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#ifndef AVCODEC_H
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#define AVCODEC_H
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/**
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 * @file avcodec.h
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 * external api header.
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 */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "common.h"
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#include "rational.h"
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#include <sys/types.h> /* size_t */
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#define FFMPEG_VERSION_INT     0x000408
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#define FFMPEG_VERSION         "0.4.8"
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#define LIBAVCODEC_BUILD       4703
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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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enum CodecID {
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    CODEC_ID_NONE, 
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    CODEC_ID_MPEG1VIDEO,
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    CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
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    CODEC_ID_MPEG2VIDEO_XVMC,
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    CODEC_ID_H263,
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    CODEC_ID_RV10,
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    CODEC_ID_RV20,
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    CODEC_ID_MP2,
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    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
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    CODEC_ID_VORBIS,
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    CODEC_ID_AC3,
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    CODEC_ID_MJPEG,
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    CODEC_ID_MJPEGB,
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    CODEC_ID_LJPEG,
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    CODEC_ID_SP5X,
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    CODEC_ID_MPEG4,
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    CODEC_ID_RAWVIDEO,
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    CODEC_ID_MSMPEG4V1,
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    CODEC_ID_MSMPEG4V2,
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    CODEC_ID_MSMPEG4V3,
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    CODEC_ID_WMV1,
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    CODEC_ID_WMV2,
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    CODEC_ID_H263P,
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    CODEC_ID_H263I,
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    CODEC_ID_FLV1,
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    CODEC_ID_SVQ1,
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    CODEC_ID_SVQ3,
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    CODEC_ID_DVVIDEO,
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    CODEC_ID_DVAUDIO,
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    CODEC_ID_WMAV1,
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    CODEC_ID_WMAV2,
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    CODEC_ID_MACE3,
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    CODEC_ID_MACE6,
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    CODEC_ID_HUFFYUV,
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    CODEC_ID_CYUV,
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    CODEC_ID_H264,
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    CODEC_ID_INDEO3,
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    CODEC_ID_VP3,
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    CODEC_ID_THEORA,
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    CODEC_ID_AAC,
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    CODEC_ID_MPEG4AAC,
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    CODEC_ID_ASV1,
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    CODEC_ID_ASV2,
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    CODEC_ID_FFV1,
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    CODEC_ID_4XM,
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    CODEC_ID_VCR1,
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    CODEC_ID_CLJR,
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    CODEC_ID_MDEC,
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    CODEC_ID_ROQ,
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    CODEC_ID_INTERPLAY_VIDEO,
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    CODEC_ID_XAN_WC3,
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    CODEC_ID_XAN_WC4,
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    CODEC_ID_RPZA,
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    CODEC_ID_CINEPAK,
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    CODEC_ID_WS_VQA,
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    CODEC_ID_MSRLE,
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    CODEC_ID_MSVIDEO1,
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    CODEC_ID_IDCIN,
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    CODEC_ID_8BPS,
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    CODEC_ID_SMC,
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    CODEC_ID_FLIC,
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    CODEC_ID_TRUEMOTION1,
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    CODEC_ID_VMDVIDEO,
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    CODEC_ID_VMDAUDIO,
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    CODEC_ID_MSZH,
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    CODEC_ID_ZLIB,
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    CODEC_ID_QTRLE,
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    /* various pcm "codecs" */
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    CODEC_ID_PCM_S16LE,
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    CODEC_ID_PCM_S16BE,
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    CODEC_ID_PCM_U16LE,
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    CODEC_ID_PCM_U16BE,
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    CODEC_ID_PCM_S8,
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    CODEC_ID_PCM_U8,
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    CODEC_ID_PCM_MULAW,
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    CODEC_ID_PCM_ALAW,
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    /* various adpcm codecs */
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    CODEC_ID_ADPCM_IMA_QT,
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    CODEC_ID_ADPCM_IMA_WAV,
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    CODEC_ID_ADPCM_IMA_DK3,
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    CODEC_ID_ADPCM_IMA_DK4,
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    CODEC_ID_ADPCM_IMA_WS,
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    CODEC_ID_ADPCM_IMA_SMJPEG,
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    CODEC_ID_ADPCM_MS,
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    CODEC_ID_ADPCM_4XM,
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    CODEC_ID_ADPCM_XA,
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    CODEC_ID_ADPCM_ADX,
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    CODEC_ID_ADPCM_EA,
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    CODEC_ID_ADPCM_G726,
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        /* AMR */
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    CODEC_ID_AMR_NB,
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    CODEC_ID_AMR_WB,
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    /* RealAudio codecs*/
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    CODEC_ID_RA_144,
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    CODEC_ID_RA_288,
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    /* various DPCM codecs */
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    CODEC_ID_ROQ_DPCM,
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    CODEC_ID_INTERPLAY_DPCM,
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    CODEC_ID_XAN_DPCM,
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    CODEC_ID_FLAC,
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    CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
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                         stream (only used by libavformat) */
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};
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/* CODEC_ID_MP3LAME is absolete */
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#define CODEC_ID_MP3LAME CODEC_ID_MP3
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enum CodecType {
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    CODEC_TYPE_UNKNOWN = -1,
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    CODEC_TYPE_VIDEO,
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    CODEC_TYPE_AUDIO,
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    CODEC_TYPE_DATA,
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};
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/**
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 * Pixel format. Notes: 
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 *
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 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
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 * color is put together as:
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 *  (A << 24) | (R << 16) | (G << 8) | B
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 * This is stored as BGRA on little endian CPU architectures and ARGB on
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 * big endian CPUs.
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 *
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 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
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 * image data is stored in AVFrame.data[0]. The palette is transported in
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 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
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 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
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 * also endian-specific). Note also that the individual RGB palette
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 * components stored in AVFrame.data[1] should be in the range 0..255.
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 * This is important as many custom PAL8 video codecs that were designed
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 * to run on the IBM VGA graphics adapter use 6-bit palette components.
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 */
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enum PixelFormat {
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    PIX_FMT_YUV420P,   ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
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    PIX_FMT_YUV422,    
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    PIX_FMT_RGB24,     ///< Packed pixel, 3 bytes per pixel, RGBRGB...
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    PIX_FMT_BGR24,     ///< Packed pixel, 3 bytes per pixel, BGRBGR...
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    PIX_FMT_YUV422P,   ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
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    PIX_FMT_YUV444P,   ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
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    PIX_FMT_RGBA32,    ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
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    PIX_FMT_YUV410P,   ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
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    PIX_FMT_YUV411P,   ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
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    PIX_FMT_RGB565,    ///< always stored in cpu endianness 
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    PIX_FMT_RGB555,    ///< always stored in cpu endianness, most significant bit to 1 
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    PIX_FMT_GRAY8,
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    PIX_FMT_MONOWHITE, ///< 0 is white 
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    PIX_FMT_MONOBLACK, ///< 0 is black 
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    PIX_FMT_PAL8,      ///< 8 bit with RGBA palette 
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    PIX_FMT_YUVJ420P,  ///< Planar YUV 4:2:0 full scale (jpeg)
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    PIX_FMT_YUVJ422P,  ///< Planar YUV 4:2:2 full scale (jpeg)
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    PIX_FMT_YUVJ444P,  ///< Planar YUV 4:4:4 full scale (jpeg)
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    PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
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    PIX_FMT_XVMC_MPEG2_IDCT,
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    PIX_FMT_NB,
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};
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/* currently unused, may be used if 24/32 bits samples ever supported */
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enum SampleFormat {
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    SAMPLE_FMT_S16 = 0,         ///< signed 16 bits 
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};
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/* in bytes */
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#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
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/**
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 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
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 * this is mainly needed because some optimized bitstream readers read 
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 * 32 or 64 bit at once and could read over the end<br>
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 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
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 * MPEG bitstreams could cause overread and segfault
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 */
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#define FF_INPUT_BUFFER_PADDING_SIZE 8
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/* motion estimation type, EPZS by default */
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enum Motion_Est_ID {
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    ME_ZERO = 1,
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    ME_FULL,
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    ME_LOG,
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    ME_PHODS,
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    ME_EPZS,
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    ME_X1
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};
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typedef struct RcOverride{
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    int start_frame;
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    int end_frame;
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    int qscale; // if this is 0 then quality_factor will be used instead
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    float quality_factor;
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} RcOverride;
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/* only for ME compatiblity with old apps */
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extern int motion_estimation_method;
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#define FF_MAX_B_FRAMES 8
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/* encoding support
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   these flags can be passed in AVCodecContext.flags before initing 
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   Note: note not everything is supported yet 
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*/
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#define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale 
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#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / Advanced prediction for H263
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#define CODEC_FLAG_QPEL   0x0010  ///< use qpel MC 
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#define CODEC_FLAG_GMC    0x0020  ///< use GMC 
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#define CODEC_FLAG_MV0    0x0040  ///< always try a MB with MV=<0,0> 
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#define CODEC_FLAG_PART   0x0080  ///< use data partitioning 
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/* parent program gurantees that the input for b-frame containing streams is not written to 
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   for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
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#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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#define CODEC_FLAG_PASS1 0x0200   ///< use internal 2pass ratecontrol in first  pass mode 
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#define CODEC_FLAG_PASS2 0x0400   ///< use internal 2pass ratecontrol in second pass mode 
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#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg) 
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#define CODEC_FLAG_GRAY  0x2000   ///< only decode/encode grayscale 
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#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges 
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#define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding 
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#define CODEC_FLAG_TRUNCATED  0x00010000 /** input bitstream might be truncated at a random location instead 
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                                            of only at frame boundaries */
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#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< normalize adaptive quantization 
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#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct 
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#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< force low delay
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#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< use alternate scan 
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#define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< use trellis quantization 
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#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< place global headers in extradata instead of every keyframe 
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#define CODEC_FLAG_BITEXACT       0x00800000 ///< use only bitexact stuff (except (i)dct) 
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/* Fx : Flag for h263+ extra options */
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#define CODEC_FLAG_H263P_AIC      0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
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#define CODEC_FLAG_AC_PRED        0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
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#define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector  
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#define CODEC_FLAG_CBP_RD         0x04000000 ///< use rate distortion optimization for cbp
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#define CODEC_FLAG_QP_RD          0x08000000 ///< use rate distortion optimization for qp selectioon
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#define CODEC_FLAG_H263P_AIV      0x00000008 ///< H263 Alternative inter vlc
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#define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
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#define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
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#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
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#define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
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#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
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#define CODEC_FLAG_CLOSED_GOP     0x80000000
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/* Unsupported options :
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 *                 Syntax Arithmetic coding (SAC)
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 *                 Reference Picture Selection
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 *                 Independant Segment Decoding */
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/* /Fx */
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/* codec capabilities */
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#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback 
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/**
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 * Codec uses get_buffer() for allocating buffers.
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 * direct rendering method 1
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 */
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#define CODEC_CAP_DR1             0x0002
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/* if 'parse_only' field is true, then avcodec_parse_frame() can be
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   used */
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#define CODEC_CAP_PARSE_ONLY      0x0004
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#define CODEC_CAP_TRUNCATED       0x0008
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//the following defines might change, so dont expect compatibility if u use them
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#define MB_TYPE_INTRA4x4   0x0001
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#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
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#define MB_TYPE_INTRA_PCM  0x0004 //FIXME h264 specific
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#define MB_TYPE_16x16      0x0008
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#define MB_TYPE_16x8       0x0010
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#define MB_TYPE_8x16       0x0020
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#define MB_TYPE_8x8        0x0040
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#define MB_TYPE_INTERLACED 0x0080
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#define MB_TYPE_DIRECT2     0x0100 //FIXME
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#define MB_TYPE_ACPRED     0x0200
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#define MB_TYPE_GMC        0x0400
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#define MB_TYPE_SKIP       0x0800
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#define MB_TYPE_P0L0       0x1000
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#define MB_TYPE_P1L0       0x2000
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#define MB_TYPE_P0L1       0x4000
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#define MB_TYPE_P1L1       0x8000
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#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
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#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
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#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
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#define MB_TYPE_QUANT      0x00010000
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#define MB_TYPE_CBP        0x00020000
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//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
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/**
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 * Pan Scan area.
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 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
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 */
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typedef struct AVPanScan{
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    /**
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     * id.
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     * - encoding: set by user.
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     * - decoding: set by lavc
325
     */
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    int id;
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    /**
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     * width and height in 1/16 pel
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     * - encoding: set by user.
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     * - decoding: set by lavc
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     */
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    int width;
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    int height;
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    /**
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     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
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     * - encoding: set by user.
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     * - decoding: set by lavc
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     */
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    int16_t position[3][2];
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}AVPanScan;
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#define FF_COMMON_FRAME \
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    /**\
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     * pointer to the picture planes.\
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     * this might be different from the first allocated byte\
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     * - encoding: \
349
     * - decoding: \
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     */\
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    uint8_t *data[4];\
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    int linesize[4];\
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    /**\
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     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
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     * this isnt used by lavc unless the default get/release_buffer() is used\
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     * - encoding: \
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     * - decoding: \
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     */\
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    uint8_t *base[4];\
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    /**\
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     * 1 -> keyframe, 0-> not\
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     * - encoding: set by lavc\
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     * - decoding: set by lavc\
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     */\
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    int key_frame;\
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\
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    /**\
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     * picture type of the frame, see ?_TYPE below.\
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     * - encoding: set by lavc for coded_picture (and set by user for input)\
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     * - decoding: set by lavc\
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     */\
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    int pict_type;\
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\
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    /**\
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     * presentation timestamp in micro seconds (time when frame should be shown to user)\
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     * if 0 then the frame_rate will be used as reference\
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     * - encoding: MUST be set by user\
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     * - decoding: set by lavc\
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     */\
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    int64_t pts;\
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\
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    /**\
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     * picture number in bitstream order.\
384
     * - encoding: set by\
385
     * - decoding: set by lavc\
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     */\
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    int coded_picture_number;\
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    /**\
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     * picture number in display order.\
390
     * - encoding: set by\
391
     * - decoding: set by lavc\
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     */\
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    int display_picture_number;\
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\
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    /**\
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     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
397
     * - encoding: set by lavc for coded_picture (and set by user for input)\
398
     * - decoding: set by lavc\
399
     */\
400
    int quality; \
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\
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    /**\
403
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
404
     * set to INT_MAX if the buffer has not been used yet \
405
     * - encoding: unused\
406
     * - decoding: MUST be set by get_buffer()\
407
     */\
408
    int age;\
409
\
410
    /**\
411
     * is this picture used as reference\
412
     * - encoding: unused\
413
     * - decoding: set by lavc (before get_buffer() call))\
414
     */\
415
    int reference;\
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\
417
    /**\
418
     * QP table\
419
     * - encoding: unused\
420
     * - decoding: set by lavc\
421
     */\
422
    int8_t *qscale_table;\
423
    /**\
424
     * QP store stride\
425
     * - encoding: unused\
426
     * - decoding: set by lavc\
427
     */\
428
    int qstride;\
429
\
430
    /**\
431
     * mbskip_table[mb]>=1 if MB didnt change\
432
     * stride= mb_width = (width+15)>>4\
433
     * - encoding: unused\
434
     * - decoding: set by lavc\
435
     */\
436
    uint8_t *mbskip_table;\
437
\
438
    /**\
439
     * Motion vector table\
440
     * - encoding: unused\
441
     * - decoding: set by lavc\
442
     */\
443
    int16_t (*motion_val[2])[2];\
444
\
445
    /**\
446
     * Macroblock type table\
447
     * mb_type_base + mb_width + 2\
448
     * - encoding: unused\
449
     * - decoding: set by lavc\
450
     */\
451
    uint32_t *mb_type;\
452
\
453
    /**\
454
     * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
455
     * - encoding: unused\
456
     * - decoding: set by lavc\
457
     */\
458
    uint8_t motion_subsample_log2;\
459
\
460
    /**\
461
     * for some private data of the user\
462
     * - encoding: unused\
463
     * - decoding: set by user\
464
     */\
465
    void *opaque;\
466
\
467
    /**\
468
     * error\
469
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
470
     * - decoding: unused\
471
     */\
472
    uint64_t error[4];\
473
\
474
    /**\
475
     * type of the buffer (to keep track of who has to dealloc data[*])\
476
     * - encoding: set by the one who allocs it\
477
     * - decoding: set by the one who allocs it\
478
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
479
     */\
480
    int type;\
481
    \
482
    /**\
483
     * when decoding, this signal how much the picture must be delayed.\
484
     * extra_delay = repeat_pict / (2*fps)\
485
     * - encoding: unused\
486
     * - decoding: set by lavc\
487
     */\
488
    int repeat_pict;\
489
    \
490
    /**\
491
     * \
492
     */\
493
    int qscale_type;\
494
    \
495
    /**\
496
     * The content of the picture is interlaced.\
497
     * - encoding: set by user\
498
     * - decoding: set by lavc (default 0)\
499
     */\
500
    int interlaced_frame;\
501
    \
502
    /**\
503
     * if the content is interlaced, is top field displayed first.\
504
     * - encoding: set by user\
505
     * - decoding: set by lavc\
506
     */\
507
    int top_field_first;\
508
    \
509
    /**\
510
     * Pan scan.\
511
     * - encoding: set by user\
512
     * - decoding: set by lavc\
513
     */\
514
    AVPanScan *pan_scan;\
515
    \
516
    /**\
517
     * tell user application that palette has changed from previous frame.\
518
     * - encoding: ??? (no palette-enabled encoder yet)\
519
     * - decoding: set by lavc (default 0)\
520
     */\
521
    int palette_has_changed;\
522
    \
523
    /**\
524
     * Codec suggestion on buffer type if != 0\
525
     * - encoding: unused\
526
     * - decoding: set by lavc (before get_buffer() call))\
527
     */\
528
    int buffer_hints;\
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530
#define FF_QSCALE_TYPE_MPEG1        0
531
#define FF_QSCALE_TYPE_MPEG2        1
532

    
533
#define FF_BUFFER_TYPE_INTERNAL 1
534
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
535
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base)
536
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
537

    
538

    
539
#define FF_I_TYPE 1 // Intra
540
#define FF_P_TYPE 2 // Predicted
541
#define FF_B_TYPE 3 // Bi-dir predicted
542
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
543
#define FF_SI_TYPE 5
544
#define FF_SP_TYPE 6
545

    
546
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
547
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
548
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
549
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
550

    
551
/**
552
 * Audio Video Frame.
553
 */
554
typedef struct AVFrame {
555
    FF_COMMON_FRAME
556
} AVFrame;
557

    
558
#define DEFAULT_FRAME_RATE_BASE 1001000
559

    
560
/**
561
 * main external api structure.
562
 */
563
typedef struct AVCodecContext {
564
    /**
565
     * the average bitrate.
566
     * - encoding: set by user. unused for constant quantizer encoding
567
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
568
     */
569
    int bit_rate;
570

    
571
    /**
572
     * number of bits the bitstream is allowed to diverge from the reference.
573
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
574
     * - encoding: set by user. unused for constant quantizer encoding
575
     * - decoding: unused
576
     */
577
    int bit_rate_tolerance; 
578

    
579
    /**
580
     * CODEC_FLAG_*.
581
     * - encoding: set by user.
582
     * - decoding: set by user.
583
     */
584
    int flags;
585

    
586
    /**
587
     * some codecs needs additionnal format info. It is stored here
588
     * - encoding: set by user. 
589
     * - decoding: set by lavc. (FIXME is this ok?)
590
     */
591
    int sub_id;
592

    
593
    /**
594
     * motion estimation algorithm used for video coding.
595
     * - encoding: MUST be set by user.
596
     * - decoding: unused
597
     */
598
    int me_method;
599

    
600
    /**
601
     * some codecs need / can use extra-data like huffman tables.
602
     * mjpeg: huffman tables
603
     * rv10: additional flags
604
     * mpeg4: global headers (they can be in the bitstream or here)
605
     * - encoding: set/allocated/freed by lavc.
606
     * - decoding: set/allocated/freed by user.
607
     */
608
    void *extradata;
609
    int extradata_size;
610
    
611
    /* video only */
612
    /**
613
     * frames per sec multiplied by frame_rate_base.
614
     * for variable fps this is the precission, so if the timestamps 
615
     * can be specified in msec precssion then this is 1000*frame_rate_base
616
     * - encoding: MUST be set by user
617
     * - decoding: set by lavc. 0 or the frame_rate if available
618
     */
619
    int frame_rate;
620
    
621
    /**
622
     * width / height.
623
     * - encoding: MUST be set by user. 
624
     * - decoding: set by user if known, codec should override / dynamically change if needed
625
     */
626
    int width, height;
627
    
628
#define FF_ASPECT_EXTENDED 15
629

    
630
    /**
631
     * the number of pictures in a group of pitures, or 0 for intra_only.
632
     * - encoding: set by user.
633
     * - decoding: unused
634
     */
635
    int gop_size;
636

    
637
    /**
638
     * pixel format, see PIX_FMT_xxx.
639
     * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
640
     *                    conversion is in order. This only works for
641
     *                    codecs with one supported pix_fmt, we should
642
     *                    do something for a generic case as well.
643
     * - decoding: set by lavc.
644
     */
645
    enum PixelFormat pix_fmt;
646
 
647
    /**
648
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
649
     * has to read frames at native frame rate.
650
     * - encoding: set by user.
651
     * - decoding: unused.
652
     */
653
    int rate_emu;
654
       
655
    /**
656
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
657
     * decoder to draw an horizontal band. It improve cache usage. Not
658
     * all codecs can do that. You must check the codec capabilities
659
     * before
660
     * - encoding: unused
661
     * - decoding: set by user.
662
     * @param height the height of the slice
663
     * @param y the y position of the slice
664
     * @param type 1->top field, 2->bottom field, 3->frame
665
     * @param offset offset into the AVFrame.data from which the slice should be read
666
     */
667
    void (*draw_horiz_band)(struct AVCodecContext *s,
668
                            const AVFrame *src, int offset[4],
669
                            int y, int type, int height);
670

    
671
    /* audio only */
672
    int sample_rate; ///< samples per sec 
673
    int channels;
674
    int sample_fmt;  ///< sample format, currenly unused 
675

    
676
    /* the following data should not be initialized */
677
    int frame_size;     ///< in samples, initialized when calling 'init' 
678
    int frame_number;   ///< audio or video frame number 
679
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
680
    
681
    /**
682
     * number of frames the decoded output will be delayed relative to 
683
     * the encoded input.
684
     * - encoding: set by lavc.
685
     * - decoding: unused
686
     */
687
    int delay;
688
    
689
    /* - encoding parameters */
690
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
691
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
692
    
693
    /**
694
     * minimum quantizer.
695
     * - encoding: set by user.
696
     * - decoding: unused
697
     */
698
    int qmin;
699

    
700
    /**
701
     * maximum quantizer.
702
     * - encoding: set by user.
703
     * - decoding: unused
704
     */
705
    int qmax;
706

    
707
    /**
708
     * maximum quantizer difference etween frames.
709
     * - encoding: set by user.
710
     * - decoding: unused
711
     */
712
    int max_qdiff;
713

    
714
    /**
715
     * maximum number of b frames between non b frames.
716
     * note: the output will be delayed by max_b_frames+1 relative to the input
717
     * - encoding: set by user.
718
     * - decoding: unused
719
     */
720
    int max_b_frames;
721

    
722
    /**
723
     * qscale factor between ip and b frames.
724
     * - encoding: set by user.
725
     * - decoding: unused
726
     */
727
    float b_quant_factor;
728
    
729
    /** obsolete FIXME remove */
730
    int rc_strategy;
731
    int b_frame_strategy;
732

    
733
    /**
734
     * hurry up amount.
735
     * - encoding: unused
736
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
737
     */
738
    int hurry_up;
739
    
740
    struct AVCodec *codec;
741
    
742
    void *priv_data;
743

    
744
    /* unused, FIXME remove*/
745
    int rtp_mode;
746
    
747
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
748
                            /* do it's best to deliver a chunk with size    */
749
                            /* below rtp_payload_size, the chunk will start */
750
                            /* with a start code on some codecs like H.263  */
751
                            /* This doesn't take account of any particular  */
752
                            /* headers inside the transmited RTP payload    */
753

    
754
    
755
    /* The RTP callcack: This function is called  */
756
    /* every time the encoder as a packet to send */
757
    /* Depends on the encoder if the data starts  */
758
    /* with a Start Code (it should) H.263 does   */
759
    void (*rtp_callback)(void *data, int size, int packet_number); 
760

    
761
    /* statistics, used for 2-pass encoding */
762
    int mv_bits;
763
    int header_bits;
764
    int i_tex_bits;
765
    int p_tex_bits;
766
    int i_count;
767
    int p_count;
768
    int skip_count;
769
    int misc_bits;
770
    
771
    /**
772
     * number of bits used for the previously encoded frame.
773
     * - encoding: set by lavc
774
     * - decoding: unused
775
     */
776
    int frame_bits;
777

    
778
    /**
779
     * private data of the user, can be used to carry app specific stuff.
780
     * - encoding: set by user
781
     * - decoding: set by user
782
     */
783
    void *opaque;
784

    
785
    char codec_name[32];
786
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
787
    enum CodecID codec_id; /* see CODEC_ID_xxx */
788
    
789
    /**
790
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
791
     * this is used to workaround some encoder bugs
792
     * - encoding: set by user, if not then the default based on codec_id will be used
793
     * - decoding: set by user, will be converted to upper case by lavc during init
794
     */
795
    unsigned int codec_tag;
796
    
797
    /**
798
     * workaround bugs in encoders which sometimes cannot be detected automatically.
799
     * - encoding: unused
800
     * - decoding: set by user
801
     */
802
    int workaround_bugs;
803
#define FF_BUG_AUTODETECT       1  ///< autodetection
804
#define FF_BUG_OLD_MSMPEG4      2
805
#define FF_BUG_XVID_ILACE       4
806
#define FF_BUG_UMP4             8
807
#define FF_BUG_NO_PADDING       16
808
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
809
#define FF_BUG_QPEL_CHROMA      64
810
#define FF_BUG_STD_QPEL         128
811
#define FF_BUG_QPEL_CHROMA2     256
812
#define FF_BUG_DIRECT_BLOCKSIZE 512
813
#define FF_BUG_EDGE             1024
814
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
815
        
816
    /**
817
     * luma single coeff elimination threshold.
818
     * - encoding: set by user
819
     * - decoding: unused
820
     */
821
    int luma_elim_threshold;
822
    
823
    /**
824
     * chroma single coeff elimination threshold.
825
     * - encoding: set by user
826
     * - decoding: unused
827
     */
828
    int chroma_elim_threshold;
829
    
830
    /**
831
     * strictly follow the std (MPEG4, ...).
832
     * - encoding: set by user
833
     * - decoding: unused
834
     */
835
    int strict_std_compliance;
836
    
837
    /**
838
     * qscale offset between ip and b frames.
839
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
840
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
841
     * - encoding: set by user.
842
     * - decoding: unused
843
     */
844
    float b_quant_offset;
845
    
846
    /**
847
     * error resilience higher values will detect more errors but may missdetect
848
     * some more or less valid parts as errors.
849
     * - encoding: unused
850
     * - decoding: set by user
851
     */
852
    int error_resilience;
853
#define FF_ER_CAREFULL        1
854
#define FF_ER_COMPLIANT       2
855
#define FF_ER_AGGRESSIVE      3
856
#define FF_ER_VERY_AGGRESSIVE 4
857
    
858
    /**
859
     * called at the beginning of each frame to get a buffer for it.
860
     * if pic.reference is set then the frame will be read later by lavc
861
     * width and height should be rounded up to the next multiple of 16
862
     * - encoding: unused
863
     * - decoding: set by lavc, user can override
864
     */
865
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
866
    
867
    /**
868
     * called to release buffers which where allocated with get_buffer.
869
     * a released buffer can be reused in get_buffer()
870
     * pic.data[*] must be set to NULL
871
     * - encoding: unused
872
     * - decoding: set by lavc, user can override
873
     */
874
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
875

    
876
    /**
877
     * is 1 if the decoded stream contains b frames, 0 otherwise.
878
     * - encoding: unused
879
     * - decoding: set by lavc
880
     */
881
    int has_b_frames;
882
    
883
    int block_align; ///< used by some WAV based audio codecs
884
    
885
    int parse_only; /* - decoding only: if true, only parsing is done
886
                       (function avcodec_parse_frame()). The frame
887
                       data is returned. Only MPEG codecs support this now. */
888
    
889
    /**
890
     * 0-> h263 quant 1-> mpeg quant.
891
     * - encoding: set by user.
892
     * - decoding: unused
893
     */
894
    int mpeg_quant;
895
    
896
    /**
897
     * pass1 encoding statistics output buffer.
898
     * - encoding: set by lavc
899
     * - decoding: unused
900
     */
901
    char *stats_out;
902
    
903
    /**
904
     * pass2 encoding statistics input buffer.
905
     * concatenated stuff from stats_out of pass1 should be placed here
906
     * - encoding: allocated/set/freed by user
907
     * - decoding: unused
908
     */
909
    char *stats_in;
910
    
911
    /**
912
     * ratecontrol qmin qmax limiting method.
913
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
914
     * - encoding: set by user.
915
     * - decoding: unused
916
     */
917
    float rc_qsquish;
918

    
919
    float rc_qmod_amp;
920
    int rc_qmod_freq;
921
    
922
    /**
923
     * ratecontrol override, see RcOverride.
924
     * - encoding: allocated/set/freed by user.
925
     * - decoding: unused
926
     */
927
    RcOverride *rc_override;
928
    int rc_override_count;
929
    
930
    /**
931
     * rate control equation.
932
     * - encoding: set by user
933
     * - decoding: unused
934
     */
935
    char *rc_eq;
936
    
937
    /**
938
     * maximum bitrate.
939
     * - encoding: set by user.
940
     * - decoding: unused
941
     */
942
    int rc_max_rate;
943
    
944
    /**
945
     * minimum bitrate.
946
     * - encoding: set by user.
947
     * - decoding: unused
948
     */
949
    int rc_min_rate;
950
    
951
    /**
952
     * decoder bitstream buffer size.
953
     * - encoding: set by user.
954
     * - decoding: unused
955
     */
956
    int rc_buffer_size;
957
    float rc_buffer_aggressivity;
958

    
959
    /**
960
     * qscale factor between p and i frames.
961
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
962
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
963
     * - encoding: set by user.
964
     * - decoding: unused
965
     */
966
    float i_quant_factor;
967
    
968
    /**
969
     * qscale offset between p and i frames.
970
     * - encoding: set by user.
971
     * - decoding: unused
972
     */
973
    float i_quant_offset;
974
    
975
    /**
976
     * initial complexity for pass1 ratecontrol.
977
     * - encoding: set by user.
978
     * - decoding: unused
979
     */
980
    float rc_initial_cplx;
981

    
982
    /**
983
     * dct algorithm, see FF_DCT_* below.
984
     * - encoding: set by user
985
     * - decoding: unused
986
     */
987
    int dct_algo;
988
#define FF_DCT_AUTO    0
989
#define FF_DCT_FASTINT 1
990
#define FF_DCT_INT     2
991
#define FF_DCT_MMX     3
992
#define FF_DCT_MLIB    4
993
#define FF_DCT_ALTIVEC 5
994
#define FF_DCT_FAAN    6
995
    
996
    /**
997
     * luminance masking (0-> disabled).
998
     * - encoding: set by user
999
     * - decoding: unused
1000
     */
1001
    float lumi_masking;
1002
    
1003
    /**
1004
     * temporary complexity masking (0-> disabled).
1005
     * - encoding: set by user
1006
     * - decoding: unused
1007
     */
1008
    float temporal_cplx_masking;
1009
    
1010
    /**
1011
     * spatial complexity masking (0-> disabled).
1012
     * - encoding: set by user
1013
     * - decoding: unused
1014
     */
1015
    float spatial_cplx_masking;
1016
    
1017
    /**
1018
     * p block masking (0-> disabled).
1019
     * - encoding: set by user
1020
     * - decoding: unused
1021
     */
1022
    float p_masking;
1023

    
1024
    /**
1025
     * darkness masking (0-> disabled).
1026
     * - encoding: set by user
1027
     * - decoding: unused
1028
     */
1029
    float dark_masking;
1030
    
1031
    
1032
    /* for binary compatibility */
1033
    int unused;
1034
    
1035
    /**
1036
     * idct algorithm, see FF_IDCT_* below.
1037
     * - encoding: set by user
1038
     * - decoding: set by user
1039
     */
1040
    int idct_algo;
1041
#define FF_IDCT_AUTO         0
1042
#define FF_IDCT_INT          1
1043
#define FF_IDCT_SIMPLE       2
1044
#define FF_IDCT_SIMPLEMMX    3
1045
#define FF_IDCT_LIBMPEG2MMX  4
1046
#define FF_IDCT_PS2          5
1047
#define FF_IDCT_MLIB         6
1048
#define FF_IDCT_ARM          7
1049
#define FF_IDCT_ALTIVEC      8
1050
#define FF_IDCT_SH4          9
1051
#define FF_IDCT_SIMPLEARM    10
1052

    
1053
    /**
1054
     * slice count.
1055
     * - encoding: set by lavc
1056
     * - decoding: set by user (or 0)
1057
     */
1058
    int slice_count;
1059
    /**
1060
     * slice offsets in the frame in bytes.
1061
     * - encoding: set/allocated by lavc
1062
     * - decoding: set/allocated by user (or NULL)
1063
     */
1064
    int *slice_offset;
1065

    
1066
    /**
1067
     * error concealment flags.
1068
     * - encoding: unused
1069
     * - decoding: set by user
1070
     */
1071
    int error_concealment;
1072
#define FF_EC_GUESS_MVS   1
1073
#define FF_EC_DEBLOCK     2
1074

    
1075
    /**
1076
     * dsp_mask could be add used to disable unwanted CPU features
1077
     * CPU features (i.e. MMX, SSE. ...)
1078
     *
1079
     * with FORCE flag you may instead enable given CPU features
1080
     * (Dangerous: usable in case of misdetection, improper usage however will
1081
     * result into program crash)
1082
     */
1083
    unsigned dsp_mask;
1084
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1085
    /* lower 16 bits - CPU features */
1086
#ifdef HAVE_MMX
1087
#define FF_MM_MMX        0x0001 /* standard MMX */
1088
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1089
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1090
#define FF_MM_SSE        0x0008 /* SSE functions */
1091
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1092
#endif /* HAVE_MMX */
1093

    
1094
    /**
1095
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1096
     * - encoding: set by lavc
1097
     * - decoding: set by user
1098
     */
1099
     int bits_per_sample;
1100
    
1101
    /**
1102
     * prediction method (needed for huffyuv).
1103
     * - encoding: set by user
1104
     * - decoding: unused
1105
     */
1106
     int prediction_method;
1107
#define FF_PRED_LEFT   0
1108
#define FF_PRED_PLANE  1
1109
#define FF_PRED_MEDIAN 2
1110
    
1111
    /**
1112
     * sample aspect ratio (0 if unknown).
1113
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1114
     * - encoding: set by user.
1115
     * - decoding: set by lavc.
1116
     */
1117
    AVRational sample_aspect_ratio;
1118

    
1119
    /**
1120
     * the picture in the bitstream.
1121
     * - encoding: set by lavc
1122
     * - decoding: set by lavc
1123
     */
1124
    AVFrame *coded_frame;
1125

    
1126
    /**
1127
     * debug.
1128
     * - encoding: set by user.
1129
     * - decoding: set by user.
1130
     */
1131
    int debug;
1132
#define FF_DEBUG_PICT_INFO 1
1133
#define FF_DEBUG_RC        2
1134
#define FF_DEBUG_BITSTREAM 4
1135
#define FF_DEBUG_MB_TYPE   8
1136
#define FF_DEBUG_QP        16
1137
#define FF_DEBUG_MV        32
1138
//#define FF_DEBUG_VIS_MV    0x00000040
1139
#define FF_DEBUG_SKIP      0x00000080
1140
#define FF_DEBUG_STARTCODE 0x00000100
1141
#define FF_DEBUG_PTS       0x00000200
1142
#define FF_DEBUG_ER        0x00000400
1143
#define FF_DEBUG_MMCO      0x00000800
1144
#define FF_DEBUG_BUGS      0x00001000
1145
#define FF_DEBUG_VIS_QP    0x00002000
1146
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1147
    
1148
    /**
1149
     * debug.
1150
     * - encoding: set by user.
1151
     * - decoding: set by user.
1152
     */
1153
    int debug_mv;
1154
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1155
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1156
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1157

    
1158
    /**
1159
     * error.
1160
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1161
     * - decoding: unused
1162
     */
1163
    uint64_t error[4];
1164
    
1165
    /**
1166
     * minimum MB quantizer.
1167
     * - encoding: set by user.
1168
     * - decoding: unused
1169
     */
1170
    int mb_qmin;
1171

    
1172
    /**
1173
     * maximum MB quantizer.
1174
     * - encoding: set by user.
1175
     * - decoding: unused
1176
     */
1177
    int mb_qmax;
1178
    
1179
    /**
1180
     * motion estimation compare function.
1181
     * - encoding: set by user.
1182
     * - decoding: unused
1183
     */
1184
    int me_cmp;
1185
    /**
1186
     * subpixel motion estimation compare function.
1187
     * - encoding: set by user.
1188
     * - decoding: unused
1189
     */
1190
    int me_sub_cmp;
1191
    /**
1192
     * macroblock compare function (not supported yet).
1193
     * - encoding: set by user.
1194
     * - decoding: unused
1195
     */
1196
    int mb_cmp;
1197
    /**
1198
     * interlaced dct compare function
1199
     * - encoding: set by user.
1200
     * - decoding: unused
1201
     */
1202
    int ildct_cmp;
1203
#define FF_CMP_SAD  0
1204
#define FF_CMP_SSE  1
1205
#define FF_CMP_SATD 2
1206
#define FF_CMP_DCT  3
1207
#define FF_CMP_PSNR 4
1208
#define FF_CMP_BIT  5
1209
#define FF_CMP_RD   6
1210
#define FF_CMP_ZERO 7
1211
#define FF_CMP_VSAD 8
1212
#define FF_CMP_VSSE 9
1213
#define FF_CMP_CHROMA 256
1214
    
1215
    /**
1216
     * ME diamond size & shape.
1217
     * - encoding: set by user.
1218
     * - decoding: unused
1219
     */
1220
    int dia_size;
1221

    
1222
    /**
1223
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1224
     * - encoding: set by user.
1225
     * - decoding: unused
1226
     */
1227
    int last_predictor_count;
1228

    
1229
    /**
1230
     * pre pass for motion estimation.
1231
     * - encoding: set by user.
1232
     * - decoding: unused
1233
     */
1234
    int pre_me;
1235

    
1236
    /**
1237
     * motion estimation pre pass compare function.
1238
     * - encoding: set by user.
1239
     * - decoding: unused
1240
     */
1241
    int me_pre_cmp;
1242

    
1243
    /**
1244
     * ME pre pass diamond size & shape.
1245
     * - encoding: set by user.
1246
     * - decoding: unused
1247
     */
1248
    int pre_dia_size;
1249

    
1250
    /**
1251
     * subpel ME quality.
1252
     * - encoding: set by user.
1253
     * - decoding: unused
1254
     */
1255
    int me_subpel_quality;
1256

    
1257
    /**
1258
     * callback to negotiate the pixelFormat.
1259
     * @param fmt is the list of formats which are supported by the codec,
1260
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1261
     * the first is allways the native one
1262
     * @return the choosen format
1263
     * - encoding: unused
1264
     * - decoding: set by user, if not set then the native format will always be choosen
1265
     */
1266
    enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1267

    
1268
    /**
1269
     * DTG active format information (additionnal aspect ratio
1270
     * information only used in DVB MPEG2 transport streams). 0 if
1271
     * not set.
1272
     * 
1273
     * - encoding: unused.
1274
     * - decoding: set by decoder 
1275
     */
1276
    int dtg_active_format;
1277
#define FF_DTG_AFD_SAME         8
1278
#define FF_DTG_AFD_4_3          9
1279
#define FF_DTG_AFD_16_9         10
1280
#define FF_DTG_AFD_14_9         11
1281
#define FF_DTG_AFD_4_3_SP_14_9  13
1282
#define FF_DTG_AFD_16_9_SP_14_9 14
1283
#define FF_DTG_AFD_SP_4_3       15
1284

    
1285
    /**
1286
     * Maximum motion estimation search range in subpel units.
1287
     * if 0 then no limit
1288
     * 
1289
     * - encoding: set by user.
1290
     * - decoding: unused.
1291
     */
1292
    int me_range;
1293

    
1294
    /**
1295
     * frame_rate_base.
1296
     * for variable fps this is 1
1297
     * - encoding: set by user.
1298
     * - decoding: set by lavc.
1299
     * @todo move this after frame_rate
1300
     */
1301

    
1302
    int frame_rate_base;
1303
    /**
1304
     * intra quantizer bias.
1305
     * - encoding: set by user.
1306
     * - decoding: unused
1307
     */
1308
    int intra_quant_bias;
1309
#define FF_DEFAULT_QUANT_BIAS 999999
1310
    
1311
    /**
1312
     * inter quantizer bias.
1313
     * - encoding: set by user.
1314
     * - decoding: unused
1315
     */
1316
    int inter_quant_bias;
1317

    
1318
    /**
1319
     * color table ID.
1320
     * - encoding: unused.
1321
     * - decoding: which clrtable should be used for 8bit RGB images
1322
     *             table have to be stored somewhere FIXME
1323
     */
1324
    int color_table_id;
1325
    
1326
    /**
1327
     * internal_buffer count. 
1328
     * Dont touch, used by lavc default_get_buffer()
1329
     */
1330
    int internal_buffer_count;
1331
    
1332
    /**
1333
     * internal_buffers. 
1334
     * Dont touch, used by lavc default_get_buffer()
1335
     */
1336
    void *internal_buffer;
1337

    
1338
#define FF_LAMBDA_SHIFT 7
1339
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1340
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1341
#define FF_LAMBDA_MAX (256*128-1)
1342

    
1343
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1344
    /**
1345
     * global quality for codecs which cannot change it per frame.
1346
     * this should be proportional to MPEG1/2/4 qscale.
1347
     * - encoding: set by user.
1348
     * - decoding: unused
1349
     */
1350
    int global_quality;
1351
    
1352
#define FF_CODER_TYPE_VLC   0
1353
#define FF_CODER_TYPE_AC    1
1354
    /**
1355
     * coder type
1356
     * - encoding: set by user.
1357
     * - decoding: unused
1358
     */
1359
    int coder_type;
1360

    
1361
    /**
1362
     * context model
1363
     * - encoding: set by user.
1364
     * - decoding: unused
1365
     */
1366
    int context_model;
1367
    
1368
    /**
1369
     * slice flags
1370
     * - encoding: unused
1371
     * - decoding: set by user.
1372
     */
1373
    int slice_flags;
1374
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1375
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1376
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1377

    
1378
    /**
1379
     * XVideo Motion Acceleration
1380
     * - encoding: forbidden
1381
     * - decoding: set by decoder
1382
     */
1383
    int xvmc_acceleration;
1384
    
1385
    /**
1386
     * macroblock decision mode
1387
     * - encoding: set by user.
1388
     * - decoding: unused
1389
     */
1390
    int mb_decision;
1391
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1392
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1393
#define FF_MB_DECISION_RD     2        ///< rate distoration
1394

    
1395
    /**
1396
     * custom intra quantization matrix
1397
     * - encoding: set by user, can be NULL
1398
     * - decoding: set by lavc
1399
     */
1400
    uint16_t *intra_matrix;
1401

    
1402
    /**
1403
     * custom inter quantization matrix
1404
     * - encoding: set by user, can be NULL
1405
     * - decoding: set by lavc
1406
     */
1407
    uint16_t *inter_matrix;
1408
    
1409
    /**
1410
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1411
     * this is used to workaround some encoder bugs
1412
     * - encoding: unused
1413
     * - decoding: set by user, will be converted to upper case by lavc during init
1414
     */
1415
    unsigned int stream_codec_tag;
1416

    
1417
    /**
1418
     * scene change detection threshold.
1419
     * 0 is default, larger means fewer detected scene changes
1420
     * - encoding: set by user.
1421
     * - decoding: unused
1422
     */
1423
    int scenechange_threshold;
1424

    
1425
    /**
1426
     * minimum lagrange multipler
1427
     * - encoding: set by user.
1428
     * - decoding: unused
1429
     */
1430
    int lmin;
1431

    
1432
    /**
1433
     * maximum lagrange multipler
1434
     * - encoding: set by user.
1435
     * - decoding: unused
1436
     */
1437
    int lmax;
1438

    
1439
    /**
1440
     * Palette control structure
1441
     * - encoding: ??? (no palette-enabled encoder yet)
1442
     * - decoding: set by user.
1443
     */
1444
    struct AVPaletteControl *palctrl;
1445

    
1446
    /**
1447
     * noise reduction strength
1448
     * - encoding: set by user.
1449
     * - decoding: unused
1450
     */
1451
    int noise_reduction;
1452
    
1453
    /**
1454
     * called at the beginning of a frame to get cr buffer for it.
1455
     * buffer type (size, hints) must be the same. lavc won't check it.
1456
     * lavc will pass previous buffer in pic, function should return
1457
     * same buffer or new buffer with old frame "painted" into it.
1458
     * if pic.data[0] == NULL must behave like get_buffer().
1459
     * - encoding: unused
1460
     * - decoding: set by lavc, user can override
1461
     */
1462
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1463

    
1464
    /**
1465
     * number of bits which should be loaded into the rc buffer before decoding starts
1466
     * - encoding: set by user.
1467
     * - decoding: unused
1468
     */
1469
    int rc_initial_buffer_occupancy;
1470

    
1471
    /**
1472
     *
1473
     * - encoding: set by user.
1474
     * - decoding: unused
1475
     */
1476
    int inter_threshold;
1477

    
1478
    /**
1479
     * CODEC_FLAG2_*.
1480
     * - encoding: set by user.
1481
     * - decoding: set by user.
1482
     */
1483
    int flags2;
1484

    
1485
    /**
1486
     * simulates errors in the bitstream to test error concealment.
1487
     * - encoding: set by user.
1488
     * - decoding: unused.
1489
     */
1490
    int error_rate;
1491
    
1492
    /**
1493
     * MP3 antialias algorithm, see FF_AA_* below.
1494
     * - encoding: unused
1495
     * - decoding: set by user
1496
     */
1497
    int antialias_algo;
1498
#define FF_AA_AUTO    0
1499
#define FF_AA_FASTINT 1 //not implemented yet
1500
#define FF_AA_INT     2
1501
#define FF_AA_FLOAT   3
1502
    /**
1503
     * Quantizer noise shaping.
1504
     * - encoding: set by user
1505
     * - decoding: unused
1506
     */
1507
    int quantizer_noise_shaping;
1508

    
1509
    /**
1510
     * Thread count.
1511
     * is used to decide how many independant tasks should be passed to execute()
1512
     * - encoding: set by user
1513
     * - decoding: set by user
1514
     */
1515
    int thread_count;
1516
    
1517
    /**
1518
     * the codec may call this to execute several independant things. it will return only after
1519
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1520
     * default implementation will execute the parts serially
1521
     * @param count the number of functions this will be identical to thread_count if possible
1522
     * - encoding: set by lavc, user can override
1523
     * - decoding: set by lavc, user can override
1524
     */
1525
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1526
    
1527
    /**
1528
     * Thread opaque.
1529
     * can be used by execute() to store some per AVCodecContext stuff.
1530
     * - encoding: set by execute()
1531
     * - decoding: set by execute()
1532
     */
1533
    void *thread_opaque;
1534
} AVCodecContext;
1535

    
1536

    
1537
/**
1538
 * AVOption.
1539
 */
1540
typedef struct AVOption {
1541
    /** options' name */
1542
    const char *name; /* if name is NULL, it indicates a link to next */
1543
    /** short English text help or const struct AVOption* subpointer */
1544
    const char *help; //        const struct AVOption* sub;
1545
    /** offset to context structure where the parsed value should be stored */
1546
    int offset;
1547
    /** options' type */
1548
    int type;
1549
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1550
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1551
#define FF_OPT_TYPE_INT 3       ///< integer
1552
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1553
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1554
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1555
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1556
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1557
    /** min value  (min == max   ->  no limits) */
1558
    double min;
1559
    /** maximum value for double/int */
1560
    double max;
1561
    /** default boo [0,1]l/double/int value */
1562
    double defval;
1563
    /**
1564
     * default string value (with optional semicolon delimited extra option-list
1565
     * i.e.   option1;option2;option3
1566
     * defval might select other then first argument as default
1567
     */
1568
    const char *defstr;
1569
#define FF_OPT_MAX_DEPTH 10
1570
} AVOption;
1571

    
1572
/**
1573
 * Parse option(s) and sets fields in passed structure
1574
 * @param strct        structure where the parsed results will be written
1575
 * @param list  list with AVOptions
1576
 * @param opts        string with options for parsing
1577
 */
1578
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1579

    
1580

    
1581
/**
1582
 * AVCodec.
1583
 */
1584
typedef struct AVCodec {
1585
    const char *name;
1586
    enum CodecType type;
1587
    int id;
1588
    int priv_data_size;
1589
    int (*init)(AVCodecContext *);
1590
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1591
    int (*close)(AVCodecContext *);
1592
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1593
                  uint8_t *buf, int buf_size);
1594
    int capabilities;
1595
    const AVOption *options;
1596
    struct AVCodec *next;
1597
    void (*flush)(AVCodecContext *);
1598
} AVCodec;
1599

    
1600
/**
1601
 * four components are given, that's all.
1602
 * the last component is alpha
1603
 */
1604
typedef struct AVPicture {
1605
    uint8_t *data[4];
1606
    int linesize[4];       ///< number of bytes per line
1607
} AVPicture;
1608

    
1609
/**
1610
 * AVPaletteControl
1611
 * This structure defines a method for communicating palette changes
1612
 * between and demuxer and a decoder.
1613
 */
1614
#define AVPALETTE_SIZE 1024
1615
#define AVPALETTE_COUNT 256
1616
typedef struct AVPaletteControl {
1617

    
1618
    /* demuxer sets this to 1 to indicate the palette has changed;
1619
     * decoder resets to 0 */
1620
    int palette_changed;
1621

    
1622
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1623
     * the individual palette components should be on a 8-bit scale; if
1624
     * the palette data comes from a IBM VGA native format, the component
1625
     * data is probably 6 bits in size and needs to be scaled */
1626
    unsigned int palette[AVPALETTE_COUNT];
1627

    
1628
} AVPaletteControl;
1629

    
1630
extern AVCodec ac3_encoder;
1631
extern AVCodec mp2_encoder;
1632
extern AVCodec mp3lame_encoder;
1633
extern AVCodec oggvorbis_encoder;
1634
extern AVCodec faac_encoder;
1635
extern AVCodec mpeg1video_encoder;
1636
extern AVCodec mpeg2video_encoder;
1637
extern AVCodec h263_encoder;
1638
extern AVCodec h263p_encoder;
1639
extern AVCodec flv_encoder;
1640
extern AVCodec rv10_encoder;
1641
extern AVCodec rv20_encoder;
1642
extern AVCodec mjpeg_encoder;
1643
extern AVCodec ljpeg_encoder;
1644
extern AVCodec mpeg4_encoder;
1645
extern AVCodec msmpeg4v1_encoder;
1646
extern AVCodec msmpeg4v2_encoder;
1647
extern AVCodec msmpeg4v3_encoder;
1648
extern AVCodec wmv1_encoder;
1649
extern AVCodec wmv2_encoder;
1650
extern AVCodec huffyuv_encoder;
1651
extern AVCodec h264_encoder;
1652
extern AVCodec asv1_encoder;
1653
extern AVCodec asv2_encoder;
1654
extern AVCodec vcr1_encoder;
1655
extern AVCodec ffv1_encoder;
1656
extern AVCodec mdec_encoder;
1657
extern AVCodec zlib_encoder;
1658

    
1659
extern AVCodec h263_decoder;
1660
extern AVCodec mpeg4_decoder;
1661
extern AVCodec msmpeg4v1_decoder;
1662
extern AVCodec msmpeg4v2_decoder;
1663
extern AVCodec msmpeg4v3_decoder;
1664
extern AVCodec wmv1_decoder;
1665
extern AVCodec wmv2_decoder;
1666
extern AVCodec mpeg1video_decoder;
1667
extern AVCodec mpeg2video_decoder;
1668
extern AVCodec mpegvideo_decoder;
1669
extern AVCodec mpeg_xvmc_decoder;
1670
extern AVCodec h263i_decoder;
1671
extern AVCodec flv_decoder;
1672
extern AVCodec rv10_decoder;
1673
extern AVCodec rv20_decoder;
1674
extern AVCodec svq1_decoder;
1675
extern AVCodec svq3_decoder;
1676
extern AVCodec dvvideo_decoder;
1677
extern AVCodec wmav1_decoder;
1678
extern AVCodec wmav2_decoder;
1679
extern AVCodec mjpeg_decoder;
1680
extern AVCodec mjpegb_decoder;
1681
extern AVCodec sp5x_decoder;
1682
extern AVCodec mp2_decoder;
1683
extern AVCodec mp3_decoder;
1684
extern AVCodec mace3_decoder;
1685
extern AVCodec mace6_decoder;
1686
extern AVCodec huffyuv_decoder;
1687
extern AVCodec oggvorbis_decoder;
1688
extern AVCodec cyuv_decoder;
1689
extern AVCodec h264_decoder;
1690
extern AVCodec indeo3_decoder;
1691
extern AVCodec vp3_decoder;
1692
extern AVCodec theora_decoder;
1693
extern AVCodec amr_nb_decoder;
1694
extern AVCodec amr_nb_encoder;
1695
extern AVCodec amr_wb_encoder;
1696
extern AVCodec amr_wb_decoder;
1697
extern AVCodec aac_decoder;
1698
extern AVCodec mpeg4aac_decoder;
1699
extern AVCodec asv1_decoder;
1700
extern AVCodec asv2_decoder;
1701
extern AVCodec vcr1_decoder;
1702
extern AVCodec cljr_decoder;
1703
extern AVCodec ffv1_decoder;
1704
extern AVCodec fourxm_decoder;
1705
extern AVCodec mdec_decoder;
1706
extern AVCodec roq_decoder;
1707
extern AVCodec interplay_video_decoder;
1708
extern AVCodec xan_wc3_decoder;
1709
extern AVCodec rpza_decoder;
1710
extern AVCodec cinepak_decoder;
1711
extern AVCodec msrle_decoder;
1712
extern AVCodec msvideo1_decoder;
1713
extern AVCodec vqa_decoder;
1714
extern AVCodec idcin_decoder;
1715
extern AVCodec eightbps_decoder;
1716
extern AVCodec smc_decoder;
1717
extern AVCodec flic_decoder;
1718
extern AVCodec vmdvideo_decoder;
1719
extern AVCodec vmdaudio_decoder;
1720
extern AVCodec truemotion1_decoder;
1721
extern AVCodec mszh_decoder;
1722
extern AVCodec zlib_decoder;
1723
extern AVCodec ra_144_decoder;
1724
extern AVCodec ra_288_decoder;
1725
extern AVCodec roq_dpcm_decoder;
1726
extern AVCodec interplay_dpcm_decoder;
1727
extern AVCodec xan_dpcm_decoder;
1728
extern AVCodec qtrle_decoder;
1729
extern AVCodec flac_decoder;
1730

    
1731
/* pcm codecs */
1732
#define PCM_CODEC(id, name) \
1733
extern AVCodec name ## _decoder; \
1734
extern AVCodec name ## _encoder
1735

    
1736
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1737
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1738
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1739
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1740
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1741
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1742
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1743
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1744

    
1745
/* adpcm codecs */
1746

    
1747
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1748
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1749
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1750
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1751
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1752
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1753
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1754
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1755
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1756
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1757
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1758
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1759

    
1760
#undef PCM_CODEC
1761

    
1762
/* dummy raw video codec */
1763
extern AVCodec rawvideo_encoder;
1764
extern AVCodec rawvideo_decoder;
1765

    
1766
/* the following codecs use external GPL libs */
1767
extern AVCodec ac3_decoder;
1768

    
1769
/* resample.c */
1770

    
1771
struct ReSampleContext;
1772

    
1773
typedef struct ReSampleContext ReSampleContext;
1774

    
1775
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1776
                                     int output_rate, int input_rate);
1777
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1778
void audio_resample_close(ReSampleContext *s);
1779

    
1780
/* YUV420 format is assumed ! */
1781

    
1782
struct ImgReSampleContext;
1783

    
1784
typedef struct ImgReSampleContext ImgReSampleContext;
1785

    
1786
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1787
                                      int input_width, int input_height);
1788

    
1789
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1790
                                      int iwidth, int iheight,
1791
                                      int topBand, int bottomBand,
1792
                                      int leftBand, int rightBand);
1793

    
1794
void img_resample(ImgReSampleContext *s, 
1795
                  AVPicture *output, const AVPicture *input);
1796

    
1797
void img_resample_close(ImgReSampleContext *s);
1798

    
1799
/**
1800
 * Allocate memory for a picture.  Call avpicture_free to free it.
1801
 *
1802
 * @param picture the picture to be filled in.
1803
 * @param pix_fmt the format of the picture.
1804
 * @param width the width of the picture.
1805
 * @param height the height of the picture.
1806
 * @return 0 if successful, -1 if not.
1807
 */
1808
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1809

    
1810
/* Free a picture previously allocated by avpicture_alloc. */
1811
void avpicture_free(AVPicture *picture);
1812

    
1813
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1814
                   int pix_fmt, int width, int height);
1815
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1816
                     unsigned char *dest, int dest_size);
1817
int avpicture_get_size(int pix_fmt, int width, int height);
1818
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1819
const char *avcodec_get_pix_fmt_name(int pix_fmt);
1820
enum PixelFormat avcodec_get_pix_fmt(const char* name);
1821

    
1822
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
1823
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
1824
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
1825
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
1826
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
1827
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1828

    
1829
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1830
                             int has_alpha);
1831
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1832
                              int has_alpha, int *loss_ptr);
1833

    
1834
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
1835
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
1836
int img_get_alpha_info(const AVPicture *src,
1837
                       int pix_fmt, int width, int height);
1838

    
1839
/* convert among pixel formats */
1840
int img_convert(AVPicture *dst, int dst_pix_fmt,
1841
                const AVPicture *src, int pix_fmt, 
1842
                int width, int height);
1843

    
1844
/* deinterlace a picture */
1845
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1846
                          int pix_fmt, int width, int height);
1847

    
1848
/* external high level API */
1849

    
1850
extern AVCodec *first_avcodec;
1851

    
1852
/* returns LIBAVCODEC_VERSION_INT constant */
1853
unsigned avcodec_version(void);
1854
/* returns LIBAVCODEC_BUILD constant */
1855
unsigned avcodec_build(void);
1856
void avcodec_init(void);
1857

    
1858
void register_avcodec(AVCodec *format);
1859
AVCodec *avcodec_find_encoder(enum CodecID id);
1860
AVCodec *avcodec_find_encoder_by_name(const char *name);
1861
AVCodec *avcodec_find_decoder(enum CodecID id);
1862
AVCodec *avcodec_find_decoder_by_name(const char *name);
1863
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1864

    
1865
void avcodec_get_context_defaults(AVCodecContext *s);
1866
AVCodecContext *avcodec_alloc_context(void);
1867
AVFrame *avcodec_alloc_frame(void);
1868

    
1869
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1870
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1871
void avcodec_default_free_buffers(AVCodecContext *s);
1872

    
1873
int avcodec_pthread_init(AVCodecContext *s, int thread_count);
1874
void avcodec_pthread_free(AVCodecContext *s);
1875
int avcodec_pthread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
1876
//FIXME func typedef
1877

    
1878
/**
1879
 * opens / inits the AVCodecContext.
1880
 * not thread save!
1881
 */
1882
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1883

    
1884
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
1885
                         int *frame_size_ptr,
1886
                         uint8_t *buf, int buf_size);
1887
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
1888
                         int *got_picture_ptr,
1889
                         uint8_t *buf, int buf_size);
1890
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
1891
                        int *data_size_ptr,
1892
                        uint8_t *buf, int buf_size);
1893
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1894
                         const short *samples);
1895
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1896
                         const AVFrame *pict);
1897

    
1898
int avcodec_close(AVCodecContext *avctx);
1899

    
1900
void avcodec_register_all(void);
1901

    
1902
void avcodec_flush_buffers(AVCodecContext *avctx);
1903

    
1904
/* misc usefull functions */
1905

    
1906
/**
1907
 * returns a single letter to describe the picture type
1908
 */
1909
char av_get_pict_type_char(int pict_type);
1910

    
1911
/**
1912
 * reduce a fraction.
1913
 * this is usefull for framerate calculations
1914
 * @param max the maximum allowed for dst_nom & dst_den
1915
 * @return 1 if exact, 0 otherwise
1916
 */
1917
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1918

    
1919
/**
1920
 * rescale a 64bit integer.
1921
 * a simple a*b/c isnt possible as it can overflow
1922
 */
1923
int64_t av_rescale(int64_t a, int b, int c);
1924

    
1925

    
1926
/**
1927
 * Interface for 0.5.0 version
1928
 *
1929
 * do not even think about it's usage for this moment
1930
 */
1931

    
1932
typedef struct {
1933
    /// compressed size used from given memory buffer
1934
    int size;
1935
    /// I/P/B frame type
1936
    int frame_type;
1937
} avc_enc_result_t;
1938

    
1939
/**
1940
 * Commands
1941
 * order can't be changed - once it was defined
1942
 */
1943
typedef enum {
1944
    // general commands
1945
    AVC_OPEN_BY_NAME = 0xACA000,
1946
    AVC_OPEN_BY_CODEC_ID,
1947
    AVC_OPEN_BY_FOURCC,
1948
    AVC_CLOSE,
1949

    
1950
    AVC_FLUSH,
1951
    // pin - struct { uint8_t* src, uint_t src_size }
1952
    // pout - struct { AVPicture* img, consumed_bytes,
1953
    AVC_DECODE,
1954
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1955
    // pout - uint_t used_from_dest_size
1956
    AVC_ENCODE, 
1957

    
1958
    // query/get video commands
1959
    AVC_GET_VERSION = 0xACB000,
1960
    AVC_GET_WIDTH,
1961
    AVC_GET_HEIGHT,
1962
    AVC_GET_DELAY,
1963
    AVC_GET_QUANT_TABLE,
1964
    // ...
1965

    
1966
    // query/get audio commands
1967
    AVC_GET_FRAME_SIZE = 0xABC000,
1968

    
1969
    // maybe define some simple structure which
1970
    // might be passed to the user - but they can't
1971
    // contain any codec specific parts and these
1972
    // calls are usualy necessary only few times
1973

    
1974
    // set video commands
1975
    AVC_SET_WIDTH = 0xACD000,
1976
    AVC_SET_HEIGHT,
1977

    
1978
    // set video encoding commands
1979
    AVC_SET_FRAME_RATE = 0xACD800,
1980
    AVC_SET_QUALITY,
1981
    AVC_SET_HURRY_UP,
1982

    
1983
    // set audio commands
1984
    AVC_SET_SAMPLE_RATE = 0xACE000,
1985
    AVC_SET_CHANNELS,
1986

    
1987
} avc_cmd_t;
1988

    
1989
/**
1990
 * \param handle  allocated private structure by libavcodec
1991
 *                for initialization pass NULL - will be returned pout
1992
 *                user is supposed to know nothing about its structure
1993
 * \param cmd     type of operation to be performed
1994
 * \param pint    input parameter
1995
 * \param pout    output parameter
1996
 *
1997
 * \returns  command status - eventually for query command it might return
1998
 * integer resulting value
1999
 */
2000
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2001

    
2002
/* frame parsing */
2003
typedef struct AVCodecParserContext {
2004
    void *priv_data;
2005
    struct AVCodecParser *parser;
2006
    int64_t frame_offset; /* offset of the current frame */
2007
    int64_t cur_offset; /* current offset 
2008
                           (incremented by each av_parser_parse()) */
2009
    int64_t last_frame_offset; /* offset of the last frame */
2010
    /* video info */
2011
    int pict_type; /* XXX: put it back in AVCodecContext */
2012
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2013
    int64_t pts;     /* pts of the current frame */
2014
    int64_t dts;     /* dts of the current frame */
2015

    
2016
    /* private data */
2017
    int64_t last_pts;
2018
    int64_t last_dts;
2019

    
2020
#define AV_PARSER_PTS_NB 4
2021
    int cur_frame_start_index;
2022
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2023
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2024
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2025
} AVCodecParserContext;
2026

    
2027
typedef struct AVCodecParser {
2028
    int codec_ids[3]; /* several codec IDs are permitted */
2029
    int priv_data_size;
2030
    int (*parser_init)(AVCodecParserContext *s);
2031
    int (*parser_parse)(AVCodecParserContext *s, 
2032
                        AVCodecContext *avctx,
2033
                        uint8_t **poutbuf, int *poutbuf_size, 
2034
                        const uint8_t *buf, int buf_size);
2035
    void (*parser_close)(AVCodecParserContext *s);
2036
    struct AVCodecParser *next;
2037
} AVCodecParser;
2038

    
2039
extern AVCodecParser *av_first_parser;
2040

    
2041
void av_register_codec_parser(AVCodecParser *parser);
2042
AVCodecParserContext *av_parser_init(int codec_id);
2043
int av_parser_parse(AVCodecParserContext *s, 
2044
                    AVCodecContext *avctx,
2045
                    uint8_t **poutbuf, int *poutbuf_size, 
2046
                    const uint8_t *buf, int buf_size,
2047
                    int64_t pts, int64_t dts);
2048
void av_parser_close(AVCodecParserContext *s);
2049

    
2050
extern AVCodecParser mpegvideo_parser;
2051
extern AVCodecParser mpeg4video_parser;
2052
extern AVCodecParser h263_parser;
2053
extern AVCodecParser h264_parser;
2054
extern AVCodecParser mpegaudio_parser;
2055
extern AVCodecParser ac3_parser;
2056

    
2057
/* memory */
2058
void *av_malloc(unsigned int size);
2059
void *av_mallocz(unsigned int size);
2060
void *av_realloc(void *ptr, unsigned int size);
2061
void av_free(void *ptr);
2062
char *av_strdup(const char *s);
2063
void __av_freep(void **ptr);
2064
#define av_freep(p) __av_freep((void **)(p))
2065
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2066
/* for static data only */
2067
/* call av_free_static to release all staticaly allocated tables */
2068
void av_free_static(void);
2069
void *__av_mallocz_static(void** location, unsigned int size);
2070
#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
2071

    
2072
/* add by bero : in adx.c */
2073
int is_adx(const unsigned char *buf,size_t bufsize);
2074

    
2075
void img_copy(AVPicture *dst, const AVPicture *src,
2076
              int pix_fmt, int width, int height);
2077

    
2078
/* av_log API */
2079

    
2080
#include <stdarg.h>
2081

    
2082
#define AV_LOG_ERROR 0
2083
#define AV_LOG_INFO 1
2084
#define AV_LOG_DEBUG 2
2085

    
2086
extern void av_log(AVCodecContext*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2087
extern void av_vlog(AVCodecContext*, int level, const char *fmt, va_list);
2088
extern int av_log_get_level(void);
2089
extern void av_log_set_level(int);
2090
extern void av_log_set_callback(void (*)(AVCodecContext*, int, const char*, va_list));
2091

    
2092
#undef  AV_LOG_TRAP_PRINTF
2093
#ifdef AV_LOG_TRAP_PRINTF
2094
#define printf DO NOT USE
2095
#define fprintf DO NOT USE
2096
#undef stderr
2097
#define stderr DO NOT USE
2098
#endif
2099

    
2100
#ifdef __cplusplus
2101
}
2102
#endif
2103

    
2104
#endif /* AVCODEC_H */