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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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    /* 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 */
410
/* codec capabilities */
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412
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< Decoder can use draw_horiz_band callback.
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/**
414
 * Codec uses get_buffer() for allocating buffers.
415
 * direct rendering method 1
416
 */
417
#define CODEC_CAP_DR1             0x0002
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/* If 'parse_only' field is true, then avcodec_parse_frame() can be used. */
419
#define CODEC_CAP_PARSE_ONLY      0x0004
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#define CODEC_CAP_TRUNCATED       0x0008
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/* Codec can export data for HW decoding (XvMC). */
422
#define CODEC_CAP_HWACCEL         0x0010
423
/**
424
 * Codec has a nonzero delay and needs to be fed with NULL at the end to get the delayed data.
425
 * If this is not set, the codec is guaranteed to never be fed with NULL data.
426
 */
427
#define CODEC_CAP_DELAY           0x0020
428
/**
429
 * Codec can be fed a final frame with a smaller size.
430
 * This can be used to prevent truncation of the last audio samples.
431
 */
432
#define CODEC_CAP_SMALL_LAST_FRAME 0x0040
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434
//The following defines may change, don't expect compatibility if you use them.
435
#define MB_TYPE_INTRA4x4   0x0001
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#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific
437
#define MB_TYPE_INTRA_PCM  0x0004 //FIXME H.264-specific
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#define MB_TYPE_16x16      0x0008
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#define MB_TYPE_16x8       0x0010
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#define MB_TYPE_8x16       0x0020
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#define MB_TYPE_8x8        0x0040
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#define MB_TYPE_INTERLACED 0x0080
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#define MB_TYPE_DIRECT2     0x0100 //FIXME
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#define MB_TYPE_ACPRED     0x0200
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#define MB_TYPE_GMC        0x0400
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#define MB_TYPE_SKIP       0x0800
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#define MB_TYPE_P0L0       0x1000
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#define MB_TYPE_P1L0       0x2000
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#define MB_TYPE_P0L1       0x4000
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#define MB_TYPE_P1L1       0x8000
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#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
452
#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
453
#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
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#define MB_TYPE_QUANT      0x00010000
455
#define MB_TYPE_CBP        0x00020000
456
//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
457

    
458
/**
459
 * Pan Scan area.
460
 * This specifies the area which should be displayed.
461
 * Note there may be multiple such areas for one frame.
462
 */
463
typedef struct AVPanScan{
464
    /**
465
     * id
466
     * - encoding: Set by user.
467
     * - decoding: Set by libavcodec.
468
     */
469
    int id;
470

    
471
    /**
472
     * width and height in 1/16 pel
473
     * - encoding: Set by user.
474
     * - decoding: Set by libavcodec.
475
     */
476
    int width;
477
    int height;
478

    
479
    /**
480
     * position of the top left corner in 1/16 pel for up to 3 fields/frames
481
     * - encoding: Set by user.
482
     * - decoding: Set by libavcodec.
483
     */
484
    int16_t position[3][2];
485
}AVPanScan;
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487
#define FF_COMMON_FRAME \
488
    /**\
489
     * pointer to the picture planes.\
490
     * This might be different from the first allocated byte\
491
     * - encoding: \
492
     * - decoding: \
493
     */\
494
    uint8_t *data[4];\
495
    int linesize[4];\
496
    /**\
497
     * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.\
498
     * This isn't used by libavcodec unless the default get/release_buffer() is used.\
499
     * - encoding: \
500
     * - decoding: \
501
     */\
502
    uint8_t *base[4];\
503
    /**\
504
     * 1 -> keyframe, 0-> not\
505
     * - encoding: Set by libavcodec.\
506
     * - decoding: Set by libavcodec.\
507
     */\
508
    int key_frame;\
509
\
510
    /**\
511
     * Picture type of the frame, see ?_TYPE below.\
512
     * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
513
     * - decoding: Set by libavcodec.\
514
     */\
515
    int pict_type;\
516
\
517
    /**\
518
     * presentation timestamp in time_base units (time when frame should be shown to user)\
519
     * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.\
520
     * - encoding: MUST be set by user.\
521
     * - decoding: Set by libavcodec.\
522
     */\
523
    int64_t pts;\
524
\
525
    /**\
526
     * picture number in bitstream order\
527
     * - encoding: set by\
528
     * - decoding: Set by libavcodec.\
529
     */\
530
    int coded_picture_number;\
531
    /**\
532
     * picture number in display order\
533
     * - encoding: set by\
534
     * - decoding: Set by libavcodec.\
535
     */\
536
    int display_picture_number;\
537
\
538
    /**\
539
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
540
     * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
541
     * - decoding: Set by libavcodec.\
542
     */\
543
    int quality; \
544
\
545
    /**\
546
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
547
     * Set to INT_MAX if the buffer has not been used yet.\
548
     * - encoding: unused\
549
     * - decoding: MUST be set by get_buffer().\
550
     */\
551
    int age;\
552
\
553
    /**\
554
     * is this picture used as reference\
555
     * - encoding: unused\
556
     * - decoding: Set by libavcodec. (before get_buffer() call)).\
557
     */\
558
    int reference;\
559
\
560
    /**\
561
     * QP table\
562
     * - encoding: unused\
563
     * - decoding: Set by libavcodec.\
564
     */\
565
    int8_t *qscale_table;\
566
    /**\
567
     * QP store stride\
568
     * - encoding: unused\
569
     * - decoding: Set by libavcodec.\
570
     */\
571
    int qstride;\
572
\
573
    /**\
574
     * mbskip_table[mb]>=1 if MB didn't change\
575
     * stride= mb_width = (width+15)>>4\
576
     * - encoding: unused\
577
     * - decoding: Set by libavcodec.\
578
     */\
579
    uint8_t *mbskip_table;\
580
\
581
    /**\
582
     * motion vector table\
583
     * @code\
584
     * example:\
585
     * int mv_sample_log2= 4 - motion_subsample_log2;\
586
     * int mb_width= (width+15)>>4;\
587
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
588
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
589
     * @endcode\
590
     * - encoding: Set by user.\
591
     * - decoding: Set by libavcodec.\
592
     */\
593
    int16_t (*motion_val[2])[2];\
594
\
595
    /**\
596
     * macroblock type table\
597
     * mb_type_base + mb_width + 2\
598
     * - encoding: Set by user.\
599
     * - decoding: Set by libavcodec.\
600
     */\
601
    uint32_t *mb_type;\
602
\
603
    /**\
604
     * log2 of the size of the block which a single vector in motion_val represents: \
605
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
606
     * - encoding: unused\
607
     * - decoding: Set by libavcodec.\
608
     */\
609
    uint8_t motion_subsample_log2;\
610
\
611
    /**\
612
     * for some private data of the user\
613
     * - encoding: unused\
614
     * - decoding: Set by user.\
615
     */\
616
    void *opaque;\
617
\
618
    /**\
619
     * error\
620
     * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.\
621
     * - decoding: unused\
622
     */\
623
    uint64_t error[4];\
624
\
625
    /**\
626
     * type of the buffer (to keep track of who has to deallocate data[*])\
627
     * - encoding: Set by the one who allocates it.\
628
     * - decoding: Set by the one who allocates it.\
629
     * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.\
630
     */\
631
    int type;\
632
    \
633
    /**\
634
     * When decoding, this signals how much the picture must be delayed.\
635
     * extra_delay = repeat_pict / (2*fps)\
636
     * - encoding: unused\
637
     * - decoding: Set by libavcodec.\
638
     */\
639
    int repeat_pict;\
640
    \
641
    /**\
642
     * \
643
     */\
644
    int qscale_type;\
645
    \
646
    /**\
647
     * The content of the picture is interlaced.\
648
     * - encoding: Set by user.\
649
     * - decoding: Set by libavcodec. (default 0)\
650
     */\
651
    int interlaced_frame;\
652
    \
653
    /**\
654
     * If the content is interlaced, is top field displayed first.\
655
     * - encoding: Set by user.\
656
     * - decoding: Set by libavcodec.\
657
     */\
658
    int top_field_first;\
659
    \
660
    /**\
661
     * Pan scan.\
662
     * - encoding: Set by user.\
663
     * - decoding: Set by libavcodec.\
664
     */\
665
    AVPanScan *pan_scan;\
666
    \
667
    /**\
668
     * Tell user application that palette has changed from previous frame.\
669
     * - encoding: ??? (no palette-enabled encoder yet)\
670
     * - decoding: Set by libavcodec. (default 0).\
671
     */\
672
    int palette_has_changed;\
673
    \
674
    /**\
675
     * codec suggestion on buffer type if != 0\
676
     * - encoding: unused\
677
     * - decoding: Set by libavcodec. (before get_buffer() call)).\
678
     */\
679
    int buffer_hints;\
680
\
681
    /**\
682
     * DCT coefficients\
683
     * - encoding: unused\
684
     * - decoding: Set by libavcodec.\
685
     */\
686
    short *dct_coeff;\
687
\
688
    /**\
689
     * motion referece frame index\
690
     * - encoding: Set by user.\
691
     * - decoding: Set by libavcodec.\
692
     */\
693
    int8_t *ref_index[2];
694

    
695
#define FF_QSCALE_TYPE_MPEG1 0
696
#define FF_QSCALE_TYPE_MPEG2 1
697
#define FF_QSCALE_TYPE_H264  2
698

    
699
#define FF_BUFFER_TYPE_INTERNAL 1
700
#define FF_BUFFER_TYPE_USER     2 ///< direct rendering buffers (image is (de)allocated by user)
701
#define FF_BUFFER_TYPE_SHARED   4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared.
702
#define FF_BUFFER_TYPE_COPY     8 ///< Just a (modified) copy of some other buffer, don't deallocate anything.
703

    
704

    
705
#define FF_I_TYPE 1 // Intra
706
#define FF_P_TYPE 2 // Predicted
707
#define FF_B_TYPE 3 // Bi-dir predicted
708
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
709
#define FF_SI_TYPE 5
710
#define FF_SP_TYPE 6
711

    
712
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore).
713
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer.
714
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content.
715
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update).
716

    
717
/**
718
 * Audio Video Frame.
719
 */
720
typedef struct AVFrame {
721
    FF_COMMON_FRAME
722
} AVFrame;
723

    
724
#define DEFAULT_FRAME_RATE_BASE 1001000
725

    
726
/**
727
 * main external API structure
728
 */
729
typedef struct AVCodecContext {
730
    /**
731
     * information on struct for av_log
732
     * - set by avcodec_alloc_context
733
     */
734
    AVClass *av_class;
735
    /**
736
     * the average bitrate
737
     * - encoding: Set by user; unused for constant quantizer encoding.
738
     * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
739
     */
740
    int bit_rate;
741

    
742
    /**
743
     * number of bits the bitstream is allowed to diverge from the reference.
744
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
745
     * - encoding: Set by user; unused for constant quantizer encoding.
746
     * - decoding: unused
747
     */
748
    int bit_rate_tolerance;
749

    
750
    /**
751
     * CODEC_FLAG_*.
752
     * - encoding: Set by user.
753
     * - decoding: Set by user.
754
     */
755
    int flags;
756

    
757
    /**
758
     * Some codecs need additional format info. It is stored here.
759
     * If any muxer uses this then ALL demuxers/parsers AND encoders for the
760
     * specific codec MUST set it correctly otherwise stream copy breaks.
761
     * In general use of this field by muxers is not recommanded.
762
     * - encoding: Set by libavcodec.
763
     * - decoding: Set by libavcodec. (FIXME: Is this OK?)
764
     */
765
    int sub_id;
766

    
767
    /**
768
     * Motion estimation algorithm used for video coding.
769
     * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
770
     * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
771
     * - encoding: MUST be set by user.
772
     * - decoding: unused
773
     */
774
    int me_method;
775

    
776
    /**
777
     * some codecs need / can use extradata like Huffman tables.
778
     * mjpeg: Huffman tables
779
     * rv10: additional flags
780
     * mpeg4: global headers (they can be in the bitstream or here)
781
     * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
782
     * than extradata_size to avoid prolems if it is read with the bitstream reader.
783
     * The bytewise contents of extradata must not depend on the architecture or CPU endianness.
784
     * - encoding: Set/allocated/freed by libavcodec.
785
     * - decoding: Set/allocated/freed by user.
786
     */
787
    uint8_t *extradata;
788
    int extradata_size;
789

    
790
    /**
791
     * This is the fundamental unit of time (in seconds) in terms
792
     * of which frame timestamps are represented. For fixed-fps content,
793
     * timebase should be 1/framerate and timestamp increments should be
794
     * identically 1.
795
     * - encoding: MUST be set by user.
796
     * - decoding: Set by libavcodec.
797
     */
798
    AVRational time_base;
799

    
800
    /* video only */
801
    /**
802
     * picture width / height.
803
     * - encoding: MUST be set by user.
804
     * - decoding: Set by libavcodec.
805
     * Note: For compatibility it is possible to set this instead of
806
     * coded_width/height before decoding.
807
     */
808
    int width, height;
809

    
810
#define FF_ASPECT_EXTENDED 15
811

    
812
    /**
813
     * the number of pictures in a group of pictures, or 0 for intra_only
814
     * - encoding: Set by user.
815
     * - decoding: unused
816
     */
817
    int gop_size;
818

    
819
    /**
820
     * Pixel format, see PIX_FMT_xxx.
821
     * - encoding: Set by user.
822
     * - decoding: Set by libavcodec.
823
     */
824
    enum PixelFormat pix_fmt;
825

    
826
    /**
827
     * Frame rate emulation. If not zero, the lower layer (i.e. format handler)
828
     * has to read frames at native frame rate.
829
     * - encoding: Set by user.
830
     * - decoding: unused
831
     */
832
    int rate_emu;
833

    
834
    /**
835
     * If non NULL, 'draw_horiz_band' is called by the libavcodec
836
     * decoder to draw a horizontal band. It improves cache usage. Not
837
     * all codecs can do that. You must check the codec capabilities
838
     * beforehand.
839
     * - encoding: unused
840
     * - decoding: Set by user.
841
     * @param height the height of the slice
842
     * @param y the y position of the slice
843
     * @param type 1->top field, 2->bottom field, 3->frame
844
     * @param offset offset into the AVFrame.data from which the slice should be read
845
     */
846
    void (*draw_horiz_band)(struct AVCodecContext *s,
847
                            const AVFrame *src, int offset[4],
848
                            int y, int type, int height);
849

    
850
    /* audio only */
851
    int sample_rate; ///< samples per second
852
    int channels;
853

    
854
    /**
855
     * audio sample format
856
     * - encoding: Set by user.
857
     * - decoding: Set by libavcodec.
858
     */
859
    enum SampleFormat sample_fmt;  ///< sample format, currently unused
860

    
861
    /* The following data should not be initialized. */
862
    /**
863
     * Samples per packet, initialized when calling 'init'.
864
     */
865
    int frame_size;
866
    int frame_number;   ///< audio or video frame number
867
    int real_pict_num;  ///< Returns the real picture number of previous encoded frame.
868

    
869
    /**
870
     * Number of frames the decoded output will be delayed relative to
871
     * the encoded input.
872
     * - encoding: Set by libavcodec.
873
     * - decoding: unused
874
     */
875
    int delay;
876

    
877
    /* - encoding parameters */
878
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
879
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
880

    
881
    /**
882
     * minimum quantizer
883
     * - encoding: Set by user.
884
     * - decoding: unused
885
     */
886
    int qmin;
887

    
888
    /**
889
     * maximum quantizer
890
     * - encoding: Set by user.
891
     * - decoding: unused
892
     */
893
    int qmax;
894

    
895
    /**
896
     * maximum quantizer difference between frames
897
     * - encoding: Set by user.
898
     * - decoding: unused
899
     */
900
    int max_qdiff;
901

    
902
    /**
903
     * maximum number of B-frames between non-B-frames
904
     * Note: The output will be delayed by max_b_frames+1 relative to the input.
905
     * - encoding: Set by user.
906
     * - decoding: unused
907
     */
908
    int max_b_frames;
909

    
910
    /**
911
     * qscale factor between IP and B-frames
912
     * - encoding: Set by user.
913
     * - decoding: unused
914
     */
915
    float b_quant_factor;
916

    
917
    /** obsolete FIXME remove */
918
    int rc_strategy;
919
#define FF_RC_STRATEGY_XVID 1
920

    
921
    int b_frame_strategy;
922

    
923
    /**
924
     * hurry up amount
925
     * - encoding: unused
926
     * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header
927
     * @deprecated Deprecated in favor of skip_idct and skip_frame.
928
     */
929
    int hurry_up;
930

    
931
    struct AVCodec *codec;
932

    
933
    void *priv_data;
934

    
935
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
936
    /* unused, FIXME remove*/
937
    int rtp_mode;
938
#endif
939

    
940
    int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
941
                            /* do its best to deliver a chunk with size     */
942
                            /* below rtp_payload_size, the chunk will start */
943
                            /* with a start code on some codecs like H.263. */
944
                            /* This doesn't take account of any particular  */
945
                            /* headers inside the transmitted RTP payload.  */
946

    
947

    
948
    /* The RTP callback: This function is called    */
949
    /* every time the encoder has a packet to send. */
950
    /* It depends on the encoder if the data starts */
951
    /* with a Start Code (it should). H.263 does.   */
952
    /* mb_nb contains the number of macroblocks     */
953
    /* encoded in the RTP payload.                  */
954
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
955

    
956
    /* statistics, used for 2-pass encoding */
957
    int mv_bits;
958
    int header_bits;
959
    int i_tex_bits;
960
    int p_tex_bits;
961
    int i_count;
962
    int p_count;
963
    int skip_count;
964
    int misc_bits;
965

    
966
    /**
967
     * number of bits used for the previously encoded frame
968
     * - encoding: Set by libavcodec.
969
     * - decoding: unused
970
     */
971
    int frame_bits;
972

    
973
    /**
974
     * Private data of the user, can be used to carry app specific stuff.
975
     * - encoding: Set by user.
976
     * - decoding: Set by user.
977
     */
978
    void *opaque;
979

    
980
    char codec_name[32];
981
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
982
    enum CodecID codec_id; /* see CODEC_ID_xxx */
983

    
984
    /**
985
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
986
     * This is used to work around some encoder bugs.
987
     * A demuxer should set this to what is stored in the field used to identify the codec.
988
     * If there are multiple such fields in a container then the demuxer should choose the one
989
     * which maximizes the information about the used codec.
990
     * If the codec tag field in a container is larger then 32 bits then the demuxer should
991
     * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
992
     * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
993
     * first.
994
     * - encoding: Set by user, if not then the default based on codec_id will be used.
995
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
996
     */
997
    unsigned int codec_tag;
998

    
999
    /**
1000
     * Work around bugs in encoders which sometimes cannot be detected automatically.
1001
     * - encoding: Set by user
1002
     * - decoding: Set by user
1003
     */
1004
    int workaround_bugs;
1005
#define FF_BUG_AUTODETECT       1  ///< autodetection
1006
#define FF_BUG_OLD_MSMPEG4      2
1007
#define FF_BUG_XVID_ILACE       4
1008
#define FF_BUG_UMP4             8
1009
#define FF_BUG_NO_PADDING       16
1010
#define FF_BUG_AMV              32
1011
#define FF_BUG_AC_VLC           0  ///< Will be removed, libavcodec can now handle these non-compliant files by default.
1012
#define FF_BUG_QPEL_CHROMA      64
1013
#define FF_BUG_STD_QPEL         128
1014
#define FF_BUG_QPEL_CHROMA2     256
1015
#define FF_BUG_DIRECT_BLOCKSIZE 512
1016
#define FF_BUG_EDGE             1024
1017
#define FF_BUG_HPEL_CHROMA      2048
1018
#define FF_BUG_DC_CLIP          4096
1019
#define FF_BUG_MS               8192 ///< Work around various bugs in Microsoft's broken decoders.
1020
//#define FF_BUG_FAKE_SCALABILITY 16 //Autodetection should work 100%.
1021

    
1022
    /**
1023
     * luma single coefficient elimination threshold
1024
     * - encoding: Set by user.
1025
     * - decoding: unused
1026
     */
1027
    int luma_elim_threshold;
1028

    
1029
    /**
1030
     * chroma single coeff elimination threshold
1031
     * - encoding: Set by user.
1032
     * - decoding: unused
1033
     */
1034
    int chroma_elim_threshold;
1035

    
1036
    /**
1037
     * strictly follow the standard (MPEG4, ...).
1038
     * - encoding: Set by user.
1039
     * - decoding: unused
1040
     */
1041
    int strict_std_compliance;
1042
#define FF_COMPLIANCE_VERY_STRICT   2 ///< Strictly conform to a older more strict version of the spec or reference software.
1043
#define FF_COMPLIANCE_STRICT        1 ///< Strictly conform to all the things in the spec no matter what consequences.
1044
#define FF_COMPLIANCE_NORMAL        0
1045
#define FF_COMPLIANCE_INOFFICIAL   -1 ///< Allow inofficial extensions.
1046
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things.
1047

    
1048
    /**
1049
     * qscale offset between IP and B-frames
1050
     * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
1051
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1052
     * - encoding: Set by user.
1053
     * - decoding: unused
1054
     */
1055
    float b_quant_offset;
1056

    
1057
    /**
1058
     * Error resilience; higher values will detect more errors but may
1059
     * misdetect some more or less valid parts as errors.
1060
     * - encoding: unused
1061
     * - decoding: Set by user.
1062
     */
1063
    int error_resilience;
1064
#define FF_ER_CAREFUL         1
1065
#define FF_ER_COMPLIANT       2
1066
#define FF_ER_AGGRESSIVE      3
1067
#define FF_ER_VERY_AGGRESSIVE 4
1068

    
1069
    /**
1070
     * Called at the beginning of each frame to get a buffer for it.
1071
     * If pic.reference is set then the frame will be read later by libavcodec.
1072
     * avcodec_align_dimensions() should be used to find the required width and
1073
     * height, as they normally need to be rounded up to the next multiple of 16.
1074
     * - encoding: unused
1075
     * - decoding: Set by libavcodec., user can override.
1076
     */
1077
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1078

    
1079
    /**
1080
     * Called to release buffers which where allocated with get_buffer.
1081
     * A released buffer can be reused in get_buffer().
1082
     * pic.data[*] must be set to NULL.
1083
     * - encoding: unused
1084
     * - decoding: Set by libavcodec., user can override.
1085
     */
1086
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1087

    
1088
    /**
1089
     * If 1 the stream has a 1 frame delay during decoding.
1090
     * - encoding: Set by libavcodec.
1091
     * - decoding: Set by libavcodec.
1092
     */
1093
    int has_b_frames;
1094

    
1095
    /**
1096
     * number of bytes per packet if constant and known or 0
1097
     * Used by some WAV based audio codecs.
1098
     */
1099
    int block_align;
1100

    
1101
    int parse_only; /* - decoding only: If true, only parsing is done
1102
                       (function avcodec_parse_frame()). The frame
1103
                       data is returned. Only MPEG codecs support this now. */
1104

    
1105
    /**
1106
     * 0-> h263 quant 1-> mpeg quant
1107
     * - encoding: Set by user.
1108
     * - decoding: unused
1109
     */
1110
    int mpeg_quant;
1111

    
1112
    /**
1113
     * pass1 encoding statistics output buffer
1114
     * - encoding: Set by libavcodec.
1115
     * - decoding: unused
1116
     */
1117
    char *stats_out;
1118

    
1119
    /**
1120
     * pass2 encoding statistics input buffer
1121
     * Concatenated stuff from stats_out of pass1 should be placed here.
1122
     * - encoding: Allocated/set/freed by user.
1123
     * - decoding: unused
1124
     */
1125
    char *stats_in;
1126

    
1127
    /**
1128
     * ratecontrol qmin qmax limiting method
1129
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
1130
     * - encoding: Set by user.
1131
     * - decoding: unused
1132
     */
1133
    float rc_qsquish;
1134

    
1135
    float rc_qmod_amp;
1136
    int rc_qmod_freq;
1137

    
1138
    /**
1139
     * ratecontrol override, see RcOverride
1140
     * - encoding: Allocated/set/freed by user.
1141
     * - decoding: unused
1142
     */
1143
    RcOverride *rc_override;
1144
    int rc_override_count;
1145

    
1146
    /**
1147
     * rate control equation
1148
     * - encoding: Set by user
1149
     * - decoding: unused
1150
     */
1151
    char *rc_eq;
1152

    
1153
    /**
1154
     * maximum bitrate
1155
     * - encoding: Set by user.
1156
     * - decoding: unused
1157
     */
1158
    int rc_max_rate;
1159

    
1160
    /**
1161
     * minimum bitrate
1162
     * - encoding: Set by user.
1163
     * - decoding: unused
1164
     */
1165
    int rc_min_rate;
1166

    
1167
    /**
1168
     * decoder bitstream buffer size
1169
     * - encoding: Set by user.
1170
     * - decoding: unused
1171
     */
1172
    int rc_buffer_size;
1173
    float rc_buffer_aggressivity;
1174

    
1175
    /**
1176
     * qscale factor between P and I-frames
1177
     * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
1178
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1179
     * - encoding: Set by user.
1180
     * - decoding: unused
1181
     */
1182
    float i_quant_factor;
1183

    
1184
    /**
1185
     * qscale offset between P and I-frames
1186
     * - encoding: Set by user.
1187
     * - decoding: unused
1188
     */
1189
    float i_quant_offset;
1190

    
1191
    /**
1192
     * initial complexity for pass1 ratecontrol
1193
     * - encoding: Set by user.
1194
     * - decoding: unused
1195
     */
1196
    float rc_initial_cplx;
1197

    
1198
    /**
1199
     * DCT algorithm, see FF_DCT_* below
1200
     * - encoding: Set by user.
1201
     * - decoding: unused
1202
     */
1203
    int dct_algo;
1204
#define FF_DCT_AUTO    0
1205
#define FF_DCT_FASTINT 1
1206
#define FF_DCT_INT     2
1207
#define FF_DCT_MMX     3
1208
#define FF_DCT_MLIB    4
1209
#define FF_DCT_ALTIVEC 5
1210
#define FF_DCT_FAAN    6
1211

    
1212
    /**
1213
     * luminance masking (0-> disabled)
1214
     * - encoding: Set by user.
1215
     * - decoding: unused
1216
     */
1217
    float lumi_masking;
1218

    
1219
    /**
1220
     * temporary complexity masking (0-> disabled)
1221
     * - encoding: Set by user.
1222
     * - decoding: unused
1223
     */
1224
    float temporal_cplx_masking;
1225

    
1226
    /**
1227
     * spatial complexity masking (0-> disabled)
1228
     * - encoding: Set by user.
1229
     * - decoding: unused
1230
     */
1231
    float spatial_cplx_masking;
1232

    
1233
    /**
1234
     * p block masking (0-> disabled)
1235
     * - encoding: Set by user.
1236
     * - decoding: unused
1237
     */
1238
    float p_masking;
1239

    
1240
    /**
1241
     * darkness masking (0-> disabled)
1242
     * - encoding: Set by user.
1243
     * - decoding: unused
1244
     */
1245
    float dark_masking;
1246

    
1247

    
1248
    /* for binary compatibility */
1249
    int unused;
1250

    
1251
    /**
1252
     * IDCT algorithm, see FF_IDCT_* below.
1253
     * - encoding: Set by user.
1254
     * - decoding: Set by user.
1255
     */
1256
    int idct_algo;
1257
#define FF_IDCT_AUTO         0
1258
#define FF_IDCT_INT          1
1259
#define FF_IDCT_SIMPLE       2
1260
#define FF_IDCT_SIMPLEMMX    3
1261
#define FF_IDCT_LIBMPEG2MMX  4
1262
#define FF_IDCT_PS2          5
1263
#define FF_IDCT_MLIB         6
1264
#define FF_IDCT_ARM          7
1265
#define FF_IDCT_ALTIVEC      8
1266
#define FF_IDCT_SH4          9
1267
#define FF_IDCT_SIMPLEARM    10
1268
#define FF_IDCT_H264         11
1269
#define FF_IDCT_VP3          12
1270
#define FF_IDCT_IPP          13
1271
#define FF_IDCT_XVIDMMX      14
1272
#define FF_IDCT_CAVS         15
1273
#define FF_IDCT_SIMPLEARMV5TE 16
1274
#define FF_IDCT_SIMPLEARMV6  17
1275

    
1276
    /**
1277
     * slice count
1278
     * - encoding: Set by libavcodec.
1279
     * - decoding: Set by user (or 0).
1280
     */
1281
    int slice_count;
1282
    /**
1283
     * slice offsets in the frame in bytes
1284
     * - encoding: Set/allocated by libavcodec.
1285
     * - decoding: Set/allocated by user (or NULL).
1286
     */
1287
    int *slice_offset;
1288

    
1289
    /**
1290
     * error concealment flags
1291
     * - encoding: unused
1292
     * - decoding: Set by user.
1293
     */
1294
    int error_concealment;
1295
#define FF_EC_GUESS_MVS   1
1296
#define FF_EC_DEBLOCK     2
1297

    
1298
    /**
1299
     * dsp_mask could be add used to disable unwanted CPU features
1300
     * CPU features (i.e. MMX, SSE. ...)
1301
     *
1302
     * With the FORCE flag you may instead enable given CPU features.
1303
     * (Dangerous: Usable in case of misdetection, improper usage however will
1304
     * result into program crash.)
1305
     */
1306
    unsigned dsp_mask;
1307
#define FF_MM_FORCE    0x80000000 /* Force usage of selected flags (OR) */
1308
    /* lower 16 bits - CPU features */
1309
#ifdef HAVE_MMX
1310
#define FF_MM_MMX      0x0001 /* standard MMX */
1311
#define FF_MM_3DNOW    0x0004 /* AMD 3DNOW */
1312
#define FF_MM_MMXEXT   0x0002 /* SSE integer functions or AMD MMX ext */
1313
#define FF_MM_SSE      0x0008 /* SSE functions */
1314
#define FF_MM_SSE2     0x0010 /* PIV SSE2 functions */
1315
#define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1316
#endif /* HAVE_MMX */
1317
#ifdef HAVE_IWMMXT
1318
#define FF_MM_IWMMXT   0x0100 /* XScale IWMMXT */
1319
#endif /* HAVE_IWMMXT */
1320

    
1321
    /**
1322
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1323
     * - encoding: Set by libavcodec.
1324
     * - decoding: Set by user.
1325
     */
1326
     int bits_per_sample;
1327

    
1328
    /**
1329
     * prediction method (needed for huffyuv)
1330
     * - encoding: Set by user.
1331
     * - decoding: unused
1332
     */
1333
     int prediction_method;
1334
#define FF_PRED_LEFT   0
1335
#define FF_PRED_PLANE  1
1336
#define FF_PRED_MEDIAN 2
1337

    
1338
    /**
1339
     * sample aspect ratio (0 if unknown)
1340
     * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
1341
     * - encoding: Set by user.
1342
     * - decoding: Set by libavcodec.
1343
     */
1344
    AVRational sample_aspect_ratio;
1345

    
1346
    /**
1347
     * the picture in the bitstream
1348
     * - encoding: Set by libavcodec.
1349
     * - decoding: Set by libavcodec.
1350
     */
1351
    AVFrame *coded_frame;
1352

    
1353
    /**
1354
     * debug
1355
     * - encoding: Set by user.
1356
     * - decoding: Set by user.
1357
     */
1358
    int debug;
1359
#define FF_DEBUG_PICT_INFO 1
1360
#define FF_DEBUG_RC        2
1361
#define FF_DEBUG_BITSTREAM 4
1362
#define FF_DEBUG_MB_TYPE   8
1363
#define FF_DEBUG_QP        16
1364
#define FF_DEBUG_MV        32
1365
#define FF_DEBUG_DCT_COEFF 0x00000040
1366
#define FF_DEBUG_SKIP      0x00000080
1367
#define FF_DEBUG_STARTCODE 0x00000100
1368
#define FF_DEBUG_PTS       0x00000200
1369
#define FF_DEBUG_ER        0x00000400
1370
#define FF_DEBUG_MMCO      0x00000800
1371
#define FF_DEBUG_BUGS      0x00001000
1372
#define FF_DEBUG_VIS_QP    0x00002000
1373
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1374

    
1375
    /**
1376
     * debug
1377
     * - encoding: Set by user.
1378
     * - decoding: Set by user.
1379
     */
1380
    int debug_mv;
1381
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1382
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1383
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1384

    
1385
    /**
1386
     * error
1387
     * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
1388
     * - decoding: unused
1389
     */
1390
    uint64_t error[4];
1391

    
1392
    /**
1393
     * minimum MB quantizer
1394
     * - encoding: unused
1395
     * - decoding: unused
1396
     */
1397
    int mb_qmin;
1398

    
1399
    /**
1400
     * maximum MB quantizer
1401
     * - encoding: unused
1402
     * - decoding: unused
1403
     */
1404
    int mb_qmax;
1405

    
1406
    /**
1407
     * motion estimation comparison function
1408
     * - encoding: Set by user.
1409
     * - decoding: unused
1410
     */
1411
    int me_cmp;
1412
    /**
1413
     * subpixel motion estimation comparison function
1414
     * - encoding: Set by user.
1415
     * - decoding: unused
1416
     */
1417
    int me_sub_cmp;
1418
    /**
1419
     * macroblock comparison function (not supported yet)
1420
     * - encoding: Set by user.
1421
     * - decoding: unused
1422
     */
1423
    int mb_cmp;
1424
    /**
1425
     * interlaced DCT comparison function
1426
     * - encoding: Set by user.
1427
     * - decoding: unused
1428
     */
1429
    int ildct_cmp;
1430
#define FF_CMP_SAD  0
1431
#define FF_CMP_SSE  1
1432
#define FF_CMP_SATD 2
1433
#define FF_CMP_DCT  3
1434
#define FF_CMP_PSNR 4
1435
#define FF_CMP_BIT  5
1436
#define FF_CMP_RD   6
1437
#define FF_CMP_ZERO 7
1438
#define FF_CMP_VSAD 8
1439
#define FF_CMP_VSSE 9
1440
#define FF_CMP_NSSE 10
1441
#define FF_CMP_W53  11
1442
#define FF_CMP_W97  12
1443
#define FF_CMP_DCTMAX 13
1444
#define FF_CMP_DCT264 14
1445
#define FF_CMP_CHROMA 256
1446

    
1447
    /**
1448
     * ME diamond size & shape
1449
     * - encoding: Set by user.
1450
     * - decoding: unused
1451
     */
1452
    int dia_size;
1453

    
1454
    /**
1455
     * amount of previous MV predictors (2a+1 x 2a+1 square)
1456
     * - encoding: Set by user.
1457
     * - decoding: unused
1458
     */
1459
    int last_predictor_count;
1460

    
1461
    /**
1462
     * prepass for motion estimation
1463
     * - encoding: Set by user.
1464
     * - decoding: unused
1465
     */
1466
    int pre_me;
1467

    
1468
    /**
1469
     * motion estimation prepass comparison function
1470
     * - encoding: Set by user.
1471
     * - decoding: unused
1472
     */
1473
    int me_pre_cmp;
1474

    
1475
    /**
1476
     * ME prepass diamond size & shape
1477
     * - encoding: Set by user.
1478
     * - decoding: unused
1479
     */
1480
    int pre_dia_size;
1481

    
1482
    /**
1483
     * subpel ME quality
1484
     * - encoding: Set by user.
1485
     * - decoding: unused
1486
     */
1487
    int me_subpel_quality;
1488

    
1489
    /**
1490
     * callback to negotiate the pixelFormat
1491
     * @param fmt is the list of formats which are supported by the codec,
1492
     * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
1493
     * The first is always the native one.
1494
     * @return the chosen format
1495
     * - encoding: unused
1496
     * - decoding: Set by user, if not set the native format will be chosen.
1497
     */
1498
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1499

    
1500
    /**
1501
     * DTG active format information (additional aspect ratio
1502
     * information only used in DVB MPEG-2 transport streams)
1503
     * 0 if not set.
1504
     *
1505
     * - encoding: unused
1506
     * - decoding: Set by decoder.
1507
     */
1508
    int dtg_active_format;
1509
#define FF_DTG_AFD_SAME         8
1510
#define FF_DTG_AFD_4_3          9
1511
#define FF_DTG_AFD_16_9         10
1512
#define FF_DTG_AFD_14_9         11
1513
#define FF_DTG_AFD_4_3_SP_14_9  13
1514
#define FF_DTG_AFD_16_9_SP_14_9 14
1515
#define FF_DTG_AFD_SP_4_3       15
1516

    
1517
    /**
1518
     * maximum motion estimation search range in subpel units
1519
     * If 0 then no limit.
1520
     *
1521
     * - encoding: Set by user.
1522
     * - decoding: unused
1523
     */
1524
    int me_range;
1525

    
1526
    /**
1527
     * intra quantizer bias
1528
     * - encoding: Set by user.
1529
     * - decoding: unused
1530
     */
1531
    int intra_quant_bias;
1532
#define FF_DEFAULT_QUANT_BIAS 999999
1533

    
1534
    /**
1535
     * inter quantizer bias
1536
     * - encoding: Set by user.
1537
     * - decoding: unused
1538
     */
1539
    int inter_quant_bias;
1540

    
1541
    /**
1542
     * color table ID
1543
     * - encoding: unused
1544
     * - decoding: Which clrtable should be used for 8bit RGB images.
1545
     *             Tables have to be stored somewhere. FIXME
1546
     */
1547
    int color_table_id;
1548

    
1549
    /**
1550
     * internal_buffer count
1551
     * Don't touch, used by libavcodec default_get_buffer().
1552
     */
1553
    int internal_buffer_count;
1554

    
1555
    /**
1556
     * internal_buffers
1557
     * Don't touch, used by libavcodec default_get_buffer().
1558
     */
1559
    void *internal_buffer;
1560

    
1561
#define FF_LAMBDA_SHIFT 7
1562
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1563
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1564
#define FF_LAMBDA_MAX (256*128-1)
1565

    
1566
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1567
    /**
1568
     * Global quality for codecs which cannot change it per frame.
1569
     * This should be proportional to MPEG-1/2/4 qscale.
1570
     * - encoding: Set by user.
1571
     * - decoding: unused
1572
     */
1573
    int global_quality;
1574

    
1575
#define FF_CODER_TYPE_VLC       0
1576
#define FF_CODER_TYPE_AC        1
1577
#define FF_CODER_TYPE_RAW       2
1578
#define FF_CODER_TYPE_RLE       3
1579
#define FF_CODER_TYPE_DEFLATE   4
1580
    /**
1581
     * coder type
1582
     * - encoding: Set by user.
1583
     * - decoding: unused
1584
     */
1585
    int coder_type;
1586

    
1587
    /**
1588
     * context model
1589
     * - encoding: Set by user.
1590
     * - decoding: unused
1591
     */
1592
    int context_model;
1593
#if 0
1594
    /**
1595
     *
1596
     * - encoding: unused
1597
     * - decoding: Set by user.
1598
     */
1599
    uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1600
#endif
1601

    
1602
    /**
1603
     * slice flags
1604
     * - encoding: unused
1605
     * - decoding: Set by user.
1606
     */
1607
    int slice_flags;
1608
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1609
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1610
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1611

    
1612
    /**
1613
     * XVideo Motion Acceleration
1614
     * - encoding: forbidden
1615
     * - decoding: set by decoder
1616
     */
1617
    int xvmc_acceleration;
1618

    
1619
    /**
1620
     * macroblock decision mode
1621
     * - encoding: Set by user.
1622
     * - decoding: unused
1623
     */
1624
    int mb_decision;
1625
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1626
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1627
#define FF_MB_DECISION_RD     2        ///< rate distoration
1628

    
1629
    /**
1630
     * custom intra quantization matrix
1631
     * - encoding: Set by user, can be NULL.
1632
     * - decoding: Set by libavcodec.
1633
     */
1634
    uint16_t *intra_matrix;
1635

    
1636
    /**
1637
     * custom inter quantization matrix
1638
     * - encoding: Set by user, can be NULL.
1639
     * - decoding: Set by libavcodec.
1640
     */
1641
    uint16_t *inter_matrix;
1642

    
1643
    /**
1644
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1645
     * This is used to work around some encoder bugs.
1646
     * - encoding: unused
1647
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
1648
     */
1649
    unsigned int stream_codec_tag;
1650

    
1651
    /**
1652
     * scene change detection threshold
1653
     * 0 is default, larger means fewer detected scene changes.
1654
     * - encoding: Set by user.
1655
     * - decoding: unused
1656
     */
1657
    int scenechange_threshold;
1658

    
1659
    /**
1660
     * minimum Lagrange multipler
1661
     * - encoding: Set by user.
1662
     * - decoding: unused
1663
     */
1664
    int lmin;
1665

    
1666
    /**
1667
     * maximum Lagrange multipler
1668
     * - encoding: Set by user.
1669
     * - decoding: unused
1670
     */
1671
    int lmax;
1672

    
1673
    /**
1674
     * palette control structure
1675
     * - encoding: ??? (no palette-enabled encoder yet)
1676
     * - decoding: Set by user.
1677
     */
1678
    struct AVPaletteControl *palctrl;
1679

    
1680
    /**
1681
     * noise reduction strength
1682
     * - encoding: Set by user.
1683
     * - decoding: unused
1684
     */
1685
    int noise_reduction;
1686

    
1687
    /**
1688
     * Called at the beginning of a frame to get cr buffer for it.
1689
     * Buffer type (size, hints) must be the same. libavcodec won't check it.
1690
     * libavcodec will pass previous buffer in pic, function should return
1691
     * same buffer or new buffer with old frame "painted" into it.
1692
     * If pic.data[0] == NULL must behave like get_buffer().
1693
     * - encoding: unused
1694
     * - decoding: Set by libavcodec., user can override
1695
     */
1696
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1697

    
1698
    /**
1699
     * Number of bits which should be loaded into the rc buffer before decoding starts.
1700
     * - encoding: Set by user.
1701
     * - decoding: unused
1702
     */
1703
    int rc_initial_buffer_occupancy;
1704

    
1705
    /**
1706
     *
1707
     * - encoding: Set by user.
1708
     * - decoding: unused
1709
     */
1710
    int inter_threshold;
1711

    
1712
    /**
1713
     * CODEC_FLAG2_*
1714
     * - encoding: Set by user.
1715
     * - decoding: Set by user.
1716
     */
1717
    int flags2;
1718

    
1719
    /**
1720
     * Simulates errors in the bitstream to test error concealment.
1721
     * - encoding: Set by user.
1722
     * - decoding: unused
1723
     */
1724
    int error_rate;
1725

    
1726
    /**
1727
     * MP3 antialias algorithm, see FF_AA_* below.
1728
     * - encoding: unused
1729
     * - decoding: Set by user.
1730
     */
1731
    int antialias_algo;
1732
#define FF_AA_AUTO    0
1733
#define FF_AA_FASTINT 1 //not implemented yet
1734
#define FF_AA_INT     2
1735
#define FF_AA_FLOAT   3
1736
    /**
1737
     * quantizer noise shaping
1738
     * - encoding: Set by user.
1739
     * - decoding: unused
1740
     */
1741
    int quantizer_noise_shaping;
1742

    
1743
    /**
1744
     * thread count
1745
     * is used to decide how many independent tasks should be passed to execute()
1746
     * - encoding: Set by user.
1747
     * - decoding: Set by user.
1748
     */
1749
    int thread_count;
1750

    
1751
    /**
1752
     * The codec may call this to execute several independent things.
1753
     * It will return only after finishing all tasks.
1754
     * The user may replace this with some multithreaded implementation,
1755
     * the default implementation will execute the parts serially.
1756
     * @param count the number of things to execute
1757
     * - encoding: Set by libavcodec, user can override.
1758
     * - decoding: Set by libavcodec, user can override.
1759
     */
1760
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1761

    
1762
    /**
1763
     * thread opaque
1764
     * Can be used by execute() to store some per AVCodecContext stuff.
1765
     * - encoding: set by execute()
1766
     * - decoding: set by execute()
1767
     */
1768
    void *thread_opaque;
1769

    
1770
    /**
1771
     * Motion estimation threshold below which no motion estimation is
1772
     * performed, but instead the user specified motion vectors are used.
1773
     *
1774
     * - encoding: Set by user.
1775
     * - decoding: unused
1776
     */
1777
     int me_threshold;
1778

    
1779
    /**
1780
     * Macroblock threshold below which the user specified macroblock types will be used.
1781
     * - encoding: Set by user.
1782
     * - decoding: unused
1783
     */
1784
     int mb_threshold;
1785

    
1786
    /**
1787
     * precision of the intra DC coefficient - 8
1788
     * - encoding: Set by user.
1789
     * - decoding: unused
1790
     */
1791
     int intra_dc_precision;
1792

    
1793
    /**
1794
     * noise vs. sse weight for the nsse comparsion function
1795
     * - encoding: Set by user.
1796
     * - decoding: unused
1797
     */
1798
     int nsse_weight;
1799

    
1800
    /**
1801
     * Number of macroblock rows at the top which are skipped.
1802
     * - encoding: unused
1803
     * - decoding: Set by user.
1804
     */
1805
     int skip_top;
1806

    
1807
    /**
1808
     * Number of macroblock rows at the bottom which are skipped.
1809
     * - encoding: unused
1810
     * - decoding: Set by user.
1811
     */
1812
     int skip_bottom;
1813

    
1814
    /**
1815
     * profile
1816
     * - encoding: Set by user.
1817
     * - decoding: Set by libavcodec.
1818
     */
1819
     int profile;
1820
#define FF_PROFILE_UNKNOWN -99
1821

    
1822
    /**
1823
     * level
1824
     * - encoding: Set by user.
1825
     * - decoding: Set by libavcodec.
1826
     */
1827
     int level;
1828
#define FF_LEVEL_UNKNOWN -99
1829

    
1830
    /**
1831
     * low resolution decoding, 1-> 1/2 size, 2->1/4 size
1832
     * - encoding: unused
1833
     * - decoding: Set by user.
1834
     */
1835
     int lowres;
1836

    
1837
    /**
1838
     * Bitstream width / height, may be different from width/height if lowres
1839
     * or other things are used.
1840
     * - encoding: unused
1841
     * - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
1842
     */
1843
    int coded_width, coded_height;
1844

    
1845
    /**
1846
     * frame skip threshold
1847
     * - encoding: Set by user.
1848
     * - decoding: unused
1849
     */
1850
    int frame_skip_threshold;
1851

    
1852
    /**
1853
     * frame skip factor
1854
     * - encoding: Set by user.
1855
     * - decoding: unused
1856
     */
1857
    int frame_skip_factor;
1858

    
1859
    /**
1860
     * frame skip exponent
1861
     * - encoding: Set by user.
1862
     * - decoding: unused
1863
     */
1864
    int frame_skip_exp;
1865

    
1866
    /**
1867
     * frame skip comparison function
1868
     * - encoding: Set by user.
1869
     * - decoding: unused
1870
     */
1871
    int frame_skip_cmp;
1872

    
1873
    /**
1874
     * Border processing masking, raises the quantizer for mbs on the borders
1875
     * of the picture.
1876
     * - encoding: Set by user.
1877
     * - decoding: unused
1878
     */
1879
    float border_masking;
1880

    
1881
    /**
1882
     * minimum MB lagrange multipler
1883
     * - encoding: Set by user.
1884
     * - decoding: unused
1885
     */
1886
    int mb_lmin;
1887

    
1888
    /**
1889
     * maximum MB lagrange multipler
1890
     * - encoding: Set by user.
1891
     * - decoding: unused
1892
     */
1893
    int mb_lmax;
1894

    
1895
    /**
1896
     *
1897
     * - encoding: Set by user.
1898
     * - decoding: unused
1899
     */
1900
    int me_penalty_compensation;
1901

    
1902
    /**
1903
     *
1904
     * - encoding: unused
1905
     * - decoding: Set by user.
1906
     */
1907
    enum AVDiscard skip_loop_filter;
1908

    
1909
    /**
1910
     *
1911
     * - encoding: unused
1912
     * - decoding: Set by user.
1913
     */
1914
    enum AVDiscard skip_idct;
1915

    
1916
    /**
1917
     *
1918
     * - encoding: unused
1919
     * - decoding: Set by user.
1920
     */
1921
    enum AVDiscard skip_frame;
1922

    
1923
    /**
1924
     *
1925
     * - encoding: Set by user.
1926
     * - decoding: unused
1927
     */
1928
    int bidir_refine;
1929

    
1930
    /**
1931
     *
1932
     * - encoding: Set by user.
1933
     * - decoding: unused
1934
     */
1935
    int brd_scale;
1936

    
1937
    /**
1938
     * constant rate factor - quality-based VBR - values ~correspond to qps
1939
     * - encoding: Set by user.
1940
     * - decoding: unused
1941
     */
1942
    float crf;
1943

    
1944
    /**
1945
     * constant quantization parameter rate control method
1946
     * - encoding: Set by user.
1947
     * - decoding: unused
1948
     */
1949
    int cqp;
1950

    
1951
    /**
1952
     * minimum GOP size
1953
     * - encoding: Set by user.
1954
     * - decoding: unused
1955
     */
1956
    int keyint_min;
1957

    
1958
    /**
1959
     * number of reference frames
1960
     * - encoding: Set by user.
1961
     * - decoding: unused
1962
     */
1963
    int refs;
1964

    
1965
    /**
1966
     * chroma qp offset from luma
1967
     * - encoding: Set by user.
1968
     * - decoding: unused
1969
     */
1970
    int chromaoffset;
1971

    
1972
    /**
1973
     * Influences how often B-frames are used.
1974
     * - encoding: Set by user.
1975
     * - decoding: unused
1976
     */
1977
    int bframebias;
1978

    
1979
    /**
1980
     * trellis RD quantization
1981
     * - encoding: Set by user.
1982
     * - decoding: unused
1983
     */
1984
    int trellis;
1985

    
1986
    /**
1987
     * Reduce fluctuations in qp (before curve compression).
1988
     * - encoding: Set by user.
1989
     * - decoding: unused
1990
     */
1991
    float complexityblur;
1992

    
1993
    /**
1994
     * in-loop deblocking filter alphac0 parameter
1995
     * alpha is in the range -6...6
1996
     * - encoding: Set by user.
1997
     * - decoding: unused
1998
     */
1999
    int deblockalpha;
2000

    
2001
    /**
2002
     * in-loop deblocking filter beta parameter
2003
     * beta is in the range -6...6
2004
     * - encoding: Set by user.
2005
     * - decoding: unused
2006
     */
2007
    int deblockbeta;
2008

    
2009
    /**
2010
     * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
2011
     * - encoding: Set by user.
2012
     * - decoding: unused
2013
     */
2014
    int partitions;
2015
#define X264_PART_I4X4 0x001  /* Analyse i4x4 */
2016
#define X264_PART_I8X8 0x002  /* Analyse i8x8 (requires 8x8 transform) */
2017
#define X264_PART_P8X8 0x010  /* Analyse p16x8, p8x16 and p8x8 */
2018
#define X264_PART_P4X4 0x020  /* Analyse p8x4, p4x8, p4x4 */
2019
#define X264_PART_B8X8 0x100  /* Analyse b16x8, b8x16 and b8x8 */
2020

    
2021
    /**
2022
     * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal)
2023
     * - encoding: Set by user.
2024
     * - decoding: unused
2025
     */
2026
    int directpred;
2027

    
2028
    /**
2029
     * Audio cutoff bandwidth (0 means "automatic"), currently used only by FAAC.
2030
     * - encoding: Set by user.
2031
     * - decoding: unused
2032
     */
2033
    int cutoff;
2034

    
2035
    /**
2036
     * Multiplied by qscale for each frame and added to scene_change_score.
2037
     * - encoding: Set by user.
2038
     * - decoding: unused
2039
     */
2040
    int scenechange_factor;
2041

    
2042
    /**
2043
     *
2044
     * Note: Value depends upon the compare function used for fullpel ME.
2045
     * - encoding: Set by user.
2046
     * - decoding: unused
2047
     */
2048
    int mv0_threshold;
2049

    
2050
    /**
2051
     * Adjusts sensitivity of b_frame_strategy 1.
2052
     * - encoding: Set by user.
2053
     * - decoding: unused
2054
     */
2055
    int b_sensitivity;
2056

    
2057
    /**
2058
     * - encoding: Set by user.
2059
     * - decoding: unused
2060
     */
2061
    int compression_level;
2062
#define FF_COMPRESSION_DEFAULT -1
2063

    
2064
    /**
2065
     * Sets whether to use LPC mode - used by FLAC encoder.
2066
     * - encoding: Set by user.
2067
     * - decoding: unused
2068
     */
2069
    int use_lpc;
2070

    
2071
    /**
2072
     * LPC coefficient precision - used by FLAC encoder
2073
     * - encoding: Set by user.
2074
     * - decoding: unused
2075
     */
2076
    int lpc_coeff_precision;
2077

    
2078
    /**
2079
     * - encoding: Set by user.
2080
     * - decoding: unused
2081
     */
2082
    int min_prediction_order;
2083

    
2084
    /**
2085
     * - encoding: Set by user.
2086
     * - decoding: unused
2087
     */
2088
    int max_prediction_order;
2089

    
2090
    /**
2091
     * search method for selecting prediction order
2092
     * - encoding: Set by user.
2093
     * - decoding: unused
2094
     */
2095
    int prediction_order_method;
2096

    
2097
    /**
2098
     * - encoding: Set by user.
2099
     * - decoding: unused
2100
     */
2101
    int min_partition_order;
2102

    
2103
    /**
2104
     * - encoding: Set by user.
2105
     * - decoding: unused
2106
     */
2107
    int max_partition_order;
2108

    
2109
    /**
2110
     * GOP timecode frame start number, in non drop frame format
2111
     * - encoding: Set by user.
2112
     * - decoding: unused
2113
     */
2114
    int64_t timecode_frame_start;
2115
} AVCodecContext;
2116

    
2117
/**
2118
 * AVCodec.
2119
 */
2120
typedef struct AVCodec {
2121
    const char *name;
2122
    enum CodecType type;
2123
    enum CodecID id;
2124
    int priv_data_size;
2125
    int (*init)(AVCodecContext *);
2126
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2127
    int (*close)(AVCodecContext *);
2128
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2129
                  uint8_t *buf, int buf_size);
2130
    int capabilities;
2131
    struct AVCodec *next;
2132
    void (*flush)(AVCodecContext *);
2133
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2134
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2135
} AVCodec;
2136

    
2137
/**
2138
 * four components are given, that's all.
2139
 * the last component is alpha
2140
 */
2141
typedef struct AVPicture {
2142
    uint8_t *data[4];
2143
    int linesize[4];       ///< number of bytes per line
2144
} AVPicture;
2145

    
2146
/**
2147
 * AVPaletteControl
2148
 * This structure defines a method for communicating palette changes
2149
 * between and demuxer and a decoder.
2150
 * This is totally broken, palette changes should be sent as AVPackets.
2151
 */
2152
#define AVPALETTE_SIZE 1024
2153
#define AVPALETTE_COUNT 256
2154
typedef struct AVPaletteControl {
2155

    
2156
    /* Demuxer sets this to 1 to indicate the palette has changed;
2157
     * decoder resets to 0. */
2158
    int palette_changed;
2159

    
2160
    /* 4-byte ARGB palette entries, stored in native byte order; note that
2161
     * the individual palette components should be on a 8-bit scale; if
2162
     * the palette data comes from an IBM VGA native format, the component
2163
     * data is probably 6 bits in size and needs to be scaled. */
2164
    unsigned int palette[AVPALETTE_COUNT];
2165

    
2166
} AVPaletteControl attribute_deprecated;
2167

    
2168
typedef struct AVSubtitleRect {
2169
    uint16_t x;
2170
    uint16_t y;
2171
    uint16_t w;
2172
    uint16_t h;
2173
    uint16_t nb_colors;
2174
    int linesize;
2175
    uint32_t *rgba_palette;
2176
    uint8_t *bitmap;
2177
} AVSubtitleRect;
2178

    
2179
typedef struct AVSubtitle {
2180
    uint16_t format; /* 0 = graphics */
2181
    uint32_t start_display_time; /* relative to packet pts, in ms */
2182
    uint32_t end_display_time; /* relative to packet pts, in ms */
2183
    uint32_t num_rects;
2184
    AVSubtitleRect *rects;
2185
} AVSubtitle;
2186

    
2187
extern AVCodec ac3_encoder;
2188
extern AVCodec amr_nb_encoder;
2189
extern AVCodec amr_wb_encoder;
2190
extern AVCodec asv1_encoder;
2191
extern AVCodec asv2_encoder;
2192
extern AVCodec bmp_encoder;
2193
extern AVCodec dvvideo_encoder;
2194
extern AVCodec faac_encoder;
2195
extern AVCodec ffv1_encoder;
2196
extern AVCodec ffvhuff_encoder;
2197
extern AVCodec flac_encoder;
2198
extern AVCodec flashsv_encoder;
2199
extern AVCodec flv_encoder;
2200
extern AVCodec gif_encoder;
2201
extern AVCodec h261_encoder;
2202
extern AVCodec h263_encoder;
2203
extern AVCodec h263p_encoder;
2204
extern AVCodec h264_encoder;
2205
extern AVCodec huffyuv_encoder;
2206
extern AVCodec jpegls_encoder;
2207
extern AVCodec libgsm_encoder;
2208
extern AVCodec libgsm_ms_encoder;
2209
extern AVCodec libtheora_encoder;
2210
extern AVCodec ljpeg_encoder;
2211
extern AVCodec mdec_encoder;
2212
extern AVCodec mjpeg_encoder;
2213
extern AVCodec mp2_encoder;
2214
extern AVCodec mp3lame_encoder;
2215
extern AVCodec mpeg1video_encoder;
2216
extern AVCodec mpeg2video_encoder;
2217
extern AVCodec mpeg4_encoder;
2218
extern AVCodec msmpeg4v1_encoder;
2219
extern AVCodec msmpeg4v2_encoder;
2220
extern AVCodec msmpeg4v3_encoder;
2221
extern AVCodec oggvorbis_encoder;
2222
extern AVCodec pam_encoder;
2223
extern AVCodec pbm_encoder;
2224
extern AVCodec pgm_encoder;
2225
extern AVCodec pgmyuv_encoder;
2226
extern AVCodec png_encoder;
2227
extern AVCodec ppm_encoder;
2228
extern AVCodec rv10_encoder;
2229
extern AVCodec rv20_encoder;
2230
extern AVCodec sgi_encoder;
2231
extern AVCodec snow_encoder;
2232
extern AVCodec sonic_encoder;
2233
extern AVCodec sonic_ls_encoder;
2234
extern AVCodec svq1_encoder;
2235
extern AVCodec targa_encoder;
2236
extern AVCodec tiff_encoder;
2237
extern AVCodec vcr1_encoder;
2238
extern AVCodec vorbis_encoder;
2239
extern AVCodec wmav1_encoder;
2240
extern AVCodec wmav2_encoder;
2241
extern AVCodec wmv1_encoder;
2242
extern AVCodec wmv2_encoder;
2243
extern AVCodec x264_encoder;
2244
extern AVCodec xvid_encoder;
2245
extern AVCodec zlib_encoder;
2246
extern AVCodec zmbv_encoder;
2247

    
2248
extern AVCodec aac_decoder;
2249
extern AVCodec aasc_decoder;
2250
extern AVCodec alac_decoder;
2251
extern AVCodec amr_nb_decoder;
2252
extern AVCodec amr_wb_decoder;
2253
extern AVCodec asv1_decoder;
2254
extern AVCodec asv2_decoder;
2255
extern AVCodec avs_decoder;
2256
extern AVCodec bethsoftvid_decoder;
2257
extern AVCodec bmp_decoder;
2258
extern AVCodec c93_decoder;
2259
extern AVCodec cavs_decoder;
2260
extern AVCodec cinepak_decoder;
2261
extern AVCodec cljr_decoder;
2262
extern AVCodec cook_decoder;
2263
extern AVCodec cscd_decoder;
2264
extern AVCodec cyuv_decoder;
2265
extern AVCodec dca_decoder;
2266
extern AVCodec dnxhd_decoder;
2267
extern AVCodec dsicinaudio_decoder;
2268
extern AVCodec dsicinvideo_decoder;
2269
extern AVCodec dvvideo_decoder;
2270
extern AVCodec dxa_decoder;
2271
extern AVCodec eightbps_decoder;
2272
extern AVCodec ffv1_decoder;
2273
extern AVCodec ffvhuff_decoder;
2274
extern AVCodec flac_decoder;
2275
extern AVCodec flashsv_decoder;
2276
extern AVCodec flic_decoder;
2277
extern AVCodec flv_decoder;
2278
extern AVCodec fourxm_decoder;
2279
extern AVCodec fraps_decoder;
2280
extern AVCodec gif_decoder;
2281
extern AVCodec h261_decoder;
2282
extern AVCodec h263_decoder;
2283
extern AVCodec h263i_decoder;
2284
extern AVCodec h264_decoder;
2285
extern AVCodec huffyuv_decoder;
2286
extern AVCodec idcin_decoder;
2287
extern AVCodec imc_decoder;
2288
extern AVCodec indeo2_decoder;
2289
extern AVCodec indeo3_decoder;
2290
extern AVCodec interplay_dpcm_decoder;
2291
extern AVCodec interplay_video_decoder;
2292
extern AVCodec kmvc_decoder;
2293
extern AVCodec libgsm_decoder;
2294
extern AVCodec libgsm_ms_decoder;
2295
extern AVCodec loco_decoder;
2296
extern AVCodec mace3_decoder;
2297
extern AVCodec mace6_decoder;
2298
extern AVCodec mdec_decoder;
2299
extern AVCodec mjpeg_decoder;
2300
extern AVCodec mjpegb_decoder;
2301
extern AVCodec mmvideo_decoder;
2302
extern AVCodec mp2_decoder;
2303
extern AVCodec mp3_decoder;
2304
extern AVCodec mp3adu_decoder;
2305
extern AVCodec mp3on4_decoder;
2306
extern AVCodec mpc7_decoder;
2307
extern AVCodec mpeg1video_decoder;
2308
extern AVCodec mpeg2video_decoder;
2309
extern AVCodec mpeg4_decoder;
2310
extern AVCodec mpeg4aac_decoder;
2311
extern AVCodec mpeg_xvmc_decoder;
2312
extern AVCodec mpegvideo_decoder;
2313
extern AVCodec msmpeg4v1_decoder;
2314
extern AVCodec msmpeg4v2_decoder;
2315
extern AVCodec msmpeg4v3_decoder;
2316
extern AVCodec msrle_decoder;
2317
extern AVCodec msvideo1_decoder;
2318
extern AVCodec mszh_decoder;
2319
extern AVCodec nuv_decoder;
2320
extern AVCodec oggvorbis_decoder;
2321
extern AVCodec png_decoder;
2322
extern AVCodec qdm2_decoder;
2323
extern AVCodec qdraw_decoder;
2324
extern AVCodec qpeg_decoder;
2325
extern AVCodec qtrle_decoder;
2326
extern AVCodec ra_144_decoder;
2327
extern AVCodec ra_288_decoder;
2328
extern AVCodec roq_decoder;
2329
extern AVCodec roq_dpcm_decoder;
2330
extern AVCodec rpza_decoder;
2331
extern AVCodec rv10_decoder;
2332
extern AVCodec rv20_decoder;
2333
extern AVCodec rv30_decoder;
2334
extern AVCodec rv40_decoder;
2335
extern AVCodec sgi_decoder;
2336
extern AVCodec shorten_decoder;
2337
extern AVCodec smackaud_decoder;
2338
extern AVCodec smacker_decoder;
2339
extern AVCodec smc_decoder;
2340
extern AVCodec snow_decoder;
2341
extern AVCodec sol_dpcm_decoder;
2342
extern AVCodec sonic_decoder;
2343
extern AVCodec sp5x_decoder;
2344
extern AVCodec svq1_decoder;
2345
extern AVCodec svq3_decoder;
2346
extern AVCodec targa_decoder;
2347
extern AVCodec theora_decoder;
2348
extern AVCodec thp_decoder;
2349
extern AVCodec tiertexseqvideo_decoder;
2350
extern AVCodec tiff_decoder;
2351
extern AVCodec truemotion1_decoder;
2352
extern AVCodec truemotion2_decoder;
2353
extern AVCodec truespeech_decoder;
2354
extern AVCodec tscc_decoder;
2355
extern AVCodec tta_decoder;
2356
extern AVCodec ulti_decoder;
2357
extern AVCodec vc1_decoder;
2358
extern AVCodec vcr1_decoder;
2359
extern AVCodec vmdaudio_decoder;
2360
extern AVCodec vmdvideo_decoder;
2361
extern AVCodec vmnc_decoder;
2362
extern AVCodec vorbis_decoder;
2363
extern AVCodec vp3_decoder;
2364
extern AVCodec vp5_decoder;
2365
extern AVCodec vp6_decoder;
2366
extern AVCodec vp6f_decoder;
2367
extern AVCodec vqa_decoder;
2368
extern AVCodec wavpack_decoder;
2369
extern AVCodec wmav1_decoder;
2370
extern AVCodec wmav2_decoder;
2371
extern AVCodec wmv1_decoder;
2372
extern AVCodec wmv2_decoder;
2373
extern AVCodec wmv3_decoder;
2374
extern AVCodec wnv1_decoder;
2375
extern AVCodec ws_snd1_decoder;
2376
extern AVCodec xan_dpcm_decoder;
2377
extern AVCodec xan_wc3_decoder;
2378
extern AVCodec xl_decoder;
2379
extern AVCodec zlib_decoder;
2380
extern AVCodec zmbv_decoder;
2381

    
2382
/* PCM codecs */
2383
#define PCM_CODEC(id, name) \
2384
extern AVCodec name ## _decoder; \
2385
extern AVCodec name ## _encoder
2386

    
2387
PCM_CODEC(CODEC_ID_PCM_ALAW,    pcm_alaw);
2388
PCM_CODEC(CODEC_ID_PCM_MULAW,   pcm_mulaw);
2389
PCM_CODEC(CODEC_ID_PCM_S8,      pcm_s8);
2390
PCM_CODEC(CODEC_ID_PCM_S16BE,   pcm_s16be);
2391
PCM_CODEC(CODEC_ID_PCM_S16LE,   pcm_s16le);
2392
PCM_CODEC(CODEC_ID_PCM_S24BE,   pcm_s24be);
2393
PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2394
PCM_CODEC(CODEC_ID_PCM_S24LE,   pcm_s24le);
2395
PCM_CODEC(CODEC_ID_PCM_S32BE,   pcm_s32be);
2396
PCM_CODEC(CODEC_ID_PCM_S32LE,   pcm_s32le);
2397
PCM_CODEC(CODEC_ID_PCM_U8,      pcm_u8);
2398
PCM_CODEC(CODEC_ID_PCM_U16BE,   pcm_u16be);
2399
PCM_CODEC(CODEC_ID_PCM_U16LE,   pcm_u16le);
2400
PCM_CODEC(CODEC_ID_PCM_U24BE,   pcm_u24be);
2401
PCM_CODEC(CODEC_ID_PCM_U24LE,   pcm_u24le);
2402
PCM_CODEC(CODEC_ID_PCM_U32BE,   pcm_u32be);
2403
PCM_CODEC(CODEC_ID_PCM_U32LE,   pcm_u32le);
2404

    
2405
/* ADPCM codecs */
2406

    
2407
PCM_CODEC(CODEC_ID_ADPCM_4XM,     adpcm_4xm);
2408
PCM_CODEC(CODEC_ID_ADPCM_ADX,     adpcm_adx);
2409
PCM_CODEC(CODEC_ID_ADPCM_CT,      adpcm_ct);
2410
PCM_CODEC(CODEC_ID_ADPCM_EA,      adpcm_ea);
2411
PCM_CODEC(CODEC_ID_ADPCM_G726,    adpcm_g726);
2412
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2413
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2414
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT,  adpcm_ima_qt);
2415
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2416
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS,  adpcm_ima_ws);
2417
PCM_CODEC(CODEC_ID_ADPCM_MS,      adpcm_ms);
2418
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2419
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2420
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2421
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG,  adpcm_ima_smjpeg);
2422
PCM_CODEC(CODEC_ID_ADPCM_SWF,     adpcm_swf);
2423
PCM_CODEC(CODEC_ID_ADPCM_THP,     adpcm_thp);
2424
PCM_CODEC(CODEC_ID_ADPCM_XA,      adpcm_xa);
2425
PCM_CODEC(CODEC_ID_ADPCM_YAMAHA,  adpcm_yamaha);
2426

    
2427
#undef PCM_CODEC
2428

    
2429
/* dummy raw video codec */
2430
extern AVCodec rawvideo_decoder;
2431
extern AVCodec rawvideo_encoder;
2432

    
2433
/* the following codecs use external GPL libs */
2434
extern AVCodec dts_decoder;
2435
extern AVCodec liba52_decoder;
2436

    
2437
/* subtitles */
2438
extern AVCodec dvbsub_decoder;
2439
extern AVCodec dvbsub_encoder;
2440
extern AVCodec dvdsub_decoder;
2441
extern AVCodec dvdsub_encoder;
2442

    
2443
/* resample.c */
2444

    
2445
struct ReSampleContext;
2446
struct AVResampleContext;
2447

    
2448
typedef struct ReSampleContext ReSampleContext;
2449

    
2450
ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2451
                                     int output_rate, int input_rate);
2452
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2453
void audio_resample_close(ReSampleContext *s);
2454

    
2455
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2456
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2457
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2458
void av_resample_close(struct AVResampleContext *c);
2459

    
2460
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
2461
/* YUV420 format is assumed ! */
2462

    
2463
struct ImgReSampleContext attribute_deprecated;
2464

    
2465
typedef struct ImgReSampleContext ImgReSampleContext attribute_deprecated;
2466

    
2467
attribute_deprecated ImgReSampleContext *img_resample_init(int output_width, int output_height,
2468
                                      int input_width, int input_height);
2469

    
2470
attribute_deprecated ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2471
                                      int iwidth, int iheight,
2472
                                      int topBand, int bottomBand,
2473
                                      int leftBand, int rightBand,
2474
                                      int padtop, int padbottom,
2475
                                      int padleft, int padright);
2476

    
2477

    
2478
attribute_deprecated void img_resample(ImgReSampleContext *s,
2479
                  AVPicture *output, const AVPicture *input);
2480

    
2481
attribute_deprecated void img_resample_close(ImgReSampleContext *s);
2482

    
2483
#endif
2484

    
2485
/**
2486
 * Allocate memory for a picture.  Call avpicture_free to free it.
2487
 *
2488
 * @param picture the picture to be filled in
2489
 * @param pix_fmt the format of the picture
2490
 * @param width the width of the picture
2491
 * @param height the height of the picture
2492
 * @return zero if successful, a negative value if not
2493
 */
2494
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2495

    
2496
/**
2497
 * Free a picture previously allocated by avpicture_alloc().
2498
 *
2499
 * @param picture the AVPicture to be freed
2500
 */
2501
void avpicture_free(AVPicture *picture);
2502

    
2503
/**
2504
 * Fill in the AVPicture fields.
2505
 * The fields of the given AVPicture are filled in by using the 'ptr' address
2506
 * which points to the image data buffer. Depending on the specified picture
2507
 * format, one or multiple image data pointers and line sizes will be set.
2508
 * If a planar format is specified, several pointers will be set pointing to
2509
 * the different picture planes and the line sizes of the different planes
2510
 * will be stored in the lines_sizes array.
2511
 *
2512
 * @param picture AVPicture whose fields are to be filled in
2513
 * @param ptr Buffer which will contain or contains the actual image data
2514
 * @param pix_fmt The format in which the picture data is stored.
2515
 * @param width the width of the image in pixels
2516
 * @param height the height of the image in pixels
2517
 * @return size of the image data in bytes
2518
 */
2519
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2520
                   int pix_fmt, int width, int height);
2521
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2522
                     unsigned char *dest, int dest_size);
2523

    
2524
/**
2525
 * Calculate the size in bytes that a picture of the given width and height
2526
 * would occupy if stored in the given picture format.
2527
 *
2528
 * @param pix_fmt the given picture format
2529
 * @param width the width of the image
2530
 * @param height the height of the image
2531
 * @return Image data size in bytes
2532
 */
2533
int avpicture_get_size(int pix_fmt, int width, int height);
2534
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2535
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2536
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2537
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2538
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2539

    
2540
#define FF_LOSS_RESOLUTION  0x0001 /**< loss due to resolution change */
2541
#define FF_LOSS_DEPTH       0x0002 /**< loss due to color depth change */
2542
#define FF_LOSS_COLORSPACE  0x0004 /**< loss due to color space conversion */
2543
#define FF_LOSS_ALPHA       0x0008 /**< loss of alpha bits */
2544
#define FF_LOSS_COLORQUANT  0x0010 /**< loss due to color quantization */
2545
#define FF_LOSS_CHROMA      0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */
2546

    
2547
/**
2548
 * Computes what kind of losses will occur when converting from one specific
2549
 * pixel format to another.
2550
 * When converting from one pixel format to another, information loss may occur.
2551
 * For example, when converting from RGB24 to GRAY, the color information will
2552
 * be lost. Similarly, other losses occur when converting from some formats to
2553
 * other formats. These losses can involve loss of chroma, but also loss of
2554
 * resolution, loss of color depth, loss due to the color space conversion, loss
2555
 * of the alpha bits or loss due to color quantization.
2556
 * avcodec_get_fix_fmt_loss() informs you about the various types of losses
2557
 * which will occur when converting from one pixel format to another.
2558
 *
2559
 * @param[in] dst_pix_fmt destination pixel format
2560
 * @param[in] src_pix_fmt source pixel format
2561
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
2562
 * @return Combination of flags informing you what kind of losses will occur.
2563
 */
2564
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2565
                             int has_alpha);
2566

    
2567
/**
2568
 * Finds the best pixel format to convert to given a certain source pixel
2569
 * format.  When converting from one pixel format to another, information loss
2570
 * may occur.  For example, when converting from RGB24 to GRAY, the color
2571
 * information will be lost. Similarly, other losses occur when converting from
2572
 * some formats to other formats. avcodec_find_best_pix_fmt() searches which of
2573
 * the given pixel formats should be used to suffer the least amount of loss.
2574
 * The pixel formats from which it chooses one, are determined by the
2575
 * \p pix_fmt_mask parameter.
2576
 *
2577
 * @code
2578
 * src_pix_fmt = PIX_FMT_YUV420P;
2579
 * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24);
2580
 * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss);
2581
 * @endcode
2582
 *
2583
 * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from
2584
 * @param[in] src_pix_fmt source pixel format
2585
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
2586
 * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
2587
 * @return The best pixel format to convert to or -1 if none was found.
2588
 */
2589
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2590
                              int has_alpha, int *loss_ptr);
2591

    
2592
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2593
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2594

    
2595
/**
2596
 * Tell if an image really has transparent alpha values.
2597
 * @return ored mask of FF_ALPHA_xxx constants
2598
 */
2599
int img_get_alpha_info(const AVPicture *src,
2600
                       int pix_fmt, int width, int height);
2601

    
2602
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
2603
/* convert among pixel formats */
2604
attribute_deprecated int img_convert(AVPicture *dst, int dst_pix_fmt,
2605
                const AVPicture *src, int pix_fmt,
2606
                int width, int height);
2607
#endif
2608

    
2609
/* deinterlace a picture */
2610
/* deinterlace - if not supported return -1 */
2611
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2612
                          int pix_fmt, int width, int height);
2613

    
2614
/* external high level API */
2615

    
2616
extern AVCodec *first_avcodec;
2617

    
2618
/* returns LIBAVCODEC_VERSION_INT constant */
2619
unsigned avcodec_version(void);
2620
/* returns LIBAVCODEC_BUILD constant */
2621
unsigned avcodec_build(void);
2622

    
2623
/**
2624
 * Initializes libavcodec.
2625
 *
2626
 * @warning This function \e must be called before any other libavcodec
2627
 * function.
2628
 */
2629
void avcodec_init(void);
2630

    
2631
void register_avcodec(AVCodec *format);
2632

    
2633
/**
2634
 * Finds an encoder with a matching codec ID.
2635
 *
2636
 * @param id CodecID of the requested encoder
2637
 * @return An encoder if one was found, NULL otherwise.
2638
 */
2639
AVCodec *avcodec_find_encoder(enum CodecID id);
2640

    
2641
/**
2642
 * Finds an encoder with the specified name.
2643
 *
2644
 * @param name name of the requested encoder
2645
 * @return An encoder if one was found, NULL otherwise.
2646
 */
2647
AVCodec *avcodec_find_encoder_by_name(const char *name);
2648

    
2649
/**
2650
 * Finds a decoder with a matching codec ID.
2651
 *
2652
 * @param id CodecID of the requested decoder
2653
 * @return A decoder if one was found, NULL otherwise.
2654
 */
2655
AVCodec *avcodec_find_decoder(enum CodecID id);
2656

    
2657
/**
2658
 * Finds an decoder with the specified name.
2659
 *
2660
 * @param name name of the requested decoder
2661
 * @return A decoder if one was found, NULL otherwise.
2662
 */
2663
AVCodec *avcodec_find_decoder_by_name(const char *name);
2664
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2665

    
2666
/**
2667
 * Sets the fields of the given AVCodecContext to default values.
2668
 *
2669
 * @param s The AVCodecContext of which the fields should be set to default values.
2670
 */
2671
void avcodec_get_context_defaults(AVCodecContext *s);
2672

    
2673
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
2674
 *  we WILL change its arguments and name a few times! */
2675
void avcodec_get_context_defaults2(AVCodecContext *s, enum CodecType);
2676

    
2677
/**
2678
 * Allocates an AVCodecContext and sets its fields to default values.  The
2679
 * resulting struct can be deallocated by simply calling av_free().
2680
 *
2681
 * @return An AVCodecContext filled with default values or NULL on failure.
2682
 * @see avcodec_get_context_defaults
2683
 */
2684
AVCodecContext *avcodec_alloc_context(void);
2685

    
2686
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
2687
 *  we WILL change its arguments and name a few times! */
2688
AVCodecContext *avcodec_alloc_context2(enum CodecType);
2689

    
2690
/**
2691
 * Sets the fields of the given AVFrame to default values.
2692
 *
2693
 * @param pic The AVFrame of which the fields should be set to default values.
2694
 */
2695
void avcodec_get_frame_defaults(AVFrame *pic);
2696

    
2697
/**
2698
 * Allocates an AVFrame and sets its fields to default values.  The resulting
2699
 * struct can be deallocated by simply calling av_free().
2700
 *
2701
 * @return An AVFrame filled with default values or NULL on failure.
2702
 * @see avcodec_get_frame_defaults
2703
 */
2704
AVFrame *avcodec_alloc_frame(void);
2705

    
2706
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2707
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2708
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2709
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2710

    
2711
/**
2712
 * Checks if the given dimension of a picture is valid, meaning that all
2713
 * bytes of the picture can be addressed with a signed int.
2714
 *
2715
 * @param[in] w Width of the picture.
2716
 * @param[in] h Height of the picture.
2717
 * @return Zero if valid, a negative value if invalid.
2718
 */
2719
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2720
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2721

    
2722
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2723
void avcodec_thread_free(AVCodecContext *s);
2724
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2725
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2726
//FIXME func typedef
2727

    
2728
/**
2729
 * Initializes the AVCodecContext to use the given AVCodec. Prior to using this
2730
 * function the context has to be allocated.
2731
 *
2732
 * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
2733
 * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
2734
 * retrieving a codec.
2735
 *
2736
 * @warning This function is not thread safe!
2737
 *
2738
 * @code
2739
 * codec = avcodec_find_decoder(CODEC_ID_H264);
2740
 * if (!codec)
2741
 *     exit(1);
2742
 *
2743
 * context = avcodec_alloc_context();
2744
 *
2745
 * if (avcodec_open(context, codec) < 0)
2746
 *     exit(1);
2747
 * @endcode
2748
 *
2749
 * @param avctx The context which will be set up to use the given codec.
2750
 * @param codec The codec to use within the context.
2751
 * @return zero on success, a negative value on error
2752
 * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder
2753
 */
2754
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2755

    
2756
/**
2757
 * @deprecated Use avcodec_decode_audio2() instead.
2758
 */
2759
attribute_deprecated int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2760
                         int *frame_size_ptr,
2761
                         uint8_t *buf, int buf_size);
2762

    
2763
/**
2764
 * Decodes an audio frame from \p buf into \p samples.
2765
 * The avcodec_decode_audio2() function decodes an audio frame from the input
2766
 * buffer \p buf of size \p buf_size. To decode it, it makes use of the
2767
 * audio codec which was coupled with \p avctx using avcodec_open(). The
2768
 * resulting decoded frame is stored in output buffer \p samples.  If no frame
2769
 * could be decompressed, \p frame_size_ptr is zero. Otherwise, it is the
2770
 * decompressed frame size in \e bytes.
2771
 *
2772
 * @warning You \e must set \p frame_size_ptr to the allocated size of the
2773
 * output buffer before calling avcodec_decode_audio2().
2774
 *
2775
 * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
2776
 * the actual read bytes because some optimized bitstream readers read 32 or 64
2777
 * bits at once and could read over the end.
2778
 *
2779
 * @warning The end of the input buffer \p buf should be set to 0 to ensure that
2780
 * no overreading happens for damaged MPEG streams.
2781
 *
2782
 * @note You might have to align the input buffer \p buf and output buffer \p
2783
 * samples. The alignment requirements depend on the CPU: On some CPUs it isn't
2784
 * necessary at all, on others it won't work at all if not aligned and on others
2785
 * it will work but it will have an impact on performance. In practice, the
2786
 * bitstream should have 4 byte alignment at minimum and all sample data should
2787
 * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
2788
 * the linesize is not a multiple of 16 then there's no sense in aligning the
2789
 * start of the buffer to 16.
2790
 *
2791
 * @param avctx the codec context
2792
 * @param[out] samples the output buffer
2793
 * @param[in,out] frame_size_ptr the output buffer size in bytes
2794
 * @param[in] buf the input buffer
2795
 * @param[in] buf_size the input buffer size in bytes
2796
 * @return On error a negative value is returned, otherwise the number of bytes
2797
 * used or zero if no frame could be decompressed.
2798
 */
2799
int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
2800
                         int *frame_size_ptr,
2801
                         uint8_t *buf, int buf_size);
2802

    
2803
/**
2804
 * Decodes a video frame from \p buf into \p picture.
2805
 * The avcodec_decode_video() function decodes a video frame from the input
2806
 * buffer \p buf of size \p buf_size. To decode it, it makes use of the
2807
 * video codec which was coupled with \p avctx using avcodec_open(). The
2808
 * resulting decoded frame is stored in \p picture.
2809
 *
2810
 * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
2811
 * the actual read bytes because some optimized bitstream readers read 32 or 64
2812
 * bits at once and could read over the end.
2813
 *
2814
 * @warning The end of the input buffer \p buf should be set to 0 to ensure that
2815
 * no overreading happens for damaged MPEG streams.
2816
 *
2817
 * @note You might have to align the input buffer \p buf and output buffer \p
2818
 * samples. The alignment requirements depend on the CPU: on some CPUs it isn't
2819
 * necessary at all, on others it won't work at all if not aligned and on others
2820
 * it will work but it will have an impact on performance. In practice, the
2821
 * bitstream should have 4 byte alignment at minimum and all sample data should
2822
 * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
2823
 * the linesize is not a multiple of 16 then there's no sense in aligning the
2824
 * start of the buffer to 16.
2825
 *
2826
 * @param avctx the codec context
2827
 * @param[out] picture The AVFrame in which the decoded video frame will be stored.
2828
 * @param[in] buf the input buffer
2829
 * @param[in] buf_size the size of the input buffer in bytes
2830
 * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
2831
 * @return On error a negative value is returned, otherwise the number of bytes
2832
 * used or zero if no frame could be decompressed.
2833
 */
2834
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2835
                         int *got_picture_ptr,
2836
                         uint8_t *buf, int buf_size);
2837

    
2838
/* Decode a subtitle message. Return -1 if error, otherwise return the
2839
 * number of bytes used. If no subtitle could be decompressed,
2840
 * got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
2841
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2842
                            int *got_sub_ptr,
2843
                            const uint8_t *buf, int buf_size);
2844
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2845
                        int *data_size_ptr,
2846
                        uint8_t *buf, int buf_size);
2847

    
2848
/**
2849
 * Encodes an audio frame from \p samples into \p buf.
2850
 * The avcodec_encode_audio() function encodes an audio frame from the input
2851
 * buffer \p samples. To encode it, it makes use of the audio codec which was
2852
 * coupled with \p avctx using avcodec_open(). The resulting encoded frame is
2853
 * stored in output buffer \p buf.
2854
 *
2855
 * @note The output buffer should be at least \c FF_MIN_BUFFER_SIZE bytes large.
2856
 *
2857
 * @param avctx the codec context
2858
 * @param[out] buf the output buffer
2859
 * @param[in] buf_size the output buffer size
2860
 * @param[in] samples the input buffer containing the samples
2861
 * @return On error a negative value is returned, on succes zero or the number
2862
 * of bytes used from the input buffer.
2863
 */
2864
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2865
                         const short *samples);
2866

    
2867
/**
2868
 * Encodes a video frame from \p pict into \p buf.
2869
 * The avcodec_encode_video() function encodes a video frame from the input
2870
 * \p pict. To encode it, it makes use of the video codec which was coupled with
2871
 * \p avctx using avcodec_open(). The resulting encoded bytes representing the
2872
 * frame are stored in the output buffer \p buf. The input picture should be
2873
 * stored using a specific format, namely \c avctx.pix_fmt.
2874
 *
2875
 * @param avctx the codec context
2876
 * @param[out] buf the output buffer for the bitstream of encoded frame
2877
 * @param[in] buf_size the size of the output buffer in bytes
2878
 * @param[in] pict the input picture to encode
2879
 * @return On error a negative value is returned, on success zero or the number
2880
 * of bytes used from the input buffer.
2881
 */
2882
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2883
                         const AVFrame *pict);
2884
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2885
                            const AVSubtitle *sub);
2886

    
2887
int avcodec_close(AVCodecContext *avctx);
2888

    
2889
void avcodec_register_all(void);
2890

    
2891
/**
2892
 * Flush buffers, should be called when seeking or when switching to a different stream.
2893
 */
2894
void avcodec_flush_buffers(AVCodecContext *avctx);
2895

    
2896
void avcodec_default_free_buffers(AVCodecContext *s);
2897

    
2898
/* misc useful functions */
2899

    
2900
/**
2901
 * Returns a single letter to describe the given picture type \p pict_type.
2902
 *
2903
 * @param[in] pict_type the picture type
2904
 * @return A single character representing the picture type.
2905
 */
2906
char av_get_pict_type_char(int pict_type);
2907

    
2908
/**
2909
 * Returns codec bits per sample.
2910
 *
2911
 * @param[in] codec_id the codec
2912
 * @return Number of bits per sample or zero if unknown for the given codec.
2913
 */
2914
int av_get_bits_per_sample(enum CodecID codec_id);
2915

    
2916
/* frame parsing */
2917
typedef struct AVCodecParserContext {
2918
    void *priv_data;
2919
    struct AVCodecParser *parser;
2920
    int64_t frame_offset; /* offset of the current frame */
2921
    int64_t cur_offset; /* current offset
2922
                           (incremented by each av_parser_parse()) */
2923
    int64_t last_frame_offset; /* offset of the last frame */
2924
    /* video info */
2925
    int pict_type; /* XXX: Put it back in AVCodecContext. */
2926
    int repeat_pict; /* XXX: Put it back in AVCodecContext. */
2927
    int64_t pts;     /* pts of the current frame */
2928
    int64_t dts;     /* dts of the current frame */
2929

    
2930
    /* private data */
2931
    int64_t last_pts;
2932
    int64_t last_dts;
2933
    int fetch_timestamp;
2934

    
2935
#define AV_PARSER_PTS_NB 4
2936
    int cur_frame_start_index;
2937
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2938
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2939
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2940

    
2941
    int flags;
2942
#define PARSER_FLAG_COMPLETE_FRAMES           0x0001
2943

    
2944
    int64_t offset;      ///< byte offset from starting packet start
2945
    int64_t last_offset;
2946
} AVCodecParserContext;
2947

    
2948
typedef struct AVCodecParser {
2949
    int codec_ids[5]; /* several codec IDs are permitted */
2950
    int priv_data_size;
2951
    int (*parser_init)(AVCodecParserContext *s);
2952
    int (*parser_parse)(AVCodecParserContext *s,
2953
                        AVCodecContext *avctx,
2954
                        uint8_t **poutbuf, int *poutbuf_size,
2955
                        const uint8_t *buf, int buf_size);
2956
    void (*parser_close)(AVCodecParserContext *s);
2957
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2958
    struct AVCodecParser *next;
2959
} AVCodecParser;
2960

    
2961
extern AVCodecParser *av_first_parser;
2962

    
2963
void av_register_codec_parser(AVCodecParser *parser);
2964
AVCodecParserContext *av_parser_init(int codec_id);
2965
int av_parser_parse(AVCodecParserContext *s,
2966
                    AVCodecContext *avctx,
2967
                    uint8_t **poutbuf, int *poutbuf_size,
2968
                    const uint8_t *buf, int buf_size,
2969
                    int64_t pts, int64_t dts);
2970
int av_parser_change(AVCodecParserContext *s,
2971
                     AVCodecContext *avctx,
2972
                     uint8_t **poutbuf, int *poutbuf_size,
2973
                     const uint8_t *buf, int buf_size, int keyframe);
2974
void av_parser_close(AVCodecParserContext *s);
2975

    
2976
extern AVCodecParser aac_parser;
2977
extern AVCodecParser ac3_parser;
2978
extern AVCodecParser cavsvideo_parser;
2979
extern AVCodecParser dca_parser;
2980
extern AVCodecParser dvbsub_parser;
2981
extern AVCodecParser dvdsub_parser;
2982
extern AVCodecParser h261_parser;
2983
extern AVCodecParser h263_parser;
2984
extern AVCodecParser h264_parser;
2985
extern AVCodecParser mjpeg_parser;
2986
extern AVCodecParser mpeg4video_parser;
2987
extern AVCodecParser mpegaudio_parser;
2988
extern AVCodecParser mpegvideo_parser;
2989
extern AVCodecParser pnm_parser;
2990
extern AVCodecParser vc1_parser;
2991

    
2992

    
2993
typedef struct AVBitStreamFilterContext {
2994
    void *priv_data;
2995
    struct AVBitStreamFilter *filter;
2996
    AVCodecParserContext *parser;
2997
    struct AVBitStreamFilterContext *next;
2998
} AVBitStreamFilterContext;
2999

    
3000

    
3001
typedef struct AVBitStreamFilter {
3002
    const char *name;
3003
    int priv_data_size;
3004
    int (*filter)(AVBitStreamFilterContext *bsfc,
3005
                  AVCodecContext *avctx, const char *args,
3006
                  uint8_t **poutbuf, int *poutbuf_size,
3007
                  const uint8_t *buf, int buf_size, int keyframe);
3008
    struct AVBitStreamFilter *next;
3009
} AVBitStreamFilter;
3010

    
3011
extern AVBitStreamFilter *av_first_bitstream_filter;
3012

    
3013
void av_register_bitstream_filter(AVBitStreamFilter *bsf);
3014
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
3015
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
3016
                               AVCodecContext *avctx, const char *args,
3017
                               uint8_t **poutbuf, int *poutbuf_size,
3018
                               const uint8_t *buf, int buf_size, int keyframe);
3019
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
3020

    
3021
extern AVBitStreamFilter dump_extradata_bsf;
3022
extern AVBitStreamFilter remove_extradata_bsf;
3023
extern AVBitStreamFilter noise_bsf;
3024
extern AVBitStreamFilter mp3_header_compress_bsf;
3025
extern AVBitStreamFilter mp3_header_decompress_bsf;
3026
extern AVBitStreamFilter mjpega_dump_header_bsf;
3027
extern AVBitStreamFilter imx_dump_header_bsf;
3028

    
3029

    
3030
/* memory */
3031

    
3032
/**
3033
 * Reallocates the given block if it is not large enough, otherwise it
3034
 * does nothing.
3035
 *
3036
 * @see av_realloc
3037
 */
3038
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
3039

    
3040
/* for static data only */
3041

    
3042
/**
3043
 * Frees all static arrays and resets their pointers to 0.
3044
 * Call this function to release all statically allocated tables.
3045
 */
3046
attribute_deprecated void av_free_static(void);
3047

    
3048
/**
3049
 * Allocation of static arrays.
3050
 *
3051
 * @warning Do not use for normal allocation.
3052
 *
3053
 * @param[in] size The amount of memory you need in bytes.
3054
 * @return block of memory of the requested size
3055
 */
3056
attribute_deprecated void *av_mallocz_static(unsigned int size);
3057

    
3058
/**
3059
 * Copy image 'src' to 'dst'.
3060
 */
3061
void av_picture_copy(AVPicture *dst, const AVPicture *src,
3062
              int pix_fmt, int width, int height);
3063

    
3064
/**
3065
 * Crop image top and left side.
3066
 */
3067
int av_picture_crop(AVPicture *dst, const AVPicture *src,
3068
             int pix_fmt, int top_band, int left_band);
3069

    
3070
/**
3071
 * Pad image.
3072
 */
3073
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
3074
            int padtop, int padbottom, int padleft, int padright, int *color);
3075

    
3076
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
3077
attribute_deprecated void img_copy(AVPicture *dst, const AVPicture *src,
3078
              int pix_fmt, int width, int height);
3079

    
3080
attribute_deprecated int img_crop(AVPicture *dst, const AVPicture *src,
3081
             int pix_fmt, int top_band, int left_band);
3082

    
3083
attribute_deprecated int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
3084
            int padtop, int padbottom, int padleft, int padright, int *color);
3085
#endif
3086

    
3087
extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
3088

    
3089
/* error handling */
3090
#if EINVAL > 0
3091
#define AVERROR(e) (-(e)) /**< Returns a negative error code from a POSIX error code, to return from library functions. */
3092
#define AVUNERROR(e) (-(e)) /**< Returns a POSIX error code from a library function error return value. */
3093
#else
3094
/* Some platforms have E* and errno already negated. */
3095
#define AVERROR(e) (e)
3096
#define AVUNERROR(e) (e)
3097
#endif
3098
#define AVERROR_UNKNOWN     AVERROR(EINVAL)  /**< unknown error */
3099
#define AVERROR_IO          AVERROR(EIO)     /**< I/O error */
3100
#define AVERROR_NUMEXPECTED AVERROR(EDOM)    /**< Number syntax expected in filename. */
3101
#define AVERROR_INVALIDDATA AVERROR(EINVAL)  /**< invalid data found */
3102
#define AVERROR_NOMEM       AVERROR(ENOMEM)  /**< not enough memory */
3103
#define AVERROR_NOFMT       AVERROR(EILSEQ)  /**< unknown format */
3104
#define AVERROR_NOTSUPP     AVERROR(ENOSYS)  /**< Operation not supported. */
3105

    
3106
#ifdef __cplusplus
3107
}
3108
#endif
3109

    
3110
#endif /* AVCODEC_H */