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#ifndef AVCODEC_H
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#define AVCODEC_H
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/**
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 * @file avcodec.h
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 * external api header.
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 */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "common.h"
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#include "rational.h"
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#include <sys/types.h> /* size_t */
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#define FFMPEG_VERSION_INT     0x000409
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#define FFMPEG_VERSION         "0.4.9-pre1"
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#define LIBAVCODEC_BUILD       4721
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#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
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#define LIBAVCODEC_VERSION     FFMPEG_VERSION
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#define AV_STRINGIFY(s)        AV_TOSTRING(s)
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#define AV_TOSTRING(s) #s
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#define LIBAVCODEC_IDENT        "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
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#define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
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#define AV_TIME_BASE 1000000
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enum CodecID {
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    CODEC_ID_NONE, 
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    CODEC_ID_MPEG1VIDEO,
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    CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
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    CODEC_ID_MPEG2VIDEO_XVMC,
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    CODEC_ID_H261,
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    CODEC_ID_H263,
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    CODEC_ID_RV10,
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    CODEC_ID_RV20,
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    CODEC_ID_MP2,
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    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
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    CODEC_ID_VORBIS,
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    CODEC_ID_AC3,
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    CODEC_ID_MJPEG,
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    CODEC_ID_MJPEGB,
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    CODEC_ID_LJPEG,
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    CODEC_ID_SP5X,
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    CODEC_ID_MPEG4,
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    CODEC_ID_RAWVIDEO,
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    CODEC_ID_MSMPEG4V1,
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    CODEC_ID_MSMPEG4V2,
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    CODEC_ID_MSMPEG4V3,
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    CODEC_ID_WMV1,
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    CODEC_ID_WMV2,
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    CODEC_ID_H263P,
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    CODEC_ID_H263I,
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    CODEC_ID_FLV1,
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    CODEC_ID_SVQ1,
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    CODEC_ID_SVQ3,
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    CODEC_ID_DVVIDEO,
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    CODEC_ID_DVAUDIO,
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    CODEC_ID_WMAV1,
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    CODEC_ID_WMAV2,
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    CODEC_ID_MACE3,
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    CODEC_ID_MACE6,
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    CODEC_ID_HUFFYUV,
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    CODEC_ID_CYUV,
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    CODEC_ID_H264,
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    CODEC_ID_INDEO3,
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    CODEC_ID_VP3,
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    CODEC_ID_THEORA,
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    CODEC_ID_AAC,
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    CODEC_ID_MPEG4AAC,
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    CODEC_ID_ASV1,
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    CODEC_ID_ASV2,
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    CODEC_ID_FFV1,
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    CODEC_ID_4XM,
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    CODEC_ID_VCR1,
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    CODEC_ID_CLJR,
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    CODEC_ID_MDEC,
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    CODEC_ID_ROQ,
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    CODEC_ID_INTERPLAY_VIDEO,
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    CODEC_ID_XAN_WC3,
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    CODEC_ID_XAN_WC4,
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    CODEC_ID_RPZA,
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    CODEC_ID_CINEPAK,
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    CODEC_ID_WS_VQA,
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    CODEC_ID_MSRLE,
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    CODEC_ID_MSVIDEO1,
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    CODEC_ID_IDCIN,
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    CODEC_ID_8BPS,
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    CODEC_ID_SMC,
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    CODEC_ID_FLIC,
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    CODEC_ID_TRUEMOTION1,
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    CODEC_ID_VMDVIDEO,
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    CODEC_ID_VMDAUDIO,
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    CODEC_ID_MSZH,
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    CODEC_ID_ZLIB,
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    CODEC_ID_SONIC,
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    CODEC_ID_SONIC_LS,
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    CODEC_ID_QTRLE,
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    CODEC_ID_SNOW,
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    CODEC_ID_TSCC,
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    CODEC_ID_ULTI,
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    /* 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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    CODEC_ID_DTS,
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    CODEC_ID_XVID,
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};
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/* CODEC_ID_MP3LAME is absolete */
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#define CODEC_ID_MP3LAME CODEC_ID_MP3
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enum CodecType {
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    CODEC_TYPE_UNKNOWN = -1,
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    CODEC_TYPE_VIDEO,
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    CODEC_TYPE_AUDIO,
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    CODEC_TYPE_DATA,
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};
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/**
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 * Pixel format. Notes: 
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 *
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 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
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 * color is put together as:
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 *  (A << 24) | (R << 16) | (G << 8) | B
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 * This is stored as BGRA on little endian CPU architectures and ARGB on
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 * big endian CPUs.
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 *
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 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
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 * image data is stored in AVFrame.data[0]. The palette is transported in
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 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
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 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
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 * also endian-specific). Note also that the individual RGB palette
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 * components stored in AVFrame.data[1] should be in the range 0..255.
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 * This is important as many custom PAL8 video codecs that were designed
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 * to run on the IBM VGA graphics adapter use 6-bit palette components.
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 */
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enum PixelFormat {
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    PIX_FMT_YUV420P,   ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
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    PIX_FMT_YUV422,    ///< Packed pixel, Y0 Cb Y1 Cr 
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    PIX_FMT_RGB24,     ///< Packed pixel, 3 bytes per pixel, RGBRGB...
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    PIX_FMT_BGR24,     ///< Packed pixel, 3 bytes per pixel, BGRBGR...
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    PIX_FMT_YUV422P,   ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
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    PIX_FMT_YUV444P,   ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
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    PIX_FMT_RGBA32,    ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
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    PIX_FMT_YUV410P,   ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
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    PIX_FMT_YUV411P,   ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
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    PIX_FMT_RGB565,    ///< always stored in cpu endianness 
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    PIX_FMT_RGB555,    ///< always stored in cpu endianness, most significant bit to 1 
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    PIX_FMT_GRAY8,
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    PIX_FMT_MONOWHITE, ///< 0 is white 
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    PIX_FMT_MONOBLACK, ///< 0 is black 
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    PIX_FMT_PAL8,      ///< 8 bit with RGBA palette 
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    PIX_FMT_YUVJ420P,  ///< Planar YUV 4:2:0 full scale (jpeg)
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    PIX_FMT_YUVJ422P,  ///< Planar YUV 4:2:2 full scale (jpeg)
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    PIX_FMT_YUVJ444P,  ///< Planar YUV 4:4:4 full scale (jpeg)
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    PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
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    PIX_FMT_XVMC_MPEG2_IDCT,
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    PIX_FMT_UYVY422,   ///< Packed pixel, Cb Y0 Cr Y1 
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    PIX_FMT_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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#define CODEC_FLAG2_FAST          0x00000001 ///< allow non spec compliant speedup tricks
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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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/** codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data */
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#define CODEC_CAP_DELAY           0x0020
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//the following defines might change, so dont expect compatibility if u use them
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#define MB_TYPE_INTRA4x4   0x0001
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#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
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#define MB_TYPE_INTRA_PCM  0x0004 //FIXME h264 specific
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#define MB_TYPE_16x16      0x0008
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#define MB_TYPE_16x8       0x0010
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#define MB_TYPE_8x16       0x0020
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#define MB_TYPE_8x8        0x0040
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#define MB_TYPE_INTERLACED 0x0080
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#define MB_TYPE_DIRECT2     0x0100 //FIXME
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#define MB_TYPE_ACPRED     0x0200
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#define MB_TYPE_GMC        0x0400
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#define MB_TYPE_SKIP       0x0800
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#define MB_TYPE_P0L0       0x1000
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#define MB_TYPE_P1L0       0x2000
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#define MB_TYPE_P0L1       0x4000
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#define MB_TYPE_P1L1       0x8000
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#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
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#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
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#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
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#define MB_TYPE_QUANT      0x00010000
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#define MB_TYPE_CBP        0x00020000
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//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
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/**
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 * Pan Scan area.
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 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
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 */
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typedef struct AVPanScan{
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    /**
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     * id.
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     * - encoding: set by user.
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     * - decoding: set by lavc
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     */
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    int id;
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    /**
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     * width and height in 1/16 pel
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     * - encoding: set by user.
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     * - decoding: set by lavc
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     */
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    int width;
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    int height;
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    /**
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     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
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     * - encoding: set by user.
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     * - decoding: set by lavc
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     */
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    int16_t position[3][2];
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}AVPanScan;
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#define FF_COMMON_FRAME \
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    /**\
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     * pointer to the picture planes.\
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     * this might be different from the first allocated byte\
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     * - encoding: \
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     * - decoding: \
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     */\
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    uint8_t *data[4];\
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    int linesize[4];\
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    /**\
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     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
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     * this isnt used by lavc unless the default get/release_buffer() is used\
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     * - encoding: \
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     * - decoding: \
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     */\
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    uint8_t *base[4];\
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    /**\
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     * 1 -> keyframe, 0-> not\
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     * - encoding: set by lavc\
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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\
398
     */\
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    int64_t pts;\
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\
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    /**\
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     * picture number in bitstream order.\
403
     * - encoding: set by\
404
     * - 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.\
409
     * - encoding: set by\
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     * - decoding: set by lavc\
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     */\
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    int display_picture_number;\
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\
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    /**\
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     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
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     * - encoding: set by lavc for coded_picture (and set by user for input)\
417
     * - decoding: set by lavc\
418
     */\
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    int quality; \
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\
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    /**\
422
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
423
     * set to INT_MAX if the buffer has not been used yet \
424
     * - encoding: unused\
425
     * - decoding: MUST be set by get_buffer()\
426
     */\
427
    int age;\
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\
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    /**\
430
     * is this picture used as reference\
431
     * - encoding: unused\
432
     * - decoding: set by lavc (before get_buffer() call))\
433
     */\
434
    int reference;\
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\
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    /**\
437
     * QP table\
438
     * - encoding: unused\
439
     * - decoding: set by lavc\
440
     */\
441
    int8_t *qscale_table;\
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    /**\
443
     * QP store stride\
444
     * - encoding: unused\
445
     * - decoding: set by lavc\
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     */\
447
    int qstride;\
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\
449
    /**\
450
     * mbskip_table[mb]>=1 if MB didnt change\
451
     * stride= mb_width = (width+15)>>4\
452
     * - encoding: unused\
453
     * - decoding: set by lavc\
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     */\
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    uint8_t *mbskip_table;\
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\
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    /**\
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     * Motion vector table\
459
     * - encoding: set by user\
460
     * - decoding: set by lavc\
461
     */\
462
    int16_t (*motion_val[2])[2];\
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\
464
    /**\
465
     * Macroblock type table\
466
     * mb_type_base + mb_width + 2\
467
     * - encoding: set by user\
468
     * - decoding: set by lavc\
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     */\
470
    uint32_t *mb_type;\
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\
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    /**\
473
     * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
474
     * - encoding: unused\
475
     * - decoding: set by lavc\
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     */\
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    uint8_t motion_subsample_log2;\
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\
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    /**\
480
     * for some private data of the user\
481
     * - encoding: unused\
482
     * - decoding: set by user\
483
     */\
484
    void *opaque;\
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\
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    /**\
487
     * error\
488
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
489
     * - decoding: unused\
490
     */\
491
    uint64_t error[4];\
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\
493
    /**\
494
     * type of the buffer (to keep track of who has to dealloc data[*])\
495
     * - encoding: set by the one who allocs it\
496
     * - decoding: set by the one who allocs it\
497
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
498
     */\
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    int type;\
500
    \
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    /**\
502
     * when decoding, this signal how much the picture must be delayed.\
503
     * extra_delay = repeat_pict / (2*fps)\
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     * - encoding: unused\
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     * - decoding: set by lavc\
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     */\
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    int repeat_pict;\
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    \
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    /**\
510
     * \
511
     */\
512
    int qscale_type;\
513
    \
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    /**\
515
     * The content of the picture is interlaced.\
516
     * - encoding: set by user\
517
     * - decoding: set by lavc (default 0)\
518
     */\
519
    int interlaced_frame;\
520
    \
521
    /**\
522
     * if the content is interlaced, is top field displayed first.\
523
     * - encoding: set by user\
524
     * - decoding: set by lavc\
525
     */\
526
    int top_field_first;\
527
    \
528
    /**\
529
     * Pan scan.\
530
     * - encoding: set by user\
531
     * - decoding: set by lavc\
532
     */\
533
    AVPanScan *pan_scan;\
534
    \
535
    /**\
536
     * tell user application that palette has changed from previous frame.\
537
     * - encoding: ??? (no palette-enabled encoder yet)\
538
     * - decoding: set by lavc (default 0)\
539
     */\
540
    int palette_has_changed;\
541
    \
542
    /**\
543
     * Codec suggestion on buffer type if != 0\
544
     * - encoding: unused\
545
     * - decoding: set by lavc (before get_buffer() call))\
546
     */\
547
    int buffer_hints;\
548
\
549
    /**\
550
     * DCT coeffitients\
551
     * - encoding: unused\
552
     * - decoding: set by lavc\
553
     */\
554
    short *dct_coeff;\
555
\
556
    /**\
557
     * Motion referece frame index\
558
     * - encoding: set by user\
559
     * - decoding: set by lavc\
560
     */\
561
    int8_t *ref_index[2];
562

    
563
#define FF_QSCALE_TYPE_MPEG1        0
564
#define FF_QSCALE_TYPE_MPEG2        1
565

    
566
#define FF_BUFFER_TYPE_INTERNAL 1
567
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
568
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
569
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
570

    
571

    
572
#define FF_I_TYPE 1 // Intra
573
#define FF_P_TYPE 2 // Predicted
574
#define FF_B_TYPE 3 // Bi-dir predicted
575
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
576
#define FF_SI_TYPE 5
577
#define FF_SP_TYPE 6
578

    
579
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
580
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
581
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
582
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
583

    
584
/**
585
 * Audio Video Frame.
586
 */
587
typedef struct AVFrame {
588
    FF_COMMON_FRAME
589
} AVFrame;
590

    
591
#define DEFAULT_FRAME_RATE_BASE 1001000
592

    
593
/**
594
 * Used by av_log
595
 */
596
typedef struct AVCLASS AVClass;
597
struct AVCLASS {
598
    const char* class_name;
599
    const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
600
                                        or AVFormatContext, which begin with an AVClass.
601
                                        Needed because av_log is in libavcodec and has no visibility
602
                                        of AVIn/OutputFormat */
603
};
604

    
605
/**
606
 * main external api structure.
607
 */
608
typedef struct AVCodecContext {
609
    /**
610
     * Info on struct for av_log
611
     * - set by avcodec_alloc_context
612
     */
613
    AVClass *av_class;
614
    /**
615
     * the average bitrate.
616
     * - encoding: set by user. unused for constant quantizer encoding
617
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
618
     */
619
    int bit_rate;
620

    
621
    /**
622
     * number of bits the bitstream is allowed to diverge from the reference.
623
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
624
     * - encoding: set by user. unused for constant quantizer encoding
625
     * - decoding: unused
626
     */
627
    int bit_rate_tolerance; 
628

    
629
    /**
630
     * CODEC_FLAG_*.
631
     * - encoding: set by user.
632
     * - decoding: set by user.
633
     */
634
    int flags;
635

    
636
    /**
637
     * some codecs needs additionnal format info. It is stored here
638
     * - encoding: set by user. 
639
     * - decoding: set by lavc. (FIXME is this ok?)
640
     */
641
    int sub_id;
642

    
643
    /**
644
     * motion estimation algorithm used for video coding.
645
     * - encoding: MUST be set by user.
646
     * - decoding: unused
647
     */
648
    int me_method;
649

    
650
    /**
651
     * some codecs need / can use extra-data like huffman tables.
652
     * mjpeg: huffman tables
653
     * rv10: additional flags
654
     * mpeg4: global headers (they can be in the bitstream or here)
655
     * - encoding: set/allocated/freed by lavc.
656
     * - decoding: set/allocated/freed by user.
657
     */
658
    void *extradata;
659
    int extradata_size;
660
    
661
    /* video only */
662
    /**
663
     * frames per sec multiplied by frame_rate_base.
664
     * for variable fps this is the precission, so if the timestamps 
665
     * can be specified in msec precssion then this is 1000*frame_rate_base
666
     * - encoding: MUST be set by user
667
     * - decoding: set by lavc. 0 or the frame_rate if available
668
     */
669
    int frame_rate;
670
    
671
    /**
672
     * width / height.
673
     * - encoding: MUST be set by user. 
674
     * - decoding: set by user if known, codec should override / dynamically change if needed
675
     */
676
    int width, height;
677
    
678
#define FF_ASPECT_EXTENDED 15
679

    
680
    /**
681
     * the number of pictures in a group of pitures, or 0 for intra_only.
682
     * - encoding: set by user.
683
     * - decoding: unused
684
     */
685
    int gop_size;
686

    
687
    /**
688
     * pixel format, see PIX_FMT_xxx.
689
     * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
690
     *                    conversion is in order. This only works for
691
     *                    codecs with one supported pix_fmt, we should
692
     *                    do something for a generic case as well.
693
     * - decoding: set by lavc.
694
     */
695
    enum PixelFormat pix_fmt;
696
 
697
    /**
698
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
699
     * has to read frames at native frame rate.
700
     * - encoding: set by user.
701
     * - decoding: unused.
702
     */
703
    int rate_emu;
704
       
705
    /**
706
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
707
     * decoder to draw an horizontal band. It improve cache usage. Not
708
     * all codecs can do that. You must check the codec capabilities
709
     * before
710
     * - encoding: unused
711
     * - decoding: set by user.
712
     * @param height the height of the slice
713
     * @param y the y position of the slice
714
     * @param type 1->top field, 2->bottom field, 3->frame
715
     * @param offset offset into the AVFrame.data from which the slice should be read
716
     */
717
    void (*draw_horiz_band)(struct AVCodecContext *s,
718
                            const AVFrame *src, int offset[4],
719
                            int y, int type, int height);
720

    
721
    /* audio only */
722
    int sample_rate; ///< samples per sec 
723
    int channels;
724
    int sample_fmt;  ///< sample format, currenly unused 
725

    
726
    /* the following data should not be initialized */
727
    int frame_size;     ///< in samples, initialized when calling 'init' 
728
    int frame_number;   ///< audio or video frame number 
729
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
730
    
731
    /**
732
     * number of frames the decoded output will be delayed relative to 
733
     * the encoded input.
734
     * - encoding: set by lavc.
735
     * - decoding: unused
736
     */
737
    int delay;
738
    
739
    /* - encoding parameters */
740
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
741
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
742
    
743
    /**
744
     * minimum quantizer.
745
     * - encoding: set by user.
746
     * - decoding: unused
747
     */
748
    int qmin;
749

    
750
    /**
751
     * maximum quantizer.
752
     * - encoding: set by user.
753
     * - decoding: unused
754
     */
755
    int qmax;
756

    
757
    /**
758
     * maximum quantizer difference etween frames.
759
     * - encoding: set by user.
760
     * - decoding: unused
761
     */
762
    int max_qdiff;
763

    
764
    /**
765
     * maximum number of b frames between non b frames.
766
     * note: the output will be delayed by max_b_frames+1 relative to the input
767
     * - encoding: set by user.
768
     * - decoding: unused
769
     */
770
    int max_b_frames;
771

    
772
    /**
773
     * qscale factor between ip and b frames.
774
     * - encoding: set by user.
775
     * - decoding: unused
776
     */
777
    float b_quant_factor;
778
    
779
    /** obsolete FIXME remove */
780
    int rc_strategy;
781
    int b_frame_strategy;
782

    
783
    /**
784
     * hurry up amount.
785
     * - encoding: unused
786
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
787
     */
788
    int hurry_up;
789
    
790
    struct AVCodec *codec;
791
    
792
    void *priv_data;
793

    
794
    /* unused, FIXME remove*/
795
    int rtp_mode;
796
    
797
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
798
                            /* do it's best to deliver a chunk with size    */
799
                            /* below rtp_payload_size, the chunk will start */
800
                            /* with a start code on some codecs like H.263  */
801
                            /* This doesn't take account of any particular  */
802
                            /* headers inside the transmited RTP payload    */
803

    
804
    
805
    /* The RTP callcack: This function is called  */
806
    /* every time the encoder as a packet to send */
807
    /* Depends on the encoder if the data starts  */
808
    /* with a Start Code (it should) H.263 does   */
809
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number); 
810

    
811
    /* statistics, used for 2-pass encoding */
812
    int mv_bits;
813
    int header_bits;
814
    int i_tex_bits;
815
    int p_tex_bits;
816
    int i_count;
817
    int p_count;
818
    int skip_count;
819
    int misc_bits;
820
    
821
    /**
822
     * number of bits used for the previously encoded frame.
823
     * - encoding: set by lavc
824
     * - decoding: unused
825
     */
826
    int frame_bits;
827

    
828
    /**
829
     * private data of the user, can be used to carry app specific stuff.
830
     * - encoding: set by user
831
     * - decoding: set by user
832
     */
833
    void *opaque;
834

    
835
    char codec_name[32];
836
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
837
    enum CodecID codec_id; /* see CODEC_ID_xxx */
838
    
839
    /**
840
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
841
     * this is used to workaround some encoder bugs
842
     * - encoding: set by user, if not then the default based on codec_id will be used
843
     * - decoding: set by user, will be converted to upper case by lavc during init
844
     */
845
    unsigned int codec_tag;
846
    
847
    /**
848
     * workaround bugs in encoders which sometimes cannot be detected automatically.
849
     * - encoding: unused
850
     * - decoding: set by user
851
     */
852
    int workaround_bugs;
853
#define FF_BUG_AUTODETECT       1  ///< autodetection
854
#define FF_BUG_OLD_MSMPEG4      2
855
#define FF_BUG_XVID_ILACE       4
856
#define FF_BUG_UMP4             8
857
#define FF_BUG_NO_PADDING       16
858
#define FF_BUG_AMV              32
859
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
860
#define FF_BUG_QPEL_CHROMA      64
861
#define FF_BUG_STD_QPEL         128
862
#define FF_BUG_QPEL_CHROMA2     256
863
#define FF_BUG_DIRECT_BLOCKSIZE 512
864
#define FF_BUG_EDGE             1024
865
#define FF_BUG_HPEL_CHROMA      2048
866
#define FF_BUG_DC_CLIP          4096
867
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
868
        
869
    /**
870
     * luma single coeff elimination threshold.
871
     * - encoding: set by user
872
     * - decoding: unused
873
     */
874
    int luma_elim_threshold;
875
    
876
    /**
877
     * chroma single coeff elimination threshold.
878
     * - encoding: set by user
879
     * - decoding: unused
880
     */
881
    int chroma_elim_threshold;
882
    
883
    /**
884
     * strictly follow the std (MPEG4, ...).
885
     * - encoding: set by user
886
     * - decoding: unused
887
     */
888
    int strict_std_compliance;
889
    
890
    /**
891
     * qscale offset between ip and b frames.
892
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
893
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
894
     * - encoding: set by user.
895
     * - decoding: unused
896
     */
897
    float b_quant_offset;
898
    
899
    /**
900
     * error resilience higher values will detect more errors but may missdetect
901
     * some more or less valid parts as errors.
902
     * - encoding: unused
903
     * - decoding: set by user
904
     */
905
    int error_resilience;
906
#define FF_ER_CAREFULL        1
907
#define FF_ER_COMPLIANT       2
908
#define FF_ER_AGGRESSIVE      3
909
#define FF_ER_VERY_AGGRESSIVE 4
910
    
911
    /**
912
     * called at the beginning of each frame to get a buffer for it.
913
     * if pic.reference is set then the frame will be read later by lavc
914
     * avcodec_align_dimensions() should be used to find the required width and
915
     * height, as they normally need to be rounded up to the next multiple of 16
916
     * - encoding: unused
917
     * - decoding: set by lavc, user can override
918
     */
919
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
920
    
921
    /**
922
     * called to release buffers which where allocated with get_buffer.
923
     * a released buffer can be reused in get_buffer()
924
     * pic.data[*] must be set to NULL
925
     * - encoding: unused
926
     * - decoding: set by lavc, user can override
927
     */
928
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
929

    
930
    /**
931
     * if 1 the stream has a 1 frame delay during decoding.
932
     * - encoding: set by lavc
933
     * - decoding: set by lavc
934
     */
935
    int has_b_frames;
936
    
937
    int block_align; ///< used by some WAV based audio codecs
938
    
939
    int parse_only; /* - decoding only: if true, only parsing is done
940
                       (function avcodec_parse_frame()). The frame
941
                       data is returned. Only MPEG codecs support this now. */
942
    
943
    /**
944
     * 0-> h263 quant 1-> mpeg quant.
945
     * - encoding: set by user.
946
     * - decoding: unused
947
     */
948
    int mpeg_quant;
949
    
950
    /**
951
     * pass1 encoding statistics output buffer.
952
     * - encoding: set by lavc
953
     * - decoding: unused
954
     */
955
    char *stats_out;
956
    
957
    /**
958
     * pass2 encoding statistics input buffer.
959
     * concatenated stuff from stats_out of pass1 should be placed here
960
     * - encoding: allocated/set/freed by user
961
     * - decoding: unused
962
     */
963
    char *stats_in;
964
    
965
    /**
966
     * ratecontrol qmin qmax limiting method.
967
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
968
     * - encoding: set by user.
969
     * - decoding: unused
970
     */
971
    float rc_qsquish;
972

    
973
    float rc_qmod_amp;
974
    int rc_qmod_freq;
975
    
976
    /**
977
     * ratecontrol override, see RcOverride.
978
     * - encoding: allocated/set/freed by user.
979
     * - decoding: unused
980
     */
981
    RcOverride *rc_override;
982
    int rc_override_count;
983
    
984
    /**
985
     * rate control equation.
986
     * - encoding: set by user
987
     * - decoding: unused
988
     */
989
    char *rc_eq;
990
    
991
    /**
992
     * maximum bitrate.
993
     * - encoding: set by user.
994
     * - decoding: unused
995
     */
996
    int rc_max_rate;
997
    
998
    /**
999
     * minimum bitrate.
1000
     * - encoding: set by user.
1001
     * - decoding: unused
1002
     */
1003
    int rc_min_rate;
1004
    
1005
    /**
1006
     * decoder bitstream buffer size.
1007
     * - encoding: set by user.
1008
     * - decoding: unused
1009
     */
1010
    int rc_buffer_size;
1011
    float rc_buffer_aggressivity;
1012

    
1013
    /**
1014
     * qscale factor between p and i frames.
1015
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1016
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1017
     * - encoding: set by user.
1018
     * - decoding: unused
1019
     */
1020
    float i_quant_factor;
1021
    
1022
    /**
1023
     * qscale offset between p and i frames.
1024
     * - encoding: set by user.
1025
     * - decoding: unused
1026
     */
1027
    float i_quant_offset;
1028
    
1029
    /**
1030
     * initial complexity for pass1 ratecontrol.
1031
     * - encoding: set by user.
1032
     * - decoding: unused
1033
     */
1034
    float rc_initial_cplx;
1035

    
1036
    /**
1037
     * dct algorithm, see FF_DCT_* below.
1038
     * - encoding: set by user
1039
     * - decoding: unused
1040
     */
1041
    int dct_algo;
1042
#define FF_DCT_AUTO    0
1043
#define FF_DCT_FASTINT 1
1044
#define FF_DCT_INT     2
1045
#define FF_DCT_MMX     3
1046
#define FF_DCT_MLIB    4
1047
#define FF_DCT_ALTIVEC 5
1048
#define FF_DCT_FAAN    6
1049
    
1050
    /**
1051
     * luminance masking (0-> disabled).
1052
     * - encoding: set by user
1053
     * - decoding: unused
1054
     */
1055
    float lumi_masking;
1056
    
1057
    /**
1058
     * temporary complexity masking (0-> disabled).
1059
     * - encoding: set by user
1060
     * - decoding: unused
1061
     */
1062
    float temporal_cplx_masking;
1063
    
1064
    /**
1065
     * spatial complexity masking (0-> disabled).
1066
     * - encoding: set by user
1067
     * - decoding: unused
1068
     */
1069
    float spatial_cplx_masking;
1070
    
1071
    /**
1072
     * p block masking (0-> disabled).
1073
     * - encoding: set by user
1074
     * - decoding: unused
1075
     */
1076
    float p_masking;
1077

    
1078
    /**
1079
     * darkness masking (0-> disabled).
1080
     * - encoding: set by user
1081
     * - decoding: unused
1082
     */
1083
    float dark_masking;
1084
    
1085
    
1086
    /* for binary compatibility */
1087
    int unused;
1088
    
1089
    /**
1090
     * idct algorithm, see FF_IDCT_* below.
1091
     * - encoding: set by user
1092
     * - decoding: set by user
1093
     */
1094
    int idct_algo;
1095
#define FF_IDCT_AUTO         0
1096
#define FF_IDCT_INT          1
1097
#define FF_IDCT_SIMPLE       2
1098
#define FF_IDCT_SIMPLEMMX    3
1099
#define FF_IDCT_LIBMPEG2MMX  4
1100
#define FF_IDCT_PS2          5
1101
#define FF_IDCT_MLIB         6
1102
#define FF_IDCT_ARM          7
1103
#define FF_IDCT_ALTIVEC      8
1104
#define FF_IDCT_SH4          9
1105
#define FF_IDCT_SIMPLEARM    10
1106

    
1107
    /**
1108
     * slice count.
1109
     * - encoding: set by lavc
1110
     * - decoding: set by user (or 0)
1111
     */
1112
    int slice_count;
1113
    /**
1114
     * slice offsets in the frame in bytes.
1115
     * - encoding: set/allocated by lavc
1116
     * - decoding: set/allocated by user (or NULL)
1117
     */
1118
    int *slice_offset;
1119

    
1120
    /**
1121
     * error concealment flags.
1122
     * - encoding: unused
1123
     * - decoding: set by user
1124
     */
1125
    int error_concealment;
1126
#define FF_EC_GUESS_MVS   1
1127
#define FF_EC_DEBLOCK     2
1128

    
1129
    /**
1130
     * dsp_mask could be add used to disable unwanted CPU features
1131
     * CPU features (i.e. MMX, SSE. ...)
1132
     *
1133
     * with FORCE flag you may instead enable given CPU features
1134
     * (Dangerous: usable in case of misdetection, improper usage however will
1135
     * result into program crash)
1136
     */
1137
    unsigned dsp_mask;
1138
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1139
    /* lower 16 bits - CPU features */
1140
#ifdef HAVE_MMX
1141
#define FF_MM_MMX        0x0001 /* standard MMX */
1142
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1143
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1144
#define FF_MM_SSE        0x0008 /* SSE functions */
1145
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1146
#endif /* HAVE_MMX */
1147

    
1148
    /**
1149
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1150
     * - encoding: set by lavc
1151
     * - decoding: set by user
1152
     */
1153
     int bits_per_sample;
1154
    
1155
    /**
1156
     * prediction method (needed for huffyuv).
1157
     * - encoding: set by user
1158
     * - decoding: unused
1159
     */
1160
     int prediction_method;
1161
#define FF_PRED_LEFT   0
1162
#define FF_PRED_PLANE  1
1163
#define FF_PRED_MEDIAN 2
1164
    
1165
    /**
1166
     * sample aspect ratio (0 if unknown).
1167
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1168
     * - encoding: set by user.
1169
     * - decoding: set by lavc.
1170
     */
1171
    AVRational sample_aspect_ratio;
1172

    
1173
    /**
1174
     * the picture in the bitstream.
1175
     * - encoding: set by lavc
1176
     * - decoding: set by lavc
1177
     */
1178
    AVFrame *coded_frame;
1179

    
1180
    /**
1181
     * debug.
1182
     * - encoding: set by user.
1183
     * - decoding: set by user.
1184
     */
1185
    int debug;
1186
#define FF_DEBUG_PICT_INFO 1
1187
#define FF_DEBUG_RC        2
1188
#define FF_DEBUG_BITSTREAM 4
1189
#define FF_DEBUG_MB_TYPE   8
1190
#define FF_DEBUG_QP        16
1191
#define FF_DEBUG_MV        32
1192
#define FF_DEBUG_DCT_COEFF 0x00000040
1193
#define FF_DEBUG_SKIP      0x00000080
1194
#define FF_DEBUG_STARTCODE 0x00000100
1195
#define FF_DEBUG_PTS       0x00000200
1196
#define FF_DEBUG_ER        0x00000400
1197
#define FF_DEBUG_MMCO      0x00000800
1198
#define FF_DEBUG_BUGS      0x00001000
1199
#define FF_DEBUG_VIS_QP    0x00002000
1200
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1201
    
1202
    /**
1203
     * debug.
1204
     * - encoding: set by user.
1205
     * - decoding: set by user.
1206
     */
1207
    int debug_mv;
1208
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1209
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1210
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1211

    
1212
    /**
1213
     * error.
1214
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1215
     * - decoding: unused
1216
     */
1217
    uint64_t error[4];
1218
    
1219
    /**
1220
     * minimum MB quantizer.
1221
     * - encoding: set by user.
1222
     * - decoding: unused
1223
     */
1224
    int mb_qmin;
1225

    
1226
    /**
1227
     * maximum MB quantizer.
1228
     * - encoding: set by user.
1229
     * - decoding: unused
1230
     */
1231
    int mb_qmax;
1232
    
1233
    /**
1234
     * motion estimation compare function.
1235
     * - encoding: set by user.
1236
     * - decoding: unused
1237
     */
1238
    int me_cmp;
1239
    /**
1240
     * subpixel motion estimation compare function.
1241
     * - encoding: set by user.
1242
     * - decoding: unused
1243
     */
1244
    int me_sub_cmp;
1245
    /**
1246
     * macroblock compare function (not supported yet).
1247
     * - encoding: set by user.
1248
     * - decoding: unused
1249
     */
1250
    int mb_cmp;
1251
    /**
1252
     * interlaced dct compare function
1253
     * - encoding: set by user.
1254
     * - decoding: unused
1255
     */
1256
    int ildct_cmp;
1257
#define FF_CMP_SAD  0
1258
#define FF_CMP_SSE  1
1259
#define FF_CMP_SATD 2
1260
#define FF_CMP_DCT  3
1261
#define FF_CMP_PSNR 4
1262
#define FF_CMP_BIT  5
1263
#define FF_CMP_RD   6
1264
#define FF_CMP_ZERO 7
1265
#define FF_CMP_VSAD 8
1266
#define FF_CMP_VSSE 9
1267
#define FF_CMP_NSSE 10
1268
#define FF_CMP_W53  11
1269
#define FF_CMP_W97  12
1270
#define FF_CMP_CHROMA 256
1271
    
1272
    /**
1273
     * ME diamond size & shape.
1274
     * - encoding: set by user.
1275
     * - decoding: unused
1276
     */
1277
    int dia_size;
1278

    
1279
    /**
1280
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1281
     * - encoding: set by user.
1282
     * - decoding: unused
1283
     */
1284
    int last_predictor_count;
1285

    
1286
    /**
1287
     * pre pass for motion estimation.
1288
     * - encoding: set by user.
1289
     * - decoding: unused
1290
     */
1291
    int pre_me;
1292

    
1293
    /**
1294
     * motion estimation pre pass compare function.
1295
     * - encoding: set by user.
1296
     * - decoding: unused
1297
     */
1298
    int me_pre_cmp;
1299

    
1300
    /**
1301
     * ME pre pass diamond size & shape.
1302
     * - encoding: set by user.
1303
     * - decoding: unused
1304
     */
1305
    int pre_dia_size;
1306

    
1307
    /**
1308
     * subpel ME quality.
1309
     * - encoding: set by user.
1310
     * - decoding: unused
1311
     */
1312
    int me_subpel_quality;
1313

    
1314
    /**
1315
     * callback to negotiate the pixelFormat.
1316
     * @param fmt is the list of formats which are supported by the codec,
1317
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1318
     * the first is allways the native one
1319
     * @return the choosen format
1320
     * - encoding: unused
1321
     * - decoding: set by user, if not set then the native format will always be choosen
1322
     */
1323
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1324

    
1325
    /**
1326
     * DTG active format information (additionnal aspect ratio
1327
     * information only used in DVB MPEG2 transport streams). 0 if
1328
     * not set.
1329
     * 
1330
     * - encoding: unused.
1331
     * - decoding: set by decoder 
1332
     */
1333
    int dtg_active_format;
1334
#define FF_DTG_AFD_SAME         8
1335
#define FF_DTG_AFD_4_3          9
1336
#define FF_DTG_AFD_16_9         10
1337
#define FF_DTG_AFD_14_9         11
1338
#define FF_DTG_AFD_4_3_SP_14_9  13
1339
#define FF_DTG_AFD_16_9_SP_14_9 14
1340
#define FF_DTG_AFD_SP_4_3       15
1341

    
1342
    /**
1343
     * Maximum motion estimation search range in subpel units.
1344
     * if 0 then no limit
1345
     * 
1346
     * - encoding: set by user.
1347
     * - decoding: unused.
1348
     */
1349
    int me_range;
1350

    
1351
    /**
1352
     * frame_rate_base.
1353
     * for variable fps this is 1
1354
     * - encoding: set by user.
1355
     * - decoding: set by lavc.
1356
     * @todo move this after frame_rate
1357
     */
1358

    
1359
    int frame_rate_base;
1360
    /**
1361
     * intra quantizer bias.
1362
     * - encoding: set by user.
1363
     * - decoding: unused
1364
     */
1365
    int intra_quant_bias;
1366
#define FF_DEFAULT_QUANT_BIAS 999999
1367
    
1368
    /**
1369
     * inter quantizer bias.
1370
     * - encoding: set by user.
1371
     * - decoding: unused
1372
     */
1373
    int inter_quant_bias;
1374

    
1375
    /**
1376
     * color table ID.
1377
     * - encoding: unused.
1378
     * - decoding: which clrtable should be used for 8bit RGB images
1379
     *             table have to be stored somewhere FIXME
1380
     */
1381
    int color_table_id;
1382
    
1383
    /**
1384
     * internal_buffer count. 
1385
     * Dont touch, used by lavc default_get_buffer()
1386
     */
1387
    int internal_buffer_count;
1388
    
1389
    /**
1390
     * internal_buffers. 
1391
     * Dont touch, used by lavc default_get_buffer()
1392
     */
1393
    void *internal_buffer;
1394

    
1395
#define FF_LAMBDA_SHIFT 7
1396
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1397
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1398
#define FF_LAMBDA_MAX (256*128-1)
1399

    
1400
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1401
    /**
1402
     * global quality for codecs which cannot change it per frame.
1403
     * this should be proportional to MPEG1/2/4 qscale.
1404
     * - encoding: set by user.
1405
     * - decoding: unused
1406
     */
1407
    int global_quality;
1408
    
1409
#define FF_CODER_TYPE_VLC   0
1410
#define FF_CODER_TYPE_AC    1
1411
    /**
1412
     * coder type
1413
     * - encoding: set by user.
1414
     * - decoding: unused
1415
     */
1416
    int coder_type;
1417

    
1418
    /**
1419
     * context model
1420
     * - encoding: set by user.
1421
     * - decoding: unused
1422
     */
1423
    int context_model;
1424
    
1425
    /**
1426
     * slice flags
1427
     * - encoding: unused
1428
     * - decoding: set by user.
1429
     */
1430
    int slice_flags;
1431
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1432
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1433
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1434

    
1435
    /**
1436
     * XVideo Motion Acceleration
1437
     * - encoding: forbidden
1438
     * - decoding: set by decoder
1439
     */
1440
    int xvmc_acceleration;
1441
    
1442
    /**
1443
     * macroblock decision mode
1444
     * - encoding: set by user.
1445
     * - decoding: unused
1446
     */
1447
    int mb_decision;
1448
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1449
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1450
#define FF_MB_DECISION_RD     2        ///< rate distoration
1451

    
1452
    /**
1453
     * custom intra quantization matrix
1454
     * - encoding: set by user, can be NULL
1455
     * - decoding: set by lavc
1456
     */
1457
    uint16_t *intra_matrix;
1458

    
1459
    /**
1460
     * custom inter quantization matrix
1461
     * - encoding: set by user, can be NULL
1462
     * - decoding: set by lavc
1463
     */
1464
    uint16_t *inter_matrix;
1465
    
1466
    /**
1467
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1468
     * this is used to workaround some encoder bugs
1469
     * - encoding: unused
1470
     * - decoding: set by user, will be converted to upper case by lavc during init
1471
     */
1472
    unsigned int stream_codec_tag;
1473

    
1474
    /**
1475
     * scene change detection threshold.
1476
     * 0 is default, larger means fewer detected scene changes
1477
     * - encoding: set by user.
1478
     * - decoding: unused
1479
     */
1480
    int scenechange_threshold;
1481

    
1482
    /**
1483
     * minimum lagrange multipler
1484
     * - encoding: set by user.
1485
     * - decoding: unused
1486
     */
1487
    int lmin;
1488

    
1489
    /**
1490
     * maximum lagrange multipler
1491
     * - encoding: set by user.
1492
     * - decoding: unused
1493
     */
1494
    int lmax;
1495

    
1496
    /**
1497
     * Palette control structure
1498
     * - encoding: ??? (no palette-enabled encoder yet)
1499
     * - decoding: set by user.
1500
     */
1501
    struct AVPaletteControl *palctrl;
1502

    
1503
    /**
1504
     * noise reduction strength
1505
     * - encoding: set by user.
1506
     * - decoding: unused
1507
     */
1508
    int noise_reduction;
1509
    
1510
    /**
1511
     * called at the beginning of a frame to get cr buffer for it.
1512
     * buffer type (size, hints) must be the same. lavc won't check it.
1513
     * lavc will pass previous buffer in pic, function should return
1514
     * same buffer or new buffer with old frame "painted" into it.
1515
     * if pic.data[0] == NULL must behave like get_buffer().
1516
     * - encoding: unused
1517
     * - decoding: set by lavc, user can override
1518
     */
1519
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1520

    
1521
    /**
1522
     * number of bits which should be loaded into the rc buffer before decoding starts
1523
     * - encoding: set by user.
1524
     * - decoding: unused
1525
     */
1526
    int rc_initial_buffer_occupancy;
1527

    
1528
    /**
1529
     *
1530
     * - encoding: set by user.
1531
     * - decoding: unused
1532
     */
1533
    int inter_threshold;
1534

    
1535
    /**
1536
     * CODEC_FLAG2_*.
1537
     * - encoding: set by user.
1538
     * - decoding: set by user.
1539
     */
1540
    int flags2;
1541

    
1542
    /**
1543
     * simulates errors in the bitstream to test error concealment.
1544
     * - encoding: set by user.
1545
     * - decoding: unused.
1546
     */
1547
    int error_rate;
1548
    
1549
    /**
1550
     * MP3 antialias algorithm, see FF_AA_* below.
1551
     * - encoding: unused
1552
     * - decoding: set by user
1553
     */
1554
    int antialias_algo;
1555
#define FF_AA_AUTO    0
1556
#define FF_AA_FASTINT 1 //not implemented yet
1557
#define FF_AA_INT     2
1558
#define FF_AA_FLOAT   3
1559
    /**
1560
     * Quantizer noise shaping.
1561
     * - encoding: set by user
1562
     * - decoding: unused
1563
     */
1564
    int quantizer_noise_shaping;
1565

    
1566
    /**
1567
     * Thread count.
1568
     * is used to decide how many independant tasks should be passed to execute()
1569
     * - encoding: set by user
1570
     * - decoding: set by user
1571
     */
1572
    int thread_count;
1573
    
1574
    /**
1575
     * the codec may call this to execute several independant things. it will return only after
1576
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1577
     * default implementation will execute the parts serially
1578
     * @param count the number of things to execute
1579
     * - encoding: set by lavc, user can override
1580
     * - decoding: set by lavc, user can override
1581
     */
1582
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1583
    
1584
    /**
1585
     * Thread opaque.
1586
     * can be used by execute() to store some per AVCodecContext stuff.
1587
     * - encoding: set by execute()
1588
     * - decoding: set by execute()
1589
     */
1590
    void *thread_opaque;
1591

    
1592
    /**
1593
     * Motion estimation threshold. under which no motion estimation is 
1594
     * performed, but instead the user specified motion vectors are used
1595
     * 
1596
     * - encoding: set by user
1597
     * - decoding: unused
1598
     */
1599
     int me_threshold;
1600

    
1601
    /**
1602
     * Macroblock threshold. under which the user specified macroblock types will be used
1603
     * - encoding: set by user
1604
     * - decoding: unused
1605
     */
1606
     int mb_threshold;
1607

    
1608
    /**
1609
     * precision of the intra dc coefficient - 8.
1610
     * - encoding: set by user
1611
     * - decoding: unused
1612
     */
1613
     int intra_dc_precision;
1614

    
1615
    /**
1616
     * noise vs. sse weight for the nsse comparsion function.
1617
     * - encoding: set by user
1618
     * - decoding: unused
1619
     */
1620
     int nsse_weight;
1621

    
1622
    /**
1623
     * number of macroblock rows at the top which are skiped.
1624
     * - encoding: unused
1625
     * - decoding: set by user
1626
     */
1627
     int skip_top;
1628

    
1629
    /**
1630
     * number of macroblock rows at the bottom which are skiped.
1631
     * - encoding: unused
1632
     * - decoding: set by user
1633
     */
1634
     int skip_bottom;
1635

    
1636
    /**
1637
     * profile
1638
     * - encoding: set by user
1639
     * - decoding: set by lavc
1640
     */
1641
     int profile;
1642
#define FF_PROFILE_UNKNOWN -99
1643

    
1644
    /**
1645
     * level
1646
     * - encoding: set by user
1647
     * - decoding: set by lavc
1648
     */
1649
     int level;
1650
#define FF_LEVEL_UNKNOWN -99
1651
} AVCodecContext;
1652

    
1653

    
1654
/**
1655
 * AVOption.
1656
 */
1657
typedef struct AVOption {
1658
    /** options' name */
1659
    const char *name; /* if name is NULL, it indicates a link to next */
1660
    /** short English text help or const struct AVOption* subpointer */
1661
    const char *help; //        const struct AVOption* sub;
1662
    /** offset to context structure where the parsed value should be stored */
1663
    int offset;
1664
    /** options' type */
1665
    int type;
1666
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1667
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1668
#define FF_OPT_TYPE_INT 3       ///< integer
1669
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1670
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1671
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1672
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1673
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1674
    /** min value  (min == max   ->  no limits) */
1675
    double min;
1676
    /** maximum value for double/int */
1677
    double max;
1678
    /** default boo [0,1]l/double/int value */
1679
    double defval;
1680
    /**
1681
     * default string value (with optional semicolon delimited extra option-list
1682
     * i.e.   option1;option2;option3
1683
     * defval might select other then first argument as default
1684
     */
1685
    const char *defstr;
1686
#define FF_OPT_MAX_DEPTH 10
1687
} AVOption;
1688

    
1689
/**
1690
 * Parse option(s) and sets fields in passed structure
1691
 * @param strct        structure where the parsed results will be written
1692
 * @param list  list with AVOptions
1693
 * @param opts        string with options for parsing
1694
 */
1695
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1696

    
1697

    
1698
/**
1699
 * AVCodec.
1700
 */
1701
typedef struct AVCodec {
1702
    const char *name;
1703
    enum CodecType type;
1704
    int id;
1705
    int priv_data_size;
1706
    int (*init)(AVCodecContext *);
1707
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1708
    int (*close)(AVCodecContext *);
1709
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1710
                  uint8_t *buf, int buf_size);
1711
    int capabilities;
1712
    const AVOption *options;
1713
    struct AVCodec *next;
1714
    void (*flush)(AVCodecContext *);
1715
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1716
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1717
} AVCodec;
1718

    
1719
/**
1720
 * four components are given, that's all.
1721
 * the last component is alpha
1722
 */
1723
typedef struct AVPicture {
1724
    uint8_t *data[4];
1725
    int linesize[4];       ///< number of bytes per line
1726
} AVPicture;
1727

    
1728
/**
1729
 * AVPaletteControl
1730
 * This structure defines a method for communicating palette changes
1731
 * between and demuxer and a decoder.
1732
 */
1733
#define AVPALETTE_SIZE 1024
1734
#define AVPALETTE_COUNT 256
1735
typedef struct AVPaletteControl {
1736

    
1737
    /* demuxer sets this to 1 to indicate the palette has changed;
1738
     * decoder resets to 0 */
1739
    int palette_changed;
1740

    
1741
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1742
     * the individual palette components should be on a 8-bit scale; if
1743
     * the palette data comes from a IBM VGA native format, the component
1744
     * data is probably 6 bits in size and needs to be scaled */
1745
    unsigned int palette[AVPALETTE_COUNT];
1746

    
1747
} AVPaletteControl;
1748

    
1749
extern AVCodec ac3_encoder;
1750
extern AVCodec mp2_encoder;
1751
extern AVCodec mp3lame_encoder;
1752
extern AVCodec oggvorbis_encoder;
1753
extern AVCodec faac_encoder;
1754
extern AVCodec xvid_encoder;
1755
extern AVCodec mpeg1video_encoder;
1756
extern AVCodec mpeg2video_encoder;
1757
extern AVCodec h263_encoder;
1758
extern AVCodec h263p_encoder;
1759
extern AVCodec flv_encoder;
1760
extern AVCodec rv10_encoder;
1761
extern AVCodec rv20_encoder;
1762
extern AVCodec dvvideo_encoder;
1763
extern AVCodec mjpeg_encoder;
1764
extern AVCodec ljpeg_encoder;
1765
extern AVCodec mpeg4_encoder;
1766
extern AVCodec msmpeg4v1_encoder;
1767
extern AVCodec msmpeg4v2_encoder;
1768
extern AVCodec msmpeg4v3_encoder;
1769
extern AVCodec wmv1_encoder;
1770
extern AVCodec wmv2_encoder;
1771
extern AVCodec huffyuv_encoder;
1772
extern AVCodec h264_encoder;
1773
extern AVCodec asv1_encoder;
1774
extern AVCodec asv2_encoder;
1775
extern AVCodec vcr1_encoder;
1776
extern AVCodec ffv1_encoder;
1777
extern AVCodec snow_encoder;
1778
extern AVCodec mdec_encoder;
1779
extern AVCodec zlib_encoder;
1780
extern AVCodec sonic_encoder;
1781
extern AVCodec sonic_ls_encoder;
1782
extern AVCodec svq1_encoder;
1783

    
1784
extern AVCodec h263_decoder;
1785
extern AVCodec h261_decoder;
1786
extern AVCodec mpeg4_decoder;
1787
extern AVCodec msmpeg4v1_decoder;
1788
extern AVCodec msmpeg4v2_decoder;
1789
extern AVCodec msmpeg4v3_decoder;
1790
extern AVCodec wmv1_decoder;
1791
extern AVCodec wmv2_decoder;
1792
extern AVCodec mpeg1video_decoder;
1793
extern AVCodec mpeg2video_decoder;
1794
extern AVCodec mpegvideo_decoder;
1795
extern AVCodec mpeg_xvmc_decoder;
1796
extern AVCodec h263i_decoder;
1797
extern AVCodec flv_decoder;
1798
extern AVCodec rv10_decoder;
1799
extern AVCodec rv20_decoder;
1800
extern AVCodec svq1_decoder;
1801
extern AVCodec svq3_decoder;
1802
extern AVCodec dvvideo_decoder;
1803
extern AVCodec wmav1_decoder;
1804
extern AVCodec wmav2_decoder;
1805
extern AVCodec mjpeg_decoder;
1806
extern AVCodec mjpegb_decoder;
1807
extern AVCodec sp5x_decoder;
1808
extern AVCodec mp2_decoder;
1809
extern AVCodec mp3_decoder;
1810
extern AVCodec mace3_decoder;
1811
extern AVCodec mace6_decoder;
1812
extern AVCodec huffyuv_decoder;
1813
extern AVCodec oggvorbis_decoder;
1814
extern AVCodec cyuv_decoder;
1815
extern AVCodec h264_decoder;
1816
extern AVCodec indeo3_decoder;
1817
extern AVCodec vp3_decoder;
1818
extern AVCodec theora_decoder;
1819
extern AVCodec amr_nb_decoder;
1820
extern AVCodec amr_nb_encoder;
1821
extern AVCodec amr_wb_encoder;
1822
extern AVCodec amr_wb_decoder;
1823
extern AVCodec aac_decoder;
1824
extern AVCodec mpeg4aac_decoder;
1825
extern AVCodec asv1_decoder;
1826
extern AVCodec asv2_decoder;
1827
extern AVCodec vcr1_decoder;
1828
extern AVCodec cljr_decoder;
1829
extern AVCodec ffv1_decoder;
1830
extern AVCodec snow_decoder;
1831
extern AVCodec fourxm_decoder;
1832
extern AVCodec mdec_decoder;
1833
extern AVCodec roq_decoder;
1834
extern AVCodec interplay_video_decoder;
1835
extern AVCodec xan_wc3_decoder;
1836
extern AVCodec rpza_decoder;
1837
extern AVCodec cinepak_decoder;
1838
extern AVCodec msrle_decoder;
1839
extern AVCodec msvideo1_decoder;
1840
extern AVCodec vqa_decoder;
1841
extern AVCodec idcin_decoder;
1842
extern AVCodec eightbps_decoder;
1843
extern AVCodec smc_decoder;
1844
extern AVCodec flic_decoder;
1845
extern AVCodec vmdvideo_decoder;
1846
extern AVCodec vmdaudio_decoder;
1847
extern AVCodec truemotion1_decoder;
1848
extern AVCodec mszh_decoder;
1849
extern AVCodec zlib_decoder;
1850
extern AVCodec ra_144_decoder;
1851
extern AVCodec ra_288_decoder;
1852
extern AVCodec roq_dpcm_decoder;
1853
extern AVCodec interplay_dpcm_decoder;
1854
extern AVCodec xan_dpcm_decoder;
1855
extern AVCodec sonic_decoder;
1856
extern AVCodec qtrle_decoder;
1857
extern AVCodec flac_decoder;
1858
extern AVCodec tscc_decoder;
1859
extern AVCodec ulti_decoder;
1860

    
1861
/* pcm codecs */
1862
#define PCM_CODEC(id, name) \
1863
extern AVCodec name ## _decoder; \
1864
extern AVCodec name ## _encoder
1865

    
1866
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1867
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1868
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1869
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1870
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1871
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1872
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1873
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1874

    
1875
/* adpcm codecs */
1876

    
1877
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1878
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1879
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1880
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1881
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1882
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1883
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1884
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1885
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1886
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1887
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1888
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1889

    
1890
#undef PCM_CODEC
1891

    
1892
/* dummy raw video codec */
1893
extern AVCodec rawvideo_encoder;
1894
extern AVCodec rawvideo_decoder;
1895

    
1896
/* the following codecs use external GPL libs */
1897
extern AVCodec ac3_decoder;
1898
extern AVCodec dts_decoder;
1899

    
1900
/* resample.c */
1901

    
1902
struct ReSampleContext;
1903
struct AVResampleContext;
1904

    
1905
typedef struct ReSampleContext ReSampleContext;
1906

    
1907
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1908
                                     int output_rate, int input_rate);
1909
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1910
void audio_resample_close(ReSampleContext *s);
1911

    
1912
struct AVResampleContext *av_resample_init(int out_rate, int in_rate);
1913
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
1914
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
1915
void av_resample_close(struct AVResampleContext *c);
1916

    
1917
/* YUV420 format is assumed ! */
1918

    
1919
struct ImgReSampleContext;
1920

    
1921
typedef struct ImgReSampleContext ImgReSampleContext;
1922

    
1923
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1924
                                      int input_width, int input_height);
1925

    
1926
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1927
                                      int iwidth, int iheight,
1928
                                      int topBand, int bottomBand,
1929
                                      int leftBand, int rightBand,
1930
                                      int padtop, int padbottom,
1931
                                      int padleft, int padright);
1932

    
1933

    
1934
void img_resample(ImgReSampleContext *s, 
1935
                  AVPicture *output, const AVPicture *input);
1936

    
1937
void img_resample_close(ImgReSampleContext *s);
1938

    
1939
/**
1940
 * Allocate memory for a picture.  Call avpicture_free to free it.
1941
 *
1942
 * @param picture the picture to be filled in.
1943
 * @param pix_fmt the format of the picture.
1944
 * @param width the width of the picture.
1945
 * @param height the height of the picture.
1946
 * @return 0 if successful, -1 if not.
1947
 */
1948
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1949

    
1950
/* Free a picture previously allocated by avpicture_alloc. */
1951
void avpicture_free(AVPicture *picture);
1952

    
1953
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1954
                   int pix_fmt, int width, int height);
1955
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1956
                     unsigned char *dest, int dest_size);
1957
int avpicture_get_size(int pix_fmt, int width, int height);
1958
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1959
const char *avcodec_get_pix_fmt_name(int pix_fmt);
1960
enum PixelFormat avcodec_get_pix_fmt(const char* name);
1961

    
1962
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
1963
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
1964
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
1965
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
1966
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
1967
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1968

    
1969
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1970
                             int has_alpha);
1971
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1972
                              int has_alpha, int *loss_ptr);
1973

    
1974
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
1975
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
1976
int img_get_alpha_info(const AVPicture *src,
1977
                       int pix_fmt, int width, int height);
1978

    
1979
/* convert among pixel formats */
1980
int img_convert(AVPicture *dst, int dst_pix_fmt,
1981
                const AVPicture *src, int pix_fmt, 
1982
                int width, int height);
1983

    
1984
/* deinterlace a picture */
1985
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1986
                          int pix_fmt, int width, int height);
1987

    
1988
/* external high level API */
1989

    
1990
extern AVCodec *first_avcodec;
1991

    
1992
/* returns LIBAVCODEC_VERSION_INT constant */
1993
unsigned avcodec_version(void);
1994
/* returns LIBAVCODEC_BUILD constant */
1995
unsigned avcodec_build(void);
1996
void avcodec_init(void);
1997

    
1998
void register_avcodec(AVCodec *format);
1999
AVCodec *avcodec_find_encoder(enum CodecID id);
2000
AVCodec *avcodec_find_encoder_by_name(const char *name);
2001
AVCodec *avcodec_find_decoder(enum CodecID id);
2002
AVCodec *avcodec_find_decoder_by_name(const char *name);
2003
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2004

    
2005
void avcodec_get_context_defaults(AVCodecContext *s);
2006
AVCodecContext *avcodec_alloc_context(void);
2007
void avcodec_get_frame_defaults(AVFrame *pic);
2008
AVFrame *avcodec_alloc_frame(void);
2009

    
2010
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2011
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2012
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2013
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2014
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2015

    
2016
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2017
void avcodec_thread_free(AVCodecContext *s);
2018
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2019
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2020
//FIXME func typedef
2021

    
2022
/**
2023
 * opens / inits the AVCodecContext.
2024
 * not thread save!
2025
 */
2026
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2027

    
2028
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
2029
                         int *frame_size_ptr,
2030
                         uint8_t *buf, int buf_size);
2031
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
2032
                         int *got_picture_ptr,
2033
                         uint8_t *buf, int buf_size);
2034
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
2035
                        int *data_size_ptr,
2036
                        uint8_t *buf, int buf_size);
2037
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2038
                         const short *samples);
2039
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2040
                         const AVFrame *pict);
2041

    
2042
int avcodec_close(AVCodecContext *avctx);
2043

    
2044
void avcodec_register_all(void);
2045

    
2046
void avcodec_flush_buffers(AVCodecContext *avctx);
2047

    
2048
/* misc usefull functions */
2049

    
2050
/**
2051
 * returns a single letter to describe the picture type
2052
 */
2053
char av_get_pict_type_char(int pict_type);
2054

    
2055
/**
2056
 * reduce a fraction.
2057
 * this is usefull for framerate calculations
2058
 * @param max the maximum allowed for dst_nom & dst_den
2059
 * @return 1 if exact, 0 otherwise
2060
 */
2061
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2062

    
2063
/**
2064
 * rescale a 64bit integer.
2065
 * a simple a*b/c isnt possible as it can overflow
2066
 */
2067
int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2068

    
2069

    
2070
/**
2071
 * Interface for 0.5.0 version
2072
 *
2073
 * do not even think about it's usage for this moment
2074
 */
2075

    
2076
typedef struct {
2077
    /// compressed size used from given memory buffer
2078
    int size;
2079
    /// I/P/B frame type
2080
    int frame_type;
2081
} avc_enc_result_t;
2082

    
2083
/**
2084
 * Commands
2085
 * order can't be changed - once it was defined
2086
 */
2087
typedef enum {
2088
    // general commands
2089
    AVC_OPEN_BY_NAME = 0xACA000,
2090
    AVC_OPEN_BY_CODEC_ID,
2091
    AVC_OPEN_BY_FOURCC,
2092
    AVC_CLOSE,
2093

    
2094
    AVC_FLUSH,
2095
    // pin - struct { uint8_t* src, uint_t src_size }
2096
    // pout - struct { AVPicture* img, consumed_bytes,
2097
    AVC_DECODE,
2098
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
2099
    // pout - uint_t used_from_dest_size
2100
    AVC_ENCODE, 
2101

    
2102
    // query/get video commands
2103
    AVC_GET_VERSION = 0xACB000,
2104
    AVC_GET_WIDTH,
2105
    AVC_GET_HEIGHT,
2106
    AVC_GET_DELAY,
2107
    AVC_GET_QUANT_TABLE,
2108
    // ...
2109

    
2110
    // query/get audio commands
2111
    AVC_GET_FRAME_SIZE = 0xABC000,
2112

    
2113
    // maybe define some simple structure which
2114
    // might be passed to the user - but they can't
2115
    // contain any codec specific parts and these
2116
    // calls are usualy necessary only few times
2117

    
2118
    // set video commands
2119
    AVC_SET_WIDTH = 0xACD000,
2120
    AVC_SET_HEIGHT,
2121

    
2122
    // set video encoding commands
2123
    AVC_SET_FRAME_RATE = 0xACD800,
2124
    AVC_SET_QUALITY,
2125
    AVC_SET_HURRY_UP,
2126

    
2127
    // set audio commands
2128
    AVC_SET_SAMPLE_RATE = 0xACE000,
2129
    AVC_SET_CHANNELS,
2130

    
2131
} avc_cmd_t;
2132

    
2133
/**
2134
 * \param handle  allocated private structure by libavcodec
2135
 *                for initialization pass NULL - will be returned pout
2136
 *                user is supposed to know nothing about its structure
2137
 * \param cmd     type of operation to be performed
2138
 * \param pint    input parameter
2139
 * \param pout    output parameter
2140
 *
2141
 * \returns  command status - eventually for query command it might return
2142
 * integer resulting value
2143
 */
2144
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2145

    
2146
/* frame parsing */
2147
typedef struct AVCodecParserContext {
2148
    void *priv_data;
2149
    struct AVCodecParser *parser;
2150
    int64_t frame_offset; /* offset of the current frame */
2151
    int64_t cur_offset; /* current offset 
2152
                           (incremented by each av_parser_parse()) */
2153
    int64_t last_frame_offset; /* offset of the last frame */
2154
    /* video info */
2155
    int pict_type; /* XXX: put it back in AVCodecContext */
2156
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2157
    int64_t pts;     /* pts of the current frame */
2158
    int64_t dts;     /* dts of the current frame */
2159

    
2160
    /* private data */
2161
    int64_t last_pts;
2162
    int64_t last_dts;
2163
    int fetch_timestamp;
2164

    
2165
#define AV_PARSER_PTS_NB 4
2166
    int cur_frame_start_index;
2167
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2168
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2169
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2170
} AVCodecParserContext;
2171

    
2172
typedef struct AVCodecParser {
2173
    int codec_ids[3]; /* several codec IDs are permitted */
2174
    int priv_data_size;
2175
    int (*parser_init)(AVCodecParserContext *s);
2176
    int (*parser_parse)(AVCodecParserContext *s, 
2177
                        AVCodecContext *avctx,
2178
                        uint8_t **poutbuf, int *poutbuf_size, 
2179
                        const uint8_t *buf, int buf_size);
2180
    void (*parser_close)(AVCodecParserContext *s);
2181
    struct AVCodecParser *next;
2182
} AVCodecParser;
2183

    
2184
extern AVCodecParser *av_first_parser;
2185

    
2186
void av_register_codec_parser(AVCodecParser *parser);
2187
AVCodecParserContext *av_parser_init(int codec_id);
2188
int av_parser_parse(AVCodecParserContext *s, 
2189
                    AVCodecContext *avctx,
2190
                    uint8_t **poutbuf, int *poutbuf_size, 
2191
                    const uint8_t *buf, int buf_size,
2192
                    int64_t pts, int64_t dts);
2193
void av_parser_close(AVCodecParserContext *s);
2194

    
2195
extern AVCodecParser mpegvideo_parser;
2196
extern AVCodecParser mpeg4video_parser;
2197
extern AVCodecParser h261_parser;
2198
extern AVCodecParser h263_parser;
2199
extern AVCodecParser h264_parser;
2200
extern AVCodecParser mpegaudio_parser;
2201
extern AVCodecParser ac3_parser;
2202

    
2203
/* memory */
2204
void *av_malloc(unsigned int size);
2205
void *av_mallocz(unsigned int size);
2206
void *av_realloc(void *ptr, unsigned int size);
2207
void av_free(void *ptr);
2208
char *av_strdup(const char *s);
2209
void av_freep(void *ptr);
2210
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2211
/* for static data only */
2212
/* call av_free_static to release all staticaly allocated tables */
2213
void av_free_static(void);
2214
void *av_mallocz_static(unsigned int size);
2215

    
2216
/* add by bero : in adx.c */
2217
int is_adx(const unsigned char *buf,size_t bufsize);
2218

    
2219
void img_copy(AVPicture *dst, const AVPicture *src,
2220
              int pix_fmt, int width, int height);
2221

    
2222
/* av_log API */
2223

    
2224
#include <stdarg.h>
2225

    
2226
#define AV_LOG_QUIET -1
2227
#define AV_LOG_ERROR 0
2228
#define AV_LOG_INFO 1
2229
#define AV_LOG_DEBUG 2
2230

    
2231
#ifdef __GNUC__
2232
extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2233
#else
2234
extern void av_log(void*, int level, const char *fmt, ...);
2235
#endif
2236

    
2237
extern void av_vlog(void*, int level, const char *fmt, va_list);
2238
extern int av_log_get_level(void);
2239
extern void av_log_set_level(int);
2240
extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2241

    
2242
/* endian macros */
2243
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2244
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2245
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2246
                   (((uint8_t*)(x))[1] << 16) | \
2247
                   (((uint8_t*)(x))[2] << 8) | \
2248
                    ((uint8_t*)(x))[3])
2249
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2250
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2251
                   (((uint8_t*)(x))[2] << 16) | \
2252
                   (((uint8_t*)(x))[1] << 8) | \
2253
                    ((uint8_t*)(x))[0])
2254
#endif
2255

    
2256
#ifdef __cplusplus
2257
}
2258
#endif
2259

    
2260
#endif /* AVCODEC_H */