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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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#define FFMPEG_VERSION_INT     0x000408
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#define FFMPEG_VERSION         "0.4.8"
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#define LIBAVCODEC_BUILD       4679
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#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
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#define LIBAVCODEC_VERSION     FFMPEG_VERSION
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#define AV_STRINGIFY(s)        AV_TOSTRING(s)
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#define AV_TOSTRING(s) #s
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#define LIBAVCODEC_IDENT        "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
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enum CodecID {
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    CODEC_ID_NONE, 
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    CODEC_ID_MPEG1VIDEO,
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    CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
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    CODEC_ID_MPEG2VIDEO_XVMC,
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    CODEC_ID_H263,
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    CODEC_ID_RV10,
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    CODEC_ID_MP2,
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    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
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    CODEC_ID_VORBIS,
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    CODEC_ID_AC3,
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    CODEC_ID_MJPEG,
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    CODEC_ID_MJPEGB,
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    CODEC_ID_LJPEG,
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    CODEC_ID_MPEG4,
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    CODEC_ID_RAWVIDEO,
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    CODEC_ID_MSMPEG4V1,
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    CODEC_ID_MSMPEG4V2,
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    CODEC_ID_MSMPEG4V3,
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    CODEC_ID_WMV1,
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    CODEC_ID_WMV2,
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    CODEC_ID_H263P,
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    CODEC_ID_H263I,
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    CODEC_ID_FLV1,
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    CODEC_ID_SVQ1,
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    CODEC_ID_SVQ3,
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    CODEC_ID_DVVIDEO,
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    CODEC_ID_DVAUDIO,
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    CODEC_ID_WMAV1,
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    CODEC_ID_WMAV2,
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    CODEC_ID_MACE3,
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    CODEC_ID_MACE6,
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    CODEC_ID_HUFFYUV,
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    CODEC_ID_CYUV,
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    CODEC_ID_H264,
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    CODEC_ID_INDEO3,
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    CODEC_ID_VP3,
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    CODEC_ID_AAC,
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    CODEC_ID_MPEG4AAC,
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    CODEC_ID_ASV1,
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    CODEC_ID_ASV2,
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    CODEC_ID_FFV1,
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    CODEC_ID_4XM,
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    CODEC_ID_VCR1,
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    CODEC_ID_CLJR,
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    CODEC_ID_MDEC,
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    CODEC_ID_ROQ,
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    CODEC_ID_INTERPLAY_VIDEO,
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    CODEC_ID_XAN_WC3,
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    CODEC_ID_XAN_WC4,
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    /* various pcm "codecs" */
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    CODEC_ID_PCM_S16LE,
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    CODEC_ID_PCM_S16BE,
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    CODEC_ID_PCM_U16LE,
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    CODEC_ID_PCM_U16BE,
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    CODEC_ID_PCM_S8,
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    CODEC_ID_PCM_U8,
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    CODEC_ID_PCM_MULAW,
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    CODEC_ID_PCM_ALAW,
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    /* various adpcm codecs */
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    CODEC_ID_ADPCM_IMA_QT,
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    CODEC_ID_ADPCM_IMA_WAV,
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    CODEC_ID_ADPCM_IMA_DK3,
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    CODEC_ID_ADPCM_IMA_DK4,
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    CODEC_ID_ADPCM_MS,
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    CODEC_ID_ADPCM_4XM,
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        /* AMR */
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    CODEC_ID_AMR_NB,
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    /* RealAudio codecs*/
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    CODEC_ID_RA_144,
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    CODEC_ID_RA_288,
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    /* various DPCM codecs */
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    CODEC_ID_ROQ_DPCM,
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    CODEC_ID_INTERPLAY_DPCM,
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    CODEC_ID_XAN_DPCM,
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};
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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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};
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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).
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 */
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enum PixelFormat {
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    PIX_FMT_YUV420P,   ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
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    PIX_FMT_YUV422,    
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    PIX_FMT_RGB24,     ///< Packed pixel, 3 bytes per pixel, RGBRGB...
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    PIX_FMT_BGR24,     ///< Packed pixel, 3 bytes per pixel, BGRBGR...
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    PIX_FMT_YUV422P,   ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
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    PIX_FMT_YUV444P,   ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
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    PIX_FMT_RGBA32,    ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
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    PIX_FMT_YUV410P,   ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
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    PIX_FMT_YUV411P,   ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
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    PIX_FMT_RGB565,    ///< always stored in cpu endianness 
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    PIX_FMT_RGB555,    ///< always stored in cpu endianness, most significant bit to 1 
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    PIX_FMT_GRAY8,
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    PIX_FMT_MONOWHITE, ///< 0 is white 
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    PIX_FMT_MONOBLACK, ///< 0 is black 
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    PIX_FMT_PAL8,      ///< 8 bit with RGBA palette 
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    PIX_FMT_YUVJ420P,  ///< Planar YUV 4:2:0 full scale (jpeg)
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    PIX_FMT_YUVJ422P,  ///< Planar YUV 4:2:2 full scale (jpeg)
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    PIX_FMT_YUVJ444P,  ///< Planar YUV 4:4:4 full scale (jpeg)
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    PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
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    PIX_FMT_XVMC_MPEG2_IDCT,
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    PIX_FMT_NB,
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};
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/* currently unused, may be used if 24/32 bits samples ever supported */
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enum SampleFormat {
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    SAMPLE_FMT_S16 = 0,         ///< signed 16 bits 
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};
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/* in bytes */
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#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
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/**
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 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
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 * this is mainly needed because some optimized bitstream readers read 
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 * 32 or 64 bit at once and could read over the end<br>
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 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
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 * MPEG bitstreams could cause overread and segfault
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 */
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#define FF_INPUT_BUFFER_PADDING_SIZE 8
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/* motion estimation type, EPZS by default */
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enum Motion_Est_ID {
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    ME_ZERO = 1,
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    ME_FULL,
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    ME_LOG,
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    ME_PHODS,
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    ME_EPZS,
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    ME_X1
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};
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typedef struct RcOverride{
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    int start_frame;
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    int end_frame;
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    int qscale; // if this is 0 then quality_factor will be used instead
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    float quality_factor;
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} RcOverride;
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/* only for ME compatiblity with old apps */
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extern int motion_estimation_method;
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/* ME algos sorted by quality */
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static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG, 
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                                       ME_X1, ME_EPZS, ME_FULL };
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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 
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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_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 ///< Advanced intra coding 
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#define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector  
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/* For advanced prediction mode, we reuse the 4MV flag */
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/* Unsupported options :
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 *                 Syntax Arithmetic coding (SAC)
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 *                 Deblocking filter internal loop
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 *                 Slice structured
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 *                 Reference Picture Selection
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 *                 Independant Segment Decoding
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 *                 Alternative Inter *                 VLC
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 *                 Modified Quantization */
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/* /Fx */
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/* codec capabilities */
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#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback 
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/**
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 * Codec uses get_buffer() for allocating buffers.
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 * direct rendering method 1
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 */
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#define CODEC_CAP_DR1             0x0002
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/* if 'parse_only' field is true, then avcodec_parse_frame() can be
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   used */
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#define CODEC_CAP_PARSE_ONLY      0x0004
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#define CODEC_CAP_TRUNCATED       0x0008
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#define FF_COMMON_FRAME \
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    /**\
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     * pointer to the picture planes.\
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     * this might be different from the first allocated byte\
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     * - encoding: \
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     * - decoding: \
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     */\
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    uint8_t *data[4];\
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    int linesize[4];\
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    /**\
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     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
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     * this isnt used by lavc unless the default get/release_buffer() is used\
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     * - encoding: \
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     * - decoding: \
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     */\
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    uint8_t *base[4];\
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    /**\
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     * 1 -> keyframe, 0-> not\
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     * - encoding: set by lavc\
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     * - decoding: set by lavc\
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     */\
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    int key_frame;\
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\
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    /**\
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     * picture type of the frame, see ?_TYPE below.\
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     * - encoding: set by lavc for coded_picture (and set by user for input)\
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     * - decoding: set by lavc\
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     */\
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    int pict_type;\
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\
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    /**\
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     * presentation timestamp in micro seconds (time when frame should be shown to user)\
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     * if 0 then the frame_rate will be used as reference\
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     * - encoding: MUST be set by user\
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     * - decoding: set by lavc\
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     */\
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    int64_t pts;\
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\
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    /**\
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     * picture number in bitstream order.\
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     * - encoding: set by\
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     * - decoding: set by lavc\
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     */\
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    int coded_picture_number;\
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    /**\
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     * picture number in display order.\
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     * - encoding: set by\
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     * - decoding: set by lavc\
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     */\
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    int display_picture_number;\
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\
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    /**\
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     * quality (between 1 (good) and 31 (bad)) \
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     * - encoding: set by lavc for coded_picture (and set by user for input)\
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     * - decoding: set by lavc\
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     */\
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    float quality; \
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\
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    /**\
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     * buffer age (1->was last buffer and dint change, 2->..., ...).\
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     * set to something large if the buffer has not been used yet \
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     * - encoding: unused\
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     * - decoding: MUST be set by get_buffer()\
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     */\
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    int age;\
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\
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    /**\
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     * is this picture used as reference\
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     * - encoding: unused\
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     * - decoding: set by lavc (before get_buffer() call))\
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     */\
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    int reference;\
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\
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    /**\
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     * QP table\
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     * - encoding: unused\
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     * - decoding: set by lavc\
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     */\
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    int8_t *qscale_table;\
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    /**\
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     * QP store stride\
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     * - encoding: unused\
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     * - decoding: set by lavc\
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     */\
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    int qstride;\
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\
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    /**\
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     * mbskip_table[mb]>=1 if MB didnt change\
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     * stride= mb_width = (width+15)>>4\
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     * - encoding: unused\
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     * - decoding: set by lavc\
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     */\
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    uint8_t *mbskip_table;\
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\
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    /**\
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     * for some private data of the user\
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     * - encoding: unused\
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     * - decoding: set by user\
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     */\
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    void *opaque;\
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\
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    /**\
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     * error\
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     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
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     * - decoding: unused\
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     */\
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    uint64_t error[4];\
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\
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    /**\
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     * type of the buffer (to keep track of who has to dealloc data[*])\
364
     * - encoding: set by the one who allocs it\
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     * - decoding: set by the one who allocs it\
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     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
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     */\
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    int type;\
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    \
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    /**\
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     * when decoding, this signal how much the picture must be delayed.\
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     * extra_delay = repeat_pict / (2*fps)\
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     * - encoding: unused\
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     * - decoding: set by lavc\
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     */\
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    int repeat_pict;\
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    \
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    /**\
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     * \
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     */\
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    int qscale_type;\
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#define FF_QSCALE_TYPE_MPEG1        0
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#define FF_QSCALE_TYPE_MPEG2        1
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#define FF_BUFFER_TYPE_INTERNAL 1
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#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
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#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base)
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#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
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#define FF_I_TYPE 1 // Intra
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#define FF_P_TYPE 2 // Predicted
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#define FF_B_TYPE 3 // Bi-dir predicted
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#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
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#define FF_SI_TYPE 5
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#define FF_SP_TYPE 6
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/**
400
 * Audio Video Frame.
401
 */
402
typedef struct AVFrame {
403
    FF_COMMON_FRAME
404
} AVFrame;
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#define DEFAULT_FRAME_RATE_BASE 1001000
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/**
409
 * main external api structure.
410
 */
411
typedef struct AVCodecContext {
412
    /**
413
     * the average bitrate.
414
     * - encoding: set by user. unused for constant quantizer encoding
415
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
416
     */
417
    int bit_rate;
418

    
419
    /**
420
     * number of bits the bitstream is allowed to diverge from the reference.
421
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
422
     * - encoding: set by user. unused for constant quantizer encoding
423
     * - decoding: unused
424
     */
425
    int bit_rate_tolerance; 
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427
    /**
428
     * CODEC_FLAG_*.
429
     * - encoding: set by user.
430
     * - decoding: set by user.
431
     */
432
    int flags;
433

    
434
    /**
435
     * some codecs needs additionnal format info. It is stored here
436
     * - encoding: set by user. 
437
     * - decoding: set by lavc. (FIXME is this ok?)
438
     */
439
    int sub_id;
440

    
441
    /**
442
     * motion estimation algorithm used for video coding.
443
     * - encoding: MUST be set by user.
444
     * - decoding: unused
445
     */
446
    int me_method;
447

    
448
    /**
449
     * some codecs need / can use extra-data like huffman tables.
450
     * mjpeg: huffman tables
451
     * rv10: additional flags
452
     * mpeg4: global headers (they can be in the bitstream or here)
453
     * - encoding: set/allocated/freed by lavc.
454
     * - decoding: set/allocated/freed by user.
455
     */
456
    void *extradata;
457
    int extradata_size;
458
    
459
    /* video only */
460
    /**
461
     * frames per sec multiplied by frame_rate_base.
462
     * for variable fps this is the precission, so if the timestamps 
463
     * can be specified in msec precssion then this is 1000*frame_rate_base
464
     * - encoding: MUST be set by user
465
     * - decoding: set by lavc. 0 or the frame_rate if available
466
     */
467
    int frame_rate;
468
    
469
    /**
470
     * width / height.
471
     * - encoding: MUST be set by user. 
472
     * - decoding: set by user, some codecs might override / change it during playback
473
     */
474
    int width, height;
475
    
476
#define FF_ASPECT_SQUARE 1
477
#define FF_ASPECT_4_3_625 2
478
#define FF_ASPECT_4_3_525 3
479
#define FF_ASPECT_16_9_625 4
480
#define FF_ASPECT_16_9_525 5
481
#define FF_ASPECT_EXTENDED 15
482

    
483
    /**
484
     * the number of pictures in a group of pitures, or 0 for intra_only.
485
     * - encoding: set by user.
486
     * - decoding: unused
487
     */
488
    int gop_size;
489

    
490
    /**
491
     * pixel format, see PIX_FMT_xxx.
492
     * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
493
     *                    conversion is in order. This only works for
494
     *                    codecs with one supported pix_fmt, we should
495
     *                    do something for a generic case as well.
496
     * - decoding: set by lavc.
497
     */
498
    enum PixelFormat pix_fmt;
499
 
500
    /**
501
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
502
     * has to read frames at native frame rate.
503
     * - encoding: set by user.
504
     * - decoding: unused.
505
     */
506
    int rate_emu;
507
       
508
    /**
509
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
510
     * decoder to draw an horizontal band. It improve cache usage. Not
511
     * all codecs can do that. You must check the codec capabilities
512
     * before
513
     * - encoding: unused
514
     * - decoding: set by user.
515
     * @param height the height of the slice
516
     * @param y the y position of the slice
517
     * @param type 1->top field, 2->bottom field, 3->frame
518
     * @param offset offset into the AVFrame.data from which the slice should be read
519
     */
520
    void (*draw_horiz_band)(struct AVCodecContext *s,
521
                            AVFrame *src, int offset[4],
522
                            int y, int type, int height);
523

    
524
    /* audio only */
525
    int sample_rate; ///< samples per sec 
526
    int channels;
527
    int sample_fmt;  ///< sample format, currenly unused 
528

    
529
    /* the following data should not be initialized */
530
    int frame_size;     ///< in samples, initialized when calling 'init' 
531
    int frame_number;   ///< audio or video frame number 
532
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
533
    
534
    /**
535
     * number of frames the decoded output will be delayed relative to 
536
     * the encoded input.
537
     * - encoding: set by lavc.
538
     * - decoding: unused
539
     */
540
    int delay;
541
    
542
    /* - encoding parameters */
543
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
544
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
545
    
546
    /**
547
     * minimum quantizer.
548
     * - encoding: set by user.
549
     * - decoding: unused
550
     */
551
    int qmin;
552

    
553
    /**
554
     * maximum quantizer.
555
     * - encoding: set by user.
556
     * - decoding: unused
557
     */
558
    int qmax;
559

    
560
    /**
561
     * maximum quantizer difference etween frames.
562
     * - encoding: set by user.
563
     * - decoding: unused
564
     */
565
    int max_qdiff;
566

    
567
    /**
568
     * maximum number of b frames between non b frames.
569
     * note: the output will be delayed by max_b_frames+1 relative to the input
570
     * - encoding: set by user.
571
     * - decoding: unused
572
     */
573
    int max_b_frames;
574

    
575
    /**
576
     * qscale factor between ip and b frames.
577
     * - encoding: set by user.
578
     * - decoding: unused
579
     */
580
    float b_quant_factor;
581
    
582
    /** obsolete FIXME remove */
583
    int rc_strategy;
584
    int b_frame_strategy;
585

    
586
    /**
587
     * hurry up amount.
588
     * - encoding: unused
589
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
590
     */
591
    int hurry_up;
592
    
593
    struct AVCodec *codec;
594
    
595
    void *priv_data;
596

    
597
    /* The following data is for RTP friendly coding */
598
    /* By now only H.263/H.263+/MPEG4 coder honours this   */
599
    int rtp_mode;   /* 1 for activate RTP friendly-mode           */
600
                    /* highers numbers represent more error-prone */
601
                    /* enviroments, by now just "1" exist         */
602
    
603
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
604
                            /* do it's best to deliver a chunk with size    */
605
                            /* below rtp_payload_size, the chunk will start */
606
                            /* with a start code on some codecs like H.263  */
607
                            /* This doesn't take account of any particular  */
608
                            /* headers inside the transmited RTP payload    */
609

    
610
    
611
    /* The RTP callcack: This function is called  */
612
    /* every time the encoder as a packet to send */
613
    /* Depends on the encoder if the data starts  */
614
    /* with a Start Code (it should) H.263 does   */
615
    void (*rtp_callback)(void *data, int size, int packet_number); 
616

    
617
    /* statistics, used for 2-pass encoding */
618
    int mv_bits;
619
    int header_bits;
620
    int i_tex_bits;
621
    int p_tex_bits;
622
    int i_count;
623
    int p_count;
624
    int skip_count;
625
    int misc_bits;
626
    
627
    /**
628
     * number of bits used for the previously encoded frame.
629
     * - encoding: set by lavc
630
     * - decoding: unused
631
     */
632
    int frame_bits;
633

    
634
    /**
635
     * private data of the user, can be used to carry app specific stuff.
636
     * - encoding: set by user
637
     * - decoding: set by user
638
     */
639
    void *opaque;
640

    
641
    char codec_name[32];
642
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
643
    enum CodecID codec_id; /* see CODEC_ID_xxx */
644
    
645
    /**
646
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
647
     * this is used to workaround some encoder bugs
648
     * - encoding: set by user, if not then the default based on codec_id will be used
649
     * - decoding: set by user, will be converted to upper case by lavc during init
650
     */
651
    unsigned int codec_tag;
652
    
653
    /**
654
     * workaround bugs in encoders which sometimes cannot be detected automatically.
655
     * - encoding: unused
656
     * - decoding: set by user
657
     */
658
    int workaround_bugs;
659
#define FF_BUG_AUTODETECT       1  ///< autodetection
660
#define FF_BUG_OLD_MSMPEG4      2
661
#define FF_BUG_XVID_ILACE       4
662
#define FF_BUG_UMP4             8
663
#define FF_BUG_NO_PADDING       16
664
#define FF_BUG_AC_VLC           32
665
#define FF_BUG_QPEL_CHROMA      64
666
#define FF_BUG_STD_QPEL         128
667
#define FF_BUG_QPEL_CHROMA2     256
668
#define FF_BUG_DIRECT_BLOCKSIZE 512
669
#define FF_BUG_EDGE             1024
670
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
671
        
672
    /**
673
     * luma single coeff elimination threshold.
674
     * - encoding: set by user
675
     * - decoding: unused
676
     */
677
    int luma_elim_threshold;
678
    
679
    /**
680
     * chroma single coeff elimination threshold.
681
     * - encoding: set by user
682
     * - decoding: unused
683
     */
684
    int chroma_elim_threshold;
685
    
686
    /**
687
     * strictly follow the std (MPEG4, ...).
688
     * - encoding: set by user
689
     * - decoding: unused
690
     */
691
    int strict_std_compliance;
692
    
693
    /**
694
     * qscale offset between ip and b frames.
695
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
696
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
697
     * - encoding: set by user.
698
     * - decoding: unused
699
     */
700
    float b_quant_offset;
701
    
702
    /**
703
     * error resilience higher values will detect more errors but may missdetect
704
     * some more or less valid parts as errors.
705
     * - encoding: unused
706
     * - decoding: set by user
707
     */
708
    int error_resilience;
709
#define FF_ER_CAREFULL        1
710
#define FF_ER_COMPLIANT       2
711
#define FF_ER_AGGRESSIVE      3
712
#define FF_ER_VERY_AGGRESSIVE 4
713
    
714
    /**
715
     * called at the beginning of each frame to get a buffer for it.
716
     * if pic.reference is set then the frame will be read later by lavc
717
     * width and height should be rounded up to the next multiple of 16
718
     * - encoding: unused
719
     * - decoding: set by lavc, user can override
720
     */
721
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
722
    
723
    /**
724
     * called to release buffers which where allocated with get_buffer.
725
     * a released buffer can be reused in get_buffer()
726
     * pic.data[*] must be set to NULL
727
     * - encoding: unused
728
     * - decoding: set by lavc, user can override
729
     */
730
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
731

    
732
    /**
733
     * is 1 if the decoded stream contains b frames, 0 otherwise.
734
     * - encoding: unused
735
     * - decoding: set by lavc
736
     */
737
    int has_b_frames;
738
    
739
    int block_align; ///< used by some WAV based audio codecs
740
    
741
    int parse_only; /* - decoding only: if true, only parsing is done
742
                       (function avcodec_parse_frame()). The frame
743
                       data is returned. Only MPEG codecs support this now. */
744
    
745
    /**
746
     * 0-> h263 quant 1-> mpeg quant.
747
     * - encoding: set by user.
748
     * - decoding: unused
749
     */
750
    int mpeg_quant;
751
    
752
    /**
753
     * pass1 encoding statistics output buffer.
754
     * - encoding: set by lavc
755
     * - decoding: unused
756
     */
757
    char *stats_out;
758
    
759
    /**
760
     * pass2 encoding statistics input buffer.
761
     * concatenated stuff from stats_out of pass1 should be placed here
762
     * - encoding: allocated/set/freed by user
763
     * - decoding: unused
764
     */
765
    char *stats_in;
766
    
767
    /**
768
     * ratecontrol qmin qmax limiting method.
769
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
770
     * - encoding: set by user.
771
     * - decoding: unused
772
     */
773
    float rc_qsquish;
774

    
775
    float rc_qmod_amp;
776
    int rc_qmod_freq;
777
    
778
    /**
779
     * ratecontrol override, see RcOverride.
780
     * - encoding: allocated/set/freed by user.
781
     * - decoding: unused
782
     */
783
    RcOverride *rc_override;
784
    int rc_override_count;
785
    
786
    /**
787
     * rate control equation.
788
     * - encoding: set by user
789
     * - decoding: unused
790
     */
791
    char *rc_eq;
792
    
793
    /**
794
     * maximum bitrate.
795
     * - encoding: set by user.
796
     * - decoding: unused
797
     */
798
    int rc_max_rate;
799
    
800
    /**
801
     * minimum bitrate.
802
     * - encoding: set by user.
803
     * - decoding: unused
804
     */
805
    int rc_min_rate;
806
    
807
    /**
808
     * decoder bitstream buffer size.
809
     * - encoding: set by user.
810
     * - decoding: unused
811
     */
812
    int rc_buffer_size;
813
    float rc_buffer_aggressivity;
814

    
815
    /**
816
     * qscale factor between p and i frames.
817
     * - encoding: set by user.
818
     * - decoding: unused
819
     */
820
    float i_quant_factor;
821
    
822
    /**
823
     * qscale offset between p and i frames.
824
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
825
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
826
     * - encoding: set by user.
827
     * - decoding: unused
828
     */
829
    float i_quant_offset;
830
    
831
    /**
832
     * initial complexity for pass1 ratecontrol.
833
     * - encoding: set by user.
834
     * - decoding: unused
835
     */
836
    float rc_initial_cplx;
837

    
838
    /**
839
     * dct algorithm, see FF_DCT_* below.
840
     * - encoding: set by user
841
     * - decoding: unused
842
     */
843
    int dct_algo;
844
#define FF_DCT_AUTO    0
845
#define FF_DCT_FASTINT 1
846
#define FF_DCT_INT     2
847
#define FF_DCT_MMX     3
848
#define FF_DCT_MLIB    4
849
#define FF_DCT_ALTIVEC 5
850
    
851
    /**
852
     * luminance masking (0-> disabled).
853
     * - encoding: set by user
854
     * - decoding: unused
855
     */
856
    float lumi_masking;
857
    
858
    /**
859
     * temporary complexity masking (0-> disabled).
860
     * - encoding: set by user
861
     * - decoding: unused
862
     */
863
    float temporal_cplx_masking;
864
    
865
    /**
866
     * spatial complexity masking (0-> disabled).
867
     * - encoding: set by user
868
     * - decoding: unused
869
     */
870
    float spatial_cplx_masking;
871
    
872
    /**
873
     * p block masking (0-> disabled).
874
     * - encoding: set by user
875
     * - decoding: unused
876
     */
877
    float p_masking;
878

    
879
    /**
880
     * darkness masking (0-> disabled).
881
     * - encoding: set by user
882
     * - decoding: unused
883
     */
884
    float dark_masking;
885
    
886
    
887
    /* for binary compatibility */
888
    int unused;
889
    
890
    /**
891
     * idct algorithm, see FF_IDCT_* below.
892
     * - encoding: set by user
893
     * - decoding: set by user
894
     */
895
    int idct_algo;
896
#define FF_IDCT_AUTO         0
897
#define FF_IDCT_INT          1
898
#define FF_IDCT_SIMPLE       2
899
#define FF_IDCT_SIMPLEMMX    3
900
#define FF_IDCT_LIBMPEG2MMX  4
901
#define FF_IDCT_PS2          5
902
#define FF_IDCT_MLIB         6
903
#define FF_IDCT_ARM          7
904
#define FF_IDCT_ALTIVEC      8
905
#define FF_IDCT_SH4          9
906
#define FF_IDCT_SIMPLEARM    10
907

    
908
    /**
909
     * slice count.
910
     * - encoding: set by lavc
911
     * - decoding: set by user (or 0)
912
     */
913
    int slice_count;
914
    /**
915
     * slice offsets in the frame in bytes.
916
     * - encoding: set/allocated by lavc
917
     * - decoding: set/allocated by user (or NULL)
918
     */
919
    int *slice_offset;
920

    
921
    /**
922
     * error concealment flags.
923
     * - encoding: unused
924
     * - decoding: set by user
925
     */
926
    int error_concealment;
927
#define FF_EC_GUESS_MVS   1
928
#define FF_EC_DEBLOCK     2
929

    
930
    /**
931
     * dsp_mask could be add used to disable unwanted CPU features
932
     * CPU features (i.e. MMX, SSE. ...)
933
     *
934
     * with FORCE flag you may instead enable given CPU features
935
     * (Dangerous: usable in case of misdetection, improper usage however will
936
     * result into program crash)
937
     */
938
    unsigned dsp_mask;
939
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
940
    /* lower 16 bits - CPU features */
941
#ifdef HAVE_MMX
942
#define FF_MM_MMX        0x0001 /* standard MMX */
943
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
944
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
945
#define FF_MM_SSE        0x0008 /* SSE functions */
946
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
947
#endif /* HAVE_MMX */
948

    
949
    /**
950
     * bits per sample/pixel from the demuxer (needed for huffyuv).
951
     * - encoding: set by lavc
952
     * - decoding: set by user
953
     */
954
     int bits_per_sample;
955
    
956
    /**
957
     * prediction method (needed for huffyuv).
958
     * - encoding: set by user
959
     * - decoding: unused
960
     */
961
     int prediction_method;
962
#define FF_PRED_LEFT   0
963
#define FF_PRED_PLANE  1
964
#define FF_PRED_MEDIAN 2
965
    
966
    /**
967
     * aspect ratio (0 if unknown).
968
     * - encoding: set by user.
969
     * - decoding: set by lavc.
970
     */
971
    float aspect_ratio;
972

    
973
    /**
974
     * the picture in the bitstream.
975
     * - encoding: set by lavc
976
     * - decoding: set by lavc
977
     */
978
    AVFrame *coded_frame;
979

    
980
    /**
981
     * debug.
982
     * - encoding: set by user.
983
     * - decoding: set by user.
984
     */
985
    int debug;
986
#define FF_DEBUG_PICT_INFO 1
987
#define FF_DEBUG_RC        2
988
#define FF_DEBUG_BITSTREAM 4
989
#define FF_DEBUG_MB_TYPE   8
990
#define FF_DEBUG_QP        16
991
#define FF_DEBUG_MV        32
992
#define FF_DEBUG_VIS_MV    0x00000040
993
#define FF_DEBUG_SKIP      0x00000080
994
#define FF_DEBUG_STARTCODE 0x00000100
995
#define FF_DEBUG_PTS       0x00000200
996
#define FF_DEBUG_ER        0x00000400
997
#define FF_DEBUG_MMCO      0x00000800
998
#define FF_DEBUG_BUGS      0x00001000
999
    
1000
    /**
1001
     * error.
1002
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1003
     * - decoding: unused
1004
     */
1005
    uint64_t error[4];
1006
    
1007
    /**
1008
     * minimum MB quantizer.
1009
     * - encoding: set by user.
1010
     * - decoding: unused
1011
     */
1012
    int mb_qmin;
1013

    
1014
    /**
1015
     * maximum MB quantizer.
1016
     * - encoding: set by user.
1017
     * - decoding: unused
1018
     */
1019
    int mb_qmax;
1020
    
1021
    /**
1022
     * motion estimation compare function.
1023
     * - encoding: set by user.
1024
     * - decoding: unused
1025
     */
1026
    int me_cmp;
1027
    /**
1028
     * subpixel motion estimation compare function.
1029
     * - encoding: set by user.
1030
     * - decoding: unused
1031
     */
1032
    int me_sub_cmp;
1033
    /**
1034
     * macroblock compare function (not supported yet).
1035
     * - encoding: set by user.
1036
     * - decoding: unused
1037
     */
1038
    int mb_cmp;
1039
#define FF_CMP_SAD  0
1040
#define FF_CMP_SSE  1
1041
#define FF_CMP_SATD 2
1042
#define FF_CMP_DCT  3
1043
#define FF_CMP_PSNR 4
1044
#define FF_CMP_BIT  5
1045
#define FF_CMP_RD   6
1046
#define FF_CMP_ZERO 7
1047
#define FF_CMP_CHROMA 256
1048
    
1049
    /**
1050
     * ME diamond size & shape.
1051
     * - encoding: set by user.
1052
     * - decoding: unused
1053
     */
1054
    int dia_size;
1055

    
1056
    /**
1057
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1058
     * - encoding: set by user.
1059
     * - decoding: unused
1060
     */
1061
    int last_predictor_count;
1062

    
1063
    /**
1064
     * pre pass for motion estimation.
1065
     * - encoding: set by user.
1066
     * - decoding: unused
1067
     */
1068
    int pre_me;
1069

    
1070
    /**
1071
     * motion estimation pre pass compare function.
1072
     * - encoding: set by user.
1073
     * - decoding: unused
1074
     */
1075
    int me_pre_cmp;
1076

    
1077
    /**
1078
     * ME pre pass diamond size & shape.
1079
     * - encoding: set by user.
1080
     * - decoding: unused
1081
     */
1082
    int pre_dia_size;
1083

    
1084
    /**
1085
     * subpel ME quality.
1086
     * - encoding: set by user.
1087
     * - decoding: unused
1088
     */
1089
    int me_subpel_quality;
1090

    
1091
    /**
1092
     * callback to negotiate the pixelFormat.
1093
     * @param fmt is the list of formats which are supported by the codec,
1094
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1095
     * the first is allways the native one
1096
     * @return the choosen format
1097
     * - encoding: unused
1098
     * - decoding: set by user, if not set then the native format will always be choosen
1099
     */
1100
    enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1101

    
1102
    /**
1103
     * DTG active format information (additionnal aspect ratio
1104
     * information only used in DVB MPEG2 transport streams). 0 if
1105
     * not set.
1106
     * 
1107
     * - encoding: unused.
1108
     * - decoding: set by decoder 
1109
     */
1110
    int dtg_active_format;
1111
#define FF_DTG_AFD_SAME         8
1112
#define FF_DTG_AFD_4_3          9
1113
#define FF_DTG_AFD_16_9         10
1114
#define FF_DTG_AFD_14_9         11
1115
#define FF_DTG_AFD_4_3_SP_14_9  13
1116
#define FF_DTG_AFD_16_9_SP_14_9 14
1117
#define FF_DTG_AFD_SP_4_3       15
1118

    
1119
    /**
1120
     * Maximum motion estimation search range in subpel units.
1121
     * if 0 then no limit
1122
     * 
1123
     * - encoding: set by user.
1124
     * - decoding: unused.
1125
     */
1126
    int me_range;
1127

    
1128
    /**
1129
     * frame_rate_base.
1130
     * for variable fps this is 1
1131
     * - encoding: set by user.
1132
     * - decoding: set by lavc.
1133
     * @todo move this after frame_rate
1134
     */
1135

    
1136
    int frame_rate_base;
1137
    /**
1138
     * intra quantizer bias.
1139
     * - encoding: set by user.
1140
     * - decoding: unused
1141
     */
1142
    int intra_quant_bias;
1143
#define FF_DEFAULT_QUANT_BIAS 999999
1144
    
1145
    /**
1146
     * inter quantizer bias.
1147
     * - encoding: set by user.
1148
     * - decoding: unused
1149
     */
1150
    int inter_quant_bias;
1151

    
1152
    /**
1153
     * color table ID.
1154
     * - encoding: unused.
1155
     * - decoding: which clrtable should be used for 8bit RGB images
1156
     *             table have to be stored somewhere FIXME
1157
     */
1158
    int color_table_id;
1159
    
1160
    /**
1161
     * internal_buffer count. 
1162
     * Dont touch, used by lavc default_get_buffer()
1163
     */
1164
    int internal_buffer_count;
1165
    
1166
    /**
1167
     * internal_buffers. 
1168
     * Dont touch, used by lavc default_get_buffer()
1169
     */
1170
    void *internal_buffer;
1171
    
1172
#define FF_QUALITY_SCALE 256
1173
    /**
1174
     * global quality for codecs which cannot change it per frame.
1175
     * this should be proportional to MPEG1/2/4 qscale.
1176
     * - encoding: set by user.
1177
     * - decoding: unused
1178
     */
1179
    int global_quality;
1180
    
1181
#define FF_CODER_TYPE_VLC   0
1182
#define FF_CODER_TYPE_AC    1
1183
    /**
1184
     * coder type
1185
     * - encoding: set by user.
1186
     * - decoding: unused
1187
     */
1188
    int coder_type;
1189

    
1190
    /**
1191
     * context model
1192
     * - encoding: set by user.
1193
     * - decoding: unused
1194
     */
1195
    int context_model;
1196
    
1197
    /**
1198
     * slice flags
1199
     * - encoding: unused
1200
     * - decoding: set by user.
1201
     */
1202
    int slice_flags;
1203
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1204
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1205
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1206

    
1207
    /**
1208
     * XVideo Motion Acceleration
1209
     * - encoding: forbidden
1210
     * - decoding: set by decoder
1211
     */
1212
    int xvmc_acceleration;
1213
    
1214
    /**
1215
     * macroblock decision mode
1216
     * - encoding: set by user.
1217
     * - decoding: unused
1218
     */
1219
    int mb_decision;
1220
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1221
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1222
#define FF_MB_DECISION_RD     2        ///< rate distoration
1223

    
1224
    /**
1225
     * custom intra quantization matrix
1226
     * - encoding: set by user, can be NULL
1227
     * - decoding: set by lavc
1228
     */
1229
    uint16_t *intra_matrix;
1230

    
1231
    /**
1232
     * custom inter quantization matrix
1233
     * - encoding: set by user, can be NULL
1234
     * - decoding: set by lavc
1235
     */
1236
    uint16_t *inter_matrix;
1237
    
1238
    /**
1239
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1240
     * this is used to workaround some encoder bugs
1241
     * - encoding: unused
1242
     * - decoding: set by user, will be converted to upper case by lavc during init
1243
     */
1244
    unsigned int stream_codec_tag;
1245
} AVCodecContext;
1246

    
1247

    
1248
/**
1249
 * AVOption.
1250
 */
1251
typedef struct AVOption {
1252
    /** options' name */
1253
    const char *name; /* if name is NULL, it indicates a link to next */
1254
    /** short English text help or const struct AVOption* subpointer */
1255
    const char *help; //        const struct AVOption* sub;
1256
    /** offset to context structure where the parsed value should be stored */
1257
    int offset;
1258
    /** options' type */
1259
    int type;
1260
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1261
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1262
#define FF_OPT_TYPE_INT 3       ///< integer
1263
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1264
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1265
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1266
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1267
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1268
    /** min value  (min == max   ->  no limits) */
1269
    double min;
1270
    /** maximum value for double/int */
1271
    double max;
1272
    /** default boo [0,1]l/double/int value */
1273
    double defval;
1274
    /**
1275
     * default string value (with optional semicolon delimited extra option-list
1276
     * i.e.   option1;option2;option3
1277
     * defval might select other then first argument as default
1278
     */
1279
    const char *defstr;
1280
#define FF_OPT_MAX_DEPTH 10
1281
} AVOption;
1282

    
1283
/**
1284
 * Parse option(s) and sets fields in passed structure
1285
 * @param strct        structure where the parsed results will be written
1286
 * @param list  list with AVOptions
1287
 * @param opts        string with options for parsing
1288
 */
1289
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1290

    
1291

    
1292
/**
1293
 * AVCodec.
1294
 */
1295
typedef struct AVCodec {
1296
    const char *name;
1297
    enum CodecType type;
1298
    int id;
1299
    int priv_data_size;
1300
    int (*init)(AVCodecContext *);
1301
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1302
    int (*close)(AVCodecContext *);
1303
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1304
                  uint8_t *buf, int buf_size);
1305
    int capabilities;
1306
    const AVOption *options;
1307
    struct AVCodec *next;
1308
    void (*flush)(AVCodecContext *);
1309
} AVCodec;
1310

    
1311
/**
1312
 * four components are given, that's all.
1313
 * the last component is alpha
1314
 */
1315
typedef struct AVPicture {
1316
    uint8_t *data[4];
1317
    int linesize[4];       ///< number of bytes per line
1318
} AVPicture;
1319

    
1320
/**
1321
 * AVPaletteControl
1322
 * This structure defines a method for communicating palette changes
1323
 * between and demuxer and a decoder.
1324
 */
1325
typedef struct AVPaletteControl {
1326

    
1327
    /* demuxer sets this to 1 to indicate the palette has changed;
1328
     * decoder resets to 0 */
1329
    int palette_changed;
1330

    
1331
    /* 256 3-byte RGB palette entries; the components should be
1332
     * formatted in the buffer as "RGBRGB..." and should be scaled to
1333
     * 8 bits if they originally represented 6-bit VGA palette
1334
     * components */
1335
    unsigned char palette[256 * 3];
1336

    
1337
} AVPaletteControl;
1338

    
1339
extern AVCodec ac3_encoder;
1340
extern AVCodec mp2_encoder;
1341
extern AVCodec mp3lame_encoder;
1342
extern AVCodec oggvorbis_encoder;
1343
extern AVCodec mpeg1video_encoder;
1344
extern AVCodec mpeg2video_encoder;
1345
extern AVCodec h263_encoder;
1346
extern AVCodec h263p_encoder;
1347
extern AVCodec flv_encoder;
1348
extern AVCodec rv10_encoder;
1349
extern AVCodec mjpeg_encoder;
1350
extern AVCodec ljpeg_encoder;
1351
extern AVCodec mpeg4_encoder;
1352
extern AVCodec msmpeg4v1_encoder;
1353
extern AVCodec msmpeg4v2_encoder;
1354
extern AVCodec msmpeg4v3_encoder;
1355
extern AVCodec wmv1_encoder;
1356
extern AVCodec wmv2_encoder;
1357
extern AVCodec huffyuv_encoder;
1358
extern AVCodec h264_encoder;
1359
extern AVCodec asv1_encoder;
1360
extern AVCodec asv2_encoder;
1361
extern AVCodec vcr1_encoder;
1362
extern AVCodec ffv1_encoder;
1363
extern AVCodec mdec_encoder;
1364

    
1365
extern AVCodec h263_decoder;
1366
extern AVCodec mpeg4_decoder;
1367
extern AVCodec msmpeg4v1_decoder;
1368
extern AVCodec msmpeg4v2_decoder;
1369
extern AVCodec msmpeg4v3_decoder;
1370
extern AVCodec wmv1_decoder;
1371
extern AVCodec wmv2_decoder;
1372
extern AVCodec mpeg1video_decoder;
1373
extern AVCodec mpeg2video_decoder;
1374
extern AVCodec mpeg_xvmc_decoder;
1375
extern AVCodec h263i_decoder;
1376
extern AVCodec flv_decoder;
1377
extern AVCodec rv10_decoder;
1378
extern AVCodec svq1_decoder;
1379
extern AVCodec svq3_decoder;
1380
extern AVCodec dvvideo_decoder;
1381
extern AVCodec dvaudio_decoder;
1382
extern AVCodec wmav1_decoder;
1383
extern AVCodec wmav2_decoder;
1384
extern AVCodec mjpeg_decoder;
1385
extern AVCodec mjpegb_decoder;
1386
extern AVCodec mp2_decoder;
1387
extern AVCodec mp3_decoder;
1388
extern AVCodec mace3_decoder;
1389
extern AVCodec mace6_decoder;
1390
extern AVCodec huffyuv_decoder;
1391
extern AVCodec oggvorbis_decoder;
1392
extern AVCodec cyuv_decoder;
1393
extern AVCodec h264_decoder;
1394
extern AVCodec indeo3_decoder;
1395
extern AVCodec vp3_decoder;
1396
extern AVCodec amr_nb_decoder;
1397
extern AVCodec amr_nb_encoder;
1398
extern AVCodec aac_decoder;
1399
extern AVCodec mpeg4aac_decoder;
1400
extern AVCodec asv1_decoder;
1401
extern AVCodec asv2_decoder;
1402
extern AVCodec vcr1_decoder;
1403
extern AVCodec cljr_decoder;
1404
extern AVCodec ffv1_decoder;
1405
extern AVCodec fourxm_decoder;
1406
extern AVCodec mdec_decoder;
1407
extern AVCodec roq_decoder;
1408
extern AVCodec interplay_video_decoder;
1409
extern AVCodec xan_wc3_decoder;
1410
extern AVCodec ra_144_decoder;
1411
extern AVCodec ra_288_decoder;
1412
extern AVCodec roq_dpcm_decoder;
1413
extern AVCodec interplay_dpcm_decoder;
1414
extern AVCodec xan_dpcm_decoder;
1415

    
1416
/* pcm codecs */
1417
#define PCM_CODEC(id, name) \
1418
extern AVCodec name ## _decoder; \
1419
extern AVCodec name ## _encoder
1420

    
1421
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1422
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1423
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1424
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1425
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1426
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1427
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1428
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1429

    
1430
/* adpcm codecs */
1431

    
1432
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1433
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1434
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1435
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1436
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1437
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1438

    
1439
#undef PCM_CODEC
1440

    
1441
/* dummy raw video codec */
1442
extern AVCodec rawvideo_encoder;
1443
extern AVCodec rawvideo_decoder;
1444

    
1445
/* the following codecs use external GPL libs */
1446
extern AVCodec ac3_decoder;
1447

    
1448
/* resample.c */
1449

    
1450
struct ReSampleContext;
1451

    
1452
typedef struct ReSampleContext ReSampleContext;
1453

    
1454
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1455
                                     int output_rate, int input_rate);
1456
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1457
void audio_resample_close(ReSampleContext *s);
1458

    
1459
/* YUV420 format is assumed ! */
1460

    
1461
struct ImgReSampleContext;
1462

    
1463
typedef struct ImgReSampleContext ImgReSampleContext;
1464

    
1465
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1466
                                      int input_width, int input_height);
1467

    
1468
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1469
                                      int iwidth, int iheight,
1470
                                      int topBand, int bottomBand,
1471
                                      int leftBand, int rightBand);
1472

    
1473
void img_resample(ImgReSampleContext *s, 
1474
                  AVPicture *output, AVPicture *input);
1475

    
1476
void img_resample_close(ImgReSampleContext *s);
1477

    
1478
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1479
                   int pix_fmt, int width, int height);
1480
int avpicture_layout(AVPicture* src, int pix_fmt, int width, int height,
1481
                     unsigned char *dest, int dest_size);
1482
int avpicture_get_size(int pix_fmt, int width, int height);
1483
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1484
const char *avcodec_get_pix_fmt_name(int pix_fmt);
1485
enum PixelFormat avcodec_get_pix_fmt(const char* name);
1486

    
1487
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
1488
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
1489
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
1490
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
1491
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
1492
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1493

    
1494
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1495
                             int has_alpha);
1496
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1497
                              int has_alpha, int *loss_ptr);
1498

    
1499
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
1500
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
1501
int img_get_alpha_info(AVPicture *src, int pix_fmt, int width, int height);
1502

    
1503
/* convert among pixel formats */
1504
int img_convert(AVPicture *dst, int dst_pix_fmt,
1505
                AVPicture *src, int pix_fmt, 
1506
                int width, int height);
1507

    
1508
/* deinterlace a picture */
1509
int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
1510
                          int pix_fmt, int width, int height);
1511

    
1512
/* external high level API */
1513

    
1514
extern AVCodec *first_avcodec;
1515

    
1516
/* returns LIBAVCODEC_VERSION_INT constant */
1517
unsigned avcodec_version(void);
1518
/* returns LIBAVCODEC_BUILD constant */
1519
unsigned avcodec_build(void);
1520
void avcodec_init(void);
1521

    
1522
void register_avcodec(AVCodec *format);
1523
AVCodec *avcodec_find_encoder(enum CodecID id);
1524
AVCodec *avcodec_find_encoder_by_name(const char *name);
1525
AVCodec *avcodec_find_decoder(enum CodecID id);
1526
AVCodec *avcodec_find_decoder_by_name(const char *name);
1527
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1528

    
1529
void avcodec_get_context_defaults(AVCodecContext *s);
1530
AVCodecContext *avcodec_alloc_context(void);
1531
AVFrame *avcodec_alloc_frame(void);
1532

    
1533
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1534
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1535
void avcodec_default_free_buffers(AVCodecContext *s);
1536

    
1537
/**
1538
 * opens / inits the AVCodecContext.
1539
 * not thread save!
1540
 */
1541
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1542

    
1543
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
1544
                         int *frame_size_ptr,
1545
                         uint8_t *buf, int buf_size);
1546
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
1547
                         int *got_picture_ptr,
1548
                         uint8_t *buf, int buf_size);
1549
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
1550
                        int *data_size_ptr,
1551
                        uint8_t *buf, int buf_size);
1552
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1553
                         const short *samples);
1554
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1555
                         const AVFrame *pict);
1556

    
1557
int avcodec_close(AVCodecContext *avctx);
1558

    
1559
void avcodec_register_all(void);
1560

    
1561
void avcodec_flush_buffers(AVCodecContext *avctx);
1562

    
1563
/* misc usefull functions */
1564

    
1565
/**
1566
 * returns a single letter to describe the picture type
1567
 */
1568
char av_get_pict_type_char(int pict_type);
1569

    
1570
/**
1571
 * reduce a fraction.
1572
 * this is usefull for framerate calculations
1573
 * @param max the maximum allowed for dst_nom & dst_den
1574
 * @return 1 if exact, 0 otherwise
1575
 */
1576
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1577

    
1578
/**
1579
 * rescale a 64bit integer.
1580
 * a simple a*b/c isnt possible as it can overflow
1581
 */
1582
int64_t av_rescale(int64_t a, int b, int c);
1583

    
1584

    
1585
/**
1586
 * Interface for 0.5.0 version
1587
 *
1588
 * do not even think about it's usage for this moment
1589
 */
1590

    
1591
typedef struct {
1592
    /// compressed size used from given memory buffer
1593
    int size;
1594
    /// I/P/B frame type
1595
    int frame_type;
1596
} avc_enc_result_t;
1597

    
1598
/**
1599
 * Commands
1600
 * order can't be changed - once it was defined
1601
 */
1602
typedef enum {
1603
    // general commands
1604
    AVC_OPEN_BY_NAME = 0xACA000,
1605
    AVC_OPEN_BY_CODEC_ID,
1606
    AVC_OPEN_BY_FOURCC,
1607
    AVC_CLOSE,
1608

    
1609
    AVC_FLUSH,
1610
    // pin - struct { uint8_t* src, uint_t src_size }
1611
    // pout - struct { AVPicture* img, consumed_bytes,
1612
    AVC_DECODE,
1613
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1614
    // pout - uint_t used_from_dest_size
1615
    AVC_ENCODE, 
1616

    
1617
    // query/get video commands
1618
    AVC_GET_VERSION = 0xACB000,
1619
    AVC_GET_WIDTH,
1620
    AVC_GET_HEIGHT,
1621
    AVC_GET_DELAY,
1622
    AVC_GET_QUANT_TABLE,
1623
    // ...
1624

    
1625
    // query/get audio commands
1626
    AVC_GET_FRAME_SIZE = 0xABC000,
1627

    
1628
    // maybe define some simple structure which
1629
    // might be passed to the user - but they can't
1630
    // contain any codec specific parts and these
1631
    // calls are usualy necessary only few times
1632

    
1633
    // set video commands
1634
    AVC_SET_WIDTH = 0xACD000,
1635
    AVC_SET_HEIGHT,
1636

    
1637
    // set video encoding commands
1638
    AVC_SET_FRAME_RATE = 0xACD800,
1639
    AVC_SET_QUALITY,
1640
    AVC_SET_HURRY_UP,
1641

    
1642
    // set audio commands
1643
    AVC_SET_SAMPLE_RATE = 0xACE000,
1644
    AVC_SET_CHANNELS,
1645

    
1646
} avc_cmd_t;
1647

    
1648
/**
1649
 * \param handle  allocated private structure by libavcodec
1650
 *                for initialization pass NULL - will be returned pout
1651
 *                user is supposed to know nothing about its structure
1652
 * \param cmd     type of operation to be performed
1653
 * \param pint    input parameter
1654
 * \param pout    output parameter
1655
 *
1656
 * \returns  command status - eventually for query command it might return
1657
 * integer resulting value
1658
 */
1659
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1660

    
1661
/* memory */
1662
void *av_malloc(unsigned int size);
1663
void *av_mallocz(unsigned int size);
1664
void *av_realloc(void *ptr, unsigned int size);
1665
void av_free(void *ptr);
1666
char *av_strdup(const char *s);
1667
void __av_freep(void **ptr);
1668
#define av_freep(p) __av_freep((void **)(p))
1669
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
1670
/* for static data only */
1671
/* call av_free_static to release all staticaly allocated tables */
1672
void av_free_static(void);
1673
void *__av_mallocz_static(void** location, unsigned int size);
1674
#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1675

    
1676
#ifdef __cplusplus
1677
}
1678
#endif
1679

    
1680
#endif /* AVCODEC_H */