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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 "common.h"
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#include "rational.h"
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#include <sys/types.h> /* size_t */
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#define FFMPEG_VERSION_INT     0x000409
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#define FFMPEG_VERSION         "CVS"
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#define LIBAVCODEC_BUILD       4758
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#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
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#define LIBAVCODEC_VERSION     FFMPEG_VERSION
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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_IDENT        "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
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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_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_VC9,
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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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    /* 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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    /* 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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    /* 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_OGGTHEORA= 0x16000, 
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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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/**
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 * Pixel format. Notes: 
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 *
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 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
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 * color is put together as:
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 *  (A << 24) | (R << 16) | (G << 8) | B
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 * This is stored as BGRA on little endian CPU architectures and ARGB on
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 * big endian CPUs.
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 *
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 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
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 * image data is stored in AVFrame.data[0]. The palette is transported in
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 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
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 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
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 * also endian-specific). Note also that the individual RGB palette
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 * components stored in AVFrame.data[1] should be in the range 0..255.
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 * This is important as many custom PAL8 video codecs that were designed
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 * to run on the IBM VGA graphics adapter use 6-bit palette components.
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 */
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enum PixelFormat {
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    PIX_FMT_NONE= -1,
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    PIX_FMT_YUV420P,   ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
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    PIX_FMT_YUV422,    ///< Packed pixel, Y0 Cb Y1 Cr 
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    PIX_FMT_RGB24,     ///< Packed pixel, 3 bytes per pixel, RGBRGB...
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    PIX_FMT_BGR24,     ///< Packed pixel, 3 bytes per pixel, BGRBGR...
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    PIX_FMT_YUV422P,   ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
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    PIX_FMT_YUV444P,   ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
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    PIX_FMT_RGBA32,    ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
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    PIX_FMT_YUV410P,   ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
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    PIX_FMT_YUV411P,   ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
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    PIX_FMT_RGB565,    ///< always stored in cpu endianness 
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    PIX_FMT_RGB555,    ///< always stored in cpu endianness, most significant bit to 1 
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    PIX_FMT_GRAY8,
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    PIX_FMT_MONOWHITE, ///< 0 is white 
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    PIX_FMT_MONOBLACK, ///< 0 is black 
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    PIX_FMT_PAL8,      ///< 8 bit with RGBA palette 
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    PIX_FMT_YUVJ420P,  ///< Planar YUV 4:2:0 full scale (jpeg)
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    PIX_FMT_YUVJ422P,  ///< Planar YUV 4:2:2 full scale (jpeg)
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    PIX_FMT_YUVJ444P,  ///< Planar YUV 4:4:4 full scale (jpeg)
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    PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
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    PIX_FMT_XVMC_MPEG2_IDCT,
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    PIX_FMT_UYVY422,   ///< Packed pixel, Cb Y0 Cr Y1 
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    PIX_FMT_UYVY411,   ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
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    PIX_FMT_NB,
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};
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/* currently unused, may be used if 24/32 bits samples ever supported */
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enum SampleFormat {
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    SAMPLE_FMT_S16 = 0,         ///< signed 16 bits 
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    SAMPLE_FMT_S32,             ///< signed 32 bits 
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    SAMPLE_FMT_FLT,             ///< float
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    SAMPLE_FMT_DBL,             ///< double
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};
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/* in bytes */
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#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
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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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};
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enum AVRounding {
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    AV_ROUND_ZERO     = 0, ///< round toward zero
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    AV_ROUND_INF      = 1, ///< round away from zero
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    AV_ROUND_DOWN     = 2, ///< round toward -infinity
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    AV_ROUND_UP       = 3, ///< round toward +infinity
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    AV_ROUND_NEAR_INF = 5, ///< round to nearest and halfway cases away from zero
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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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/* only for ME compatiblity with old apps */
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extern int motion_estimation_method;
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#define FF_MAX_B_FRAMES 8
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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     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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/* 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
368
 */
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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.
378
 * if this is not set, the codec is guranteed to never be feeded with NULL data
379
 */
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#define CODEC_CAP_DELAY           0x0020
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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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/**
407
 * Pan Scan area.
408
 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
409
 */
410
typedef struct AVPanScan{
411
    /**
412
     * id.
413
     * - encoding: set by user.
414
     * - decoding: set by lavc
415
     */
416
    int id;
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418
    /**
419
     * width and height in 1/16 pel
420
     * - encoding: set by user.
421
     * - decoding: set by lavc
422
     */
423
    int width;
424
    int height;
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426
    /**
427
     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
428
     * - encoding: set by user.
429
     * - decoding: set by lavc
430
     */
431
    int16_t position[3][2];
432
}AVPanScan;
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434
#define FF_COMMON_FRAME \
435
    /**\
436
     * pointer to the picture planes.\
437
     * this might be different from the first allocated byte\
438
     * - encoding: \
439
     * - decoding: \
440
     */\
441
    uint8_t *data[4];\
442
    int linesize[4];\
443
    /**\
444
     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
445
     * this isn't used by lavc unless the default get/release_buffer() is used\
446
     * - encoding: \
447
     * - decoding: \
448
     */\
449
    uint8_t *base[4];\
450
    /**\
451
     * 1 -> keyframe, 0-> not\
452
     * - encoding: set by lavc\
453
     * - decoding: set by lavc\
454
     */\
455
    int key_frame;\
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\
457
    /**\
458
     * picture type of the frame, see ?_TYPE below.\
459
     * - encoding: set by lavc for coded_picture (and set by user for input)\
460
     * - decoding: set by lavc\
461
     */\
462
    int pict_type;\
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\
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    /**\
465
     * presentation timestamp in time_base units (time when frame should be shown to user)\
466
     * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
467
     * - encoding: MUST be set by user\
468
     * - decoding: set by lavc\
469
     */\
470
    int64_t pts;\
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\
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    /**\
473
     * picture number in bitstream order.\
474
     * - encoding: set by\
475
     * - decoding: set by lavc\
476
     */\
477
    int coded_picture_number;\
478
    /**\
479
     * picture number in display order.\
480
     * - encoding: set by\
481
     * - decoding: set by lavc\
482
     */\
483
    int display_picture_number;\
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\
485
    /**\
486
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
487
     * - encoding: set by lavc for coded_picture (and set by user for input)\
488
     * - decoding: set by lavc\
489
     */\
490
    int quality; \
491
\
492
    /**\
493
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
494
     * set to INT_MAX if the buffer has not been used yet \
495
     * - encoding: unused\
496
     * - decoding: MUST be set by get_buffer()\
497
     */\
498
    int age;\
499
\
500
    /**\
501
     * is this picture used as reference\
502
     * - encoding: unused\
503
     * - decoding: set by lavc (before get_buffer() call))\
504
     */\
505
    int reference;\
506
\
507
    /**\
508
     * QP table\
509
     * - encoding: unused\
510
     * - decoding: set by lavc\
511
     */\
512
    int8_t *qscale_table;\
513
    /**\
514
     * QP store stride\
515
     * - encoding: unused\
516
     * - decoding: set by lavc\
517
     */\
518
    int qstride;\
519
\
520
    /**\
521
     * mbskip_table[mb]>=1 if MB didnt change\
522
     * stride= mb_width = (width+15)>>4\
523
     * - encoding: unused\
524
     * - decoding: set by lavc\
525
     */\
526
    uint8_t *mbskip_table;\
527
\
528
    /**\
529
     * Motion vector table.\
530
     * @code\
531
     * example:\
532
     * int mv_sample_log2= 4 - motion_subsample_log2;\
533
     * int mb_width= (width+15)>>4;\
534
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
535
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
536
     * @endcode\
537
     * - encoding: set by user\
538
     * - decoding: set by lavc\
539
     */\
540
    int16_t (*motion_val[2])[2];\
541
\
542
    /**\
543
     * Macroblock type table\
544
     * mb_type_base + mb_width + 2\
545
     * - encoding: set by user\
546
     * - decoding: set by lavc\
547
     */\
548
    uint32_t *mb_type;\
549
\
550
    /**\
551
     * log2 of the size of the block which a single vector in motion_val represents: \
552
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
553
     * - encoding: unused\
554
     * - decoding: set by lavc\
555
     */\
556
    uint8_t motion_subsample_log2;\
557
\
558
    /**\
559
     * for some private data of the user\
560
     * - encoding: unused\
561
     * - decoding: set by user\
562
     */\
563
    void *opaque;\
564
\
565
    /**\
566
     * error\
567
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
568
     * - decoding: unused\
569
     */\
570
    uint64_t error[4];\
571
\
572
    /**\
573
     * type of the buffer (to keep track of who has to dealloc data[*])\
574
     * - encoding: set by the one who allocs it\
575
     * - decoding: set by the one who allocs it\
576
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
577
     */\
578
    int type;\
579
    \
580
    /**\
581
     * when decoding, this signal how much the picture must be delayed.\
582
     * extra_delay = repeat_pict / (2*fps)\
583
     * - encoding: unused\
584
     * - decoding: set by lavc\
585
     */\
586
    int repeat_pict;\
587
    \
588
    /**\
589
     * \
590
     */\
591
    int qscale_type;\
592
    \
593
    /**\
594
     * The content of the picture is interlaced.\
595
     * - encoding: set by user\
596
     * - decoding: set by lavc (default 0)\
597
     */\
598
    int interlaced_frame;\
599
    \
600
    /**\
601
     * if the content is interlaced, is top field displayed first.\
602
     * - encoding: set by user\
603
     * - decoding: set by lavc\
604
     */\
605
    int top_field_first;\
606
    \
607
    /**\
608
     * Pan scan.\
609
     * - encoding: set by user\
610
     * - decoding: set by lavc\
611
     */\
612
    AVPanScan *pan_scan;\
613
    \
614
    /**\
615
     * tell user application that palette has changed from previous frame.\
616
     * - encoding: ??? (no palette-enabled encoder yet)\
617
     * - decoding: set by lavc (default 0)\
618
     */\
619
    int palette_has_changed;\
620
    \
621
    /**\
622
     * Codec suggestion on buffer type if != 0\
623
     * - encoding: unused\
624
     * - decoding: set by lavc (before get_buffer() call))\
625
     */\
626
    int buffer_hints;\
627
\
628
    /**\
629
     * DCT coeffitients\
630
     * - encoding: unused\
631
     * - decoding: set by lavc\
632
     */\
633
    short *dct_coeff;\
634
\
635
    /**\
636
     * Motion referece frame index\
637
     * - encoding: set by user\
638
     * - decoding: set by lavc\
639
     */\
640
    int8_t *ref_index[2];
641

    
642
#define FF_QSCALE_TYPE_MPEG1        0
643
#define FF_QSCALE_TYPE_MPEG2        1
644

    
645
#define FF_BUFFER_TYPE_INTERNAL 1
646
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
647
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
648
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, don't dealloc anything
649

    
650

    
651
#define FF_I_TYPE 1 // Intra
652
#define FF_P_TYPE 2 // Predicted
653
#define FF_B_TYPE 3 // Bi-dir predicted
654
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
655
#define FF_SI_TYPE 5
656
#define FF_SP_TYPE 6
657

    
658
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
659
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
660
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
661
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
662

    
663
/**
664
 * Audio Video Frame.
665
 */
666
typedef struct AVFrame {
667
    FF_COMMON_FRAME
668
} AVFrame;
669

    
670
#define DEFAULT_FRAME_RATE_BASE 1001000
671

    
672
/**
673
 * Used by av_log
674
 */
675
typedef struct AVCLASS AVClass;
676
struct AVCLASS {
677
    const char* class_name;
678
    const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
679
                                        or AVFormatContext, which begin with an AVClass.
680
                                        Needed because av_log is in libavcodec and has no visibility
681
                                        of AVIn/OutputFormat */
682
};
683

    
684
/**
685
 * main external api structure.
686
 */
687
typedef struct AVCodecContext {
688
    /**
689
     * Info on struct for av_log
690
     * - set by avcodec_alloc_context
691
     */
692
    AVClass *av_class;
693
    /**
694
     * the average bitrate.
695
     * - encoding: set by user. unused for constant quantizer encoding
696
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
697
     */
698
    int bit_rate;
699

    
700
    /**
701
     * number of bits the bitstream is allowed to diverge from the reference.
702
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
703
     * - encoding: set by user. unused for constant quantizer encoding
704
     * - decoding: unused
705
     */
706
    int bit_rate_tolerance; 
707

    
708
    /**
709
     * CODEC_FLAG_*.
710
     * - encoding: set by user.
711
     * - decoding: set by user.
712
     */
713
    int flags;
714

    
715
    /**
716
     * some codecs needs additionnal format info. It is stored here
717
     * - encoding: set by user. 
718
     * - decoding: set by lavc. (FIXME is this ok?)
719
     */
720
    int sub_id;
721

    
722
    /**
723
     * motion estimation algorithm used for video coding.
724
     * - encoding: MUST be set by user.
725
     * - decoding: unused
726
     */
727
    int me_method;
728

    
729
    /**
730
     * some codecs need / can use extra-data like huffman tables.
731
     * mjpeg: huffman tables
732
     * rv10: additional flags
733
     * mpeg4: global headers (they can be in the bitstream or here)
734
     * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
735
     * then extradata_size to avoid prolems if its read with the bitstream reader
736
     * - encoding: set/allocated/freed by lavc.
737
     * - decoding: set/allocated/freed by user.
738
     */
739
    void *extradata;
740
    int extradata_size;
741
    
742
    /* video only */
743
    /**
744
     * time base in which the timestamps are specified.
745
     * - encoding: MUST be set by user
746
     * - decoding: set by lavc.
747
     */
748
    AVRational time_base;
749
    
750
    /**
751
     * picture width / height.
752
     * - encoding: MUST be set by user. 
753
     * - decoding: set by lavc.
754
     * Note, for compatibility its possible to set this instead of 
755
     * coded_width/height before decoding
756
     */
757
    int width, height;
758
    
759
#define FF_ASPECT_EXTENDED 15
760

    
761
    /**
762
     * the number of pictures in a group of pitures, or 0 for intra_only.
763
     * - encoding: set by user.
764
     * - decoding: unused
765
     */
766
    int gop_size;
767

    
768
    /**
769
     * pixel format, see PIX_FMT_xxx.
770
     * - encoding: set by user.
771
     * - decoding: set by lavc.
772
     */
773
    enum PixelFormat pix_fmt;
774
 
775
    /**
776
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
777
     * has to read frames at native frame rate.
778
     * - encoding: set by user.
779
     * - decoding: unused.
780
     */
781
    int rate_emu;
782
       
783
    /**
784
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
785
     * decoder to draw an horizontal band. It improve cache usage. Not
786
     * all codecs can do that. You must check the codec capabilities
787
     * before
788
     * - encoding: unused
789
     * - decoding: set by user.
790
     * @param height the height of the slice
791
     * @param y the y position of the slice
792
     * @param type 1->top field, 2->bottom field, 3->frame
793
     * @param offset offset into the AVFrame.data from which the slice should be read
794
     */
795
    void (*draw_horiz_band)(struct AVCodecContext *s,
796
                            const AVFrame *src, int offset[4],
797
                            int y, int type, int height);
798

    
799
    /* audio only */
800
    int sample_rate; ///< samples per sec 
801
    int channels;
802

    
803
    /**
804
     * audio sample format.
805
     * - encoding: set by user.
806
     * - decoding: set by lavc.
807
     */
808
    enum SampleFormat sample_fmt;  ///< sample format, currenly unused 
809

    
810
    /* the following data should not be initialized */
811
    /**
812
     * samples per packet. initialized when calling 'init' 
813
     */
814
    int frame_size;
815
    int frame_number;   ///< audio or video frame number 
816
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
817
    
818
    /**
819
     * number of frames the decoded output will be delayed relative to 
820
     * the encoded input.
821
     * - encoding: set by lavc.
822
     * - decoding: unused
823
     */
824
    int delay;
825
    
826
    /* - encoding parameters */
827
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
828
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
829
    
830
    /**
831
     * minimum quantizer.
832
     * - encoding: set by user.
833
     * - decoding: unused
834
     */
835
    int qmin;
836

    
837
    /**
838
     * maximum quantizer.
839
     * - encoding: set by user.
840
     * - decoding: unused
841
     */
842
    int qmax;
843

    
844
    /**
845
     * maximum quantizer difference etween frames.
846
     * - encoding: set by user.
847
     * - decoding: unused
848
     */
849
    int max_qdiff;
850

    
851
    /**
852
     * maximum number of b frames between non b frames.
853
     * note: the output will be delayed by max_b_frames+1 relative to the input
854
     * - encoding: set by user.
855
     * - decoding: unused
856
     */
857
    int max_b_frames;
858

    
859
    /**
860
     * qscale factor between ip and b frames.
861
     * - encoding: set by user.
862
     * - decoding: unused
863
     */
864
    float b_quant_factor;
865
    
866
    /** obsolete FIXME remove */
867
    int rc_strategy;
868
    int b_frame_strategy;
869

    
870
    /**
871
     * hurry up amount.
872
     * deprecated in favor of skip_idct and skip_frame
873
     * - encoding: unused
874
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
875
     */
876
    int hurry_up;
877
    
878
    struct AVCodec *codec;
879
    
880
    void *priv_data;
881

    
882
    /* unused, FIXME remove*/
883
    int rtp_mode;
884
    
885
    int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
886
                            /* do it's best to deliver a chunk with size    */
887
                            /* below rtp_payload_size, the chunk will start */
888
                            /* with a start code on some codecs like H.263  */
889
                            /* This doesn't take account of any particular  */
890
                            /* headers inside the transmited RTP payload    */
891

    
892
    
893
    /* The RTP callback: This function is called   */
894
    /* every time the encoder has a packet to send */
895
    /* Depends on the encoder if the data starts   */
896
    /* with a Start Code (it should) H.263 does.   */
897
    /* mb_nb contains the number of macroblocks    */
898
    /* encoded in the RTP payload                  */
899
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb); 
900

    
901
    /* statistics, used for 2-pass encoding */
902
    int mv_bits;
903
    int header_bits;
904
    int i_tex_bits;
905
    int p_tex_bits;
906
    int i_count;
907
    int p_count;
908
    int skip_count;
909
    int misc_bits;
910
    
911
    /**
912
     * number of bits used for the previously encoded frame.
913
     * - encoding: set by lavc
914
     * - decoding: unused
915
     */
916
    int frame_bits;
917

    
918
    /**
919
     * private data of the user, can be used to carry app specific stuff.
920
     * - encoding: set by user
921
     * - decoding: set by user
922
     */
923
    void *opaque;
924

    
925
    char codec_name[32];
926
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
927
    enum CodecID codec_id; /* see CODEC_ID_xxx */
928
    
929
    /**
930
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
931
     * this is used to workaround some encoder bugs
932
     * - encoding: set by user, if not then the default based on codec_id will be used
933
     * - decoding: set by user, will be converted to upper case by lavc during init
934
     */
935
    unsigned int codec_tag;
936
    
937
    /**
938
     * workaround bugs in encoders which sometimes cannot be detected automatically.
939
     * - encoding: set by user
940
     * - decoding: set by user
941
     */
942
    int workaround_bugs;
943
#define FF_BUG_AUTODETECT       1  ///< autodetection
944
#define FF_BUG_OLD_MSMPEG4      2
945
#define FF_BUG_XVID_ILACE       4
946
#define FF_BUG_UMP4             8
947
#define FF_BUG_NO_PADDING       16
948
#define FF_BUG_AMV              32
949
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
950
#define FF_BUG_QPEL_CHROMA      64
951
#define FF_BUG_STD_QPEL         128
952
#define FF_BUG_QPEL_CHROMA2     256
953
#define FF_BUG_DIRECT_BLOCKSIZE 512
954
#define FF_BUG_EDGE             1024
955
#define FF_BUG_HPEL_CHROMA      2048
956
#define FF_BUG_DC_CLIP          4096
957
#define FF_BUG_MS               8192 ///< workaround various bugs in microsofts broken decoders
958
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
959
        
960
    /**
961
     * luma single coeff elimination threshold.
962
     * - encoding: set by user
963
     * - decoding: unused
964
     */
965
    int luma_elim_threshold;
966
    
967
    /**
968
     * chroma single coeff elimination threshold.
969
     * - encoding: set by user
970
     * - decoding: unused
971
     */
972
    int chroma_elim_threshold;
973
    
974
    /**
975
     * strictly follow the std (MPEG4, ...).
976
     * - encoding: set by user
977
     * - decoding: unused
978
     */
979
    int strict_std_compliance;
980
#define FF_COMPLIANCE_VERY_STRICT   2 ///< strictly conform to a older more strict version of the spec or reference software
981
#define FF_COMPLIANCE_STRICT        1 ///< strictly conform to all the things in the spec no matter what consequences
982
#define FF_COMPLIANCE_NORMAL        0
983
#define FF_COMPLIANCE_INOFFICIAL   -1 ///< allow inofficial extensions
984
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
985

    
986
    /**
987
     * qscale offset between ip and b frames.
988
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
989
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
990
     * - encoding: set by user.
991
     * - decoding: unused
992
     */
993
    float b_quant_offset;
994
    
995
    /**
996
     * error resilience higher values will detect more errors but may missdetect
997
     * some more or less valid parts as errors.
998
     * - encoding: unused
999
     * - decoding: set by user
1000
     */
1001
    int error_resilience;
1002
#define FF_ER_CAREFULL        1
1003
#define FF_ER_COMPLIANT       2
1004
#define FF_ER_AGGRESSIVE      3
1005
#define FF_ER_VERY_AGGRESSIVE 4
1006
    
1007
    /**
1008
     * called at the beginning of each frame to get a buffer for it.
1009
     * if pic.reference is set then the frame will be read later by lavc
1010
     * avcodec_align_dimensions() should be used to find the required width and
1011
     * height, as they normally need to be rounded up to the next multiple of 16
1012
     * - encoding: unused
1013
     * - decoding: set by lavc, user can override
1014
     */
1015
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1016
    
1017
    /**
1018
     * called to release buffers which where allocated with get_buffer.
1019
     * a released buffer can be reused in get_buffer()
1020
     * pic.data[*] must be set to NULL
1021
     * - encoding: unused
1022
     * - decoding: set by lavc, user can override
1023
     */
1024
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1025

    
1026
    /**
1027
     * if 1 the stream has a 1 frame delay during decoding.
1028
     * - encoding: set by lavc
1029
     * - decoding: set by lavc
1030
     */
1031
    int has_b_frames;
1032

    
1033
    /**
1034
     * number of bytes per packet if constant and known or 0
1035
     * used by some WAV based audio codecs
1036
     */
1037
    int block_align;
1038
    
1039
    int parse_only; /* - decoding only: if true, only parsing is done
1040
                       (function avcodec_parse_frame()). The frame
1041
                       data is returned. Only MPEG codecs support this now. */
1042
    
1043
    /**
1044
     * 0-> h263 quant 1-> mpeg quant.
1045
     * - encoding: set by user.
1046
     * - decoding: unused
1047
     */
1048
    int mpeg_quant;
1049
    
1050
    /**
1051
     * pass1 encoding statistics output buffer.
1052
     * - encoding: set by lavc
1053
     * - decoding: unused
1054
     */
1055
    char *stats_out;
1056
    
1057
    /**
1058
     * pass2 encoding statistics input buffer.
1059
     * concatenated stuff from stats_out of pass1 should be placed here
1060
     * - encoding: allocated/set/freed by user
1061
     * - decoding: unused
1062
     */
1063
    char *stats_in;
1064
    
1065
    /**
1066
     * ratecontrol qmin qmax limiting method.
1067
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1068
     * - encoding: set by user.
1069
     * - decoding: unused
1070
     */
1071
    float rc_qsquish;
1072

    
1073
    float rc_qmod_amp;
1074
    int rc_qmod_freq;
1075
    
1076
    /**
1077
     * ratecontrol override, see RcOverride.
1078
     * - encoding: allocated/set/freed by user.
1079
     * - decoding: unused
1080
     */
1081
    RcOverride *rc_override;
1082
    int rc_override_count;
1083
    
1084
    /**
1085
     * rate control equation.
1086
     * - encoding: set by user
1087
     * - decoding: unused
1088
     */
1089
    char *rc_eq;
1090
    
1091
    /**
1092
     * maximum bitrate.
1093
     * - encoding: set by user.
1094
     * - decoding: unused
1095
     */
1096
    int rc_max_rate;
1097
    
1098
    /**
1099
     * minimum bitrate.
1100
     * - encoding: set by user.
1101
     * - decoding: unused
1102
     */
1103
    int rc_min_rate;
1104
    
1105
    /**
1106
     * decoder bitstream buffer size.
1107
     * - encoding: set by user.
1108
     * - decoding: unused
1109
     */
1110
    int rc_buffer_size;
1111
    float rc_buffer_aggressivity;
1112

    
1113
    /**
1114
     * qscale factor between p and i frames.
1115
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1116
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1117
     * - encoding: set by user.
1118
     * - decoding: unused
1119
     */
1120
    float i_quant_factor;
1121
    
1122
    /**
1123
     * qscale offset between p and i frames.
1124
     * - encoding: set by user.
1125
     * - decoding: unused
1126
     */
1127
    float i_quant_offset;
1128
    
1129
    /**
1130
     * initial complexity for pass1 ratecontrol.
1131
     * - encoding: set by user.
1132
     * - decoding: unused
1133
     */
1134
    float rc_initial_cplx;
1135

    
1136
    /**
1137
     * dct algorithm, see FF_DCT_* below.
1138
     * - encoding: set by user
1139
     * - decoding: unused
1140
     */
1141
    int dct_algo;
1142
#define FF_DCT_AUTO    0
1143
#define FF_DCT_FASTINT 1
1144
#define FF_DCT_INT     2
1145
#define FF_DCT_MMX     3
1146
#define FF_DCT_MLIB    4
1147
#define FF_DCT_ALTIVEC 5
1148
#define FF_DCT_FAAN    6
1149
    
1150
    /**
1151
     * luminance masking (0-> disabled).
1152
     * - encoding: set by user
1153
     * - decoding: unused
1154
     */
1155
    float lumi_masking;
1156
    
1157
    /**
1158
     * temporary complexity masking (0-> disabled).
1159
     * - encoding: set by user
1160
     * - decoding: unused
1161
     */
1162
    float temporal_cplx_masking;
1163
    
1164
    /**
1165
     * spatial complexity masking (0-> disabled).
1166
     * - encoding: set by user
1167
     * - decoding: unused
1168
     */
1169
    float spatial_cplx_masking;
1170
    
1171
    /**
1172
     * p block masking (0-> disabled).
1173
     * - encoding: set by user
1174
     * - decoding: unused
1175
     */
1176
    float p_masking;
1177

    
1178
    /**
1179
     * darkness masking (0-> disabled).
1180
     * - encoding: set by user
1181
     * - decoding: unused
1182
     */
1183
    float dark_masking;
1184
    
1185
    
1186
    /* for binary compatibility */
1187
    int unused;
1188
    
1189
    /**
1190
     * idct algorithm, see FF_IDCT_* below.
1191
     * - encoding: set by user
1192
     * - decoding: set by user
1193
     */
1194
    int idct_algo;
1195
#define FF_IDCT_AUTO         0
1196
#define FF_IDCT_INT          1
1197
#define FF_IDCT_SIMPLE       2
1198
#define FF_IDCT_SIMPLEMMX    3
1199
#define FF_IDCT_LIBMPEG2MMX  4
1200
#define FF_IDCT_PS2          5
1201
#define FF_IDCT_MLIB         6
1202
#define FF_IDCT_ARM          7
1203
#define FF_IDCT_ALTIVEC      8
1204
#define FF_IDCT_SH4          9
1205
#define FF_IDCT_SIMPLEARM    10
1206
#define FF_IDCT_H264         11
1207
#define FF_IDCT_VP3          12
1208
#define FF_IDCT_IPP          13
1209

    
1210
    /**
1211
     * slice count.
1212
     * - encoding: set by lavc
1213
     * - decoding: set by user (or 0)
1214
     */
1215
    int slice_count;
1216
    /**
1217
     * slice offsets in the frame in bytes.
1218
     * - encoding: set/allocated by lavc
1219
     * - decoding: set/allocated by user (or NULL)
1220
     */
1221
    int *slice_offset;
1222

    
1223
    /**
1224
     * error concealment flags.
1225
     * - encoding: unused
1226
     * - decoding: set by user
1227
     */
1228
    int error_concealment;
1229
#define FF_EC_GUESS_MVS   1
1230
#define FF_EC_DEBLOCK     2
1231

    
1232
    /**
1233
     * dsp_mask could be add used to disable unwanted CPU features
1234
     * CPU features (i.e. MMX, SSE. ...)
1235
     *
1236
     * with FORCE flag you may instead enable given CPU features
1237
     * (Dangerous: usable in case of misdetection, improper usage however will
1238
     * result into program crash)
1239
     */
1240
    unsigned dsp_mask;
1241
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1242
    /* lower 16 bits - CPU features */
1243
#ifdef HAVE_MMX
1244
#define FF_MM_MMX        0x0001 /* standard MMX */
1245
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1246
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1247
#define FF_MM_SSE        0x0008 /* SSE functions */
1248
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1249
#define FF_MM_3DNOWEXT        0x0020 /* AMD 3DNowExt */
1250
#endif /* HAVE_MMX */
1251
#ifdef HAVE_IWMMXT
1252
#define FF_MM_IWMMXT        0x0100 /* XScale IWMMXT */
1253
#endif /* HAVE_IWMMXT */
1254

    
1255
    /**
1256
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1257
     * - encoding: set by lavc
1258
     * - decoding: set by user
1259
     */
1260
     int bits_per_sample;
1261
    
1262
    /**
1263
     * prediction method (needed for huffyuv).
1264
     * - encoding: set by user
1265
     * - decoding: unused
1266
     */
1267
     int prediction_method;
1268
#define FF_PRED_LEFT   0
1269
#define FF_PRED_PLANE  1
1270
#define FF_PRED_MEDIAN 2
1271
    
1272
    /**
1273
     * sample aspect ratio (0 if unknown).
1274
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1275
     * - encoding: set by user.
1276
     * - decoding: set by lavc.
1277
     */
1278
    AVRational sample_aspect_ratio;
1279

    
1280
    /**
1281
     * the picture in the bitstream.
1282
     * - encoding: set by lavc
1283
     * - decoding: set by lavc
1284
     */
1285
    AVFrame *coded_frame;
1286

    
1287
    /**
1288
     * debug.
1289
     * - encoding: set by user.
1290
     * - decoding: set by user.
1291
     */
1292
    int debug;
1293
#define FF_DEBUG_PICT_INFO 1
1294
#define FF_DEBUG_RC        2
1295
#define FF_DEBUG_BITSTREAM 4
1296
#define FF_DEBUG_MB_TYPE   8
1297
#define FF_DEBUG_QP        16
1298
#define FF_DEBUG_MV        32
1299
#define FF_DEBUG_DCT_COEFF 0x00000040
1300
#define FF_DEBUG_SKIP      0x00000080
1301
#define FF_DEBUG_STARTCODE 0x00000100
1302
#define FF_DEBUG_PTS       0x00000200
1303
#define FF_DEBUG_ER        0x00000400
1304
#define FF_DEBUG_MMCO      0x00000800
1305
#define FF_DEBUG_BUGS      0x00001000
1306
#define FF_DEBUG_VIS_QP    0x00002000
1307
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1308
    
1309
    /**
1310
     * debug.
1311
     * - encoding: set by user.
1312
     * - decoding: set by user.
1313
     */
1314
    int debug_mv;
1315
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1316
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1317
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1318

    
1319
    /**
1320
     * error.
1321
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1322
     * - decoding: unused
1323
     */
1324
    uint64_t error[4];
1325
    
1326
    /**
1327
     * minimum MB quantizer.
1328
     * - encoding: unused
1329
     * - decoding: unused
1330
     */
1331
    int mb_qmin;
1332

    
1333
    /**
1334
     * maximum MB quantizer.
1335
     * - encoding: unused
1336
     * - decoding: unused
1337
     */
1338
    int mb_qmax;
1339
    
1340
    /**
1341
     * motion estimation compare function.
1342
     * - encoding: set by user.
1343
     * - decoding: unused
1344
     */
1345
    int me_cmp;
1346
    /**
1347
     * subpixel motion estimation compare function.
1348
     * - encoding: set by user.
1349
     * - decoding: unused
1350
     */
1351
    int me_sub_cmp;
1352
    /**
1353
     * macroblock compare function (not supported yet).
1354
     * - encoding: set by user.
1355
     * - decoding: unused
1356
     */
1357
    int mb_cmp;
1358
    /**
1359
     * interlaced dct compare function
1360
     * - encoding: set by user.
1361
     * - decoding: unused
1362
     */
1363
    int ildct_cmp;
1364
#define FF_CMP_SAD  0
1365
#define FF_CMP_SSE  1
1366
#define FF_CMP_SATD 2
1367
#define FF_CMP_DCT  3
1368
#define FF_CMP_PSNR 4
1369
#define FF_CMP_BIT  5
1370
#define FF_CMP_RD   6
1371
#define FF_CMP_ZERO 7
1372
#define FF_CMP_VSAD 8
1373
#define FF_CMP_VSSE 9
1374
#define FF_CMP_NSSE 10
1375
#define FF_CMP_W53  11
1376
#define FF_CMP_W97  12
1377
#define FF_CMP_DCTMAX 13
1378
#define FF_CMP_CHROMA 256
1379
    
1380
    /**
1381
     * ME diamond size & shape.
1382
     * - encoding: set by user.
1383
     * - decoding: unused
1384
     */
1385
    int dia_size;
1386

    
1387
    /**
1388
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1389
     * - encoding: set by user.
1390
     * - decoding: unused
1391
     */
1392
    int last_predictor_count;
1393

    
1394
    /**
1395
     * pre pass for motion estimation.
1396
     * - encoding: set by user.
1397
     * - decoding: unused
1398
     */
1399
    int pre_me;
1400

    
1401
    /**
1402
     * motion estimation pre pass compare function.
1403
     * - encoding: set by user.
1404
     * - decoding: unused
1405
     */
1406
    int me_pre_cmp;
1407

    
1408
    /**
1409
     * ME pre pass diamond size & shape.
1410
     * - encoding: set by user.
1411
     * - decoding: unused
1412
     */
1413
    int pre_dia_size;
1414

    
1415
    /**
1416
     * subpel ME quality.
1417
     * - encoding: set by user.
1418
     * - decoding: unused
1419
     */
1420
    int me_subpel_quality;
1421

    
1422
    /**
1423
     * callback to negotiate the pixelFormat.
1424
     * @param fmt is the list of formats which are supported by the codec,
1425
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1426
     * the first is allways the native one
1427
     * @return the choosen format
1428
     * - encoding: unused
1429
     * - decoding: set by user, if not set then the native format will always be choosen
1430
     */
1431
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1432

    
1433
    /**
1434
     * DTG active format information (additionnal aspect ratio
1435
     * information only used in DVB MPEG2 transport streams). 0 if
1436
     * not set.
1437
     * 
1438
     * - encoding: unused.
1439
     * - decoding: set by decoder 
1440
     */
1441
    int dtg_active_format;
1442
#define FF_DTG_AFD_SAME         8
1443
#define FF_DTG_AFD_4_3          9
1444
#define FF_DTG_AFD_16_9         10
1445
#define FF_DTG_AFD_14_9         11
1446
#define FF_DTG_AFD_4_3_SP_14_9  13
1447
#define FF_DTG_AFD_16_9_SP_14_9 14
1448
#define FF_DTG_AFD_SP_4_3       15
1449

    
1450
    /**
1451
     * Maximum motion estimation search range in subpel units.
1452
     * if 0 then no limit
1453
     * 
1454
     * - encoding: set by user.
1455
     * - decoding: unused.
1456
     */
1457
    int me_range;
1458

    
1459
    /**
1460
     * intra quantizer bias.
1461
     * - encoding: set by user.
1462
     * - decoding: unused
1463
     */
1464
    int intra_quant_bias;
1465
#define FF_DEFAULT_QUANT_BIAS 999999
1466
    
1467
    /**
1468
     * inter quantizer bias.
1469
     * - encoding: set by user.
1470
     * - decoding: unused
1471
     */
1472
    int inter_quant_bias;
1473

    
1474
    /**
1475
     * color table ID.
1476
     * - encoding: unused.
1477
     * - decoding: which clrtable should be used for 8bit RGB images
1478
     *             table have to be stored somewhere FIXME
1479
     */
1480
    int color_table_id;
1481
    
1482
    /**
1483
     * internal_buffer count. 
1484
     * Don't touch, used by lavc default_get_buffer()
1485
     */
1486
    int internal_buffer_count;
1487
    
1488
    /**
1489
     * internal_buffers. 
1490
     * Don't touch, used by lavc default_get_buffer()
1491
     */
1492
    void *internal_buffer;
1493

    
1494
#define FF_LAMBDA_SHIFT 7
1495
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1496
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1497
#define FF_LAMBDA_MAX (256*128-1)
1498

    
1499
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1500
    /**
1501
     * global quality for codecs which cannot change it per frame.
1502
     * this should be proportional to MPEG1/2/4 qscale.
1503
     * - encoding: set by user.
1504
     * - decoding: unused
1505
     */
1506
    int global_quality;
1507
    
1508
#define FF_CODER_TYPE_VLC   0
1509
#define FF_CODER_TYPE_AC    1
1510
    /**
1511
     * coder type
1512
     * - encoding: set by user.
1513
     * - decoding: unused
1514
     */
1515
    int coder_type;
1516

    
1517
    /**
1518
     * context model
1519
     * - encoding: set by user.
1520
     * - decoding: unused
1521
     */
1522
    int context_model;
1523
    
1524
    /**
1525
     * slice flags
1526
     * - encoding: unused
1527
     * - decoding: set by user.
1528
     */
1529
    int slice_flags;
1530
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1531
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1532
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1533

    
1534
    /**
1535
     * XVideo Motion Acceleration
1536
     * - encoding: forbidden
1537
     * - decoding: set by decoder
1538
     */
1539
    int xvmc_acceleration;
1540
    
1541
    /**
1542
     * macroblock decision mode
1543
     * - encoding: set by user.
1544
     * - decoding: unused
1545
     */
1546
    int mb_decision;
1547
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1548
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1549
#define FF_MB_DECISION_RD     2        ///< rate distoration
1550

    
1551
    /**
1552
     * custom intra quantization matrix
1553
     * - encoding: set by user, can be NULL
1554
     * - decoding: set by lavc
1555
     */
1556
    uint16_t *intra_matrix;
1557

    
1558
    /**
1559
     * custom inter quantization matrix
1560
     * - encoding: set by user, can be NULL
1561
     * - decoding: set by lavc
1562
     */
1563
    uint16_t *inter_matrix;
1564
    
1565
    /**
1566
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1567
     * this is used to workaround some encoder bugs
1568
     * - encoding: unused
1569
     * - decoding: set by user, will be converted to upper case by lavc during init
1570
     */
1571
    unsigned int stream_codec_tag;
1572

    
1573
    /**
1574
     * scene change detection threshold.
1575
     * 0 is default, larger means fewer detected scene changes
1576
     * - encoding: set by user.
1577
     * - decoding: unused
1578
     */
1579
    int scenechange_threshold;
1580

    
1581
    /**
1582
     * minimum lagrange multipler
1583
     * - encoding: set by user.
1584
     * - decoding: unused
1585
     */
1586
    int lmin;
1587

    
1588
    /**
1589
     * maximum lagrange multipler
1590
     * - encoding: set by user.
1591
     * - decoding: unused
1592
     */
1593
    int lmax;
1594

    
1595
    /**
1596
     * Palette control structure
1597
     * - encoding: ??? (no palette-enabled encoder yet)
1598
     * - decoding: set by user.
1599
     */
1600
    struct AVPaletteControl *palctrl;
1601

    
1602
    /**
1603
     * noise reduction strength
1604
     * - encoding: set by user.
1605
     * - decoding: unused
1606
     */
1607
    int noise_reduction;
1608
    
1609
    /**
1610
     * called at the beginning of a frame to get cr buffer for it.
1611
     * buffer type (size, hints) must be the same. lavc won't check it.
1612
     * lavc will pass previous buffer in pic, function should return
1613
     * same buffer or new buffer with old frame "painted" into it.
1614
     * if pic.data[0] == NULL must behave like get_buffer().
1615
     * - encoding: unused
1616
     * - decoding: set by lavc, user can override
1617
     */
1618
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1619

    
1620
    /**
1621
     * number of bits which should be loaded into the rc buffer before decoding starts
1622
     * - encoding: set by user.
1623
     * - decoding: unused
1624
     */
1625
    int rc_initial_buffer_occupancy;
1626

    
1627
    /**
1628
     *
1629
     * - encoding: set by user.
1630
     * - decoding: unused
1631
     */
1632
    int inter_threshold;
1633

    
1634
    /**
1635
     * CODEC_FLAG2_*.
1636
     * - encoding: set by user.
1637
     * - decoding: set by user.
1638
     */
1639
    int flags2;
1640

    
1641
    /**
1642
     * simulates errors in the bitstream to test error concealment.
1643
     * - encoding: set by user.
1644
     * - decoding: unused.
1645
     */
1646
    int error_rate;
1647
    
1648
    /**
1649
     * MP3 antialias algorithm, see FF_AA_* below.
1650
     * - encoding: unused
1651
     * - decoding: set by user
1652
     */
1653
    int antialias_algo;
1654
#define FF_AA_AUTO    0
1655
#define FF_AA_FASTINT 1 //not implemented yet
1656
#define FF_AA_INT     2
1657
#define FF_AA_FLOAT   3
1658
    /**
1659
     * Quantizer noise shaping.
1660
     * - encoding: set by user
1661
     * - decoding: unused
1662
     */
1663
    int quantizer_noise_shaping;
1664

    
1665
    /**
1666
     * Thread count.
1667
     * is used to decide how many independant tasks should be passed to execute()
1668
     * - encoding: set by user
1669
     * - decoding: set by user
1670
     */
1671
    int thread_count;
1672
    
1673
    /**
1674
     * the codec may call this to execute several independant things. it will return only after
1675
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1676
     * default implementation will execute the parts serially
1677
     * @param count the number of things to execute
1678
     * - encoding: set by lavc, user can override
1679
     * - decoding: set by lavc, user can override
1680
     */
1681
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1682
    
1683
    /**
1684
     * Thread opaque.
1685
     * can be used by execute() to store some per AVCodecContext stuff.
1686
     * - encoding: set by execute()
1687
     * - decoding: set by execute()
1688
     */
1689
    void *thread_opaque;
1690

    
1691
    /**
1692
     * Motion estimation threshold. under which no motion estimation is 
1693
     * performed, but instead the user specified motion vectors are used
1694
     * 
1695
     * - encoding: set by user
1696
     * - decoding: unused
1697
     */
1698
     int me_threshold;
1699

    
1700
    /**
1701
     * Macroblock threshold. under which the user specified macroblock types will be used
1702
     * - encoding: set by user
1703
     * - decoding: unused
1704
     */
1705
     int mb_threshold;
1706

    
1707
    /**
1708
     * precision of the intra dc coefficient - 8.
1709
     * - encoding: set by user
1710
     * - decoding: unused
1711
     */
1712
     int intra_dc_precision;
1713

    
1714
    /**
1715
     * noise vs. sse weight for the nsse comparsion function.
1716
     * - encoding: set by user
1717
     * - decoding: unused
1718
     */
1719
     int nsse_weight;
1720

    
1721
    /**
1722
     * number of macroblock rows at the top which are skipped.
1723
     * - encoding: unused
1724
     * - decoding: set by user
1725
     */
1726
     int skip_top;
1727

    
1728
    /**
1729
     * number of macroblock rows at the bottom which are skipped.
1730
     * - encoding: unused
1731
     * - decoding: set by user
1732
     */
1733
     int skip_bottom;
1734

    
1735
    /**
1736
     * profile
1737
     * - encoding: set by user
1738
     * - decoding: set by lavc
1739
     */
1740
     int profile;
1741
#define FF_PROFILE_UNKNOWN -99
1742

    
1743
    /**
1744
     * level
1745
     * - encoding: set by user
1746
     * - decoding: set by lavc
1747
     */
1748
     int level;
1749
#define FF_LEVEL_UNKNOWN -99
1750

    
1751
    /**
1752
     * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1753
     * - encoding: unused
1754
     * - decoding: set by user
1755
     */
1756
     int lowres;
1757

    
1758
    /**
1759
     * bitsream width / height. may be different from width/height if lowres
1760
     * or other things are used
1761
     * - encoding: unused
1762
     * - decoding: set by user before init if known, codec should override / dynamically change if needed
1763
     */
1764
    int coded_width, coded_height;
1765

    
1766
    /**
1767
     * frame skip threshold
1768
     * - encoding: set by user
1769
     * - decoding: unused
1770
     */
1771
    int frame_skip_threshold;
1772

    
1773
    /**
1774
     * frame skip factor
1775
     * - encoding: set by user
1776
     * - decoding: unused
1777
     */
1778
    int frame_skip_factor;
1779

    
1780
    /**
1781
     * frame skip exponent
1782
     * - encoding: set by user
1783
     * - decoding: unused
1784
     */
1785
    int frame_skip_exp;
1786

    
1787
    /**
1788
     * frame skip comparission function
1789
     * - encoding: set by user.
1790
     * - decoding: unused
1791
     */
1792
    int frame_skip_cmp;
1793

    
1794
    /**
1795
     * border processing masking. raises the quantizer for mbs on the borders
1796
     * of the picture.
1797
     * - encoding: set by user
1798
     * - decoding: unused
1799
     */
1800
    float border_masking;
1801

    
1802
    /**
1803
     * minimum MB lagrange multipler.
1804
     * - encoding: set by user.
1805
     * - decoding: unused
1806
     */
1807
    int mb_lmin;
1808

    
1809
    /**
1810
     * maximum MB lagrange multipler.
1811
     * - encoding: set by user.
1812
     * - decoding: unused
1813
     */
1814
    int mb_lmax;
1815

    
1816
    /**
1817
     * 
1818
     * - encoding: set by user.
1819
     * - decoding: unused
1820
     */
1821
    int me_penalty_compensation;
1822

    
1823
    /**
1824
     * 
1825
     * - encoding: unused
1826
     * - decoding: set by user.
1827
     */
1828
    enum AVDiscard skip_loop_filter;
1829

    
1830
    /**
1831
     * 
1832
     * - encoding: unused
1833
     * - decoding: set by user.
1834
     */
1835
    enum AVDiscard skip_idct;
1836

    
1837
    /**
1838
     * 
1839
     * - encoding: unused
1840
     * - decoding: set by user.
1841
     */
1842
    enum AVDiscard skip_frame;
1843
} AVCodecContext;
1844

    
1845

    
1846
/**
1847
 * AVOption.
1848
 */
1849
typedef struct AVOption {
1850
    /** options' name */
1851
    const char *name; /* if name is NULL, it indicates a link to next */
1852
    /** short English text help or const struct AVOption* subpointer */
1853
    const char *help; //        const struct AVOption* sub;
1854
    /** offset to context structure where the parsed value should be stored */
1855
    int offset;
1856
    /** options' type */
1857
    int type;
1858
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1859
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1860
#define FF_OPT_TYPE_INT 3       ///< integer
1861
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1862
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1863
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1864
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1865
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1866
    /** min value  (min == max   ->  no limits) */
1867
    double min;
1868
    /** maximum value for double/int */
1869
    double max;
1870
    /** default boo [0,1]l/double/int value */
1871
    double defval;
1872
    /**
1873
     * default string value (with optional semicolon delimited extra option-list
1874
     * i.e.   option1;option2;option3
1875
     * defval might select other then first argument as default
1876
     */
1877
    const char *defstr;
1878
#define FF_OPT_MAX_DEPTH 10
1879
} AVOption;
1880

    
1881
/**
1882
 * AVCodec.
1883
 */
1884
typedef struct AVCodec {
1885
    const char *name;
1886
    enum CodecType type;
1887
    enum CodecID id;
1888
    int priv_data_size;
1889
    int (*init)(AVCodecContext *);
1890
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1891
    int (*close)(AVCodecContext *);
1892
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1893
                  uint8_t *buf, int buf_size);
1894
    int capabilities;
1895
    void *dummy; // FIXME remove next time we break binary compatibility
1896
    struct AVCodec *next;
1897
    void (*flush)(AVCodecContext *);
1898
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1899
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1900
} AVCodec;
1901

    
1902
/**
1903
 * four components are given, that's all.
1904
 * the last component is alpha
1905
 */
1906
typedef struct AVPicture {
1907
    uint8_t *data[4];
1908
    int linesize[4];       ///< number of bytes per line
1909
} AVPicture;
1910

    
1911
/**
1912
 * AVPaletteControl
1913
 * This structure defines a method for communicating palette changes
1914
 * between and demuxer and a decoder.
1915
 */
1916
#define AVPALETTE_SIZE 1024
1917
#define AVPALETTE_COUNT 256
1918
typedef struct AVPaletteControl {
1919

    
1920
    /* demuxer sets this to 1 to indicate the palette has changed;
1921
     * decoder resets to 0 */
1922
    int palette_changed;
1923

    
1924
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1925
     * the individual palette components should be on a 8-bit scale; if
1926
     * the palette data comes from a IBM VGA native format, the component
1927
     * data is probably 6 bits in size and needs to be scaled */
1928
    unsigned int palette[AVPALETTE_COUNT];
1929

    
1930
} AVPaletteControl;
1931

    
1932
typedef struct AVSubtitle {
1933
    uint16_t format; /* 0 = graphics */
1934
    uint16_t x;
1935
    uint16_t y;
1936
    uint16_t w;
1937
    uint16_t h;
1938
    uint16_t nb_colors;
1939
    uint32_t start_display_time; /* relative to packet pts, in ms */
1940
    uint32_t end_display_time; /* relative to packet pts, in ms */
1941
    int linesize;
1942
    uint32_t *rgba_palette;
1943
    uint8_t *bitmap;
1944
} AVSubtitle;
1945

    
1946
extern AVCodec ac3_encoder;
1947
extern AVCodec mp2_encoder;
1948
extern AVCodec mp3lame_encoder;
1949
extern AVCodec oggvorbis_encoder;
1950
extern AVCodec oggtheora_encoder;
1951
extern AVCodec faac_encoder;
1952
extern AVCodec xvid_encoder;
1953
extern AVCodec mpeg1video_encoder;
1954
extern AVCodec mpeg2video_encoder;
1955
extern AVCodec h261_encoder;
1956
extern AVCodec h263_encoder;
1957
extern AVCodec h263p_encoder;
1958
extern AVCodec flv_encoder;
1959
extern AVCodec rv10_encoder;
1960
extern AVCodec rv20_encoder;
1961
extern AVCodec dvvideo_encoder;
1962
extern AVCodec mjpeg_encoder;
1963
extern AVCodec ljpeg_encoder;
1964
extern AVCodec png_encoder;
1965
extern AVCodec ppm_encoder;
1966
extern AVCodec pgm_encoder;
1967
extern AVCodec pgmyuv_encoder;
1968
extern AVCodec pbm_encoder;
1969
extern AVCodec pam_encoder;
1970
extern AVCodec mpeg4_encoder;
1971
extern AVCodec msmpeg4v1_encoder;
1972
extern AVCodec msmpeg4v2_encoder;
1973
extern AVCodec msmpeg4v3_encoder;
1974
extern AVCodec wmv1_encoder;
1975
extern AVCodec wmv2_encoder;
1976
extern AVCodec huffyuv_encoder;
1977
extern AVCodec ffvhuff_encoder;
1978
extern AVCodec h264_encoder;
1979
extern AVCodec asv1_encoder;
1980
extern AVCodec asv2_encoder;
1981
extern AVCodec vcr1_encoder;
1982
extern AVCodec ffv1_encoder;
1983
extern AVCodec snow_encoder;
1984
extern AVCodec mdec_encoder;
1985
extern AVCodec zlib_encoder;
1986
extern AVCodec sonic_encoder;
1987
extern AVCodec sonic_ls_encoder;
1988
extern AVCodec svq1_encoder;
1989
extern AVCodec x264_encoder;
1990

    
1991
extern AVCodec h263_decoder;
1992
extern AVCodec h261_decoder;
1993
extern AVCodec mpeg4_decoder;
1994
extern AVCodec msmpeg4v1_decoder;
1995
extern AVCodec msmpeg4v2_decoder;
1996
extern AVCodec msmpeg4v3_decoder;
1997
extern AVCodec wmv1_decoder;
1998
extern AVCodec wmv2_decoder;
1999
extern AVCodec vc9_decoder;
2000
extern AVCodec wmv3_decoder;
2001
extern AVCodec mpeg1video_decoder;
2002
extern AVCodec mpeg2video_decoder;
2003
extern AVCodec mpegvideo_decoder;
2004
extern AVCodec mpeg_xvmc_decoder;
2005
extern AVCodec h263i_decoder;
2006
extern AVCodec flv_decoder;
2007
extern AVCodec rv10_decoder;
2008
extern AVCodec rv20_decoder;
2009
extern AVCodec rv30_decoder;
2010
extern AVCodec rv40_decoder;
2011
extern AVCodec svq1_decoder;
2012
extern AVCodec svq3_decoder;
2013
extern AVCodec dvvideo_decoder;
2014
extern AVCodec wmav1_decoder;
2015
extern AVCodec wmav2_decoder;
2016
extern AVCodec mjpeg_decoder;
2017
extern AVCodec mjpegb_decoder;
2018
extern AVCodec sp5x_decoder;
2019
extern AVCodec png_decoder;
2020
extern AVCodec mp2_decoder;
2021
extern AVCodec mp3_decoder;
2022
extern AVCodec mp3adu_decoder;
2023
extern AVCodec mp3on4_decoder;
2024
extern AVCodec mace3_decoder;
2025
extern AVCodec mace6_decoder;
2026
extern AVCodec huffyuv_decoder;
2027
extern AVCodec ffvhuff_decoder;
2028
extern AVCodec oggvorbis_decoder;
2029
extern AVCodec oggtheora_decoder;
2030
extern AVCodec cyuv_decoder;
2031
extern AVCodec h264_decoder;
2032
extern AVCodec indeo3_decoder;
2033
extern AVCodec vp3_decoder;
2034
extern AVCodec theora_decoder;
2035
extern AVCodec amr_nb_decoder;
2036
extern AVCodec amr_nb_encoder;
2037
extern AVCodec amr_wb_encoder;
2038
extern AVCodec amr_wb_decoder;
2039
extern AVCodec aac_decoder;
2040
extern AVCodec mpeg4aac_decoder;
2041
extern AVCodec asv1_decoder;
2042
extern AVCodec asv2_decoder;
2043
extern AVCodec vcr1_decoder;
2044
extern AVCodec cljr_decoder;
2045
extern AVCodec ffv1_decoder;
2046
extern AVCodec snow_decoder;
2047
extern AVCodec fourxm_decoder;
2048
extern AVCodec mdec_decoder;
2049
extern AVCodec roq_decoder;
2050
extern AVCodec interplay_video_decoder;
2051
extern AVCodec xan_wc3_decoder;
2052
extern AVCodec rpza_decoder;
2053
extern AVCodec cinepak_decoder;
2054
extern AVCodec msrle_decoder;
2055
extern AVCodec msvideo1_decoder;
2056
extern AVCodec vqa_decoder;
2057
extern AVCodec idcin_decoder;
2058
extern AVCodec eightbps_decoder;
2059
extern AVCodec smc_decoder;
2060
extern AVCodec flic_decoder;
2061
extern AVCodec vmdvideo_decoder;
2062
extern AVCodec vmdaudio_decoder;
2063
extern AVCodec truemotion1_decoder;
2064
extern AVCodec mszh_decoder;
2065
extern AVCodec zlib_decoder;
2066
extern AVCodec ra_144_decoder;
2067
extern AVCodec ra_288_decoder;
2068
extern AVCodec roq_dpcm_decoder;
2069
extern AVCodec interplay_dpcm_decoder;
2070
extern AVCodec xan_dpcm_decoder;
2071
extern AVCodec sol_dpcm_decoder;
2072
extern AVCodec sonic_decoder;
2073
extern AVCodec qtrle_decoder;
2074
extern AVCodec flac_decoder;
2075
extern AVCodec tscc_decoder;
2076
extern AVCodec ulti_decoder;
2077
extern AVCodec qdraw_decoder;
2078
extern AVCodec xl_decoder;
2079
extern AVCodec qpeg_decoder;
2080
extern AVCodec shorten_decoder;
2081
extern AVCodec loco_decoder;
2082
extern AVCodec wnv1_decoder;
2083
extern AVCodec aasc_decoder;
2084
extern AVCodec alac_decoder;
2085
extern AVCodec ws_snd1_decoder;
2086
extern AVCodec indeo2_decoder;
2087
extern AVCodec vorbis_decoder;
2088
extern AVCodec fraps_decoder;
2089
extern AVCodec libgsm_encoder;
2090
extern AVCodec libgsm_decoder;
2091

    
2092
/* pcm codecs */
2093
#define PCM_CODEC(id, name) \
2094
extern AVCodec name ## _decoder; \
2095
extern AVCodec name ## _encoder
2096

    
2097
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2098
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2099
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2100
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2101
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2102
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2103
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2104
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2105

    
2106
/* adpcm codecs */
2107

    
2108
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2109
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2110
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2111
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2112
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2113
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2114
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2115
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2116
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2117
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2118
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2119
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2120
PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2121
PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2122

    
2123
#undef PCM_CODEC
2124

    
2125
/* dummy raw video codec */
2126
extern AVCodec rawvideo_encoder;
2127
extern AVCodec rawvideo_decoder;
2128

    
2129
/* the following codecs use external GPL libs */
2130
extern AVCodec ac3_decoder;
2131
extern AVCodec dts_decoder;
2132

    
2133
/* subtitles */
2134
extern AVCodec dvdsub_decoder;
2135
extern AVCodec dvbsub_encoder;
2136

    
2137
/* resample.c */
2138

    
2139
struct ReSampleContext;
2140
struct AVResampleContext;
2141

    
2142
typedef struct ReSampleContext ReSampleContext;
2143

    
2144
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
2145
                                     int output_rate, int input_rate);
2146
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2147
void audio_resample_close(ReSampleContext *s);
2148

    
2149
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2150
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2151
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2152
void av_resample_close(struct AVResampleContext *c);
2153

    
2154
/* YUV420 format is assumed ! */
2155

    
2156
struct ImgReSampleContext;
2157

    
2158
typedef struct ImgReSampleContext ImgReSampleContext;
2159

    
2160
ImgReSampleContext *img_resample_init(int output_width, int output_height,
2161
                                      int input_width, int input_height);
2162

    
2163
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2164
                                      int iwidth, int iheight,
2165
                                      int topBand, int bottomBand,
2166
                                      int leftBand, int rightBand,
2167
                                      int padtop, int padbottom,
2168
                                      int padleft, int padright);
2169

    
2170

    
2171
void img_resample(ImgReSampleContext *s, 
2172
                  AVPicture *output, const AVPicture *input);
2173

    
2174
void img_resample_close(ImgReSampleContext *s);
2175

    
2176
/**
2177
 * Allocate memory for a picture.  Call avpicture_free to free it.
2178
 *
2179
 * @param picture the picture to be filled in.
2180
 * @param pix_fmt the format of the picture.
2181
 * @param width the width of the picture.
2182
 * @param height the height of the picture.
2183
 * @return 0 if successful, -1 if not.
2184
 */
2185
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2186

    
2187
/* Free a picture previously allocated by avpicture_alloc. */
2188
void avpicture_free(AVPicture *picture);
2189

    
2190
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2191
                   int pix_fmt, int width, int height);
2192
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2193
                     unsigned char *dest, int dest_size);
2194
int avpicture_get_size(int pix_fmt, int width, int height);
2195
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2196
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2197
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2198
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2199
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2200

    
2201
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
2202
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
2203
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
2204
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
2205
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
2206
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2207

    
2208
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2209
                             int has_alpha);
2210
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2211
                              int has_alpha, int *loss_ptr);
2212

    
2213
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2214
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2215
int img_get_alpha_info(const AVPicture *src,
2216
                       int pix_fmt, int width, int height);
2217

    
2218
/* convert among pixel formats */
2219
int img_convert(AVPicture *dst, int dst_pix_fmt,
2220
                const AVPicture *src, int pix_fmt, 
2221
                int width, int height);
2222

    
2223
/* deinterlace a picture */
2224
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2225
                          int pix_fmt, int width, int height);
2226

    
2227
/* external high level API */
2228

    
2229
extern AVCodec *first_avcodec;
2230

    
2231
/* returns LIBAVCODEC_VERSION_INT constant */
2232
unsigned avcodec_version(void);
2233
/* returns LIBAVCODEC_BUILD constant */
2234
unsigned avcodec_build(void);
2235
void avcodec_init(void);
2236

    
2237
void register_avcodec(AVCodec *format);
2238
AVCodec *avcodec_find_encoder(enum CodecID id);
2239
AVCodec *avcodec_find_encoder_by_name(const char *name);
2240
AVCodec *avcodec_find_decoder(enum CodecID id);
2241
AVCodec *avcodec_find_decoder_by_name(const char *name);
2242
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2243

    
2244
void avcodec_get_context_defaults(AVCodecContext *s);
2245
AVCodecContext *avcodec_alloc_context(void);
2246
void avcodec_get_frame_defaults(AVFrame *pic);
2247
AVFrame *avcodec_alloc_frame(void);
2248

    
2249
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2250
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2251
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2252
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2253
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2254
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2255

    
2256
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2257
void avcodec_thread_free(AVCodecContext *s);
2258
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2259
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2260
//FIXME func typedef
2261

    
2262
/**
2263
 * opens / inits the AVCodecContext.
2264
 * not thread save!
2265
 */
2266
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2267

    
2268
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
2269
                         int *frame_size_ptr,
2270
                         uint8_t *buf, int buf_size);
2271
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
2272
                         int *got_picture_ptr,
2273
                         uint8_t *buf, int buf_size);
2274
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2275
                            int *got_sub_ptr,
2276
                            const uint8_t *buf, int buf_size);
2277
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
2278
                        int *data_size_ptr,
2279
                        uint8_t *buf, int buf_size);
2280
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2281
                         const short *samples);
2282
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2283
                         const AVFrame *pict);
2284
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2285
                            const AVSubtitle *sub);
2286

    
2287
int avcodec_close(AVCodecContext *avctx);
2288

    
2289
void avcodec_register_all(void);
2290

    
2291
void avcodec_flush_buffers(AVCodecContext *avctx);
2292

    
2293
void avcodec_default_free_buffers(AVCodecContext *s);
2294

    
2295
/* misc usefull functions */
2296

    
2297
/**
2298
 * returns a single letter to describe the picture type
2299
 */
2300
char av_get_pict_type_char(int pict_type);
2301

    
2302
/**
2303
 * reduce a fraction.
2304
 * this is usefull for framerate calculations
2305
 * @param max the maximum allowed for dst_nom & dst_den
2306
 * @return 1 if exact, 0 otherwise
2307
 */
2308
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2309

    
2310
/**
2311
 * rescale a 64bit integer with rounding to nearest.
2312
 * a simple a*b/c isn't possible as it can overflow
2313
 */
2314
int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2315

    
2316
/**
2317
 * rescale a 64bit integer with specified rounding.
2318
 * a simple a*b/c isn't possible as it can overflow
2319
 */
2320
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
2321

    
2322
/**
2323
 * rescale a 64bit integer by 2 rational numbers.
2324
 */
2325
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq);
2326

    
2327
/* frame parsing */
2328
typedef struct AVCodecParserContext {
2329
    void *priv_data;
2330
    struct AVCodecParser *parser;
2331
    int64_t frame_offset; /* offset of the current frame */
2332
    int64_t cur_offset; /* current offset 
2333
                           (incremented by each av_parser_parse()) */
2334
    int64_t last_frame_offset; /* offset of the last frame */
2335
    /* video info */
2336
    int pict_type; /* XXX: put it back in AVCodecContext */
2337
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2338
    int64_t pts;     /* pts of the current frame */
2339
    int64_t dts;     /* dts of the current frame */
2340

    
2341
    /* private data */
2342
    int64_t last_pts;
2343
    int64_t last_dts;
2344
    int fetch_timestamp;
2345

    
2346
#define AV_PARSER_PTS_NB 4
2347
    int cur_frame_start_index;
2348
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2349
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2350
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2351
} AVCodecParserContext;
2352

    
2353
typedef struct AVCodecParser {
2354
    int codec_ids[5]; /* several codec IDs are permitted */
2355
    int priv_data_size;
2356
    int (*parser_init)(AVCodecParserContext *s);
2357
    int (*parser_parse)(AVCodecParserContext *s, 
2358
                        AVCodecContext *avctx,
2359
                        uint8_t **poutbuf, int *poutbuf_size, 
2360
                        const uint8_t *buf, int buf_size);
2361
    void (*parser_close)(AVCodecParserContext *s);
2362
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2363
    struct AVCodecParser *next;
2364
} AVCodecParser;
2365

    
2366
extern AVCodecParser *av_first_parser;
2367

    
2368
void av_register_codec_parser(AVCodecParser *parser);
2369
AVCodecParserContext *av_parser_init(int codec_id);
2370
int av_parser_parse(AVCodecParserContext *s, 
2371
                    AVCodecContext *avctx,
2372
                    uint8_t **poutbuf, int *poutbuf_size, 
2373
                    const uint8_t *buf, int buf_size,
2374
                    int64_t pts, int64_t dts);
2375
int av_parser_change(AVCodecParserContext *s,
2376
                     AVCodecContext *avctx,
2377
                     uint8_t **poutbuf, int *poutbuf_size, 
2378
                     const uint8_t *buf, int buf_size, int keyframe);
2379
void av_parser_close(AVCodecParserContext *s);
2380

    
2381
extern AVCodecParser mpegvideo_parser;
2382
extern AVCodecParser mpeg4video_parser;
2383
extern AVCodecParser h261_parser;
2384
extern AVCodecParser h263_parser;
2385
extern AVCodecParser h264_parser;
2386
extern AVCodecParser mjpeg_parser;
2387
extern AVCodecParser pnm_parser;
2388
extern AVCodecParser mpegaudio_parser;
2389
extern AVCodecParser ac3_parser;
2390
extern AVCodecParser dvdsub_parser;
2391

    
2392
/* memory */
2393
void *av_malloc(unsigned int size);
2394
void *av_mallocz(unsigned int size);
2395
void *av_realloc(void *ptr, unsigned int size);
2396
void av_free(void *ptr);
2397
char *av_strdup(const char *s);
2398
void av_freep(void *ptr);
2399
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2400
/* for static data only */
2401
/* call av_free_static to release all staticaly allocated tables */
2402
void av_free_static(void);
2403
void *av_mallocz_static(unsigned int size);
2404
void *av_realloc_static(void *ptr, unsigned int size);
2405

    
2406
/* add by bero : in adx.c */
2407
int is_adx(const unsigned char *buf,size_t bufsize);
2408

    
2409
void img_copy(AVPicture *dst, const AVPicture *src,
2410
              int pix_fmt, int width, int height);
2411

    
2412
/* av_log API */
2413

    
2414
#include <stdarg.h>
2415

    
2416
#define AV_LOG_QUIET -1
2417
#define AV_LOG_ERROR 0
2418
#define AV_LOG_INFO 1
2419
#define AV_LOG_DEBUG 2
2420

    
2421
#ifdef __GNUC__
2422
extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2423
#else
2424
extern void av_log(void*, int level, const char *fmt, ...);
2425
#endif
2426

    
2427
extern void av_vlog(void*, int level, const char *fmt, va_list);
2428
extern int av_log_get_level(void);
2429
extern void av_log_set_level(int);
2430
extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2431

    
2432
/* endian macros */
2433
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2434
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2435
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2436
                   (((uint8_t*)(x))[1] << 16) | \
2437
                   (((uint8_t*)(x))[2] << 8) | \
2438
                    ((uint8_t*)(x))[3])
2439
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2440
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2441
                   (((uint8_t*)(x))[2] << 16) | \
2442
                   (((uint8_t*)(x))[1] << 8) | \
2443
                    ((uint8_t*)(x))[0])
2444
#endif
2445

    
2446
extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2447

    
2448
#ifdef __cplusplus
2449
}
2450
#endif
2451

    
2452
#endif /* AVCODEC_H */