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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)+3)
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#define LIBAVCODEC_VERSION      51.40.3
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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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    /* 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 */
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/* codec capabilities */
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#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< Decoder can use draw_horiz_band callback.
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/**
415
 * Codec uses get_buffer() for allocating buffers.
416
 * direct rendering method 1
417
 */
418
#define CODEC_CAP_DR1             0x0002
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/* If 'parse_only' field is true, then avcodec_parse_frame() can be used. */
420
#define CODEC_CAP_PARSE_ONLY      0x0004
421
#define CODEC_CAP_TRUNCATED       0x0008
422
/* Codec can export data for HW decoding (XvMC). */
423
#define CODEC_CAP_HWACCEL         0x0010
424
/**
425
 * Codec has a nonzero delay and needs to be fed with NULL at the end to get the delayed data.
426
 * If this is not set, the codec is guaranteed to never be fed with NULL data.
427
 */
428
#define CODEC_CAP_DELAY           0x0020
429
/**
430
 * Codec can be fed a final frame with a smaller size.
431
 * This can be used to prevent truncation of the last audio samples.
432
 */
433
#define CODEC_CAP_SMALL_LAST_FRAME 0x0040
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435
//The following defines may change, don't expect compatibility if you use them.
436
#define MB_TYPE_INTRA4x4   0x0001
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#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific
438
#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
452
#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
453
#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
454
#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
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#define MB_TYPE_QUANT      0x00010000
456
#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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459
/**
460
 * Pan Scan area.
461
 * This specifies the area which should be displayed.
462
 * Note there may be multiple such areas for one frame.
463
 */
464
typedef struct AVPanScan{
465
    /**
466
     * id
467
     * - encoding: Set by user.
468
     * - decoding: Set by libavcodec.
469
     */
470
    int id;
471

    
472
    /**
473
     * width and height in 1/16 pel
474
     * - encoding: Set by user.
475
     * - decoding: Set by libavcodec.
476
     */
477
    int width;
478
    int height;
479

    
480
    /**
481
     * position of the top left corner in 1/16 pel for up to 3 fields/frames
482
     * - encoding: Set by user.
483
     * - decoding: Set by libavcodec.
484
     */
485
    int16_t position[3][2];
486
}AVPanScan;
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488
#define FF_COMMON_FRAME \
489
    /**\
490
     * pointer to the picture planes.\
491
     * This might be different from the first allocated byte\
492
     * - encoding: \
493
     * - decoding: \
494
     */\
495
    uint8_t *data[4];\
496
    int linesize[4];\
497
    /**\
498
     * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.\
499
     * This isn't used by libavcodec unless the default get/release_buffer() is used.\
500
     * - encoding: \
501
     * - decoding: \
502
     */\
503
    uint8_t *base[4];\
504
    /**\
505
     * 1 -> keyframe, 0-> not\
506
     * - encoding: Set by libavcodec.\
507
     * - decoding: Set by libavcodec.\
508
     */\
509
    int key_frame;\
510
\
511
    /**\
512
     * Picture type of the frame, see ?_TYPE below.\
513
     * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
514
     * - decoding: Set by libavcodec.\
515
     */\
516
    int pict_type;\
517
\
518
    /**\
519
     * presentation timestamp in time_base units (time when frame should be shown to user)\
520
     * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.\
521
     * - encoding: MUST be set by user.\
522
     * - decoding: Set by libavcodec.\
523
     */\
524
    int64_t pts;\
525
\
526
    /**\
527
     * picture number in bitstream order\
528
     * - encoding: set by\
529
     * - decoding: Set by libavcodec.\
530
     */\
531
    int coded_picture_number;\
532
    /**\
533
     * picture number in display order\
534
     * - encoding: set by\
535
     * - decoding: Set by libavcodec.\
536
     */\
537
    int display_picture_number;\
538
\
539
    /**\
540
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
541
     * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
542
     * - decoding: Set by libavcodec.\
543
     */\
544
    int quality; \
545
\
546
    /**\
547
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
548
     * Set to INT_MAX if the buffer has not been used yet.\
549
     * - encoding: unused\
550
     * - decoding: MUST be set by get_buffer().\
551
     */\
552
    int age;\
553
\
554
    /**\
555
     * is this picture used as reference\
556
     * - encoding: unused\
557
     * - decoding: Set by libavcodec. (before get_buffer() call)).\
558
     */\
559
    int reference;\
560
\
561
    /**\
562
     * QP table\
563
     * - encoding: unused\
564
     * - decoding: Set by libavcodec.\
565
     */\
566
    int8_t *qscale_table;\
567
    /**\
568
     * QP store stride\
569
     * - encoding: unused\
570
     * - decoding: Set by libavcodec.\
571
     */\
572
    int qstride;\
573
\
574
    /**\
575
     * mbskip_table[mb]>=1 if MB didn't change\
576
     * stride= mb_width = (width+15)>>4\
577
     * - encoding: unused\
578
     * - decoding: Set by libavcodec.\
579
     */\
580
    uint8_t *mbskip_table;\
581
\
582
    /**\
583
     * motion vector table\
584
     * @code\
585
     * example:\
586
     * int mv_sample_log2= 4 - motion_subsample_log2;\
587
     * int mb_width= (width+15)>>4;\
588
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
589
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
590
     * @endcode\
591
     * - encoding: Set by user.\
592
     * - decoding: Set by libavcodec.\
593
     */\
594
    int16_t (*motion_val[2])[2];\
595
\
596
    /**\
597
     * macroblock type table\
598
     * mb_type_base + mb_width + 2\
599
     * - encoding: Set by user.\
600
     * - decoding: Set by libavcodec.\
601
     */\
602
    uint32_t *mb_type;\
603
\
604
    /**\
605
     * log2 of the size of the block which a single vector in motion_val represents: \
606
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
607
     * - encoding: unused\
608
     * - decoding: Set by libavcodec.\
609
     */\
610
    uint8_t motion_subsample_log2;\
611
\
612
    /**\
613
     * for some private data of the user\
614
     * - encoding: unused\
615
     * - decoding: Set by user.\
616
     */\
617
    void *opaque;\
618
\
619
    /**\
620
     * error\
621
     * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.\
622
     * - decoding: unused\
623
     */\
624
    uint64_t error[4];\
625
\
626
    /**\
627
     * type of the buffer (to keep track of who has to deallocate data[*])\
628
     * - encoding: Set by the one who allocates it.\
629
     * - decoding: Set by the one who allocates it.\
630
     * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.\
631
     */\
632
    int type;\
633
    \
634
    /**\
635
     * When decoding, this signals how much the picture must be delayed.\
636
     * extra_delay = repeat_pict / (2*fps)\
637
     * - encoding: unused\
638
     * - decoding: Set by libavcodec.\
639
     */\
640
    int repeat_pict;\
641
    \
642
    /**\
643
     * \
644
     */\
645
    int qscale_type;\
646
    \
647
    /**\
648
     * The content of the picture is interlaced.\
649
     * - encoding: Set by user.\
650
     * - decoding: Set by libavcodec. (default 0)\
651
     */\
652
    int interlaced_frame;\
653
    \
654
    /**\
655
     * If the content is interlaced, is top field displayed first.\
656
     * - encoding: Set by user.\
657
     * - decoding: Set by libavcodec.\
658
     */\
659
    int top_field_first;\
660
    \
661
    /**\
662
     * Pan scan.\
663
     * - encoding: Set by user.\
664
     * - decoding: Set by libavcodec.\
665
     */\
666
    AVPanScan *pan_scan;\
667
    \
668
    /**\
669
     * Tell user application that palette has changed from previous frame.\
670
     * - encoding: ??? (no palette-enabled encoder yet)\
671
     * - decoding: Set by libavcodec. (default 0).\
672
     */\
673
    int palette_has_changed;\
674
    \
675
    /**\
676
     * codec suggestion on buffer type if != 0\
677
     * - encoding: unused\
678
     * - decoding: Set by libavcodec. (before get_buffer() call)).\
679
     */\
680
    int buffer_hints;\
681
\
682
    /**\
683
     * DCT coefficients\
684
     * - encoding: unused\
685
     * - decoding: Set by libavcodec.\
686
     */\
687
    short *dct_coeff;\
688
\
689
    /**\
690
     * motion referece frame index\
691
     * - encoding: Set by user.\
692
     * - decoding: Set by libavcodec.\
693
     */\
694
    int8_t *ref_index[2];
695

    
696
#define FF_QSCALE_TYPE_MPEG1 0
697
#define FF_QSCALE_TYPE_MPEG2 1
698
#define FF_QSCALE_TYPE_H264  2
699

    
700
#define FF_BUFFER_TYPE_INTERNAL 1
701
#define FF_BUFFER_TYPE_USER     2 ///< direct rendering buffers (image is (de)allocated by user)
702
#define FF_BUFFER_TYPE_SHARED   4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared.
703
#define FF_BUFFER_TYPE_COPY     8 ///< Just a (modified) copy of some other buffer, don't deallocate anything.
704

    
705

    
706
#define FF_I_TYPE 1 // Intra
707
#define FF_P_TYPE 2 // Predicted
708
#define FF_B_TYPE 3 // Bi-dir predicted
709
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
710
#define FF_SI_TYPE 5
711
#define FF_SP_TYPE 6
712

    
713
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore).
714
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer.
715
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content.
716
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update).
717

    
718
/**
719
 * Audio Video Frame.
720
 */
721
typedef struct AVFrame {
722
    FF_COMMON_FRAME
723
} AVFrame;
724

    
725
#define DEFAULT_FRAME_RATE_BASE 1001000
726

    
727
/**
728
 * main external API structure
729
 */
730
typedef struct AVCodecContext {
731
    /**
732
     * information on struct for av_log
733
     * - set by avcodec_alloc_context
734
     */
735
    AVClass *av_class;
736
    /**
737
     * the average bitrate
738
     * - encoding: Set by user; unused for constant quantizer encoding.
739
     * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
740
     */
741
    int bit_rate;
742

    
743
    /**
744
     * number of bits the bitstream is allowed to diverge from the reference.
745
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
746
     * - encoding: Set by user; unused for constant quantizer encoding.
747
     * - decoding: unused
748
     */
749
    int bit_rate_tolerance;
750

    
751
    /**
752
     * CODEC_FLAG_*.
753
     * - encoding: Set by user.
754
     * - decoding: Set by user.
755
     */
756
    int flags;
757

    
758
    /**
759
     * Some codecs need additional format info. It is stored here.
760
     * If any muxer uses this then ALL demuxers/parsers AND encoders for the
761
     * specific codec MUST set it correctly otherwise stream copy breaks.
762
     * In general use of this field by muxers is not recommanded.
763
     * - encoding: Set by libavcodec.
764
     * - decoding: Set by libavcodec. (FIXME: Is this OK?)
765
     */
766
    int sub_id;
767

    
768
    /**
769
     * Motion estimation algorithm used for video coding.
770
     * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
771
     * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
772
     * - encoding: MUST be set by user.
773
     * - decoding: unused
774
     */
775
    int me_method;
776

    
777
    /**
778
     * some codecs need / can use extradata like Huffman tables.
779
     * mjpeg: Huffman tables
780
     * rv10: additional flags
781
     * mpeg4: global headers (they can be in the bitstream or here)
782
     * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
783
     * than extradata_size to avoid prolems if it is read with the bitstream reader.
784
     * The bytewise contents of extradata must not depend on the architecture or CPU endianness.
785
     * - encoding: Set/allocated/freed by libavcodec.
786
     * - decoding: Set/allocated/freed by user.
787
     */
788
    uint8_t *extradata;
789
    int extradata_size;
790

    
791
    /**
792
     * This is the fundamental unit of time (in seconds) in terms
793
     * of which frame timestamps are represented. For fixed-fps content,
794
     * timebase should be 1/framerate and timestamp increments should be
795
     * identically 1.
796
     * - encoding: MUST be set by user.
797
     * - decoding: Set by libavcodec.
798
     */
799
    AVRational time_base;
800

    
801
    /* video only */
802
    /**
803
     * picture width / height.
804
     * - encoding: MUST be set by user.
805
     * - decoding: Set by libavcodec.
806
     * Note: For compatibility it is possible to set this instead of
807
     * coded_width/height before decoding.
808
     */
809
    int width, height;
810

    
811
#define FF_ASPECT_EXTENDED 15
812

    
813
    /**
814
     * the number of pictures in a group of pictures, or 0 for intra_only
815
     * - encoding: Set by user.
816
     * - decoding: unused
817
     */
818
    int gop_size;
819

    
820
    /**
821
     * Pixel format, see PIX_FMT_xxx.
822
     * - encoding: Set by user.
823
     * - decoding: Set by libavcodec.
824
     */
825
    enum PixelFormat pix_fmt;
826

    
827
    /**
828
     * Frame rate emulation. If not zero, the lower layer (i.e. format handler)
829
     * has to read frames at native frame rate.
830
     * - encoding: Set by user.
831
     * - decoding: unused
832
     */
833
    int rate_emu;
834

    
835
    /**
836
     * If non NULL, 'draw_horiz_band' is called by the libavcodec
837
     * decoder to draw a horizontal band. It improves cache usage. Not
838
     * all codecs can do that. You must check the codec capabilities
839
     * beforehand.
840
     * - encoding: unused
841
     * - decoding: Set by user.
842
     * @param height the height of the slice
843
     * @param y the y position of the slice
844
     * @param type 1->top field, 2->bottom field, 3->frame
845
     * @param offset offset into the AVFrame.data from which the slice should be read
846
     */
847
    void (*draw_horiz_band)(struct AVCodecContext *s,
848
                            const AVFrame *src, int offset[4],
849
                            int y, int type, int height);
850

    
851
    /* audio only */
852
    int sample_rate; ///< samples per second
853
    int channels;
854

    
855
    /**
856
     * audio sample format
857
     * - encoding: Set by user.
858
     * - decoding: Set by libavcodec.
859
     */
860
    enum SampleFormat sample_fmt;  ///< sample format, currently unused
861

    
862
    /* The following data should not be initialized. */
863
    /**
864
     * Samples per packet, initialized when calling 'init'.
865
     */
866
    int frame_size;
867
    int frame_number;   ///< audio or video frame number
868
    int real_pict_num;  ///< Returns the real picture number of previous encoded frame.
869

    
870
    /**
871
     * Number of frames the decoded output will be delayed relative to
872
     * the encoded input.
873
     * - encoding: Set by libavcodec.
874
     * - decoding: unused
875
     */
876
    int delay;
877

    
878
    /* - encoding parameters */
879
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
880
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
881

    
882
    /**
883
     * minimum quantizer
884
     * - encoding: Set by user.
885
     * - decoding: unused
886
     */
887
    int qmin;
888

    
889
    /**
890
     * maximum quantizer
891
     * - encoding: Set by user.
892
     * - decoding: unused
893
     */
894
    int qmax;
895

    
896
    /**
897
     * maximum quantizer difference between frames
898
     * - encoding: Set by user.
899
     * - decoding: unused
900
     */
901
    int max_qdiff;
902

    
903
    /**
904
     * maximum number of B-frames between non-B-frames
905
     * Note: The output will be delayed by max_b_frames+1 relative to the input.
906
     * - encoding: Set by user.
907
     * - decoding: unused
908
     */
909
    int max_b_frames;
910

    
911
    /**
912
     * qscale factor between IP and B-frames
913
     * - encoding: Set by user.
914
     * - decoding: unused
915
     */
916
    float b_quant_factor;
917

    
918
    /** obsolete FIXME remove */
919
    int rc_strategy;
920
#define FF_RC_STRATEGY_XVID 1
921

    
922
    int b_frame_strategy;
923

    
924
    /**
925
     * hurry up amount
926
     * - encoding: unused
927
     * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header
928
     * @deprecated Deprecated in favor of skip_idct and skip_frame.
929
     */
930
    int hurry_up;
931

    
932
    struct AVCodec *codec;
933

    
934
    void *priv_data;
935

    
936
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
937
    /* unused, FIXME remove*/
938
    int rtp_mode;
939
#endif
940

    
941
    int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
942
                            /* do its best to deliver a chunk with size     */
943
                            /* below rtp_payload_size, the chunk will start */
944
                            /* with a start code on some codecs like H.263. */
945
                            /* This doesn't take account of any particular  */
946
                            /* headers inside the transmitted RTP payload.  */
947

    
948

    
949
    /* The RTP callback: This function is called    */
950
    /* every time the encoder has a packet to send. */
951
    /* It depends on the encoder if the data starts */
952
    /* with a Start Code (it should). H.263 does.   */
953
    /* mb_nb contains the number of macroblocks     */
954
    /* encoded in the RTP payload.                  */
955
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
956

    
957
    /* statistics, used for 2-pass encoding */
958
    int mv_bits;
959
    int header_bits;
960
    int i_tex_bits;
961
    int p_tex_bits;
962
    int i_count;
963
    int p_count;
964
    int skip_count;
965
    int misc_bits;
966

    
967
    /**
968
     * number of bits used for the previously encoded frame
969
     * - encoding: Set by libavcodec.
970
     * - decoding: unused
971
     */
972
    int frame_bits;
973

    
974
    /**
975
     * Private data of the user, can be used to carry app specific stuff.
976
     * - encoding: Set by user.
977
     * - decoding: Set by user.
978
     */
979
    void *opaque;
980

    
981
    char codec_name[32];
982
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
983
    enum CodecID codec_id; /* see CODEC_ID_xxx */
984

    
985
    /**
986
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
987
     * This is used to work around some encoder bugs.
988
     * A demuxer should set this to what is stored in the field used to identify the codec.
989
     * If there are multiple such fields in a container then the demuxer should choose the one
990
     * which maximizes the information about the used codec.
991
     * If the codec tag field in a container is larger then 32 bits then the demuxer should
992
     * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
993
     * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
994
     * first.
995
     * - encoding: Set by user, if not then the default based on codec_id will be used.
996
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
997
     */
998
    unsigned int codec_tag;
999

    
1000
    /**
1001
     * Work around bugs in encoders which sometimes cannot be detected automatically.
1002
     * - encoding: Set by user
1003
     * - decoding: Set by user
1004
     */
1005
    int workaround_bugs;
1006
#define FF_BUG_AUTODETECT       1  ///< autodetection
1007
#define FF_BUG_OLD_MSMPEG4      2
1008
#define FF_BUG_XVID_ILACE       4
1009
#define FF_BUG_UMP4             8
1010
#define FF_BUG_NO_PADDING       16
1011
#define FF_BUG_AMV              32
1012
#define FF_BUG_AC_VLC           0  ///< Will be removed, libavcodec can now handle these non-compliant files by default.
1013
#define FF_BUG_QPEL_CHROMA      64
1014
#define FF_BUG_STD_QPEL         128
1015
#define FF_BUG_QPEL_CHROMA2     256
1016
#define FF_BUG_DIRECT_BLOCKSIZE 512
1017
#define FF_BUG_EDGE             1024
1018
#define FF_BUG_HPEL_CHROMA      2048
1019
#define FF_BUG_DC_CLIP          4096
1020
#define FF_BUG_MS               8192 ///< Work around various bugs in Microsoft's broken decoders.
1021
//#define FF_BUG_FAKE_SCALABILITY 16 //Autodetection should work 100%.
1022

    
1023
    /**
1024
     * luma single coefficient elimination threshold
1025
     * - encoding: Set by user.
1026
     * - decoding: unused
1027
     */
1028
    int luma_elim_threshold;
1029

    
1030
    /**
1031
     * chroma single coeff elimination threshold
1032
     * - encoding: Set by user.
1033
     * - decoding: unused
1034
     */
1035
    int chroma_elim_threshold;
1036

    
1037
    /**
1038
     * strictly follow the standard (MPEG4, ...).
1039
     * - encoding: Set by user.
1040
     * - decoding: unused
1041
     */
1042
    int strict_std_compliance;
1043
#define FF_COMPLIANCE_VERY_STRICT   2 ///< Strictly conform to a older more strict version of the spec or reference software.
1044
#define FF_COMPLIANCE_STRICT        1 ///< Strictly conform to all the things in the spec no matter what consequences.
1045
#define FF_COMPLIANCE_NORMAL        0
1046
#define FF_COMPLIANCE_INOFFICIAL   -1 ///< Allow inofficial extensions.
1047
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things.
1048

    
1049
    /**
1050
     * qscale offset between IP and B-frames
1051
     * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
1052
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1053
     * - encoding: Set by user.
1054
     * - decoding: unused
1055
     */
1056
    float b_quant_offset;
1057

    
1058
    /**
1059
     * Error resilience; higher values will detect more errors but may
1060
     * misdetect some more or less valid parts as errors.
1061
     * - encoding: unused
1062
     * - decoding: Set by user.
1063
     */
1064
    int error_resilience;
1065
#define FF_ER_CAREFUL         1
1066
#define FF_ER_COMPLIANT       2
1067
#define FF_ER_AGGRESSIVE      3
1068
#define FF_ER_VERY_AGGRESSIVE 4
1069

    
1070
    /**
1071
     * Called at the beginning of each frame to get a buffer for it.
1072
     * If pic.reference is set then the frame will be read later by libavcodec.
1073
     * avcodec_align_dimensions() should be used to find the required width and
1074
     * height, as they normally need to be rounded up to the next multiple of 16.
1075
     * - encoding: unused
1076
     * - decoding: Set by libavcodec., user can override.
1077
     */
1078
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1079

    
1080
    /**
1081
     * Called to release buffers which where allocated with get_buffer.
1082
     * A released buffer can be reused in get_buffer().
1083
     * pic.data[*] must be set to NULL.
1084
     * - encoding: unused
1085
     * - decoding: Set by libavcodec., user can override.
1086
     */
1087
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1088

    
1089
    /**
1090
     * If 1 the stream has a 1 frame delay during decoding.
1091
     * - encoding: Set by libavcodec.
1092
     * - decoding: Set by libavcodec.
1093
     */
1094
    int has_b_frames;
1095

    
1096
    /**
1097
     * number of bytes per packet if constant and known or 0
1098
     * Used by some WAV based audio codecs.
1099
     */
1100
    int block_align;
1101

    
1102
    int parse_only; /* - decoding only: If true, only parsing is done
1103
                       (function avcodec_parse_frame()). The frame
1104
                       data is returned. Only MPEG codecs support this now. */
1105

    
1106
    /**
1107
     * 0-> h263 quant 1-> mpeg quant
1108
     * - encoding: Set by user.
1109
     * - decoding: unused
1110
     */
1111
    int mpeg_quant;
1112

    
1113
    /**
1114
     * pass1 encoding statistics output buffer
1115
     * - encoding: Set by libavcodec.
1116
     * - decoding: unused
1117
     */
1118
    char *stats_out;
1119

    
1120
    /**
1121
     * pass2 encoding statistics input buffer
1122
     * Concatenated stuff from stats_out of pass1 should be placed here.
1123
     * - encoding: Allocated/set/freed by user.
1124
     * - decoding: unused
1125
     */
1126
    char *stats_in;
1127

    
1128
    /**
1129
     * ratecontrol qmin qmax limiting method
1130
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
1131
     * - encoding: Set by user.
1132
     * - decoding: unused
1133
     */
1134
    float rc_qsquish;
1135

    
1136
    float rc_qmod_amp;
1137
    int rc_qmod_freq;
1138

    
1139
    /**
1140
     * ratecontrol override, see RcOverride
1141
     * - encoding: Allocated/set/freed by user.
1142
     * - decoding: unused
1143
     */
1144
    RcOverride *rc_override;
1145
    int rc_override_count;
1146

    
1147
    /**
1148
     * rate control equation
1149
     * - encoding: Set by user
1150
     * - decoding: unused
1151
     */
1152
    char *rc_eq;
1153

    
1154
    /**
1155
     * maximum bitrate
1156
     * - encoding: Set by user.
1157
     * - decoding: unused
1158
     */
1159
    int rc_max_rate;
1160

    
1161
    /**
1162
     * minimum bitrate
1163
     * - encoding: Set by user.
1164
     * - decoding: unused
1165
     */
1166
    int rc_min_rate;
1167

    
1168
    /**
1169
     * decoder bitstream buffer size
1170
     * - encoding: Set by user.
1171
     * - decoding: unused
1172
     */
1173
    int rc_buffer_size;
1174
    float rc_buffer_aggressivity;
1175

    
1176
    /**
1177
     * qscale factor between P and I-frames
1178
     * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
1179
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1180
     * - encoding: Set by user.
1181
     * - decoding: unused
1182
     */
1183
    float i_quant_factor;
1184

    
1185
    /**
1186
     * qscale offset between P and I-frames
1187
     * - encoding: Set by user.
1188
     * - decoding: unused
1189
     */
1190
    float i_quant_offset;
1191

    
1192
    /**
1193
     * initial complexity for pass1 ratecontrol
1194
     * - encoding: Set by user.
1195
     * - decoding: unused
1196
     */
1197
    float rc_initial_cplx;
1198

    
1199
    /**
1200
     * DCT algorithm, see FF_DCT_* below
1201
     * - encoding: Set by user.
1202
     * - decoding: unused
1203
     */
1204
    int dct_algo;
1205
#define FF_DCT_AUTO    0
1206
#define FF_DCT_FASTINT 1
1207
#define FF_DCT_INT     2
1208
#define FF_DCT_MMX     3
1209
#define FF_DCT_MLIB    4
1210
#define FF_DCT_ALTIVEC 5
1211
#define FF_DCT_FAAN    6
1212

    
1213
    /**
1214
     * luminance masking (0-> disabled)
1215
     * - encoding: Set by user.
1216
     * - decoding: unused
1217
     */
1218
    float lumi_masking;
1219

    
1220
    /**
1221
     * temporary complexity masking (0-> disabled)
1222
     * - encoding: Set by user.
1223
     * - decoding: unused
1224
     */
1225
    float temporal_cplx_masking;
1226

    
1227
    /**
1228
     * spatial complexity masking (0-> disabled)
1229
     * - encoding: Set by user.
1230
     * - decoding: unused
1231
     */
1232
    float spatial_cplx_masking;
1233

    
1234
    /**
1235
     * p block masking (0-> disabled)
1236
     * - encoding: Set by user.
1237
     * - decoding: unused
1238
     */
1239
    float p_masking;
1240

    
1241
    /**
1242
     * darkness masking (0-> disabled)
1243
     * - encoding: Set by user.
1244
     * - decoding: unused
1245
     */
1246
    float dark_masking;
1247

    
1248

    
1249
    /* for binary compatibility */
1250
    int unused;
1251

    
1252
    /**
1253
     * IDCT algorithm, see FF_IDCT_* below.
1254
     * - encoding: Set by user.
1255
     * - decoding: Set by user.
1256
     */
1257
    int idct_algo;
1258
#define FF_IDCT_AUTO         0
1259
#define FF_IDCT_INT          1
1260
#define FF_IDCT_SIMPLE       2
1261
#define FF_IDCT_SIMPLEMMX    3
1262
#define FF_IDCT_LIBMPEG2MMX  4
1263
#define FF_IDCT_PS2          5
1264
#define FF_IDCT_MLIB         6
1265
#define FF_IDCT_ARM          7
1266
#define FF_IDCT_ALTIVEC      8
1267
#define FF_IDCT_SH4          9
1268
#define FF_IDCT_SIMPLEARM    10
1269
#define FF_IDCT_H264         11
1270
#define FF_IDCT_VP3          12
1271
#define FF_IDCT_IPP          13
1272
#define FF_IDCT_XVIDMMX      14
1273
#define FF_IDCT_CAVS         15
1274
#define FF_IDCT_SIMPLEARMV5TE 16
1275
#define FF_IDCT_SIMPLEARMV6  17
1276

    
1277
    /**
1278
     * slice count
1279
     * - encoding: Set by libavcodec.
1280
     * - decoding: Set by user (or 0).
1281
     */
1282
    int slice_count;
1283
    /**
1284
     * slice offsets in the frame in bytes
1285
     * - encoding: Set/allocated by libavcodec.
1286
     * - decoding: Set/allocated by user (or NULL).
1287
     */
1288
    int *slice_offset;
1289

    
1290
    /**
1291
     * error concealment flags
1292
     * - encoding: unused
1293
     * - decoding: Set by user.
1294
     */
1295
    int error_concealment;
1296
#define FF_EC_GUESS_MVS   1
1297
#define FF_EC_DEBLOCK     2
1298

    
1299
    /**
1300
     * dsp_mask could be add used to disable unwanted CPU features
1301
     * CPU features (i.e. MMX, SSE. ...)
1302
     *
1303
     * With the FORCE flag you may instead enable given CPU features.
1304
     * (Dangerous: Usable in case of misdetection, improper usage however will
1305
     * result into program crash.)
1306
     */
1307
    unsigned dsp_mask;
1308
#define FF_MM_FORCE    0x80000000 /* Force usage of selected flags (OR) */
1309
    /* lower 16 bits - CPU features */
1310
#ifdef HAVE_MMX
1311
#define FF_MM_MMX      0x0001 /* standard MMX */
1312
#define FF_MM_3DNOW    0x0004 /* AMD 3DNOW */
1313
#define FF_MM_MMXEXT   0x0002 /* SSE integer functions or AMD MMX ext */
1314
#define FF_MM_SSE      0x0008 /* SSE functions */
1315
#define FF_MM_SSE2     0x0010 /* PIV SSE2 functions */
1316
#define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1317
#endif /* HAVE_MMX */
1318
#ifdef HAVE_IWMMXT
1319
#define FF_MM_IWMMXT   0x0100 /* XScale IWMMXT */
1320
#endif /* HAVE_IWMMXT */
1321

    
1322
    /**
1323
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1324
     * - encoding: Set by libavcodec.
1325
     * - decoding: Set by user.
1326
     */
1327
     int bits_per_sample;
1328

    
1329
    /**
1330
     * prediction method (needed for huffyuv)
1331
     * - encoding: Set by user.
1332
     * - decoding: unused
1333
     */
1334
     int prediction_method;
1335
#define FF_PRED_LEFT   0
1336
#define FF_PRED_PLANE  1
1337
#define FF_PRED_MEDIAN 2
1338

    
1339
    /**
1340
     * sample aspect ratio (0 if unknown)
1341
     * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
1342
     * - encoding: Set by user.
1343
     * - decoding: Set by libavcodec.
1344
     */
1345
    AVRational sample_aspect_ratio;
1346

    
1347
    /**
1348
     * the picture in the bitstream
1349
     * - encoding: Set by libavcodec.
1350
     * - decoding: Set by libavcodec.
1351
     */
1352
    AVFrame *coded_frame;
1353

    
1354
    /**
1355
     * debug
1356
     * - encoding: Set by user.
1357
     * - decoding: Set by user.
1358
     */
1359
    int debug;
1360
#define FF_DEBUG_PICT_INFO 1
1361
#define FF_DEBUG_RC        2
1362
#define FF_DEBUG_BITSTREAM 4
1363
#define FF_DEBUG_MB_TYPE   8
1364
#define FF_DEBUG_QP        16
1365
#define FF_DEBUG_MV        32
1366
#define FF_DEBUG_DCT_COEFF 0x00000040
1367
#define FF_DEBUG_SKIP      0x00000080
1368
#define FF_DEBUG_STARTCODE 0x00000100
1369
#define FF_DEBUG_PTS       0x00000200
1370
#define FF_DEBUG_ER        0x00000400
1371
#define FF_DEBUG_MMCO      0x00000800
1372
#define FF_DEBUG_BUGS      0x00001000
1373
#define FF_DEBUG_VIS_QP    0x00002000
1374
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1375

    
1376
    /**
1377
     * debug
1378
     * - encoding: Set by user.
1379
     * - decoding: Set by user.
1380
     */
1381
    int debug_mv;
1382
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1383
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1384
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1385

    
1386
    /**
1387
     * error
1388
     * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
1389
     * - decoding: unused
1390
     */
1391
    uint64_t error[4];
1392

    
1393
    /**
1394
     * minimum MB quantizer
1395
     * - encoding: unused
1396
     * - decoding: unused
1397
     */
1398
    int mb_qmin;
1399

    
1400
    /**
1401
     * maximum MB quantizer
1402
     * - encoding: unused
1403
     * - decoding: unused
1404
     */
1405
    int mb_qmax;
1406

    
1407
    /**
1408
     * motion estimation comparison function
1409
     * - encoding: Set by user.
1410
     * - decoding: unused
1411
     */
1412
    int me_cmp;
1413
    /**
1414
     * subpixel motion estimation comparison function
1415
     * - encoding: Set by user.
1416
     * - decoding: unused
1417
     */
1418
    int me_sub_cmp;
1419
    /**
1420
     * macroblock comparison function (not supported yet)
1421
     * - encoding: Set by user.
1422
     * - decoding: unused
1423
     */
1424
    int mb_cmp;
1425
    /**
1426
     * interlaced DCT comparison function
1427
     * - encoding: Set by user.
1428
     * - decoding: unused
1429
     */
1430
    int ildct_cmp;
1431
#define FF_CMP_SAD  0
1432
#define FF_CMP_SSE  1
1433
#define FF_CMP_SATD 2
1434
#define FF_CMP_DCT  3
1435
#define FF_CMP_PSNR 4
1436
#define FF_CMP_BIT  5
1437
#define FF_CMP_RD   6
1438
#define FF_CMP_ZERO 7
1439
#define FF_CMP_VSAD 8
1440
#define FF_CMP_VSSE 9
1441
#define FF_CMP_NSSE 10
1442
#define FF_CMP_W53  11
1443
#define FF_CMP_W97  12
1444
#define FF_CMP_DCTMAX 13
1445
#define FF_CMP_DCT264 14
1446
#define FF_CMP_CHROMA 256
1447

    
1448
    /**
1449
     * ME diamond size & shape
1450
     * - encoding: Set by user.
1451
     * - decoding: unused
1452
     */
1453
    int dia_size;
1454

    
1455
    /**
1456
     * amount of previous MV predictors (2a+1 x 2a+1 square)
1457
     * - encoding: Set by user.
1458
     * - decoding: unused
1459
     */
1460
    int last_predictor_count;
1461

    
1462
    /**
1463
     * prepass for motion estimation
1464
     * - encoding: Set by user.
1465
     * - decoding: unused
1466
     */
1467
    int pre_me;
1468

    
1469
    /**
1470
     * motion estimation prepass comparison function
1471
     * - encoding: Set by user.
1472
     * - decoding: unused
1473
     */
1474
    int me_pre_cmp;
1475

    
1476
    /**
1477
     * ME prepass diamond size & shape
1478
     * - encoding: Set by user.
1479
     * - decoding: unused
1480
     */
1481
    int pre_dia_size;
1482

    
1483
    /**
1484
     * subpel ME quality
1485
     * - encoding: Set by user.
1486
     * - decoding: unused
1487
     */
1488
    int me_subpel_quality;
1489

    
1490
    /**
1491
     * callback to negotiate the pixelFormat
1492
     * @param fmt is the list of formats which are supported by the codec,
1493
     * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
1494
     * The first is always the native one.
1495
     * @return the chosen format
1496
     * - encoding: unused
1497
     * - decoding: Set by user, if not set the native format will be chosen.
1498
     */
1499
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1500

    
1501
    /**
1502
     * DTG active format information (additional aspect ratio
1503
     * information only used in DVB MPEG-2 transport streams)
1504
     * 0 if not set.
1505
     *
1506
     * - encoding: unused
1507
     * - decoding: Set by decoder.
1508
     */
1509
    int dtg_active_format;
1510
#define FF_DTG_AFD_SAME         8
1511
#define FF_DTG_AFD_4_3          9
1512
#define FF_DTG_AFD_16_9         10
1513
#define FF_DTG_AFD_14_9         11
1514
#define FF_DTG_AFD_4_3_SP_14_9  13
1515
#define FF_DTG_AFD_16_9_SP_14_9 14
1516
#define FF_DTG_AFD_SP_4_3       15
1517

    
1518
    /**
1519
     * maximum motion estimation search range in subpel units
1520
     * If 0 then no limit.
1521
     *
1522
     * - encoding: Set by user.
1523
     * - decoding: unused
1524
     */
1525
    int me_range;
1526

    
1527
    /**
1528
     * intra quantizer bias
1529
     * - encoding: Set by user.
1530
     * - decoding: unused
1531
     */
1532
    int intra_quant_bias;
1533
#define FF_DEFAULT_QUANT_BIAS 999999
1534

    
1535
    /**
1536
     * inter quantizer bias
1537
     * - encoding: Set by user.
1538
     * - decoding: unused
1539
     */
1540
    int inter_quant_bias;
1541

    
1542
    /**
1543
     * color table ID
1544
     * - encoding: unused
1545
     * - decoding: Which clrtable should be used for 8bit RGB images.
1546
     *             Tables have to be stored somewhere. FIXME
1547
     */
1548
    int color_table_id;
1549

    
1550
    /**
1551
     * internal_buffer count
1552
     * Don't touch, used by libavcodec default_get_buffer().
1553
     */
1554
    int internal_buffer_count;
1555

    
1556
    /**
1557
     * internal_buffers
1558
     * Don't touch, used by libavcodec default_get_buffer().
1559
     */
1560
    void *internal_buffer;
1561

    
1562
#define FF_LAMBDA_SHIFT 7
1563
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1564
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1565
#define FF_LAMBDA_MAX (256*128-1)
1566

    
1567
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1568
    /**
1569
     * Global quality for codecs which cannot change it per frame.
1570
     * This should be proportional to MPEG-1/2/4 qscale.
1571
     * - encoding: Set by user.
1572
     * - decoding: unused
1573
     */
1574
    int global_quality;
1575

    
1576
#define FF_CODER_TYPE_VLC       0
1577
#define FF_CODER_TYPE_AC        1
1578
#define FF_CODER_TYPE_RAW       2
1579
#define FF_CODER_TYPE_RLE       3
1580
#define FF_CODER_TYPE_DEFLATE   4
1581
    /**
1582
     * coder type
1583
     * - encoding: Set by user.
1584
     * - decoding: unused
1585
     */
1586
    int coder_type;
1587

    
1588
    /**
1589
     * context model
1590
     * - encoding: Set by user.
1591
     * - decoding: unused
1592
     */
1593
    int context_model;
1594
#if 0
1595
    /**
1596
     *
1597
     * - encoding: unused
1598
     * - decoding: Set by user.
1599
     */
1600
    uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1601
#endif
1602

    
1603
    /**
1604
     * slice flags
1605
     * - encoding: unused
1606
     * - decoding: Set by user.
1607
     */
1608
    int slice_flags;
1609
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1610
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1611
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1612

    
1613
    /**
1614
     * XVideo Motion Acceleration
1615
     * - encoding: forbidden
1616
     * - decoding: set by decoder
1617
     */
1618
    int xvmc_acceleration;
1619

    
1620
    /**
1621
     * macroblock decision mode
1622
     * - encoding: Set by user.
1623
     * - decoding: unused
1624
     */
1625
    int mb_decision;
1626
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1627
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1628
#define FF_MB_DECISION_RD     2        ///< rate distoration
1629

    
1630
    /**
1631
     * custom intra quantization matrix
1632
     * - encoding: Set by user, can be NULL.
1633
     * - decoding: Set by libavcodec.
1634
     */
1635
    uint16_t *intra_matrix;
1636

    
1637
    /**
1638
     * custom inter quantization matrix
1639
     * - encoding: Set by user, can be NULL.
1640
     * - decoding: Set by libavcodec.
1641
     */
1642
    uint16_t *inter_matrix;
1643

    
1644
    /**
1645
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1646
     * This is used to work around some encoder bugs.
1647
     * - encoding: unused
1648
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
1649
     */
1650
    unsigned int stream_codec_tag;
1651

    
1652
    /**
1653
     * scene change detection threshold
1654
     * 0 is default, larger means fewer detected scene changes.
1655
     * - encoding: Set by user.
1656
     * - decoding: unused
1657
     */
1658
    int scenechange_threshold;
1659

    
1660
    /**
1661
     * minimum Lagrange multipler
1662
     * - encoding: Set by user.
1663
     * - decoding: unused
1664
     */
1665
    int lmin;
1666

    
1667
    /**
1668
     * maximum Lagrange multipler
1669
     * - encoding: Set by user.
1670
     * - decoding: unused
1671
     */
1672
    int lmax;
1673

    
1674
    /**
1675
     * palette control structure
1676
     * - encoding: ??? (no palette-enabled encoder yet)
1677
     * - decoding: Set by user.
1678
     */
1679
    struct AVPaletteControl *palctrl;
1680

    
1681
    /**
1682
     * noise reduction strength
1683
     * - encoding: Set by user.
1684
     * - decoding: unused
1685
     */
1686
    int noise_reduction;
1687

    
1688
    /**
1689
     * Called at the beginning of a frame to get cr buffer for it.
1690
     * Buffer type (size, hints) must be the same. libavcodec won't check it.
1691
     * libavcodec will pass previous buffer in pic, function should return
1692
     * same buffer or new buffer with old frame "painted" into it.
1693
     * If pic.data[0] == NULL must behave like get_buffer().
1694
     * - encoding: unused
1695
     * - decoding: Set by libavcodec., user can override
1696
     */
1697
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1698

    
1699
    /**
1700
     * Number of bits which should be loaded into the rc buffer before decoding starts.
1701
     * - encoding: Set by user.
1702
     * - decoding: unused
1703
     */
1704
    int rc_initial_buffer_occupancy;
1705

    
1706
    /**
1707
     *
1708
     * - encoding: Set by user.
1709
     * - decoding: unused
1710
     */
1711
    int inter_threshold;
1712

    
1713
    /**
1714
     * CODEC_FLAG2_*
1715
     * - encoding: Set by user.
1716
     * - decoding: Set by user.
1717
     */
1718
    int flags2;
1719

    
1720
    /**
1721
     * Simulates errors in the bitstream to test error concealment.
1722
     * - encoding: Set by user.
1723
     * - decoding: unused
1724
     */
1725
    int error_rate;
1726

    
1727
    /**
1728
     * MP3 antialias algorithm, see FF_AA_* below.
1729
     * - encoding: unused
1730
     * - decoding: Set by user.
1731
     */
1732
    int antialias_algo;
1733
#define FF_AA_AUTO    0
1734
#define FF_AA_FASTINT 1 //not implemented yet
1735
#define FF_AA_INT     2
1736
#define FF_AA_FLOAT   3
1737
    /**
1738
     * quantizer noise shaping
1739
     * - encoding: Set by user.
1740
     * - decoding: unused
1741
     */
1742
    int quantizer_noise_shaping;
1743

    
1744
    /**
1745
     * thread count
1746
     * is used to decide how many independent tasks should be passed to execute()
1747
     * - encoding: Set by user.
1748
     * - decoding: Set by user.
1749
     */
1750
    int thread_count;
1751

    
1752
    /**
1753
     * The codec may call this to execute several independent things.
1754
     * It will return only after finishing all tasks.
1755
     * The user may replace this with some multithreaded implementation,
1756
     * the default implementation will execute the parts serially.
1757
     * @param count the number of things to execute
1758
     * - encoding: Set by libavcodec, user can override.
1759
     * - decoding: Set by libavcodec, user can override.
1760
     */
1761
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1762

    
1763
    /**
1764
     * thread opaque
1765
     * Can be used by execute() to store some per AVCodecContext stuff.
1766
     * - encoding: set by execute()
1767
     * - decoding: set by execute()
1768
     */
1769
    void *thread_opaque;
1770

    
1771
    /**
1772
     * Motion estimation threshold below which no motion estimation is
1773
     * performed, but instead the user specified motion vectors are used.
1774
     *
1775
     * - encoding: Set by user.
1776
     * - decoding: unused
1777
     */
1778
     int me_threshold;
1779

    
1780
    /**
1781
     * Macroblock threshold below which the user specified macroblock types will be used.
1782
     * - encoding: Set by user.
1783
     * - decoding: unused
1784
     */
1785
     int mb_threshold;
1786

    
1787
    /**
1788
     * precision of the intra DC coefficient - 8
1789
     * - encoding: Set by user.
1790
     * - decoding: unused
1791
     */
1792
     int intra_dc_precision;
1793

    
1794
    /**
1795
     * noise vs. sse weight for the nsse comparsion function
1796
     * - encoding: Set by user.
1797
     * - decoding: unused
1798
     */
1799
     int nsse_weight;
1800

    
1801
    /**
1802
     * Number of macroblock rows at the top which are skipped.
1803
     * - encoding: unused
1804
     * - decoding: Set by user.
1805
     */
1806
     int skip_top;
1807

    
1808
    /**
1809
     * Number of macroblock rows at the bottom which are skipped.
1810
     * - encoding: unused
1811
     * - decoding: Set by user.
1812
     */
1813
     int skip_bottom;
1814

    
1815
    /**
1816
     * profile
1817
     * - encoding: Set by user.
1818
     * - decoding: Set by libavcodec.
1819
     */
1820
     int profile;
1821
#define FF_PROFILE_UNKNOWN -99
1822

    
1823
    /**
1824
     * level
1825
     * - encoding: Set by user.
1826
     * - decoding: Set by libavcodec.
1827
     */
1828
     int level;
1829
#define FF_LEVEL_UNKNOWN -99
1830

    
1831
    /**
1832
     * low resolution decoding, 1-> 1/2 size, 2->1/4 size
1833
     * - encoding: unused
1834
     * - decoding: Set by user.
1835
     */
1836
     int lowres;
1837

    
1838
    /**
1839
     * Bitstream width / height, may be different from width/height if lowres
1840
     * or other things are used.
1841
     * - encoding: unused
1842
     * - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
1843
     */
1844
    int coded_width, coded_height;
1845

    
1846
    /**
1847
     * frame skip threshold
1848
     * - encoding: Set by user.
1849
     * - decoding: unused
1850
     */
1851
    int frame_skip_threshold;
1852

    
1853
    /**
1854
     * frame skip factor
1855
     * - encoding: Set by user.
1856
     * - decoding: unused
1857
     */
1858
    int frame_skip_factor;
1859

    
1860
    /**
1861
     * frame skip exponent
1862
     * - encoding: Set by user.
1863
     * - decoding: unused
1864
     */
1865
    int frame_skip_exp;
1866

    
1867
    /**
1868
     * frame skip comparison function
1869
     * - encoding: Set by user.
1870
     * - decoding: unused
1871
     */
1872
    int frame_skip_cmp;
1873

    
1874
    /**
1875
     * Border processing masking, raises the quantizer for mbs on the borders
1876
     * of the picture.
1877
     * - encoding: Set by user.
1878
     * - decoding: unused
1879
     */
1880
    float border_masking;
1881

    
1882
    /**
1883
     * minimum MB lagrange multipler
1884
     * - encoding: Set by user.
1885
     * - decoding: unused
1886
     */
1887
    int mb_lmin;
1888

    
1889
    /**
1890
     * maximum MB lagrange multipler
1891
     * - encoding: Set by user.
1892
     * - decoding: unused
1893
     */
1894
    int mb_lmax;
1895

    
1896
    /**
1897
     *
1898
     * - encoding: Set by user.
1899
     * - decoding: unused
1900
     */
1901
    int me_penalty_compensation;
1902

    
1903
    /**
1904
     *
1905
     * - encoding: unused
1906
     * - decoding: Set by user.
1907
     */
1908
    enum AVDiscard skip_loop_filter;
1909

    
1910
    /**
1911
     *
1912
     * - encoding: unused
1913
     * - decoding: Set by user.
1914
     */
1915
    enum AVDiscard skip_idct;
1916

    
1917
    /**
1918
     *
1919
     * - encoding: unused
1920
     * - decoding: Set by user.
1921
     */
1922
    enum AVDiscard skip_frame;
1923

    
1924
    /**
1925
     *
1926
     * - encoding: Set by user.
1927
     * - decoding: unused
1928
     */
1929
    int bidir_refine;
1930

    
1931
    /**
1932
     *
1933
     * - encoding: Set by user.
1934
     * - decoding: unused
1935
     */
1936
    int brd_scale;
1937

    
1938
    /**
1939
     * constant rate factor - quality-based VBR - values ~correspond to qps
1940
     * - encoding: Set by user.
1941
     * - decoding: unused
1942
     */
1943
    float crf;
1944

    
1945
    /**
1946
     * constant quantization parameter rate control method
1947
     * - encoding: Set by user.
1948
     * - decoding: unused
1949
     */
1950
    int cqp;
1951

    
1952
    /**
1953
     * minimum GOP size
1954
     * - encoding: Set by user.
1955
     * - decoding: unused
1956
     */
1957
    int keyint_min;
1958

    
1959
    /**
1960
     * number of reference frames
1961
     * - encoding: Set by user.
1962
     * - decoding: unused
1963
     */
1964
    int refs;
1965

    
1966
    /**
1967
     * chroma qp offset from luma
1968
     * - encoding: Set by user.
1969
     * - decoding: unused
1970
     */
1971
    int chromaoffset;
1972

    
1973
    /**
1974
     * Influences how often B-frames are used.
1975
     * - encoding: Set by user.
1976
     * - decoding: unused
1977
     */
1978
    int bframebias;
1979

    
1980
    /**
1981
     * trellis RD quantization
1982
     * - encoding: Set by user.
1983
     * - decoding: unused
1984
     */
1985
    int trellis;
1986

    
1987
    /**
1988
     * Reduce fluctuations in qp (before curve compression).
1989
     * - encoding: Set by user.
1990
     * - decoding: unused
1991
     */
1992
    float complexityblur;
1993

    
1994
    /**
1995
     * in-loop deblocking filter alphac0 parameter
1996
     * alpha is in the range -6...6
1997
     * - encoding: Set by user.
1998
     * - decoding: unused
1999
     */
2000
    int deblockalpha;
2001

    
2002
    /**
2003
     * in-loop deblocking filter beta parameter
2004
     * beta is in the range -6...6
2005
     * - encoding: Set by user.
2006
     * - decoding: unused
2007
     */
2008
    int deblockbeta;
2009

    
2010
    /**
2011
     * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
2012
     * - encoding: Set by user.
2013
     * - decoding: unused
2014
     */
2015
    int partitions;
2016
#define X264_PART_I4X4 0x001  /* Analyse i4x4 */
2017
#define X264_PART_I8X8 0x002  /* Analyse i8x8 (requires 8x8 transform) */
2018
#define X264_PART_P8X8 0x010  /* Analyse p16x8, p8x16 and p8x8 */
2019
#define X264_PART_P4X4 0x020  /* Analyse p8x4, p4x8, p4x4 */
2020
#define X264_PART_B8X8 0x100  /* Analyse b16x8, b8x16 and b8x8 */
2021

    
2022
    /**
2023
     * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal)
2024
     * - encoding: Set by user.
2025
     * - decoding: unused
2026
     */
2027
    int directpred;
2028

    
2029
    /**
2030
     * Audio cutoff bandwidth (0 means "automatic"), currently used only by FAAC.
2031
     * - encoding: Set by user.
2032
     * - decoding: unused
2033
     */
2034
    int cutoff;
2035

    
2036
    /**
2037
     * Multiplied by qscale for each frame and added to scene_change_score.
2038
     * - encoding: Set by user.
2039
     * - decoding: unused
2040
     */
2041
    int scenechange_factor;
2042

    
2043
    /**
2044
     *
2045
     * Note: Value depends upon the compare function used for fullpel ME.
2046
     * - encoding: Set by user.
2047
     * - decoding: unused
2048
     */
2049
    int mv0_threshold;
2050

    
2051
    /**
2052
     * Adjusts sensitivity of b_frame_strategy 1.
2053
     * - encoding: Set by user.
2054
     * - decoding: unused
2055
     */
2056
    int b_sensitivity;
2057

    
2058
    /**
2059
     * - encoding: Set by user.
2060
     * - decoding: unused
2061
     */
2062
    int compression_level;
2063
#define FF_COMPRESSION_DEFAULT -1
2064

    
2065
    /**
2066
     * Sets whether to use LPC mode - used by FLAC encoder.
2067
     * - encoding: Set by user.
2068
     * - decoding: unused
2069
     */
2070
    int use_lpc;
2071

    
2072
    /**
2073
     * LPC coefficient precision - used by FLAC encoder
2074
     * - encoding: Set by user.
2075
     * - decoding: unused
2076
     */
2077
    int lpc_coeff_precision;
2078

    
2079
    /**
2080
     * - encoding: Set by user.
2081
     * - decoding: unused
2082
     */
2083
    int min_prediction_order;
2084

    
2085
    /**
2086
     * - encoding: Set by user.
2087
     * - decoding: unused
2088
     */
2089
    int max_prediction_order;
2090

    
2091
    /**
2092
     * search method for selecting prediction order
2093
     * - encoding: Set by user.
2094
     * - decoding: unused
2095
     */
2096
    int prediction_order_method;
2097

    
2098
    /**
2099
     * - encoding: Set by user.
2100
     * - decoding: unused
2101
     */
2102
    int min_partition_order;
2103

    
2104
    /**
2105
     * - encoding: Set by user.
2106
     * - decoding: unused
2107
     */
2108
    int max_partition_order;
2109

    
2110
    /**
2111
     * GOP timecode frame start number, in non drop frame format
2112
     * - encoding: Set by user.
2113
     * - decoding: unused
2114
     */
2115
    int64_t timecode_frame_start;
2116
} AVCodecContext;
2117

    
2118
/**
2119
 * AVCodec.
2120
 */
2121
typedef struct AVCodec {
2122
    const char *name;
2123
    enum CodecType type;
2124
    enum CodecID id;
2125
    int priv_data_size;
2126
    int (*init)(AVCodecContext *);
2127
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2128
    int (*close)(AVCodecContext *);
2129
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2130
                  uint8_t *buf, int buf_size);
2131
    int capabilities;
2132
    struct AVCodec *next;
2133
    void (*flush)(AVCodecContext *);
2134
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2135
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2136
} AVCodec;
2137

    
2138
/**
2139
 * four components are given, that's all.
2140
 * the last component is alpha
2141
 */
2142
typedef struct AVPicture {
2143
    uint8_t *data[4];
2144
    int linesize[4];       ///< number of bytes per line
2145
} AVPicture;
2146

    
2147
/**
2148
 * AVPaletteControl
2149
 * This structure defines a method for communicating palette changes
2150
 * between and demuxer and a decoder.
2151
 * This is totally broken, palette changes should be sent as AVPackets.
2152
 */
2153
#define AVPALETTE_SIZE 1024
2154
#define AVPALETTE_COUNT 256
2155
typedef struct AVPaletteControl {
2156

    
2157
    /* Demuxer sets this to 1 to indicate the palette has changed;
2158
     * decoder resets to 0. */
2159
    int palette_changed;
2160

    
2161
    /* 4-byte ARGB palette entries, stored in native byte order; note that
2162
     * the individual palette components should be on a 8-bit scale; if
2163
     * the palette data comes from an IBM VGA native format, the component
2164
     * data is probably 6 bits in size and needs to be scaled. */
2165
    unsigned int palette[AVPALETTE_COUNT];
2166

    
2167
} AVPaletteControl attribute_deprecated;
2168

    
2169
typedef struct AVSubtitleRect {
2170
    uint16_t x;
2171
    uint16_t y;
2172
    uint16_t w;
2173
    uint16_t h;
2174
    uint16_t nb_colors;
2175
    int linesize;
2176
    uint32_t *rgba_palette;
2177
    uint8_t *bitmap;
2178
} AVSubtitleRect;
2179

    
2180
typedef struct AVSubtitle {
2181
    uint16_t format; /* 0 = graphics */
2182
    uint32_t start_display_time; /* relative to packet pts, in ms */
2183
    uint32_t end_display_time; /* relative to packet pts, in ms */
2184
    uint32_t num_rects;
2185
    AVSubtitleRect *rects;
2186
} AVSubtitle;
2187

    
2188
extern AVCodec ac3_encoder;
2189
extern AVCodec amr_nb_encoder;
2190
extern AVCodec amr_wb_encoder;
2191
extern AVCodec asv1_encoder;
2192
extern AVCodec asv2_encoder;
2193
extern AVCodec bmp_encoder;
2194
extern AVCodec dvvideo_encoder;
2195
extern AVCodec faac_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 libgsm_encoder;
2209
extern AVCodec libgsm_ms_encoder;
2210
extern AVCodec libtheora_encoder;
2211
extern AVCodec ljpeg_encoder;
2212
extern AVCodec mdec_encoder;
2213
extern AVCodec mjpeg_encoder;
2214
extern AVCodec mp2_encoder;
2215
extern AVCodec mp3lame_encoder;
2216
extern AVCodec mpeg1video_encoder;
2217
extern AVCodec mpeg2video_encoder;
2218
extern AVCodec mpeg4_encoder;
2219
extern AVCodec msmpeg4v1_encoder;
2220
extern AVCodec msmpeg4v2_encoder;
2221
extern AVCodec msmpeg4v3_encoder;
2222
extern AVCodec oggvorbis_encoder;
2223
extern AVCodec pam_encoder;
2224
extern AVCodec pbm_encoder;
2225
extern AVCodec pgm_encoder;
2226
extern AVCodec pgmyuv_encoder;
2227
extern AVCodec png_encoder;
2228
extern AVCodec ppm_encoder;
2229
extern AVCodec rv10_encoder;
2230
extern AVCodec rv20_encoder;
2231
extern AVCodec sgi_encoder;
2232
extern AVCodec snow_encoder;
2233
extern AVCodec sonic_encoder;
2234
extern AVCodec sonic_ls_encoder;
2235
extern AVCodec svq1_encoder;
2236
extern AVCodec targa_encoder;
2237
extern AVCodec tiff_encoder;
2238
extern AVCodec vcr1_encoder;
2239
extern AVCodec vorbis_encoder;
2240
extern AVCodec wmav1_encoder;
2241
extern AVCodec wmav2_encoder;
2242
extern AVCodec wmv1_encoder;
2243
extern AVCodec wmv2_encoder;
2244
extern AVCodec x264_encoder;
2245
extern AVCodec xvid_encoder;
2246
extern AVCodec zlib_encoder;
2247
extern AVCodec zmbv_encoder;
2248

    
2249
extern AVCodec aac_decoder;
2250
extern AVCodec aasc_decoder;
2251
extern AVCodec alac_decoder;
2252
extern AVCodec amr_nb_decoder;
2253
extern AVCodec amr_wb_decoder;
2254
extern AVCodec asv1_decoder;
2255
extern AVCodec asv2_decoder;
2256
extern AVCodec atrac3_decoder;
2257
extern AVCodec avs_decoder;
2258
extern AVCodec bethsoftvid_decoder;
2259
extern AVCodec bmp_decoder;
2260
extern AVCodec c93_decoder;
2261
extern AVCodec cavs_decoder;
2262
extern AVCodec cinepak_decoder;
2263
extern AVCodec cljr_decoder;
2264
extern AVCodec cook_decoder;
2265
extern AVCodec cscd_decoder;
2266
extern AVCodec cyuv_decoder;
2267
extern AVCodec dca_decoder;
2268
extern AVCodec dnxhd_decoder;
2269
extern AVCodec dsicinaudio_decoder;
2270
extern AVCodec dsicinvideo_decoder;
2271
extern AVCodec dvvideo_decoder;
2272
extern AVCodec dxa_decoder;
2273
extern AVCodec eightbps_decoder;
2274
extern AVCodec ffv1_decoder;
2275
extern AVCodec ffvhuff_decoder;
2276
extern AVCodec flac_decoder;
2277
extern AVCodec flashsv_decoder;
2278
extern AVCodec flic_decoder;
2279
extern AVCodec flv_decoder;
2280
extern AVCodec fourxm_decoder;
2281
extern AVCodec fraps_decoder;
2282
extern AVCodec gif_decoder;
2283
extern AVCodec h261_decoder;
2284
extern AVCodec h263_decoder;
2285
extern AVCodec h263i_decoder;
2286
extern AVCodec h264_decoder;
2287
extern AVCodec huffyuv_decoder;
2288
extern AVCodec idcin_decoder;
2289
extern AVCodec imc_decoder;
2290
extern AVCodec indeo2_decoder;
2291
extern AVCodec indeo3_decoder;
2292
extern AVCodec interplay_dpcm_decoder;
2293
extern AVCodec interplay_video_decoder;
2294
extern AVCodec kmvc_decoder;
2295
extern AVCodec libgsm_decoder;
2296
extern AVCodec libgsm_ms_decoder;
2297
extern AVCodec loco_decoder;
2298
extern AVCodec mace3_decoder;
2299
extern AVCodec mace6_decoder;
2300
extern AVCodec mdec_decoder;
2301
extern AVCodec mjpeg_decoder;
2302
extern AVCodec mjpegb_decoder;
2303
extern AVCodec mmvideo_decoder;
2304
extern AVCodec mp2_decoder;
2305
extern AVCodec mp3_decoder;
2306
extern AVCodec mp3adu_decoder;
2307
extern AVCodec mp3on4_decoder;
2308
extern AVCodec mpc7_decoder;
2309
extern AVCodec mpeg1video_decoder;
2310
extern AVCodec mpeg2video_decoder;
2311
extern AVCodec mpeg4_decoder;
2312
extern AVCodec mpeg4aac_decoder;
2313
extern AVCodec mpeg_xvmc_decoder;
2314
extern AVCodec mpegvideo_decoder;
2315
extern AVCodec msmpeg4v1_decoder;
2316
extern AVCodec msmpeg4v2_decoder;
2317
extern AVCodec msmpeg4v3_decoder;
2318
extern AVCodec msrle_decoder;
2319
extern AVCodec msvideo1_decoder;
2320
extern AVCodec mszh_decoder;
2321
extern AVCodec nuv_decoder;
2322
extern AVCodec oggvorbis_decoder;
2323
extern AVCodec png_decoder;
2324
extern AVCodec qdm2_decoder;
2325
extern AVCodec qdraw_decoder;
2326
extern AVCodec qpeg_decoder;
2327
extern AVCodec qtrle_decoder;
2328
extern AVCodec ra_144_decoder;
2329
extern AVCodec ra_288_decoder;
2330
extern AVCodec roq_decoder;
2331
extern AVCodec roq_dpcm_decoder;
2332
extern AVCodec rpza_decoder;
2333
extern AVCodec rv10_decoder;
2334
extern AVCodec rv20_decoder;
2335
extern AVCodec rv30_decoder;
2336
extern AVCodec rv40_decoder;
2337
extern AVCodec sgi_decoder;
2338
extern AVCodec shorten_decoder;
2339
extern AVCodec smackaud_decoder;
2340
extern AVCodec smacker_decoder;
2341
extern AVCodec smc_decoder;
2342
extern AVCodec snow_decoder;
2343
extern AVCodec sol_dpcm_decoder;
2344
extern AVCodec sonic_decoder;
2345
extern AVCodec sp5x_decoder;
2346
extern AVCodec svq1_decoder;
2347
extern AVCodec svq3_decoder;
2348
extern AVCodec targa_decoder;
2349
extern AVCodec theora_decoder;
2350
extern AVCodec thp_decoder;
2351
extern AVCodec tiertexseqvideo_decoder;
2352
extern AVCodec tiff_decoder;
2353
extern AVCodec truemotion1_decoder;
2354
extern AVCodec truemotion2_decoder;
2355
extern AVCodec truespeech_decoder;
2356
extern AVCodec tscc_decoder;
2357
extern AVCodec tta_decoder;
2358
extern AVCodec ulti_decoder;
2359
extern AVCodec vc1_decoder;
2360
extern AVCodec vcr1_decoder;
2361
extern AVCodec vmdaudio_decoder;
2362
extern AVCodec vmdvideo_decoder;
2363
extern AVCodec vmnc_decoder;
2364
extern AVCodec vorbis_decoder;
2365
extern AVCodec vp3_decoder;
2366
extern AVCodec vp5_decoder;
2367
extern AVCodec vp6_decoder;
2368
extern AVCodec vp6f_decoder;
2369
extern AVCodec vqa_decoder;
2370
extern AVCodec wavpack_decoder;
2371
extern AVCodec wmav1_decoder;
2372
extern AVCodec wmav2_decoder;
2373
extern AVCodec wmv1_decoder;
2374
extern AVCodec wmv2_decoder;
2375
extern AVCodec wmv3_decoder;
2376
extern AVCodec wnv1_decoder;
2377
extern AVCodec ws_snd1_decoder;
2378
extern AVCodec xan_dpcm_decoder;
2379
extern AVCodec xan_wc3_decoder;
2380
extern AVCodec xl_decoder;
2381
extern AVCodec zlib_decoder;
2382
extern AVCodec zmbv_decoder;
2383

    
2384
/* PCM codecs */
2385
#define PCM_CODEC(id, name) \
2386
extern AVCodec name ## _decoder; \
2387
extern AVCodec name ## _encoder
2388

    
2389
PCM_CODEC(CODEC_ID_PCM_ALAW,    pcm_alaw);
2390
PCM_CODEC(CODEC_ID_PCM_MULAW,   pcm_mulaw);
2391
PCM_CODEC(CODEC_ID_PCM_S8,      pcm_s8);
2392
PCM_CODEC(CODEC_ID_PCM_S16BE,   pcm_s16be);
2393
PCM_CODEC(CODEC_ID_PCM_S16LE,   pcm_s16le);
2394
PCM_CODEC(CODEC_ID_PCM_S24BE,   pcm_s24be);
2395
PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2396
PCM_CODEC(CODEC_ID_PCM_S24LE,   pcm_s24le);
2397
PCM_CODEC(CODEC_ID_PCM_S32BE,   pcm_s32be);
2398
PCM_CODEC(CODEC_ID_PCM_S32LE,   pcm_s32le);
2399
PCM_CODEC(CODEC_ID_PCM_U8,      pcm_u8);
2400
PCM_CODEC(CODEC_ID_PCM_U16BE,   pcm_u16be);
2401
PCM_CODEC(CODEC_ID_PCM_U16LE,   pcm_u16le);
2402
PCM_CODEC(CODEC_ID_PCM_U24BE,   pcm_u24be);
2403
PCM_CODEC(CODEC_ID_PCM_U24LE,   pcm_u24le);
2404
PCM_CODEC(CODEC_ID_PCM_U32BE,   pcm_u32be);
2405
PCM_CODEC(CODEC_ID_PCM_U32LE,   pcm_u32le);
2406

    
2407
/* ADPCM codecs */
2408

    
2409
PCM_CODEC(CODEC_ID_ADPCM_4XM,     adpcm_4xm);
2410
PCM_CODEC(CODEC_ID_ADPCM_ADX,     adpcm_adx);
2411
PCM_CODEC(CODEC_ID_ADPCM_CT,      adpcm_ct);
2412
PCM_CODEC(CODEC_ID_ADPCM_EA,      adpcm_ea);
2413
PCM_CODEC(CODEC_ID_ADPCM_G726,    adpcm_g726);
2414
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2415
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2416
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT,  adpcm_ima_qt);
2417
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2418
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS,  adpcm_ima_ws);
2419
PCM_CODEC(CODEC_ID_ADPCM_MS,      adpcm_ms);
2420
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2421
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2422
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2423
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG,  adpcm_ima_smjpeg);
2424
PCM_CODEC(CODEC_ID_ADPCM_SWF,     adpcm_swf);
2425
PCM_CODEC(CODEC_ID_ADPCM_THP,     adpcm_thp);
2426
PCM_CODEC(CODEC_ID_ADPCM_XA,      adpcm_xa);
2427
PCM_CODEC(CODEC_ID_ADPCM_YAMAHA,  adpcm_yamaha);
2428

    
2429
#undef PCM_CODEC
2430

    
2431
/* dummy raw video codec */
2432
extern AVCodec rawvideo_decoder;
2433
extern AVCodec rawvideo_encoder;
2434

    
2435
/* the following codecs use external GPL libs */
2436
extern AVCodec dts_decoder;
2437
extern AVCodec liba52_decoder;
2438

    
2439
/* subtitles */
2440
extern AVCodec dvbsub_decoder;
2441
extern AVCodec dvbsub_encoder;
2442
extern AVCodec dvdsub_decoder;
2443
extern AVCodec dvdsub_encoder;
2444

    
2445
/* resample.c */
2446

    
2447
struct ReSampleContext;
2448
struct AVResampleContext;
2449

    
2450
typedef struct ReSampleContext ReSampleContext;
2451

    
2452
ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2453
                                     int output_rate, int input_rate);
2454
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2455
void audio_resample_close(ReSampleContext *s);
2456

    
2457
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2458
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2459
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2460
void av_resample_close(struct AVResampleContext *c);
2461

    
2462
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
2463
/* YUV420 format is assumed ! */
2464

    
2465
struct ImgReSampleContext attribute_deprecated;
2466

    
2467
typedef struct ImgReSampleContext ImgReSampleContext attribute_deprecated;
2468

    
2469
attribute_deprecated ImgReSampleContext *img_resample_init(int output_width, int output_height,
2470
                                      int input_width, int input_height);
2471

    
2472
attribute_deprecated ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2473
                                      int iwidth, int iheight,
2474
                                      int topBand, int bottomBand,
2475
                                      int leftBand, int rightBand,
2476
                                      int padtop, int padbottom,
2477
                                      int padleft, int padright);
2478

    
2479

    
2480
attribute_deprecated void img_resample(ImgReSampleContext *s,
2481
                  AVPicture *output, const AVPicture *input);
2482

    
2483
attribute_deprecated void img_resample_close(ImgReSampleContext *s);
2484

    
2485
#endif
2486

    
2487
/**
2488
 * Allocate memory for a picture.  Call avpicture_free to free it.
2489
 *
2490
 * @param picture the picture to be filled in
2491
 * @param pix_fmt the format of the picture
2492
 * @param width the width of the picture
2493
 * @param height the height of the picture
2494
 * @return zero if successful, a negative value if not
2495
 */
2496
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2497

    
2498
/**
2499
 * Free a picture previously allocated by avpicture_alloc().
2500
 *
2501
 * @param picture the AVPicture to be freed
2502
 */
2503
void avpicture_free(AVPicture *picture);
2504

    
2505
/**
2506
 * Fill in the AVPicture fields.
2507
 * The fields of the given AVPicture are filled in by using the 'ptr' address
2508
 * which points to the image data buffer. Depending on the specified picture
2509
 * format, one or multiple image data pointers and line sizes will be set.
2510
 * If a planar format is specified, several pointers will be set pointing to
2511
 * the different picture planes and the line sizes of the different planes
2512
 * will be stored in the lines_sizes array.
2513
 *
2514
 * @param picture AVPicture whose fields are to be filled in
2515
 * @param ptr Buffer which will contain or contains the actual image data
2516
 * @param pix_fmt The format in which the picture data is stored.
2517
 * @param width the width of the image in pixels
2518
 * @param height the height of the image in pixels
2519
 * @return size of the image data in bytes
2520
 */
2521
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2522
                   int pix_fmt, int width, int height);
2523
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2524
                     unsigned char *dest, int dest_size);
2525

    
2526
/**
2527
 * Calculate the size in bytes that a picture of the given width and height
2528
 * would occupy if stored in the given picture format.
2529
 *
2530
 * @param pix_fmt the given picture format
2531
 * @param width the width of the image
2532
 * @param height the height of the image
2533
 * @return Image data size in bytes
2534
 */
2535
int avpicture_get_size(int pix_fmt, int width, int height);
2536
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2537
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2538
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2539
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2540
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2541

    
2542
#define FF_LOSS_RESOLUTION  0x0001 /**< loss due to resolution change */
2543
#define FF_LOSS_DEPTH       0x0002 /**< loss due to color depth change */
2544
#define FF_LOSS_COLORSPACE  0x0004 /**< loss due to color space conversion */
2545
#define FF_LOSS_ALPHA       0x0008 /**< loss of alpha bits */
2546
#define FF_LOSS_COLORQUANT  0x0010 /**< loss due to color quantization */
2547
#define FF_LOSS_CHROMA      0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */
2548

    
2549
/**
2550
 * Computes what kind of losses will occur when converting from one specific
2551
 * pixel format to another.
2552
 * When converting from one pixel format to another, information loss may occur.
2553
 * For example, when converting from RGB24 to GRAY, the color information will
2554
 * be lost. Similarly, other losses occur when converting from some formats to
2555
 * other formats. These losses can involve loss of chroma, but also loss of
2556
 * resolution, loss of color depth, loss due to the color space conversion, loss
2557
 * of the alpha bits or loss due to color quantization.
2558
 * avcodec_get_fix_fmt_loss() informs you about the various types of losses
2559
 * which will occur when converting from one pixel format to another.
2560
 *
2561
 * @param[in] dst_pix_fmt destination pixel format
2562
 * @param[in] src_pix_fmt source pixel format
2563
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
2564
 * @return Combination of flags informing you what kind of losses will occur.
2565
 */
2566
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2567
                             int has_alpha);
2568

    
2569
/**
2570
 * Finds the best pixel format to convert to given a certain source pixel
2571
 * format.  When converting from one pixel format to another, information loss
2572
 * may occur.  For example, when converting from RGB24 to GRAY, the color
2573
 * information will be lost. Similarly, other losses occur when converting from
2574
 * some formats to other formats. avcodec_find_best_pix_fmt() searches which of
2575
 * the given pixel formats should be used to suffer the least amount of loss.
2576
 * The pixel formats from which it chooses one, are determined by the
2577
 * \p pix_fmt_mask parameter.
2578
 *
2579
 * @code
2580
 * src_pix_fmt = PIX_FMT_YUV420P;
2581
 * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24);
2582
 * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss);
2583
 * @endcode
2584
 *
2585
 * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from
2586
 * @param[in] src_pix_fmt source pixel format
2587
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
2588
 * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
2589
 * @return The best pixel format to convert to or -1 if none was found.
2590
 */
2591
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2592
                              int has_alpha, int *loss_ptr);
2593

    
2594
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2595
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2596

    
2597
/**
2598
 * Tell if an image really has transparent alpha values.
2599
 * @return ored mask of FF_ALPHA_xxx constants
2600
 */
2601
int img_get_alpha_info(const AVPicture *src,
2602
                       int pix_fmt, int width, int height);
2603

    
2604
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
2605
/* convert among pixel formats */
2606
attribute_deprecated int img_convert(AVPicture *dst, int dst_pix_fmt,
2607
                const AVPicture *src, int pix_fmt,
2608
                int width, int height);
2609
#endif
2610

    
2611
/* deinterlace a picture */
2612
/* deinterlace - if not supported return -1 */
2613
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2614
                          int pix_fmt, int width, int height);
2615

    
2616
/* external high level API */
2617

    
2618
extern AVCodec *first_avcodec;
2619

    
2620
/* returns LIBAVCODEC_VERSION_INT constant */
2621
unsigned avcodec_version(void);
2622
/* returns LIBAVCODEC_BUILD constant */
2623
unsigned avcodec_build(void);
2624

    
2625
/**
2626
 * Initializes libavcodec.
2627
 *
2628
 * @warning This function \e must be called before any other libavcodec
2629
 * function.
2630
 */
2631
void avcodec_init(void);
2632

    
2633
void register_avcodec(AVCodec *format);
2634

    
2635
/**
2636
 * Finds an encoder with a matching codec ID.
2637
 *
2638
 * @param id CodecID of the requested encoder
2639
 * @return An encoder if one was found, NULL otherwise.
2640
 */
2641
AVCodec *avcodec_find_encoder(enum CodecID id);
2642

    
2643
/**
2644
 * Finds an encoder with the specified name.
2645
 *
2646
 * @param name name of the requested encoder
2647
 * @return An encoder if one was found, NULL otherwise.
2648
 */
2649
AVCodec *avcodec_find_encoder_by_name(const char *name);
2650

    
2651
/**
2652
 * Finds a decoder with a matching codec ID.
2653
 *
2654
 * @param id CodecID of the requested decoder
2655
 * @return A decoder if one was found, NULL otherwise.
2656
 */
2657
AVCodec *avcodec_find_decoder(enum CodecID id);
2658

    
2659
/**
2660
 * Finds an decoder with the specified name.
2661
 *
2662
 * @param name name of the requested decoder
2663
 * @return A decoder if one was found, NULL otherwise.
2664
 */
2665
AVCodec *avcodec_find_decoder_by_name(const char *name);
2666
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2667

    
2668
/**
2669
 * Sets the fields of the given AVCodecContext to default values.
2670
 *
2671
 * @param s The AVCodecContext of which the fields should be set to default values.
2672
 */
2673
void avcodec_get_context_defaults(AVCodecContext *s);
2674

    
2675
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
2676
 *  we WILL change its arguments and name a few times! */
2677
void avcodec_get_context_defaults2(AVCodecContext *s, enum CodecType);
2678

    
2679
/**
2680
 * Allocates an AVCodecContext and sets its fields to default values.  The
2681
 * resulting struct can be deallocated by simply calling av_free().
2682
 *
2683
 * @return An AVCodecContext filled with default values or NULL on failure.
2684
 * @see avcodec_get_context_defaults
2685
 */
2686
AVCodecContext *avcodec_alloc_context(void);
2687

    
2688
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
2689
 *  we WILL change its arguments and name a few times! */
2690
AVCodecContext *avcodec_alloc_context2(enum CodecType);
2691

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

    
2699
/**
2700
 * Allocates an AVFrame and sets its fields to default values.  The resulting
2701
 * struct can be deallocated by simply calling av_free().
2702
 *
2703
 * @return An AVFrame filled with default values or NULL on failure.
2704
 * @see avcodec_get_frame_defaults
2705
 */
2706
AVFrame *avcodec_alloc_frame(void);
2707

    
2708
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2709
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2710
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2711
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2712

    
2713
/**
2714
 * Checks if the given dimension of a picture is valid, meaning that all
2715
 * bytes of the picture can be addressed with a signed int.
2716
 *
2717
 * @param[in] w Width of the picture.
2718
 * @param[in] h Height of the picture.
2719
 * @return Zero if valid, a negative value if invalid.
2720
 */
2721
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2722
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2723

    
2724
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2725
void avcodec_thread_free(AVCodecContext *s);
2726
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2727
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2728
//FIXME func typedef
2729

    
2730
/**
2731
 * Initializes the AVCodecContext to use the given AVCodec. Prior to using this
2732
 * function the context has to be allocated.
2733
 *
2734
 * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
2735
 * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
2736
 * retrieving a codec.
2737
 *
2738
 * @warning This function is not thread safe!
2739
 *
2740
 * @code
2741
 * codec = avcodec_find_decoder(CODEC_ID_H264);
2742
 * if (!codec)
2743
 *     exit(1);
2744
 *
2745
 * context = avcodec_alloc_context();
2746
 *
2747
 * if (avcodec_open(context, codec) < 0)
2748
 *     exit(1);
2749
 * @endcode
2750
 *
2751
 * @param avctx The context which will be set up to use the given codec.
2752
 * @param codec The codec to use within the context.
2753
 * @return zero on success, a negative value on error
2754
 * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder
2755
 */
2756
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2757

    
2758
/**
2759
 * @deprecated Use avcodec_decode_audio2() instead.
2760
 */
2761
attribute_deprecated int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2762
                         int *frame_size_ptr,
2763
                         uint8_t *buf, int buf_size);
2764

    
2765
/**
2766
 * Decodes an audio frame from \p buf into \p samples.
2767
 * The avcodec_decode_audio2() function decodes an audio frame from the input
2768
 * buffer \p buf of size \p buf_size. To decode it, it makes use of the
2769
 * audio codec which was coupled with \p avctx using avcodec_open(). The
2770
 * resulting decoded frame is stored in output buffer \p samples.  If no frame
2771
 * could be decompressed, \p frame_size_ptr is zero. Otherwise, it is the
2772
 * decompressed frame size in \e bytes.
2773
 *
2774
 * @warning You \e must set \p frame_size_ptr to the allocated size of the
2775
 * output buffer before calling avcodec_decode_audio2().
2776
 *
2777
 * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
2778
 * the actual read bytes because some optimized bitstream readers read 32 or 64
2779
 * bits at once and could read over the end.
2780
 *
2781
 * @warning The end of the input buffer \p buf should be set to 0 to ensure that
2782
 * no overreading happens for damaged MPEG streams.
2783
 *
2784
 * @note You might have to align the input buffer \p buf and output buffer \p
2785
 * samples. The alignment requirements depend on the CPU: On some CPUs it isn't
2786
 * necessary at all, on others it won't work at all if not aligned and on others
2787
 * it will work but it will have an impact on performance. In practice, the
2788
 * bitstream should have 4 byte alignment at minimum and all sample data should
2789
 * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
2790
 * the linesize is not a multiple of 16 then there's no sense in aligning the
2791
 * start of the buffer to 16.
2792
 *
2793
 * @param avctx the codec context
2794
 * @param[out] samples the output buffer
2795
 * @param[in,out] frame_size_ptr the output buffer size in bytes
2796
 * @param[in] buf the input buffer
2797
 * @param[in] buf_size the input buffer size in bytes
2798
 * @return On error a negative value is returned, otherwise the number of bytes
2799
 * used or zero if no frame could be decompressed.
2800
 */
2801
int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
2802
                         int *frame_size_ptr,
2803
                         uint8_t *buf, int buf_size);
2804

    
2805
/**
2806
 * Decodes a video frame from \p buf into \p picture.
2807
 * The avcodec_decode_video() function decodes a video frame from the input
2808
 * buffer \p buf of size \p buf_size. To decode it, it makes use of the
2809
 * video codec which was coupled with \p avctx using avcodec_open(). The
2810
 * resulting decoded frame is stored in \p picture.
2811
 *
2812
 * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
2813
 * the actual read bytes because some optimized bitstream readers read 32 or 64
2814
 * bits at once and could read over the end.
2815
 *
2816
 * @warning The end of the input buffer \p buf should be set to 0 to ensure that
2817
 * no overreading happens for damaged MPEG streams.
2818
 *
2819
 * @note You might have to align the input buffer \p buf and output buffer \p
2820
 * samples. The alignment requirements depend on the CPU: on some CPUs it isn't
2821
 * necessary at all, on others it won't work at all if not aligned and on others
2822
 * it will work but it will have an impact on performance. In practice, the
2823
 * bitstream should have 4 byte alignment at minimum and all sample data should
2824
 * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
2825
 * the linesize is not a multiple of 16 then there's no sense in aligning the
2826
 * start of the buffer to 16.
2827
 *
2828
 * @param avctx the codec context
2829
 * @param[out] picture The AVFrame in which the decoded video frame will be stored.
2830
 * @param[in] buf the input buffer
2831
 * @param[in] buf_size the size of the input buffer in bytes
2832
 * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
2833
 * @return On error a negative value is returned, otherwise the number of bytes
2834
 * used or zero if no frame could be decompressed.
2835
 */
2836
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2837
                         int *got_picture_ptr,
2838
                         uint8_t *buf, int buf_size);
2839

    
2840
/* Decode a subtitle message. Return -1 if error, otherwise return the
2841
 * number of bytes used. If no subtitle could be decompressed,
2842
 * got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
2843
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2844
                            int *got_sub_ptr,
2845
                            const uint8_t *buf, int buf_size);
2846
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2847
                        int *data_size_ptr,
2848
                        uint8_t *buf, int buf_size);
2849

    
2850
/**
2851
 * Encodes an audio frame from \p samples into \p buf.
2852
 * The avcodec_encode_audio() function encodes an audio frame from the input
2853
 * buffer \p samples. To encode it, it makes use of the audio codec which was
2854
 * coupled with \p avctx using avcodec_open(). The resulting encoded frame is
2855
 * stored in output buffer \p buf.
2856
 *
2857
 * @note The output buffer should be at least \c FF_MIN_BUFFER_SIZE bytes large.
2858
 *
2859
 * @param avctx the codec context
2860
 * @param[out] buf the output buffer
2861
 * @param[in] buf_size the output buffer size
2862
 * @param[in] samples the input buffer containing the samples
2863
 * @return On error a negative value is returned, on succes zero or the number
2864
 * of bytes used from the input buffer.
2865
 */
2866
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2867
                         const short *samples);
2868

    
2869
/**
2870
 * Encodes a video frame from \p pict into \p buf.
2871
 * The avcodec_encode_video() function encodes a video frame from the input
2872
 * \p pict. To encode it, it makes use of the video codec which was coupled with
2873
 * \p avctx using avcodec_open(). The resulting encoded bytes representing the
2874
 * frame are stored in the output buffer \p buf. The input picture should be
2875
 * stored using a specific format, namely \c avctx.pix_fmt.
2876
 *
2877
 * @param avctx the codec context
2878
 * @param[out] buf the output buffer for the bitstream of encoded frame
2879
 * @param[in] buf_size the size of the output buffer in bytes
2880
 * @param[in] pict the input picture to encode
2881
 * @return On error a negative value is returned, on success zero or the number
2882
 * of bytes used from the input buffer.
2883
 */
2884
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2885
                         const AVFrame *pict);
2886
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2887
                            const AVSubtitle *sub);
2888

    
2889
int avcodec_close(AVCodecContext *avctx);
2890

    
2891
void avcodec_register_all(void);
2892

    
2893
/**
2894
 * Flush buffers, should be called when seeking or when switching to a different stream.
2895
 */
2896
void avcodec_flush_buffers(AVCodecContext *avctx);
2897

    
2898
void avcodec_default_free_buffers(AVCodecContext *s);
2899

    
2900
/* misc useful functions */
2901

    
2902
/**
2903
 * Returns a single letter to describe the given picture type \p pict_type.
2904
 *
2905
 * @param[in] pict_type the picture type
2906
 * @return A single character representing the picture type.
2907
 */
2908
char av_get_pict_type_char(int pict_type);
2909

    
2910
/**
2911
 * Returns codec bits per sample.
2912
 *
2913
 * @param[in] codec_id the codec
2914
 * @return Number of bits per sample or zero if unknown for the given codec.
2915
 */
2916
int av_get_bits_per_sample(enum CodecID codec_id);
2917

    
2918
/* frame parsing */
2919
typedef struct AVCodecParserContext {
2920
    void *priv_data;
2921
    struct AVCodecParser *parser;
2922
    int64_t frame_offset; /* offset of the current frame */
2923
    int64_t cur_offset; /* current offset
2924
                           (incremented by each av_parser_parse()) */
2925
    int64_t last_frame_offset; /* offset of the last frame */
2926
    /* video info */
2927
    int pict_type; /* XXX: Put it back in AVCodecContext. */
2928
    int repeat_pict; /* XXX: Put it back in AVCodecContext. */
2929
    int64_t pts;     /* pts of the current frame */
2930
    int64_t dts;     /* dts of the current frame */
2931

    
2932
    /* private data */
2933
    int64_t last_pts;
2934
    int64_t last_dts;
2935
    int fetch_timestamp;
2936

    
2937
#define AV_PARSER_PTS_NB 4
2938
    int cur_frame_start_index;
2939
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2940
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2941
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2942

    
2943
    int flags;
2944
#define PARSER_FLAG_COMPLETE_FRAMES           0x0001
2945

    
2946
    int64_t offset;      ///< byte offset from starting packet start
2947
    int64_t last_offset;
2948
} AVCodecParserContext;
2949

    
2950
typedef struct AVCodecParser {
2951
    int codec_ids[5]; /* several codec IDs are permitted */
2952
    int priv_data_size;
2953
    int (*parser_init)(AVCodecParserContext *s);
2954
    int (*parser_parse)(AVCodecParserContext *s,
2955
                        AVCodecContext *avctx,
2956
                        uint8_t **poutbuf, int *poutbuf_size,
2957
                        const uint8_t *buf, int buf_size);
2958
    void (*parser_close)(AVCodecParserContext *s);
2959
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2960
    struct AVCodecParser *next;
2961
} AVCodecParser;
2962

    
2963
extern AVCodecParser *av_first_parser;
2964

    
2965
void av_register_codec_parser(AVCodecParser *parser);
2966
AVCodecParserContext *av_parser_init(int codec_id);
2967
int av_parser_parse(AVCodecParserContext *s,
2968
                    AVCodecContext *avctx,
2969
                    uint8_t **poutbuf, int *poutbuf_size,
2970
                    const uint8_t *buf, int buf_size,
2971
                    int64_t pts, int64_t dts);
2972
int av_parser_change(AVCodecParserContext *s,
2973
                     AVCodecContext *avctx,
2974
                     uint8_t **poutbuf, int *poutbuf_size,
2975
                     const uint8_t *buf, int buf_size, int keyframe);
2976
void av_parser_close(AVCodecParserContext *s);
2977

    
2978
extern AVCodecParser aac_parser;
2979
extern AVCodecParser ac3_parser;
2980
extern AVCodecParser cavsvideo_parser;
2981
extern AVCodecParser dca_parser;
2982
extern AVCodecParser dvbsub_parser;
2983
extern AVCodecParser dvdsub_parser;
2984
extern AVCodecParser h261_parser;
2985
extern AVCodecParser h263_parser;
2986
extern AVCodecParser h264_parser;
2987
extern AVCodecParser mjpeg_parser;
2988
extern AVCodecParser mpeg4video_parser;
2989
extern AVCodecParser mpegaudio_parser;
2990
extern AVCodecParser mpegvideo_parser;
2991
extern AVCodecParser pnm_parser;
2992
extern AVCodecParser vc1_parser;
2993

    
2994

    
2995
typedef struct AVBitStreamFilterContext {
2996
    void *priv_data;
2997
    struct AVBitStreamFilter *filter;
2998
    AVCodecParserContext *parser;
2999
    struct AVBitStreamFilterContext *next;
3000
} AVBitStreamFilterContext;
3001

    
3002

    
3003
typedef struct AVBitStreamFilter {
3004
    const char *name;
3005
    int priv_data_size;
3006
    int (*filter)(AVBitStreamFilterContext *bsfc,
3007
                  AVCodecContext *avctx, const char *args,
3008
                  uint8_t **poutbuf, int *poutbuf_size,
3009
                  const uint8_t *buf, int buf_size, int keyframe);
3010
    struct AVBitStreamFilter *next;
3011
} AVBitStreamFilter;
3012

    
3013
extern AVBitStreamFilter *av_first_bitstream_filter;
3014

    
3015
void av_register_bitstream_filter(AVBitStreamFilter *bsf);
3016
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
3017
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
3018
                               AVCodecContext *avctx, const char *args,
3019
                               uint8_t **poutbuf, int *poutbuf_size,
3020
                               const uint8_t *buf, int buf_size, int keyframe);
3021
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
3022

    
3023
extern AVBitStreamFilter dump_extradata_bsf;
3024
extern AVBitStreamFilter remove_extradata_bsf;
3025
extern AVBitStreamFilter noise_bsf;
3026
extern AVBitStreamFilter mp3_header_compress_bsf;
3027
extern AVBitStreamFilter mp3_header_decompress_bsf;
3028
extern AVBitStreamFilter mjpega_dump_header_bsf;
3029
extern AVBitStreamFilter imx_dump_header_bsf;
3030

    
3031

    
3032
/* memory */
3033

    
3034
/**
3035
 * Reallocates the given block if it is not large enough, otherwise it
3036
 * does nothing.
3037
 *
3038
 * @see av_realloc
3039
 */
3040
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
3041

    
3042
/* for static data only */
3043

    
3044
/**
3045
 * Frees all static arrays and resets their pointers to 0.
3046
 * Call this function to release all statically allocated tables.
3047
 */
3048
attribute_deprecated void av_free_static(void);
3049

    
3050
/**
3051
 * Allocation of static arrays.
3052
 *
3053
 * @warning Do not use for normal allocation.
3054
 *
3055
 * @param[in] size The amount of memory you need in bytes.
3056
 * @return block of memory of the requested size
3057
 */
3058
attribute_deprecated void *av_mallocz_static(unsigned int size);
3059

    
3060
/**
3061
 * Copy image 'src' to 'dst'.
3062
 */
3063
void av_picture_copy(AVPicture *dst, const AVPicture *src,
3064
              int pix_fmt, int width, int height);
3065

    
3066
/**
3067
 * Crop image top and left side.
3068
 */
3069
int av_picture_crop(AVPicture *dst, const AVPicture *src,
3070
             int pix_fmt, int top_band, int left_band);
3071

    
3072
/**
3073
 * Pad image.
3074
 */
3075
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
3076
            int padtop, int padbottom, int padleft, int padright, int *color);
3077

    
3078
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
3079
attribute_deprecated void img_copy(AVPicture *dst, const AVPicture *src,
3080
              int pix_fmt, int width, int height);
3081

    
3082
attribute_deprecated int img_crop(AVPicture *dst, const AVPicture *src,
3083
             int pix_fmt, int top_band, int left_band);
3084

    
3085
attribute_deprecated int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
3086
            int padtop, int padbottom, int padleft, int padright, int *color);
3087
#endif
3088

    
3089
extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
3090

    
3091
/* error handling */
3092
#if EINVAL > 0
3093
#define AVERROR(e) (-(e)) /**< Returns a negative error code from a POSIX error code, to return from library functions. */
3094
#define AVUNERROR(e) (-(e)) /**< Returns a POSIX error code from a library function error return value. */
3095
#else
3096
/* Some platforms have E* and errno already negated. */
3097
#define AVERROR(e) (e)
3098
#define AVUNERROR(e) (e)
3099
#endif
3100
#define AVERROR_UNKNOWN     AVERROR(EINVAL)  /**< unknown error */
3101
#define AVERROR_IO          AVERROR(EIO)     /**< I/O error */
3102
#define AVERROR_NUMEXPECTED AVERROR(EDOM)    /**< Number syntax expected in filename. */
3103
#define AVERROR_INVALIDDATA AVERROR(EINVAL)  /**< invalid data found */
3104
#define AVERROR_NOMEM       AVERROR(ENOMEM)  /**< not enough memory */
3105
#define AVERROR_NOFMT       AVERROR(EILSEQ)  /**< unknown format */
3106
#define AVERROR_NOTSUPP     AVERROR(ENOSYS)  /**< Operation not supported. */
3107

    
3108
#ifdef __cplusplus
3109
}
3110
#endif
3111

    
3112
#endif /* AVCODEC_H */