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/*
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 * copyright (c) 2001 Fabrice Bellard
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#ifndef AVCODEC_H
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#define AVCODEC_H
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/**
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 * @file avcodec.h
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 * external api header.
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 */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "avutil.h"
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#include <sys/types.h> /* size_t */
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#define AV_STRINGIFY(s)         AV_TOSTRING(s)
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#define AV_TOSTRING(s) #s
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#define LIBAVCODEC_VERSION_INT  ((51<<16)+(21<<8)+0)
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#define LIBAVCODEC_VERSION      51.21.0
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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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    CODEC_ID_TARGA,
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    CODEC_ID_DSICINVIDEO,
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    CODEC_ID_TIERTEXSEQVIDEO,
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    CODEC_ID_TIFF,
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    CODEC_ID_GIF,
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    /* 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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    CODEC_ID_DSICINAUDIO,
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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
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 */
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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.
400
 */
401
#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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/**
428
 * Pan Scan area.
429
 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
430
 */
431
typedef struct AVPanScan{
432
    /**
433
     * id.
434
     * - encoding: set by user.
435
     * - decoding: set by lavc
436
     */
437
    int id;
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439
    /**
440
     * width and height in 1/16 pel
441
     * - encoding: set by user.
442
     * - decoding: set by lavc
443
     */
444
    int width;
445
    int height;
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447
    /**
448
     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
449
     * - encoding: set by user.
450
     * - decoding: set by lavc
451
     */
452
    int16_t position[3][2];
453
}AVPanScan;
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455
#define FF_COMMON_FRAME \
456
    /**\
457
     * pointer to the picture planes.\
458
     * this might be different from the first allocated byte\
459
     * - encoding: \
460
     * - decoding: \
461
     */\
462
    uint8_t *data[4];\
463
    int linesize[4];\
464
    /**\
465
     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
466
     * this isn't used by lavc unless the default get/release_buffer() is used\
467
     * - encoding: \
468
     * - decoding: \
469
     */\
470
    uint8_t *base[4];\
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    /**\
472
     * 1 -> keyframe, 0-> not\
473
     * - encoding: set by lavc\
474
     * - decoding: set by lavc\
475
     */\
476
    int key_frame;\
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\
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    /**\
479
     * picture type of the frame, see ?_TYPE below.\
480
     * - encoding: set by lavc for coded_picture (and set by user for input)\
481
     * - decoding: set by lavc\
482
     */\
483
    int pict_type;\
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\
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    /**\
486
     * presentation timestamp in time_base units (time when frame should be shown to user)\
487
     * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
488
     * - encoding: MUST be set by user\
489
     * - decoding: set by lavc\
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     */\
491
    int64_t pts;\
492
\
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    /**\
494
     * picture number in bitstream order.\
495
     * - encoding: set by\
496
     * - decoding: set by lavc\
497
     */\
498
    int coded_picture_number;\
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    /**\
500
     * picture number in display order.\
501
     * - encoding: set by\
502
     * - decoding: set by lavc\
503
     */\
504
    int display_picture_number;\
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\
506
    /**\
507
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
508
     * - encoding: set by lavc for coded_picture (and set by user for input)\
509
     * - decoding: set by lavc\
510
     */\
511
    int quality; \
512
\
513
    /**\
514
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
515
     * set to INT_MAX if the buffer has not been used yet \
516
     * - encoding: unused\
517
     * - decoding: MUST be set by get_buffer()\
518
     */\
519
    int age;\
520
\
521
    /**\
522
     * is this picture used as reference\
523
     * - encoding: unused\
524
     * - decoding: set by lavc (before get_buffer() call))\
525
     */\
526
    int reference;\
527
\
528
    /**\
529
     * QP table\
530
     * - encoding: unused\
531
     * - decoding: set by lavc\
532
     */\
533
    int8_t *qscale_table;\
534
    /**\
535
     * QP store stride\
536
     * - encoding: unused\
537
     * - decoding: set by lavc\
538
     */\
539
    int qstride;\
540
\
541
    /**\
542
     * mbskip_table[mb]>=1 if MB didnt change\
543
     * stride= mb_width = (width+15)>>4\
544
     * - encoding: unused\
545
     * - decoding: set by lavc\
546
     */\
547
    uint8_t *mbskip_table;\
548
\
549
    /**\
550
     * Motion vector table.\
551
     * @code\
552
     * example:\
553
     * int mv_sample_log2= 4 - motion_subsample_log2;\
554
     * int mb_width= (width+15)>>4;\
555
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
556
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
557
     * @endcode\
558
     * - encoding: set by user\
559
     * - decoding: set by lavc\
560
     */\
561
    int16_t (*motion_val[2])[2];\
562
\
563
    /**\
564
     * Macroblock type table\
565
     * mb_type_base + mb_width + 2\
566
     * - encoding: set by user\
567
     * - decoding: set by lavc\
568
     */\
569
    uint32_t *mb_type;\
570
\
571
    /**\
572
     * log2 of the size of the block which a single vector in motion_val represents: \
573
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
574
     * - encoding: unused\
575
     * - decoding: set by lavc\
576
     */\
577
    uint8_t motion_subsample_log2;\
578
\
579
    /**\
580
     * for some private data of the user\
581
     * - encoding: unused\
582
     * - decoding: set by user\
583
     */\
584
    void *opaque;\
585
\
586
    /**\
587
     * error\
588
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
589
     * - decoding: unused\
590
     */\
591
    uint64_t error[4];\
592
\
593
    /**\
594
     * type of the buffer (to keep track of who has to dealloc data[*])\
595
     * - encoding: set by the one who allocs it\
596
     * - decoding: set by the one who allocs it\
597
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
598
     */\
599
    int type;\
600
    \
601
    /**\
602
     * when decoding, this signal how much the picture must be delayed.\
603
     * extra_delay = repeat_pict / (2*fps)\
604
     * - encoding: unused\
605
     * - decoding: set by lavc\
606
     */\
607
    int repeat_pict;\
608
    \
609
    /**\
610
     * \
611
     */\
612
    int qscale_type;\
613
    \
614
    /**\
615
     * The content of the picture is interlaced.\
616
     * - encoding: set by user\
617
     * - decoding: set by lavc (default 0)\
618
     */\
619
    int interlaced_frame;\
620
    \
621
    /**\
622
     * if the content is interlaced, is top field displayed first.\
623
     * - encoding: set by user\
624
     * - decoding: set by lavc\
625
     */\
626
    int top_field_first;\
627
    \
628
    /**\
629
     * Pan scan.\
630
     * - encoding: set by user\
631
     * - decoding: set by lavc\
632
     */\
633
    AVPanScan *pan_scan;\
634
    \
635
    /**\
636
     * tell user application that palette has changed from previous frame.\
637
     * - encoding: ??? (no palette-enabled encoder yet)\
638
     * - decoding: set by lavc (default 0)\
639
     */\
640
    int palette_has_changed;\
641
    \
642
    /**\
643
     * Codec suggestion on buffer type if != 0\
644
     * - encoding: unused\
645
     * - decoding: set by lavc (before get_buffer() call))\
646
     */\
647
    int buffer_hints;\
648
\
649
    /**\
650
     * DCT coeffitients\
651
     * - encoding: unused\
652
     * - decoding: set by lavc\
653
     */\
654
    short *dct_coeff;\
655
\
656
    /**\
657
     * Motion referece frame index\
658
     * - encoding: set by user\
659
     * - decoding: set by lavc\
660
     */\
661
    int8_t *ref_index[2];
662

    
663
#define FF_QSCALE_TYPE_MPEG1 0
664
#define FF_QSCALE_TYPE_MPEG2 1
665
#define FF_QSCALE_TYPE_H264  2
666

    
667
#define FF_BUFFER_TYPE_INTERNAL 1
668
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
669
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
670
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, don't dealloc anything
671

    
672

    
673
#define FF_I_TYPE 1 // Intra
674
#define FF_P_TYPE 2 // Predicted
675
#define FF_B_TYPE 3 // Bi-dir predicted
676
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
677
#define FF_SI_TYPE 5
678
#define FF_SP_TYPE 6
679

    
680
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
681
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
682
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
683
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
684

    
685
/**
686
 * Audio Video Frame.
687
 */
688
typedef struct AVFrame {
689
    FF_COMMON_FRAME
690
} AVFrame;
691

    
692
#define DEFAULT_FRAME_RATE_BASE 1001000
693

    
694
/**
695
 * main external api structure.
696
 */
697
typedef struct AVCodecContext {
698
    /**
699
     * Info on struct for av_log
700
     * - set by avcodec_alloc_context
701
     */
702
    AVClass *av_class;
703
    /**
704
     * the average bitrate.
705
     * - encoding: set by user. unused for constant quantizer encoding
706
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
707
     */
708
    int bit_rate;
709

    
710
    /**
711
     * number of bits the bitstream is allowed to diverge from the reference.
712
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
713
     * - encoding: set by user. unused for constant quantizer encoding
714
     * - decoding: unused
715
     */
716
    int bit_rate_tolerance;
717

    
718
    /**
719
     * CODEC_FLAG_*.
720
     * - encoding: set by user.
721
     * - decoding: set by user.
722
     */
723
    int flags;
724

    
725
    /**
726
     * some codecs needs additionnal format info. It is stored here
727
     * - encoding: set by user.
728
     * - decoding: set by lavc. (FIXME is this ok?)
729
     */
730
    int sub_id;
731

    
732
    /**
733
     * motion estimation algorithm used for video coding.
734
     * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
735
     * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
736
     * - encoding: MUST be set by user.
737
     * - decoding: unused
738
     */
739
    int me_method;
740

    
741
    /**
742
     * some codecs need / can use extra-data like huffman tables.
743
     * mjpeg: huffman tables
744
     * rv10: additional flags
745
     * mpeg4: global headers (they can be in the bitstream or here)
746
     * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
747
     * then extradata_size to avoid prolems if its read with the bitstream reader
748
     * the bytewise contents of extradata must not depend on the architecture or cpu endianness
749
     * - encoding: set/allocated/freed by lavc.
750
     * - decoding: set/allocated/freed by user.
751
     */
752
    uint8_t *extradata;
753
    int extradata_size;
754

    
755
    /**
756
     * this is the fundamental unit of time (in seconds) in terms
757
     * of which frame timestamps are represented. for fixed-fps content,
758
     * timebase should be 1/framerate and timestamp increments should be
759
     * identically 1.
760
     * - encoding: MUST be set by user
761
     * - decoding: set by lavc.
762
     */
763
    AVRational time_base;
764

    
765
    /* video only */
766
    /**
767
     * picture width / height.
768
     * - encoding: MUST be set by user.
769
     * - decoding: set by lavc.
770
     * Note, for compatibility its possible to set this instead of
771
     * coded_width/height before decoding
772
     */
773
    int width, height;
774

    
775
#define FF_ASPECT_EXTENDED 15
776

    
777
    /**
778
     * the number of pictures in a group of pitures, or 0 for intra_only.
779
     * - encoding: set by user.
780
     * - decoding: unused
781
     */
782
    int gop_size;
783

    
784
    /**
785
     * pixel format, see PIX_FMT_xxx.
786
     * - encoding: set by user.
787
     * - decoding: set by lavc.
788
     */
789
    enum PixelFormat pix_fmt;
790

    
791
    /**
792
     * Frame rate emulation. If not zero lower layer (i.e. format handler)
793
     * has to read frames at native frame rate.
794
     * - encoding: set by user.
795
     * - decoding: unused.
796
     */
797
    int rate_emu;
798

    
799
    /**
800
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
801
     * decoder to draw an horizontal band. It improve cache usage. Not
802
     * all codecs can do that. You must check the codec capabilities
803
     * before
804
     * - encoding: unused
805
     * - decoding: set by user.
806
     * @param height the height of the slice
807
     * @param y the y position of the slice
808
     * @param type 1->top field, 2->bottom field, 3->frame
809
     * @param offset offset into the AVFrame.data from which the slice should be read
810
     */
811
    void (*draw_horiz_band)(struct AVCodecContext *s,
812
                            const AVFrame *src, int offset[4],
813
                            int y, int type, int height);
814

    
815
    /* audio only */
816
    int sample_rate; ///< samples per sec
817
    int channels;
818

    
819
    /**
820
     * audio sample format.
821
     * - encoding: set by user.
822
     * - decoding: set by lavc.
823
     */
824
    enum SampleFormat sample_fmt;  ///< sample format, currenly unused
825

    
826
    /* the following data should not be initialized */
827
    /**
828
     * samples per packet. initialized when calling 'init'
829
     */
830
    int frame_size;
831
    int frame_number;   ///< audio or video frame number
832
    int real_pict_num;  ///< returns the real picture number of previous encoded frame
833

    
834
    /**
835
     * number of frames the decoded output will be delayed relative to
836
     * the encoded input.
837
     * - encoding: set by lavc.
838
     * - decoding: unused
839
     */
840
    int delay;
841

    
842
    /* - encoding parameters */
843
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
844
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
845

    
846
    /**
847
     * minimum quantizer.
848
     * - encoding: set by user.
849
     * - decoding: unused
850
     */
851
    int qmin;
852

    
853
    /**
854
     * maximum quantizer.
855
     * - encoding: set by user.
856
     * - decoding: unused
857
     */
858
    int qmax;
859

    
860
    /**
861
     * maximum quantizer difference etween frames.
862
     * - encoding: set by user.
863
     * - decoding: unused
864
     */
865
    int max_qdiff;
866

    
867
    /**
868
     * maximum number of b frames between non b frames.
869
     * note: the output will be delayed by max_b_frames+1 relative to the input
870
     * - encoding: set by user.
871
     * - decoding: unused
872
     */
873
    int max_b_frames;
874

    
875
    /**
876
     * qscale factor between ip and b frames.
877
     * - encoding: set by user.
878
     * - decoding: unused
879
     */
880
    float b_quant_factor;
881

    
882
    /** obsolete FIXME remove */
883
    int rc_strategy;
884
#define FF_RC_STRATEGY_XVID 1
885

    
886
    int b_frame_strategy;
887

    
888
    /**
889
     * hurry up amount.
890
     * deprecated in favor of skip_idct and skip_frame
891
     * - encoding: unused
892
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
893
     */
894
    int hurry_up;
895

    
896
    struct AVCodec *codec;
897

    
898
    void *priv_data;
899

    
900
    /* unused, FIXME remove*/
901
    int rtp_mode;
902

    
903
    int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
904
                            /* do it's best to deliver a chunk with size    */
905
                            /* below rtp_payload_size, the chunk will start */
906
                            /* with a start code on some codecs like H.263  */
907
                            /* This doesn't take account of any particular  */
908
                            /* headers inside the transmited RTP payload    */
909

    
910

    
911
    /* The RTP callback: This function is called   */
912
    /* every time the encoder has a packet to send */
913
    /* Depends on the encoder if the data starts   */
914
    /* with a Start Code (it should) H.263 does.   */
915
    /* mb_nb contains the number of macroblocks    */
916
    /* encoded in the RTP payload                  */
917
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
918

    
919
    /* statistics, used for 2-pass encoding */
920
    int mv_bits;
921
    int header_bits;
922
    int i_tex_bits;
923
    int p_tex_bits;
924
    int i_count;
925
    int p_count;
926
    int skip_count;
927
    int misc_bits;
928

    
929
    /**
930
     * number of bits used for the previously encoded frame.
931
     * - encoding: set by lavc
932
     * - decoding: unused
933
     */
934
    int frame_bits;
935

    
936
    /**
937
     * private data of the user, can be used to carry app specific stuff.
938
     * - encoding: set by user
939
     * - decoding: set by user
940
     */
941
    void *opaque;
942

    
943
    char codec_name[32];
944
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
945
    enum CodecID codec_id; /* see CODEC_ID_xxx */
946

    
947
    /**
948
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
949
     * this is used to workaround some encoder bugs
950
     * - encoding: set by user, if not then the default based on codec_id will be used
951
     * - decoding: set by user, will be converted to upper case by lavc during init
952
     */
953
    unsigned int codec_tag;
954

    
955
    /**
956
     * workaround bugs in encoders which sometimes cannot be detected automatically.
957
     * - encoding: set by user
958
     * - decoding: set by user
959
     */
960
    int workaround_bugs;
961
#define FF_BUG_AUTODETECT       1  ///< autodetection
962
#define FF_BUG_OLD_MSMPEG4      2
963
#define FF_BUG_XVID_ILACE       4
964
#define FF_BUG_UMP4             8
965
#define FF_BUG_NO_PADDING       16
966
#define FF_BUG_AMV              32
967
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
968
#define FF_BUG_QPEL_CHROMA      64
969
#define FF_BUG_STD_QPEL         128
970
#define FF_BUG_QPEL_CHROMA2     256
971
#define FF_BUG_DIRECT_BLOCKSIZE 512
972
#define FF_BUG_EDGE             1024
973
#define FF_BUG_HPEL_CHROMA      2048
974
#define FF_BUG_DC_CLIP          4096
975
#define FF_BUG_MS               8192 ///< workaround various bugs in microsofts broken decoders
976
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
977

    
978
    /**
979
     * luma single coeff elimination threshold.
980
     * - encoding: set by user
981
     * - decoding: unused
982
     */
983
    int luma_elim_threshold;
984

    
985
    /**
986
     * chroma single coeff elimination threshold.
987
     * - encoding: set by user
988
     * - decoding: unused
989
     */
990
    int chroma_elim_threshold;
991

    
992
    /**
993
     * strictly follow the std (MPEG4, ...).
994
     * - encoding: set by user
995
     * - decoding: unused
996
     */
997
    int strict_std_compliance;
998
#define FF_COMPLIANCE_VERY_STRICT   2 ///< strictly conform to a older more strict version of the spec or reference software
999
#define FF_COMPLIANCE_STRICT        1 ///< strictly conform to all the things in the spec no matter what consequences
1000
#define FF_COMPLIANCE_NORMAL        0
1001
#define FF_COMPLIANCE_INOFFICIAL   -1 ///< allow inofficial extensions
1002
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
1003

    
1004
    /**
1005
     * qscale offset between ip and b frames.
1006
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1007
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1008
     * - encoding: set by user.
1009
     * - decoding: unused
1010
     */
1011
    float b_quant_offset;
1012

    
1013
    /**
1014
     * error resilience higher values will detect more errors but may missdetect
1015
     * some more or less valid parts as errors.
1016
     * - encoding: unused
1017
     * - decoding: set by user
1018
     */
1019
    int error_resilience;
1020
#define FF_ER_CAREFUL         1
1021
#define FF_ER_COMPLIANT       2
1022
#define FF_ER_AGGRESSIVE      3
1023
#define FF_ER_VERY_AGGRESSIVE 4
1024

    
1025
    /**
1026
     * called at the beginning of each frame to get a buffer for it.
1027
     * if pic.reference is set then the frame will be read later by lavc
1028
     * avcodec_align_dimensions() should be used to find the required width and
1029
     * height, as they normally need to be rounded up to the next multiple of 16
1030
     * - encoding: unused
1031
     * - decoding: set by lavc, user can override
1032
     */
1033
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1034

    
1035
    /**
1036
     * called to release buffers which where allocated with get_buffer.
1037
     * a released buffer can be reused in get_buffer()
1038
     * pic.data[*] must be set to NULL
1039
     * - encoding: unused
1040
     * - decoding: set by lavc, user can override
1041
     */
1042
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1043

    
1044
    /**
1045
     * if 1 the stream has a 1 frame delay during decoding.
1046
     * - encoding: set by lavc
1047
     * - decoding: set by lavc
1048
     */
1049
    int has_b_frames;
1050

    
1051
    /**
1052
     * number of bytes per packet if constant and known or 0
1053
     * used by some WAV based audio codecs
1054
     */
1055
    int block_align;
1056

    
1057
    int parse_only; /* - decoding only: if true, only parsing is done
1058
                       (function avcodec_parse_frame()). The frame
1059
                       data is returned. Only MPEG codecs support this now. */
1060

    
1061
    /**
1062
     * 0-> h263 quant 1-> mpeg quant.
1063
     * - encoding: set by user.
1064
     * - decoding: unused
1065
     */
1066
    int mpeg_quant;
1067

    
1068
    /**
1069
     * pass1 encoding statistics output buffer.
1070
     * - encoding: set by lavc
1071
     * - decoding: unused
1072
     */
1073
    char *stats_out;
1074

    
1075
    /**
1076
     * pass2 encoding statistics input buffer.
1077
     * concatenated stuff from stats_out of pass1 should be placed here
1078
     * - encoding: allocated/set/freed by user
1079
     * - decoding: unused
1080
     */
1081
    char *stats_in;
1082

    
1083
    /**
1084
     * ratecontrol qmin qmax limiting method.
1085
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1086
     * - encoding: set by user.
1087
     * - decoding: unused
1088
     */
1089
    float rc_qsquish;
1090

    
1091
    float rc_qmod_amp;
1092
    int rc_qmod_freq;
1093

    
1094
    /**
1095
     * ratecontrol override, see RcOverride.
1096
     * - encoding: allocated/set/freed by user.
1097
     * - decoding: unused
1098
     */
1099
    RcOverride *rc_override;
1100
    int rc_override_count;
1101

    
1102
    /**
1103
     * rate control equation.
1104
     * - encoding: set by user
1105
     * - decoding: unused
1106
     */
1107
    char *rc_eq;
1108

    
1109
    /**
1110
     * maximum bitrate.
1111
     * - encoding: set by user.
1112
     * - decoding: unused
1113
     */
1114
    int rc_max_rate;
1115

    
1116
    /**
1117
     * minimum bitrate.
1118
     * - encoding: set by user.
1119
     * - decoding: unused
1120
     */
1121
    int rc_min_rate;
1122

    
1123
    /**
1124
     * decoder bitstream buffer size.
1125
     * - encoding: set by user.
1126
     * - decoding: unused
1127
     */
1128
    int rc_buffer_size;
1129
    float rc_buffer_aggressivity;
1130

    
1131
    /**
1132
     * qscale factor between p and i frames.
1133
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1134
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1135
     * - encoding: set by user.
1136
     * - decoding: unused
1137
     */
1138
    float i_quant_factor;
1139

    
1140
    /**
1141
     * qscale offset between p and i frames.
1142
     * - encoding: set by user.
1143
     * - decoding: unused
1144
     */
1145
    float i_quant_offset;
1146

    
1147
    /**
1148
     * initial complexity for pass1 ratecontrol.
1149
     * - encoding: set by user.
1150
     * - decoding: unused
1151
     */
1152
    float rc_initial_cplx;
1153

    
1154
    /**
1155
     * dct algorithm, see FF_DCT_* below.
1156
     * - encoding: set by user
1157
     * - decoding: unused
1158
     */
1159
    int dct_algo;
1160
#define FF_DCT_AUTO    0
1161
#define FF_DCT_FASTINT 1
1162
#define FF_DCT_INT     2
1163
#define FF_DCT_MMX     3
1164
#define FF_DCT_MLIB    4
1165
#define FF_DCT_ALTIVEC 5
1166
#define FF_DCT_FAAN    6
1167

    
1168
    /**
1169
     * luminance masking (0-> disabled).
1170
     * - encoding: set by user
1171
     * - decoding: unused
1172
     */
1173
    float lumi_masking;
1174

    
1175
    /**
1176
     * temporary complexity masking (0-> disabled).
1177
     * - encoding: set by user
1178
     * - decoding: unused
1179
     */
1180
    float temporal_cplx_masking;
1181

    
1182
    /**
1183
     * spatial complexity masking (0-> disabled).
1184
     * - encoding: set by user
1185
     * - decoding: unused
1186
     */
1187
    float spatial_cplx_masking;
1188

    
1189
    /**
1190
     * p block masking (0-> disabled).
1191
     * - encoding: set by user
1192
     * - decoding: unused
1193
     */
1194
    float p_masking;
1195

    
1196
    /**
1197
     * darkness masking (0-> disabled).
1198
     * - encoding: set by user
1199
     * - decoding: unused
1200
     */
1201
    float dark_masking;
1202

    
1203

    
1204
    /* for binary compatibility */
1205
    int unused;
1206

    
1207
    /**
1208
     * idct algorithm, see FF_IDCT_* below.
1209
     * - encoding: set by user
1210
     * - decoding: set by user
1211
     */
1212
    int idct_algo;
1213
#define FF_IDCT_AUTO         0
1214
#define FF_IDCT_INT          1
1215
#define FF_IDCT_SIMPLE       2
1216
#define FF_IDCT_SIMPLEMMX    3
1217
#define FF_IDCT_LIBMPEG2MMX  4
1218
#define FF_IDCT_PS2          5
1219
#define FF_IDCT_MLIB         6
1220
#define FF_IDCT_ARM          7
1221
#define FF_IDCT_ALTIVEC      8
1222
#define FF_IDCT_SH4          9
1223
#define FF_IDCT_SIMPLEARM    10
1224
#define FF_IDCT_H264         11
1225
#define FF_IDCT_VP3          12
1226
#define FF_IDCT_IPP          13
1227
#define FF_IDCT_XVIDMMX      14
1228
#define FF_IDCT_CAVS         15
1229
#define FF_IDCT_SIMPLEARMV5TE 16
1230

    
1231
    /**
1232
     * slice count.
1233
     * - encoding: set by lavc
1234
     * - decoding: set by user (or 0)
1235
     */
1236
    int slice_count;
1237
    /**
1238
     * slice offsets in the frame in bytes.
1239
     * - encoding: set/allocated by lavc
1240
     * - decoding: set/allocated by user (or NULL)
1241
     */
1242
    int *slice_offset;
1243

    
1244
    /**
1245
     * error concealment flags.
1246
     * - encoding: unused
1247
     * - decoding: set by user
1248
     */
1249
    int error_concealment;
1250
#define FF_EC_GUESS_MVS   1
1251
#define FF_EC_DEBLOCK     2
1252

    
1253
    /**
1254
     * dsp_mask could be add used to disable unwanted CPU features
1255
     * CPU features (i.e. MMX, SSE. ...)
1256
     *
1257
     * with FORCE flag you may instead enable given CPU features
1258
     * (Dangerous: usable in case of misdetection, improper usage however will
1259
     * result into program crash)
1260
     */
1261
    unsigned dsp_mask;
1262
#define FF_MM_FORCE    0x80000000 /* force usage of selected flags (OR) */
1263
    /* lower 16 bits - CPU features */
1264
#ifdef HAVE_MMX
1265
#define FF_MM_MMX      0x0001 /* standard MMX */
1266
#define FF_MM_3DNOW    0x0004 /* AMD 3DNOW */
1267
#define FF_MM_MMXEXT   0x0002 /* SSE integer functions or AMD MMX ext */
1268
#define FF_MM_SSE      0x0008 /* SSE functions */
1269
#define FF_MM_SSE2     0x0010 /* PIV SSE2 functions */
1270
#define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1271
#endif /* HAVE_MMX */
1272
#ifdef HAVE_IWMMXT
1273
#define FF_MM_IWMMXT   0x0100 /* XScale IWMMXT */
1274
#endif /* HAVE_IWMMXT */
1275

    
1276
    /**
1277
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1278
     * - encoding: set by lavc
1279
     * - decoding: set by user
1280
     */
1281
     int bits_per_sample;
1282

    
1283
    /**
1284
     * prediction method (needed for huffyuv).
1285
     * - encoding: set by user
1286
     * - decoding: unused
1287
     */
1288
     int prediction_method;
1289
#define FF_PRED_LEFT   0
1290
#define FF_PRED_PLANE  1
1291
#define FF_PRED_MEDIAN 2
1292

    
1293
    /**
1294
     * sample aspect ratio (0 if unknown).
1295
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1296
     * - encoding: set by user.
1297
     * - decoding: set by lavc.
1298
     */
1299
    AVRational sample_aspect_ratio;
1300

    
1301
    /**
1302
     * the picture in the bitstream.
1303
     * - encoding: set by lavc
1304
     * - decoding: set by lavc
1305
     */
1306
    AVFrame *coded_frame;
1307

    
1308
    /**
1309
     * debug.
1310
     * - encoding: set by user.
1311
     * - decoding: set by user.
1312
     */
1313
    int debug;
1314
#define FF_DEBUG_PICT_INFO 1
1315
#define FF_DEBUG_RC        2
1316
#define FF_DEBUG_BITSTREAM 4
1317
#define FF_DEBUG_MB_TYPE   8
1318
#define FF_DEBUG_QP        16
1319
#define FF_DEBUG_MV        32
1320
#define FF_DEBUG_DCT_COEFF 0x00000040
1321
#define FF_DEBUG_SKIP      0x00000080
1322
#define FF_DEBUG_STARTCODE 0x00000100
1323
#define FF_DEBUG_PTS       0x00000200
1324
#define FF_DEBUG_ER        0x00000400
1325
#define FF_DEBUG_MMCO      0x00000800
1326
#define FF_DEBUG_BUGS      0x00001000
1327
#define FF_DEBUG_VIS_QP    0x00002000
1328
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1329

    
1330
    /**
1331
     * debug.
1332
     * - encoding: set by user.
1333
     * - decoding: set by user.
1334
     */
1335
    int debug_mv;
1336
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1337
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1338
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1339

    
1340
    /**
1341
     * error.
1342
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1343
     * - decoding: unused
1344
     */
1345
    uint64_t error[4];
1346

    
1347
    /**
1348
     * minimum MB quantizer.
1349
     * - encoding: unused
1350
     * - decoding: unused
1351
     */
1352
    int mb_qmin;
1353

    
1354
    /**
1355
     * maximum MB quantizer.
1356
     * - encoding: unused
1357
     * - decoding: unused
1358
     */
1359
    int mb_qmax;
1360

    
1361
    /**
1362
     * motion estimation compare function.
1363
     * - encoding: set by user.
1364
     * - decoding: unused
1365
     */
1366
    int me_cmp;
1367
    /**
1368
     * subpixel motion estimation compare function.
1369
     * - encoding: set by user.
1370
     * - decoding: unused
1371
     */
1372
    int me_sub_cmp;
1373
    /**
1374
     * macroblock compare function (not supported yet).
1375
     * - encoding: set by user.
1376
     * - decoding: unused
1377
     */
1378
    int mb_cmp;
1379
    /**
1380
     * interlaced dct compare function
1381
     * - encoding: set by user.
1382
     * - decoding: unused
1383
     */
1384
    int ildct_cmp;
1385
#define FF_CMP_SAD  0
1386
#define FF_CMP_SSE  1
1387
#define FF_CMP_SATD 2
1388
#define FF_CMP_DCT  3
1389
#define FF_CMP_PSNR 4
1390
#define FF_CMP_BIT  5
1391
#define FF_CMP_RD   6
1392
#define FF_CMP_ZERO 7
1393
#define FF_CMP_VSAD 8
1394
#define FF_CMP_VSSE 9
1395
#define FF_CMP_NSSE 10
1396
#define FF_CMP_W53  11
1397
#define FF_CMP_W97  12
1398
#define FF_CMP_DCTMAX 13
1399
#define FF_CMP_DCT264 14
1400
#define FF_CMP_CHROMA 256
1401

    
1402
    /**
1403
     * ME diamond size & shape.
1404
     * - encoding: set by user.
1405
     * - decoding: unused
1406
     */
1407
    int dia_size;
1408

    
1409
    /**
1410
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1411
     * - encoding: set by user.
1412
     * - decoding: unused
1413
     */
1414
    int last_predictor_count;
1415

    
1416
    /**
1417
     * pre pass for motion estimation.
1418
     * - encoding: set by user.
1419
     * - decoding: unused
1420
     */
1421
    int pre_me;
1422

    
1423
    /**
1424
     * motion estimation pre pass compare function.
1425
     * - encoding: set by user.
1426
     * - decoding: unused
1427
     */
1428
    int me_pre_cmp;
1429

    
1430
    /**
1431
     * ME pre pass diamond size & shape.
1432
     * - encoding: set by user.
1433
     * - decoding: unused
1434
     */
1435
    int pre_dia_size;
1436

    
1437
    /**
1438
     * subpel ME quality.
1439
     * - encoding: set by user.
1440
     * - decoding: unused
1441
     */
1442
    int me_subpel_quality;
1443

    
1444
    /**
1445
     * callback to negotiate the pixelFormat.
1446
     * @param fmt is the list of formats which are supported by the codec,
1447
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1448
     * the first is allways the native one
1449
     * @return the choosen format
1450
     * - encoding: unused
1451
     * - decoding: set by user, if not set then the native format will always be choosen
1452
     */
1453
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1454

    
1455
    /**
1456
     * DTG active format information (additionnal aspect ratio
1457
     * information only used in DVB MPEG2 transport streams). 0 if
1458
     * not set.
1459
     *
1460
     * - encoding: unused.
1461
     * - decoding: set by decoder
1462
     */
1463
    int dtg_active_format;
1464
#define FF_DTG_AFD_SAME         8
1465
#define FF_DTG_AFD_4_3          9
1466
#define FF_DTG_AFD_16_9         10
1467
#define FF_DTG_AFD_14_9         11
1468
#define FF_DTG_AFD_4_3_SP_14_9  13
1469
#define FF_DTG_AFD_16_9_SP_14_9 14
1470
#define FF_DTG_AFD_SP_4_3       15
1471

    
1472
    /**
1473
     * Maximum motion estimation search range in subpel units.
1474
     * if 0 then no limit
1475
     *
1476
     * - encoding: set by user.
1477
     * - decoding: unused.
1478
     */
1479
    int me_range;
1480

    
1481
    /**
1482
     * intra quantizer bias.
1483
     * - encoding: set by user.
1484
     * - decoding: unused
1485
     */
1486
    int intra_quant_bias;
1487
#define FF_DEFAULT_QUANT_BIAS 999999
1488

    
1489
    /**
1490
     * inter quantizer bias.
1491
     * - encoding: set by user.
1492
     * - decoding: unused
1493
     */
1494
    int inter_quant_bias;
1495

    
1496
    /**
1497
     * color table ID.
1498
     * - encoding: unused.
1499
     * - decoding: which clrtable should be used for 8bit RGB images
1500
     *             table have to be stored somewhere FIXME
1501
     */
1502
    int color_table_id;
1503

    
1504
    /**
1505
     * internal_buffer count.
1506
     * Don't touch, used by lavc default_get_buffer()
1507
     */
1508
    int internal_buffer_count;
1509

    
1510
    /**
1511
     * internal_buffers.
1512
     * Don't touch, used by lavc default_get_buffer()
1513
     */
1514
    void *internal_buffer;
1515

    
1516
#define FF_LAMBDA_SHIFT 7
1517
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1518
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1519
#define FF_LAMBDA_MAX (256*128-1)
1520

    
1521
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1522
    /**
1523
     * global quality for codecs which cannot change it per frame.
1524
     * this should be proportional to MPEG1/2/4 qscale.
1525
     * - encoding: set by user.
1526
     * - decoding: unused
1527
     */
1528
    int global_quality;
1529

    
1530
#define FF_CODER_TYPE_VLC   0
1531
#define FF_CODER_TYPE_AC    1
1532
    /**
1533
     * coder type
1534
     * - encoding: set by user.
1535
     * - decoding: unused
1536
     */
1537
    int coder_type;
1538

    
1539
    /**
1540
     * context model
1541
     * - encoding: set by user.
1542
     * - decoding: unused
1543
     */
1544
    int context_model;
1545
#if 0
1546
    /**
1547
     *
1548
     * - encoding: unused
1549
     * - decoding: set by user.
1550
     */
1551
    uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1552
#endif
1553

    
1554
    /**
1555
     * slice flags
1556
     * - encoding: unused
1557
     * - decoding: set by user.
1558
     */
1559
    int slice_flags;
1560
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1561
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1562
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1563

    
1564
    /**
1565
     * XVideo Motion Acceleration
1566
     * - encoding: forbidden
1567
     * - decoding: set by decoder
1568
     */
1569
    int xvmc_acceleration;
1570

    
1571
    /**
1572
     * macroblock decision mode
1573
     * - encoding: set by user.
1574
     * - decoding: unused
1575
     */
1576
    int mb_decision;
1577
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1578
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1579
#define FF_MB_DECISION_RD     2        ///< rate distoration
1580

    
1581
    /**
1582
     * custom intra quantization matrix
1583
     * - encoding: set by user, can be NULL
1584
     * - decoding: set by lavc
1585
     */
1586
    uint16_t *intra_matrix;
1587

    
1588
    /**
1589
     * custom inter quantization matrix
1590
     * - encoding: set by user, can be NULL
1591
     * - decoding: set by lavc
1592
     */
1593
    uint16_t *inter_matrix;
1594

    
1595
    /**
1596
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1597
     * this is used to workaround some encoder bugs
1598
     * - encoding: unused
1599
     * - decoding: set by user, will be converted to upper case by lavc during init
1600
     */
1601
    unsigned int stream_codec_tag;
1602

    
1603
    /**
1604
     * scene change detection threshold.
1605
     * 0 is default, larger means fewer detected scene changes
1606
     * - encoding: set by user.
1607
     * - decoding: unused
1608
     */
1609
    int scenechange_threshold;
1610

    
1611
    /**
1612
     * minimum lagrange multipler
1613
     * - encoding: set by user.
1614
     * - decoding: unused
1615
     */
1616
    int lmin;
1617

    
1618
    /**
1619
     * maximum lagrange multipler
1620
     * - encoding: set by user.
1621
     * - decoding: unused
1622
     */
1623
    int lmax;
1624

    
1625
    /**
1626
     * Palette control structure
1627
     * - encoding: ??? (no palette-enabled encoder yet)
1628
     * - decoding: set by user.
1629
     */
1630
    struct AVPaletteControl *palctrl;
1631

    
1632
    /**
1633
     * noise reduction strength
1634
     * - encoding: set by user.
1635
     * - decoding: unused
1636
     */
1637
    int noise_reduction;
1638

    
1639
    /**
1640
     * called at the beginning of a frame to get cr buffer for it.
1641
     * buffer type (size, hints) must be the same. lavc won't check it.
1642
     * lavc will pass previous buffer in pic, function should return
1643
     * same buffer or new buffer with old frame "painted" into it.
1644
     * if pic.data[0] == NULL must behave like get_buffer().
1645
     * - encoding: unused
1646
     * - decoding: set by lavc, user can override
1647
     */
1648
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1649

    
1650
    /**
1651
     * number of bits which should be loaded into the rc buffer before decoding starts
1652
     * - encoding: set by user.
1653
     * - decoding: unused
1654
     */
1655
    int rc_initial_buffer_occupancy;
1656

    
1657
    /**
1658
     *
1659
     * - encoding: set by user.
1660
     * - decoding: unused
1661
     */
1662
    int inter_threshold;
1663

    
1664
    /**
1665
     * CODEC_FLAG2_*.
1666
     * - encoding: set by user.
1667
     * - decoding: set by user.
1668
     */
1669
    int flags2;
1670

    
1671
    /**
1672
     * simulates errors in the bitstream to test error concealment.
1673
     * - encoding: set by user.
1674
     * - decoding: unused.
1675
     */
1676
    int error_rate;
1677

    
1678
    /**
1679
     * MP3 antialias algorithm, see FF_AA_* below.
1680
     * - encoding: unused
1681
     * - decoding: set by user
1682
     */
1683
    int antialias_algo;
1684
#define FF_AA_AUTO    0
1685
#define FF_AA_FASTINT 1 //not implemented yet
1686
#define FF_AA_INT     2
1687
#define FF_AA_FLOAT   3
1688
    /**
1689
     * Quantizer noise shaping.
1690
     * - encoding: set by user
1691
     * - decoding: unused
1692
     */
1693
    int quantizer_noise_shaping;
1694

    
1695
    /**
1696
     * Thread count.
1697
     * is used to decide how many independant tasks should be passed to execute()
1698
     * - encoding: set by user
1699
     * - decoding: set by user
1700
     */
1701
    int thread_count;
1702

    
1703
    /**
1704
     * the codec may call this to execute several independant things. it will return only after
1705
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1706
     * default implementation will execute the parts serially
1707
     * @param count the number of things to execute
1708
     * - encoding: set by lavc, user can override
1709
     * - decoding: set by lavc, user can override
1710
     */
1711
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1712

    
1713
    /**
1714
     * Thread opaque.
1715
     * can be used by execute() to store some per AVCodecContext stuff.
1716
     * - encoding: set by execute()
1717
     * - decoding: set by execute()
1718
     */
1719
    void *thread_opaque;
1720

    
1721
    /**
1722
     * Motion estimation threshold. under which no motion estimation is
1723
     * performed, but instead the user specified motion vectors are used
1724
     *
1725
     * - encoding: set by user
1726
     * - decoding: unused
1727
     */
1728
     int me_threshold;
1729

    
1730
    /**
1731
     * Macroblock threshold. under which the user specified macroblock types will be used
1732
     * - encoding: set by user
1733
     * - decoding: unused
1734
     */
1735
     int mb_threshold;
1736

    
1737
    /**
1738
     * precision of the intra dc coefficient - 8.
1739
     * - encoding: set by user
1740
     * - decoding: unused
1741
     */
1742
     int intra_dc_precision;
1743

    
1744
    /**
1745
     * noise vs. sse weight for the nsse comparsion function.
1746
     * - encoding: set by user
1747
     * - decoding: unused
1748
     */
1749
     int nsse_weight;
1750

    
1751
    /**
1752
     * number of macroblock rows at the top which are skipped.
1753
     * - encoding: unused
1754
     * - decoding: set by user
1755
     */
1756
     int skip_top;
1757

    
1758
    /**
1759
     * number of macroblock rows at the bottom which are skipped.
1760
     * - encoding: unused
1761
     * - decoding: set by user
1762
     */
1763
     int skip_bottom;
1764

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

    
1773
    /**
1774
     * level
1775
     * - encoding: set by user
1776
     * - decoding: set by lavc
1777
     */
1778
     int level;
1779
#define FF_LEVEL_UNKNOWN -99
1780

    
1781
    /**
1782
     * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1783
     * - encoding: unused
1784
     * - decoding: set by user
1785
     */
1786
     int lowres;
1787

    
1788
    /**
1789
     * bitsream width / height. may be different from width/height if lowres
1790
     * or other things are used
1791
     * - encoding: unused
1792
     * - decoding: set by user before init if known, codec should override / dynamically change if needed
1793
     */
1794
    int coded_width, coded_height;
1795

    
1796
    /**
1797
     * frame skip threshold
1798
     * - encoding: set by user
1799
     * - decoding: unused
1800
     */
1801
    int frame_skip_threshold;
1802

    
1803
    /**
1804
     * frame skip factor
1805
     * - encoding: set by user
1806
     * - decoding: unused
1807
     */
1808
    int frame_skip_factor;
1809

    
1810
    /**
1811
     * frame skip exponent
1812
     * - encoding: set by user
1813
     * - decoding: unused
1814
     */
1815
    int frame_skip_exp;
1816

    
1817
    /**
1818
     * frame skip comparission function
1819
     * - encoding: set by user.
1820
     * - decoding: unused
1821
     */
1822
    int frame_skip_cmp;
1823

    
1824
    /**
1825
     * border processing masking. raises the quantizer for mbs on the borders
1826
     * of the picture.
1827
     * - encoding: set by user
1828
     * - decoding: unused
1829
     */
1830
    float border_masking;
1831

    
1832
    /**
1833
     * minimum MB lagrange multipler.
1834
     * - encoding: set by user.
1835
     * - decoding: unused
1836
     */
1837
    int mb_lmin;
1838

    
1839
    /**
1840
     * maximum MB lagrange multipler.
1841
     * - encoding: set by user.
1842
     * - decoding: unused
1843
     */
1844
    int mb_lmax;
1845

    
1846
    /**
1847
     *
1848
     * - encoding: set by user.
1849
     * - decoding: unused
1850
     */
1851
    int me_penalty_compensation;
1852

    
1853
    /**
1854
     *
1855
     * - encoding: unused
1856
     * - decoding: set by user.
1857
     */
1858
    enum AVDiscard skip_loop_filter;
1859

    
1860
    /**
1861
     *
1862
     * - encoding: unused
1863
     * - decoding: set by user.
1864
     */
1865
    enum AVDiscard skip_idct;
1866

    
1867
    /**
1868
     *
1869
     * - encoding: unused
1870
     * - decoding: set by user.
1871
     */
1872
    enum AVDiscard skip_frame;
1873

    
1874
    /**
1875
     *
1876
     * - encoding: set by user.
1877
     * - decoding: unused
1878
     */
1879
    int bidir_refine;
1880

    
1881
    /**
1882
     *
1883
     * - encoding: set by user.
1884
     * - decoding: unused
1885
     */
1886
    int brd_scale;
1887

    
1888
    /**
1889
     * constant rate factor - quality-based VBR - values ~correspond to qps
1890
     * - encoding: set by user.
1891
     * - decoding: unused
1892
     */
1893
    float crf;
1894

    
1895
    /**
1896
     * constant quantization parameter rate control method
1897
     * - encoding: set by user.
1898
     * - decoding: unused
1899
     */
1900
    int cqp;
1901

    
1902
    /**
1903
     * minimum gop size
1904
     * - encoding: set by user.
1905
     * - decoding: unused
1906
     */
1907
    int keyint_min;
1908

    
1909
    /**
1910
     * number of reference frames
1911
     * - encoding: set by user.
1912
     * - decoding: unused
1913
     */
1914
    int refs;
1915

    
1916
    /**
1917
     * chroma qp offset from luma
1918
     * - encoding: set by user.
1919
     * - decoding: unused
1920
     */
1921
    int chromaoffset;
1922

    
1923
    /**
1924
     * influences how often b-frames are used
1925
     * - encoding: set by user.
1926
     * - decoding: unused
1927
     */
1928
    int bframebias;
1929

    
1930
    /**
1931
     * trellis RD quantization
1932
     * - encoding: set by user.
1933
     * - decoding: unused
1934
     */
1935
    int trellis;
1936

    
1937
    /**
1938
     * reduce fluctuations in qp (before curve compression)
1939
     * - encoding: set by user.
1940
     * - decoding: unused
1941
     */
1942
    float complexityblur;
1943

    
1944
    /**
1945
     * in-loop deblocking filter alphac0 parameter
1946
     * alpha is in the range -6...6
1947
     * - encoding: set by user.
1948
     * - decoding: unused
1949
     */
1950
    int deblockalpha;
1951

    
1952
    /**
1953
     * in-loop deblocking filter beta parameter
1954
     * beta is in the range -6...6
1955
     * - encoding: set by user.
1956
     * - decoding: unused
1957
     */
1958
    int deblockbeta;
1959

    
1960
    /**
1961
     * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1962
     * - encoding: set by user.
1963
     * - decoding: unused
1964
     */
1965
    int partitions;
1966
#define X264_PART_I4X4 0x001  /* Analyse i4x4 */
1967
#define X264_PART_I8X8 0x002  /* Analyse i8x8 (requires 8x8 transform) */
1968
#define X264_PART_P8X8 0x010  /* Analyse p16x8, p8x16 and p8x8 */
1969
#define X264_PART_P4X4 0x020  /* Analyse p8x4, p4x8, p4x4 */
1970
#define X264_PART_B8X8 0x100  /* Analyse b16x8, b8x16 and b8x8 */
1971

    
1972
    /**
1973
     * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1974
     * - encoding: set by user.
1975
     * - decoding: unused
1976
     */
1977
    int directpred;
1978

    
1979
    /**
1980
     * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
1981
     * - encoding: set by user.
1982
     * - decoding: unused
1983
     */
1984
    int cutoff;
1985

    
1986
    /**
1987
     * multiplied by qscale for each frame and added to scene_change_score
1988
     * - encoding: set by user.
1989
     * - decoding: unused
1990
     */
1991
    int scenechange_factor;
1992

    
1993
    /**
1994
     *
1995
     * note: value depends upon the compare functin used for fullpel ME
1996
     * - encoding: set by user.
1997
     * - decoding: unused
1998
     */
1999
    int mv0_threshold;
2000

    
2001
    /**
2002
     * adjusts sensitivity of b_frame_strategy 1
2003
     * - encoding: set by user.
2004
     * - decoding: unused
2005
     */
2006
    int b_sensitivity;
2007

    
2008
    /**
2009
     * - encoding: set by user.
2010
     * - decoding: unused
2011
     */
2012
    int compression_level;
2013
#define FF_COMPRESSION_DEFAULT -1
2014

    
2015
    /**
2016
     * sets whether to use LPC mode - used by FLAC encoder
2017
     * - encoding: set by user.
2018
     * - decoding: unused.
2019
     */
2020
    int use_lpc;
2021

    
2022
    /**
2023
     * LPC coefficient precision - used by FLAC encoder
2024
     * - encoding: set by user.
2025
     * - decoding: unused.
2026
     */
2027
    int lpc_coeff_precision;
2028

    
2029
    /**
2030
     * - encoding: set by user.
2031
     * - decoding: unused.
2032
     */
2033
    int min_prediction_order;
2034

    
2035
    /**
2036
     * - encoding: set by user.
2037
     * - decoding: unused.
2038
     */
2039
    int max_prediction_order;
2040

    
2041
    /**
2042
     * search method for selecting prediction order
2043
     * - encoding: set by user.
2044
     * - decoding: unused.
2045
     */
2046
    int prediction_order_method;
2047

    
2048
    /**
2049
     * - encoding: set by user.
2050
     * - decoding: unused.
2051
     */
2052
    int min_partition_order;
2053

    
2054
    /**
2055
     * - encoding: set by user.
2056
     * - decoding: unused.
2057
     */
2058
    int max_partition_order;
2059
} AVCodecContext;
2060

    
2061
/**
2062
 * AVCodec.
2063
 */
2064
typedef struct AVCodec {
2065
    const char *name;
2066
    enum CodecType type;
2067
    enum CodecID id;
2068
    int priv_data_size;
2069
    int (*init)(AVCodecContext *);
2070
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2071
    int (*close)(AVCodecContext *);
2072
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2073
                  uint8_t *buf, int buf_size);
2074
    int capabilities;
2075
#if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
2076
    void *dummy; // FIXME remove next time we break binary compatibility
2077
#endif
2078
    struct AVCodec *next;
2079
    void (*flush)(AVCodecContext *);
2080
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2081
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2082
} AVCodec;
2083

    
2084
/**
2085
 * four components are given, that's all.
2086
 * the last component is alpha
2087
 */
2088
typedef struct AVPicture {
2089
    uint8_t *data[4];
2090
    int linesize[4];       ///< number of bytes per line
2091
} AVPicture;
2092

    
2093
/**
2094
 * AVPaletteControl
2095
 * This structure defines a method for communicating palette changes
2096
 * between and demuxer and a decoder.
2097
 * this is totally broken, palette changes should be sent as AVPackets
2098
 */
2099
#define AVPALETTE_SIZE 1024
2100
#define AVPALETTE_COUNT 256
2101
typedef struct AVPaletteControl {
2102

    
2103
    /* demuxer sets this to 1 to indicate the palette has changed;
2104
     * decoder resets to 0 */
2105
    int palette_changed;
2106

    
2107
    /* 4-byte ARGB palette entries, stored in native byte order; note that
2108
     * the individual palette components should be on a 8-bit scale; if
2109
     * the palette data comes from a IBM VGA native format, the component
2110
     * data is probably 6 bits in size and needs to be scaled */
2111
    unsigned int palette[AVPALETTE_COUNT];
2112

    
2113
} AVPaletteControl attribute_deprecated;
2114

    
2115
typedef struct AVSubtitleRect {
2116
    uint16_t x;
2117
    uint16_t y;
2118
    uint16_t w;
2119
    uint16_t h;
2120
    uint16_t nb_colors;
2121
    int linesize;
2122
    uint32_t *rgba_palette;
2123
    uint8_t *bitmap;
2124
} AVSubtitleRect;
2125

    
2126
typedef struct AVSubtitle {
2127
    uint16_t format; /* 0 = graphics */
2128
    uint32_t start_display_time; /* relative to packet pts, in ms */
2129
    uint32_t end_display_time; /* relative to packet pts, in ms */
2130
    uint32_t num_rects;
2131
    AVSubtitleRect *rects;
2132
} AVSubtitle;
2133

    
2134
extern AVCodec ac3_encoder;
2135
extern AVCodec mp2_encoder;
2136
extern AVCodec mp3lame_encoder;
2137
extern AVCodec oggvorbis_encoder;
2138
extern AVCodec faac_encoder;
2139
extern AVCodec flac_encoder;
2140
extern AVCodec xvid_encoder;
2141
extern AVCodec mpeg1video_encoder;
2142
extern AVCodec mpeg2video_encoder;
2143
extern AVCodec h261_encoder;
2144
extern AVCodec h263_encoder;
2145
extern AVCodec h263p_encoder;
2146
extern AVCodec flv_encoder;
2147
extern AVCodec rv10_encoder;
2148
extern AVCodec rv20_encoder;
2149
extern AVCodec dvvideo_encoder;
2150
extern AVCodec mjpeg_encoder;
2151
extern AVCodec ljpeg_encoder;
2152
extern AVCodec jpegls_encoder;
2153
extern AVCodec png_encoder;
2154
extern AVCodec ppm_encoder;
2155
extern AVCodec pgm_encoder;
2156
extern AVCodec pgmyuv_encoder;
2157
extern AVCodec pbm_encoder;
2158
extern AVCodec pam_encoder;
2159
extern AVCodec mpeg4_encoder;
2160
extern AVCodec msmpeg4v1_encoder;
2161
extern AVCodec msmpeg4v2_encoder;
2162
extern AVCodec msmpeg4v3_encoder;
2163
extern AVCodec wmv1_encoder;
2164
extern AVCodec wmv2_encoder;
2165
extern AVCodec huffyuv_encoder;
2166
extern AVCodec ffvhuff_encoder;
2167
extern AVCodec h264_encoder;
2168
extern AVCodec asv1_encoder;
2169
extern AVCodec asv2_encoder;
2170
extern AVCodec vcr1_encoder;
2171
extern AVCodec ffv1_encoder;
2172
extern AVCodec snow_encoder;
2173
extern AVCodec vorbis_encoder;
2174
extern AVCodec mdec_encoder;
2175
extern AVCodec zlib_encoder;
2176
extern AVCodec sonic_encoder;
2177
extern AVCodec sonic_ls_encoder;
2178
extern AVCodec svq1_encoder;
2179
extern AVCodec x264_encoder;
2180

    
2181
extern AVCodec gif_decoder;
2182
extern AVCodec h263_decoder;
2183
extern AVCodec h261_decoder;
2184
extern AVCodec mpeg4_decoder;
2185
extern AVCodec msmpeg4v1_decoder;
2186
extern AVCodec msmpeg4v2_decoder;
2187
extern AVCodec msmpeg4v3_decoder;
2188
extern AVCodec wmv1_decoder;
2189
extern AVCodec wmv2_decoder;
2190
extern AVCodec vc1_decoder;
2191
extern AVCodec wmv3_decoder;
2192
extern AVCodec mpeg1video_decoder;
2193
extern AVCodec mpeg2video_decoder;
2194
extern AVCodec mpegvideo_decoder;
2195
extern AVCodec mpeg_xvmc_decoder;
2196
extern AVCodec h263i_decoder;
2197
extern AVCodec flv_decoder;
2198
extern AVCodec rv10_decoder;
2199
extern AVCodec rv20_decoder;
2200
extern AVCodec rv30_decoder;
2201
extern AVCodec rv40_decoder;
2202
extern AVCodec svq1_decoder;
2203
extern AVCodec svq3_decoder;
2204
extern AVCodec dvvideo_decoder;
2205
extern AVCodec wmav1_decoder;
2206
extern AVCodec wmav2_decoder;
2207
extern AVCodec mjpeg_decoder;
2208
extern AVCodec mjpegb_decoder;
2209
extern AVCodec sp5x_decoder;
2210
extern AVCodec png_decoder;
2211
extern AVCodec mp2_decoder;
2212
extern AVCodec mp3_decoder;
2213
extern AVCodec mp3adu_decoder;
2214
extern AVCodec mp3on4_decoder;
2215
extern AVCodec qdm2_decoder;
2216
extern AVCodec cook_decoder;
2217
extern AVCodec truespeech_decoder;
2218
extern AVCodec tta_decoder;
2219
extern AVCodec mace3_decoder;
2220
extern AVCodec mace6_decoder;
2221
extern AVCodec huffyuv_decoder;
2222
extern AVCodec ffvhuff_decoder;
2223
extern AVCodec oggvorbis_decoder;
2224
extern AVCodec cyuv_decoder;
2225
extern AVCodec h264_decoder;
2226
extern AVCodec indeo3_decoder;
2227
extern AVCodec vp3_decoder;
2228
extern AVCodec theora_decoder;
2229
extern AVCodec vp5_decoder;
2230
extern AVCodec vp6_decoder;
2231
extern AVCodec vp6f_decoder;
2232
extern AVCodec amr_nb_decoder;
2233
extern AVCodec amr_nb_encoder;
2234
extern AVCodec amr_wb_encoder;
2235
extern AVCodec amr_wb_decoder;
2236
extern AVCodec aac_decoder;
2237
extern AVCodec mpeg4aac_decoder;
2238
extern AVCodec asv1_decoder;
2239
extern AVCodec asv2_decoder;
2240
extern AVCodec vcr1_decoder;
2241
extern AVCodec cljr_decoder;
2242
extern AVCodec ffv1_decoder;
2243
extern AVCodec snow_decoder;
2244
extern AVCodec fourxm_decoder;
2245
extern AVCodec mdec_decoder;
2246
extern AVCodec roq_decoder;
2247
extern AVCodec interplay_video_decoder;
2248
extern AVCodec xan_wc3_decoder;
2249
extern AVCodec rpza_decoder;
2250
extern AVCodec cinepak_decoder;
2251
extern AVCodec msrle_decoder;
2252
extern AVCodec msvideo1_decoder;
2253
extern AVCodec vqa_decoder;
2254
extern AVCodec idcin_decoder;
2255
extern AVCodec eightbps_decoder;
2256
extern AVCodec smc_decoder;
2257
extern AVCodec flic_decoder;
2258
extern AVCodec vmdvideo_decoder;
2259
extern AVCodec vmdaudio_decoder;
2260
extern AVCodec truemotion1_decoder;
2261
extern AVCodec truemotion2_decoder;
2262
extern AVCodec mszh_decoder;
2263
extern AVCodec zlib_decoder;
2264
extern AVCodec ra_144_decoder;
2265
extern AVCodec ra_288_decoder;
2266
extern AVCodec roq_dpcm_decoder;
2267
extern AVCodec interplay_dpcm_decoder;
2268
extern AVCodec xan_dpcm_decoder;
2269
extern AVCodec sol_dpcm_decoder;
2270
extern AVCodec sonic_decoder;
2271
extern AVCodec qtrle_decoder;
2272
extern AVCodec flac_decoder;
2273
extern AVCodec tscc_decoder;
2274
extern AVCodec cscd_decoder;
2275
extern AVCodec nuv_decoder;
2276
extern AVCodec ulti_decoder;
2277
extern AVCodec qdraw_decoder;
2278
extern AVCodec xl_decoder;
2279
extern AVCodec qpeg_decoder;
2280
extern AVCodec shorten_decoder;
2281
extern AVCodec loco_decoder;
2282
extern AVCodec wnv1_decoder;
2283
extern AVCodec aasc_decoder;
2284
extern AVCodec alac_decoder;
2285
extern AVCodec ws_snd1_decoder;
2286
extern AVCodec indeo2_decoder;
2287
extern AVCodec vorbis_decoder;
2288
extern AVCodec fraps_decoder;
2289
extern AVCodec libgsm_encoder;
2290
extern AVCodec libgsm_decoder;
2291
extern AVCodec bmp_decoder;
2292
extern AVCodec mmvideo_decoder;
2293
extern AVCodec zmbv_decoder;
2294
extern AVCodec avs_decoder;
2295
extern AVCodec smacker_decoder;
2296
extern AVCodec smackaud_decoder;
2297
extern AVCodec kmvc_decoder;
2298
extern AVCodec flashsv_decoder;
2299
extern AVCodec cavs_decoder;
2300
extern AVCodec vmnc_decoder;
2301
extern AVCodec wavpack_decoder;
2302
extern AVCodec targa_decoder;
2303
extern AVCodec dsicinvideo_decoder;
2304
extern AVCodec dsicinaudio_decoder;
2305
extern AVCodec tiertexseqvideo_decoder;
2306
extern AVCodec tiff_decoder;
2307

    
2308
/* pcm codecs */
2309
#define PCM_CODEC(id, name) \
2310
extern AVCodec name ## _decoder; \
2311
extern AVCodec name ## _encoder
2312

    
2313
PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2314
PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2315
PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2316
PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2317
PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2318
PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2319
PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2320
PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2321
PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2322
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2323
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2324
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2325
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2326
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2327
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2328
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2329
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2330

    
2331
/* adpcm codecs */
2332

    
2333
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2334
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2335
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2336
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2337
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2338
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2339
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2340
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2341
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2342
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2343
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2344
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2345
PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2346
PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2347
PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2348
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2349
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2350
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2351

    
2352
#undef PCM_CODEC
2353

    
2354
/* dummy raw video codec */
2355
extern AVCodec rawvideo_encoder;
2356
extern AVCodec rawvideo_decoder;
2357

    
2358
/* the following codecs use external GPL libs */
2359
extern AVCodec ac3_decoder;
2360
extern AVCodec dts_decoder;
2361

    
2362
/* subtitles */
2363
extern AVCodec dvdsub_encoder;
2364
extern AVCodec dvdsub_decoder;
2365
extern AVCodec dvbsub_encoder;
2366
extern AVCodec dvbsub_decoder;
2367

    
2368
/* resample.c */
2369

    
2370
struct ReSampleContext;
2371
struct AVResampleContext;
2372

    
2373
typedef struct ReSampleContext ReSampleContext;
2374

    
2375
ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2376
                                     int output_rate, int input_rate);
2377
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2378
void audio_resample_close(ReSampleContext *s);
2379

    
2380
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2381
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2382
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2383
void av_resample_close(struct AVResampleContext *c);
2384

    
2385
/* YUV420 format is assumed ! */
2386

    
2387
struct ImgReSampleContext;
2388

    
2389
typedef struct ImgReSampleContext ImgReSampleContext;
2390

    
2391
ImgReSampleContext *img_resample_init(int output_width, int output_height,
2392
                                      int input_width, int input_height);
2393

    
2394
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2395
                                      int iwidth, int iheight,
2396
                                      int topBand, int bottomBand,
2397
                                      int leftBand, int rightBand,
2398
                                      int padtop, int padbottom,
2399
                                      int padleft, int padright);
2400

    
2401

    
2402
void img_resample(ImgReSampleContext *s,
2403
                  AVPicture *output, const AVPicture *input);
2404

    
2405
void img_resample_close(ImgReSampleContext *s);
2406

    
2407
/**
2408
 * Allocate memory for a picture.  Call avpicture_free to free it.
2409
 *
2410
 * @param picture the picture to be filled in.
2411
 * @param pix_fmt the format of the picture.
2412
 * @param width the width of the picture.
2413
 * @param height the height of the picture.
2414
 * @return 0 if successful, -1 if not.
2415
 */
2416
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2417

    
2418
/* Free a picture previously allocated by avpicture_alloc. */
2419
void avpicture_free(AVPicture *picture);
2420

    
2421
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2422
                   int pix_fmt, int width, int height);
2423
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2424
                     unsigned char *dest, int dest_size);
2425
int avpicture_get_size(int pix_fmt, int width, int height);
2426
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2427
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2428
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2429
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2430
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2431

    
2432
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
2433
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
2434
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
2435
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
2436
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
2437
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2438

    
2439
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2440
                             int has_alpha);
2441
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2442
                              int has_alpha, int *loss_ptr);
2443

    
2444
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2445
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2446
int img_get_alpha_info(const AVPicture *src,
2447
                       int pix_fmt, int width, int height);
2448

    
2449
/* convert among pixel formats */
2450
int img_convert(AVPicture *dst, int dst_pix_fmt,
2451
                const AVPicture *src, int pix_fmt,
2452
                int width, int height);
2453

    
2454
/* deinterlace a picture */
2455
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2456
                          int pix_fmt, int width, int height);
2457

    
2458
/* external high level API */
2459

    
2460
extern AVCodec *first_avcodec;
2461

    
2462
/* returns LIBAVCODEC_VERSION_INT constant */
2463
unsigned avcodec_version(void);
2464
/* returns LIBAVCODEC_BUILD constant */
2465
unsigned avcodec_build(void);
2466
void avcodec_init(void);
2467

    
2468
void register_avcodec(AVCodec *format);
2469
AVCodec *avcodec_find_encoder(enum CodecID id);
2470
AVCodec *avcodec_find_encoder_by_name(const char *name);
2471
AVCodec *avcodec_find_decoder(enum CodecID id);
2472
AVCodec *avcodec_find_decoder_by_name(const char *name);
2473
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2474

    
2475
void avcodec_get_context_defaults(AVCodecContext *s);
2476
AVCodecContext *avcodec_alloc_context(void);
2477
void avcodec_get_frame_defaults(AVFrame *pic);
2478
AVFrame *avcodec_alloc_frame(void);
2479

    
2480
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2481
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2482
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2483
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2484
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2485
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2486

    
2487
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2488
void avcodec_thread_free(AVCodecContext *s);
2489
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2490
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2491
//FIXME func typedef
2492

    
2493
/**
2494
 * opens / inits the AVCodecContext.
2495
 * not thread save!
2496
 */
2497
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2498

    
2499
/**
2500
 * Decode an audio frame.
2501
 *
2502
 * @param avctx the codec context.
2503
 * @param samples output buffer, 16 byte aligned
2504
 * @param frame_size_ptr the output buffer size in bytes, zero if no frame could be compressed
2505
 * @param buf input buffer, 16 byte aligned
2506
 * @param buf_size the input buffer size
2507
 * @return 0 if successful, -1 if not.
2508
 */
2509

    
2510
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2511
                         int *frame_size_ptr,
2512
                         uint8_t *buf, int buf_size);
2513
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2514
                         int *got_picture_ptr,
2515
                         uint8_t *buf, int buf_size);
2516
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2517
                            int *got_sub_ptr,
2518
                            const uint8_t *buf, int buf_size);
2519
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2520
                        int *data_size_ptr,
2521
                        uint8_t *buf, int buf_size);
2522
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2523
                         const short *samples);
2524
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2525
                         const AVFrame *pict);
2526
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2527
                            const AVSubtitle *sub);
2528

    
2529
int avcodec_close(AVCodecContext *avctx);
2530

    
2531
void avcodec_register_all(void);
2532

    
2533
void avcodec_flush_buffers(AVCodecContext *avctx);
2534

    
2535
void avcodec_default_free_buffers(AVCodecContext *s);
2536

    
2537
/* misc usefull functions */
2538

    
2539
/**
2540
 * returns a single letter to describe the picture type
2541
 */
2542
char av_get_pict_type_char(int pict_type);
2543

    
2544
/**
2545
 * returns codec bits per sample
2546
 */
2547
int av_get_bits_per_sample(enum CodecID codec_id);
2548

    
2549
/* frame parsing */
2550
typedef struct AVCodecParserContext {
2551
    void *priv_data;
2552
    struct AVCodecParser *parser;
2553
    int64_t frame_offset; /* offset of the current frame */
2554
    int64_t cur_offset; /* current offset
2555
                           (incremented by each av_parser_parse()) */
2556
    int64_t last_frame_offset; /* offset of the last frame */
2557
    /* video info */
2558
    int pict_type; /* XXX: put it back in AVCodecContext */
2559
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2560
    int64_t pts;     /* pts of the current frame */
2561
    int64_t dts;     /* dts of the current frame */
2562

    
2563
    /* private data */
2564
    int64_t last_pts;
2565
    int64_t last_dts;
2566
    int fetch_timestamp;
2567

    
2568
#define AV_PARSER_PTS_NB 4
2569
    int cur_frame_start_index;
2570
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2571
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2572
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2573

    
2574
    int flags;
2575
#define PARSER_FLAG_COMPLETE_FRAMES           0x0001
2576
} AVCodecParserContext;
2577

    
2578
typedef struct AVCodecParser {
2579
    int codec_ids[5]; /* several codec IDs are permitted */
2580
    int priv_data_size;
2581
    int (*parser_init)(AVCodecParserContext *s);
2582
    int (*parser_parse)(AVCodecParserContext *s,
2583
                        AVCodecContext *avctx,
2584
                        uint8_t **poutbuf, int *poutbuf_size,
2585
                        const uint8_t *buf, int buf_size);
2586
    void (*parser_close)(AVCodecParserContext *s);
2587
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2588
    struct AVCodecParser *next;
2589
} AVCodecParser;
2590

    
2591
extern AVCodecParser *av_first_parser;
2592

    
2593
void av_register_codec_parser(AVCodecParser *parser);
2594
AVCodecParserContext *av_parser_init(int codec_id);
2595
int av_parser_parse(AVCodecParserContext *s,
2596
                    AVCodecContext *avctx,
2597
                    uint8_t **poutbuf, int *poutbuf_size,
2598
                    const uint8_t *buf, int buf_size,
2599
                    int64_t pts, int64_t dts);
2600
int av_parser_change(AVCodecParserContext *s,
2601
                     AVCodecContext *avctx,
2602
                     uint8_t **poutbuf, int *poutbuf_size,
2603
                     const uint8_t *buf, int buf_size, int keyframe);
2604
void av_parser_close(AVCodecParserContext *s);
2605

    
2606
extern AVCodecParser mpegvideo_parser;
2607
extern AVCodecParser mpeg4video_parser;
2608
extern AVCodecParser cavsvideo_parser;
2609
extern AVCodecParser h261_parser;
2610
extern AVCodecParser h263_parser;
2611
extern AVCodecParser h264_parser;
2612
extern AVCodecParser mjpeg_parser;
2613
extern AVCodecParser pnm_parser;
2614
extern AVCodecParser mpegaudio_parser;
2615
extern AVCodecParser ac3_parser;
2616
extern AVCodecParser dvdsub_parser;
2617
extern AVCodecParser dvbsub_parser;
2618
extern AVCodecParser aac_parser;
2619

    
2620

    
2621
typedef struct AVBitStreamFilterContext {
2622
    void *priv_data;
2623
    struct AVBitStreamFilter *filter;
2624
    AVCodecParserContext *parser;
2625
    struct AVBitStreamFilterContext *next;
2626
} AVBitStreamFilterContext;
2627

    
2628

    
2629
typedef struct AVBitStreamFilter {
2630
    const char *name;
2631
    int priv_data_size;
2632
    int (*filter)(AVBitStreamFilterContext *bsfc,
2633
                  AVCodecContext *avctx, const char *args,
2634
                  uint8_t **poutbuf, int *poutbuf_size,
2635
                  const uint8_t *buf, int buf_size, int keyframe);
2636
    struct AVBitStreamFilter *next;
2637
} AVBitStreamFilter;
2638

    
2639
extern AVBitStreamFilter *av_first_bitstream_filter;
2640

    
2641
void av_register_bitstream_filter(AVBitStreamFilter *bsf);
2642
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
2643
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
2644
                               AVCodecContext *avctx, const char *args,
2645
                               uint8_t **poutbuf, int *poutbuf_size,
2646
                               const uint8_t *buf, int buf_size, int keyframe);
2647
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
2648

    
2649
extern AVBitStreamFilter dump_extradata_bsf;
2650
extern AVBitStreamFilter remove_extradata_bsf;
2651
extern AVBitStreamFilter noise_bsf;
2652

    
2653

    
2654
/* memory */
2655
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2656
/* for static data only */
2657
/* call av_free_static to release all staticaly allocated tables */
2658
void av_free_static(void);
2659
void *av_mallocz_static(unsigned int size);
2660
void *av_realloc_static(void *ptr, unsigned int size);
2661

    
2662
void img_copy(AVPicture *dst, const AVPicture *src,
2663
              int pix_fmt, int width, int height);
2664

    
2665
int img_crop(AVPicture *dst, const AVPicture *src,
2666
             int pix_fmt, int top_band, int left_band);
2667

    
2668
int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
2669
            int padtop, int padbottom, int padleft, int padright, int *color);
2670

    
2671
/* endian macros */
2672
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2673
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2674
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2675
                   (((uint8_t*)(x))[1] << 16) | \
2676
                   (((uint8_t*)(x))[2] << 8) | \
2677
                    ((uint8_t*)(x))[3])
2678
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2679
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2680
                   (((uint8_t*)(x))[2] << 16) | \
2681
                   (((uint8_t*)(x))[1] << 8) | \
2682
                    ((uint8_t*)(x))[0])
2683
#endif
2684

    
2685
extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2686

    
2687
#ifdef __cplusplus
2688
}
2689
#endif
2690

    
2691
#endif /* AVCODEC_H */