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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         "0.4.9-pre1"
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#define LIBAVCODEC_BUILD       4749
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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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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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    /* 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_OGGTHEORA= 0x16000, 
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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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};
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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_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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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: 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///< dont 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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/* 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
344
 */
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#define CODEC_CAP_DR1             0x0002
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/* if 'parse_only' field is true, then avcodec_parse_frame() can be
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   used */
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#define CODEC_CAP_PARSE_ONLY      0x0004
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#define CODEC_CAP_TRUNCATED       0x0008
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/* codec can export data for HW decoding (XvMC) */
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#define CODEC_CAP_HWACCEL         0x0010
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/** 
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 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
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 * if this is not set, the codec is guranteed to never be feeded with NULL data
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 */
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#define CODEC_CAP_DELAY           0x0020
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//the following defines might change, so dont expect compatibility if u 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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/**
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 * Pan Scan area.
384
 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
385
 */
386
typedef struct AVPanScan{
387
    /**
388
     * id.
389
     * - encoding: set by user.
390
     * - decoding: set by lavc
391
     */
392
    int id;
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    /**
395
     * width and height in 1/16 pel
396
     * - encoding: set by user.
397
     * - decoding: set by lavc
398
     */
399
    int width;
400
    int height;
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402
    /**
403
     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
404
     * - encoding: set by user.
405
     * - decoding: set by lavc
406
     */
407
    int16_t position[3][2];
408
}AVPanScan;
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410
#define FF_COMMON_FRAME \
411
    /**\
412
     * pointer to the picture planes.\
413
     * this might be different from the first allocated byte\
414
     * - encoding: \
415
     * - decoding: \
416
     */\
417
    uint8_t *data[4];\
418
    int linesize[4];\
419
    /**\
420
     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
421
     * this isnt used by lavc unless the default get/release_buffer() is used\
422
     * - encoding: \
423
     * - decoding: \
424
     */\
425
    uint8_t *base[4];\
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    /**\
427
     * 1 -> keyframe, 0-> not\
428
     * - encoding: set by lavc\
429
     * - decoding: set by lavc\
430
     */\
431
    int key_frame;\
432
\
433
    /**\
434
     * picture type of the frame, see ?_TYPE below.\
435
     * - encoding: set by lavc for coded_picture (and set by user for input)\
436
     * - decoding: set by lavc\
437
     */\
438
    int pict_type;\
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\
440
    /**\
441
     * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
442
     * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
443
     * - encoding: MUST be set by user\
444
     * - decoding: set by lavc\
445
     */\
446
    int64_t pts;\
447
\
448
    /**\
449
     * picture number in bitstream order.\
450
     * - encoding: set by\
451
     * - decoding: set by lavc\
452
     */\
453
    int coded_picture_number;\
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    /**\
455
     * picture number in display order.\
456
     * - encoding: set by\
457
     * - decoding: set by lavc\
458
     */\
459
    int display_picture_number;\
460
\
461
    /**\
462
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
463
     * - encoding: set by lavc for coded_picture (and set by user for input)\
464
     * - decoding: set by lavc\
465
     */\
466
    int quality; \
467
\
468
    /**\
469
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
470
     * set to INT_MAX if the buffer has not been used yet \
471
     * - encoding: unused\
472
     * - decoding: MUST be set by get_buffer()\
473
     */\
474
    int age;\
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\
476
    /**\
477
     * is this picture used as reference\
478
     * - encoding: unused\
479
     * - decoding: set by lavc (before get_buffer() call))\
480
     */\
481
    int reference;\
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\
483
    /**\
484
     * QP table\
485
     * - encoding: unused\
486
     * - decoding: set by lavc\
487
     */\
488
    int8_t *qscale_table;\
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    /**\
490
     * QP store stride\
491
     * - encoding: unused\
492
     * - decoding: set by lavc\
493
     */\
494
    int qstride;\
495
\
496
    /**\
497
     * mbskip_table[mb]>=1 if MB didnt change\
498
     * stride= mb_width = (width+15)>>4\
499
     * - encoding: unused\
500
     * - decoding: set by lavc\
501
     */\
502
    uint8_t *mbskip_table;\
503
\
504
    /**\
505
     * Motion vector table.\
506
     * @code\
507
     * example:\
508
     * int mv_sample_log2= 4 - motion_subsample_log2;\
509
     * int mb_width= (width+15)>>4;\
510
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
511
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
512
     * @endcode\
513
     * - encoding: set by user\
514
     * - decoding: set by lavc\
515
     */\
516
    int16_t (*motion_val[2])[2];\
517
\
518
    /**\
519
     * Macroblock type table\
520
     * mb_type_base + mb_width + 2\
521
     * - encoding: set by user\
522
     * - decoding: set by lavc\
523
     */\
524
    uint32_t *mb_type;\
525
\
526
    /**\
527
     * log2 of the size of the block which a single vector in motion_val represents: \
528
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
529
     * - encoding: unused\
530
     * - decoding: set by lavc\
531
     */\
532
    uint8_t motion_subsample_log2;\
533
\
534
    /**\
535
     * for some private data of the user\
536
     * - encoding: unused\
537
     * - decoding: set by user\
538
     */\
539
    void *opaque;\
540
\
541
    /**\
542
     * error\
543
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
544
     * - decoding: unused\
545
     */\
546
    uint64_t error[4];\
547
\
548
    /**\
549
     * type of the buffer (to keep track of who has to dealloc data[*])\
550
     * - encoding: set by the one who allocs it\
551
     * - decoding: set by the one who allocs it\
552
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
553
     */\
554
    int type;\
555
    \
556
    /**\
557
     * when decoding, this signal how much the picture must be delayed.\
558
     * extra_delay = repeat_pict / (2*fps)\
559
     * - encoding: unused\
560
     * - decoding: set by lavc\
561
     */\
562
    int repeat_pict;\
563
    \
564
    /**\
565
     * \
566
     */\
567
    int qscale_type;\
568
    \
569
    /**\
570
     * The content of the picture is interlaced.\
571
     * - encoding: set by user\
572
     * - decoding: set by lavc (default 0)\
573
     */\
574
    int interlaced_frame;\
575
    \
576
    /**\
577
     * if the content is interlaced, is top field displayed first.\
578
     * - encoding: set by user\
579
     * - decoding: set by lavc\
580
     */\
581
    int top_field_first;\
582
    \
583
    /**\
584
     * Pan scan.\
585
     * - encoding: set by user\
586
     * - decoding: set by lavc\
587
     */\
588
    AVPanScan *pan_scan;\
589
    \
590
    /**\
591
     * tell user application that palette has changed from previous frame.\
592
     * - encoding: ??? (no palette-enabled encoder yet)\
593
     * - decoding: set by lavc (default 0)\
594
     */\
595
    int palette_has_changed;\
596
    \
597
    /**\
598
     * Codec suggestion on buffer type if != 0\
599
     * - encoding: unused\
600
     * - decoding: set by lavc (before get_buffer() call))\
601
     */\
602
    int buffer_hints;\
603
\
604
    /**\
605
     * DCT coeffitients\
606
     * - encoding: unused\
607
     * - decoding: set by lavc\
608
     */\
609
    short *dct_coeff;\
610
\
611
    /**\
612
     * Motion referece frame index\
613
     * - encoding: set by user\
614
     * - decoding: set by lavc\
615
     */\
616
    int8_t *ref_index[2];
617

    
618
#define FF_QSCALE_TYPE_MPEG1        0
619
#define FF_QSCALE_TYPE_MPEG2        1
620

    
621
#define FF_BUFFER_TYPE_INTERNAL 1
622
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
623
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
624
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
625

    
626

    
627
#define FF_I_TYPE 1 // Intra
628
#define FF_P_TYPE 2 // Predicted
629
#define FF_B_TYPE 3 // Bi-dir predicted
630
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
631
#define FF_SI_TYPE 5
632
#define FF_SP_TYPE 6
633

    
634
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
635
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
636
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
637
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
638

    
639
/**
640
 * Audio Video Frame.
641
 */
642
typedef struct AVFrame {
643
    FF_COMMON_FRAME
644
} AVFrame;
645

    
646
#define DEFAULT_FRAME_RATE_BASE 1001000
647

    
648
/**
649
 * Used by av_log
650
 */
651
typedef struct AVCLASS AVClass;
652
struct AVCLASS {
653
    const char* class_name;
654
    const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
655
                                        or AVFormatContext, which begin with an AVClass.
656
                                        Needed because av_log is in libavcodec and has no visibility
657
                                        of AVIn/OutputFormat */
658
};
659

    
660
/**
661
 * main external api structure.
662
 */
663
typedef struct AVCodecContext {
664
    /**
665
     * Info on struct for av_log
666
     * - set by avcodec_alloc_context
667
     */
668
    AVClass *av_class;
669
    /**
670
     * the average bitrate.
671
     * - encoding: set by user. unused for constant quantizer encoding
672
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
673
     */
674
    int bit_rate;
675

    
676
    /**
677
     * number of bits the bitstream is allowed to diverge from the reference.
678
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
679
     * - encoding: set by user. unused for constant quantizer encoding
680
     * - decoding: unused
681
     */
682
    int bit_rate_tolerance; 
683

    
684
    /**
685
     * CODEC_FLAG_*.
686
     * - encoding: set by user.
687
     * - decoding: set by user.
688
     */
689
    int flags;
690

    
691
    /**
692
     * some codecs needs additionnal format info. It is stored here
693
     * - encoding: set by user. 
694
     * - decoding: set by lavc. (FIXME is this ok?)
695
     */
696
    int sub_id;
697

    
698
    /**
699
     * motion estimation algorithm used for video coding.
700
     * - encoding: MUST be set by user.
701
     * - decoding: unused
702
     */
703
    int me_method;
704

    
705
    /**
706
     * some codecs need / can use extra-data like huffman tables.
707
     * mjpeg: huffman tables
708
     * rv10: additional flags
709
     * mpeg4: global headers (they can be in the bitstream or here)
710
     * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
711
     * then extradata_size to avoid prolems if its read with the bitstream reader
712
     * - encoding: set/allocated/freed by lavc.
713
     * - decoding: set/allocated/freed by user.
714
     */
715
    void *extradata;
716
    int extradata_size;
717
    
718
    /* video only */
719
    /**
720
     * frames per sec multiplied by frame_rate_base.
721
     * for variable fps this is the precission, so if the timestamps 
722
     * can be specified in msec precssion then this is 1000*frame_rate_base
723
     * - encoding: MUST be set by user
724
     * - decoding: set by lavc. 0 or the frame_rate if available
725
     */
726
    int frame_rate;
727
    
728
    /**
729
     * picture width / height.
730
     * - encoding: MUST be set by user. 
731
     * - decoding: set by lavc.
732
     * Note, for compatibility its possible to set this instead of 
733
     * coded_width/height before decoding
734
     */
735
    int width, height;
736
    
737
#define FF_ASPECT_EXTENDED 15
738

    
739
    /**
740
     * the number of pictures in a group of pitures, or 0 for intra_only.
741
     * - encoding: set by user.
742
     * - decoding: unused
743
     */
744
    int gop_size;
745

    
746
    /**
747
     * pixel format, see PIX_FMT_xxx.
748
     * - encoding: set by user.
749
     * - decoding: set by lavc.
750
     */
751
    enum PixelFormat pix_fmt;
752
 
753
    /**
754
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
755
     * has to read frames at native frame rate.
756
     * - encoding: set by user.
757
     * - decoding: unused.
758
     */
759
    int rate_emu;
760
       
761
    /**
762
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
763
     * decoder to draw an horizontal band. It improve cache usage. Not
764
     * all codecs can do that. You must check the codec capabilities
765
     * before
766
     * - encoding: unused
767
     * - decoding: set by user.
768
     * @param height the height of the slice
769
     * @param y the y position of the slice
770
     * @param type 1->top field, 2->bottom field, 3->frame
771
     * @param offset offset into the AVFrame.data from which the slice should be read
772
     */
773
    void (*draw_horiz_band)(struct AVCodecContext *s,
774
                            const AVFrame *src, int offset[4],
775
                            int y, int type, int height);
776

    
777
    /* audio only */
778
    int sample_rate; ///< samples per sec 
779
    int channels;
780

    
781
    /**
782
     * audio sample format.
783
     * - encoding: set by user.
784
     * - decoding: set by lavc.
785
     */
786
    enum SampleFormat sample_fmt;  ///< sample format, currenly unused 
787

    
788
    /* the following data should not be initialized */
789
    int frame_size;     ///< in samples, initialized when calling 'init' 
790
    int frame_number;   ///< audio or video frame number 
791
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
792
    
793
    /**
794
     * number of frames the decoded output will be delayed relative to 
795
     * the encoded input.
796
     * - encoding: set by lavc.
797
     * - decoding: unused
798
     */
799
    int delay;
800
    
801
    /* - encoding parameters */
802
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
803
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
804
    
805
    /**
806
     * minimum quantizer.
807
     * - encoding: set by user.
808
     * - decoding: unused
809
     */
810
    int qmin;
811

    
812
    /**
813
     * maximum quantizer.
814
     * - encoding: set by user.
815
     * - decoding: unused
816
     */
817
    int qmax;
818

    
819
    /**
820
     * maximum quantizer difference etween frames.
821
     * - encoding: set by user.
822
     * - decoding: unused
823
     */
824
    int max_qdiff;
825

    
826
    /**
827
     * maximum number of b frames between non b frames.
828
     * note: the output will be delayed by max_b_frames+1 relative to the input
829
     * - encoding: set by user.
830
     * - decoding: unused
831
     */
832
    int max_b_frames;
833

    
834
    /**
835
     * qscale factor between ip and b frames.
836
     * - encoding: set by user.
837
     * - decoding: unused
838
     */
839
    float b_quant_factor;
840
    
841
    /** obsolete FIXME remove */
842
    int rc_strategy;
843
    int b_frame_strategy;
844

    
845
    /**
846
     * hurry up amount.
847
     * - encoding: unused
848
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
849
     */
850
    int hurry_up;
851
    
852
    struct AVCodec *codec;
853
    
854
    void *priv_data;
855

    
856
    /* unused, FIXME remove*/
857
    int rtp_mode;
858
    
859
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
860
                            /* do it's best to deliver a chunk with size    */
861
                            /* below rtp_payload_size, the chunk will start */
862
                            /* with a start code on some codecs like H.263  */
863
                            /* This doesn't take account of any particular  */
864
                            /* headers inside the transmited RTP payload    */
865

    
866
    
867
    /* The RTP callcack: This function is called  */
868
    /* every time the encoder as a packet to send */
869
    /* Depends on the encoder if the data starts  */
870
    /* with a Start Code (it should) H.263 does.  */
871
    /* mb_nb contains the number of macroblocks   */
872
    /* encoded in the RTP payload                 */
873
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb); 
874

    
875
    /* statistics, used for 2-pass encoding */
876
    int mv_bits;
877
    int header_bits;
878
    int i_tex_bits;
879
    int p_tex_bits;
880
    int i_count;
881
    int p_count;
882
    int skip_count;
883
    int misc_bits;
884
    
885
    /**
886
     * number of bits used for the previously encoded frame.
887
     * - encoding: set by lavc
888
     * - decoding: unused
889
     */
890
    int frame_bits;
891

    
892
    /**
893
     * private data of the user, can be used to carry app specific stuff.
894
     * - encoding: set by user
895
     * - decoding: set by user
896
     */
897
    void *opaque;
898

    
899
    char codec_name[32];
900
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
901
    enum CodecID codec_id; /* see CODEC_ID_xxx */
902
    
903
    /**
904
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
905
     * this is used to workaround some encoder bugs
906
     * - encoding: set by user, if not then the default based on codec_id will be used
907
     * - decoding: set by user, will be converted to upper case by lavc during init
908
     */
909
    unsigned int codec_tag;
910
    
911
    /**
912
     * workaround bugs in encoders which sometimes cannot be detected automatically.
913
     * - encoding: set by user
914
     * - decoding: set by user
915
     */
916
    int workaround_bugs;
917
#define FF_BUG_AUTODETECT       1  ///< autodetection
918
#define FF_BUG_OLD_MSMPEG4      2
919
#define FF_BUG_XVID_ILACE       4
920
#define FF_BUG_UMP4             8
921
#define FF_BUG_NO_PADDING       16
922
#define FF_BUG_AMV              32
923
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
924
#define FF_BUG_QPEL_CHROMA      64
925
#define FF_BUG_STD_QPEL         128
926
#define FF_BUG_QPEL_CHROMA2     256
927
#define FF_BUG_DIRECT_BLOCKSIZE 512
928
#define FF_BUG_EDGE             1024
929
#define FF_BUG_HPEL_CHROMA      2048
930
#define FF_BUG_DC_CLIP          4096
931
#define FF_BUG_MS               8192 ///< workaround various bugs in microsofts broken decoders
932
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
933
        
934
    /**
935
     * luma single coeff elimination threshold.
936
     * - encoding: set by user
937
     * - decoding: unused
938
     */
939
    int luma_elim_threshold;
940
    
941
    /**
942
     * chroma single coeff elimination threshold.
943
     * - encoding: set by user
944
     * - decoding: unused
945
     */
946
    int chroma_elim_threshold;
947
    
948
    /**
949
     * strictly follow the std (MPEG4, ...).
950
     * - encoding: set by user
951
     * - decoding: unused
952
     */
953
    int strict_std_compliance;
954
    
955
    /**
956
     * qscale offset between ip and b frames.
957
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
958
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
959
     * - encoding: set by user.
960
     * - decoding: unused
961
     */
962
    float b_quant_offset;
963
    
964
    /**
965
     * error resilience higher values will detect more errors but may missdetect
966
     * some more or less valid parts as errors.
967
     * - encoding: unused
968
     * - decoding: set by user
969
     */
970
    int error_resilience;
971
#define FF_ER_CAREFULL        1
972
#define FF_ER_COMPLIANT       2
973
#define FF_ER_AGGRESSIVE      3
974
#define FF_ER_VERY_AGGRESSIVE 4
975
    
976
    /**
977
     * called at the beginning of each frame to get a buffer for it.
978
     * if pic.reference is set then the frame will be read later by lavc
979
     * avcodec_align_dimensions() should be used to find the required width and
980
     * height, as they normally need to be rounded up to the next multiple of 16
981
     * - encoding: unused
982
     * - decoding: set by lavc, user can override
983
     */
984
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
985
    
986
    /**
987
     * called to release buffers which where allocated with get_buffer.
988
     * a released buffer can be reused in get_buffer()
989
     * pic.data[*] must be set to NULL
990
     * - encoding: unused
991
     * - decoding: set by lavc, user can override
992
     */
993
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
994

    
995
    /**
996
     * if 1 the stream has a 1 frame delay during decoding.
997
     * - encoding: set by lavc
998
     * - decoding: set by lavc
999
     */
1000
    int has_b_frames;
1001
    
1002
    int block_align; ///< used by some WAV based audio codecs
1003
    
1004
    int parse_only; /* - decoding only: if true, only parsing is done
1005
                       (function avcodec_parse_frame()). The frame
1006
                       data is returned. Only MPEG codecs support this now. */
1007
    
1008
    /**
1009
     * 0-> h263 quant 1-> mpeg quant.
1010
     * - encoding: set by user.
1011
     * - decoding: unused
1012
     */
1013
    int mpeg_quant;
1014
    
1015
    /**
1016
     * pass1 encoding statistics output buffer.
1017
     * - encoding: set by lavc
1018
     * - decoding: unused
1019
     */
1020
    char *stats_out;
1021
    
1022
    /**
1023
     * pass2 encoding statistics input buffer.
1024
     * concatenated stuff from stats_out of pass1 should be placed here
1025
     * - encoding: allocated/set/freed by user
1026
     * - decoding: unused
1027
     */
1028
    char *stats_in;
1029
    
1030
    /**
1031
     * ratecontrol qmin qmax limiting method.
1032
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1033
     * - encoding: set by user.
1034
     * - decoding: unused
1035
     */
1036
    float rc_qsquish;
1037

    
1038
    float rc_qmod_amp;
1039
    int rc_qmod_freq;
1040
    
1041
    /**
1042
     * ratecontrol override, see RcOverride.
1043
     * - encoding: allocated/set/freed by user.
1044
     * - decoding: unused
1045
     */
1046
    RcOverride *rc_override;
1047
    int rc_override_count;
1048
    
1049
    /**
1050
     * rate control equation.
1051
     * - encoding: set by user
1052
     * - decoding: unused
1053
     */
1054
    char *rc_eq;
1055
    
1056
    /**
1057
     * maximum bitrate.
1058
     * - encoding: set by user.
1059
     * - decoding: unused
1060
     */
1061
    int rc_max_rate;
1062
    
1063
    /**
1064
     * minimum bitrate.
1065
     * - encoding: set by user.
1066
     * - decoding: unused
1067
     */
1068
    int rc_min_rate;
1069
    
1070
    /**
1071
     * decoder bitstream buffer size.
1072
     * - encoding: set by user.
1073
     * - decoding: unused
1074
     */
1075
    int rc_buffer_size;
1076
    float rc_buffer_aggressivity;
1077

    
1078
    /**
1079
     * qscale factor between p and i frames.
1080
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1081
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1082
     * - encoding: set by user.
1083
     * - decoding: unused
1084
     */
1085
    float i_quant_factor;
1086
    
1087
    /**
1088
     * qscale offset between p and i frames.
1089
     * - encoding: set by user.
1090
     * - decoding: unused
1091
     */
1092
    float i_quant_offset;
1093
    
1094
    /**
1095
     * initial complexity for pass1 ratecontrol.
1096
     * - encoding: set by user.
1097
     * - decoding: unused
1098
     */
1099
    float rc_initial_cplx;
1100

    
1101
    /**
1102
     * dct algorithm, see FF_DCT_* below.
1103
     * - encoding: set by user
1104
     * - decoding: unused
1105
     */
1106
    int dct_algo;
1107
#define FF_DCT_AUTO    0
1108
#define FF_DCT_FASTINT 1
1109
#define FF_DCT_INT     2
1110
#define FF_DCT_MMX     3
1111
#define FF_DCT_MLIB    4
1112
#define FF_DCT_ALTIVEC 5
1113
#define FF_DCT_FAAN    6
1114
    
1115
    /**
1116
     * luminance masking (0-> disabled).
1117
     * - encoding: set by user
1118
     * - decoding: unused
1119
     */
1120
    float lumi_masking;
1121
    
1122
    /**
1123
     * temporary complexity masking (0-> disabled).
1124
     * - encoding: set by user
1125
     * - decoding: unused
1126
     */
1127
    float temporal_cplx_masking;
1128
    
1129
    /**
1130
     * spatial complexity masking (0-> disabled).
1131
     * - encoding: set by user
1132
     * - decoding: unused
1133
     */
1134
    float spatial_cplx_masking;
1135
    
1136
    /**
1137
     * p block masking (0-> disabled).
1138
     * - encoding: set by user
1139
     * - decoding: unused
1140
     */
1141
    float p_masking;
1142

    
1143
    /**
1144
     * darkness masking (0-> disabled).
1145
     * - encoding: set by user
1146
     * - decoding: unused
1147
     */
1148
    float dark_masking;
1149
    
1150
    
1151
    /* for binary compatibility */
1152
    int unused;
1153
    
1154
    /**
1155
     * idct algorithm, see FF_IDCT_* below.
1156
     * - encoding: set by user
1157
     * - decoding: set by user
1158
     */
1159
    int idct_algo;
1160
#define FF_IDCT_AUTO         0
1161
#define FF_IDCT_INT          1
1162
#define FF_IDCT_SIMPLE       2
1163
#define FF_IDCT_SIMPLEMMX    3
1164
#define FF_IDCT_LIBMPEG2MMX  4
1165
#define FF_IDCT_PS2          5
1166
#define FF_IDCT_MLIB         6
1167
#define FF_IDCT_ARM          7
1168
#define FF_IDCT_ALTIVEC      8
1169
#define FF_IDCT_SH4          9
1170
#define FF_IDCT_SIMPLEARM    10
1171
#define FF_IDCT_H264         11
1172

    
1173
    /**
1174
     * slice count.
1175
     * - encoding: set by lavc
1176
     * - decoding: set by user (or 0)
1177
     */
1178
    int slice_count;
1179
    /**
1180
     * slice offsets in the frame in bytes.
1181
     * - encoding: set/allocated by lavc
1182
     * - decoding: set/allocated by user (or NULL)
1183
     */
1184
    int *slice_offset;
1185

    
1186
    /**
1187
     * error concealment flags.
1188
     * - encoding: unused
1189
     * - decoding: set by user
1190
     */
1191
    int error_concealment;
1192
#define FF_EC_GUESS_MVS   1
1193
#define FF_EC_DEBLOCK     2
1194

    
1195
    /**
1196
     * dsp_mask could be add used to disable unwanted CPU features
1197
     * CPU features (i.e. MMX, SSE. ...)
1198
     *
1199
     * with FORCE flag you may instead enable given CPU features
1200
     * (Dangerous: usable in case of misdetection, improper usage however will
1201
     * result into program crash)
1202
     */
1203
    unsigned dsp_mask;
1204
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1205
    /* lower 16 bits - CPU features */
1206
#ifdef HAVE_MMX
1207
#define FF_MM_MMX        0x0001 /* standard MMX */
1208
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1209
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1210
#define FF_MM_SSE        0x0008 /* SSE functions */
1211
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1212
#define FF_MM_3DNOWEXT        0x0020 /* AMD 3DNowExt */
1213
#endif /* HAVE_MMX */
1214

    
1215
    /**
1216
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1217
     * - encoding: set by lavc
1218
     * - decoding: set by user
1219
     */
1220
     int bits_per_sample;
1221
    
1222
    /**
1223
     * prediction method (needed for huffyuv).
1224
     * - encoding: set by user
1225
     * - decoding: unused
1226
     */
1227
     int prediction_method;
1228
#define FF_PRED_LEFT   0
1229
#define FF_PRED_PLANE  1
1230
#define FF_PRED_MEDIAN 2
1231
    
1232
    /**
1233
     * sample aspect ratio (0 if unknown).
1234
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1235
     * - encoding: set by user.
1236
     * - decoding: set by lavc.
1237
     */
1238
    AVRational sample_aspect_ratio;
1239

    
1240
    /**
1241
     * the picture in the bitstream.
1242
     * - encoding: set by lavc
1243
     * - decoding: set by lavc
1244
     */
1245
    AVFrame *coded_frame;
1246

    
1247
    /**
1248
     * debug.
1249
     * - encoding: set by user.
1250
     * - decoding: set by user.
1251
     */
1252
    int debug;
1253
#define FF_DEBUG_PICT_INFO 1
1254
#define FF_DEBUG_RC        2
1255
#define FF_DEBUG_BITSTREAM 4
1256
#define FF_DEBUG_MB_TYPE   8
1257
#define FF_DEBUG_QP        16
1258
#define FF_DEBUG_MV        32
1259
#define FF_DEBUG_DCT_COEFF 0x00000040
1260
#define FF_DEBUG_SKIP      0x00000080
1261
#define FF_DEBUG_STARTCODE 0x00000100
1262
#define FF_DEBUG_PTS       0x00000200
1263
#define FF_DEBUG_ER        0x00000400
1264
#define FF_DEBUG_MMCO      0x00000800
1265
#define FF_DEBUG_BUGS      0x00001000
1266
#define FF_DEBUG_VIS_QP    0x00002000
1267
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1268
    
1269
    /**
1270
     * debug.
1271
     * - encoding: set by user.
1272
     * - decoding: set by user.
1273
     */
1274
    int debug_mv;
1275
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1276
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1277
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1278

    
1279
    /**
1280
     * error.
1281
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1282
     * - decoding: unused
1283
     */
1284
    uint64_t error[4];
1285
    
1286
    /**
1287
     * minimum MB quantizer.
1288
     * - encoding: unused
1289
     * - decoding: unused
1290
     */
1291
    int mb_qmin;
1292

    
1293
    /**
1294
     * maximum MB quantizer.
1295
     * - encoding: unused
1296
     * - decoding: unused
1297
     */
1298
    int mb_qmax;
1299
    
1300
    /**
1301
     * motion estimation compare function.
1302
     * - encoding: set by user.
1303
     * - decoding: unused
1304
     */
1305
    int me_cmp;
1306
    /**
1307
     * subpixel motion estimation compare function.
1308
     * - encoding: set by user.
1309
     * - decoding: unused
1310
     */
1311
    int me_sub_cmp;
1312
    /**
1313
     * macroblock compare function (not supported yet).
1314
     * - encoding: set by user.
1315
     * - decoding: unused
1316
     */
1317
    int mb_cmp;
1318
    /**
1319
     * interlaced dct compare function
1320
     * - encoding: set by user.
1321
     * - decoding: unused
1322
     */
1323
    int ildct_cmp;
1324
#define FF_CMP_SAD  0
1325
#define FF_CMP_SSE  1
1326
#define FF_CMP_SATD 2
1327
#define FF_CMP_DCT  3
1328
#define FF_CMP_PSNR 4
1329
#define FF_CMP_BIT  5
1330
#define FF_CMP_RD   6
1331
#define FF_CMP_ZERO 7
1332
#define FF_CMP_VSAD 8
1333
#define FF_CMP_VSSE 9
1334
#define FF_CMP_NSSE 10
1335
#define FF_CMP_W53  11
1336
#define FF_CMP_W97  12
1337
#define FF_CMP_DCTMAX 13
1338
#define FF_CMP_CHROMA 256
1339
    
1340
    /**
1341
     * ME diamond size & shape.
1342
     * - encoding: set by user.
1343
     * - decoding: unused
1344
     */
1345
    int dia_size;
1346

    
1347
    /**
1348
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1349
     * - encoding: set by user.
1350
     * - decoding: unused
1351
     */
1352
    int last_predictor_count;
1353

    
1354
    /**
1355
     * pre pass for motion estimation.
1356
     * - encoding: set by user.
1357
     * - decoding: unused
1358
     */
1359
    int pre_me;
1360

    
1361
    /**
1362
     * motion estimation pre pass compare function.
1363
     * - encoding: set by user.
1364
     * - decoding: unused
1365
     */
1366
    int me_pre_cmp;
1367

    
1368
    /**
1369
     * ME pre pass diamond size & shape.
1370
     * - encoding: set by user.
1371
     * - decoding: unused
1372
     */
1373
    int pre_dia_size;
1374

    
1375
    /**
1376
     * subpel ME quality.
1377
     * - encoding: set by user.
1378
     * - decoding: unused
1379
     */
1380
    int me_subpel_quality;
1381

    
1382
    /**
1383
     * callback to negotiate the pixelFormat.
1384
     * @param fmt is the list of formats which are supported by the codec,
1385
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1386
     * the first is allways the native one
1387
     * @return the choosen format
1388
     * - encoding: unused
1389
     * - decoding: set by user, if not set then the native format will always be choosen
1390
     */
1391
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1392

    
1393
    /**
1394
     * DTG active format information (additionnal aspect ratio
1395
     * information only used in DVB MPEG2 transport streams). 0 if
1396
     * not set.
1397
     * 
1398
     * - encoding: unused.
1399
     * - decoding: set by decoder 
1400
     */
1401
    int dtg_active_format;
1402
#define FF_DTG_AFD_SAME         8
1403
#define FF_DTG_AFD_4_3          9
1404
#define FF_DTG_AFD_16_9         10
1405
#define FF_DTG_AFD_14_9         11
1406
#define FF_DTG_AFD_4_3_SP_14_9  13
1407
#define FF_DTG_AFD_16_9_SP_14_9 14
1408
#define FF_DTG_AFD_SP_4_3       15
1409

    
1410
    /**
1411
     * Maximum motion estimation search range in subpel units.
1412
     * if 0 then no limit
1413
     * 
1414
     * - encoding: set by user.
1415
     * - decoding: unused.
1416
     */
1417
    int me_range;
1418

    
1419
    /**
1420
     * frame_rate_base.
1421
     * for variable fps this is 1
1422
     * - encoding: set by user.
1423
     * - decoding: set by lavc.
1424
     * @todo move this after frame_rate
1425
     */
1426

    
1427
    int frame_rate_base;
1428
    /**
1429
     * intra quantizer bias.
1430
     * - encoding: set by user.
1431
     * - decoding: unused
1432
     */
1433
    int intra_quant_bias;
1434
#define FF_DEFAULT_QUANT_BIAS 999999
1435
    
1436
    /**
1437
     * inter quantizer bias.
1438
     * - encoding: set by user.
1439
     * - decoding: unused
1440
     */
1441
    int inter_quant_bias;
1442

    
1443
    /**
1444
     * color table ID.
1445
     * - encoding: unused.
1446
     * - decoding: which clrtable should be used for 8bit RGB images
1447
     *             table have to be stored somewhere FIXME
1448
     */
1449
    int color_table_id;
1450
    
1451
    /**
1452
     * internal_buffer count. 
1453
     * Dont touch, used by lavc default_get_buffer()
1454
     */
1455
    int internal_buffer_count;
1456
    
1457
    /**
1458
     * internal_buffers. 
1459
     * Dont touch, used by lavc default_get_buffer()
1460
     */
1461
    void *internal_buffer;
1462

    
1463
#define FF_LAMBDA_SHIFT 7
1464
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1465
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1466
#define FF_LAMBDA_MAX (256*128-1)
1467

    
1468
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1469
    /**
1470
     * global quality for codecs which cannot change it per frame.
1471
     * this should be proportional to MPEG1/2/4 qscale.
1472
     * - encoding: set by user.
1473
     * - decoding: unused
1474
     */
1475
    int global_quality;
1476
    
1477
#define FF_CODER_TYPE_VLC   0
1478
#define FF_CODER_TYPE_AC    1
1479
    /**
1480
     * coder type
1481
     * - encoding: set by user.
1482
     * - decoding: unused
1483
     */
1484
    int coder_type;
1485

    
1486
    /**
1487
     * context model
1488
     * - encoding: set by user.
1489
     * - decoding: unused
1490
     */
1491
    int context_model;
1492
    
1493
    /**
1494
     * slice flags
1495
     * - encoding: unused
1496
     * - decoding: set by user.
1497
     */
1498
    int slice_flags;
1499
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1500
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1501
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1502

    
1503
    /**
1504
     * XVideo Motion Acceleration
1505
     * - encoding: forbidden
1506
     * - decoding: set by decoder
1507
     */
1508
    int xvmc_acceleration;
1509
    
1510
    /**
1511
     * macroblock decision mode
1512
     * - encoding: set by user.
1513
     * - decoding: unused
1514
     */
1515
    int mb_decision;
1516
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1517
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1518
#define FF_MB_DECISION_RD     2        ///< rate distoration
1519

    
1520
    /**
1521
     * custom intra quantization matrix
1522
     * - encoding: set by user, can be NULL
1523
     * - decoding: set by lavc
1524
     */
1525
    uint16_t *intra_matrix;
1526

    
1527
    /**
1528
     * custom inter quantization matrix
1529
     * - encoding: set by user, can be NULL
1530
     * - decoding: set by lavc
1531
     */
1532
    uint16_t *inter_matrix;
1533
    
1534
    /**
1535
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1536
     * this is used to workaround some encoder bugs
1537
     * - encoding: unused
1538
     * - decoding: set by user, will be converted to upper case by lavc during init
1539
     */
1540
    unsigned int stream_codec_tag;
1541

    
1542
    /**
1543
     * scene change detection threshold.
1544
     * 0 is default, larger means fewer detected scene changes
1545
     * - encoding: set by user.
1546
     * - decoding: unused
1547
     */
1548
    int scenechange_threshold;
1549

    
1550
    /**
1551
     * minimum lagrange multipler
1552
     * - encoding: set by user.
1553
     * - decoding: unused
1554
     */
1555
    int lmin;
1556

    
1557
    /**
1558
     * maximum lagrange multipler
1559
     * - encoding: set by user.
1560
     * - decoding: unused
1561
     */
1562
    int lmax;
1563

    
1564
    /**
1565
     * Palette control structure
1566
     * - encoding: ??? (no palette-enabled encoder yet)
1567
     * - decoding: set by user.
1568
     */
1569
    struct AVPaletteControl *palctrl;
1570

    
1571
    /**
1572
     * noise reduction strength
1573
     * - encoding: set by user.
1574
     * - decoding: unused
1575
     */
1576
    int noise_reduction;
1577
    
1578
    /**
1579
     * called at the beginning of a frame to get cr buffer for it.
1580
     * buffer type (size, hints) must be the same. lavc won't check it.
1581
     * lavc will pass previous buffer in pic, function should return
1582
     * same buffer or new buffer with old frame "painted" into it.
1583
     * if pic.data[0] == NULL must behave like get_buffer().
1584
     * - encoding: unused
1585
     * - decoding: set by lavc, user can override
1586
     */
1587
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1588

    
1589
    /**
1590
     * number of bits which should be loaded into the rc buffer before decoding starts
1591
     * - encoding: set by user.
1592
     * - decoding: unused
1593
     */
1594
    int rc_initial_buffer_occupancy;
1595

    
1596
    /**
1597
     *
1598
     * - encoding: set by user.
1599
     * - decoding: unused
1600
     */
1601
    int inter_threshold;
1602

    
1603
    /**
1604
     * CODEC_FLAG2_*.
1605
     * - encoding: set by user.
1606
     * - decoding: set by user.
1607
     */
1608
    int flags2;
1609

    
1610
    /**
1611
     * simulates errors in the bitstream to test error concealment.
1612
     * - encoding: set by user.
1613
     * - decoding: unused.
1614
     */
1615
    int error_rate;
1616
    
1617
    /**
1618
     * MP3 antialias algorithm, see FF_AA_* below.
1619
     * - encoding: unused
1620
     * - decoding: set by user
1621
     */
1622
    int antialias_algo;
1623
#define FF_AA_AUTO    0
1624
#define FF_AA_FASTINT 1 //not implemented yet
1625
#define FF_AA_INT     2
1626
#define FF_AA_FLOAT   3
1627
    /**
1628
     * Quantizer noise shaping.
1629
     * - encoding: set by user
1630
     * - decoding: unused
1631
     */
1632
    int quantizer_noise_shaping;
1633

    
1634
    /**
1635
     * Thread count.
1636
     * is used to decide how many independant tasks should be passed to execute()
1637
     * - encoding: set by user
1638
     * - decoding: set by user
1639
     */
1640
    int thread_count;
1641
    
1642
    /**
1643
     * the codec may call this to execute several independant things. it will return only after
1644
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1645
     * default implementation will execute the parts serially
1646
     * @param count the number of things to execute
1647
     * - encoding: set by lavc, user can override
1648
     * - decoding: set by lavc, user can override
1649
     */
1650
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1651
    
1652
    /**
1653
     * Thread opaque.
1654
     * can be used by execute() to store some per AVCodecContext stuff.
1655
     * - encoding: set by execute()
1656
     * - decoding: set by execute()
1657
     */
1658
    void *thread_opaque;
1659

    
1660
    /**
1661
     * Motion estimation threshold. under which no motion estimation is 
1662
     * performed, but instead the user specified motion vectors are used
1663
     * 
1664
     * - encoding: set by user
1665
     * - decoding: unused
1666
     */
1667
     int me_threshold;
1668

    
1669
    /**
1670
     * Macroblock threshold. under which the user specified macroblock types will be used
1671
     * - encoding: set by user
1672
     * - decoding: unused
1673
     */
1674
     int mb_threshold;
1675

    
1676
    /**
1677
     * precision of the intra dc coefficient - 8.
1678
     * - encoding: set by user
1679
     * - decoding: unused
1680
     */
1681
     int intra_dc_precision;
1682

    
1683
    /**
1684
     * noise vs. sse weight for the nsse comparsion function.
1685
     * - encoding: set by user
1686
     * - decoding: unused
1687
     */
1688
     int nsse_weight;
1689

    
1690
    /**
1691
     * number of macroblock rows at the top which are skiped.
1692
     * - encoding: unused
1693
     * - decoding: set by user
1694
     */
1695
     int skip_top;
1696

    
1697
    /**
1698
     * number of macroblock rows at the bottom which are skiped.
1699
     * - encoding: unused
1700
     * - decoding: set by user
1701
     */
1702
     int skip_bottom;
1703

    
1704
    /**
1705
     * profile
1706
     * - encoding: set by user
1707
     * - decoding: set by lavc
1708
     */
1709
     int profile;
1710
#define FF_PROFILE_UNKNOWN -99
1711

    
1712
    /**
1713
     * level
1714
     * - encoding: set by user
1715
     * - decoding: set by lavc
1716
     */
1717
     int level;
1718
#define FF_LEVEL_UNKNOWN -99
1719

    
1720
    /**
1721
     * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1722
     * - encoding: unused
1723
     * - decoding: set by user
1724
     */
1725
     int lowres;
1726

    
1727
    /**
1728
     * bitsream width / height. may be different from width/height if lowres
1729
     * or other things are used
1730
     * - encoding: unused
1731
     * - decoding: set by user before init if known, codec should override / dynamically change if needed
1732
     */
1733
    int coded_width, coded_height;
1734

    
1735
    /**
1736
     * frame skip threshold
1737
     * - encoding: set by user
1738
     * - decoding: unused
1739
     */
1740
    int frame_skip_threshold;
1741

    
1742
    /**
1743
     * frame skip factor
1744
     * - encoding: set by user
1745
     * - decoding: unused
1746
     */
1747
    int frame_skip_factor;
1748

    
1749
    /**
1750
     * frame skip exponent
1751
     * - encoding: set by user
1752
     * - decoding: unused
1753
     */
1754
    int frame_skip_exp;
1755

    
1756
    /**
1757
     * frame skip comparission function
1758
     * - encoding: set by user.
1759
     * - decoding: unused
1760
     */
1761
    int frame_skip_cmp;
1762

    
1763
    /**
1764
     * border processing masking. raises the quantizer for mbs on the borders
1765
     * of the picture.
1766
     * - encoding: set by user
1767
     * - decoding: unused
1768
     */
1769
    float border_masking;
1770

    
1771
    /**
1772
     * minimum MB lagrange multipler.
1773
     * - encoding: set by user.
1774
     * - decoding: unused
1775
     */
1776
    int mb_lmin;
1777

    
1778
    /**
1779
     * maximum MB lagrange multipler.
1780
     * - encoding: set by user.
1781
     * - decoding: unused
1782
     */
1783
    int mb_lmax;
1784
} AVCodecContext;
1785

    
1786

    
1787
/**
1788
 * AVOption.
1789
 */
1790
typedef struct AVOption {
1791
    /** options' name */
1792
    const char *name; /* if name is NULL, it indicates a link to next */
1793
    /** short English text help or const struct AVOption* subpointer */
1794
    const char *help; //        const struct AVOption* sub;
1795
    /** offset to context structure where the parsed value should be stored */
1796
    int offset;
1797
    /** options' type */
1798
    int type;
1799
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1800
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1801
#define FF_OPT_TYPE_INT 3       ///< integer
1802
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1803
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1804
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1805
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1806
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1807
    /** min value  (min == max   ->  no limits) */
1808
    double min;
1809
    /** maximum value for double/int */
1810
    double max;
1811
    /** default boo [0,1]l/double/int value */
1812
    double defval;
1813
    /**
1814
     * default string value (with optional semicolon delimited extra option-list
1815
     * i.e.   option1;option2;option3
1816
     * defval might select other then first argument as default
1817
     */
1818
    const char *defstr;
1819
#define FF_OPT_MAX_DEPTH 10
1820
} AVOption;
1821

    
1822
/**
1823
 * AVCodec.
1824
 */
1825
typedef struct AVCodec {
1826
    const char *name;
1827
    enum CodecType type;
1828
    enum CodecID id;
1829
    int priv_data_size;
1830
    int (*init)(AVCodecContext *);
1831
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1832
    int (*close)(AVCodecContext *);
1833
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1834
                  uint8_t *buf, int buf_size);
1835
    int capabilities;
1836
    void *dummy; // FIXME remove next time we break binary compatibility
1837
    struct AVCodec *next;
1838
    void (*flush)(AVCodecContext *);
1839
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1840
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1841
} AVCodec;
1842

    
1843
/**
1844
 * four components are given, that's all.
1845
 * the last component is alpha
1846
 */
1847
typedef struct AVPicture {
1848
    uint8_t *data[4];
1849
    int linesize[4];       ///< number of bytes per line
1850
} AVPicture;
1851

    
1852
/**
1853
 * AVPaletteControl
1854
 * This structure defines a method for communicating palette changes
1855
 * between and demuxer and a decoder.
1856
 */
1857
#define AVPALETTE_SIZE 1024
1858
#define AVPALETTE_COUNT 256
1859
typedef struct AVPaletteControl {
1860

    
1861
    /* demuxer sets this to 1 to indicate the palette has changed;
1862
     * decoder resets to 0 */
1863
    int palette_changed;
1864

    
1865
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1866
     * the individual palette components should be on a 8-bit scale; if
1867
     * the palette data comes from a IBM VGA native format, the component
1868
     * data is probably 6 bits in size and needs to be scaled */
1869
    unsigned int palette[AVPALETTE_COUNT];
1870

    
1871
} AVPaletteControl;
1872

    
1873
extern AVCodec ac3_encoder;
1874
extern AVCodec mp2_encoder;
1875
extern AVCodec mp3lame_encoder;
1876
extern AVCodec oggvorbis_encoder;
1877
extern AVCodec oggtheora_encoder;
1878
extern AVCodec faac_encoder;
1879
extern AVCodec xvid_encoder;
1880
extern AVCodec mpeg1video_encoder;
1881
extern AVCodec mpeg2video_encoder;
1882
extern AVCodec h261_encoder;
1883
extern AVCodec h263_encoder;
1884
extern AVCodec h263p_encoder;
1885
extern AVCodec flv_encoder;
1886
extern AVCodec rv10_encoder;
1887
extern AVCodec rv20_encoder;
1888
extern AVCodec dvvideo_encoder;
1889
extern AVCodec mjpeg_encoder;
1890
extern AVCodec ljpeg_encoder;
1891
extern AVCodec png_encoder;
1892
extern AVCodec ppm_encoder;
1893
extern AVCodec pgm_encoder;
1894
extern AVCodec pgmyuv_encoder;
1895
extern AVCodec pbm_encoder;
1896
extern AVCodec pam_encoder;
1897
extern AVCodec mpeg4_encoder;
1898
extern AVCodec msmpeg4v1_encoder;
1899
extern AVCodec msmpeg4v2_encoder;
1900
extern AVCodec msmpeg4v3_encoder;
1901
extern AVCodec wmv1_encoder;
1902
extern AVCodec wmv2_encoder;
1903
extern AVCodec huffyuv_encoder;
1904
extern AVCodec ffvhuff_encoder;
1905
extern AVCodec h264_encoder;
1906
extern AVCodec asv1_encoder;
1907
extern AVCodec asv2_encoder;
1908
extern AVCodec vcr1_encoder;
1909
extern AVCodec ffv1_encoder;
1910
extern AVCodec snow_encoder;
1911
extern AVCodec mdec_encoder;
1912
extern AVCodec zlib_encoder;
1913
extern AVCodec sonic_encoder;
1914
extern AVCodec sonic_ls_encoder;
1915
extern AVCodec svq1_encoder;
1916
extern AVCodec x264_encoder;
1917

    
1918
extern AVCodec h263_decoder;
1919
extern AVCodec h261_decoder;
1920
extern AVCodec mpeg4_decoder;
1921
extern AVCodec msmpeg4v1_decoder;
1922
extern AVCodec msmpeg4v2_decoder;
1923
extern AVCodec msmpeg4v3_decoder;
1924
extern AVCodec wmv1_decoder;
1925
extern AVCodec wmv2_decoder;
1926
extern AVCodec vc9_decoder;
1927
extern AVCodec wmv3_decoder;
1928
extern AVCodec mpeg1video_decoder;
1929
extern AVCodec mpeg2video_decoder;
1930
extern AVCodec mpegvideo_decoder;
1931
extern AVCodec mpeg_xvmc_decoder;
1932
extern AVCodec h263i_decoder;
1933
extern AVCodec flv_decoder;
1934
extern AVCodec rv10_decoder;
1935
extern AVCodec rv20_decoder;
1936
extern AVCodec rv30_decoder;
1937
extern AVCodec rv40_decoder;
1938
extern AVCodec svq1_decoder;
1939
extern AVCodec svq3_decoder;
1940
extern AVCodec dvvideo_decoder;
1941
extern AVCodec wmav1_decoder;
1942
extern AVCodec wmav2_decoder;
1943
extern AVCodec mjpeg_decoder;
1944
extern AVCodec mjpegb_decoder;
1945
extern AVCodec sp5x_decoder;
1946
extern AVCodec png_decoder;
1947
extern AVCodec mp2_decoder;
1948
extern AVCodec mp3_decoder;
1949
extern AVCodec mp3adu_decoder;
1950
extern AVCodec mp3on4_decoder;
1951
extern AVCodec mace3_decoder;
1952
extern AVCodec mace6_decoder;
1953
extern AVCodec huffyuv_decoder;
1954
extern AVCodec ffvhuff_decoder;
1955
extern AVCodec oggvorbis_decoder;
1956
extern AVCodec oggtheora_decoder;
1957
extern AVCodec cyuv_decoder;
1958
extern AVCodec h264_decoder;
1959
extern AVCodec indeo3_decoder;
1960
extern AVCodec vp3_decoder;
1961
extern AVCodec theora_decoder;
1962
extern AVCodec amr_nb_decoder;
1963
extern AVCodec amr_nb_encoder;
1964
extern AVCodec amr_wb_encoder;
1965
extern AVCodec amr_wb_decoder;
1966
extern AVCodec aac_decoder;
1967
extern AVCodec mpeg4aac_decoder;
1968
extern AVCodec asv1_decoder;
1969
extern AVCodec asv2_decoder;
1970
extern AVCodec vcr1_decoder;
1971
extern AVCodec cljr_decoder;
1972
extern AVCodec ffv1_decoder;
1973
extern AVCodec snow_decoder;
1974
extern AVCodec fourxm_decoder;
1975
extern AVCodec mdec_decoder;
1976
extern AVCodec roq_decoder;
1977
extern AVCodec interplay_video_decoder;
1978
extern AVCodec xan_wc3_decoder;
1979
extern AVCodec rpza_decoder;
1980
extern AVCodec cinepak_decoder;
1981
extern AVCodec msrle_decoder;
1982
extern AVCodec msvideo1_decoder;
1983
extern AVCodec vqa_decoder;
1984
extern AVCodec idcin_decoder;
1985
extern AVCodec eightbps_decoder;
1986
extern AVCodec smc_decoder;
1987
extern AVCodec flic_decoder;
1988
extern AVCodec vmdvideo_decoder;
1989
extern AVCodec vmdaudio_decoder;
1990
extern AVCodec truemotion1_decoder;
1991
extern AVCodec mszh_decoder;
1992
extern AVCodec zlib_decoder;
1993
extern AVCodec ra_144_decoder;
1994
extern AVCodec ra_288_decoder;
1995
extern AVCodec roq_dpcm_decoder;
1996
extern AVCodec interplay_dpcm_decoder;
1997
extern AVCodec xan_dpcm_decoder;
1998
extern AVCodec sol_dpcm_decoder;
1999
extern AVCodec sonic_decoder;
2000
extern AVCodec qtrle_decoder;
2001
extern AVCodec flac_decoder;
2002
extern AVCodec tscc_decoder;
2003
extern AVCodec ulti_decoder;
2004
extern AVCodec qdraw_decoder;
2005
extern AVCodec xl_decoder;
2006
extern AVCodec qpeg_decoder;
2007
extern AVCodec shorten_decoder;
2008
extern AVCodec loco_decoder;
2009
extern AVCodec wnv1_decoder;
2010
extern AVCodec alac_decoder;
2011

    
2012
/* pcm codecs */
2013
#define PCM_CODEC(id, name) \
2014
extern AVCodec name ## _decoder; \
2015
extern AVCodec name ## _encoder
2016

    
2017
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2018
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2019
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2020
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2021
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2022
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2023
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2024
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2025

    
2026
/* adpcm codecs */
2027

    
2028
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2029
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2030
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2031
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2032
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2033
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2034
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2035
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2036
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2037
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2038
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2039
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2040
PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2041
PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2042

    
2043
#undef PCM_CODEC
2044

    
2045
/* dummy raw video codec */
2046
extern AVCodec rawvideo_encoder;
2047
extern AVCodec rawvideo_decoder;
2048

    
2049
/* the following codecs use external GPL libs */
2050
extern AVCodec ac3_decoder;
2051
extern AVCodec dts_decoder;
2052

    
2053
/* resample.c */
2054

    
2055
struct ReSampleContext;
2056
struct AVResampleContext;
2057

    
2058
typedef struct ReSampleContext ReSampleContext;
2059

    
2060
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
2061
                                     int output_rate, int input_rate);
2062
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2063
void audio_resample_close(ReSampleContext *s);
2064

    
2065
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2066
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2067
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2068
void av_resample_close(struct AVResampleContext *c);
2069

    
2070
/* YUV420 format is assumed ! */
2071

    
2072
struct ImgReSampleContext;
2073

    
2074
typedef struct ImgReSampleContext ImgReSampleContext;
2075

    
2076
ImgReSampleContext *img_resample_init(int output_width, int output_height,
2077
                                      int input_width, int input_height);
2078

    
2079
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2080
                                      int iwidth, int iheight,
2081
                                      int topBand, int bottomBand,
2082
                                      int leftBand, int rightBand,
2083
                                      int padtop, int padbottom,
2084
                                      int padleft, int padright);
2085

    
2086

    
2087
void img_resample(ImgReSampleContext *s, 
2088
                  AVPicture *output, const AVPicture *input);
2089

    
2090
void img_resample_close(ImgReSampleContext *s);
2091

    
2092
/**
2093
 * Allocate memory for a picture.  Call avpicture_free to free it.
2094
 *
2095
 * @param picture the picture to be filled in.
2096
 * @param pix_fmt the format of the picture.
2097
 * @param width the width of the picture.
2098
 * @param height the height of the picture.
2099
 * @return 0 if successful, -1 if not.
2100
 */
2101
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2102

    
2103
/* Free a picture previously allocated by avpicture_alloc. */
2104
void avpicture_free(AVPicture *picture);
2105

    
2106
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2107
                   int pix_fmt, int width, int height);
2108
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2109
                     unsigned char *dest, int dest_size);
2110
int avpicture_get_size(int pix_fmt, int width, int height);
2111
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2112
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2113
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2114
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2115
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2116

    
2117
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
2118
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
2119
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
2120
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
2121
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
2122
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2123

    
2124
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2125
                             int has_alpha);
2126
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2127
                              int has_alpha, int *loss_ptr);
2128

    
2129
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2130
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2131
int img_get_alpha_info(const AVPicture *src,
2132
                       int pix_fmt, int width, int height);
2133

    
2134
/* convert among pixel formats */
2135
int img_convert(AVPicture *dst, int dst_pix_fmt,
2136
                const AVPicture *src, int pix_fmt, 
2137
                int width, int height);
2138

    
2139
/* deinterlace a picture */
2140
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2141
                          int pix_fmt, int width, int height);
2142

    
2143
/* external high level API */
2144

    
2145
extern AVCodec *first_avcodec;
2146

    
2147
/* returns LIBAVCODEC_VERSION_INT constant */
2148
unsigned avcodec_version(void);
2149
/* returns LIBAVCODEC_BUILD constant */
2150
unsigned avcodec_build(void);
2151
void avcodec_init(void);
2152

    
2153
void register_avcodec(AVCodec *format);
2154
AVCodec *avcodec_find_encoder(enum CodecID id);
2155
AVCodec *avcodec_find_encoder_by_name(const char *name);
2156
AVCodec *avcodec_find_decoder(enum CodecID id);
2157
AVCodec *avcodec_find_decoder_by_name(const char *name);
2158
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2159

    
2160
void avcodec_get_context_defaults(AVCodecContext *s);
2161
AVCodecContext *avcodec_alloc_context(void);
2162
void avcodec_get_frame_defaults(AVFrame *pic);
2163
AVFrame *avcodec_alloc_frame(void);
2164

    
2165
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2166
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2167
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2168
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2169
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2170
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2171

    
2172
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2173
void avcodec_thread_free(AVCodecContext *s);
2174
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2175
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2176
//FIXME func typedef
2177

    
2178
/**
2179
 * opens / inits the AVCodecContext.
2180
 * not thread save!
2181
 */
2182
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2183

    
2184
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
2185
                         int *frame_size_ptr,
2186
                         uint8_t *buf, int buf_size);
2187
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
2188
                         int *got_picture_ptr,
2189
                         uint8_t *buf, int buf_size);
2190
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
2191
                        int *data_size_ptr,
2192
                        uint8_t *buf, int buf_size);
2193
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2194
                         const short *samples);
2195
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2196
                         const AVFrame *pict);
2197

    
2198
int avcodec_close(AVCodecContext *avctx);
2199

    
2200
void avcodec_register_all(void);
2201

    
2202
void avcodec_flush_buffers(AVCodecContext *avctx);
2203

    
2204
void avcodec_default_free_buffers(AVCodecContext *s);
2205

    
2206
/* misc usefull functions */
2207

    
2208
/**
2209
 * returns a single letter to describe the picture type
2210
 */
2211
char av_get_pict_type_char(int pict_type);
2212

    
2213
/**
2214
 * reduce a fraction.
2215
 * this is usefull for framerate calculations
2216
 * @param max the maximum allowed for dst_nom & dst_den
2217
 * @return 1 if exact, 0 otherwise
2218
 */
2219
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2220

    
2221
/**
2222
 * rescale a 64bit integer with rounding to nearest.
2223
 * a simple a*b/c isnt possible as it can overflow
2224
 */
2225
int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2226

    
2227
/**
2228
 * rescale a 64bit integer with specified rounding.
2229
 * a simple a*b/c isnt possible as it can overflow
2230
 */
2231
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
2232

    
2233
/* frame parsing */
2234
typedef struct AVCodecParserContext {
2235
    void *priv_data;
2236
    struct AVCodecParser *parser;
2237
    int64_t frame_offset; /* offset of the current frame */
2238
    int64_t cur_offset; /* current offset 
2239
                           (incremented by each av_parser_parse()) */
2240
    int64_t last_frame_offset; /* offset of the last frame */
2241
    /* video info */
2242
    int pict_type; /* XXX: put it back in AVCodecContext */
2243
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2244
    int64_t pts;     /* pts of the current frame */
2245
    int64_t dts;     /* dts of the current frame */
2246

    
2247
    /* private data */
2248
    int64_t last_pts;
2249
    int64_t last_dts;
2250
    int fetch_timestamp;
2251

    
2252
#define AV_PARSER_PTS_NB 4
2253
    int cur_frame_start_index;
2254
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2255
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2256
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2257
} AVCodecParserContext;
2258

    
2259
typedef struct AVCodecParser {
2260
    int codec_ids[5]; /* several codec IDs are permitted */
2261
    int priv_data_size;
2262
    int (*parser_init)(AVCodecParserContext *s);
2263
    int (*parser_parse)(AVCodecParserContext *s, 
2264
                        AVCodecContext *avctx,
2265
                        uint8_t **poutbuf, int *poutbuf_size, 
2266
                        const uint8_t *buf, int buf_size);
2267
    void (*parser_close)(AVCodecParserContext *s);
2268
    struct AVCodecParser *next;
2269
} AVCodecParser;
2270

    
2271
extern AVCodecParser *av_first_parser;
2272

    
2273
void av_register_codec_parser(AVCodecParser *parser);
2274
AVCodecParserContext *av_parser_init(int codec_id);
2275
int av_parser_parse(AVCodecParserContext *s, 
2276
                    AVCodecContext *avctx,
2277
                    uint8_t **poutbuf, int *poutbuf_size, 
2278
                    const uint8_t *buf, int buf_size,
2279
                    int64_t pts, int64_t dts);
2280
void av_parser_close(AVCodecParserContext *s);
2281

    
2282
extern AVCodecParser mpegvideo_parser;
2283
extern AVCodecParser mpeg4video_parser;
2284
extern AVCodecParser h261_parser;
2285
extern AVCodecParser h263_parser;
2286
extern AVCodecParser h264_parser;
2287
extern AVCodecParser mjpeg_parser;
2288
extern AVCodecParser pnm_parser;
2289
extern AVCodecParser mpegaudio_parser;
2290
extern AVCodecParser ac3_parser;
2291

    
2292
/* memory */
2293
void *av_malloc(unsigned int size);
2294
void *av_mallocz(unsigned int size);
2295
void *av_realloc(void *ptr, unsigned int size);
2296
void av_free(void *ptr);
2297
char *av_strdup(const char *s);
2298
void av_freep(void *ptr);
2299
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2300
/* for static data only */
2301
/* call av_free_static to release all staticaly allocated tables */
2302
void av_free_static(void);
2303
void *av_mallocz_static(unsigned int size);
2304
void *av_realloc_static(void *ptr, unsigned int size);
2305

    
2306
/* add by bero : in adx.c */
2307
int is_adx(const unsigned char *buf,size_t bufsize);
2308

    
2309
void img_copy(AVPicture *dst, const AVPicture *src,
2310
              int pix_fmt, int width, int height);
2311

    
2312
/* av_log API */
2313

    
2314
#include <stdarg.h>
2315

    
2316
#define AV_LOG_QUIET -1
2317
#define AV_LOG_ERROR 0
2318
#define AV_LOG_INFO 1
2319
#define AV_LOG_DEBUG 2
2320

    
2321
#ifdef __GNUC__
2322
extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2323
#else
2324
extern void av_log(void*, int level, const char *fmt, ...);
2325
#endif
2326

    
2327
extern void av_vlog(void*, int level, const char *fmt, va_list);
2328
extern int av_log_get_level(void);
2329
extern void av_log_set_level(int);
2330
extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2331

    
2332
/* endian macros */
2333
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2334
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2335
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2336
                   (((uint8_t*)(x))[1] << 16) | \
2337
                   (((uint8_t*)(x))[2] << 8) | \
2338
                    ((uint8_t*)(x))[3])
2339
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2340
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2341
                   (((uint8_t*)(x))[2] << 16) | \
2342
                   (((uint8_t*)(x))[1] << 8) | \
2343
                    ((uint8_t*)(x))[0])
2344
#endif
2345

    
2346
#ifdef __cplusplus
2347
}
2348
#endif
2349

    
2350
#endif /* AVCODEC_H */