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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       4746
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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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    /* 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
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 */
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#define CODEC_CAP_DR1             0x0002
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/* if 'parse_only' field is true, then avcodec_parse_frame() can be
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   used */
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#define CODEC_CAP_PARSE_ONLY      0x0004
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#define CODEC_CAP_TRUNCATED       0x0008
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/* codec can export data for HW decoding (XvMC) */
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#define CODEC_CAP_HWACCEL         0x0010
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/** 
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 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
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 * if this is not set, the codec is guranteed to never be feeded with NULL data
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 */
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#define CODEC_CAP_DELAY           0x0020
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//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.
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 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
384
 */
385
typedef struct AVPanScan{
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    /**
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     * id.
388
     * - encoding: set by user.
389
     * - decoding: set by lavc
390
     */
391
    int id;
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    /**
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     * width and height in 1/16 pel
395
     * - encoding: set by user.
396
     * - decoding: set by lavc
397
     */
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    int width;
399
    int height;
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    /**
402
     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
403
     * - encoding: set by user.
404
     * - decoding: set by lavc
405
     */
406
    int16_t position[3][2];
407
}AVPanScan;
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409
#define FF_COMMON_FRAME \
410
    /**\
411
     * pointer to the picture planes.\
412
     * this might be different from the first allocated byte\
413
     * - encoding: \
414
     * - decoding: \
415
     */\
416
    uint8_t *data[4];\
417
    int linesize[4];\
418
    /**\
419
     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
420
     * this isnt used by lavc unless the default get/release_buffer() is used\
421
     * - encoding: \
422
     * - decoding: \
423
     */\
424
    uint8_t *base[4];\
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    /**\
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     * 1 -> keyframe, 0-> not\
427
     * - encoding: set by lavc\
428
     * - decoding: set by lavc\
429
     */\
430
    int key_frame;\
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\
432
    /**\
433
     * picture type of the frame, see ?_TYPE below.\
434
     * - encoding: set by lavc for coded_picture (and set by user for input)\
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     * - decoding: set by lavc\
436
     */\
437
    int pict_type;\
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\
439
    /**\
440
     * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
441
     * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
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     * - encoding: MUST be set by user\
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     * - decoding: set by lavc\
444
     */\
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    int64_t pts;\
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\
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    /**\
448
     * picture number in bitstream order.\
449
     * - encoding: set by\
450
     * - decoding: set by lavc\
451
     */\
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    int coded_picture_number;\
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    /**\
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     * picture number in display order.\
455
     * - encoding: set by\
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     * - decoding: set by lavc\
457
     */\
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    int display_picture_number;\
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\
460
    /**\
461
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
462
     * - encoding: set by lavc for coded_picture (and set by user for input)\
463
     * - decoding: set by lavc\
464
     */\
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    int quality; \
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\
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    /**\
468
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
469
     * set to INT_MAX if the buffer has not been used yet \
470
     * - encoding: unused\
471
     * - decoding: MUST be set by get_buffer()\
472
     */\
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    int age;\
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\
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    /**\
476
     * is this picture used as reference\
477
     * - encoding: unused\
478
     * - decoding: set by lavc (before get_buffer() call))\
479
     */\
480
    int reference;\
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\
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    /**\
483
     * QP table\
484
     * - encoding: unused\
485
     * - decoding: set by lavc\
486
     */\
487
    int8_t *qscale_table;\
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    /**\
489
     * QP store stride\
490
     * - encoding: unused\
491
     * - decoding: set by lavc\
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     */\
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    int qstride;\
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\
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    /**\
496
     * mbskip_table[mb]>=1 if MB didnt change\
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     * stride= mb_width = (width+15)>>4\
498
     * - encoding: unused\
499
     * - decoding: set by lavc\
500
     */\
501
    uint8_t *mbskip_table;\
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\
503
    /**\
504
     * Motion vector table.\
505
     * @code\
506
     * example:\
507
     * int mv_sample_log2= 4 - motion_subsample_log2;\
508
     * int mb_width= (width+15)>>4;\
509
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
510
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
511
     * @endcode\
512
     * - encoding: set by user\
513
     * - decoding: set by lavc\
514
     */\
515
    int16_t (*motion_val[2])[2];\
516
\
517
    /**\
518
     * Macroblock type table\
519
     * mb_type_base + mb_width + 2\
520
     * - encoding: set by user\
521
     * - decoding: set by lavc\
522
     */\
523
    uint32_t *mb_type;\
524
\
525
    /**\
526
     * log2 of the size of the block which a single vector in motion_val represents: \
527
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
528
     * - encoding: unused\
529
     * - decoding: set by lavc\
530
     */\
531
    uint8_t motion_subsample_log2;\
532
\
533
    /**\
534
     * for some private data of the user\
535
     * - encoding: unused\
536
     * - decoding: set by user\
537
     */\
538
    void *opaque;\
539
\
540
    /**\
541
     * error\
542
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
543
     * - decoding: unused\
544
     */\
545
    uint64_t error[4];\
546
\
547
    /**\
548
     * type of the buffer (to keep track of who has to dealloc data[*])\
549
     * - encoding: set by the one who allocs it\
550
     * - decoding: set by the one who allocs it\
551
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
552
     */\
553
    int type;\
554
    \
555
    /**\
556
     * when decoding, this signal how much the picture must be delayed.\
557
     * extra_delay = repeat_pict / (2*fps)\
558
     * - encoding: unused\
559
     * - decoding: set by lavc\
560
     */\
561
    int repeat_pict;\
562
    \
563
    /**\
564
     * \
565
     */\
566
    int qscale_type;\
567
    \
568
    /**\
569
     * The content of the picture is interlaced.\
570
     * - encoding: set by user\
571
     * - decoding: set by lavc (default 0)\
572
     */\
573
    int interlaced_frame;\
574
    \
575
    /**\
576
     * if the content is interlaced, is top field displayed first.\
577
     * - encoding: set by user\
578
     * - decoding: set by lavc\
579
     */\
580
    int top_field_first;\
581
    \
582
    /**\
583
     * Pan scan.\
584
     * - encoding: set by user\
585
     * - decoding: set by lavc\
586
     */\
587
    AVPanScan *pan_scan;\
588
    \
589
    /**\
590
     * tell user application that palette has changed from previous frame.\
591
     * - encoding: ??? (no palette-enabled encoder yet)\
592
     * - decoding: set by lavc (default 0)\
593
     */\
594
    int palette_has_changed;\
595
    \
596
    /**\
597
     * Codec suggestion on buffer type if != 0\
598
     * - encoding: unused\
599
     * - decoding: set by lavc (before get_buffer() call))\
600
     */\
601
    int buffer_hints;\
602
\
603
    /**\
604
     * DCT coeffitients\
605
     * - encoding: unused\
606
     * - decoding: set by lavc\
607
     */\
608
    short *dct_coeff;\
609
\
610
    /**\
611
     * Motion referece frame index\
612
     * - encoding: set by user\
613
     * - decoding: set by lavc\
614
     */\
615
    int8_t *ref_index[2];
616

    
617
#define FF_QSCALE_TYPE_MPEG1        0
618
#define FF_QSCALE_TYPE_MPEG2        1
619

    
620
#define FF_BUFFER_TYPE_INTERNAL 1
621
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
622
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
623
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
624

    
625

    
626
#define FF_I_TYPE 1 // Intra
627
#define FF_P_TYPE 2 // Predicted
628
#define FF_B_TYPE 3 // Bi-dir predicted
629
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
630
#define FF_SI_TYPE 5
631
#define FF_SP_TYPE 6
632

    
633
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
634
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
635
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
636
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
637

    
638
/**
639
 * Audio Video Frame.
640
 */
641
typedef struct AVFrame {
642
    FF_COMMON_FRAME
643
} AVFrame;
644

    
645
#define DEFAULT_FRAME_RATE_BASE 1001000
646

    
647
/**
648
 * Used by av_log
649
 */
650
typedef struct AVCLASS AVClass;
651
struct AVCLASS {
652
    const char* class_name;
653
    const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
654
                                        or AVFormatContext, which begin with an AVClass.
655
                                        Needed because av_log is in libavcodec and has no visibility
656
                                        of AVIn/OutputFormat */
657
};
658

    
659
/**
660
 * main external api structure.
661
 */
662
typedef struct AVCodecContext {
663
    /**
664
     * Info on struct for av_log
665
     * - set by avcodec_alloc_context
666
     */
667
    AVClass *av_class;
668
    /**
669
     * the average bitrate.
670
     * - encoding: set by user. unused for constant quantizer encoding
671
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
672
     */
673
    int bit_rate;
674

    
675
    /**
676
     * number of bits the bitstream is allowed to diverge from the reference.
677
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
678
     * - encoding: set by user. unused for constant quantizer encoding
679
     * - decoding: unused
680
     */
681
    int bit_rate_tolerance; 
682

    
683
    /**
684
     * CODEC_FLAG_*.
685
     * - encoding: set by user.
686
     * - decoding: set by user.
687
     */
688
    int flags;
689

    
690
    /**
691
     * some codecs needs additionnal format info. It is stored here
692
     * - encoding: set by user. 
693
     * - decoding: set by lavc. (FIXME is this ok?)
694
     */
695
    int sub_id;
696

    
697
    /**
698
     * motion estimation algorithm used for video coding.
699
     * - encoding: MUST be set by user.
700
     * - decoding: unused
701
     */
702
    int me_method;
703

    
704
    /**
705
     * some codecs need / can use extra-data like huffman tables.
706
     * mjpeg: huffman tables
707
     * rv10: additional flags
708
     * mpeg4: global headers (they can be in the bitstream or here)
709
     * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
710
     * then extradata_size to avoid prolems if its read with the bitstream reader
711
     * - encoding: set/allocated/freed by lavc.
712
     * - decoding: set/allocated/freed by user.
713
     */
714
    void *extradata;
715
    int extradata_size;
716
    
717
    /* video only */
718
    /**
719
     * frames per sec multiplied by frame_rate_base.
720
     * for variable fps this is the precission, so if the timestamps 
721
     * can be specified in msec precssion then this is 1000*frame_rate_base
722
     * - encoding: MUST be set by user
723
     * - decoding: set by lavc. 0 or the frame_rate if available
724
     */
725
    int frame_rate;
726
    
727
    /**
728
     * picture width / height.
729
     * - encoding: MUST be set by user. 
730
     * - decoding: set by lavc.
731
     * Note, for compatibility its possible to set this instead of 
732
     * coded_width/height before decoding
733
     */
734
    int width, height;
735
    
736
#define FF_ASPECT_EXTENDED 15
737

    
738
    /**
739
     * the number of pictures in a group of pitures, or 0 for intra_only.
740
     * - encoding: set by user.
741
     * - decoding: unused
742
     */
743
    int gop_size;
744

    
745
    /**
746
     * pixel format, see PIX_FMT_xxx.
747
     * - encoding: set by user.
748
     * - decoding: set by lavc.
749
     */
750
    enum PixelFormat pix_fmt;
751
 
752
    /**
753
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
754
     * has to read frames at native frame rate.
755
     * - encoding: set by user.
756
     * - decoding: unused.
757
     */
758
    int rate_emu;
759
       
760
    /**
761
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
762
     * decoder to draw an horizontal band. It improve cache usage. Not
763
     * all codecs can do that. You must check the codec capabilities
764
     * before
765
     * - encoding: unused
766
     * - decoding: set by user.
767
     * @param height the height of the slice
768
     * @param y the y position of the slice
769
     * @param type 1->top field, 2->bottom field, 3->frame
770
     * @param offset offset into the AVFrame.data from which the slice should be read
771
     */
772
    void (*draw_horiz_band)(struct AVCodecContext *s,
773
                            const AVFrame *src, int offset[4],
774
                            int y, int type, int height);
775

    
776
    /* audio only */
777
    int sample_rate; ///< samples per sec 
778
    int channels;
779

    
780
    /**
781
     * audio sample format.
782
     * - encoding: set by user.
783
     * - decoding: set by lavc.
784
     */
785
    enum SampleFormat sample_fmt;  ///< sample format, currenly unused 
786

    
787
    /* the following data should not be initialized */
788
    int frame_size;     ///< in samples, initialized when calling 'init' 
789
    int frame_number;   ///< audio or video frame number 
790
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
791
    
792
    /**
793
     * number of frames the decoded output will be delayed relative to 
794
     * the encoded input.
795
     * - encoding: set by lavc.
796
     * - decoding: unused
797
     */
798
    int delay;
799
    
800
    /* - encoding parameters */
801
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
802
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
803
    
804
    /**
805
     * minimum quantizer.
806
     * - encoding: set by user.
807
     * - decoding: unused
808
     */
809
    int qmin;
810

    
811
    /**
812
     * maximum quantizer.
813
     * - encoding: set by user.
814
     * - decoding: unused
815
     */
816
    int qmax;
817

    
818
    /**
819
     * maximum quantizer difference etween frames.
820
     * - encoding: set by user.
821
     * - decoding: unused
822
     */
823
    int max_qdiff;
824

    
825
    /**
826
     * maximum number of b frames between non b frames.
827
     * note: the output will be delayed by max_b_frames+1 relative to the input
828
     * - encoding: set by user.
829
     * - decoding: unused
830
     */
831
    int max_b_frames;
832

    
833
    /**
834
     * qscale factor between ip and b frames.
835
     * - encoding: set by user.
836
     * - decoding: unused
837
     */
838
    float b_quant_factor;
839
    
840
    /** obsolete FIXME remove */
841
    int rc_strategy;
842
    int b_frame_strategy;
843

    
844
    /**
845
     * hurry up amount.
846
     * - encoding: unused
847
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
848
     */
849
    int hurry_up;
850
    
851
    struct AVCodec *codec;
852
    
853
    void *priv_data;
854

    
855
    /* unused, FIXME remove*/
856
    int rtp_mode;
857
    
858
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
859
                            /* do it's best to deliver a chunk with size    */
860
                            /* below rtp_payload_size, the chunk will start */
861
                            /* with a start code on some codecs like H.263  */
862
                            /* This doesn't take account of any particular  */
863
                            /* headers inside the transmited RTP payload    */
864

    
865
    
866
    /* The RTP callcack: This function is called  */
867
    /* every time the encoder as a packet to send */
868
    /* Depends on the encoder if the data starts  */
869
    /* with a Start Code (it should) H.263 does.  */
870
    /* mb_nb contains the number of macroblocks   */
871
    /* encoded in the RTP payload                 */
872
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb); 
873

    
874
    /* statistics, used for 2-pass encoding */
875
    int mv_bits;
876
    int header_bits;
877
    int i_tex_bits;
878
    int p_tex_bits;
879
    int i_count;
880
    int p_count;
881
    int skip_count;
882
    int misc_bits;
883
    
884
    /**
885
     * number of bits used for the previously encoded frame.
886
     * - encoding: set by lavc
887
     * - decoding: unused
888
     */
889
    int frame_bits;
890

    
891
    /**
892
     * private data of the user, can be used to carry app specific stuff.
893
     * - encoding: set by user
894
     * - decoding: set by user
895
     */
896
    void *opaque;
897

    
898
    char codec_name[32];
899
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
900
    enum CodecID codec_id; /* see CODEC_ID_xxx */
901
    
902
    /**
903
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
904
     * this is used to workaround some encoder bugs
905
     * - encoding: set by user, if not then the default based on codec_id will be used
906
     * - decoding: set by user, will be converted to upper case by lavc during init
907
     */
908
    unsigned int codec_tag;
909
    
910
    /**
911
     * workaround bugs in encoders which sometimes cannot be detected automatically.
912
     * - encoding: unused
913
     * - decoding: set by user
914
     */
915
    int workaround_bugs;
916
#define FF_BUG_AUTODETECT       1  ///< autodetection
917
#define FF_BUG_OLD_MSMPEG4      2
918
#define FF_BUG_XVID_ILACE       4
919
#define FF_BUG_UMP4             8
920
#define FF_BUG_NO_PADDING       16
921
#define FF_BUG_AMV              32
922
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
923
#define FF_BUG_QPEL_CHROMA      64
924
#define FF_BUG_STD_QPEL         128
925
#define FF_BUG_QPEL_CHROMA2     256
926
#define FF_BUG_DIRECT_BLOCKSIZE 512
927
#define FF_BUG_EDGE             1024
928
#define FF_BUG_HPEL_CHROMA      2048
929
#define FF_BUG_DC_CLIP          4096
930
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
931
        
932
    /**
933
     * luma single coeff elimination threshold.
934
     * - encoding: set by user
935
     * - decoding: unused
936
     */
937
    int luma_elim_threshold;
938
    
939
    /**
940
     * chroma single coeff elimination threshold.
941
     * - encoding: set by user
942
     * - decoding: unused
943
     */
944
    int chroma_elim_threshold;
945
    
946
    /**
947
     * strictly follow the std (MPEG4, ...).
948
     * - encoding: set by user
949
     * - decoding: unused
950
     */
951
    int strict_std_compliance;
952
    
953
    /**
954
     * qscale offset between ip and b frames.
955
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
956
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
957
     * - encoding: set by user.
958
     * - decoding: unused
959
     */
960
    float b_quant_offset;
961
    
962
    /**
963
     * error resilience higher values will detect more errors but may missdetect
964
     * some more or less valid parts as errors.
965
     * - encoding: unused
966
     * - decoding: set by user
967
     */
968
    int error_resilience;
969
#define FF_ER_CAREFULL        1
970
#define FF_ER_COMPLIANT       2
971
#define FF_ER_AGGRESSIVE      3
972
#define FF_ER_VERY_AGGRESSIVE 4
973
    
974
    /**
975
     * called at the beginning of each frame to get a buffer for it.
976
     * if pic.reference is set then the frame will be read later by lavc
977
     * avcodec_align_dimensions() should be used to find the required width and
978
     * height, as they normally need to be rounded up to the next multiple of 16
979
     * - encoding: unused
980
     * - decoding: set by lavc, user can override
981
     */
982
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
983
    
984
    /**
985
     * called to release buffers which where allocated with get_buffer.
986
     * a released buffer can be reused in get_buffer()
987
     * pic.data[*] must be set to NULL
988
     * - encoding: unused
989
     * - decoding: set by lavc, user can override
990
     */
991
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
992

    
993
    /**
994
     * if 1 the stream has a 1 frame delay during decoding.
995
     * - encoding: set by lavc
996
     * - decoding: set by lavc
997
     */
998
    int has_b_frames;
999
    
1000
    int block_align; ///< used by some WAV based audio codecs
1001
    
1002
    int parse_only; /* - decoding only: if true, only parsing is done
1003
                       (function avcodec_parse_frame()). The frame
1004
                       data is returned. Only MPEG codecs support this now. */
1005
    
1006
    /**
1007
     * 0-> h263 quant 1-> mpeg quant.
1008
     * - encoding: set by user.
1009
     * - decoding: unused
1010
     */
1011
    int mpeg_quant;
1012
    
1013
    /**
1014
     * pass1 encoding statistics output buffer.
1015
     * - encoding: set by lavc
1016
     * - decoding: unused
1017
     */
1018
    char *stats_out;
1019
    
1020
    /**
1021
     * pass2 encoding statistics input buffer.
1022
     * concatenated stuff from stats_out of pass1 should be placed here
1023
     * - encoding: allocated/set/freed by user
1024
     * - decoding: unused
1025
     */
1026
    char *stats_in;
1027
    
1028
    /**
1029
     * ratecontrol qmin qmax limiting method.
1030
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1031
     * - encoding: set by user.
1032
     * - decoding: unused
1033
     */
1034
    float rc_qsquish;
1035

    
1036
    float rc_qmod_amp;
1037
    int rc_qmod_freq;
1038
    
1039
    /**
1040
     * ratecontrol override, see RcOverride.
1041
     * - encoding: allocated/set/freed by user.
1042
     * - decoding: unused
1043
     */
1044
    RcOverride *rc_override;
1045
    int rc_override_count;
1046
    
1047
    /**
1048
     * rate control equation.
1049
     * - encoding: set by user
1050
     * - decoding: unused
1051
     */
1052
    char *rc_eq;
1053
    
1054
    /**
1055
     * maximum bitrate.
1056
     * - encoding: set by user.
1057
     * - decoding: unused
1058
     */
1059
    int rc_max_rate;
1060
    
1061
    /**
1062
     * minimum bitrate.
1063
     * - encoding: set by user.
1064
     * - decoding: unused
1065
     */
1066
    int rc_min_rate;
1067
    
1068
    /**
1069
     * decoder bitstream buffer size.
1070
     * - encoding: set by user.
1071
     * - decoding: unused
1072
     */
1073
    int rc_buffer_size;
1074
    float rc_buffer_aggressivity;
1075

    
1076
    /**
1077
     * qscale factor between p and i frames.
1078
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1079
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1080
     * - encoding: set by user.
1081
     * - decoding: unused
1082
     */
1083
    float i_quant_factor;
1084
    
1085
    /**
1086
     * qscale offset between p and i frames.
1087
     * - encoding: set by user.
1088
     * - decoding: unused
1089
     */
1090
    float i_quant_offset;
1091
    
1092
    /**
1093
     * initial complexity for pass1 ratecontrol.
1094
     * - encoding: set by user.
1095
     * - decoding: unused
1096
     */
1097
    float rc_initial_cplx;
1098

    
1099
    /**
1100
     * dct algorithm, see FF_DCT_* below.
1101
     * - encoding: set by user
1102
     * - decoding: unused
1103
     */
1104
    int dct_algo;
1105
#define FF_DCT_AUTO    0
1106
#define FF_DCT_FASTINT 1
1107
#define FF_DCT_INT     2
1108
#define FF_DCT_MMX     3
1109
#define FF_DCT_MLIB    4
1110
#define FF_DCT_ALTIVEC 5
1111
#define FF_DCT_FAAN    6
1112
    
1113
    /**
1114
     * luminance masking (0-> disabled).
1115
     * - encoding: set by user
1116
     * - decoding: unused
1117
     */
1118
    float lumi_masking;
1119
    
1120
    /**
1121
     * temporary complexity masking (0-> disabled).
1122
     * - encoding: set by user
1123
     * - decoding: unused
1124
     */
1125
    float temporal_cplx_masking;
1126
    
1127
    /**
1128
     * spatial complexity masking (0-> disabled).
1129
     * - encoding: set by user
1130
     * - decoding: unused
1131
     */
1132
    float spatial_cplx_masking;
1133
    
1134
    /**
1135
     * p block masking (0-> disabled).
1136
     * - encoding: set by user
1137
     * - decoding: unused
1138
     */
1139
    float p_masking;
1140

    
1141
    /**
1142
     * darkness masking (0-> disabled).
1143
     * - encoding: set by user
1144
     * - decoding: unused
1145
     */
1146
    float dark_masking;
1147
    
1148
    
1149
    /* for binary compatibility */
1150
    int unused;
1151
    
1152
    /**
1153
     * idct algorithm, see FF_IDCT_* below.
1154
     * - encoding: set by user
1155
     * - decoding: set by user
1156
     */
1157
    int idct_algo;
1158
#define FF_IDCT_AUTO         0
1159
#define FF_IDCT_INT          1
1160
#define FF_IDCT_SIMPLE       2
1161
#define FF_IDCT_SIMPLEMMX    3
1162
#define FF_IDCT_LIBMPEG2MMX  4
1163
#define FF_IDCT_PS2          5
1164
#define FF_IDCT_MLIB         6
1165
#define FF_IDCT_ARM          7
1166
#define FF_IDCT_ALTIVEC      8
1167
#define FF_IDCT_SH4          9
1168
#define FF_IDCT_SIMPLEARM    10
1169
#define FF_IDCT_H264         11
1170

    
1171
    /**
1172
     * slice count.
1173
     * - encoding: set by lavc
1174
     * - decoding: set by user (or 0)
1175
     */
1176
    int slice_count;
1177
    /**
1178
     * slice offsets in the frame in bytes.
1179
     * - encoding: set/allocated by lavc
1180
     * - decoding: set/allocated by user (or NULL)
1181
     */
1182
    int *slice_offset;
1183

    
1184
    /**
1185
     * error concealment flags.
1186
     * - encoding: unused
1187
     * - decoding: set by user
1188
     */
1189
    int error_concealment;
1190
#define FF_EC_GUESS_MVS   1
1191
#define FF_EC_DEBLOCK     2
1192

    
1193
    /**
1194
     * dsp_mask could be add used to disable unwanted CPU features
1195
     * CPU features (i.e. MMX, SSE. ...)
1196
     *
1197
     * with FORCE flag you may instead enable given CPU features
1198
     * (Dangerous: usable in case of misdetection, improper usage however will
1199
     * result into program crash)
1200
     */
1201
    unsigned dsp_mask;
1202
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1203
    /* lower 16 bits - CPU features */
1204
#ifdef HAVE_MMX
1205
#define FF_MM_MMX        0x0001 /* standard MMX */
1206
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1207
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1208
#define FF_MM_SSE        0x0008 /* SSE functions */
1209
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1210
#define FF_MM_3DNOWEXT        0x0020 /* AMD 3DNowExt */
1211
#endif /* HAVE_MMX */
1212

    
1213
    /**
1214
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1215
     * - encoding: set by lavc
1216
     * - decoding: set by user
1217
     */
1218
     int bits_per_sample;
1219
    
1220
    /**
1221
     * prediction method (needed for huffyuv).
1222
     * - encoding: set by user
1223
     * - decoding: unused
1224
     */
1225
     int prediction_method;
1226
#define FF_PRED_LEFT   0
1227
#define FF_PRED_PLANE  1
1228
#define FF_PRED_MEDIAN 2
1229
    
1230
    /**
1231
     * sample aspect ratio (0 if unknown).
1232
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1233
     * - encoding: set by user.
1234
     * - decoding: set by lavc.
1235
     */
1236
    AVRational sample_aspect_ratio;
1237

    
1238
    /**
1239
     * the picture in the bitstream.
1240
     * - encoding: set by lavc
1241
     * - decoding: set by lavc
1242
     */
1243
    AVFrame *coded_frame;
1244

    
1245
    /**
1246
     * debug.
1247
     * - encoding: set by user.
1248
     * - decoding: set by user.
1249
     */
1250
    int debug;
1251
#define FF_DEBUG_PICT_INFO 1
1252
#define FF_DEBUG_RC        2
1253
#define FF_DEBUG_BITSTREAM 4
1254
#define FF_DEBUG_MB_TYPE   8
1255
#define FF_DEBUG_QP        16
1256
#define FF_DEBUG_MV        32
1257
#define FF_DEBUG_DCT_COEFF 0x00000040
1258
#define FF_DEBUG_SKIP      0x00000080
1259
#define FF_DEBUG_STARTCODE 0x00000100
1260
#define FF_DEBUG_PTS       0x00000200
1261
#define FF_DEBUG_ER        0x00000400
1262
#define FF_DEBUG_MMCO      0x00000800
1263
#define FF_DEBUG_BUGS      0x00001000
1264
#define FF_DEBUG_VIS_QP    0x00002000
1265
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1266
    
1267
    /**
1268
     * debug.
1269
     * - encoding: set by user.
1270
     * - decoding: set by user.
1271
     */
1272
    int debug_mv;
1273
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1274
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1275
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1276

    
1277
    /**
1278
     * error.
1279
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1280
     * - decoding: unused
1281
     */
1282
    uint64_t error[4];
1283
    
1284
    /**
1285
     * minimum MB quantizer.
1286
     * - encoding: unused
1287
     * - decoding: unused
1288
     */
1289
    int mb_qmin;
1290

    
1291
    /**
1292
     * maximum MB quantizer.
1293
     * - encoding: unused
1294
     * - decoding: unused
1295
     */
1296
    int mb_qmax;
1297
    
1298
    /**
1299
     * motion estimation compare function.
1300
     * - encoding: set by user.
1301
     * - decoding: unused
1302
     */
1303
    int me_cmp;
1304
    /**
1305
     * subpixel motion estimation compare function.
1306
     * - encoding: set by user.
1307
     * - decoding: unused
1308
     */
1309
    int me_sub_cmp;
1310
    /**
1311
     * macroblock compare function (not supported yet).
1312
     * - encoding: set by user.
1313
     * - decoding: unused
1314
     */
1315
    int mb_cmp;
1316
    /**
1317
     * interlaced dct compare function
1318
     * - encoding: set by user.
1319
     * - decoding: unused
1320
     */
1321
    int ildct_cmp;
1322
#define FF_CMP_SAD  0
1323
#define FF_CMP_SSE  1
1324
#define FF_CMP_SATD 2
1325
#define FF_CMP_DCT  3
1326
#define FF_CMP_PSNR 4
1327
#define FF_CMP_BIT  5
1328
#define FF_CMP_RD   6
1329
#define FF_CMP_ZERO 7
1330
#define FF_CMP_VSAD 8
1331
#define FF_CMP_VSSE 9
1332
#define FF_CMP_NSSE 10
1333
#define FF_CMP_W53  11
1334
#define FF_CMP_W97  12
1335
#define FF_CMP_DCTMAX 13
1336
#define FF_CMP_CHROMA 256
1337
    
1338
    /**
1339
     * ME diamond size & shape.
1340
     * - encoding: set by user.
1341
     * - decoding: unused
1342
     */
1343
    int dia_size;
1344

    
1345
    /**
1346
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1347
     * - encoding: set by user.
1348
     * - decoding: unused
1349
     */
1350
    int last_predictor_count;
1351

    
1352
    /**
1353
     * pre pass for motion estimation.
1354
     * - encoding: set by user.
1355
     * - decoding: unused
1356
     */
1357
    int pre_me;
1358

    
1359
    /**
1360
     * motion estimation pre pass compare function.
1361
     * - encoding: set by user.
1362
     * - decoding: unused
1363
     */
1364
    int me_pre_cmp;
1365

    
1366
    /**
1367
     * ME pre pass diamond size & shape.
1368
     * - encoding: set by user.
1369
     * - decoding: unused
1370
     */
1371
    int pre_dia_size;
1372

    
1373
    /**
1374
     * subpel ME quality.
1375
     * - encoding: set by user.
1376
     * - decoding: unused
1377
     */
1378
    int me_subpel_quality;
1379

    
1380
    /**
1381
     * callback to negotiate the pixelFormat.
1382
     * @param fmt is the list of formats which are supported by the codec,
1383
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1384
     * the first is allways the native one
1385
     * @return the choosen format
1386
     * - encoding: unused
1387
     * - decoding: set by user, if not set then the native format will always be choosen
1388
     */
1389
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1390

    
1391
    /**
1392
     * DTG active format information (additionnal aspect ratio
1393
     * information only used in DVB MPEG2 transport streams). 0 if
1394
     * not set.
1395
     * 
1396
     * - encoding: unused.
1397
     * - decoding: set by decoder 
1398
     */
1399
    int dtg_active_format;
1400
#define FF_DTG_AFD_SAME         8
1401
#define FF_DTG_AFD_4_3          9
1402
#define FF_DTG_AFD_16_9         10
1403
#define FF_DTG_AFD_14_9         11
1404
#define FF_DTG_AFD_4_3_SP_14_9  13
1405
#define FF_DTG_AFD_16_9_SP_14_9 14
1406
#define FF_DTG_AFD_SP_4_3       15
1407

    
1408
    /**
1409
     * Maximum motion estimation search range in subpel units.
1410
     * if 0 then no limit
1411
     * 
1412
     * - encoding: set by user.
1413
     * - decoding: unused.
1414
     */
1415
    int me_range;
1416

    
1417
    /**
1418
     * frame_rate_base.
1419
     * for variable fps this is 1
1420
     * - encoding: set by user.
1421
     * - decoding: set by lavc.
1422
     * @todo move this after frame_rate
1423
     */
1424

    
1425
    int frame_rate_base;
1426
    /**
1427
     * intra quantizer bias.
1428
     * - encoding: set by user.
1429
     * - decoding: unused
1430
     */
1431
    int intra_quant_bias;
1432
#define FF_DEFAULT_QUANT_BIAS 999999
1433
    
1434
    /**
1435
     * inter quantizer bias.
1436
     * - encoding: set by user.
1437
     * - decoding: unused
1438
     */
1439
    int inter_quant_bias;
1440

    
1441
    /**
1442
     * color table ID.
1443
     * - encoding: unused.
1444
     * - decoding: which clrtable should be used for 8bit RGB images
1445
     *             table have to be stored somewhere FIXME
1446
     */
1447
    int color_table_id;
1448
    
1449
    /**
1450
     * internal_buffer count. 
1451
     * Dont touch, used by lavc default_get_buffer()
1452
     */
1453
    int internal_buffer_count;
1454
    
1455
    /**
1456
     * internal_buffers. 
1457
     * Dont touch, used by lavc default_get_buffer()
1458
     */
1459
    void *internal_buffer;
1460

    
1461
#define FF_LAMBDA_SHIFT 7
1462
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1463
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1464
#define FF_LAMBDA_MAX (256*128-1)
1465

    
1466
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1467
    /**
1468
     * global quality for codecs which cannot change it per frame.
1469
     * this should be proportional to MPEG1/2/4 qscale.
1470
     * - encoding: set by user.
1471
     * - decoding: unused
1472
     */
1473
    int global_quality;
1474
    
1475
#define FF_CODER_TYPE_VLC   0
1476
#define FF_CODER_TYPE_AC    1
1477
    /**
1478
     * coder type
1479
     * - encoding: set by user.
1480
     * - decoding: unused
1481
     */
1482
    int coder_type;
1483

    
1484
    /**
1485
     * context model
1486
     * - encoding: set by user.
1487
     * - decoding: unused
1488
     */
1489
    int context_model;
1490
    
1491
    /**
1492
     * slice flags
1493
     * - encoding: unused
1494
     * - decoding: set by user.
1495
     */
1496
    int slice_flags;
1497
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1498
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1499
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1500

    
1501
    /**
1502
     * XVideo Motion Acceleration
1503
     * - encoding: forbidden
1504
     * - decoding: set by decoder
1505
     */
1506
    int xvmc_acceleration;
1507
    
1508
    /**
1509
     * macroblock decision mode
1510
     * - encoding: set by user.
1511
     * - decoding: unused
1512
     */
1513
    int mb_decision;
1514
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1515
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1516
#define FF_MB_DECISION_RD     2        ///< rate distoration
1517

    
1518
    /**
1519
     * custom intra quantization matrix
1520
     * - encoding: set by user, can be NULL
1521
     * - decoding: set by lavc
1522
     */
1523
    uint16_t *intra_matrix;
1524

    
1525
    /**
1526
     * custom inter quantization matrix
1527
     * - encoding: set by user, can be NULL
1528
     * - decoding: set by lavc
1529
     */
1530
    uint16_t *inter_matrix;
1531
    
1532
    /**
1533
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1534
     * this is used to workaround some encoder bugs
1535
     * - encoding: unused
1536
     * - decoding: set by user, will be converted to upper case by lavc during init
1537
     */
1538
    unsigned int stream_codec_tag;
1539

    
1540
    /**
1541
     * scene change detection threshold.
1542
     * 0 is default, larger means fewer detected scene changes
1543
     * - encoding: set by user.
1544
     * - decoding: unused
1545
     */
1546
    int scenechange_threshold;
1547

    
1548
    /**
1549
     * minimum lagrange multipler
1550
     * - encoding: set by user.
1551
     * - decoding: unused
1552
     */
1553
    int lmin;
1554

    
1555
    /**
1556
     * maximum lagrange multipler
1557
     * - encoding: set by user.
1558
     * - decoding: unused
1559
     */
1560
    int lmax;
1561

    
1562
    /**
1563
     * Palette control structure
1564
     * - encoding: ??? (no palette-enabled encoder yet)
1565
     * - decoding: set by user.
1566
     */
1567
    struct AVPaletteControl *palctrl;
1568

    
1569
    /**
1570
     * noise reduction strength
1571
     * - encoding: set by user.
1572
     * - decoding: unused
1573
     */
1574
    int noise_reduction;
1575
    
1576
    /**
1577
     * called at the beginning of a frame to get cr buffer for it.
1578
     * buffer type (size, hints) must be the same. lavc won't check it.
1579
     * lavc will pass previous buffer in pic, function should return
1580
     * same buffer or new buffer with old frame "painted" into it.
1581
     * if pic.data[0] == NULL must behave like get_buffer().
1582
     * - encoding: unused
1583
     * - decoding: set by lavc, user can override
1584
     */
1585
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1586

    
1587
    /**
1588
     * number of bits which should be loaded into the rc buffer before decoding starts
1589
     * - encoding: set by user.
1590
     * - decoding: unused
1591
     */
1592
    int rc_initial_buffer_occupancy;
1593

    
1594
    /**
1595
     *
1596
     * - encoding: set by user.
1597
     * - decoding: unused
1598
     */
1599
    int inter_threshold;
1600

    
1601
    /**
1602
     * CODEC_FLAG2_*.
1603
     * - encoding: set by user.
1604
     * - decoding: set by user.
1605
     */
1606
    int flags2;
1607

    
1608
    /**
1609
     * simulates errors in the bitstream to test error concealment.
1610
     * - encoding: set by user.
1611
     * - decoding: unused.
1612
     */
1613
    int error_rate;
1614
    
1615
    /**
1616
     * MP3 antialias algorithm, see FF_AA_* below.
1617
     * - encoding: unused
1618
     * - decoding: set by user
1619
     */
1620
    int antialias_algo;
1621
#define FF_AA_AUTO    0
1622
#define FF_AA_FASTINT 1 //not implemented yet
1623
#define FF_AA_INT     2
1624
#define FF_AA_FLOAT   3
1625
    /**
1626
     * Quantizer noise shaping.
1627
     * - encoding: set by user
1628
     * - decoding: unused
1629
     */
1630
    int quantizer_noise_shaping;
1631

    
1632
    /**
1633
     * Thread count.
1634
     * is used to decide how many independant tasks should be passed to execute()
1635
     * - encoding: set by user
1636
     * - decoding: set by user
1637
     */
1638
    int thread_count;
1639
    
1640
    /**
1641
     * the codec may call this to execute several independant things. it will return only after
1642
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1643
     * default implementation will execute the parts serially
1644
     * @param count the number of things to execute
1645
     * - encoding: set by lavc, user can override
1646
     * - decoding: set by lavc, user can override
1647
     */
1648
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1649
    
1650
    /**
1651
     * Thread opaque.
1652
     * can be used by execute() to store some per AVCodecContext stuff.
1653
     * - encoding: set by execute()
1654
     * - decoding: set by execute()
1655
     */
1656
    void *thread_opaque;
1657

    
1658
    /**
1659
     * Motion estimation threshold. under which no motion estimation is 
1660
     * performed, but instead the user specified motion vectors are used
1661
     * 
1662
     * - encoding: set by user
1663
     * - decoding: unused
1664
     */
1665
     int me_threshold;
1666

    
1667
    /**
1668
     * Macroblock threshold. under which the user specified macroblock types will be used
1669
     * - encoding: set by user
1670
     * - decoding: unused
1671
     */
1672
     int mb_threshold;
1673

    
1674
    /**
1675
     * precision of the intra dc coefficient - 8.
1676
     * - encoding: set by user
1677
     * - decoding: unused
1678
     */
1679
     int intra_dc_precision;
1680

    
1681
    /**
1682
     * noise vs. sse weight for the nsse comparsion function.
1683
     * - encoding: set by user
1684
     * - decoding: unused
1685
     */
1686
     int nsse_weight;
1687

    
1688
    /**
1689
     * number of macroblock rows at the top which are skiped.
1690
     * - encoding: unused
1691
     * - decoding: set by user
1692
     */
1693
     int skip_top;
1694

    
1695
    /**
1696
     * number of macroblock rows at the bottom which are skiped.
1697
     * - encoding: unused
1698
     * - decoding: set by user
1699
     */
1700
     int skip_bottom;
1701

    
1702
    /**
1703
     * profile
1704
     * - encoding: set by user
1705
     * - decoding: set by lavc
1706
     */
1707
     int profile;
1708
#define FF_PROFILE_UNKNOWN -99
1709

    
1710
    /**
1711
     * level
1712
     * - encoding: set by user
1713
     * - decoding: set by lavc
1714
     */
1715
     int level;
1716
#define FF_LEVEL_UNKNOWN -99
1717

    
1718
    /**
1719
     * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1720
     * - encoding: unused
1721
     * - decoding: set by user
1722
     */
1723
     int lowres;
1724

    
1725
    /**
1726
     * bitsream width / height. may be different from width/height if lowres
1727
     * or other things are used
1728
     * - encoding: unused
1729
     * - decoding: set by user before init if known, codec should override / dynamically change if needed
1730
     */
1731
    int coded_width, coded_height;
1732

    
1733
    /**
1734
     * frame skip threshold
1735
     * - encoding: set by user
1736
     * - decoding: unused
1737
     */
1738
    int frame_skip_threshold;
1739

    
1740
    /**
1741
     * frame skip factor
1742
     * - encoding: set by user
1743
     * - decoding: unused
1744
     */
1745
    int frame_skip_factor;
1746

    
1747
    /**
1748
     * frame skip exponent
1749
     * - encoding: set by user
1750
     * - decoding: unused
1751
     */
1752
    int frame_skip_exp;
1753

    
1754
    /**
1755
     * frame skip comparission function
1756
     * - encoding: set by user.
1757
     * - decoding: unused
1758
     */
1759
    int frame_skip_cmp;
1760

    
1761
    /**
1762
     * border processing masking. raises the quantizer for mbs on the borders
1763
     * of the picture.
1764
     * - encoding: set by user
1765
     * - decoding: unused
1766
     */
1767
    float border_masking;
1768

    
1769
    /**
1770
     * minimum MB lagrange multipler.
1771
     * - encoding: set by user.
1772
     * - decoding: unused
1773
     */
1774
    int mb_lmin;
1775

    
1776
    /**
1777
     * maximum MB lagrange multipler.
1778
     * - encoding: set by user.
1779
     * - decoding: unused
1780
     */
1781
    int mb_lmax;
1782
} AVCodecContext;
1783

    
1784

    
1785
/**
1786
 * AVOption.
1787
 */
1788
typedef struct AVOption {
1789
    /** options' name */
1790
    const char *name; /* if name is NULL, it indicates a link to next */
1791
    /** short English text help or const struct AVOption* subpointer */
1792
    const char *help; //        const struct AVOption* sub;
1793
    /** offset to context structure where the parsed value should be stored */
1794
    int offset;
1795
    /** options' type */
1796
    int type;
1797
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1798
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1799
#define FF_OPT_TYPE_INT 3       ///< integer
1800
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1801
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1802
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1803
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1804
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1805
    /** min value  (min == max   ->  no limits) */
1806
    double min;
1807
    /** maximum value for double/int */
1808
    double max;
1809
    /** default boo [0,1]l/double/int value */
1810
    double defval;
1811
    /**
1812
     * default string value (with optional semicolon delimited extra option-list
1813
     * i.e.   option1;option2;option3
1814
     * defval might select other then first argument as default
1815
     */
1816
    const char *defstr;
1817
#define FF_OPT_MAX_DEPTH 10
1818
} AVOption;
1819

    
1820
/**
1821
 * Parse option(s) and sets fields in passed structure
1822
 * @param strct        structure where the parsed results will be written
1823
 * @param list  list with AVOptions
1824
 * @param opts        string with options for parsing
1825
 */
1826
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1827

    
1828

    
1829
/**
1830
 * AVCodec.
1831
 */
1832
typedef struct AVCodec {
1833
    const char *name;
1834
    enum CodecType type;
1835
    enum CodecID id;
1836
    int priv_data_size;
1837
    int (*init)(AVCodecContext *);
1838
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1839
    int (*close)(AVCodecContext *);
1840
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1841
                  uint8_t *buf, int buf_size);
1842
    int capabilities;
1843
    const AVOption *options;
1844
    struct AVCodec *next;
1845
    void (*flush)(AVCodecContext *);
1846
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1847
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1848
} AVCodec;
1849

    
1850
/**
1851
 * four components are given, that's all.
1852
 * the last component is alpha
1853
 */
1854
typedef struct AVPicture {
1855
    uint8_t *data[4];
1856
    int linesize[4];       ///< number of bytes per line
1857
} AVPicture;
1858

    
1859
/**
1860
 * AVPaletteControl
1861
 * This structure defines a method for communicating palette changes
1862
 * between and demuxer and a decoder.
1863
 */
1864
#define AVPALETTE_SIZE 1024
1865
#define AVPALETTE_COUNT 256
1866
typedef struct AVPaletteControl {
1867

    
1868
    /* demuxer sets this to 1 to indicate the palette has changed;
1869
     * decoder resets to 0 */
1870
    int palette_changed;
1871

    
1872
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1873
     * the individual palette components should be on a 8-bit scale; if
1874
     * the palette data comes from a IBM VGA native format, the component
1875
     * data is probably 6 bits in size and needs to be scaled */
1876
    unsigned int palette[AVPALETTE_COUNT];
1877

    
1878
} AVPaletteControl;
1879

    
1880
extern AVCodec ac3_encoder;
1881
extern AVCodec mp2_encoder;
1882
extern AVCodec mp3lame_encoder;
1883
extern AVCodec oggvorbis_encoder;
1884
extern AVCodec oggtheora_encoder;
1885
extern AVCodec faac_encoder;
1886
extern AVCodec xvid_encoder;
1887
extern AVCodec mpeg1video_encoder;
1888
extern AVCodec mpeg2video_encoder;
1889
extern AVCodec h261_encoder;
1890
extern AVCodec h263_encoder;
1891
extern AVCodec h263p_encoder;
1892
extern AVCodec flv_encoder;
1893
extern AVCodec rv10_encoder;
1894
extern AVCodec rv20_encoder;
1895
extern AVCodec dvvideo_encoder;
1896
extern AVCodec mjpeg_encoder;
1897
extern AVCodec ljpeg_encoder;
1898
extern AVCodec png_encoder;
1899
extern AVCodec ppm_encoder;
1900
extern AVCodec pgm_encoder;
1901
extern AVCodec pgmyuv_encoder;
1902
extern AVCodec pbm_encoder;
1903
extern AVCodec pam_encoder;
1904
extern AVCodec mpeg4_encoder;
1905
extern AVCodec msmpeg4v1_encoder;
1906
extern AVCodec msmpeg4v2_encoder;
1907
extern AVCodec msmpeg4v3_encoder;
1908
extern AVCodec wmv1_encoder;
1909
extern AVCodec wmv2_encoder;
1910
extern AVCodec huffyuv_encoder;
1911
extern AVCodec ffvhuff_encoder;
1912
extern AVCodec h264_encoder;
1913
extern AVCodec asv1_encoder;
1914
extern AVCodec asv2_encoder;
1915
extern AVCodec vcr1_encoder;
1916
extern AVCodec ffv1_encoder;
1917
extern AVCodec snow_encoder;
1918
extern AVCodec mdec_encoder;
1919
extern AVCodec zlib_encoder;
1920
extern AVCodec sonic_encoder;
1921
extern AVCodec sonic_ls_encoder;
1922
extern AVCodec svq1_encoder;
1923

    
1924
extern AVCodec h263_decoder;
1925
extern AVCodec h261_decoder;
1926
extern AVCodec mpeg4_decoder;
1927
extern AVCodec msmpeg4v1_decoder;
1928
extern AVCodec msmpeg4v2_decoder;
1929
extern AVCodec msmpeg4v3_decoder;
1930
extern AVCodec wmv1_decoder;
1931
extern AVCodec wmv2_decoder;
1932
extern AVCodec vc9_decoder;
1933
extern AVCodec wmv3_decoder;
1934
extern AVCodec mpeg1video_decoder;
1935
extern AVCodec mpeg2video_decoder;
1936
extern AVCodec mpegvideo_decoder;
1937
extern AVCodec mpeg_xvmc_decoder;
1938
extern AVCodec h263i_decoder;
1939
extern AVCodec flv_decoder;
1940
extern AVCodec rv10_decoder;
1941
extern AVCodec rv20_decoder;
1942
extern AVCodec rv30_decoder;
1943
extern AVCodec rv40_decoder;
1944
extern AVCodec svq1_decoder;
1945
extern AVCodec svq3_decoder;
1946
extern AVCodec dvvideo_decoder;
1947
extern AVCodec wmav1_decoder;
1948
extern AVCodec wmav2_decoder;
1949
extern AVCodec mjpeg_decoder;
1950
extern AVCodec mjpegb_decoder;
1951
extern AVCodec sp5x_decoder;
1952
extern AVCodec png_decoder;
1953
extern AVCodec mp2_decoder;
1954
extern AVCodec mp3_decoder;
1955
extern AVCodec mp3adu_decoder;
1956
extern AVCodec mp3on4_decoder;
1957
extern AVCodec mace3_decoder;
1958
extern AVCodec mace6_decoder;
1959
extern AVCodec huffyuv_decoder;
1960
extern AVCodec ffvhuff_decoder;
1961
extern AVCodec oggvorbis_decoder;
1962
extern AVCodec oggtheora_decoder;
1963
extern AVCodec cyuv_decoder;
1964
extern AVCodec h264_decoder;
1965
extern AVCodec indeo3_decoder;
1966
extern AVCodec vp3_decoder;
1967
extern AVCodec theora_decoder;
1968
extern AVCodec amr_nb_decoder;
1969
extern AVCodec amr_nb_encoder;
1970
extern AVCodec amr_wb_encoder;
1971
extern AVCodec amr_wb_decoder;
1972
extern AVCodec aac_decoder;
1973
extern AVCodec mpeg4aac_decoder;
1974
extern AVCodec asv1_decoder;
1975
extern AVCodec asv2_decoder;
1976
extern AVCodec vcr1_decoder;
1977
extern AVCodec cljr_decoder;
1978
extern AVCodec ffv1_decoder;
1979
extern AVCodec snow_decoder;
1980
extern AVCodec fourxm_decoder;
1981
extern AVCodec mdec_decoder;
1982
extern AVCodec roq_decoder;
1983
extern AVCodec interplay_video_decoder;
1984
extern AVCodec xan_wc3_decoder;
1985
extern AVCodec rpza_decoder;
1986
extern AVCodec cinepak_decoder;
1987
extern AVCodec msrle_decoder;
1988
extern AVCodec msvideo1_decoder;
1989
extern AVCodec vqa_decoder;
1990
extern AVCodec idcin_decoder;
1991
extern AVCodec eightbps_decoder;
1992
extern AVCodec smc_decoder;
1993
extern AVCodec flic_decoder;
1994
extern AVCodec vmdvideo_decoder;
1995
extern AVCodec vmdaudio_decoder;
1996
extern AVCodec truemotion1_decoder;
1997
extern AVCodec mszh_decoder;
1998
extern AVCodec zlib_decoder;
1999
extern AVCodec ra_144_decoder;
2000
extern AVCodec ra_288_decoder;
2001
extern AVCodec roq_dpcm_decoder;
2002
extern AVCodec interplay_dpcm_decoder;
2003
extern AVCodec xan_dpcm_decoder;
2004
extern AVCodec sol_dpcm_decoder;
2005
extern AVCodec sonic_decoder;
2006
extern AVCodec qtrle_decoder;
2007
extern AVCodec flac_decoder;
2008
extern AVCodec tscc_decoder;
2009
extern AVCodec ulti_decoder;
2010
extern AVCodec qdraw_decoder;
2011
extern AVCodec xl_decoder;
2012
extern AVCodec qpeg_decoder;
2013
extern AVCodec shorten_decoder;
2014
extern AVCodec loco_decoder;
2015
extern AVCodec alac_decoder;
2016

    
2017
/* pcm codecs */
2018
#define PCM_CODEC(id, name) \
2019
extern AVCodec name ## _decoder; \
2020
extern AVCodec name ## _encoder
2021

    
2022
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2023
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2024
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2025
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2026
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2027
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2028
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2029
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2030

    
2031
/* adpcm codecs */
2032

    
2033
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2034
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2035
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2036
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2037
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2038
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2039
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2040
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2041
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2042
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2043
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2044
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2045
PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2046
PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2047

    
2048
#undef PCM_CODEC
2049

    
2050
/* dummy raw video codec */
2051
extern AVCodec rawvideo_encoder;
2052
extern AVCodec rawvideo_decoder;
2053

    
2054
/* the following codecs use external GPL libs */
2055
extern AVCodec ac3_decoder;
2056
extern AVCodec dts_decoder;
2057

    
2058
/* resample.c */
2059

    
2060
struct ReSampleContext;
2061
struct AVResampleContext;
2062

    
2063
typedef struct ReSampleContext ReSampleContext;
2064

    
2065
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
2066
                                     int output_rate, int input_rate);
2067
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2068
void audio_resample_close(ReSampleContext *s);
2069

    
2070
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2071
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2072
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2073
void av_resample_close(struct AVResampleContext *c);
2074

    
2075
/* YUV420 format is assumed ! */
2076

    
2077
struct ImgReSampleContext;
2078

    
2079
typedef struct ImgReSampleContext ImgReSampleContext;
2080

    
2081
ImgReSampleContext *img_resample_init(int output_width, int output_height,
2082
                                      int input_width, int input_height);
2083

    
2084
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2085
                                      int iwidth, int iheight,
2086
                                      int topBand, int bottomBand,
2087
                                      int leftBand, int rightBand,
2088
                                      int padtop, int padbottom,
2089
                                      int padleft, int padright);
2090

    
2091

    
2092
void img_resample(ImgReSampleContext *s, 
2093
                  AVPicture *output, const AVPicture *input);
2094

    
2095
void img_resample_close(ImgReSampleContext *s);
2096

    
2097
/**
2098
 * Allocate memory for a picture.  Call avpicture_free to free it.
2099
 *
2100
 * @param picture the picture to be filled in.
2101
 * @param pix_fmt the format of the picture.
2102
 * @param width the width of the picture.
2103
 * @param height the height of the picture.
2104
 * @return 0 if successful, -1 if not.
2105
 */
2106
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2107

    
2108
/* Free a picture previously allocated by avpicture_alloc. */
2109
void avpicture_free(AVPicture *picture);
2110

    
2111
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2112
                   int pix_fmt, int width, int height);
2113
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2114
                     unsigned char *dest, int dest_size);
2115
int avpicture_get_size(int pix_fmt, int width, int height);
2116
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2117
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2118
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2119
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2120
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2121

    
2122
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
2123
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
2124
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
2125
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
2126
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
2127
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2128

    
2129
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2130
                             int has_alpha);
2131
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2132
                              int has_alpha, int *loss_ptr);
2133

    
2134
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2135
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2136
int img_get_alpha_info(const AVPicture *src,
2137
                       int pix_fmt, int width, int height);
2138

    
2139
/* convert among pixel formats */
2140
int img_convert(AVPicture *dst, int dst_pix_fmt,
2141
                const AVPicture *src, int pix_fmt, 
2142
                int width, int height);
2143

    
2144
/* deinterlace a picture */
2145
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2146
                          int pix_fmt, int width, int height);
2147

    
2148
/* external high level API */
2149

    
2150
extern AVCodec *first_avcodec;
2151

    
2152
/* returns LIBAVCODEC_VERSION_INT constant */
2153
unsigned avcodec_version(void);
2154
/* returns LIBAVCODEC_BUILD constant */
2155
unsigned avcodec_build(void);
2156
void avcodec_init(void);
2157

    
2158
void register_avcodec(AVCodec *format);
2159
AVCodec *avcodec_find_encoder(enum CodecID id);
2160
AVCodec *avcodec_find_encoder_by_name(const char *name);
2161
AVCodec *avcodec_find_decoder(enum CodecID id);
2162
AVCodec *avcodec_find_decoder_by_name(const char *name);
2163
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2164

    
2165
void avcodec_get_context_defaults(AVCodecContext *s);
2166
AVCodecContext *avcodec_alloc_context(void);
2167
void avcodec_get_frame_defaults(AVFrame *pic);
2168
AVFrame *avcodec_alloc_frame(void);
2169

    
2170
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2171
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2172
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2173
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2174
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2175
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2176

    
2177
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2178
void avcodec_thread_free(AVCodecContext *s);
2179
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2180
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2181
//FIXME func typedef
2182

    
2183
/**
2184
 * opens / inits the AVCodecContext.
2185
 * not thread save!
2186
 */
2187
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2188

    
2189
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
2190
                         int *frame_size_ptr,
2191
                         uint8_t *buf, int buf_size);
2192
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
2193
                         int *got_picture_ptr,
2194
                         uint8_t *buf, int buf_size);
2195
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
2196
                        int *data_size_ptr,
2197
                        uint8_t *buf, int buf_size);
2198
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2199
                         const short *samples);
2200
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2201
                         const AVFrame *pict);
2202

    
2203
int avcodec_close(AVCodecContext *avctx);
2204

    
2205
void avcodec_register_all(void);
2206

    
2207
void avcodec_flush_buffers(AVCodecContext *avctx);
2208

    
2209
void avcodec_default_free_buffers(AVCodecContext *s);
2210

    
2211
/* misc usefull functions */
2212

    
2213
/**
2214
 * returns a single letter to describe the picture type
2215
 */
2216
char av_get_pict_type_char(int pict_type);
2217

    
2218
/**
2219
 * reduce a fraction.
2220
 * this is usefull for framerate calculations
2221
 * @param max the maximum allowed for dst_nom & dst_den
2222
 * @return 1 if exact, 0 otherwise
2223
 */
2224
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2225

    
2226
/**
2227
 * rescale a 64bit integer with rounding to nearest.
2228
 * a simple a*b/c isnt possible as it can overflow
2229
 */
2230
int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2231

    
2232
/**
2233
 * rescale a 64bit integer with specified rounding.
2234
 * a simple a*b/c isnt possible as it can overflow
2235
 */
2236
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
2237

    
2238
/* frame parsing */
2239
typedef struct AVCodecParserContext {
2240
    void *priv_data;
2241
    struct AVCodecParser *parser;
2242
    int64_t frame_offset; /* offset of the current frame */
2243
    int64_t cur_offset; /* current offset 
2244
                           (incremented by each av_parser_parse()) */
2245
    int64_t last_frame_offset; /* offset of the last frame */
2246
    /* video info */
2247
    int pict_type; /* XXX: put it back in AVCodecContext */
2248
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2249
    int64_t pts;     /* pts of the current frame */
2250
    int64_t dts;     /* dts of the current frame */
2251

    
2252
    /* private data */
2253
    int64_t last_pts;
2254
    int64_t last_dts;
2255
    int fetch_timestamp;
2256

    
2257
#define AV_PARSER_PTS_NB 4
2258
    int cur_frame_start_index;
2259
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2260
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2261
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2262
} AVCodecParserContext;
2263

    
2264
typedef struct AVCodecParser {
2265
    int codec_ids[5]; /* several codec IDs are permitted */
2266
    int priv_data_size;
2267
    int (*parser_init)(AVCodecParserContext *s);
2268
    int (*parser_parse)(AVCodecParserContext *s, 
2269
                        AVCodecContext *avctx,
2270
                        uint8_t **poutbuf, int *poutbuf_size, 
2271
                        const uint8_t *buf, int buf_size);
2272
    void (*parser_close)(AVCodecParserContext *s);
2273
    struct AVCodecParser *next;
2274
} AVCodecParser;
2275

    
2276
extern AVCodecParser *av_first_parser;
2277

    
2278
void av_register_codec_parser(AVCodecParser *parser);
2279
AVCodecParserContext *av_parser_init(int codec_id);
2280
int av_parser_parse(AVCodecParserContext *s, 
2281
                    AVCodecContext *avctx,
2282
                    uint8_t **poutbuf, int *poutbuf_size, 
2283
                    const uint8_t *buf, int buf_size,
2284
                    int64_t pts, int64_t dts);
2285
void av_parser_close(AVCodecParserContext *s);
2286

    
2287
extern AVCodecParser mpegvideo_parser;
2288
extern AVCodecParser mpeg4video_parser;
2289
extern AVCodecParser h261_parser;
2290
extern AVCodecParser h263_parser;
2291
extern AVCodecParser h264_parser;
2292
extern AVCodecParser mjpeg_parser;
2293
extern AVCodecParser pnm_parser;
2294
extern AVCodecParser mpegaudio_parser;
2295
extern AVCodecParser ac3_parser;
2296

    
2297
/* memory */
2298
void *av_malloc(unsigned int size);
2299
void *av_mallocz(unsigned int size);
2300
void *av_realloc(void *ptr, unsigned int size);
2301
void av_free(void *ptr);
2302
char *av_strdup(const char *s);
2303
void av_freep(void *ptr);
2304
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2305
/* for static data only */
2306
/* call av_free_static to release all staticaly allocated tables */
2307
void av_free_static(void);
2308
void *av_mallocz_static(unsigned int size);
2309
void *av_realloc_static(void *ptr, unsigned int size);
2310

    
2311
/* add by bero : in adx.c */
2312
int is_adx(const unsigned char *buf,size_t bufsize);
2313

    
2314
void img_copy(AVPicture *dst, const AVPicture *src,
2315
              int pix_fmt, int width, int height);
2316

    
2317
/* av_log API */
2318

    
2319
#include <stdarg.h>
2320

    
2321
#define AV_LOG_QUIET -1
2322
#define AV_LOG_ERROR 0
2323
#define AV_LOG_INFO 1
2324
#define AV_LOG_DEBUG 2
2325

    
2326
#ifdef __GNUC__
2327
extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2328
#else
2329
extern void av_log(void*, int level, const char *fmt, ...);
2330
#endif
2331

    
2332
extern void av_vlog(void*, int level, const char *fmt, va_list);
2333
extern int av_log_get_level(void);
2334
extern void av_log_set_level(int);
2335
extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2336

    
2337
/* endian macros */
2338
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2339
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2340
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2341
                   (((uint8_t*)(x))[1] << 16) | \
2342
                   (((uint8_t*)(x))[2] << 8) | \
2343
                    ((uint8_t*)(x))[3])
2344
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2345
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2346
                   (((uint8_t*)(x))[2] << 16) | \
2347
                   (((uint8_t*)(x))[1] << 8) | \
2348
                    ((uint8_t*)(x))[0])
2349
#endif
2350

    
2351
#ifdef __cplusplus
2352
}
2353
#endif
2354

    
2355
#endif /* AVCODEC_H */