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/*
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 * copyright (c) 2001 Fabrice Bellard
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#ifndef AVCODEC_H
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#define AVCODEC_H
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/**
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 * @file avcodec.h
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 * external API header
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 */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "avutil.h"
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#include <sys/types.h> /* size_t */
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#define AV_STRINGIFY(s)         AV_TOSTRING(s)
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#define AV_TOSTRING(s) #s
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#define LIBAVCODEC_VERSION_INT  ((51<<16)+(40<<8)+4)
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#define LIBAVCODEC_VERSION      51.40.4
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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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#define AV_NOPTS_VALUE          INT64_C(0x8000000000000000)
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#define AV_TIME_BASE            1000000
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#define AV_TIME_BASE_Q          (AVRational){1, AV_TIME_BASE}
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/**
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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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    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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    CODEC_ID_XVID,
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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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    /* 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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    /* 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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    /* 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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    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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#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
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    CODEC_ID_MPEG4AAC,
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#endif
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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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    /* 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_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG-2 TS
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                                * stream (only used by libavformat) */
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};
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#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
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/* CODEC_ID_MP3LAME is obsolete */
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#define CODEC_ID_MP3LAME CODEC_ID_MP3
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#define CODEC_ID_MPEG4AAC CODEC_ID_AAC
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#endif
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enum CodecType {
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    CODEC_TYPE_UNKNOWN = -1,
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    CODEC_TYPE_VIDEO,
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    CODEC_TYPE_AUDIO,
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    CODEC_TYPE_DATA,
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    CODEC_TYPE_SUBTITLE,
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    CODEC_TYPE_NB
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};
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/* Currently unused, may be used if 24/32 bits samples are ever supported. */
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/* all in native-endian format */
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enum SampleFormat {
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    SAMPLE_FMT_NONE = -1,
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    SAMPLE_FMT_U8,              ///< unsigned 8 bits
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    SAMPLE_FMT_S16,             ///< signed 16 bits
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    SAMPLE_FMT_S24,             ///< signed 24 bits
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    SAMPLE_FMT_S32,             ///< signed 32 bits
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    SAMPLE_FMT_FLT,             ///< float
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};
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/* in bytes */
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#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
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/**
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 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
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 * This is mainly needed because some optimized bitstream readers read
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 * 32 or 64 bit at once and could read over the end.<br>
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 * Note: If the first 23 bits of the additional bytes are not 0, then damaged
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 * MPEG bitstreams could cause overread and segfault.
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 */
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#define FF_INPUT_BUFFER_PADDING_SIZE 8
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/**
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 * minimum encoding buffer size
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 * Used to avoid some checks during header writing.
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 */
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#define FF_MIN_BUFFER_SIZE 16384
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/* motion estimation type, EPZS by default */
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enum Motion_Est_ID {
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    ME_ZERO = 1,
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    ME_FULL,
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    ME_LOG,
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    ME_PHODS,
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    ME_EPZS,
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    ME_X1,
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    ME_HEX,
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    ME_UMH,
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    ME_ITER,
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};
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enum AVDiscard{
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    /* We leave some space between them for extensions (drop some
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     * keyframes for intra-only or drop just some bidir frames). */
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    AVDISCARD_NONE   =-16, ///< discard nothing
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    AVDISCARD_DEFAULT=  0, ///< discard useless packets like 0 size packets in avi
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    AVDISCARD_NONREF =  8, ///< discard all non reference
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    AVDISCARD_BIDIR  = 16, ///< discard all bidirectional frames
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    AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
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    AVDISCARD_ALL    = 48, ///< discard all
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};
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typedef struct RcOverride{
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    int start_frame;
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    int end_frame;
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    int qscale; // If this is 0 then quality_factor will be used instead.
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    float quality_factor;
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} RcOverride;
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#define FF_MAX_B_FRAMES 16
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/* encoding support
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   These flags can be passed in AVCodecContext.flags before initialization.
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   Note: Not everything is supported yet.
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*/
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#define CODEC_FLAG_QSCALE 0x0002  ///< Use fixed qscale.
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#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / advanced prediction for H.263.
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#define CODEC_FLAG_QPEL   0x0010  ///< Use qpel MC.
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#define CODEC_FLAG_GMC    0x0020  ///< Use GMC.
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#define CODEC_FLAG_MV0    0x0040  ///< Always try a MB with MV=<0,0>.
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#define CODEC_FLAG_PART   0x0080  ///< Use data partitioning.
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/* The parent program guarantees that the input for B-frames containing
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 * streams is not written to for at least s->max_b_frames+1 frames, if
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 * this is not set the input will be copied. */
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#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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#define CODEC_FLAG_PASS1 0x0200   ///< Use internal 2pass ratecontrol in first pass mode.
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#define CODEC_FLAG_PASS2 0x0400   ///< Use internal 2pass ratecontrol in second pass mode.
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#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< Use external Huffman table (for MJPEG).
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#define CODEC_FLAG_GRAY  0x2000   ///< Only decode/encode grayscale.
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#define CODEC_FLAG_EMU_EDGE 0x4000///< Don't draw edges.
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#define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding.
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#define CODEC_FLAG_TRUNCATED  0x00010000 /** Input bitstream might be truncated at a random location instead
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                                            of only at frame boundaries. */
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#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< Normalize adaptive quantization.
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#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< Use interlaced DCT.
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#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< Force low delay.
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#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< Use alternate scan.
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#define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< Use trellis quantization.
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#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< Place global headers in extradata instead of every keyframe.
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#define CODEC_FLAG_BITEXACT       0x00800000 ///< Use only bitexact stuff (except (I)DCT).
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/* Fx : Flag for h263+ extra options */
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#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
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#define CODEC_FLAG_H263P_AIC      0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction (remove this)
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#endif
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#define CODEC_FLAG_AC_PRED        0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction
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#define CODEC_FLAG_H263P_UMV      0x02000000 ///< unlimited motion vector
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#define CODEC_FLAG_CBP_RD         0x04000000 ///< Use rate distortion optimization for cbp.
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#define CODEC_FLAG_QP_RD          0x08000000 ///< Use rate distortion optimization for qp selectioon.
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#define CODEC_FLAG_H263P_AIV      0x00000008 ///< H.263 alternative inter VLC
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#define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
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#define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
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#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
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#define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
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#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< Will reserve space for SVCD scan offset user data.
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#define CODEC_FLAG_CLOSED_GOP     ((int)0x80000000)
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#define CODEC_FLAG2_FAST          0x00000001 ///< Allow non spec compliant speedup tricks.
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#define CODEC_FLAG2_STRICT_GOP    0x00000002 ///< Strictly enforce GOP size.
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#define CODEC_FLAG2_NO_OUTPUT     0x00000004 ///< Skip bitstream encoding.
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#define CODEC_FLAG2_LOCAL_HEADER  0x00000008 ///< Place global headers at every keyframe instead of in extradata.
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#define CODEC_FLAG2_BPYRAMID      0x00000010 ///< H.264 allow B-frames to be used as references.
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#define CODEC_FLAG2_WPRED         0x00000020 ///< H.264 weighted biprediction for B-frames
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#define CODEC_FLAG2_MIXED_REFS    0x00000040 ///< H.264 one reference per partition, as opposed to one reference per macroblock
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#define CODEC_FLAG2_8X8DCT        0x00000080 ///< H.264 high profile 8x8 transform
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#define CODEC_FLAG2_FASTPSKIP     0x00000100 ///< H.264 fast pskip
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#define CODEC_FLAG2_AUD           0x00000200 ///< H.264 access unit delimiters
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#define CODEC_FLAG2_BRDO          0x00000400 ///< B-frame rate-distortion optimization
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#define CODEC_FLAG2_INTRA_VLC     0x00000800 ///< Use MPEG-2 intra VLC table.
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#define CODEC_FLAG2_MEMC_ONLY     0x00001000 ///< Only do ME/MC (I frames -> ref, P frame -> ME+MC).
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#define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format.
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#define CODEC_FLAG2_SKIP_RD       0x00004000 ///< RD optimal MB level residual skipping
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#define CODEC_FLAG2_CHUNKS        0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
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#define CODEC_FLAG2_NON_LINEAR_QUANT 0x00010000 ///< Use MPEG-2 nonlinear quantizer.
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/* Unsupported options :
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 *              Syntax Arithmetic coding (SAC)
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 *              Reference Picture Selection
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 *              Independent Segment Decoding */
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/* /Fx */
412
/* codec capabilities */
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#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< Decoder can use draw_horiz_band callback.
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/**
416
 * Codec uses get_buffer() for allocating buffers.
417
 * direct rendering method 1
418
 */
419
#define CODEC_CAP_DR1             0x0002
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/* If 'parse_only' field is true, then avcodec_parse_frame() can be used. */
421
#define CODEC_CAP_PARSE_ONLY      0x0004
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#define CODEC_CAP_TRUNCATED       0x0008
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/* Codec can export data for HW decoding (XvMC). */
424
#define CODEC_CAP_HWACCEL         0x0010
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/**
426
 * Codec has a nonzero delay and needs to be fed with NULL at the end to get the delayed data.
427
 * If this is not set, the codec is guaranteed to never be fed with NULL data.
428
 */
429
#define CODEC_CAP_DELAY           0x0020
430
/**
431
 * Codec can be fed a final frame with a smaller size.
432
 * This can be used to prevent truncation of the last audio samples.
433
 */
434
#define CODEC_CAP_SMALL_LAST_FRAME 0x0040
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436
//The following defines may change, don't expect compatibility if you use them.
437
#define MB_TYPE_INTRA4x4   0x0001
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#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific
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#define MB_TYPE_INTRA_PCM  0x0004 //FIXME H.264-specific
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#define MB_TYPE_16x16      0x0008
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#define MB_TYPE_16x8       0x0010
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#define MB_TYPE_8x16       0x0020
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#define MB_TYPE_8x8        0x0040
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#define MB_TYPE_INTERLACED 0x0080
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#define MB_TYPE_DIRECT2     0x0100 //FIXME
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#define MB_TYPE_ACPRED     0x0200
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#define MB_TYPE_GMC        0x0400
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#define MB_TYPE_SKIP       0x0800
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#define MB_TYPE_P0L0       0x1000
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#define MB_TYPE_P1L0       0x2000
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#define MB_TYPE_P0L1       0x4000
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#define MB_TYPE_P1L1       0x8000
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#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
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#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
455
#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
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#define MB_TYPE_QUANT      0x00010000
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#define MB_TYPE_CBP        0x00020000
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//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
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460
/**
461
 * Pan Scan area.
462
 * This specifies the area which should be displayed.
463
 * Note there may be multiple such areas for one frame.
464
 */
465
typedef struct AVPanScan{
466
    /**
467
     * id
468
     * - encoding: Set by user.
469
     * - decoding: Set by libavcodec.
470
     */
471
    int id;
472

    
473
    /**
474
     * width and height in 1/16 pel
475
     * - encoding: Set by user.
476
     * - decoding: Set by libavcodec.
477
     */
478
    int width;
479
    int height;
480

    
481
    /**
482
     * position of the top left corner in 1/16 pel for up to 3 fields/frames
483
     * - encoding: Set by user.
484
     * - decoding: Set by libavcodec.
485
     */
486
    int16_t position[3][2];
487
}AVPanScan;
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489
#define FF_COMMON_FRAME \
490
    /**\
491
     * pointer to the picture planes.\
492
     * This might be different from the first allocated byte\
493
     * - encoding: \
494
     * - decoding: \
495
     */\
496
    uint8_t *data[4];\
497
    int linesize[4];\
498
    /**\
499
     * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.\
500
     * This isn't used by libavcodec unless the default get/release_buffer() is used.\
501
     * - encoding: \
502
     * - decoding: \
503
     */\
504
    uint8_t *base[4];\
505
    /**\
506
     * 1 -> keyframe, 0-> not\
507
     * - encoding: Set by libavcodec.\
508
     * - decoding: Set by libavcodec.\
509
     */\
510
    int key_frame;\
511
\
512
    /**\
513
     * Picture type of the frame, see ?_TYPE below.\
514
     * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
515
     * - decoding: Set by libavcodec.\
516
     */\
517
    int pict_type;\
518
\
519
    /**\
520
     * presentation timestamp in time_base units (time when frame should be shown to user)\
521
     * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.\
522
     * - encoding: MUST be set by user.\
523
     * - decoding: Set by libavcodec.\
524
     */\
525
    int64_t pts;\
526
\
527
    /**\
528
     * picture number in bitstream order\
529
     * - encoding: set by\
530
     * - decoding: Set by libavcodec.\
531
     */\
532
    int coded_picture_number;\
533
    /**\
534
     * picture number in display order\
535
     * - encoding: set by\
536
     * - decoding: Set by libavcodec.\
537
     */\
538
    int display_picture_number;\
539
\
540
    /**\
541
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
542
     * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
543
     * - decoding: Set by libavcodec.\
544
     */\
545
    int quality; \
546
\
547
    /**\
548
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
549
     * Set to INT_MAX if the buffer has not been used yet.\
550
     * - encoding: unused\
551
     * - decoding: MUST be set by get_buffer().\
552
     */\
553
    int age;\
554
\
555
    /**\
556
     * is this picture used as reference\
557
     * - encoding: unused\
558
     * - decoding: Set by libavcodec. (before get_buffer() call)).\
559
     */\
560
    int reference;\
561
\
562
    /**\
563
     * QP table\
564
     * - encoding: unused\
565
     * - decoding: Set by libavcodec.\
566
     */\
567
    int8_t *qscale_table;\
568
    /**\
569
     * QP store stride\
570
     * - encoding: unused\
571
     * - decoding: Set by libavcodec.\
572
     */\
573
    int qstride;\
574
\
575
    /**\
576
     * mbskip_table[mb]>=1 if MB didn't change\
577
     * stride= mb_width = (width+15)>>4\
578
     * - encoding: unused\
579
     * - decoding: Set by libavcodec.\
580
     */\
581
    uint8_t *mbskip_table;\
582
\
583
    /**\
584
     * motion vector table\
585
     * @code\
586
     * example:\
587
     * int mv_sample_log2= 4 - motion_subsample_log2;\
588
     * int mb_width= (width+15)>>4;\
589
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
590
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
591
     * @endcode\
592
     * - encoding: Set by user.\
593
     * - decoding: Set by libavcodec.\
594
     */\
595
    int16_t (*motion_val[2])[2];\
596
\
597
    /**\
598
     * macroblock type table\
599
     * mb_type_base + mb_width + 2\
600
     * - encoding: Set by user.\
601
     * - decoding: Set by libavcodec.\
602
     */\
603
    uint32_t *mb_type;\
604
\
605
    /**\
606
     * log2 of the size of the block which a single vector in motion_val represents: \
607
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
608
     * - encoding: unused\
609
     * - decoding: Set by libavcodec.\
610
     */\
611
    uint8_t motion_subsample_log2;\
612
\
613
    /**\
614
     * for some private data of the user\
615
     * - encoding: unused\
616
     * - decoding: Set by user.\
617
     */\
618
    void *opaque;\
619
\
620
    /**\
621
     * error\
622
     * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.\
623
     * - decoding: unused\
624
     */\
625
    uint64_t error[4];\
626
\
627
    /**\
628
     * type of the buffer (to keep track of who has to deallocate data[*])\
629
     * - encoding: Set by the one who allocates it.\
630
     * - decoding: Set by the one who allocates it.\
631
     * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.\
632
     */\
633
    int type;\
634
    \
635
    /**\
636
     * When decoding, this signals how much the picture must be delayed.\
637
     * extra_delay = repeat_pict / (2*fps)\
638
     * - encoding: unused\
639
     * - decoding: Set by libavcodec.\
640
     */\
641
    int repeat_pict;\
642
    \
643
    /**\
644
     * \
645
     */\
646
    int qscale_type;\
647
    \
648
    /**\
649
     * The content of the picture is interlaced.\
650
     * - encoding: Set by user.\
651
     * - decoding: Set by libavcodec. (default 0)\
652
     */\
653
    int interlaced_frame;\
654
    \
655
    /**\
656
     * If the content is interlaced, is top field displayed first.\
657
     * - encoding: Set by user.\
658
     * - decoding: Set by libavcodec.\
659
     */\
660
    int top_field_first;\
661
    \
662
    /**\
663
     * Pan scan.\
664
     * - encoding: Set by user.\
665
     * - decoding: Set by libavcodec.\
666
     */\
667
    AVPanScan *pan_scan;\
668
    \
669
    /**\
670
     * Tell user application that palette has changed from previous frame.\
671
     * - encoding: ??? (no palette-enabled encoder yet)\
672
     * - decoding: Set by libavcodec. (default 0).\
673
     */\
674
    int palette_has_changed;\
675
    \
676
    /**\
677
     * codec suggestion on buffer type if != 0\
678
     * - encoding: unused\
679
     * - decoding: Set by libavcodec. (before get_buffer() call)).\
680
     */\
681
    int buffer_hints;\
682
\
683
    /**\
684
     * DCT coefficients\
685
     * - encoding: unused\
686
     * - decoding: Set by libavcodec.\
687
     */\
688
    short *dct_coeff;\
689
\
690
    /**\
691
     * motion referece frame index\
692
     * - encoding: Set by user.\
693
     * - decoding: Set by libavcodec.\
694
     */\
695
    int8_t *ref_index[2];
696

    
697
#define FF_QSCALE_TYPE_MPEG1 0
698
#define FF_QSCALE_TYPE_MPEG2 1
699
#define FF_QSCALE_TYPE_H264  2
700

    
701
#define FF_BUFFER_TYPE_INTERNAL 1
702
#define FF_BUFFER_TYPE_USER     2 ///< direct rendering buffers (image is (de)allocated by user)
703
#define FF_BUFFER_TYPE_SHARED   4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared.
704
#define FF_BUFFER_TYPE_COPY     8 ///< Just a (modified) copy of some other buffer, don't deallocate anything.
705

    
706

    
707
#define FF_I_TYPE 1 // Intra
708
#define FF_P_TYPE 2 // Predicted
709
#define FF_B_TYPE 3 // Bi-dir predicted
710
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
711
#define FF_SI_TYPE 5
712
#define FF_SP_TYPE 6
713

    
714
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore).
715
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer.
716
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content.
717
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update).
718

    
719
/**
720
 * Audio Video Frame.
721
 */
722
typedef struct AVFrame {
723
    FF_COMMON_FRAME
724
} AVFrame;
725

    
726
#define DEFAULT_FRAME_RATE_BASE 1001000
727

    
728
/**
729
 * main external API structure
730
 */
731
typedef struct AVCodecContext {
732
    /**
733
     * information on struct for av_log
734
     * - set by avcodec_alloc_context
735
     */
736
    AVClass *av_class;
737
    /**
738
     * the average bitrate
739
     * - encoding: Set by user; unused for constant quantizer encoding.
740
     * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
741
     */
742
    int bit_rate;
743

    
744
    /**
745
     * number of bits the bitstream is allowed to diverge from the reference.
746
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
747
     * - encoding: Set by user; unused for constant quantizer encoding.
748
     * - decoding: unused
749
     */
750
    int bit_rate_tolerance;
751

    
752
    /**
753
     * CODEC_FLAG_*.
754
     * - encoding: Set by user.
755
     * - decoding: Set by user.
756
     */
757
    int flags;
758

    
759
    /**
760
     * Some codecs need additional format info. It is stored here.
761
     * If any muxer uses this then ALL demuxers/parsers AND encoders for the
762
     * specific codec MUST set it correctly otherwise stream copy breaks.
763
     * In general use of this field by muxers is not recommanded.
764
     * - encoding: Set by libavcodec.
765
     * - decoding: Set by libavcodec. (FIXME: Is this OK?)
766
     */
767
    int sub_id;
768

    
769
    /**
770
     * Motion estimation algorithm used for video coding.
771
     * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
772
     * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
773
     * - encoding: MUST be set by user.
774
     * - decoding: unused
775
     */
776
    int me_method;
777

    
778
    /**
779
     * some codecs need / can use extradata like Huffman tables.
780
     * mjpeg: Huffman tables
781
     * rv10: additional flags
782
     * mpeg4: global headers (they can be in the bitstream or here)
783
     * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
784
     * than extradata_size to avoid prolems if it is read with the bitstream reader.
785
     * The bytewise contents of extradata must not depend on the architecture or CPU endianness.
786
     * - encoding: Set/allocated/freed by libavcodec.
787
     * - decoding: Set/allocated/freed by user.
788
     */
789
    uint8_t *extradata;
790
    int extradata_size;
791

    
792
    /**
793
     * This is the fundamental unit of time (in seconds) in terms
794
     * of which frame timestamps are represented. For fixed-fps content,
795
     * timebase should be 1/framerate and timestamp increments should be
796
     * identically 1.
797
     * - encoding: MUST be set by user.
798
     * - decoding: Set by libavcodec.
799
     */
800
    AVRational time_base;
801

    
802
    /* video only */
803
    /**
804
     * picture width / height.
805
     * - encoding: MUST be set by user.
806
     * - decoding: Set by libavcodec.
807
     * Note: For compatibility it is possible to set this instead of
808
     * coded_width/height before decoding.
809
     */
810
    int width, height;
811

    
812
#define FF_ASPECT_EXTENDED 15
813

    
814
    /**
815
     * the number of pictures in a group of pictures, or 0 for intra_only
816
     * - encoding: Set by user.
817
     * - decoding: unused
818
     */
819
    int gop_size;
820

    
821
    /**
822
     * Pixel format, see PIX_FMT_xxx.
823
     * - encoding: Set by user.
824
     * - decoding: Set by libavcodec.
825
     */
826
    enum PixelFormat pix_fmt;
827

    
828
    /**
829
     * Frame rate emulation. If not zero, the lower layer (i.e. format handler)
830
     * has to read frames at native frame rate.
831
     * - encoding: Set by user.
832
     * - decoding: unused
833
     */
834
    int rate_emu;
835

    
836
    /**
837
     * If non NULL, 'draw_horiz_band' is called by the libavcodec
838
     * decoder to draw a horizontal band. It improves cache usage. Not
839
     * all codecs can do that. You must check the codec capabilities
840
     * beforehand.
841
     * - encoding: unused
842
     * - decoding: Set by user.
843
     * @param height the height of the slice
844
     * @param y the y position of the slice
845
     * @param type 1->top field, 2->bottom field, 3->frame
846
     * @param offset offset into the AVFrame.data from which the slice should be read
847
     */
848
    void (*draw_horiz_band)(struct AVCodecContext *s,
849
                            const AVFrame *src, int offset[4],
850
                            int y, int type, int height);
851

    
852
    /* audio only */
853
    int sample_rate; ///< samples per second
854
    int channels;
855

    
856
    /**
857
     * audio sample format
858
     * - encoding: Set by user.
859
     * - decoding: Set by libavcodec.
860
     */
861
    enum SampleFormat sample_fmt;  ///< sample format, currently unused
862

    
863
    /* The following data should not be initialized. */
864
    /**
865
     * Samples per packet, initialized when calling 'init'.
866
     */
867
    int frame_size;
868
    int frame_number;   ///< audio or video frame number
869
    int real_pict_num;  ///< Returns the real picture number of previous encoded frame.
870

    
871
    /**
872
     * Number of frames the decoded output will be delayed relative to
873
     * the encoded input.
874
     * - encoding: Set by libavcodec.
875
     * - decoding: unused
876
     */
877
    int delay;
878

    
879
    /* - encoding parameters */
880
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
881
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
882

    
883
    /**
884
     * minimum quantizer
885
     * - encoding: Set by user.
886
     * - decoding: unused
887
     */
888
    int qmin;
889

    
890
    /**
891
     * maximum quantizer
892
     * - encoding: Set by user.
893
     * - decoding: unused
894
     */
895
    int qmax;
896

    
897
    /**
898
     * maximum quantizer difference between frames
899
     * - encoding: Set by user.
900
     * - decoding: unused
901
     */
902
    int max_qdiff;
903

    
904
    /**
905
     * maximum number of B-frames between non-B-frames
906
     * Note: The output will be delayed by max_b_frames+1 relative to the input.
907
     * - encoding: Set by user.
908
     * - decoding: unused
909
     */
910
    int max_b_frames;
911

    
912
    /**
913
     * qscale factor between IP and B-frames
914
     * - encoding: Set by user.
915
     * - decoding: unused
916
     */
917
    float b_quant_factor;
918

    
919
    /** obsolete FIXME remove */
920
    int rc_strategy;
921
#define FF_RC_STRATEGY_XVID 1
922

    
923
    int b_frame_strategy;
924

    
925
    /**
926
     * hurry up amount
927
     * - encoding: unused
928
     * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header
929
     * @deprecated Deprecated in favor of skip_idct and skip_frame.
930
     */
931
    int hurry_up;
932

    
933
    struct AVCodec *codec;
934

    
935
    void *priv_data;
936

    
937
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
938
    /* unused, FIXME remove*/
939
    int rtp_mode;
940
#endif
941

    
942
    int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
943
                            /* do its best to deliver a chunk with size     */
944
                            /* below rtp_payload_size, the chunk will start */
945
                            /* with a start code on some codecs like H.263. */
946
                            /* This doesn't take account of any particular  */
947
                            /* headers inside the transmitted RTP payload.  */
948

    
949

    
950
    /* The RTP callback: This function is called    */
951
    /* every time the encoder has a packet to send. */
952
    /* It depends on the encoder if the data starts */
953
    /* with a Start Code (it should). H.263 does.   */
954
    /* mb_nb contains the number of macroblocks     */
955
    /* encoded in the RTP payload.                  */
956
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
957

    
958
    /* statistics, used for 2-pass encoding */
959
    int mv_bits;
960
    int header_bits;
961
    int i_tex_bits;
962
    int p_tex_bits;
963
    int i_count;
964
    int p_count;
965
    int skip_count;
966
    int misc_bits;
967

    
968
    /**
969
     * number of bits used for the previously encoded frame
970
     * - encoding: Set by libavcodec.
971
     * - decoding: unused
972
     */
973
    int frame_bits;
974

    
975
    /**
976
     * Private data of the user, can be used to carry app specific stuff.
977
     * - encoding: Set by user.
978
     * - decoding: Set by user.
979
     */
980
    void *opaque;
981

    
982
    char codec_name[32];
983
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
984
    enum CodecID codec_id; /* see CODEC_ID_xxx */
985

    
986
    /**
987
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
988
     * This is used to work around some encoder bugs.
989
     * A demuxer should set this to what is stored in the field used to identify the codec.
990
     * If there are multiple such fields in a container then the demuxer should choose the one
991
     * which maximizes the information about the used codec.
992
     * If the codec tag field in a container is larger then 32 bits then the demuxer should
993
     * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
994
     * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
995
     * first.
996
     * - encoding: Set by user, if not then the default based on codec_id will be used.
997
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
998
     */
999
    unsigned int codec_tag;
1000

    
1001
    /**
1002
     * Work around bugs in encoders which sometimes cannot be detected automatically.
1003
     * - encoding: Set by user
1004
     * - decoding: Set by user
1005
     */
1006
    int workaround_bugs;
1007
#define FF_BUG_AUTODETECT       1  ///< autodetection
1008
#define FF_BUG_OLD_MSMPEG4      2
1009
#define FF_BUG_XVID_ILACE       4
1010
#define FF_BUG_UMP4             8
1011
#define FF_BUG_NO_PADDING       16
1012
#define FF_BUG_AMV              32
1013
#define FF_BUG_AC_VLC           0  ///< Will be removed, libavcodec can now handle these non-compliant files by default.
1014
#define FF_BUG_QPEL_CHROMA      64
1015
#define FF_BUG_STD_QPEL         128
1016
#define FF_BUG_QPEL_CHROMA2     256
1017
#define FF_BUG_DIRECT_BLOCKSIZE 512
1018
#define FF_BUG_EDGE             1024
1019
#define FF_BUG_HPEL_CHROMA      2048
1020
#define FF_BUG_DC_CLIP          4096
1021
#define FF_BUG_MS               8192 ///< Work around various bugs in Microsoft's broken decoders.
1022
//#define FF_BUG_FAKE_SCALABILITY 16 //Autodetection should work 100%.
1023

    
1024
    /**
1025
     * luma single coefficient elimination threshold
1026
     * - encoding: Set by user.
1027
     * - decoding: unused
1028
     */
1029
    int luma_elim_threshold;
1030

    
1031
    /**
1032
     * chroma single coeff elimination threshold
1033
     * - encoding: Set by user.
1034
     * - decoding: unused
1035
     */
1036
    int chroma_elim_threshold;
1037

    
1038
    /**
1039
     * strictly follow the standard (MPEG4, ...).
1040
     * - encoding: Set by user.
1041
     * - decoding: unused
1042
     */
1043
    int strict_std_compliance;
1044
#define FF_COMPLIANCE_VERY_STRICT   2 ///< Strictly conform to a older more strict version of the spec or reference software.
1045
#define FF_COMPLIANCE_STRICT        1 ///< Strictly conform to all the things in the spec no matter what consequences.
1046
#define FF_COMPLIANCE_NORMAL        0
1047
#define FF_COMPLIANCE_INOFFICIAL   -1 ///< Allow inofficial extensions.
1048
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things.
1049

    
1050
    /**
1051
     * qscale offset between IP and B-frames
1052
     * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
1053
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1054
     * - encoding: Set by user.
1055
     * - decoding: unused
1056
     */
1057
    float b_quant_offset;
1058

    
1059
    /**
1060
     * Error resilience; higher values will detect more errors but may
1061
     * misdetect some more or less valid parts as errors.
1062
     * - encoding: unused
1063
     * - decoding: Set by user.
1064
     */
1065
    int error_resilience;
1066
#define FF_ER_CAREFUL         1
1067
#define FF_ER_COMPLIANT       2
1068
#define FF_ER_AGGRESSIVE      3
1069
#define FF_ER_VERY_AGGRESSIVE 4
1070

    
1071
    /**
1072
     * Called at the beginning of each frame to get a buffer for it.
1073
     * If pic.reference is set then the frame will be read later by libavcodec.
1074
     * avcodec_align_dimensions() should be used to find the required width and
1075
     * height, as they normally need to be rounded up to the next multiple of 16.
1076
     * - encoding: unused
1077
     * - decoding: Set by libavcodec., user can override.
1078
     */
1079
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1080

    
1081
    /**
1082
     * Called to release buffers which where allocated with get_buffer.
1083
     * A released buffer can be reused in get_buffer().
1084
     * pic.data[*] must be set to NULL.
1085
     * - encoding: unused
1086
     * - decoding: Set by libavcodec., user can override.
1087
     */
1088
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1089

    
1090
    /**
1091
     * If 1 the stream has a 1 frame delay during decoding.
1092
     * - encoding: Set by libavcodec.
1093
     * - decoding: Set by libavcodec.
1094
     */
1095
    int has_b_frames;
1096

    
1097
    /**
1098
     * number of bytes per packet if constant and known or 0
1099
     * Used by some WAV based audio codecs.
1100
     */
1101
    int block_align;
1102

    
1103
    int parse_only; /* - decoding only: If true, only parsing is done
1104
                       (function avcodec_parse_frame()). The frame
1105
                       data is returned. Only MPEG codecs support this now. */
1106

    
1107
    /**
1108
     * 0-> h263 quant 1-> mpeg quant
1109
     * - encoding: Set by user.
1110
     * - decoding: unused
1111
     */
1112
    int mpeg_quant;
1113

    
1114
    /**
1115
     * pass1 encoding statistics output buffer
1116
     * - encoding: Set by libavcodec.
1117
     * - decoding: unused
1118
     */
1119
    char *stats_out;
1120

    
1121
    /**
1122
     * pass2 encoding statistics input buffer
1123
     * Concatenated stuff from stats_out of pass1 should be placed here.
1124
     * - encoding: Allocated/set/freed by user.
1125
     * - decoding: unused
1126
     */
1127
    char *stats_in;
1128

    
1129
    /**
1130
     * ratecontrol qmin qmax limiting method
1131
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
1132
     * - encoding: Set by user.
1133
     * - decoding: unused
1134
     */
1135
    float rc_qsquish;
1136

    
1137
    float rc_qmod_amp;
1138
    int rc_qmod_freq;
1139

    
1140
    /**
1141
     * ratecontrol override, see RcOverride
1142
     * - encoding: Allocated/set/freed by user.
1143
     * - decoding: unused
1144
     */
1145
    RcOverride *rc_override;
1146
    int rc_override_count;
1147

    
1148
    /**
1149
     * rate control equation
1150
     * - encoding: Set by user
1151
     * - decoding: unused
1152
     */
1153
    char *rc_eq;
1154

    
1155
    /**
1156
     * maximum bitrate
1157
     * - encoding: Set by user.
1158
     * - decoding: unused
1159
     */
1160
    int rc_max_rate;
1161

    
1162
    /**
1163
     * minimum bitrate
1164
     * - encoding: Set by user.
1165
     * - decoding: unused
1166
     */
1167
    int rc_min_rate;
1168

    
1169
    /**
1170
     * decoder bitstream buffer size
1171
     * - encoding: Set by user.
1172
     * - decoding: unused
1173
     */
1174
    int rc_buffer_size;
1175
    float rc_buffer_aggressivity;
1176

    
1177
    /**
1178
     * qscale factor between P and I-frames
1179
     * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
1180
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1181
     * - encoding: Set by user.
1182
     * - decoding: unused
1183
     */
1184
    float i_quant_factor;
1185

    
1186
    /**
1187
     * qscale offset between P and I-frames
1188
     * - encoding: Set by user.
1189
     * - decoding: unused
1190
     */
1191
    float i_quant_offset;
1192

    
1193
    /**
1194
     * initial complexity for pass1 ratecontrol
1195
     * - encoding: Set by user.
1196
     * - decoding: unused
1197
     */
1198
    float rc_initial_cplx;
1199

    
1200
    /**
1201
     * DCT algorithm, see FF_DCT_* below
1202
     * - encoding: Set by user.
1203
     * - decoding: unused
1204
     */
1205
    int dct_algo;
1206
#define FF_DCT_AUTO    0
1207
#define FF_DCT_FASTINT 1
1208
#define FF_DCT_INT     2
1209
#define FF_DCT_MMX     3
1210
#define FF_DCT_MLIB    4
1211
#define FF_DCT_ALTIVEC 5
1212
#define FF_DCT_FAAN    6
1213

    
1214
    /**
1215
     * luminance masking (0-> disabled)
1216
     * - encoding: Set by user.
1217
     * - decoding: unused
1218
     */
1219
    float lumi_masking;
1220

    
1221
    /**
1222
     * temporary complexity masking (0-> disabled)
1223
     * - encoding: Set by user.
1224
     * - decoding: unused
1225
     */
1226
    float temporal_cplx_masking;
1227

    
1228
    /**
1229
     * spatial complexity masking (0-> disabled)
1230
     * - encoding: Set by user.
1231
     * - decoding: unused
1232
     */
1233
    float spatial_cplx_masking;
1234

    
1235
    /**
1236
     * p block masking (0-> disabled)
1237
     * - encoding: Set by user.
1238
     * - decoding: unused
1239
     */
1240
    float p_masking;
1241

    
1242
    /**
1243
     * darkness masking (0-> disabled)
1244
     * - encoding: Set by user.
1245
     * - decoding: unused
1246
     */
1247
    float dark_masking;
1248

    
1249

    
1250
    /* for binary compatibility */
1251
    int unused;
1252

    
1253
    /**
1254
     * IDCT algorithm, see FF_IDCT_* below.
1255
     * - encoding: Set by user.
1256
     * - decoding: Set by user.
1257
     */
1258
    int idct_algo;
1259
#define FF_IDCT_AUTO         0
1260
#define FF_IDCT_INT          1
1261
#define FF_IDCT_SIMPLE       2
1262
#define FF_IDCT_SIMPLEMMX    3
1263
#define FF_IDCT_LIBMPEG2MMX  4
1264
#define FF_IDCT_PS2          5
1265
#define FF_IDCT_MLIB         6
1266
#define FF_IDCT_ARM          7
1267
#define FF_IDCT_ALTIVEC      8
1268
#define FF_IDCT_SH4          9
1269
#define FF_IDCT_SIMPLEARM    10
1270
#define FF_IDCT_H264         11
1271
#define FF_IDCT_VP3          12
1272
#define FF_IDCT_IPP          13
1273
#define FF_IDCT_XVIDMMX      14
1274
#define FF_IDCT_CAVS         15
1275
#define FF_IDCT_SIMPLEARMV5TE 16
1276
#define FF_IDCT_SIMPLEARMV6  17
1277

    
1278
    /**
1279
     * slice count
1280
     * - encoding: Set by libavcodec.
1281
     * - decoding: Set by user (or 0).
1282
     */
1283
    int slice_count;
1284
    /**
1285
     * slice offsets in the frame in bytes
1286
     * - encoding: Set/allocated by libavcodec.
1287
     * - decoding: Set/allocated by user (or NULL).
1288
     */
1289
    int *slice_offset;
1290

    
1291
    /**
1292
     * error concealment flags
1293
     * - encoding: unused
1294
     * - decoding: Set by user.
1295
     */
1296
    int error_concealment;
1297
#define FF_EC_GUESS_MVS   1
1298
#define FF_EC_DEBLOCK     2
1299

    
1300
    /**
1301
     * dsp_mask could be add used to disable unwanted CPU features
1302
     * CPU features (i.e. MMX, SSE. ...)
1303
     *
1304
     * With the FORCE flag you may instead enable given CPU features.
1305
     * (Dangerous: Usable in case of misdetection, improper usage however will
1306
     * result into program crash.)
1307
     */
1308
    unsigned dsp_mask;
1309
#define FF_MM_FORCE    0x80000000 /* Force usage of selected flags (OR) */
1310
    /* lower 16 bits - CPU features */
1311
#ifdef HAVE_MMX
1312
#define FF_MM_MMX      0x0001 /* standard MMX */
1313
#define FF_MM_3DNOW    0x0004 /* AMD 3DNOW */
1314
#define FF_MM_MMXEXT   0x0002 /* SSE integer functions or AMD MMX ext */
1315
#define FF_MM_SSE      0x0008 /* SSE functions */
1316
#define FF_MM_SSE2     0x0010 /* PIV SSE2 functions */
1317
#define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1318
#endif /* HAVE_MMX */
1319
#ifdef HAVE_IWMMXT
1320
#define FF_MM_IWMMXT   0x0100 /* XScale IWMMXT */
1321
#endif /* HAVE_IWMMXT */
1322

    
1323
    /**
1324
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1325
     * - encoding: Set by libavcodec.
1326
     * - decoding: Set by user.
1327
     */
1328
     int bits_per_sample;
1329

    
1330
    /**
1331
     * prediction method (needed for huffyuv)
1332
     * - encoding: Set by user.
1333
     * - decoding: unused
1334
     */
1335
     int prediction_method;
1336
#define FF_PRED_LEFT   0
1337
#define FF_PRED_PLANE  1
1338
#define FF_PRED_MEDIAN 2
1339

    
1340
    /**
1341
     * sample aspect ratio (0 if unknown)
1342
     * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
1343
     * - encoding: Set by user.
1344
     * - decoding: Set by libavcodec.
1345
     */
1346
    AVRational sample_aspect_ratio;
1347

    
1348
    /**
1349
     * the picture in the bitstream
1350
     * - encoding: Set by libavcodec.
1351
     * - decoding: Set by libavcodec.
1352
     */
1353
    AVFrame *coded_frame;
1354

    
1355
    /**
1356
     * debug
1357
     * - encoding: Set by user.
1358
     * - decoding: Set by user.
1359
     */
1360
    int debug;
1361
#define FF_DEBUG_PICT_INFO 1
1362
#define FF_DEBUG_RC        2
1363
#define FF_DEBUG_BITSTREAM 4
1364
#define FF_DEBUG_MB_TYPE   8
1365
#define FF_DEBUG_QP        16
1366
#define FF_DEBUG_MV        32
1367
#define FF_DEBUG_DCT_COEFF 0x00000040
1368
#define FF_DEBUG_SKIP      0x00000080
1369
#define FF_DEBUG_STARTCODE 0x00000100
1370
#define FF_DEBUG_PTS       0x00000200
1371
#define FF_DEBUG_ER        0x00000400
1372
#define FF_DEBUG_MMCO      0x00000800
1373
#define FF_DEBUG_BUGS      0x00001000
1374
#define FF_DEBUG_VIS_QP    0x00002000
1375
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1376

    
1377
    /**
1378
     * debug
1379
     * - encoding: Set by user.
1380
     * - decoding: Set by user.
1381
     */
1382
    int debug_mv;
1383
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1384
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1385
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1386

    
1387
    /**
1388
     * error
1389
     * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
1390
     * - decoding: unused
1391
     */
1392
    uint64_t error[4];
1393

    
1394
    /**
1395
     * minimum MB quantizer
1396
     * - encoding: unused
1397
     * - decoding: unused
1398
     */
1399
    int mb_qmin;
1400

    
1401
    /**
1402
     * maximum MB quantizer
1403
     * - encoding: unused
1404
     * - decoding: unused
1405
     */
1406
    int mb_qmax;
1407

    
1408
    /**
1409
     * motion estimation comparison function
1410
     * - encoding: Set by user.
1411
     * - decoding: unused
1412
     */
1413
    int me_cmp;
1414
    /**
1415
     * subpixel motion estimation comparison function
1416
     * - encoding: Set by user.
1417
     * - decoding: unused
1418
     */
1419
    int me_sub_cmp;
1420
    /**
1421
     * macroblock comparison function (not supported yet)
1422
     * - encoding: Set by user.
1423
     * - decoding: unused
1424
     */
1425
    int mb_cmp;
1426
    /**
1427
     * interlaced DCT comparison function
1428
     * - encoding: Set by user.
1429
     * - decoding: unused
1430
     */
1431
    int ildct_cmp;
1432
#define FF_CMP_SAD  0
1433
#define FF_CMP_SSE  1
1434
#define FF_CMP_SATD 2
1435
#define FF_CMP_DCT  3
1436
#define FF_CMP_PSNR 4
1437
#define FF_CMP_BIT  5
1438
#define FF_CMP_RD   6
1439
#define FF_CMP_ZERO 7
1440
#define FF_CMP_VSAD 8
1441
#define FF_CMP_VSSE 9
1442
#define FF_CMP_NSSE 10
1443
#define FF_CMP_W53  11
1444
#define FF_CMP_W97  12
1445
#define FF_CMP_DCTMAX 13
1446
#define FF_CMP_DCT264 14
1447
#define FF_CMP_CHROMA 256
1448

    
1449
    /**
1450
     * ME diamond size & shape
1451
     * - encoding: Set by user.
1452
     * - decoding: unused
1453
     */
1454
    int dia_size;
1455

    
1456
    /**
1457
     * amount of previous MV predictors (2a+1 x 2a+1 square)
1458
     * - encoding: Set by user.
1459
     * - decoding: unused
1460
     */
1461
    int last_predictor_count;
1462

    
1463
    /**
1464
     * prepass for motion estimation
1465
     * - encoding: Set by user.
1466
     * - decoding: unused
1467
     */
1468
    int pre_me;
1469

    
1470
    /**
1471
     * motion estimation prepass comparison function
1472
     * - encoding: Set by user.
1473
     * - decoding: unused
1474
     */
1475
    int me_pre_cmp;
1476

    
1477
    /**
1478
     * ME prepass diamond size & shape
1479
     * - encoding: Set by user.
1480
     * - decoding: unused
1481
     */
1482
    int pre_dia_size;
1483

    
1484
    /**
1485
     * subpel ME quality
1486
     * - encoding: Set by user.
1487
     * - decoding: unused
1488
     */
1489
    int me_subpel_quality;
1490

    
1491
    /**
1492
     * callback to negotiate the pixelFormat
1493
     * @param fmt is the list of formats which are supported by the codec,
1494
     * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
1495
     * The first is always the native one.
1496
     * @return the chosen format
1497
     * - encoding: unused
1498
     * - decoding: Set by user, if not set the native format will be chosen.
1499
     */
1500
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1501

    
1502
    /**
1503
     * DTG active format information (additional aspect ratio
1504
     * information only used in DVB MPEG-2 transport streams)
1505
     * 0 if not set.
1506
     *
1507
     * - encoding: unused
1508
     * - decoding: Set by decoder.
1509
     */
1510
    int dtg_active_format;
1511
#define FF_DTG_AFD_SAME         8
1512
#define FF_DTG_AFD_4_3          9
1513
#define FF_DTG_AFD_16_9         10
1514
#define FF_DTG_AFD_14_9         11
1515
#define FF_DTG_AFD_4_3_SP_14_9  13
1516
#define FF_DTG_AFD_16_9_SP_14_9 14
1517
#define FF_DTG_AFD_SP_4_3       15
1518

    
1519
    /**
1520
     * maximum motion estimation search range in subpel units
1521
     * If 0 then no limit.
1522
     *
1523
     * - encoding: Set by user.
1524
     * - decoding: unused
1525
     */
1526
    int me_range;
1527

    
1528
    /**
1529
     * intra quantizer bias
1530
     * - encoding: Set by user.
1531
     * - decoding: unused
1532
     */
1533
    int intra_quant_bias;
1534
#define FF_DEFAULT_QUANT_BIAS 999999
1535

    
1536
    /**
1537
     * inter quantizer bias
1538
     * - encoding: Set by user.
1539
     * - decoding: unused
1540
     */
1541
    int inter_quant_bias;
1542

    
1543
    /**
1544
     * color table ID
1545
     * - encoding: unused
1546
     * - decoding: Which clrtable should be used for 8bit RGB images.
1547
     *             Tables have to be stored somewhere. FIXME
1548
     */
1549
    int color_table_id;
1550

    
1551
    /**
1552
     * internal_buffer count
1553
     * Don't touch, used by libavcodec default_get_buffer().
1554
     */
1555
    int internal_buffer_count;
1556

    
1557
    /**
1558
     * internal_buffers
1559
     * Don't touch, used by libavcodec default_get_buffer().
1560
     */
1561
    void *internal_buffer;
1562

    
1563
#define FF_LAMBDA_SHIFT 7
1564
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1565
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1566
#define FF_LAMBDA_MAX (256*128-1)
1567

    
1568
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1569
    /**
1570
     * Global quality for codecs which cannot change it per frame.
1571
     * This should be proportional to MPEG-1/2/4 qscale.
1572
     * - encoding: Set by user.
1573
     * - decoding: unused
1574
     */
1575
    int global_quality;
1576

    
1577
#define FF_CODER_TYPE_VLC       0
1578
#define FF_CODER_TYPE_AC        1
1579
#define FF_CODER_TYPE_RAW       2
1580
#define FF_CODER_TYPE_RLE       3
1581
#define FF_CODER_TYPE_DEFLATE   4
1582
    /**
1583
     * coder type
1584
     * - encoding: Set by user.
1585
     * - decoding: unused
1586
     */
1587
    int coder_type;
1588

    
1589
    /**
1590
     * context model
1591
     * - encoding: Set by user.
1592
     * - decoding: unused
1593
     */
1594
    int context_model;
1595
#if 0
1596
    /**
1597
     *
1598
     * - encoding: unused
1599
     * - decoding: Set by user.
1600
     */
1601
    uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1602
#endif
1603

    
1604
    /**
1605
     * slice flags
1606
     * - encoding: unused
1607
     * - decoding: Set by user.
1608
     */
1609
    int slice_flags;
1610
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1611
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1612
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1613

    
1614
    /**
1615
     * XVideo Motion Acceleration
1616
     * - encoding: forbidden
1617
     * - decoding: set by decoder
1618
     */
1619
    int xvmc_acceleration;
1620

    
1621
    /**
1622
     * macroblock decision mode
1623
     * - encoding: Set by user.
1624
     * - decoding: unused
1625
     */
1626
    int mb_decision;
1627
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1628
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1629
#define FF_MB_DECISION_RD     2        ///< rate distoration
1630

    
1631
    /**
1632
     * custom intra quantization matrix
1633
     * - encoding: Set by user, can be NULL.
1634
     * - decoding: Set by libavcodec.
1635
     */
1636
    uint16_t *intra_matrix;
1637

    
1638
    /**
1639
     * custom inter quantization matrix
1640
     * - encoding: Set by user, can be NULL.
1641
     * - decoding: Set by libavcodec.
1642
     */
1643
    uint16_t *inter_matrix;
1644

    
1645
    /**
1646
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1647
     * This is used to work around some encoder bugs.
1648
     * - encoding: unused
1649
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
1650
     */
1651
    unsigned int stream_codec_tag;
1652

    
1653
    /**
1654
     * scene change detection threshold
1655
     * 0 is default, larger means fewer detected scene changes.
1656
     * - encoding: Set by user.
1657
     * - decoding: unused
1658
     */
1659
    int scenechange_threshold;
1660

    
1661
    /**
1662
     * minimum Lagrange multipler
1663
     * - encoding: Set by user.
1664
     * - decoding: unused
1665
     */
1666
    int lmin;
1667

    
1668
    /**
1669
     * maximum Lagrange multipler
1670
     * - encoding: Set by user.
1671
     * - decoding: unused
1672
     */
1673
    int lmax;
1674

    
1675
    /**
1676
     * palette control structure
1677
     * - encoding: ??? (no palette-enabled encoder yet)
1678
     * - decoding: Set by user.
1679
     */
1680
    struct AVPaletteControl *palctrl;
1681

    
1682
    /**
1683
     * noise reduction strength
1684
     * - encoding: Set by user.
1685
     * - decoding: unused
1686
     */
1687
    int noise_reduction;
1688

    
1689
    /**
1690
     * Called at the beginning of a frame to get cr buffer for it.
1691
     * Buffer type (size, hints) must be the same. libavcodec won't check it.
1692
     * libavcodec will pass previous buffer in pic, function should return
1693
     * same buffer or new buffer with old frame "painted" into it.
1694
     * If pic.data[0] == NULL must behave like get_buffer().
1695
     * - encoding: unused
1696
     * - decoding: Set by libavcodec., user can override
1697
     */
1698
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1699

    
1700
    /**
1701
     * Number of bits which should be loaded into the rc buffer before decoding starts.
1702
     * - encoding: Set by user.
1703
     * - decoding: unused
1704
     */
1705
    int rc_initial_buffer_occupancy;
1706

    
1707
    /**
1708
     *
1709
     * - encoding: Set by user.
1710
     * - decoding: unused
1711
     */
1712
    int inter_threshold;
1713

    
1714
    /**
1715
     * CODEC_FLAG2_*
1716
     * - encoding: Set by user.
1717
     * - decoding: Set by user.
1718
     */
1719
    int flags2;
1720

    
1721
    /**
1722
     * Simulates errors in the bitstream to test error concealment.
1723
     * - encoding: Set by user.
1724
     * - decoding: unused
1725
     */
1726
    int error_rate;
1727

    
1728
    /**
1729
     * MP3 antialias algorithm, see FF_AA_* below.
1730
     * - encoding: unused
1731
     * - decoding: Set by user.
1732
     */
1733
    int antialias_algo;
1734
#define FF_AA_AUTO    0
1735
#define FF_AA_FASTINT 1 //not implemented yet
1736
#define FF_AA_INT     2
1737
#define FF_AA_FLOAT   3
1738
    /**
1739
     * quantizer noise shaping
1740
     * - encoding: Set by user.
1741
     * - decoding: unused
1742
     */
1743
    int quantizer_noise_shaping;
1744

    
1745
    /**
1746
     * thread count
1747
     * is used to decide how many independent tasks should be passed to execute()
1748
     * - encoding: Set by user.
1749
     * - decoding: Set by user.
1750
     */
1751
    int thread_count;
1752

    
1753
    /**
1754
     * The codec may call this to execute several independent things.
1755
     * It will return only after finishing all tasks.
1756
     * The user may replace this with some multithreaded implementation,
1757
     * the default implementation will execute the parts serially.
1758
     * @param count the number of things to execute
1759
     * - encoding: Set by libavcodec, user can override.
1760
     * - decoding: Set by libavcodec, user can override.
1761
     */
1762
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1763

    
1764
    /**
1765
     * thread opaque
1766
     * Can be used by execute() to store some per AVCodecContext stuff.
1767
     * - encoding: set by execute()
1768
     * - decoding: set by execute()
1769
     */
1770
    void *thread_opaque;
1771

    
1772
    /**
1773
     * Motion estimation threshold below which no motion estimation is
1774
     * performed, but instead the user specified motion vectors are used.
1775
     *
1776
     * - encoding: Set by user.
1777
     * - decoding: unused
1778
     */
1779
     int me_threshold;
1780

    
1781
    /**
1782
     * Macroblock threshold below which the user specified macroblock types will be used.
1783
     * - encoding: Set by user.
1784
     * - decoding: unused
1785
     */
1786
     int mb_threshold;
1787

    
1788
    /**
1789
     * precision of the intra DC coefficient - 8
1790
     * - encoding: Set by user.
1791
     * - decoding: unused
1792
     */
1793
     int intra_dc_precision;
1794

    
1795
    /**
1796
     * noise vs. sse weight for the nsse comparsion function
1797
     * - encoding: Set by user.
1798
     * - decoding: unused
1799
     */
1800
     int nsse_weight;
1801

    
1802
    /**
1803
     * Number of macroblock rows at the top which are skipped.
1804
     * - encoding: unused
1805
     * - decoding: Set by user.
1806
     */
1807
     int skip_top;
1808

    
1809
    /**
1810
     * Number of macroblock rows at the bottom which are skipped.
1811
     * - encoding: unused
1812
     * - decoding: Set by user.
1813
     */
1814
     int skip_bottom;
1815

    
1816
    /**
1817
     * profile
1818
     * - encoding: Set by user.
1819
     * - decoding: Set by libavcodec.
1820
     */
1821
     int profile;
1822
#define FF_PROFILE_UNKNOWN -99
1823

    
1824
    /**
1825
     * level
1826
     * - encoding: Set by user.
1827
     * - decoding: Set by libavcodec.
1828
     */
1829
     int level;
1830
#define FF_LEVEL_UNKNOWN -99
1831

    
1832
    /**
1833
     * low resolution decoding, 1-> 1/2 size, 2->1/4 size
1834
     * - encoding: unused
1835
     * - decoding: Set by user.
1836
     */
1837
     int lowres;
1838

    
1839
    /**
1840
     * Bitstream width / height, may be different from width/height if lowres
1841
     * or other things are used.
1842
     * - encoding: unused
1843
     * - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
1844
     */
1845
    int coded_width, coded_height;
1846

    
1847
    /**
1848
     * frame skip threshold
1849
     * - encoding: Set by user.
1850
     * - decoding: unused
1851
     */
1852
    int frame_skip_threshold;
1853

    
1854
    /**
1855
     * frame skip factor
1856
     * - encoding: Set by user.
1857
     * - decoding: unused
1858
     */
1859
    int frame_skip_factor;
1860

    
1861
    /**
1862
     * frame skip exponent
1863
     * - encoding: Set by user.
1864
     * - decoding: unused
1865
     */
1866
    int frame_skip_exp;
1867

    
1868
    /**
1869
     * frame skip comparison function
1870
     * - encoding: Set by user.
1871
     * - decoding: unused
1872
     */
1873
    int frame_skip_cmp;
1874

    
1875
    /**
1876
     * Border processing masking, raises the quantizer for mbs on the borders
1877
     * of the picture.
1878
     * - encoding: Set by user.
1879
     * - decoding: unused
1880
     */
1881
    float border_masking;
1882

    
1883
    /**
1884
     * minimum MB lagrange multipler
1885
     * - encoding: Set by user.
1886
     * - decoding: unused
1887
     */
1888
    int mb_lmin;
1889

    
1890
    /**
1891
     * maximum MB lagrange multipler
1892
     * - encoding: Set by user.
1893
     * - decoding: unused
1894
     */
1895
    int mb_lmax;
1896

    
1897
    /**
1898
     *
1899
     * - encoding: Set by user.
1900
     * - decoding: unused
1901
     */
1902
    int me_penalty_compensation;
1903

    
1904
    /**
1905
     *
1906
     * - encoding: unused
1907
     * - decoding: Set by user.
1908
     */
1909
    enum AVDiscard skip_loop_filter;
1910

    
1911
    /**
1912
     *
1913
     * - encoding: unused
1914
     * - decoding: Set by user.
1915
     */
1916
    enum AVDiscard skip_idct;
1917

    
1918
    /**
1919
     *
1920
     * - encoding: unused
1921
     * - decoding: Set by user.
1922
     */
1923
    enum AVDiscard skip_frame;
1924

    
1925
    /**
1926
     *
1927
     * - encoding: Set by user.
1928
     * - decoding: unused
1929
     */
1930
    int bidir_refine;
1931

    
1932
    /**
1933
     *
1934
     * - encoding: Set by user.
1935
     * - decoding: unused
1936
     */
1937
    int brd_scale;
1938

    
1939
    /**
1940
     * constant rate factor - quality-based VBR - values ~correspond to qps
1941
     * - encoding: Set by user.
1942
     * - decoding: unused
1943
     */
1944
    float crf;
1945

    
1946
    /**
1947
     * constant quantization parameter rate control method
1948
     * - encoding: Set by user.
1949
     * - decoding: unused
1950
     */
1951
    int cqp;
1952

    
1953
    /**
1954
     * minimum GOP size
1955
     * - encoding: Set by user.
1956
     * - decoding: unused
1957
     */
1958
    int keyint_min;
1959

    
1960
    /**
1961
     * number of reference frames
1962
     * - encoding: Set by user.
1963
     * - decoding: unused
1964
     */
1965
    int refs;
1966

    
1967
    /**
1968
     * chroma qp offset from luma
1969
     * - encoding: Set by user.
1970
     * - decoding: unused
1971
     */
1972
    int chromaoffset;
1973

    
1974
    /**
1975
     * Influences how often B-frames are used.
1976
     * - encoding: Set by user.
1977
     * - decoding: unused
1978
     */
1979
    int bframebias;
1980

    
1981
    /**
1982
     * trellis RD quantization
1983
     * - encoding: Set by user.
1984
     * - decoding: unused
1985
     */
1986
    int trellis;
1987

    
1988
    /**
1989
     * Reduce fluctuations in qp (before curve compression).
1990
     * - encoding: Set by user.
1991
     * - decoding: unused
1992
     */
1993
    float complexityblur;
1994

    
1995
    /**
1996
     * in-loop deblocking filter alphac0 parameter
1997
     * alpha is in the range -6...6
1998
     * - encoding: Set by user.
1999
     * - decoding: unused
2000
     */
2001
    int deblockalpha;
2002

    
2003
    /**
2004
     * in-loop deblocking filter beta parameter
2005
     * beta is in the range -6...6
2006
     * - encoding: Set by user.
2007
     * - decoding: unused
2008
     */
2009
    int deblockbeta;
2010

    
2011
    /**
2012
     * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
2013
     * - encoding: Set by user.
2014
     * - decoding: unused
2015
     */
2016
    int partitions;
2017
#define X264_PART_I4X4 0x001  /* Analyse i4x4 */
2018
#define X264_PART_I8X8 0x002  /* Analyse i8x8 (requires 8x8 transform) */
2019
#define X264_PART_P8X8 0x010  /* Analyse p16x8, p8x16 and p8x8 */
2020
#define X264_PART_P4X4 0x020  /* Analyse p8x4, p4x8, p4x4 */
2021
#define X264_PART_B8X8 0x100  /* Analyse b16x8, b8x16 and b8x8 */
2022

    
2023
    /**
2024
     * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal)
2025
     * - encoding: Set by user.
2026
     * - decoding: unused
2027
     */
2028
    int directpred;
2029

    
2030
    /**
2031
     * Audio cutoff bandwidth (0 means "automatic"), currently used only by FAAC.
2032
     * - encoding: Set by user.
2033
     * - decoding: unused
2034
     */
2035
    int cutoff;
2036

    
2037
    /**
2038
     * Multiplied by qscale for each frame and added to scene_change_score.
2039
     * - encoding: Set by user.
2040
     * - decoding: unused
2041
     */
2042
    int scenechange_factor;
2043

    
2044
    /**
2045
     *
2046
     * Note: Value depends upon the compare function used for fullpel ME.
2047
     * - encoding: Set by user.
2048
     * - decoding: unused
2049
     */
2050
    int mv0_threshold;
2051

    
2052
    /**
2053
     * Adjusts sensitivity of b_frame_strategy 1.
2054
     * - encoding: Set by user.
2055
     * - decoding: unused
2056
     */
2057
    int b_sensitivity;
2058

    
2059
    /**
2060
     * - encoding: Set by user.
2061
     * - decoding: unused
2062
     */
2063
    int compression_level;
2064
#define FF_COMPRESSION_DEFAULT -1
2065

    
2066
    /**
2067
     * Sets whether to use LPC mode - used by FLAC encoder.
2068
     * - encoding: Set by user.
2069
     * - decoding: unused
2070
     */
2071
    int use_lpc;
2072

    
2073
    /**
2074
     * LPC coefficient precision - used by FLAC encoder
2075
     * - encoding: Set by user.
2076
     * - decoding: unused
2077
     */
2078
    int lpc_coeff_precision;
2079

    
2080
    /**
2081
     * - encoding: Set by user.
2082
     * - decoding: unused
2083
     */
2084
    int min_prediction_order;
2085

    
2086
    /**
2087
     * - encoding: Set by user.
2088
     * - decoding: unused
2089
     */
2090
    int max_prediction_order;
2091

    
2092
    /**
2093
     * search method for selecting prediction order
2094
     * - encoding: Set by user.
2095
     * - decoding: unused
2096
     */
2097
    int prediction_order_method;
2098

    
2099
    /**
2100
     * - encoding: Set by user.
2101
     * - decoding: unused
2102
     */
2103
    int min_partition_order;
2104

    
2105
    /**
2106
     * - encoding: Set by user.
2107
     * - decoding: unused
2108
     */
2109
    int max_partition_order;
2110

    
2111
    /**
2112
     * GOP timecode frame start number, in non drop frame format
2113
     * - encoding: Set by user.
2114
     * - decoding: unused
2115
     */
2116
    int64_t timecode_frame_start;
2117
} AVCodecContext;
2118

    
2119
/**
2120
 * AVCodec.
2121
 */
2122
typedef struct AVCodec {
2123
    const char *name;
2124
    enum CodecType type;
2125
    enum CodecID id;
2126
    int priv_data_size;
2127
    int (*init)(AVCodecContext *);
2128
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2129
    int (*close)(AVCodecContext *);
2130
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2131
                  uint8_t *buf, int buf_size);
2132
    int capabilities;
2133
    struct AVCodec *next;
2134
    void (*flush)(AVCodecContext *);
2135
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2136
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2137
} AVCodec;
2138

    
2139
/**
2140
 * four components are given, that's all.
2141
 * the last component is alpha
2142
 */
2143
typedef struct AVPicture {
2144
    uint8_t *data[4];
2145
    int linesize[4];       ///< number of bytes per line
2146
} AVPicture;
2147

    
2148
/**
2149
 * AVPaletteControl
2150
 * This structure defines a method for communicating palette changes
2151
 * between and demuxer and a decoder.
2152
 *
2153
 * @deprecated Use AVPacket to send palette changes instead.
2154
 * This is totally broken.
2155
 */
2156
#define AVPALETTE_SIZE 1024
2157
#define AVPALETTE_COUNT 256
2158
typedef struct AVPaletteControl {
2159

    
2160
    /* Demuxer sets this to 1 to indicate the palette has changed;
2161
     * decoder resets to 0. */
2162
    int palette_changed;
2163

    
2164
    /* 4-byte ARGB palette entries, stored in native byte order; note that
2165
     * the individual palette components should be on a 8-bit scale; if
2166
     * the palette data comes from an IBM VGA native format, the component
2167
     * data is probably 6 bits in size and needs to be scaled. */
2168
    unsigned int palette[AVPALETTE_COUNT];
2169

    
2170
} AVPaletteControl attribute_deprecated;
2171

    
2172
typedef struct AVSubtitleRect {
2173
    uint16_t x;
2174
    uint16_t y;
2175
    uint16_t w;
2176
    uint16_t h;
2177
    uint16_t nb_colors;
2178
    int linesize;
2179
    uint32_t *rgba_palette;
2180
    uint8_t *bitmap;
2181
} AVSubtitleRect;
2182

    
2183
typedef struct AVSubtitle {
2184
    uint16_t format; /* 0 = graphics */
2185
    uint32_t start_display_time; /* relative to packet pts, in ms */
2186
    uint32_t end_display_time; /* relative to packet pts, in ms */
2187
    uint32_t num_rects;
2188
    AVSubtitleRect *rects;
2189
} AVSubtitle;
2190

    
2191
extern AVCodec ac3_encoder;
2192
extern AVCodec asv1_encoder;
2193
extern AVCodec asv2_encoder;
2194
extern AVCodec bmp_encoder;
2195
extern AVCodec dvvideo_encoder;
2196
extern AVCodec ffv1_encoder;
2197
extern AVCodec ffvhuff_encoder;
2198
extern AVCodec flac_encoder;
2199
extern AVCodec flashsv_encoder;
2200
extern AVCodec flv_encoder;
2201
extern AVCodec gif_encoder;
2202
extern AVCodec h261_encoder;
2203
extern AVCodec h263_encoder;
2204
extern AVCodec h263p_encoder;
2205
extern AVCodec h264_encoder;
2206
extern AVCodec huffyuv_encoder;
2207
extern AVCodec jpegls_encoder;
2208
extern AVCodec ljpeg_encoder;
2209
extern AVCodec mdec_encoder;
2210
extern AVCodec mjpeg_encoder;
2211
extern AVCodec mp2_encoder;
2212
extern AVCodec mpeg1video_encoder;
2213
extern AVCodec mpeg2video_encoder;
2214
extern AVCodec mpeg4_encoder;
2215
extern AVCodec msmpeg4v1_encoder;
2216
extern AVCodec msmpeg4v2_encoder;
2217
extern AVCodec msmpeg4v3_encoder;
2218
extern AVCodec pam_encoder;
2219
extern AVCodec pbm_encoder;
2220
extern AVCodec pgm_encoder;
2221
extern AVCodec pgmyuv_encoder;
2222
extern AVCodec png_encoder;
2223
extern AVCodec ppm_encoder;
2224
extern AVCodec rv10_encoder;
2225
extern AVCodec rv20_encoder;
2226
extern AVCodec sgi_encoder;
2227
extern AVCodec snow_encoder;
2228
extern AVCodec sonic_encoder;
2229
extern AVCodec sonic_ls_encoder;
2230
extern AVCodec svq1_encoder;
2231
extern AVCodec targa_encoder;
2232
extern AVCodec tiff_encoder;
2233
extern AVCodec vcr1_encoder;
2234
extern AVCodec vorbis_encoder;
2235
extern AVCodec wmav1_encoder;
2236
extern AVCodec wmav2_encoder;
2237
extern AVCodec wmv1_encoder;
2238
extern AVCodec wmv2_encoder;
2239
extern AVCodec zmbv_encoder;
2240

    
2241
extern AVCodec aasc_decoder;
2242
extern AVCodec alac_decoder;
2243
extern AVCodec asv1_decoder;
2244
extern AVCodec asv2_decoder;
2245
extern AVCodec atrac3_decoder;
2246
extern AVCodec avs_decoder;
2247
extern AVCodec bethsoftvid_decoder;
2248
extern AVCodec bmp_decoder;
2249
extern AVCodec c93_decoder;
2250
extern AVCodec cavs_decoder;
2251
extern AVCodec cinepak_decoder;
2252
extern AVCodec cljr_decoder;
2253
extern AVCodec cook_decoder;
2254
extern AVCodec cscd_decoder;
2255
extern AVCodec cyuv_decoder;
2256
extern AVCodec dca_decoder;
2257
extern AVCodec dnxhd_decoder;
2258
extern AVCodec dsicinaudio_decoder;
2259
extern AVCodec dsicinvideo_decoder;
2260
extern AVCodec dvvideo_decoder;
2261
extern AVCodec dxa_decoder;
2262
extern AVCodec eightbps_decoder;
2263
extern AVCodec ffv1_decoder;
2264
extern AVCodec ffvhuff_decoder;
2265
extern AVCodec flac_decoder;
2266
extern AVCodec flashsv_decoder;
2267
extern AVCodec flic_decoder;
2268
extern AVCodec flv_decoder;
2269
extern AVCodec fourxm_decoder;
2270
extern AVCodec fraps_decoder;
2271
extern AVCodec gif_decoder;
2272
extern AVCodec h261_decoder;
2273
extern AVCodec h263_decoder;
2274
extern AVCodec h263i_decoder;
2275
extern AVCodec h264_decoder;
2276
extern AVCodec huffyuv_decoder;
2277
extern AVCodec idcin_decoder;
2278
extern AVCodec imc_decoder;
2279
extern AVCodec indeo2_decoder;
2280
extern AVCodec indeo3_decoder;
2281
extern AVCodec interplay_dpcm_decoder;
2282
extern AVCodec interplay_video_decoder;
2283
extern AVCodec kmvc_decoder;
2284
extern AVCodec loco_decoder;
2285
extern AVCodec mace3_decoder;
2286
extern AVCodec mace6_decoder;
2287
extern AVCodec mdec_decoder;
2288
extern AVCodec mjpeg_decoder;
2289
extern AVCodec mjpegb_decoder;
2290
extern AVCodec mmvideo_decoder;
2291
extern AVCodec mp2_decoder;
2292
extern AVCodec mp3_decoder;
2293
extern AVCodec mp3adu_decoder;
2294
extern AVCodec mp3on4_decoder;
2295
extern AVCodec mpc7_decoder;
2296
extern AVCodec mpeg1video_decoder;
2297
extern AVCodec mpeg2video_decoder;
2298
extern AVCodec mpeg4_decoder;
2299
extern AVCodec mpeg_xvmc_decoder;
2300
extern AVCodec mpegvideo_decoder;
2301
extern AVCodec msmpeg4v1_decoder;
2302
extern AVCodec msmpeg4v2_decoder;
2303
extern AVCodec msmpeg4v3_decoder;
2304
extern AVCodec msrle_decoder;
2305
extern AVCodec msvideo1_decoder;
2306
extern AVCodec mszh_decoder;
2307
extern AVCodec nuv_decoder;
2308
extern AVCodec png_decoder;
2309
extern AVCodec ptx_decoder;
2310
extern AVCodec qdm2_decoder;
2311
extern AVCodec qdraw_decoder;
2312
extern AVCodec qpeg_decoder;
2313
extern AVCodec qtrle_decoder;
2314
extern AVCodec ra_144_decoder;
2315
extern AVCodec ra_288_decoder;
2316
extern AVCodec roq_decoder;
2317
extern AVCodec roq_dpcm_decoder;
2318
extern AVCodec rpza_decoder;
2319
extern AVCodec rv10_decoder;
2320
extern AVCodec rv20_decoder;
2321
extern AVCodec rv30_decoder;
2322
extern AVCodec rv40_decoder;
2323
extern AVCodec sgi_decoder;
2324
extern AVCodec shorten_decoder;
2325
extern AVCodec smackaud_decoder;
2326
extern AVCodec smacker_decoder;
2327
extern AVCodec smc_decoder;
2328
extern AVCodec snow_decoder;
2329
extern AVCodec sol_dpcm_decoder;
2330
extern AVCodec sonic_decoder;
2331
extern AVCodec sp5x_decoder;
2332
extern AVCodec svq1_decoder;
2333
extern AVCodec svq3_decoder;
2334
extern AVCodec targa_decoder;
2335
extern AVCodec theora_decoder;
2336
extern AVCodec thp_decoder;
2337
extern AVCodec tiertexseqvideo_decoder;
2338
extern AVCodec tiff_decoder;
2339
extern AVCodec truemotion1_decoder;
2340
extern AVCodec truemotion2_decoder;
2341
extern AVCodec truespeech_decoder;
2342
extern AVCodec tscc_decoder;
2343
extern AVCodec tta_decoder;
2344
extern AVCodec ulti_decoder;
2345
extern AVCodec vc1_decoder;
2346
extern AVCodec vcr1_decoder;
2347
extern AVCodec vmdaudio_decoder;
2348
extern AVCodec vmdvideo_decoder;
2349
extern AVCodec vmnc_decoder;
2350
extern AVCodec vorbis_decoder;
2351
extern AVCodec vp3_decoder;
2352
extern AVCodec vp5_decoder;
2353
extern AVCodec vp6_decoder;
2354
extern AVCodec vp6f_decoder;
2355
extern AVCodec vqa_decoder;
2356
extern AVCodec wavpack_decoder;
2357
extern AVCodec wmav1_decoder;
2358
extern AVCodec wmav2_decoder;
2359
extern AVCodec wmv1_decoder;
2360
extern AVCodec wmv2_decoder;
2361
extern AVCodec wmv3_decoder;
2362
extern AVCodec wnv1_decoder;
2363
extern AVCodec ws_snd1_decoder;
2364
extern AVCodec xan_dpcm_decoder;
2365
extern AVCodec xan_wc3_decoder;
2366
extern AVCodec xl_decoder;
2367
extern AVCodec zmbv_decoder;
2368

    
2369
/* PCM codecs */
2370
#define PCM_CODEC(id, name) \
2371
extern AVCodec name ## _decoder; \
2372
extern AVCodec name ## _encoder
2373

    
2374
PCM_CODEC(CODEC_ID_PCM_ALAW,    pcm_alaw);
2375
PCM_CODEC(CODEC_ID_PCM_MULAW,   pcm_mulaw);
2376
PCM_CODEC(CODEC_ID_PCM_S8,      pcm_s8);
2377
PCM_CODEC(CODEC_ID_PCM_S16BE,   pcm_s16be);
2378
PCM_CODEC(CODEC_ID_PCM_S16LE,   pcm_s16le);
2379
PCM_CODEC(CODEC_ID_PCM_S24BE,   pcm_s24be);
2380
PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2381
PCM_CODEC(CODEC_ID_PCM_S24LE,   pcm_s24le);
2382
PCM_CODEC(CODEC_ID_PCM_S32BE,   pcm_s32be);
2383
PCM_CODEC(CODEC_ID_PCM_S32LE,   pcm_s32le);
2384
PCM_CODEC(CODEC_ID_PCM_U8,      pcm_u8);
2385
PCM_CODEC(CODEC_ID_PCM_U16BE,   pcm_u16be);
2386
PCM_CODEC(CODEC_ID_PCM_U16LE,   pcm_u16le);
2387
PCM_CODEC(CODEC_ID_PCM_U24BE,   pcm_u24be);
2388
PCM_CODEC(CODEC_ID_PCM_U24LE,   pcm_u24le);
2389
PCM_CODEC(CODEC_ID_PCM_U32BE,   pcm_u32be);
2390
PCM_CODEC(CODEC_ID_PCM_U32LE,   pcm_u32le);
2391

    
2392
/* ADPCM codecs */
2393

    
2394
PCM_CODEC(CODEC_ID_ADPCM_4XM,     adpcm_4xm);
2395
PCM_CODEC(CODEC_ID_ADPCM_ADX,     adpcm_adx);
2396
PCM_CODEC(CODEC_ID_ADPCM_CT,      adpcm_ct);
2397
PCM_CODEC(CODEC_ID_ADPCM_EA,      adpcm_ea);
2398
PCM_CODEC(CODEC_ID_ADPCM_G726,    adpcm_g726);
2399
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2400
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2401
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT,  adpcm_ima_qt);
2402
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2403
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS,  adpcm_ima_ws);
2404
PCM_CODEC(CODEC_ID_ADPCM_MS,      adpcm_ms);
2405
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2406
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2407
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2408
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG,  adpcm_ima_smjpeg);
2409
PCM_CODEC(CODEC_ID_ADPCM_SWF,     adpcm_swf);
2410
PCM_CODEC(CODEC_ID_ADPCM_THP,     adpcm_thp);
2411
PCM_CODEC(CODEC_ID_ADPCM_XA,      adpcm_xa);
2412
PCM_CODEC(CODEC_ID_ADPCM_YAMAHA,  adpcm_yamaha);
2413

    
2414
#undef PCM_CODEC
2415

    
2416
/* dummy raw video codec */
2417
extern AVCodec rawvideo_decoder;
2418
extern AVCodec rawvideo_encoder;
2419

    
2420
/* the following codecs use external libs */
2421
extern AVCodec aac_decoder;
2422
extern AVCodec amr_nb_decoder;
2423
extern AVCodec amr_nb_encoder;
2424
extern AVCodec amr_wb_decoder;
2425
extern AVCodec amr_wb_encoder;
2426
extern AVCodec dts_decoder;
2427
extern AVCodec faac_encoder;
2428
extern AVCodec liba52_decoder;
2429
extern AVCodec libgsm_decoder;
2430
extern AVCodec libgsm_encoder;
2431
extern AVCodec libgsm_ms_decoder;
2432
extern AVCodec libgsm_ms_encoder;
2433
extern AVCodec libtheora_encoder;
2434
extern AVCodec mp3lame_encoder;
2435
extern AVCodec mpeg4aac_decoder;
2436
extern AVCodec oggvorbis_decoder;
2437
extern AVCodec oggvorbis_encoder;
2438
extern AVCodec x264_encoder;
2439
extern AVCodec xvid_encoder;
2440
extern AVCodec zlib_decoder;
2441
extern AVCodec zlib_encoder;
2442

    
2443
/* subtitles */
2444
extern AVCodec dvbsub_decoder;
2445
extern AVCodec dvbsub_encoder;
2446
extern AVCodec dvdsub_decoder;
2447
extern AVCodec dvdsub_encoder;
2448

    
2449
/* resample.c */
2450

    
2451
struct ReSampleContext;
2452
struct AVResampleContext;
2453

    
2454
typedef struct ReSampleContext ReSampleContext;
2455

    
2456
ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2457
                                     int output_rate, int input_rate);
2458
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2459
void audio_resample_close(ReSampleContext *s);
2460

    
2461
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2462
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2463
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2464
void av_resample_close(struct AVResampleContext *c);
2465

    
2466
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
2467
/* YUV420 format is assumed ! */
2468

    
2469
/**
2470
 * @deprecated Use the software scaler (swscale) instead.
2471
 */
2472
struct ImgReSampleContext attribute_deprecated;
2473

    
2474
/**
2475
 * @deprecated Use the software scaler (swscale) instead.
2476
 */
2477
typedef struct ImgReSampleContext ImgReSampleContext attribute_deprecated;
2478

    
2479
/**
2480
 * @deprecated Use the software scaler (swscale) instead.
2481
 */
2482
attribute_deprecated ImgReSampleContext *img_resample_init(int output_width, int output_height,
2483
                                      int input_width, int input_height);
2484

    
2485
/**
2486
 * @deprecated Use the software scaler (swscale) instead.
2487
 */
2488
attribute_deprecated ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2489
                                      int iwidth, int iheight,
2490
                                      int topBand, int bottomBand,
2491
                                      int leftBand, int rightBand,
2492
                                      int padtop, int padbottom,
2493
                                      int padleft, int padright);
2494

    
2495
/**
2496
 * @deprecated Use the software scaler (swscale) instead.
2497
 */
2498
attribute_deprecated void img_resample(ImgReSampleContext *s,
2499
                  AVPicture *output, const AVPicture *input);
2500

    
2501
/**
2502
 * @deprecated Use the software scaler (swscale) instead.
2503
 */
2504
attribute_deprecated void img_resample_close(ImgReSampleContext *s);
2505

    
2506
#endif
2507

    
2508
/**
2509
 * Allocate memory for a picture.  Call avpicture_free to free it.
2510
 *
2511
 * @param picture the picture to be filled in
2512
 * @param pix_fmt the format of the picture
2513
 * @param width the width of the picture
2514
 * @param height the height of the picture
2515
 * @return zero if successful, a negative value if not
2516
 */
2517
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2518

    
2519
/**
2520
 * Free a picture previously allocated by avpicture_alloc().
2521
 *
2522
 * @param picture the AVPicture to be freed
2523
 */
2524
void avpicture_free(AVPicture *picture);
2525

    
2526
/**
2527
 * Fill in the AVPicture fields.
2528
 * The fields of the given AVPicture are filled in by using the 'ptr' address
2529
 * which points to the image data buffer. Depending on the specified picture
2530
 * format, one or multiple image data pointers and line sizes will be set.
2531
 * If a planar format is specified, several pointers will be set pointing to
2532
 * the different picture planes and the line sizes of the different planes
2533
 * will be stored in the lines_sizes array.
2534
 *
2535
 * @param picture AVPicture whose fields are to be filled in
2536
 * @param ptr Buffer which will contain or contains the actual image data
2537
 * @param pix_fmt The format in which the picture data is stored.
2538
 * @param width the width of the image in pixels
2539
 * @param height the height of the image in pixels
2540
 * @return size of the image data in bytes
2541
 */
2542
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2543
                   int pix_fmt, int width, int height);
2544
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2545
                     unsigned char *dest, int dest_size);
2546

    
2547
/**
2548
 * Calculate the size in bytes that a picture of the given width and height
2549
 * would occupy if stored in the given picture format.
2550
 *
2551
 * @param pix_fmt the given picture format
2552
 * @param width the width of the image
2553
 * @param height the height of the image
2554
 * @return Image data size in bytes
2555
 */
2556
int avpicture_get_size(int pix_fmt, int width, int height);
2557
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2558
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2559
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2560
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2561
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2562

    
2563
#define FF_LOSS_RESOLUTION  0x0001 /**< loss due to resolution change */
2564
#define FF_LOSS_DEPTH       0x0002 /**< loss due to color depth change */
2565
#define FF_LOSS_COLORSPACE  0x0004 /**< loss due to color space conversion */
2566
#define FF_LOSS_ALPHA       0x0008 /**< loss of alpha bits */
2567
#define FF_LOSS_COLORQUANT  0x0010 /**< loss due to color quantization */
2568
#define FF_LOSS_CHROMA      0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */
2569

    
2570
/**
2571
 * Computes what kind of losses will occur when converting from one specific
2572
 * pixel format to another.
2573
 * When converting from one pixel format to another, information loss may occur.
2574
 * For example, when converting from RGB24 to GRAY, the color information will
2575
 * be lost. Similarly, other losses occur when converting from some formats to
2576
 * other formats. These losses can involve loss of chroma, but also loss of
2577
 * resolution, loss of color depth, loss due to the color space conversion, loss
2578
 * of the alpha bits or loss due to color quantization.
2579
 * avcodec_get_fix_fmt_loss() informs you about the various types of losses
2580
 * which will occur when converting from one pixel format to another.
2581
 *
2582
 * @param[in] dst_pix_fmt destination pixel format
2583
 * @param[in] src_pix_fmt source pixel format
2584
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
2585
 * @return Combination of flags informing you what kind of losses will occur.
2586
 */
2587
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2588
                             int has_alpha);
2589

    
2590
/**
2591
 * Finds the best pixel format to convert to given a certain source pixel
2592
 * format.  When converting from one pixel format to another, information loss
2593
 * may occur.  For example, when converting from RGB24 to GRAY, the color
2594
 * information will be lost. Similarly, other losses occur when converting from
2595
 * some formats to other formats. avcodec_find_best_pix_fmt() searches which of
2596
 * the given pixel formats should be used to suffer the least amount of loss.
2597
 * The pixel formats from which it chooses one, are determined by the
2598
 * \p pix_fmt_mask parameter.
2599
 *
2600
 * @code
2601
 * src_pix_fmt = PIX_FMT_YUV420P;
2602
 * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24);
2603
 * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss);
2604
 * @endcode
2605
 *
2606
 * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from
2607
 * @param[in] src_pix_fmt source pixel format
2608
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
2609
 * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
2610
 * @return The best pixel format to convert to or -1 if none was found.
2611
 */
2612
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2613
                              int has_alpha, int *loss_ptr);
2614

    
2615
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2616
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2617

    
2618
/**
2619
 * Tell if an image really has transparent alpha values.
2620
 * @return ored mask of FF_ALPHA_xxx constants
2621
 */
2622
int img_get_alpha_info(const AVPicture *src,
2623
                       int pix_fmt, int width, int height);
2624

    
2625
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
2626
/**
2627
 * convert among pixel formats
2628
 * @deprecated Use the software scaler (swscale) instead.
2629
 */
2630
attribute_deprecated int img_convert(AVPicture *dst, int dst_pix_fmt,
2631
                const AVPicture *src, int pix_fmt,
2632
                int width, int height);
2633
#endif
2634

    
2635
/* deinterlace a picture */
2636
/* deinterlace - if not supported return -1 */
2637
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2638
                          int pix_fmt, int width, int height);
2639

    
2640
/* external high level API */
2641

    
2642
extern AVCodec *first_avcodec;
2643

    
2644
/* returns LIBAVCODEC_VERSION_INT constant */
2645
unsigned avcodec_version(void);
2646
/* returns LIBAVCODEC_BUILD constant */
2647
unsigned avcodec_build(void);
2648

    
2649
/**
2650
 * Initializes libavcodec.
2651
 *
2652
 * @warning This function \e must be called before any other libavcodec
2653
 * function.
2654
 */
2655
void avcodec_init(void);
2656

    
2657
void register_avcodec(AVCodec *format);
2658

    
2659
/**
2660
 * Finds an encoder with a matching codec ID.
2661
 *
2662
 * @param id CodecID of the requested encoder
2663
 * @return An encoder if one was found, NULL otherwise.
2664
 */
2665
AVCodec *avcodec_find_encoder(enum CodecID id);
2666

    
2667
/**
2668
 * Finds an encoder with the specified name.
2669
 *
2670
 * @param name name of the requested encoder
2671
 * @return An encoder if one was found, NULL otherwise.
2672
 */
2673
AVCodec *avcodec_find_encoder_by_name(const char *name);
2674

    
2675
/**
2676
 * Finds a decoder with a matching codec ID.
2677
 *
2678
 * @param id CodecID of the requested decoder
2679
 * @return A decoder if one was found, NULL otherwise.
2680
 */
2681
AVCodec *avcodec_find_decoder(enum CodecID id);
2682

    
2683
/**
2684
 * Finds an decoder with the specified name.
2685
 *
2686
 * @param name name of the requested decoder
2687
 * @return A decoder if one was found, NULL otherwise.
2688
 */
2689
AVCodec *avcodec_find_decoder_by_name(const char *name);
2690
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2691

    
2692
/**
2693
 * Sets the fields of the given AVCodecContext to default values.
2694
 *
2695
 * @param s The AVCodecContext of which the fields should be set to default values.
2696
 */
2697
void avcodec_get_context_defaults(AVCodecContext *s);
2698

    
2699
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
2700
 *  we WILL change its arguments and name a few times! */
2701
void avcodec_get_context_defaults2(AVCodecContext *s, enum CodecType);
2702

    
2703
/**
2704
 * Allocates an AVCodecContext and sets its fields to default values.  The
2705
 * resulting struct can be deallocated by simply calling av_free().
2706
 *
2707
 * @return An AVCodecContext filled with default values or NULL on failure.
2708
 * @see avcodec_get_context_defaults
2709
 */
2710
AVCodecContext *avcodec_alloc_context(void);
2711

    
2712
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
2713
 *  we WILL change its arguments and name a few times! */
2714
AVCodecContext *avcodec_alloc_context2(enum CodecType);
2715

    
2716
/**
2717
 * Sets the fields of the given AVFrame to default values.
2718
 *
2719
 * @param pic The AVFrame of which the fields should be set to default values.
2720
 */
2721
void avcodec_get_frame_defaults(AVFrame *pic);
2722

    
2723
/**
2724
 * Allocates an AVFrame and sets its fields to default values.  The resulting
2725
 * struct can be deallocated by simply calling av_free().
2726
 *
2727
 * @return An AVFrame filled with default values or NULL on failure.
2728
 * @see avcodec_get_frame_defaults
2729
 */
2730
AVFrame *avcodec_alloc_frame(void);
2731

    
2732
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2733
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2734
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2735
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2736

    
2737
/**
2738
 * Checks if the given dimension of a picture is valid, meaning that all
2739
 * bytes of the picture can be addressed with a signed int.
2740
 *
2741
 * @param[in] w Width of the picture.
2742
 * @param[in] h Height of the picture.
2743
 * @return Zero if valid, a negative value if invalid.
2744
 */
2745
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2746
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2747

    
2748
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2749
void avcodec_thread_free(AVCodecContext *s);
2750
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2751
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2752
//FIXME func typedef
2753

    
2754
/**
2755
 * Initializes the AVCodecContext to use the given AVCodec. Prior to using this
2756
 * function the context has to be allocated.
2757
 *
2758
 * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
2759
 * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
2760
 * retrieving a codec.
2761
 *
2762
 * @warning This function is not thread safe!
2763
 *
2764
 * @code
2765
 * codec = avcodec_find_decoder(CODEC_ID_H264);
2766
 * if (!codec)
2767
 *     exit(1);
2768
 *
2769
 * context = avcodec_alloc_context();
2770
 *
2771
 * if (avcodec_open(context, codec) < 0)
2772
 *     exit(1);
2773
 * @endcode
2774
 *
2775
 * @param avctx The context which will be set up to use the given codec.
2776
 * @param codec The codec to use within the context.
2777
 * @return zero on success, a negative value on error
2778
 * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder
2779
 */
2780
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2781

    
2782
/**
2783
 * @deprecated Use avcodec_decode_audio2() instead.
2784
 */
2785
attribute_deprecated int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2786
                         int *frame_size_ptr,
2787
                         uint8_t *buf, int buf_size);
2788

    
2789
/**
2790
 * Decodes an audio frame from \p buf into \p samples.
2791
 * The avcodec_decode_audio2() function decodes an audio frame from the input
2792
 * buffer \p buf of size \p buf_size. To decode it, it makes use of the
2793
 * audio codec which was coupled with \p avctx using avcodec_open(). The
2794
 * resulting decoded frame is stored in output buffer \p samples.  If no frame
2795
 * could be decompressed, \p frame_size_ptr is zero. Otherwise, it is the
2796
 * decompressed frame size in \e bytes.
2797
 *
2798
 * @warning You \e must set \p frame_size_ptr to the allocated size of the
2799
 * output buffer before calling avcodec_decode_audio2().
2800
 *
2801
 * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
2802
 * the actual read bytes because some optimized bitstream readers read 32 or 64
2803
 * bits at once and could read over the end.
2804
 *
2805
 * @warning The end of the input buffer \p buf should be set to 0 to ensure that
2806
 * no overreading happens for damaged MPEG streams.
2807
 *
2808
 * @note You might have to align the input buffer \p buf and output buffer \p
2809
 * samples. The alignment requirements depend on the CPU: On some CPUs it isn't
2810
 * necessary at all, on others it won't work at all if not aligned and on others
2811
 * it will work but it will have an impact on performance. In practice, the
2812
 * bitstream should have 4 byte alignment at minimum and all sample data should
2813
 * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
2814
 * the linesize is not a multiple of 16 then there's no sense in aligning the
2815
 * start of the buffer to 16.
2816
 *
2817
 * @param avctx the codec context
2818
 * @param[out] samples the output buffer
2819
 * @param[in,out] frame_size_ptr the output buffer size in bytes
2820
 * @param[in] buf the input buffer
2821
 * @param[in] buf_size the input buffer size in bytes
2822
 * @return On error a negative value is returned, otherwise the number of bytes
2823
 * used or zero if no frame could be decompressed.
2824
 */
2825
int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
2826
                         int *frame_size_ptr,
2827
                         uint8_t *buf, int buf_size);
2828

    
2829
/**
2830
 * Decodes a video frame from \p buf into \p picture.
2831
 * The avcodec_decode_video() function decodes a video frame from the input
2832
 * buffer \p buf of size \p buf_size. To decode it, it makes use of the
2833
 * video codec which was coupled with \p avctx using avcodec_open(). The
2834
 * resulting decoded frame is stored in \p picture.
2835
 *
2836
 * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
2837
 * the actual read bytes because some optimized bitstream readers read 32 or 64
2838
 * bits at once and could read over the end.
2839
 *
2840
 * @warning The end of the input buffer \p buf should be set to 0 to ensure that
2841
 * no overreading happens for damaged MPEG streams.
2842
 *
2843
 * @note You might have to align the input buffer \p buf and output buffer \p
2844
 * samples. The alignment requirements depend on the CPU: on some CPUs it isn't
2845
 * necessary at all, on others it won't work at all if not aligned and on others
2846
 * it will work but it will have an impact on performance. In practice, the
2847
 * bitstream should have 4 byte alignment at minimum and all sample data should
2848
 * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
2849
 * the linesize is not a multiple of 16 then there's no sense in aligning the
2850
 * start of the buffer to 16.
2851
 *
2852
 * @param avctx the codec context
2853
 * @param[out] picture The AVFrame in which the decoded video frame will be stored.
2854
 * @param[in] buf the input buffer
2855
 * @param[in] buf_size the size of the input buffer in bytes
2856
 * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
2857
 * @return On error a negative value is returned, otherwise the number of bytes
2858
 * used or zero if no frame could be decompressed.
2859
 */
2860
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2861
                         int *got_picture_ptr,
2862
                         uint8_t *buf, int buf_size);
2863

    
2864
/* Decode a subtitle message. Return -1 if error, otherwise return the
2865
 * number of bytes used. If no subtitle could be decompressed,
2866
 * got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
2867
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2868
                            int *got_sub_ptr,
2869
                            const uint8_t *buf, int buf_size);
2870
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2871
                        int *data_size_ptr,
2872
                        uint8_t *buf, int buf_size);
2873

    
2874
/**
2875
 * Encodes an audio frame from \p samples into \p buf.
2876
 * The avcodec_encode_audio() function encodes an audio frame from the input
2877
 * buffer \p samples. To encode it, it makes use of the audio codec which was
2878
 * coupled with \p avctx using avcodec_open(). The resulting encoded frame is
2879
 * stored in output buffer \p buf.
2880
 *
2881
 * @note The output buffer should be at least \c FF_MIN_BUFFER_SIZE bytes large.
2882
 *
2883
 * @param avctx the codec context
2884
 * @param[out] buf the output buffer
2885
 * @param[in] buf_size the output buffer size
2886
 * @param[in] samples the input buffer containing the samples
2887
 * @return On error a negative value is returned, on succes zero or the number
2888
 * of bytes used from the input buffer.
2889
 */
2890
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2891
                         const short *samples);
2892

    
2893
/**
2894
 * Encodes a video frame from \p pict into \p buf.
2895
 * The avcodec_encode_video() function encodes a video frame from the input
2896
 * \p pict. To encode it, it makes use of the video codec which was coupled with
2897
 * \p avctx using avcodec_open(). The resulting encoded bytes representing the
2898
 * frame are stored in the output buffer \p buf. The input picture should be
2899
 * stored using a specific format, namely \c avctx.pix_fmt.
2900
 *
2901
 * @param avctx the codec context
2902
 * @param[out] buf the output buffer for the bitstream of encoded frame
2903
 * @param[in] buf_size the size of the output buffer in bytes
2904
 * @param[in] pict the input picture to encode
2905
 * @return On error a negative value is returned, on success zero or the number
2906
 * of bytes used from the input buffer.
2907
 */
2908
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2909
                         const AVFrame *pict);
2910
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2911
                            const AVSubtitle *sub);
2912

    
2913
int avcodec_close(AVCodecContext *avctx);
2914

    
2915
void avcodec_register_all(void);
2916

    
2917
/**
2918
 * Flush buffers, should be called when seeking or when switching to a different stream.
2919
 */
2920
void avcodec_flush_buffers(AVCodecContext *avctx);
2921

    
2922
void avcodec_default_free_buffers(AVCodecContext *s);
2923

    
2924
/* misc useful functions */
2925

    
2926
/**
2927
 * Returns a single letter to describe the given picture type \p pict_type.
2928
 *
2929
 * @param[in] pict_type the picture type
2930
 * @return A single character representing the picture type.
2931
 */
2932
char av_get_pict_type_char(int pict_type);
2933

    
2934
/**
2935
 * Returns codec bits per sample.
2936
 *
2937
 * @param[in] codec_id the codec
2938
 * @return Number of bits per sample or zero if unknown for the given codec.
2939
 */
2940
int av_get_bits_per_sample(enum CodecID codec_id);
2941

    
2942
/* frame parsing */
2943
typedef struct AVCodecParserContext {
2944
    void *priv_data;
2945
    struct AVCodecParser *parser;
2946
    int64_t frame_offset; /* offset of the current frame */
2947
    int64_t cur_offset; /* current offset
2948
                           (incremented by each av_parser_parse()) */
2949
    int64_t last_frame_offset; /* offset of the last frame */
2950
    /* video info */
2951
    int pict_type; /* XXX: Put it back in AVCodecContext. */
2952
    int repeat_pict; /* XXX: Put it back in AVCodecContext. */
2953
    int64_t pts;     /* pts of the current frame */
2954
    int64_t dts;     /* dts of the current frame */
2955

    
2956
    /* private data */
2957
    int64_t last_pts;
2958
    int64_t last_dts;
2959
    int fetch_timestamp;
2960

    
2961
#define AV_PARSER_PTS_NB 4
2962
    int cur_frame_start_index;
2963
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2964
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2965
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2966

    
2967
    int flags;
2968
#define PARSER_FLAG_COMPLETE_FRAMES           0x0001
2969

    
2970
    int64_t offset;      ///< byte offset from starting packet start
2971
    int64_t last_offset;
2972
} AVCodecParserContext;
2973

    
2974
typedef struct AVCodecParser {
2975
    int codec_ids[5]; /* several codec IDs are permitted */
2976
    int priv_data_size;
2977
    int (*parser_init)(AVCodecParserContext *s);
2978
    int (*parser_parse)(AVCodecParserContext *s,
2979
                        AVCodecContext *avctx,
2980
                        uint8_t **poutbuf, int *poutbuf_size,
2981
                        const uint8_t *buf, int buf_size);
2982
    void (*parser_close)(AVCodecParserContext *s);
2983
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2984
    struct AVCodecParser *next;
2985
} AVCodecParser;
2986

    
2987
extern AVCodecParser *av_first_parser;
2988

    
2989
void av_register_codec_parser(AVCodecParser *parser);
2990
AVCodecParserContext *av_parser_init(int codec_id);
2991
int av_parser_parse(AVCodecParserContext *s,
2992
                    AVCodecContext *avctx,
2993
                    uint8_t **poutbuf, int *poutbuf_size,
2994
                    const uint8_t *buf, int buf_size,
2995
                    int64_t pts, int64_t dts);
2996
int av_parser_change(AVCodecParserContext *s,
2997
                     AVCodecContext *avctx,
2998
                     uint8_t **poutbuf, int *poutbuf_size,
2999
                     const uint8_t *buf, int buf_size, int keyframe);
3000
void av_parser_close(AVCodecParserContext *s);
3001

    
3002
extern AVCodecParser aac_parser;
3003
extern AVCodecParser ac3_parser;
3004
extern AVCodecParser cavsvideo_parser;
3005
extern AVCodecParser dca_parser;
3006
extern AVCodecParser dvbsub_parser;
3007
extern AVCodecParser dvdsub_parser;
3008
extern AVCodecParser h261_parser;
3009
extern AVCodecParser h263_parser;
3010
extern AVCodecParser h264_parser;
3011
extern AVCodecParser mjpeg_parser;
3012
extern AVCodecParser mpeg4video_parser;
3013
extern AVCodecParser mpegaudio_parser;
3014
extern AVCodecParser mpegvideo_parser;
3015
extern AVCodecParser pnm_parser;
3016
extern AVCodecParser vc1_parser;
3017

    
3018

    
3019
typedef struct AVBitStreamFilterContext {
3020
    void *priv_data;
3021
    struct AVBitStreamFilter *filter;
3022
    AVCodecParserContext *parser;
3023
    struct AVBitStreamFilterContext *next;
3024
} AVBitStreamFilterContext;
3025

    
3026

    
3027
typedef struct AVBitStreamFilter {
3028
    const char *name;
3029
    int priv_data_size;
3030
    int (*filter)(AVBitStreamFilterContext *bsfc,
3031
                  AVCodecContext *avctx, const char *args,
3032
                  uint8_t **poutbuf, int *poutbuf_size,
3033
                  const uint8_t *buf, int buf_size, int keyframe);
3034
    struct AVBitStreamFilter *next;
3035
} AVBitStreamFilter;
3036

    
3037
extern AVBitStreamFilter *av_first_bitstream_filter;
3038

    
3039
void av_register_bitstream_filter(AVBitStreamFilter *bsf);
3040
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
3041
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
3042
                               AVCodecContext *avctx, const char *args,
3043
                               uint8_t **poutbuf, int *poutbuf_size,
3044
                               const uint8_t *buf, int buf_size, int keyframe);
3045
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
3046

    
3047
extern AVBitStreamFilter dump_extradata_bsf;
3048
extern AVBitStreamFilter remove_extradata_bsf;
3049
extern AVBitStreamFilter noise_bsf;
3050
extern AVBitStreamFilter mp3_header_compress_bsf;
3051
extern AVBitStreamFilter mp3_header_decompress_bsf;
3052
extern AVBitStreamFilter mjpega_dump_header_bsf;
3053
extern AVBitStreamFilter imx_dump_header_bsf;
3054

    
3055

    
3056
/* memory */
3057

    
3058
/**
3059
 * Reallocates the given block if it is not large enough, otherwise it
3060
 * does nothing.
3061
 *
3062
 * @see av_realloc
3063
 */
3064
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
3065

    
3066
/* for static data only */
3067

    
3068
/**
3069
 * Frees all static arrays and resets their pointers to 0.
3070
 * Call this function to release all statically allocated tables.
3071
 *
3072
 * @deprecated. Code which uses av_free_static is broken/missdesigned
3073
 * and should correctly use static arrays
3074
 *
3075
 */
3076
attribute_deprecated void av_free_static(void);
3077

    
3078
/**
3079
 * Allocation of static arrays.
3080
 *
3081
 * @warning Do not use for normal allocation.
3082
 *
3083
 * @param[in] size The amount of memory you need in bytes.
3084
 * @return block of memory of the requested size
3085
 * @deprecated. Code which uses av_mallocz_static is broken/missdesigned
3086
 * and should correctly use static arrays
3087
 */
3088
attribute_deprecated void *av_mallocz_static(unsigned int size);
3089

    
3090
/**
3091
 * Copy image 'src' to 'dst'.
3092
 */
3093
void av_picture_copy(AVPicture *dst, const AVPicture *src,
3094
              int pix_fmt, int width, int height);
3095

    
3096
/**
3097
 * Crop image top and left side.
3098
 */
3099
int av_picture_crop(AVPicture *dst, const AVPicture *src,
3100
             int pix_fmt, int top_band, int left_band);
3101

    
3102
/**
3103
 * Pad image.
3104
 */
3105
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
3106
            int padtop, int padbottom, int padleft, int padright, int *color);
3107

    
3108
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
3109
/**
3110
 * @deprecated Use the software scaler (swscale) instead.
3111
 */
3112
attribute_deprecated void img_copy(AVPicture *dst, const AVPicture *src,
3113
              int pix_fmt, int width, int height);
3114

    
3115
/**
3116
 * @deprecated Use the software scaler (swscale) instead.
3117
 */
3118
attribute_deprecated int img_crop(AVPicture *dst, const AVPicture *src,
3119
             int pix_fmt, int top_band, int left_band);
3120

    
3121
/**
3122
 * @deprecated Use the software scaler (swscale) instead.
3123
 */
3124
attribute_deprecated int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
3125
            int padtop, int padbottom, int padleft, int padright, int *color);
3126
#endif
3127

    
3128
extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
3129

    
3130
/* error handling */
3131
#if EINVAL > 0
3132
#define AVERROR(e) (-(e)) /**< Returns a negative error code from a POSIX error code, to return from library functions. */
3133
#define AVUNERROR(e) (-(e)) /**< Returns a POSIX error code from a library function error return value. */
3134
#else
3135
/* Some platforms have E* and errno already negated. */
3136
#define AVERROR(e) (e)
3137
#define AVUNERROR(e) (e)
3138
#endif
3139
#define AVERROR_UNKNOWN     AVERROR(EINVAL)  /**< unknown error */
3140
#define AVERROR_IO          AVERROR(EIO)     /**< I/O error */
3141
#define AVERROR_NUMEXPECTED AVERROR(EDOM)    /**< Number syntax expected in filename. */
3142
#define AVERROR_INVALIDDATA AVERROR(EINVAL)  /**< invalid data found */
3143
#define AVERROR_NOMEM       AVERROR(ENOMEM)  /**< not enough memory */
3144
#define AVERROR_NOFMT       AVERROR(EILSEQ)  /**< unknown format */
3145
#define AVERROR_NOTSUPP     AVERROR(ENOSYS)  /**< Operation not supported. */
3146

    
3147
#ifdef __cplusplus
3148
}
3149
#endif
3150

    
3151
#endif /* AVCODEC_H */