each frame to get a buffer for it.
1521
     * If pic.reference is set then the frame will be read later by libavcodec.
1522
     * avcodec_align_dimensions2() should be used to find the required width and
1523
     * height, as they normally need to be rounded up to the next multiple of 16.
1524
     * if CODEC_CAP_DR1 is not set then get_buffer() must call
1525
     * avcodec_default_get_buffer() instead of providing buffers allocated by
1526
     * some other means.
1527
     * If frame multithreading is used and thread_safe_callbacks is set,
1528
     * it may be called from a different thread, but not from more than one at once.
1529
     * Does not need to be reentrant.
1530
     * - encoding: unused
1531
     * - decoding: Set by libavcodec, user can override.
1532
     */
1533
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1534

    
1535
    /**
1536
     * Called to release buffers which were allocated with get_buffer.
1537
     * A released buffer can be reused in get_buffer().
1538
     * pic.data[*] must be set to NULL.
1539
     * May be called from a different thread if frame multithreading is used,
1540
     * but not by more than one thread at once, so does not need to be reentrant.
1541
     * - encoding: unused
1542
     * - decoding: Set by libavcodec, user can override.
1543
     */
1544
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1545

    
1546
    /**
1547
     * Size of the frame reordering buffer in the decoder.
1548
     * For MPEG-2 it is 1 IPB or 0 low delay IP.
1549
     * - encoding: Set by libavcodec.
1550
     * - decoding: Set by libavcodec.
1551
     */
1552
    int has_b_frames;
1553

    
1554
    /**
1555
     * number of bytes per packet if constant and known or 0
1556
     * Used by some WAV based audio codecs.
1557
     */
1558
    int block_align;
1559

    
1560
    int parse_only; /* - decoding only: If true, only parsing is done
1561
                       (function avcodec_parse_frame()). The frame
1562
                       data is returned. Only MPEG codecs support this now. */
1563

    
1564
    /**
1565
     * 0-> h263 quant 1-> mpeg quant
1566
     * - encoding: Set by user.
1567
     * - decoding: unused
1568
     */
1569
    int mpeg_quant;
1570

    
1571
    /**
1572
     * pass1 encoding statistics output buffer
1573
     * - encoding: Set by libavcodec.
1574
     * - decoding: unused
1575
     */
1576
    char *stats_out;
1577

    
1578
    /**
1579
     * pass2 encoding statistics input buffer
1580
     * Concatenated stuff from stats_out of pass1 should be placed here.
1581
     * - encoding: Allocated/set/freed by user.
1582
     * - decoding: unused
1583
     */
1584
    char *stats_in;
1585

    
1586
    /**
1587
     * ratecontrol qmin qmax limiting method
1588
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
1589
     * - encoding: Set by user.
1590
     * - decoding: unused
1591
     */
1592
    float rc_qsquish;
1593

    
1594
    float rc_qmod_amp;
1595
    int rc_qmod_freq;
1596

    
1597
    /**
1598
     * ratecontrol override, see RcOverride
1599
     * - encoding: Allocated/set/freed by user.
1600
     * - decoding: unused
1601
     */
1602
    RcOverride *rc_override;
1603
    int rc_override_count;
1604

    
1605
    /**
1606
     * rate control equation
1607
     * - encoding: Set by user
1608
     * - decoding: unused
1609
     */
1610
    const char *rc_eq;
1611

    
1612
    /**
1613
     * maximum bitrate
1614
     * - encoding: Set by user.
1615
     * - decoding: unused
1616
     */
1617
    int rc_max_rate;
1618

    
1619
    /**
1620
     * minimum bitrate
1621
     * - encoding: Set by user.
1622
     * - decoding: unused
1623
     */
1624
    int rc_min_rate;
1625

    
1626
    /**
1627
     * decoder bitstream buffer size
1628
     * - encoding: Set by user.
1629
     * - decoding: unused
1630
     */
1631
    int rc_buffer_size;
1632
    float rc_buffer_aggressivity;
1633

    
1634
    /**
1635
     * qscale factor between P and I-frames
1636
     * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
1637
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1638
     * - encoding: Set by user.
1639
     * - decoding: unused
1640
     */
1641
    float i_quant_factor;
1642

    
1643
    /**
1644
     * qscale offset between P and I-frames
1645
     * - encoding: Set by user.
1646
     * - decoding: unused
1647
     */
1648
    float i_quant_offset;
1649

    
1650
    /**
1651
     * initial complexity for pass1 ratecontrol
1652
     * - encoding: Set by user.
1653
     * - decoding: unused
1654
     */
1655
    float rc_initial_cplx;
1656

    
1657
    /**
1658
     * DCT algorithm, see FF_DCT_* below
1659
     * - encoding: Set by user.
1660
     * - decoding: unused
1661
     */
1662
    int dct_algo;
1663
#define FF_DCT_AUTO    0
1664
#define FF_DCT_FASTINT 1
1665
#define FF_DCT_INT     2
1666
#define FF_DCT_MMX     3
1667
#define FF_DCT_MLIB    4
1668
#define FF_DCT_ALTIVEC 5
1669
#define FF_DCT_FAAN    6
1670

    
1671
    /**
1672
     * luminance masking (0-> disabled)
1673
     * - encoding: Set by user.
1674
     * - decoding: unused
1675
     */
1676
    float lumi_masking;
1677

    
1678
    /**
1679
     * temporary complexity masking (0-> disabled)
1680
     * - encoding: Set by user.
1681
     * - decoding: unused
1682
     */
1683
    float temporal_cplx_masking;
1684

    
1685
    /**
1686
     * spatial complexity masking (0-> disabled)
1687
     * - encoding: Set by user.
1688
     * - decoding: unused
1689
     */
1690
    float spatial_cplx_masking;
1691

    
1692
    /**
1693
     * p block masking (0-> disabled)
1694
     * - encoding: Set by user.
1695
     * - decoding: unused
1696
     */
1697
    float p_masking;
1698

    
1699
    /**
1700
     * darkness masking (0-> disabled)
1701
     * - encoding: Set by user.
1702
     * - decoding: unused
1703
     */
1704
    float dark_masking;
1705

    
1706
    /**
1707
     * IDCT algorithm, see FF_IDCT_* below.
1708
     * - encoding: Set by user.
1709
     * - decoding: Set by user.
1710
     */
1711
    int idct_algo;
1712
#define FF_IDCT_AUTO          0
1713
#define FF_IDCT_INT           1
1714
#define FF_IDCT_SIMPLE        2
1715
#define FF_IDCT_SIMPLEMMX     3
1716
#define FF_IDCT_LIBMPEG2MMX   4
1717
#define FF_IDCT_PS2           5
1718
#define FF_IDCT_MLIB          6
1719
#define FF_IDCT_ARM           7
1720
#define FF_IDCT_ALTIVEC       8
1721
#define FF_IDCT_SH4           9
1722
#define FF_IDCT_SIMPLEARM     10
1723
#define FF_IDCT_H264          11
1724
#define FF_IDCT_VP3           12
1725
#define FF_IDCT_IPP           13
1726
#define FF_IDCT_XVIDMMX       14
1727
#define FF_IDCT_CAVS          15
1728
#define FF_IDCT_SIMPLEARMV5TE 16
1729
#define FF_IDCT_SIMPLEARMV6   17
1730
#define FF_IDCT_SIMPLEVIS     18
1731
#define FF_IDCT_WMV2          19
1732
#define FF_IDCT_FAAN          20
1733
#define FF_IDCT_EA            21
1734
#define FF_IDCT_SIMPLENEON    22
1735
#define FF_IDCT_SIMPLEALPHA   23
1736
#define FF_IDCT_BINK          24
1737

    
1738
    /**
1739
     * slice count
1740
     * - encoding: Set by libavcodec.
1741
     * - decoding: Set by user (or 0).
1742
     */
1743
    int slice_count;
1744
    /**
1745
     * slice offsets in the frame in bytes
1746
     * - encoding: Set/allocated by libavcodec.
1747
     * - decoding: Set/allocated by user (or NULL).
1748
     */
1749
    int *slice_offset;
1750

    
1751
    /**
1752
     * error concealment flags
1753
     * - encoding: unused
1754
     * - decoding: Set by user.
1755
     */
1756
    int error_concealment;
1757
#define FF_EC_GUESS_MVS   1
1758
#define FF_EC_DEBLOCK     2
1759

    
1760
    /**
1761
     * dsp_mask could be add used to disable unwanted CPU features
1762
     * CPU features (i.e. MMX, SSE. ...)
1763
     *
1764
     * With the FORCE flag you may instead enable given CPU features.
1765
     * (Dangerous: Usable in case of misdetection, improper usage however will
1766
     * result into program crash.)
1767
     */
1768
    unsigned dsp_mask;
1769

    
1770
#if FF_API_MM_FLAGS
1771
#define FF_MM_FORCE      AV_CPU_FLAG_FORCE
1772
#define FF_MM_MMX        AV_CPU_FLAG_MMX
1773
#define FF_MM_3DNOW      AV_CPU_FLAG_3DNOW
1774
#define FF_MM_MMXEXT     AV_CPU_FLAG_MMX2
1775
#define FF_MM_MMX2       AV_CPU_FLAG_MMX2
1776
#define FF_MM_SSE        AV_CPU_FLAG_SSE
1777
#define FF_MM_SSE2       AV_CPU_FLAG_SSE2
1778
#define FF_MM_SSE2SLOW   AV_CPU_FLAG_SSE2SLOW
1779
#define FF_MM_3DNOWEXT   AV_CPU_FLAG_3DNOWEXT
1780
#define FF_MM_SSE3       AV_CPU_FLAG_SSE3
1781
#define FF_MM_SSE3SLOW   AV_CPU_FLAG_SSE3SLOW
1782
#define FF_MM_SSSE3      AV_CPU_FLAG_SSSE3
1783
#define FF_MM_SSE4       AV_CPU_FLAG_SSE4
1784
#define FF_MM_SSE42      AV_CPU_FLAG_SSE42
1785
#define FF_MM_IWMMXT     AV_CPU_FLAG_IWMMXT
1786
#define FF_MM_ALTIVEC    AV_CPU_FLAG_ALTIVEC
1787
#endif
1788

    
1789
    /**
1790
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1791
     * - encoding: Set by libavcodec.
1792
     * - decoding: Set by user.
1793
     */
1794
     int bits_per_coded_sample;
1795

    
1796
    /**
1797
     * prediction method (needed for huffyuv)
1798
     * - encoding: Set by user.
1799
     * - decoding: unused
1800
     */
1801
     int prediction_method;
1802
#define FF_PRED_LEFT   0
1803
#define FF_PRED_PLANE  1
1804
#define FF_PRED_MEDIAN 2
1805

    
1806
    /**
1807
     * sample aspect ratio (0 if unknown)
1808
     * That is the width of a pixel divided by the height of the pixel.
1809
     * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
1810
     * - encoding: Set by user.
1811
     * - decoding: Set by libavcodec.
1812
     */
1813
    AVRational sample_aspect_ratio;
1814

    
1815
    /**
1816
     * the picture in the bitstream
1817
     * - encoding: Set by libavcodec.
1818
     * - decoding: Set by libavcodec.
1819
     */
1820
    AVFrame *coded_frame;
1821

    
1822
    /**
1823
     * debug
1824
     * - encoding: Set by user.
1825
     * - decoding: Set by user.
1826
     */
1827
    int debug;
1828
#define FF_DEBUG_PICT_INFO   1
1829
#define FF_DEBUG_RC          2
1830
#define FF_DEBUG_BITSTREAM   4
1831
#define FF_DEBUG_MB_TYPE     8
1832
#define FF_DEBUG_QP          16
1833
#define FF_DEBUG_MV          32
1834
#define FF_DEBUG_DCT_COEFF   0x00000040
1835
#define FF_DEBUG_SKIP        0x00000080
1836
#define FF_DEBUG_STARTCODE   0x00000100
1837
#define FF_DEBUG_PTS         0x00000200
1838
#define FF_DEBUG_ER          0x00000400
1839
#define FF_DEBUG_MMCO        0x00000800
1840
#define FF_DEBUG_BUGS        0x00001000
1841
#define FF_DEBUG_VIS_QP      0x00002000
1842
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1843
#define FF_DEBUG_BUFFERS     0x00008000
1844
#define FF_DEBUG_THREADS     0x00010000
1845

    
1846
    /**
1847
     * debug
1848
     * - encoding: Set by user.
1849
     * - decoding: Set by user.
1850
     */
1851
    int debug_mv;
1852
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1853
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1854
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1855

    
1856
    /**
1857
     * error
1858
     * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
1859
     * - decoding: unused
1860
     */
1861
    uint64_t error[4];
1862

    
1863
    /**
1864
     * minimum MB quantizer
1865
     * - encoding: unused
1866
     * - decoding: unused
1867
     */
1868
    int mb_qmin;
1869

    
1870
    /**
1871
     * maximum MB quantizer
1872
     * - encoding: unused
1873
     * - decoding: unused
1874
     */
1875
    int mb_qmax;
1876

    
1877
    /**
1878
     * motion estimation comparison function
1879
     * - encoding: Set by user.
1880
     * - decoding: unused
1881
     */
1882
    int me_cmp;
1883
    /**
1884
     * subpixel motion estimation comparison function
1885
     * - encoding: Set by user.
1886
     * - decoding: unused
1887
     */
1888
    int me_sub_cmp;
1889
    /**
1890
     * macroblock comparison function (not supported yet)
1891
     * - encoding: Set by user.
1892
     * - decoding: unused
1893
     */
1894
    int mb_cmp;
1895
    /**
1896
     * interlaced DCT comparison function
1897
     * - encoding: Set by user.
1898
     * - decoding: unused
1899
     */
1900
    int ildct_cmp;
1901
#define FF_CMP_SAD    0
1902
#define FF_CMP_SSE    1
1903
#define FF_CMP_SATD   2
1904
#define FF_CMP_DCT    3
1905
#define FF_CMP_PSNR   4
1906
#define FF_CMP_BIT    5
1907
#define FF_CMP_RD     6
1908
#define FF_CMP_ZERO   7
1909
#define FF_CMP_VSAD   8
1910
#define FF_CMP_VSSE   9
1911
#define FF_CMP_NSSE   10
1912
#define FF_CMP_W53    11
1913
#define FF_CMP_W97    12
1914
#define FF_CMP_DCTMAX 13
1915
#define FF_CMP_DCT264 14
1916
#define FF_CMP_CHROMA 256
1917

    
1918
    /**
1919
     * ME diamond size & shape
1920
     * - encoding: Set by user.
1921
     * - decoding: unused
1922
     */
1923
    int dia_size;
1924

    
1925
    /**
1926
     * amount of previous MV predictors (2a+1 x 2a+1 square)
1927
     * - encoding: Set by user.
1928
     * - decoding: unused
1929
     */
1930
    int last_predictor_count;
1931

    
1932
    /**
1933
     * prepass for motion estimation
1934
     * - encoding: Set by user.
1935
     * - decoding: unused
1936
     */
1937
    int pre_me;
1938

    
1939
    /**
1940
     * motion estimation prepass comparison function
1941
     * - encoding: Set by user.
1942
     * - decoding: unused
1943
     */
1944
    int me_pre_cmp;
1945

    
1946
    /**
1947
     * ME prepass diamond size & shape
1948
     * - encoding: Set by user.
1949
     * - decoding: unused
1950
     */
1951
    int pre_dia_size;
1952

    
1953
    /**
1954
     * subpel ME quality
1955
     * - encoding: Set by user.
1956
     * - decoding: unused
1957
     */
1958
    int me_subpel_quality;
1959

    
1960
    /**
1961
     * callback to negotiate the pixelFormat
1962
     * @param fmt is the list of formats which are supported by the codec,
1963
     * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
1964
     * The first is always the native one.
1965
     * @return the chosen format
1966
     * - encoding: unused
1967
     * - decoding: Set by user, if not set the native format will be chosen.
1968
     */
1969
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1970

    
1971
    /**
1972
     * DTG active format information (additional aspect ratio
1973
     * information only used in DVB MPEG-2 transport streams)
1974
     * 0 if not set.
1975
     *
1976
     * - encoding: unused
1977
     * - decoding: Set by decoder.
1978
     */
1979
    int dtg_active_format;
1980
#define FF_DTG_AFD_SAME         8
1981
#define FF_DTG_AFD_4_3          9
1982
#define FF_DTG_AFD_16_9         10
1983
#define FF_DTG_AFD_14_9         11
1984
#define FF_DTG_AFD_4_3_SP_14_9  13
1985
#define FF_DTG_AFD_16_9_SP_14_9 14
1986
#define FF_DTG_AFD_SP_4_3       15
1987

    
1988
    /**
1989
     * maximum motion estimation search range in subpel units
1990
     * If 0 then no limit.
1991
     *
1992
     * - encoding: Set by user.
1993
     * - decoding: unused
1994
     */
1995
    int me_range;
1996

    
1997
    /**
1998
     * intra quantizer bias
1999
     * - encoding: Set by user.
2000
     * - decoding: unused
2001
     */
2002
    int intra_quant_bias;
2003
#define FF_DEFAULT_QUANT_BIAS 999999
2004

    
2005
    /**
2006
     * inter quantizer bias
2007
     * - encoding: Set by user.
2008
     * - decoding: unused
2009
     */
2010
    int inter_quant_bias;
2011

    
2012
    /**
2013
     * color table ID
2014
     * - encoding: unused
2015
     * - decoding: Which clrtable should be used for 8bit RGB images.
2016
     *             Tables have to be stored somewhere. FIXME
2017
     */
2018
    int color_table_id;
2019

    
2020
    /**
2021
     * internal_buffer count
2022
     * Don't touch, used by libavcodec default_get_buffer().
2023
     */
2024
    int internal_buffer_count;
2025

    
2026
    /**
2027
     * internal_buffers
2028
     * Don't touch, used by libavcodec default_get_buffer().
2029
     */
2030
    void *internal_buffer;
2031

    
2032
    /**
2033
     * Global quality for codecs which cannot change it per frame.
2034
     * This should be proportional to MPEG-1/2/4 qscale.
2035
     * - encoding: Set by user.
2036
     * - decoding: unused
2037
     */
2038
    int global_quality;
2039

    
2040
#define FF_CODER_TYPE_VLC       0
2041
#define FF_CODER_TYPE_AC        1
2042
#define FF_CODER_TYPE_RAW       2
2043
#define FF_CODER_TYPE_RLE       3
2044
#define FF_CODER_TYPE_DEFLATE   4
2045
    /**
2046
     * coder type
2047
     * - encoding: Set by user.
2048
     * - decoding: unused
2049
     */
2050
    int coder_type;
2051

    
2052
    /**
2053
     * context model
2054
     * - encoding: Set by user.
2055
     * - decoding: unused
2056
     */
2057
    int context_model;
2058
#if 0
2059
    /**
2060
     *
2061
     * - encoding: unused
2062
     * - decoding: Set by user.
2063
     */
2064
    uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
2065
#endif
2066

    
2067
    /**
2068
     * slice flags
2069
     * - encoding: unused
2070
     * - decoding: Set by user.
2071
     */
2072
    int slice_flags;
2073
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
2074
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
2075
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
2076

    
2077
    /**
2078
     * XVideo Motion Acceleration
2079
     * - encoding: forbidden
2080
     * - decoding: set by decoder
2081
     */
2082
    int xvmc_acceleration;
2083

    
2084
    /**
2085
     * macroblock decision mode
2086
     * - encoding: Set by user.
2087
     * - decoding: unused
2088
     */
2089
    int mb_decision;
2090
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
2091
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
2092
#define FF_MB_DECISION_RD     2        ///< rate distortion
2093

    
2094
    /**
2095
     * custom intra quantization matrix
2096
     * - encoding: Set by user, can be NULL.
2097
     * - decoding: Set by libavcodec.
2098
     */
2099
    uint16_t *intra_matrix;
2100

    
2101
    /**
2102
     * custom inter quantization matrix
2103
     * - encoding: Set by user, can be NULL.
2104
     * - decoding: Set by libavcodec.
2105
     */
2106
    uint16_t *inter_matrix;
2107

    
2108
    /**
2109
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
2110
     * This is used to work around some encoder bugs.
2111
     * - encoding: unused
2112
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
2113
     */
2114
    unsigned int stream_codec_tag;
2115

    
2116
    /**
2117
     * scene change detection threshold
2118
     * 0 is default, larger means fewer detected scene changes.
2119
     * - encoding: Set by user.
2120
     * - decoding: unused
2121
     */
2122
    int scenechange_threshold;
2123

    
2124
    /**
2125
     * minimum Lagrange multipler
2126
     * - encoding: Set by user.
2127
     * - decoding: unused
2128
     */
2129
    int lmin;
2130

    
2131
    /**
2132
     * maximum Lagrange multipler
2133
     * - encoding: Set by user.
2134
     * - decoding: unused
2135
     */
2136
    int lmax;
2137

    
2138
#if FF_API_PALETTE_CONTROL
2139
    /**
2140
     * palette control structure
2141
     * - encoding: ??? (no palette-enabled encoder yet)
2142
     * - decoding: Set by user.
2143
     */
2144
    struct AVPaletteControl *palctrl;
2145
#endif
2146

    
2147
    /**
2148
     * noise reduction strength
2149
     * - encoding: Set by user.
2150
     * - decoding: unused
2151
     */
2152
    int noise_reduction;
2153

    
2154
    /**
2155
     * Called at the beginning of a frame to get cr buffer for it.
2156
     * Buffer type (size, hints) must be the same. libavcodec won't check it.
2157
     * libavcodec will pass previous buffer in pic, function should return
2158
     * same buffer or new buffer with old frame "painted" into it.
2159
     * If pic.data[0] == NULL must behave like get_buffer().
2160
     * if CODEC_CAP_DR1 is not set then reget_buffer() must call
2161
     * avcodec_default_reget_buffer() instead of providing buffers allocated by
2162
     * some other means.
2163
     * - encoding: unused
2164
     * - decoding: Set by libavcodec, user can override.
2165
     */
2166
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
2167

    
2168
    /**
2169
     * Number of bits which should be loaded into the rc buffer before decoding starts.
2170
     * - encoding: Set by user.
2171
     * - decoding: unused
2172
     */
2173
    int rc_initial_buffer_occupancy;
2174

    
2175
    /**
2176
     *
2177
     * - encoding: Set by user.
2178
     * - decoding: unused
2179
     */
2180
    int inter_threshold;
2181

    
2182
    /**
2183
     * CODEC_FLAG2_*
2184
     * - encoding: Set by user.
2185
     * - decoding: Set by user.
2186
     */
2187
    int flags2;
2188

    
2189
    /**
2190
     * Simulates errors in the bitstream to test error concealment.
2191
     * - encoding: Set by user.
2192
     * - decoding: unused
2193
     */
2194
    int error_rate;
2195

    
2196
    /**
2197
     * MP3 antialias algorithm, see FF_AA_* below.
2198
     * - encoding: unused
2199
     * - decoding: Set by user.
2200
     */
2201
    int antialias_algo;
2202
#define FF_AA_AUTO    0
2203
#define FF_AA_FASTINT 1 //not implemented yet
2204
#define FF_AA_INT     2
2205
#define FF_AA_FLOAT   3
2206
    /**
2207
     * quantizer noise shaping
2208
     * - encoding: Set by user.
2209
     * - decoding: unused
2210
     */
2211
    int quantizer_noise_shaping;
2212

    
2213
    /**
2214
     * thread count
2215
     * is used to decide how many independent tasks should be passed to execute()
2216
     * - encoding: Set by user.
2217
     * - decoding: Set by user.
2218
     */
2219
    int thread_count;
2220

    
2221
    /**
2222
     * The codec may call this to execute several independent things.
2223
     * It will return only after finishing all tasks.
2224
     * The user may replace this with some multithreaded implementation,
2225
     * the default implementation will execute the parts serially.
2226
     * @param count the number of things to execute
2227
     * - encoding: Set by libavcodec, user can override.
2228
     * - decoding: Set by libavcodec, user can override.
2229
     */
2230
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size);
2231

    
2232
    /**
2233
     * thread opaque
2234
     * Can be used by execute() to store some per AVCodecContext stuff.
2235
     * - encoding: set by execute()
2236
     * - decoding: set by execute()
2237
     */
2238
    void *thread_opaque;
2239

    
2240
    /**
2241
     * Motion estimation threshold below which no motion estimation is
2242
     * performed, but instead the user specified motion vectors are used.
2243
     *
2244
     * - encoding: Set by user.
2245
     * - decoding: unused
2246
     */
2247
     int me_threshold;
2248

    
2249
    /**
2250
     * Macroblock threshold below which the user specified macroblock types will be used.
2251
     * - encoding: Set by user.
2252
     * - decoding: unused
2253
     */
2254
     int mb_threshold;
2255

    
2256
    /**
2257
     * precision of the intra DC coefficient - 8
2258
     * - encoding: Set by user.
2259
     * - decoding: unused
2260
     */
2261
     int intra_dc_precision;
2262

    
2263
    /**
2264
     * noise vs. sse weight for the nsse comparsion function
2265
     * - encoding: Set by user.
2266
     * - decoding: unused
2267
     */
2268
     int nsse_weight;
2269

    
2270
    /**
2271
     * Number of macroblock rows at the top which are skipped.
2272
     * - encoding: unused
2273
     * - decoding: Set by user.
2274
     */
2275
     int skip_top;
2276

    
2277
    /**
2278
     * Number of macroblock rows at the bottom which are skipped.
2279
     * - encoding: unused
2280
     * - decoding: Set by user.
2281
     */
2282
     int skip_bottom;
2283

    
2284
    /**
2285
     * profile
2286
     * - encoding: Set by user.
2287
     * - decoding: Set by libavcodec.
2288
     */
2289
     int profile;
2290
#define FF_PROFILE_UNKNOWN -99
2291
#define FF_PROFILE_RESERVED -100
2292

    
2293
#define FF_PROFILE_AAC_MAIN 0
2294
#define FF_PROFILE_AAC_LOW  1
2295
#define FF_PROFILE_AAC_SSR  2
2296
#define FF_PROFILE_AAC_LTP  3
2297

    
2298
#define FF_PROFILE_DTS         20
2299
#define FF_PROFILE_DTS_ES      30
2300
#define FF_PROFILE_DTS_96_24   40
2301
#define FF_PROFILE_DTS_HD_HRA  50
2302
#define FF_PROFILE_DTS_HD_MA   60
2303

    
2304
#define FF_PROFILE_MPEG2_422    0
2305
#define FF_PROFILE_MPEG2_HIGH   1
2306
#define FF_PROFILE_MPEG2_SS     2
2307
#define FF_PROFILE_MPEG2_SNR_SCALABLE  3
2308
#define FF_PROFILE_MPEG2_MAIN   4
2309
#define FF_PROFILE_MPEG2_SIMPLE 5
2310

    
2311
#define FF_PROFILE_H264_CONSTRAINED  (1<<9)  // 8+1; constraint_set1_flag
2312
#define FF_PROFILE_H264_INTRA        (1<<11) // 8+3; constraint_set3_flag
2313

    
2314
#define FF_PROFILE_H264_BASELINE             66
2315
#define FF_PROFILE_H264_CONSTRAINED_BASELINE (66|FF_PROFILE_H264_CONSTRAINED)
2316
#define FF_PROFILE_H264_MAIN                 77
2317
#define FF_PROFILE_H264_EXTENDED             88
2318
#define FF_PROFILE_H264_HIGH                 100
2319
#define FF_PROFILE_H264_HIGH_10              110
2320
#define FF_PROFILE_H264_HIGH_10_INTRA        (110|FF_PROFILE_H264_INTRA)
2321
#define FF_PROFILE_H264_HIGH_422             122
2322
#define FF_PROFILE_H264_HIGH_422_INTRA       (122|FF_PROFILE_H264_INTRA)
2323
#define FF_PROFILE_H264_HIGH_444             144
2324
#define FF_PROFILE_H264_HIGH_444_PREDICTIVE  244
2325
#define FF_PROFILE_H264_HIGH_444_INTRA       (244|FF_PROFILE_H264_INTRA)
2326
#define FF_PROFILE_H264_CAVLC_444            44
2327

    
2328
#define FF_PROFILE_VC1_SIMPLE   0
2329
#define FF_PROFILE_VC1_MAIN     1
2330
#define FF_PROFILE_VC1_COMPLEX  2
2331
#define FF_PROFILE_VC1_ADVANCED 3
2332

    
2333
    /**
2334
     * level
2335
     * - encoding: Set by user.
2336
     * - decoding: Set by libavcodec.
2337
     */
2338
     int level;
2339
#define FF_LEVEL_UNKNOWN -99
2340

    
2341
    /**
2342
     * low resolution decoding, 1-> 1/2 size, 2->1/4 size
2343
     * - encoding: unused
2344
     * - decoding: Set by user.
2345
     */
2346
     int lowres;
2347

    
2348
    /**
2349
     * Bitstream width / height, may be different from width/height if lowres
2350
     * or other things are used.
2351
     * - encoding: unused
2352
     * - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
2353
     */
2354
    int coded_width, coded_height;
2355

    
2356
    /**
2357
     * frame skip threshold
2358
     * - encoding: Set by user.
2359
     * - decoding: unused
2360
     */
2361
    int frame_skip_threshold;
2362

    
2363
    /**
2364
     * frame skip factor
2365
     * - encoding: Set by user.
2366
     * - decoding: unused
2367
     */
2368
    int frame_skip_factor;
2369

    
2370
    /**
2371
     * frame skip exponent
2372
     * - encoding: Set by user.
2373
     * - decoding: unused
2374
     */
2375
    int frame_skip_exp;
2376

    
2377
    /**
2378
     * frame skip comparison function
2379
     * - encoding: Set by user.
2380
     * - decoding: unused
2381
     */
2382
    int frame_skip_cmp;
2383

    
2384
    /**
2385
     * Border processing masking, raises the quantizer for mbs on the borders
2386
     * of the picture.
2387
     * - encoding: Set by user.
2388
     * - decoding: unused
2389
     */
2390
    float border_masking;
2391

    
2392
    /**
2393
     * minimum MB lagrange multipler
2394
     * - encoding: Set by user.
2395
     * - decoding: unused
2396
     */
2397
    int mb_lmin;
2398

    
2399
    /**
2400
     * maximum MB lagrange multipler
2401
     * - encoding: Set by user.
2402
     * - decoding: unused
2403
     */
2404
    int mb_lmax;
2405

    
2406
    /**
2407
     *
2408
     * - encoding: Set by user.
2409
     * - decoding: unused
2410
     */
2411
    int me_penalty_compensation;
2412

    
2413
    /**
2414
     *
2415
     * - encoding: unused
2416
     * - decoding: Set by user.
2417
     */
2418
    enum AVDiscard skip_loop_filter;
2419

    
2420
    /**
2421
     *
2422
     * - encoding: unused
2423
     * - decoding: Set by user.
2424
     */
2425
    enum AVDiscard skip_idct;
2426

    
2427
    /**
2428
     *
2429
     * - encoding: unused
2430
     * - decoding: Set by user.
2431
     */
2432
    enum AVDiscard skip_frame;
2433

    
2434
    /**
2435
     *
2436
     * - encoding: Set by user.
2437
     * - decoding: unused
2438
     */
2439
    int bidir_refine;
2440

    
2441
    /**
2442
     *
2443
     * - encoding: Set by user.
2444
     * - decoding: unused
2445
     */
2446
    int brd_scale;
2447

    
2448
    /**
2449
     * constant rate factor - quality-based VBR - values ~correspond to qps
2450
     * - encoding: Set by user.
2451
     * - decoding: unused
2452
     */
2453
    float crf;
2454

    
2455
    /**
2456
     * constant quantization parameter rate control method
2457
     * - encoding: Set by user.
2458
     * - decoding: unused
2459
     */
2460
    int cqp;
2461

    
2462
    /**
2463
     * minimum GOP size
2464
     * - encoding: Set by user.
2465
     * - decoding: unused
2466
     */
2467
    int keyint_min;
2468

    
2469
    /**
2470
     * number of reference frames
2471
     * - encoding: Set by user.
2472
     * - decoding: Set by lavc.
2473
     */
2474
    int refs;
2475

    
2476
    /**
2477
     * chroma qp offset from luma
2478
     * - encoding: Set by user.
2479
     * - decoding: unused
2480
     */
2481
    int chromaoffset;
2482

    
2483
    /**
2484
     * Influences how often B-frames are used.
2485
     * - encoding: Set by user.
2486
     * - decoding: unused
2487
     */
2488
    int bframebias;
2489

    
2490
    /**
2491
     * trellis RD quantization
2492
     * - encoding: Set by user.
2493
     * - decoding: unused
2494
     */
2495
    int trellis;
2496

    
2497
    /**
2498
     * Reduce fluctuations in qp (before curve compression).
2499
     * - encoding: Set by user.
2500
     * - decoding: unused
2501
     */
2502
    float complexityblur;
2503

    
2504
    /**
2505
     * in-loop deblocking filter alphac0 parameter
2506
     * alpha is in the range -6...6
2507
     * - encoding: Set by user.
2508
     * - decoding: unused
2509
     */
2510
    int deblockalpha;
2511

    
2512
    /**
2513
     * in-loop deblocking filter beta parameter
2514
     * beta is in the range -6...6
2515
     * - encoding: Set by user.
2516
     * - decoding: unused
2517
     */
2518
    int deblockbeta;
2519

    
2520
    /**
2521
     * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
2522
     * - encoding: Set by user.
2523
     * - decoding: unused
2524
     */
2525
    int partitions;
2526
#define X264_PART_I4X4 0x001  /* Analyze i4x4 */
2527
#define X264_PART_I8X8 0x002  /* Analyze i8x8 (requires 8x8 transform) */
2528
#define X264_PART_P8X8 0x010  /* Analyze p16x8, p8x16 and p8x8 */
2529
#define X264_PART_P4X4 0x020  /* Analyze p8x4, p4x8, p4x4 */
2530
#define X264_PART_B8X8 0x100  /* Analyze b16x8, b8x16 and b8x8 */
2531

    
2532
    /**
2533
     * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto)
2534
     * - encoding: Set by user.
2535
     * - decoding: unused
2536
     */
2537
    int directpred;
2538

    
2539
    /**
2540
     * Audio cutoff bandwidth (0 means "automatic")
2541
     * - encoding: Set by user.
2542
     * - decoding: unused
2543
     */
2544
    int cutoff;
2545

    
2546
    /**
2547
     * Multiplied by qscale for each frame and added to scene_change_score.
2548
     * - encoding: Set by user.
2549
     * - decoding: unused
2550
     */
2551
    int scenechange_factor;
2552

    
2553
    /**
2554
     *
2555
     * Note: Value depends upon the compare function used for fullpel ME.
2556
     * - encoding: Set by user.
2557
     * - decoding: unused
2558
     */
2559
    int mv0_threshold;
2560

    
2561
    /**
2562
     * Adjusts sensitivity of b_frame_strategy 1.
2563
     * - encoding: Set by user.
2564
     * - decoding: unused
2565
     */
2566
    int b_sensitivity;
2567

    
2568
    /**
2569
     * - encoding: Set by user.
2570
     * - decoding: unused
2571
     */
2572
    int compression_level;
2573
#define FF_COMPRESSION_DEFAULT -1
2574

    
2575
#if FF_API_USE_LPC
2576
    /**
2577
     * Sets whether to use LPC mode - used by FLAC encoder.
2578
     * - encoding: Set by user.
2579
     * - decoding: unused
2580
     * @deprecated Deprecated in favor of lpc_type and lpc_passes.
2581
     */
2582
    int use_lpc;
2583
#endif
2584

    
2585
    /**
2586
     * LPC coefficient precision - used by FLAC encoder
2587
     * - encoding: Set by user.
2588
     * - decoding: unused
2589
     */
2590
    int lpc_coeff_precision;
2591

    
2592
    /**
2593
     * - encoding: Set by user.
2594
     * - decoding: unused
2595
     */
2596
    int min_prediction_order;
2597

    
2598
    /**
2599
     * - encoding: Set by user.
2600
     * - decoding: unused
2601
     */
2602
    int max_prediction_order;
2603

    
2604
    /**
2605
     * search method for selecting prediction order
2606
     * - encoding: Set by user.
2607
     * - decoding: unused
2608
     */
2609
    int prediction_order_method;
2610

    
2611
    /**
2612
     * - encoding: Set by user.
2613
     * - decoding: unused
2614
     */
2615
    int min_partition_order;
2616

    
2617
    /**
2618
     * - encoding: Set by user.
2619
     * - decoding: unused
2620
     */
2621
    int max_partition_order;
2622

    
2623
    /**
2624
     * GOP timecode frame start number, in non drop frame format
2625
     * - encoding: Set by user.
2626
     * - decoding: unused
2627
     */
2628
    int64_t timecode_frame_start;
2629

    
2630
#if LIBAVCODEC_VERSION_MAJOR < 53
2631
    /**
2632
     * Decoder should decode to this many channels if it can (0 for default)
2633
     * - encoding: unused
2634
     * - decoding: Set by user.
2635
     * @deprecated Deprecated in favor of request_channel_layout.
2636
     */
2637
    int request_channels;
2638
#endif
2639

    
2640
    /**
2641
     * Percentage of dynamic range compression to be applied by the decoder.
2642
     * The default value is 1.0, corresponding to full compression.
2643
     * - encoding: unused
2644
     * - decoding: Set by user.
2645
     */
2646
    float drc_scale;
2647

    
2648
    /**
2649
     * opaque 64bit number (generally a PTS) that will be reordered and
2650
     * output in AVFrame.reordered_opaque
2651
     * @deprecated in favor of pkt_pts
2652
     * - encoding: unused
2653
     * - decoding: Set by user.
2654
     */
2655
    int64_t reordered_opaque;
2656

    
2657
    /**
2658
     * Bits per sample/pixel of internal libavcodec pixel/sample format.
2659
     * This field is applicable only when sample_fmt is AV_SAMPLE_FMT_S32.
2660
     * - encoding: set by user.
2661
     * - decoding: set by libavcodec.
2662
     */
2663
    int bits_per_raw_sample;
2664

    
2665
    /**
2666
     * Audio channel layout.
2667
     * - encoding: set by user.
2668
     * - decoding: set by libavcodec.
2669
     */
2670
    int64_t channel_layout;
2671

    
2672
    /**
2673
     * Request decoder to use this channel layout if it can (0 for default)
2674
     * - encoding: unused
2675
     * - decoding: Set by user.
2676
     */
2677
    int64_t request_channel_layout;
2678

    
2679
    /**
2680
     * Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow.
2681
     * - encoding: Set by user.
2682
     * - decoding: unused.
2683
     */
2684
    float rc_max_available_vbv_use;
2685

    
2686
    /**
2687
     * Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow.
2688
     * - encoding: Set by user.
2689
     * - decoding: unused.
2690
     */
2691
    float rc_min_vbv_overflow_use;
2692

    
2693
    /**
2694
     * Hardware accelerator in use
2695
     * - encoding: unused.
2696
     * - decoding: Set by libavcodec
2697
     */
2698
    struct AVHWAccel *hwaccel;
2699

    
2700
    /**
2701
     * For some codecs, the time base is closer to the field rate than the frame rate.
2702
     * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration
2703
     * if no telecine is used ...
2704
     *
2705
     * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2.
2706
     */
2707
    int ticks_per_frame;
2708

    
2709
    /**
2710
     * Hardware accelerator context.
2711
     * For some hardware accelerators, a global context needs to be
2712
     * provided by the user. In that case, this holds display-dependent
2713
     * data FFmpeg cannot instantiate itself. Please refer to the
2714
     * FFmpeg HW accelerator documentation to know how to fill this
2715
     * is. e.g. for VA API, this is a struct vaapi_context.
2716
     * - encoding: unused
2717
     * - decoding: Set by user
2718
     */
2719
    void *hwaccel_context;
2720

    
2721
    /**
2722
     * Chromaticity coordinates of the source primaries.
2723
     * - encoding: Set by user
2724
     * - decoding: Set by libavcodec
2725
     */
2726
    enum AVColorPrimaries color_primaries;
2727

    
2728
    /**
2729
     * Color Transfer Characteristic.
2730
     * - encoding: Set by user
2731
     * - decoding: Set by libavcodec
2732
     */
2733
    enum AVColorTransferCharacteristic color_trc;
2734

    
2735
    /**
2736
     * YUV colorspace type.
2737
     * - encoding: Set by user
2738
     * - decoding: Set by libavcodec
2739
     */
2740
    enum AVColorSpace colorspace;
2741

    
2742
    /**
2743
     * MPEG vs JPEG YUV range.
2744
     * - encoding: Set by user
2745
     * - decoding: Set by libavcodec
2746
     */
2747
    enum AVColorRange color_range;
2748

    
2749
    /**
2750
     * This defines the location of chroma samples.
2751
     * - encoding: Set by user
2752
     * - decoding: Set by libavcodec
2753
     */
2754
    enum AVChromaLocation chroma_sample_location;
2755

    
2756
    /**
2757
     * The codec may call this to execute several independent things.
2758
     * It will return only after finishing all tasks.
2759
     * The user may replace this with some multithreaded implementation,
2760
     * the default implementation will execute the parts serially.
2761
     * Also see avcodec_thread_init and e.g. the --enable-pthread configure option.
2762
     * @param c context passed also to func
2763
     * @param count the number of things to execute
2764
     * @param arg2 argument passed unchanged to func
2765
     * @param ret return values of executed functions, must have space for "count" values. May be NULL.
2766
     * @param func function that will be called count times, with jobnr from 0 to count-1.
2767
     *             threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no
2768
     *             two instances of func executing at the same time will have the same threadnr.
2769
     * @return always 0 currently, but code should handle a future improvement where when any call to func
2770
     *         returns < 0 no further calls to func may be done and < 0 is returned.
2771
     * - encoding: Set by libavcodec, user can override.
2772
     * - decoding: Set by libavcodec, user can override.
2773
     */
2774
    int (*execute2)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count);
2775

    
2776
    /**
2777
     * explicit P-frame weighted prediction analysis method
2778
     * 0: off
2779
     * 1: fast blind weighting (one reference duplicate with -1 offset)
2780
     * 2: smart weighting (full fade detection analysis)
2781
     * - encoding: Set by user.
2782
     * - decoding: unused
2783
     */
2784
    int weighted_p_pred;
2785

    
2786
    /**
2787
     * AQ mode
2788
     * 0: Disabled
2789
     * 1: Variance AQ (complexity mask)
2790
     * 2: Auto-variance AQ (experimental)
2791
     * - encoding: Set by user
2792
     * - decoding: unused
2793
     */
2794
    int aq_mode;
2795

    
2796
    /**
2797
     * AQ strength
2798
     * Reduces blocking and blurring in flat and textured areas.
2799
     * - encoding: Set by user
2800
     * - decoding: unused
2801
     */
2802
    float aq_strength;
2803

    
2804
    /**
2805
     * PSY RD
2806
     * Strength of psychovisual optimization
2807
     * - encoding: Set by user
2808
     * - decoding: unused
2809
     */
2810
    float psy_rd;
2811

    
2812
    /**
2813
     * PSY trellis
2814
     * Strength of psychovisual optimization
2815
     * - encoding: Set by user
2816
     * - decoding: unused
2817
     */
2818
    float psy_trellis;
2819

    
2820
    /**
2821
     * RC lookahead
2822
     * Number of frames for frametype and ratecontrol lookahead
2823
     * - encoding: Set by user
2824
     * - decoding: unused
2825
     */
2826
    int rc_lookahead;
2827

    
2828
    /**
2829
     * Constant rate factor maximum
2830
     * With CRF encoding mode and VBV restrictions enabled, prevents quality from being worse
2831
     * than crf_max, even if doing so would violate VBV restrictions.
2832
     * - encoding: Set by user.
2833
     * - decoding: unused
2834
     */
2835
    float crf_max;
2836

    
2837
    int log_level_offset;
2838

    
2839
    /**
2840
     * Determines which LPC analysis algorithm to use.
2841
     * - encoding: Set by user
2842
     * - decoding: unused
2843
     */
2844
    enum AVLPCType lpc_type;
2845

    
2846
    /**
2847
     * Number of passes to use for Cholesky factorization during LPC analysis
2848
     * - encoding: Set by user
2849
     * - decoding: unused
2850
     */
2851
    int lpc_passes;
2852

    
2853
    /**
2854
     * Number of slices.
2855
     * Indicates number of picture subdivisions. Used for parallelized
2856
     * decoding.
2857
     * - encoding: Set by user
2858
     * - decoding: unused
2859
     */
2860
    int slices;
2861

    
2862
    /**
2863
     * Header containing style information for text subtitles.
2864
     * For SUBTITLE_ASS subtitle type, it should contain the whole ASS
2865
     * [Script Info] and [V4+ Styles] section, plus the [Events] line and
2866
     * the Format line following. It shouldn't include any Dialogue line.
2867
     * - encoding: Set/allocated/freed by user (before avcodec_open())
2868
     * - decoding: Set/allocated/freed by libavcodec (by avcodec_open())
2869
     */
2870
    uint8_t *subtitle_header;
2871
    int subtitle_header_size;
2872

    
2873
    /**
2874
     * Current packet as passed into the decoder, to avoid having
2875
     * to pass the packet into every function. Currently only valid
2876
     * inside lavc and get/release_buffer callbacks.
2877
     * - decoding: set by avcodec_decode_*, read by get_buffer() for setting pkt_pts
2878
     * - encoding: unused
2879
     */
2880
    AVPacket *pkt;
2881

    
2882
    /**
2883
     * Whether this is a copy of the context which had init() called on it.
2884
     * This is used by multithreading - shared tables and picture pointers
2885
     * should be freed from the original context only.
2886
     * - encoding: Set by libavcodec.
2887
     * - decoding: Set by libavcodec.
2888
     */
2889
    int is_copy;
2890

    
2891
    /**
2892
     * Which multithreading methods to use.
2893
     * Use of FF_THREAD_FRAME will increase decoding delay by one frame per thread,
2894
     * so clients which cannot provide future frames should not use it.
2895
     *
2896
     * - encoding: Set by user, otherwise the default is used.
2897
     * - decoding: Set by user, otherwise the default is used.
2898
     */
2899
    int thread_type;
2900
#define FF_THREAD_FRAME   1 //< Decode more than one frame at once
2901
#define FF_THREAD_SLICE   2 //< Decode more than one part of a single frame at once
2902

    
2903
    /**
2904
     * Which multithreading methods are in use by the codec.
2905
     * - encoding: Set by libavcodec.
2906
     * - decoding: Set by libavcodec.
2907
     */
2908
    int active_thread_type;
2909

    
2910
    /**
2911
     * Set by the client if its custom get_buffer() callback can be called
2912
     * from another thread, which allows faster multithreaded decoding.
2913
     * draw_horiz_band() will be called from other threads regardless of this setting.
2914
     * Ignored if the default get_buffer() is used.
2915
     * - encoding: Set by user.
2916
     * - decoding: Set by user.
2917
     */
2918
    int thread_safe_callbacks;
2919

    
2920
    /**
2921
     * VBV delay coded in the last frame (in periods of a 27 MHz clock).
2922
     * Used for compliant TS muxing.
2923
     * - encoding: Set by libavcodec.
2924
     * - decoding: unused.
2925
     */
2926
    uint64_t vbv_delay;
2927

    
2928
    /**
2929
     * Current statistics for PTS correction.
2930
     * - decoding: maintained and used by libavcodec, not intended to be used by user apps
2931
     * - encoding: unused
2932
     */
2933
    int64_t pts_correction_num_faulty_pts; /// Number of incorrect PTS values so far
2934
    int64_t pts_correction_num_faulty_dts; /// Number of incorrect DTS values so far
2935
    int64_t pts_correction_last_pts;       /// PTS of the last frame
2936
    int64_t pts_correction_last_dts;       /// DTS of the last frame
2937

    
2938
} AVCodecContext;
2939

    
2940
/**
2941
 * AVProfile.
2942
 */
2943
typedef struct AVProfile {
2944
    int profile;
2945
    const char *name; ///< short name for the profile
2946
} AVProfile;
2947

    
2948
/**
2949
 * AVCodec.
2950
 */
2951
typedef struct AVCodec {
2952
    /**
2953
     * Name of the codec implementation.
2954
     * The name is globally unique among encoders and among decoders (but an
2955
     * encoder and a decoder can share the same name).
2956
     * This is the primary way to find a codec from the user perspective.
2957
     */
2958
    const char *name;
2959
    enum AVMediaType type;
2960
    enum CodecID id;
2961
    int priv_data_size;
2962
    int (*init)(AVCodecContext *);
2963
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2964
    int (*close)(AVCodecContext *);
2965
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt);
2966
    /**
2967
     * Codec capabilities.
2968
     * see CODEC_CAP_*
2969
     */
2970
    int capabilities;
2971
    struct AVCodec *next;
2972
    /**
2973
     * Flush buffers.
2974
     * Will be called when seeking
2975
     */
2976
    void (*flush)(AVCodecContext *);
2977
    const AVRational *supported_framerates; ///< array of supported framerates, or NULL if any, array is terminated by {0,0}
2978
    const enum PixelFormat *pix_fmts;       ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1
2979
    /**
2980
     * Descriptive name for the codec, meant to be more human readable than name.
2981
     * You should use the NULL_IF_CONFIG_SMALL() macro to define it.
2982
     */
2983
    const char *long_name;
2984
    const int *supported_samplerates;       ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0
2985
    const enum AVSampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1
2986
    const int64_t *channel_layouts;         ///< array of support channel layouts, or NULL if unknown. array is terminated by 0
2987
    uint8_t max_lowres;                     ///< maximum value for lowres supported by the decoder
2988

    
2989
    AVClass *priv_class;                    ///< AVClass for the private context
2990

    
2991
    const AVProfile *profiles;              ///< array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN}
2992

    
2993
    /**
2994
     * @defgroup framethreading Frame-level threading support functions.
2995
     * @{
2996
     */
2997
    /**
2998
     * If defined, called on thread contexts when they are created.
2999
     * If the codec allocates writable tables in init(), re-allocate them here.
3000
     * priv_data will be set to a copy of the original.
3001
     */
3002
    int (*init_thread_copy)(AVCodecContext *);
3003
    /**
3004
     * Copy necessary context variables from a previous thread context to the current one.
3005
     * If not defined, the next thread will start automatically; otherwise, the codec
3006
     * must call ff_thread_finish_setup().
3007
     *
3008
     * dst and src will (rarely) point to the same context, in which case memcpy should be skipped.
3009
     */
3010
    int (*update_thread_context)(AVCodecContext *dst, const AVCodecContext *src);
3011
    /** @} */
3012
} AVCodec;
3013

    
3014
/**
3015
 * AVHWAccel.
3016
 */
3017
typedef struct AVHWAccel {
3018
    /**
3019
     * Name of the hardware accelerated codec.
3020
     * The name is globally unique among encoders and among decoders (but an
3021
     * encoder and a decoder can share the same name).
3022
     */
3023
    const char *name;
3024

    
3025
    /**
3026
     * Type of codec implemented by the hardware accelerator.
3027
     *
3028
     * See AVMEDIA_TYPE_xxx
3029
     */
3030
    enum AVMediaType type;
3031

    
3032
    /**
3033
     * Codec implemented by the hardware accelerator.
3034
     *
3035
     * See CODEC_ID_xxx
3036
     */
3037
    enum CodecID id;
3038

    
3039
    /**
3040
     * Supported pixel format.
3041
     *
3042
     * Only hardware accelerated formats are supported here.
3043
     */
3044
    enum PixelFormat pix_fmt;
3045

    
3046
    /**
3047
     * Hardware accelerated codec capabilities.
3048
     * see FF_HWACCEL_CODEC_CAP_*
3049
     */
3050
    int capabilities;
3051

    
3052
    struct AVHWAccel *next;
3053

    
3054
    /**
3055
     * Called at the beginning of each frame or field picture.
3056
     *
3057
     * Meaningful frame information (codec specific) is guaranteed to
3058
     * be parsed at this point. This function is mandatory.
3059
     *
3060
     * Note that buf can be NULL along with buf_size set to 0.
3061
     * Otherwise, this means the whole frame is available at this point.
3062
     *
3063
     * @param avctx the codec context
3064
     * @param buf the frame data buffer base
3065
     * @param buf_size the size of the frame in bytes
3066
     * @return zero if successful, a negative value otherwise
3067
     */
3068
    int (*start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
3069

    
3070
    /**
3071
     * Callback for each slice.
3072
     *
3073
     * Meaningful slice information (codec specific) is guaranteed to
3074
     * be parsed at this point. This function is mandatory.
3075
     *
3076
     * @param avctx the codec context
3077
     * @param buf the slice data buffer base
3078
     * @param buf_size the size of the slice in bytes
3079
     * @return zero if successful, a negative value otherwise
3080
     */
3081
    int (*decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
3082

    
3083
    /**
3084
     * Called at the end of each frame or field picture.
3085
     *
3086
     * The whole picture is parsed at this point and can now be sent
3087
     * to the hardware accelerator. This function is mandatory.
3088
     *
3089
     * @param avctx the codec context
3090
     * @return zero if successful, a negative value otherwise
3091
     */
3092
    int (*end_frame)(AVCodecContext *avctx);
3093

    
3094
    /**
3095
     * Size of HW accelerator private data.
3096
     *
3097
     * Private data is allocated with av_mallocz() before
3098
     * AVCodecContext.get_buffer() and deallocated after
3099
     * AVCodecContext.release_buffer().
3100
     */
3101
    int priv_data_size;
3102
} AVHWAccel;
3103

    
3104
/**
3105
 * four components are given, that's all.
3106
 * the last component is alpha
3107
 */
3108
typedef struct AVPicture {
3109
    uint8_t *data[4];
3110
    int linesize[4];       ///< number of bytes per line
3111
} AVPicture;
3112

    
3113
#if FF_API_PALETTE_CONTROL
3114
/**
3115
 * AVPaletteControl
3116
 * This structure defines a method for communicating palette changes
3117
 * between and demuxer and a decoder.
3118
 *
3119
 * @deprecated Use AVPacket to send palette changes instead.
3120
 * This is totally broken.
3121
 */
3122
#define AVPALETTE_SIZE 1024
3123
#define AVPALETTE_COUNT 256
3124
typedef struct AVPaletteControl {
3125

    
3126
    /* Demuxer sets this to 1 to indicate the palette has changed;
3127
     * decoder resets to 0. */
3128
    int palette_changed;
3129

    
3130
    /* 4-byte ARGB palette entries, stored in native byte order; note that
3131
     * the individual palette components should be on a 8-bit scale; if
3132
     * the palette data comes from an IBM VGA native format, the component
3133
     * data is probably 6 bits in size and needs to be scaled. */
3134
    unsigned int palette[AVPALETTE_COUNT];
3135

    
3136
} AVPaletteControl attribute_deprecated;
3137
#endif
3138

    
3139
enum AVSubtitleType {
3140
    SUBTITLE_NONE,
3141

    
3142
    SUBTITLE_BITMAP,                ///< A bitmap, pict will be set
3143

    
3144
    /**
3145
     * Plain text, the text field must be set by the decoder and is
3146
     * authoritative. ass and pict fields may contain approximations.
3147
     */
3148
    SUBTITLE_TEXT,
3149

    
3150
    /**
3151
     * Formatted text, the ass field must be set by the decoder and is
3152
     * authoritative. pict and text fields may contain approximations.
3153
     */
3154
    SUBTITLE_ASS,
3155
};
3156

    
3157
typedef struct AVSubtitleRect {
3158
    int x;         ///< top left corner  of pict, undefined when pict is not set
3159
    int y;         ///< top left corner  of pict, undefined when pict is not set
3160
    int w;         ///< width            of pict, undefined when pict is not set
3161
    int h;         ///< height           of pict, undefined when pict is not set
3162
    int nb_colors; ///< number of colors in pict, undefined when pict is not set
3163

    
3164
    /**
3165
     * data+linesize for the bitmap of this subtitle.
3166
     * can be set for text/ass as well once they where rendered
3167
     */
3168
    AVPicture pict;
3169
    enum AVSubtitleType type;
3170

    
3171
    char *text;                     ///< 0 terminated plain UTF-8 text
3172

    
3173
    /**
3174
     * 0 terminated ASS/SSA compatible event line.
3175
     * The pressentation of this is unaffected by the other values in this
3176
     * struct.
3177
     */
3178
    char *ass;
3179
} AVSubtitleRect;
3180

    
3181
typedef struct AVSubtitle {
3182
    uint16_t format; /* 0 = graphics */
3183
    uint32_t start_display_time; /* relative to packet pts, in ms */
3184
    uint32_t end_display_time; /* relative to packet pts, in ms */
3185
    unsigned num_rects;
3186
    AVSubtitleRect **rects;
3187
    int64_t pts;    ///< Same as packet pts, in AV_TIME_BASE
3188
} AVSubtitle;
3189

    
3190
/* packet functions */
3191

    
3192
/**
3193
 * @deprecated use NULL instead
3194
 */
3195
attribute_deprecated void av_destruct_packet_nofree(AVPacket *pkt);
3196

    
3197
/**
3198
 * Default packet destructor.
3199
 */
3200
void av_destruct_packet(AVPacket *pkt);
3201

    
3202
/**
3203
 * Initialize optional fields of a packet with default values.
3204
 *
3205
 * @param pkt packet
3206
 */
3207
void av_init_packet(AVPacket *pkt);
3208

    
3209
/**
3210
 * Allocate the payload of a packet and initialize its fields with
3211
 * default values.
3212
 *
3213
 * @param pkt packet
3214
 * @param size wanted payload size
3215
 * @return 0 if OK, AVERROR_xxx otherwise
3216
 */
3217
int av_new_packet(AVPacket *pkt, int size);
3218

    
3219
/**
3220
 * Reduce packet size, correctly zeroing padding
3221
 *
3222
 * @param pkt packet
3223
 * @param size new size
3224
 */
3225
void av_shrink_packet(AVPacket *pkt, int size);
3226

    
3227
/**
3228
 * Increase packet size, correctly zeroing padding
3229
 *
3230
 * @param pkt packet
3231
 * @param grow_by number of bytes by which to increase the size of the packet
3232
 */
3233
int av_grow_packet(AVPacket *pkt, int grow_by);
3234

    
3235
/**
3236
 * @warning This is a hack - the packet memory allocation stuff is broken. The
3237
 * packet is allocated if it was not really allocated.
3238
 */
3239
int av_dup_packet(AVPacket *pkt);
3240

    
3241
/**
3242
 * Free a packet.
3243
 *
3244
 * @param pkt packet to free
3245
 */
3246
void av_free_packet(AVPacket *pkt);
3247

    
3248
/* resample.c */
3249

    
3250
struct ReSampleContext;
3251
struct AVResampleContext;
3252

    
3253
typedef struct ReSampleContext ReSampleContext;
3254

    
3255
#if FF_API_AUDIO_OLD
3256
/**
3257
 * @deprecated Use av_audio_resample_init() instead.
3258
 */
3259
attribute_deprecated ReSampleContext *audio_resample_init(int output_channels, int input_channels,
3260
                                                          int output_rate, int input_rate);
3261
#endif
3262

    
3263
/**
3264
 *  Initialize audio resampling context.
3265
 *
3266
 * @param output_channels  number of output channels
3267
 * @param input_channels   number of input channels
3268
 * @param output_rate      output sample rate
3269
 * @param input_rate       input sample rate
3270
 * @param sample_fmt_out   requested output sample format
3271
 * @param sample_fmt_in    input sample format
3272
 * @param filter_length    length of each FIR filter in the filterbank relative to the cutoff frequency
3273
 * @param log2_phase_count log2 of the number of entries in the polyphase filterbank
3274
 * @param linear           if 1 then the used FIR filter will be linearly interpolated
3275
                           between the 2 closest, if 0 the closest will be used
3276
 * @param cutoff           cutoff frequency, 1.0 corresponds to half the output sampling rate
3277
 * @return allocated ReSampleContext, NULL if error occured
3278
 */
3279
ReSampleContext *av_audio_resample_init(int output_channels, int input_channels,
3280
                                        int output_rate, int input_rate,
3281
                                        enum AVSampleFormat sample_fmt_out,
3282
                                        enum AVSampleFormat sample_fmt_in,
3283
                                        int filter_length, int log2_phase_count,
3284
                                        int linear, double cutoff);
3285

    
3286
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
3287

    
3288
/**
3289
 * Free resample context.
3290
 *
3291
 * @param s a non-NULL pointer to a resample context previously
3292
 *          created with av_audio_resample_init()
3293
 */
3294
void audio_resample_close(ReSampleContext *s);
3295

    
3296

    
3297
/**
3298
 * Initialize an audio resampler.
3299
 * Note, if either rate is not an integer then simply scale both rates up so they are.
3300
 * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq
3301
 * @param log2_phase_count log2 of the number of entries in the polyphase filterbank
3302
 * @param linear If 1 then the used FIR filter will be linearly interpolated
3303
                 between the 2 closest, if 0 the closest will be used
3304
 * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate
3305
 */
3306
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
3307

    
3308
/**
3309
 * Resample an array of samples using a previously configured context.
3310
 * @param src an array of unconsumed samples
3311
 * @param consumed the number of samples of src which have been consumed are returned here
3312
 * @param src_size the number of unconsumed samples available
3313
 * @param dst_size the amount of space in samples available in dst
3314
 * @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.
3315
 * @return the number of samples written in dst or -1 if an error occurred
3316
 */
3317
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
3318

    
3319

    
3320
/**
3321
 * Compensate samplerate/timestamp drift. The compensation is done by changing
3322
 * the resampler parameters, so no audible clicks or similar distortions occur
3323
 * @param compensation_distance distance in output samples over which the compensation should be performed
3324
 * @param sample_delta number of output samples which should be output less
3325
 *
3326
 * example: av_resample_compensate(c, 10, 500)
3327
 * here instead of 510 samples only 500 samples would be output
3328
 *
3329
 * note, due to rounding the actual compensation might be slightly different,
3330
 * especially if the compensation_distance is large and the in_rate used during init is small
3331
 */
3332
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
3333
void av_resample_close(struct AVResampleContext *c);
3334

    
3335
/**
3336
 * Allocate memory for a picture.  Call avpicture_free to free it.
3337
 *
3338
 * @param picture the picture to be filled in
3339
 * @param pix_fmt the format of the picture
3340
 * @param width the width of the picture
3341
 * @param height the height of the picture
3342
 * @return zero if successful, a negative value if not
3343
 */
3344
int avpicture_alloc(AVPicture *picture, enum PixelFormat pix_fmt, int width, int height);
3345

    
3346
/**
3347
 * Free a picture previously allocated by avpicture_alloc().
3348
 *
3349
 * @param picture the AVPicture to be freed
3350
 */
3351
void avpicture_free(AVPicture *picture);
3352

    
3353
/**
3354
 * Fill in the AVPicture fields.
3355
 * The fields of the given AVPicture are filled in by using the 'ptr' address
3356
 * which points to the image data buffer. Depending on the specified picture
3357
 * format, one or multiple image data pointers and line sizes will be set.
3358
 * If a planar format is specified, several pointers will be set pointing to
3359
 * the different picture planes and the line sizes of the different planes
3360
 * will be stored in the lines_sizes array.
3361
 * Call with ptr == NULL to get the required size for the ptr buffer.
3362
 *
3363
 * @param picture AVPicture whose fields are to be filled in
3364
 * @param ptr Buffer which will contain or contains the actual image data
3365
 * @param pix_fmt The format in which the picture data is stored.
3366
 * @param width the width of the image in pixels
3367
 * @param height the height of the image in pixels
3368
 * @return size of the image data in bytes
3369
 */
3370
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
3371
                   enum PixelFormat pix_fmt, int width, int height);
3372
int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
3373
                     unsigned char *dest, int dest_size);
3374

    
3375
/**
3376
 * Calculate the size in bytes that a picture of the given width and height
3377
 * would occupy if stored in the given picture format.
3378
 * Note that this returns the size of a compact representation as generated
3379
 * by avpicture_layout, which can be smaller than the size required for e.g.
3380
 * avpicture_fill.
3381
 *
3382
 * @param pix_fmt the given picture format
3383
 * @param width the width of the image
3384
 * @param height the height of the image
3385
 * @return Image data size in bytes or -1 on error (e.g. too large dimensions).
3386
 */
3387
int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height);
3388
void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift);
3389
const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt);
3390
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
3391

    
3392
#if LIBAVCODEC_VERSION_MAJOR < 53
3393
/**
3394
 * Return the pixel format corresponding to the name name.
3395
 *
3396
 * If there is no pixel format with name name, then look for a
3397
 * pixel format with the name corresponding to the native endian
3398
 * format of name.
3399
 * For example in a little-endian system, first look for "gray16",
3400
 * then for "gray16le".
3401
 *
3402
 * Finally if no pixel format has been found, return PIX_FMT_NONE.
3403
 *
3404
 * @deprecated Deprecated in favor of av_get_pix_fmt().
3405
 */
3406
attribute_deprecated enum PixelFormat avcodec_get_pix_fmt(const char* name);
3407
#endif
3408

    
3409
/**
3410
 * Return a value representing the fourCC code associated to the
3411
 * pixel format pix_fmt, or 0 if no associated fourCC code can be
3412
 * found.
3413
 */
3414
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat pix_fmt);
3415

    
3416
/**
3417
 * Put a string representing the codec tag codec_tag in buf.
3418
 *
3419
 * @param buf_size size in bytes of buf
3420
 * @return the length of the string that would have been generated if
3421
 * enough space had been available, excluding the trailing null
3422
 */
3423
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag);
3424

    
3425
#define FF_LOSS_RESOLUTION  0x0001 /**< loss due to resolution change */
3426
#define FF_LOSS_DEPTH       0x0002 /**< loss due to color depth change */
3427
#define FF_LOSS_COLORSPACE  0x0004 /**< loss due to color space conversion */
3428
#define FF_LOSS_ALPHA       0x0008 /**< loss of alpha bits */
3429
#define FF_LOSS_COLORQUANT  0x0010 /**< loss due to color quantization */
3430
#define FF_LOSS_CHROMA      0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */
3431

    
3432
/**
3433
 * Compute what kind of losses will occur when converting from one specific
3434
 * pixel format to another.
3435
 * When converting from one pixel format to another, information loss may occur.
3436
 * For example, when converting from RGB24 to GRAY, the color information will
3437
 * be lost. Similarly, other losses occur when converting from some formats to
3438
 * other formats. These losses can involve loss of chroma, but also loss of
3439
 * resolution, loss of color depth, loss due to the color space conversion, loss
3440
 * of the alpha bits or loss due to color quantization.
3441
 * avcodec_get_fix_fmt_loss() informs you about the various types of losses
3442
 * which will occur when converting from one pixel format to another.
3443
 *
3444
 * @param[in] dst_pix_fmt destination pixel format
3445
 * @param[in] src_pix_fmt source pixel format
3446
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
3447
 * @return Combination of flags informing you what kind of losses will occur.
3448
 */
3449
int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
3450
                             int has_alpha);
3451

    
3452
/**
3453
 * Find the best pixel format to convert to given a certain source pixel
3454
 * format.  When converting from one pixel format to another, information loss
3455
 * may occur.  For example, when converting from RGB24 to GRAY, the color
3456
 * information will be lost. Similarly, other losses occur when converting from
3457
 * some formats to other formats. avcodec_find_best_pix_fmt() searches which of
3458
 * the given pixel formats should be used to suffer the least amount of loss.
3459
 * The pixel formats from which it chooses one, are determined by the
3460
 * pix_fmt_mask parameter.
3461
 *
3462
 * @code
3463
 * src_pix_fmt = PIX_FMT_YUV420P;
3464
 * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24);
3465
 * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss);
3466
 * @endcode
3467
 *
3468
 * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from
3469
 * @param[in] src_pix_fmt source pixel format
3470
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
3471
 * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
3472
 * @return The best pixel format to convert to or -1 if none was found.
3473
 */
3474
enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
3475
                              int has_alpha, int *loss_ptr);
3476

    
3477
#if LIBAVCODEC_VERSION_MAJOR < 53
3478
/**
3479
 * @deprecated Use av_get_pix_fmt_string() instead.
3480
 */
3481
attribute_deprecated
3482
void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt);
3483
#endif
3484

    
3485
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
3486
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
3487

    
3488
/**
3489
 * Tell if an image really has transparent alpha values.
3490
 * @return ored mask of FF_ALPHA_xxx constants
3491
 */
3492
int img_get_alpha_info(const AVPicture *src,
3493
                       enum PixelFormat pix_fmt, int width, int height);
3494

    
3495
/* deinterlace a picture */
3496
/* deinterlace - if not supported return -1 */
3497
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
3498
                          enum PixelFormat pix_fmt, int width, int height);
3499

    
3500
/* external high level API */
3501

    
3502
/**
3503
 * If c is NULL, returns the first registered codec,
3504
 * if c is non-NULL, returns the next registered codec after c,
3505
 * or NULL if c is the last one.
3506
 */
3507
AVCodec *av_codec_next(AVCodec *c);
3508

    
3509
/**
3510
 * Return the LIBAVCODEC_VERSION_INT constant.
3511
 */
3512
unsigned avcodec_version(void);
3513

    
3514
/**
3515
 * Return the libavcodec build-time configuration.
3516
 */
3517
const char *avcodec_configuration(void);
3518

    
3519
/**
3520
 * Return the libavcodec license.
3521
 */
3522
const char *avcodec_license(void);
3523

    
3524
/**
3525
 * Initialize libavcodec.
3526
 *
3527
 * @warning This function must be called before any other libavcodec
3528
 * function.
3529
 */
3530
void avcodec_init(void);
3531

    
3532
#if LIBAVCODEC_VERSION_MAJOR < 53
3533
/**
3534
 * @deprecated Deprecated in favor of avcodec_register().
3535
 */
3536
attribute_deprecated void register_avcodec(AVCodec *codec);
3537
#endif
3538

    
3539
/**
3540
 * Register the codec codec and initialize libavcodec.
3541
 *
3542
 * @see avcodec_init()
3543
 */
3544
void avcodec_register(AVCodec *codec);
3545

    
3546
/**
3547
 * Find a registered encoder with a matching codec ID.
3548
 *
3549
 * @param id CodecID of the requested encoder
3550
 * @return An encoder if one was found, NULL otherwise.
3551
 */
3552
AVCodec *avcodec_find_encoder(enum CodecID id);
3553

    
3554
/**
3555
 * Find a registered encoder with the specified name.
3556
 *
3557
 * @param name name of the requested encoder
3558
 * @return An encoder if one was found, NULL otherwise.
3559
 */
3560
AVCodec *avcodec_find_encoder_by_name(const char *name);
3561

    
3562
/**
3563
 * Find a registered decoder with a matching codec ID.
3564
 *
3565
 * @param id CodecID of the requested decoder
3566
 * @return A decoder if one was found, NULL otherwise.
3567
 */
3568
AVCodec *avcodec_find_decoder(enum CodecID id);
3569

    
3570
/**
3571
 * Find a registered decoder with the specified name.
3572
 *
3573
 * @param name name of the requested decoder
3574
 * @return A decoder if one was found, NULL otherwise.
3575
 */
3576
AVCodec *avcodec_find_decoder_by_name(const char *name);
3577
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
3578

    
3579
/**
3580
 * Return a name for the specified profile, if available.
3581
 *
3582
 * @param codec the codec that is searched for the given profile
3583
 * @param profile the profile value for which a name is requested
3584
 * @return A name for the profile if found, NULL otherwise.
3585
 */
3586
const char *av_get_profile_name(const AVCodec *codec, int profile);
3587

    
3588
/**
3589
 * Set the fields of the given AVCodecContext to default values.
3590
 *
3591
 * @param s The AVCodecContext of which the fields should be set to default values.
3592
 */
3593
void avcodec_get_context_defaults(AVCodecContext *s);
3594

    
3595
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
3596
 *  we WILL change its arguments and name a few times! */
3597
void avcodec_get_context_defaults2(AVCodecContext *s, enum AVMediaType);
3598

    
3599
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
3600
 *  we WILL change its arguments and name a few times! */
3601
int avcodec_get_context_defaults3(AVCodecContext *s, AVCodec *codec);
3602

    
3603
/**
3604
 * Allocate an AVCodecContext and set its fields to default values.  The
3605
 * resulting struct can be deallocated by simply calling av_free().
3606
 *
3607
 * @return An AVCodecContext filled with default values or NULL on failure.
3608
 * @see avcodec_get_context_defaults
3609
 */
3610
AVCodecContext *avcodec_alloc_context(void);
3611

    
3612
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
3613
 *  we WILL change its arguments and name a few times! */
3614
AVCodecContext *avcodec_alloc_context2(enum AVMediaType);
3615

    
3616
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
3617
 *  we WILL change its arguments and name a few times! */
3618
AVCodecContext *avcodec_alloc_context3(AVCodec *codec);
3619

    
3620
/**
3621
 * Copy the settings of the source AVCodecContext into the destination
3622
 * AVCodecContext. The resulting destination codec context will be
3623
 * unopened, i.e. you are required to call avcodec_open() before you
3624
 * can use this AVCodecContext to decode/encode video/audio data.
3625
 *
3626
 * @param dest target codec context, should be initialized with
3627
 *             avcodec_alloc_context(), but otherwise uninitialized
3628
 * @param src source codec context
3629
 * @return AVERROR() on error (e.g. memory allocation error), 0 on success
3630
 */
3631
int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src);
3632

    
3633
/**
3634
 * Set the fields of the given AVFrame to default values.
3635
 *
3636
 * @param pic The AVFrame of which the fields should be set to default values.
3637
 */
3638
void avcodec_get_frame_defaults(AVFrame *pic);
3639

    
3640
/**
3641
 * Allocate an AVFrame and set its fields to default values.  The resulting
3642
 * struct can be deallocated by simply calling av_free().
3643
 *
3644
 * @return An AVFrame filled with default values or NULL on failure.
3645
 * @see avcodec_get_frame_defaults
3646
 */
3647
AVFrame *avcodec_alloc_frame(void);
3648

    
3649
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
3650
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
3651
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
3652

    
3653
/**
3654
 * Return the amount of padding in pixels which the get_buffer callback must
3655
 * provide around the edge of the image for codecs which do not have the
3656
 * CODEC_FLAG_EMU_EDGE flag.
3657
 *
3658
 * @return Required padding in pixels.
3659
 */
3660
unsigned avcodec_get_edge_width(void);
3661
/**
3662
 * Modify width and height values so that they will result in a memory
3663
 * buffer that is acceptable for the codec if you do not use any horizontal
3664
 * padding.
3665
 *
3666
 * May only be used if a codec with CODEC_CAP_DR1 has been opened.
3667
 * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased
3668
 * according to avcodec_get_edge_width() before.
3669
 */
3670
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
3671
/**
3672
 * Modify width and height values so that they will result in a memory
3673
 * buffer that is acceptable for the codec if you also ensure that all
3674
 * line sizes are a multiple of the respective linesize_align[i].
3675
 *
3676
 * May only be used if a codec with CODEC_CAP_DR1 has been opened.
3677
 * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased
3678
 * according to avcodec_get_edge_width() before.
3679
 */
3680
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
3681
                               int linesize_align[4]);
3682

    
3683
#if LIBAVCODEC_VERSION_MAJOR < 53
3684
/**
3685
 * @deprecated Deprecated in favor of av_check_image_size().
3686
 */
3687
attribute_deprecated
3688
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
3689
#endif
3690

    
3691
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
3692

    
3693
#if LIBAVCODEC_VERSION_MAJOR < 53
3694
/**
3695
 * @deprecated Set s->thread_count before calling avcodec_open() instead of calling this.
3696
 */
3697
attribute_deprecated
3698
int avcodec_thread_init(AVCodecContext *s, int thread_count);
3699
void avcodec_thread_free(AVCodecContext *s);
3700
#endif
3701
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size);
3702
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int, int),void *arg, int *ret, int count);
3703
//FIXME func typedef
3704

    
3705
/**
3706
 * Initialize the AVCodecContext to use the given AVCodec. Prior to using this
3707
 * function the context has to be allocated.
3708
 *
3709
 * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
3710
 * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
3711
 * retrieving a codec.
3712
 *
3713
 * @warning This function is not thread safe!
3714
 *
3715
 * @code
3716
 * avcodec_register_all();
3717
 * codec = avcodec_find_decoder(CODEC_ID_H264);
3718
 * if (!codec)
3719
 *     exit(1);
3720
 *
3721
 * context = avcodec_alloc_context();
3722
 *
3723
 * if (avcodec_open(context, codec) < 0)
3724
 *     exit(1);
3725
 * @endcode
3726
 *
3727
 * @param avctx The context which will be set up to use the given codec.
3728
 * @param codec The codec to use within the context.
3729
 * @return zero on success, a negative value on error
3730
 * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder
3731
 */
3732
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
3733

    
3734
#if FF_API_AUDIO_OLD
3735
/**
3736
 * Decode an audio frame from buf into samples.
3737
 * Wrapper function which calls avcodec_decode_audio3.
3738
 *
3739
 * @deprecated Use avcodec_decode_audio3 instead.
3740
 * @param avctx the codec context
3741
 * @param[out] samples the output buffer
3742
 * @param[in,out] frame_size_ptr the output buffer size in bytes
3743
 * @param[in] buf the input buffer
3744
 * @param[in] buf_size the input buffer size in bytes
3745
 * @return On error a negative value is returned, otherwise the number of bytes
3746
 * used or zero if no frame could be decompressed.
3747
 */
3748
attribute_deprecated int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
3749
                         int *frame_size_ptr,
3750
                         const uint8_t *buf, int buf_size);
3751
#endif
3752

    
3753
/**
3754
 * Decode the audio frame of size avpkt->size from avpkt->data into samples.
3755
 * Some decoders may support multiple frames in a single AVPacket, such
3756
 * decoders would then just decode the first frame. In this case,
3757
 * avcodec_decode_audio3 has to be called again with an AVPacket that contains
3758
 * the remaining data in order to decode the second frame etc.
3759
 * If no frame
3760
 * could be outputted, frame_size_ptr is zero. Otherwise, it is the
3761
 * decompressed frame size in bytes.
3762
 *
3763
 * @warning You must set frame_size_ptr to the allocated size of the
3764
 * output buffer before calling avcodec_decode_audio3().
3765
 *
3766
 * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than
3767
 * the actual read bytes because some optimized bitstream readers read 32 or 64
3768
 * bits at once and could read over the end.
3769
 *
3770
 * @warning The end of the input buffer avpkt->data should be set to 0 to ensure that
3771
 * no overreading happens for damaged MPEG streams.
3772
 *
3773
 * @note You might have to align the input buffer avpkt->data and output buffer
3774
 * samples. The alignment requirements depend on the CPU: On some CPUs it isn't
3775
 * necessary at all, on others it won't work at all if not aligned and on others
3776
 * it will work but it will have an impact on performance.
3777
 *
3778
 * In practice, avpkt->data should have 4 byte alignment at minimum and
3779
 * samples should be 16 byte aligned unless the CPU doesn't need it
3780
 * (AltiVec and SSE do).
3781
 *
3782
 * @param avctx the codec context
3783
 * @param[out] samples the output buffer, sample type in avctx->sample_fmt
3784
 * @param[in,out] frame_size_ptr the output buffer size in bytes
3785
 * @param[in] avpkt The input AVPacket containing the input buffer.
3786
 *            You can create such packet with av_init_packet() and by then setting
3787
 *            data and size, some decoders might in addition need other fields.
3788
 *            All decoders are designed to use the least fields possible though.
3789
 * @return On error a negative value is returned, otherwise the number of bytes
3790
 * used or zero if no frame data was decompressed (used) from the input AVPacket.
3791
 */
3792
int avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
3793
                         int *frame_size_ptr,
3794
                         AVPacket *avpkt);
3795

    
3796
#if FF_API_VIDEO_OLD
3797
/**
3798
 * Decode a video frame from buf into picture.
3799
 * Wrapper function which calls avcodec_decode_video2.
3800
 *
3801
 * @deprecated Use avcodec_decode_video2 instead.
3802
 * @param avctx the codec context
3803
 * @param[out] picture The AVFrame in which the decoded video frame will be stored.
3804
 * @param[in] buf the input buffer
3805
 * @param[in] buf_size the size of the input buffer in bytes
3806
 * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
3807
 * @return On error a negative value is returned, otherwise the number of bytes
3808
 * used or zero if no frame could be decompressed.
3809
 */
3810
attribute_deprecated int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
3811
                         int *got_picture_ptr,
3812
                         const uint8_t *buf, int buf_size);
3813
#endif
3814

    
3815
/**
3816
 * Decode the video frame of size avpkt->size from avpkt->data into picture.
3817
 * Some decoders may support multiple frames in a single AVPacket, such
3818
 * decoders would then just decode the first frame.
3819
 *
3820
 * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than
3821
 * the actual read bytes because some optimized bitstream readers read 32 or 64
3822
 * bits at once and could read over the end.
3823
 *
3824
 * @warning The end of the input buffer buf should be set to 0 to ensure that
3825
 * no overreading happens for damaged MPEG streams.
3826
 *
3827
 * @note You might have to align the input buffer avpkt->data.
3828
 * The alignment requirements depend on the CPU: on some CPUs it isn't
3829
 * necessary at all, on others it won't work at all if not aligned and on others
3830
 * it will work but it will have an impact on performance.
3831
 *
3832
 * In practice, avpkt->data should have 4 byte alignment at minimum.
3833
 *
3834
 * @note Some codecs have a delay between input and output, these need to be
3835
 * fed with avpkt->data=NULL, avpkt->size=0 at the end to return the remaining frames.
3836
 *
3837
 * @param avctx the codec context
3838
 * @param[out] picture The AVFrame in which the decoded video frame will be stored.
3839
 *             Use avcodec_alloc_frame to get an AVFrame, the codec will
3840
 *             allocate memory for the actual bitmap.
3841
 *             with default get/release_buffer(), the decoder frees/reuses the bitmap as it sees fit.
3842
 *             with overridden get/release_buffer() (needs CODEC_CAP_DR1) the user decides into what buffer the decoder
3843
 *                   decodes and the decoder tells the user once it does not need the data anymore,
3844
 *                   the user app can at this point free/reuse/keep the memory as it sees fit.
3845
 *
3846
 * @param[in] avpkt The input AVpacket containing the input buffer.
3847
 *            You can create such packet with av_init_packet() and by then setting
3848
 *            data and size, some decoders might in addition need other fields like
3849
 *            flags&AV_PKT_FLAG_KEY. All decoders are designed to use the least
3850
 *            fields possible.
3851
 * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
3852
 * @return On error a negative value is returned, otherwise the number of bytes
3853
 * used or zero if no frame could be decompressed.
3854
 */
3855
int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
3856
                         int *got_picture_ptr,
3857
                         AVPacket *avpkt);
3858

    
3859
#if FF_API_SUBTITLE_OLD
3860
/* Decode a subtitle message. Return -1 if error, otherwise return the
3861
 * number of bytes used. If no subtitle could be decompressed,
3862
 * got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
3863
attribute_deprecated int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
3864
                            int *got_sub_ptr,
3865
                            const uint8_t *buf, int buf_size);
3866
#endif
3867

    
3868
/**
3869
 * Decode a subtitle message.
3870
 * Return a negative value on error, otherwise return the number of bytes used.
3871
 * If no subtitle could be decompressed, got_sub_ptr is zero.
3872
 * Otherwise, the subtitle is stored in *sub.
3873
 * Note that CODEC_CAP_DR1 is not available for subtitle codecs. This is for
3874
 * simplicity, because the performance difference is expect to be negligible
3875
 * and reusing a get_buffer written for video codecs would probably perform badly
3876
 * due to a potentially very different allocation pattern.
3877
 *
3878
 * @param avctx the codec context
3879
 * @param[out] sub The AVSubtitle in which the decoded subtitle will be stored, must be
3880
                   freed with avsubtitle_free if *got_sub_ptr is set.
3881
 * @param[in,out] got_sub_ptr Zero if no subtitle could be decompressed, otherwise, it is nonzero.
3882
 * @param[in] avpkt The input AVPacket containing the input buffer.
3883
 */
3884
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
3885
                            int *got_sub_ptr,
3886
                            AVPacket *avpkt);
3887

    
3888
/**
3889
 * Frees all allocated data in the given subtitle struct.
3890
 *
3891
 * @param sub AVSubtitle to free.
3892
 */
3893
void avsubtitle_free(AVSubtitle *sub);
3894

    
3895
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
3896
                        int *data_size_ptr,
3897
                        uint8_t *buf, int buf_size);
3898

    
3899
/**
3900
 * Encode an audio frame from samples into buf.
3901
 *
3902
 * @note The output buffer should be at least FF_MIN_BUFFER_SIZE bytes large.
3903
 * However, for PCM audio the user will know how much space is needed
3904
 * because it depends on the value passed in buf_size as described
3905
 * below. In that case a lower value can be used.
3906
 *
3907
 * @param avctx the codec context
3908
 * @param[out] buf the output buffer
3909
 * @param[in] buf_size the output buffer size
3910
 * @param[in] samples the input buffer containing the samples
3911
 * The number of samples read from this buffer is frame_size*channels,
3912
 * both of which are defined in avctx.
3913
 * For PCM audio the number of samples read from samples is equal to
3914
 * buf_size * input_sample_size / output_sample_size.
3915
 * @return On error a negative value is returned, on success zero or the number
3916
 * of bytes used to encode the data read from the input buffer.
3917
 */
3918
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
3919
                         const short *samples);
3920

    
3921
/**
3922
 * Encode a video frame from pict into buf.
3923
 * The input picture should be
3924
 * stored using a specific format, namely avctx.pix_fmt.
3925
 *
3926
 * @param avctx the codec context
3927
 * @param[out] buf the output buffer for the bitstream of encoded frame
3928
 * @param[in] buf_size the size of the output buffer in bytes
3929
 * @param[in] pict the input picture to encode
3930
 * @return On error a negative value is returned, on success zero or the number
3931
 * of bytes used from the output buffer.
3932
 */
3933
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
3934
                         const AVFrame *pict);
3935
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
3936
                            const AVSubtitle *sub);
3937

    
3938
int avcodec_close(AVCodecContext *avctx);
3939

    
3940
/**
3941
 * Register all the codecs, parsers and bitstream filters which were enabled at
3942
 * configuration time. If you do not call this function you can select exactly
3943
 * which formats you want to support, by using the individual registration
3944
 * functions.
3945
 *
3946
 * @see avcodec_register
3947
 * @see av_register_codec_parser
3948
 * @see av_register_bitstream_filter
3949
 */
3950
void avcodec_register_all(void);
3951

    
3952
/**
3953
 * Flush buffers, should be called when seeking or when switching to a different stream.
3954
 */
3955
void avcodec_flush_buffers(AVCodecContext *avctx);
3956

    
3957
void avcodec_default_free_buffers(AVCodecContext *s);
3958

    
3959
/* misc useful functions */
3960

    
3961
/**
3962
 * Return a single letter to describe the given picture type pict_type.
3963
 *
3964
 * @param[in] pict_type the picture type
3965
 * @return A single character representing the picture type.
3966
 */
3967
char av_get_pict_type_char(int pict_type);
3968

    
3969
/**
3970
 * Return codec bits per sample.
3971
 *
3972
 * @param[in] codec_id the codec
3973
 * @return Number of bits per sample or zero if unknown for the given codec.
3974
 */
3975
int av_get_bits_per_sample(enum CodecID codec_id);
3976

    
3977
#if FF_API_OLD_SAMPLE_FMT
3978
/**
3979
 * @deprecated Use av_get_bits_per_sample_fmt() instead.
3980
 */
3981
attribute_deprecated
3982
int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt);
3983
#endif
3984

    
3985
/* frame parsing */
3986
typedef struct AVCodecParserContext {
3987
    void *priv_data;
3988
    struct AVCodecParser *parser;
3989
    int64_t frame_offset; /* offset of the current frame */
3990
    int64_t cur_offset; /* current offset
3991
                           (incremented by each av_parser_parse()) */
3992
    int64_t next_frame_offset; /* offset of the next frame */
3993
    /* video info */
3994
    int pict_type; /* XXX: Put it back in AVCodecContext. */
3995
    /**
3996
     * This field is used for proper frame duration computation in lavf.
3997
     * It signals, how much longer the frame duration of the current frame
3998
     * is compared to normal frame duration.
3999
     *
4000
     * frame_duration = (1 + repeat_pict) * time_base
4001
     *
4002
     * It is used by codecs like H.264 to display telecined material.
4003
     */
4004
    int repeat_pict; /* XXX: Put it back in AVCodecContext. */
4005
    int64_t pts;     /* pts of the current frame */
4006
    int64_t dts;     /* dts of the current frame */
4007

    
4008
    /* private data */
4009
    int64_t last_pts;
4010
    int64_t last_dts;
4011
    int fetch_timestamp;
4012

    
4013
#define AV_PARSER_PTS_NB 4
4014
    int cur_frame_start_index;
4015
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
4016
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
4017
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
4018

    
4019
    int flags;
4020
#define PARSER_FLAG_COMPLETE_FRAMES           0x0001
4021
#define PARSER_FLAG_ONCE                      0x0002
4022
/// Set if the parser has a valid file offset
4023
#define PARSER_FLAG_FETCHED_OFFSET            0x0004
4024

    
4025
    int64_t offset;      ///< byte offset from starting packet start
4026
    int64_t cur_frame_end[AV_PARSER_PTS_NB];
4027

    
4028
    /*!
4029
     * Set by parser to 1 for key frames and 0 for non-key frames.
4030
     * It is initialized to -1, so if the parser doesn't set this flag,
4031
     * old-style fallback using FF_I_TYPE picture type as key frames
4032
     * will be used.
4033
     */
4034
    int key_frame;
4035

    
4036
    /**
4037
     * Time difference in stream time base units from the pts of this
4038
     * packet to the point at which the output from the decoder has converged
4039
     * independent from the availability of previous frames. That is, the
4040
     * frames are virtually identical no matter if decoding started from
4041
     * the very first frame or from this keyframe.
4042
     * Is AV_NOPTS_VALUE if unknown.
4043
     * This field is not the display duration of the current frame.
4044
     * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY
4045
     * set.
4046
     *
4047
     * The purpose of this field is to allow seeking in streams that have no
4048
     * keyframes in the conventional sense. It corresponds to the
4049
     * recovery point SEI in H.264 and match_time_delta in NUT. It is also
4050
     * essential for some types of subtitle streams to ensure that all
4051
     * subtitles are correctly displayed after seeking.
4052
     */
4053
    int64_t convergence_duration;
4054

    
4055
    // Timestamp generation support:
4056
    /**
4057
     * Synchronization point for start of timestamp generation.
4058
     *
4059
     * Set to >0 for sync point, 0 for no sync point and <0 for undefined
4060
     * (default).
4061
     *
4062
     * For example, this corresponds to presence of H.264 buffering period
4063
     * SEI message.
4064
     */
4065
    int dts_sync_point;
4066

    
4067
    /**
4068
     * Offset of the current timestamp against last timestamp sync point in
4069
     * units of AVCodecContext.time_base.
4070
     *
4071
     * Set to INT_MIN when dts_sync_point unused. Otherwise, it must
4072
     * contain a valid timestamp offset.
4073
     *
4074
     * Note that the timestamp of sync point has usually a nonzero
4075
     * dts_ref_dts_delta, which refers to the previous sync point. Offset of
4076
     * the next frame after timestamp sync point will be usually 1.
4077
     *
4078
     * For example, this corresponds to H.264 cpb_removal_delay.
4079
     */
4080
    int dts_ref_dts_delta;
4081

    
4082
    /**
4083
     * Presentation delay of current frame in units of AVCodecContext.time_base.
4084
     *
4085
     * Set to INT_MIN when dts_sync_point unused. Otherwise, it must
4086
     * contain valid non-negative timestamp delta (presentation time of a frame
4087
     * must not lie in the past).
4088
     *
4089
     * This delay represents the difference between decoding and presentation
4090
     * time of the frame.
4091
     *
4092
     * For example, this corresponds to H.264 dpb_output_delay.
4093
     */
4094
    int pts_dts_delta;
4095

    
4096
    /**
4097
     * Position of the packet in file.
4098
     *
4099
     * Analogous to cur_frame_pts/dts
4100
     */
4101
    int64_t cur_frame_pos[AV_PARSER_PTS_NB];
4102

    
4103
    /**
4104
     * Byte position of currently parsed frame in stream.
4105
     */
4106
    int64_t pos;
4107

    
4108
    /**
4109
     * Previous frame byte position.
4110
     */
4111
    int64_t last_pos;
4112
} AVCodecParserContext;
4113

    
4114
typedef struct AVCodecParser {
4115
    int codec_ids[5]; /* several codec IDs are permitted */
4116
    int priv_data_size;
4117
    int (*parser_init)(AVCodecParserContext *s);
4118
    int (*parser_parse)(AVCodecParserContext *s,
4119
                        AVCodecContext *avctx,
4120
                        const uint8_t **poutbuf, int *poutbuf_size,
4121
                        const uint8_t *buf, int buf_size);
4122
    void (*parser_close)(AVCodecParserContext *s);
4123
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
4124
    struct AVCodecParser *next;
4125
} AVCodecParser;
4126

    
4127
AVCodecParser *av_parser_next(AVCodecParser *c);
4128

    
4129
void av_register_codec_parser(AVCodecParser *parser);
4130
AVCodecParserContext *av_parser_init(int codec_id);
4131

    
4132
#if LIBAVCODEC_VERSION_MAJOR < 53
4133
attribute_deprecated
4134
int av_parser_parse(AVCodecParserContext *s,
4135
                    AVCodecContext *avctx,
4136
                    uint8_t **poutbuf, int *poutbuf_size,
4137
                    const uint8_t *buf, int buf_size,
4138
                    int64_t pts, int64_t dts);
4139
#endif
4140

    
4141
/**
4142
 * Parse a packet.
4143
 *
4144
 * @param s             parser context.
4145
 * @param avctx         codec context.
4146
 * @param poutbuf       set to pointer to parsed buffer or NULL if not yet finished.
4147
 * @param poutbuf_size  set to size of parsed buffer or zero if not yet finished.
4148
 * @param buf           input buffer.
4149
 * @param buf_size      input length, to signal EOF, this should be 0 (so that the last frame can be output).
4150
 * @param pts           input presentation timestamp.
4151
 * @param dts           input decoding timestamp.
4152
 * @param pos           input byte position in stream.
4153
 * @return the number of bytes of the input bitstream used.
4154
 *
4155
 * Example:
4156
 * @code
4157
 *   while(in_len){
4158
 *       len = av_parser_parse2(myparser, AVCodecContext, &data, &size,
4159
 *                                        in_data, in_len,
4160
 *                                        pts, dts, pos);
4161
 *       in_data += len;
4162
 *       in_len  -= len;
4163
 *
4164
 *       if(size)
4165
 *          decode_frame(data, size);
4166
 *   }
4167
 * @endcode
4168
 */
4169
int av_parser_parse2(AVCodecParserContext *s,
4170
                     AVCodecContext *avctx,
4171
                     uint8_t **poutbuf, int *poutbuf_size,
4172
                     const uint8_t *buf, int buf_size,
4173
                     int64_t pts, int64_t dts,
4174
                     int64_t pos);
4175

    
4176
int av_parser_change(AVCodecParserContext *s,
4177
                     AVCodecContext *avctx,
4178
                     uint8_t **poutbuf, int *poutbuf_size,
4179
                     const uint8_t *buf, int buf_size, int keyframe);
4180
void av_parser_close(AVCodecParserContext *s);
4181

    
4182

    
4183
typedef struct AVBitStreamFilterContext {
4184
    void *priv_data;
4185
    struct AVBitStreamFilter *filter;
4186
    AVCodecParserContext *parser;
4187
    struct AVBitStreamFilterContext *next;
4188
} AVBitStreamFilterContext;
4189

    
4190

    
4191
typedef struct AVBitStreamFilter {
4192
    const char *name;
4193
    int priv_data_size;
4194
    int (*filter)(AVBitStreamFilterContext *bsfc,
4195
                  AVCodecContext *avctx, const char *args,
4196
                  uint8_t **poutbuf, int *poutbuf_size,
4197
                  const uint8_t *buf, int buf_size, int keyframe);
4198
    void (*close)(AVBitStreamFilterContext *bsfc);
4199
    struct AVBitStreamFilter *next;
4200
} AVBitStreamFilter;
4201

    
4202
void av_register_bitstream_filter(AVBitStreamFilter *bsf);
4203
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
4204
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
4205
                               AVCodecContext *avctx, const char *args,
4206
                               uint8_t **poutbuf, int *poutbuf_size,
4207
                               const uint8_t *buf, int buf_size, int keyframe);
4208
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
4209

    
4210
AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f);
4211

    
4212
/* memory */
4213

    
4214
/**
4215
 * Reallocate the given block if it is not large enough, otherwise do nothing.
4216
 *
4217
 * @see av_realloc
4218
 */
4219
void *av_fast_realloc(void *ptr, unsigned int *size, FF_INTERNALC_MEM_TYPE min_size);
4220

    
4221
/**
4222
 * Allocate a buffer, reusing the given one if large enough.
4223
 *
4224
 * Contrary to av_fast_realloc the current buffer contents might not be
4225
 * preserved and on error the old buffer is freed, thus no special
4226
 * handling to avoid memleaks is necessary.
4227
 *
4228
 * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer
4229
 * @param size size of the buffer *ptr points to
4230
 * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and
4231
 *                 *size 0 if an error occurred.
4232
 */
4233
void av_fast_malloc(void *ptr, unsigned int *size, FF_INTERNALC_MEM_TYPE min_size);
4234

    
4235
#if LIBAVCODEC_VERSION_MAJOR < 53
4236
/**
4237
 * @deprecated Deprecated in favor of av_image_copy().
4238
 */
4239
attribute_deprecated
4240
void av_picture_data_copy(uint8_t *dst_data[4], int dst_linesize[4],
4241
                          uint8_t *src_data[4], int src_linesize[4],
4242
                          enum PixelFormat pix_fmt, int width, int height);
4243
#endif
4244

    
4245
/**
4246
 * Copy image src to dst. Wraps av_picture_data_copy() above.
4247
 */
4248
void av_picture_copy(AVPicture *dst, const AVPicture *src,
4249
                     enum PixelFormat pix_fmt, int width, int height);
4250

    
4251
/**
4252
 * Crop image top and left side.
4253
 */
4254
int av_picture_crop(AVPicture *dst, const AVPicture *src,
4255
                    enum PixelFormat pix_fmt, int top_band, int left_band);
4256

    
4257
/**
4258
 * Pad image.
4259
 */
4260
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, enum PixelFormat pix_fmt,
4261
            int padtop, int padbottom, int padleft, int padright, int *color);
4262

    
4263
/**
4264
 * Encode extradata length to a buffer. Used by xiph codecs.
4265
 *
4266
 * @param s buffer to write to; must be at least (v/255+1) bytes long
4267
 * @param v size of extradata in bytes
4268
 * @return number of bytes written to the buffer.
4269
 */
4270
unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
4271

    
4272
#if LIBAVCODEC_VERSION_MAJOR < 53
4273
/**
4274
 * Parse str and put in width_ptr and height_ptr the detected values.
4275
 *
4276
 * @deprecated Deprecated in favor of av_parse_video_size().
4277
 */
4278
attribute_deprecated int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str);
4279

    
4280
/**
4281
 * Parse str and store the detected values in *frame_rate.
4282
 *
4283
 * @deprecated Deprecated in favor of av_parse_video_rate().
4284
 */
4285
attribute_deprecated int av_parse_video_frame_rate(AVRational *frame_rate, const char *str);
4286
#endif
4287

    
4288
/**
4289
 * Logs a generic warning message about a missing feature. This function is
4290
 * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.)
4291
 * only, and would normally not be used by applications.
4292
 * @param[in] avc a pointer to an arbitrary struct of which the first field is
4293
 * a pointer to an AVClass struct
4294
 * @param[in] feature string containing the name of the missing feature
4295
 * @param[in] want_sample indicates if samples are wanted which exhibit this feature.
4296
 * If want_sample is non-zero, additional verbage will be added to the log
4297
 * message which tells the user how to report samples to the development
4298
 * mailing list.
4299
 */
4300
void av_log_missing_feature(void *avc, const char *feature, int want_sample);
4301

    
4302
/**
4303
 * Log a generic warning message asking for a sample. This function is
4304
 * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.)
4305
 * only, and would normally not be used by applications.
4306
 * @param[in] avc a pointer to an arbitrary struct of which the first field is
4307
 * a pointer to an AVClass struct
4308
 * @param[in] msg string containing an optional message, or NULL if no message
4309
 */
4310
void av_log_ask_for_sample(void *avc, const char *msg);
4311

    
4312
/**
4313
 * Register the hardware accelerator hwaccel.
4314
 */
4315
void av_register_hwaccel(AVHWAccel *hwaccel);
4316

    
4317
/**
4318
 * If hwaccel is NULL, returns the first registered hardware accelerator,
4319
 * if hwaccel is non-NULL, returns the next registered hardware accelerator
4320
 * after hwaccel, or NULL if hwaccel is the last one.
4321
 */
4322
AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel);
4323

    
4324

    
4325
/**
4326
 * Lock operation used by lockmgr
4327
 */
4328
enum AVLockOp {
4329
  AV_LOCK_CREATE,  ///< Create a mutex
4330
  AV_LOCK_OBTAIN,  ///< Lock the mutex
4331
  AV_LOCK_RELEASE, ///< Unlock the mutex
4332
  AV_LOCK_DESTROY, ///< Free mutex resources
4333
};
4334

    
4335
/**
4336
 * Register a user provided lock manager supporting the operations
4337
 * specified by AVLockOp. mutex points to a (void *) where the
4338
 * lockmgr should store/get a pointer to a user allocated mutex. It's
4339
 * NULL upon AV_LOCK_CREATE and != NULL for all other ops.
4340
 *
4341
 * @param cb User defined callback. Note: FFmpeg may invoke calls to this
4342
 *           callback during the call to av_lockmgr_register().
4343
 *           Thus, the application must be prepared to handle that.
4344
 *           If cb is set to NULL the lockmgr will be unregistered.
4345
 *           Also note that during unregistration the previously registered
4346
 *           lockmgr callback may also be invoked.
4347
 */
4348
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op));
4349

    
4350
#endif /* AVCODEC_AVCODEC_H */