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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       4733
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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_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_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_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_MSZH,
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    CODEC_ID_ZLIB,
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    CODEC_ID_QTRLE,
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    CODEC_ID_SNOW,
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    CODEC_ID_TSCC,
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    CODEC_ID_ULTI,
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    CODEC_ID_QDRAW,
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    CODEC_ID_VIXL,
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    CODEC_ID_QPEG,
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    CODEC_ID_XVID,
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    CODEC_ID_PNG,
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    CODEC_ID_PPM,
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    CODEC_ID_PBM,
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    CODEC_ID_PGM,
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    CODEC_ID_PGMYUV,
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    CODEC_ID_PAM,
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    /* various pcm "codecs" */
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    CODEC_ID_PCM_S16LE= 0x10000,
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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= 0x11000,
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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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    CODEC_ID_ADPCM_CT,
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    /* AMR */
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    CODEC_ID_AMR_NB= 0x12000,
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    CODEC_ID_AMR_WB,
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    /* RealAudio codecs*/
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    CODEC_ID_RA_144= 0x13000,
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    CODEC_ID_RA_288,
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    /* various DPCM codecs */
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    CODEC_ID_ROQ_DPCM= 0x14000,
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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_MP2= 0x15000,
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    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
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    CODEC_ID_AAC,
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    CODEC_ID_MPEG4AAC,
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    CODEC_ID_AC3,
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    CODEC_ID_DTS,
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    CODEC_ID_VORBIS,
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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_VMDAUDIO,
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    CODEC_ID_SONIC,
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    CODEC_ID_SONIC_LS,
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    CODEC_ID_FLAC,
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    CODEC_ID_MPEG2TS= 0x20000, /* _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,    ///< 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_UYVY411,   ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
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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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#define CODEC_FLAG2_STRICT_GOP    0x00000002 ///< strictly enforce GOP size
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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
323
   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.
357
 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
358
 */
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typedef struct AVPanScan{
360
    /**
361
     * id.
362
     * - encoding: set by user.
363
     * - decoding: set by lavc
364
     */
365
    int id;
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367
    /**
368
     * width and height in 1/16 pel
369
     * - encoding: set by user.
370
     * - decoding: set by lavc
371
     */
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    int width;
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    int height;
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375
    /**
376
     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
377
     * - encoding: set by user.
378
     * - decoding: set by lavc
379
     */
380
    int16_t position[3][2];
381
}AVPanScan;
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383
#define FF_COMMON_FRAME \
384
    /**\
385
     * pointer to the picture planes.\
386
     * this might be different from the first allocated byte\
387
     * - encoding: \
388
     * - decoding: \
389
     */\
390
    uint8_t *data[4];\
391
    int linesize[4];\
392
    /**\
393
     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
394
     * this isnt used by lavc unless the default get/release_buffer() is used\
395
     * - encoding: \
396
     * - decoding: \
397
     */\
398
    uint8_t *base[4];\
399
    /**\
400
     * 1 -> keyframe, 0-> not\
401
     * - encoding: set by lavc\
402
     * - decoding: set by lavc\
403
     */\
404
    int key_frame;\
405
\
406
    /**\
407
     * picture type of the frame, see ?_TYPE below.\
408
     * - encoding: set by lavc for coded_picture (and set by user for input)\
409
     * - decoding: set by lavc\
410
     */\
411
    int pict_type;\
412
\
413
    /**\
414
     * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
415
     * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
416
     * - encoding: MUST be set by user\
417
     * - decoding: set by lavc\
418
     */\
419
    int64_t pts;\
420
\
421
    /**\
422
     * picture number in bitstream order.\
423
     * - encoding: set by\
424
     * - decoding: set by lavc\
425
     */\
426
    int coded_picture_number;\
427
    /**\
428
     * picture number in display order.\
429
     * - encoding: set by\
430
     * - decoding: set by lavc\
431
     */\
432
    int display_picture_number;\
433
\
434
    /**\
435
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
436
     * - encoding: set by lavc for coded_picture (and set by user for input)\
437
     * - decoding: set by lavc\
438
     */\
439
    int quality; \
440
\
441
    /**\
442
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
443
     * set to INT_MAX if the buffer has not been used yet \
444
     * - encoding: unused\
445
     * - decoding: MUST be set by get_buffer()\
446
     */\
447
    int age;\
448
\
449
    /**\
450
     * is this picture used as reference\
451
     * - encoding: unused\
452
     * - decoding: set by lavc (before get_buffer() call))\
453
     */\
454
    int reference;\
455
\
456
    /**\
457
     * QP table\
458
     * - encoding: unused\
459
     * - decoding: set by lavc\
460
     */\
461
    int8_t *qscale_table;\
462
    /**\
463
     * QP store stride\
464
     * - encoding: unused\
465
     * - decoding: set by lavc\
466
     */\
467
    int qstride;\
468
\
469
    /**\
470
     * mbskip_table[mb]>=1 if MB didnt change\
471
     * stride= mb_width = (width+15)>>4\
472
     * - encoding: unused\
473
     * - decoding: set by lavc\
474
     */\
475
    uint8_t *mbskip_table;\
476
\
477
    /**\
478
     * Motion vector table\
479
     * - encoding: set by user\
480
     * - decoding: set by lavc\
481
     */\
482
    int16_t (*motion_val[2])[2];\
483
\
484
    /**\
485
     * Macroblock type table\
486
     * mb_type_base + mb_width + 2\
487
     * - encoding: set by user\
488
     * - decoding: set by lavc\
489
     */\
490
    uint32_t *mb_type;\
491
\
492
    /**\
493
     * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
494
     * - encoding: unused\
495
     * - decoding: set by lavc\
496
     */\
497
    uint8_t motion_subsample_log2;\
498
\
499
    /**\
500
     * for some private data of the user\
501
     * - encoding: unused\
502
     * - decoding: set by user\
503
     */\
504
    void *opaque;\
505
\
506
    /**\
507
     * error\
508
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
509
     * - decoding: unused\
510
     */\
511
    uint64_t error[4];\
512
\
513
    /**\
514
     * type of the buffer (to keep track of who has to dealloc data[*])\
515
     * - encoding: set by the one who allocs it\
516
     * - decoding: set by the one who allocs it\
517
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
518
     */\
519
    int type;\
520
    \
521
    /**\
522
     * when decoding, this signal how much the picture must be delayed.\
523
     * extra_delay = repeat_pict / (2*fps)\
524
     * - encoding: unused\
525
     * - decoding: set by lavc\
526
     */\
527
    int repeat_pict;\
528
    \
529
    /**\
530
     * \
531
     */\
532
    int qscale_type;\
533
    \
534
    /**\
535
     * The content of the picture is interlaced.\
536
     * - encoding: set by user\
537
     * - decoding: set by lavc (default 0)\
538
     */\
539
    int interlaced_frame;\
540
    \
541
    /**\
542
     * if the content is interlaced, is top field displayed first.\
543
     * - encoding: set by user\
544
     * - decoding: set by lavc\
545
     */\
546
    int top_field_first;\
547
    \
548
    /**\
549
     * Pan scan.\
550
     * - encoding: set by user\
551
     * - decoding: set by lavc\
552
     */\
553
    AVPanScan *pan_scan;\
554
    \
555
    /**\
556
     * tell user application that palette has changed from previous frame.\
557
     * - encoding: ??? (no palette-enabled encoder yet)\
558
     * - decoding: set by lavc (default 0)\
559
     */\
560
    int palette_has_changed;\
561
    \
562
    /**\
563
     * Codec suggestion on buffer type if != 0\
564
     * - encoding: unused\
565
     * - decoding: set by lavc (before get_buffer() call))\
566
     */\
567
    int buffer_hints;\
568
\
569
    /**\
570
     * DCT coeffitients\
571
     * - encoding: unused\
572
     * - decoding: set by lavc\
573
     */\
574
    short *dct_coeff;\
575
\
576
    /**\
577
     * Motion referece frame index\
578
     * - encoding: set by user\
579
     * - decoding: set by lavc\
580
     */\
581
    int8_t *ref_index[2];
582

    
583
#define FF_QSCALE_TYPE_MPEG1        0
584
#define FF_QSCALE_TYPE_MPEG2        1
585

    
586
#define FF_BUFFER_TYPE_INTERNAL 1
587
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
588
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
589
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
590

    
591

    
592
#define FF_I_TYPE 1 // Intra
593
#define FF_P_TYPE 2 // Predicted
594
#define FF_B_TYPE 3 // Bi-dir predicted
595
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
596
#define FF_SI_TYPE 5
597
#define FF_SP_TYPE 6
598

    
599
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
600
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
601
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
602
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
603

    
604
/**
605
 * Audio Video Frame.
606
 */
607
typedef struct AVFrame {
608
    FF_COMMON_FRAME
609
} AVFrame;
610

    
611
#define DEFAULT_FRAME_RATE_BASE 1001000
612

    
613
/**
614
 * Used by av_log
615
 */
616
typedef struct AVCLASS AVClass;
617
struct AVCLASS {
618
    const char* class_name;
619
    const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
620
                                        or AVFormatContext, which begin with an AVClass.
621
                                        Needed because av_log is in libavcodec and has no visibility
622
                                        of AVIn/OutputFormat */
623
};
624

    
625
/**
626
 * main external api structure.
627
 */
628
typedef struct AVCodecContext {
629
    /**
630
     * Info on struct for av_log
631
     * - set by avcodec_alloc_context
632
     */
633
    AVClass *av_class;
634
    /**
635
     * the average bitrate.
636
     * - encoding: set by user. unused for constant quantizer encoding
637
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
638
     */
639
    int bit_rate;
640

    
641
    /**
642
     * number of bits the bitstream is allowed to diverge from the reference.
643
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
644
     * - encoding: set by user. unused for constant quantizer encoding
645
     * - decoding: unused
646
     */
647
    int bit_rate_tolerance; 
648

    
649
    /**
650
     * CODEC_FLAG_*.
651
     * - encoding: set by user.
652
     * - decoding: set by user.
653
     */
654
    int flags;
655

    
656
    /**
657
     * some codecs needs additionnal format info. It is stored here
658
     * - encoding: set by user. 
659
     * - decoding: set by lavc. (FIXME is this ok?)
660
     */
661
    int sub_id;
662

    
663
    /**
664
     * motion estimation algorithm used for video coding.
665
     * - encoding: MUST be set by user.
666
     * - decoding: unused
667
     */
668
    int me_method;
669

    
670
    /**
671
     * some codecs need / can use extra-data like huffman tables.
672
     * mjpeg: huffman tables
673
     * rv10: additional flags
674
     * mpeg4: global headers (they can be in the bitstream or here)
675
     * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
676
     * then extradata_size to avoid prolems if its read with the bitstream reader
677
     * - encoding: set/allocated/freed by lavc.
678
     * - decoding: set/allocated/freed by user.
679
     */
680
    void *extradata;
681
    int extradata_size;
682
    
683
    /* video only */
684
    /**
685
     * frames per sec multiplied by frame_rate_base.
686
     * for variable fps this is the precission, so if the timestamps 
687
     * can be specified in msec precssion then this is 1000*frame_rate_base
688
     * - encoding: MUST be set by user
689
     * - decoding: set by lavc. 0 or the frame_rate if available
690
     */
691
    int frame_rate;
692
    
693
    /**
694
     * picture width / height.
695
     * - encoding: MUST be set by user. 
696
     * - decoding: set by lavc.
697
     * Note, for compatibility its possible to set this instead of 
698
     * coded_width/height before decoding
699
     */
700
    int width, height;
701
    
702
#define FF_ASPECT_EXTENDED 15
703

    
704
    /**
705
     * the number of pictures in a group of pitures, or 0 for intra_only.
706
     * - encoding: set by user.
707
     * - decoding: unused
708
     */
709
    int gop_size;
710

    
711
    /**
712
     * pixel format, see PIX_FMT_xxx.
713
     * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
714
     *                    conversion is in order. This only works for
715
     *                    codecs with one supported pix_fmt, we should
716
     *                    do something for a generic case as well.
717
     * - decoding: set by lavc.
718
     */
719
    enum PixelFormat pix_fmt;
720
 
721
    /**
722
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
723
     * has to read frames at native frame rate.
724
     * - encoding: set by user.
725
     * - decoding: unused.
726
     */
727
    int rate_emu;
728
       
729
    /**
730
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
731
     * decoder to draw an horizontal band. It improve cache usage. Not
732
     * all codecs can do that. You must check the codec capabilities
733
     * before
734
     * - encoding: unused
735
     * - decoding: set by user.
736
     * @param height the height of the slice
737
     * @param y the y position of the slice
738
     * @param type 1->top field, 2->bottom field, 3->frame
739
     * @param offset offset into the AVFrame.data from which the slice should be read
740
     */
741
    void (*draw_horiz_band)(struct AVCodecContext *s,
742
                            const AVFrame *src, int offset[4],
743
                            int y, int type, int height);
744

    
745
    /* audio only */
746
    int sample_rate; ///< samples per sec 
747
    int channels;
748
    int sample_fmt;  ///< sample format, currenly unused 
749

    
750
    /* the following data should not be initialized */
751
    int frame_size;     ///< in samples, initialized when calling 'init' 
752
    int frame_number;   ///< audio or video frame number 
753
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
754
    
755
    /**
756
     * number of frames the decoded output will be delayed relative to 
757
     * the encoded input.
758
     * - encoding: set by lavc.
759
     * - decoding: unused
760
     */
761
    int delay;
762
    
763
    /* - encoding parameters */
764
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
765
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
766
    
767
    /**
768
     * minimum quantizer.
769
     * - encoding: set by user.
770
     * - decoding: unused
771
     */
772
    int qmin;
773

    
774
    /**
775
     * maximum quantizer.
776
     * - encoding: set by user.
777
     * - decoding: unused
778
     */
779
    int qmax;
780

    
781
    /**
782
     * maximum quantizer difference etween frames.
783
     * - encoding: set by user.
784
     * - decoding: unused
785
     */
786
    int max_qdiff;
787

    
788
    /**
789
     * maximum number of b frames between non b frames.
790
     * note: the output will be delayed by max_b_frames+1 relative to the input
791
     * - encoding: set by user.
792
     * - decoding: unused
793
     */
794
    int max_b_frames;
795

    
796
    /**
797
     * qscale factor between ip and b frames.
798
     * - encoding: set by user.
799
     * - decoding: unused
800
     */
801
    float b_quant_factor;
802
    
803
    /** obsolete FIXME remove */
804
    int rc_strategy;
805
    int b_frame_strategy;
806

    
807
    /**
808
     * hurry up amount.
809
     * - encoding: unused
810
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
811
     */
812
    int hurry_up;
813
    
814
    struct AVCodec *codec;
815
    
816
    void *priv_data;
817

    
818
    /* unused, FIXME remove*/
819
    int rtp_mode;
820
    
821
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
822
                            /* do it's best to deliver a chunk with size    */
823
                            /* below rtp_payload_size, the chunk will start */
824
                            /* with a start code on some codecs like H.263  */
825
                            /* This doesn't take account of any particular  */
826
                            /* headers inside the transmited RTP payload    */
827

    
828
    
829
    /* The RTP callcack: This function is called  */
830
    /* every time the encoder as a packet to send */
831
    /* Depends on the encoder if the data starts  */
832
    /* with a Start Code (it should) H.263 does   */
833
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number); 
834

    
835
    /* statistics, used for 2-pass encoding */
836
    int mv_bits;
837
    int header_bits;
838
    int i_tex_bits;
839
    int p_tex_bits;
840
    int i_count;
841
    int p_count;
842
    int skip_count;
843
    int misc_bits;
844
    
845
    /**
846
     * number of bits used for the previously encoded frame.
847
     * - encoding: set by lavc
848
     * - decoding: unused
849
     */
850
    int frame_bits;
851

    
852
    /**
853
     * private data of the user, can be used to carry app specific stuff.
854
     * - encoding: set by user
855
     * - decoding: set by user
856
     */
857
    void *opaque;
858

    
859
    char codec_name[32];
860
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
861
    enum CodecID codec_id; /* see CODEC_ID_xxx */
862
    
863
    /**
864
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
865
     * this is used to workaround some encoder bugs
866
     * - encoding: set by user, if not then the default based on codec_id will be used
867
     * - decoding: set by user, will be converted to upper case by lavc during init
868
     */
869
    unsigned int codec_tag;
870
    
871
    /**
872
     * workaround bugs in encoders which sometimes cannot be detected automatically.
873
     * - encoding: unused
874
     * - decoding: set by user
875
     */
876
    int workaround_bugs;
877
#define FF_BUG_AUTODETECT       1  ///< autodetection
878
#define FF_BUG_OLD_MSMPEG4      2
879
#define FF_BUG_XVID_ILACE       4
880
#define FF_BUG_UMP4             8
881
#define FF_BUG_NO_PADDING       16
882
#define FF_BUG_AMV              32
883
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
884
#define FF_BUG_QPEL_CHROMA      64
885
#define FF_BUG_STD_QPEL         128
886
#define FF_BUG_QPEL_CHROMA2     256
887
#define FF_BUG_DIRECT_BLOCKSIZE 512
888
#define FF_BUG_EDGE             1024
889
#define FF_BUG_HPEL_CHROMA      2048
890
#define FF_BUG_DC_CLIP          4096
891
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
892
        
893
    /**
894
     * luma single coeff elimination threshold.
895
     * - encoding: set by user
896
     * - decoding: unused
897
     */
898
    int luma_elim_threshold;
899
    
900
    /**
901
     * chroma single coeff elimination threshold.
902
     * - encoding: set by user
903
     * - decoding: unused
904
     */
905
    int chroma_elim_threshold;
906
    
907
    /**
908
     * strictly follow the std (MPEG4, ...).
909
     * - encoding: set by user
910
     * - decoding: unused
911
     */
912
    int strict_std_compliance;
913
    
914
    /**
915
     * qscale offset between ip and b frames.
916
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
917
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
918
     * - encoding: set by user.
919
     * - decoding: unused
920
     */
921
    float b_quant_offset;
922
    
923
    /**
924
     * error resilience higher values will detect more errors but may missdetect
925
     * some more or less valid parts as errors.
926
     * - encoding: unused
927
     * - decoding: set by user
928
     */
929
    int error_resilience;
930
#define FF_ER_CAREFULL        1
931
#define FF_ER_COMPLIANT       2
932
#define FF_ER_AGGRESSIVE      3
933
#define FF_ER_VERY_AGGRESSIVE 4
934
    
935
    /**
936
     * called at the beginning of each frame to get a buffer for it.
937
     * if pic.reference is set then the frame will be read later by lavc
938
     * avcodec_align_dimensions() should be used to find the required width and
939
     * height, as they normally need to be rounded up to the next multiple of 16
940
     * - encoding: unused
941
     * - decoding: set by lavc, user can override
942
     */
943
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
944
    
945
    /**
946
     * called to release buffers which where allocated with get_buffer.
947
     * a released buffer can be reused in get_buffer()
948
     * pic.data[*] must be set to NULL
949
     * - encoding: unused
950
     * - decoding: set by lavc, user can override
951
     */
952
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
953

    
954
    /**
955
     * if 1 the stream has a 1 frame delay during decoding.
956
     * - encoding: set by lavc
957
     * - decoding: set by lavc
958
     */
959
    int has_b_frames;
960
    
961
    int block_align; ///< used by some WAV based audio codecs
962
    
963
    int parse_only; /* - decoding only: if true, only parsing is done
964
                       (function avcodec_parse_frame()). The frame
965
                       data is returned. Only MPEG codecs support this now. */
966
    
967
    /**
968
     * 0-> h263 quant 1-> mpeg quant.
969
     * - encoding: set by user.
970
     * - decoding: unused
971
     */
972
    int mpeg_quant;
973
    
974
    /**
975
     * pass1 encoding statistics output buffer.
976
     * - encoding: set by lavc
977
     * - decoding: unused
978
     */
979
    char *stats_out;
980
    
981
    /**
982
     * pass2 encoding statistics input buffer.
983
     * concatenated stuff from stats_out of pass1 should be placed here
984
     * - encoding: allocated/set/freed by user
985
     * - decoding: unused
986
     */
987
    char *stats_in;
988
    
989
    /**
990
     * ratecontrol qmin qmax limiting method.
991
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
992
     * - encoding: set by user.
993
     * - decoding: unused
994
     */
995
    float rc_qsquish;
996

    
997
    float rc_qmod_amp;
998
    int rc_qmod_freq;
999
    
1000
    /**
1001
     * ratecontrol override, see RcOverride.
1002
     * - encoding: allocated/set/freed by user.
1003
     * - decoding: unused
1004
     */
1005
    RcOverride *rc_override;
1006
    int rc_override_count;
1007
    
1008
    /**
1009
     * rate control equation.
1010
     * - encoding: set by user
1011
     * - decoding: unused
1012
     */
1013
    char *rc_eq;
1014
    
1015
    /**
1016
     * maximum bitrate.
1017
     * - encoding: set by user.
1018
     * - decoding: unused
1019
     */
1020
    int rc_max_rate;
1021
    
1022
    /**
1023
     * minimum bitrate.
1024
     * - encoding: set by user.
1025
     * - decoding: unused
1026
     */
1027
    int rc_min_rate;
1028
    
1029
    /**
1030
     * decoder bitstream buffer size.
1031
     * - encoding: set by user.
1032
     * - decoding: unused
1033
     */
1034
    int rc_buffer_size;
1035
    float rc_buffer_aggressivity;
1036

    
1037
    /**
1038
     * qscale factor between p and i frames.
1039
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1040
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1041
     * - encoding: set by user.
1042
     * - decoding: unused
1043
     */
1044
    float i_quant_factor;
1045
    
1046
    /**
1047
     * qscale offset between p and i frames.
1048
     * - encoding: set by user.
1049
     * - decoding: unused
1050
     */
1051
    float i_quant_offset;
1052
    
1053
    /**
1054
     * initial complexity for pass1 ratecontrol.
1055
     * - encoding: set by user.
1056
     * - decoding: unused
1057
     */
1058
    float rc_initial_cplx;
1059

    
1060
    /**
1061
     * dct algorithm, see FF_DCT_* below.
1062
     * - encoding: set by user
1063
     * - decoding: unused
1064
     */
1065
    int dct_algo;
1066
#define FF_DCT_AUTO    0
1067
#define FF_DCT_FASTINT 1
1068
#define FF_DCT_INT     2
1069
#define FF_DCT_MMX     3
1070
#define FF_DCT_MLIB    4
1071
#define FF_DCT_ALTIVEC 5
1072
#define FF_DCT_FAAN    6
1073
    
1074
    /**
1075
     * luminance masking (0-> disabled).
1076
     * - encoding: set by user
1077
     * - decoding: unused
1078
     */
1079
    float lumi_masking;
1080
    
1081
    /**
1082
     * temporary complexity masking (0-> disabled).
1083
     * - encoding: set by user
1084
     * - decoding: unused
1085
     */
1086
    float temporal_cplx_masking;
1087
    
1088
    /**
1089
     * spatial complexity masking (0-> disabled).
1090
     * - encoding: set by user
1091
     * - decoding: unused
1092
     */
1093
    float spatial_cplx_masking;
1094
    
1095
    /**
1096
     * p block masking (0-> disabled).
1097
     * - encoding: set by user
1098
     * - decoding: unused
1099
     */
1100
    float p_masking;
1101

    
1102
    /**
1103
     * darkness masking (0-> disabled).
1104
     * - encoding: set by user
1105
     * - decoding: unused
1106
     */
1107
    float dark_masking;
1108
    
1109
    
1110
    /* for binary compatibility */
1111
    int unused;
1112
    
1113
    /**
1114
     * idct algorithm, see FF_IDCT_* below.
1115
     * - encoding: set by user
1116
     * - decoding: set by user
1117
     */
1118
    int idct_algo;
1119
#define FF_IDCT_AUTO         0
1120
#define FF_IDCT_INT          1
1121
#define FF_IDCT_SIMPLE       2
1122
#define FF_IDCT_SIMPLEMMX    3
1123
#define FF_IDCT_LIBMPEG2MMX  4
1124
#define FF_IDCT_PS2          5
1125
#define FF_IDCT_MLIB         6
1126
#define FF_IDCT_ARM          7
1127
#define FF_IDCT_ALTIVEC      8
1128
#define FF_IDCT_SH4          9
1129
#define FF_IDCT_SIMPLEARM    10
1130
#define FF_IDCT_H264         11
1131

    
1132
    /**
1133
     * slice count.
1134
     * - encoding: set by lavc
1135
     * - decoding: set by user (or 0)
1136
     */
1137
    int slice_count;
1138
    /**
1139
     * slice offsets in the frame in bytes.
1140
     * - encoding: set/allocated by lavc
1141
     * - decoding: set/allocated by user (or NULL)
1142
     */
1143
    int *slice_offset;
1144

    
1145
    /**
1146
     * error concealment flags.
1147
     * - encoding: unused
1148
     * - decoding: set by user
1149
     */
1150
    int error_concealment;
1151
#define FF_EC_GUESS_MVS   1
1152
#define FF_EC_DEBLOCK     2
1153

    
1154
    /**
1155
     * dsp_mask could be add used to disable unwanted CPU features
1156
     * CPU features (i.e. MMX, SSE. ...)
1157
     *
1158
     * with FORCE flag you may instead enable given CPU features
1159
     * (Dangerous: usable in case of misdetection, improper usage however will
1160
     * result into program crash)
1161
     */
1162
    unsigned dsp_mask;
1163
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1164
    /* lower 16 bits - CPU features */
1165
#ifdef HAVE_MMX
1166
#define FF_MM_MMX        0x0001 /* standard MMX */
1167
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1168
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1169
#define FF_MM_SSE        0x0008 /* SSE functions */
1170
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1171
#endif /* HAVE_MMX */
1172

    
1173
    /**
1174
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1175
     * - encoding: set by lavc
1176
     * - decoding: set by user
1177
     */
1178
     int bits_per_sample;
1179
    
1180
    /**
1181
     * prediction method (needed for huffyuv).
1182
     * - encoding: set by user
1183
     * - decoding: unused
1184
     */
1185
     int prediction_method;
1186
#define FF_PRED_LEFT   0
1187
#define FF_PRED_PLANE  1
1188
#define FF_PRED_MEDIAN 2
1189
    
1190
    /**
1191
     * sample aspect ratio (0 if unknown).
1192
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1193
     * - encoding: set by user.
1194
     * - decoding: set by lavc.
1195
     */
1196
    AVRational sample_aspect_ratio;
1197

    
1198
    /**
1199
     * the picture in the bitstream.
1200
     * - encoding: set by lavc
1201
     * - decoding: set by lavc
1202
     */
1203
    AVFrame *coded_frame;
1204

    
1205
    /**
1206
     * debug.
1207
     * - encoding: set by user.
1208
     * - decoding: set by user.
1209
     */
1210
    int debug;
1211
#define FF_DEBUG_PICT_INFO 1
1212
#define FF_DEBUG_RC        2
1213
#define FF_DEBUG_BITSTREAM 4
1214
#define FF_DEBUG_MB_TYPE   8
1215
#define FF_DEBUG_QP        16
1216
#define FF_DEBUG_MV        32
1217
#define FF_DEBUG_DCT_COEFF 0x00000040
1218
#define FF_DEBUG_SKIP      0x00000080
1219
#define FF_DEBUG_STARTCODE 0x00000100
1220
#define FF_DEBUG_PTS       0x00000200
1221
#define FF_DEBUG_ER        0x00000400
1222
#define FF_DEBUG_MMCO      0x00000800
1223
#define FF_DEBUG_BUGS      0x00001000
1224
#define FF_DEBUG_VIS_QP    0x00002000
1225
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1226
    
1227
    /**
1228
     * debug.
1229
     * - encoding: set by user.
1230
     * - decoding: set by user.
1231
     */
1232
    int debug_mv;
1233
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1234
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1235
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1236

    
1237
    /**
1238
     * error.
1239
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1240
     * - decoding: unused
1241
     */
1242
    uint64_t error[4];
1243
    
1244
    /**
1245
     * minimum MB quantizer.
1246
     * - encoding: set by user.
1247
     * - decoding: unused
1248
     */
1249
    int mb_qmin;
1250

    
1251
    /**
1252
     * maximum MB quantizer.
1253
     * - encoding: set by user.
1254
     * - decoding: unused
1255
     */
1256
    int mb_qmax;
1257
    
1258
    /**
1259
     * motion estimation compare function.
1260
     * - encoding: set by user.
1261
     * - decoding: unused
1262
     */
1263
    int me_cmp;
1264
    /**
1265
     * subpixel motion estimation compare function.
1266
     * - encoding: set by user.
1267
     * - decoding: unused
1268
     */
1269
    int me_sub_cmp;
1270
    /**
1271
     * macroblock compare function (not supported yet).
1272
     * - encoding: set by user.
1273
     * - decoding: unused
1274
     */
1275
    int mb_cmp;
1276
    /**
1277
     * interlaced dct compare function
1278
     * - encoding: set by user.
1279
     * - decoding: unused
1280
     */
1281
    int ildct_cmp;
1282
#define FF_CMP_SAD  0
1283
#define FF_CMP_SSE  1
1284
#define FF_CMP_SATD 2
1285
#define FF_CMP_DCT  3
1286
#define FF_CMP_PSNR 4
1287
#define FF_CMP_BIT  5
1288
#define FF_CMP_RD   6
1289
#define FF_CMP_ZERO 7
1290
#define FF_CMP_VSAD 8
1291
#define FF_CMP_VSSE 9
1292
#define FF_CMP_NSSE 10
1293
#define FF_CMP_W53  11
1294
#define FF_CMP_W97  12
1295
#define FF_CMP_CHROMA 256
1296
    
1297
    /**
1298
     * ME diamond size & shape.
1299
     * - encoding: set by user.
1300
     * - decoding: unused
1301
     */
1302
    int dia_size;
1303

    
1304
    /**
1305
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1306
     * - encoding: set by user.
1307
     * - decoding: unused
1308
     */
1309
    int last_predictor_count;
1310

    
1311
    /**
1312
     * pre pass for motion estimation.
1313
     * - encoding: set by user.
1314
     * - decoding: unused
1315
     */
1316
    int pre_me;
1317

    
1318
    /**
1319
     * motion estimation pre pass compare function.
1320
     * - encoding: set by user.
1321
     * - decoding: unused
1322
     */
1323
    int me_pre_cmp;
1324

    
1325
    /**
1326
     * ME pre pass diamond size & shape.
1327
     * - encoding: set by user.
1328
     * - decoding: unused
1329
     */
1330
    int pre_dia_size;
1331

    
1332
    /**
1333
     * subpel ME quality.
1334
     * - encoding: set by user.
1335
     * - decoding: unused
1336
     */
1337
    int me_subpel_quality;
1338

    
1339
    /**
1340
     * callback to negotiate the pixelFormat.
1341
     * @param fmt is the list of formats which are supported by the codec,
1342
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1343
     * the first is allways the native one
1344
     * @return the choosen format
1345
     * - encoding: unused
1346
     * - decoding: set by user, if not set then the native format will always be choosen
1347
     */
1348
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1349

    
1350
    /**
1351
     * DTG active format information (additionnal aspect ratio
1352
     * information only used in DVB MPEG2 transport streams). 0 if
1353
     * not set.
1354
     * 
1355
     * - encoding: unused.
1356
     * - decoding: set by decoder 
1357
     */
1358
    int dtg_active_format;
1359
#define FF_DTG_AFD_SAME         8
1360
#define FF_DTG_AFD_4_3          9
1361
#define FF_DTG_AFD_16_9         10
1362
#define FF_DTG_AFD_14_9         11
1363
#define FF_DTG_AFD_4_3_SP_14_9  13
1364
#define FF_DTG_AFD_16_9_SP_14_9 14
1365
#define FF_DTG_AFD_SP_4_3       15
1366

    
1367
    /**
1368
     * Maximum motion estimation search range in subpel units.
1369
     * if 0 then no limit
1370
     * 
1371
     * - encoding: set by user.
1372
     * - decoding: unused.
1373
     */
1374
    int me_range;
1375

    
1376
    /**
1377
     * frame_rate_base.
1378
     * for variable fps this is 1
1379
     * - encoding: set by user.
1380
     * - decoding: set by lavc.
1381
     * @todo move this after frame_rate
1382
     */
1383

    
1384
    int frame_rate_base;
1385
    /**
1386
     * intra quantizer bias.
1387
     * - encoding: set by user.
1388
     * - decoding: unused
1389
     */
1390
    int intra_quant_bias;
1391
#define FF_DEFAULT_QUANT_BIAS 999999
1392
    
1393
    /**
1394
     * inter quantizer bias.
1395
     * - encoding: set by user.
1396
     * - decoding: unused
1397
     */
1398
    int inter_quant_bias;
1399

    
1400
    /**
1401
     * color table ID.
1402
     * - encoding: unused.
1403
     * - decoding: which clrtable should be used for 8bit RGB images
1404
     *             table have to be stored somewhere FIXME
1405
     */
1406
    int color_table_id;
1407
    
1408
    /**
1409
     * internal_buffer count. 
1410
     * Dont touch, used by lavc default_get_buffer()
1411
     */
1412
    int internal_buffer_count;
1413
    
1414
    /**
1415
     * internal_buffers. 
1416
     * Dont touch, used by lavc default_get_buffer()
1417
     */
1418
    void *internal_buffer;
1419

    
1420
#define FF_LAMBDA_SHIFT 7
1421
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1422
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1423
#define FF_LAMBDA_MAX (256*128-1)
1424

    
1425
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1426
    /**
1427
     * global quality for codecs which cannot change it per frame.
1428
     * this should be proportional to MPEG1/2/4 qscale.
1429
     * - encoding: set by user.
1430
     * - decoding: unused
1431
     */
1432
    int global_quality;
1433
    
1434
#define FF_CODER_TYPE_VLC   0
1435
#define FF_CODER_TYPE_AC    1
1436
    /**
1437
     * coder type
1438
     * - encoding: set by user.
1439
     * - decoding: unused
1440
     */
1441
    int coder_type;
1442

    
1443
    /**
1444
     * context model
1445
     * - encoding: set by user.
1446
     * - decoding: unused
1447
     */
1448
    int context_model;
1449
    
1450
    /**
1451
     * slice flags
1452
     * - encoding: unused
1453
     * - decoding: set by user.
1454
     */
1455
    int slice_flags;
1456
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1457
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1458
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1459

    
1460
    /**
1461
     * XVideo Motion Acceleration
1462
     * - encoding: forbidden
1463
     * - decoding: set by decoder
1464
     */
1465
    int xvmc_acceleration;
1466
    
1467
    /**
1468
     * macroblock decision mode
1469
     * - encoding: set by user.
1470
     * - decoding: unused
1471
     */
1472
    int mb_decision;
1473
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1474
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1475
#define FF_MB_DECISION_RD     2        ///< rate distoration
1476

    
1477
    /**
1478
     * custom intra quantization matrix
1479
     * - encoding: set by user, can be NULL
1480
     * - decoding: set by lavc
1481
     */
1482
    uint16_t *intra_matrix;
1483

    
1484
    /**
1485
     * custom inter quantization matrix
1486
     * - encoding: set by user, can be NULL
1487
     * - decoding: set by lavc
1488
     */
1489
    uint16_t *inter_matrix;
1490
    
1491
    /**
1492
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1493
     * this is used to workaround some encoder bugs
1494
     * - encoding: unused
1495
     * - decoding: set by user, will be converted to upper case by lavc during init
1496
     */
1497
    unsigned int stream_codec_tag;
1498

    
1499
    /**
1500
     * scene change detection threshold.
1501
     * 0 is default, larger means fewer detected scene changes
1502
     * - encoding: set by user.
1503
     * - decoding: unused
1504
     */
1505
    int scenechange_threshold;
1506

    
1507
    /**
1508
     * minimum lagrange multipler
1509
     * - encoding: set by user.
1510
     * - decoding: unused
1511
     */
1512
    int lmin;
1513

    
1514
    /**
1515
     * maximum lagrange multipler
1516
     * - encoding: set by user.
1517
     * - decoding: unused
1518
     */
1519
    int lmax;
1520

    
1521
    /**
1522
     * Palette control structure
1523
     * - encoding: ??? (no palette-enabled encoder yet)
1524
     * - decoding: set by user.
1525
     */
1526
    struct AVPaletteControl *palctrl;
1527

    
1528
    /**
1529
     * noise reduction strength
1530
     * - encoding: set by user.
1531
     * - decoding: unused
1532
     */
1533
    int noise_reduction;
1534
    
1535
    /**
1536
     * called at the beginning of a frame to get cr buffer for it.
1537
     * buffer type (size, hints) must be the same. lavc won't check it.
1538
     * lavc will pass previous buffer in pic, function should return
1539
     * same buffer or new buffer with old frame "painted" into it.
1540
     * if pic.data[0] == NULL must behave like get_buffer().
1541
     * - encoding: unused
1542
     * - decoding: set by lavc, user can override
1543
     */
1544
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1545

    
1546
    /**
1547
     * number of bits which should be loaded into the rc buffer before decoding starts
1548
     * - encoding: set by user.
1549
     * - decoding: unused
1550
     */
1551
    int rc_initial_buffer_occupancy;
1552

    
1553
    /**
1554
     *
1555
     * - encoding: set by user.
1556
     * - decoding: unused
1557
     */
1558
    int inter_threshold;
1559

    
1560
    /**
1561
     * CODEC_FLAG2_*.
1562
     * - encoding: set by user.
1563
     * - decoding: set by user.
1564
     */
1565
    int flags2;
1566

    
1567
    /**
1568
     * simulates errors in the bitstream to test error concealment.
1569
     * - encoding: set by user.
1570
     * - decoding: unused.
1571
     */
1572
    int error_rate;
1573
    
1574
    /**
1575
     * MP3 antialias algorithm, see FF_AA_* below.
1576
     * - encoding: unused
1577
     * - decoding: set by user
1578
     */
1579
    int antialias_algo;
1580
#define FF_AA_AUTO    0
1581
#define FF_AA_FASTINT 1 //not implemented yet
1582
#define FF_AA_INT     2
1583
#define FF_AA_FLOAT   3
1584
    /**
1585
     * Quantizer noise shaping.
1586
     * - encoding: set by user
1587
     * - decoding: unused
1588
     */
1589
    int quantizer_noise_shaping;
1590

    
1591
    /**
1592
     * Thread count.
1593
     * is used to decide how many independant tasks should be passed to execute()
1594
     * - encoding: set by user
1595
     * - decoding: set by user
1596
     */
1597
    int thread_count;
1598
    
1599
    /**
1600
     * the codec may call this to execute several independant things. it will return only after
1601
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1602
     * default implementation will execute the parts serially
1603
     * @param count the number of things to execute
1604
     * - encoding: set by lavc, user can override
1605
     * - decoding: set by lavc, user can override
1606
     */
1607
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1608
    
1609
    /**
1610
     * Thread opaque.
1611
     * can be used by execute() to store some per AVCodecContext stuff.
1612
     * - encoding: set by execute()
1613
     * - decoding: set by execute()
1614
     */
1615
    void *thread_opaque;
1616

    
1617
    /**
1618
     * Motion estimation threshold. under which no motion estimation is 
1619
     * performed, but instead the user specified motion vectors are used
1620
     * 
1621
     * - encoding: set by user
1622
     * - decoding: unused
1623
     */
1624
     int me_threshold;
1625

    
1626
    /**
1627
     * Macroblock threshold. under which the user specified macroblock types will be used
1628
     * - encoding: set by user
1629
     * - decoding: unused
1630
     */
1631
     int mb_threshold;
1632

    
1633
    /**
1634
     * precision of the intra dc coefficient - 8.
1635
     * - encoding: set by user
1636
     * - decoding: unused
1637
     */
1638
     int intra_dc_precision;
1639

    
1640
    /**
1641
     * noise vs. sse weight for the nsse comparsion function.
1642
     * - encoding: set by user
1643
     * - decoding: unused
1644
     */
1645
     int nsse_weight;
1646

    
1647
    /**
1648
     * number of macroblock rows at the top which are skiped.
1649
     * - encoding: unused
1650
     * - decoding: set by user
1651
     */
1652
     int skip_top;
1653

    
1654
    /**
1655
     * number of macroblock rows at the bottom which are skiped.
1656
     * - encoding: unused
1657
     * - decoding: set by user
1658
     */
1659
     int skip_bottom;
1660

    
1661
    /**
1662
     * profile
1663
     * - encoding: set by user
1664
     * - decoding: set by lavc
1665
     */
1666
     int profile;
1667
#define FF_PROFILE_UNKNOWN -99
1668

    
1669
    /**
1670
     * level
1671
     * - encoding: set by user
1672
     * - decoding: set by lavc
1673
     */
1674
     int level;
1675
#define FF_LEVEL_UNKNOWN -99
1676

    
1677
    /**
1678
     * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1679
     * - encoding: unused
1680
     * - decoding: set by user
1681
     */
1682
     int lowres;
1683

    
1684
    /**
1685
     * bistream width / height. may be different from width/height if lowres
1686
     * or other things are used
1687
     * - encoding: unused
1688
     * - decoding: set by user before init if known, codec should override / dynamically change if needed
1689
     */
1690
    int coded_width, coded_height;
1691
} AVCodecContext;
1692

    
1693

    
1694
/**
1695
 * AVOption.
1696
 */
1697
typedef struct AVOption {
1698
    /** options' name */
1699
    const char *name; /* if name is NULL, it indicates a link to next */
1700
    /** short English text help or const struct AVOption* subpointer */
1701
    const char *help; //        const struct AVOption* sub;
1702
    /** offset to context structure where the parsed value should be stored */
1703
    int offset;
1704
    /** options' type */
1705
    int type;
1706
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1707
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1708
#define FF_OPT_TYPE_INT 3       ///< integer
1709
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1710
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1711
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1712
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1713
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1714
    /** min value  (min == max   ->  no limits) */
1715
    double min;
1716
    /** maximum value for double/int */
1717
    double max;
1718
    /** default boo [0,1]l/double/int value */
1719
    double defval;
1720
    /**
1721
     * default string value (with optional semicolon delimited extra option-list
1722
     * i.e.   option1;option2;option3
1723
     * defval might select other then first argument as default
1724
     */
1725
    const char *defstr;
1726
#define FF_OPT_MAX_DEPTH 10
1727
} AVOption;
1728

    
1729
/**
1730
 * Parse option(s) and sets fields in passed structure
1731
 * @param strct        structure where the parsed results will be written
1732
 * @param list  list with AVOptions
1733
 * @param opts        string with options for parsing
1734
 */
1735
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1736

    
1737

    
1738
/**
1739
 * AVCodec.
1740
 */
1741
typedef struct AVCodec {
1742
    const char *name;
1743
    enum CodecType type;
1744
    enum CodecID id;
1745
    int priv_data_size;
1746
    int (*init)(AVCodecContext *);
1747
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1748
    int (*close)(AVCodecContext *);
1749
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1750
                  uint8_t *buf, int buf_size);
1751
    int capabilities;
1752
    const AVOption *options;
1753
    struct AVCodec *next;
1754
    void (*flush)(AVCodecContext *);
1755
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1756
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1757
} AVCodec;
1758

    
1759
/**
1760
 * four components are given, that's all.
1761
 * the last component is alpha
1762
 */
1763
typedef struct AVPicture {
1764
    uint8_t *data[4];
1765
    int linesize[4];       ///< number of bytes per line
1766
} AVPicture;
1767

    
1768
/**
1769
 * AVPaletteControl
1770
 * This structure defines a method for communicating palette changes
1771
 * between and demuxer and a decoder.
1772
 */
1773
#define AVPALETTE_SIZE 1024
1774
#define AVPALETTE_COUNT 256
1775
typedef struct AVPaletteControl {
1776

    
1777
    /* demuxer sets this to 1 to indicate the palette has changed;
1778
     * decoder resets to 0 */
1779
    int palette_changed;
1780

    
1781
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1782
     * the individual palette components should be on a 8-bit scale; if
1783
     * the palette data comes from a IBM VGA native format, the component
1784
     * data is probably 6 bits in size and needs to be scaled */
1785
    unsigned int palette[AVPALETTE_COUNT];
1786

    
1787
} AVPaletteControl;
1788

    
1789
extern AVCodec ac3_encoder;
1790
extern AVCodec mp2_encoder;
1791
extern AVCodec mp3lame_encoder;
1792
extern AVCodec oggvorbis_encoder;
1793
extern AVCodec faac_encoder;
1794
extern AVCodec xvid_encoder;
1795
extern AVCodec mpeg1video_encoder;
1796
extern AVCodec mpeg2video_encoder;
1797
extern AVCodec h261_encoder;
1798
extern AVCodec h263_encoder;
1799
extern AVCodec h263p_encoder;
1800
extern AVCodec flv_encoder;
1801
extern AVCodec rv10_encoder;
1802
extern AVCodec rv20_encoder;
1803
extern AVCodec dvvideo_encoder;
1804
extern AVCodec mjpeg_encoder;
1805
extern AVCodec ljpeg_encoder;
1806
extern AVCodec png_encoder;
1807
extern AVCodec ppm_encoder;
1808
extern AVCodec pgm_encoder;
1809
extern AVCodec pgmyuv_encoder;
1810
extern AVCodec pbm_encoder;
1811
extern AVCodec pam_encoder;
1812
extern AVCodec mpeg4_encoder;
1813
extern AVCodec msmpeg4v1_encoder;
1814
extern AVCodec msmpeg4v2_encoder;
1815
extern AVCodec msmpeg4v3_encoder;
1816
extern AVCodec wmv1_encoder;
1817
extern AVCodec wmv2_encoder;
1818
extern AVCodec huffyuv_encoder;
1819
extern AVCodec h264_encoder;
1820
extern AVCodec asv1_encoder;
1821
extern AVCodec asv2_encoder;
1822
extern AVCodec vcr1_encoder;
1823
extern AVCodec ffv1_encoder;
1824
extern AVCodec snow_encoder;
1825
extern AVCodec mdec_encoder;
1826
extern AVCodec zlib_encoder;
1827
extern AVCodec sonic_encoder;
1828
extern AVCodec sonic_ls_encoder;
1829
extern AVCodec svq1_encoder;
1830

    
1831
extern AVCodec h263_decoder;
1832
extern AVCodec h261_decoder;
1833
extern AVCodec mpeg4_decoder;
1834
extern AVCodec msmpeg4v1_decoder;
1835
extern AVCodec msmpeg4v2_decoder;
1836
extern AVCodec msmpeg4v3_decoder;
1837
extern AVCodec wmv1_decoder;
1838
extern AVCodec wmv2_decoder;
1839
extern AVCodec mpeg1video_decoder;
1840
extern AVCodec mpeg2video_decoder;
1841
extern AVCodec mpegvideo_decoder;
1842
extern AVCodec mpeg_xvmc_decoder;
1843
extern AVCodec h263i_decoder;
1844
extern AVCodec flv_decoder;
1845
extern AVCodec rv10_decoder;
1846
extern AVCodec rv20_decoder;
1847
extern AVCodec svq1_decoder;
1848
extern AVCodec svq3_decoder;
1849
extern AVCodec dvvideo_decoder;
1850
extern AVCodec wmav1_decoder;
1851
extern AVCodec wmav2_decoder;
1852
extern AVCodec mjpeg_decoder;
1853
extern AVCodec mjpegb_decoder;
1854
extern AVCodec sp5x_decoder;
1855
extern AVCodec png_decoder;
1856
extern AVCodec mp2_decoder;
1857
extern AVCodec mp3_decoder;
1858
extern AVCodec mace3_decoder;
1859
extern AVCodec mace6_decoder;
1860
extern AVCodec huffyuv_decoder;
1861
extern AVCodec oggvorbis_decoder;
1862
extern AVCodec cyuv_decoder;
1863
extern AVCodec h264_decoder;
1864
extern AVCodec indeo3_decoder;
1865
extern AVCodec vp3_decoder;
1866
extern AVCodec theora_decoder;
1867
extern AVCodec amr_nb_decoder;
1868
extern AVCodec amr_nb_encoder;
1869
extern AVCodec amr_wb_encoder;
1870
extern AVCodec amr_wb_decoder;
1871
extern AVCodec aac_decoder;
1872
extern AVCodec mpeg4aac_decoder;
1873
extern AVCodec asv1_decoder;
1874
extern AVCodec asv2_decoder;
1875
extern AVCodec vcr1_decoder;
1876
extern AVCodec cljr_decoder;
1877
extern AVCodec ffv1_decoder;
1878
extern AVCodec snow_decoder;
1879
extern AVCodec fourxm_decoder;
1880
extern AVCodec mdec_decoder;
1881
extern AVCodec roq_decoder;
1882
extern AVCodec interplay_video_decoder;
1883
extern AVCodec xan_wc3_decoder;
1884
extern AVCodec rpza_decoder;
1885
extern AVCodec cinepak_decoder;
1886
extern AVCodec msrle_decoder;
1887
extern AVCodec msvideo1_decoder;
1888
extern AVCodec vqa_decoder;
1889
extern AVCodec idcin_decoder;
1890
extern AVCodec eightbps_decoder;
1891
extern AVCodec smc_decoder;
1892
extern AVCodec flic_decoder;
1893
extern AVCodec vmdvideo_decoder;
1894
extern AVCodec vmdaudio_decoder;
1895
extern AVCodec truemotion1_decoder;
1896
extern AVCodec mszh_decoder;
1897
extern AVCodec zlib_decoder;
1898
extern AVCodec ra_144_decoder;
1899
extern AVCodec ra_288_decoder;
1900
extern AVCodec roq_dpcm_decoder;
1901
extern AVCodec interplay_dpcm_decoder;
1902
extern AVCodec xan_dpcm_decoder;
1903
extern AVCodec sol_dpcm_decoder;
1904
extern AVCodec sonic_decoder;
1905
extern AVCodec qtrle_decoder;
1906
extern AVCodec flac_decoder;
1907
extern AVCodec tscc_decoder;
1908
extern AVCodec ulti_decoder;
1909
extern AVCodec qdraw_decoder;
1910
extern AVCodec xl_decoder;
1911
extern AVCodec qpeg_decoder;
1912

    
1913
/* pcm codecs */
1914
#define PCM_CODEC(id, name) \
1915
extern AVCodec name ## _decoder; \
1916
extern AVCodec name ## _encoder
1917

    
1918
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1919
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1920
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1921
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1922
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1923
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1924
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1925
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1926

    
1927
/* adpcm codecs */
1928

    
1929
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1930
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1931
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1932
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1933
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1934
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1935
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1936
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1937
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1938
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1939
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1940
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1941
PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
1942

    
1943
#undef PCM_CODEC
1944

    
1945
/* dummy raw video codec */
1946
extern AVCodec rawvideo_encoder;
1947
extern AVCodec rawvideo_decoder;
1948

    
1949
/* the following codecs use external GPL libs */
1950
extern AVCodec ac3_decoder;
1951
extern AVCodec dts_decoder;
1952

    
1953
/* resample.c */
1954

    
1955
struct ReSampleContext;
1956
struct AVResampleContext;
1957

    
1958
typedef struct ReSampleContext ReSampleContext;
1959

    
1960
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1961
                                     int output_rate, int input_rate);
1962
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1963
void audio_resample_close(ReSampleContext *s);
1964

    
1965
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
1966
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
1967
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
1968
void av_resample_close(struct AVResampleContext *c);
1969

    
1970
/* YUV420 format is assumed ! */
1971

    
1972
struct ImgReSampleContext;
1973

    
1974
typedef struct ImgReSampleContext ImgReSampleContext;
1975

    
1976
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1977
                                      int input_width, int input_height);
1978

    
1979
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1980
                                      int iwidth, int iheight,
1981
                                      int topBand, int bottomBand,
1982
                                      int leftBand, int rightBand,
1983
                                      int padtop, int padbottom,
1984
                                      int padleft, int padright);
1985

    
1986

    
1987
void img_resample(ImgReSampleContext *s, 
1988
                  AVPicture *output, const AVPicture *input);
1989

    
1990
void img_resample_close(ImgReSampleContext *s);
1991

    
1992
/**
1993
 * Allocate memory for a picture.  Call avpicture_free to free it.
1994
 *
1995
 * @param picture the picture to be filled in.
1996
 * @param pix_fmt the format of the picture.
1997
 * @param width the width of the picture.
1998
 * @param height the height of the picture.
1999
 * @return 0 if successful, -1 if not.
2000
 */
2001
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2002

    
2003
/* Free a picture previously allocated by avpicture_alloc. */
2004
void avpicture_free(AVPicture *picture);
2005

    
2006
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2007
                   int pix_fmt, int width, int height);
2008
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2009
                     unsigned char *dest, int dest_size);
2010
int avpicture_get_size(int pix_fmt, int width, int height);
2011
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2012
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2013
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2014
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2015
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2016

    
2017
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
2018
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
2019
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
2020
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
2021
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
2022
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2023

    
2024
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2025
                             int has_alpha);
2026
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2027
                              int has_alpha, int *loss_ptr);
2028

    
2029
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2030
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2031
int img_get_alpha_info(const AVPicture *src,
2032
                       int pix_fmt, int width, int height);
2033

    
2034
/* convert among pixel formats */
2035
int img_convert(AVPicture *dst, int dst_pix_fmt,
2036
                const AVPicture *src, int pix_fmt, 
2037
                int width, int height);
2038

    
2039
/* deinterlace a picture */
2040
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2041
                          int pix_fmt, int width, int height);
2042

    
2043
/* external high level API */
2044

    
2045
extern AVCodec *first_avcodec;
2046

    
2047
/* returns LIBAVCODEC_VERSION_INT constant */
2048
unsigned avcodec_version(void);
2049
/* returns LIBAVCODEC_BUILD constant */
2050
unsigned avcodec_build(void);
2051
void avcodec_init(void);
2052

    
2053
void register_avcodec(AVCodec *format);
2054
AVCodec *avcodec_find_encoder(enum CodecID id);
2055
AVCodec *avcodec_find_encoder_by_name(const char *name);
2056
AVCodec *avcodec_find_decoder(enum CodecID id);
2057
AVCodec *avcodec_find_decoder_by_name(const char *name);
2058
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2059

    
2060
void avcodec_get_context_defaults(AVCodecContext *s);
2061
AVCodecContext *avcodec_alloc_context(void);
2062
void avcodec_get_frame_defaults(AVFrame *pic);
2063
AVFrame *avcodec_alloc_frame(void);
2064

    
2065
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2066
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2067
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2068
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2069
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2070

    
2071
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2072
void avcodec_thread_free(AVCodecContext *s);
2073
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2074
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2075
//FIXME func typedef
2076

    
2077
/**
2078
 * opens / inits the AVCodecContext.
2079
 * not thread save!
2080
 */
2081
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2082

    
2083
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
2084
                         int *frame_size_ptr,
2085
                         uint8_t *buf, int buf_size);
2086
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
2087
                         int *got_picture_ptr,
2088
                         uint8_t *buf, int buf_size);
2089
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
2090
                        int *data_size_ptr,
2091
                        uint8_t *buf, int buf_size);
2092
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2093
                         const short *samples);
2094
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2095
                         const AVFrame *pict);
2096

    
2097
int avcodec_close(AVCodecContext *avctx);
2098

    
2099
void avcodec_register_all(void);
2100

    
2101
void avcodec_flush_buffers(AVCodecContext *avctx);
2102

    
2103
/* misc usefull functions */
2104

    
2105
/**
2106
 * returns a single letter to describe the picture type
2107
 */
2108
char av_get_pict_type_char(int pict_type);
2109

    
2110
/**
2111
 * reduce a fraction.
2112
 * this is usefull for framerate calculations
2113
 * @param max the maximum allowed for dst_nom & dst_den
2114
 * @return 1 if exact, 0 otherwise
2115
 */
2116
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2117

    
2118
/**
2119
 * rescale a 64bit integer with rounding to nearest.
2120
 * a simple a*b/c isnt possible as it can overflow
2121
 */
2122
int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2123

    
2124
/**
2125
 * rescale a 64bit integer with specified rounding.
2126
 * a simple a*b/c isnt possible as it can overflow
2127
 */
2128
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
2129

    
2130
/* frame parsing */
2131
typedef struct AVCodecParserContext {
2132
    void *priv_data;
2133
    struct AVCodecParser *parser;
2134
    int64_t frame_offset; /* offset of the current frame */
2135
    int64_t cur_offset; /* current offset 
2136
                           (incremented by each av_parser_parse()) */
2137
    int64_t last_frame_offset; /* offset of the last frame */
2138
    /* video info */
2139
    int pict_type; /* XXX: put it back in AVCodecContext */
2140
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2141
    int64_t pts;     /* pts of the current frame */
2142
    int64_t dts;     /* dts of the current frame */
2143

    
2144
    /* private data */
2145
    int64_t last_pts;
2146
    int64_t last_dts;
2147
    int fetch_timestamp;
2148

    
2149
#define AV_PARSER_PTS_NB 4
2150
    int cur_frame_start_index;
2151
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2152
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2153
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2154
} AVCodecParserContext;
2155

    
2156
typedef struct AVCodecParser {
2157
    int codec_ids[5]; /* several codec IDs are permitted */
2158
    int priv_data_size;
2159
    int (*parser_init)(AVCodecParserContext *s);
2160
    int (*parser_parse)(AVCodecParserContext *s, 
2161
                        AVCodecContext *avctx,
2162
                        uint8_t **poutbuf, int *poutbuf_size, 
2163
                        const uint8_t *buf, int buf_size);
2164
    void (*parser_close)(AVCodecParserContext *s);
2165
    struct AVCodecParser *next;
2166
} AVCodecParser;
2167

    
2168
extern AVCodecParser *av_first_parser;
2169

    
2170
void av_register_codec_parser(AVCodecParser *parser);
2171
AVCodecParserContext *av_parser_init(int codec_id);
2172
int av_parser_parse(AVCodecParserContext *s, 
2173
                    AVCodecContext *avctx,
2174
                    uint8_t **poutbuf, int *poutbuf_size, 
2175
                    const uint8_t *buf, int buf_size,
2176
                    int64_t pts, int64_t dts);
2177
void av_parser_close(AVCodecParserContext *s);
2178

    
2179
extern AVCodecParser mpegvideo_parser;
2180
extern AVCodecParser mpeg4video_parser;
2181
extern AVCodecParser h261_parser;
2182
extern AVCodecParser h263_parser;
2183
extern AVCodecParser h264_parser;
2184
extern AVCodecParser mjpeg_parser;
2185
extern AVCodecParser pnm_parser;
2186
extern AVCodecParser mpegaudio_parser;
2187
extern AVCodecParser ac3_parser;
2188

    
2189
/* memory */
2190
void *av_malloc(unsigned int size);
2191
void *av_mallocz(unsigned int size);
2192
void *av_realloc(void *ptr, unsigned int size);
2193
void av_free(void *ptr);
2194
char *av_strdup(const char *s);
2195
void av_freep(void *ptr);
2196
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2197
/* for static data only */
2198
/* call av_free_static to release all staticaly allocated tables */
2199
void av_free_static(void);
2200
void *av_mallocz_static(unsigned int size);
2201
void *av_realloc_static(void *ptr, unsigned int size);
2202

    
2203
/* add by bero : in adx.c */
2204
int is_adx(const unsigned char *buf,size_t bufsize);
2205

    
2206
void img_copy(AVPicture *dst, const AVPicture *src,
2207
              int pix_fmt, int width, int height);
2208

    
2209
/* av_log API */
2210

    
2211
#include <stdarg.h>
2212

    
2213
#define AV_LOG_QUIET -1
2214
#define AV_LOG_ERROR 0
2215
#define AV_LOG_INFO 1
2216
#define AV_LOG_DEBUG 2
2217

    
2218
#ifdef __GNUC__
2219
extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2220
#else
2221
extern void av_log(void*, int level, const char *fmt, ...);
2222
#endif
2223

    
2224
extern void av_vlog(void*, int level, const char *fmt, va_list);
2225
extern int av_log_get_level(void);
2226
extern void av_log_set_level(int);
2227
extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2228

    
2229
/* endian macros */
2230
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2231
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2232
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2233
                   (((uint8_t*)(x))[1] << 16) | \
2234
                   (((uint8_t*)(x))[2] << 8) | \
2235
                    ((uint8_t*)(x))[3])
2236
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2237
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2238
                   (((uint8_t*)(x))[2] << 16) | \
2239
                   (((uint8_t*)(x))[1] << 8) | \
2240
                    ((uint8_t*)(x))[0])
2241
#endif
2242

    
2243
#ifdef __cplusplus
2244
}
2245
#endif
2246

    
2247
#endif /* AVCODEC_H */