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/*
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 * copyright (c) 2001 Fabrice Bellard
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 *
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 * This library 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 of the License, or (at your option) any later version.
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 *
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 * This library 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 this library; 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)+(15<<8)+0)
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#define LIBAVCODEC_VERSION      51.15.0
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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_t_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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enum CodecID {
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    CODEC_ID_NONE,
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    CODEC_ID_MPEG1VIDEO,
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    CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 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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    /* 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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    /* 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, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
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    CODEC_ID_AAC,
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    CODEC_ID_MPEG4AAC,
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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,
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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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    /* 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 MPEG2 transport
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                         stream (only used by libavformat) */
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};
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/* CODEC_ID_MP3LAME is absolete */
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#define CODEC_ID_MP3LAME CODEC_ID_MP3
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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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};
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/* currently unused, may be used if 24/32 bits samples ever supported */
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/* all in native endian */
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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 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 initing
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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 H263
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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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/* parent program gurantees that the input for b-frame containing streams is not written to
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   for at least s->max_b_frames+1 frames, if this is not set than 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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#define CODEC_FLAG_H263P_AIC      0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
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#define CODEC_FLAG_AC_PRED        0x01000000 ///< H263 Advanced intra coding / MPEG4 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 ///< H263 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 multiple references per partition
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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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/* Unsupported options :
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 *              Syntax Arithmetic coding (SAC)
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 *              Reference Picture Selection
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 *              Independant Segment Decoding */
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/* /Fx */
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/* codec capabilities */
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#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
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/**
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 * Codec uses get_buffer() for allocating buffers.
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 * direct rendering method 1
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 */
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#define CODEC_CAP_DR1             0x0002
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/* if 'parse_only' field is true, then avcodec_parse_frame() can be
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   used */
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#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) */
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#define CODEC_CAP_HWACCEL         0x0010
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/**
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 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
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 * if this is not set, the codec is guranteed to never be feeded with NULL data
387
 */
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#define CODEC_CAP_DELAY           0x0020
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/**
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 * Codec can be fed a final frame with a smaller size.
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 * This can be used to prevent truncation of the last audio samples.
392
 */
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#define CODEC_CAP_SMALL_LAST_FRAME 0x0040
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//the following defines may change, don't expect compatibility if you use them
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#define MB_TYPE_INTRA4x4   0x0001
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#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
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#define MB_TYPE_INTRA_PCM  0x0004 //FIXME h264 specific
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#define MB_TYPE_16x16      0x0008
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#define MB_TYPE_16x8       0x0010
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#define MB_TYPE_8x16       0x0020
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#define MB_TYPE_8x8        0x0040
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#define MB_TYPE_INTERLACED 0x0080
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#define MB_TYPE_DIRECT2     0x0100 //FIXME
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#define MB_TYPE_ACPRED     0x0200
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#define MB_TYPE_GMC        0x0400
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#define MB_TYPE_SKIP       0x0800
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#define MB_TYPE_P0L0       0x1000
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#define MB_TYPE_P1L0       0x2000
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#define MB_TYPE_P0L1       0x4000
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#define MB_TYPE_P1L1       0x8000
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#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
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#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
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#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
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#define MB_TYPE_QUANT      0x00010000
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#define MB_TYPE_CBP        0x00020000
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//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
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/**
420
 * Pan Scan area.
421
 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
422
 */
423
typedef struct AVPanScan{
424
    /**
425
     * id.
426
     * - encoding: set by user.
427
     * - decoding: set by lavc
428
     */
429
    int id;
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431
    /**
432
     * width and height in 1/16 pel
433
     * - encoding: set by user.
434
     * - decoding: set by lavc
435
     */
436
    int width;
437
    int height;
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439
    /**
440
     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
441
     * - encoding: set by user.
442
     * - decoding: set by lavc
443
     */
444
    int16_t position[3][2];
445
}AVPanScan;
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447
#define FF_COMMON_FRAME \
448
    /**\
449
     * pointer to the picture planes.\
450
     * this might be different from the first allocated byte\
451
     * - encoding: \
452
     * - decoding: \
453
     */\
454
    uint8_t *data[4];\
455
    int linesize[4];\
456
    /**\
457
     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
458
     * this isn't used by lavc unless the default get/release_buffer() is used\
459
     * - encoding: \
460
     * - decoding: \
461
     */\
462
    uint8_t *base[4];\
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    /**\
464
     * 1 -> keyframe, 0-> not\
465
     * - encoding: set by lavc\
466
     * - decoding: set by lavc\
467
     */\
468
    int key_frame;\
469
\
470
    /**\
471
     * picture type of the frame, see ?_TYPE below.\
472
     * - encoding: set by lavc for coded_picture (and set by user for input)\
473
     * - decoding: set by lavc\
474
     */\
475
    int pict_type;\
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\
477
    /**\
478
     * presentation timestamp in time_base units (time when frame should be shown to user)\
479
     * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
480
     * - encoding: MUST be set by user\
481
     * - decoding: set by lavc\
482
     */\
483
    int64_t pts;\
484
\
485
    /**\
486
     * picture number in bitstream order.\
487
     * - encoding: set by\
488
     * - decoding: set by lavc\
489
     */\
490
    int coded_picture_number;\
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    /**\
492
     * picture number in display order.\
493
     * - encoding: set by\
494
     * - decoding: set by lavc\
495
     */\
496
    int display_picture_number;\
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\
498
    /**\
499
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
500
     * - encoding: set by lavc for coded_picture (and set by user for input)\
501
     * - decoding: set by lavc\
502
     */\
503
    int quality; \
504
\
505
    /**\
506
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
507
     * set to INT_MAX if the buffer has not been used yet \
508
     * - encoding: unused\
509
     * - decoding: MUST be set by get_buffer()\
510
     */\
511
    int age;\
512
\
513
    /**\
514
     * is this picture used as reference\
515
     * - encoding: unused\
516
     * - decoding: set by lavc (before get_buffer() call))\
517
     */\
518
    int reference;\
519
\
520
    /**\
521
     * QP table\
522
     * - encoding: unused\
523
     * - decoding: set by lavc\
524
     */\
525
    int8_t *qscale_table;\
526
    /**\
527
     * QP store stride\
528
     * - encoding: unused\
529
     * - decoding: set by lavc\
530
     */\
531
    int qstride;\
532
\
533
    /**\
534
     * mbskip_table[mb]>=1 if MB didnt change\
535
     * stride= mb_width = (width+15)>>4\
536
     * - encoding: unused\
537
     * - decoding: set by lavc\
538
     */\
539
    uint8_t *mbskip_table;\
540
\
541
    /**\
542
     * Motion vector table.\
543
     * @code\
544
     * example:\
545
     * int mv_sample_log2= 4 - motion_subsample_log2;\
546
     * int mb_width= (width+15)>>4;\
547
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
548
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
549
     * @endcode\
550
     * - encoding: set by user\
551
     * - decoding: set by lavc\
552
     */\
553
    int16_t (*motion_val[2])[2];\
554
\
555
    /**\
556
     * Macroblock type table\
557
     * mb_type_base + mb_width + 2\
558
     * - encoding: set by user\
559
     * - decoding: set by lavc\
560
     */\
561
    uint32_t *mb_type;\
562
\
563
    /**\
564
     * log2 of the size of the block which a single vector in motion_val represents: \
565
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
566
     * - encoding: unused\
567
     * - decoding: set by lavc\
568
     */\
569
    uint8_t motion_subsample_log2;\
570
\
571
    /**\
572
     * for some private data of the user\
573
     * - encoding: unused\
574
     * - decoding: set by user\
575
     */\
576
    void *opaque;\
577
\
578
    /**\
579
     * error\
580
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
581
     * - decoding: unused\
582
     */\
583
    uint64_t error[4];\
584
\
585
    /**\
586
     * type of the buffer (to keep track of who has to dealloc data[*])\
587
     * - encoding: set by the one who allocs it\
588
     * - decoding: set by the one who allocs it\
589
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
590
     */\
591
    int type;\
592
    \
593
    /**\
594
     * when decoding, this signal how much the picture must be delayed.\
595
     * extra_delay = repeat_pict / (2*fps)\
596
     * - encoding: unused\
597
     * - decoding: set by lavc\
598
     */\
599
    int repeat_pict;\
600
    \
601
    /**\
602
     * \
603
     */\
604
    int qscale_type;\
605
    \
606
    /**\
607
     * The content of the picture is interlaced.\
608
     * - encoding: set by user\
609
     * - decoding: set by lavc (default 0)\
610
     */\
611
    int interlaced_frame;\
612
    \
613
    /**\
614
     * if the content is interlaced, is top field displayed first.\
615
     * - encoding: set by user\
616
     * - decoding: set by lavc\
617
     */\
618
    int top_field_first;\
619
    \
620
    /**\
621
     * Pan scan.\
622
     * - encoding: set by user\
623
     * - decoding: set by lavc\
624
     */\
625
    AVPanScan *pan_scan;\
626
    \
627
    /**\
628
     * tell user application that palette has changed from previous frame.\
629
     * - encoding: ??? (no palette-enabled encoder yet)\
630
     * - decoding: set by lavc (default 0)\
631
     */\
632
    int palette_has_changed;\
633
    \
634
    /**\
635
     * Codec suggestion on buffer type if != 0\
636
     * - encoding: unused\
637
     * - decoding: set by lavc (before get_buffer() call))\
638
     */\
639
    int buffer_hints;\
640
\
641
    /**\
642
     * DCT coeffitients\
643
     * - encoding: unused\
644
     * - decoding: set by lavc\
645
     */\
646
    short *dct_coeff;\
647
\
648
    /**\
649
     * Motion referece frame index\
650
     * - encoding: set by user\
651
     * - decoding: set by lavc\
652
     */\
653
    int8_t *ref_index[2];
654

    
655
#define FF_QSCALE_TYPE_MPEG1 0
656
#define FF_QSCALE_TYPE_MPEG2 1
657
#define FF_QSCALE_TYPE_H264  2
658

    
659
#define FF_BUFFER_TYPE_INTERNAL 1
660
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
661
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
662
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, don't dealloc anything
663

    
664

    
665
#define FF_I_TYPE 1 // Intra
666
#define FF_P_TYPE 2 // Predicted
667
#define FF_B_TYPE 3 // Bi-dir predicted
668
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
669
#define FF_SI_TYPE 5
670
#define FF_SP_TYPE 6
671

    
672
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
673
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
674
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
675
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
676

    
677
/**
678
 * Audio Video Frame.
679
 */
680
typedef struct AVFrame {
681
    FF_COMMON_FRAME
682
} AVFrame;
683

    
684
#define DEFAULT_FRAME_RATE_BASE 1001000
685

    
686
/**
687
 * main external api structure.
688
 */
689
typedef struct AVCodecContext {
690
    /**
691
     * Info on struct for av_log
692
     * - set by avcodec_alloc_context
693
     */
694
    AVClass *av_class;
695
    /**
696
     * the average bitrate.
697
     * - encoding: set by user. unused for constant quantizer encoding
698
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
699
     */
700
    int bit_rate;
701

    
702
    /**
703
     * number of bits the bitstream is allowed to diverge from the reference.
704
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
705
     * - encoding: set by user. unused for constant quantizer encoding
706
     * - decoding: unused
707
     */
708
    int bit_rate_tolerance;
709

    
710
    /**
711
     * CODEC_FLAG_*.
712
     * - encoding: set by user.
713
     * - decoding: set by user.
714
     */
715
    int flags;
716

    
717
    /**
718
     * some codecs needs additionnal format info. It is stored here
719
     * - encoding: set by user.
720
     * - decoding: set by lavc. (FIXME is this ok?)
721
     */
722
    int sub_id;
723

    
724
    /**
725
     * motion estimation algorithm used for video coding.
726
     * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
727
     * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
728
     * - encoding: MUST be set by user.
729
     * - decoding: unused
730
     */
731
    int me_method;
732

    
733
    /**
734
     * some codecs need / can use extra-data like huffman tables.
735
     * mjpeg: huffman tables
736
     * rv10: additional flags
737
     * mpeg4: global headers (they can be in the bitstream or here)
738
     * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
739
     * then extradata_size to avoid prolems if its read with the bitstream reader
740
     * the bytewise contents of extradata must not depend on the architecture or cpu endianness
741
     * - encoding: set/allocated/freed by lavc.
742
     * - decoding: set/allocated/freed by user.
743
     */
744
    void *extradata;
745
    int extradata_size;
746

    
747
    /**
748
     * this is the fundamental unit of time (in seconds) in terms
749
     * of which frame timestamps are represented. for fixed-fps content,
750
     * timebase should be 1/framerate and timestamp increments should be
751
     * identically 1.
752
     * - encoding: MUST be set by user
753
     * - decoding: set by lavc.
754
     */
755
    AVRational time_base;
756

    
757
    /* video only */
758
    /**
759
     * picture width / height.
760
     * - encoding: MUST be set by user.
761
     * - decoding: set by lavc.
762
     * Note, for compatibility its possible to set this instead of
763
     * coded_width/height before decoding
764
     */
765
    int width, height;
766

    
767
#define FF_ASPECT_EXTENDED 15
768

    
769
    /**
770
     * the number of pictures in a group of pitures, or 0 for intra_only.
771
     * - encoding: set by user.
772
     * - decoding: unused
773
     */
774
    int gop_size;
775

    
776
    /**
777
     * pixel format, see PIX_FMT_xxx.
778
     * - encoding: set by user.
779
     * - decoding: set by lavc.
780
     */
781
    enum PixelFormat pix_fmt;
782

    
783
    /**
784
     * Frame rate emulation. If not zero lower layer (i.e. format handler)
785
     * has to read frames at native frame rate.
786
     * - encoding: set by user.
787
     * - decoding: unused.
788
     */
789
    int rate_emu;
790

    
791
    /**
792
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
793
     * decoder to draw an horizontal band. It improve cache usage. Not
794
     * all codecs can do that. You must check the codec capabilities
795
     * before
796
     * - encoding: unused
797
     * - decoding: set by user.
798
     * @param height the height of the slice
799
     * @param y the y position of the slice
800
     * @param type 1->top field, 2->bottom field, 3->frame
801
     * @param offset offset into the AVFrame.data from which the slice should be read
802
     */
803
    void (*draw_horiz_band)(struct AVCodecContext *s,
804
                            const AVFrame *src, int offset[4],
805
                            int y, int type, int height);
806

    
807
    /* audio only */
808
    int sample_rate; ///< samples per sec
809
    int channels;
810

    
811
    /**
812
     * audio sample format.
813
     * - encoding: set by user.
814
     * - decoding: set by lavc.
815
     */
816
    enum SampleFormat sample_fmt;  ///< sample format, currenly unused
817

    
818
    /* the following data should not be initialized */
819
    /**
820
     * samples per packet. initialized when calling 'init'
821
     */
822
    int frame_size;
823
    int frame_number;   ///< audio or video frame number
824
    int real_pict_num;  ///< returns the real picture number of previous encoded frame
825

    
826
    /**
827
     * number of frames the decoded output will be delayed relative to
828
     * the encoded input.
829
     * - encoding: set by lavc.
830
     * - decoding: unused
831
     */
832
    int delay;
833

    
834
    /* - encoding parameters */
835
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
836
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
837

    
838
    /**
839
     * minimum quantizer.
840
     * - encoding: set by user.
841
     * - decoding: unused
842
     */
843
    int qmin;
844

    
845
    /**
846
     * maximum quantizer.
847
     * - encoding: set by user.
848
     * - decoding: unused
849
     */
850
    int qmax;
851

    
852
    /**
853
     * maximum quantizer difference etween frames.
854
     * - encoding: set by user.
855
     * - decoding: unused
856
     */
857
    int max_qdiff;
858

    
859
    /**
860
     * maximum number of b frames between non b frames.
861
     * note: the output will be delayed by max_b_frames+1 relative to the input
862
     * - encoding: set by user.
863
     * - decoding: unused
864
     */
865
    int max_b_frames;
866

    
867
    /**
868
     * qscale factor between ip and b frames.
869
     * - encoding: set by user.
870
     * - decoding: unused
871
     */
872
    float b_quant_factor;
873

    
874
    /** obsolete FIXME remove */
875
    int rc_strategy;
876
#define FF_RC_STRATEGY_XVID 1
877

    
878
    int b_frame_strategy;
879

    
880
    /**
881
     * hurry up amount.
882
     * deprecated in favor of skip_idct and skip_frame
883
     * - encoding: unused
884
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
885
     */
886
    int hurry_up;
887

    
888
    struct AVCodec *codec;
889

    
890
    void *priv_data;
891

    
892
    /* unused, FIXME remove*/
893
    int rtp_mode;
894

    
895
    int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
896
                            /* do it's best to deliver a chunk with size    */
897
                            /* below rtp_payload_size, the chunk will start */
898
                            /* with a start code on some codecs like H.263  */
899
                            /* This doesn't take account of any particular  */
900
                            /* headers inside the transmited RTP payload    */
901

    
902

    
903
    /* The RTP callback: This function is called   */
904
    /* every time the encoder has a packet to send */
905
    /* Depends on the encoder if the data starts   */
906
    /* with a Start Code (it should) H.263 does.   */
907
    /* mb_nb contains the number of macroblocks    */
908
    /* encoded in the RTP payload                  */
909
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
910

    
911
    /* statistics, used for 2-pass encoding */
912
    int mv_bits;
913
    int header_bits;
914
    int i_tex_bits;
915
    int p_tex_bits;
916
    int i_count;
917
    int p_count;
918
    int skip_count;
919
    int misc_bits;
920

    
921
    /**
922
     * number of bits used for the previously encoded frame.
923
     * - encoding: set by lavc
924
     * - decoding: unused
925
     */
926
    int frame_bits;
927

    
928
    /**
929
     * private data of the user, can be used to carry app specific stuff.
930
     * - encoding: set by user
931
     * - decoding: set by user
932
     */
933
    void *opaque;
934

    
935
    char codec_name[32];
936
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
937
    enum CodecID codec_id; /* see CODEC_ID_xxx */
938

    
939
    /**
940
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
941
     * this is used to workaround some encoder bugs
942
     * - encoding: set by user, if not then the default based on codec_id will be used
943
     * - decoding: set by user, will be converted to upper case by lavc during init
944
     */
945
    unsigned int codec_tag;
946

    
947
    /**
948
     * workaround bugs in encoders which sometimes cannot be detected automatically.
949
     * - encoding: set by user
950
     * - decoding: set by user
951
     */
952
    int workaround_bugs;
953
#define FF_BUG_AUTODETECT       1  ///< autodetection
954
#define FF_BUG_OLD_MSMPEG4      2
955
#define FF_BUG_XVID_ILACE       4
956
#define FF_BUG_UMP4             8
957
#define FF_BUG_NO_PADDING       16
958
#define FF_BUG_AMV              32
959
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
960
#define FF_BUG_QPEL_CHROMA      64
961
#define FF_BUG_STD_QPEL         128
962
#define FF_BUG_QPEL_CHROMA2     256
963
#define FF_BUG_DIRECT_BLOCKSIZE 512
964
#define FF_BUG_EDGE             1024
965
#define FF_BUG_HPEL_CHROMA      2048
966
#define FF_BUG_DC_CLIP          4096
967
#define FF_BUG_MS               8192 ///< workaround various bugs in microsofts broken decoders
968
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
969

    
970
    /**
971
     * luma single coeff elimination threshold.
972
     * - encoding: set by user
973
     * - decoding: unused
974
     */
975
    int luma_elim_threshold;
976

    
977
    /**
978
     * chroma single coeff elimination threshold.
979
     * - encoding: set by user
980
     * - decoding: unused
981
     */
982
    int chroma_elim_threshold;
983

    
984
    /**
985
     * strictly follow the std (MPEG4, ...).
986
     * - encoding: set by user
987
     * - decoding: unused
988
     */
989
    int strict_std_compliance;
990
#define FF_COMPLIANCE_VERY_STRICT   2 ///< strictly conform to a older more strict version of the spec or reference software
991
#define FF_COMPLIANCE_STRICT        1 ///< strictly conform to all the things in the spec no matter what consequences
992
#define FF_COMPLIANCE_NORMAL        0
993
#define FF_COMPLIANCE_INOFFICIAL   -1 ///< allow inofficial extensions
994
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
995

    
996
    /**
997
     * qscale offset between ip and b frames.
998
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
999
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1000
     * - encoding: set by user.
1001
     * - decoding: unused
1002
     */
1003
    float b_quant_offset;
1004

    
1005
    /**
1006
     * error resilience higher values will detect more errors but may missdetect
1007
     * some more or less valid parts as errors.
1008
     * - encoding: unused
1009
     * - decoding: set by user
1010
     */
1011
    int error_resilience;
1012
#define FF_ER_CAREFUL         1
1013
#define FF_ER_COMPLIANT       2
1014
#define FF_ER_AGGRESSIVE      3
1015
#define FF_ER_VERY_AGGRESSIVE 4
1016

    
1017
    /**
1018
     * called at the beginning of each frame to get a buffer for it.
1019
     * if pic.reference is set then the frame will be read later by lavc
1020
     * avcodec_align_dimensions() should be used to find the required width and
1021
     * height, as they normally need to be rounded up to the next multiple of 16
1022
     * - encoding: unused
1023
     * - decoding: set by lavc, user can override
1024
     */
1025
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1026

    
1027
    /**
1028
     * called to release buffers which where allocated with get_buffer.
1029
     * a released buffer can be reused in get_buffer()
1030
     * pic.data[*] must be set to NULL
1031
     * - encoding: unused
1032
     * - decoding: set by lavc, user can override
1033
     */
1034
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1035

    
1036
    /**
1037
     * if 1 the stream has a 1 frame delay during decoding.
1038
     * - encoding: set by lavc
1039
     * - decoding: set by lavc
1040
     */
1041
    int has_b_frames;
1042

    
1043
    /**
1044
     * number of bytes per packet if constant and known or 0
1045
     * used by some WAV based audio codecs
1046
     */
1047
    int block_align;
1048

    
1049
    int parse_only; /* - decoding only: if true, only parsing is done
1050
                       (function avcodec_parse_frame()). The frame
1051
                       data is returned. Only MPEG codecs support this now. */
1052

    
1053
    /**
1054
     * 0-> h263 quant 1-> mpeg quant.
1055
     * - encoding: set by user.
1056
     * - decoding: unused
1057
     */
1058
    int mpeg_quant;
1059

    
1060
    /**
1061
     * pass1 encoding statistics output buffer.
1062
     * - encoding: set by lavc
1063
     * - decoding: unused
1064
     */
1065
    char *stats_out;
1066

    
1067
    /**
1068
     * pass2 encoding statistics input buffer.
1069
     * concatenated stuff from stats_out of pass1 should be placed here
1070
     * - encoding: allocated/set/freed by user
1071
     * - decoding: unused
1072
     */
1073
    char *stats_in;
1074

    
1075
    /**
1076
     * ratecontrol qmin qmax limiting method.
1077
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1078
     * - encoding: set by user.
1079
     * - decoding: unused
1080
     */
1081
    float rc_qsquish;
1082

    
1083
    float rc_qmod_amp;
1084
    int rc_qmod_freq;
1085

    
1086
    /**
1087
     * ratecontrol override, see RcOverride.
1088
     * - encoding: allocated/set/freed by user.
1089
     * - decoding: unused
1090
     */
1091
    RcOverride *rc_override;
1092
    int rc_override_count;
1093

    
1094
    /**
1095
     * rate control equation.
1096
     * - encoding: set by user
1097
     * - decoding: unused
1098
     */
1099
    char *rc_eq;
1100

    
1101
    /**
1102
     * maximum bitrate.
1103
     * - encoding: set by user.
1104
     * - decoding: unused
1105
     */
1106
    int rc_max_rate;
1107

    
1108
    /**
1109
     * minimum bitrate.
1110
     * - encoding: set by user.
1111
     * - decoding: unused
1112
     */
1113
    int rc_min_rate;
1114

    
1115
    /**
1116
     * decoder bitstream buffer size.
1117
     * - encoding: set by user.
1118
     * - decoding: unused
1119
     */
1120
    int rc_buffer_size;
1121
    float rc_buffer_aggressivity;
1122

    
1123
    /**
1124
     * qscale factor between p and i frames.
1125
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1126
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1127
     * - encoding: set by user.
1128
     * - decoding: unused
1129
     */
1130
    float i_quant_factor;
1131

    
1132
    /**
1133
     * qscale offset between p and i frames.
1134
     * - encoding: set by user.
1135
     * - decoding: unused
1136
     */
1137
    float i_quant_offset;
1138

    
1139
    /**
1140
     * initial complexity for pass1 ratecontrol.
1141
     * - encoding: set by user.
1142
     * - decoding: unused
1143
     */
1144
    float rc_initial_cplx;
1145

    
1146
    /**
1147
     * dct algorithm, see FF_DCT_* below.
1148
     * - encoding: set by user
1149
     * - decoding: unused
1150
     */
1151
    int dct_algo;
1152
#define FF_DCT_AUTO    0
1153
#define FF_DCT_FASTINT 1
1154
#define FF_DCT_INT     2
1155
#define FF_DCT_MMX     3
1156
#define FF_DCT_MLIB    4
1157
#define FF_DCT_ALTIVEC 5
1158
#define FF_DCT_FAAN    6
1159

    
1160
    /**
1161
     * luminance masking (0-> disabled).
1162
     * - encoding: set by user
1163
     * - decoding: unused
1164
     */
1165
    float lumi_masking;
1166

    
1167
    /**
1168
     * temporary complexity masking (0-> disabled).
1169
     * - encoding: set by user
1170
     * - decoding: unused
1171
     */
1172
    float temporal_cplx_masking;
1173

    
1174
    /**
1175
     * spatial complexity masking (0-> disabled).
1176
     * - encoding: set by user
1177
     * - decoding: unused
1178
     */
1179
    float spatial_cplx_masking;
1180

    
1181
    /**
1182
     * p block masking (0-> disabled).
1183
     * - encoding: set by user
1184
     * - decoding: unused
1185
     */
1186
    float p_masking;
1187

    
1188
    /**
1189
     * darkness masking (0-> disabled).
1190
     * - encoding: set by user
1191
     * - decoding: unused
1192
     */
1193
    float dark_masking;
1194

    
1195

    
1196
    /* for binary compatibility */
1197
    int unused;
1198

    
1199
    /**
1200
     * idct algorithm, see FF_IDCT_* below.
1201
     * - encoding: set by user
1202
     * - decoding: set by user
1203
     */
1204
    int idct_algo;
1205
#define FF_IDCT_AUTO         0
1206
#define FF_IDCT_INT          1
1207
#define FF_IDCT_SIMPLE       2
1208
#define FF_IDCT_SIMPLEMMX    3
1209
#define FF_IDCT_LIBMPEG2MMX  4
1210
#define FF_IDCT_PS2          5
1211
#define FF_IDCT_MLIB         6
1212
#define FF_IDCT_ARM          7
1213
#define FF_IDCT_ALTIVEC      8
1214
#define FF_IDCT_SH4          9
1215
#define FF_IDCT_SIMPLEARM    10
1216
#define FF_IDCT_H264         11
1217
#define FF_IDCT_VP3          12
1218
#define FF_IDCT_IPP          13
1219
#define FF_IDCT_XVIDMMX      14
1220
#define FF_IDCT_CAVS         15
1221
#define FF_IDCT_SIMPLEARMV5TE 16
1222

    
1223
    /**
1224
     * slice count.
1225
     * - encoding: set by lavc
1226
     * - decoding: set by user (or 0)
1227
     */
1228
    int slice_count;
1229
    /**
1230
     * slice offsets in the frame in bytes.
1231
     * - encoding: set/allocated by lavc
1232
     * - decoding: set/allocated by user (or NULL)
1233
     */
1234
    int *slice_offset;
1235

    
1236
    /**
1237
     * error concealment flags.
1238
     * - encoding: unused
1239
     * - decoding: set by user
1240
     */
1241
    int error_concealment;
1242
#define FF_EC_GUESS_MVS   1
1243
#define FF_EC_DEBLOCK     2
1244

    
1245
    /**
1246
     * dsp_mask could be add used to disable unwanted CPU features
1247
     * CPU features (i.e. MMX, SSE. ...)
1248
     *
1249
     * with FORCE flag you may instead enable given CPU features
1250
     * (Dangerous: usable in case of misdetection, improper usage however will
1251
     * result into program crash)
1252
     */
1253
    unsigned dsp_mask;
1254
#define FF_MM_FORCE    0x80000000 /* force usage of selected flags (OR) */
1255
    /* lower 16 bits - CPU features */
1256
#ifdef HAVE_MMX
1257
#define FF_MM_MMX      0x0001 /* standard MMX */
1258
#define FF_MM_3DNOW    0x0004 /* AMD 3DNOW */
1259
#define FF_MM_MMXEXT   0x0002 /* SSE integer functions or AMD MMX ext */
1260
#define FF_MM_SSE      0x0008 /* SSE functions */
1261
#define FF_MM_SSE2     0x0010 /* PIV SSE2 functions */
1262
#define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1263
#endif /* HAVE_MMX */
1264
#ifdef HAVE_IWMMXT
1265
#define FF_MM_IWMMXT   0x0100 /* XScale IWMMXT */
1266
#endif /* HAVE_IWMMXT */
1267

    
1268
    /**
1269
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1270
     * - encoding: set by lavc
1271
     * - decoding: set by user
1272
     */
1273
     int bits_per_sample;
1274

    
1275
    /**
1276
     * prediction method (needed for huffyuv).
1277
     * - encoding: set by user
1278
     * - decoding: unused
1279
     */
1280
     int prediction_method;
1281
#define FF_PRED_LEFT   0
1282
#define FF_PRED_PLANE  1
1283
#define FF_PRED_MEDIAN 2
1284

    
1285
    /**
1286
     * sample aspect ratio (0 if unknown).
1287
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1288
     * - encoding: set by user.
1289
     * - decoding: set by lavc.
1290
     */
1291
    AVRational sample_aspect_ratio;
1292

    
1293
    /**
1294
     * the picture in the bitstream.
1295
     * - encoding: set by lavc
1296
     * - decoding: set by lavc
1297
     */
1298
    AVFrame *coded_frame;
1299

    
1300
    /**
1301
     * debug.
1302
     * - encoding: set by user.
1303
     * - decoding: set by user.
1304
     */
1305
    int debug;
1306
#define FF_DEBUG_PICT_INFO 1
1307
#define FF_DEBUG_RC        2
1308
#define FF_DEBUG_BITSTREAM 4
1309
#define FF_DEBUG_MB_TYPE   8
1310
#define FF_DEBUG_QP        16
1311
#define FF_DEBUG_MV        32
1312
#define FF_DEBUG_DCT_COEFF 0x00000040
1313
#define FF_DEBUG_SKIP      0x00000080
1314
#define FF_DEBUG_STARTCODE 0x00000100
1315
#define FF_DEBUG_PTS       0x00000200
1316
#define FF_DEBUG_ER        0x00000400
1317
#define FF_DEBUG_MMCO      0x00000800
1318
#define FF_DEBUG_BUGS      0x00001000
1319
#define FF_DEBUG_VIS_QP    0x00002000
1320
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1321

    
1322
    /**
1323
     * debug.
1324
     * - encoding: set by user.
1325
     * - decoding: set by user.
1326
     */
1327
    int debug_mv;
1328
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1329
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1330
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1331

    
1332
    /**
1333
     * error.
1334
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1335
     * - decoding: unused
1336
     */
1337
    uint64_t error[4];
1338

    
1339
    /**
1340
     * minimum MB quantizer.
1341
     * - encoding: unused
1342
     * - decoding: unused
1343
     */
1344
    int mb_qmin;
1345

    
1346
    /**
1347
     * maximum MB quantizer.
1348
     * - encoding: unused
1349
     * - decoding: unused
1350
     */
1351
    int mb_qmax;
1352

    
1353
    /**
1354
     * motion estimation compare function.
1355
     * - encoding: set by user.
1356
     * - decoding: unused
1357
     */
1358
    int me_cmp;
1359
    /**
1360
     * subpixel motion estimation compare function.
1361
     * - encoding: set by user.
1362
     * - decoding: unused
1363
     */
1364
    int me_sub_cmp;
1365
    /**
1366
     * macroblock compare function (not supported yet).
1367
     * - encoding: set by user.
1368
     * - decoding: unused
1369
     */
1370
    int mb_cmp;
1371
    /**
1372
     * interlaced dct compare function
1373
     * - encoding: set by user.
1374
     * - decoding: unused
1375
     */
1376
    int ildct_cmp;
1377
#define FF_CMP_SAD  0
1378
#define FF_CMP_SSE  1
1379
#define FF_CMP_SATD 2
1380
#define FF_CMP_DCT  3
1381
#define FF_CMP_PSNR 4
1382
#define FF_CMP_BIT  5
1383
#define FF_CMP_RD   6
1384
#define FF_CMP_ZERO 7
1385
#define FF_CMP_VSAD 8
1386
#define FF_CMP_VSSE 9
1387
#define FF_CMP_NSSE 10
1388
#define FF_CMP_W53  11
1389
#define FF_CMP_W97  12
1390
#define FF_CMP_DCTMAX 13
1391
#define FF_CMP_DCT264 14
1392
#define FF_CMP_CHROMA 256
1393

    
1394
    /**
1395
     * ME diamond size & shape.
1396
     * - encoding: set by user.
1397
     * - decoding: unused
1398
     */
1399
    int dia_size;
1400

    
1401
    /**
1402
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1403
     * - encoding: set by user.
1404
     * - decoding: unused
1405
     */
1406
    int last_predictor_count;
1407

    
1408
    /**
1409
     * pre pass for motion estimation.
1410
     * - encoding: set by user.
1411
     * - decoding: unused
1412
     */
1413
    int pre_me;
1414

    
1415
    /**
1416
     * motion estimation pre pass compare function.
1417
     * - encoding: set by user.
1418
     * - decoding: unused
1419
     */
1420
    int me_pre_cmp;
1421

    
1422
    /**
1423
     * ME pre pass diamond size & shape.
1424
     * - encoding: set by user.
1425
     * - decoding: unused
1426
     */
1427
    int pre_dia_size;
1428

    
1429
    /**
1430
     * subpel ME quality.
1431
     * - encoding: set by user.
1432
     * - decoding: unused
1433
     */
1434
    int me_subpel_quality;
1435

    
1436
    /**
1437
     * callback to negotiate the pixelFormat.
1438
     * @param fmt is the list of formats which are supported by the codec,
1439
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1440
     * the first is allways the native one
1441
     * @return the choosen format
1442
     * - encoding: unused
1443
     * - decoding: set by user, if not set then the native format will always be choosen
1444
     */
1445
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1446

    
1447
    /**
1448
     * DTG active format information (additionnal aspect ratio
1449
     * information only used in DVB MPEG2 transport streams). 0 if
1450
     * not set.
1451
     *
1452
     * - encoding: unused.
1453
     * - decoding: set by decoder
1454
     */
1455
    int dtg_active_format;
1456
#define FF_DTG_AFD_SAME         8
1457
#define FF_DTG_AFD_4_3          9
1458
#define FF_DTG_AFD_16_9         10
1459
#define FF_DTG_AFD_14_9         11
1460
#define FF_DTG_AFD_4_3_SP_14_9  13
1461
#define FF_DTG_AFD_16_9_SP_14_9 14
1462
#define FF_DTG_AFD_SP_4_3       15
1463

    
1464
    /**
1465
     * Maximum motion estimation search range in subpel units.
1466
     * if 0 then no limit
1467
     *
1468
     * - encoding: set by user.
1469
     * - decoding: unused.
1470
     */
1471
    int me_range;
1472

    
1473
    /**
1474
     * intra quantizer bias.
1475
     * - encoding: set by user.
1476
     * - decoding: unused
1477
     */
1478
    int intra_quant_bias;
1479
#define FF_DEFAULT_QUANT_BIAS 999999
1480

    
1481
    /**
1482
     * inter quantizer bias.
1483
     * - encoding: set by user.
1484
     * - decoding: unused
1485
     */
1486
    int inter_quant_bias;
1487

    
1488
    /**
1489
     * color table ID.
1490
     * - encoding: unused.
1491
     * - decoding: which clrtable should be used for 8bit RGB images
1492
     *             table have to be stored somewhere FIXME
1493
     */
1494
    int color_table_id;
1495

    
1496
    /**
1497
     * internal_buffer count.
1498
     * Don't touch, used by lavc default_get_buffer()
1499
     */
1500
    int internal_buffer_count;
1501

    
1502
    /**
1503
     * internal_buffers.
1504
     * Don't touch, used by lavc default_get_buffer()
1505
     */
1506
    void *internal_buffer;
1507

    
1508
#define FF_LAMBDA_SHIFT 7
1509
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1510
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1511
#define FF_LAMBDA_MAX (256*128-1)
1512

    
1513
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1514
    /**
1515
     * global quality for codecs which cannot change it per frame.
1516
     * this should be proportional to MPEG1/2/4 qscale.
1517
     * - encoding: set by user.
1518
     * - decoding: unused
1519
     */
1520
    int global_quality;
1521

    
1522
#define FF_CODER_TYPE_VLC   0
1523
#define FF_CODER_TYPE_AC    1
1524
    /**
1525
     * coder type
1526
     * - encoding: set by user.
1527
     * - decoding: unused
1528
     */
1529
    int coder_type;
1530

    
1531
    /**
1532
     * context model
1533
     * - encoding: set by user.
1534
     * - decoding: unused
1535
     */
1536
    int context_model;
1537
#if 0
1538
    /**
1539
     *
1540
     * - encoding: unused
1541
     * - decoding: set by user.
1542
     */
1543
    uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1544
#endif
1545

    
1546
    /**
1547
     * slice flags
1548
     * - encoding: unused
1549
     * - decoding: set by user.
1550
     */
1551
    int slice_flags;
1552
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1553
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1554
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1555

    
1556
    /**
1557
     * XVideo Motion Acceleration
1558
     * - encoding: forbidden
1559
     * - decoding: set by decoder
1560
     */
1561
    int xvmc_acceleration;
1562

    
1563
    /**
1564
     * macroblock decision mode
1565
     * - encoding: set by user.
1566
     * - decoding: unused
1567
     */
1568
    int mb_decision;
1569
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1570
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1571
#define FF_MB_DECISION_RD     2        ///< rate distoration
1572

    
1573
    /**
1574
     * custom intra quantization matrix
1575
     * - encoding: set by user, can be NULL
1576
     * - decoding: set by lavc
1577
     */
1578
    uint16_t *intra_matrix;
1579

    
1580
    /**
1581
     * custom inter quantization matrix
1582
     * - encoding: set by user, can be NULL
1583
     * - decoding: set by lavc
1584
     */
1585
    uint16_t *inter_matrix;
1586

    
1587
    /**
1588
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1589
     * this is used to workaround some encoder bugs
1590
     * - encoding: unused
1591
     * - decoding: set by user, will be converted to upper case by lavc during init
1592
     */
1593
    unsigned int stream_codec_tag;
1594

    
1595
    /**
1596
     * scene change detection threshold.
1597
     * 0 is default, larger means fewer detected scene changes
1598
     * - encoding: set by user.
1599
     * - decoding: unused
1600
     */
1601
    int scenechange_threshold;
1602

    
1603
    /**
1604
     * minimum lagrange multipler
1605
     * - encoding: set by user.
1606
     * - decoding: unused
1607
     */
1608
    int lmin;
1609

    
1610
    /**
1611
     * maximum lagrange multipler
1612
     * - encoding: set by user.
1613
     * - decoding: unused
1614
     */
1615
    int lmax;
1616

    
1617
    /**
1618
     * Palette control structure
1619
     * - encoding: ??? (no palette-enabled encoder yet)
1620
     * - decoding: set by user.
1621
     */
1622
    struct AVPaletteControl *palctrl;
1623

    
1624
    /**
1625
     * noise reduction strength
1626
     * - encoding: set by user.
1627
     * - decoding: unused
1628
     */
1629
    int noise_reduction;
1630

    
1631
    /**
1632
     * called at the beginning of a frame to get cr buffer for it.
1633
     * buffer type (size, hints) must be the same. lavc won't check it.
1634
     * lavc will pass previous buffer in pic, function should return
1635
     * same buffer or new buffer with old frame "painted" into it.
1636
     * if pic.data[0] == NULL must behave like get_buffer().
1637
     * - encoding: unused
1638
     * - decoding: set by lavc, user can override
1639
     */
1640
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1641

    
1642
    /**
1643
     * number of bits which should be loaded into the rc buffer before decoding starts
1644
     * - encoding: set by user.
1645
     * - decoding: unused
1646
     */
1647
    int rc_initial_buffer_occupancy;
1648

    
1649
    /**
1650
     *
1651
     * - encoding: set by user.
1652
     * - decoding: unused
1653
     */
1654
    int inter_threshold;
1655

    
1656
    /**
1657
     * CODEC_FLAG2_*.
1658
     * - encoding: set by user.
1659
     * - decoding: set by user.
1660
     */
1661
    int flags2;
1662

    
1663
    /**
1664
     * simulates errors in the bitstream to test error concealment.
1665
     * - encoding: set by user.
1666
     * - decoding: unused.
1667
     */
1668
    int error_rate;
1669

    
1670
    /**
1671
     * MP3 antialias algorithm, see FF_AA_* below.
1672
     * - encoding: unused
1673
     * - decoding: set by user
1674
     */
1675
    int antialias_algo;
1676
#define FF_AA_AUTO    0
1677
#define FF_AA_FASTINT 1 //not implemented yet
1678
#define FF_AA_INT     2
1679
#define FF_AA_FLOAT   3
1680
    /**
1681
     * Quantizer noise shaping.
1682
     * - encoding: set by user
1683
     * - decoding: unused
1684
     */
1685
    int quantizer_noise_shaping;
1686

    
1687
    /**
1688
     * Thread count.
1689
     * is used to decide how many independant tasks should be passed to execute()
1690
     * - encoding: set by user
1691
     * - decoding: set by user
1692
     */
1693
    int thread_count;
1694

    
1695
    /**
1696
     * the codec may call this to execute several independant things. it will return only after
1697
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1698
     * default implementation will execute the parts serially
1699
     * @param count the number of things to execute
1700
     * - encoding: set by lavc, user can override
1701
     * - decoding: set by lavc, user can override
1702
     */
1703
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1704

    
1705
    /**
1706
     * Thread opaque.
1707
     * can be used by execute() to store some per AVCodecContext stuff.
1708
     * - encoding: set by execute()
1709
     * - decoding: set by execute()
1710
     */
1711
    void *thread_opaque;
1712

    
1713
    /**
1714
     * Motion estimation threshold. under which no motion estimation is
1715
     * performed, but instead the user specified motion vectors are used
1716
     *
1717
     * - encoding: set by user
1718
     * - decoding: unused
1719
     */
1720
     int me_threshold;
1721

    
1722
    /**
1723
     * Macroblock threshold. under which the user specified macroblock types will be used
1724
     * - encoding: set by user
1725
     * - decoding: unused
1726
     */
1727
     int mb_threshold;
1728

    
1729
    /**
1730
     * precision of the intra dc coefficient - 8.
1731
     * - encoding: set by user
1732
     * - decoding: unused
1733
     */
1734
     int intra_dc_precision;
1735

    
1736
    /**
1737
     * noise vs. sse weight for the nsse comparsion function.
1738
     * - encoding: set by user
1739
     * - decoding: unused
1740
     */
1741
     int nsse_weight;
1742

    
1743
    /**
1744
     * number of macroblock rows at the top which are skipped.
1745
     * - encoding: unused
1746
     * - decoding: set by user
1747
     */
1748
     int skip_top;
1749

    
1750
    /**
1751
     * number of macroblock rows at the bottom which are skipped.
1752
     * - encoding: unused
1753
     * - decoding: set by user
1754
     */
1755
     int skip_bottom;
1756

    
1757
    /**
1758
     * profile
1759
     * - encoding: set by user
1760
     * - decoding: set by lavc
1761
     */
1762
     int profile;
1763
#define FF_PROFILE_UNKNOWN -99
1764

    
1765
    /**
1766
     * level
1767
     * - encoding: set by user
1768
     * - decoding: set by lavc
1769
     */
1770
     int level;
1771
#define FF_LEVEL_UNKNOWN -99
1772

    
1773
    /**
1774
     * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1775
     * - encoding: unused
1776
     * - decoding: set by user
1777
     */
1778
     int lowres;
1779

    
1780
    /**
1781
     * bitsream width / height. may be different from width/height if lowres
1782
     * or other things are used
1783
     * - encoding: unused
1784
     * - decoding: set by user before init if known, codec should override / dynamically change if needed
1785
     */
1786
    int coded_width, coded_height;
1787

    
1788
    /**
1789
     * frame skip threshold
1790
     * - encoding: set by user
1791
     * - decoding: unused
1792
     */
1793
    int frame_skip_threshold;
1794

    
1795
    /**
1796
     * frame skip factor
1797
     * - encoding: set by user
1798
     * - decoding: unused
1799
     */
1800
    int frame_skip_factor;
1801

    
1802
    /**
1803
     * frame skip exponent
1804
     * - encoding: set by user
1805
     * - decoding: unused
1806
     */
1807
    int frame_skip_exp;
1808

    
1809
    /**
1810
     * frame skip comparission function
1811
     * - encoding: set by user.
1812
     * - decoding: unused
1813
     */
1814
    int frame_skip_cmp;
1815

    
1816
    /**
1817
     * border processing masking. raises the quantizer for mbs on the borders
1818
     * of the picture.
1819
     * - encoding: set by user
1820
     * - decoding: unused
1821
     */
1822
    float border_masking;
1823

    
1824
    /**
1825
     * minimum MB lagrange multipler.
1826
     * - encoding: set by user.
1827
     * - decoding: unused
1828
     */
1829
    int mb_lmin;
1830

    
1831
    /**
1832
     * maximum MB lagrange multipler.
1833
     * - encoding: set by user.
1834
     * - decoding: unused
1835
     */
1836
    int mb_lmax;
1837

    
1838
    /**
1839
     *
1840
     * - encoding: set by user.
1841
     * - decoding: unused
1842
     */
1843
    int me_penalty_compensation;
1844

    
1845
    /**
1846
     *
1847
     * - encoding: unused
1848
     * - decoding: set by user.
1849
     */
1850
    enum AVDiscard skip_loop_filter;
1851

    
1852
    /**
1853
     *
1854
     * - encoding: unused
1855
     * - decoding: set by user.
1856
     */
1857
    enum AVDiscard skip_idct;
1858

    
1859
    /**
1860
     *
1861
     * - encoding: unused
1862
     * - decoding: set by user.
1863
     */
1864
    enum AVDiscard skip_frame;
1865

    
1866
    /**
1867
     *
1868
     * - encoding: set by user.
1869
     * - decoding: unused
1870
     */
1871
    int bidir_refine;
1872

    
1873
    /**
1874
     *
1875
     * - encoding: set by user.
1876
     * - decoding: unused
1877
     */
1878
    int brd_scale;
1879

    
1880
    /**
1881
     * constant rate factor - quality-based VBR - values ~correspond to qps
1882
     * - encoding: set by user.
1883
     * - decoding: unused
1884
     */
1885
    int crf;
1886

    
1887
    /**
1888
     * constant quantization parameter rate control method
1889
     * - encoding: set by user.
1890
     * - decoding: unused
1891
     */
1892
    int cqp;
1893

    
1894
    /**
1895
     * minimum gop size
1896
     * - encoding: set by user.
1897
     * - decoding: unused
1898
     */
1899
    int keyint_min;
1900

    
1901
    /**
1902
     * number of reference frames
1903
     * - encoding: set by user.
1904
     * - decoding: unused
1905
     */
1906
    int refs;
1907

    
1908
    /**
1909
     * chroma qp offset from luma
1910
     * - encoding: set by user.
1911
     * - decoding: unused
1912
     */
1913
    int chromaoffset;
1914

    
1915
    /**
1916
     * influences how often b-frames are used
1917
     * - encoding: set by user.
1918
     * - decoding: unused
1919
     */
1920
    int bframebias;
1921

    
1922
    /**
1923
     * trellis RD quantization
1924
     * - encoding: set by user.
1925
     * - decoding: unused
1926
     */
1927
    int trellis;
1928

    
1929
    /**
1930
     * reduce fluctuations in qp (before curve compression)
1931
     * - encoding: set by user.
1932
     * - decoding: unused
1933
     */
1934
    float complexityblur;
1935

    
1936
    /**
1937
     * in-loop deblocking filter alphac0 parameter
1938
     * alpha is in the range -6...6
1939
     * - encoding: set by user.
1940
     * - decoding: unused
1941
     */
1942
    int deblockalpha;
1943

    
1944
    /**
1945
     * in-loop deblocking filter beta parameter
1946
     * beta is in the range -6...6
1947
     * - encoding: set by user.
1948
     * - decoding: unused
1949
     */
1950
    int deblockbeta;
1951

    
1952
    /**
1953
     * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1954
     * - encoding: set by user.
1955
     * - decoding: unused
1956
     */
1957
    int partitions;
1958
#define X264_PART_I4X4 0x001  /* Analyse i4x4 */
1959
#define X264_PART_I8X8 0x002  /* Analyse i8x8 (requires 8x8 transform) */
1960
#define X264_PART_P8X8 0x010  /* Analyse p16x8, p8x16 and p8x8 */
1961
#define X264_PART_P4X4 0x020  /* Analyse p8x4, p4x8, p4x4 */
1962
#define X264_PART_B8X8 0x100  /* Analyse b16x8, b8x16 and b8x8 */
1963

    
1964
    /**
1965
     * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1966
     * - encoding: set by user.
1967
     * - decoding: unused
1968
     */
1969
    int directpred;
1970

    
1971
    /**
1972
     * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
1973
     * - encoding: set by user.
1974
     * - decoding: unused
1975
     */
1976
    int cutoff;
1977

    
1978
    /**
1979
     * multiplied by qscale for each frame and added to scene_change_score
1980
     * - encoding: set by user.
1981
     * - decoding: unused
1982
     */
1983
    int scenechange_factor;
1984

    
1985
    /**
1986
     *
1987
     * note: value depends upon the compare functin used for fullpel ME
1988
     * - encoding: set by user.
1989
     * - decoding: unused
1990
     */
1991
    int mv0_threshold;
1992

    
1993
    /**
1994
     * adjusts sensitivity of b_frame_strategy 1
1995
     * - encoding: set by user.
1996
     * - decoding: unused
1997
     */
1998
    int b_sensitivity;
1999

    
2000
    /**
2001
     * - encoding: set by user.
2002
     * - decoding: unused
2003
     */
2004
    int compression_level;
2005
#define FF_COMPRESSION_DEFAULT -1
2006

    
2007
    /**
2008
     * sets whether to use LPC mode - used by FLAC encoder
2009
     * - encoding: set by user.
2010
     * - decoding: unused.
2011
     */
2012
    int use_lpc;
2013

    
2014
    /**
2015
     * LPC coefficient precision - used by FLAC encoder
2016
     * - encoding: set by user.
2017
     * - decoding: unused.
2018
     */
2019
    int lpc_coeff_precision;
2020

    
2021
    /**
2022
     * - encoding: set by user.
2023
     * - decoding: unused.
2024
     */
2025
    int min_prediction_order;
2026

    
2027
    /**
2028
     * - encoding: set by user.
2029
     * - decoding: unused.
2030
     */
2031
    int max_prediction_order;
2032

    
2033
    /**
2034
     * search method for selecting prediction order
2035
     * - encoding: set by user.
2036
     * - decoding: unused.
2037
     */
2038
    int prediction_order_method;
2039

    
2040
    /**
2041
     * - encoding: set by user.
2042
     * - decoding: unused.
2043
     */
2044
    int min_partition_order;
2045

    
2046
    /**
2047
     * - encoding: set by user.
2048
     * - decoding: unused.
2049
     */
2050
    int max_partition_order;
2051
} AVCodecContext;
2052

    
2053
/**
2054
 * AVCodec.
2055
 */
2056
typedef struct AVCodec {
2057
    const char *name;
2058
    enum CodecType type;
2059
    enum CodecID id;
2060
    int priv_data_size;
2061
    int (*init)(AVCodecContext *);
2062
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2063
    int (*close)(AVCodecContext *);
2064
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2065
                  uint8_t *buf, int buf_size);
2066
    int capabilities;
2067
#if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
2068
    void *dummy; // FIXME remove next time we break binary compatibility
2069
#endif
2070
    struct AVCodec *next;
2071
    void (*flush)(AVCodecContext *);
2072
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2073
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2074
} AVCodec;
2075

    
2076
/**
2077
 * four components are given, that's all.
2078
 * the last component is alpha
2079
 */
2080
typedef struct AVPicture {
2081
    uint8_t *data[4];
2082
    int linesize[4];       ///< number of bytes per line
2083
} AVPicture;
2084

    
2085
/**
2086
 * AVPaletteControl
2087
 * This structure defines a method for communicating palette changes
2088
 * between and demuxer and a decoder.
2089
 */
2090
#define AVPALETTE_SIZE 1024
2091
#define AVPALETTE_COUNT 256
2092
typedef struct AVPaletteControl {
2093

    
2094
    /* demuxer sets this to 1 to indicate the palette has changed;
2095
     * decoder resets to 0 */
2096
    int palette_changed;
2097

    
2098
    /* 4-byte ARGB palette entries, stored in native byte order; note that
2099
     * the individual palette components should be on a 8-bit scale; if
2100
     * the palette data comes from a IBM VGA native format, the component
2101
     * data is probably 6 bits in size and needs to be scaled */
2102
    unsigned int palette[AVPALETTE_COUNT];
2103

    
2104
} AVPaletteControl;
2105

    
2106
typedef struct AVSubtitleRect {
2107
    uint16_t x;
2108
    uint16_t y;
2109
    uint16_t w;
2110
    uint16_t h;
2111
    uint16_t nb_colors;
2112
    int linesize;
2113
    uint32_t *rgba_palette;
2114
    uint8_t *bitmap;
2115
} AVSubtitleRect;
2116

    
2117
typedef struct AVSubtitle {
2118
    uint16_t format; /* 0 = graphics */
2119
    uint32_t start_display_time; /* relative to packet pts, in ms */
2120
    uint32_t end_display_time; /* relative to packet pts, in ms */
2121
    uint32_t num_rects;
2122
    AVSubtitleRect *rects;
2123
} AVSubtitle;
2124

    
2125
extern AVCodec ac3_encoder;
2126
extern AVCodec mp2_encoder;
2127
extern AVCodec mp3lame_encoder;
2128
extern AVCodec oggvorbis_encoder;
2129
extern AVCodec faac_encoder;
2130
extern AVCodec flac_encoder;
2131
extern AVCodec xvid_encoder;
2132
extern AVCodec mpeg1video_encoder;
2133
extern AVCodec mpeg2video_encoder;
2134
extern AVCodec h261_encoder;
2135
extern AVCodec h263_encoder;
2136
extern AVCodec h263p_encoder;
2137
extern AVCodec flv_encoder;
2138
extern AVCodec rv10_encoder;
2139
extern AVCodec rv20_encoder;
2140
extern AVCodec dvvideo_encoder;
2141
extern AVCodec mjpeg_encoder;
2142
extern AVCodec ljpeg_encoder;
2143
extern AVCodec jpegls_encoder;
2144
extern AVCodec png_encoder;
2145
extern AVCodec ppm_encoder;
2146
extern AVCodec pgm_encoder;
2147
extern AVCodec pgmyuv_encoder;
2148
extern AVCodec pbm_encoder;
2149
extern AVCodec pam_encoder;
2150
extern AVCodec mpeg4_encoder;
2151
extern AVCodec msmpeg4v1_encoder;
2152
extern AVCodec msmpeg4v2_encoder;
2153
extern AVCodec msmpeg4v3_encoder;
2154
extern AVCodec wmv1_encoder;
2155
extern AVCodec wmv2_encoder;
2156
extern AVCodec huffyuv_encoder;
2157
extern AVCodec ffvhuff_encoder;
2158
extern AVCodec h264_encoder;
2159
extern AVCodec asv1_encoder;
2160
extern AVCodec asv2_encoder;
2161
extern AVCodec vcr1_encoder;
2162
extern AVCodec ffv1_encoder;
2163
extern AVCodec snow_encoder;
2164
extern AVCodec mdec_encoder;
2165
extern AVCodec zlib_encoder;
2166
extern AVCodec sonic_encoder;
2167
extern AVCodec sonic_ls_encoder;
2168
extern AVCodec svq1_encoder;
2169
extern AVCodec x264_encoder;
2170

    
2171
extern AVCodec h263_decoder;
2172
extern AVCodec h261_decoder;
2173
extern AVCodec mpeg4_decoder;
2174
extern AVCodec msmpeg4v1_decoder;
2175
extern AVCodec msmpeg4v2_decoder;
2176
extern AVCodec msmpeg4v3_decoder;
2177
extern AVCodec wmv1_decoder;
2178
extern AVCodec wmv2_decoder;
2179
extern AVCodec vc1_decoder;
2180
extern AVCodec wmv3_decoder;
2181
extern AVCodec mpeg1video_decoder;
2182
extern AVCodec mpeg2video_decoder;
2183
extern AVCodec mpegvideo_decoder;
2184
extern AVCodec mpeg_xvmc_decoder;
2185
extern AVCodec h263i_decoder;
2186
extern AVCodec flv_decoder;
2187
extern AVCodec rv10_decoder;
2188
extern AVCodec rv20_decoder;
2189
extern AVCodec rv30_decoder;
2190
extern AVCodec rv40_decoder;
2191
extern AVCodec svq1_decoder;
2192
extern AVCodec svq3_decoder;
2193
extern AVCodec dvvideo_decoder;
2194
extern AVCodec wmav1_decoder;
2195
extern AVCodec wmav2_decoder;
2196
extern AVCodec mjpeg_decoder;
2197
extern AVCodec mjpegb_decoder;
2198
extern AVCodec sp5x_decoder;
2199
extern AVCodec png_decoder;
2200
extern AVCodec mp2_decoder;
2201
extern AVCodec mp3_decoder;
2202
extern AVCodec mp3adu_decoder;
2203
extern AVCodec mp3on4_decoder;
2204
extern AVCodec qdm2_decoder;
2205
extern AVCodec cook_decoder;
2206
extern AVCodec truespeech_decoder;
2207
extern AVCodec tta_decoder;
2208
extern AVCodec mace3_decoder;
2209
extern AVCodec mace6_decoder;
2210
extern AVCodec huffyuv_decoder;
2211
extern AVCodec ffvhuff_decoder;
2212
extern AVCodec oggvorbis_decoder;
2213
extern AVCodec cyuv_decoder;
2214
extern AVCodec h264_decoder;
2215
extern AVCodec indeo3_decoder;
2216
extern AVCodec vp3_decoder;
2217
extern AVCodec theora_decoder;
2218
extern AVCodec vp5_decoder;
2219
extern AVCodec vp6_decoder;
2220
extern AVCodec vp6f_decoder;
2221
extern AVCodec amr_nb_decoder;
2222
extern AVCodec amr_nb_encoder;
2223
extern AVCodec amr_wb_encoder;
2224
extern AVCodec amr_wb_decoder;
2225
extern AVCodec aac_decoder;
2226
extern AVCodec mpeg4aac_decoder;
2227
extern AVCodec asv1_decoder;
2228
extern AVCodec asv2_decoder;
2229
extern AVCodec vcr1_decoder;
2230
extern AVCodec cljr_decoder;
2231
extern AVCodec ffv1_decoder;
2232
extern AVCodec snow_decoder;
2233
extern AVCodec fourxm_decoder;
2234
extern AVCodec mdec_decoder;
2235
extern AVCodec roq_decoder;
2236
extern AVCodec interplay_video_decoder;
2237
extern AVCodec xan_wc3_decoder;
2238
extern AVCodec rpza_decoder;
2239
extern AVCodec cinepak_decoder;
2240
extern AVCodec msrle_decoder;
2241
extern AVCodec msvideo1_decoder;
2242
extern AVCodec vqa_decoder;
2243
extern AVCodec idcin_decoder;
2244
extern AVCodec eightbps_decoder;
2245
extern AVCodec smc_decoder;
2246
extern AVCodec flic_decoder;
2247
extern AVCodec vmdvideo_decoder;
2248
extern AVCodec vmdaudio_decoder;
2249
extern AVCodec truemotion1_decoder;
2250
extern AVCodec truemotion2_decoder;
2251
extern AVCodec mszh_decoder;
2252
extern AVCodec zlib_decoder;
2253
extern AVCodec ra_144_decoder;
2254
extern AVCodec ra_288_decoder;
2255
extern AVCodec roq_dpcm_decoder;
2256
extern AVCodec interplay_dpcm_decoder;
2257
extern AVCodec xan_dpcm_decoder;
2258
extern AVCodec sol_dpcm_decoder;
2259
extern AVCodec sonic_decoder;
2260
extern AVCodec qtrle_decoder;
2261
extern AVCodec flac_decoder;
2262
extern AVCodec tscc_decoder;
2263
extern AVCodec cscd_decoder;
2264
extern AVCodec nuv_decoder;
2265
extern AVCodec ulti_decoder;
2266
extern AVCodec qdraw_decoder;
2267
extern AVCodec xl_decoder;
2268
extern AVCodec qpeg_decoder;
2269
extern AVCodec shorten_decoder;
2270
extern AVCodec loco_decoder;
2271
extern AVCodec wnv1_decoder;
2272
extern AVCodec aasc_decoder;
2273
extern AVCodec alac_decoder;
2274
extern AVCodec ws_snd1_decoder;
2275
extern AVCodec indeo2_decoder;
2276
extern AVCodec vorbis_decoder;
2277
extern AVCodec fraps_decoder;
2278
extern AVCodec libgsm_encoder;
2279
extern AVCodec libgsm_decoder;
2280
extern AVCodec bmp_decoder;
2281
extern AVCodec mmvideo_decoder;
2282
extern AVCodec zmbv_decoder;
2283
extern AVCodec avs_decoder;
2284
extern AVCodec smacker_decoder;
2285
extern AVCodec smackaud_decoder;
2286
extern AVCodec kmvc_decoder;
2287
extern AVCodec flashsv_decoder;
2288
extern AVCodec cavs_decoder;
2289
extern AVCodec vmnc_decoder;
2290
extern AVCodec wavpack_decoder;
2291

    
2292
/* pcm codecs */
2293
#define PCM_CODEC(id, name) \
2294
extern AVCodec name ## _decoder; \
2295
extern AVCodec name ## _encoder
2296

    
2297
PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2298
PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2299
PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2300
PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2301
PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2302
PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2303
PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2304
PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2305
PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2306
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2307
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2308
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2309
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2310
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2311
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2312
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2313
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2314

    
2315
/* adpcm codecs */
2316

    
2317
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2318
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2319
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2320
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2321
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2322
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2323
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2324
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2325
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2326
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2327
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2328
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2329
PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2330
PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2331
PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2332
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2333
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2334
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2335

    
2336
#undef PCM_CODEC
2337

    
2338
/* dummy raw video codec */
2339
extern AVCodec rawvideo_encoder;
2340
extern AVCodec rawvideo_decoder;
2341

    
2342
/* the following codecs use external GPL libs */
2343
extern AVCodec ac3_decoder;
2344
extern AVCodec dts_decoder;
2345

    
2346
/* subtitles */
2347
extern AVCodec dvdsub_encoder;
2348
extern AVCodec dvdsub_decoder;
2349
extern AVCodec dvbsub_encoder;
2350
extern AVCodec dvbsub_decoder;
2351

    
2352
/* resample.c */
2353

    
2354
struct ReSampleContext;
2355
struct AVResampleContext;
2356

    
2357
typedef struct ReSampleContext ReSampleContext;
2358

    
2359
ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2360
                                     int output_rate, int input_rate);
2361
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2362
void audio_resample_close(ReSampleContext *s);
2363

    
2364
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2365
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2366
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2367
void av_resample_close(struct AVResampleContext *c);
2368

    
2369
/* YUV420 format is assumed ! */
2370

    
2371
struct ImgReSampleContext;
2372

    
2373
typedef struct ImgReSampleContext ImgReSampleContext;
2374

    
2375
ImgReSampleContext *img_resample_init(int output_width, int output_height,
2376
                                      int input_width, int input_height);
2377

    
2378
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2379
                                      int iwidth, int iheight,
2380
                                      int topBand, int bottomBand,
2381
                                      int leftBand, int rightBand,
2382
                                      int padtop, int padbottom,
2383
                                      int padleft, int padright);
2384

    
2385

    
2386
void img_resample(ImgReSampleContext *s,
2387
                  AVPicture *output, const AVPicture *input);
2388

    
2389
void img_resample_close(ImgReSampleContext *s);
2390

    
2391
/**
2392
 * Allocate memory for a picture.  Call avpicture_free to free it.
2393
 *
2394
 * @param picture the picture to be filled in.
2395
 * @param pix_fmt the format of the picture.
2396
 * @param width the width of the picture.
2397
 * @param height the height of the picture.
2398
 * @return 0 if successful, -1 if not.
2399
 */
2400
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2401

    
2402
/* Free a picture previously allocated by avpicture_alloc. */
2403
void avpicture_free(AVPicture *picture);
2404

    
2405
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2406
                   int pix_fmt, int width, int height);
2407
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2408
                     unsigned char *dest, int dest_size);
2409
int avpicture_get_size(int pix_fmt, int width, int height);
2410
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2411
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2412
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2413
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2414
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2415

    
2416
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
2417
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
2418
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
2419
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
2420
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
2421
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2422

    
2423
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2424
                             int has_alpha);
2425
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2426
                              int has_alpha, int *loss_ptr);
2427

    
2428
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2429
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2430
int img_get_alpha_info(const AVPicture *src,
2431
                       int pix_fmt, int width, int height);
2432

    
2433
/* convert among pixel formats */
2434
int img_convert(AVPicture *dst, int dst_pix_fmt,
2435
                const AVPicture *src, int pix_fmt,
2436
                int width, int height);
2437

    
2438
/* deinterlace a picture */
2439
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2440
                          int pix_fmt, int width, int height);
2441

    
2442
/* external high level API */
2443

    
2444
extern AVCodec *first_avcodec;
2445

    
2446
/* returns LIBAVCODEC_VERSION_INT constant */
2447
unsigned avcodec_version(void);
2448
/* returns LIBAVCODEC_BUILD constant */
2449
unsigned avcodec_build(void);
2450
void avcodec_init(void);
2451

    
2452
void register_avcodec(AVCodec *format);
2453
AVCodec *avcodec_find_encoder(enum CodecID id);
2454
AVCodec *avcodec_find_encoder_by_name(const char *name);
2455
AVCodec *avcodec_find_decoder(enum CodecID id);
2456
AVCodec *avcodec_find_decoder_by_name(const char *name);
2457
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2458

    
2459
void avcodec_get_context_defaults(AVCodecContext *s);
2460
AVCodecContext *avcodec_alloc_context(void);
2461
void avcodec_get_frame_defaults(AVFrame *pic);
2462
AVFrame *avcodec_alloc_frame(void);
2463

    
2464
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2465
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2466
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2467
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2468
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2469
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2470

    
2471
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2472
void avcodec_thread_free(AVCodecContext *s);
2473
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2474
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2475
//FIXME func typedef
2476

    
2477
/**
2478
 * opens / inits the AVCodecContext.
2479
 * not thread save!
2480
 */
2481
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2482

    
2483
/**
2484
 * Decode an audio frame.
2485
 *
2486
 * @param avctx the codec context.
2487
 * @param samples output buffer, 16 byte aligned
2488
 * @param frame_size_ptr the output buffer size in bytes, zero if no frame could be compressed
2489
 * @param buf input buffer, 16 byte aligned
2490
 * @param buf_size the input buffer size
2491
 * @return 0 if successful, -1 if not.
2492
 */
2493

    
2494
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2495
                         int *frame_size_ptr,
2496
                         uint8_t *buf, int buf_size);
2497
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2498
                         int *got_picture_ptr,
2499
                         uint8_t *buf, int buf_size);
2500
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2501
                            int *got_sub_ptr,
2502
                            const uint8_t *buf, int buf_size);
2503
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2504
                        int *data_size_ptr,
2505
                        uint8_t *buf, int buf_size);
2506
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2507
                         const short *samples);
2508
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2509
                         const AVFrame *pict);
2510
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2511
                            const AVSubtitle *sub);
2512

    
2513
int avcodec_close(AVCodecContext *avctx);
2514

    
2515
void avcodec_register_all(void);
2516

    
2517
void avcodec_flush_buffers(AVCodecContext *avctx);
2518

    
2519
void avcodec_default_free_buffers(AVCodecContext *s);
2520

    
2521
/* misc usefull functions */
2522

    
2523
/**
2524
 * returns a single letter to describe the picture type
2525
 */
2526
char av_get_pict_type_char(int pict_type);
2527

    
2528
/**
2529
 * returns codec bits per sample
2530
 */
2531
int av_get_bits_per_sample(enum CodecID codec_id);
2532

    
2533
/* frame parsing */
2534
typedef struct AVCodecParserContext {
2535
    void *priv_data;
2536
    struct AVCodecParser *parser;
2537
    int64_t frame_offset; /* offset of the current frame */
2538
    int64_t cur_offset; /* current offset
2539
                           (incremented by each av_parser_parse()) */
2540
    int64_t last_frame_offset; /* offset of the last frame */
2541
    /* video info */
2542
    int pict_type; /* XXX: put it back in AVCodecContext */
2543
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2544
    int64_t pts;     /* pts of the current frame */
2545
    int64_t dts;     /* dts of the current frame */
2546

    
2547
    /* private data */
2548
    int64_t last_pts;
2549
    int64_t last_dts;
2550
    int fetch_timestamp;
2551

    
2552
#define AV_PARSER_PTS_NB 4
2553
    int cur_frame_start_index;
2554
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2555
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2556
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2557

    
2558
    int flags;
2559
#define PARSER_FLAG_COMPLETE_FRAMES           0x0001
2560
} AVCodecParserContext;
2561

    
2562
typedef struct AVCodecParser {
2563
    int codec_ids[5]; /* several codec IDs are permitted */
2564
    int priv_data_size;
2565
    int (*parser_init)(AVCodecParserContext *s);
2566
    int (*parser_parse)(AVCodecParserContext *s,
2567
                        AVCodecContext *avctx,
2568
                        uint8_t **poutbuf, int *poutbuf_size,
2569
                        const uint8_t *buf, int buf_size);
2570
    void (*parser_close)(AVCodecParserContext *s);
2571
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2572
    struct AVCodecParser *next;
2573
} AVCodecParser;
2574

    
2575
extern AVCodecParser *av_first_parser;
2576

    
2577
void av_register_codec_parser(AVCodecParser *parser);
2578
AVCodecParserContext *av_parser_init(int codec_id);
2579
int av_parser_parse(AVCodecParserContext *s,
2580
                    AVCodecContext *avctx,
2581
                    uint8_t **poutbuf, int *poutbuf_size,
2582
                    const uint8_t *buf, int buf_size,
2583
                    int64_t pts, int64_t dts);
2584
int av_parser_change(AVCodecParserContext *s,
2585
                     AVCodecContext *avctx,
2586
                     uint8_t **poutbuf, int *poutbuf_size,
2587
                     const uint8_t *buf, int buf_size, int keyframe);
2588
void av_parser_close(AVCodecParserContext *s);
2589

    
2590
extern AVCodecParser mpegvideo_parser;
2591
extern AVCodecParser mpeg4video_parser;
2592
extern AVCodecParser cavsvideo_parser;
2593
extern AVCodecParser h261_parser;
2594
extern AVCodecParser h263_parser;
2595
extern AVCodecParser h264_parser;
2596
extern AVCodecParser mjpeg_parser;
2597
extern AVCodecParser pnm_parser;
2598
extern AVCodecParser mpegaudio_parser;
2599
extern AVCodecParser ac3_parser;
2600
extern AVCodecParser dvdsub_parser;
2601
extern AVCodecParser dvbsub_parser;
2602
extern AVCodecParser aac_parser;
2603

    
2604

    
2605
typedef struct AVBitStreamFilterContext {
2606
    void *priv_data;
2607
    struct AVBitStreamFilter *filter;
2608
    AVCodecParserContext *parser;
2609
    struct AVBitStreamFilterContext *next;
2610
} AVBitStreamFilterContext;
2611

    
2612

    
2613
typedef struct AVBitStreamFilter {
2614
    const char *name;
2615
    int priv_data_size;
2616
    int (*filter)(AVBitStreamFilterContext *bsfc,
2617
                  AVCodecContext *avctx, const char *args,
2618
                  uint8_t **poutbuf, int *poutbuf_size,
2619
                  const uint8_t *buf, int buf_size, int keyframe);
2620
    struct AVBitStreamFilter *next;
2621
} AVBitStreamFilter;
2622

    
2623
extern AVBitStreamFilter *av_first_bitstream_filter;
2624

    
2625
void av_register_bitstream_filter(AVBitStreamFilter *bsf);
2626
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
2627
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
2628
                               AVCodecContext *avctx, const char *args,
2629
                               uint8_t **poutbuf, int *poutbuf_size,
2630
                               const uint8_t *buf, int buf_size, int keyframe);
2631
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
2632

    
2633
extern AVBitStreamFilter dump_extradata_bsf;
2634
extern AVBitStreamFilter remove_extradata_bsf;
2635
extern AVBitStreamFilter noise_bsf;
2636

    
2637

    
2638
/* memory */
2639
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2640
/* for static data only */
2641
/* call av_free_static to release all staticaly allocated tables */
2642
void av_free_static(void);
2643
void *av_mallocz_static(unsigned int size);
2644
void *av_realloc_static(void *ptr, unsigned int size);
2645

    
2646
void img_copy(AVPicture *dst, const AVPicture *src,
2647
              int pix_fmt, int width, int height);
2648

    
2649
int img_crop(AVPicture *dst, const AVPicture *src,
2650
             int pix_fmt, int top_band, int left_band);
2651

    
2652
int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
2653
            int padtop, int padbottom, int padleft, int padright, int *color);
2654

    
2655
/* endian macros */
2656
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2657
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2658
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2659
                   (((uint8_t*)(x))[1] << 16) | \
2660
                   (((uint8_t*)(x))[2] << 8) | \
2661
                    ((uint8_t*)(x))[3])
2662
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2663
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2664
                   (((uint8_t*)(x))[2] << 16) | \
2665
                   (((uint8_t*)(x))[1] << 8) | \
2666
                    ((uint8_t*)(x))[0])
2667
#endif
2668

    
2669
extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2670

    
2671
#ifdef __cplusplus
2672
}
2673
#endif
2674

    
2675
#endif /* AVCODEC_H */