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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       4725
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#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
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#define LIBAVCODEC_VERSION     FFMPEG_VERSION
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#define AV_STRINGIFY(s)        AV_TOSTRING(s)
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#define AV_TOSTRING(s) #s
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#define LIBAVCODEC_IDENT        "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
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#define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
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#define AV_TIME_BASE 1000000
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enum CodecID {
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    CODEC_ID_NONE, 
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    CODEC_ID_MPEG1VIDEO,
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    CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
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    CODEC_ID_MPEG2VIDEO_XVMC,
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    CODEC_ID_H261,
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    CODEC_ID_H263,
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    CODEC_ID_RV10,
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    CODEC_ID_RV20,
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    CODEC_ID_MP2,
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    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
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    CODEC_ID_VORBIS,
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    CODEC_ID_AC3,
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    CODEC_ID_MJPEG,
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    CODEC_ID_MJPEGB,
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    CODEC_ID_LJPEG,
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    CODEC_ID_SP5X,
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    CODEC_ID_MPEG4,
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    CODEC_ID_RAWVIDEO,
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    CODEC_ID_MSMPEG4V1,
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    CODEC_ID_MSMPEG4V2,
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    CODEC_ID_MSMPEG4V3,
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    CODEC_ID_WMV1,
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    CODEC_ID_WMV2,
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    CODEC_ID_H263P,
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    CODEC_ID_H263I,
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    CODEC_ID_FLV1,
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    CODEC_ID_SVQ1,
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    CODEC_ID_SVQ3,
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    CODEC_ID_DVVIDEO,
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    CODEC_ID_DVAUDIO,
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    CODEC_ID_WMAV1,
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    CODEC_ID_WMAV2,
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    CODEC_ID_MACE3,
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    CODEC_ID_MACE6,
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    CODEC_ID_HUFFYUV,
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    CODEC_ID_CYUV,
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    CODEC_ID_H264,
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    CODEC_ID_INDEO3,
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    CODEC_ID_VP3,
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    CODEC_ID_THEORA,
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    CODEC_ID_AAC,
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    CODEC_ID_MPEG4AAC,
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    CODEC_ID_ASV1,
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    CODEC_ID_ASV2,
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    CODEC_ID_FFV1,
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    CODEC_ID_4XM,
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    CODEC_ID_VCR1,
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    CODEC_ID_CLJR,
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    CODEC_ID_MDEC,
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    CODEC_ID_ROQ,
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    CODEC_ID_INTERPLAY_VIDEO,
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    CODEC_ID_XAN_WC3,
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    CODEC_ID_XAN_WC4,
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    CODEC_ID_RPZA,
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    CODEC_ID_CINEPAK,
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    CODEC_ID_WS_VQA,
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    CODEC_ID_MSRLE,
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    CODEC_ID_MSVIDEO1,
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    CODEC_ID_IDCIN,
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    CODEC_ID_8BPS,
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    CODEC_ID_SMC,
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    CODEC_ID_FLIC,
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    CODEC_ID_TRUEMOTION1,
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    CODEC_ID_VMDVIDEO,
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    CODEC_ID_VMDAUDIO,
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    CODEC_ID_MSZH,
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    CODEC_ID_ZLIB,
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    CODEC_ID_SONIC,
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    CODEC_ID_SONIC_LS,
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    CODEC_ID_QTRLE,
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    CODEC_ID_SNOW,
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    CODEC_ID_TSCC,
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    CODEC_ID_ULTI,
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    CODEC_ID_QDRAW,
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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_SOL_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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enum AVRounding {
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    AV_ROUND_ZERO     = 0, ///< round toward zero
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    AV_ROUND_INF      = 1, ///< round away from zero
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    AV_ROUND_DOWN     = 2, ///< round toward -infinity
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    AV_ROUND_UP       = 3, ///< round toward +infinity
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    AV_ROUND_NEAR_INF = 5, ///< round to nearest and halfway cases away from zero
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};
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typedef struct RcOverride{
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    int start_frame;
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    int end_frame;
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    int qscale; // if this is 0 then quality_factor will be used instead
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    float quality_factor;
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} RcOverride;
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/* only for ME compatiblity with old apps */
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extern int motion_estimation_method;
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#define FF_MAX_B_FRAMES 8
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/* encoding support
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   these flags can be passed in AVCodecContext.flags before initing 
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   Note: note not everything is supported yet 
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*/
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#define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale 
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#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / Advanced prediction for H263
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#define CODEC_FLAG_QPEL   0x0010  ///< use qpel MC 
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#define CODEC_FLAG_GMC    0x0020  ///< use GMC 
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#define CODEC_FLAG_MV0    0x0040  ///< always try a MB with MV=<0,0> 
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#define CODEC_FLAG_PART   0x0080  ///< use data partitioning 
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/* parent program gurantees that the input for b-frame containing streams is not written to 
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   for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
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#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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#define CODEC_FLAG_PASS1 0x0200   ///< use internal 2pass ratecontrol in first  pass mode 
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#define CODEC_FLAG_PASS2 0x0400   ///< use internal 2pass ratecontrol in second pass mode 
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#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg) 
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#define CODEC_FLAG_GRAY  0x2000   ///< only decode/encode grayscale 
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#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges 
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#define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding 
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#define CODEC_FLAG_TRUNCATED  0x00010000 /** input bitstream might be truncated at a random location instead 
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                                            of only at frame boundaries */
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#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< normalize adaptive quantization 
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#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct 
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#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< force low delay
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#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< use alternate scan 
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#define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< use trellis quantization 
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#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< place global headers in extradata instead of every keyframe 
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#define CODEC_FLAG_BITEXACT       0x00800000 ///< use only bitexact stuff (except (i)dct) 
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/* Fx : Flag for h263+ extra options */
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#define CODEC_FLAG_H263P_AIC      0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
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#define CODEC_FLAG_AC_PRED        0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
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#define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector  
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#define CODEC_FLAG_CBP_RD         0x04000000 ///< use rate distortion optimization for cbp
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#define CODEC_FLAG_QP_RD          0x08000000 ///< use rate distortion optimization for qp selectioon
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#define CODEC_FLAG_H263P_AIV      0x00000008 ///< H263 Alternative inter vlc
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#define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
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#define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
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#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
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#define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
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#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
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#define CODEC_FLAG_CLOSED_GOP     0x80000000
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#define CODEC_FLAG2_FAST          0x00000001 ///< allow non spec compliant speedup tricks
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/* Unsupported options :
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 *                 Syntax Arithmetic coding (SAC)
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 *                 Reference Picture Selection
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 *                 Independant Segment Decoding */
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/* /Fx */
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/* codec capabilities */
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#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback 
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/**
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 * Codec uses get_buffer() for allocating buffers.
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 * direct rendering method 1
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 */
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#define CODEC_CAP_DR1             0x0002
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/* if 'parse_only' field is true, then avcodec_parse_frame() can be
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   used */
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#define CODEC_CAP_PARSE_ONLY      0x0004
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#define CODEC_CAP_TRUNCATED       0x0008
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/* codec can export data for HW decoding (XvMC) */
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#define CODEC_CAP_HWACCEL         0x0010
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/** codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data */
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#define CODEC_CAP_DELAY           0x0020
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//the following defines might change, so dont expect compatibility if u use them
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#define MB_TYPE_INTRA4x4   0x0001
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#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
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#define MB_TYPE_INTRA_PCM  0x0004 //FIXME h264 specific
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#define MB_TYPE_16x16      0x0008
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#define MB_TYPE_16x8       0x0010
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#define MB_TYPE_8x16       0x0020
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#define MB_TYPE_8x8        0x0040
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#define MB_TYPE_INTERLACED 0x0080
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#define MB_TYPE_DIRECT2     0x0100 //FIXME
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#define MB_TYPE_ACPRED     0x0200
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#define MB_TYPE_GMC        0x0400
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#define MB_TYPE_SKIP       0x0800
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#define MB_TYPE_P0L0       0x1000
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#define MB_TYPE_P1L0       0x2000
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#define MB_TYPE_P0L1       0x4000
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#define MB_TYPE_P1L1       0x8000
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#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
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#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
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#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
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#define MB_TYPE_QUANT      0x00010000
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#define MB_TYPE_CBP        0x00020000
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//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
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/**
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 * Pan Scan area.
347
 * 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{
350
    /**
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     * id.
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     * - encoding: set by user.
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     * - decoding: set by lavc
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     */
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    int id;
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    /**
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     * width and height in 1/16 pel
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     * - encoding: set by user.
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     * - decoding: set by lavc
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     */
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    int width;
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    int height;
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    /**
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     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
367
     * - 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];
371
}AVPanScan;
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#define FF_COMMON_FRAME \
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    /**\
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     * pointer to the picture planes.\
376
     * this might be different from the first allocated byte\
377
     * - encoding: \
378
     * - decoding: \
379
     */\
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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\
384
     * this isnt used by lavc unless the default get/release_buffer() is used\
385
     * - encoding: \
386
     * - decoding: \
387
     */\
388
    uint8_t *base[4];\
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    /**\
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     * 1 -> keyframe, 0-> not\
391
     * - encoding: set by lavc\
392
     * - decoding: set by lavc\
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     */\
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    int key_frame;\
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\
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    /**\
397
     * picture type of the frame, see ?_TYPE below.\
398
     * - encoding: set by lavc for coded_picture (and set by user for input)\
399
     * - decoding: set by lavc\
400
     */\
401
    int pict_type;\
402
\
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    /**\
404
     * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
405
     * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
406
     * - encoding: MUST be set by user\
407
     * - decoding: set by lavc\
408
     */\
409
    int64_t pts;\
410
\
411
    /**\
412
     * picture number in bitstream order.\
413
     * - encoding: set by\
414
     * - decoding: set by lavc\
415
     */\
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    int coded_picture_number;\
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    /**\
418
     * picture number in display order.\
419
     * - encoding: set by\
420
     * - decoding: set by lavc\
421
     */\
422
    int display_picture_number;\
423
\
424
    /**\
425
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
426
     * - encoding: set by lavc for coded_picture (and set by user for input)\
427
     * - decoding: set by lavc\
428
     */\
429
    int quality; \
430
\
431
    /**\
432
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
433
     * set to INT_MAX if the buffer has not been used yet \
434
     * - encoding: unused\
435
     * - decoding: MUST be set by get_buffer()\
436
     */\
437
    int age;\
438
\
439
    /**\
440
     * is this picture used as reference\
441
     * - encoding: unused\
442
     * - decoding: set by lavc (before get_buffer() call))\
443
     */\
444
    int reference;\
445
\
446
    /**\
447
     * QP table\
448
     * - encoding: unused\
449
     * - decoding: set by lavc\
450
     */\
451
    int8_t *qscale_table;\
452
    /**\
453
     * QP store stride\
454
     * - encoding: unused\
455
     * - decoding: set by lavc\
456
     */\
457
    int qstride;\
458
\
459
    /**\
460
     * mbskip_table[mb]>=1 if MB didnt change\
461
     * stride= mb_width = (width+15)>>4\
462
     * - encoding: unused\
463
     * - decoding: set by lavc\
464
     */\
465
    uint8_t *mbskip_table;\
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\
467
    /**\
468
     * Motion vector table\
469
     * - encoding: set by user\
470
     * - decoding: set by lavc\
471
     */\
472
    int16_t (*motion_val[2])[2];\
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\
474
    /**\
475
     * Macroblock type table\
476
     * mb_type_base + mb_width + 2\
477
     * - encoding: set by user\
478
     * - decoding: set by lavc\
479
     */\
480
    uint32_t *mb_type;\
481
\
482
    /**\
483
     * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
484
     * - encoding: unused\
485
     * - decoding: set by lavc\
486
     */\
487
    uint8_t motion_subsample_log2;\
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\
489
    /**\
490
     * for some private data of the user\
491
     * - encoding: unused\
492
     * - decoding: set by user\
493
     */\
494
    void *opaque;\
495
\
496
    /**\
497
     * error\
498
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
499
     * - decoding: unused\
500
     */\
501
    uint64_t error[4];\
502
\
503
    /**\
504
     * type of the buffer (to keep track of who has to dealloc data[*])\
505
     * - encoding: set by the one who allocs it\
506
     * - decoding: set by the one who allocs it\
507
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
508
     */\
509
    int type;\
510
    \
511
    /**\
512
     * when decoding, this signal how much the picture must be delayed.\
513
     * extra_delay = repeat_pict / (2*fps)\
514
     * - encoding: unused\
515
     * - decoding: set by lavc\
516
     */\
517
    int repeat_pict;\
518
    \
519
    /**\
520
     * \
521
     */\
522
    int qscale_type;\
523
    \
524
    /**\
525
     * The content of the picture is interlaced.\
526
     * - encoding: set by user\
527
     * - decoding: set by lavc (default 0)\
528
     */\
529
    int interlaced_frame;\
530
    \
531
    /**\
532
     * if the content is interlaced, is top field displayed first.\
533
     * - encoding: set by user\
534
     * - decoding: set by lavc\
535
     */\
536
    int top_field_first;\
537
    \
538
    /**\
539
     * Pan scan.\
540
     * - encoding: set by user\
541
     * - decoding: set by lavc\
542
     */\
543
    AVPanScan *pan_scan;\
544
    \
545
    /**\
546
     * tell user application that palette has changed from previous frame.\
547
     * - encoding: ??? (no palette-enabled encoder yet)\
548
     * - decoding: set by lavc (default 0)\
549
     */\
550
    int palette_has_changed;\
551
    \
552
    /**\
553
     * Codec suggestion on buffer type if != 0\
554
     * - encoding: unused\
555
     * - decoding: set by lavc (before get_buffer() call))\
556
     */\
557
    int buffer_hints;\
558
\
559
    /**\
560
     * DCT coeffitients\
561
     * - encoding: unused\
562
     * - decoding: set by lavc\
563
     */\
564
    short *dct_coeff;\
565
\
566
    /**\
567
     * Motion referece frame index\
568
     * - encoding: set by user\
569
     * - decoding: set by lavc\
570
     */\
571
    int8_t *ref_index[2];
572

    
573
#define FF_QSCALE_TYPE_MPEG1        0
574
#define FF_QSCALE_TYPE_MPEG2        1
575

    
576
#define FF_BUFFER_TYPE_INTERNAL 1
577
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
578
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
579
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
580

    
581

    
582
#define FF_I_TYPE 1 // Intra
583
#define FF_P_TYPE 2 // Predicted
584
#define FF_B_TYPE 3 // Bi-dir predicted
585
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
586
#define FF_SI_TYPE 5
587
#define FF_SP_TYPE 6
588

    
589
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
590
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
591
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
592
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
593

    
594
/**
595
 * Audio Video Frame.
596
 */
597
typedef struct AVFrame {
598
    FF_COMMON_FRAME
599
} AVFrame;
600

    
601
#define DEFAULT_FRAME_RATE_BASE 1001000
602

    
603
/**
604
 * Used by av_log
605
 */
606
typedef struct AVCLASS AVClass;
607
struct AVCLASS {
608
    const char* class_name;
609
    const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
610
                                        or AVFormatContext, which begin with an AVClass.
611
                                        Needed because av_log is in libavcodec and has no visibility
612
                                        of AVIn/OutputFormat */
613
};
614

    
615
/**
616
 * main external api structure.
617
 */
618
typedef struct AVCodecContext {
619
    /**
620
     * Info on struct for av_log
621
     * - set by avcodec_alloc_context
622
     */
623
    AVClass *av_class;
624
    /**
625
     * the average bitrate.
626
     * - encoding: set by user. unused for constant quantizer encoding
627
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
628
     */
629
    int bit_rate;
630

    
631
    /**
632
     * number of bits the bitstream is allowed to diverge from the reference.
633
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
634
     * - encoding: set by user. unused for constant quantizer encoding
635
     * - decoding: unused
636
     */
637
    int bit_rate_tolerance; 
638

    
639
    /**
640
     * CODEC_FLAG_*.
641
     * - encoding: set by user.
642
     * - decoding: set by user.
643
     */
644
    int flags;
645

    
646
    /**
647
     * some codecs needs additionnal format info. It is stored here
648
     * - encoding: set by user. 
649
     * - decoding: set by lavc. (FIXME is this ok?)
650
     */
651
    int sub_id;
652

    
653
    /**
654
     * motion estimation algorithm used for video coding.
655
     * - encoding: MUST be set by user.
656
     * - decoding: unused
657
     */
658
    int me_method;
659

    
660
    /**
661
     * some codecs need / can use extra-data like huffman tables.
662
     * mjpeg: huffman tables
663
     * rv10: additional flags
664
     * mpeg4: global headers (they can be in the bitstream or here)
665
     * - encoding: set/allocated/freed by lavc.
666
     * - decoding: set/allocated/freed by user.
667
     */
668
    void *extradata;
669
    int extradata_size;
670
    
671
    /* video only */
672
    /**
673
     * frames per sec multiplied by frame_rate_base.
674
     * for variable fps this is the precission, so if the timestamps 
675
     * can be specified in msec precssion then this is 1000*frame_rate_base
676
     * - encoding: MUST be set by user
677
     * - decoding: set by lavc. 0 or the frame_rate if available
678
     */
679
    int frame_rate;
680
    
681
    /**
682
     * picture width / height.
683
     * - encoding: MUST be set by user. 
684
     * - decoding: set by lavc.
685
     * Note, for compatibility its possible to set this instead of 
686
     * coded_width/height before decoding
687
     */
688
    int width, height;
689
    
690
#define FF_ASPECT_EXTENDED 15
691

    
692
    /**
693
     * the number of pictures in a group of pitures, or 0 for intra_only.
694
     * - encoding: set by user.
695
     * - decoding: unused
696
     */
697
    int gop_size;
698

    
699
    /**
700
     * pixel format, see PIX_FMT_xxx.
701
     * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
702
     *                    conversion is in order. This only works for
703
     *                    codecs with one supported pix_fmt, we should
704
     *                    do something for a generic case as well.
705
     * - decoding: set by lavc.
706
     */
707
    enum PixelFormat pix_fmt;
708
 
709
    /**
710
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
711
     * has to read frames at native frame rate.
712
     * - encoding: set by user.
713
     * - decoding: unused.
714
     */
715
    int rate_emu;
716
       
717
    /**
718
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
719
     * decoder to draw an horizontal band. It improve cache usage. Not
720
     * all codecs can do that. You must check the codec capabilities
721
     * before
722
     * - encoding: unused
723
     * - decoding: set by user.
724
     * @param height the height of the slice
725
     * @param y the y position of the slice
726
     * @param type 1->top field, 2->bottom field, 3->frame
727
     * @param offset offset into the AVFrame.data from which the slice should be read
728
     */
729
    void (*draw_horiz_band)(struct AVCodecContext *s,
730
                            const AVFrame *src, int offset[4],
731
                            int y, int type, int height);
732

    
733
    /* audio only */
734
    int sample_rate; ///< samples per sec 
735
    int channels;
736
    int sample_fmt;  ///< sample format, currenly unused 
737

    
738
    /* the following data should not be initialized */
739
    int frame_size;     ///< in samples, initialized when calling 'init' 
740
    int frame_number;   ///< audio or video frame number 
741
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
742
    
743
    /**
744
     * number of frames the decoded output will be delayed relative to 
745
     * the encoded input.
746
     * - encoding: set by lavc.
747
     * - decoding: unused
748
     */
749
    int delay;
750
    
751
    /* - encoding parameters */
752
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
753
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
754
    
755
    /**
756
     * minimum quantizer.
757
     * - encoding: set by user.
758
     * - decoding: unused
759
     */
760
    int qmin;
761

    
762
    /**
763
     * maximum quantizer.
764
     * - encoding: set by user.
765
     * - decoding: unused
766
     */
767
    int qmax;
768

    
769
    /**
770
     * maximum quantizer difference etween frames.
771
     * - encoding: set by user.
772
     * - decoding: unused
773
     */
774
    int max_qdiff;
775

    
776
    /**
777
     * maximum number of b frames between non b frames.
778
     * note: the output will be delayed by max_b_frames+1 relative to the input
779
     * - encoding: set by user.
780
     * - decoding: unused
781
     */
782
    int max_b_frames;
783

    
784
    /**
785
     * qscale factor between ip and b frames.
786
     * - encoding: set by user.
787
     * - decoding: unused
788
     */
789
    float b_quant_factor;
790
    
791
    /** obsolete FIXME remove */
792
    int rc_strategy;
793
    int b_frame_strategy;
794

    
795
    /**
796
     * hurry up amount.
797
     * - encoding: unused
798
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
799
     */
800
    int hurry_up;
801
    
802
    struct AVCodec *codec;
803
    
804
    void *priv_data;
805

    
806
    /* unused, FIXME remove*/
807
    int rtp_mode;
808
    
809
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
810
                            /* do it's best to deliver a chunk with size    */
811
                            /* below rtp_payload_size, the chunk will start */
812
                            /* with a start code on some codecs like H.263  */
813
                            /* This doesn't take account of any particular  */
814
                            /* headers inside the transmited RTP payload    */
815

    
816
    
817
    /* The RTP callcack: This function is called  */
818
    /* every time the encoder as a packet to send */
819
    /* Depends on the encoder if the data starts  */
820
    /* with a Start Code (it should) H.263 does   */
821
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number); 
822

    
823
    /* statistics, used for 2-pass encoding */
824
    int mv_bits;
825
    int header_bits;
826
    int i_tex_bits;
827
    int p_tex_bits;
828
    int i_count;
829
    int p_count;
830
    int skip_count;
831
    int misc_bits;
832
    
833
    /**
834
     * number of bits used for the previously encoded frame.
835
     * - encoding: set by lavc
836
     * - decoding: unused
837
     */
838
    int frame_bits;
839

    
840
    /**
841
     * private data of the user, can be used to carry app specific stuff.
842
     * - encoding: set by user
843
     * - decoding: set by user
844
     */
845
    void *opaque;
846

    
847
    char codec_name[32];
848
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
849
    enum CodecID codec_id; /* see CODEC_ID_xxx */
850
    
851
    /**
852
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
853
     * this is used to workaround some encoder bugs
854
     * - encoding: set by user, if not then the default based on codec_id will be used
855
     * - decoding: set by user, will be converted to upper case by lavc during init
856
     */
857
    unsigned int codec_tag;
858
    
859
    /**
860
     * workaround bugs in encoders which sometimes cannot be detected automatically.
861
     * - encoding: unused
862
     * - decoding: set by user
863
     */
864
    int workaround_bugs;
865
#define FF_BUG_AUTODETECT       1  ///< autodetection
866
#define FF_BUG_OLD_MSMPEG4      2
867
#define FF_BUG_XVID_ILACE       4
868
#define FF_BUG_UMP4             8
869
#define FF_BUG_NO_PADDING       16
870
#define FF_BUG_AMV              32
871
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
872
#define FF_BUG_QPEL_CHROMA      64
873
#define FF_BUG_STD_QPEL         128
874
#define FF_BUG_QPEL_CHROMA2     256
875
#define FF_BUG_DIRECT_BLOCKSIZE 512
876
#define FF_BUG_EDGE             1024
877
#define FF_BUG_HPEL_CHROMA      2048
878
#define FF_BUG_DC_CLIP          4096
879
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
880
        
881
    /**
882
     * luma single coeff elimination threshold.
883
     * - encoding: set by user
884
     * - decoding: unused
885
     */
886
    int luma_elim_threshold;
887
    
888
    /**
889
     * chroma single coeff elimination threshold.
890
     * - encoding: set by user
891
     * - decoding: unused
892
     */
893
    int chroma_elim_threshold;
894
    
895
    /**
896
     * strictly follow the std (MPEG4, ...).
897
     * - encoding: set by user
898
     * - decoding: unused
899
     */
900
    int strict_std_compliance;
901
    
902
    /**
903
     * qscale offset between ip and b frames.
904
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
905
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
906
     * - encoding: set by user.
907
     * - decoding: unused
908
     */
909
    float b_quant_offset;
910
    
911
    /**
912
     * error resilience higher values will detect more errors but may missdetect
913
     * some more or less valid parts as errors.
914
     * - encoding: unused
915
     * - decoding: set by user
916
     */
917
    int error_resilience;
918
#define FF_ER_CAREFULL        1
919
#define FF_ER_COMPLIANT       2
920
#define FF_ER_AGGRESSIVE      3
921
#define FF_ER_VERY_AGGRESSIVE 4
922
    
923
    /**
924
     * called at the beginning of each frame to get a buffer for it.
925
     * if pic.reference is set then the frame will be read later by lavc
926
     * avcodec_align_dimensions() should be used to find the required width and
927
     * height, as they normally need to be rounded up to the next multiple of 16
928
     * - encoding: unused
929
     * - decoding: set by lavc, user can override
930
     */
931
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
932
    
933
    /**
934
     * called to release buffers which where allocated with get_buffer.
935
     * a released buffer can be reused in get_buffer()
936
     * pic.data[*] must be set to NULL
937
     * - encoding: unused
938
     * - decoding: set by lavc, user can override
939
     */
940
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
941

    
942
    /**
943
     * if 1 the stream has a 1 frame delay during decoding.
944
     * - encoding: set by lavc
945
     * - decoding: set by lavc
946
     */
947
    int has_b_frames;
948
    
949
    int block_align; ///< used by some WAV based audio codecs
950
    
951
    int parse_only; /* - decoding only: if true, only parsing is done
952
                       (function avcodec_parse_frame()). The frame
953
                       data is returned. Only MPEG codecs support this now. */
954
    
955
    /**
956
     * 0-> h263 quant 1-> mpeg quant.
957
     * - encoding: set by user.
958
     * - decoding: unused
959
     */
960
    int mpeg_quant;
961
    
962
    /**
963
     * pass1 encoding statistics output buffer.
964
     * - encoding: set by lavc
965
     * - decoding: unused
966
     */
967
    char *stats_out;
968
    
969
    /**
970
     * pass2 encoding statistics input buffer.
971
     * concatenated stuff from stats_out of pass1 should be placed here
972
     * - encoding: allocated/set/freed by user
973
     * - decoding: unused
974
     */
975
    char *stats_in;
976
    
977
    /**
978
     * ratecontrol qmin qmax limiting method.
979
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
980
     * - encoding: set by user.
981
     * - decoding: unused
982
     */
983
    float rc_qsquish;
984

    
985
    float rc_qmod_amp;
986
    int rc_qmod_freq;
987
    
988
    /**
989
     * ratecontrol override, see RcOverride.
990
     * - encoding: allocated/set/freed by user.
991
     * - decoding: unused
992
     */
993
    RcOverride *rc_override;
994
    int rc_override_count;
995
    
996
    /**
997
     * rate control equation.
998
     * - encoding: set by user
999
     * - decoding: unused
1000
     */
1001
    char *rc_eq;
1002
    
1003
    /**
1004
     * maximum bitrate.
1005
     * - encoding: set by user.
1006
     * - decoding: unused
1007
     */
1008
    int rc_max_rate;
1009
    
1010
    /**
1011
     * minimum bitrate.
1012
     * - encoding: set by user.
1013
     * - decoding: unused
1014
     */
1015
    int rc_min_rate;
1016
    
1017
    /**
1018
     * decoder bitstream buffer size.
1019
     * - encoding: set by user.
1020
     * - decoding: unused
1021
     */
1022
    int rc_buffer_size;
1023
    float rc_buffer_aggressivity;
1024

    
1025
    /**
1026
     * qscale factor between p and i frames.
1027
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1028
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1029
     * - encoding: set by user.
1030
     * - decoding: unused
1031
     */
1032
    float i_quant_factor;
1033
    
1034
    /**
1035
     * qscale offset between p and i frames.
1036
     * - encoding: set by user.
1037
     * - decoding: unused
1038
     */
1039
    float i_quant_offset;
1040
    
1041
    /**
1042
     * initial complexity for pass1 ratecontrol.
1043
     * - encoding: set by user.
1044
     * - decoding: unused
1045
     */
1046
    float rc_initial_cplx;
1047

    
1048
    /**
1049
     * dct algorithm, see FF_DCT_* below.
1050
     * - encoding: set by user
1051
     * - decoding: unused
1052
     */
1053
    int dct_algo;
1054
#define FF_DCT_AUTO    0
1055
#define FF_DCT_FASTINT 1
1056
#define FF_DCT_INT     2
1057
#define FF_DCT_MMX     3
1058
#define FF_DCT_MLIB    4
1059
#define FF_DCT_ALTIVEC 5
1060
#define FF_DCT_FAAN    6
1061
    
1062
    /**
1063
     * luminance masking (0-> disabled).
1064
     * - encoding: set by user
1065
     * - decoding: unused
1066
     */
1067
    float lumi_masking;
1068
    
1069
    /**
1070
     * temporary complexity masking (0-> disabled).
1071
     * - encoding: set by user
1072
     * - decoding: unused
1073
     */
1074
    float temporal_cplx_masking;
1075
    
1076
    /**
1077
     * spatial complexity masking (0-> disabled).
1078
     * - encoding: set by user
1079
     * - decoding: unused
1080
     */
1081
    float spatial_cplx_masking;
1082
    
1083
    /**
1084
     * p block masking (0-> disabled).
1085
     * - encoding: set by user
1086
     * - decoding: unused
1087
     */
1088
    float p_masking;
1089

    
1090
    /**
1091
     * darkness masking (0-> disabled).
1092
     * - encoding: set by user
1093
     * - decoding: unused
1094
     */
1095
    float dark_masking;
1096
    
1097
    
1098
    /* for binary compatibility */
1099
    int unused;
1100
    
1101
    /**
1102
     * idct algorithm, see FF_IDCT_* below.
1103
     * - encoding: set by user
1104
     * - decoding: set by user
1105
     */
1106
    int idct_algo;
1107
#define FF_IDCT_AUTO         0
1108
#define FF_IDCT_INT          1
1109
#define FF_IDCT_SIMPLE       2
1110
#define FF_IDCT_SIMPLEMMX    3
1111
#define FF_IDCT_LIBMPEG2MMX  4
1112
#define FF_IDCT_PS2          5
1113
#define FF_IDCT_MLIB         6
1114
#define FF_IDCT_ARM          7
1115
#define FF_IDCT_ALTIVEC      8
1116
#define FF_IDCT_SH4          9
1117
#define FF_IDCT_SIMPLEARM    10
1118
#define FF_IDCT_H264         11
1119

    
1120
    /**
1121
     * slice count.
1122
     * - encoding: set by lavc
1123
     * - decoding: set by user (or 0)
1124
     */
1125
    int slice_count;
1126
    /**
1127
     * slice offsets in the frame in bytes.
1128
     * - encoding: set/allocated by lavc
1129
     * - decoding: set/allocated by user (or NULL)
1130
     */
1131
    int *slice_offset;
1132

    
1133
    /**
1134
     * error concealment flags.
1135
     * - encoding: unused
1136
     * - decoding: set by user
1137
     */
1138
    int error_concealment;
1139
#define FF_EC_GUESS_MVS   1
1140
#define FF_EC_DEBLOCK     2
1141

    
1142
    /**
1143
     * dsp_mask could be add used to disable unwanted CPU features
1144
     * CPU features (i.e. MMX, SSE. ...)
1145
     *
1146
     * with FORCE flag you may instead enable given CPU features
1147
     * (Dangerous: usable in case of misdetection, improper usage however will
1148
     * result into program crash)
1149
     */
1150
    unsigned dsp_mask;
1151
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1152
    /* lower 16 bits - CPU features */
1153
#ifdef HAVE_MMX
1154
#define FF_MM_MMX        0x0001 /* standard MMX */
1155
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1156
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1157
#define FF_MM_SSE        0x0008 /* SSE functions */
1158
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1159
#endif /* HAVE_MMX */
1160

    
1161
    /**
1162
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1163
     * - encoding: set by lavc
1164
     * - decoding: set by user
1165
     */
1166
     int bits_per_sample;
1167
    
1168
    /**
1169
     * prediction method (needed for huffyuv).
1170
     * - encoding: set by user
1171
     * - decoding: unused
1172
     */
1173
     int prediction_method;
1174
#define FF_PRED_LEFT   0
1175
#define FF_PRED_PLANE  1
1176
#define FF_PRED_MEDIAN 2
1177
    
1178
    /**
1179
     * sample aspect ratio (0 if unknown).
1180
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1181
     * - encoding: set by user.
1182
     * - decoding: set by lavc.
1183
     */
1184
    AVRational sample_aspect_ratio;
1185

    
1186
    /**
1187
     * the picture in the bitstream.
1188
     * - encoding: set by lavc
1189
     * - decoding: set by lavc
1190
     */
1191
    AVFrame *coded_frame;
1192

    
1193
    /**
1194
     * debug.
1195
     * - encoding: set by user.
1196
     * - decoding: set by user.
1197
     */
1198
    int debug;
1199
#define FF_DEBUG_PICT_INFO 1
1200
#define FF_DEBUG_RC        2
1201
#define FF_DEBUG_BITSTREAM 4
1202
#define FF_DEBUG_MB_TYPE   8
1203
#define FF_DEBUG_QP        16
1204
#define FF_DEBUG_MV        32
1205
#define FF_DEBUG_DCT_COEFF 0x00000040
1206
#define FF_DEBUG_SKIP      0x00000080
1207
#define FF_DEBUG_STARTCODE 0x00000100
1208
#define FF_DEBUG_PTS       0x00000200
1209
#define FF_DEBUG_ER        0x00000400
1210
#define FF_DEBUG_MMCO      0x00000800
1211
#define FF_DEBUG_BUGS      0x00001000
1212
#define FF_DEBUG_VIS_QP    0x00002000
1213
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1214
    
1215
    /**
1216
     * debug.
1217
     * - encoding: set by user.
1218
     * - decoding: set by user.
1219
     */
1220
    int debug_mv;
1221
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1222
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1223
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1224

    
1225
    /**
1226
     * error.
1227
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1228
     * - decoding: unused
1229
     */
1230
    uint64_t error[4];
1231
    
1232
    /**
1233
     * minimum MB quantizer.
1234
     * - encoding: set by user.
1235
     * - decoding: unused
1236
     */
1237
    int mb_qmin;
1238

    
1239
    /**
1240
     * maximum MB quantizer.
1241
     * - encoding: set by user.
1242
     * - decoding: unused
1243
     */
1244
    int mb_qmax;
1245
    
1246
    /**
1247
     * motion estimation compare function.
1248
     * - encoding: set by user.
1249
     * - decoding: unused
1250
     */
1251
    int me_cmp;
1252
    /**
1253
     * subpixel motion estimation compare function.
1254
     * - encoding: set by user.
1255
     * - decoding: unused
1256
     */
1257
    int me_sub_cmp;
1258
    /**
1259
     * macroblock compare function (not supported yet).
1260
     * - encoding: set by user.
1261
     * - decoding: unused
1262
     */
1263
    int mb_cmp;
1264
    /**
1265
     * interlaced dct compare function
1266
     * - encoding: set by user.
1267
     * - decoding: unused
1268
     */
1269
    int ildct_cmp;
1270
#define FF_CMP_SAD  0
1271
#define FF_CMP_SSE  1
1272
#define FF_CMP_SATD 2
1273
#define FF_CMP_DCT  3
1274
#define FF_CMP_PSNR 4
1275
#define FF_CMP_BIT  5
1276
#define FF_CMP_RD   6
1277
#define FF_CMP_ZERO 7
1278
#define FF_CMP_VSAD 8
1279
#define FF_CMP_VSSE 9
1280
#define FF_CMP_NSSE 10
1281
#define FF_CMP_W53  11
1282
#define FF_CMP_W97  12
1283
#define FF_CMP_CHROMA 256
1284
    
1285
    /**
1286
     * ME diamond size & shape.
1287
     * - encoding: set by user.
1288
     * - decoding: unused
1289
     */
1290
    int dia_size;
1291

    
1292
    /**
1293
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1294
     * - encoding: set by user.
1295
     * - decoding: unused
1296
     */
1297
    int last_predictor_count;
1298

    
1299
    /**
1300
     * pre pass for motion estimation.
1301
     * - encoding: set by user.
1302
     * - decoding: unused
1303
     */
1304
    int pre_me;
1305

    
1306
    /**
1307
     * motion estimation pre pass compare function.
1308
     * - encoding: set by user.
1309
     * - decoding: unused
1310
     */
1311
    int me_pre_cmp;
1312

    
1313
    /**
1314
     * ME pre pass diamond size & shape.
1315
     * - encoding: set by user.
1316
     * - decoding: unused
1317
     */
1318
    int pre_dia_size;
1319

    
1320
    /**
1321
     * subpel ME quality.
1322
     * - encoding: set by user.
1323
     * - decoding: unused
1324
     */
1325
    int me_subpel_quality;
1326

    
1327
    /**
1328
     * callback to negotiate the pixelFormat.
1329
     * @param fmt is the list of formats which are supported by the codec,
1330
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1331
     * the first is allways the native one
1332
     * @return the choosen format
1333
     * - encoding: unused
1334
     * - decoding: set by user, if not set then the native format will always be choosen
1335
     */
1336
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1337

    
1338
    /**
1339
     * DTG active format information (additionnal aspect ratio
1340
     * information only used in DVB MPEG2 transport streams). 0 if
1341
     * not set.
1342
     * 
1343
     * - encoding: unused.
1344
     * - decoding: set by decoder 
1345
     */
1346
    int dtg_active_format;
1347
#define FF_DTG_AFD_SAME         8
1348
#define FF_DTG_AFD_4_3          9
1349
#define FF_DTG_AFD_16_9         10
1350
#define FF_DTG_AFD_14_9         11
1351
#define FF_DTG_AFD_4_3_SP_14_9  13
1352
#define FF_DTG_AFD_16_9_SP_14_9 14
1353
#define FF_DTG_AFD_SP_4_3       15
1354

    
1355
    /**
1356
     * Maximum motion estimation search range in subpel units.
1357
     * if 0 then no limit
1358
     * 
1359
     * - encoding: set by user.
1360
     * - decoding: unused.
1361
     */
1362
    int me_range;
1363

    
1364
    /**
1365
     * frame_rate_base.
1366
     * for variable fps this is 1
1367
     * - encoding: set by user.
1368
     * - decoding: set by lavc.
1369
     * @todo move this after frame_rate
1370
     */
1371

    
1372
    int frame_rate_base;
1373
    /**
1374
     * intra quantizer bias.
1375
     * - encoding: set by user.
1376
     * - decoding: unused
1377
     */
1378
    int intra_quant_bias;
1379
#define FF_DEFAULT_QUANT_BIAS 999999
1380
    
1381
    /**
1382
     * inter quantizer bias.
1383
     * - encoding: set by user.
1384
     * - decoding: unused
1385
     */
1386
    int inter_quant_bias;
1387

    
1388
    /**
1389
     * color table ID.
1390
     * - encoding: unused.
1391
     * - decoding: which clrtable should be used for 8bit RGB images
1392
     *             table have to be stored somewhere FIXME
1393
     */
1394
    int color_table_id;
1395
    
1396
    /**
1397
     * internal_buffer count. 
1398
     * Dont touch, used by lavc default_get_buffer()
1399
     */
1400
    int internal_buffer_count;
1401
    
1402
    /**
1403
     * internal_buffers. 
1404
     * Dont touch, used by lavc default_get_buffer()
1405
     */
1406
    void *internal_buffer;
1407

    
1408
#define FF_LAMBDA_SHIFT 7
1409
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1410
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1411
#define FF_LAMBDA_MAX (256*128-1)
1412

    
1413
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1414
    /**
1415
     * global quality for codecs which cannot change it per frame.
1416
     * this should be proportional to MPEG1/2/4 qscale.
1417
     * - encoding: set by user.
1418
     * - decoding: unused
1419
     */
1420
    int global_quality;
1421
    
1422
#define FF_CODER_TYPE_VLC   0
1423
#define FF_CODER_TYPE_AC    1
1424
    /**
1425
     * coder type
1426
     * - encoding: set by user.
1427
     * - decoding: unused
1428
     */
1429
    int coder_type;
1430

    
1431
    /**
1432
     * context model
1433
     * - encoding: set by user.
1434
     * - decoding: unused
1435
     */
1436
    int context_model;
1437
    
1438
    /**
1439
     * slice flags
1440
     * - encoding: unused
1441
     * - decoding: set by user.
1442
     */
1443
    int slice_flags;
1444
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1445
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1446
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1447

    
1448
    /**
1449
     * XVideo Motion Acceleration
1450
     * - encoding: forbidden
1451
     * - decoding: set by decoder
1452
     */
1453
    int xvmc_acceleration;
1454
    
1455
    /**
1456
     * macroblock decision mode
1457
     * - encoding: set by user.
1458
     * - decoding: unused
1459
     */
1460
    int mb_decision;
1461
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1462
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1463
#define FF_MB_DECISION_RD     2        ///< rate distoration
1464

    
1465
    /**
1466
     * custom intra quantization matrix
1467
     * - encoding: set by user, can be NULL
1468
     * - decoding: set by lavc
1469
     */
1470
    uint16_t *intra_matrix;
1471

    
1472
    /**
1473
     * custom inter quantization matrix
1474
     * - encoding: set by user, can be NULL
1475
     * - decoding: set by lavc
1476
     */
1477
    uint16_t *inter_matrix;
1478
    
1479
    /**
1480
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1481
     * this is used to workaround some encoder bugs
1482
     * - encoding: unused
1483
     * - decoding: set by user, will be converted to upper case by lavc during init
1484
     */
1485
    unsigned int stream_codec_tag;
1486

    
1487
    /**
1488
     * scene change detection threshold.
1489
     * 0 is default, larger means fewer detected scene changes
1490
     * - encoding: set by user.
1491
     * - decoding: unused
1492
     */
1493
    int scenechange_threshold;
1494

    
1495
    /**
1496
     * minimum lagrange multipler
1497
     * - encoding: set by user.
1498
     * - decoding: unused
1499
     */
1500
    int lmin;
1501

    
1502
    /**
1503
     * maximum lagrange multipler
1504
     * - encoding: set by user.
1505
     * - decoding: unused
1506
     */
1507
    int lmax;
1508

    
1509
    /**
1510
     * Palette control structure
1511
     * - encoding: ??? (no palette-enabled encoder yet)
1512
     * - decoding: set by user.
1513
     */
1514
    struct AVPaletteControl *palctrl;
1515

    
1516
    /**
1517
     * noise reduction strength
1518
     * - encoding: set by user.
1519
     * - decoding: unused
1520
     */
1521
    int noise_reduction;
1522
    
1523
    /**
1524
     * called at the beginning of a frame to get cr buffer for it.
1525
     * buffer type (size, hints) must be the same. lavc won't check it.
1526
     * lavc will pass previous buffer in pic, function should return
1527
     * same buffer or new buffer with old frame "painted" into it.
1528
     * if pic.data[0] == NULL must behave like get_buffer().
1529
     * - encoding: unused
1530
     * - decoding: set by lavc, user can override
1531
     */
1532
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1533

    
1534
    /**
1535
     * number of bits which should be loaded into the rc buffer before decoding starts
1536
     * - encoding: set by user.
1537
     * - decoding: unused
1538
     */
1539
    int rc_initial_buffer_occupancy;
1540

    
1541
    /**
1542
     *
1543
     * - encoding: set by user.
1544
     * - decoding: unused
1545
     */
1546
    int inter_threshold;
1547

    
1548
    /**
1549
     * CODEC_FLAG2_*.
1550
     * - encoding: set by user.
1551
     * - decoding: set by user.
1552
     */
1553
    int flags2;
1554

    
1555
    /**
1556
     * simulates errors in the bitstream to test error concealment.
1557
     * - encoding: set by user.
1558
     * - decoding: unused.
1559
     */
1560
    int error_rate;
1561
    
1562
    /**
1563
     * MP3 antialias algorithm, see FF_AA_* below.
1564
     * - encoding: unused
1565
     * - decoding: set by user
1566
     */
1567
    int antialias_algo;
1568
#define FF_AA_AUTO    0
1569
#define FF_AA_FASTINT 1 //not implemented yet
1570
#define FF_AA_INT     2
1571
#define FF_AA_FLOAT   3
1572
    /**
1573
     * Quantizer noise shaping.
1574
     * - encoding: set by user
1575
     * - decoding: unused
1576
     */
1577
    int quantizer_noise_shaping;
1578

    
1579
    /**
1580
     * Thread count.
1581
     * is used to decide how many independant tasks should be passed to execute()
1582
     * - encoding: set by user
1583
     * - decoding: set by user
1584
     */
1585
    int thread_count;
1586
    
1587
    /**
1588
     * the codec may call this to execute several independant things. it will return only after
1589
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1590
     * default implementation will execute the parts serially
1591
     * @param count the number of things to execute
1592
     * - encoding: set by lavc, user can override
1593
     * - decoding: set by lavc, user can override
1594
     */
1595
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1596
    
1597
    /**
1598
     * Thread opaque.
1599
     * can be used by execute() to store some per AVCodecContext stuff.
1600
     * - encoding: set by execute()
1601
     * - decoding: set by execute()
1602
     */
1603
    void *thread_opaque;
1604

    
1605
    /**
1606
     * Motion estimation threshold. under which no motion estimation is 
1607
     * performed, but instead the user specified motion vectors are used
1608
     * 
1609
     * - encoding: set by user
1610
     * - decoding: unused
1611
     */
1612
     int me_threshold;
1613

    
1614
    /**
1615
     * Macroblock threshold. under which the user specified macroblock types will be used
1616
     * - encoding: set by user
1617
     * - decoding: unused
1618
     */
1619
     int mb_threshold;
1620

    
1621
    /**
1622
     * precision of the intra dc coefficient - 8.
1623
     * - encoding: set by user
1624
     * - decoding: unused
1625
     */
1626
     int intra_dc_precision;
1627

    
1628
    /**
1629
     * noise vs. sse weight for the nsse comparsion function.
1630
     * - encoding: set by user
1631
     * - decoding: unused
1632
     */
1633
     int nsse_weight;
1634

    
1635
    /**
1636
     * number of macroblock rows at the top which are skiped.
1637
     * - encoding: unused
1638
     * - decoding: set by user
1639
     */
1640
     int skip_top;
1641

    
1642
    /**
1643
     * number of macroblock rows at the bottom which are skiped.
1644
     * - encoding: unused
1645
     * - decoding: set by user
1646
     */
1647
     int skip_bottom;
1648

    
1649
    /**
1650
     * profile
1651
     * - encoding: set by user
1652
     * - decoding: set by lavc
1653
     */
1654
     int profile;
1655
#define FF_PROFILE_UNKNOWN -99
1656

    
1657
    /**
1658
     * level
1659
     * - encoding: set by user
1660
     * - decoding: set by lavc
1661
     */
1662
     int level;
1663
#define FF_LEVEL_UNKNOWN -99
1664

    
1665
    /**
1666
     * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1667
     * - encoding: unused
1668
     * - decoding: set by user
1669
     */
1670
     int lowres;
1671

    
1672
    /**
1673
     * bistream width / height. may be different from width/height if lowres
1674
     * or other things are used
1675
     * - encoding: unused
1676
     * - decoding: set by user before init if known, codec should override / dynamically change if needed
1677
     */
1678
    int coded_width, coded_height;
1679
} AVCodecContext;
1680

    
1681

    
1682
/**
1683
 * AVOption.
1684
 */
1685
typedef struct AVOption {
1686
    /** options' name */
1687
    const char *name; /* if name is NULL, it indicates a link to next */
1688
    /** short English text help or const struct AVOption* subpointer */
1689
    const char *help; //        const struct AVOption* sub;
1690
    /** offset to context structure where the parsed value should be stored */
1691
    int offset;
1692
    /** options' type */
1693
    int type;
1694
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1695
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1696
#define FF_OPT_TYPE_INT 3       ///< integer
1697
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1698
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1699
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1700
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1701
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1702
    /** min value  (min == max   ->  no limits) */
1703
    double min;
1704
    /** maximum value for double/int */
1705
    double max;
1706
    /** default boo [0,1]l/double/int value */
1707
    double defval;
1708
    /**
1709
     * default string value (with optional semicolon delimited extra option-list
1710
     * i.e.   option1;option2;option3
1711
     * defval might select other then first argument as default
1712
     */
1713
    const char *defstr;
1714
#define FF_OPT_MAX_DEPTH 10
1715
} AVOption;
1716

    
1717
/**
1718
 * Parse option(s) and sets fields in passed structure
1719
 * @param strct        structure where the parsed results will be written
1720
 * @param list  list with AVOptions
1721
 * @param opts        string with options for parsing
1722
 */
1723
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1724

    
1725

    
1726
/**
1727
 * AVCodec.
1728
 */
1729
typedef struct AVCodec {
1730
    const char *name;
1731
    enum CodecType type;
1732
    int id;
1733
    int priv_data_size;
1734
    int (*init)(AVCodecContext *);
1735
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1736
    int (*close)(AVCodecContext *);
1737
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1738
                  uint8_t *buf, int buf_size);
1739
    int capabilities;
1740
    const AVOption *options;
1741
    struct AVCodec *next;
1742
    void (*flush)(AVCodecContext *);
1743
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1744
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1745
} AVCodec;
1746

    
1747
/**
1748
 * four components are given, that's all.
1749
 * the last component is alpha
1750
 */
1751
typedef struct AVPicture {
1752
    uint8_t *data[4];
1753
    int linesize[4];       ///< number of bytes per line
1754
} AVPicture;
1755

    
1756
/**
1757
 * AVPaletteControl
1758
 * This structure defines a method for communicating palette changes
1759
 * between and demuxer and a decoder.
1760
 */
1761
#define AVPALETTE_SIZE 1024
1762
#define AVPALETTE_COUNT 256
1763
typedef struct AVPaletteControl {
1764

    
1765
    /* demuxer sets this to 1 to indicate the palette has changed;
1766
     * decoder resets to 0 */
1767
    int palette_changed;
1768

    
1769
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1770
     * the individual palette components should be on a 8-bit scale; if
1771
     * the palette data comes from a IBM VGA native format, the component
1772
     * data is probably 6 bits in size and needs to be scaled */
1773
    unsigned int palette[AVPALETTE_COUNT];
1774

    
1775
} AVPaletteControl;
1776

    
1777
extern AVCodec ac3_encoder;
1778
extern AVCodec mp2_encoder;
1779
extern AVCodec mp3lame_encoder;
1780
extern AVCodec oggvorbis_encoder;
1781
extern AVCodec faac_encoder;
1782
extern AVCodec xvid_encoder;
1783
extern AVCodec mpeg1video_encoder;
1784
extern AVCodec mpeg2video_encoder;
1785
extern AVCodec h263_encoder;
1786
extern AVCodec h263p_encoder;
1787
extern AVCodec flv_encoder;
1788
extern AVCodec rv10_encoder;
1789
extern AVCodec rv20_encoder;
1790
extern AVCodec dvvideo_encoder;
1791
extern AVCodec mjpeg_encoder;
1792
extern AVCodec ljpeg_encoder;
1793
extern AVCodec mpeg4_encoder;
1794
extern AVCodec msmpeg4v1_encoder;
1795
extern AVCodec msmpeg4v2_encoder;
1796
extern AVCodec msmpeg4v3_encoder;
1797
extern AVCodec wmv1_encoder;
1798
extern AVCodec wmv2_encoder;
1799
extern AVCodec huffyuv_encoder;
1800
extern AVCodec h264_encoder;
1801
extern AVCodec asv1_encoder;
1802
extern AVCodec asv2_encoder;
1803
extern AVCodec vcr1_encoder;
1804
extern AVCodec ffv1_encoder;
1805
extern AVCodec snow_encoder;
1806
extern AVCodec mdec_encoder;
1807
extern AVCodec zlib_encoder;
1808
extern AVCodec sonic_encoder;
1809
extern AVCodec sonic_ls_encoder;
1810
extern AVCodec svq1_encoder;
1811

    
1812
extern AVCodec h263_decoder;
1813
extern AVCodec h261_decoder;
1814
extern AVCodec mpeg4_decoder;
1815
extern AVCodec msmpeg4v1_decoder;
1816
extern AVCodec msmpeg4v2_decoder;
1817
extern AVCodec msmpeg4v3_decoder;
1818
extern AVCodec wmv1_decoder;
1819
extern AVCodec wmv2_decoder;
1820
extern AVCodec mpeg1video_decoder;
1821
extern AVCodec mpeg2video_decoder;
1822
extern AVCodec mpegvideo_decoder;
1823
extern AVCodec mpeg_xvmc_decoder;
1824
extern AVCodec h263i_decoder;
1825
extern AVCodec flv_decoder;
1826
extern AVCodec rv10_decoder;
1827
extern AVCodec rv20_decoder;
1828
extern AVCodec svq1_decoder;
1829
extern AVCodec svq3_decoder;
1830
extern AVCodec dvvideo_decoder;
1831
extern AVCodec wmav1_decoder;
1832
extern AVCodec wmav2_decoder;
1833
extern AVCodec mjpeg_decoder;
1834
extern AVCodec mjpegb_decoder;
1835
extern AVCodec sp5x_decoder;
1836
extern AVCodec mp2_decoder;
1837
extern AVCodec mp3_decoder;
1838
extern AVCodec mace3_decoder;
1839
extern AVCodec mace6_decoder;
1840
extern AVCodec huffyuv_decoder;
1841
extern AVCodec oggvorbis_decoder;
1842
extern AVCodec cyuv_decoder;
1843
extern AVCodec h264_decoder;
1844
extern AVCodec indeo3_decoder;
1845
extern AVCodec vp3_decoder;
1846
extern AVCodec theora_decoder;
1847
extern AVCodec amr_nb_decoder;
1848
extern AVCodec amr_nb_encoder;
1849
extern AVCodec amr_wb_encoder;
1850
extern AVCodec amr_wb_decoder;
1851
extern AVCodec aac_decoder;
1852
extern AVCodec mpeg4aac_decoder;
1853
extern AVCodec asv1_decoder;
1854
extern AVCodec asv2_decoder;
1855
extern AVCodec vcr1_decoder;
1856
extern AVCodec cljr_decoder;
1857
extern AVCodec ffv1_decoder;
1858
extern AVCodec snow_decoder;
1859
extern AVCodec fourxm_decoder;
1860
extern AVCodec mdec_decoder;
1861
extern AVCodec roq_decoder;
1862
extern AVCodec interplay_video_decoder;
1863
extern AVCodec xan_wc3_decoder;
1864
extern AVCodec rpza_decoder;
1865
extern AVCodec cinepak_decoder;
1866
extern AVCodec msrle_decoder;
1867
extern AVCodec msvideo1_decoder;
1868
extern AVCodec vqa_decoder;
1869
extern AVCodec idcin_decoder;
1870
extern AVCodec eightbps_decoder;
1871
extern AVCodec smc_decoder;
1872
extern AVCodec flic_decoder;
1873
extern AVCodec vmdvideo_decoder;
1874
extern AVCodec vmdaudio_decoder;
1875
extern AVCodec truemotion1_decoder;
1876
extern AVCodec mszh_decoder;
1877
extern AVCodec zlib_decoder;
1878
extern AVCodec ra_144_decoder;
1879
extern AVCodec ra_288_decoder;
1880
extern AVCodec roq_dpcm_decoder;
1881
extern AVCodec interplay_dpcm_decoder;
1882
extern AVCodec xan_dpcm_decoder;
1883
extern AVCodec sol_dpcm_decoder;
1884
extern AVCodec sonic_decoder;
1885
extern AVCodec qtrle_decoder;
1886
extern AVCodec flac_decoder;
1887
extern AVCodec tscc_decoder;
1888
extern AVCodec ulti_decoder;
1889
extern AVCodec qdraw_decoder;
1890

    
1891
/* pcm codecs */
1892
#define PCM_CODEC(id, name) \
1893
extern AVCodec name ## _decoder; \
1894
extern AVCodec name ## _encoder
1895

    
1896
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1897
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1898
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1899
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1900
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1901
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1902
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1903
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1904

    
1905
/* adpcm codecs */
1906

    
1907
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1908
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1909
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1910
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1911
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1912
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1913
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1914
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1915
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1916
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1917
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1918
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1919

    
1920
#undef PCM_CODEC
1921

    
1922
/* dummy raw video codec */
1923
extern AVCodec rawvideo_encoder;
1924
extern AVCodec rawvideo_decoder;
1925

    
1926
/* the following codecs use external GPL libs */
1927
extern AVCodec ac3_decoder;
1928
extern AVCodec dts_decoder;
1929

    
1930
/* resample.c */
1931

    
1932
struct ReSampleContext;
1933
struct AVResampleContext;
1934

    
1935
typedef struct ReSampleContext ReSampleContext;
1936

    
1937
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1938
                                     int output_rate, int input_rate);
1939
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1940
void audio_resample_close(ReSampleContext *s);
1941

    
1942
struct AVResampleContext *av_resample_init(int out_rate, int in_rate);
1943
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
1944
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
1945
void av_resample_close(struct AVResampleContext *c);
1946

    
1947
/* YUV420 format is assumed ! */
1948

    
1949
struct ImgReSampleContext;
1950

    
1951
typedef struct ImgReSampleContext ImgReSampleContext;
1952

    
1953
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1954
                                      int input_width, int input_height);
1955

    
1956
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1957
                                      int iwidth, int iheight,
1958
                                      int topBand, int bottomBand,
1959
                                      int leftBand, int rightBand,
1960
                                      int padtop, int padbottom,
1961
                                      int padleft, int padright);
1962

    
1963

    
1964
void img_resample(ImgReSampleContext *s, 
1965
                  AVPicture *output, const AVPicture *input);
1966

    
1967
void img_resample_close(ImgReSampleContext *s);
1968

    
1969
/**
1970
 * Allocate memory for a picture.  Call avpicture_free to free it.
1971
 *
1972
 * @param picture the picture to be filled in.
1973
 * @param pix_fmt the format of the picture.
1974
 * @param width the width of the picture.
1975
 * @param height the height of the picture.
1976
 * @return 0 if successful, -1 if not.
1977
 */
1978
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1979

    
1980
/* Free a picture previously allocated by avpicture_alloc. */
1981
void avpicture_free(AVPicture *picture);
1982

    
1983
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1984
                   int pix_fmt, int width, int height);
1985
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1986
                     unsigned char *dest, int dest_size);
1987
int avpicture_get_size(int pix_fmt, int width, int height);
1988
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1989
const char *avcodec_get_pix_fmt_name(int pix_fmt);
1990
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
1991
enum PixelFormat avcodec_get_pix_fmt(const char* name);
1992

    
1993
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
1994
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
1995
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
1996
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
1997
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
1998
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1999

    
2000
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2001
                             int has_alpha);
2002
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2003
                              int has_alpha, int *loss_ptr);
2004

    
2005
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2006
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2007
int img_get_alpha_info(const AVPicture *src,
2008
                       int pix_fmt, int width, int height);
2009

    
2010
/* convert among pixel formats */
2011
int img_convert(AVPicture *dst, int dst_pix_fmt,
2012
                const AVPicture *src, int pix_fmt, 
2013
                int width, int height);
2014

    
2015
/* deinterlace a picture */
2016
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2017
                          int pix_fmt, int width, int height);
2018

    
2019
/* external high level API */
2020

    
2021
extern AVCodec *first_avcodec;
2022

    
2023
/* returns LIBAVCODEC_VERSION_INT constant */
2024
unsigned avcodec_version(void);
2025
/* returns LIBAVCODEC_BUILD constant */
2026
unsigned avcodec_build(void);
2027
void avcodec_init(void);
2028

    
2029
void register_avcodec(AVCodec *format);
2030
AVCodec *avcodec_find_encoder(enum CodecID id);
2031
AVCodec *avcodec_find_encoder_by_name(const char *name);
2032
AVCodec *avcodec_find_decoder(enum CodecID id);
2033
AVCodec *avcodec_find_decoder_by_name(const char *name);
2034
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2035

    
2036
void avcodec_get_context_defaults(AVCodecContext *s);
2037
AVCodecContext *avcodec_alloc_context(void);
2038
void avcodec_get_frame_defaults(AVFrame *pic);
2039
AVFrame *avcodec_alloc_frame(void);
2040

    
2041
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2042
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2043
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2044
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2045
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2046

    
2047
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2048
void avcodec_thread_free(AVCodecContext *s);
2049
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2050
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2051
//FIXME func typedef
2052

    
2053
/**
2054
 * opens / inits the AVCodecContext.
2055
 * not thread save!
2056
 */
2057
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2058

    
2059
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
2060
                         int *frame_size_ptr,
2061
                         uint8_t *buf, int buf_size);
2062
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
2063
                         int *got_picture_ptr,
2064
                         uint8_t *buf, int buf_size);
2065
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
2066
                        int *data_size_ptr,
2067
                        uint8_t *buf, int buf_size);
2068
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2069
                         const short *samples);
2070
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2071
                         const AVFrame *pict);
2072

    
2073
int avcodec_close(AVCodecContext *avctx);
2074

    
2075
void avcodec_register_all(void);
2076

    
2077
void avcodec_flush_buffers(AVCodecContext *avctx);
2078

    
2079
/* misc usefull functions */
2080

    
2081
/**
2082
 * returns a single letter to describe the picture type
2083
 */
2084
char av_get_pict_type_char(int pict_type);
2085

    
2086
/**
2087
 * reduce a fraction.
2088
 * this is usefull for framerate calculations
2089
 * @param max the maximum allowed for dst_nom & dst_den
2090
 * @return 1 if exact, 0 otherwise
2091
 */
2092
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2093

    
2094
/**
2095
 * rescale a 64bit integer with rounding to nearest.
2096
 * a simple a*b/c isnt possible as it can overflow
2097
 */
2098
int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2099

    
2100
/**
2101
 * rescale a 64bit integer with specified rounding.
2102
 * a simple a*b/c isnt possible as it can overflow
2103
 */
2104
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
2105

    
2106
/**
2107
 * Interface for 0.5.0 version
2108
 *
2109
 * do not even think about it's usage for this moment
2110
 */
2111

    
2112
typedef struct {
2113
    /// compressed size used from given memory buffer
2114
    int size;
2115
    /// I/P/B frame type
2116
    int frame_type;
2117
} avc_enc_result_t;
2118

    
2119
/**
2120
 * Commands
2121
 * order can't be changed - once it was defined
2122
 */
2123
typedef enum {
2124
    // general commands
2125
    AVC_OPEN_BY_NAME = 0xACA000,
2126
    AVC_OPEN_BY_CODEC_ID,
2127
    AVC_OPEN_BY_FOURCC,
2128
    AVC_CLOSE,
2129

    
2130
    AVC_FLUSH,
2131
    // pin - struct { uint8_t* src, uint_t src_size }
2132
    // pout - struct { AVPicture* img, consumed_bytes,
2133
    AVC_DECODE,
2134
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
2135
    // pout - uint_t used_from_dest_size
2136
    AVC_ENCODE, 
2137

    
2138
    // query/get video commands
2139
    AVC_GET_VERSION = 0xACB000,
2140
    AVC_GET_WIDTH,
2141
    AVC_GET_HEIGHT,
2142
    AVC_GET_DELAY,
2143
    AVC_GET_QUANT_TABLE,
2144
    // ...
2145

    
2146
    // query/get audio commands
2147
    AVC_GET_FRAME_SIZE = 0xABC000,
2148

    
2149
    // maybe define some simple structure which
2150
    // might be passed to the user - but they can't
2151
    // contain any codec specific parts and these
2152
    // calls are usualy necessary only few times
2153

    
2154
    // set video commands
2155
    AVC_SET_WIDTH = 0xACD000,
2156
    AVC_SET_HEIGHT,
2157

    
2158
    // set video encoding commands
2159
    AVC_SET_FRAME_RATE = 0xACD800,
2160
    AVC_SET_QUALITY,
2161
    AVC_SET_HURRY_UP,
2162

    
2163
    // set audio commands
2164
    AVC_SET_SAMPLE_RATE = 0xACE000,
2165
    AVC_SET_CHANNELS,
2166

    
2167
} avc_cmd_t;
2168

    
2169
/**
2170
 * \param handle  allocated private structure by libavcodec
2171
 *                for initialization pass NULL - will be returned pout
2172
 *                user is supposed to know nothing about its structure
2173
 * \param cmd     type of operation to be performed
2174
 * \param pint    input parameter
2175
 * \param pout    output parameter
2176
 *
2177
 * \returns  command status - eventually for query command it might return
2178
 * integer resulting value
2179
 */
2180
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2181

    
2182
/* frame parsing */
2183
typedef struct AVCodecParserContext {
2184
    void *priv_data;
2185
    struct AVCodecParser *parser;
2186
    int64_t frame_offset; /* offset of the current frame */
2187
    int64_t cur_offset; /* current offset 
2188
                           (incremented by each av_parser_parse()) */
2189
    int64_t last_frame_offset; /* offset of the last frame */
2190
    /* video info */
2191
    int pict_type; /* XXX: put it back in AVCodecContext */
2192
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2193
    int64_t pts;     /* pts of the current frame */
2194
    int64_t dts;     /* dts of the current frame */
2195

    
2196
    /* private data */
2197
    int64_t last_pts;
2198
    int64_t last_dts;
2199
    int fetch_timestamp;
2200

    
2201
#define AV_PARSER_PTS_NB 4
2202
    int cur_frame_start_index;
2203
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2204
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2205
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2206
} AVCodecParserContext;
2207

    
2208
typedef struct AVCodecParser {
2209
    int codec_ids[3]; /* several codec IDs are permitted */
2210
    int priv_data_size;
2211
    int (*parser_init)(AVCodecParserContext *s);
2212
    int (*parser_parse)(AVCodecParserContext *s, 
2213
                        AVCodecContext *avctx,
2214
                        uint8_t **poutbuf, int *poutbuf_size, 
2215
                        const uint8_t *buf, int buf_size);
2216
    void (*parser_close)(AVCodecParserContext *s);
2217
    struct AVCodecParser *next;
2218
} AVCodecParser;
2219

    
2220
extern AVCodecParser *av_first_parser;
2221

    
2222
void av_register_codec_parser(AVCodecParser *parser);
2223
AVCodecParserContext *av_parser_init(int codec_id);
2224
int av_parser_parse(AVCodecParserContext *s, 
2225
                    AVCodecContext *avctx,
2226
                    uint8_t **poutbuf, int *poutbuf_size, 
2227
                    const uint8_t *buf, int buf_size,
2228
                    int64_t pts, int64_t dts);
2229
void av_parser_close(AVCodecParserContext *s);
2230

    
2231
extern AVCodecParser mpegvideo_parser;
2232
extern AVCodecParser mpeg4video_parser;
2233
extern AVCodecParser h261_parser;
2234
extern AVCodecParser h263_parser;
2235
extern AVCodecParser h264_parser;
2236
extern AVCodecParser mpegaudio_parser;
2237
extern AVCodecParser ac3_parser;
2238

    
2239
/* memory */
2240
void *av_malloc(unsigned int size);
2241
void *av_mallocz(unsigned int size);
2242
void *av_realloc(void *ptr, unsigned int size);
2243
void av_free(void *ptr);
2244
char *av_strdup(const char *s);
2245
void av_freep(void *ptr);
2246
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2247
/* for static data only */
2248
/* call av_free_static to release all staticaly allocated tables */
2249
void av_free_static(void);
2250
void *av_mallocz_static(unsigned int size);
2251

    
2252
/* add by bero : in adx.c */
2253
int is_adx(const unsigned char *buf,size_t bufsize);
2254

    
2255
void img_copy(AVPicture *dst, const AVPicture *src,
2256
              int pix_fmt, int width, int height);
2257

    
2258
/* av_log API */
2259

    
2260
#include <stdarg.h>
2261

    
2262
#define AV_LOG_QUIET -1
2263
#define AV_LOG_ERROR 0
2264
#define AV_LOG_INFO 1
2265
#define AV_LOG_DEBUG 2
2266

    
2267
#ifdef __GNUC__
2268
extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2269
#else
2270
extern void av_log(void*, int level, const char *fmt, ...);
2271
#endif
2272

    
2273
extern void av_vlog(void*, int level, const char *fmt, va_list);
2274
extern int av_log_get_level(void);
2275
extern void av_log_set_level(int);
2276
extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2277

    
2278
/* endian macros */
2279
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2280
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2281
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2282
                   (((uint8_t*)(x))[1] << 16) | \
2283
                   (((uint8_t*)(x))[2] << 8) | \
2284
                    ((uint8_t*)(x))[3])
2285
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2286
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2287
                   (((uint8_t*)(x))[2] << 16) | \
2288
                   (((uint8_t*)(x))[1] << 8) | \
2289
                    ((uint8_t*)(x))[0])
2290
#endif
2291

    
2292
#ifdef __cplusplus
2293
}
2294
#endif
2295

    
2296
#endif /* AVCODEC_H */