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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 Libav.
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 *
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 * Libav 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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 * Libav 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 Libav; 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 */
444
#define CH_FRONT_LEFT            AV_CH_FRONT_LEFT
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#define CH_FRONT_RIGHT           AV_CH_FRONT_RIGHT
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#define CH_FRONT_CENTER          AV_CH_FRONT_CENTER
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#define CH_LOW_FREQUENCY         AV_CH_LOW_FREQUENCY
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#define CH_BACK_LEFT             AV_CH_BACK_LEFT
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#define CH_BACK_RIGHT            AV_CH_BACK_RIGHT
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#define CH_FRONT_LEFT_OF_CENTER  AV_CH_FRONT_LEFT_OF_CENTER
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#define CH_FRONT_RIGHT_OF_CENTER AV_CH_FRONT_RIGHT_OF_CENTER
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#define CH_BACK_CENTER           AV_CH_BACK_CENTER
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#define CH_SIDE_LEFT             AV_CH_SIDE_LEFT
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#define CH_SIDE_RIGHT            AV_CH_SIDE_RIGHT
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#define CH_TOP_CENTER            AV_CH_TOP_CENTER
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#define CH_TOP_FRONT_LEFT        AV_CH_TOP_FRONT_LEFT
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#define CH_TOP_FRONT_CENTER      AV_CH_TOP_FRONT_CENTER
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#define CH_TOP_FRONT_RIGHT       AV_CH_TOP_FRONT_RIGHT
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#define CH_TOP_BACK_LEFT         AV_CH_TOP_BACK_LEFT
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#define CH_TOP_BACK_CENTER       AV_CH_TOP_BACK_CENTER
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#define CH_TOP_BACK_RIGHT        AV_CH_TOP_BACK_RIGHT
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#define CH_STEREO_LEFT           AV_CH_STEREO_LEFT
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#define CH_STEREO_RIGHT          AV_CH_STEREO_RIGHT
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/** Channel mask value used for AVCodecContext.request_channel_layout
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    to indicate that the user requests the channel order of the decoder output
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    to be the native codec channel order. */
468
#define CH_LAYOUT_NATIVE         AV_CH_LAYOUT_NATIVE
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/* Audio channel convenience macros */
471
#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
 * Codec is able to deal with negative linesizes
730
 */
731
#define CODEC_CAP_NEG_LINESIZES    0x0800
732
/**
733
 * Codec supports frame-level multithreading.
734
 */
735
#define CODEC_CAP_FRAME_THREADS    0x1000
736

    
737
//The following defines may change, don't expect compatibility if you use them.
738
#define MB_TYPE_INTRA4x4   0x0001
739
#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific
740
#define MB_TYPE_INTRA_PCM  0x0004 //FIXME H.264-specific
741
#define MB_TYPE_16x16      0x0008
742
#define MB_TYPE_16x8       0x0010
743
#define MB_TYPE_8x16       0x0020
744
#define MB_TYPE_8x8        0x0040
745
#define MB_TYPE_INTERLACED 0x0080
746
#define MB_TYPE_DIRECT2    0x0100 //FIXME
747
#define MB_TYPE_ACPRED     0x0200
748
#define MB_TYPE_GMC        0x0400
749
#define MB_TYPE_SKIP       0x0800
750
#define MB_TYPE_P0L0       0x1000
751
#define MB_TYPE_P1L0       0x2000
752
#define MB_TYPE_P0L1       0x4000
753
#define MB_TYPE_P1L1       0x8000
754
#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
755
#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
756
#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
757
#define MB_TYPE_QUANT      0x00010000
758
#define MB_TYPE_CBP        0x00020000
759
//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
760

    
761
/**
762
 * Pan Scan area.
763
 * This specifies the area which should be displayed.
764
 * Note there may be multiple such areas for one frame.
765
 */
766
typedef struct AVPanScan{
767
    /**
768
     * id
769
     * - encoding: Set by user.
770
     * - decoding: Set by libavcodec.
771
     */
772
    int id;
773

    
774
    /**
775
     * width and height in 1/16 pel
776
     * - encoding: Set by user.
777
     * - decoding: Set by libavcodec.
778
     */
779
    int width;
780
    int height;
781

    
782
    /**
783
     * position of the top left corner in 1/16 pel for up to 3 fields/frames
784
     * - encoding: Set by user.
785
     * - decoding: Set by libavcodec.
786
     */
787
    int16_t position[3][2];
788
}AVPanScan;
789

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

    
1050
#define FF_QSCALE_TYPE_MPEG1 0
1051
#define FF_QSCALE_TYPE_MPEG2 1
1052
#define FF_QSCALE_TYPE_H264  2
1053
#define FF_QSCALE_TYPE_VP56  3
1054

    
1055
#define FF_BUFFER_TYPE_INTERNAL 1
1056
#define FF_BUFFER_TYPE_USER     2 ///< direct rendering buffers (image is (de)allocated by user)
1057
#define FF_BUFFER_TYPE_SHARED   4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared.
1058
#define FF_BUFFER_TYPE_COPY     8 ///< Just a (modified) copy of some other buffer, don't deallocate anything.
1059

    
1060

    
1061
#define FF_I_TYPE  1 ///< Intra
1062
#define FF_P_TYPE  2 ///< Predicted
1063
#define FF_B_TYPE  3 ///< Bi-dir predicted
1064
#define FF_S_TYPE  4 ///< S(GMC)-VOP MPEG4
1065
#define FF_SI_TYPE 5 ///< Switching Intra
1066
#define FF_SP_TYPE 6 ///< Switching Predicted
1067
#define FF_BI_TYPE 7
1068

    
1069
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore).
1070
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer.
1071
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content.
1072
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update).
1073

    
1074
typedef struct AVPacket {
1075
    /**
1076
     * Presentation timestamp in AVStream->time_base units; the time at which
1077
     * the decompressed packet will be presented to the user.
1078
     * Can be AV_NOPTS_VALUE if it is not stored in the file.
1079
     * pts MUST be larger or equal to dts as presentation cannot happen before
1080
     * decompression, unless one wants to view hex dumps. Some formats misuse
1081
     * the terms dts and pts/cts to mean something different. Such timestamps
1082
     * must be converted to true pts/dts before they are stored in AVPacket.
1083
     */
1084
    int64_t pts;
1085
    /**
1086
     * Decompression timestamp in AVStream->time_base units; the time at which
1087
     * the packet is decompressed.
1088
     * Can be AV_NOPTS_VALUE if it is not stored in the file.
1089
     */
1090
    int64_t dts;
1091
    uint8_t *data;
1092
    int   size;
1093
    int   stream_index;
1094
    int   flags;
1095
    /**
1096
     * Duration of this packet in AVStream->time_base units, 0 if unknown.
1097
     * Equals next_pts - this_pts in presentation order.
1098
     */
1099
    int   duration;
1100
    void  (*destruct)(struct AVPacket *);
1101
    void  *priv;
1102
    int64_t pos;                            ///< byte position in stream, -1 if unknown
1103

    
1104
    /**
1105
     * Time difference in AVStream->time_base units from the pts of this
1106
     * packet to the point at which the output from the decoder has converged
1107
     * independent from the availability of previous frames. That is, the
1108
     * frames are virtually identical no matter if decoding started from
1109
     * the very first frame or from this keyframe.
1110
     * Is AV_NOPTS_VALUE if unknown.
1111
     * This field is not the display duration of the current packet.
1112
     * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY
1113
     * set.
1114
     *
1115
     * The purpose of this field is to allow seeking in streams that have no
1116
     * keyframes in the conventional sense. It corresponds to the
1117
     * recovery point SEI in H.264 and match_time_delta in NUT. It is also
1118
     * essential for some types of subtitle streams to ensure that all
1119
     * subtitles are correctly displayed after seeking.
1120
     */
1121
    int64_t convergence_duration;
1122
} AVPacket;
1123
#define AV_PKT_FLAG_KEY   0x0001
1124
#if LIBAVCODEC_VERSION_MAJOR < 53
1125
#define PKT_FLAG_KEY AV_PKT_FLAG_KEY
1126
#endif
1127

    
1128
/**
1129
 * Audio Video Frame.
1130
 * New fields can be added to the end of FF_COMMON_FRAME with minor version
1131
 * bumps.
1132
 * Removal, reordering and changes to existing fields require a major
1133
 * version bump. No fields should be added into AVFrame before or after
1134
 * FF_COMMON_FRAME!
1135
 * sizeof(AVFrame) must not be used outside libav*.
1136
 */
1137
typedef struct AVFrame {
1138
    FF_COMMON_FRAME
1139
} AVFrame;
1140

    
1141
/**
1142
 * main external API structure.
1143
 * New fields can be added to the end with minor version bumps.
1144
 * Removal, reordering and changes to existing fields require a major
1145
 * version bump.
1146
 * sizeof(AVCodecContext) must not be used outside libav*.
1147
 */
1148
typedef struct AVCodecContext {
1149
    /**
1150
     * information on struct for av_log
1151
     * - set by avcodec_alloc_context
1152
     */
1153
    const AVClass *av_class;
1154
    /**
1155
     * the average bitrate
1156
     * - encoding: Set by user; unused for constant quantizer encoding.
1157
     * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
1158
     */
1159
    int bit_rate;
1160

    
1161
    /**
1162
     * number of bits the bitstream is allowed to diverge from the reference.
1163
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
1164
     * - encoding: Set by user; unused for constant quantizer encoding.
1165
     * - decoding: unused
1166
     */
1167
    int bit_rate_tolerance;
1168

    
1169
    /**
1170
     * CODEC_FLAG_*.
1171
     * - encoding: Set by user.
1172
     * - decoding: Set by user.
1173
     */
1174
    int flags;
1175

    
1176
    /**
1177
     * Some codecs need additional format info. It is stored here.
1178
     * If any muxer uses this then ALL demuxers/parsers AND encoders for the
1179
     * specific codec MUST set it correctly otherwise stream copy breaks.
1180
     * In general use of this field by muxers is not recommanded.
1181
     * - encoding: Set by libavcodec.
1182
     * - decoding: Set by libavcodec. (FIXME: Is this OK?)
1183
     */
1184
    int sub_id;
1185

    
1186
    /**
1187
     * Motion estimation algorithm used for video coding.
1188
     * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
1189
     * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific]
1190
     * - encoding: MUST be set by user.
1191
     * - decoding: unused
1192
     */
1193
    int me_method;
1194

    
1195
    /**
1196
     * some codecs need / can use extradata like Huffman tables.
1197
     * mjpeg: Huffman tables
1198
     * rv10: additional flags
1199
     * mpeg4: global headers (they can be in the bitstream or here)
1200
     * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
1201
     * than extradata_size to avoid prolems if it is read with the bitstream reader.
1202
     * The bytewise contents of extradata must not depend on the architecture or CPU endianness.
1203
     * - encoding: Set/allocated/freed by libavcodec.
1204
     * - decoding: Set/allocated/freed by user.
1205
     */
1206
    uint8_t *extradata;
1207
    int extradata_size;
1208

    
1209
    /**
1210
     * This is the fundamental unit of time (in seconds) in terms
1211
     * of which frame timestamps are represented. For fixed-fps content,
1212
     * timebase should be 1/framerate and timestamp increments should be
1213
     * identically 1.
1214
     * - encoding: MUST be set by user.
1215
     * - decoding: Set by libavcodec.
1216
     */
1217
    AVRational time_base;
1218

    
1219
    /* video only */
1220
    /**
1221
     * picture width / height.
1222
     * - encoding: MUST be set by user.
1223
     * - decoding: Set by libavcodec.
1224
     * Note: For compatibility it is possible to set this instead of
1225
     * coded_width/height before decoding.
1226
     */
1227
    int width, height;
1228

    
1229
#define FF_ASPECT_EXTENDED 15
1230

    
1231
    /**
1232
     * the number of pictures in a group of pictures, or 0 for intra_only
1233
     * - encoding: Set by user.
1234
     * - decoding: unused
1235
     */
1236
    int gop_size;
1237

    
1238
    /**
1239
     * Pixel format, see PIX_FMT_xxx.
1240
     * May be set by the demuxer if known from headers.
1241
     * May be overriden by the decoder if it knows better.
1242
     * - encoding: Set by user.
1243
     * - decoding: Set by user if known, overridden by libavcodec if known
1244
     */
1245
    enum PixelFormat pix_fmt;
1246

    
1247
    /**
1248
     * Frame rate emulation. If not zero, the lower layer (i.e. format handler)
1249
     * has to read frames at native frame rate.
1250
     * - encoding: Set by user.
1251
     * - decoding: unused
1252
     */
1253
    int rate_emu;
1254

    
1255
    /**
1256
     * If non NULL, 'draw_horiz_band' is called by the libavcodec
1257
     * decoder to draw a horizontal band. It improves cache usage. Not
1258
     * all codecs can do that. You must check the codec capabilities
1259
     * beforehand.
1260
     * When multithreading is used, it may be called from multiple threads
1261
     * at the same time; threads might draw different parts of the same AVFrame,
1262
     * or multiple AVFrames, and there is no guarantee that slices will be drawn
1263
     * in order.
1264
     * The function is also used by hardware acceleration APIs.
1265
     * It is called at least once during frame decoding to pass
1266
     * the data needed for hardware render.
1267
     * In that mode instead of pixel data, AVFrame points to
1268
     * a structure specific to the acceleration API. The application
1269
     * reads the structure and can change some fields to indicate progress
1270
     * or mark state.
1271
     * - encoding: unused
1272
     * - decoding: Set by user.
1273
     * @param height the height of the slice
1274
     * @param y the y position of the slice
1275
     * @param type 1->top field, 2->bottom field, 3->frame
1276
     * @param offset offset into the AVFrame.data from which the slice should be read
1277
     */
1278
    void (*draw_horiz_band)(struct AVCodecContext *s,
1279
                            const AVFrame *src, int offset[4],
1280
                            int y, int type, int height);
1281

    
1282
    /* audio only */
1283
    int sample_rate; ///< samples per second
1284
    int channels;    ///< number of audio channels
1285

    
1286
    /**
1287
     * audio sample format
1288
     * - encoding: Set by user.
1289
     * - decoding: Set by libavcodec.
1290
     */
1291
    enum AVSampleFormat sample_fmt;  ///< sample format
1292

    
1293
    /* The following data should not be initialized. */
1294
    /**
1295
     * Samples per packet, initialized when calling 'init'.
1296
     */
1297
    int frame_size;
1298
    int frame_number;   ///< audio or video frame number
1299
#if LIBAVCODEC_VERSION_MAJOR < 53
1300
    int real_pict_num;  ///< Returns the real picture number of previous encoded frame.
1301
#endif
1302

    
1303
    /**
1304
     * Number of frames the decoded output will be delayed relative to
1305
     * the encoded input.
1306
     * - encoding: Set by libavcodec.
1307
     * - decoding: unused
1308
     */
1309
    int delay;
1310

    
1311
    /* - encoding parameters */
1312
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
1313
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
1314

    
1315
    /**
1316
     * minimum quantizer
1317
     * - encoding: Set by user.
1318
     * - decoding: unused
1319
     */
1320
    int qmin;
1321

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

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

    
1336
    /**
1337
     * maximum number of B-frames between non-B-frames
1338
     * Note: The output will be delayed by max_b_frames+1 relative to the input.
1339
     * - encoding: Set by user.
1340
     * - decoding: unused
1341
     */
1342
    int max_b_frames;
1343

    
1344
    /**
1345
     * qscale factor between IP and B-frames
1346
     * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
1347
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1348
     * - encoding: Set by user.
1349
     * - decoding: unused
1350
     */
1351
    float b_quant_factor;
1352

    
1353
    /** obsolete FIXME remove */
1354
    int rc_strategy;
1355
#define FF_RC_STRATEGY_XVID 1
1356

    
1357
    int b_frame_strategy;
1358

    
1359
    /**
1360
     * hurry up amount
1361
     * - encoding: unused
1362
     * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header
1363
     * @deprecated Deprecated in favor of skip_idct and skip_frame.
1364
     */
1365
    int hurry_up;
1366

    
1367
    struct AVCodec *codec;
1368

    
1369
    void *priv_data;
1370

    
1371
    int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
1372
                            /* do its best to deliver a chunk with size     */
1373
                            /* below rtp_payload_size, the chunk will start */
1374
                            /* with a start code on some codecs like H.263. */
1375
                            /* This doesn't take account of any particular  */
1376
                            /* headers inside the transmitted RTP payload.  */
1377

    
1378

    
1379
    /* The RTP callback: This function is called    */
1380
    /* every time the encoder has a packet to send. */
1381
    /* It depends on the encoder if the data starts */
1382
    /* with a Start Code (it should). H.263 does.   */
1383
    /* mb_nb contains the number of macroblocks     */
1384
    /* encoded in the RTP payload.                  */
1385
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
1386

    
1387
    /* statistics, used for 2-pass encoding */
1388
    int mv_bits;
1389
    int header_bits;
1390
    int i_tex_bits;
1391
    int p_tex_bits;
1392
    int i_count;
1393
    int p_count;
1394
    int skip_count;
1395
    int misc_bits;
1396

    
1397
    /**
1398
     * number of bits used for the previously encoded frame
1399
     * - encoding: Set by libavcodec.
1400
     * - decoding: unused
1401
     */
1402
    int frame_bits;
1403

    
1404
    /**
1405
     * Private data of the user, can be used to carry app specific stuff.
1406
     * - encoding: Set by user.
1407
     * - decoding: Set by user.
1408
     */
1409
    void *opaque;
1410

    
1411
    char codec_name[32];
1412
    enum AVMediaType codec_type; /* see AVMEDIA_TYPE_xxx */
1413
    enum CodecID codec_id; /* see CODEC_ID_xxx */
1414

    
1415
    /**
1416
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1417
     * This is used to work around some encoder bugs.
1418
     * A demuxer should set this to what is stored in the field used to identify the codec.
1419
     * If there are multiple such fields in a container then the demuxer should choose the one
1420
     * which maximizes the information about the used codec.
1421
     * If the codec tag field in a container is larger then 32 bits then the demuxer should
1422
     * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
1423
     * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
1424
     * first.
1425
     * - encoding: Set by user, if not then the default based on codec_id will be used.
1426
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
1427
     */
1428
    unsigned int codec_tag;
1429

    
1430
    /**
1431
     * Work around bugs in encoders which sometimes cannot be detected automatically.
1432
     * - encoding: Set by user
1433
     * - decoding: Set by user
1434
     */
1435
    int workaround_bugs;
1436
#define FF_BUG_AUTODETECT       1  ///< autodetection
1437
#define FF_BUG_OLD_MSMPEG4      2
1438
#define FF_BUG_XVID_ILACE       4
1439
#define FF_BUG_UMP4             8
1440
#define FF_BUG_NO_PADDING       16
1441
#define FF_BUG_AMV              32
1442
#define FF_BUG_AC_VLC           0  ///< Will be removed, libavcodec can now handle these non-compliant files by default.
1443
#define FF_BUG_QPEL_CHROMA      64
1444
#define FF_BUG_STD_QPEL         128
1445
#define FF_BUG_QPEL_CHROMA2     256
1446
#define FF_BUG_DIRECT_BLOCKSIZE 512
1447
#define FF_BUG_EDGE             1024
1448
#define FF_BUG_HPEL_CHROMA      2048
1449
#define FF_BUG_DC_CLIP          4096
1450
#define FF_BUG_MS               8192 ///< Work around various bugs in Microsoft's broken decoders.
1451
#define FF_BUG_TRUNCATED       16384
1452
//#define FF_BUG_FAKE_SCALABILITY 16 //Autodetection should work 100%.
1453

    
1454
    /**
1455
     * luma single coefficient elimination threshold
1456
     * - encoding: Set by user.
1457
     * - decoding: unused
1458
     */
1459
    int luma_elim_threshold;
1460

    
1461
    /**
1462
     * chroma single coeff elimination threshold
1463
     * - encoding: Set by user.
1464
     * - decoding: unused
1465
     */
1466
    int chroma_elim_threshold;
1467

    
1468
    /**
1469
     * strictly follow the standard (MPEG4, ...).
1470
     * - encoding: Set by user.
1471
     * - decoding: Set by user.
1472
     * Setting this to STRICT or higher means the encoder and decoder will
1473
     * generally do stupid things, whereas setting it to unofficial or lower
1474
     * will mean the encoder might produce output that is not supported by all
1475
     * spec-compliant decoders. Decoders don't differentiate between normal,
1476
     * unofficial and experimental (that is, they always try to decode things
1477
     * when they can) unless they are explicitly asked to behave stupidly
1478
     * (=strictly conform to the specs)
1479
     */
1480
    int strict_std_compliance;
1481
#define FF_COMPLIANCE_VERY_STRICT   2 ///< Strictly conform to an older more strict version of the spec or reference software.
1482
#define FF_COMPLIANCE_STRICT        1 ///< Strictly conform to all the things in the spec no matter what consequences.
1483
#define FF_COMPLIANCE_NORMAL        0
1484
#if FF_API_INOFFICIAL
1485
#define FF_COMPLIANCE_INOFFICIAL   -1 ///< Allow inofficial extensions (deprecated - use FF_COMPLIANCE_UNOFFICIAL instead).
1486
#endif
1487
#define FF_COMPLIANCE_UNOFFICIAL   -1 ///< Allow unofficial extensions
1488
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things.
1489

    
1490
    /**
1491
     * qscale offset between IP and B-frames
1492
     * - encoding: Set by user.
1493
     * - decoding: unused
1494
     */
1495
    float b_quant_offset;
1496

    
1497
    /**
1498
     * Error recognization; higher values will detect more errors but may
1499
     * misdetect some more or less valid parts as errors.
1500
     * - encoding: unused
1501
     * - decoding: Set by user.
1502
     */
1503
    int error_recognition;
1504
#define FF_ER_CAREFUL         1
1505
#define FF_ER_COMPLIANT       2
1506
#define FF_ER_AGGRESSIVE      3
1507
#define FF_ER_VERY_AGGRESSIVE 4
1508

    
1509
    /**
1510
     * Called at the beginning of each frame to get a buffer for it.
1511
     * If pic.reference is set then the frame will be read later by libavcodec.
1512
     * avcodec_align_dimensions2() should be used to find the required width and
1513
     * height, as they normally need to be rounded up to the next multiple of 16.
1514
     * if CODEC_CAP_DR1 is not set then get_buffer() must call
1515
     * avcodec_default_get_buffer() instead of providing buffers allocated by
1516
     * some other means.
1517
     * If frame multithreading is used and thread_safe_callbacks is set,
1518
     * it may be called from a different thread, but not from more than one at once.
1519
     * Does not need to be reentrant.
1520
     * - encoding: unused
1521
     * - decoding: Set by libavcodec, user can override.
1522
     */
1523
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1524

    
1525
    /**
1526
     * Called to release buffers which were allocated with get_buffer.
1527
     * A released buffer can be reused in get_buffer().
1528
     * pic.data[*] must be set to NULL.
1529
     * May be called from a different thread if frame multithreading is used,
1530
     * but not by more than one thread at once, so does not need to be reentrant.
1531
     * - encoding: unused
1532
     * - decoding: Set by libavcodec, user can override.
1533
     */
1534
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1535

    
1536
    /**
1537
     * Size of the frame reordering buffer in the decoder.
1538
     * For MPEG-2 it is 1 IPB or 0 low delay IP.
1539
     * - encoding: Set by libavcodec.
1540
     * - decoding: Set by libavcodec.
1541
     */
1542
    int has_b_frames;
1543

    
1544
    /**
1545
     * number of bytes per packet if constant and known or 0
1546
     * Used by some WAV based audio codecs.
1547
     */
1548
    int block_align;
1549

    
1550
    int parse_only; /* - decoding only: If true, only parsing is done
1551
                       (function avcodec_parse_frame()). The frame
1552
                       data is returned. Only MPEG codecs support this now. */
1553

    
1554
    /**
1555
     * 0-> h263 quant 1-> mpeg quant
1556
     * - encoding: Set by user.
1557
     * - decoding: unused
1558
     */
1559
    int mpeg_quant;
1560

    
1561
    /**
1562
     * pass1 encoding statistics output buffer
1563
     * - encoding: Set by libavcodec.
1564
     * - decoding: unused
1565
     */
1566
    char *stats_out;
1567

    
1568
    /**
1569
     * pass2 encoding statistics input buffer
1570
     * Concatenated stuff from stats_out of pass1 should be placed here.
1571
     * - encoding: Allocated/set/freed by user.
1572
     * - decoding: unused
1573
     */
1574
    char *stats_in;
1575

    
1576
    /**
1577
     * ratecontrol qmin qmax limiting method
1578
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
1579
     * - encoding: Set by user.
1580
     * - decoding: unused
1581
     */
1582
    float rc_qsquish;
1583

    
1584
    float rc_qmod_amp;
1585
    int rc_qmod_freq;
1586

    
1587
    /**
1588
     * ratecontrol override, see RcOverride
1589
     * - encoding: Allocated/set/freed by user.
1590
     * - decoding: unused
1591
     */
1592
    RcOverride *rc_override;
1593
    int rc_override_count;
1594

    
1595
    /**
1596
     * rate control equation
1597
     * - encoding: Set by user
1598
     * - decoding: unused
1599
     */
1600
    const char *rc_eq;
1601

    
1602
    /**
1603
     * maximum bitrate
1604
     * - encoding: Set by user.
1605
     * - decoding: unused
1606
     */
1607
    int rc_max_rate;
1608

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

    
1616
    /**
1617
     * decoder bitstream buffer size
1618
     * - encoding: Set by user.
1619
     * - decoding: unused
1620
     */
1621
    int rc_buffer_size;
1622
    float rc_buffer_aggressivity;
1623

    
1624
    /**
1625
     * qscale factor between P and I-frames
1626
     * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
1627
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1628
     * - encoding: Set by user.
1629
     * - decoding: unused
1630
     */
1631
    float i_quant_factor;
1632

    
1633
    /**
1634
     * qscale offset between P and I-frames
1635
     * - encoding: Set by user.
1636
     * - decoding: unused
1637
     */
1638
    float i_quant_offset;
1639

    
1640
    /**
1641
     * initial complexity for pass1 ratecontrol
1642
     * - encoding: Set by user.
1643
     * - decoding: unused
1644
     */
1645
    float rc_initial_cplx;
1646

    
1647
    /**
1648
     * DCT algorithm, see FF_DCT_* below
1649
     * - encoding: Set by user.
1650
     * - decoding: unused
1651
     */
1652
    int dct_algo;
1653
#define FF_DCT_AUTO    0
1654
#define FF_DCT_FASTINT 1
1655
#define FF_DCT_INT     2
1656
#define FF_DCT_MMX     3
1657
#define FF_DCT_MLIB    4
1658
#define FF_DCT_ALTIVEC 5
1659
#define FF_DCT_FAAN    6
1660

    
1661
    /**
1662
     * luminance masking (0-> disabled)
1663
     * - encoding: Set by user.
1664
     * - decoding: unused
1665
     */
1666
    float lumi_masking;
1667

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

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

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

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

    
1696
    /**
1697
     * IDCT algorithm, see FF_IDCT_* below.
1698
     * - encoding: Set by user.
1699
     * - decoding: Set by user.
1700
     */
1701
    int idct_algo;
1702
#define FF_IDCT_AUTO          0
1703
#define FF_IDCT_INT           1
1704
#define FF_IDCT_SIMPLE        2
1705
#define FF_IDCT_SIMPLEMMX     3
1706
#define FF_IDCT_LIBMPEG2MMX   4
1707
#define FF_IDCT_PS2           5
1708
#define FF_IDCT_MLIB          6
1709
#define FF_IDCT_ARM           7
1710
#define FF_IDCT_ALTIVEC       8
1711
#define FF_IDCT_SH4           9
1712
#define FF_IDCT_SIMPLEARM     10
1713
#define FF_IDCT_H264          11
1714
#define FF_IDCT_VP3           12
1715
#define FF_IDCT_IPP           13
1716
#define FF_IDCT_XVIDMMX       14
1717
#define FF_IDCT_CAVS          15
1718
#define FF_IDCT_SIMPLEARMV5TE 16
1719
#define FF_IDCT_SIMPLEARMV6   17
1720
#define FF_IDCT_SIMPLEVIS     18
1721
#define FF_IDCT_WMV2          19
1722
#define FF_IDCT_FAAN          20
1723
#define FF_IDCT_EA            21
1724
#define FF_IDCT_SIMPLENEON    22
1725
#define FF_IDCT_SIMPLEALPHA   23
1726
#define FF_IDCT_BINK          24
1727

    
1728
    /**
1729
     * slice count
1730
     * - encoding: Set by libavcodec.
1731
     * - decoding: Set by user (or 0).
1732
     */
1733
    int slice_count;
1734
    /**
1735
     * slice offsets in the frame in bytes
1736
     * - encoding: Set/allocated by libavcodec.
1737
     * - decoding: Set/allocated by user (or NULL).
1738
     */
1739
    int *slice_offset;
1740

    
1741
    /**
1742
     * error concealment flags
1743
     * - encoding: unused
1744
     * - decoding: Set by user.
1745
     */
1746
    int error_concealment;
1747
#define FF_EC_GUESS_MVS   1
1748
#define FF_EC_DEBLOCK     2
1749

    
1750
    /**
1751
     * dsp_mask could be add used to disable unwanted CPU features
1752
     * CPU features (i.e. MMX, SSE. ...)
1753
     *
1754
     * With the FORCE flag you may instead enable given CPU features.
1755
     * (Dangerous: Usable in case of misdetection, improper usage however will
1756
     * result into program crash.)
1757
     */
1758
    unsigned dsp_mask;
1759

    
1760
#if FF_API_MM_FLAGS
1761
#define FF_MM_FORCE      AV_CPU_FLAG_FORCE
1762
#define FF_MM_MMX        AV_CPU_FLAG_MMX
1763
#define FF_MM_3DNOW      AV_CPU_FLAG_3DNOW
1764
#define FF_MM_MMXEXT     AV_CPU_FLAG_MMX2
1765
#define FF_MM_MMX2       AV_CPU_FLAG_MMX2
1766
#define FF_MM_SSE        AV_CPU_FLAG_SSE
1767
#define FF_MM_SSE2       AV_CPU_FLAG_SSE2
1768
#define FF_MM_SSE2SLOW   AV_CPU_FLAG_SSE2SLOW
1769
#define FF_MM_3DNOWEXT   AV_CPU_FLAG_3DNOWEXT
1770
#define FF_MM_SSE3       AV_CPU_FLAG_SSE3
1771
#define FF_MM_SSE3SLOW   AV_CPU_FLAG_SSE3SLOW
1772
#define FF_MM_SSSE3      AV_CPU_FLAG_SSSE3
1773
#define FF_MM_SSE4       AV_CPU_FLAG_SSE4
1774
#define FF_MM_SSE42      AV_CPU_FLAG_SSE42
1775
#define FF_MM_IWMMXT     AV_CPU_FLAG_IWMMXT
1776
#define FF_MM_ALTIVEC    AV_CPU_FLAG_ALTIVEC
1777
#endif
1778

    
1779
    /**
1780
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1781
     * - encoding: Set by libavcodec.
1782
     * - decoding: Set by user.
1783
     */
1784
     int bits_per_coded_sample;
1785

    
1786
    /**
1787
     * prediction method (needed for huffyuv)
1788
     * - encoding: Set by user.
1789
     * - decoding: unused
1790
     */
1791
     int prediction_method;
1792
#define FF_PRED_LEFT   0
1793
#define FF_PRED_PLANE  1
1794
#define FF_PRED_MEDIAN 2
1795

    
1796
    /**
1797
     * sample aspect ratio (0 if unknown)
1798
     * That is the width of a pixel divided by the height of the pixel.
1799
     * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
1800
     * - encoding: Set by user.
1801
     * - decoding: Set by libavcodec.
1802
     */
1803
    AVRational sample_aspect_ratio;
1804

    
1805
    /**
1806
     * the picture in the bitstream
1807
     * - encoding: Set by libavcodec.
1808
     * - decoding: Set by libavcodec.
1809
     */
1810
    AVFrame *coded_frame;
1811

    
1812
    /**
1813
     * debug
1814
     * - encoding: Set by user.
1815
     * - decoding: Set by user.
1816
     */
1817
    int debug;
1818
#define FF_DEBUG_PICT_INFO   1
1819
#define FF_DEBUG_RC          2
1820
#define FF_DEBUG_BITSTREAM   4
1821
#define FF_DEBUG_MB_TYPE     8
1822
#define FF_DEBUG_QP          16
1823
#define FF_DEBUG_MV          32
1824
#define FF_DEBUG_DCT_COEFF   0x00000040
1825
#define FF_DEBUG_SKIP        0x00000080
1826
#define FF_DEBUG_STARTCODE   0x00000100
1827
#define FF_DEBUG_PTS         0x00000200
1828
#define FF_DEBUG_ER          0x00000400
1829
#define FF_DEBUG_MMCO        0x00000800
1830
#define FF_DEBUG_BUGS        0x00001000
1831
#define FF_DEBUG_VIS_QP      0x00002000
1832
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1833
#define FF_DEBUG_BUFFERS     0x00008000
1834
#define FF_DEBUG_THREADS     0x00010000
1835

    
1836
    /**
1837
     * debug
1838
     * - encoding: Set by user.
1839
     * - decoding: Set by user.
1840
     */
1841
    int debug_mv;
1842
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1843
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1844
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1845

    
1846
    /**
1847
     * error
1848
     * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
1849
     * - decoding: unused
1850
     */
1851
    uint64_t error[4];
1852

    
1853
    /**
1854
     * minimum MB quantizer
1855
     * - encoding: unused
1856
     * - decoding: unused
1857
     */
1858
    int mb_qmin;
1859

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

    
1867
    /**
1868
     * motion estimation comparison function
1869
     * - encoding: Set by user.
1870
     * - decoding: unused
1871
     */
1872
    int me_cmp;
1873
    /**
1874
     * subpixel motion estimation comparison function
1875
     * - encoding: Set by user.
1876
     * - decoding: unused
1877
     */
1878
    int me_sub_cmp;
1879
    /**
1880
     * macroblock comparison function (not supported yet)
1881
     * - encoding: Set by user.
1882
     * - decoding: unused
1883
     */
1884
    int mb_cmp;
1885
    /**
1886
     * interlaced DCT comparison function
1887
     * - encoding: Set by user.
1888
     * - decoding: unused
1889
     */
1890
    int ildct_cmp;
1891
#define FF_CMP_SAD    0
1892
#define FF_CMP_SSE    1
1893
#define FF_CMP_SATD   2
1894
#define FF_CMP_DCT    3
1895
#define FF_CMP_PSNR   4
1896
#define FF_CMP_BIT    5
1897
#define FF_CMP_RD     6
1898
#define FF_CMP_ZERO   7
1899
#define FF_CMP_VSAD   8
1900
#define FF_CMP_VSSE   9
1901
#define FF_CMP_NSSE   10
1902
#define FF_CMP_W53    11
1903
#define FF_CMP_W97    12
1904
#define FF_CMP_DCTMAX 13
1905
#define FF_CMP_DCT264 14
1906
#define FF_CMP_CHROMA 256
1907

    
1908
    /**
1909
     * ME diamond size & shape
1910
     * - encoding: Set by user.
1911
     * - decoding: unused
1912
     */
1913
    int dia_size;
1914

    
1915
    /**
1916
     * amount of previous MV predictors (2a+1 x 2a+1 square)
1917
     * - encoding: Set by user.
1918
     * - decoding: unused
1919
     */
1920
    int last_predictor_count;
1921

    
1922
    /**
1923
     * prepass for motion estimation
1924
     * - encoding: Set by user.
1925
     * - decoding: unused
1926
     */
1927
    int pre_me;
1928

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

    
1936
    /**
1937
     * ME prepass diamond size & shape
1938
     * - encoding: Set by user.
1939
     * - decoding: unused
1940
     */
1941
    int pre_dia_size;
1942

    
1943
    /**
1944
     * subpel ME quality
1945
     * - encoding: Set by user.
1946
     * - decoding: unused
1947
     */
1948
    int me_subpel_quality;
1949

    
1950
    /**
1951
     * callback to negotiate the pixelFormat
1952
     * @param fmt is the list of formats which are supported by the codec,
1953
     * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
1954
     * The first is always the native one.
1955
     * @return the chosen format
1956
     * - encoding: unused
1957
     * - decoding: Set by user, if not set the native format will be chosen.
1958
     */
1959
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1960

    
1961
    /**
1962
     * DTG active format information (additional aspect ratio
1963
     * information only used in DVB MPEG-2 transport streams)
1964
     * 0 if not set.
1965
     *
1966
     * - encoding: unused
1967
     * - decoding: Set by decoder.
1968
     */
1969
    int dtg_active_format;
1970
#define FF_DTG_AFD_SAME         8
1971
#define FF_DTG_AFD_4_3          9
1972
#define FF_DTG_AFD_16_9         10
1973
#define FF_DTG_AFD_14_9         11
1974
#define FF_DTG_AFD_4_3_SP_14_9  13
1975
#define FF_DTG_AFD_16_9_SP_14_9 14
1976
#define FF_DTG_AFD_SP_4_3       15
1977

    
1978
    /**
1979
     * maximum motion estimation search range in subpel units
1980
     * If 0 then no limit.
1981
     *
1982
     * - encoding: Set by user.
1983
     * - decoding: unused
1984
     */
1985
    int me_range;
1986

    
1987
    /**
1988
     * intra quantizer bias
1989
     * - encoding: Set by user.
1990
     * - decoding: unused
1991
     */
1992
    int intra_quant_bias;
1993
#define FF_DEFAULT_QUANT_BIAS 999999
1994

    
1995
    /**
1996
     * inter quantizer bias
1997
     * - encoding: Set by user.
1998
     * - decoding: unused
1999
     */
2000
    int inter_quant_bias;
2001

    
2002
    /**
2003
     * color table ID
2004
     * - encoding: unused
2005
     * - decoding: Which clrtable should be used for 8bit RGB images.
2006
     *             Tables have to be stored somewhere. FIXME
2007
     */
2008
    int color_table_id;
2009

    
2010
    /**
2011
     * internal_buffer count
2012
     * Don't touch, used by libavcodec default_get_buffer().
2013
     */
2014
    int internal_buffer_count;
2015

    
2016
    /**
2017
     * internal_buffers
2018
     * Don't touch, used by libavcodec default_get_buffer().
2019
     */
2020
    void *internal_buffer;
2021

    
2022
    /**
2023
     * Global quality for codecs which cannot change it per frame.
2024
     * This should be proportional to MPEG-1/2/4 qscale.
2025
     * - encoding: Set by user.
2026
     * - decoding: unused
2027
     */
2028
    int global_quality;
2029

    
2030
#define FF_CODER_TYPE_VLC       0
2031
#define FF_CODER_TYPE_AC        1
2032
#define FF_CODER_TYPE_RAW       2
2033
#define FF_CODER_TYPE_RLE       3
2034
#define FF_CODER_TYPE_DEFLATE   4
2035
    /**
2036
     * coder type
2037
     * - encoding: Set by user.
2038
     * - decoding: unused
2039
     */
2040
    int coder_type;
2041

    
2042
    /**
2043
     * context model
2044
     * - encoding: Set by user.
2045
     * - decoding: unused
2046
     */
2047
    int context_model;
2048
#if 0
2049
    /**
2050
     *
2051
     * - encoding: unused
2052
     * - decoding: Set by user.
2053
     */
2054
    uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
2055
#endif
2056

    
2057
    /**
2058
     * slice flags
2059
     * - encoding: unused
2060
     * - decoding: Set by user.
2061
     */
2062
    int slice_flags;
2063
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
2064
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
2065
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
2066

    
2067
    /**
2068
     * XVideo Motion Acceleration
2069
     * - encoding: forbidden
2070
     * - decoding: set by decoder
2071
     */
2072
    int xvmc_acceleration;
2073

    
2074
    /**
2075
     * macroblock decision mode
2076
     * - encoding: Set by user.
2077
     * - decoding: unused
2078
     */
2079
    int mb_decision;
2080
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
2081
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
2082
#define FF_MB_DECISION_RD     2        ///< rate distortion
2083

    
2084
    /**
2085
     * custom intra quantization matrix
2086
     * - encoding: Set by user, can be NULL.
2087
     * - decoding: Set by libavcodec.
2088
     */
2089
    uint16_t *intra_matrix;
2090

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

    
2098
    /**
2099
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
2100
     * This is used to work around some encoder bugs.
2101
     * - encoding: unused
2102
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
2103
     */
2104
    unsigned int stream_codec_tag;
2105

    
2106
    /**
2107
     * scene change detection threshold
2108
     * 0 is default, larger means fewer detected scene changes.
2109
     * - encoding: Set by user.
2110
     * - decoding: unused
2111
     */
2112
    int scenechange_threshold;
2113

    
2114
    /**
2115
     * minimum Lagrange multipler
2116
     * - encoding: Set by user.
2117
     * - decoding: unused
2118
     */
2119
    int lmin;
2120

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

    
2128
#if FF_API_PALETTE_CONTROL
2129
    /**
2130
     * palette control structure
2131
     * - encoding: ??? (no palette-enabled encoder yet)
2132
     * - decoding: Set by user.
2133
     */
2134
    struct AVPaletteControl *palctrl;
2135
#endif
2136

    
2137
    /**
2138
     * noise reduction strength
2139
     * - encoding: Set by user.
2140
     * - decoding: unused
2141
     */
2142
    int noise_reduction;
2143

    
2144
    /**
2145
     * Called at the beginning of a frame to get cr buffer for it.
2146
     * Buffer type (size, hints) must be the same. libavcodec won't check it.
2147
     * libavcodec will pass previous buffer in pic, function should return
2148
     * same buffer or new buffer with old frame "painted" into it.
2149
     * If pic.data[0] == NULL must behave like get_buffer().
2150
     * if CODEC_CAP_DR1 is not set then reget_buffer() must call
2151
     * avcodec_default_reget_buffer() instead of providing buffers allocated by
2152
     * some other means.
2153
     * - encoding: unused
2154
     * - decoding: Set by libavcodec, user can override.
2155
     */
2156
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
2157

    
2158
    /**
2159
     * Number of bits which should be loaded into the rc buffer before decoding starts.
2160
     * - encoding: Set by user.
2161
     * - decoding: unused
2162
     */
2163
    int rc_initial_buffer_occupancy;
2164

    
2165
    /**
2166
     *
2167
     * - encoding: Set by user.
2168
     * - decoding: unused
2169
     */
2170
    int inter_threshold;
2171

    
2172
    /**
2173
     * CODEC_FLAG2_*
2174
     * - encoding: Set by user.
2175
     * - decoding: Set by user.
2176
     */
2177
    int flags2;
2178

    
2179
    /**
2180
     * Simulates errors in the bitstream to test error concealment.
2181
     * - encoding: Set by user.
2182
     * - decoding: unused
2183
     */
2184
    int error_rate;
2185

    
2186
    /**
2187
     * MP3 antialias algorithm, see FF_AA_* below.
2188
     * - encoding: unused
2189
     * - decoding: Set by user.
2190
     */
2191
    int antialias_algo;
2192
#define FF_AA_AUTO    0
2193
#define FF_AA_FASTINT 1 //not implemented yet
2194
#define FF_AA_INT     2
2195
#define FF_AA_FLOAT   3
2196
    /**
2197
     * quantizer noise shaping
2198
     * - encoding: Set by user.
2199
     * - decoding: unused
2200
     */
2201
    int quantizer_noise_shaping;
2202

    
2203
    /**
2204
     * thread count
2205
     * is used to decide how many independent tasks should be passed to execute()
2206
     * - encoding: Set by user.
2207
     * - decoding: Set by user.
2208
     */
2209
    int thread_count;
2210

    
2211
    /**
2212
     * The codec may call this to execute several independent things.
2213
     * It will return only after finishing all tasks.
2214
     * The user may replace this with some multithreaded implementation,
2215
     * the default implementation will execute the parts serially.
2216
     * @param count the number of things to execute
2217
     * - encoding: Set by libavcodec, user can override.
2218
     * - decoding: Set by libavcodec, user can override.
2219
     */
2220
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size);
2221

    
2222
    /**
2223
     * thread opaque
2224
     * Can be used by execute() to store some per AVCodecContext stuff.
2225
     * - encoding: set by execute()
2226
     * - decoding: set by execute()
2227
     */
2228
    void *thread_opaque;
2229

    
2230
    /**
2231
     * Motion estimation threshold below which no motion estimation is
2232
     * performed, but instead the user specified motion vectors are used.
2233
     *
2234
     * - encoding: Set by user.
2235
     * - decoding: unused
2236
     */
2237
     int me_threshold;
2238

    
2239
    /**
2240
     * Macroblock threshold below which the user specified macroblock types will be used.
2241
     * - encoding: Set by user.
2242
     * - decoding: unused
2243
     */
2244
     int mb_threshold;
2245

    
2246
    /**
2247
     * precision of the intra DC coefficient - 8
2248
     * - encoding: Set by user.
2249
     * - decoding: unused
2250
     */
2251
     int intra_dc_precision;
2252

    
2253
    /**
2254
     * noise vs. sse weight for the nsse comparsion function
2255
     * - encoding: Set by user.
2256
     * - decoding: unused
2257
     */
2258
     int nsse_weight;
2259

    
2260
    /**
2261
     * Number of macroblock rows at the top which are skipped.
2262
     * - encoding: unused
2263
     * - decoding: Set by user.
2264
     */
2265
     int skip_top;
2266

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

    
2274
    /**
2275
     * profile
2276
     * - encoding: Set by user.
2277
     * - decoding: Set by libavcodec.
2278
     */
2279
     int profile;
2280
#define FF_PROFILE_UNKNOWN -99
2281
#define FF_PROFILE_RESERVED -100
2282

    
2283
#define FF_PROFILE_AAC_MAIN 0
2284
#define FF_PROFILE_AAC_LOW  1
2285
#define FF_PROFILE_AAC_SSR  2
2286
#define FF_PROFILE_AAC_LTP  3
2287

    
2288
#define FF_PROFILE_DTS         20
2289
#define FF_PROFILE_DTS_ES      30
2290
#define FF_PROFILE_DTS_96_24   40
2291
#define FF_PROFILE_DTS_HD_HRA  50
2292
#define FF_PROFILE_DTS_HD_MA   60
2293

    
2294
#define FF_PROFILE_MPEG2_422    0
2295
#define FF_PROFILE_MPEG2_HIGH   1
2296
#define FF_PROFILE_MPEG2_SS     2
2297
#define FF_PROFILE_MPEG2_SNR_SCALABLE  3
2298
#define FF_PROFILE_MPEG2_MAIN   4
2299
#define FF_PROFILE_MPEG2_SIMPLE 5
2300

    
2301
#define FF_PROFILE_H264_CONSTRAINED  (1<<9)  // 8+1; constraint_set1_flag
2302
#define FF_PROFILE_H264_INTRA        (1<<11) // 8+3; constraint_set3_flag
2303

    
2304
#define FF_PROFILE_H264_BASELINE             66
2305
#define FF_PROFILE_H264_CONSTRAINED_BASELINE (66|FF_PROFILE_H264_CONSTRAINED)
2306
#define FF_PROFILE_H264_MAIN                 77
2307
#define FF_PROFILE_H264_EXTENDED             88
2308
#define FF_PROFILE_H264_HIGH                 100
2309
#define FF_PROFILE_H264_HIGH_10              110
2310
#define FF_PROFILE_H264_HIGH_10_INTRA        (110|FF_PROFILE_H264_INTRA)
2311
#define FF_PROFILE_H264_HIGH_422             122
2312
#define FF_PROFILE_H264_HIGH_422_INTRA       (122|FF_PROFILE_H264_INTRA)
2313
#define FF_PROFILE_H264_HIGH_444             144
2314
#define FF_PROFILE_H264_HIGH_444_PREDICTIVE  244
2315
#define FF_PROFILE_H264_HIGH_444_INTRA       (244|FF_PROFILE_H264_INTRA)
2316
#define FF_PROFILE_H264_CAVLC_444            44
2317

    
2318
#define FF_PROFILE_VC1_SIMPLE   0
2319
#define FF_PROFILE_VC1_MAIN     1
2320
#define FF_PROFILE_VC1_COMPLEX  2
2321
#define FF_PROFILE_VC1_ADVANCED 3
2322

    
2323
    /**
2324
     * level
2325
     * - encoding: Set by user.
2326
     * - decoding: Set by libavcodec.
2327
     */
2328
     int level;
2329
#define FF_LEVEL_UNKNOWN -99
2330

    
2331
    /**
2332
     * low resolution decoding, 1-> 1/2 size, 2->1/4 size
2333
     * - encoding: unused
2334
     * - decoding: Set by user.
2335
     */
2336
     int lowres;
2337

    
2338
    /**
2339
     * Bitstream width / height, may be different from width/height if lowres
2340
     * or other things are used.
2341
     * - encoding: unused
2342
     * - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
2343
     */
2344
    int coded_width, coded_height;
2345

    
2346
    /**
2347
     * frame skip threshold
2348
     * - encoding: Set by user.
2349
     * - decoding: unused
2350
     */
2351
    int frame_skip_threshold;
2352

    
2353
    /**
2354
     * frame skip factor
2355
     * - encoding: Set by user.
2356
     * - decoding: unused
2357
     */
2358
    int frame_skip_factor;
2359

    
2360
    /**
2361
     * frame skip exponent
2362
     * - encoding: Set by user.
2363
     * - decoding: unused
2364
     */
2365
    int frame_skip_exp;
2366

    
2367
    /**
2368
     * frame skip comparison function
2369
     * - encoding: Set by user.
2370
     * - decoding: unused
2371
     */
2372
    int frame_skip_cmp;
2373

    
2374
    /**
2375
     * Border processing masking, raises the quantizer for mbs on the borders
2376
     * of the picture.
2377
     * - encoding: Set by user.
2378
     * - decoding: unused
2379
     */
2380
    float border_masking;
2381

    
2382
    /**
2383
     * minimum MB lagrange multipler
2384
     * - encoding: Set by user.
2385
     * - decoding: unused
2386
     */
2387
    int mb_lmin;
2388

    
2389
    /**
2390
     * maximum MB lagrange multipler
2391
     * - encoding: Set by user.
2392
     * - decoding: unused
2393
     */
2394
    int mb_lmax;
2395

    
2396
    /**
2397
     *
2398
     * - encoding: Set by user.
2399
     * - decoding: unused
2400
     */
2401
    int me_penalty_compensation;
2402

    
2403
    /**
2404
     *
2405
     * - encoding: unused
2406
     * - decoding: Set by user.
2407
     */
2408
    enum AVDiscard skip_loop_filter;
2409

    
2410
    /**
2411
     *
2412
     * - encoding: unused
2413
     * - decoding: Set by user.
2414
     */
2415
    enum AVDiscard skip_idct;
2416

    
2417
    /**
2418
     *
2419
     * - encoding: unused
2420
     * - decoding: Set by user.
2421
     */
2422
    enum AVDiscard skip_frame;
2423

    
2424
    /**
2425
     *
2426
     * - encoding: Set by user.
2427
     * - decoding: unused
2428
     */
2429
    int bidir_refine;
2430

    
2431
    /**
2432
     *
2433
     * - encoding: Set by user.
2434
     * - decoding: unused
2435
     */
2436
    int brd_scale;
2437

    
2438
    /**
2439
     * constant rate factor - quality-based VBR - values ~correspond to qps
2440
     * - encoding: Set by user.
2441
     * - decoding: unused
2442
     */
2443
    float crf;
2444

    
2445
    /**
2446
     * constant quantization parameter rate control method
2447
     * - encoding: Set by user.
2448
     * - decoding: unused
2449
     */
2450
    int cqp;
2451

    
2452
    /**
2453
     * minimum GOP size
2454
     * - encoding: Set by user.
2455
     * - decoding: unused
2456
     */
2457
    int keyint_min;
2458

    
2459
    /**
2460
     * number of reference frames
2461
     * - encoding: Set by user.
2462
     * - decoding: Set by lavc.
2463
     */
2464
    int refs;
2465

    
2466
    /**
2467
     * chroma qp offset from luma
2468
     * - encoding: Set by user.
2469
     * - decoding: unused
2470
     */
2471
    int chromaoffset;
2472

    
2473
    /**
2474
     * Influences how often B-frames are used.
2475
     * - encoding: Set by user.
2476
     * - decoding: unused
2477
     */
2478
    int bframebias;
2479

    
2480
    /**
2481
     * trellis RD quantization
2482
     * - encoding: Set by user.
2483
     * - decoding: unused
2484
     */
2485
    int trellis;
2486

    
2487
    /**
2488
     * Reduce fluctuations in qp (before curve compression).
2489
     * - encoding: Set by user.
2490
     * - decoding: unused
2491
     */
2492
    float complexityblur;
2493

    
2494
    /**
2495
     * in-loop deblocking filter alphac0 parameter
2496
     * alpha is in the range -6...6
2497
     * - encoding: Set by user.
2498
     * - decoding: unused
2499
     */
2500
    int deblockalpha;
2501

    
2502
    /**
2503
     * in-loop deblocking filter beta parameter
2504
     * beta is in the range -6...6
2505
     * - encoding: Set by user.
2506
     * - decoding: unused
2507
     */
2508
    int deblockbeta;
2509

    
2510
    /**
2511
     * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
2512
     * - encoding: Set by user.
2513
     * - decoding: unused
2514
     */
2515
    int partitions;
2516
#define X264_PART_I4X4 0x001  /* Analyze i4x4 */
2517
#define X264_PART_I8X8 0x002  /* Analyze i8x8 (requires 8x8 transform) */
2518
#define X264_PART_P8X8 0x010  /* Analyze p16x8, p8x16 and p8x8 */
2519
#define X264_PART_P4X4 0x020  /* Analyze p8x4, p4x8, p4x4 */
2520
#define X264_PART_B8X8 0x100  /* Analyze b16x8, b8x16 and b8x8 */
2521

    
2522
    /**
2523
     * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto)
2524
     * - encoding: Set by user.
2525
     * - decoding: unused
2526
     */
2527
    int directpred;
2528

    
2529
    /**
2530
     * Audio cutoff bandwidth (0 means "automatic")
2531
     * - encoding: Set by user.
2532
     * - decoding: unused
2533
     */
2534
    int cutoff;
2535

    
2536
    /**
2537
     * Multiplied by qscale for each frame and added to scene_change_score.
2538
     * - encoding: Set by user.
2539
     * - decoding: unused
2540
     */
2541
    int scenechange_factor;
2542

    
2543
    /**
2544
     *
2545
     * Note: Value depends upon the compare function used for fullpel ME.
2546
     * - encoding: Set by user.
2547
     * - decoding: unused
2548
     */
2549
    int mv0_threshold;
2550

    
2551
    /**
2552
     * Adjusts sensitivity of b_frame_strategy 1.
2553
     * - encoding: Set by user.
2554
     * - decoding: unused
2555
     */
2556
    int b_sensitivity;
2557

    
2558
    /**
2559
     * - encoding: Set by user.
2560
     * - decoding: unused
2561
     */
2562
    int compression_level;
2563
#define FF_COMPRESSION_DEFAULT -1
2564

    
2565
#if FF_API_USE_LPC
2566
    /**
2567
     * Sets whether to use LPC mode - used by FLAC encoder.
2568
     * - encoding: Set by user.
2569
     * - decoding: unused
2570
     * @deprecated Deprecated in favor of lpc_type and lpc_passes.
2571
     */
2572
    int use_lpc;
2573
#endif
2574

    
2575
    /**
2576
     * LPC coefficient precision - used by FLAC encoder
2577
     * - encoding: Set by user.
2578
     * - decoding: unused
2579
     */
2580
    int lpc_coeff_precision;
2581

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

    
2588
    /**
2589
     * - encoding: Set by user.
2590
     * - decoding: unused
2591
     */
2592
    int max_prediction_order;
2593

    
2594
    /**
2595
     * search method for selecting prediction order
2596
     * - encoding: Set by user.
2597
     * - decoding: unused
2598
     */
2599
    int prediction_order_method;
2600

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

    
2607
    /**
2608
     * - encoding: Set by user.
2609
     * - decoding: unused
2610
     */
2611
    int max_partition_order;
2612

    
2613
    /**
2614
     * GOP timecode frame start number, in non drop frame format
2615
     * - encoding: Set by user.
2616
     * - decoding: unused
2617
     */
2618
    int64_t timecode_frame_start;
2619

    
2620
#if LIBAVCODEC_VERSION_MAJOR < 53
2621
    /**
2622
     * Decoder should decode to this many channels if it can (0 for default)
2623
     * - encoding: unused
2624
     * - decoding: Set by user.
2625
     * @deprecated Deprecated in favor of request_channel_layout.
2626
     */
2627
    int request_channels;
2628
#endif
2629

    
2630
    /**
2631
     * Percentage of dynamic range compression to be applied by the decoder.
2632
     * The default value is 1.0, corresponding to full compression.
2633
     * - encoding: unused
2634
     * - decoding: Set by user.
2635
     */
2636
    float drc_scale;
2637

    
2638
    /**
2639
     * opaque 64bit number (generally a PTS) that will be reordered and
2640
     * output in AVFrame.reordered_opaque
2641
     * @deprecated in favor of pkt_pts
2642
     * - encoding: unused
2643
     * - decoding: Set by user.
2644
     */
2645
    int64_t reordered_opaque;
2646

    
2647
    /**
2648
     * Bits per sample/pixel of internal libavcodec pixel/sample format.
2649
     * This field is applicable only when sample_fmt is AV_SAMPLE_FMT_S32.
2650
     * - encoding: set by user.
2651
     * - decoding: set by libavcodec.
2652
     */
2653
    int bits_per_raw_sample;
2654

    
2655
    /**
2656
     * Audio channel layout.
2657
     * - encoding: set by user.
2658
     * - decoding: set by libavcodec.
2659
     */
2660
    int64_t channel_layout;
2661

    
2662
    /**
2663
     * Request decoder to use this channel layout if it can (0 for default)
2664
     * - encoding: unused
2665
     * - decoding: Set by user.
2666
     */
2667
    int64_t request_channel_layout;
2668

    
2669
    /**
2670
     * Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow.
2671
     * - encoding: Set by user.
2672
     * - decoding: unused.
2673
     */
2674
    float rc_max_available_vbv_use;
2675

    
2676
    /**
2677
     * Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow.
2678
     * - encoding: Set by user.
2679
     * - decoding: unused.
2680
     */
2681
    float rc_min_vbv_overflow_use;
2682

    
2683
    /**
2684
     * Hardware accelerator in use
2685
     * - encoding: unused.
2686
     * - decoding: Set by libavcodec
2687
     */
2688
    struct AVHWAccel *hwaccel;
2689

    
2690
    /**
2691
     * For some codecs, the time base is closer to the field rate than the frame rate.
2692
     * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration
2693
     * if no telecine is used ...
2694
     *
2695
     * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2.
2696
     */
2697
    int ticks_per_frame;
2698

    
2699
    /**
2700
     * Hardware accelerator context.
2701
     * For some hardware accelerators, a global context needs to be
2702
     * provided by the user. In that case, this holds display-dependent
2703
     * data FFmpeg cannot instantiate itself. Please refer to the
2704
     * FFmpeg HW accelerator documentation to know how to fill this
2705
     * is. e.g. for VA API, this is a struct vaapi_context.
2706
     * - encoding: unused
2707
     * - decoding: Set by user
2708
     */
2709
    void *hwaccel_context;
2710

    
2711
    /**
2712
     * Chromaticity coordinates of the source primaries.
2713
     * - encoding: Set by user
2714
     * - decoding: Set by libavcodec
2715
     */
2716
    enum AVColorPrimaries color_primaries;
2717

    
2718
    /**
2719
     * Color Transfer Characteristic.
2720
     * - encoding: Set by user
2721
     * - decoding: Set by libavcodec
2722
     */
2723
    enum AVColorTransferCharacteristic color_trc;
2724

    
2725
    /**
2726
     * YUV colorspace type.
2727
     * - encoding: Set by user
2728
     * - decoding: Set by libavcodec
2729
     */
2730
    enum AVColorSpace colorspace;
2731

    
2732
    /**
2733
     * MPEG vs JPEG YUV range.
2734
     * - encoding: Set by user
2735
     * - decoding: Set by libavcodec
2736
     */
2737
    enum AVColorRange color_range;
2738

    
2739
    /**
2740
     * This defines the location of chroma samples.
2741
     * - encoding: Set by user
2742
     * - decoding: Set by libavcodec
2743
     */
2744
    enum AVChromaLocation chroma_sample_location;
2745

    
2746
    /**
2747
     * The codec may call this to execute several independent things.
2748
     * It will return only after finishing all tasks.
2749
     * The user may replace this with some multithreaded implementation,
2750
     * the default implementation will execute the parts serially.
2751
     * Also see avcodec_thread_init and e.g. the --enable-pthread configure option.
2752
     * @param c context passed also to func
2753
     * @param count the number of things to execute
2754
     * @param arg2 argument passed unchanged to func
2755
     * @param ret return values of executed functions, must have space for "count" values. May be NULL.
2756
     * @param func function that will be called count times, with jobnr from 0 to count-1.
2757
     *             threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no
2758
     *             two instances of func executing at the same time will have the same threadnr.
2759
     * @return always 0 currently, but code should handle a future improvement where when any call to func
2760
     *         returns < 0 no further calls to func may be done and < 0 is returned.
2761
     * - encoding: Set by libavcodec, user can override.
2762
     * - decoding: Set by libavcodec, user can override.
2763
     */
2764
    int (*execute2)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count);
2765

    
2766
    /**
2767
     * explicit P-frame weighted prediction analysis method
2768
     * 0: off
2769
     * 1: fast blind weighting (one reference duplicate with -1 offset)
2770
     * 2: smart weighting (full fade detection analysis)
2771
     * - encoding: Set by user.
2772
     * - decoding: unused
2773
     */
2774
    int weighted_p_pred;
2775

    
2776
    /**
2777
     * AQ mode
2778
     * 0: Disabled
2779
     * 1: Variance AQ (complexity mask)
2780
     * 2: Auto-variance AQ (experimental)
2781
     * - encoding: Set by user
2782
     * - decoding: unused
2783
     */
2784
    int aq_mode;
2785

    
2786
    /**
2787
     * AQ strength
2788
     * Reduces blocking and blurring in flat and textured areas.
2789
     * - encoding: Set by user
2790
     * - decoding: unused
2791
     */
2792
    float aq_strength;
2793

    
2794
    /**
2795
     * PSY RD
2796
     * Strength of psychovisual optimization
2797
     * - encoding: Set by user
2798
     * - decoding: unused
2799
     */
2800
    float psy_rd;
2801

    
2802
    /**
2803
     * PSY trellis
2804
     * Strength of psychovisual optimization
2805
     * - encoding: Set by user
2806
     * - decoding: unused
2807
     */
2808
    float psy_trellis;
2809

    
2810
    /**
2811
     * RC lookahead
2812
     * Number of frames for frametype and ratecontrol lookahead
2813
     * - encoding: Set by user
2814
     * - decoding: unused
2815
     */
2816
    int rc_lookahead;
2817

    
2818
    /**
2819
     * Constant rate factor maximum
2820
     * With CRF encoding mode and VBV restrictions enabled, prevents quality from being worse
2821
     * than crf_max, even if doing so would violate VBV restrictions.
2822
     * - encoding: Set by user.
2823
     * - decoding: unused
2824
     */
2825
    float crf_max;
2826

    
2827
    int log_level_offset;
2828

    
2829
    /**
2830
     * Determines which LPC analysis algorithm to use.
2831
     * - encoding: Set by user
2832
     * - decoding: unused
2833
     */
2834
    enum AVLPCType lpc_type;
2835

    
2836
    /**
2837
     * Number of passes to use for Cholesky factorization during LPC analysis
2838
     * - encoding: Set by user
2839
     * - decoding: unused
2840
     */
2841
    int lpc_passes;
2842

    
2843
    /**
2844
     * Number of slices.
2845
     * Indicates number of picture subdivisions. Used for parallelized
2846
     * decoding.
2847
     * - encoding: Set by user
2848
     * - decoding: unused
2849
     */
2850
    int slices;
2851

    
2852
    /**
2853
     * Header containing style information for text subtitles.
2854
     * For SUBTITLE_ASS subtitle type, it should contain the whole ASS
2855
     * [Script Info] and [V4+ Styles] section, plus the [Events] line and
2856
     * the Format line following. It shouldn't include any Dialogue line.
2857
     * - encoding: Set/allocated/freed by user (before avcodec_open())
2858
     * - decoding: Set/allocated/freed by libavcodec (by avcodec_open())
2859
     */
2860
    uint8_t *subtitle_header;
2861
    int subtitle_header_size;
2862

    
2863
    /**
2864
     * Current packet as passed into the decoder, to avoid having
2865
     * to pass the packet into every function. Currently only valid
2866
     * inside lavc and get/release_buffer callbacks.
2867
     * - decoding: set by avcodec_decode_*, read by get_buffer() for setting pkt_pts
2868
     * - encoding: unused
2869
     */
2870
    AVPacket *pkt;
2871

    
2872
    /**
2873
     * Whether this is a copy of the context which had init() called on it.
2874
     * This is used by multithreading - shared tables and picture pointers
2875
     * should be freed from the original context only.
2876
     * - encoding: Set by libavcodec.
2877
     * - decoding: Set by libavcodec.
2878
     */
2879
    int is_copy;
2880

    
2881
    /**
2882
     * Which multithreading methods to use.
2883
     * Use of FF_THREAD_FRAME will increase decoding delay by one frame per thread,
2884
     * so clients which cannot provide future frames should not use it.
2885
     *
2886
     * - encoding: Set by user, otherwise the default is used.
2887
     * - decoding: Set by user, otherwise the default is used.
2888
     */
2889
    int thread_type;
2890
#define FF_THREAD_FRAME   1 //< Decode more than one frame at once
2891
#define FF_THREAD_SLICE   2 //< Decode more than one part of a single frame at once
2892

    
2893
    /**
2894
     * Which multithreading methods are in use by the codec.
2895
     * - encoding: Set by libavcodec.
2896
     * - decoding: Set by libavcodec.
2897
     */
2898
    int active_thread_type;
2899

    
2900
    /**
2901
     * Set by the client if its custom get_buffer() callback can be called
2902
     * from another thread, which allows faster multithreaded decoding.
2903
     * draw_horiz_band() will be called from other threads regardless of this setting.
2904
     * Ignored if the default get_buffer() is used.
2905
     * - encoding: Set by user.
2906
     * - decoding: Set by user.
2907
     */
2908
    int thread_safe_callbacks;
2909

    
2910
    /**
2911
     * VBV delay coded in the last frame (in periods of a 27 MHz clock).
2912
     * Used for compliant TS muxing.
2913
     * - encoding: Set by libavcodec.
2914
     * - decoding: unused.
2915
     */
2916
    uint64_t vbv_delay;
2917
} AVCodecContext;
2918

    
2919
/**
2920
 * AVProfile.
2921
 */
2922
typedef struct AVProfile {
2923
    int profile;
2924
    const char *name; ///< short name for the profile
2925
} AVProfile;
2926

    
2927
/**
2928
 * AVCodec.
2929
 */
2930
typedef struct AVCodec {
2931
    /**
2932
     * Name of the codec implementation.
2933
     * The name is globally unique among encoders and among decoders (but an
2934
     * encoder and a decoder can share the same name).
2935
     * This is the primary way to find a codec from the user perspective.
2936
     */
2937
    const char *name;
2938
    enum AVMediaType type;
2939
    enum CodecID id;
2940
    int priv_data_size;
2941
    int (*init)(AVCodecContext *);
2942
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2943
    int (*close)(AVCodecContext *);
2944
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt);
2945
    /**
2946
     * Codec capabilities.
2947
     * see CODEC_CAP_*
2948
     */
2949
    int capabilities;
2950
    struct AVCodec *next;
2951
    /**
2952
     * Flush buffers.
2953
     * Will be called when seeking
2954
     */
2955
    void (*flush)(AVCodecContext *);
2956
    const AVRational *supported_framerates; ///< array of supported framerates, or NULL if any, array is terminated by {0,0}
2957
    const enum PixelFormat *pix_fmts;       ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1
2958
    /**
2959
     * Descriptive name for the codec, meant to be more human readable than name.
2960
     * You should use the NULL_IF_CONFIG_SMALL() macro to define it.
2961
     */
2962
    const char *long_name;
2963
    const int *supported_samplerates;       ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0
2964
    const enum AVSampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1
2965
    const int64_t *channel_layouts;         ///< array of support channel layouts, or NULL if unknown. array is terminated by 0
2966
    uint8_t max_lowres;                     ///< maximum value for lowres supported by the decoder
2967
    AVClass *priv_class;                    ///< AVClass for the private context
2968
    const AVProfile *profiles;              ///< array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN}
2969

    
2970
    /**
2971
     * @defgroup framethreading Frame-level threading support functions.
2972
     * @{
2973
     */
2974
    /**
2975
     * If defined, called on thread contexts when they are created.
2976
     * If the codec allocates writable tables in init(), re-allocate them here.
2977
     * priv_data will be set to a copy of the original.
2978
     */
2979
    int (*init_thread_copy)(AVCodecContext *);
2980
    /**
2981
     * Copy necessary context variables from a previous thread context to the current one.
2982
     * If not defined, the next thread will start automatically; otherwise, the codec
2983
     * must call ff_thread_finish_setup().
2984
     *
2985
     * dst and src will (rarely) point to the same context, in which case memcpy should be skipped.
2986
     */
2987
    int (*update_thread_context)(AVCodecContext *dst, const AVCodecContext *src);
2988
    /** @} */
2989
} AVCodec;
2990

    
2991
/**
2992
 * AVHWAccel.
2993
 */
2994
typedef struct AVHWAccel {
2995
    /**
2996
     * Name of the hardware accelerated codec.
2997
     * The name is globally unique among encoders and among decoders (but an
2998
     * encoder and a decoder can share the same name).
2999
     */
3000
    const char *name;
3001

    
3002
    /**
3003
     * Type of codec implemented by the hardware accelerator.
3004
     *
3005
     * See AVMEDIA_TYPE_xxx
3006
     */
3007
    enum AVMediaType type;
3008

    
3009
    /**
3010
     * Codec implemented by the hardware accelerator.
3011
     *
3012
     * See CODEC_ID_xxx
3013
     */
3014
    enum CodecID id;
3015

    
3016
    /**
3017
     * Supported pixel format.
3018
     *
3019
     * Only hardware accelerated formats are supported here.
3020
     */
3021
    enum PixelFormat pix_fmt;
3022

    
3023
    /**
3024
     * Hardware accelerated codec capabilities.
3025
     * see FF_HWACCEL_CODEC_CAP_*
3026
     */
3027
    int capabilities;
3028

    
3029
    struct AVHWAccel *next;
3030

    
3031
    /**
3032
     * Called at the beginning of each frame or field picture.
3033
     *
3034
     * Meaningful frame information (codec specific) is guaranteed to
3035
     * be parsed at this point. This function is mandatory.
3036
     *
3037
     * Note that buf can be NULL along with buf_size set to 0.
3038
     * Otherwise, this means the whole frame is available at this point.
3039
     *
3040
     * @param avctx the codec context
3041
     * @param buf the frame data buffer base
3042
     * @param buf_size the size of the frame in bytes
3043
     * @return zero if successful, a negative value otherwise
3044
     */
3045
    int (*start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
3046

    
3047
    /**
3048
     * Callback for each slice.
3049
     *
3050
     * Meaningful slice information (codec specific) is guaranteed to
3051
     * be parsed at this point. This function is mandatory.
3052
     *
3053
     * @param avctx the codec context
3054
     * @param buf the slice data buffer base
3055
     * @param buf_size the size of the slice in bytes
3056
     * @return zero if successful, a negative value otherwise
3057
     */
3058
    int (*decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
3059

    
3060
    /**
3061
     * Called at the end of each frame or field picture.
3062
     *
3063
     * The whole picture is parsed at this point and can now be sent
3064
     * to the hardware accelerator. This function is mandatory.
3065
     *
3066
     * @param avctx the codec context
3067
     * @return zero if successful, a negative value otherwise
3068
     */
3069
    int (*end_frame)(AVCodecContext *avctx);
3070

    
3071
    /**
3072
     * Size of HW accelerator private data.
3073
     *
3074
     * Private data is allocated with av_mallocz() before
3075
     * AVCodecContext.get_buffer() and deallocated after
3076
     * AVCodecContext.release_buffer().
3077
     */
3078
    int priv_data_size;
3079
} AVHWAccel;
3080

    
3081
/**
3082
 * four components are given, that's all.
3083
 * the last component is alpha
3084
 */
3085
typedef struct AVPicture {
3086
    uint8_t *data[4];
3087
    int linesize[4];       ///< number of bytes per line
3088
} AVPicture;
3089

    
3090
#if FF_API_PALETTE_CONTROL
3091
/**
3092
 * AVPaletteControl
3093
 * This structure defines a method for communicating palette changes
3094
 * between and demuxer and a decoder.
3095
 *
3096
 * @deprecated Use AVPacket to send palette changes instead.
3097
 * This is totally broken.
3098
 */
3099
#define AVPALETTE_SIZE 1024
3100
#define AVPALETTE_COUNT 256
3101
typedef struct AVPaletteControl {
3102

    
3103
    /* Demuxer sets this to 1 to indicate the palette has changed;
3104
     * decoder resets to 0. */
3105
    int palette_changed;
3106

    
3107
    /* 4-byte ARGB palette entries, stored in native byte order; note that
3108
     * the individual palette components should be on a 8-bit scale; if
3109
     * the palette data comes from an IBM VGA native format, the component
3110
     * data is probably 6 bits in size and needs to be scaled. */
3111
    unsigned int palette[AVPALETTE_COUNT];
3112

    
3113
} AVPaletteControl attribute_deprecated;
3114
#endif
3115

    
3116
enum AVSubtitleType {
3117
    SUBTITLE_NONE,
3118

    
3119
    SUBTITLE_BITMAP,                ///< A bitmap, pict will be set
3120

    
3121
    /**
3122
     * Plain text, the text field must be set by the decoder and is
3123
     * authoritative. ass and pict fields may contain approximations.
3124
     */
3125
    SUBTITLE_TEXT,
3126

    
3127
    /**
3128
     * Formatted text, the ass field must be set by the decoder and is
3129
     * authoritative. pict and text fields may contain approximations.
3130
     */
3131
    SUBTITLE_ASS,
3132
};
3133

    
3134
typedef struct AVSubtitleRect {
3135
    int x;         ///< top left corner  of pict, undefined when pict is not set
3136
    int y;         ///< top left corner  of pict, undefined when pict is not set
3137
    int w;         ///< width            of pict, undefined when pict is not set
3138
    int h;         ///< height           of pict, undefined when pict is not set
3139
    int nb_colors; ///< number of colors in pict, undefined when pict is not set
3140

    
3141
    /**
3142
     * data+linesize for the bitmap of this subtitle.
3143
     * can be set for text/ass as well once they where rendered
3144
     */
3145
    AVPicture pict;
3146
    enum AVSubtitleType type;
3147

    
3148
    char *text;                     ///< 0 terminated plain UTF-8 text
3149

    
3150
    /**
3151
     * 0 terminated ASS/SSA compatible event line.
3152
     * The pressentation of this is unaffected by the other values in this
3153
     * struct.
3154
     */
3155
    char *ass;
3156
} AVSubtitleRect;
3157

    
3158
typedef struct AVSubtitle {
3159
    uint16_t format; /* 0 = graphics */
3160
    uint32_t start_display_time; /* relative to packet pts, in ms */
3161
    uint32_t end_display_time; /* relative to packet pts, in ms */
3162
    unsigned num_rects;
3163
    AVSubtitleRect **rects;
3164
    int64_t pts;    ///< Same as packet pts, in AV_TIME_BASE
3165
} AVSubtitle;
3166

    
3167
/* packet functions */
3168

    
3169
/**
3170
 * @deprecated use NULL instead
3171
 */
3172
attribute_deprecated void av_destruct_packet_nofree(AVPacket *pkt);
3173

    
3174
/**
3175
 * Default packet destructor.
3176
 */
3177
void av_destruct_packet(AVPacket *pkt);
3178

    
3179
/**
3180
 * Initialize optional fields of a packet with default values.
3181
 *
3182
 * @param pkt packet
3183
 */
3184
void av_init_packet(AVPacket *pkt);
3185

    
3186
/**
3187
 * Allocate the payload of a packet and initialize its fields with
3188
 * default values.
3189
 *
3190
 * @param pkt packet
3191
 * @param size wanted payload size
3192
 * @return 0 if OK, AVERROR_xxx otherwise
3193
 */
3194
int av_new_packet(AVPacket *pkt, int size);
3195

    
3196
/**
3197
 * Reduce packet size, correctly zeroing padding
3198
 *
3199
 * @param pkt packet
3200
 * @param size new size
3201
 */
3202
void av_shrink_packet(AVPacket *pkt, int size);
3203

    
3204
/**
3205
 * Increase packet size, correctly zeroing padding
3206
 *
3207
 * @param pkt packet
3208
 * @param grow_by number of bytes by which to increase the size of the packet
3209
 */
3210
int av_grow_packet(AVPacket *pkt, int grow_by);
3211

    
3212
/**
3213
 * @warning This is a hack - the packet memory allocation stuff is broken. The
3214
 * packet is allocated if it was not really allocated.
3215
 */
3216
int av_dup_packet(AVPacket *pkt);
3217

    
3218
/**
3219
 * Free a packet.
3220
 *
3221
 * @param pkt packet to free
3222
 */
3223
void av_free_packet(AVPacket *pkt);
3224

    
3225
/* resample.c */
3226

    
3227
struct ReSampleContext;
3228
struct AVResampleContext;
3229

    
3230
typedef struct ReSampleContext ReSampleContext;
3231

    
3232
#if FF_API_AUDIO_OLD
3233
/**
3234
 * @deprecated Use av_audio_resample_init() instead.
3235
 */
3236
attribute_deprecated ReSampleContext *audio_resample_init(int output_channels, int input_channels,
3237
                                                          int output_rate, int input_rate);
3238
#endif
3239

    
3240
/**
3241
 *  Initialize audio resampling context.
3242
 *
3243
 * @param output_channels  number of output channels
3244
 * @param input_channels   number of input channels
3245
 * @param output_rate      output sample rate
3246
 * @param input_rate       input sample rate
3247
 * @param sample_fmt_out   requested output sample format
3248
 * @param sample_fmt_in    input sample format
3249
 * @param filter_length    length of each FIR filter in the filterbank relative to the cutoff frequency
3250
 * @param log2_phase_count log2 of the number of entries in the polyphase filterbank
3251
 * @param linear           if 1 then the used FIR filter will be linearly interpolated
3252
                           between the 2 closest, if 0 the closest will be used
3253
 * @param cutoff           cutoff frequency, 1.0 corresponds to half the output sampling rate
3254
 * @return allocated ReSampleContext, NULL if error occured
3255
 */
3256
ReSampleContext *av_audio_resample_init(int output_channels, int input_channels,
3257
                                        int output_rate, int input_rate,
3258
                                        enum AVSampleFormat sample_fmt_out,
3259
                                        enum AVSampleFormat sample_fmt_in,
3260
                                        int filter_length, int log2_phase_count,
3261
                                        int linear, double cutoff);
3262

    
3263
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
3264

    
3265
/**
3266
 * Free resample context.
3267
 *
3268
 * @param s a non-NULL pointer to a resample context previously
3269
 *          created with av_audio_resample_init()
3270
 */
3271
void audio_resample_close(ReSampleContext *s);
3272

    
3273

    
3274
/**
3275
 * Initialize an audio resampler.
3276
 * Note, if either rate is not an integer then simply scale both rates up so they are.
3277
 * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq
3278
 * @param log2_phase_count log2 of the number of entries in the polyphase filterbank
3279
 * @param linear If 1 then the used FIR filter will be linearly interpolated
3280
                 between the 2 closest, if 0 the closest will be used
3281
 * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate
3282
 */
3283
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
3284

    
3285
/**
3286
 * Resample an array of samples using a previously configured context.
3287
 * @param src an array of unconsumed samples
3288
 * @param consumed the number of samples of src which have been consumed are returned here
3289
 * @param src_size the number of unconsumed samples available
3290
 * @param dst_size the amount of space in samples available in dst
3291
 * @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.
3292
 * @return the number of samples written in dst or -1 if an error occurred
3293
 */
3294
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
3295

    
3296

    
3297
/**
3298
 * Compensate samplerate/timestamp drift. The compensation is done by changing
3299
 * the resampler parameters, so no audible clicks or similar distortions occur
3300
 * @param compensation_distance distance in output samples over which the compensation should be performed
3301
 * @param sample_delta number of output samples which should be output less
3302
 *
3303
 * example: av_resample_compensate(c, 10, 500)
3304
 * here instead of 510 samples only 500 samples would be output
3305
 *
3306
 * note, due to rounding the actual compensation might be slightly different,
3307
 * especially if the compensation_distance is large and the in_rate used during init is small
3308
 */
3309
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
3310
void av_resample_close(struct AVResampleContext *c);
3311

    
3312
/**
3313
 * Allocate memory for a picture.  Call avpicture_free to free it.
3314
 *
3315
 * @param picture the picture to be filled in
3316
 * @param pix_fmt the format of the picture
3317
 * @param width the width of the picture
3318
 * @param height the height of the picture
3319
 * @return zero if successful, a negative value if not
3320
 */
3321
int avpicture_alloc(AVPicture *picture, enum PixelFormat pix_fmt, int width, int height);
3322

    
3323
/**
3324
 * Free a picture previously allocated by avpicture_alloc().
3325
 *
3326
 * @param picture the AVPicture to be freed
3327
 */
3328
void avpicture_free(AVPicture *picture);
3329

    
3330
/**
3331
 * Fill in the AVPicture fields.
3332
 * The fields of the given AVPicture are filled in by using the 'ptr' address
3333
 * which points to the image data buffer. Depending on the specified picture
3334
 * format, one or multiple image data pointers and line sizes will be set.
3335
 * If a planar format is specified, several pointers will be set pointing to
3336
 * the different picture planes and the line sizes of the different planes
3337
 * will be stored in the lines_sizes array.
3338
 * Call with ptr == NULL to get the required size for the ptr buffer.
3339
 *
3340
 * @param picture AVPicture whose fields are to be filled in
3341
 * @param ptr Buffer which will contain or contains the actual image data
3342
 * @param pix_fmt The format in which the picture data is stored.
3343
 * @param width the width of the image in pixels
3344
 * @param height the height of the image in pixels
3345
 * @return size of the image data in bytes
3346
 */
3347
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
3348
                   enum PixelFormat pix_fmt, int width, int height);
3349
int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
3350
                     unsigned char *dest, int dest_size);
3351

    
3352
/**
3353
 * Calculate the size in bytes that a picture of the given width and height
3354
 * would occupy if stored in the given picture format.
3355
 * Note that this returns the size of a compact representation as generated
3356
 * by avpicture_layout, which can be smaller than the size required for e.g.
3357
 * avpicture_fill.
3358
 *
3359
 * @param pix_fmt the given picture format
3360
 * @param width the width of the image
3361
 * @param height the height of the image
3362
 * @return Image data size in bytes or -1 on error (e.g. too large dimensions).
3363
 */
3364
int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height);
3365
void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift);
3366
const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt);
3367
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
3368

    
3369
#if LIBAVCODEC_VERSION_MAJOR < 53
3370
/**
3371
 * Return the pixel format corresponding to the name name.
3372
 *
3373
 * If there is no pixel format with name name, then look for a
3374
 * pixel format with the name corresponding to the native endian
3375
 * format of name.
3376
 * For example in a little-endian system, first look for "gray16",
3377
 * then for "gray16le".
3378
 *
3379
 * Finally if no pixel format has been found, return PIX_FMT_NONE.
3380
 *
3381
 * @deprecated Deprecated in favor of av_get_pix_fmt().
3382
 */
3383
attribute_deprecated enum PixelFormat avcodec_get_pix_fmt(const char* name);
3384
#endif
3385

    
3386
/**
3387
 * Return a value representing the fourCC code associated to the
3388
 * pixel format pix_fmt, or 0 if no associated fourCC code can be
3389
 * found.
3390
 */
3391
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat pix_fmt);
3392

    
3393
/**
3394
 * Put a string representing the codec tag codec_tag in buf.
3395
 *
3396
 * @param buf_size size in bytes of buf
3397
 * @return the length of the string that would have been generated if
3398
 * enough space had been available, excluding the trailing null
3399
 */
3400
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag);
3401

    
3402
#define FF_LOSS_RESOLUTION  0x0001 /**< loss due to resolution change */
3403
#define FF_LOSS_DEPTH       0x0002 /**< loss due to color depth change */
3404
#define FF_LOSS_COLORSPACE  0x0004 /**< loss due to color space conversion */
3405
#define FF_LOSS_ALPHA       0x0008 /**< loss of alpha bits */
3406
#define FF_LOSS_COLORQUANT  0x0010 /**< loss due to color quantization */
3407
#define FF_LOSS_CHROMA      0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */
3408

    
3409
/**
3410
 * Compute what kind of losses will occur when converting from one specific
3411
 * pixel format to another.
3412
 * When converting from one pixel format to another, information loss may occur.
3413
 * For example, when converting from RGB24 to GRAY, the color information will
3414
 * be lost. Similarly, other losses occur when converting from some formats to
3415
 * other formats. These losses can involve loss of chroma, but also loss of
3416
 * resolution, loss of color depth, loss due to the color space conversion, loss
3417
 * of the alpha bits or loss due to color quantization.
3418
 * avcodec_get_fix_fmt_loss() informs you about the various types of losses
3419
 * which will occur when converting from one pixel format to another.
3420
 *
3421
 * @param[in] dst_pix_fmt destination pixel format
3422
 * @param[in] src_pix_fmt source pixel format
3423
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
3424
 * @return Combination of flags informing you what kind of losses will occur.
3425
 */
3426
int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
3427
                             int has_alpha);
3428

    
3429
/**
3430
 * Find the best pixel format to convert to given a certain source pixel
3431
 * format.  When converting from one pixel format to another, information loss
3432
 * may occur.  For example, when converting from RGB24 to GRAY, the color
3433
 * information will be lost. Similarly, other losses occur when converting from
3434
 * some formats to other formats. avcodec_find_best_pix_fmt() searches which of
3435
 * the given pixel formats should be used to suffer the least amount of loss.
3436
 * The pixel formats from which it chooses one, are determined by the
3437
 * pix_fmt_mask parameter.
3438
 *
3439
 * @code
3440
 * src_pix_fmt = PIX_FMT_YUV420P;
3441
 * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24);
3442
 * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss);
3443
 * @endcode
3444
 *
3445
 * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from
3446
 * @param[in] src_pix_fmt source pixel format
3447
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
3448
 * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
3449
 * @return The best pixel format to convert to or -1 if none was found.
3450
 */
3451
enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
3452
                              int has_alpha, int *loss_ptr);
3453

    
3454
#if LIBAVCODEC_VERSION_MAJOR < 53
3455
/**
3456
 * @deprecated Use av_get_pix_fmt_string() instead.
3457
 */
3458
attribute_deprecated
3459
void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt);
3460
#endif
3461

    
3462
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
3463
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
3464

    
3465
/**
3466
 * Tell if an image really has transparent alpha values.
3467
 * @return ored mask of FF_ALPHA_xxx constants
3468
 */
3469
int img_get_alpha_info(const AVPicture *src,
3470
                       enum PixelFormat pix_fmt, int width, int height);
3471

    
3472
/* deinterlace a picture */
3473
/* deinterlace - if not supported return -1 */
3474
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
3475
                          enum PixelFormat pix_fmt, int width, int height);
3476

    
3477
/* external high level API */
3478

    
3479
/**
3480
 * If c is NULL, returns the first registered codec,
3481
 * if c is non-NULL, returns the next registered codec after c,
3482
 * or NULL if c is the last one.
3483
 */
3484
AVCodec *av_codec_next(AVCodec *c);
3485

    
3486
/**
3487
 * Return the LIBAVCODEC_VERSION_INT constant.
3488
 */
3489
unsigned avcodec_version(void);
3490

    
3491
/**
3492
 * Return the libavcodec build-time configuration.
3493
 */
3494
const char *avcodec_configuration(void);
3495

    
3496
/**
3497
 * Return the libavcodec license.
3498
 */
3499
const char *avcodec_license(void);
3500

    
3501
/**
3502
 * Initialize libavcodec.
3503
 *
3504
 * @warning This function must be called before any other libavcodec
3505
 * function.
3506
 */
3507
void avcodec_init(void);
3508

    
3509
#if LIBAVCODEC_VERSION_MAJOR < 53
3510
/**
3511
 * @deprecated Deprecated in favor of avcodec_register().
3512
 */
3513
attribute_deprecated void register_avcodec(AVCodec *codec);
3514
#endif
3515

    
3516
/**
3517
 * Register the codec codec and initialize libavcodec.
3518
 *
3519
 * @see avcodec_init()
3520
 */
3521
void avcodec_register(AVCodec *codec);
3522

    
3523
/**
3524
 * Find a registered encoder with a matching codec ID.
3525
 *
3526
 * @param id CodecID of the requested encoder
3527
 * @return An encoder if one was found, NULL otherwise.
3528
 */
3529
AVCodec *avcodec_find_encoder(enum CodecID id);
3530

    
3531
/**
3532
 * Find a registered encoder with the specified name.
3533
 *
3534
 * @param name name of the requested encoder
3535
 * @return An encoder if one was found, NULL otherwise.
3536
 */
3537
AVCodec *avcodec_find_encoder_by_name(const char *name);
3538

    
3539
/**
3540
 * Find a registered decoder with a matching codec ID.
3541
 *
3542
 * @param id CodecID of the requested decoder
3543
 * @return A decoder if one was found, NULL otherwise.
3544
 */
3545
AVCodec *avcodec_find_decoder(enum CodecID id);
3546

    
3547
/**
3548
 * Find a registered decoder with the specified name.
3549
 *
3550
 * @param name name of the requested decoder
3551
 * @return A decoder if one was found, NULL otherwise.
3552
 */
3553
AVCodec *avcodec_find_decoder_by_name(const char *name);
3554
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
3555

    
3556
/**
3557
 * Return a name for the specified profile, if available.
3558
 *
3559
 * @param codec the codec that is searched for the given profile
3560
 * @param profile the profile value for which a name is requested
3561
 * @return A name for the profile if found, NULL otherwise.
3562
 */
3563
const char *av_get_profile_name(const AVCodec *codec, int profile);
3564

    
3565
/**
3566
 * Set the fields of the given AVCodecContext to default values.
3567
 *
3568
 * @param s The AVCodecContext of which the fields should be set to default values.
3569
 */
3570
void avcodec_get_context_defaults(AVCodecContext *s);
3571

    
3572
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
3573
 *  we WILL change its arguments and name a few times! */
3574
void avcodec_get_context_defaults2(AVCodecContext *s, enum AVMediaType);
3575

    
3576
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
3577
 *  we WILL change its arguments and name a few times! */
3578
int avcodec_get_context_defaults3(AVCodecContext *s, AVCodec *codec);
3579

    
3580
/**
3581
 * Allocate an AVCodecContext and set its fields to default values.  The
3582
 * resulting struct can be deallocated by simply calling av_free().
3583
 *
3584
 * @return An AVCodecContext filled with default values or NULL on failure.
3585
 * @see avcodec_get_context_defaults
3586
 */
3587
AVCodecContext *avcodec_alloc_context(void);
3588

    
3589
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
3590
 *  we WILL change its arguments and name a few times! */
3591
AVCodecContext *avcodec_alloc_context2(enum AVMediaType);
3592

    
3593
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
3594
 *  we WILL change its arguments and name a few times! */
3595
AVCodecContext *avcodec_alloc_context3(AVCodec *codec);
3596

    
3597
/**
3598
 * Copy the settings of the source AVCodecContext into the destination
3599
 * AVCodecContext. The resulting destination codec context will be
3600
 * unopened, i.e. you are required to call avcodec_open() before you
3601
 * can use this AVCodecContext to decode/encode video/audio data.
3602
 *
3603
 * @param dest target codec context, should be initialized with
3604
 *             avcodec_alloc_context(), but otherwise uninitialized
3605
 * @param src source codec context
3606
 * @return AVERROR() on error (e.g. memory allocation error), 0 on success
3607
 */
3608
int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src);
3609

    
3610
/**
3611
 * Set the fields of the given AVFrame to default values.
3612
 *
3613
 * @param pic The AVFrame of which the fields should be set to default values.
3614
 */
3615
void avcodec_get_frame_defaults(AVFrame *pic);
3616

    
3617
/**
3618
 * Allocate an AVFrame and set its fields to default values.  The resulting
3619
 * struct can be deallocated by simply calling av_free().
3620
 *
3621
 * @return An AVFrame filled with default values or NULL on failure.
3622
 * @see avcodec_get_frame_defaults
3623
 */
3624
AVFrame *avcodec_alloc_frame(void);
3625

    
3626
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
3627
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
3628
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
3629

    
3630
/**
3631
 * Return the amount of padding in pixels which the get_buffer callback must
3632
 * provide around the edge of the image for codecs which do not have the
3633
 * CODEC_FLAG_EMU_EDGE flag.
3634
 *
3635
 * @return Required padding in pixels.
3636
 */
3637
unsigned avcodec_get_edge_width(void);
3638
/**
3639
 * Modify width and height values so that they will result in a memory
3640
 * buffer that is acceptable for the codec if you do not use any horizontal
3641
 * padding.
3642
 *
3643
 * May only be used if a codec with CODEC_CAP_DR1 has been opened.
3644
 * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased
3645
 * according to avcodec_get_edge_width() before.
3646
 */
3647
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
3648
/**
3649
 * Modify width and height values so that they will result in a memory
3650
 * buffer that is acceptable for the codec if you also ensure that all
3651
 * line sizes are a multiple of the respective linesize_align[i].
3652
 *
3653
 * May only be used if a codec with CODEC_CAP_DR1 has been opened.
3654
 * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased
3655
 * according to avcodec_get_edge_width() before.
3656
 */
3657
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
3658
                               int linesize_align[4]);
3659

    
3660
#if LIBAVCODEC_VERSION_MAJOR < 53
3661
/**
3662
 * @deprecated Deprecated in favor of av_check_image_size().
3663
 */
3664
attribute_deprecated
3665
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
3666
#endif
3667

    
3668
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
3669

    
3670
#if LIBAVCODEC_VERSION_MAJOR < 53
3671
/**
3672
 * @deprecated Set s->thread_count before calling avcodec_open() instead of calling this.
3673
 */
3674
attribute_deprecated
3675
int avcodec_thread_init(AVCodecContext *s, int thread_count);
3676
void avcodec_thread_free(AVCodecContext *s);
3677
#endif
3678
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size);
3679
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int, int),void *arg, int *ret, int count);
3680
//FIXME func typedef
3681

    
3682
/**
3683
 * Initialize the AVCodecContext to use the given AVCodec. Prior to using this
3684
 * function the context has to be allocated.
3685
 *
3686
 * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
3687
 * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
3688
 * retrieving a codec.
3689
 *
3690
 * @warning This function is not thread safe!
3691
 *
3692
 * @code
3693
 * avcodec_register_all();
3694
 * codec = avcodec_find_decoder(CODEC_ID_H264);
3695
 * if (!codec)
3696
 *     exit(1);
3697
 *
3698
 * context = avcodec_alloc_context();
3699
 *
3700
 * if (avcodec_open(context, codec) < 0)
3701
 *     exit(1);
3702
 * @endcode
3703
 *
3704
 * @param avctx The context which will be set up to use the given codec.
3705
 * @param codec The codec to use within the context.
3706
 * @return zero on success, a negative value on error
3707
 * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder
3708
 */
3709
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
3710

    
3711
#if FF_API_AUDIO_OLD
3712
/**
3713
 * Decode an audio frame from buf into samples.
3714
 * Wrapper function which calls avcodec_decode_audio3.
3715
 *
3716
 * @deprecated Use avcodec_decode_audio3 instead.
3717
 * @param avctx the codec context
3718
 * @param[out] samples the output buffer
3719
 * @param[in,out] frame_size_ptr the output buffer size in bytes
3720
 * @param[in] buf the input buffer
3721
 * @param[in] buf_size the input buffer size in bytes
3722
 * @return On error a negative value is returned, otherwise the number of bytes
3723
 * used or zero if no frame could be decompressed.
3724
 */
3725
attribute_deprecated int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
3726
                         int *frame_size_ptr,
3727
                         const uint8_t *buf, int buf_size);
3728
#endif
3729

    
3730
/**
3731
 * Decode the audio frame of size avpkt->size from avpkt->data into samples.
3732
 * Some decoders may support multiple frames in a single AVPacket, such
3733
 * decoders would then just decode the first frame. In this case,
3734
 * avcodec_decode_audio3 has to be called again with an AVPacket that contains
3735
 * the remaining data in order to decode the second frame etc.
3736
 * If no frame
3737
 * could be outputted, frame_size_ptr is zero. Otherwise, it is the
3738
 * decompressed frame size in bytes.
3739
 *
3740
 * @warning You must set frame_size_ptr to the allocated size of the
3741
 * output buffer before calling avcodec_decode_audio3().
3742
 *
3743
 * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than
3744
 * the actual read bytes because some optimized bitstream readers read 32 or 64
3745
 * bits at once and could read over the end.
3746
 *
3747
 * @warning The end of the input buffer avpkt->data should be set to 0 to ensure that
3748
 * no overreading happens for damaged MPEG streams.
3749
 *
3750
 * @note You might have to align the input buffer avpkt->data and output buffer
3751
 * samples. The alignment requirements depend on the CPU: On some CPUs it isn't
3752
 * necessary at all, on others it won't work at all if not aligned and on others
3753
 * it will work but it will have an impact on performance.
3754
 *
3755
 * In practice, avpkt->data should have 4 byte alignment at minimum and
3756
 * samples should be 16 byte aligned unless the CPU doesn't need it
3757
 * (AltiVec and SSE do).
3758
 *
3759
 * @param avctx the codec context
3760
 * @param[out] samples the output buffer, sample type in avctx->sample_fmt
3761
 * @param[in,out] frame_size_ptr the output buffer size in bytes
3762
 * @param[in] avpkt The input AVPacket containing the input buffer.
3763
 *            You can create such packet with av_init_packet() and by then setting
3764
 *            data and size, some decoders might in addition need other fields.
3765
 *            All decoders are designed to use the least fields possible though.
3766
 * @return On error a negative value is returned, otherwise the number of bytes
3767
 * used or zero if no frame data was decompressed (used) from the input AVPacket.
3768
 */
3769
int avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
3770
                         int *frame_size_ptr,
3771
                         AVPacket *avpkt);
3772

    
3773
#if FF_API_VIDEO_OLD
3774
/**
3775
 * Decode a video frame from buf into picture.
3776
 * Wrapper function which calls avcodec_decode_video2.
3777
 *
3778
 * @deprecated Use avcodec_decode_video2 instead.
3779
 * @param avctx the codec context
3780
 * @param[out] picture The AVFrame in which the decoded video frame will be stored.
3781
 * @param[in] buf the input buffer
3782
 * @param[in] buf_size the size of the input buffer in bytes
3783
 * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
3784
 * @return On error a negative value is returned, otherwise the number of bytes
3785
 * used or zero if no frame could be decompressed.
3786
 */
3787
attribute_deprecated int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
3788
                         int *got_picture_ptr,
3789
                         const uint8_t *buf, int buf_size);
3790
#endif
3791

    
3792
/**
3793
 * Decode the video frame of size avpkt->size from avpkt->data into picture.
3794
 * Some decoders may support multiple frames in a single AVPacket, such
3795
 * decoders would then just decode the first frame.
3796
 *
3797
 * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than
3798
 * the actual read bytes because some optimized bitstream readers read 32 or 64
3799
 * bits at once and could read over the end.
3800
 *
3801
 * @warning The end of the input buffer buf should be set to 0 to ensure that
3802
 * no overreading happens for damaged MPEG streams.
3803
 *
3804
 * @note You might have to align the input buffer avpkt->data.
3805
 * The alignment requirements depend on the CPU: on some CPUs it isn't
3806
 * necessary at all, on others it won't work at all if not aligned and on others
3807
 * it will work but it will have an impact on performance.
3808
 *
3809
 * In practice, avpkt->data should have 4 byte alignment at minimum.
3810
 *
3811
 * @note Some codecs have a delay between input and output, these need to be
3812
 * fed with avpkt->data=NULL, avpkt->size=0 at the end to return the remaining frames.
3813
 *
3814
 * @param avctx the codec context
3815
 * @param[out] picture The AVFrame in which the decoded video frame will be stored.
3816
 *             Use avcodec_alloc_frame to get an AVFrame, the codec will
3817
 *             allocate memory for the actual bitmap.
3818
 *             with default get/release_buffer(), the decoder frees/reuses the bitmap as it sees fit.
3819
 *             with overridden get/release_buffer() (needs CODEC_CAP_DR1) the user decides into what buffer the decoder
3820
 *                   decodes and the decoder tells the user once it does not need the data anymore,
3821
 *                   the user app can at this point free/reuse/keep the memory as it sees fit.
3822
 *
3823
 * @param[in] avpkt The input AVpacket containing the input buffer.
3824
 *            You can create such packet with av_init_packet() and by then setting
3825
 *            data and size, some decoders might in addition need other fields like
3826
 *            flags&AV_PKT_FLAG_KEY. All decoders are designed to use the least
3827
 *            fields possible.
3828
 * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
3829
 * @return On error a negative value is returned, otherwise the number of bytes
3830
 * used or zero if no frame could be decompressed.
3831
 */
3832
int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
3833
                         int *got_picture_ptr,
3834
                         AVPacket *avpkt);
3835

    
3836
#if FF_API_SUBTITLE_OLD
3837
/* Decode a subtitle message. Return -1 if error, otherwise return the
3838
 * number of bytes used. If no subtitle could be decompressed,
3839
 * got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
3840
attribute_deprecated int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
3841
                            int *got_sub_ptr,
3842
                            const uint8_t *buf, int buf_size);
3843
#endif
3844

    
3845
/**
3846
 * Decode a subtitle message.
3847
 * Return a negative value on error, otherwise return the number of bytes used.
3848
 * If no subtitle could be decompressed, got_sub_ptr is zero.
3849
 * Otherwise, the subtitle is stored in *sub.
3850
 * Note that CODEC_CAP_DR1 is not available for subtitle codecs. This is for
3851
 * simplicity, because the performance difference is expect to be negligible
3852
 * and reusing a get_buffer written for video codecs would probably perform badly
3853
 * due to a potentially very different allocation pattern.
3854
 *
3855
 * @param avctx the codec context
3856
 * @param[out] sub The AVSubtitle in which the decoded subtitle will be stored, must be
3857
                   freed with avsubtitle_free if *got_sub_ptr is set.
3858
 * @param[in,out] got_sub_ptr Zero if no subtitle could be decompressed, otherwise, it is nonzero.
3859
 * @param[in] avpkt The input AVPacket containing the input buffer.
3860
 */
3861
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
3862
                            int *got_sub_ptr,
3863
                            AVPacket *avpkt);
3864

    
3865
/**
3866
 * Frees all allocated data in the given subtitle struct.
3867
 *
3868
 * @param sub AVSubtitle to free.
3869
 */
3870
void avsubtitle_free(AVSubtitle *sub);
3871

    
3872
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
3873
                        int *data_size_ptr,
3874
                        uint8_t *buf, int buf_size);
3875

    
3876
/**
3877
 * Encode an audio frame from samples into buf.
3878
 *
3879
 * @note The output buffer should be at least FF_MIN_BUFFER_SIZE bytes large.
3880
 * However, for PCM audio the user will know how much space is needed
3881
 * because it depends on the value passed in buf_size as described
3882
 * below. In that case a lower value can be used.
3883
 *
3884
 * @param avctx the codec context
3885
 * @param[out] buf the output buffer
3886
 * @param[in] buf_size the output buffer size
3887
 * @param[in] samples the input buffer containing the samples
3888
 * The number of samples read from this buffer is frame_size*channels,
3889
 * both of which are defined in avctx.
3890
 * For PCM audio the number of samples read from samples is equal to
3891
 * buf_size * input_sample_size / output_sample_size.
3892
 * @return On error a negative value is returned, on success zero or the number
3893
 * of bytes used to encode the data read from the input buffer.
3894
 */
3895
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
3896
                         const short *samples);
3897

    
3898
/**
3899
 * Encode a video frame from pict into buf.
3900
 * The input picture should be
3901
 * stored using a specific format, namely avctx.pix_fmt.
3902
 *
3903
 * @param avctx the codec context
3904
 * @param[out] buf the output buffer for the bitstream of encoded frame
3905
 * @param[in] buf_size the size of the output buffer in bytes
3906
 * @param[in] pict the input picture to encode
3907
 * @return On error a negative value is returned, on success zero or the number
3908
 * of bytes used from the output buffer.
3909
 */
3910
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
3911
                         const AVFrame *pict);
3912
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
3913
                            const AVSubtitle *sub);
3914

    
3915
int avcodec_close(AVCodecContext *avctx);
3916

    
3917
/**
3918
 * Register all the codecs, parsers and bitstream filters which were enabled at
3919
 * configuration time. If you do not call this function you can select exactly
3920
 * which formats you want to support, by using the individual registration
3921
 * functions.
3922
 *
3923
 * @see avcodec_register
3924
 * @see av_register_codec_parser
3925
 * @see av_register_bitstream_filter
3926
 */
3927
void avcodec_register_all(void);
3928

    
3929
/**
3930
 * Flush buffers, should be called when seeking or when switching to a different stream.
3931
 */
3932
void avcodec_flush_buffers(AVCodecContext *avctx);
3933

    
3934
void avcodec_default_free_buffers(AVCodecContext *s);
3935

    
3936
/* misc useful functions */
3937

    
3938
/**
3939
 * Return a single letter to describe the given picture type pict_type.
3940
 *
3941
 * @param[in] pict_type the picture type
3942
 * @return A single character representing the picture type.
3943
 */
3944
char av_get_pict_type_char(int pict_type);
3945

    
3946
/**
3947
 * Return codec bits per sample.
3948
 *
3949
 * @param[in] codec_id the codec
3950
 * @return Number of bits per sample or zero if unknown for the given codec.
3951
 */
3952
int av_get_bits_per_sample(enum CodecID codec_id);
3953

    
3954
#if FF_API_OLD_SAMPLE_FMT
3955
/**
3956
 * @deprecated Use av_get_bits_per_sample_fmt() instead.
3957
 */
3958
attribute_deprecated
3959
int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt);
3960
#endif
3961

    
3962
/* frame parsing */
3963
typedef struct AVCodecParserContext {
3964
    void *priv_data;
3965
    struct AVCodecParser *parser;
3966
    int64_t frame_offset; /* offset of the current frame */
3967
    int64_t cur_offset; /* current offset
3968
                           (incremented by each av_parser_parse()) */
3969
    int64_t next_frame_offset; /* offset of the next frame */
3970
    /* video info */
3971
    int pict_type; /* XXX: Put it back in AVCodecContext. */
3972
    /**
3973
     * This field is used for proper frame duration computation in lavf.
3974
     * It signals, how much longer the frame duration of the current frame
3975
     * is compared to normal frame duration.
3976
     *
3977
     * frame_duration = (1 + repeat_pict) * time_base
3978
     *
3979
     * It is used by codecs like H.264 to display telecined material.
3980
     */
3981
    int repeat_pict; /* XXX: Put it back in AVCodecContext. */
3982
    int64_t pts;     /* pts of the current frame */
3983
    int64_t dts;     /* dts of the current frame */
3984

    
3985
    /* private data */
3986
    int64_t last_pts;
3987
    int64_t last_dts;
3988
    int fetch_timestamp;
3989

    
3990
#define AV_PARSER_PTS_NB 4
3991
    int cur_frame_start_index;
3992
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
3993
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
3994
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
3995

    
3996
    int flags;
3997
#define PARSER_FLAG_COMPLETE_FRAMES           0x0001
3998
#define PARSER_FLAG_ONCE                      0x0002
3999
/// Set if the parser has a valid file offset
4000
#define PARSER_FLAG_FETCHED_OFFSET            0x0004
4001

    
4002
    int64_t offset;      ///< byte offset from starting packet start
4003
    int64_t cur_frame_end[AV_PARSER_PTS_NB];
4004

    
4005
    /*!
4006
     * Set by parser to 1 for key frames and 0 for non-key frames.
4007
     * It is initialized to -1, so if the parser doesn't set this flag,
4008
     * old-style fallback using FF_I_TYPE picture type as key frames
4009
     * will be used.
4010
     */
4011
    int key_frame;
4012

    
4013
    /**
4014
     * Time difference in stream time base units from the pts of this
4015
     * packet to the point at which the output from the decoder has converged
4016
     * independent from the availability of previous frames. That is, the
4017
     * frames are virtually identical no matter if decoding started from
4018
     * the very first frame or from this keyframe.
4019
     * Is AV_NOPTS_VALUE if unknown.
4020
     * This field is not the display duration of the current frame.
4021
     * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY
4022
     * set.
4023
     *
4024
     * The purpose of this field is to allow seeking in streams that have no
4025
     * keyframes in the conventional sense. It corresponds to the
4026
     * recovery point SEI in H.264 and match_time_delta in NUT. It is also
4027
     * essential for some types of subtitle streams to ensure that all
4028
     * subtitles are correctly displayed after seeking.
4029
     */
4030
    int64_t convergence_duration;
4031

    
4032
    // Timestamp generation support:
4033
    /**
4034
     * Synchronization point for start of timestamp generation.
4035
     *
4036
     * Set to >0 for sync point, 0 for no sync point and <0 for undefined
4037
     * (default).
4038
     *
4039
     * For example, this corresponds to presence of H.264 buffering period
4040
     * SEI message.
4041
     */
4042
    int dts_sync_point;
4043

    
4044
    /**
4045
     * Offset of the current timestamp against last timestamp sync point in
4046
     * units of AVCodecContext.time_base.
4047
     *
4048
     * Set to INT_MIN when dts_sync_point unused. Otherwise, it must
4049
     * contain a valid timestamp offset.
4050
     *
4051
     * Note that the timestamp of sync point has usually a nonzero
4052
     * dts_ref_dts_delta, which refers to the previous sync point. Offset of
4053
     * the next frame after timestamp sync point will be usually 1.
4054
     *
4055
     * For example, this corresponds to H.264 cpb_removal_delay.
4056
     */
4057
    int dts_ref_dts_delta;
4058

    
4059
    /**
4060
     * Presentation delay of current frame in units of AVCodecContext.time_base.
4061
     *
4062
     * Set to INT_MIN when dts_sync_point unused. Otherwise, it must
4063
     * contain valid non-negative timestamp delta (presentation time of a frame
4064
     * must not lie in the past).
4065
     *
4066
     * This delay represents the difference between decoding and presentation
4067
     * time of the frame.
4068
     *
4069
     * For example, this corresponds to H.264 dpb_output_delay.
4070
     */
4071
    int pts_dts_delta;
4072

    
4073
    /**
4074
     * Position of the packet in file.
4075
     *
4076
     * Analogous to cur_frame_pts/dts
4077
     */
4078
    int64_t cur_frame_pos[AV_PARSER_PTS_NB];
4079

    
4080
    /**
4081
     * Byte position of currently parsed frame in stream.
4082
     */
4083
    int64_t pos;
4084

    
4085
    /**
4086
     * Previous frame byte position.
4087
     */
4088
    int64_t last_pos;
4089
} AVCodecParserContext;
4090

    
4091
typedef struct AVCodecParser {
4092
    int codec_ids[5]; /* several codec IDs are permitted */
4093
    int priv_data_size;
4094
    int (*parser_init)(AVCodecParserContext *s);
4095
    int (*parser_parse)(AVCodecParserContext *s,
4096
                        AVCodecContext *avctx,
4097
                        const uint8_t **poutbuf, int *poutbuf_size,
4098
                        const uint8_t *buf, int buf_size);
4099
    void (*parser_close)(AVCodecParserContext *s);
4100
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
4101
    struct AVCodecParser *next;
4102
} AVCodecParser;
4103

    
4104
AVCodecParser *av_parser_next(AVCodecParser *c);
4105

    
4106
void av_register_codec_parser(AVCodecParser *parser);
4107
AVCodecParserContext *av_parser_init(int codec_id);
4108

    
4109
#if LIBAVCODEC_VERSION_MAJOR < 53
4110
attribute_deprecated
4111
int av_parser_parse(AVCodecParserContext *s,
4112
                    AVCodecContext *avctx,
4113
                    uint8_t **poutbuf, int *poutbuf_size,
4114
                    const uint8_t *buf, int buf_size,
4115
                    int64_t pts, int64_t dts);
4116
#endif
4117

    
4118
/**
4119
 * Parse a packet.
4120
 *
4121
 * @param s             parser context.
4122
 * @param avctx         codec context.
4123
 * @param poutbuf       set to pointer to parsed buffer or NULL if not yet finished.
4124
 * @param poutbuf_size  set to size of parsed buffer or zero if not yet finished.
4125
 * @param buf           input buffer.
4126
 * @param buf_size      input length, to signal EOF, this should be 0 (so that the last frame can be output).
4127
 * @param pts           input presentation timestamp.
4128
 * @param dts           input decoding timestamp.
4129
 * @param pos           input byte position in stream.
4130
 * @return the number of bytes of the input bitstream used.
4131
 *
4132
 * Example:
4133
 * @code
4134
 *   while(in_len){
4135
 *       len = av_parser_parse2(myparser, AVCodecContext, &data, &size,
4136
 *                                        in_data, in_len,
4137
 *                                        pts, dts, pos);
4138
 *       in_data += len;
4139
 *       in_len  -= len;
4140
 *
4141
 *       if(size)
4142
 *          decode_frame(data, size);
4143
 *   }
4144
 * @endcode
4145
 */
4146
int av_parser_parse2(AVCodecParserContext *s,
4147
                     AVCodecContext *avctx,
4148
                     uint8_t **poutbuf, int *poutbuf_size,
4149
                     const uint8_t *buf, int buf_size,
4150
                     int64_t pts, int64_t dts,
4151
                     int64_t pos);
4152

    
4153
int av_parser_change(AVCodecParserContext *s,
4154
                     AVCodecContext *avctx,
4155
                     uint8_t **poutbuf, int *poutbuf_size,
4156
                     const uint8_t *buf, int buf_size, int keyframe);
4157
void av_parser_close(AVCodecParserContext *s);
4158

    
4159

    
4160
typedef struct AVBitStreamFilterContext {
4161
    void *priv_data;
4162
    struct AVBitStreamFilter *filter;
4163
    AVCodecParserContext *parser;
4164
    struct AVBitStreamFilterContext *next;
4165
} AVBitStreamFilterContext;
4166

    
4167

    
4168
typedef struct AVBitStreamFilter {
4169
    const char *name;
4170
    int priv_data_size;
4171
    int (*filter)(AVBitStreamFilterContext *bsfc,
4172
                  AVCodecContext *avctx, const char *args,
4173
                  uint8_t **poutbuf, int *poutbuf_size,
4174
                  const uint8_t *buf, int buf_size, int keyframe);
4175
    void (*close)(AVBitStreamFilterContext *bsfc);
4176
    struct AVBitStreamFilter *next;
4177
} AVBitStreamFilter;
4178

    
4179
void av_register_bitstream_filter(AVBitStreamFilter *bsf);
4180
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
4181
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
4182
                               AVCodecContext *avctx, const char *args,
4183
                               uint8_t **poutbuf, int *poutbuf_size,
4184
                               const uint8_t *buf, int buf_size, int keyframe);
4185
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
4186

    
4187
AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f);
4188

    
4189
/* memory */
4190

    
4191
/**
4192
 * Reallocate the given block if it is not large enough, otherwise do nothing.
4193
 *
4194
 * @see av_realloc
4195
 */
4196
void *av_fast_realloc(void *ptr, unsigned int *size, FF_INTERNALC_MEM_TYPE min_size);
4197

    
4198
/**
4199
 * Allocate a buffer, reusing the given one if large enough.
4200
 *
4201
 * Contrary to av_fast_realloc the current buffer contents might not be
4202
 * preserved and on error the old buffer is freed, thus no special
4203
 * handling to avoid memleaks is necessary.
4204
 *
4205
 * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer
4206
 * @param size size of the buffer *ptr points to
4207
 * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and
4208
 *                 *size 0 if an error occurred.
4209
 */
4210
void av_fast_malloc(void *ptr, unsigned int *size, FF_INTERNALC_MEM_TYPE min_size);
4211

    
4212
#if LIBAVCODEC_VERSION_MAJOR < 53
4213
/**
4214
 * @deprecated Deprecated in favor of av_image_copy().
4215
 */
4216
attribute_deprecated
4217
void av_picture_data_copy(uint8_t *dst_data[4], int dst_linesize[4],
4218
                          uint8_t *src_data[4], int src_linesize[4],
4219
                          enum PixelFormat pix_fmt, int width, int height);
4220
#endif
4221

    
4222
/**
4223
 * Copy image src to dst. Wraps av_picture_data_copy() above.
4224
 */
4225
void av_picture_copy(AVPicture *dst, const AVPicture *src,
4226
                     enum PixelFormat pix_fmt, int width, int height);
4227

    
4228
/**
4229
 * Crop image top and left side.
4230
 */
4231
int av_picture_crop(AVPicture *dst, const AVPicture *src,
4232
                    enum PixelFormat pix_fmt, int top_band, int left_band);
4233

    
4234
/**
4235
 * Pad image.
4236
 */
4237
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, enum PixelFormat pix_fmt,
4238
            int padtop, int padbottom, int padleft, int padright, int *color);
4239

    
4240
/**
4241
 * Encode extradata length to a buffer. Used by xiph codecs.
4242
 *
4243
 * @param s buffer to write to; must be at least (v/255+1) bytes long
4244
 * @param v size of extradata in bytes
4245
 * @return number of bytes written to the buffer.
4246
 */
4247
unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
4248

    
4249
#if LIBAVCODEC_VERSION_MAJOR < 53
4250
/**
4251
 * Parse str and put in width_ptr and height_ptr the detected values.
4252
 *
4253
 * @deprecated Deprecated in favor of av_parse_video_size().
4254
 */
4255
attribute_deprecated int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str);
4256

    
4257
/**
4258
 * Parse str and store the detected values in *frame_rate.
4259
 *
4260
 * @deprecated Deprecated in favor of av_parse_video_rate().
4261
 */
4262
attribute_deprecated int av_parse_video_frame_rate(AVRational *frame_rate, const char *str);
4263
#endif
4264

    
4265
/**
4266
 * Logs a generic warning message about a missing feature. This function is
4267
 * intended to be used internally by Libav (libavcodec, libavformat, etc.)
4268
 * only, and would normally not be used by applications.
4269
 * @param[in] avc a pointer to an arbitrary struct of which the first field is
4270
 * a pointer to an AVClass struct
4271
 * @param[in] feature string containing the name of the missing feature
4272
 * @param[in] want_sample indicates if samples are wanted which exhibit this feature.
4273
 * If want_sample is non-zero, additional verbage will be added to the log
4274
 * message which tells the user how to report samples to the development
4275
 * mailing list.
4276
 */
4277
void av_log_missing_feature(void *avc, const char *feature, int want_sample);
4278

    
4279
/**
4280
 * Log a generic warning message asking for a sample. This function is
4281
 * intended to be used internally by Libav (libavcodec, libavformat, etc.)
4282
 * only, and would normally not be used by applications.
4283
 * @param[in] avc a pointer to an arbitrary struct of which the first field is
4284
 * a pointer to an AVClass struct
4285
 * @param[in] msg string containing an optional message, or NULL if no message
4286
 */
4287
void av_log_ask_for_sample(void *avc, const char *msg);
4288

    
4289
/**
4290
 * Register the hardware accelerator hwaccel.
4291
 */
4292
void av_register_hwaccel(AVHWAccel *hwaccel);
4293

    
4294
/**
4295
 * If hwaccel is NULL, returns the first registered hardware accelerator,
4296
 * if hwaccel is non-NULL, returns the next registered hardware accelerator
4297
 * after hwaccel, or NULL if hwaccel is the last one.
4298
 */
4299
AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel);
4300

    
4301

    
4302
/**
4303
 * Lock operation used by lockmgr
4304
 */
4305
enum AVLockOp {
4306
  AV_LOCK_CREATE,  ///< Create a mutex
4307
  AV_LOCK_OBTAIN,  ///< Lock the mutex
4308
  AV_LOCK_RELEASE, ///< Unlock the mutex
4309
  AV_LOCK_DESTROY, ///< Free mutex resources
4310
};
4311

    
4312
/**
4313
 * Register a user provided lock manager supporting the operations
4314
 * specified by AVLockOp. mutex points to a (void *) where the
4315
 * lockmgr should store/get a pointer to a user allocated mutex. It's
4316
 * NULL upon AV_LOCK_CREATE and != NULL for all other ops.
4317
 *
4318
 * @param cb User defined callback. Note: Libav may invoke calls to this
4319
 *           callback during the call to av_lockmgr_register().
4320
 *           Thus, the application must be prepared to handle that.
4321
 *           If cb is set to NULL the lockmgr will be unregistered.
4322
 *           Also note that during unregistration the previously registered
4323
 *           lockmgr callback may also be invoked.
4324
 */
4325
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op));
4326

    
4327
#endif /* AVCODEC_AVCODEC_H */