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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       4713
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#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
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#define LIBAVCODEC_VERSION     FFMPEG_VERSION
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#define AV_STRINGIFY(s)        AV_TOSTRING(s)
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#define AV_TOSTRING(s) #s
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#define LIBAVCODEC_IDENT        "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
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#define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
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#define AV_TIME_BASE 1000000
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enum CodecID {
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    CODEC_ID_NONE, 
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    CODEC_ID_MPEG1VIDEO,
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    CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
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    CODEC_ID_MPEG2VIDEO_XVMC,
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    CODEC_ID_H263,
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    CODEC_ID_RV10,
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    CODEC_ID_RV20,
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    CODEC_ID_MP2,
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    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
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    CODEC_ID_VORBIS,
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    CODEC_ID_AC3,
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    CODEC_ID_MJPEG,
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    CODEC_ID_MJPEGB,
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    CODEC_ID_LJPEG,
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    CODEC_ID_SP5X,
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    CODEC_ID_MPEG4,
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    CODEC_ID_RAWVIDEO,
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    CODEC_ID_MSMPEG4V1,
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    CODEC_ID_MSMPEG4V2,
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    CODEC_ID_MSMPEG4V3,
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    CODEC_ID_WMV1,
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    CODEC_ID_WMV2,
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    CODEC_ID_H263P,
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    CODEC_ID_H263I,
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    CODEC_ID_FLV1,
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    CODEC_ID_SVQ1,
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    CODEC_ID_SVQ3,
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    CODEC_ID_DVVIDEO,
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    CODEC_ID_DVAUDIO,
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    CODEC_ID_WMAV1,
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    CODEC_ID_WMAV2,
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    CODEC_ID_MACE3,
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    CODEC_ID_MACE6,
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    CODEC_ID_HUFFYUV,
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    CODEC_ID_CYUV,
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    CODEC_ID_H264,
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    CODEC_ID_INDEO3,
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    CODEC_ID_VP3,
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    CODEC_ID_THEORA,
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    CODEC_ID_AAC,
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    CODEC_ID_MPEG4AAC,
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    CODEC_ID_ASV1,
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    CODEC_ID_ASV2,
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    CODEC_ID_FFV1,
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    CODEC_ID_4XM,
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    CODEC_ID_VCR1,
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    CODEC_ID_CLJR,
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    CODEC_ID_MDEC,
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    CODEC_ID_ROQ,
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    CODEC_ID_INTERPLAY_VIDEO,
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    CODEC_ID_XAN_WC3,
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    CODEC_ID_XAN_WC4,
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    CODEC_ID_RPZA,
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    CODEC_ID_CINEPAK,
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    CODEC_ID_WS_VQA,
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    CODEC_ID_MSRLE,
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    CODEC_ID_MSVIDEO1,
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    CODEC_ID_IDCIN,
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    CODEC_ID_8BPS,
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    CODEC_ID_SMC,
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    CODEC_ID_FLIC,
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    CODEC_ID_TRUEMOTION1,
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    CODEC_ID_VMDVIDEO,
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    CODEC_ID_VMDAUDIO,
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    CODEC_ID_MSZH,
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    CODEC_ID_ZLIB,
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    CODEC_ID_QTRLE,
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    /* various pcm "codecs" */
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    CODEC_ID_PCM_S16LE,
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    CODEC_ID_PCM_S16BE,
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    CODEC_ID_PCM_U16LE,
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    CODEC_ID_PCM_U16BE,
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    CODEC_ID_PCM_S8,
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    CODEC_ID_PCM_U8,
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    CODEC_ID_PCM_MULAW,
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    CODEC_ID_PCM_ALAW,
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    /* various adpcm codecs */
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    CODEC_ID_ADPCM_IMA_QT,
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    CODEC_ID_ADPCM_IMA_WAV,
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    CODEC_ID_ADPCM_IMA_DK3,
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    CODEC_ID_ADPCM_IMA_DK4,
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    CODEC_ID_ADPCM_IMA_WS,
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    CODEC_ID_ADPCM_IMA_SMJPEG,
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    CODEC_ID_ADPCM_MS,
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    CODEC_ID_ADPCM_4XM,
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    CODEC_ID_ADPCM_XA,
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    CODEC_ID_ADPCM_ADX,
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    CODEC_ID_ADPCM_EA,
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    CODEC_ID_ADPCM_G726,
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        /* AMR */
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    CODEC_ID_AMR_NB,
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    CODEC_ID_AMR_WB,
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    /* RealAudio codecs*/
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    CODEC_ID_RA_144,
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    CODEC_ID_RA_288,
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    /* various DPCM codecs */
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    CODEC_ID_ROQ_DPCM,
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    CODEC_ID_INTERPLAY_DPCM,
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    CODEC_ID_XAN_DPCM,
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    CODEC_ID_FLAC,
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    CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
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                         stream (only used by libavformat) */
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};
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/* CODEC_ID_MP3LAME is absolete */
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#define CODEC_ID_MP3LAME CODEC_ID_MP3
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enum CodecType {
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    CODEC_TYPE_UNKNOWN = -1,
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    CODEC_TYPE_VIDEO,
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    CODEC_TYPE_AUDIO,
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    CODEC_TYPE_DATA,
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};
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/**
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 * Pixel format. Notes: 
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 *
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 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
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 * color is put together as:
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 *  (A << 24) | (R << 16) | (G << 8) | B
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 * This is stored as BGRA on little endian CPU architectures and ARGB on
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 * big endian CPUs.
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 *
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 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
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 * image data is stored in AVFrame.data[0]. The palette is transported in
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 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
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 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
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 * also endian-specific). Note also that the individual RGB palette
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 * components stored in AVFrame.data[1] should be in the range 0..255.
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 * This is important as many custom PAL8 video codecs that were designed
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 * to run on the IBM VGA graphics adapter use 6-bit palette components.
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 */
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enum PixelFormat {
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    PIX_FMT_YUV420P,   ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
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    PIX_FMT_YUV422,    
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    PIX_FMT_RGB24,     ///< Packed pixel, 3 bytes per pixel, RGBRGB...
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    PIX_FMT_BGR24,     ///< Packed pixel, 3 bytes per pixel, BGRBGR...
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    PIX_FMT_YUV422P,   ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
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    PIX_FMT_YUV444P,   ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
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    PIX_FMT_RGBA32,    ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
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    PIX_FMT_YUV410P,   ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
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    PIX_FMT_YUV411P,   ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
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    PIX_FMT_RGB565,    ///< always stored in cpu endianness 
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    PIX_FMT_RGB555,    ///< always stored in cpu endianness, most significant bit to 1 
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    PIX_FMT_GRAY8,
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    PIX_FMT_MONOWHITE, ///< 0 is white 
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    PIX_FMT_MONOBLACK, ///< 0 is black 
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    PIX_FMT_PAL8,      ///< 8 bit with RGBA palette 
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    PIX_FMT_YUVJ420P,  ///< Planar YUV 4:2:0 full scale (jpeg)
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    PIX_FMT_YUVJ422P,  ///< Planar YUV 4:2:2 full scale (jpeg)
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    PIX_FMT_YUVJ444P,  ///< Planar YUV 4:4:4 full scale (jpeg)
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    PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
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    PIX_FMT_XVMC_MPEG2_IDCT,
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    PIX_FMT_NB,
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};
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/* currently unused, may be used if 24/32 bits samples ever supported */
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enum SampleFormat {
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    SAMPLE_FMT_S16 = 0,         ///< signed 16 bits 
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};
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/* in bytes */
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#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
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/**
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 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
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 * this is mainly needed because some optimized bitstream readers read 
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 * 32 or 64 bit at once and could read over the end<br>
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 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
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 * MPEG bitstreams could cause overread and segfault
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 */
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#define FF_INPUT_BUFFER_PADDING_SIZE 8
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/* motion estimation type, EPZS by default */
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enum Motion_Est_ID {
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    ME_ZERO = 1,
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    ME_FULL,
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    ME_LOG,
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    ME_PHODS,
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    ME_EPZS,
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    ME_X1
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};
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typedef struct RcOverride{
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    int start_frame;
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    int end_frame;
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    int qscale; // if this is 0 then quality_factor will be used instead
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    float quality_factor;
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} RcOverride;
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/* only for ME compatiblity with old apps */
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extern int motion_estimation_method;
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#define FF_MAX_B_FRAMES 8
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/* encoding support
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   these flags can be passed in AVCodecContext.flags before initing 
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   Note: note not everything is supported yet 
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*/
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#define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale 
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#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / Advanced prediction for H263
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#define CODEC_FLAG_QPEL   0x0010  ///< use qpel MC 
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#define CODEC_FLAG_GMC    0x0020  ///< use GMC 
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#define CODEC_FLAG_MV0    0x0040  ///< always try a MB with MV=<0,0> 
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#define CODEC_FLAG_PART   0x0080  ///< use data partitioning 
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/* parent program gurantees that the input for b-frame containing streams is not written to 
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   for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
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#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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#define CODEC_FLAG_PASS1 0x0200   ///< use internal 2pass ratecontrol in first  pass mode 
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#define CODEC_FLAG_PASS2 0x0400   ///< use internal 2pass ratecontrol in second pass mode 
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#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg) 
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#define CODEC_FLAG_GRAY  0x2000   ///< only decode/encode grayscale 
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#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges 
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#define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding 
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#define CODEC_FLAG_TRUNCATED  0x00010000 /** input bitstream might be truncated at a random location instead 
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                                            of only at frame boundaries */
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#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< normalize adaptive quantization 
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#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct 
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#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< force low delay
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#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< use alternate scan 
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#define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< use trellis quantization 
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#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< place global headers in extradata instead of every keyframe 
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#define CODEC_FLAG_BITEXACT       0x00800000 ///< use only bitexact stuff (except (i)dct) 
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/* Fx : Flag for h263+ extra options */
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#define CODEC_FLAG_H263P_AIC      0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
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#define CODEC_FLAG_AC_PRED        0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
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#define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector  
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#define CODEC_FLAG_CBP_RD         0x04000000 ///< use rate distortion optimization for cbp
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#define CODEC_FLAG_QP_RD          0x08000000 ///< use rate distortion optimization for qp selectioon
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#define CODEC_FLAG_H263P_AIV      0x00000008 ///< H263 Alternative inter vlc
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#define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
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#define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
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#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
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#define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
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#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
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#define CODEC_FLAG_CLOSED_GOP     0x80000000
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/* Unsupported options :
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 *                 Syntax Arithmetic coding (SAC)
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 *                 Reference Picture Selection
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 *                 Independant Segment Decoding */
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/* /Fx */
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/* codec capabilities */
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#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback 
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/**
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 * Codec uses get_buffer() for allocating buffers.
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 * direct rendering method 1
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 */
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#define CODEC_CAP_DR1             0x0002
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/* if 'parse_only' field is true, then avcodec_parse_frame() can be
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   used */
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#define CODEC_CAP_PARSE_ONLY      0x0004
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#define CODEC_CAP_TRUNCATED       0x0008
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/* codec can export data for HW decoding (XvMC) */
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#define CODEC_CAP_HWACCEL         0x0010
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//the following defines might change, so dont expect compatibility if u use them
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#define MB_TYPE_INTRA4x4   0x0001
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#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
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#define MB_TYPE_INTRA_PCM  0x0004 //FIXME h264 specific
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#define MB_TYPE_16x16      0x0008
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#define MB_TYPE_16x8       0x0010
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#define MB_TYPE_8x16       0x0020
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#define MB_TYPE_8x8        0x0040
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#define MB_TYPE_INTERLACED 0x0080
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#define MB_TYPE_DIRECT2     0x0100 //FIXME
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#define MB_TYPE_ACPRED     0x0200
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#define MB_TYPE_GMC        0x0400
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#define MB_TYPE_SKIP       0x0800
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#define MB_TYPE_P0L0       0x1000
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#define MB_TYPE_P1L0       0x2000
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#define MB_TYPE_P0L1       0x4000
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#define MB_TYPE_P1L1       0x8000
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#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
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#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
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#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
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#define MB_TYPE_QUANT      0x00010000
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#define MB_TYPE_CBP        0x00020000
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//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
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/**
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 * Pan Scan area.
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 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
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 */
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typedef struct AVPanScan{
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    /**
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     * id.
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     * - encoding: set by user.
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     * - decoding: set by lavc
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     */
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    int id;
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    /**
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     * width and height in 1/16 pel
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     * - encoding: set by user.
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     * - decoding: set by lavc
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     */
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    int width;
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    int height;
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    /**
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     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
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     * - encoding: set by user.
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     * - decoding: set by lavc
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     */
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    int16_t position[3][2];
347
}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\
360
     * this isnt used by lavc unless the default get/release_buffer() is used\
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     * - encoding: \
362
     * - decoding: \
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     */\
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    uint8_t *base[4];\
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    /**\
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     * 1 -> keyframe, 0-> not\
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     * - encoding: set by lavc\
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     * - decoding: set by lavc\
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     */\
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    int key_frame;\
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\
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    /**\
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     * picture type of the frame, see ?_TYPE below.\
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     * - encoding: set by lavc for coded_picture (and set by user for input)\
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     * - decoding: set by lavc\
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     */\
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    int pict_type;\
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\
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    /**\
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     * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
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     * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
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     * - encoding: MUST be set by user\
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     * - decoding: set by lavc\
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     */\
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    int64_t pts;\
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\
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    /**\
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     * picture number in bitstream order.\
389
     * - encoding: set by\
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     * - decoding: set by lavc\
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     */\
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    int coded_picture_number;\
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    /**\
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     * picture number in display order.\
395
     * - encoding: set by\
396
     * - decoding: set by lavc\
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     */\
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    int display_picture_number;\
399
\
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    /**\
401
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
402
     * - encoding: set by lavc for coded_picture (and set by user for input)\
403
     * - decoding: set by lavc\
404
     */\
405
    int quality; \
406
\
407
    /**\
408
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
409
     * set to INT_MAX if the buffer has not been used yet \
410
     * - encoding: unused\
411
     * - decoding: MUST be set by get_buffer()\
412
     */\
413
    int age;\
414
\
415
    /**\
416
     * is this picture used as reference\
417
     * - encoding: unused\
418
     * - decoding: set by lavc (before get_buffer() call))\
419
     */\
420
    int reference;\
421
\
422
    /**\
423
     * QP table\
424
     * - encoding: unused\
425
     * - decoding: set by lavc\
426
     */\
427
    int8_t *qscale_table;\
428
    /**\
429
     * QP store stride\
430
     * - encoding: unused\
431
     * - decoding: set by lavc\
432
     */\
433
    int qstride;\
434
\
435
    /**\
436
     * mbskip_table[mb]>=1 if MB didnt change\
437
     * stride= mb_width = (width+15)>>4\
438
     * - encoding: unused\
439
     * - decoding: set by lavc\
440
     */\
441
    uint8_t *mbskip_table;\
442
\
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    /**\
444
     * Motion vector table\
445
     * - encoding: set by user\
446
     * - decoding: set by lavc\
447
     */\
448
    int16_t (*motion_val[2])[2];\
449
\
450
    /**\
451
     * Macroblock type table\
452
     * mb_type_base + mb_width + 2\
453
     * - encoding: set by user\
454
     * - decoding: set by lavc\
455
     */\
456
    uint32_t *mb_type;\
457
\
458
    /**\
459
     * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
460
     * - encoding: unused\
461
     * - decoding: set by lavc\
462
     */\
463
    uint8_t motion_subsample_log2;\
464
\
465
    /**\
466
     * for some private data of the user\
467
     * - encoding: unused\
468
     * - decoding: set by user\
469
     */\
470
    void *opaque;\
471
\
472
    /**\
473
     * error\
474
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
475
     * - decoding: unused\
476
     */\
477
    uint64_t error[4];\
478
\
479
    /**\
480
     * type of the buffer (to keep track of who has to dealloc data[*])\
481
     * - encoding: set by the one who allocs it\
482
     * - decoding: set by the one who allocs it\
483
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
484
     */\
485
    int type;\
486
    \
487
    /**\
488
     * when decoding, this signal how much the picture must be delayed.\
489
     * extra_delay = repeat_pict / (2*fps)\
490
     * - encoding: unused\
491
     * - decoding: set by lavc\
492
     */\
493
    int repeat_pict;\
494
    \
495
    /**\
496
     * \
497
     */\
498
    int qscale_type;\
499
    \
500
    /**\
501
     * The content of the picture is interlaced.\
502
     * - encoding: set by user\
503
     * - decoding: set by lavc (default 0)\
504
     */\
505
    int interlaced_frame;\
506
    \
507
    /**\
508
     * if the content is interlaced, is top field displayed first.\
509
     * - encoding: set by user\
510
     * - decoding: set by lavc\
511
     */\
512
    int top_field_first;\
513
    \
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    /**\
515
     * Pan scan.\
516
     * - encoding: set by user\
517
     * - decoding: set by lavc\
518
     */\
519
    AVPanScan *pan_scan;\
520
    \
521
    /**\
522
     * tell user application that palette has changed from previous frame.\
523
     * - encoding: ??? (no palette-enabled encoder yet)\
524
     * - decoding: set by lavc (default 0)\
525
     */\
526
    int palette_has_changed;\
527
    \
528
    /**\
529
     * Codec suggestion on buffer type if != 0\
530
     * - encoding: unused\
531
     * - decoding: set by lavc (before get_buffer() call))\
532
     */\
533
    int buffer_hints;\
534
\
535
    /**\
536
     * DCT coeffitients\
537
     * - encoding: unused\
538
     * - decoding: set by lavc\
539
     */\
540
    short *dct_coeff;\
541
\
542
    /**\
543
     * Motion referece frame index\
544
     * - encoding: set by user\
545
     * - decoding: set by lavc\
546
     */\
547
    int8_t *ref_index[2];
548

    
549
#define FF_QSCALE_TYPE_MPEG1        0
550
#define FF_QSCALE_TYPE_MPEG2        1
551

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

    
557

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

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

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

    
577
#define DEFAULT_FRAME_RATE_BASE 1001000
578

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    
821
    char codec_name[32];
822
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
823
    enum CodecID codec_id; /* see CODEC_ID_xxx */
824
    
825
    /**
826
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
827
     * this is used to workaround some encoder bugs
828
     * - encoding: set by user, if not then the default based on codec_id will be used
829
     * - decoding: set by user, will be converted to upper case by lavc during init
830
     */
831
    unsigned int codec_tag;
832
    
833
    /**
834
     * workaround bugs in encoders which sometimes cannot be detected automatically.
835
     * - encoding: unused
836
     * - decoding: set by user
837
     */
838
    int workaround_bugs;
839
#define FF_BUG_AUTODETECT       1  ///< autodetection
840
#define FF_BUG_OLD_MSMPEG4      2
841
#define FF_BUG_XVID_ILACE       4
842
#define FF_BUG_UMP4             8
843
#define FF_BUG_NO_PADDING       16
844
#define FF_BUG_AMV              32
845
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
846
#define FF_BUG_QPEL_CHROMA      64
847
#define FF_BUG_STD_QPEL         128
848
#define FF_BUG_QPEL_CHROMA2     256
849
#define FF_BUG_DIRECT_BLOCKSIZE 512
850
#define FF_BUG_EDGE             1024
851
#define FF_BUG_HPEL_CHROMA      2048
852
#define FF_BUG_DC_CLIP          4096
853
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
854
        
855
    /**
856
     * luma single coeff elimination threshold.
857
     * - encoding: set by user
858
     * - decoding: unused
859
     */
860
    int luma_elim_threshold;
861
    
862
    /**
863
     * chroma single coeff elimination threshold.
864
     * - encoding: set by user
865
     * - decoding: unused
866
     */
867
    int chroma_elim_threshold;
868
    
869
    /**
870
     * strictly follow the std (MPEG4, ...).
871
     * - encoding: set by user
872
     * - decoding: unused
873
     */
874
    int strict_std_compliance;
875
    
876
    /**
877
     * qscale offset between ip and b frames.
878
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
879
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
880
     * - encoding: set by user.
881
     * - decoding: unused
882
     */
883
    float b_quant_offset;
884
    
885
    /**
886
     * error resilience higher values will detect more errors but may missdetect
887
     * some more or less valid parts as errors.
888
     * - encoding: unused
889
     * - decoding: set by user
890
     */
891
    int error_resilience;
892
#define FF_ER_CAREFULL        1
893
#define FF_ER_COMPLIANT       2
894
#define FF_ER_AGGRESSIVE      3
895
#define FF_ER_VERY_AGGRESSIVE 4
896
    
897
    /**
898
     * called at the beginning of each frame to get a buffer for it.
899
     * if pic.reference is set then the frame will be read later by lavc
900
     * avcodec_align_dimensions() should be used to find the required width and
901
     * height, as they normally need to be rounded up to the next multiple of 16
902
     * - encoding: unused
903
     * - decoding: set by lavc, user can override
904
     */
905
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
906
    
907
    /**
908
     * called to release buffers which where allocated with get_buffer.
909
     * a released buffer can be reused in get_buffer()
910
     * pic.data[*] must be set to NULL
911
     * - encoding: unused
912
     * - decoding: set by lavc, user can override
913
     */
914
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
915

    
916
    /**
917
     * is 1 if the decoded stream contains b frames, 0 otherwise.
918
     * - encoding: unused
919
     * - decoding: set by lavc
920
     */
921
    int has_b_frames;
922
    
923
    int block_align; ///< used by some WAV based audio codecs
924
    
925
    int parse_only; /* - decoding only: if true, only parsing is done
926
                       (function avcodec_parse_frame()). The frame
927
                       data is returned. Only MPEG codecs support this now. */
928
    
929
    /**
930
     * 0-> h263 quant 1-> mpeg quant.
931
     * - encoding: set by user.
932
     * - decoding: unused
933
     */
934
    int mpeg_quant;
935
    
936
    /**
937
     * pass1 encoding statistics output buffer.
938
     * - encoding: set by lavc
939
     * - decoding: unused
940
     */
941
    char *stats_out;
942
    
943
    /**
944
     * pass2 encoding statistics input buffer.
945
     * concatenated stuff from stats_out of pass1 should be placed here
946
     * - encoding: allocated/set/freed by user
947
     * - decoding: unused
948
     */
949
    char *stats_in;
950
    
951
    /**
952
     * ratecontrol qmin qmax limiting method.
953
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
954
     * - encoding: set by user.
955
     * - decoding: unused
956
     */
957
    float rc_qsquish;
958

    
959
    float rc_qmod_amp;
960
    int rc_qmod_freq;
961
    
962
    /**
963
     * ratecontrol override, see RcOverride.
964
     * - encoding: allocated/set/freed by user.
965
     * - decoding: unused
966
     */
967
    RcOverride *rc_override;
968
    int rc_override_count;
969
    
970
    /**
971
     * rate control equation.
972
     * - encoding: set by user
973
     * - decoding: unused
974
     */
975
    char *rc_eq;
976
    
977
    /**
978
     * maximum bitrate.
979
     * - encoding: set by user.
980
     * - decoding: unused
981
     */
982
    int rc_max_rate;
983
    
984
    /**
985
     * minimum bitrate.
986
     * - encoding: set by user.
987
     * - decoding: unused
988
     */
989
    int rc_min_rate;
990
    
991
    /**
992
     * decoder bitstream buffer size.
993
     * - encoding: set by user.
994
     * - decoding: unused
995
     */
996
    int rc_buffer_size;
997
    float rc_buffer_aggressivity;
998

    
999
    /**
1000
     * qscale factor between p and i frames.
1001
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1002
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1003
     * - encoding: set by user.
1004
     * - decoding: unused
1005
     */
1006
    float i_quant_factor;
1007
    
1008
    /**
1009
     * qscale offset between p and i frames.
1010
     * - encoding: set by user.
1011
     * - decoding: unused
1012
     */
1013
    float i_quant_offset;
1014
    
1015
    /**
1016
     * initial complexity for pass1 ratecontrol.
1017
     * - encoding: set by user.
1018
     * - decoding: unused
1019
     */
1020
    float rc_initial_cplx;
1021

    
1022
    /**
1023
     * dct algorithm, see FF_DCT_* below.
1024
     * - encoding: set by user
1025
     * - decoding: unused
1026
     */
1027
    int dct_algo;
1028
#define FF_DCT_AUTO    0
1029
#define FF_DCT_FASTINT 1
1030
#define FF_DCT_INT     2
1031
#define FF_DCT_MMX     3
1032
#define FF_DCT_MLIB    4
1033
#define FF_DCT_ALTIVEC 5
1034
#define FF_DCT_FAAN    6
1035
    
1036
    /**
1037
     * luminance masking (0-> disabled).
1038
     * - encoding: set by user
1039
     * - decoding: unused
1040
     */
1041
    float lumi_masking;
1042
    
1043
    /**
1044
     * temporary complexity masking (0-> disabled).
1045
     * - encoding: set by user
1046
     * - decoding: unused
1047
     */
1048
    float temporal_cplx_masking;
1049
    
1050
    /**
1051
     * spatial complexity masking (0-> disabled).
1052
     * - encoding: set by user
1053
     * - decoding: unused
1054
     */
1055
    float spatial_cplx_masking;
1056
    
1057
    /**
1058
     * p block masking (0-> disabled).
1059
     * - encoding: set by user
1060
     * - decoding: unused
1061
     */
1062
    float p_masking;
1063

    
1064
    /**
1065
     * darkness masking (0-> disabled).
1066
     * - encoding: set by user
1067
     * - decoding: unused
1068
     */
1069
    float dark_masking;
1070
    
1071
    
1072
    /* for binary compatibility */
1073
    int unused;
1074
    
1075
    /**
1076
     * idct algorithm, see FF_IDCT_* below.
1077
     * - encoding: set by user
1078
     * - decoding: set by user
1079
     */
1080
    int idct_algo;
1081
#define FF_IDCT_AUTO         0
1082
#define FF_IDCT_INT          1
1083
#define FF_IDCT_SIMPLE       2
1084
#define FF_IDCT_SIMPLEMMX    3
1085
#define FF_IDCT_LIBMPEG2MMX  4
1086
#define FF_IDCT_PS2          5
1087
#define FF_IDCT_MLIB         6
1088
#define FF_IDCT_ARM          7
1089
#define FF_IDCT_ALTIVEC      8
1090
#define FF_IDCT_SH4          9
1091
#define FF_IDCT_SIMPLEARM    10
1092

    
1093
    /**
1094
     * slice count.
1095
     * - encoding: set by lavc
1096
     * - decoding: set by user (or 0)
1097
     */
1098
    int slice_count;
1099
    /**
1100
     * slice offsets in the frame in bytes.
1101
     * - encoding: set/allocated by lavc
1102
     * - decoding: set/allocated by user (or NULL)
1103
     */
1104
    int *slice_offset;
1105

    
1106
    /**
1107
     * error concealment flags.
1108
     * - encoding: unused
1109
     * - decoding: set by user
1110
     */
1111
    int error_concealment;
1112
#define FF_EC_GUESS_MVS   1
1113
#define FF_EC_DEBLOCK     2
1114

    
1115
    /**
1116
     * dsp_mask could be add used to disable unwanted CPU features
1117
     * CPU features (i.e. MMX, SSE. ...)
1118
     *
1119
     * with FORCE flag you may instead enable given CPU features
1120
     * (Dangerous: usable in case of misdetection, improper usage however will
1121
     * result into program crash)
1122
     */
1123
    unsigned dsp_mask;
1124
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1125
    /* lower 16 bits - CPU features */
1126
#ifdef HAVE_MMX
1127
#define FF_MM_MMX        0x0001 /* standard MMX */
1128
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1129
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1130
#define FF_MM_SSE        0x0008 /* SSE functions */
1131
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1132
#endif /* HAVE_MMX */
1133

    
1134
    /**
1135
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1136
     * - encoding: set by lavc
1137
     * - decoding: set by user
1138
     */
1139
     int bits_per_sample;
1140
    
1141
    /**
1142
     * prediction method (needed for huffyuv).
1143
     * - encoding: set by user
1144
     * - decoding: unused
1145
     */
1146
     int prediction_method;
1147
#define FF_PRED_LEFT   0
1148
#define FF_PRED_PLANE  1
1149
#define FF_PRED_MEDIAN 2
1150
    
1151
    /**
1152
     * sample aspect ratio (0 if unknown).
1153
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1154
     * - encoding: set by user.
1155
     * - decoding: set by lavc.
1156
     */
1157
    AVRational sample_aspect_ratio;
1158

    
1159
    /**
1160
     * the picture in the bitstream.
1161
     * - encoding: set by lavc
1162
     * - decoding: set by lavc
1163
     */
1164
    AVFrame *coded_frame;
1165

    
1166
    /**
1167
     * debug.
1168
     * - encoding: set by user.
1169
     * - decoding: set by user.
1170
     */
1171
    int debug;
1172
#define FF_DEBUG_PICT_INFO 1
1173
#define FF_DEBUG_RC        2
1174
#define FF_DEBUG_BITSTREAM 4
1175
#define FF_DEBUG_MB_TYPE   8
1176
#define FF_DEBUG_QP        16
1177
#define FF_DEBUG_MV        32
1178
#define FF_DEBUG_DCT_COEFF 0x00000040
1179
#define FF_DEBUG_SKIP      0x00000080
1180
#define FF_DEBUG_STARTCODE 0x00000100
1181
#define FF_DEBUG_PTS       0x00000200
1182
#define FF_DEBUG_ER        0x00000400
1183
#define FF_DEBUG_MMCO      0x00000800
1184
#define FF_DEBUG_BUGS      0x00001000
1185
#define FF_DEBUG_VIS_QP    0x00002000
1186
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1187
    
1188
    /**
1189
     * debug.
1190
     * - encoding: set by user.
1191
     * - decoding: set by user.
1192
     */
1193
    int debug_mv;
1194
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1195
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1196
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1197

    
1198
    /**
1199
     * error.
1200
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1201
     * - decoding: unused
1202
     */
1203
    uint64_t error[4];
1204
    
1205
    /**
1206
     * minimum MB quantizer.
1207
     * - encoding: set by user.
1208
     * - decoding: unused
1209
     */
1210
    int mb_qmin;
1211

    
1212
    /**
1213
     * maximum MB quantizer.
1214
     * - encoding: set by user.
1215
     * - decoding: unused
1216
     */
1217
    int mb_qmax;
1218
    
1219
    /**
1220
     * motion estimation compare function.
1221
     * - encoding: set by user.
1222
     * - decoding: unused
1223
     */
1224
    int me_cmp;
1225
    /**
1226
     * subpixel motion estimation compare function.
1227
     * - encoding: set by user.
1228
     * - decoding: unused
1229
     */
1230
    int me_sub_cmp;
1231
    /**
1232
     * macroblock compare function (not supported yet).
1233
     * - encoding: set by user.
1234
     * - decoding: unused
1235
     */
1236
    int mb_cmp;
1237
    /**
1238
     * interlaced dct compare function
1239
     * - encoding: set by user.
1240
     * - decoding: unused
1241
     */
1242
    int ildct_cmp;
1243
#define FF_CMP_SAD  0
1244
#define FF_CMP_SSE  1
1245
#define FF_CMP_SATD 2
1246
#define FF_CMP_DCT  3
1247
#define FF_CMP_PSNR 4
1248
#define FF_CMP_BIT  5
1249
#define FF_CMP_RD   6
1250
#define FF_CMP_ZERO 7
1251
#define FF_CMP_VSAD 8
1252
#define FF_CMP_VSSE 9
1253
#define FF_CMP_CHROMA 256
1254
    
1255
    /**
1256
     * ME diamond size & shape.
1257
     * - encoding: set by user.
1258
     * - decoding: unused
1259
     */
1260
    int dia_size;
1261

    
1262
    /**
1263
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1264
     * - encoding: set by user.
1265
     * - decoding: unused
1266
     */
1267
    int last_predictor_count;
1268

    
1269
    /**
1270
     * pre pass for motion estimation.
1271
     * - encoding: set by user.
1272
     * - decoding: unused
1273
     */
1274
    int pre_me;
1275

    
1276
    /**
1277
     * motion estimation pre pass compare function.
1278
     * - encoding: set by user.
1279
     * - decoding: unused
1280
     */
1281
    int me_pre_cmp;
1282

    
1283
    /**
1284
     * ME pre pass diamond size & shape.
1285
     * - encoding: set by user.
1286
     * - decoding: unused
1287
     */
1288
    int pre_dia_size;
1289

    
1290
    /**
1291
     * subpel ME quality.
1292
     * - encoding: set by user.
1293
     * - decoding: unused
1294
     */
1295
    int me_subpel_quality;
1296

    
1297
    /**
1298
     * callback to negotiate the pixelFormat.
1299
     * @param fmt is the list of formats which are supported by the codec,
1300
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1301
     * the first is allways the native one
1302
     * @return the choosen format
1303
     * - encoding: unused
1304
     * - decoding: set by user, if not set then the native format will always be choosen
1305
     */
1306
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1307

    
1308
    /**
1309
     * DTG active format information (additionnal aspect ratio
1310
     * information only used in DVB MPEG2 transport streams). 0 if
1311
     * not set.
1312
     * 
1313
     * - encoding: unused.
1314
     * - decoding: set by decoder 
1315
     */
1316
    int dtg_active_format;
1317
#define FF_DTG_AFD_SAME         8
1318
#define FF_DTG_AFD_4_3          9
1319
#define FF_DTG_AFD_16_9         10
1320
#define FF_DTG_AFD_14_9         11
1321
#define FF_DTG_AFD_4_3_SP_14_9  13
1322
#define FF_DTG_AFD_16_9_SP_14_9 14
1323
#define FF_DTG_AFD_SP_4_3       15
1324

    
1325
    /**
1326
     * Maximum motion estimation search range in subpel units.
1327
     * if 0 then no limit
1328
     * 
1329
     * - encoding: set by user.
1330
     * - decoding: unused.
1331
     */
1332
    int me_range;
1333

    
1334
    /**
1335
     * frame_rate_base.
1336
     * for variable fps this is 1
1337
     * - encoding: set by user.
1338
     * - decoding: set by lavc.
1339
     * @todo move this after frame_rate
1340
     */
1341

    
1342
    int frame_rate_base;
1343
    /**
1344
     * intra quantizer bias.
1345
     * - encoding: set by user.
1346
     * - decoding: unused
1347
     */
1348
    int intra_quant_bias;
1349
#define FF_DEFAULT_QUANT_BIAS 999999
1350
    
1351
    /**
1352
     * inter quantizer bias.
1353
     * - encoding: set by user.
1354
     * - decoding: unused
1355
     */
1356
    int inter_quant_bias;
1357

    
1358
    /**
1359
     * color table ID.
1360
     * - encoding: unused.
1361
     * - decoding: which clrtable should be used for 8bit RGB images
1362
     *             table have to be stored somewhere FIXME
1363
     */
1364
    int color_table_id;
1365
    
1366
    /**
1367
     * internal_buffer count. 
1368
     * Dont touch, used by lavc default_get_buffer()
1369
     */
1370
    int internal_buffer_count;
1371
    
1372
    /**
1373
     * internal_buffers. 
1374
     * Dont touch, used by lavc default_get_buffer()
1375
     */
1376
    void *internal_buffer;
1377

    
1378
#define FF_LAMBDA_SHIFT 7
1379
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1380
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1381
#define FF_LAMBDA_MAX (256*128-1)
1382

    
1383
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1384
    /**
1385
     * global quality for codecs which cannot change it per frame.
1386
     * this should be proportional to MPEG1/2/4 qscale.
1387
     * - encoding: set by user.
1388
     * - decoding: unused
1389
     */
1390
    int global_quality;
1391
    
1392
#define FF_CODER_TYPE_VLC   0
1393
#define FF_CODER_TYPE_AC    1
1394
    /**
1395
     * coder type
1396
     * - encoding: set by user.
1397
     * - decoding: unused
1398
     */
1399
    int coder_type;
1400

    
1401
    /**
1402
     * context model
1403
     * - encoding: set by user.
1404
     * - decoding: unused
1405
     */
1406
    int context_model;
1407
    
1408
    /**
1409
     * slice flags
1410
     * - encoding: unused
1411
     * - decoding: set by user.
1412
     */
1413
    int slice_flags;
1414
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1415
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1416
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1417

    
1418
    /**
1419
     * XVideo Motion Acceleration
1420
     * - encoding: forbidden
1421
     * - decoding: set by decoder
1422
     */
1423
    int xvmc_acceleration;
1424
    
1425
    /**
1426
     * macroblock decision mode
1427
     * - encoding: set by user.
1428
     * - decoding: unused
1429
     */
1430
    int mb_decision;
1431
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1432
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1433
#define FF_MB_DECISION_RD     2        ///< rate distoration
1434

    
1435
    /**
1436
     * custom intra quantization matrix
1437
     * - encoding: set by user, can be NULL
1438
     * - decoding: set by lavc
1439
     */
1440
    uint16_t *intra_matrix;
1441

    
1442
    /**
1443
     * custom inter quantization matrix
1444
     * - encoding: set by user, can be NULL
1445
     * - decoding: set by lavc
1446
     */
1447
    uint16_t *inter_matrix;
1448
    
1449
    /**
1450
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1451
     * this is used to workaround some encoder bugs
1452
     * - encoding: unused
1453
     * - decoding: set by user, will be converted to upper case by lavc during init
1454
     */
1455
    unsigned int stream_codec_tag;
1456

    
1457
    /**
1458
     * scene change detection threshold.
1459
     * 0 is default, larger means fewer detected scene changes
1460
     * - encoding: set by user.
1461
     * - decoding: unused
1462
     */
1463
    int scenechange_threshold;
1464

    
1465
    /**
1466
     * minimum lagrange multipler
1467
     * - encoding: set by user.
1468
     * - decoding: unused
1469
     */
1470
    int lmin;
1471

    
1472
    /**
1473
     * maximum lagrange multipler
1474
     * - encoding: set by user.
1475
     * - decoding: unused
1476
     */
1477
    int lmax;
1478

    
1479
    /**
1480
     * Palette control structure
1481
     * - encoding: ??? (no palette-enabled encoder yet)
1482
     * - decoding: set by user.
1483
     */
1484
    struct AVPaletteControl *palctrl;
1485

    
1486
    /**
1487
     * noise reduction strength
1488
     * - encoding: set by user.
1489
     * - decoding: unused
1490
     */
1491
    int noise_reduction;
1492
    
1493
    /**
1494
     * called at the beginning of a frame to get cr buffer for it.
1495
     * buffer type (size, hints) must be the same. lavc won't check it.
1496
     * lavc will pass previous buffer in pic, function should return
1497
     * same buffer or new buffer with old frame "painted" into it.
1498
     * if pic.data[0] == NULL must behave like get_buffer().
1499
     * - encoding: unused
1500
     * - decoding: set by lavc, user can override
1501
     */
1502
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1503

    
1504
    /**
1505
     * number of bits which should be loaded into the rc buffer before decoding starts
1506
     * - encoding: set by user.
1507
     * - decoding: unused
1508
     */
1509
    int rc_initial_buffer_occupancy;
1510

    
1511
    /**
1512
     *
1513
     * - encoding: set by user.
1514
     * - decoding: unused
1515
     */
1516
    int inter_threshold;
1517

    
1518
    /**
1519
     * CODEC_FLAG2_*.
1520
     * - encoding: set by user.
1521
     * - decoding: set by user.
1522
     */
1523
    int flags2;
1524

    
1525
    /**
1526
     * simulates errors in the bitstream to test error concealment.
1527
     * - encoding: set by user.
1528
     * - decoding: unused.
1529
     */
1530
    int error_rate;
1531
    
1532
    /**
1533
     * MP3 antialias algorithm, see FF_AA_* below.
1534
     * - encoding: unused
1535
     * - decoding: set by user
1536
     */
1537
    int antialias_algo;
1538
#define FF_AA_AUTO    0
1539
#define FF_AA_FASTINT 1 //not implemented yet
1540
#define FF_AA_INT     2
1541
#define FF_AA_FLOAT   3
1542
    /**
1543
     * Quantizer noise shaping.
1544
     * - encoding: set by user
1545
     * - decoding: unused
1546
     */
1547
    int quantizer_noise_shaping;
1548

    
1549
    /**
1550
     * Thread count.
1551
     * is used to decide how many independant tasks should be passed to execute()
1552
     * - encoding: set by user
1553
     * - decoding: set by user
1554
     */
1555
    int thread_count;
1556
    
1557
    /**
1558
     * the codec may call this to execute several independant things. it will return only after
1559
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1560
     * default implementation will execute the parts serially
1561
     * @param count the number of things to execute
1562
     * - encoding: set by lavc, user can override
1563
     * - decoding: set by lavc, user can override
1564
     */
1565
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1566
    
1567
    /**
1568
     * Thread opaque.
1569
     * can be used by execute() to store some per AVCodecContext stuff.
1570
     * - encoding: set by execute()
1571
     * - decoding: set by execute()
1572
     */
1573
    void *thread_opaque;
1574

    
1575
    /**
1576
     * Motion estimation threshold. under which no motion estimation is 
1577
     * performed, but instead the user specified motion vectors are used
1578
     * 
1579
     * - encoding: set by user
1580
     * - decoding: unused
1581
     */
1582
     int me_threshold;
1583

    
1584
    /**
1585
     * Macroblock threshold. under which the user specified macroblock types will be used
1586
     * - encoding: set by user
1587
     * - decoding: unused
1588
     */
1589
     int mb_threshold;
1590

    
1591
    /**
1592
     * 
1593
     * - encoding: set by user
1594
     * - decoding: unused
1595
     */
1596
     int intra_dc_precision;
1597
} AVCodecContext;
1598

    
1599

    
1600
/**
1601
 * AVOption.
1602
 */
1603
typedef struct AVOption {
1604
    /** options' name */
1605
    const char *name; /* if name is NULL, it indicates a link to next */
1606
    /** short English text help or const struct AVOption* subpointer */
1607
    const char *help; //        const struct AVOption* sub;
1608
    /** offset to context structure where the parsed value should be stored */
1609
    int offset;
1610
    /** options' type */
1611
    int type;
1612
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1613
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1614
#define FF_OPT_TYPE_INT 3       ///< integer
1615
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1616
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1617
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1618
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1619
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1620
    /** min value  (min == max   ->  no limits) */
1621
    double min;
1622
    /** maximum value for double/int */
1623
    double max;
1624
    /** default boo [0,1]l/double/int value */
1625
    double defval;
1626
    /**
1627
     * default string value (with optional semicolon delimited extra option-list
1628
     * i.e.   option1;option2;option3
1629
     * defval might select other then first argument as default
1630
     */
1631
    const char *defstr;
1632
#define FF_OPT_MAX_DEPTH 10
1633
} AVOption;
1634

    
1635
/**
1636
 * Parse option(s) and sets fields in passed structure
1637
 * @param strct        structure where the parsed results will be written
1638
 * @param list  list with AVOptions
1639
 * @param opts        string with options for parsing
1640
 */
1641
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1642

    
1643

    
1644
/**
1645
 * AVCodec.
1646
 */
1647
typedef struct AVCodec {
1648
    const char *name;
1649
    enum CodecType type;
1650
    int id;
1651
    int priv_data_size;
1652
    int (*init)(AVCodecContext *);
1653
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1654
    int (*close)(AVCodecContext *);
1655
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1656
                  uint8_t *buf, int buf_size);
1657
    int capabilities;
1658
    const AVOption *options;
1659
    struct AVCodec *next;
1660
    void (*flush)(AVCodecContext *);
1661
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1662
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1663
} AVCodec;
1664

    
1665
/**
1666
 * four components are given, that's all.
1667
 * the last component is alpha
1668
 */
1669
typedef struct AVPicture {
1670
    uint8_t *data[4];
1671
    int linesize[4];       ///< number of bytes per line
1672
} AVPicture;
1673

    
1674
/**
1675
 * AVPaletteControl
1676
 * This structure defines a method for communicating palette changes
1677
 * between and demuxer and a decoder.
1678
 */
1679
#define AVPALETTE_SIZE 1024
1680
#define AVPALETTE_COUNT 256
1681
typedef struct AVPaletteControl {
1682

    
1683
    /* demuxer sets this to 1 to indicate the palette has changed;
1684
     * decoder resets to 0 */
1685
    int palette_changed;
1686

    
1687
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1688
     * the individual palette components should be on a 8-bit scale; if
1689
     * the palette data comes from a IBM VGA native format, the component
1690
     * data is probably 6 bits in size and needs to be scaled */
1691
    unsigned int palette[AVPALETTE_COUNT];
1692

    
1693
} AVPaletteControl;
1694

    
1695
extern AVCodec ac3_encoder;
1696
extern AVCodec mp2_encoder;
1697
extern AVCodec mp3lame_encoder;
1698
extern AVCodec oggvorbis_encoder;
1699
extern AVCodec faac_encoder;
1700
extern AVCodec mpeg1video_encoder;
1701
extern AVCodec mpeg2video_encoder;
1702
extern AVCodec h263_encoder;
1703
extern AVCodec h263p_encoder;
1704
extern AVCodec flv_encoder;
1705
extern AVCodec rv10_encoder;
1706
extern AVCodec rv20_encoder;
1707
extern AVCodec dvvideo_encoder;
1708
extern AVCodec mjpeg_encoder;
1709
extern AVCodec ljpeg_encoder;
1710
extern AVCodec mpeg4_encoder;
1711
extern AVCodec msmpeg4v1_encoder;
1712
extern AVCodec msmpeg4v2_encoder;
1713
extern AVCodec msmpeg4v3_encoder;
1714
extern AVCodec wmv1_encoder;
1715
extern AVCodec wmv2_encoder;
1716
extern AVCodec huffyuv_encoder;
1717
extern AVCodec h264_encoder;
1718
extern AVCodec asv1_encoder;
1719
extern AVCodec asv2_encoder;
1720
extern AVCodec vcr1_encoder;
1721
extern AVCodec ffv1_encoder;
1722
extern AVCodec mdec_encoder;
1723
extern AVCodec zlib_encoder;
1724
extern AVCodec svq1_encoder;
1725

    
1726
extern AVCodec h263_decoder;
1727
extern AVCodec mpeg4_decoder;
1728
extern AVCodec msmpeg4v1_decoder;
1729
extern AVCodec msmpeg4v2_decoder;
1730
extern AVCodec msmpeg4v3_decoder;
1731
extern AVCodec wmv1_decoder;
1732
extern AVCodec wmv2_decoder;
1733
extern AVCodec mpeg1video_decoder;
1734
extern AVCodec mpeg2video_decoder;
1735
extern AVCodec mpegvideo_decoder;
1736
extern AVCodec mpeg_xvmc_decoder;
1737
extern AVCodec h263i_decoder;
1738
extern AVCodec flv_decoder;
1739
extern AVCodec rv10_decoder;
1740
extern AVCodec rv20_decoder;
1741
extern AVCodec svq1_decoder;
1742
extern AVCodec svq3_decoder;
1743
extern AVCodec dvvideo_decoder;
1744
extern AVCodec wmav1_decoder;
1745
extern AVCodec wmav2_decoder;
1746
extern AVCodec mjpeg_decoder;
1747
extern AVCodec mjpegb_decoder;
1748
extern AVCodec sp5x_decoder;
1749
extern AVCodec mp2_decoder;
1750
extern AVCodec mp3_decoder;
1751
extern AVCodec mace3_decoder;
1752
extern AVCodec mace6_decoder;
1753
extern AVCodec huffyuv_decoder;
1754
extern AVCodec oggvorbis_decoder;
1755
extern AVCodec cyuv_decoder;
1756
extern AVCodec h264_decoder;
1757
extern AVCodec indeo3_decoder;
1758
extern AVCodec vp3_decoder;
1759
extern AVCodec theora_decoder;
1760
extern AVCodec amr_nb_decoder;
1761
extern AVCodec amr_nb_encoder;
1762
extern AVCodec amr_wb_encoder;
1763
extern AVCodec amr_wb_decoder;
1764
extern AVCodec aac_decoder;
1765
extern AVCodec mpeg4aac_decoder;
1766
extern AVCodec asv1_decoder;
1767
extern AVCodec asv2_decoder;
1768
extern AVCodec vcr1_decoder;
1769
extern AVCodec cljr_decoder;
1770
extern AVCodec ffv1_decoder;
1771
extern AVCodec fourxm_decoder;
1772
extern AVCodec mdec_decoder;
1773
extern AVCodec roq_decoder;
1774
extern AVCodec interplay_video_decoder;
1775
extern AVCodec xan_wc3_decoder;
1776
extern AVCodec rpza_decoder;
1777
extern AVCodec cinepak_decoder;
1778
extern AVCodec msrle_decoder;
1779
extern AVCodec msvideo1_decoder;
1780
extern AVCodec vqa_decoder;
1781
extern AVCodec idcin_decoder;
1782
extern AVCodec eightbps_decoder;
1783
extern AVCodec smc_decoder;
1784
extern AVCodec flic_decoder;
1785
extern AVCodec vmdvideo_decoder;
1786
extern AVCodec vmdaudio_decoder;
1787
extern AVCodec truemotion1_decoder;
1788
extern AVCodec mszh_decoder;
1789
extern AVCodec zlib_decoder;
1790
extern AVCodec ra_144_decoder;
1791
extern AVCodec ra_288_decoder;
1792
extern AVCodec roq_dpcm_decoder;
1793
extern AVCodec interplay_dpcm_decoder;
1794
extern AVCodec xan_dpcm_decoder;
1795
extern AVCodec qtrle_decoder;
1796
extern AVCodec flac_decoder;
1797

    
1798
/* pcm codecs */
1799
#define PCM_CODEC(id, name) \
1800
extern AVCodec name ## _decoder; \
1801
extern AVCodec name ## _encoder
1802

    
1803
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1804
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1805
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1806
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1807
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1808
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1809
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1810
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1811

    
1812
/* adpcm codecs */
1813

    
1814
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1815
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1816
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1817
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1818
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1819
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1820
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1821
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1822
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1823
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1824
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1825
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1826

    
1827
#undef PCM_CODEC
1828

    
1829
/* dummy raw video codec */
1830
extern AVCodec rawvideo_encoder;
1831
extern AVCodec rawvideo_decoder;
1832

    
1833
/* the following codecs use external GPL libs */
1834
extern AVCodec ac3_decoder;
1835

    
1836
/* resample.c */
1837

    
1838
struct ReSampleContext;
1839

    
1840
typedef struct ReSampleContext ReSampleContext;
1841

    
1842
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1843
                                     int output_rate, int input_rate);
1844
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1845
void audio_resample_close(ReSampleContext *s);
1846

    
1847
/* YUV420 format is assumed ! */
1848

    
1849
struct ImgReSampleContext;
1850

    
1851
typedef struct ImgReSampleContext ImgReSampleContext;
1852

    
1853
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1854
                                      int input_width, int input_height);
1855

    
1856
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1857
                                      int iwidth, int iheight,
1858
                                      int topBand, int bottomBand,
1859
                                      int leftBand, int rightBand,
1860
                                      int padtop, int padbottom,
1861
                                      int padleft, int padright);
1862

    
1863

    
1864
void img_resample(ImgReSampleContext *s, 
1865
                  AVPicture *output, const AVPicture *input);
1866

    
1867
void img_resample_close(ImgReSampleContext *s);
1868

    
1869
/**
1870
 * Allocate memory for a picture.  Call avpicture_free to free it.
1871
 *
1872
 * @param picture the picture to be filled in.
1873
 * @param pix_fmt the format of the picture.
1874
 * @param width the width of the picture.
1875
 * @param height the height of the picture.
1876
 * @return 0 if successful, -1 if not.
1877
 */
1878
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1879

    
1880
/* Free a picture previously allocated by avpicture_alloc. */
1881
void avpicture_free(AVPicture *picture);
1882

    
1883
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1884
                   int pix_fmt, int width, int height);
1885
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1886
                     unsigned char *dest, int dest_size);
1887
int avpicture_get_size(int pix_fmt, int width, int height);
1888
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1889
const char *avcodec_get_pix_fmt_name(int pix_fmt);
1890
enum PixelFormat avcodec_get_pix_fmt(const char* name);
1891

    
1892
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
1893
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
1894
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
1895
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
1896
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
1897
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1898

    
1899
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1900
                             int has_alpha);
1901
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1902
                              int has_alpha, int *loss_ptr);
1903

    
1904
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
1905
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
1906
int img_get_alpha_info(const AVPicture *src,
1907
                       int pix_fmt, int width, int height);
1908

    
1909
/* convert among pixel formats */
1910
int img_convert(AVPicture *dst, int dst_pix_fmt,
1911
                const AVPicture *src, int pix_fmt, 
1912
                int width, int height);
1913

    
1914
/* deinterlace a picture */
1915
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1916
                          int pix_fmt, int width, int height);
1917

    
1918
/* external high level API */
1919

    
1920
extern AVCodec *first_avcodec;
1921

    
1922
/* returns LIBAVCODEC_VERSION_INT constant */
1923
unsigned avcodec_version(void);
1924
/* returns LIBAVCODEC_BUILD constant */
1925
unsigned avcodec_build(void);
1926
void avcodec_init(void);
1927

    
1928
void register_avcodec(AVCodec *format);
1929
AVCodec *avcodec_find_encoder(enum CodecID id);
1930
AVCodec *avcodec_find_encoder_by_name(const char *name);
1931
AVCodec *avcodec_find_decoder(enum CodecID id);
1932
AVCodec *avcodec_find_decoder_by_name(const char *name);
1933
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1934

    
1935
void avcodec_get_context_defaults(AVCodecContext *s);
1936
AVCodecContext *avcodec_alloc_context(void);
1937
void avcodec_get_frame_defaults(AVFrame *pic);
1938
AVFrame *avcodec_alloc_frame(void);
1939

    
1940
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1941
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1942

    
1943
int avcodec_thread_init(AVCodecContext *s, int thread_count);
1944
void avcodec_thread_free(AVCodecContext *s);
1945
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
1946
//FIXME func typedef
1947

    
1948
/**
1949
 * opens / inits the AVCodecContext.
1950
 * not thread save!
1951
 */
1952
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1953

    
1954
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
1955
                         int *frame_size_ptr,
1956
                         uint8_t *buf, int buf_size);
1957
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
1958
                         int *got_picture_ptr,
1959
                         uint8_t *buf, int buf_size);
1960
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
1961
                        int *data_size_ptr,
1962
                        uint8_t *buf, int buf_size);
1963
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1964
                         const short *samples);
1965
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1966
                         const AVFrame *pict);
1967

    
1968
int avcodec_close(AVCodecContext *avctx);
1969

    
1970
void avcodec_register_all(void);
1971

    
1972
void avcodec_flush_buffers(AVCodecContext *avctx);
1973

    
1974
/* misc usefull functions */
1975

    
1976
/**
1977
 * returns a single letter to describe the picture type
1978
 */
1979
char av_get_pict_type_char(int pict_type);
1980

    
1981
/**
1982
 * reduce a fraction.
1983
 * this is usefull for framerate calculations
1984
 * @param max the maximum allowed for dst_nom & dst_den
1985
 * @return 1 if exact, 0 otherwise
1986
 */
1987
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1988

    
1989
/**
1990
 * rescale a 64bit integer.
1991
 * a simple a*b/c isnt possible as it can overflow
1992
 */
1993
int64_t av_rescale(int64_t a, int64_t b, int64_t c);
1994

    
1995

    
1996
/**
1997
 * Interface for 0.5.0 version
1998
 *
1999
 * do not even think about it's usage for this moment
2000
 */
2001

    
2002
typedef struct {
2003
    /// compressed size used from given memory buffer
2004
    int size;
2005
    /// I/P/B frame type
2006
    int frame_type;
2007
} avc_enc_result_t;
2008

    
2009
/**
2010
 * Commands
2011
 * order can't be changed - once it was defined
2012
 */
2013
typedef enum {
2014
    // general commands
2015
    AVC_OPEN_BY_NAME = 0xACA000,
2016
    AVC_OPEN_BY_CODEC_ID,
2017
    AVC_OPEN_BY_FOURCC,
2018
    AVC_CLOSE,
2019

    
2020
    AVC_FLUSH,
2021
    // pin - struct { uint8_t* src, uint_t src_size }
2022
    // pout - struct { AVPicture* img, consumed_bytes,
2023
    AVC_DECODE,
2024
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
2025
    // pout - uint_t used_from_dest_size
2026
    AVC_ENCODE, 
2027

    
2028
    // query/get video commands
2029
    AVC_GET_VERSION = 0xACB000,
2030
    AVC_GET_WIDTH,
2031
    AVC_GET_HEIGHT,
2032
    AVC_GET_DELAY,
2033
    AVC_GET_QUANT_TABLE,
2034
    // ...
2035

    
2036
    // query/get audio commands
2037
    AVC_GET_FRAME_SIZE = 0xABC000,
2038

    
2039
    // maybe define some simple structure which
2040
    // might be passed to the user - but they can't
2041
    // contain any codec specific parts and these
2042
    // calls are usualy necessary only few times
2043

    
2044
    // set video commands
2045
    AVC_SET_WIDTH = 0xACD000,
2046
    AVC_SET_HEIGHT,
2047

    
2048
    // set video encoding commands
2049
    AVC_SET_FRAME_RATE = 0xACD800,
2050
    AVC_SET_QUALITY,
2051
    AVC_SET_HURRY_UP,
2052

    
2053
    // set audio commands
2054
    AVC_SET_SAMPLE_RATE = 0xACE000,
2055
    AVC_SET_CHANNELS,
2056

    
2057
} avc_cmd_t;
2058

    
2059
/**
2060
 * \param handle  allocated private structure by libavcodec
2061
 *                for initialization pass NULL - will be returned pout
2062
 *                user is supposed to know nothing about its structure
2063
 * \param cmd     type of operation to be performed
2064
 * \param pint    input parameter
2065
 * \param pout    output parameter
2066
 *
2067
 * \returns  command status - eventually for query command it might return
2068
 * integer resulting value
2069
 */
2070
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2071

    
2072
/* frame parsing */
2073
typedef struct AVCodecParserContext {
2074
    void *priv_data;
2075
    struct AVCodecParser *parser;
2076
    int64_t frame_offset; /* offset of the current frame */
2077
    int64_t cur_offset; /* current offset 
2078
                           (incremented by each av_parser_parse()) */
2079
    int64_t last_frame_offset; /* offset of the last frame */
2080
    /* video info */
2081
    int pict_type; /* XXX: put it back in AVCodecContext */
2082
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2083
    int64_t pts;     /* pts of the current frame */
2084
    int64_t dts;     /* dts of the current frame */
2085

    
2086
    /* private data */
2087
    int64_t last_pts;
2088
    int64_t last_dts;
2089

    
2090
#define AV_PARSER_PTS_NB 4
2091
    int cur_frame_start_index;
2092
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2093
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2094
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2095
} AVCodecParserContext;
2096

    
2097
typedef struct AVCodecParser {
2098
    int codec_ids[3]; /* several codec IDs are permitted */
2099
    int priv_data_size;
2100
    int (*parser_init)(AVCodecParserContext *s);
2101
    int (*parser_parse)(AVCodecParserContext *s, 
2102
                        AVCodecContext *avctx,
2103
                        uint8_t **poutbuf, int *poutbuf_size, 
2104
                        const uint8_t *buf, int buf_size);
2105
    void (*parser_close)(AVCodecParserContext *s);
2106
    struct AVCodecParser *next;
2107
} AVCodecParser;
2108

    
2109
extern AVCodecParser *av_first_parser;
2110

    
2111
void av_register_codec_parser(AVCodecParser *parser);
2112
AVCodecParserContext *av_parser_init(int codec_id);
2113
int av_parser_parse(AVCodecParserContext *s, 
2114
                    AVCodecContext *avctx,
2115
                    uint8_t **poutbuf, int *poutbuf_size, 
2116
                    const uint8_t *buf, int buf_size,
2117
                    int64_t pts, int64_t dts);
2118
void av_parser_close(AVCodecParserContext *s);
2119

    
2120
extern AVCodecParser mpegvideo_parser;
2121
extern AVCodecParser mpeg4video_parser;
2122
extern AVCodecParser h263_parser;
2123
extern AVCodecParser h264_parser;
2124
extern AVCodecParser mpegaudio_parser;
2125
extern AVCodecParser ac3_parser;
2126

    
2127
/* memory */
2128
void *av_malloc(unsigned int size);
2129
void *av_mallocz(unsigned int size);
2130
void *av_realloc(void *ptr, unsigned int size);
2131
void av_free(void *ptr);
2132
char *av_strdup(const char *s);
2133
void av_freep(void *ptr);
2134
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2135
/* for static data only */
2136
/* call av_free_static to release all staticaly allocated tables */
2137
void av_free_static(void);
2138
void *av_mallocz_static(unsigned int size);
2139

    
2140
/* add by bero : in adx.c */
2141
int is_adx(const unsigned char *buf,size_t bufsize);
2142

    
2143
void img_copy(AVPicture *dst, const AVPicture *src,
2144
              int pix_fmt, int width, int height);
2145

    
2146
/* av_log API */
2147

    
2148
#include <stdarg.h>
2149

    
2150
#define AV_LOG_QUIET -1
2151
#define AV_LOG_ERROR 0
2152
#define AV_LOG_INFO 1
2153
#define AV_LOG_DEBUG 2
2154

    
2155
extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2156
extern void av_vlog(void*, int level, const char *fmt, va_list);
2157
extern int av_log_get_level(void);
2158
extern void av_log_set_level(int);
2159
extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2160

    
2161
/* endian macros */
2162
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2163
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2164
                   (((uint8_t*)(x))[1] << 16) | \
2165
                   (((uint8_t*)(x))[2] << 8) | \
2166
                    ((uint8_t*)(x))[3])
2167
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2168
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2169
                   (((uint8_t*)(x))[2] << 16) | \
2170
                   (((uint8_t*)(x))[1] << 8) | \
2171
                    ((uint8_t*)(x))[0])
2172

    
2173
#ifdef __cplusplus
2174
}
2175
#endif
2176

    
2177
#endif /* AVCODEC_H */