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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     0x000408
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#define FFMPEG_VERSION         "0.4.8"
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#define LIBAVCODEC_BUILD       4706
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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_H263,
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    CODEC_ID_RV10,
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    CODEC_ID_RV20,
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    CODEC_ID_MP2,
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    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
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    CODEC_ID_VORBIS,
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    CODEC_ID_AC3,
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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_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_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_AAC,
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    CODEC_ID_MPEG4AAC,
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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_VMDAUDIO,
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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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    /* various pcm "codecs" */
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    CODEC_ID_PCM_S16LE,
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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,
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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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        /* AMR */
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    CODEC_ID_AMR_NB,
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    CODEC_ID_AMR_WB,
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    /* RealAudio codecs*/
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    CODEC_ID_RA_144,
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    CODEC_ID_RA_288,
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    /* various DPCM codecs */
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    CODEC_ID_ROQ_DPCM,
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    CODEC_ID_INTERPLAY_DPCM,
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    CODEC_ID_XAN_DPCM,
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    CODEC_ID_FLAC,
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    CODEC_ID_MPEG2TS, /* _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,    
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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_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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};
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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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/* 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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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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/* 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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//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
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 */
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typedef struct AVPanScan{
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    /**
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     * id.
328
     * - encoding: set by user.
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     * - decoding: set by lavc
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     */
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    int id;
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    /**
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     * width and height in 1/16 pel
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     * - encoding: set by user.
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     * - decoding: set by lavc
337
     */
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    int width;
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    int height;
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    /**
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     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
343
     * - encoding: set by user.
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     * - decoding: set by lavc
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     */
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    int16_t position[3][2];
347
}AVPanScan;
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#define FF_COMMON_FRAME \
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    /**\
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     * pointer to the picture planes.\
352
     * this might be different from the first allocated byte\
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     * - encoding: \
354
     * - decoding: \
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     */\
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    uint8_t *data[4];\
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    int linesize[4];\
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    /**\
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     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
360
     * this isnt used by lavc unless the default get/release_buffer() is used\
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     * - encoding: \
362
     * - decoding: \
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     */\
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    uint8_t *base[4];\
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    /**\
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     * 1 -> keyframe, 0-> not\
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     * - encoding: set by lavc\
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     * - decoding: set by lavc\
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     */\
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    int key_frame;\
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\
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    /**\
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     * picture type of the frame, see ?_TYPE below.\
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     * - encoding: set by lavc for coded_picture (and set by user for input)\
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     * - decoding: set by lavc\
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     */\
377
    int pict_type;\
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\
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    /**\
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     * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
381
     * 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\
384
     */\
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    int64_t pts;\
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\
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    /**\
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     * picture number in bitstream order.\
389
     * - encoding: set by\
390
     * - decoding: set by lavc\
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     */\
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    int coded_picture_number;\
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    /**\
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     * picture number in display order.\
395
     * - encoding: set by\
396
     * - decoding: set by lavc\
397
     */\
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    int display_picture_number;\
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\
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    /**\
401
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
402
     * - encoding: set by lavc for coded_picture (and set by user for input)\
403
     * - decoding: set by lavc\
404
     */\
405
    int quality; \
406
\
407
    /**\
408
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
409
     * set to INT_MAX if the buffer has not been used yet \
410
     * - encoding: unused\
411
     * - decoding: MUST be set by get_buffer()\
412
     */\
413
    int age;\
414
\
415
    /**\
416
     * is this picture used as reference\
417
     * - encoding: unused\
418
     * - decoding: set by lavc (before get_buffer() call))\
419
     */\
420
    int reference;\
421
\
422
    /**\
423
     * QP table\
424
     * - encoding: unused\
425
     * - decoding: set by lavc\
426
     */\
427
    int8_t *qscale_table;\
428
    /**\
429
     * QP store stride\
430
     * - encoding: unused\
431
     * - decoding: set by lavc\
432
     */\
433
    int qstride;\
434
\
435
    /**\
436
     * mbskip_table[mb]>=1 if MB didnt change\
437
     * stride= mb_width = (width+15)>>4\
438
     * - encoding: unused\
439
     * - decoding: set by lavc\
440
     */\
441
    uint8_t *mbskip_table;\
442
\
443
    /**\
444
     * Motion vector table\
445
     * - encoding: unused\
446
     * - decoding: set by lavc\
447
     */\
448
    int16_t (*motion_val[2])[2];\
449
\
450
    /**\
451
     * Macroblock type table\
452
     * mb_type_base + mb_width + 2\
453
     * - encoding: unused\
454
     * - decoding: set by lavc\
455
     */\
456
    uint32_t *mb_type;\
457
\
458
    /**\
459
     * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
460
     * - encoding: unused\
461
     * - decoding: set by lavc\
462
     */\
463
    uint8_t motion_subsample_log2;\
464
\
465
    /**\
466
     * for some private data of the user\
467
     * - encoding: unused\
468
     * - decoding: set by user\
469
     */\
470
    void *opaque;\
471
\
472
    /**\
473
     * error\
474
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
475
     * - decoding: unused\
476
     */\
477
    uint64_t error[4];\
478
\
479
    /**\
480
     * type of the buffer (to keep track of who has to dealloc data[*])\
481
     * - encoding: set by the one who allocs it\
482
     * - decoding: set by the one who allocs it\
483
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
484
     */\
485
    int type;\
486
    \
487
    /**\
488
     * when decoding, this signal how much the picture must be delayed.\
489
     * extra_delay = repeat_pict / (2*fps)\
490
     * - encoding: unused\
491
     * - decoding: set by lavc\
492
     */\
493
    int repeat_pict;\
494
    \
495
    /**\
496
     * \
497
     */\
498
    int qscale_type;\
499
    \
500
    /**\
501
     * The content of the picture is interlaced.\
502
     * - encoding: set by user\
503
     * - decoding: set by lavc (default 0)\
504
     */\
505
    int interlaced_frame;\
506
    \
507
    /**\
508
     * if the content is interlaced, is top field displayed first.\
509
     * - encoding: set by user\
510
     * - decoding: set by lavc\
511
     */\
512
    int top_field_first;\
513
    \
514
    /**\
515
     * Pan scan.\
516
     * - encoding: set by user\
517
     * - decoding: set by lavc\
518
     */\
519
    AVPanScan *pan_scan;\
520
    \
521
    /**\
522
     * tell user application that palette has changed from previous frame.\
523
     * - encoding: ??? (no palette-enabled encoder yet)\
524
     * - decoding: set by lavc (default 0)\
525
     */\
526
    int palette_has_changed;\
527
    \
528
    /**\
529
     * Codec suggestion on buffer type if != 0\
530
     * - encoding: unused\
531
     * - decoding: set by lavc (before get_buffer() call))\
532
     */\
533
    int buffer_hints;\
534
\
535
    /**\
536
     * DCT coeffitients\
537
     * - encoding: unused\
538
     * - decoding: set by lavc\
539
     */\
540
    short *dct_coeff;\
541

    
542
#define FF_QSCALE_TYPE_MPEG1        0
543
#define FF_QSCALE_TYPE_MPEG2        1
544

    
545
#define FF_BUFFER_TYPE_INTERNAL 1
546
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
547
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base)
548
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
549

    
550

    
551
#define FF_I_TYPE 1 // Intra
552
#define FF_P_TYPE 2 // Predicted
553
#define FF_B_TYPE 3 // Bi-dir predicted
554
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
555
#define FF_SI_TYPE 5
556
#define FF_SP_TYPE 6
557

    
558
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
559
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
560
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
561
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
562

    
563
/**
564
 * Audio Video Frame.
565
 */
566
typedef struct AVFrame {
567
    FF_COMMON_FRAME
568
} AVFrame;
569

    
570
#define DEFAULT_FRAME_RATE_BASE 1001000
571

    
572
/**
573
 * main external api structure.
574
 */
575
typedef struct AVCodecContext {
576
    /**
577
     * the average bitrate.
578
     * - encoding: set by user. unused for constant quantizer encoding
579
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
580
     */
581
    int bit_rate;
582

    
583
    /**
584
     * number of bits the bitstream is allowed to diverge from the reference.
585
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
586
     * - encoding: set by user. unused for constant quantizer encoding
587
     * - decoding: unused
588
     */
589
    int bit_rate_tolerance; 
590

    
591
    /**
592
     * CODEC_FLAG_*.
593
     * - encoding: set by user.
594
     * - decoding: set by user.
595
     */
596
    int flags;
597

    
598
    /**
599
     * some codecs needs additionnal format info. It is stored here
600
     * - encoding: set by user. 
601
     * - decoding: set by lavc. (FIXME is this ok?)
602
     */
603
    int sub_id;
604

    
605
    /**
606
     * motion estimation algorithm used for video coding.
607
     * - encoding: MUST be set by user.
608
     * - decoding: unused
609
     */
610
    int me_method;
611

    
612
    /**
613
     * some codecs need / can use extra-data like huffman tables.
614
     * mjpeg: huffman tables
615
     * rv10: additional flags
616
     * mpeg4: global headers (they can be in the bitstream or here)
617
     * - encoding: set/allocated/freed by lavc.
618
     * - decoding: set/allocated/freed by user.
619
     */
620
    void *extradata;
621
    int extradata_size;
622
    
623
    /* video only */
624
    /**
625
     * frames per sec multiplied by frame_rate_base.
626
     * for variable fps this is the precission, so if the timestamps 
627
     * can be specified in msec precssion then this is 1000*frame_rate_base
628
     * - encoding: MUST be set by user
629
     * - decoding: set by lavc. 0 or the frame_rate if available
630
     */
631
    int frame_rate;
632
    
633
    /**
634
     * width / height.
635
     * - encoding: MUST be set by user. 
636
     * - decoding: set by user if known, codec should override / dynamically change if needed
637
     */
638
    int width, height;
639
    
640
#define FF_ASPECT_EXTENDED 15
641

    
642
    /**
643
     * the number of pictures in a group of pitures, or 0 for intra_only.
644
     * - encoding: set by user.
645
     * - decoding: unused
646
     */
647
    int gop_size;
648

    
649
    /**
650
     * pixel format, see PIX_FMT_xxx.
651
     * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
652
     *                    conversion is in order. This only works for
653
     *                    codecs with one supported pix_fmt, we should
654
     *                    do something for a generic case as well.
655
     * - decoding: set by lavc.
656
     */
657
    enum PixelFormat pix_fmt;
658
 
659
    /**
660
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
661
     * has to read frames at native frame rate.
662
     * - encoding: set by user.
663
     * - decoding: unused.
664
     */
665
    int rate_emu;
666
       
667
    /**
668
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
669
     * decoder to draw an horizontal band. It improve cache usage. Not
670
     * all codecs can do that. You must check the codec capabilities
671
     * before
672
     * - encoding: unused
673
     * - decoding: set by user.
674
     * @param height the height of the slice
675
     * @param y the y position of the slice
676
     * @param type 1->top field, 2->bottom field, 3->frame
677
     * @param offset offset into the AVFrame.data from which the slice should be read
678
     */
679
    void (*draw_horiz_band)(struct AVCodecContext *s,
680
                            const AVFrame *src, int offset[4],
681
                            int y, int type, int height);
682

    
683
    /* audio only */
684
    int sample_rate; ///< samples per sec 
685
    int channels;
686
    int sample_fmt;  ///< sample format, currenly unused 
687

    
688
    /* the following data should not be initialized */
689
    int frame_size;     ///< in samples, initialized when calling 'init' 
690
    int frame_number;   ///< audio or video frame number 
691
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
692
    
693
    /**
694
     * number of frames the decoded output will be delayed relative to 
695
     * the encoded input.
696
     * - encoding: set by lavc.
697
     * - decoding: unused
698
     */
699
    int delay;
700
    
701
    /* - encoding parameters */
702
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
703
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
704
    
705
    /**
706
     * minimum quantizer.
707
     * - encoding: set by user.
708
     * - decoding: unused
709
     */
710
    int qmin;
711

    
712
    /**
713
     * maximum quantizer.
714
     * - encoding: set by user.
715
     * - decoding: unused
716
     */
717
    int qmax;
718

    
719
    /**
720
     * maximum quantizer difference etween frames.
721
     * - encoding: set by user.
722
     * - decoding: unused
723
     */
724
    int max_qdiff;
725

    
726
    /**
727
     * maximum number of b frames between non b frames.
728
     * note: the output will be delayed by max_b_frames+1 relative to the input
729
     * - encoding: set by user.
730
     * - decoding: unused
731
     */
732
    int max_b_frames;
733

    
734
    /**
735
     * qscale factor between ip and b frames.
736
     * - encoding: set by user.
737
     * - decoding: unused
738
     */
739
    float b_quant_factor;
740
    
741
    /** obsolete FIXME remove */
742
    int rc_strategy;
743
    int b_frame_strategy;
744

    
745
    /**
746
     * hurry up amount.
747
     * - encoding: unused
748
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
749
     */
750
    int hurry_up;
751
    
752
    struct AVCodec *codec;
753
    
754
    void *priv_data;
755

    
756
    /* unused, FIXME remove*/
757
    int rtp_mode;
758
    
759
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
760
                            /* do it's best to deliver a chunk with size    */
761
                            /* below rtp_payload_size, the chunk will start */
762
                            /* with a start code on some codecs like H.263  */
763
                            /* This doesn't take account of any particular  */
764
                            /* headers inside the transmited RTP payload    */
765

    
766
    
767
    /* The RTP callcack: This function is called  */
768
    /* every time the encoder as a packet to send */
769
    /* Depends on the encoder if the data starts  */
770
    /* with a Start Code (it should) H.263 does   */
771
    void (*rtp_callback)(void *data, int size, int packet_number); 
772

    
773
    /* statistics, used for 2-pass encoding */
774
    int mv_bits;
775
    int header_bits;
776
    int i_tex_bits;
777
    int p_tex_bits;
778
    int i_count;
779
    int p_count;
780
    int skip_count;
781
    int misc_bits;
782
    
783
    /**
784
     * number of bits used for the previously encoded frame.
785
     * - encoding: set by lavc
786
     * - decoding: unused
787
     */
788
    int frame_bits;
789

    
790
    /**
791
     * private data of the user, can be used to carry app specific stuff.
792
     * - encoding: set by user
793
     * - decoding: set by user
794
     */
795
    void *opaque;
796

    
797
    char codec_name[32];
798
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
799
    enum CodecID codec_id; /* see CODEC_ID_xxx */
800
    
801
    /**
802
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
803
     * this is used to workaround some encoder bugs
804
     * - encoding: set by user, if not then the default based on codec_id will be used
805
     * - decoding: set by user, will be converted to upper case by lavc during init
806
     */
807
    unsigned int codec_tag;
808
    
809
    /**
810
     * workaround bugs in encoders which sometimes cannot be detected automatically.
811
     * - encoding: unused
812
     * - decoding: set by user
813
     */
814
    int workaround_bugs;
815
#define FF_BUG_AUTODETECT       1  ///< autodetection
816
#define FF_BUG_OLD_MSMPEG4      2
817
#define FF_BUG_XVID_ILACE       4
818
#define FF_BUG_UMP4             8
819
#define FF_BUG_NO_PADDING       16
820
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
821
#define FF_BUG_QPEL_CHROMA      64
822
#define FF_BUG_STD_QPEL         128
823
#define FF_BUG_QPEL_CHROMA2     256
824
#define FF_BUG_DIRECT_BLOCKSIZE 512
825
#define FF_BUG_EDGE             1024
826
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
827
        
828
    /**
829
     * luma single coeff elimination threshold.
830
     * - encoding: set by user
831
     * - decoding: unused
832
     */
833
    int luma_elim_threshold;
834
    
835
    /**
836
     * chroma single coeff elimination threshold.
837
     * - encoding: set by user
838
     * - decoding: unused
839
     */
840
    int chroma_elim_threshold;
841
    
842
    /**
843
     * strictly follow the std (MPEG4, ...).
844
     * - encoding: set by user
845
     * - decoding: unused
846
     */
847
    int strict_std_compliance;
848
    
849
    /**
850
     * qscale offset between ip and b frames.
851
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
852
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
853
     * - encoding: set by user.
854
     * - decoding: unused
855
     */
856
    float b_quant_offset;
857
    
858
    /**
859
     * error resilience higher values will detect more errors but may missdetect
860
     * some more or less valid parts as errors.
861
     * - encoding: unused
862
     * - decoding: set by user
863
     */
864
    int error_resilience;
865
#define FF_ER_CAREFULL        1
866
#define FF_ER_COMPLIANT       2
867
#define FF_ER_AGGRESSIVE      3
868
#define FF_ER_VERY_AGGRESSIVE 4
869
    
870
    /**
871
     * called at the beginning of each frame to get a buffer for it.
872
     * if pic.reference is set then the frame will be read later by lavc
873
     * width and height should be rounded up to the next multiple of 16
874
     * - encoding: unused
875
     * - decoding: set by lavc, user can override
876
     */
877
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
878
    
879
    /**
880
     * called to release buffers which where allocated with get_buffer.
881
     * a released buffer can be reused in get_buffer()
882
     * pic.data[*] must be set to NULL
883
     * - encoding: unused
884
     * - decoding: set by lavc, user can override
885
     */
886
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
887

    
888
    /**
889
     * is 1 if the decoded stream contains b frames, 0 otherwise.
890
     * - encoding: unused
891
     * - decoding: set by lavc
892
     */
893
    int has_b_frames;
894
    
895
    int block_align; ///< used by some WAV based audio codecs
896
    
897
    int parse_only; /* - decoding only: if true, only parsing is done
898
                       (function avcodec_parse_frame()). The frame
899
                       data is returned. Only MPEG codecs support this now. */
900
    
901
    /**
902
     * 0-> h263 quant 1-> mpeg quant.
903
     * - encoding: set by user.
904
     * - decoding: unused
905
     */
906
    int mpeg_quant;
907
    
908
    /**
909
     * pass1 encoding statistics output buffer.
910
     * - encoding: set by lavc
911
     * - decoding: unused
912
     */
913
    char *stats_out;
914
    
915
    /**
916
     * pass2 encoding statistics input buffer.
917
     * concatenated stuff from stats_out of pass1 should be placed here
918
     * - encoding: allocated/set/freed by user
919
     * - decoding: unused
920
     */
921
    char *stats_in;
922
    
923
    /**
924
     * ratecontrol qmin qmax limiting method.
925
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
926
     * - encoding: set by user.
927
     * - decoding: unused
928
     */
929
    float rc_qsquish;
930

    
931
    float rc_qmod_amp;
932
    int rc_qmod_freq;
933
    
934
    /**
935
     * ratecontrol override, see RcOverride.
936
     * - encoding: allocated/set/freed by user.
937
     * - decoding: unused
938
     */
939
    RcOverride *rc_override;
940
    int rc_override_count;
941
    
942
    /**
943
     * rate control equation.
944
     * - encoding: set by user
945
     * - decoding: unused
946
     */
947
    char *rc_eq;
948
    
949
    /**
950
     * maximum bitrate.
951
     * - encoding: set by user.
952
     * - decoding: unused
953
     */
954
    int rc_max_rate;
955
    
956
    /**
957
     * minimum bitrate.
958
     * - encoding: set by user.
959
     * - decoding: unused
960
     */
961
    int rc_min_rate;
962
    
963
    /**
964
     * decoder bitstream buffer size.
965
     * - encoding: set by user.
966
     * - decoding: unused
967
     */
968
    int rc_buffer_size;
969
    float rc_buffer_aggressivity;
970

    
971
    /**
972
     * qscale factor between p and i frames.
973
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
974
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
975
     * - encoding: set by user.
976
     * - decoding: unused
977
     */
978
    float i_quant_factor;
979
    
980
    /**
981
     * qscale offset between p and i frames.
982
     * - encoding: set by user.
983
     * - decoding: unused
984
     */
985
    float i_quant_offset;
986
    
987
    /**
988
     * initial complexity for pass1 ratecontrol.
989
     * - encoding: set by user.
990
     * - decoding: unused
991
     */
992
    float rc_initial_cplx;
993

    
994
    /**
995
     * dct algorithm, see FF_DCT_* below.
996
     * - encoding: set by user
997
     * - decoding: unused
998
     */
999
    int dct_algo;
1000
#define FF_DCT_AUTO    0
1001
#define FF_DCT_FASTINT 1
1002
#define FF_DCT_INT     2
1003
#define FF_DCT_MMX     3
1004
#define FF_DCT_MLIB    4
1005
#define FF_DCT_ALTIVEC 5
1006
#define FF_DCT_FAAN    6
1007
    
1008
    /**
1009
     * luminance masking (0-> disabled).
1010
     * - encoding: set by user
1011
     * - decoding: unused
1012
     */
1013
    float lumi_masking;
1014
    
1015
    /**
1016
     * temporary complexity masking (0-> disabled).
1017
     * - encoding: set by user
1018
     * - decoding: unused
1019
     */
1020
    float temporal_cplx_masking;
1021
    
1022
    /**
1023
     * spatial complexity masking (0-> disabled).
1024
     * - encoding: set by user
1025
     * - decoding: unused
1026
     */
1027
    float spatial_cplx_masking;
1028
    
1029
    /**
1030
     * p block masking (0-> disabled).
1031
     * - encoding: set by user
1032
     * - decoding: unused
1033
     */
1034
    float p_masking;
1035

    
1036
    /**
1037
     * darkness masking (0-> disabled).
1038
     * - encoding: set by user
1039
     * - decoding: unused
1040
     */
1041
    float dark_masking;
1042
    
1043
    
1044
    /* for binary compatibility */
1045
    int unused;
1046
    
1047
    /**
1048
     * idct algorithm, see FF_IDCT_* below.
1049
     * - encoding: set by user
1050
     * - decoding: set by user
1051
     */
1052
    int idct_algo;
1053
#define FF_IDCT_AUTO         0
1054
#define FF_IDCT_INT          1
1055
#define FF_IDCT_SIMPLE       2
1056
#define FF_IDCT_SIMPLEMMX    3
1057
#define FF_IDCT_LIBMPEG2MMX  4
1058
#define FF_IDCT_PS2          5
1059
#define FF_IDCT_MLIB         6
1060
#define FF_IDCT_ARM          7
1061
#define FF_IDCT_ALTIVEC      8
1062
#define FF_IDCT_SH4          9
1063
#define FF_IDCT_SIMPLEARM    10
1064

    
1065
    /**
1066
     * slice count.
1067
     * - encoding: set by lavc
1068
     * - decoding: set by user (or 0)
1069
     */
1070
    int slice_count;
1071
    /**
1072
     * slice offsets in the frame in bytes.
1073
     * - encoding: set/allocated by lavc
1074
     * - decoding: set/allocated by user (or NULL)
1075
     */
1076
    int *slice_offset;
1077

    
1078
    /**
1079
     * error concealment flags.
1080
     * - encoding: unused
1081
     * - decoding: set by user
1082
     */
1083
    int error_concealment;
1084
#define FF_EC_GUESS_MVS   1
1085
#define FF_EC_DEBLOCK     2
1086

    
1087
    /**
1088
     * dsp_mask could be add used to disable unwanted CPU features
1089
     * CPU features (i.e. MMX, SSE. ...)
1090
     *
1091
     * with FORCE flag you may instead enable given CPU features
1092
     * (Dangerous: usable in case of misdetection, improper usage however will
1093
     * result into program crash)
1094
     */
1095
    unsigned dsp_mask;
1096
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1097
    /* lower 16 bits - CPU features */
1098
#ifdef HAVE_MMX
1099
#define FF_MM_MMX        0x0001 /* standard MMX */
1100
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1101
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1102
#define FF_MM_SSE        0x0008 /* SSE functions */
1103
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1104
#endif /* HAVE_MMX */
1105

    
1106
    /**
1107
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1108
     * - encoding: set by lavc
1109
     * - decoding: set by user
1110
     */
1111
     int bits_per_sample;
1112
    
1113
    /**
1114
     * prediction method (needed for huffyuv).
1115
     * - encoding: set by user
1116
     * - decoding: unused
1117
     */
1118
     int prediction_method;
1119
#define FF_PRED_LEFT   0
1120
#define FF_PRED_PLANE  1
1121
#define FF_PRED_MEDIAN 2
1122
    
1123
    /**
1124
     * sample aspect ratio (0 if unknown).
1125
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1126
     * - encoding: set by user.
1127
     * - decoding: set by lavc.
1128
     */
1129
    AVRational sample_aspect_ratio;
1130

    
1131
    /**
1132
     * the picture in the bitstream.
1133
     * - encoding: set by lavc
1134
     * - decoding: set by lavc
1135
     */
1136
    AVFrame *coded_frame;
1137

    
1138
    /**
1139
     * debug.
1140
     * - encoding: set by user.
1141
     * - decoding: set by user.
1142
     */
1143
    int debug;
1144
#define FF_DEBUG_PICT_INFO 1
1145
#define FF_DEBUG_RC        2
1146
#define FF_DEBUG_BITSTREAM 4
1147
#define FF_DEBUG_MB_TYPE   8
1148
#define FF_DEBUG_QP        16
1149
#define FF_DEBUG_MV        32
1150
#define FF_DEBUG_DCT_COEFF 0x00000040
1151
#define FF_DEBUG_SKIP      0x00000080
1152
#define FF_DEBUG_STARTCODE 0x00000100
1153
#define FF_DEBUG_PTS       0x00000200
1154
#define FF_DEBUG_ER        0x00000400
1155
#define FF_DEBUG_MMCO      0x00000800
1156
#define FF_DEBUG_BUGS      0x00001000
1157
#define FF_DEBUG_VIS_QP    0x00002000
1158
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1159
    
1160
    /**
1161
     * debug.
1162
     * - encoding: set by user.
1163
     * - decoding: set by user.
1164
     */
1165
    int debug_mv;
1166
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1167
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1168
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1169

    
1170
    /**
1171
     * error.
1172
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1173
     * - decoding: unused
1174
     */
1175
    uint64_t error[4];
1176
    
1177
    /**
1178
     * minimum MB quantizer.
1179
     * - encoding: set by user.
1180
     * - decoding: unused
1181
     */
1182
    int mb_qmin;
1183

    
1184
    /**
1185
     * maximum MB quantizer.
1186
     * - encoding: set by user.
1187
     * - decoding: unused
1188
     */
1189
    int mb_qmax;
1190
    
1191
    /**
1192
     * motion estimation compare function.
1193
     * - encoding: set by user.
1194
     * - decoding: unused
1195
     */
1196
    int me_cmp;
1197
    /**
1198
     * subpixel motion estimation compare function.
1199
     * - encoding: set by user.
1200
     * - decoding: unused
1201
     */
1202
    int me_sub_cmp;
1203
    /**
1204
     * macroblock compare function (not supported yet).
1205
     * - encoding: set by user.
1206
     * - decoding: unused
1207
     */
1208
    int mb_cmp;
1209
    /**
1210
     * interlaced dct compare function
1211
     * - encoding: set by user.
1212
     * - decoding: unused
1213
     */
1214
    int ildct_cmp;
1215
#define FF_CMP_SAD  0
1216
#define FF_CMP_SSE  1
1217
#define FF_CMP_SATD 2
1218
#define FF_CMP_DCT  3
1219
#define FF_CMP_PSNR 4
1220
#define FF_CMP_BIT  5
1221
#define FF_CMP_RD   6
1222
#define FF_CMP_ZERO 7
1223
#define FF_CMP_VSAD 8
1224
#define FF_CMP_VSSE 9
1225
#define FF_CMP_CHROMA 256
1226
    
1227
    /**
1228
     * ME diamond size & shape.
1229
     * - encoding: set by user.
1230
     * - decoding: unused
1231
     */
1232
    int dia_size;
1233

    
1234
    /**
1235
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1236
     * - encoding: set by user.
1237
     * - decoding: unused
1238
     */
1239
    int last_predictor_count;
1240

    
1241
    /**
1242
     * pre pass for motion estimation.
1243
     * - encoding: set by user.
1244
     * - decoding: unused
1245
     */
1246
    int pre_me;
1247

    
1248
    /**
1249
     * motion estimation pre pass compare function.
1250
     * - encoding: set by user.
1251
     * - decoding: unused
1252
     */
1253
    int me_pre_cmp;
1254

    
1255
    /**
1256
     * ME pre pass diamond size & shape.
1257
     * - encoding: set by user.
1258
     * - decoding: unused
1259
     */
1260
    int pre_dia_size;
1261

    
1262
    /**
1263
     * subpel ME quality.
1264
     * - encoding: set by user.
1265
     * - decoding: unused
1266
     */
1267
    int me_subpel_quality;
1268

    
1269
    /**
1270
     * callback to negotiate the pixelFormat.
1271
     * @param fmt is the list of formats which are supported by the codec,
1272
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1273
     * the first is allways the native one
1274
     * @return the choosen format
1275
     * - encoding: unused
1276
     * - decoding: set by user, if not set then the native format will always be choosen
1277
     */
1278
    enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1279

    
1280
    /**
1281
     * DTG active format information (additionnal aspect ratio
1282
     * information only used in DVB MPEG2 transport streams). 0 if
1283
     * not set.
1284
     * 
1285
     * - encoding: unused.
1286
     * - decoding: set by decoder 
1287
     */
1288
    int dtg_active_format;
1289
#define FF_DTG_AFD_SAME         8
1290
#define FF_DTG_AFD_4_3          9
1291
#define FF_DTG_AFD_16_9         10
1292
#define FF_DTG_AFD_14_9         11
1293
#define FF_DTG_AFD_4_3_SP_14_9  13
1294
#define FF_DTG_AFD_16_9_SP_14_9 14
1295
#define FF_DTG_AFD_SP_4_3       15
1296

    
1297
    /**
1298
     * Maximum motion estimation search range in subpel units.
1299
     * if 0 then no limit
1300
     * 
1301
     * - encoding: set by user.
1302
     * - decoding: unused.
1303
     */
1304
    int me_range;
1305

    
1306
    /**
1307
     * frame_rate_base.
1308
     * for variable fps this is 1
1309
     * - encoding: set by user.
1310
     * - decoding: set by lavc.
1311
     * @todo move this after frame_rate
1312
     */
1313

    
1314
    int frame_rate_base;
1315
    /**
1316
     * intra quantizer bias.
1317
     * - encoding: set by user.
1318
     * - decoding: unused
1319
     */
1320
    int intra_quant_bias;
1321
#define FF_DEFAULT_QUANT_BIAS 999999
1322
    
1323
    /**
1324
     * inter quantizer bias.
1325
     * - encoding: set by user.
1326
     * - decoding: unused
1327
     */
1328
    int inter_quant_bias;
1329

    
1330
    /**
1331
     * color table ID.
1332
     * - encoding: unused.
1333
     * - decoding: which clrtable should be used for 8bit RGB images
1334
     *             table have to be stored somewhere FIXME
1335
     */
1336
    int color_table_id;
1337
    
1338
    /**
1339
     * internal_buffer count. 
1340
     * Dont touch, used by lavc default_get_buffer()
1341
     */
1342
    int internal_buffer_count;
1343
    
1344
    /**
1345
     * internal_buffers. 
1346
     * Dont touch, used by lavc default_get_buffer()
1347
     */
1348
    void *internal_buffer;
1349

    
1350
#define FF_LAMBDA_SHIFT 7
1351
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1352
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1353
#define FF_LAMBDA_MAX (256*128-1)
1354

    
1355
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1356
    /**
1357
     * global quality for codecs which cannot change it per frame.
1358
     * this should be proportional to MPEG1/2/4 qscale.
1359
     * - encoding: set by user.
1360
     * - decoding: unused
1361
     */
1362
    int global_quality;
1363
    
1364
#define FF_CODER_TYPE_VLC   0
1365
#define FF_CODER_TYPE_AC    1
1366
    /**
1367
     * coder type
1368
     * - encoding: set by user.
1369
     * - decoding: unused
1370
     */
1371
    int coder_type;
1372

    
1373
    /**
1374
     * context model
1375
     * - encoding: set by user.
1376
     * - decoding: unused
1377
     */
1378
    int context_model;
1379
    
1380
    /**
1381
     * slice flags
1382
     * - encoding: unused
1383
     * - decoding: set by user.
1384
     */
1385
    int slice_flags;
1386
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1387
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1388
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1389

    
1390
    /**
1391
     * XVideo Motion Acceleration
1392
     * - encoding: forbidden
1393
     * - decoding: set by decoder
1394
     */
1395
    int xvmc_acceleration;
1396
    
1397
    /**
1398
     * macroblock decision mode
1399
     * - encoding: set by user.
1400
     * - decoding: unused
1401
     */
1402
    int mb_decision;
1403
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1404
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1405
#define FF_MB_DECISION_RD     2        ///< rate distoration
1406

    
1407
    /**
1408
     * custom intra quantization matrix
1409
     * - encoding: set by user, can be NULL
1410
     * - decoding: set by lavc
1411
     */
1412
    uint16_t *intra_matrix;
1413

    
1414
    /**
1415
     * custom inter quantization matrix
1416
     * - encoding: set by user, can be NULL
1417
     * - decoding: set by lavc
1418
     */
1419
    uint16_t *inter_matrix;
1420
    
1421
    /**
1422
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1423
     * this is used to workaround some encoder bugs
1424
     * - encoding: unused
1425
     * - decoding: set by user, will be converted to upper case by lavc during init
1426
     */
1427
    unsigned int stream_codec_tag;
1428

    
1429
    /**
1430
     * scene change detection threshold.
1431
     * 0 is default, larger means fewer detected scene changes
1432
     * - encoding: set by user.
1433
     * - decoding: unused
1434
     */
1435
    int scenechange_threshold;
1436

    
1437
    /**
1438
     * minimum lagrange multipler
1439
     * - encoding: set by user.
1440
     * - decoding: unused
1441
     */
1442
    int lmin;
1443

    
1444
    /**
1445
     * maximum lagrange multipler
1446
     * - encoding: set by user.
1447
     * - decoding: unused
1448
     */
1449
    int lmax;
1450

    
1451
    /**
1452
     * Palette control structure
1453
     * - encoding: ??? (no palette-enabled encoder yet)
1454
     * - decoding: set by user.
1455
     */
1456
    struct AVPaletteControl *palctrl;
1457

    
1458
    /**
1459
     * noise reduction strength
1460
     * - encoding: set by user.
1461
     * - decoding: unused
1462
     */
1463
    int noise_reduction;
1464
    
1465
    /**
1466
     * called at the beginning of a frame to get cr buffer for it.
1467
     * buffer type (size, hints) must be the same. lavc won't check it.
1468
     * lavc will pass previous buffer in pic, function should return
1469
     * same buffer or new buffer with old frame "painted" into it.
1470
     * if pic.data[0] == NULL must behave like get_buffer().
1471
     * - encoding: unused
1472
     * - decoding: set by lavc, user can override
1473
     */
1474
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1475

    
1476
    /**
1477
     * number of bits which should be loaded into the rc buffer before decoding starts
1478
     * - encoding: set by user.
1479
     * - decoding: unused
1480
     */
1481
    int rc_initial_buffer_occupancy;
1482

    
1483
    /**
1484
     *
1485
     * - encoding: set by user.
1486
     * - decoding: unused
1487
     */
1488
    int inter_threshold;
1489

    
1490
    /**
1491
     * CODEC_FLAG2_*.
1492
     * - encoding: set by user.
1493
     * - decoding: set by user.
1494
     */
1495
    int flags2;
1496

    
1497
    /**
1498
     * simulates errors in the bitstream to test error concealment.
1499
     * - encoding: set by user.
1500
     * - decoding: unused.
1501
     */
1502
    int error_rate;
1503
    
1504
    /**
1505
     * MP3 antialias algorithm, see FF_AA_* below.
1506
     * - encoding: unused
1507
     * - decoding: set by user
1508
     */
1509
    int antialias_algo;
1510
#define FF_AA_AUTO    0
1511
#define FF_AA_FASTINT 1 //not implemented yet
1512
#define FF_AA_INT     2
1513
#define FF_AA_FLOAT   3
1514
    /**
1515
     * Quantizer noise shaping.
1516
     * - encoding: set by user
1517
     * - decoding: unused
1518
     */
1519
    int quantizer_noise_shaping;
1520

    
1521
    /**
1522
     * Thread count.
1523
     * is used to decide how many independant tasks should be passed to execute()
1524
     * - encoding: set by user
1525
     * - decoding: set by user
1526
     */
1527
    int thread_count;
1528
    
1529
    /**
1530
     * the codec may call this to execute several independant things. it will return only after
1531
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1532
     * default implementation will execute the parts serially
1533
     * @param count the number of functions this will be identical to thread_count if possible
1534
     * - encoding: set by lavc, user can override
1535
     * - decoding: set by lavc, user can override
1536
     */
1537
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1538
    
1539
    /**
1540
     * Thread opaque.
1541
     * can be used by execute() to store some per AVCodecContext stuff.
1542
     * - encoding: set by execute()
1543
     * - decoding: set by execute()
1544
     */
1545
    void *thread_opaque;
1546
} AVCodecContext;
1547

    
1548

    
1549
/**
1550
 * AVOption.
1551
 */
1552
typedef struct AVOption {
1553
    /** options' name */
1554
    const char *name; /* if name is NULL, it indicates a link to next */
1555
    /** short English text help or const struct AVOption* subpointer */
1556
    const char *help; //        const struct AVOption* sub;
1557
    /** offset to context structure where the parsed value should be stored */
1558
    int offset;
1559
    /** options' type */
1560
    int type;
1561
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1562
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1563
#define FF_OPT_TYPE_INT 3       ///< integer
1564
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1565
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1566
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1567
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1568
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1569
    /** min value  (min == max   ->  no limits) */
1570
    double min;
1571
    /** maximum value for double/int */
1572
    double max;
1573
    /** default boo [0,1]l/double/int value */
1574
    double defval;
1575
    /**
1576
     * default string value (with optional semicolon delimited extra option-list
1577
     * i.e.   option1;option2;option3
1578
     * defval might select other then first argument as default
1579
     */
1580
    const char *defstr;
1581
#define FF_OPT_MAX_DEPTH 10
1582
} AVOption;
1583

    
1584
/**
1585
 * Parse option(s) and sets fields in passed structure
1586
 * @param strct        structure where the parsed results will be written
1587
 * @param list  list with AVOptions
1588
 * @param opts        string with options for parsing
1589
 */
1590
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1591

    
1592

    
1593
/**
1594
 * AVCodec.
1595
 */
1596
typedef struct AVCodec {
1597
    const char *name;
1598
    enum CodecType type;
1599
    int id;
1600
    int priv_data_size;
1601
    int (*init)(AVCodecContext *);
1602
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1603
    int (*close)(AVCodecContext *);
1604
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1605
                  uint8_t *buf, int buf_size);
1606
    int capabilities;
1607
    const AVOption *options;
1608
    struct AVCodec *next;
1609
    void (*flush)(AVCodecContext *);
1610
    AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1611
} AVCodec;
1612

    
1613
/**
1614
 * four components are given, that's all.
1615
 * the last component is alpha
1616
 */
1617
typedef struct AVPicture {
1618
    uint8_t *data[4];
1619
    int linesize[4];       ///< number of bytes per line
1620
} AVPicture;
1621

    
1622
/**
1623
 * AVPaletteControl
1624
 * This structure defines a method for communicating palette changes
1625
 * between and demuxer and a decoder.
1626
 */
1627
#define AVPALETTE_SIZE 1024
1628
#define AVPALETTE_COUNT 256
1629
typedef struct AVPaletteControl {
1630

    
1631
    /* demuxer sets this to 1 to indicate the palette has changed;
1632
     * decoder resets to 0 */
1633
    int palette_changed;
1634

    
1635
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1636
     * the individual palette components should be on a 8-bit scale; if
1637
     * the palette data comes from a IBM VGA native format, the component
1638
     * data is probably 6 bits in size and needs to be scaled */
1639
    unsigned int palette[AVPALETTE_COUNT];
1640

    
1641
} AVPaletteControl;
1642

    
1643
extern AVCodec ac3_encoder;
1644
extern AVCodec mp2_encoder;
1645
extern AVCodec mp3lame_encoder;
1646
extern AVCodec oggvorbis_encoder;
1647
extern AVCodec faac_encoder;
1648
extern AVCodec mpeg1video_encoder;
1649
extern AVCodec mpeg2video_encoder;
1650
extern AVCodec h263_encoder;
1651
extern AVCodec h263p_encoder;
1652
extern AVCodec flv_encoder;
1653
extern AVCodec rv10_encoder;
1654
extern AVCodec rv20_encoder;
1655
extern AVCodec mjpeg_encoder;
1656
extern AVCodec ljpeg_encoder;
1657
extern AVCodec mpeg4_encoder;
1658
extern AVCodec msmpeg4v1_encoder;
1659
extern AVCodec msmpeg4v2_encoder;
1660
extern AVCodec msmpeg4v3_encoder;
1661
extern AVCodec wmv1_encoder;
1662
extern AVCodec wmv2_encoder;
1663
extern AVCodec huffyuv_encoder;
1664
extern AVCodec h264_encoder;
1665
extern AVCodec asv1_encoder;
1666
extern AVCodec asv2_encoder;
1667
extern AVCodec vcr1_encoder;
1668
extern AVCodec ffv1_encoder;
1669
extern AVCodec mdec_encoder;
1670
extern AVCodec zlib_encoder;
1671

    
1672
extern AVCodec h263_decoder;
1673
extern AVCodec mpeg4_decoder;
1674
extern AVCodec msmpeg4v1_decoder;
1675
extern AVCodec msmpeg4v2_decoder;
1676
extern AVCodec msmpeg4v3_decoder;
1677
extern AVCodec wmv1_decoder;
1678
extern AVCodec wmv2_decoder;
1679
extern AVCodec mpeg1video_decoder;
1680
extern AVCodec mpeg2video_decoder;
1681
extern AVCodec mpegvideo_decoder;
1682
extern AVCodec mpeg_xvmc_decoder;
1683
extern AVCodec h263i_decoder;
1684
extern AVCodec flv_decoder;
1685
extern AVCodec rv10_decoder;
1686
extern AVCodec rv20_decoder;
1687
extern AVCodec svq1_decoder;
1688
extern AVCodec svq3_decoder;
1689
extern AVCodec dvvideo_decoder;
1690
extern AVCodec wmav1_decoder;
1691
extern AVCodec wmav2_decoder;
1692
extern AVCodec mjpeg_decoder;
1693
extern AVCodec mjpegb_decoder;
1694
extern AVCodec sp5x_decoder;
1695
extern AVCodec mp2_decoder;
1696
extern AVCodec mp3_decoder;
1697
extern AVCodec mace3_decoder;
1698
extern AVCodec mace6_decoder;
1699
extern AVCodec huffyuv_decoder;
1700
extern AVCodec oggvorbis_decoder;
1701
extern AVCodec cyuv_decoder;
1702
extern AVCodec h264_decoder;
1703
extern AVCodec indeo3_decoder;
1704
extern AVCodec vp3_decoder;
1705
extern AVCodec theora_decoder;
1706
extern AVCodec amr_nb_decoder;
1707
extern AVCodec amr_nb_encoder;
1708
extern AVCodec amr_wb_encoder;
1709
extern AVCodec amr_wb_decoder;
1710
extern AVCodec aac_decoder;
1711
extern AVCodec mpeg4aac_decoder;
1712
extern AVCodec asv1_decoder;
1713
extern AVCodec asv2_decoder;
1714
extern AVCodec vcr1_decoder;
1715
extern AVCodec cljr_decoder;
1716
extern AVCodec ffv1_decoder;
1717
extern AVCodec fourxm_decoder;
1718
extern AVCodec mdec_decoder;
1719
extern AVCodec roq_decoder;
1720
extern AVCodec interplay_video_decoder;
1721
extern AVCodec xan_wc3_decoder;
1722
extern AVCodec rpza_decoder;
1723
extern AVCodec cinepak_decoder;
1724
extern AVCodec msrle_decoder;
1725
extern AVCodec msvideo1_decoder;
1726
extern AVCodec vqa_decoder;
1727
extern AVCodec idcin_decoder;
1728
extern AVCodec eightbps_decoder;
1729
extern AVCodec smc_decoder;
1730
extern AVCodec flic_decoder;
1731
extern AVCodec vmdvideo_decoder;
1732
extern AVCodec vmdaudio_decoder;
1733
extern AVCodec truemotion1_decoder;
1734
extern AVCodec mszh_decoder;
1735
extern AVCodec zlib_decoder;
1736
extern AVCodec ra_144_decoder;
1737
extern AVCodec ra_288_decoder;
1738
extern AVCodec roq_dpcm_decoder;
1739
extern AVCodec interplay_dpcm_decoder;
1740
extern AVCodec xan_dpcm_decoder;
1741
extern AVCodec qtrle_decoder;
1742
extern AVCodec flac_decoder;
1743

    
1744
/* pcm codecs */
1745
#define PCM_CODEC(id, name) \
1746
extern AVCodec name ## _decoder; \
1747
extern AVCodec name ## _encoder
1748

    
1749
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1750
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1751
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1752
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1753
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1754
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1755
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1756
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1757

    
1758
/* adpcm codecs */
1759

    
1760
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1761
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1762
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1763
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1764
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1765
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1766
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1767
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1768
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1769
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1770
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1771
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1772

    
1773
#undef PCM_CODEC
1774

    
1775
/* dummy raw video codec */
1776
extern AVCodec rawvideo_encoder;
1777
extern AVCodec rawvideo_decoder;
1778

    
1779
/* the following codecs use external GPL libs */
1780
extern AVCodec ac3_decoder;
1781

    
1782
/* resample.c */
1783

    
1784
struct ReSampleContext;
1785

    
1786
typedef struct ReSampleContext ReSampleContext;
1787

    
1788
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1789
                                     int output_rate, int input_rate);
1790
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1791
void audio_resample_close(ReSampleContext *s);
1792

    
1793
/* YUV420 format is assumed ! */
1794

    
1795
struct ImgReSampleContext;
1796

    
1797
typedef struct ImgReSampleContext ImgReSampleContext;
1798

    
1799
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1800
                                      int input_width, int input_height);
1801

    
1802
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1803
                                      int iwidth, int iheight,
1804
                                      int topBand, int bottomBand,
1805
                                      int leftBand, int rightBand);
1806

    
1807
void img_resample(ImgReSampleContext *s, 
1808
                  AVPicture *output, const AVPicture *input);
1809

    
1810
void img_resample_close(ImgReSampleContext *s);
1811

    
1812
/**
1813
 * Allocate memory for a picture.  Call avpicture_free to free it.
1814
 *
1815
 * @param picture the picture to be filled in.
1816
 * @param pix_fmt the format of the picture.
1817
 * @param width the width of the picture.
1818
 * @param height the height of the picture.
1819
 * @return 0 if successful, -1 if not.
1820
 */
1821
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1822

    
1823
/* Free a picture previously allocated by avpicture_alloc. */
1824
void avpicture_free(AVPicture *picture);
1825

    
1826
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1827
                   int pix_fmt, int width, int height);
1828
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1829
                     unsigned char *dest, int dest_size);
1830
int avpicture_get_size(int pix_fmt, int width, int height);
1831
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1832
const char *avcodec_get_pix_fmt_name(int pix_fmt);
1833
enum PixelFormat avcodec_get_pix_fmt(const char* name);
1834

    
1835
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
1836
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
1837
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
1838
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
1839
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
1840
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1841

    
1842
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1843
                             int has_alpha);
1844
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1845
                              int has_alpha, int *loss_ptr);
1846

    
1847
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
1848
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
1849
int img_get_alpha_info(const AVPicture *src,
1850
                       int pix_fmt, int width, int height);
1851

    
1852
/* convert among pixel formats */
1853
int img_convert(AVPicture *dst, int dst_pix_fmt,
1854
                const AVPicture *src, int pix_fmt, 
1855
                int width, int height);
1856

    
1857
/* deinterlace a picture */
1858
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1859
                          int pix_fmt, int width, int height);
1860

    
1861
/* external high level API */
1862

    
1863
extern AVCodec *first_avcodec;
1864

    
1865
/* returns LIBAVCODEC_VERSION_INT constant */
1866
unsigned avcodec_version(void);
1867
/* returns LIBAVCODEC_BUILD constant */
1868
unsigned avcodec_build(void);
1869
void avcodec_init(void);
1870

    
1871
void register_avcodec(AVCodec *format);
1872
AVCodec *avcodec_find_encoder(enum CodecID id);
1873
AVCodec *avcodec_find_encoder_by_name(const char *name);
1874
AVCodec *avcodec_find_decoder(enum CodecID id);
1875
AVCodec *avcodec_find_decoder_by_name(const char *name);
1876
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1877

    
1878
void avcodec_get_context_defaults(AVCodecContext *s);
1879
AVCodecContext *avcodec_alloc_context(void);
1880
AVFrame *avcodec_alloc_frame(void);
1881

    
1882
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1883
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1884
void avcodec_default_free_buffers(AVCodecContext *s);
1885

    
1886
int avcodec_thread_init(AVCodecContext *s, int thread_count);
1887
void avcodec_thread_free(AVCodecContext *s);
1888
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
1889
//FIXME func typedef
1890

    
1891
/**
1892
 * opens / inits the AVCodecContext.
1893
 * not thread save!
1894
 */
1895
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1896

    
1897
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
1898
                         int *frame_size_ptr,
1899
                         uint8_t *buf, int buf_size);
1900
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
1901
                         int *got_picture_ptr,
1902
                         uint8_t *buf, int buf_size);
1903
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
1904
                        int *data_size_ptr,
1905
                        uint8_t *buf, int buf_size);
1906
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1907
                         const short *samples);
1908
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1909
                         const AVFrame *pict);
1910

    
1911
int avcodec_close(AVCodecContext *avctx);
1912

    
1913
void avcodec_register_all(void);
1914

    
1915
void avcodec_flush_buffers(AVCodecContext *avctx);
1916

    
1917
/* misc usefull functions */
1918

    
1919
/**
1920
 * returns a single letter to describe the picture type
1921
 */
1922
char av_get_pict_type_char(int pict_type);
1923

    
1924
/**
1925
 * reduce a fraction.
1926
 * this is usefull for framerate calculations
1927
 * @param max the maximum allowed for dst_nom & dst_den
1928
 * @return 1 if exact, 0 otherwise
1929
 */
1930
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1931

    
1932
/**
1933
 * rescale a 64bit integer.
1934
 * a simple a*b/c isnt possible as it can overflow
1935
 */
1936
int64_t av_rescale(int64_t a, int b, int c);
1937

    
1938

    
1939
/**
1940
 * Interface for 0.5.0 version
1941
 *
1942
 * do not even think about it's usage for this moment
1943
 */
1944

    
1945
typedef struct {
1946
    /// compressed size used from given memory buffer
1947
    int size;
1948
    /// I/P/B frame type
1949
    int frame_type;
1950
} avc_enc_result_t;
1951

    
1952
/**
1953
 * Commands
1954
 * order can't be changed - once it was defined
1955
 */
1956
typedef enum {
1957
    // general commands
1958
    AVC_OPEN_BY_NAME = 0xACA000,
1959
    AVC_OPEN_BY_CODEC_ID,
1960
    AVC_OPEN_BY_FOURCC,
1961
    AVC_CLOSE,
1962

    
1963
    AVC_FLUSH,
1964
    // pin - struct { uint8_t* src, uint_t src_size }
1965
    // pout - struct { AVPicture* img, consumed_bytes,
1966
    AVC_DECODE,
1967
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1968
    // pout - uint_t used_from_dest_size
1969
    AVC_ENCODE, 
1970

    
1971
    // query/get video commands
1972
    AVC_GET_VERSION = 0xACB000,
1973
    AVC_GET_WIDTH,
1974
    AVC_GET_HEIGHT,
1975
    AVC_GET_DELAY,
1976
    AVC_GET_QUANT_TABLE,
1977
    // ...
1978

    
1979
    // query/get audio commands
1980
    AVC_GET_FRAME_SIZE = 0xABC000,
1981

    
1982
    // maybe define some simple structure which
1983
    // might be passed to the user - but they can't
1984
    // contain any codec specific parts and these
1985
    // calls are usualy necessary only few times
1986

    
1987
    // set video commands
1988
    AVC_SET_WIDTH = 0xACD000,
1989
    AVC_SET_HEIGHT,
1990

    
1991
    // set video encoding commands
1992
    AVC_SET_FRAME_RATE = 0xACD800,
1993
    AVC_SET_QUALITY,
1994
    AVC_SET_HURRY_UP,
1995

    
1996
    // set audio commands
1997
    AVC_SET_SAMPLE_RATE = 0xACE000,
1998
    AVC_SET_CHANNELS,
1999

    
2000
} avc_cmd_t;
2001

    
2002
/**
2003
 * \param handle  allocated private structure by libavcodec
2004
 *                for initialization pass NULL - will be returned pout
2005
 *                user is supposed to know nothing about its structure
2006
 * \param cmd     type of operation to be performed
2007
 * \param pint    input parameter
2008
 * \param pout    output parameter
2009
 *
2010
 * \returns  command status - eventually for query command it might return
2011
 * integer resulting value
2012
 */
2013
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2014

    
2015
/* frame parsing */
2016
typedef struct AVCodecParserContext {
2017
    void *priv_data;
2018
    struct AVCodecParser *parser;
2019
    int64_t frame_offset; /* offset of the current frame */
2020
    int64_t cur_offset; /* current offset 
2021
                           (incremented by each av_parser_parse()) */
2022
    int64_t last_frame_offset; /* offset of the last frame */
2023
    /* video info */
2024
    int pict_type; /* XXX: put it back in AVCodecContext */
2025
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2026
    int64_t pts;     /* pts of the current frame */
2027
    int64_t dts;     /* dts of the current frame */
2028

    
2029
    /* private data */
2030
    int64_t last_pts;
2031
    int64_t last_dts;
2032

    
2033
#define AV_PARSER_PTS_NB 4
2034
    int cur_frame_start_index;
2035
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2036
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2037
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2038
} AVCodecParserContext;
2039

    
2040
typedef struct AVCodecParser {
2041
    int codec_ids[3]; /* several codec IDs are permitted */
2042
    int priv_data_size;
2043
    int (*parser_init)(AVCodecParserContext *s);
2044
    int (*parser_parse)(AVCodecParserContext *s, 
2045
                        AVCodecContext *avctx,
2046
                        uint8_t **poutbuf, int *poutbuf_size, 
2047
                        const uint8_t *buf, int buf_size);
2048
    void (*parser_close)(AVCodecParserContext *s);
2049
    struct AVCodecParser *next;
2050
} AVCodecParser;
2051

    
2052
extern AVCodecParser *av_first_parser;
2053

    
2054
void av_register_codec_parser(AVCodecParser *parser);
2055
AVCodecParserContext *av_parser_init(int codec_id);
2056
int av_parser_parse(AVCodecParserContext *s, 
2057
                    AVCodecContext *avctx,
2058
                    uint8_t **poutbuf, int *poutbuf_size, 
2059
                    const uint8_t *buf, int buf_size,
2060
                    int64_t pts, int64_t dts);
2061
void av_parser_close(AVCodecParserContext *s);
2062

    
2063
extern AVCodecParser mpegvideo_parser;
2064
extern AVCodecParser mpeg4video_parser;
2065
extern AVCodecParser h263_parser;
2066
extern AVCodecParser h264_parser;
2067
extern AVCodecParser mpegaudio_parser;
2068
extern AVCodecParser ac3_parser;
2069

    
2070
/* memory */
2071
void *av_malloc(unsigned int size);
2072
void *av_mallocz(unsigned int size);
2073
void *av_realloc(void *ptr, unsigned int size);
2074
void av_free(void *ptr);
2075
char *av_strdup(const char *s);
2076
void __av_freep(void **ptr);
2077
#define av_freep(p) __av_freep((void **)(p))
2078
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2079
/* for static data only */
2080
/* call av_free_static to release all staticaly allocated tables */
2081
void av_free_static(void);
2082
void *__av_mallocz_static(void** location, unsigned int size);
2083
#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
2084

    
2085
/* add by bero : in adx.c */
2086
int is_adx(const unsigned char *buf,size_t bufsize);
2087

    
2088
void img_copy(AVPicture *dst, const AVPicture *src,
2089
              int pix_fmt, int width, int height);
2090

    
2091
/* av_log API */
2092

    
2093
#include <stdarg.h>
2094

    
2095
#define AV_LOG_ERROR 0
2096
#define AV_LOG_INFO 1
2097
#define AV_LOG_DEBUG 2
2098

    
2099
extern void av_log(AVCodecContext*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2100
extern void av_vlog(AVCodecContext*, int level, const char *fmt, va_list);
2101
extern int av_log_get_level(void);
2102
extern void av_log_set_level(int);
2103
extern void av_log_set_callback(void (*)(AVCodecContext*, int, const char*, va_list));
2104

    
2105
#undef  AV_LOG_TRAP_PRINTF
2106
#ifdef AV_LOG_TRAP_PRINTF
2107
#define printf DO NOT USE
2108
#define fprintf DO NOT USE
2109
#undef stderr
2110
#define stderr DO NOT USE
2111
#endif
2112

    
2113
#ifdef __cplusplus
2114
}
2115
#endif
2116

    
2117
#endif /* AVCODEC_H */