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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       4720
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#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
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#define LIBAVCODEC_VERSION     FFMPEG_VERSION
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#define AV_STRINGIFY(s)        AV_TOSTRING(s)
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#define AV_TOSTRING(s) #s
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#define LIBAVCODEC_IDENT        "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
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#define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
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#define AV_TIME_BASE 1000000
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enum CodecID {
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    CODEC_ID_NONE, 
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    CODEC_ID_MPEG1VIDEO,
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    CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
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    CODEC_ID_MPEG2VIDEO_XVMC,
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    CODEC_ID_H261,
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    CODEC_ID_H263,
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    CODEC_ID_RV10,
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    CODEC_ID_RV20,
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    CODEC_ID_MP2,
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    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
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    CODEC_ID_VORBIS,
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    CODEC_ID_AC3,
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    CODEC_ID_MJPEG,
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    CODEC_ID_MJPEGB,
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    CODEC_ID_LJPEG,
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    CODEC_ID_SP5X,
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    CODEC_ID_MPEG4,
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    CODEC_ID_RAWVIDEO,
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    CODEC_ID_MSMPEG4V1,
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    CODEC_ID_MSMPEG4V2,
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    CODEC_ID_MSMPEG4V3,
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    CODEC_ID_WMV1,
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    CODEC_ID_WMV2,
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    CODEC_ID_H263P,
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    CODEC_ID_H263I,
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    CODEC_ID_FLV1,
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    CODEC_ID_SVQ1,
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    CODEC_ID_SVQ3,
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    CODEC_ID_DVVIDEO,
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    CODEC_ID_DVAUDIO,
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    CODEC_ID_WMAV1,
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    CODEC_ID_WMAV2,
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    CODEC_ID_MACE3,
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    CODEC_ID_MACE6,
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    CODEC_ID_HUFFYUV,
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    CODEC_ID_CYUV,
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    CODEC_ID_H264,
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    CODEC_ID_INDEO3,
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    CODEC_ID_VP3,
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    CODEC_ID_THEORA,
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    CODEC_ID_AAC,
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    CODEC_ID_MPEG4AAC,
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    CODEC_ID_ASV1,
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    CODEC_ID_ASV2,
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    CODEC_ID_FFV1,
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    CODEC_ID_4XM,
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    CODEC_ID_VCR1,
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    CODEC_ID_CLJR,
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    CODEC_ID_MDEC,
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    CODEC_ID_ROQ,
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    CODEC_ID_INTERPLAY_VIDEO,
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    CODEC_ID_XAN_WC3,
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    CODEC_ID_XAN_WC4,
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    CODEC_ID_RPZA,
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    CODEC_ID_CINEPAK,
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    CODEC_ID_WS_VQA,
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    CODEC_ID_MSRLE,
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    CODEC_ID_MSVIDEO1,
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    CODEC_ID_IDCIN,
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    CODEC_ID_8BPS,
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    CODEC_ID_SMC,
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    CODEC_ID_FLIC,
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    CODEC_ID_TRUEMOTION1,
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    CODEC_ID_VMDVIDEO,
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    CODEC_ID_VMDAUDIO,
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    CODEC_ID_MSZH,
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    CODEC_ID_ZLIB,
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    CODEC_ID_QTRLE,
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    CODEC_ID_SNOW,
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    CODEC_ID_TSCC,
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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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/* 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.
337
     * - encoding: set by user.
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     * - decoding: set by lavc
339
     */
340
    int id;
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    /**
343
     * width and height in 1/16 pel
344
     * - encoding: set by user.
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     * - decoding: set by lavc
346
     */
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    int width;
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    int height;
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    /**
351
     * 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];
356
}AVPanScan;
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#define FF_COMMON_FRAME \
359
    /**\
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     * pointer to the picture planes.\
361
     * this might be different from the first allocated byte\
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     * - encoding: \
363
     * - decoding: \
364
     */\
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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\
369
     * this isnt used by lavc unless the default get/release_buffer() is used\
370
     * - encoding: \
371
     * - decoding: \
372
     */\
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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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     */\
379
    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)\
384
     * - 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)\
390
     * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
391
     * - encoding: MUST be set by user\
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     * - decoding: set by lavc\
393
     */\
394
    int64_t pts;\
395
\
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    /**\
397
     * picture number in bitstream order.\
398
     * - encoding: set by\
399
     * - decoding: set by lavc\
400
     */\
401
    int coded_picture_number;\
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    /**\
403
     * picture number in display order.\
404
     * - encoding: set by\
405
     * - decoding: set by lavc\
406
     */\
407
    int display_picture_number;\
408
\
409
    /**\
410
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
411
     * - encoding: set by lavc for coded_picture (and set by user for input)\
412
     * - decoding: set by lavc\
413
     */\
414
    int quality; \
415
\
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    /**\
417
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
418
     * set to INT_MAX if the buffer has not been used yet \
419
     * - encoding: unused\
420
     * - decoding: MUST be set by get_buffer()\
421
     */\
422
    int age;\
423
\
424
    /**\
425
     * is this picture used as reference\
426
     * - encoding: unused\
427
     * - decoding: set by lavc (before get_buffer() call))\
428
     */\
429
    int reference;\
430
\
431
    /**\
432
     * QP table\
433
     * - encoding: unused\
434
     * - decoding: set by lavc\
435
     */\
436
    int8_t *qscale_table;\
437
    /**\
438
     * QP store stride\
439
     * - encoding: unused\
440
     * - decoding: set by lavc\
441
     */\
442
    int qstride;\
443
\
444
    /**\
445
     * mbskip_table[mb]>=1 if MB didnt change\
446
     * stride= mb_width = (width+15)>>4\
447
     * - encoding: unused\
448
     * - decoding: set by lavc\
449
     */\
450
    uint8_t *mbskip_table;\
451
\
452
    /**\
453
     * Motion vector table\
454
     * - encoding: set by user\
455
     * - decoding: set by lavc\
456
     */\
457
    int16_t (*motion_val[2])[2];\
458
\
459
    /**\
460
     * Macroblock type table\
461
     * mb_type_base + mb_width + 2\
462
     * - encoding: set by user\
463
     * - decoding: set by lavc\
464
     */\
465
    uint32_t *mb_type;\
466
\
467
    /**\
468
     * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
469
     * - encoding: unused\
470
     * - decoding: set by lavc\
471
     */\
472
    uint8_t motion_subsample_log2;\
473
\
474
    /**\
475
     * for some private data of the user\
476
     * - encoding: unused\
477
     * - decoding: set by user\
478
     */\
479
    void *opaque;\
480
\
481
    /**\
482
     * error\
483
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
484
     * - decoding: unused\
485
     */\
486
    uint64_t error[4];\
487
\
488
    /**\
489
     * type of the buffer (to keep track of who has to dealloc data[*])\
490
     * - encoding: set by the one who allocs it\
491
     * - decoding: set by the one who allocs it\
492
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
493
     */\
494
    int type;\
495
    \
496
    /**\
497
     * when decoding, this signal how much the picture must be delayed.\
498
     * extra_delay = repeat_pict / (2*fps)\
499
     * - encoding: unused\
500
     * - decoding: set by lavc\
501
     */\
502
    int repeat_pict;\
503
    \
504
    /**\
505
     * \
506
     */\
507
    int qscale_type;\
508
    \
509
    /**\
510
     * The content of the picture is interlaced.\
511
     * - encoding: set by user\
512
     * - decoding: set by lavc (default 0)\
513
     */\
514
    int interlaced_frame;\
515
    \
516
    /**\
517
     * if the content is interlaced, is top field displayed first.\
518
     * - encoding: set by user\
519
     * - decoding: set by lavc\
520
     */\
521
    int top_field_first;\
522
    \
523
    /**\
524
     * Pan scan.\
525
     * - encoding: set by user\
526
     * - decoding: set by lavc\
527
     */\
528
    AVPanScan *pan_scan;\
529
    \
530
    /**\
531
     * tell user application that palette has changed from previous frame.\
532
     * - encoding: ??? (no palette-enabled encoder yet)\
533
     * - decoding: set by lavc (default 0)\
534
     */\
535
    int palette_has_changed;\
536
    \
537
    /**\
538
     * Codec suggestion on buffer type if != 0\
539
     * - encoding: unused\
540
     * - decoding: set by lavc (before get_buffer() call))\
541
     */\
542
    int buffer_hints;\
543
\
544
    /**\
545
     * DCT coeffitients\
546
     * - encoding: unused\
547
     * - decoding: set by lavc\
548
     */\
549
    short *dct_coeff;\
550
\
551
    /**\
552
     * Motion referece frame index\
553
     * - encoding: set by user\
554
     * - decoding: set by lavc\
555
     */\
556
    int8_t *ref_index[2];
557

    
558
#define FF_QSCALE_TYPE_MPEG1        0
559
#define FF_QSCALE_TYPE_MPEG2        1
560

    
561
#define FF_BUFFER_TYPE_INTERNAL 1
562
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
563
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
564
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
565

    
566

    
567
#define FF_I_TYPE 1 // Intra
568
#define FF_P_TYPE 2 // Predicted
569
#define FF_B_TYPE 3 // Bi-dir predicted
570
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
571
#define FF_SI_TYPE 5
572
#define FF_SP_TYPE 6
573

    
574
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
575
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
576
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
577
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
578

    
579
/**
580
 * Audio Video Frame.
581
 */
582
typedef struct AVFrame {
583
    FF_COMMON_FRAME
584
} AVFrame;
585

    
586
#define DEFAULT_FRAME_RATE_BASE 1001000
587

    
588
/**
589
 * Used by av_log
590
 */
591
typedef struct AVCLASS AVClass;
592
struct AVCLASS {
593
    const char* class_name;
594
    const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
595
                                        or AVFormatContext, which begin with an AVClass.
596
                                        Needed because av_log is in libavcodec and has no visibility
597
                                        of AVIn/OutputFormat */
598
};
599

    
600
/**
601
 * main external api structure.
602
 */
603
typedef struct AVCodecContext {
604
    /**
605
     * Info on struct for av_log
606
     * - set by avcodec_alloc_context
607
     */
608
    AVClass *av_class;
609
    /**
610
     * the average bitrate.
611
     * - encoding: set by user. unused for constant quantizer encoding
612
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
613
     */
614
    int bit_rate;
615

    
616
    /**
617
     * number of bits the bitstream is allowed to diverge from the reference.
618
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
619
     * - encoding: set by user. unused for constant quantizer encoding
620
     * - decoding: unused
621
     */
622
    int bit_rate_tolerance; 
623

    
624
    /**
625
     * CODEC_FLAG_*.
626
     * - encoding: set by user.
627
     * - decoding: set by user.
628
     */
629
    int flags;
630

    
631
    /**
632
     * some codecs needs additionnal format info. It is stored here
633
     * - encoding: set by user. 
634
     * - decoding: set by lavc. (FIXME is this ok?)
635
     */
636
    int sub_id;
637

    
638
    /**
639
     * motion estimation algorithm used for video coding.
640
     * - encoding: MUST be set by user.
641
     * - decoding: unused
642
     */
643
    int me_method;
644

    
645
    /**
646
     * some codecs need / can use extra-data like huffman tables.
647
     * mjpeg: huffman tables
648
     * rv10: additional flags
649
     * mpeg4: global headers (they can be in the bitstream or here)
650
     * - encoding: set/allocated/freed by lavc.
651
     * - decoding: set/allocated/freed by user.
652
     */
653
    void *extradata;
654
    int extradata_size;
655
    
656
    /* video only */
657
    /**
658
     * frames per sec multiplied by frame_rate_base.
659
     * for variable fps this is the precission, so if the timestamps 
660
     * can be specified in msec precssion then this is 1000*frame_rate_base
661
     * - encoding: MUST be set by user
662
     * - decoding: set by lavc. 0 or the frame_rate if available
663
     */
664
    int frame_rate;
665
    
666
    /**
667
     * width / height.
668
     * - encoding: MUST be set by user. 
669
     * - decoding: set by user if known, codec should override / dynamically change if needed
670
     */
671
    int width, height;
672
    
673
#define FF_ASPECT_EXTENDED 15
674

    
675
    /**
676
     * the number of pictures in a group of pitures, or 0 for intra_only.
677
     * - encoding: set by user.
678
     * - decoding: unused
679
     */
680
    int gop_size;
681

    
682
    /**
683
     * pixel format, see PIX_FMT_xxx.
684
     * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
685
     *                    conversion is in order. This only works for
686
     *                    codecs with one supported pix_fmt, we should
687
     *                    do something for a generic case as well.
688
     * - decoding: set by lavc.
689
     */
690
    enum PixelFormat pix_fmt;
691
 
692
    /**
693
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
694
     * has to read frames at native frame rate.
695
     * - encoding: set by user.
696
     * - decoding: unused.
697
     */
698
    int rate_emu;
699
       
700
    /**
701
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
702
     * decoder to draw an horizontal band. It improve cache usage. Not
703
     * all codecs can do that. You must check the codec capabilities
704
     * before
705
     * - encoding: unused
706
     * - decoding: set by user.
707
     * @param height the height of the slice
708
     * @param y the y position of the slice
709
     * @param type 1->top field, 2->bottom field, 3->frame
710
     * @param offset offset into the AVFrame.data from which the slice should be read
711
     */
712
    void (*draw_horiz_band)(struct AVCodecContext *s,
713
                            const AVFrame *src, int offset[4],
714
                            int y, int type, int height);
715

    
716
    /* audio only */
717
    int sample_rate; ///< samples per sec 
718
    int channels;
719
    int sample_fmt;  ///< sample format, currenly unused 
720

    
721
    /* the following data should not be initialized */
722
    int frame_size;     ///< in samples, initialized when calling 'init' 
723
    int frame_number;   ///< audio or video frame number 
724
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
725
    
726
    /**
727
     * number of frames the decoded output will be delayed relative to 
728
     * the encoded input.
729
     * - encoding: set by lavc.
730
     * - decoding: unused
731
     */
732
    int delay;
733
    
734
    /* - encoding parameters */
735
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
736
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
737
    
738
    /**
739
     * minimum quantizer.
740
     * - encoding: set by user.
741
     * - decoding: unused
742
     */
743
    int qmin;
744

    
745
    /**
746
     * maximum quantizer.
747
     * - encoding: set by user.
748
     * - decoding: unused
749
     */
750
    int qmax;
751

    
752
    /**
753
     * maximum quantizer difference etween frames.
754
     * - encoding: set by user.
755
     * - decoding: unused
756
     */
757
    int max_qdiff;
758

    
759
    /**
760
     * maximum number of b frames between non b frames.
761
     * note: the output will be delayed by max_b_frames+1 relative to the input
762
     * - encoding: set by user.
763
     * - decoding: unused
764
     */
765
    int max_b_frames;
766

    
767
    /**
768
     * qscale factor between ip and b frames.
769
     * - encoding: set by user.
770
     * - decoding: unused
771
     */
772
    float b_quant_factor;
773
    
774
    /** obsolete FIXME remove */
775
    int rc_strategy;
776
    int b_frame_strategy;
777

    
778
    /**
779
     * hurry up amount.
780
     * - encoding: unused
781
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
782
     */
783
    int hurry_up;
784
    
785
    struct AVCodec *codec;
786
    
787
    void *priv_data;
788

    
789
    /* unused, FIXME remove*/
790
    int rtp_mode;
791
    
792
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
793
                            /* do it's best to deliver a chunk with size    */
794
                            /* below rtp_payload_size, the chunk will start */
795
                            /* with a start code on some codecs like H.263  */
796
                            /* This doesn't take account of any particular  */
797
                            /* headers inside the transmited RTP payload    */
798

    
799
    
800
    /* The RTP callcack: This function is called  */
801
    /* every time the encoder as a packet to send */
802
    /* Depends on the encoder if the data starts  */
803
    /* with a Start Code (it should) H.263 does   */
804
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number); 
805

    
806
    /* statistics, used for 2-pass encoding */
807
    int mv_bits;
808
    int header_bits;
809
    int i_tex_bits;
810
    int p_tex_bits;
811
    int i_count;
812
    int p_count;
813
    int skip_count;
814
    int misc_bits;
815
    
816
    /**
817
     * number of bits used for the previously encoded frame.
818
     * - encoding: set by lavc
819
     * - decoding: unused
820
     */
821
    int frame_bits;
822

    
823
    /**
824
     * private data of the user, can be used to carry app specific stuff.
825
     * - encoding: set by user
826
     * - decoding: set by user
827
     */
828
    void *opaque;
829

    
830
    char codec_name[32];
831
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
832
    enum CodecID codec_id; /* see CODEC_ID_xxx */
833
    
834
    /**
835
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
836
     * this is used to workaround some encoder bugs
837
     * - encoding: set by user, if not then the default based on codec_id will be used
838
     * - decoding: set by user, will be converted to upper case by lavc during init
839
     */
840
    unsigned int codec_tag;
841
    
842
    /**
843
     * workaround bugs in encoders which sometimes cannot be detected automatically.
844
     * - encoding: unused
845
     * - decoding: set by user
846
     */
847
    int workaround_bugs;
848
#define FF_BUG_AUTODETECT       1  ///< autodetection
849
#define FF_BUG_OLD_MSMPEG4      2
850
#define FF_BUG_XVID_ILACE       4
851
#define FF_BUG_UMP4             8
852
#define FF_BUG_NO_PADDING       16
853
#define FF_BUG_AMV              32
854
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
855
#define FF_BUG_QPEL_CHROMA      64
856
#define FF_BUG_STD_QPEL         128
857
#define FF_BUG_QPEL_CHROMA2     256
858
#define FF_BUG_DIRECT_BLOCKSIZE 512
859
#define FF_BUG_EDGE             1024
860
#define FF_BUG_HPEL_CHROMA      2048
861
#define FF_BUG_DC_CLIP          4096
862
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
863
        
864
    /**
865
     * luma single coeff elimination threshold.
866
     * - encoding: set by user
867
     * - decoding: unused
868
     */
869
    int luma_elim_threshold;
870
    
871
    /**
872
     * chroma single coeff elimination threshold.
873
     * - encoding: set by user
874
     * - decoding: unused
875
     */
876
    int chroma_elim_threshold;
877
    
878
    /**
879
     * strictly follow the std (MPEG4, ...).
880
     * - encoding: set by user
881
     * - decoding: unused
882
     */
883
    int strict_std_compliance;
884
    
885
    /**
886
     * qscale offset between ip and b frames.
887
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
888
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
889
     * - encoding: set by user.
890
     * - decoding: unused
891
     */
892
    float b_quant_offset;
893
    
894
    /**
895
     * error resilience higher values will detect more errors but may missdetect
896
     * some more or less valid parts as errors.
897
     * - encoding: unused
898
     * - decoding: set by user
899
     */
900
    int error_resilience;
901
#define FF_ER_CAREFULL        1
902
#define FF_ER_COMPLIANT       2
903
#define FF_ER_AGGRESSIVE      3
904
#define FF_ER_VERY_AGGRESSIVE 4
905
    
906
    /**
907
     * called at the beginning of each frame to get a buffer for it.
908
     * if pic.reference is set then the frame will be read later by lavc
909
     * avcodec_align_dimensions() should be used to find the required width and
910
     * height, as they normally need to be rounded up to the next multiple of 16
911
     * - encoding: unused
912
     * - decoding: set by lavc, user can override
913
     */
914
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
915
    
916
    /**
917
     * called to release buffers which where allocated with get_buffer.
918
     * a released buffer can be reused in get_buffer()
919
     * pic.data[*] must be set to NULL
920
     * - encoding: unused
921
     * - decoding: set by lavc, user can override
922
     */
923
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
924

    
925
    /**
926
     * if 1 the stream has a 1 frame delay during decoding.
927
     * - encoding: set by lavc
928
     * - decoding: set by lavc
929
     */
930
    int has_b_frames;
931
    
932
    int block_align; ///< used by some WAV based audio codecs
933
    
934
    int parse_only; /* - decoding only: if true, only parsing is done
935
                       (function avcodec_parse_frame()). The frame
936
                       data is returned. Only MPEG codecs support this now. */
937
    
938
    /**
939
     * 0-> h263 quant 1-> mpeg quant.
940
     * - encoding: set by user.
941
     * - decoding: unused
942
     */
943
    int mpeg_quant;
944
    
945
    /**
946
     * pass1 encoding statistics output buffer.
947
     * - encoding: set by lavc
948
     * - decoding: unused
949
     */
950
    char *stats_out;
951
    
952
    /**
953
     * pass2 encoding statistics input buffer.
954
     * concatenated stuff from stats_out of pass1 should be placed here
955
     * - encoding: allocated/set/freed by user
956
     * - decoding: unused
957
     */
958
    char *stats_in;
959
    
960
    /**
961
     * ratecontrol qmin qmax limiting method.
962
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
963
     * - encoding: set by user.
964
     * - decoding: unused
965
     */
966
    float rc_qsquish;
967

    
968
    float rc_qmod_amp;
969
    int rc_qmod_freq;
970
    
971
    /**
972
     * ratecontrol override, see RcOverride.
973
     * - encoding: allocated/set/freed by user.
974
     * - decoding: unused
975
     */
976
    RcOverride *rc_override;
977
    int rc_override_count;
978
    
979
    /**
980
     * rate control equation.
981
     * - encoding: set by user
982
     * - decoding: unused
983
     */
984
    char *rc_eq;
985
    
986
    /**
987
     * maximum bitrate.
988
     * - encoding: set by user.
989
     * - decoding: unused
990
     */
991
    int rc_max_rate;
992
    
993
    /**
994
     * minimum bitrate.
995
     * - encoding: set by user.
996
     * - decoding: unused
997
     */
998
    int rc_min_rate;
999
    
1000
    /**
1001
     * decoder bitstream buffer size.
1002
     * - encoding: set by user.
1003
     * - decoding: unused
1004
     */
1005
    int rc_buffer_size;
1006
    float rc_buffer_aggressivity;
1007

    
1008
    /**
1009
     * qscale factor between p and i frames.
1010
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1011
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1012
     * - encoding: set by user.
1013
     * - decoding: unused
1014
     */
1015
    float i_quant_factor;
1016
    
1017
    /**
1018
     * qscale offset between p and i frames.
1019
     * - encoding: set by user.
1020
     * - decoding: unused
1021
     */
1022
    float i_quant_offset;
1023
    
1024
    /**
1025
     * initial complexity for pass1 ratecontrol.
1026
     * - encoding: set by user.
1027
     * - decoding: unused
1028
     */
1029
    float rc_initial_cplx;
1030

    
1031
    /**
1032
     * dct algorithm, see FF_DCT_* below.
1033
     * - encoding: set by user
1034
     * - decoding: unused
1035
     */
1036
    int dct_algo;
1037
#define FF_DCT_AUTO    0
1038
#define FF_DCT_FASTINT 1
1039
#define FF_DCT_INT     2
1040
#define FF_DCT_MMX     3
1041
#define FF_DCT_MLIB    4
1042
#define FF_DCT_ALTIVEC 5
1043
#define FF_DCT_FAAN    6
1044
    
1045
    /**
1046
     * luminance masking (0-> disabled).
1047
     * - encoding: set by user
1048
     * - decoding: unused
1049
     */
1050
    float lumi_masking;
1051
    
1052
    /**
1053
     * temporary complexity masking (0-> disabled).
1054
     * - encoding: set by user
1055
     * - decoding: unused
1056
     */
1057
    float temporal_cplx_masking;
1058
    
1059
    /**
1060
     * spatial complexity masking (0-> disabled).
1061
     * - encoding: set by user
1062
     * - decoding: unused
1063
     */
1064
    float spatial_cplx_masking;
1065
    
1066
    /**
1067
     * p block masking (0-> disabled).
1068
     * - encoding: set by user
1069
     * - decoding: unused
1070
     */
1071
    float p_masking;
1072

    
1073
    /**
1074
     * darkness masking (0-> disabled).
1075
     * - encoding: set by user
1076
     * - decoding: unused
1077
     */
1078
    float dark_masking;
1079
    
1080
    
1081
    /* for binary compatibility */
1082
    int unused;
1083
    
1084
    /**
1085
     * idct algorithm, see FF_IDCT_* below.
1086
     * - encoding: set by user
1087
     * - decoding: set by user
1088
     */
1089
    int idct_algo;
1090
#define FF_IDCT_AUTO         0
1091
#define FF_IDCT_INT          1
1092
#define FF_IDCT_SIMPLE       2
1093
#define FF_IDCT_SIMPLEMMX    3
1094
#define FF_IDCT_LIBMPEG2MMX  4
1095
#define FF_IDCT_PS2          5
1096
#define FF_IDCT_MLIB         6
1097
#define FF_IDCT_ARM          7
1098
#define FF_IDCT_ALTIVEC      8
1099
#define FF_IDCT_SH4          9
1100
#define FF_IDCT_SIMPLEARM    10
1101

    
1102
    /**
1103
     * slice count.
1104
     * - encoding: set by lavc
1105
     * - decoding: set by user (or 0)
1106
     */
1107
    int slice_count;
1108
    /**
1109
     * slice offsets in the frame in bytes.
1110
     * - encoding: set/allocated by lavc
1111
     * - decoding: set/allocated by user (or NULL)
1112
     */
1113
    int *slice_offset;
1114

    
1115
    /**
1116
     * error concealment flags.
1117
     * - encoding: unused
1118
     * - decoding: set by user
1119
     */
1120
    int error_concealment;
1121
#define FF_EC_GUESS_MVS   1
1122
#define FF_EC_DEBLOCK     2
1123

    
1124
    /**
1125
     * dsp_mask could be add used to disable unwanted CPU features
1126
     * CPU features (i.e. MMX, SSE. ...)
1127
     *
1128
     * with FORCE flag you may instead enable given CPU features
1129
     * (Dangerous: usable in case of misdetection, improper usage however will
1130
     * result into program crash)
1131
     */
1132
    unsigned dsp_mask;
1133
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1134
    /* lower 16 bits - CPU features */
1135
#ifdef HAVE_MMX
1136
#define FF_MM_MMX        0x0001 /* standard MMX */
1137
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1138
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1139
#define FF_MM_SSE        0x0008 /* SSE functions */
1140
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1141
#endif /* HAVE_MMX */
1142

    
1143
    /**
1144
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1145
     * - encoding: set by lavc
1146
     * - decoding: set by user
1147
     */
1148
     int bits_per_sample;
1149
    
1150
    /**
1151
     * prediction method (needed for huffyuv).
1152
     * - encoding: set by user
1153
     * - decoding: unused
1154
     */
1155
     int prediction_method;
1156
#define FF_PRED_LEFT   0
1157
#define FF_PRED_PLANE  1
1158
#define FF_PRED_MEDIAN 2
1159
    
1160
    /**
1161
     * sample aspect ratio (0 if unknown).
1162
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1163
     * - encoding: set by user.
1164
     * - decoding: set by lavc.
1165
     */
1166
    AVRational sample_aspect_ratio;
1167

    
1168
    /**
1169
     * the picture in the bitstream.
1170
     * - encoding: set by lavc
1171
     * - decoding: set by lavc
1172
     */
1173
    AVFrame *coded_frame;
1174

    
1175
    /**
1176
     * debug.
1177
     * - encoding: set by user.
1178
     * - decoding: set by user.
1179
     */
1180
    int debug;
1181
#define FF_DEBUG_PICT_INFO 1
1182
#define FF_DEBUG_RC        2
1183
#define FF_DEBUG_BITSTREAM 4
1184
#define FF_DEBUG_MB_TYPE   8
1185
#define FF_DEBUG_QP        16
1186
#define FF_DEBUG_MV        32
1187
#define FF_DEBUG_DCT_COEFF 0x00000040
1188
#define FF_DEBUG_SKIP      0x00000080
1189
#define FF_DEBUG_STARTCODE 0x00000100
1190
#define FF_DEBUG_PTS       0x00000200
1191
#define FF_DEBUG_ER        0x00000400
1192
#define FF_DEBUG_MMCO      0x00000800
1193
#define FF_DEBUG_BUGS      0x00001000
1194
#define FF_DEBUG_VIS_QP    0x00002000
1195
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1196
    
1197
    /**
1198
     * debug.
1199
     * - encoding: set by user.
1200
     * - decoding: set by user.
1201
     */
1202
    int debug_mv;
1203
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1204
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1205
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1206

    
1207
    /**
1208
     * error.
1209
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1210
     * - decoding: unused
1211
     */
1212
    uint64_t error[4];
1213
    
1214
    /**
1215
     * minimum MB quantizer.
1216
     * - encoding: set by user.
1217
     * - decoding: unused
1218
     */
1219
    int mb_qmin;
1220

    
1221
    /**
1222
     * maximum MB quantizer.
1223
     * - encoding: set by user.
1224
     * - decoding: unused
1225
     */
1226
    int mb_qmax;
1227
    
1228
    /**
1229
     * motion estimation compare function.
1230
     * - encoding: set by user.
1231
     * - decoding: unused
1232
     */
1233
    int me_cmp;
1234
    /**
1235
     * subpixel motion estimation compare function.
1236
     * - encoding: set by user.
1237
     * - decoding: unused
1238
     */
1239
    int me_sub_cmp;
1240
    /**
1241
     * macroblock compare function (not supported yet).
1242
     * - encoding: set by user.
1243
     * - decoding: unused
1244
     */
1245
    int mb_cmp;
1246
    /**
1247
     * interlaced dct compare function
1248
     * - encoding: set by user.
1249
     * - decoding: unused
1250
     */
1251
    int ildct_cmp;
1252
#define FF_CMP_SAD  0
1253
#define FF_CMP_SSE  1
1254
#define FF_CMP_SATD 2
1255
#define FF_CMP_DCT  3
1256
#define FF_CMP_PSNR 4
1257
#define FF_CMP_BIT  5
1258
#define FF_CMP_RD   6
1259
#define FF_CMP_ZERO 7
1260
#define FF_CMP_VSAD 8
1261
#define FF_CMP_VSSE 9
1262
#define FF_CMP_NSSE 10
1263
#define FF_CMP_CHROMA 256
1264
    
1265
    /**
1266
     * ME diamond size & shape.
1267
     * - encoding: set by user.
1268
     * - decoding: unused
1269
     */
1270
    int dia_size;
1271

    
1272
    /**
1273
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1274
     * - encoding: set by user.
1275
     * - decoding: unused
1276
     */
1277
    int last_predictor_count;
1278

    
1279
    /**
1280
     * pre pass for motion estimation.
1281
     * - encoding: set by user.
1282
     * - decoding: unused
1283
     */
1284
    int pre_me;
1285

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

    
1293
    /**
1294
     * ME pre pass diamond size & shape.
1295
     * - encoding: set by user.
1296
     * - decoding: unused
1297
     */
1298
    int pre_dia_size;
1299

    
1300
    /**
1301
     * subpel ME quality.
1302
     * - encoding: set by user.
1303
     * - decoding: unused
1304
     */
1305
    int me_subpel_quality;
1306

    
1307
    /**
1308
     * callback to negotiate the pixelFormat.
1309
     * @param fmt is the list of formats which are supported by the codec,
1310
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1311
     * the first is allways the native one
1312
     * @return the choosen format
1313
     * - encoding: unused
1314
     * - decoding: set by user, if not set then the native format will always be choosen
1315
     */
1316
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1317

    
1318
    /**
1319
     * DTG active format information (additionnal aspect ratio
1320
     * information only used in DVB MPEG2 transport streams). 0 if
1321
     * not set.
1322
     * 
1323
     * - encoding: unused.
1324
     * - decoding: set by decoder 
1325
     */
1326
    int dtg_active_format;
1327
#define FF_DTG_AFD_SAME         8
1328
#define FF_DTG_AFD_4_3          9
1329
#define FF_DTG_AFD_16_9         10
1330
#define FF_DTG_AFD_14_9         11
1331
#define FF_DTG_AFD_4_3_SP_14_9  13
1332
#define FF_DTG_AFD_16_9_SP_14_9 14
1333
#define FF_DTG_AFD_SP_4_3       15
1334

    
1335
    /**
1336
     * Maximum motion estimation search range in subpel units.
1337
     * if 0 then no limit
1338
     * 
1339
     * - encoding: set by user.
1340
     * - decoding: unused.
1341
     */
1342
    int me_range;
1343

    
1344
    /**
1345
     * frame_rate_base.
1346
     * for variable fps this is 1
1347
     * - encoding: set by user.
1348
     * - decoding: set by lavc.
1349
     * @todo move this after frame_rate
1350
     */
1351

    
1352
    int frame_rate_base;
1353
    /**
1354
     * intra quantizer bias.
1355
     * - encoding: set by user.
1356
     * - decoding: unused
1357
     */
1358
    int intra_quant_bias;
1359
#define FF_DEFAULT_QUANT_BIAS 999999
1360
    
1361
    /**
1362
     * inter quantizer bias.
1363
     * - encoding: set by user.
1364
     * - decoding: unused
1365
     */
1366
    int inter_quant_bias;
1367

    
1368
    /**
1369
     * color table ID.
1370
     * - encoding: unused.
1371
     * - decoding: which clrtable should be used for 8bit RGB images
1372
     *             table have to be stored somewhere FIXME
1373
     */
1374
    int color_table_id;
1375
    
1376
    /**
1377
     * internal_buffer count. 
1378
     * Dont touch, used by lavc default_get_buffer()
1379
     */
1380
    int internal_buffer_count;
1381
    
1382
    /**
1383
     * internal_buffers. 
1384
     * Dont touch, used by lavc default_get_buffer()
1385
     */
1386
    void *internal_buffer;
1387

    
1388
#define FF_LAMBDA_SHIFT 7
1389
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1390
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1391
#define FF_LAMBDA_MAX (256*128-1)
1392

    
1393
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1394
    /**
1395
     * global quality for codecs which cannot change it per frame.
1396
     * this should be proportional to MPEG1/2/4 qscale.
1397
     * - encoding: set by user.
1398
     * - decoding: unused
1399
     */
1400
    int global_quality;
1401
    
1402
#define FF_CODER_TYPE_VLC   0
1403
#define FF_CODER_TYPE_AC    1
1404
    /**
1405
     * coder type
1406
     * - encoding: set by user.
1407
     * - decoding: unused
1408
     */
1409
    int coder_type;
1410

    
1411
    /**
1412
     * context model
1413
     * - encoding: set by user.
1414
     * - decoding: unused
1415
     */
1416
    int context_model;
1417
    
1418
    /**
1419
     * slice flags
1420
     * - encoding: unused
1421
     * - decoding: set by user.
1422
     */
1423
    int slice_flags;
1424
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1425
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1426
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1427

    
1428
    /**
1429
     * XVideo Motion Acceleration
1430
     * - encoding: forbidden
1431
     * - decoding: set by decoder
1432
     */
1433
    int xvmc_acceleration;
1434
    
1435
    /**
1436
     * macroblock decision mode
1437
     * - encoding: set by user.
1438
     * - decoding: unused
1439
     */
1440
    int mb_decision;
1441
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1442
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1443
#define FF_MB_DECISION_RD     2        ///< rate distoration
1444

    
1445
    /**
1446
     * custom intra quantization matrix
1447
     * - encoding: set by user, can be NULL
1448
     * - decoding: set by lavc
1449
     */
1450
    uint16_t *intra_matrix;
1451

    
1452
    /**
1453
     * custom inter quantization matrix
1454
     * - encoding: set by user, can be NULL
1455
     * - decoding: set by lavc
1456
     */
1457
    uint16_t *inter_matrix;
1458
    
1459
    /**
1460
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1461
     * this is used to workaround some encoder bugs
1462
     * - encoding: unused
1463
     * - decoding: set by user, will be converted to upper case by lavc during init
1464
     */
1465
    unsigned int stream_codec_tag;
1466

    
1467
    /**
1468
     * scene change detection threshold.
1469
     * 0 is default, larger means fewer detected scene changes
1470
     * - encoding: set by user.
1471
     * - decoding: unused
1472
     */
1473
    int scenechange_threshold;
1474

    
1475
    /**
1476
     * minimum lagrange multipler
1477
     * - encoding: set by user.
1478
     * - decoding: unused
1479
     */
1480
    int lmin;
1481

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

    
1489
    /**
1490
     * Palette control structure
1491
     * - encoding: ??? (no palette-enabled encoder yet)
1492
     * - decoding: set by user.
1493
     */
1494
    struct AVPaletteControl *palctrl;
1495

    
1496
    /**
1497
     * noise reduction strength
1498
     * - encoding: set by user.
1499
     * - decoding: unused
1500
     */
1501
    int noise_reduction;
1502
    
1503
    /**
1504
     * called at the beginning of a frame to get cr buffer for it.
1505
     * buffer type (size, hints) must be the same. lavc won't check it.
1506
     * lavc will pass previous buffer in pic, function should return
1507
     * same buffer or new buffer with old frame "painted" into it.
1508
     * if pic.data[0] == NULL must behave like get_buffer().
1509
     * - encoding: unused
1510
     * - decoding: set by lavc, user can override
1511
     */
1512
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1513

    
1514
    /**
1515
     * number of bits which should be loaded into the rc buffer before decoding starts
1516
     * - encoding: set by user.
1517
     * - decoding: unused
1518
     */
1519
    int rc_initial_buffer_occupancy;
1520

    
1521
    /**
1522
     *
1523
     * - encoding: set by user.
1524
     * - decoding: unused
1525
     */
1526
    int inter_threshold;
1527

    
1528
    /**
1529
     * CODEC_FLAG2_*.
1530
     * - encoding: set by user.
1531
     * - decoding: set by user.
1532
     */
1533
    int flags2;
1534

    
1535
    /**
1536
     * simulates errors in the bitstream to test error concealment.
1537
     * - encoding: set by user.
1538
     * - decoding: unused.
1539
     */
1540
    int error_rate;
1541
    
1542
    /**
1543
     * MP3 antialias algorithm, see FF_AA_* below.
1544
     * - encoding: unused
1545
     * - decoding: set by user
1546
     */
1547
    int antialias_algo;
1548
#define FF_AA_AUTO    0
1549
#define FF_AA_FASTINT 1 //not implemented yet
1550
#define FF_AA_INT     2
1551
#define FF_AA_FLOAT   3
1552
    /**
1553
     * Quantizer noise shaping.
1554
     * - encoding: set by user
1555
     * - decoding: unused
1556
     */
1557
    int quantizer_noise_shaping;
1558

    
1559
    /**
1560
     * Thread count.
1561
     * is used to decide how many independant tasks should be passed to execute()
1562
     * - encoding: set by user
1563
     * - decoding: set by user
1564
     */
1565
    int thread_count;
1566
    
1567
    /**
1568
     * the codec may call this to execute several independant things. it will return only after
1569
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1570
     * default implementation will execute the parts serially
1571
     * @param count the number of things to execute
1572
     * - encoding: set by lavc, user can override
1573
     * - decoding: set by lavc, user can override
1574
     */
1575
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1576
    
1577
    /**
1578
     * Thread opaque.
1579
     * can be used by execute() to store some per AVCodecContext stuff.
1580
     * - encoding: set by execute()
1581
     * - decoding: set by execute()
1582
     */
1583
    void *thread_opaque;
1584

    
1585
    /**
1586
     * Motion estimation threshold. under which no motion estimation is 
1587
     * performed, but instead the user specified motion vectors are used
1588
     * 
1589
     * - encoding: set by user
1590
     * - decoding: unused
1591
     */
1592
     int me_threshold;
1593

    
1594
    /**
1595
     * Macroblock threshold. under which the user specified macroblock types will be used
1596
     * - encoding: set by user
1597
     * - decoding: unused
1598
     */
1599
     int mb_threshold;
1600

    
1601
    /**
1602
     * precision of the intra dc coefficient - 8.
1603
     * - encoding: set by user
1604
     * - decoding: unused
1605
     */
1606
     int intra_dc_precision;
1607

    
1608
    /**
1609
     * noise vs. sse weight for the nsse comparsion function.
1610
     * - encoding: set by user
1611
     * - decoding: unused
1612
     */
1613
     int nsse_weight;
1614

    
1615
    /**
1616
     * number of macroblock rows at the top which are skiped.
1617
     * - encoding: unused
1618
     * - decoding: set by user
1619
     */
1620
     int skip_top;
1621

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

    
1629
    /**
1630
     * profile
1631
     * - encoding: set by user
1632
     * - decoding: set by lavc
1633
     */
1634
     int profile;
1635
#define FF_PROFILE_UNKNOWN -99
1636

    
1637
    /**
1638
     * level
1639
     * - encoding: set by user
1640
     * - decoding: set by lavc
1641
     */
1642
     int level;
1643
#define FF_LEVEL_UNKNOWN -99
1644
} AVCodecContext;
1645

    
1646

    
1647
/**
1648
 * AVOption.
1649
 */
1650
typedef struct AVOption {
1651
    /** options' name */
1652
    const char *name; /* if name is NULL, it indicates a link to next */
1653
    /** short English text help or const struct AVOption* subpointer */
1654
    const char *help; //        const struct AVOption* sub;
1655
    /** offset to context structure where the parsed value should be stored */
1656
    int offset;
1657
    /** options' type */
1658
    int type;
1659
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1660
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1661
#define FF_OPT_TYPE_INT 3       ///< integer
1662
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1663
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1664
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1665
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1666
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1667
    /** min value  (min == max   ->  no limits) */
1668
    double min;
1669
    /** maximum value for double/int */
1670
    double max;
1671
    /** default boo [0,1]l/double/int value */
1672
    double defval;
1673
    /**
1674
     * default string value (with optional semicolon delimited extra option-list
1675
     * i.e.   option1;option2;option3
1676
     * defval might select other then first argument as default
1677
     */
1678
    const char *defstr;
1679
#define FF_OPT_MAX_DEPTH 10
1680
} AVOption;
1681

    
1682
/**
1683
 * Parse option(s) and sets fields in passed structure
1684
 * @param strct        structure where the parsed results will be written
1685
 * @param list  list with AVOptions
1686
 * @param opts        string with options for parsing
1687
 */
1688
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1689

    
1690

    
1691
/**
1692
 * AVCodec.
1693
 */
1694
typedef struct AVCodec {
1695
    const char *name;
1696
    enum CodecType type;
1697
    int id;
1698
    int priv_data_size;
1699
    int (*init)(AVCodecContext *);
1700
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1701
    int (*close)(AVCodecContext *);
1702
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1703
                  uint8_t *buf, int buf_size);
1704
    int capabilities;
1705
    const AVOption *options;
1706
    struct AVCodec *next;
1707
    void (*flush)(AVCodecContext *);
1708
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1709
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1710
} AVCodec;
1711

    
1712
/**
1713
 * four components are given, that's all.
1714
 * the last component is alpha
1715
 */
1716
typedef struct AVPicture {
1717
    uint8_t *data[4];
1718
    int linesize[4];       ///< number of bytes per line
1719
} AVPicture;
1720

    
1721
/**
1722
 * AVPaletteControl
1723
 * This structure defines a method for communicating palette changes
1724
 * between and demuxer and a decoder.
1725
 */
1726
#define AVPALETTE_SIZE 1024
1727
#define AVPALETTE_COUNT 256
1728
typedef struct AVPaletteControl {
1729

    
1730
    /* demuxer sets this to 1 to indicate the palette has changed;
1731
     * decoder resets to 0 */
1732
    int palette_changed;
1733

    
1734
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1735
     * the individual palette components should be on a 8-bit scale; if
1736
     * the palette data comes from a IBM VGA native format, the component
1737
     * data is probably 6 bits in size and needs to be scaled */
1738
    unsigned int palette[AVPALETTE_COUNT];
1739

    
1740
} AVPaletteControl;
1741

    
1742
extern AVCodec ac3_encoder;
1743
extern AVCodec mp2_encoder;
1744
extern AVCodec mp3lame_encoder;
1745
extern AVCodec oggvorbis_encoder;
1746
extern AVCodec faac_encoder;
1747
extern AVCodec xvid_encoder;
1748
extern AVCodec mpeg1video_encoder;
1749
extern AVCodec mpeg2video_encoder;
1750
extern AVCodec h263_encoder;
1751
extern AVCodec h263p_encoder;
1752
extern AVCodec flv_encoder;
1753
extern AVCodec rv10_encoder;
1754
extern AVCodec rv20_encoder;
1755
extern AVCodec dvvideo_encoder;
1756
extern AVCodec mjpeg_encoder;
1757
extern AVCodec ljpeg_encoder;
1758
extern AVCodec mpeg4_encoder;
1759
extern AVCodec msmpeg4v1_encoder;
1760
extern AVCodec msmpeg4v2_encoder;
1761
extern AVCodec msmpeg4v3_encoder;
1762
extern AVCodec wmv1_encoder;
1763
extern AVCodec wmv2_encoder;
1764
extern AVCodec huffyuv_encoder;
1765
extern AVCodec h264_encoder;
1766
extern AVCodec asv1_encoder;
1767
extern AVCodec asv2_encoder;
1768
extern AVCodec vcr1_encoder;
1769
extern AVCodec ffv1_encoder;
1770
extern AVCodec snow_encoder;
1771
extern AVCodec mdec_encoder;
1772
extern AVCodec zlib_encoder;
1773
extern AVCodec svq1_encoder;
1774

    
1775
extern AVCodec h263_decoder;
1776
extern AVCodec h261_decoder;
1777
extern AVCodec mpeg4_decoder;
1778
extern AVCodec msmpeg4v1_decoder;
1779
extern AVCodec msmpeg4v2_decoder;
1780
extern AVCodec msmpeg4v3_decoder;
1781
extern AVCodec wmv1_decoder;
1782
extern AVCodec wmv2_decoder;
1783
extern AVCodec mpeg1video_decoder;
1784
extern AVCodec mpeg2video_decoder;
1785
extern AVCodec mpegvideo_decoder;
1786
extern AVCodec mpeg_xvmc_decoder;
1787
extern AVCodec h263i_decoder;
1788
extern AVCodec flv_decoder;
1789
extern AVCodec rv10_decoder;
1790
extern AVCodec rv20_decoder;
1791
extern AVCodec svq1_decoder;
1792
extern AVCodec svq3_decoder;
1793
extern AVCodec dvvideo_decoder;
1794
extern AVCodec wmav1_decoder;
1795
extern AVCodec wmav2_decoder;
1796
extern AVCodec mjpeg_decoder;
1797
extern AVCodec mjpegb_decoder;
1798
extern AVCodec sp5x_decoder;
1799
extern AVCodec mp2_decoder;
1800
extern AVCodec mp3_decoder;
1801
extern AVCodec mace3_decoder;
1802
extern AVCodec mace6_decoder;
1803
extern AVCodec huffyuv_decoder;
1804
extern AVCodec oggvorbis_decoder;
1805
extern AVCodec cyuv_decoder;
1806
extern AVCodec h264_decoder;
1807
extern AVCodec indeo3_decoder;
1808
extern AVCodec vp3_decoder;
1809
extern AVCodec theora_decoder;
1810
extern AVCodec amr_nb_decoder;
1811
extern AVCodec amr_nb_encoder;
1812
extern AVCodec amr_wb_encoder;
1813
extern AVCodec amr_wb_decoder;
1814
extern AVCodec aac_decoder;
1815
extern AVCodec mpeg4aac_decoder;
1816
extern AVCodec asv1_decoder;
1817
extern AVCodec asv2_decoder;
1818
extern AVCodec vcr1_decoder;
1819
extern AVCodec cljr_decoder;
1820
extern AVCodec ffv1_decoder;
1821
extern AVCodec snow_decoder;
1822
extern AVCodec fourxm_decoder;
1823
extern AVCodec mdec_decoder;
1824
extern AVCodec roq_decoder;
1825
extern AVCodec interplay_video_decoder;
1826
extern AVCodec xan_wc3_decoder;
1827
extern AVCodec rpza_decoder;
1828
extern AVCodec cinepak_decoder;
1829
extern AVCodec msrle_decoder;
1830
extern AVCodec msvideo1_decoder;
1831
extern AVCodec vqa_decoder;
1832
extern AVCodec idcin_decoder;
1833
extern AVCodec eightbps_decoder;
1834
extern AVCodec smc_decoder;
1835
extern AVCodec flic_decoder;
1836
extern AVCodec vmdvideo_decoder;
1837
extern AVCodec vmdaudio_decoder;
1838
extern AVCodec truemotion1_decoder;
1839
extern AVCodec mszh_decoder;
1840
extern AVCodec zlib_decoder;
1841
extern AVCodec ra_144_decoder;
1842
extern AVCodec ra_288_decoder;
1843
extern AVCodec roq_dpcm_decoder;
1844
extern AVCodec interplay_dpcm_decoder;
1845
extern AVCodec xan_dpcm_decoder;
1846
extern AVCodec qtrle_decoder;
1847
extern AVCodec flac_decoder;
1848
extern AVCodec tscc_decoder;
1849

    
1850
/* pcm codecs */
1851
#define PCM_CODEC(id, name) \
1852
extern AVCodec name ## _decoder; \
1853
extern AVCodec name ## _encoder
1854

    
1855
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1856
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1857
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1858
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1859
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1860
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1861
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1862
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1863

    
1864
/* adpcm codecs */
1865

    
1866
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1867
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1868
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1869
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1870
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1871
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1872
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1873
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1874
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1875
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1876
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1877
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1878

    
1879
#undef PCM_CODEC
1880

    
1881
/* dummy raw video codec */
1882
extern AVCodec rawvideo_encoder;
1883
extern AVCodec rawvideo_decoder;
1884

    
1885
/* the following codecs use external GPL libs */
1886
extern AVCodec ac3_decoder;
1887
extern AVCodec dts_decoder;
1888

    
1889
/* resample.c */
1890

    
1891
struct ReSampleContext;
1892
struct AVResampleContext;
1893

    
1894
typedef struct ReSampleContext ReSampleContext;
1895

    
1896
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1897
                                     int output_rate, int input_rate);
1898
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1899
void audio_resample_close(ReSampleContext *s);
1900

    
1901
struct AVResampleContext *av_resample_init(int out_rate, int in_rate);
1902
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
1903
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
1904
void av_resample_close(struct AVResampleContext *c);
1905

    
1906
/* YUV420 format is assumed ! */
1907

    
1908
struct ImgReSampleContext;
1909

    
1910
typedef struct ImgReSampleContext ImgReSampleContext;
1911

    
1912
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1913
                                      int input_width, int input_height);
1914

    
1915
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1916
                                      int iwidth, int iheight,
1917
                                      int topBand, int bottomBand,
1918
                                      int leftBand, int rightBand,
1919
                                      int padtop, int padbottom,
1920
                                      int padleft, int padright);
1921

    
1922

    
1923
void img_resample(ImgReSampleContext *s, 
1924
                  AVPicture *output, const AVPicture *input);
1925

    
1926
void img_resample_close(ImgReSampleContext *s);
1927

    
1928
/**
1929
 * Allocate memory for a picture.  Call avpicture_free to free it.
1930
 *
1931
 * @param picture the picture to be filled in.
1932
 * @param pix_fmt the format of the picture.
1933
 * @param width the width of the picture.
1934
 * @param height the height of the picture.
1935
 * @return 0 if successful, -1 if not.
1936
 */
1937
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1938

    
1939
/* Free a picture previously allocated by avpicture_alloc. */
1940
void avpicture_free(AVPicture *picture);
1941

    
1942
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1943
                   int pix_fmt, int width, int height);
1944
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1945
                     unsigned char *dest, int dest_size);
1946
int avpicture_get_size(int pix_fmt, int width, int height);
1947
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1948
const char *avcodec_get_pix_fmt_name(int pix_fmt);
1949
enum PixelFormat avcodec_get_pix_fmt(const char* name);
1950

    
1951
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
1952
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
1953
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
1954
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
1955
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
1956
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1957

    
1958
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1959
                             int has_alpha);
1960
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1961
                              int has_alpha, int *loss_ptr);
1962

    
1963
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
1964
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
1965
int img_get_alpha_info(const AVPicture *src,
1966
                       int pix_fmt, int width, int height);
1967

    
1968
/* convert among pixel formats */
1969
int img_convert(AVPicture *dst, int dst_pix_fmt,
1970
                const AVPicture *src, int pix_fmt, 
1971
                int width, int height);
1972

    
1973
/* deinterlace a picture */
1974
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1975
                          int pix_fmt, int width, int height);
1976

    
1977
/* external high level API */
1978

    
1979
extern AVCodec *first_avcodec;
1980

    
1981
/* returns LIBAVCODEC_VERSION_INT constant */
1982
unsigned avcodec_version(void);
1983
/* returns LIBAVCODEC_BUILD constant */
1984
unsigned avcodec_build(void);
1985
void avcodec_init(void);
1986

    
1987
void register_avcodec(AVCodec *format);
1988
AVCodec *avcodec_find_encoder(enum CodecID id);
1989
AVCodec *avcodec_find_encoder_by_name(const char *name);
1990
AVCodec *avcodec_find_decoder(enum CodecID id);
1991
AVCodec *avcodec_find_decoder_by_name(const char *name);
1992
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1993

    
1994
void avcodec_get_context_defaults(AVCodecContext *s);
1995
AVCodecContext *avcodec_alloc_context(void);
1996
void avcodec_get_frame_defaults(AVFrame *pic);
1997
AVFrame *avcodec_alloc_frame(void);
1998

    
1999
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2000
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2001
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2002
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2003
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2004

    
2005
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2006
void avcodec_thread_free(AVCodecContext *s);
2007
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2008
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2009
//FIXME func typedef
2010

    
2011
/**
2012
 * opens / inits the AVCodecContext.
2013
 * not thread save!
2014
 */
2015
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2016

    
2017
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
2018
                         int *frame_size_ptr,
2019
                         uint8_t *buf, int buf_size);
2020
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
2021
                         int *got_picture_ptr,
2022
                         uint8_t *buf, int buf_size);
2023
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
2024
                        int *data_size_ptr,
2025
                        uint8_t *buf, int buf_size);
2026
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2027
                         const short *samples);
2028
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2029
                         const AVFrame *pict);
2030

    
2031
int avcodec_close(AVCodecContext *avctx);
2032

    
2033
void avcodec_register_all(void);
2034

    
2035
void avcodec_flush_buffers(AVCodecContext *avctx);
2036

    
2037
/* misc usefull functions */
2038

    
2039
/**
2040
 * returns a single letter to describe the picture type
2041
 */
2042
char av_get_pict_type_char(int pict_type);
2043

    
2044
/**
2045
 * reduce a fraction.
2046
 * this is usefull for framerate calculations
2047
 * @param max the maximum allowed for dst_nom & dst_den
2048
 * @return 1 if exact, 0 otherwise
2049
 */
2050
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2051

    
2052
/**
2053
 * rescale a 64bit integer.
2054
 * a simple a*b/c isnt possible as it can overflow
2055
 */
2056
int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2057

    
2058

    
2059
/**
2060
 * Interface for 0.5.0 version
2061
 *
2062
 * do not even think about it's usage for this moment
2063
 */
2064

    
2065
typedef struct {
2066
    /// compressed size used from given memory buffer
2067
    int size;
2068
    /// I/P/B frame type
2069
    int frame_type;
2070
} avc_enc_result_t;
2071

    
2072
/**
2073
 * Commands
2074
 * order can't be changed - once it was defined
2075
 */
2076
typedef enum {
2077
    // general commands
2078
    AVC_OPEN_BY_NAME = 0xACA000,
2079
    AVC_OPEN_BY_CODEC_ID,
2080
    AVC_OPEN_BY_FOURCC,
2081
    AVC_CLOSE,
2082

    
2083
    AVC_FLUSH,
2084
    // pin - struct { uint8_t* src, uint_t src_size }
2085
    // pout - struct { AVPicture* img, consumed_bytes,
2086
    AVC_DECODE,
2087
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
2088
    // pout - uint_t used_from_dest_size
2089
    AVC_ENCODE, 
2090

    
2091
    // query/get video commands
2092
    AVC_GET_VERSION = 0xACB000,
2093
    AVC_GET_WIDTH,
2094
    AVC_GET_HEIGHT,
2095
    AVC_GET_DELAY,
2096
    AVC_GET_QUANT_TABLE,
2097
    // ...
2098

    
2099
    // query/get audio commands
2100
    AVC_GET_FRAME_SIZE = 0xABC000,
2101

    
2102
    // maybe define some simple structure which
2103
    // might be passed to the user - but they can't
2104
    // contain any codec specific parts and these
2105
    // calls are usualy necessary only few times
2106

    
2107
    // set video commands
2108
    AVC_SET_WIDTH = 0xACD000,
2109
    AVC_SET_HEIGHT,
2110

    
2111
    // set video encoding commands
2112
    AVC_SET_FRAME_RATE = 0xACD800,
2113
    AVC_SET_QUALITY,
2114
    AVC_SET_HURRY_UP,
2115

    
2116
    // set audio commands
2117
    AVC_SET_SAMPLE_RATE = 0xACE000,
2118
    AVC_SET_CHANNELS,
2119

    
2120
} avc_cmd_t;
2121

    
2122
/**
2123
 * \param handle  allocated private structure by libavcodec
2124
 *                for initialization pass NULL - will be returned pout
2125
 *                user is supposed to know nothing about its structure
2126
 * \param cmd     type of operation to be performed
2127
 * \param pint    input parameter
2128
 * \param pout    output parameter
2129
 *
2130
 * \returns  command status - eventually for query command it might return
2131
 * integer resulting value
2132
 */
2133
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2134

    
2135
/* frame parsing */
2136
typedef struct AVCodecParserContext {
2137
    void *priv_data;
2138
    struct AVCodecParser *parser;
2139
    int64_t frame_offset; /* offset of the current frame */
2140
    int64_t cur_offset; /* current offset 
2141
                           (incremented by each av_parser_parse()) */
2142
    int64_t last_frame_offset; /* offset of the last frame */
2143
    /* video info */
2144
    int pict_type; /* XXX: put it back in AVCodecContext */
2145
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2146
    int64_t pts;     /* pts of the current frame */
2147
    int64_t dts;     /* dts of the current frame */
2148

    
2149
    /* private data */
2150
    int64_t last_pts;
2151
    int64_t last_dts;
2152
    int fetch_timestamp;
2153

    
2154
#define AV_PARSER_PTS_NB 4
2155
    int cur_frame_start_index;
2156
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2157
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2158
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2159
} AVCodecParserContext;
2160

    
2161
typedef struct AVCodecParser {
2162
    int codec_ids[3]; /* several codec IDs are permitted */
2163
    int priv_data_size;
2164
    int (*parser_init)(AVCodecParserContext *s);
2165
    int (*parser_parse)(AVCodecParserContext *s, 
2166
                        AVCodecContext *avctx,
2167
                        uint8_t **poutbuf, int *poutbuf_size, 
2168
                        const uint8_t *buf, int buf_size);
2169
    void (*parser_close)(AVCodecParserContext *s);
2170
    struct AVCodecParser *next;
2171
} AVCodecParser;
2172

    
2173
extern AVCodecParser *av_first_parser;
2174

    
2175
void av_register_codec_parser(AVCodecParser *parser);
2176
AVCodecParserContext *av_parser_init(int codec_id);
2177
int av_parser_parse(AVCodecParserContext *s, 
2178
                    AVCodecContext *avctx,
2179
                    uint8_t **poutbuf, int *poutbuf_size, 
2180
                    const uint8_t *buf, int buf_size,
2181
                    int64_t pts, int64_t dts);
2182
void av_parser_close(AVCodecParserContext *s);
2183

    
2184
extern AVCodecParser mpegvideo_parser;
2185
extern AVCodecParser mpeg4video_parser;
2186
extern AVCodecParser h261_parser;
2187
extern AVCodecParser h263_parser;
2188
extern AVCodecParser h264_parser;
2189
extern AVCodecParser mpegaudio_parser;
2190
extern AVCodecParser ac3_parser;
2191

    
2192
/* memory */
2193
void *av_malloc(unsigned int size);
2194
void *av_mallocz(unsigned int size);
2195
void *av_realloc(void *ptr, unsigned int size);
2196
void av_free(void *ptr);
2197
char *av_strdup(const char *s);
2198
void av_freep(void *ptr);
2199
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2200
/* for static data only */
2201
/* call av_free_static to release all staticaly allocated tables */
2202
void av_free_static(void);
2203
void *av_mallocz_static(unsigned int size);
2204

    
2205
/* add by bero : in adx.c */
2206
int is_adx(const unsigned char *buf,size_t bufsize);
2207

    
2208
void img_copy(AVPicture *dst, const AVPicture *src,
2209
              int pix_fmt, int width, int height);
2210

    
2211
/* av_log API */
2212

    
2213
#include <stdarg.h>
2214

    
2215
#define AV_LOG_QUIET -1
2216
#define AV_LOG_ERROR 0
2217
#define AV_LOG_INFO 1
2218
#define AV_LOG_DEBUG 2
2219

    
2220
#ifdef __GNUC__
2221
extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2222
#else
2223
extern void av_log(void*, int level, const char *fmt, ...);
2224
#endif
2225

    
2226
extern void av_vlog(void*, int level, const char *fmt, va_list);
2227
extern int av_log_get_level(void);
2228
extern void av_log_set_level(int);
2229
extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2230

    
2231
/* endian macros */
2232
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2233
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2234
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2235
                   (((uint8_t*)(x))[1] << 16) | \
2236
                   (((uint8_t*)(x))[2] << 8) | \
2237
                    ((uint8_t*)(x))[3])
2238
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2239
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2240
                   (((uint8_t*)(x))[2] << 16) | \
2241
                   (((uint8_t*)(x))[1] << 8) | \
2242
                    ((uint8_t*)(x))[0])
2243
#endif
2244

    
2245
#ifdef __cplusplus
2246
}
2247
#endif
2248

    
2249
#endif /* AVCODEC_H */