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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       4716
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#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
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#define LIBAVCODEC_VERSION     FFMPEG_VERSION
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#define AV_STRINGIFY(s)        AV_TOSTRING(s)
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#define AV_TOSTRING(s) #s
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#define LIBAVCODEC_IDENT        "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
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#define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
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#define AV_TIME_BASE 1000000
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enum CodecID {
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    CODEC_ID_NONE, 
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    CODEC_ID_MPEG1VIDEO,
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    CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
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    CODEC_ID_MPEG2VIDEO_XVMC,
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    CODEC_ID_H261,
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    CODEC_ID_H263,
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    CODEC_ID_RV10,
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    CODEC_ID_RV20,
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    CODEC_ID_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: \
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     * - 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\
369
     * - 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;\
387
\
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    /**\
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     * picture number in bitstream order.\
390
     * - encoding: set by\
391
     * - 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.\
396
     * - encoding: set by\
397
     * - decoding: set by lavc\
398
     */\
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    int display_picture_number;\
400
\
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    /**\
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     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
403
     * - encoding: set by lavc for coded_picture (and set by user for input)\
404
     * - decoding: set by lavc\
405
     */\
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    int quality; \
407
\
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    /**\
409
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
410
     * set to INT_MAX if the buffer has not been used yet \
411
     * - encoding: unused\
412
     * - decoding: MUST be set by get_buffer()\
413
     */\
414
    int age;\
415
\
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    /**\
417
     * is this picture used as reference\
418
     * - encoding: unused\
419
     * - decoding: set by lavc (before get_buffer() call))\
420
     */\
421
    int reference;\
422
\
423
    /**\
424
     * QP table\
425
     * - encoding: unused\
426
     * - decoding: set by lavc\
427
     */\
428
    int8_t *qscale_table;\
429
    /**\
430
     * QP store stride\
431
     * - encoding: unused\
432
     * - decoding: set by lavc\
433
     */\
434
    int qstride;\
435
\
436
    /**\
437
     * mbskip_table[mb]>=1 if MB didnt change\
438
     * stride= mb_width = (width+15)>>4\
439
     * - encoding: unused\
440
     * - decoding: set by lavc\
441
     */\
442
    uint8_t *mbskip_table;\
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\
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    /**\
445
     * Motion vector table\
446
     * - encoding: set by user\
447
     * - decoding: set by lavc\
448
     */\
449
    int16_t (*motion_val[2])[2];\
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\
451
    /**\
452
     * Macroblock type table\
453
     * mb_type_base + mb_width + 2\
454
     * - encoding: set by user\
455
     * - decoding: set by lavc\
456
     */\
457
    uint32_t *mb_type;\
458
\
459
    /**\
460
     * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
461
     * - encoding: unused\
462
     * - decoding: set by lavc\
463
     */\
464
    uint8_t motion_subsample_log2;\
465
\
466
    /**\
467
     * for some private data of the user\
468
     * - encoding: unused\
469
     * - decoding: set by user\
470
     */\
471
    void *opaque;\
472
\
473
    /**\
474
     * error\
475
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
476
     * - decoding: unused\
477
     */\
478
    uint64_t error[4];\
479
\
480
    /**\
481
     * type of the buffer (to keep track of who has to dealloc data[*])\
482
     * - encoding: set by the one who allocs it\
483
     * - decoding: set by the one who allocs it\
484
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
485
     */\
486
    int type;\
487
    \
488
    /**\
489
     * when decoding, this signal how much the picture must be delayed.\
490
     * extra_delay = repeat_pict / (2*fps)\
491
     * - encoding: unused\
492
     * - decoding: set by lavc\
493
     */\
494
    int repeat_pict;\
495
    \
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    /**\
497
     * \
498
     */\
499
    int qscale_type;\
500
    \
501
    /**\
502
     * The content of the picture is interlaced.\
503
     * - encoding: set by user\
504
     * - decoding: set by lavc (default 0)\
505
     */\
506
    int interlaced_frame;\
507
    \
508
    /**\
509
     * if the content is interlaced, is top field displayed first.\
510
     * - encoding: set by user\
511
     * - decoding: set by lavc\
512
     */\
513
    int top_field_first;\
514
    \
515
    /**\
516
     * Pan scan.\
517
     * - encoding: set by user\
518
     * - decoding: set by lavc\
519
     */\
520
    AVPanScan *pan_scan;\
521
    \
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    /**\
523
     * tell user application that palette has changed from previous frame.\
524
     * - encoding: ??? (no palette-enabled encoder yet)\
525
     * - decoding: set by lavc (default 0)\
526
     */\
527
    int palette_has_changed;\
528
    \
529
    /**\
530
     * Codec suggestion on buffer type if != 0\
531
     * - encoding: unused\
532
     * - decoding: set by lavc (before get_buffer() call))\
533
     */\
534
    int buffer_hints;\
535
\
536
    /**\
537
     * DCT coeffitients\
538
     * - encoding: unused\
539
     * - decoding: set by lavc\
540
     */\
541
    short *dct_coeff;\
542
\
543
    /**\
544
     * Motion referece frame index\
545
     * - encoding: set by user\
546
     * - decoding: set by lavc\
547
     */\
548
    int8_t *ref_index[2];
549

    
550
#define FF_QSCALE_TYPE_MPEG1        0
551
#define FF_QSCALE_TYPE_MPEG2        1
552

    
553
#define FF_BUFFER_TYPE_INTERNAL 1
554
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
555
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
556
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
557

    
558

    
559
#define FF_I_TYPE 1 // Intra
560
#define FF_P_TYPE 2 // Predicted
561
#define FF_B_TYPE 3 // Bi-dir predicted
562
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
563
#define FF_SI_TYPE 5
564
#define FF_SP_TYPE 6
565

    
566
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
567
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
568
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
569
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
570

    
571
/**
572
 * Audio Video Frame.
573
 */
574
typedef struct AVFrame {
575
    FF_COMMON_FRAME
576
} AVFrame;
577

    
578
#define DEFAULT_FRAME_RATE_BASE 1001000
579

    
580
/**
581
 * Used by av_log
582
 */
583
typedef struct AVCLASS AVClass;
584
struct AVCLASS {
585
    const char* class_name;
586
    const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
587
                                        or AVFormatContext, which begin with an AVClass.
588
                                        Needed because av_log is in libavcodec and has no visibility
589
                                        of AVIn/OutputFormat */
590
};
591

    
592
/**
593
 * main external api structure.
594
 */
595
typedef struct AVCodecContext {
596
    /**
597
     * Info on struct for av_log
598
     * - set by avcodec_alloc_context
599
     */
600
    AVClass *av_class;
601
    /**
602
     * the average bitrate.
603
     * - encoding: set by user. unused for constant quantizer encoding
604
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
605
     */
606
    int bit_rate;
607

    
608
    /**
609
     * number of bits the bitstream is allowed to diverge from the reference.
610
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
611
     * - encoding: set by user. unused for constant quantizer encoding
612
     * - decoding: unused
613
     */
614
    int bit_rate_tolerance; 
615

    
616
    /**
617
     * CODEC_FLAG_*.
618
     * - encoding: set by user.
619
     * - decoding: set by user.
620
     */
621
    int flags;
622

    
623
    /**
624
     * some codecs needs additionnal format info. It is stored here
625
     * - encoding: set by user. 
626
     * - decoding: set by lavc. (FIXME is this ok?)
627
     */
628
    int sub_id;
629

    
630
    /**
631
     * motion estimation algorithm used for video coding.
632
     * - encoding: MUST be set by user.
633
     * - decoding: unused
634
     */
635
    int me_method;
636

    
637
    /**
638
     * some codecs need / can use extra-data like huffman tables.
639
     * mjpeg: huffman tables
640
     * rv10: additional flags
641
     * mpeg4: global headers (they can be in the bitstream or here)
642
     * - encoding: set/allocated/freed by lavc.
643
     * - decoding: set/allocated/freed by user.
644
     */
645
    void *extradata;
646
    int extradata_size;
647
    
648
    /* video only */
649
    /**
650
     * frames per sec multiplied by frame_rate_base.
651
     * for variable fps this is the precission, so if the timestamps 
652
     * can be specified in msec precssion then this is 1000*frame_rate_base
653
     * - encoding: MUST be set by user
654
     * - decoding: set by lavc. 0 or the frame_rate if available
655
     */
656
    int frame_rate;
657
    
658
    /**
659
     * width / height.
660
     * - encoding: MUST be set by user. 
661
     * - decoding: set by user if known, codec should override / dynamically change if needed
662
     */
663
    int width, height;
664
    
665
#define FF_ASPECT_EXTENDED 15
666

    
667
    /**
668
     * the number of pictures in a group of pitures, or 0 for intra_only.
669
     * - encoding: set by user.
670
     * - decoding: unused
671
     */
672
    int gop_size;
673

    
674
    /**
675
     * pixel format, see PIX_FMT_xxx.
676
     * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
677
     *                    conversion is in order. This only works for
678
     *                    codecs with one supported pix_fmt, we should
679
     *                    do something for a generic case as well.
680
     * - decoding: set by lavc.
681
     */
682
    enum PixelFormat pix_fmt;
683
 
684
    /**
685
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
686
     * has to read frames at native frame rate.
687
     * - encoding: set by user.
688
     * - decoding: unused.
689
     */
690
    int rate_emu;
691
       
692
    /**
693
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
694
     * decoder to draw an horizontal band. It improve cache usage. Not
695
     * all codecs can do that. You must check the codec capabilities
696
     * before
697
     * - encoding: unused
698
     * - decoding: set by user.
699
     * @param height the height of the slice
700
     * @param y the y position of the slice
701
     * @param type 1->top field, 2->bottom field, 3->frame
702
     * @param offset offset into the AVFrame.data from which the slice should be read
703
     */
704
    void (*draw_horiz_band)(struct AVCodecContext *s,
705
                            const AVFrame *src, int offset[4],
706
                            int y, int type, int height);
707

    
708
    /* audio only */
709
    int sample_rate; ///< samples per sec 
710
    int channels;
711
    int sample_fmt;  ///< sample format, currenly unused 
712

    
713
    /* the following data should not be initialized */
714
    int frame_size;     ///< in samples, initialized when calling 'init' 
715
    int frame_number;   ///< audio or video frame number 
716
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
717
    
718
    /**
719
     * number of frames the decoded output will be delayed relative to 
720
     * the encoded input.
721
     * - encoding: set by lavc.
722
     * - decoding: unused
723
     */
724
    int delay;
725
    
726
    /* - encoding parameters */
727
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
728
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
729
    
730
    /**
731
     * minimum quantizer.
732
     * - encoding: set by user.
733
     * - decoding: unused
734
     */
735
    int qmin;
736

    
737
    /**
738
     * maximum quantizer.
739
     * - encoding: set by user.
740
     * - decoding: unused
741
     */
742
    int qmax;
743

    
744
    /**
745
     * maximum quantizer difference etween frames.
746
     * - encoding: set by user.
747
     * - decoding: unused
748
     */
749
    int max_qdiff;
750

    
751
    /**
752
     * maximum number of b frames between non b frames.
753
     * note: the output will be delayed by max_b_frames+1 relative to the input
754
     * - encoding: set by user.
755
     * - decoding: unused
756
     */
757
    int max_b_frames;
758

    
759
    /**
760
     * qscale factor between ip and b frames.
761
     * - encoding: set by user.
762
     * - decoding: unused
763
     */
764
    float b_quant_factor;
765
    
766
    /** obsolete FIXME remove */
767
    int rc_strategy;
768
    int b_frame_strategy;
769

    
770
    /**
771
     * hurry up amount.
772
     * - encoding: unused
773
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
774
     */
775
    int hurry_up;
776
    
777
    struct AVCodec *codec;
778
    
779
    void *priv_data;
780

    
781
    /* unused, FIXME remove*/
782
    int rtp_mode;
783
    
784
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
785
                            /* do it's best to deliver a chunk with size    */
786
                            /* below rtp_payload_size, the chunk will start */
787
                            /* with a start code on some codecs like H.263  */
788
                            /* This doesn't take account of any particular  */
789
                            /* headers inside the transmited RTP payload    */
790

    
791
    
792
    /* The RTP callcack: This function is called  */
793
    /* every time the encoder as a packet to send */
794
    /* Depends on the encoder if the data starts  */
795
    /* with a Start Code (it should) H.263 does   */
796
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number); 
797

    
798
    /* statistics, used for 2-pass encoding */
799
    int mv_bits;
800
    int header_bits;
801
    int i_tex_bits;
802
    int p_tex_bits;
803
    int i_count;
804
    int p_count;
805
    int skip_count;
806
    int misc_bits;
807
    
808
    /**
809
     * number of bits used for the previously encoded frame.
810
     * - encoding: set by lavc
811
     * - decoding: unused
812
     */
813
    int frame_bits;
814

    
815
    /**
816
     * private data of the user, can be used to carry app specific stuff.
817
     * - encoding: set by user
818
     * - decoding: set by user
819
     */
820
    void *opaque;
821

    
822
    char codec_name[32];
823
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
824
    enum CodecID codec_id; /* see CODEC_ID_xxx */
825
    
826
    /**
827
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
828
     * this is used to workaround some encoder bugs
829
     * - encoding: set by user, if not then the default based on codec_id will be used
830
     * - decoding: set by user, will be converted to upper case by lavc during init
831
     */
832
    unsigned int codec_tag;
833
    
834
    /**
835
     * workaround bugs in encoders which sometimes cannot be detected automatically.
836
     * - encoding: unused
837
     * - decoding: set by user
838
     */
839
    int workaround_bugs;
840
#define FF_BUG_AUTODETECT       1  ///< autodetection
841
#define FF_BUG_OLD_MSMPEG4      2
842
#define FF_BUG_XVID_ILACE       4
843
#define FF_BUG_UMP4             8
844
#define FF_BUG_NO_PADDING       16
845
#define FF_BUG_AMV              32
846
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
847
#define FF_BUG_QPEL_CHROMA      64
848
#define FF_BUG_STD_QPEL         128
849
#define FF_BUG_QPEL_CHROMA2     256
850
#define FF_BUG_DIRECT_BLOCKSIZE 512
851
#define FF_BUG_EDGE             1024
852
#define FF_BUG_HPEL_CHROMA      2048
853
#define FF_BUG_DC_CLIP          4096
854
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
855
        
856
    /**
857
     * luma single coeff elimination threshold.
858
     * - encoding: set by user
859
     * - decoding: unused
860
     */
861
    int luma_elim_threshold;
862
    
863
    /**
864
     * chroma single coeff elimination threshold.
865
     * - encoding: set by user
866
     * - decoding: unused
867
     */
868
    int chroma_elim_threshold;
869
    
870
    /**
871
     * strictly follow the std (MPEG4, ...).
872
     * - encoding: set by user
873
     * - decoding: unused
874
     */
875
    int strict_std_compliance;
876
    
877
    /**
878
     * qscale offset between ip and b frames.
879
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
880
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
881
     * - encoding: set by user.
882
     * - decoding: unused
883
     */
884
    float b_quant_offset;
885
    
886
    /**
887
     * error resilience higher values will detect more errors but may missdetect
888
     * some more or less valid parts as errors.
889
     * - encoding: unused
890
     * - decoding: set by user
891
     */
892
    int error_resilience;
893
#define FF_ER_CAREFULL        1
894
#define FF_ER_COMPLIANT       2
895
#define FF_ER_AGGRESSIVE      3
896
#define FF_ER_VERY_AGGRESSIVE 4
897
    
898
    /**
899
     * called at the beginning of each frame to get a buffer for it.
900
     * if pic.reference is set then the frame will be read later by lavc
901
     * avcodec_align_dimensions() should be used to find the required width and
902
     * height, as they normally need to be rounded up to the next multiple of 16
903
     * - encoding: unused
904
     * - decoding: set by lavc, user can override
905
     */
906
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
907
    
908
    /**
909
     * called to release buffers which where allocated with get_buffer.
910
     * a released buffer can be reused in get_buffer()
911
     * pic.data[*] must be set to NULL
912
     * - encoding: unused
913
     * - decoding: set by lavc, user can override
914
     */
915
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
916

    
917
    /**
918
     * if 1 the stream has a 1 frame delay during decoding.
919
     * - encoding: set by lavc
920
     * - decoding: set by lavc
921
     */
922
    int has_b_frames;
923
    
924
    int block_align; ///< used by some WAV based audio codecs
925
    
926
    int parse_only; /* - decoding only: if true, only parsing is done
927
                       (function avcodec_parse_frame()). The frame
928
                       data is returned. Only MPEG codecs support this now. */
929
    
930
    /**
931
     * 0-> h263 quant 1-> mpeg quant.
932
     * - encoding: set by user.
933
     * - decoding: unused
934
     */
935
    int mpeg_quant;
936
    
937
    /**
938
     * pass1 encoding statistics output buffer.
939
     * - encoding: set by lavc
940
     * - decoding: unused
941
     */
942
    char *stats_out;
943
    
944
    /**
945
     * pass2 encoding statistics input buffer.
946
     * concatenated stuff from stats_out of pass1 should be placed here
947
     * - encoding: allocated/set/freed by user
948
     * - decoding: unused
949
     */
950
    char *stats_in;
951
    
952
    /**
953
     * ratecontrol qmin qmax limiting method.
954
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
955
     * - encoding: set by user.
956
     * - decoding: unused
957
     */
958
    float rc_qsquish;
959

    
960
    float rc_qmod_amp;
961
    int rc_qmod_freq;
962
    
963
    /**
964
     * ratecontrol override, see RcOverride.
965
     * - encoding: allocated/set/freed by user.
966
     * - decoding: unused
967
     */
968
    RcOverride *rc_override;
969
    int rc_override_count;
970
    
971
    /**
972
     * rate control equation.
973
     * - encoding: set by user
974
     * - decoding: unused
975
     */
976
    char *rc_eq;
977
    
978
    /**
979
     * maximum bitrate.
980
     * - encoding: set by user.
981
     * - decoding: unused
982
     */
983
    int rc_max_rate;
984
    
985
    /**
986
     * minimum bitrate.
987
     * - encoding: set by user.
988
     * - decoding: unused
989
     */
990
    int rc_min_rate;
991
    
992
    /**
993
     * decoder bitstream buffer size.
994
     * - encoding: set by user.
995
     * - decoding: unused
996
     */
997
    int rc_buffer_size;
998
    float rc_buffer_aggressivity;
999

    
1000
    /**
1001
     * qscale factor between p and i frames.
1002
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1003
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1004
     * - encoding: set by user.
1005
     * - decoding: unused
1006
     */
1007
    float i_quant_factor;
1008
    
1009
    /**
1010
     * qscale offset between p and i frames.
1011
     * - encoding: set by user.
1012
     * - decoding: unused
1013
     */
1014
    float i_quant_offset;
1015
    
1016
    /**
1017
     * initial complexity for pass1 ratecontrol.
1018
     * - encoding: set by user.
1019
     * - decoding: unused
1020
     */
1021
    float rc_initial_cplx;
1022

    
1023
    /**
1024
     * dct algorithm, see FF_DCT_* below.
1025
     * - encoding: set by user
1026
     * - decoding: unused
1027
     */
1028
    int dct_algo;
1029
#define FF_DCT_AUTO    0
1030
#define FF_DCT_FASTINT 1
1031
#define FF_DCT_INT     2
1032
#define FF_DCT_MMX     3
1033
#define FF_DCT_MLIB    4
1034
#define FF_DCT_ALTIVEC 5
1035
#define FF_DCT_FAAN    6
1036
    
1037
    /**
1038
     * luminance masking (0-> disabled).
1039
     * - encoding: set by user
1040
     * - decoding: unused
1041
     */
1042
    float lumi_masking;
1043
    
1044
    /**
1045
     * temporary complexity masking (0-> disabled).
1046
     * - encoding: set by user
1047
     * - decoding: unused
1048
     */
1049
    float temporal_cplx_masking;
1050
    
1051
    /**
1052
     * spatial complexity masking (0-> disabled).
1053
     * - encoding: set by user
1054
     * - decoding: unused
1055
     */
1056
    float spatial_cplx_masking;
1057
    
1058
    /**
1059
     * p block masking (0-> disabled).
1060
     * - encoding: set by user
1061
     * - decoding: unused
1062
     */
1063
    float p_masking;
1064

    
1065
    /**
1066
     * darkness masking (0-> disabled).
1067
     * - encoding: set by user
1068
     * - decoding: unused
1069
     */
1070
    float dark_masking;
1071
    
1072
    
1073
    /* for binary compatibility */
1074
    int unused;
1075
    
1076
    /**
1077
     * idct algorithm, see FF_IDCT_* below.
1078
     * - encoding: set by user
1079
     * - decoding: set by user
1080
     */
1081
    int idct_algo;
1082
#define FF_IDCT_AUTO         0
1083
#define FF_IDCT_INT          1
1084
#define FF_IDCT_SIMPLE       2
1085
#define FF_IDCT_SIMPLEMMX    3
1086
#define FF_IDCT_LIBMPEG2MMX  4
1087
#define FF_IDCT_PS2          5
1088
#define FF_IDCT_MLIB         6
1089
#define FF_IDCT_ARM          7
1090
#define FF_IDCT_ALTIVEC      8
1091
#define FF_IDCT_SH4          9
1092
#define FF_IDCT_SIMPLEARM    10
1093

    
1094
    /**
1095
     * slice count.
1096
     * - encoding: set by lavc
1097
     * - decoding: set by user (or 0)
1098
     */
1099
    int slice_count;
1100
    /**
1101
     * slice offsets in the frame in bytes.
1102
     * - encoding: set/allocated by lavc
1103
     * - decoding: set/allocated by user (or NULL)
1104
     */
1105
    int *slice_offset;
1106

    
1107
    /**
1108
     * error concealment flags.
1109
     * - encoding: unused
1110
     * - decoding: set by user
1111
     */
1112
    int error_concealment;
1113
#define FF_EC_GUESS_MVS   1
1114
#define FF_EC_DEBLOCK     2
1115

    
1116
    /**
1117
     * dsp_mask could be add used to disable unwanted CPU features
1118
     * CPU features (i.e. MMX, SSE. ...)
1119
     *
1120
     * with FORCE flag you may instead enable given CPU features
1121
     * (Dangerous: usable in case of misdetection, improper usage however will
1122
     * result into program crash)
1123
     */
1124
    unsigned dsp_mask;
1125
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1126
    /* lower 16 bits - CPU features */
1127
#ifdef HAVE_MMX
1128
#define FF_MM_MMX        0x0001 /* standard MMX */
1129
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1130
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1131
#define FF_MM_SSE        0x0008 /* SSE functions */
1132
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1133
#endif /* HAVE_MMX */
1134

    
1135
    /**
1136
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1137
     * - encoding: set by lavc
1138
     * - decoding: set by user
1139
     */
1140
     int bits_per_sample;
1141
    
1142
    /**
1143
     * prediction method (needed for huffyuv).
1144
     * - encoding: set by user
1145
     * - decoding: unused
1146
     */
1147
     int prediction_method;
1148
#define FF_PRED_LEFT   0
1149
#define FF_PRED_PLANE  1
1150
#define FF_PRED_MEDIAN 2
1151
    
1152
    /**
1153
     * sample aspect ratio (0 if unknown).
1154
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1155
     * - encoding: set by user.
1156
     * - decoding: set by lavc.
1157
     */
1158
    AVRational sample_aspect_ratio;
1159

    
1160
    /**
1161
     * the picture in the bitstream.
1162
     * - encoding: set by lavc
1163
     * - decoding: set by lavc
1164
     */
1165
    AVFrame *coded_frame;
1166

    
1167
    /**
1168
     * debug.
1169
     * - encoding: set by user.
1170
     * - decoding: set by user.
1171
     */
1172
    int debug;
1173
#define FF_DEBUG_PICT_INFO 1
1174
#define FF_DEBUG_RC        2
1175
#define FF_DEBUG_BITSTREAM 4
1176
#define FF_DEBUG_MB_TYPE   8
1177
#define FF_DEBUG_QP        16
1178
#define FF_DEBUG_MV        32
1179
#define FF_DEBUG_DCT_COEFF 0x00000040
1180
#define FF_DEBUG_SKIP      0x00000080
1181
#define FF_DEBUG_STARTCODE 0x00000100
1182
#define FF_DEBUG_PTS       0x00000200
1183
#define FF_DEBUG_ER        0x00000400
1184
#define FF_DEBUG_MMCO      0x00000800
1185
#define FF_DEBUG_BUGS      0x00001000
1186
#define FF_DEBUG_VIS_QP    0x00002000
1187
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1188
    
1189
    /**
1190
     * debug.
1191
     * - encoding: set by user.
1192
     * - decoding: set by user.
1193
     */
1194
    int debug_mv;
1195
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1196
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1197
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1198

    
1199
    /**
1200
     * error.
1201
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1202
     * - decoding: unused
1203
     */
1204
    uint64_t error[4];
1205
    
1206
    /**
1207
     * minimum MB quantizer.
1208
     * - encoding: set by user.
1209
     * - decoding: unused
1210
     */
1211
    int mb_qmin;
1212

    
1213
    /**
1214
     * maximum MB quantizer.
1215
     * - encoding: set by user.
1216
     * - decoding: unused
1217
     */
1218
    int mb_qmax;
1219
    
1220
    /**
1221
     * motion estimation compare function.
1222
     * - encoding: set by user.
1223
     * - decoding: unused
1224
     */
1225
    int me_cmp;
1226
    /**
1227
     * subpixel motion estimation compare function.
1228
     * - encoding: set by user.
1229
     * - decoding: unused
1230
     */
1231
    int me_sub_cmp;
1232
    /**
1233
     * macroblock compare function (not supported yet).
1234
     * - encoding: set by user.
1235
     * - decoding: unused
1236
     */
1237
    int mb_cmp;
1238
    /**
1239
     * interlaced dct compare function
1240
     * - encoding: set by user.
1241
     * - decoding: unused
1242
     */
1243
    int ildct_cmp;
1244
#define FF_CMP_SAD  0
1245
#define FF_CMP_SSE  1
1246
#define FF_CMP_SATD 2
1247
#define FF_CMP_DCT  3
1248
#define FF_CMP_PSNR 4
1249
#define FF_CMP_BIT  5
1250
#define FF_CMP_RD   6
1251
#define FF_CMP_ZERO 7
1252
#define FF_CMP_VSAD 8
1253
#define FF_CMP_VSSE 9
1254
#define FF_CMP_NSSE 10
1255
#define FF_CMP_CHROMA 256
1256
    
1257
    /**
1258
     * ME diamond size & shape.
1259
     * - encoding: set by user.
1260
     * - decoding: unused
1261
     */
1262
    int dia_size;
1263

    
1264
    /**
1265
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1266
     * - encoding: set by user.
1267
     * - decoding: unused
1268
     */
1269
    int last_predictor_count;
1270

    
1271
    /**
1272
     * pre pass for motion estimation.
1273
     * - encoding: set by user.
1274
     * - decoding: unused
1275
     */
1276
    int pre_me;
1277

    
1278
    /**
1279
     * motion estimation pre pass compare function.
1280
     * - encoding: set by user.
1281
     * - decoding: unused
1282
     */
1283
    int me_pre_cmp;
1284

    
1285
    /**
1286
     * ME pre pass diamond size & shape.
1287
     * - encoding: set by user.
1288
     * - decoding: unused
1289
     */
1290
    int pre_dia_size;
1291

    
1292
    /**
1293
     * subpel ME quality.
1294
     * - encoding: set by user.
1295
     * - decoding: unused
1296
     */
1297
    int me_subpel_quality;
1298

    
1299
    /**
1300
     * callback to negotiate the pixelFormat.
1301
     * @param fmt is the list of formats which are supported by the codec,
1302
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1303
     * the first is allways the native one
1304
     * @return the choosen format
1305
     * - encoding: unused
1306
     * - decoding: set by user, if not set then the native format will always be choosen
1307
     */
1308
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1309

    
1310
    /**
1311
     * DTG active format information (additionnal aspect ratio
1312
     * information only used in DVB MPEG2 transport streams). 0 if
1313
     * not set.
1314
     * 
1315
     * - encoding: unused.
1316
     * - decoding: set by decoder 
1317
     */
1318
    int dtg_active_format;
1319
#define FF_DTG_AFD_SAME         8
1320
#define FF_DTG_AFD_4_3          9
1321
#define FF_DTG_AFD_16_9         10
1322
#define FF_DTG_AFD_14_9         11
1323
#define FF_DTG_AFD_4_3_SP_14_9  13
1324
#define FF_DTG_AFD_16_9_SP_14_9 14
1325
#define FF_DTG_AFD_SP_4_3       15
1326

    
1327
    /**
1328
     * Maximum motion estimation search range in subpel units.
1329
     * if 0 then no limit
1330
     * 
1331
     * - encoding: set by user.
1332
     * - decoding: unused.
1333
     */
1334
    int me_range;
1335

    
1336
    /**
1337
     * frame_rate_base.
1338
     * for variable fps this is 1
1339
     * - encoding: set by user.
1340
     * - decoding: set by lavc.
1341
     * @todo move this after frame_rate
1342
     */
1343

    
1344
    int frame_rate_base;
1345
    /**
1346
     * intra quantizer bias.
1347
     * - encoding: set by user.
1348
     * - decoding: unused
1349
     */
1350
    int intra_quant_bias;
1351
#define FF_DEFAULT_QUANT_BIAS 999999
1352
    
1353
    /**
1354
     * inter quantizer bias.
1355
     * - encoding: set by user.
1356
     * - decoding: unused
1357
     */
1358
    int inter_quant_bias;
1359

    
1360
    /**
1361
     * color table ID.
1362
     * - encoding: unused.
1363
     * - decoding: which clrtable should be used for 8bit RGB images
1364
     *             table have to be stored somewhere FIXME
1365
     */
1366
    int color_table_id;
1367
    
1368
    /**
1369
     * internal_buffer count. 
1370
     * Dont touch, used by lavc default_get_buffer()
1371
     */
1372
    int internal_buffer_count;
1373
    
1374
    /**
1375
     * internal_buffers. 
1376
     * Dont touch, used by lavc default_get_buffer()
1377
     */
1378
    void *internal_buffer;
1379

    
1380
#define FF_LAMBDA_SHIFT 7
1381
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1382
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1383
#define FF_LAMBDA_MAX (256*128-1)
1384

    
1385
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1386
    /**
1387
     * global quality for codecs which cannot change it per frame.
1388
     * this should be proportional to MPEG1/2/4 qscale.
1389
     * - encoding: set by user.
1390
     * - decoding: unused
1391
     */
1392
    int global_quality;
1393
    
1394
#define FF_CODER_TYPE_VLC   0
1395
#define FF_CODER_TYPE_AC    1
1396
    /**
1397
     * coder type
1398
     * - encoding: set by user.
1399
     * - decoding: unused
1400
     */
1401
    int coder_type;
1402

    
1403
    /**
1404
     * context model
1405
     * - encoding: set by user.
1406
     * - decoding: unused
1407
     */
1408
    int context_model;
1409
    
1410
    /**
1411
     * slice flags
1412
     * - encoding: unused
1413
     * - decoding: set by user.
1414
     */
1415
    int slice_flags;
1416
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1417
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1418
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1419

    
1420
    /**
1421
     * XVideo Motion Acceleration
1422
     * - encoding: forbidden
1423
     * - decoding: set by decoder
1424
     */
1425
    int xvmc_acceleration;
1426
    
1427
    /**
1428
     * macroblock decision mode
1429
     * - encoding: set by user.
1430
     * - decoding: unused
1431
     */
1432
    int mb_decision;
1433
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1434
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1435
#define FF_MB_DECISION_RD     2        ///< rate distoration
1436

    
1437
    /**
1438
     * custom intra quantization matrix
1439
     * - encoding: set by user, can be NULL
1440
     * - decoding: set by lavc
1441
     */
1442
    uint16_t *intra_matrix;
1443

    
1444
    /**
1445
     * custom inter quantization matrix
1446
     * - encoding: set by user, can be NULL
1447
     * - decoding: set by lavc
1448
     */
1449
    uint16_t *inter_matrix;
1450
    
1451
    /**
1452
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1453
     * this is used to workaround some encoder bugs
1454
     * - encoding: unused
1455
     * - decoding: set by user, will be converted to upper case by lavc during init
1456
     */
1457
    unsigned int stream_codec_tag;
1458

    
1459
    /**
1460
     * scene change detection threshold.
1461
     * 0 is default, larger means fewer detected scene changes
1462
     * - encoding: set by user.
1463
     * - decoding: unused
1464
     */
1465
    int scenechange_threshold;
1466

    
1467
    /**
1468
     * minimum lagrange multipler
1469
     * - encoding: set by user.
1470
     * - decoding: unused
1471
     */
1472
    int lmin;
1473

    
1474
    /**
1475
     * maximum lagrange multipler
1476
     * - encoding: set by user.
1477
     * - decoding: unused
1478
     */
1479
    int lmax;
1480

    
1481
    /**
1482
     * Palette control structure
1483
     * - encoding: ??? (no palette-enabled encoder yet)
1484
     * - decoding: set by user.
1485
     */
1486
    struct AVPaletteControl *palctrl;
1487

    
1488
    /**
1489
     * noise reduction strength
1490
     * - encoding: set by user.
1491
     * - decoding: unused
1492
     */
1493
    int noise_reduction;
1494
    
1495
    /**
1496
     * called at the beginning of a frame to get cr buffer for it.
1497
     * buffer type (size, hints) must be the same. lavc won't check it.
1498
     * lavc will pass previous buffer in pic, function should return
1499
     * same buffer or new buffer with old frame "painted" into it.
1500
     * if pic.data[0] == NULL must behave like get_buffer().
1501
     * - encoding: unused
1502
     * - decoding: set by lavc, user can override
1503
     */
1504
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1505

    
1506
    /**
1507
     * number of bits which should be loaded into the rc buffer before decoding starts
1508
     * - encoding: set by user.
1509
     * - decoding: unused
1510
     */
1511
    int rc_initial_buffer_occupancy;
1512

    
1513
    /**
1514
     *
1515
     * - encoding: set by user.
1516
     * - decoding: unused
1517
     */
1518
    int inter_threshold;
1519

    
1520
    /**
1521
     * CODEC_FLAG2_*.
1522
     * - encoding: set by user.
1523
     * - decoding: set by user.
1524
     */
1525
    int flags2;
1526

    
1527
    /**
1528
     * simulates errors in the bitstream to test error concealment.
1529
     * - encoding: set by user.
1530
     * - decoding: unused.
1531
     */
1532
    int error_rate;
1533
    
1534
    /**
1535
     * MP3 antialias algorithm, see FF_AA_* below.
1536
     * - encoding: unused
1537
     * - decoding: set by user
1538
     */
1539
    int antialias_algo;
1540
#define FF_AA_AUTO    0
1541
#define FF_AA_FASTINT 1 //not implemented yet
1542
#define FF_AA_INT     2
1543
#define FF_AA_FLOAT   3
1544
    /**
1545
     * Quantizer noise shaping.
1546
     * - encoding: set by user
1547
     * - decoding: unused
1548
     */
1549
    int quantizer_noise_shaping;
1550

    
1551
    /**
1552
     * Thread count.
1553
     * is used to decide how many independant tasks should be passed to execute()
1554
     * - encoding: set by user
1555
     * - decoding: set by user
1556
     */
1557
    int thread_count;
1558
    
1559
    /**
1560
     * the codec may call this to execute several independant things. it will return only after
1561
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1562
     * default implementation will execute the parts serially
1563
     * @param count the number of things to execute
1564
     * - encoding: set by lavc, user can override
1565
     * - decoding: set by lavc, user can override
1566
     */
1567
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1568
    
1569
    /**
1570
     * Thread opaque.
1571
     * can be used by execute() to store some per AVCodecContext stuff.
1572
     * - encoding: set by execute()
1573
     * - decoding: set by execute()
1574
     */
1575
    void *thread_opaque;
1576

    
1577
    /**
1578
     * Motion estimation threshold. under which no motion estimation is 
1579
     * performed, but instead the user specified motion vectors are used
1580
     * 
1581
     * - encoding: set by user
1582
     * - decoding: unused
1583
     */
1584
     int me_threshold;
1585

    
1586
    /**
1587
     * Macroblock threshold. under which the user specified macroblock types will be used
1588
     * - encoding: set by user
1589
     * - decoding: unused
1590
     */
1591
     int mb_threshold;
1592

    
1593
    /**
1594
     * precision of the intra dc coefficient - 8.
1595
     * - encoding: set by user
1596
     * - decoding: unused
1597
     */
1598
     int intra_dc_precision;
1599

    
1600
    /**
1601
     * noise vs. sse weight for the nsse comparsion function.
1602
     * - encoding: set by user
1603
     * - decoding: unused
1604
     */
1605
     int nsse_weight;
1606
} AVCodecContext;
1607

    
1608

    
1609
/**
1610
 * AVOption.
1611
 */
1612
typedef struct AVOption {
1613
    /** options' name */
1614
    const char *name; /* if name is NULL, it indicates a link to next */
1615
    /** short English text help or const struct AVOption* subpointer */
1616
    const char *help; //        const struct AVOption* sub;
1617
    /** offset to context structure where the parsed value should be stored */
1618
    int offset;
1619
    /** options' type */
1620
    int type;
1621
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1622
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1623
#define FF_OPT_TYPE_INT 3       ///< integer
1624
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1625
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1626
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1627
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1628
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1629
    /** min value  (min == max   ->  no limits) */
1630
    double min;
1631
    /** maximum value for double/int */
1632
    double max;
1633
    /** default boo [0,1]l/double/int value */
1634
    double defval;
1635
    /**
1636
     * default string value (with optional semicolon delimited extra option-list
1637
     * i.e.   option1;option2;option3
1638
     * defval might select other then first argument as default
1639
     */
1640
    const char *defstr;
1641
#define FF_OPT_MAX_DEPTH 10
1642
} AVOption;
1643

    
1644
/**
1645
 * Parse option(s) and sets fields in passed structure
1646
 * @param strct        structure where the parsed results will be written
1647
 * @param list  list with AVOptions
1648
 * @param opts        string with options for parsing
1649
 */
1650
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1651

    
1652

    
1653
/**
1654
 * AVCodec.
1655
 */
1656
typedef struct AVCodec {
1657
    const char *name;
1658
    enum CodecType type;
1659
    int id;
1660
    int priv_data_size;
1661
    int (*init)(AVCodecContext *);
1662
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1663
    int (*close)(AVCodecContext *);
1664
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1665
                  uint8_t *buf, int buf_size);
1666
    int capabilities;
1667
    const AVOption *options;
1668
    struct AVCodec *next;
1669
    void (*flush)(AVCodecContext *);
1670
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1671
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1672
} AVCodec;
1673

    
1674
/**
1675
 * four components are given, that's all.
1676
 * the last component is alpha
1677
 */
1678
typedef struct AVPicture {
1679
    uint8_t *data[4];
1680
    int linesize[4];       ///< number of bytes per line
1681
} AVPicture;
1682

    
1683
/**
1684
 * AVPaletteControl
1685
 * This structure defines a method for communicating palette changes
1686
 * between and demuxer and a decoder.
1687
 */
1688
#define AVPALETTE_SIZE 1024
1689
#define AVPALETTE_COUNT 256
1690
typedef struct AVPaletteControl {
1691

    
1692
    /* demuxer sets this to 1 to indicate the palette has changed;
1693
     * decoder resets to 0 */
1694
    int palette_changed;
1695

    
1696
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1697
     * the individual palette components should be on a 8-bit scale; if
1698
     * the palette data comes from a IBM VGA native format, the component
1699
     * data is probably 6 bits in size and needs to be scaled */
1700
    unsigned int palette[AVPALETTE_COUNT];
1701

    
1702
} AVPaletteControl;
1703

    
1704
extern AVCodec ac3_encoder;
1705
extern AVCodec mp2_encoder;
1706
extern AVCodec mp3lame_encoder;
1707
extern AVCodec oggvorbis_encoder;
1708
extern AVCodec faac_encoder;
1709
extern AVCodec mpeg1video_encoder;
1710
extern AVCodec mpeg2video_encoder;
1711
extern AVCodec h263_encoder;
1712
extern AVCodec h263p_encoder;
1713
extern AVCodec flv_encoder;
1714
extern AVCodec rv10_encoder;
1715
extern AVCodec rv20_encoder;
1716
extern AVCodec dvvideo_encoder;
1717
extern AVCodec mjpeg_encoder;
1718
extern AVCodec ljpeg_encoder;
1719
extern AVCodec mpeg4_encoder;
1720
extern AVCodec msmpeg4v1_encoder;
1721
extern AVCodec msmpeg4v2_encoder;
1722
extern AVCodec msmpeg4v3_encoder;
1723
extern AVCodec wmv1_encoder;
1724
extern AVCodec wmv2_encoder;
1725
extern AVCodec huffyuv_encoder;
1726
extern AVCodec h264_encoder;
1727
extern AVCodec asv1_encoder;
1728
extern AVCodec asv2_encoder;
1729
extern AVCodec vcr1_encoder;
1730
extern AVCodec ffv1_encoder;
1731
extern AVCodec mdec_encoder;
1732
extern AVCodec zlib_encoder;
1733
extern AVCodec svq1_encoder;
1734

    
1735
extern AVCodec h263_decoder;
1736
extern AVCodec h261_decoder;
1737
extern AVCodec mpeg4_decoder;
1738
extern AVCodec msmpeg4v1_decoder;
1739
extern AVCodec msmpeg4v2_decoder;
1740
extern AVCodec msmpeg4v3_decoder;
1741
extern AVCodec wmv1_decoder;
1742
extern AVCodec wmv2_decoder;
1743
extern AVCodec mpeg1video_decoder;
1744
extern AVCodec mpeg2video_decoder;
1745
extern AVCodec mpegvideo_decoder;
1746
extern AVCodec mpeg_xvmc_decoder;
1747
extern AVCodec h263i_decoder;
1748
extern AVCodec flv_decoder;
1749
extern AVCodec rv10_decoder;
1750
extern AVCodec rv20_decoder;
1751
extern AVCodec svq1_decoder;
1752
extern AVCodec svq3_decoder;
1753
extern AVCodec dvvideo_decoder;
1754
extern AVCodec wmav1_decoder;
1755
extern AVCodec wmav2_decoder;
1756
extern AVCodec mjpeg_decoder;
1757
extern AVCodec mjpegb_decoder;
1758
extern AVCodec sp5x_decoder;
1759
extern AVCodec mp2_decoder;
1760
extern AVCodec mp3_decoder;
1761
extern AVCodec mace3_decoder;
1762
extern AVCodec mace6_decoder;
1763
extern AVCodec huffyuv_decoder;
1764
extern AVCodec oggvorbis_decoder;
1765
extern AVCodec cyuv_decoder;
1766
extern AVCodec h264_decoder;
1767
extern AVCodec indeo3_decoder;
1768
extern AVCodec vp3_decoder;
1769
extern AVCodec theora_decoder;
1770
extern AVCodec amr_nb_decoder;
1771
extern AVCodec amr_nb_encoder;
1772
extern AVCodec amr_wb_encoder;
1773
extern AVCodec amr_wb_decoder;
1774
extern AVCodec aac_decoder;
1775
extern AVCodec mpeg4aac_decoder;
1776
extern AVCodec asv1_decoder;
1777
extern AVCodec asv2_decoder;
1778
extern AVCodec vcr1_decoder;
1779
extern AVCodec cljr_decoder;
1780
extern AVCodec ffv1_decoder;
1781
extern AVCodec fourxm_decoder;
1782
extern AVCodec mdec_decoder;
1783
extern AVCodec roq_decoder;
1784
extern AVCodec interplay_video_decoder;
1785
extern AVCodec xan_wc3_decoder;
1786
extern AVCodec rpza_decoder;
1787
extern AVCodec cinepak_decoder;
1788
extern AVCodec msrle_decoder;
1789
extern AVCodec msvideo1_decoder;
1790
extern AVCodec vqa_decoder;
1791
extern AVCodec idcin_decoder;
1792
extern AVCodec eightbps_decoder;
1793
extern AVCodec smc_decoder;
1794
extern AVCodec flic_decoder;
1795
extern AVCodec vmdvideo_decoder;
1796
extern AVCodec vmdaudio_decoder;
1797
extern AVCodec truemotion1_decoder;
1798
extern AVCodec mszh_decoder;
1799
extern AVCodec zlib_decoder;
1800
extern AVCodec ra_144_decoder;
1801
extern AVCodec ra_288_decoder;
1802
extern AVCodec roq_dpcm_decoder;
1803
extern AVCodec interplay_dpcm_decoder;
1804
extern AVCodec xan_dpcm_decoder;
1805
extern AVCodec qtrle_decoder;
1806
extern AVCodec flac_decoder;
1807

    
1808
/* pcm codecs */
1809
#define PCM_CODEC(id, name) \
1810
extern AVCodec name ## _decoder; \
1811
extern AVCodec name ## _encoder
1812

    
1813
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1814
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1815
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1816
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1817
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1818
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1819
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1820
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1821

    
1822
/* adpcm codecs */
1823

    
1824
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1825
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1826
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1827
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1828
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1829
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1830
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1831
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1832
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1833
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1834
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1835
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1836

    
1837
#undef PCM_CODEC
1838

    
1839
/* dummy raw video codec */
1840
extern AVCodec rawvideo_encoder;
1841
extern AVCodec rawvideo_decoder;
1842

    
1843
/* the following codecs use external GPL libs */
1844
extern AVCodec ac3_decoder;
1845

    
1846
/* resample.c */
1847

    
1848
struct ReSampleContext;
1849

    
1850
typedef struct ReSampleContext ReSampleContext;
1851

    
1852
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1853
                                     int output_rate, int input_rate);
1854
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1855
void audio_resample_close(ReSampleContext *s);
1856

    
1857
/* YUV420 format is assumed ! */
1858

    
1859
struct ImgReSampleContext;
1860

    
1861
typedef struct ImgReSampleContext ImgReSampleContext;
1862

    
1863
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1864
                                      int input_width, int input_height);
1865

    
1866
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1867
                                      int iwidth, int iheight,
1868
                                      int topBand, int bottomBand,
1869
                                      int leftBand, int rightBand,
1870
                                      int padtop, int padbottom,
1871
                                      int padleft, int padright);
1872

    
1873

    
1874
void img_resample(ImgReSampleContext *s, 
1875
                  AVPicture *output, const AVPicture *input);
1876

    
1877
void img_resample_close(ImgReSampleContext *s);
1878

    
1879
/**
1880
 * Allocate memory for a picture.  Call avpicture_free to free it.
1881
 *
1882
 * @param picture the picture to be filled in.
1883
 * @param pix_fmt the format of the picture.
1884
 * @param width the width of the picture.
1885
 * @param height the height of the picture.
1886
 * @return 0 if successful, -1 if not.
1887
 */
1888
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1889

    
1890
/* Free a picture previously allocated by avpicture_alloc. */
1891
void avpicture_free(AVPicture *picture);
1892

    
1893
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1894
                   int pix_fmt, int width, int height);
1895
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1896
                     unsigned char *dest, int dest_size);
1897
int avpicture_get_size(int pix_fmt, int width, int height);
1898
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1899
const char *avcodec_get_pix_fmt_name(int pix_fmt);
1900
enum PixelFormat avcodec_get_pix_fmt(const char* name);
1901

    
1902
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
1903
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
1904
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
1905
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
1906
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
1907
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1908

    
1909
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1910
                             int has_alpha);
1911
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1912
                              int has_alpha, int *loss_ptr);
1913

    
1914
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
1915
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
1916
int img_get_alpha_info(const AVPicture *src,
1917
                       int pix_fmt, int width, int height);
1918

    
1919
/* convert among pixel formats */
1920
int img_convert(AVPicture *dst, int dst_pix_fmt,
1921
                const AVPicture *src, int pix_fmt, 
1922
                int width, int height);
1923

    
1924
/* deinterlace a picture */
1925
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1926
                          int pix_fmt, int width, int height);
1927

    
1928
/* external high level API */
1929

    
1930
extern AVCodec *first_avcodec;
1931

    
1932
/* returns LIBAVCODEC_VERSION_INT constant */
1933
unsigned avcodec_version(void);
1934
/* returns LIBAVCODEC_BUILD constant */
1935
unsigned avcodec_build(void);
1936
void avcodec_init(void);
1937

    
1938
void register_avcodec(AVCodec *format);
1939
AVCodec *avcodec_find_encoder(enum CodecID id);
1940
AVCodec *avcodec_find_encoder_by_name(const char *name);
1941
AVCodec *avcodec_find_decoder(enum CodecID id);
1942
AVCodec *avcodec_find_decoder_by_name(const char *name);
1943
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1944

    
1945
void avcodec_get_context_defaults(AVCodecContext *s);
1946
AVCodecContext *avcodec_alloc_context(void);
1947
void avcodec_get_frame_defaults(AVFrame *pic);
1948
AVFrame *avcodec_alloc_frame(void);
1949

    
1950
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1951
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1952
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
1953
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
1954
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
1955

    
1956
int avcodec_thread_init(AVCodecContext *s, int thread_count);
1957
void avcodec_thread_free(AVCodecContext *s);
1958
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
1959
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
1960
//FIXME func typedef
1961

    
1962
/**
1963
 * opens / inits the AVCodecContext.
1964
 * not thread save!
1965
 */
1966
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1967

    
1968
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
1969
                         int *frame_size_ptr,
1970
                         uint8_t *buf, int buf_size);
1971
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
1972
                         int *got_picture_ptr,
1973
                         uint8_t *buf, int buf_size);
1974
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
1975
                        int *data_size_ptr,
1976
                        uint8_t *buf, int buf_size);
1977
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1978
                         const short *samples);
1979
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1980
                         const AVFrame *pict);
1981

    
1982
int avcodec_close(AVCodecContext *avctx);
1983

    
1984
void avcodec_register_all(void);
1985

    
1986
void avcodec_flush_buffers(AVCodecContext *avctx);
1987

    
1988
/* misc usefull functions */
1989

    
1990
/**
1991
 * returns a single letter to describe the picture type
1992
 */
1993
char av_get_pict_type_char(int pict_type);
1994

    
1995
/**
1996
 * reduce a fraction.
1997
 * this is usefull for framerate calculations
1998
 * @param max the maximum allowed for dst_nom & dst_den
1999
 * @return 1 if exact, 0 otherwise
2000
 */
2001
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2002

    
2003
/**
2004
 * rescale a 64bit integer.
2005
 * a simple a*b/c isnt possible as it can overflow
2006
 */
2007
int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2008

    
2009

    
2010
/**
2011
 * Interface for 0.5.0 version
2012
 *
2013
 * do not even think about it's usage for this moment
2014
 */
2015

    
2016
typedef struct {
2017
    /// compressed size used from given memory buffer
2018
    int size;
2019
    /// I/P/B frame type
2020
    int frame_type;
2021
} avc_enc_result_t;
2022

    
2023
/**
2024
 * Commands
2025
 * order can't be changed - once it was defined
2026
 */
2027
typedef enum {
2028
    // general commands
2029
    AVC_OPEN_BY_NAME = 0xACA000,
2030
    AVC_OPEN_BY_CODEC_ID,
2031
    AVC_OPEN_BY_FOURCC,
2032
    AVC_CLOSE,
2033

    
2034
    AVC_FLUSH,
2035
    // pin - struct { uint8_t* src, uint_t src_size }
2036
    // pout - struct { AVPicture* img, consumed_bytes,
2037
    AVC_DECODE,
2038
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
2039
    // pout - uint_t used_from_dest_size
2040
    AVC_ENCODE, 
2041

    
2042
    // query/get video commands
2043
    AVC_GET_VERSION = 0xACB000,
2044
    AVC_GET_WIDTH,
2045
    AVC_GET_HEIGHT,
2046
    AVC_GET_DELAY,
2047
    AVC_GET_QUANT_TABLE,
2048
    // ...
2049

    
2050
    // query/get audio commands
2051
    AVC_GET_FRAME_SIZE = 0xABC000,
2052

    
2053
    // maybe define some simple structure which
2054
    // might be passed to the user - but they can't
2055
    // contain any codec specific parts and these
2056
    // calls are usualy necessary only few times
2057

    
2058
    // set video commands
2059
    AVC_SET_WIDTH = 0xACD000,
2060
    AVC_SET_HEIGHT,
2061

    
2062
    // set video encoding commands
2063
    AVC_SET_FRAME_RATE = 0xACD800,
2064
    AVC_SET_QUALITY,
2065
    AVC_SET_HURRY_UP,
2066

    
2067
    // set audio commands
2068
    AVC_SET_SAMPLE_RATE = 0xACE000,
2069
    AVC_SET_CHANNELS,
2070

    
2071
} avc_cmd_t;
2072

    
2073
/**
2074
 * \param handle  allocated private structure by libavcodec
2075
 *                for initialization pass NULL - will be returned pout
2076
 *                user is supposed to know nothing about its structure
2077
 * \param cmd     type of operation to be performed
2078
 * \param pint    input parameter
2079
 * \param pout    output parameter
2080
 *
2081
 * \returns  command status - eventually for query command it might return
2082
 * integer resulting value
2083
 */
2084
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2085

    
2086
/* frame parsing */
2087
typedef struct AVCodecParserContext {
2088
    void *priv_data;
2089
    struct AVCodecParser *parser;
2090
    int64_t frame_offset; /* offset of the current frame */
2091
    int64_t cur_offset; /* current offset 
2092
                           (incremented by each av_parser_parse()) */
2093
    int64_t last_frame_offset; /* offset of the last frame */
2094
    /* video info */
2095
    int pict_type; /* XXX: put it back in AVCodecContext */
2096
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2097
    int64_t pts;     /* pts of the current frame */
2098
    int64_t dts;     /* dts of the current frame */
2099

    
2100
    /* private data */
2101
    int64_t last_pts;
2102
    int64_t last_dts;
2103
    int fetch_timestamp;
2104

    
2105
#define AV_PARSER_PTS_NB 4
2106
    int cur_frame_start_index;
2107
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2108
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2109
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2110
} AVCodecParserContext;
2111

    
2112
typedef struct AVCodecParser {
2113
    int codec_ids[3]; /* several codec IDs are permitted */
2114
    int priv_data_size;
2115
    int (*parser_init)(AVCodecParserContext *s);
2116
    int (*parser_parse)(AVCodecParserContext *s, 
2117
                        AVCodecContext *avctx,
2118
                        uint8_t **poutbuf, int *poutbuf_size, 
2119
                        const uint8_t *buf, int buf_size);
2120
    void (*parser_close)(AVCodecParserContext *s);
2121
    struct AVCodecParser *next;
2122
} AVCodecParser;
2123

    
2124
extern AVCodecParser *av_first_parser;
2125

    
2126
void av_register_codec_parser(AVCodecParser *parser);
2127
AVCodecParserContext *av_parser_init(int codec_id);
2128
int av_parser_parse(AVCodecParserContext *s, 
2129
                    AVCodecContext *avctx,
2130
                    uint8_t **poutbuf, int *poutbuf_size, 
2131
                    const uint8_t *buf, int buf_size,
2132
                    int64_t pts, int64_t dts);
2133
void av_parser_close(AVCodecParserContext *s);
2134

    
2135
extern AVCodecParser mpegvideo_parser;
2136
extern AVCodecParser mpeg4video_parser;
2137
extern AVCodecParser h261_parser;
2138
extern AVCodecParser h263_parser;
2139
extern AVCodecParser h264_parser;
2140
extern AVCodecParser mpegaudio_parser;
2141
extern AVCodecParser ac3_parser;
2142

    
2143
/* memory */
2144
void *av_malloc(unsigned int size);
2145
void *av_mallocz(unsigned int size);
2146
void *av_realloc(void *ptr, unsigned int size);
2147
void av_free(void *ptr);
2148
char *av_strdup(const char *s);
2149
void av_freep(void *ptr);
2150
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2151
/* for static data only */
2152
/* call av_free_static to release all staticaly allocated tables */
2153
void av_free_static(void);
2154
void *av_mallocz_static(unsigned int size);
2155

    
2156
/* add by bero : in adx.c */
2157
int is_adx(const unsigned char *buf,size_t bufsize);
2158

    
2159
void img_copy(AVPicture *dst, const AVPicture *src,
2160
              int pix_fmt, int width, int height);
2161

    
2162
/* av_log API */
2163

    
2164
#include <stdarg.h>
2165

    
2166
#define AV_LOG_QUIET -1
2167
#define AV_LOG_ERROR 0
2168
#define AV_LOG_INFO 1
2169
#define AV_LOG_DEBUG 2
2170

    
2171
#ifdef __GNUC__
2172
extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2173
#else
2174
extern void av_log(void*, int level, const char *fmt, ...);
2175
#endif
2176

    
2177
extern void av_vlog(void*, int level, const char *fmt, va_list);
2178
extern int av_log_get_level(void);
2179
extern void av_log_set_level(int);
2180
extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2181

    
2182
/* endian macros */
2183
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2184
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2185
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2186
                   (((uint8_t*)(x))[1] << 16) | \
2187
                   (((uint8_t*)(x))[2] << 8) | \
2188
                    ((uint8_t*)(x))[3])
2189
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2190
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2191
                   (((uint8_t*)(x))[2] << 16) | \
2192
                   (((uint8_t*)(x))[1] << 8) | \
2193
                    ((uint8_t*)(x))[0])
2194
#endif
2195

    
2196
#ifdef __cplusplus
2197
}
2198
#endif
2199

    
2200
#endif /* AVCODEC_H */