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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       4710
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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.
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     * - 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
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     */
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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.
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     * - 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];
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}AVPanScan;
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#define FF_COMMON_FRAME \
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    /**\
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     * pointer to the picture planes.\
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     * this might be different from the first allocated byte\
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     * - encoding: \
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     * - 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\
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     * 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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     */\
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    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)\
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     * 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\
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     */\
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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\
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     * - 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\
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     */\
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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
     */\
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    int quality; \
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\
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    /**\
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
     */\
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    int age;\
414
\
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    /**\
416
     * is this picture used as reference\
417
     * - encoding: unused\
418
     * - decoding: set by lavc (before get_buffer() call))\
419
     */\
420
    int reference;\
421
\
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    /**\
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;\
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\
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    /**\
444
     * Motion vector table\
445
     * - encoding: set by user\
446
     * - decoding: set by lavc\
447
     */\
448
    int16_t (*motion_val[2])[2];\
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\
450
    /**\
451
     * Macroblock type table\
452
     * mb_type_base + mb_width + 2\
453
     * - encoding: set by user\
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\
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     */\
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
    \
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    /**\
515
     * Pan scan.\
516
     * - encoding: set by user\
517
     * - decoding: set by lavc\
518
     */\
519
    AVPanScan *pan_scan;\
520
    \
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    /**\
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
    \
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    /**\
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
    /**\
543
     * Motion referece frame index\
544
     * - encoding: set by user\
545
     * - decoding: set by lavc\
546
     */\
547
    int8_t *ref_index[2];
548

    
549
#define FF_QSCALE_TYPE_MPEG1        0
550
#define FF_QSCALE_TYPE_MPEG2        1
551

    
552
#define FF_BUFFER_TYPE_INTERNAL 1
553
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
554
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
555
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
556

    
557

    
558
#define FF_I_TYPE 1 // Intra
559
#define FF_P_TYPE 2 // Predicted
560
#define FF_B_TYPE 3 // Bi-dir predicted
561
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
562
#define FF_SI_TYPE 5
563
#define FF_SP_TYPE 6
564

    
565
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
566
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
567
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
568
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
569

    
570
/**
571
 * Audio Video Frame.
572
 */
573
typedef struct AVFrame {
574
    FF_COMMON_FRAME
575
} AVFrame;
576

    
577
#define DEFAULT_FRAME_RATE_BASE 1001000
578

    
579
/**
580
 * Used by av_log
581
 */
582
typedef struct AVCLASS AVClass;
583
struct AVCLASS {
584
    const char* class_name;
585
    const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
586
                                        or AVFormatContext, which begin with an AVClass.
587
                                        Needed because av_log is in libavcodec and has no visibility
588
                                        of AVIn/OutputFormat */
589
};
590

    
591
/**
592
 * main external api structure.
593
 */
594
typedef struct AVCodecContext {
595
    /**
596
     * Info on struct for av_log
597
     * - set by avcodec_alloc_context
598
     */
599
    AVClass *av_class;
600
    /**
601
     * the average bitrate.
602
     * - encoding: set by user. unused for constant quantizer encoding
603
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
604
     */
605
    int bit_rate;
606

    
607
    /**
608
     * number of bits the bitstream is allowed to diverge from the reference.
609
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
610
     * - encoding: set by user. unused for constant quantizer encoding
611
     * - decoding: unused
612
     */
613
    int bit_rate_tolerance; 
614

    
615
    /**
616
     * CODEC_FLAG_*.
617
     * - encoding: set by user.
618
     * - decoding: set by user.
619
     */
620
    int flags;
621

    
622
    /**
623
     * some codecs needs additionnal format info. It is stored here
624
     * - encoding: set by user. 
625
     * - decoding: set by lavc. (FIXME is this ok?)
626
     */
627
    int sub_id;
628

    
629
    /**
630
     * motion estimation algorithm used for video coding.
631
     * - encoding: MUST be set by user.
632
     * - decoding: unused
633
     */
634
    int me_method;
635

    
636
    /**
637
     * some codecs need / can use extra-data like huffman tables.
638
     * mjpeg: huffman tables
639
     * rv10: additional flags
640
     * mpeg4: global headers (they can be in the bitstream or here)
641
     * - encoding: set/allocated/freed by lavc.
642
     * - decoding: set/allocated/freed by user.
643
     */
644
    void *extradata;
645
    int extradata_size;
646
    
647
    /* video only */
648
    /**
649
     * frames per sec multiplied by frame_rate_base.
650
     * for variable fps this is the precission, so if the timestamps 
651
     * can be specified in msec precssion then this is 1000*frame_rate_base
652
     * - encoding: MUST be set by user
653
     * - decoding: set by lavc. 0 or the frame_rate if available
654
     */
655
    int frame_rate;
656
    
657
    /**
658
     * width / height.
659
     * - encoding: MUST be set by user. 
660
     * - decoding: set by user if known, codec should override / dynamically change if needed
661
     */
662
    int width, height;
663
    
664
#define FF_ASPECT_EXTENDED 15
665

    
666
    /**
667
     * the number of pictures in a group of pitures, or 0 for intra_only.
668
     * - encoding: set by user.
669
     * - decoding: unused
670
     */
671
    int gop_size;
672

    
673
    /**
674
     * pixel format, see PIX_FMT_xxx.
675
     * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
676
     *                    conversion is in order. This only works for
677
     *                    codecs with one supported pix_fmt, we should
678
     *                    do something for a generic case as well.
679
     * - decoding: set by lavc.
680
     */
681
    enum PixelFormat pix_fmt;
682
 
683
    /**
684
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
685
     * has to read frames at native frame rate.
686
     * - encoding: set by user.
687
     * - decoding: unused.
688
     */
689
    int rate_emu;
690
       
691
    /**
692
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
693
     * decoder to draw an horizontal band. It improve cache usage. Not
694
     * all codecs can do that. You must check the codec capabilities
695
     * before
696
     * - encoding: unused
697
     * - decoding: set by user.
698
     * @param height the height of the slice
699
     * @param y the y position of the slice
700
     * @param type 1->top field, 2->bottom field, 3->frame
701
     * @param offset offset into the AVFrame.data from which the slice should be read
702
     */
703
    void (*draw_horiz_band)(struct AVCodecContext *s,
704
                            const AVFrame *src, int offset[4],
705
                            int y, int type, int height);
706

    
707
    /* audio only */
708
    int sample_rate; ///< samples per sec 
709
    int channels;
710
    int sample_fmt;  ///< sample format, currenly unused 
711

    
712
    /* the following data should not be initialized */
713
    int frame_size;     ///< in samples, initialized when calling 'init' 
714
    int frame_number;   ///< audio or video frame number 
715
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
716
    
717
    /**
718
     * number of frames the decoded output will be delayed relative to 
719
     * the encoded input.
720
     * - encoding: set by lavc.
721
     * - decoding: unused
722
     */
723
    int delay;
724
    
725
    /* - encoding parameters */
726
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
727
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
728
    
729
    /**
730
     * minimum quantizer.
731
     * - encoding: set by user.
732
     * - decoding: unused
733
     */
734
    int qmin;
735

    
736
    /**
737
     * maximum quantizer.
738
     * - encoding: set by user.
739
     * - decoding: unused
740
     */
741
    int qmax;
742

    
743
    /**
744
     * maximum quantizer difference etween frames.
745
     * - encoding: set by user.
746
     * - decoding: unused
747
     */
748
    int max_qdiff;
749

    
750
    /**
751
     * maximum number of b frames between non b frames.
752
     * note: the output will be delayed by max_b_frames+1 relative to the input
753
     * - encoding: set by user.
754
     * - decoding: unused
755
     */
756
    int max_b_frames;
757

    
758
    /**
759
     * qscale factor between ip and b frames.
760
     * - encoding: set by user.
761
     * - decoding: unused
762
     */
763
    float b_quant_factor;
764
    
765
    /** obsolete FIXME remove */
766
    int rc_strategy;
767
    int b_frame_strategy;
768

    
769
    /**
770
     * hurry up amount.
771
     * - encoding: unused
772
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
773
     */
774
    int hurry_up;
775
    
776
    struct AVCodec *codec;
777
    
778
    void *priv_data;
779

    
780
    /* unused, FIXME remove*/
781
    int rtp_mode;
782
    
783
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
784
                            /* do it's best to deliver a chunk with size    */
785
                            /* below rtp_payload_size, the chunk will start */
786
                            /* with a start code on some codecs like H.263  */
787
                            /* This doesn't take account of any particular  */
788
                            /* headers inside the transmited RTP payload    */
789

    
790
    
791
    /* The RTP callcack: This function is called  */
792
    /* every time the encoder as a packet to send */
793
    /* Depends on the encoder if the data starts  */
794
    /* with a Start Code (it should) H.263 does   */
795
    void (*rtp_callback)(void *data, int size, int packet_number); 
796

    
797
    /* statistics, used for 2-pass encoding */
798
    int mv_bits;
799
    int header_bits;
800
    int i_tex_bits;
801
    int p_tex_bits;
802
    int i_count;
803
    int p_count;
804
    int skip_count;
805
    int misc_bits;
806
    
807
    /**
808
     * number of bits used for the previously encoded frame.
809
     * - encoding: set by lavc
810
     * - decoding: unused
811
     */
812
    int frame_bits;
813

    
814
    /**
815
     * private data of the user, can be used to carry app specific stuff.
816
     * - encoding: set by user
817
     * - decoding: set by user
818
     */
819
    void *opaque;
820

    
821
    char codec_name[32];
822
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
823
    enum CodecID codec_id; /* see CODEC_ID_xxx */
824
    
825
    /**
826
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
827
     * this is used to workaround some encoder bugs
828
     * - encoding: set by user, if not then the default based on codec_id will be used
829
     * - decoding: set by user, will be converted to upper case by lavc during init
830
     */
831
    unsigned int codec_tag;
832
    
833
    /**
834
     * workaround bugs in encoders which sometimes cannot be detected automatically.
835
     * - encoding: unused
836
     * - decoding: set by user
837
     */
838
    int workaround_bugs;
839
#define FF_BUG_AUTODETECT       1  ///< autodetection
840
#define FF_BUG_OLD_MSMPEG4      2
841
#define FF_BUG_XVID_ILACE       4
842
#define FF_BUG_UMP4             8
843
#define FF_BUG_NO_PADDING       16
844
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
845
#define FF_BUG_QPEL_CHROMA      64
846
#define FF_BUG_STD_QPEL         128
847
#define FF_BUG_QPEL_CHROMA2     256
848
#define FF_BUG_DIRECT_BLOCKSIZE 512
849
#define FF_BUG_EDGE             1024
850
#define FF_BUG_HPEL_CHROMA      2048
851
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
852
        
853
    /**
854
     * luma single coeff elimination threshold.
855
     * - encoding: set by user
856
     * - decoding: unused
857
     */
858
    int luma_elim_threshold;
859
    
860
    /**
861
     * chroma single coeff elimination threshold.
862
     * - encoding: set by user
863
     * - decoding: unused
864
     */
865
    int chroma_elim_threshold;
866
    
867
    /**
868
     * strictly follow the std (MPEG4, ...).
869
     * - encoding: set by user
870
     * - decoding: unused
871
     */
872
    int strict_std_compliance;
873
    
874
    /**
875
     * qscale offset between ip and b frames.
876
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
877
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
878
     * - encoding: set by user.
879
     * - decoding: unused
880
     */
881
    float b_quant_offset;
882
    
883
    /**
884
     * error resilience higher values will detect more errors but may missdetect
885
     * some more or less valid parts as errors.
886
     * - encoding: unused
887
     * - decoding: set by user
888
     */
889
    int error_resilience;
890
#define FF_ER_CAREFULL        1
891
#define FF_ER_COMPLIANT       2
892
#define FF_ER_AGGRESSIVE      3
893
#define FF_ER_VERY_AGGRESSIVE 4
894
    
895
    /**
896
     * called at the beginning of each frame to get a buffer for it.
897
     * if pic.reference is set then the frame will be read later by lavc
898
     * width and height should be rounded up to the next multiple of 16
899
     * - encoding: unused
900
     * - decoding: set by lavc, user can override
901
     */
902
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
903
    
904
    /**
905
     * called to release buffers which where allocated with get_buffer.
906
     * a released buffer can be reused in get_buffer()
907
     * pic.data[*] must be set to NULL
908
     * - encoding: unused
909
     * - decoding: set by lavc, user can override
910
     */
911
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
912

    
913
    /**
914
     * is 1 if the decoded stream contains b frames, 0 otherwise.
915
     * - encoding: unused
916
     * - decoding: set by lavc
917
     */
918
    int has_b_frames;
919
    
920
    int block_align; ///< used by some WAV based audio codecs
921
    
922
    int parse_only; /* - decoding only: if true, only parsing is done
923
                       (function avcodec_parse_frame()). The frame
924
                       data is returned. Only MPEG codecs support this now. */
925
    
926
    /**
927
     * 0-> h263 quant 1-> mpeg quant.
928
     * - encoding: set by user.
929
     * - decoding: unused
930
     */
931
    int mpeg_quant;
932
    
933
    /**
934
     * pass1 encoding statistics output buffer.
935
     * - encoding: set by lavc
936
     * - decoding: unused
937
     */
938
    char *stats_out;
939
    
940
    /**
941
     * pass2 encoding statistics input buffer.
942
     * concatenated stuff from stats_out of pass1 should be placed here
943
     * - encoding: allocated/set/freed by user
944
     * - decoding: unused
945
     */
946
    char *stats_in;
947
    
948
    /**
949
     * ratecontrol qmin qmax limiting method.
950
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
951
     * - encoding: set by user.
952
     * - decoding: unused
953
     */
954
    float rc_qsquish;
955

    
956
    float rc_qmod_amp;
957
    int rc_qmod_freq;
958
    
959
    /**
960
     * ratecontrol override, see RcOverride.
961
     * - encoding: allocated/set/freed by user.
962
     * - decoding: unused
963
     */
964
    RcOverride *rc_override;
965
    int rc_override_count;
966
    
967
    /**
968
     * rate control equation.
969
     * - encoding: set by user
970
     * - decoding: unused
971
     */
972
    char *rc_eq;
973
    
974
    /**
975
     * maximum bitrate.
976
     * - encoding: set by user.
977
     * - decoding: unused
978
     */
979
    int rc_max_rate;
980
    
981
    /**
982
     * minimum bitrate.
983
     * - encoding: set by user.
984
     * - decoding: unused
985
     */
986
    int rc_min_rate;
987
    
988
    /**
989
     * decoder bitstream buffer size.
990
     * - encoding: set by user.
991
     * - decoding: unused
992
     */
993
    int rc_buffer_size;
994
    float rc_buffer_aggressivity;
995

    
996
    /**
997
     * qscale factor between p and i frames.
998
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
999
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1000
     * - encoding: set by user.
1001
     * - decoding: unused
1002
     */
1003
    float i_quant_factor;
1004
    
1005
    /**
1006
     * qscale offset between p and i frames.
1007
     * - encoding: set by user.
1008
     * - decoding: unused
1009
     */
1010
    float i_quant_offset;
1011
    
1012
    /**
1013
     * initial complexity for pass1 ratecontrol.
1014
     * - encoding: set by user.
1015
     * - decoding: unused
1016
     */
1017
    float rc_initial_cplx;
1018

    
1019
    /**
1020
     * dct algorithm, see FF_DCT_* below.
1021
     * - encoding: set by user
1022
     * - decoding: unused
1023
     */
1024
    int dct_algo;
1025
#define FF_DCT_AUTO    0
1026
#define FF_DCT_FASTINT 1
1027
#define FF_DCT_INT     2
1028
#define FF_DCT_MMX     3
1029
#define FF_DCT_MLIB    4
1030
#define FF_DCT_ALTIVEC 5
1031
#define FF_DCT_FAAN    6
1032
    
1033
    /**
1034
     * luminance masking (0-> disabled).
1035
     * - encoding: set by user
1036
     * - decoding: unused
1037
     */
1038
    float lumi_masking;
1039
    
1040
    /**
1041
     * temporary complexity masking (0-> disabled).
1042
     * - encoding: set by user
1043
     * - decoding: unused
1044
     */
1045
    float temporal_cplx_masking;
1046
    
1047
    /**
1048
     * spatial complexity masking (0-> disabled).
1049
     * - encoding: set by user
1050
     * - decoding: unused
1051
     */
1052
    float spatial_cplx_masking;
1053
    
1054
    /**
1055
     * p block masking (0-> disabled).
1056
     * - encoding: set by user
1057
     * - decoding: unused
1058
     */
1059
    float p_masking;
1060

    
1061
    /**
1062
     * darkness masking (0-> disabled).
1063
     * - encoding: set by user
1064
     * - decoding: unused
1065
     */
1066
    float dark_masking;
1067
    
1068
    
1069
    /* for binary compatibility */
1070
    int unused;
1071
    
1072
    /**
1073
     * idct algorithm, see FF_IDCT_* below.
1074
     * - encoding: set by user
1075
     * - decoding: set by user
1076
     */
1077
    int idct_algo;
1078
#define FF_IDCT_AUTO         0
1079
#define FF_IDCT_INT          1
1080
#define FF_IDCT_SIMPLE       2
1081
#define FF_IDCT_SIMPLEMMX    3
1082
#define FF_IDCT_LIBMPEG2MMX  4
1083
#define FF_IDCT_PS2          5
1084
#define FF_IDCT_MLIB         6
1085
#define FF_IDCT_ARM          7
1086
#define FF_IDCT_ALTIVEC      8
1087
#define FF_IDCT_SH4          9
1088
#define FF_IDCT_SIMPLEARM    10
1089

    
1090
    /**
1091
     * slice count.
1092
     * - encoding: set by lavc
1093
     * - decoding: set by user (or 0)
1094
     */
1095
    int slice_count;
1096
    /**
1097
     * slice offsets in the frame in bytes.
1098
     * - encoding: set/allocated by lavc
1099
     * - decoding: set/allocated by user (or NULL)
1100
     */
1101
    int *slice_offset;
1102

    
1103
    /**
1104
     * error concealment flags.
1105
     * - encoding: unused
1106
     * - decoding: set by user
1107
     */
1108
    int error_concealment;
1109
#define FF_EC_GUESS_MVS   1
1110
#define FF_EC_DEBLOCK     2
1111

    
1112
    /**
1113
     * dsp_mask could be add used to disable unwanted CPU features
1114
     * CPU features (i.e. MMX, SSE. ...)
1115
     *
1116
     * with FORCE flag you may instead enable given CPU features
1117
     * (Dangerous: usable in case of misdetection, improper usage however will
1118
     * result into program crash)
1119
     */
1120
    unsigned dsp_mask;
1121
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1122
    /* lower 16 bits - CPU features */
1123
#ifdef HAVE_MMX
1124
#define FF_MM_MMX        0x0001 /* standard MMX */
1125
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1126
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1127
#define FF_MM_SSE        0x0008 /* SSE functions */
1128
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1129
#endif /* HAVE_MMX */
1130

    
1131
    /**
1132
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1133
     * - encoding: set by lavc
1134
     * - decoding: set by user
1135
     */
1136
     int bits_per_sample;
1137
    
1138
    /**
1139
     * prediction method (needed for huffyuv).
1140
     * - encoding: set by user
1141
     * - decoding: unused
1142
     */
1143
     int prediction_method;
1144
#define FF_PRED_LEFT   0
1145
#define FF_PRED_PLANE  1
1146
#define FF_PRED_MEDIAN 2
1147
    
1148
    /**
1149
     * sample aspect ratio (0 if unknown).
1150
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1151
     * - encoding: set by user.
1152
     * - decoding: set by lavc.
1153
     */
1154
    AVRational sample_aspect_ratio;
1155

    
1156
    /**
1157
     * the picture in the bitstream.
1158
     * - encoding: set by lavc
1159
     * - decoding: set by lavc
1160
     */
1161
    AVFrame *coded_frame;
1162

    
1163
    /**
1164
     * debug.
1165
     * - encoding: set by user.
1166
     * - decoding: set by user.
1167
     */
1168
    int debug;
1169
#define FF_DEBUG_PICT_INFO 1
1170
#define FF_DEBUG_RC        2
1171
#define FF_DEBUG_BITSTREAM 4
1172
#define FF_DEBUG_MB_TYPE   8
1173
#define FF_DEBUG_QP        16
1174
#define FF_DEBUG_MV        32
1175
#define FF_DEBUG_DCT_COEFF 0x00000040
1176
#define FF_DEBUG_SKIP      0x00000080
1177
#define FF_DEBUG_STARTCODE 0x00000100
1178
#define FF_DEBUG_PTS       0x00000200
1179
#define FF_DEBUG_ER        0x00000400
1180
#define FF_DEBUG_MMCO      0x00000800
1181
#define FF_DEBUG_BUGS      0x00001000
1182
#define FF_DEBUG_VIS_QP    0x00002000
1183
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1184
    
1185
    /**
1186
     * debug.
1187
     * - encoding: set by user.
1188
     * - decoding: set by user.
1189
     */
1190
    int debug_mv;
1191
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1192
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1193
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1194

    
1195
    /**
1196
     * error.
1197
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1198
     * - decoding: unused
1199
     */
1200
    uint64_t error[4];
1201
    
1202
    /**
1203
     * minimum MB quantizer.
1204
     * - encoding: set by user.
1205
     * - decoding: unused
1206
     */
1207
    int mb_qmin;
1208

    
1209
    /**
1210
     * maximum MB quantizer.
1211
     * - encoding: set by user.
1212
     * - decoding: unused
1213
     */
1214
    int mb_qmax;
1215
    
1216
    /**
1217
     * motion estimation compare function.
1218
     * - encoding: set by user.
1219
     * - decoding: unused
1220
     */
1221
    int me_cmp;
1222
    /**
1223
     * subpixel motion estimation compare function.
1224
     * - encoding: set by user.
1225
     * - decoding: unused
1226
     */
1227
    int me_sub_cmp;
1228
    /**
1229
     * macroblock compare function (not supported yet).
1230
     * - encoding: set by user.
1231
     * - decoding: unused
1232
     */
1233
    int mb_cmp;
1234
    /**
1235
     * interlaced dct compare function
1236
     * - encoding: set by user.
1237
     * - decoding: unused
1238
     */
1239
    int ildct_cmp;
1240
#define FF_CMP_SAD  0
1241
#define FF_CMP_SSE  1
1242
#define FF_CMP_SATD 2
1243
#define FF_CMP_DCT  3
1244
#define FF_CMP_PSNR 4
1245
#define FF_CMP_BIT  5
1246
#define FF_CMP_RD   6
1247
#define FF_CMP_ZERO 7
1248
#define FF_CMP_VSAD 8
1249
#define FF_CMP_VSSE 9
1250
#define FF_CMP_CHROMA 256
1251
    
1252
    /**
1253
     * ME diamond size & shape.
1254
     * - encoding: set by user.
1255
     * - decoding: unused
1256
     */
1257
    int dia_size;
1258

    
1259
    /**
1260
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1261
     * - encoding: set by user.
1262
     * - decoding: unused
1263
     */
1264
    int last_predictor_count;
1265

    
1266
    /**
1267
     * pre pass for motion estimation.
1268
     * - encoding: set by user.
1269
     * - decoding: unused
1270
     */
1271
    int pre_me;
1272

    
1273
    /**
1274
     * motion estimation pre pass compare function.
1275
     * - encoding: set by user.
1276
     * - decoding: unused
1277
     */
1278
    int me_pre_cmp;
1279

    
1280
    /**
1281
     * ME pre pass diamond size & shape.
1282
     * - encoding: set by user.
1283
     * - decoding: unused
1284
     */
1285
    int pre_dia_size;
1286

    
1287
    /**
1288
     * subpel ME quality.
1289
     * - encoding: set by user.
1290
     * - decoding: unused
1291
     */
1292
    int me_subpel_quality;
1293

    
1294
    /**
1295
     * callback to negotiate the pixelFormat.
1296
     * @param fmt is the list of formats which are supported by the codec,
1297
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1298
     * the first is allways the native one
1299
     * @return the choosen format
1300
     * - encoding: unused
1301
     * - decoding: set by user, if not set then the native format will always be choosen
1302
     */
1303
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1304

    
1305
    /**
1306
     * DTG active format information (additionnal aspect ratio
1307
     * information only used in DVB MPEG2 transport streams). 0 if
1308
     * not set.
1309
     * 
1310
     * - encoding: unused.
1311
     * - decoding: set by decoder 
1312
     */
1313
    int dtg_active_format;
1314
#define FF_DTG_AFD_SAME         8
1315
#define FF_DTG_AFD_4_3          9
1316
#define FF_DTG_AFD_16_9         10
1317
#define FF_DTG_AFD_14_9         11
1318
#define FF_DTG_AFD_4_3_SP_14_9  13
1319
#define FF_DTG_AFD_16_9_SP_14_9 14
1320
#define FF_DTG_AFD_SP_4_3       15
1321

    
1322
    /**
1323
     * Maximum motion estimation search range in subpel units.
1324
     * if 0 then no limit
1325
     * 
1326
     * - encoding: set by user.
1327
     * - decoding: unused.
1328
     */
1329
    int me_range;
1330

    
1331
    /**
1332
     * frame_rate_base.
1333
     * for variable fps this is 1
1334
     * - encoding: set by user.
1335
     * - decoding: set by lavc.
1336
     * @todo move this after frame_rate
1337
     */
1338

    
1339
    int frame_rate_base;
1340
    /**
1341
     * intra quantizer bias.
1342
     * - encoding: set by user.
1343
     * - decoding: unused
1344
     */
1345
    int intra_quant_bias;
1346
#define FF_DEFAULT_QUANT_BIAS 999999
1347
    
1348
    /**
1349
     * inter quantizer bias.
1350
     * - encoding: set by user.
1351
     * - decoding: unused
1352
     */
1353
    int inter_quant_bias;
1354

    
1355
    /**
1356
     * color table ID.
1357
     * - encoding: unused.
1358
     * - decoding: which clrtable should be used for 8bit RGB images
1359
     *             table have to be stored somewhere FIXME
1360
     */
1361
    int color_table_id;
1362
    
1363
    /**
1364
     * internal_buffer count. 
1365
     * Dont touch, used by lavc default_get_buffer()
1366
     */
1367
    int internal_buffer_count;
1368
    
1369
    /**
1370
     * internal_buffers. 
1371
     * Dont touch, used by lavc default_get_buffer()
1372
     */
1373
    void *internal_buffer;
1374

    
1375
#define FF_LAMBDA_SHIFT 7
1376
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1377
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1378
#define FF_LAMBDA_MAX (256*128-1)
1379

    
1380
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1381
    /**
1382
     * global quality for codecs which cannot change it per frame.
1383
     * this should be proportional to MPEG1/2/4 qscale.
1384
     * - encoding: set by user.
1385
     * - decoding: unused
1386
     */
1387
    int global_quality;
1388
    
1389
#define FF_CODER_TYPE_VLC   0
1390
#define FF_CODER_TYPE_AC    1
1391
    /**
1392
     * coder type
1393
     * - encoding: set by user.
1394
     * - decoding: unused
1395
     */
1396
    int coder_type;
1397

    
1398
    /**
1399
     * context model
1400
     * - encoding: set by user.
1401
     * - decoding: unused
1402
     */
1403
    int context_model;
1404
    
1405
    /**
1406
     * slice flags
1407
     * - encoding: unused
1408
     * - decoding: set by user.
1409
     */
1410
    int slice_flags;
1411
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1412
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1413
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1414

    
1415
    /**
1416
     * XVideo Motion Acceleration
1417
     * - encoding: forbidden
1418
     * - decoding: set by decoder
1419
     */
1420
    int xvmc_acceleration;
1421
    
1422
    /**
1423
     * macroblock decision mode
1424
     * - encoding: set by user.
1425
     * - decoding: unused
1426
     */
1427
    int mb_decision;
1428
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1429
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1430
#define FF_MB_DECISION_RD     2        ///< rate distoration
1431

    
1432
    /**
1433
     * custom intra quantization matrix
1434
     * - encoding: set by user, can be NULL
1435
     * - decoding: set by lavc
1436
     */
1437
    uint16_t *intra_matrix;
1438

    
1439
    /**
1440
     * custom inter quantization matrix
1441
     * - encoding: set by user, can be NULL
1442
     * - decoding: set by lavc
1443
     */
1444
    uint16_t *inter_matrix;
1445
    
1446
    /**
1447
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1448
     * this is used to workaround some encoder bugs
1449
     * - encoding: unused
1450
     * - decoding: set by user, will be converted to upper case by lavc during init
1451
     */
1452
    unsigned int stream_codec_tag;
1453

    
1454
    /**
1455
     * scene change detection threshold.
1456
     * 0 is default, larger means fewer detected scene changes
1457
     * - encoding: set by user.
1458
     * - decoding: unused
1459
     */
1460
    int scenechange_threshold;
1461

    
1462
    /**
1463
     * minimum lagrange multipler
1464
     * - encoding: set by user.
1465
     * - decoding: unused
1466
     */
1467
    int lmin;
1468

    
1469
    /**
1470
     * maximum lagrange multipler
1471
     * - encoding: set by user.
1472
     * - decoding: unused
1473
     */
1474
    int lmax;
1475

    
1476
    /**
1477
     * Palette control structure
1478
     * - encoding: ??? (no palette-enabled encoder yet)
1479
     * - decoding: set by user.
1480
     */
1481
    struct AVPaletteControl *palctrl;
1482

    
1483
    /**
1484
     * noise reduction strength
1485
     * - encoding: set by user.
1486
     * - decoding: unused
1487
     */
1488
    int noise_reduction;
1489
    
1490
    /**
1491
     * called at the beginning of a frame to get cr buffer for it.
1492
     * buffer type (size, hints) must be the same. lavc won't check it.
1493
     * lavc will pass previous buffer in pic, function should return
1494
     * same buffer or new buffer with old frame "painted" into it.
1495
     * if pic.data[0] == NULL must behave like get_buffer().
1496
     * - encoding: unused
1497
     * - decoding: set by lavc, user can override
1498
     */
1499
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1500

    
1501
    /**
1502
     * number of bits which should be loaded into the rc buffer before decoding starts
1503
     * - encoding: set by user.
1504
     * - decoding: unused
1505
     */
1506
    int rc_initial_buffer_occupancy;
1507

    
1508
    /**
1509
     *
1510
     * - encoding: set by user.
1511
     * - decoding: unused
1512
     */
1513
    int inter_threshold;
1514

    
1515
    /**
1516
     * CODEC_FLAG2_*.
1517
     * - encoding: set by user.
1518
     * - decoding: set by user.
1519
     */
1520
    int flags2;
1521

    
1522
    /**
1523
     * simulates errors in the bitstream to test error concealment.
1524
     * - encoding: set by user.
1525
     * - decoding: unused.
1526
     */
1527
    int error_rate;
1528
    
1529
    /**
1530
     * MP3 antialias algorithm, see FF_AA_* below.
1531
     * - encoding: unused
1532
     * - decoding: set by user
1533
     */
1534
    int antialias_algo;
1535
#define FF_AA_AUTO    0
1536
#define FF_AA_FASTINT 1 //not implemented yet
1537
#define FF_AA_INT     2
1538
#define FF_AA_FLOAT   3
1539
    /**
1540
     * Quantizer noise shaping.
1541
     * - encoding: set by user
1542
     * - decoding: unused
1543
     */
1544
    int quantizer_noise_shaping;
1545

    
1546
    /**
1547
     * Thread count.
1548
     * is used to decide how many independant tasks should be passed to execute()
1549
     * - encoding: set by user
1550
     * - decoding: set by user
1551
     */
1552
    int thread_count;
1553
    
1554
    /**
1555
     * the codec may call this to execute several independant things. it will return only after
1556
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1557
     * default implementation will execute the parts serially
1558
     * @param count the number of things to execute
1559
     * - encoding: set by lavc, user can override
1560
     * - decoding: set by lavc, user can override
1561
     */
1562
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1563
    
1564
    /**
1565
     * Thread opaque.
1566
     * can be used by execute() to store some per AVCodecContext stuff.
1567
     * - encoding: set by execute()
1568
     * - decoding: set by execute()
1569
     */
1570
    void *thread_opaque;
1571

    
1572
    /**
1573
     * Motion estimation threshold. under which no motion estimation is 
1574
     * performed, but instead the user specified motion vectors are used
1575
     * 
1576
     * - encoding: set by user
1577
     * - decoding: unused
1578
     */
1579
     int me_threshold;
1580

    
1581
    /**
1582
     * Macroblock threshold. under which the user specified macroblock types will be used
1583
     * - encoding: set by user
1584
     * - decoding: unused
1585
     */
1586
     int mb_threshold;
1587
} AVCodecContext;
1588

    
1589

    
1590
/**
1591
 * AVOption.
1592
 */
1593
typedef struct AVOption {
1594
    /** options' name */
1595
    const char *name; /* if name is NULL, it indicates a link to next */
1596
    /** short English text help or const struct AVOption* subpointer */
1597
    const char *help; //        const struct AVOption* sub;
1598
    /** offset to context structure where the parsed value should be stored */
1599
    int offset;
1600
    /** options' type */
1601
    int type;
1602
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1603
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1604
#define FF_OPT_TYPE_INT 3       ///< integer
1605
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1606
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1607
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1608
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1609
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1610
    /** min value  (min == max   ->  no limits) */
1611
    double min;
1612
    /** maximum value for double/int */
1613
    double max;
1614
    /** default boo [0,1]l/double/int value */
1615
    double defval;
1616
    /**
1617
     * default string value (with optional semicolon delimited extra option-list
1618
     * i.e.   option1;option2;option3
1619
     * defval might select other then first argument as default
1620
     */
1621
    const char *defstr;
1622
#define FF_OPT_MAX_DEPTH 10
1623
} AVOption;
1624

    
1625
/**
1626
 * Parse option(s) and sets fields in passed structure
1627
 * @param strct        structure where the parsed results will be written
1628
 * @param list  list with AVOptions
1629
 * @param opts        string with options for parsing
1630
 */
1631
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1632

    
1633

    
1634
/**
1635
 * AVCodec.
1636
 */
1637
typedef struct AVCodec {
1638
    const char *name;
1639
    enum CodecType type;
1640
    int id;
1641
    int priv_data_size;
1642
    int (*init)(AVCodecContext *);
1643
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1644
    int (*close)(AVCodecContext *);
1645
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1646
                  uint8_t *buf, int buf_size);
1647
    int capabilities;
1648
    const AVOption *options;
1649
    struct AVCodec *next;
1650
    void (*flush)(AVCodecContext *);
1651
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1652
} AVCodec;
1653

    
1654
/**
1655
 * four components are given, that's all.
1656
 * the last component is alpha
1657
 */
1658
typedef struct AVPicture {
1659
    uint8_t *data[4];
1660
    int linesize[4];       ///< number of bytes per line
1661
} AVPicture;
1662

    
1663
/**
1664
 * AVPaletteControl
1665
 * This structure defines a method for communicating palette changes
1666
 * between and demuxer and a decoder.
1667
 */
1668
#define AVPALETTE_SIZE 1024
1669
#define AVPALETTE_COUNT 256
1670
typedef struct AVPaletteControl {
1671

    
1672
    /* demuxer sets this to 1 to indicate the palette has changed;
1673
     * decoder resets to 0 */
1674
    int palette_changed;
1675

    
1676
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1677
     * the individual palette components should be on a 8-bit scale; if
1678
     * the palette data comes from a IBM VGA native format, the component
1679
     * data is probably 6 bits in size and needs to be scaled */
1680
    unsigned int palette[AVPALETTE_COUNT];
1681

    
1682
} AVPaletteControl;
1683

    
1684
extern AVCodec ac3_encoder;
1685
extern AVCodec mp2_encoder;
1686
extern AVCodec mp3lame_encoder;
1687
extern AVCodec oggvorbis_encoder;
1688
extern AVCodec faac_encoder;
1689
extern AVCodec mpeg1video_encoder;
1690
extern AVCodec mpeg2video_encoder;
1691
extern AVCodec h263_encoder;
1692
extern AVCodec h263p_encoder;
1693
extern AVCodec flv_encoder;
1694
extern AVCodec rv10_encoder;
1695
extern AVCodec rv20_encoder;
1696
extern AVCodec dvvideo_encoder;
1697
extern AVCodec mjpeg_encoder;
1698
extern AVCodec ljpeg_encoder;
1699
extern AVCodec mpeg4_encoder;
1700
extern AVCodec msmpeg4v1_encoder;
1701
extern AVCodec msmpeg4v2_encoder;
1702
extern AVCodec msmpeg4v3_encoder;
1703
extern AVCodec wmv1_encoder;
1704
extern AVCodec wmv2_encoder;
1705
extern AVCodec huffyuv_encoder;
1706
extern AVCodec h264_encoder;
1707
extern AVCodec asv1_encoder;
1708
extern AVCodec asv2_encoder;
1709
extern AVCodec vcr1_encoder;
1710
extern AVCodec ffv1_encoder;
1711
extern AVCodec mdec_encoder;
1712
extern AVCodec zlib_encoder;
1713

    
1714
extern AVCodec h263_decoder;
1715
extern AVCodec mpeg4_decoder;
1716
extern AVCodec msmpeg4v1_decoder;
1717
extern AVCodec msmpeg4v2_decoder;
1718
extern AVCodec msmpeg4v3_decoder;
1719
extern AVCodec wmv1_decoder;
1720
extern AVCodec wmv2_decoder;
1721
extern AVCodec mpeg1video_decoder;
1722
extern AVCodec mpeg2video_decoder;
1723
extern AVCodec mpegvideo_decoder;
1724
extern AVCodec mpeg_xvmc_decoder;
1725
extern AVCodec h263i_decoder;
1726
extern AVCodec flv_decoder;
1727
extern AVCodec rv10_decoder;
1728
extern AVCodec rv20_decoder;
1729
extern AVCodec svq1_decoder;
1730
extern AVCodec svq3_decoder;
1731
extern AVCodec dvvideo_decoder;
1732
extern AVCodec wmav1_decoder;
1733
extern AVCodec wmav2_decoder;
1734
extern AVCodec mjpeg_decoder;
1735
extern AVCodec mjpegb_decoder;
1736
extern AVCodec sp5x_decoder;
1737
extern AVCodec mp2_decoder;
1738
extern AVCodec mp3_decoder;
1739
extern AVCodec mace3_decoder;
1740
extern AVCodec mace6_decoder;
1741
extern AVCodec huffyuv_decoder;
1742
extern AVCodec oggvorbis_decoder;
1743
extern AVCodec cyuv_decoder;
1744
extern AVCodec h264_decoder;
1745
extern AVCodec indeo3_decoder;
1746
extern AVCodec vp3_decoder;
1747
extern AVCodec theora_decoder;
1748
extern AVCodec amr_nb_decoder;
1749
extern AVCodec amr_nb_encoder;
1750
extern AVCodec amr_wb_encoder;
1751
extern AVCodec amr_wb_decoder;
1752
extern AVCodec aac_decoder;
1753
extern AVCodec mpeg4aac_decoder;
1754
extern AVCodec asv1_decoder;
1755
extern AVCodec asv2_decoder;
1756
extern AVCodec vcr1_decoder;
1757
extern AVCodec cljr_decoder;
1758
extern AVCodec ffv1_decoder;
1759
extern AVCodec fourxm_decoder;
1760
extern AVCodec mdec_decoder;
1761
extern AVCodec roq_decoder;
1762
extern AVCodec interplay_video_decoder;
1763
extern AVCodec xan_wc3_decoder;
1764
extern AVCodec rpza_decoder;
1765
extern AVCodec cinepak_decoder;
1766
extern AVCodec msrle_decoder;
1767
extern AVCodec msvideo1_decoder;
1768
extern AVCodec vqa_decoder;
1769
extern AVCodec idcin_decoder;
1770
extern AVCodec eightbps_decoder;
1771
extern AVCodec smc_decoder;
1772
extern AVCodec flic_decoder;
1773
extern AVCodec vmdvideo_decoder;
1774
extern AVCodec vmdaudio_decoder;
1775
extern AVCodec truemotion1_decoder;
1776
extern AVCodec mszh_decoder;
1777
extern AVCodec zlib_decoder;
1778
extern AVCodec ra_144_decoder;
1779
extern AVCodec ra_288_decoder;
1780
extern AVCodec roq_dpcm_decoder;
1781
extern AVCodec interplay_dpcm_decoder;
1782
extern AVCodec xan_dpcm_decoder;
1783
extern AVCodec qtrle_decoder;
1784
extern AVCodec flac_decoder;
1785

    
1786
/* pcm codecs */
1787
#define PCM_CODEC(id, name) \
1788
extern AVCodec name ## _decoder; \
1789
extern AVCodec name ## _encoder
1790

    
1791
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1792
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1793
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1794
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1795
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1796
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1797
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1798
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1799

    
1800
/* adpcm codecs */
1801

    
1802
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1803
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1804
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1805
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1806
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1807
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1808
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1809
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1810
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1811
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1812
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1813
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1814

    
1815
#undef PCM_CODEC
1816

    
1817
/* dummy raw video codec */
1818
extern AVCodec rawvideo_encoder;
1819
extern AVCodec rawvideo_decoder;
1820

    
1821
/* the following codecs use external GPL libs */
1822
extern AVCodec ac3_decoder;
1823

    
1824
/* resample.c */
1825

    
1826
struct ReSampleContext;
1827

    
1828
typedef struct ReSampleContext ReSampleContext;
1829

    
1830
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1831
                                     int output_rate, int input_rate);
1832
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1833
void audio_resample_close(ReSampleContext *s);
1834

    
1835
/* YUV420 format is assumed ! */
1836

    
1837
struct ImgReSampleContext;
1838

    
1839
typedef struct ImgReSampleContext ImgReSampleContext;
1840

    
1841
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1842
                                      int input_width, int input_height);
1843

    
1844
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1845
                                      int iwidth, int iheight,
1846
                                      int topBand, int bottomBand,
1847
                                      int leftBand, int rightBand,
1848
                                      int padtop, int padbottom,
1849
                                      int padleft, int padright);
1850

    
1851

    
1852
void img_resample(ImgReSampleContext *s, 
1853
                  AVPicture *output, const AVPicture *input);
1854

    
1855
void img_resample_close(ImgReSampleContext *s);
1856

    
1857
/**
1858
 * Allocate memory for a picture.  Call avpicture_free to free it.
1859
 *
1860
 * @param picture the picture to be filled in.
1861
 * @param pix_fmt the format of the picture.
1862
 * @param width the width of the picture.
1863
 * @param height the height of the picture.
1864
 * @return 0 if successful, -1 if not.
1865
 */
1866
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1867

    
1868
/* Free a picture previously allocated by avpicture_alloc. */
1869
void avpicture_free(AVPicture *picture);
1870

    
1871
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1872
                   int pix_fmt, int width, int height);
1873
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1874
                     unsigned char *dest, int dest_size);
1875
int avpicture_get_size(int pix_fmt, int width, int height);
1876
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1877
const char *avcodec_get_pix_fmt_name(int pix_fmt);
1878
enum PixelFormat avcodec_get_pix_fmt(const char* name);
1879

    
1880
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
1881
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
1882
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
1883
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
1884
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
1885
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1886

    
1887
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1888
                             int has_alpha);
1889
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1890
                              int has_alpha, int *loss_ptr);
1891

    
1892
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
1893
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
1894
int img_get_alpha_info(const AVPicture *src,
1895
                       int pix_fmt, int width, int height);
1896

    
1897
/* convert among pixel formats */
1898
int img_convert(AVPicture *dst, int dst_pix_fmt,
1899
                const AVPicture *src, int pix_fmt, 
1900
                int width, int height);
1901

    
1902
/* deinterlace a picture */
1903
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1904
                          int pix_fmt, int width, int height);
1905

    
1906
/* external high level API */
1907

    
1908
extern AVCodec *first_avcodec;
1909

    
1910
/* returns LIBAVCODEC_VERSION_INT constant */
1911
unsigned avcodec_version(void);
1912
/* returns LIBAVCODEC_BUILD constant */
1913
unsigned avcodec_build(void);
1914
void avcodec_init(void);
1915

    
1916
void register_avcodec(AVCodec *format);
1917
AVCodec *avcodec_find_encoder(enum CodecID id);
1918
AVCodec *avcodec_find_encoder_by_name(const char *name);
1919
AVCodec *avcodec_find_decoder(enum CodecID id);
1920
AVCodec *avcodec_find_decoder_by_name(const char *name);
1921
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1922

    
1923
void avcodec_get_context_defaults(AVCodecContext *s);
1924
AVCodecContext *avcodec_alloc_context(void);
1925
void avcodec_get_frame_defaults(AVFrame *pic);
1926
AVFrame *avcodec_alloc_frame(void);
1927

    
1928
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1929
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1930
void avcodec_default_free_buffers(AVCodecContext *s);
1931

    
1932
int avcodec_thread_init(AVCodecContext *s, int thread_count);
1933
void avcodec_thread_free(AVCodecContext *s);
1934
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
1935
//FIXME func typedef
1936

    
1937
/**
1938
 * opens / inits the AVCodecContext.
1939
 * not thread save!
1940
 */
1941
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1942

    
1943
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
1944
                         int *frame_size_ptr,
1945
                         uint8_t *buf, int buf_size);
1946
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
1947
                         int *got_picture_ptr,
1948
                         uint8_t *buf, int buf_size);
1949
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
1950
                        int *data_size_ptr,
1951
                        uint8_t *buf, int buf_size);
1952
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1953
                         const short *samples);
1954
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1955
                         const AVFrame *pict);
1956

    
1957
int avcodec_close(AVCodecContext *avctx);
1958

    
1959
void avcodec_register_all(void);
1960

    
1961
void avcodec_flush_buffers(AVCodecContext *avctx);
1962

    
1963
/* misc usefull functions */
1964

    
1965
/**
1966
 * returns a single letter to describe the picture type
1967
 */
1968
char av_get_pict_type_char(int pict_type);
1969

    
1970
/**
1971
 * reduce a fraction.
1972
 * this is usefull for framerate calculations
1973
 * @param max the maximum allowed for dst_nom & dst_den
1974
 * @return 1 if exact, 0 otherwise
1975
 */
1976
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1977

    
1978
/**
1979
 * rescale a 64bit integer.
1980
 * a simple a*b/c isnt possible as it can overflow
1981
 */
1982
int64_t av_rescale(int64_t a, int b, int c);
1983

    
1984

    
1985
/**
1986
 * Interface for 0.5.0 version
1987
 *
1988
 * do not even think about it's usage for this moment
1989
 */
1990

    
1991
typedef struct {
1992
    /// compressed size used from given memory buffer
1993
    int size;
1994
    /// I/P/B frame type
1995
    int frame_type;
1996
} avc_enc_result_t;
1997

    
1998
/**
1999
 * Commands
2000
 * order can't be changed - once it was defined
2001
 */
2002
typedef enum {
2003
    // general commands
2004
    AVC_OPEN_BY_NAME = 0xACA000,
2005
    AVC_OPEN_BY_CODEC_ID,
2006
    AVC_OPEN_BY_FOURCC,
2007
    AVC_CLOSE,
2008

    
2009
    AVC_FLUSH,
2010
    // pin - struct { uint8_t* src, uint_t src_size }
2011
    // pout - struct { AVPicture* img, consumed_bytes,
2012
    AVC_DECODE,
2013
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
2014
    // pout - uint_t used_from_dest_size
2015
    AVC_ENCODE, 
2016

    
2017
    // query/get video commands
2018
    AVC_GET_VERSION = 0xACB000,
2019
    AVC_GET_WIDTH,
2020
    AVC_GET_HEIGHT,
2021
    AVC_GET_DELAY,
2022
    AVC_GET_QUANT_TABLE,
2023
    // ...
2024

    
2025
    // query/get audio commands
2026
    AVC_GET_FRAME_SIZE = 0xABC000,
2027

    
2028
    // maybe define some simple structure which
2029
    // might be passed to the user - but they can't
2030
    // contain any codec specific parts and these
2031
    // calls are usualy necessary only few times
2032

    
2033
    // set video commands
2034
    AVC_SET_WIDTH = 0xACD000,
2035
    AVC_SET_HEIGHT,
2036

    
2037
    // set video encoding commands
2038
    AVC_SET_FRAME_RATE = 0xACD800,
2039
    AVC_SET_QUALITY,
2040
    AVC_SET_HURRY_UP,
2041

    
2042
    // set audio commands
2043
    AVC_SET_SAMPLE_RATE = 0xACE000,
2044
    AVC_SET_CHANNELS,
2045

    
2046
} avc_cmd_t;
2047

    
2048
/**
2049
 * \param handle  allocated private structure by libavcodec
2050
 *                for initialization pass NULL - will be returned pout
2051
 *                user is supposed to know nothing about its structure
2052
 * \param cmd     type of operation to be performed
2053
 * \param pint    input parameter
2054
 * \param pout    output parameter
2055
 *
2056
 * \returns  command status - eventually for query command it might return
2057
 * integer resulting value
2058
 */
2059
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2060

    
2061
/* frame parsing */
2062
typedef struct AVCodecParserContext {
2063
    void *priv_data;
2064
    struct AVCodecParser *parser;
2065
    int64_t frame_offset; /* offset of the current frame */
2066
    int64_t cur_offset; /* current offset 
2067
                           (incremented by each av_parser_parse()) */
2068
    int64_t last_frame_offset; /* offset of the last frame */
2069
    /* video info */
2070
    int pict_type; /* XXX: put it back in AVCodecContext */
2071
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2072
    int64_t pts;     /* pts of the current frame */
2073
    int64_t dts;     /* dts of the current frame */
2074

    
2075
    /* private data */
2076
    int64_t last_pts;
2077
    int64_t last_dts;
2078

    
2079
#define AV_PARSER_PTS_NB 4
2080
    int cur_frame_start_index;
2081
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2082
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2083
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2084
} AVCodecParserContext;
2085

    
2086
typedef struct AVCodecParser {
2087
    int codec_ids[3]; /* several codec IDs are permitted */
2088
    int priv_data_size;
2089
    int (*parser_init)(AVCodecParserContext *s);
2090
    int (*parser_parse)(AVCodecParserContext *s, 
2091
                        AVCodecContext *avctx,
2092
                        uint8_t **poutbuf, int *poutbuf_size, 
2093
                        const uint8_t *buf, int buf_size);
2094
    void (*parser_close)(AVCodecParserContext *s);
2095
    struct AVCodecParser *next;
2096
} AVCodecParser;
2097

    
2098
extern AVCodecParser *av_first_parser;
2099

    
2100
void av_register_codec_parser(AVCodecParser *parser);
2101
AVCodecParserContext *av_parser_init(int codec_id);
2102
int av_parser_parse(AVCodecParserContext *s, 
2103
                    AVCodecContext *avctx,
2104
                    uint8_t **poutbuf, int *poutbuf_size, 
2105
                    const uint8_t *buf, int buf_size,
2106
                    int64_t pts, int64_t dts);
2107
void av_parser_close(AVCodecParserContext *s);
2108

    
2109
extern AVCodecParser mpegvideo_parser;
2110
extern AVCodecParser mpeg4video_parser;
2111
extern AVCodecParser h263_parser;
2112
extern AVCodecParser h264_parser;
2113
extern AVCodecParser mpegaudio_parser;
2114
extern AVCodecParser ac3_parser;
2115

    
2116
/* memory */
2117
void *av_malloc(unsigned int size);
2118
void *av_mallocz(unsigned int size);
2119
void *av_realloc(void *ptr, unsigned int size);
2120
void av_free(void *ptr);
2121
char *av_strdup(const char *s);
2122
void av_freep(void *ptr);
2123
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2124
/* for static data only */
2125
/* call av_free_static to release all staticaly allocated tables */
2126
void av_free_static(void);
2127
void *av_mallocz_static(unsigned int size);
2128

    
2129
/* add by bero : in adx.c */
2130
int is_adx(const unsigned char *buf,size_t bufsize);
2131

    
2132
void img_copy(AVPicture *dst, const AVPicture *src,
2133
              int pix_fmt, int width, int height);
2134

    
2135
/* av_log API */
2136

    
2137
#include <stdarg.h>
2138

    
2139
#define AV_LOG_QUIET -1
2140
#define AV_LOG_ERROR 0
2141
#define AV_LOG_INFO 1
2142
#define AV_LOG_DEBUG 2
2143

    
2144
extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2145
extern void av_vlog(void*, int level, const char *fmt, va_list);
2146
extern int av_log_get_level(void);
2147
extern void av_log_set_level(int);
2148
extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2149

    
2150
/* endian macros */
2151
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2152
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2153
                   (((uint8_t*)(x))[1] << 16) | \
2154
                   (((uint8_t*)(x))[2] << 8) | \
2155
                    ((uint8_t*)(x))[3])
2156
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2157
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2158
                   (((uint8_t*)(x))[2] << 16) | \
2159
                   (((uint8_t*)(x))[1] << 8) | \
2160
                    ((uint8_t*)(x))[0])
2161

    
2162
#ifdef __cplusplus
2163
}
2164
#endif
2165

    
2166
#endif /* AVCODEC_H */