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#ifndef AVCODEC_H
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#define AVCODEC_H
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#include "common.h"
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#define LIBAVCODEC_VERSION_INT 0x000406
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#define LIBAVCODEC_VERSION     "0.4.6"
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#define LIBAVCODEC_BUILD       4639
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#define LIBAVCODEC_BUILD_STR   "4639"
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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_H263,
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    CODEC_ID_RV10,
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    CODEC_ID_MP2,
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    CODEC_ID_MP3LAME,
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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_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_SVQ1,
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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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    /* 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_MS,
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};
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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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enum PixelFormat {
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    PIX_FMT_ANY = -1,
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    PIX_FMT_YUV420P,
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    PIX_FMT_YUV422,
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    PIX_FMT_RGB24,
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    PIX_FMT_BGR24,
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    PIX_FMT_YUV422P,
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    PIX_FMT_YUV444P,
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    PIX_FMT_RGBA32,
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    PIX_FMT_BGRA32,
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    PIX_FMT_YUV410P,
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    PIX_FMT_YUV411P
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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 zero bytes at the end of the input bitstream for decoding.
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 * to avoid overreading (and possibly segfaulting)
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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 4
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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 
119
*/
120

    
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#define CODEC_FLAG_HQ     0x0001  /* brute force MB-type decission mode (slow) */
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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_DR1    0x8000  /* direct renderig type 1 (store internal frames in external buffers) */
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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 / will fail on b frames */
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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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#define CODEC_CAP_DR1             0x0002 /* direct rendering method 1 */
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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 FRAME_RATE_BASE 10000
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typedef struct AVCodecContext {
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    /**
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     * the average bitrate
156
     * encoding: set by user. unused for constant quantizer encoding
157
     * decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
158
     */
159
    int bit_rate;
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    /**
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     * number of bits the bitstream is allowed to diverge from the reference
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     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
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     * encoding: set by user. unused for constant quantizer encoding
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     * decoding: unused
166
     */
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    int bit_rate_tolerance; 
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    /**
170
     * CODEC_FLAG_*
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     * encoding: set by user.
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     * decoding: set by user.
173
     */
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    int flags;
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    /**
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     * some codecs needs additionnal format info. It is stored here
178
     * encoding: set by user. 
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     * decoding: set by lavc. (FIXME is this ok?)
180
     */
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    int sub_id;
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    /**
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     * motion estimation algorithm used for video coding
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     * encoding: set by user.
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     * decoding: unused
187
     */
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    int me_method;
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    /**
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     * some codecs need / can use extra-data like huffman tables
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     * mjpeg: huffman tables
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     * rv10: additional flags
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     * mpeg4: global headers (they can be in the bitstream or here)
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     * encoding: set/allocated/freed by lavc.
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     * decoding: set/allocated/freed by user.
197
     */
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    void *extradata;
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    int extradata_size;
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    /* video only */
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    /**
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     * frames per sec multiplied by FRAME_RATE_BASE
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     * for variable fps this is the precission, so if the timestamps 
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     * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
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     * encoding: set by user
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     * decoding: set by lavc. 0 or the frame_rate if available
208
     */
209
    int frame_rate;
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    /**
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     * encoding: set by user.
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     * decoding: set by user, some codecs might override / change it during playback
214
     */
215
    int width, height;
216
    
217
    /**
218
     * encoding: set by user. 0 if not known
219
     * decoding: set by lavc. 0 if not known
220
     */
221
    int aspect_ratio_info;
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#define FF_ASPECT_SQUARE 1
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#define FF_ASPECT_4_3_625 2
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#define FF_ASPECT_4_3_525 3
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#define FF_ASPECT_16_9_625 4
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#define FF_ASPECT_16_9_525 5
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#define FF_ASPECT_EXTENDED 15
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    /**
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     * the number of pictures in a group of pitures, or 0 for intra_only
231
     * encoding: set by user.
232
     * decoding: unused
233
     */
234
    int gop_size;
235

    
236
    /**
237
     * pixel format, see PIX_FMT_xxx
238
     * encoding: unused
239
     * decoding: set by lavc.
240
     */
241
    enum PixelFormat pix_fmt;
242
    
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    int repeat_pict; /* when decoding, this signal how much the picture */
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                     /* must be delayed.                                */
245
                     /* extra_delay = (repeat_pict / 2) * (1/fps)       */
246
    
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    /**
248
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
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     * decoder to draw an horizontal band. It improve cache usage. Not
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     * all codecs can do that. You must check the codec capabilities
251
     * before
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     * encoding: unused
253
     * decoding: set by user.
254
     */
255
    void (*draw_horiz_band)(struct AVCodecContext *s,
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                            UINT8 **src_ptr, int linesize,
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                            int y, int width, int height);
258

    
259
    /* audio only */
260
    int sample_rate; /* samples per sec */
261
    int channels;
262
    int sample_fmt;  /* sample format, currenly unused */
263

    
264
    /* the following data should not be initialized */
265
    int frame_size;     /* in samples, initialized when calling 'init' */
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    int frame_number;   /* audio or video frame number */
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    int real_pict_num;  /* returns the real picture number of
268
                           previous encoded frame */
269
                           
270
    /**
271
     * 1 -> keyframe, 0-> not
272
     * encoding: set by lavc (for the outputed bitstream, not the input frame)
273
     * decoding: set by lavc (for the decoded  bitstream, not the displayed frame)
274
     */
275
    int key_frame;
276

    
277
    /**
278
     * picture type of the previous en/decoded frame, see ?_TYPE below
279
     * encoding: set by lavc (for the outputed bitstream, not the input frame)
280
     * decoding: set by lavc (for the decoded  bitstream, not the displayed frame)
281
     */
282
    int pict_type;
283
/* FIXME: these should have FF_ */
284
#define I_TYPE 1 // Intra
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#define P_TYPE 2 // Predicted
286
#define B_TYPE 3 // Bi-dir predicted
287
#define S_TYPE 4 // S(GMC)-VOP MPEG4
288

    
289
    /**
290
     * number of frames the decoded output will be delayed relative to 
291
     * the encoded input
292
     * encoding: set by lavc.
293
     * decoding: unused
294
     */
295
    int delay;
296

    
297
    /**
298
     * mbskip_table[mb]=1 if MB didnt change, is only valid for I/P frames 
299
     * stride= mb_width = (width+15)>>4 (FIXME export stride?)
300
     * encoding: unused
301
     * decoding: set by lavc
302
     */
303
    uint8_t *mbskip_table;
304
    
305
    /* encoding parameters */
306
    /**
307
     * quality (between 1 (good) and 31 (bad)) 
308
     * encoding: set by user if CODEC_FLAG_QSCALE is set otherwise set by lavc
309
     * decoding: set by lavc
310
     */
311
    int quality;      /* quality of the previous encoded frame 
312
                         
313
                         this is allso used to set the quality in vbr mode
314
                         and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
315
    float qcompress;  /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
316
    float qblur;      /* amount of qscale smoothing over time (0.0-1.0) */
317
    
318
    /**
319
     * minimum quantizer
320
     * encoding: set by user.
321
     * decoding: unused
322
     */
323
    int qmin;
324

    
325
    /**
326
     * maximum quantizer
327
     * encoding: set by user.
328
     * decoding: unused
329
     */
330
    int qmax;
331

    
332
    /**
333
     * maximum quantizer difference etween frames
334
     * encoding: set by user.
335
     * decoding: unused
336
     */
337
    int max_qdiff;
338

    
339
    /**
340
     * maximum number of b frames between non b frames
341
     * note: the output will be delayed by max_b_frames+1 relative to the input
342
     * encoding: set by user.
343
     * decoding: unused
344
     */
345
    int max_b_frames;
346

    
347
    /**
348
     * qscale factor between ip and b frames
349
     * encoding: set by user.
350
     * decoding: unused
351
     */
352
    float b_quant_factor;
353
    
354
    /** obsolete FIXME remove */
355
    int rc_strategy;
356
    int b_frame_strategy;
357

    
358
    /**
359
     * encoding: unused
360
     * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
361
     */
362
    int hurry_up;
363
    
364
    struct AVCodec *codec;
365
    
366
    void *priv_data;
367

    
368
    /* The following data is for RTP friendly coding */
369
    /* By now only H.263/H.263+/MPEG4 coder honours this   */
370
    int rtp_mode;   /* 1 for activate RTP friendly-mode           */
371
                    /* highers numbers represent more error-prone */
372
                    /* enviroments, by now just "1" exist         */
373
    
374
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
375
                            /* do it's best to deliver a chunk with size    */
376
                            /* below rtp_payload_size, the chunk will start */
377
                            /* with a start code on some codecs like H.263  */
378
                            /* This doesn't take account of any particular  */
379
                            /* headers inside the transmited RTP payload    */
380

    
381
    
382
    /* The RTP callcack: This function is called  */
383
    /* every time the encoder as a packet to send */
384
    /* Depends on the encoder if the data starts  */
385
    /* with a Start Code (it should) H.263 does   */
386
    void (*rtp_callback)(void *data, int size, int packet_number); 
387

    
388
    /**
389
     * if you set get_psnr to 1 then after encoding you will have the 
390
     * PSNR on psnr_y/cb/cr
391
     * encoding: set by user (1-> on, 0-> off)
392
     * decoding: unused
393
     */
394
    int get_psnr;
395
    float psnr_y;
396
    float psnr_cb;
397
    float psnr_cr;
398
    
399
    /* statistics, used for 2-pass encoding */
400
    int mv_bits;
401
    int header_bits;
402
    int i_tex_bits;
403
    int p_tex_bits;
404
    int i_count;
405
    int p_count;
406
    int skip_count;
407
    int misc_bits;
408
    
409
    /**
410
     * number of bits used for the previously encoded frame
411
     * encoding: set by lavc
412
     * decoding: - for audio - bits_per_sample
413
     */
414
    int frame_bits;
415
                 
416
    /**
417
     * private data of the user, can be used to carry app specific stuff
418
     * encoding: set by user
419
     * decoding: set by user
420
     */
421
    void *opaque;
422

    
423
    char codec_name[32];
424
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
425
    enum CodecID codec_id; /* see CODEC_ID_xxx */
426
    unsigned int codec_tag;  /* codec tag, only used if unknown codec */
427
    
428
    /**
429
     * workaround bugs in encoders which sometimes cannot be detected automatically
430
     * encoding: unused
431
     * decoding: set by user
432
     */
433
    int workaround_bugs;
434
#define FF_BUG_AUTODETECT       1  //autodetection
435
#define FF_BUG_OLD_MSMPEG4      2
436
#define FF_BUG_XVID_ILACE       4
437
#define FF_BUG_UMP4             8
438
#define FF_BUG_NO_PADDING       16
439
#define FF_BUG_AC_VLC           32
440
#define FF_BUG_QPEL_CHROMA      64
441
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
442
        
443
    /**
444
     * encoding: set by user
445
     * decoding: unused
446
     */
447
    int luma_elim_threshold;
448
    
449
    /**
450
     * encoding: set by user
451
     * decoding: unused
452
     */
453
    int chroma_elim_threshold;
454
    
455
    /**
456
     * strictly follow the std (MPEG4, ...)
457
     * encoding: set by user
458
     * decoding: unused
459
     */
460
    int strict_std_compliance;
461
    
462
    /**
463
     * qscale offset between ip and b frames
464
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
465
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
466
     * encoding: set by user.
467
     * decoding: unused
468
     */
469
    float b_quant_offset;
470
    
471
    /**
472
     * error resilience {-1,0,1} higher values will detect more errors but may missdetect
473
     * some more or less valid parts as errors
474
     * encoding: unused
475
     * decoding: set by user
476
     */
477
    int error_resilience;
478
    
479
    /**
480
     * obsolete, just here to keep ABI compatible (should be removed perhaps, dunno)
481
     */
482
    int *quant_store;
483

    
484
    /**
485
     * QP store stride
486
     * encoding: unused
487
     * decoding: set by lavc
488
     */
489
    int qstride;
490
    
491
    /**
492
     * buffer, where the next picture should be decoded into
493
     * encoding: unused
494
     * decoding: set by user in get_buffer_callback to a buffer into which the next part
495
     *           of the bitstream will be decoded, and set by lavc at end of frame to the
496
     *           next frame which needs to be displayed
497
     */
498
    uint8_t *dr_buffer[3];
499
    
500
    /**
501
     * stride of the luminance part of the dr buffer
502
     * encoding: unused
503
     * decoding: set by user
504
     */
505
    int dr_stride;
506
    
507
    /**
508
     * same behavior as dr_buffer, just for some private data of the user
509
     * encoding: unused
510
     * decoding: set by user in get_buffer_callback, and set by lavc at end of frame
511
     */
512
    void *dr_opaque_frame;
513
    
514
    /**
515
     * called at the beginning of each frame to get a buffer for it
516
     * encoding: unused
517
     * decoding: set by user
518
     */
519
    int (*get_buffer_callback)(struct AVCodecContext *c, int width, int height, int pict_type);
520

    
521
    /**
522
     * is 1 if the decoded stream contains b frames, 0 otherwise
523
     * encoding: unused
524
     * decoding: set by lavc
525
     */
526
    int has_b_frames;
527

    
528
    /**
529
     * stride of the chrominance part of the dr buffer
530
     * encoding: unused
531
     * decoding: set by user
532
     */
533
    int dr_uvstride;
534
    
535
    /**
536
     * number of dr buffers
537
     * encoding: unused
538
     * decoding: set by user
539
     */
540
    int dr_ip_buffer_count;
541
    
542
    int block_align; /* used by some WAV based audio codecs */
543
    
544
    int parse_only; /* decoding only: if true, only parsing is done
545
                       (function avcodec_parse_frame()). The frame
546
                       data is returned. Only MPEG codecs support this now. */
547
    
548
    /**
549
     * 0-> h263 quant 1-> mpeg quant
550
     * encoding: set by user.
551
     * decoding: unused
552
     */
553
    int mpeg_quant;
554
    
555
    /**
556
     * pass1 encoding statistics output buffer
557
     * encoding: set by lavc
558
     * decoding: unused
559
     */
560
    char *stats_out; /* encoding statistics output buffer */
561
    
562
    /**
563
     * pass2 encoding statistics input buffer.
564
     * concatenated stuff from stats_out of pass1 should be placed here
565
     * encoding: allocated/set/freed by user
566
     * decoding: unused
567
     */
568
    char *stats_in;
569
    
570
    /**
571
     * ratecontrol qmin qmax limiting method
572
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
573
     * encoding: set by user.
574
     * decoding: unused
575
     */
576
    float rc_qsquish;
577

    
578
    float rc_qmod_amp;
579
    int rc_qmod_freq;
580
    
581
    /**
582
     * ratecontrol override, see RcOverride
583
     * encoding: allocated/set/freed by user.
584
     * decoding: unused
585
     */
586
    RcOverride *rc_override;
587
    int rc_override_count;
588
    
589
    /**
590
     * rate control equation
591
     * encoding: set by user
592
     * decoding: unused
593
     */
594
    char *rc_eq;
595
    
596
    /**
597
     * maximum bitrate
598
     * encoding: set by user.
599
     * decoding: unused
600
     */
601
    int rc_max_rate;
602
    
603
    /**
604
     * minimum bitrate
605
     * encoding: set by user.
606
     * decoding: unused
607
     */
608
    int rc_min_rate;
609
    
610
    /**
611
     * decoder bitstream buffer size
612
     * encoding: set by user.
613
     * decoding: unused
614
     */
615
    int rc_buffer_size;
616
    float rc_buffer_aggressivity;
617

    
618
    /**
619
     * qscale factor between p and i frames
620
     * encoding: set by user.
621
     * decoding: unused
622
     */
623
    float i_quant_factor;
624
    
625
    /**
626
     * qscale offset between p and i frames
627
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
628
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
629
     * encoding: set by user.
630
     * decoding: unused
631
     */
632
    float i_quant_offset;
633
    
634
    /**
635
     * initial complexity for pass1 ratecontrol
636
     * encoding: set by user.
637
     * decoding: unused
638
     */
639
    float rc_initial_cplx;
640

    
641
    /**
642
     * custom aspect ratio, used if aspect_info==FF_ASPECT_EXTENDED
643
     * encoding: set by user.
644
     * decoding: set by lavc.
645
     */
646
    int aspected_width;
647
    int aspected_height;
648

    
649
    /**
650
     * dct algorithm, see FF_DCT_* below
651
     * encoding: set by user
652
     * decoding: unused
653
     */
654
    int dct_algo;
655
#define FF_DCT_AUTO    0
656
#define FF_DCT_FASTINT 1
657
#define FF_DCT_INT     2
658
#define FF_DCT_MMX     3
659
#define FF_DCT_MLIB    4
660
#define FF_DCT_ALTIVEC 5
661

    
662
    /**
663
     * presentation timestamp in micro seconds (time when frame should be shown to user)
664
     * if 0 then the frame_rate will be used as reference
665
     * encoding: set by user
666
     * decoding; set by lavc
667
     */
668
    long long int pts;
669
    
670
    /**
671
     * luminance masking (0-> disabled)
672
     * encoding: set by user
673
     * decoding: unused
674
     */
675
    float lumi_masking;
676
    
677
    /**
678
     * temporary complexity masking (0-> disabled)
679
     * encoding: set by user
680
     * decoding: unused
681
     */
682
    float temporal_cplx_masking;
683
    
684
    /**
685
     * spatial complexity masking (0-> disabled)
686
     * encoding: set by user
687
     * decoding: unused
688
     */
689
    float spatial_cplx_masking;
690
    
691
    /**
692
     * p block masking (0-> disabled)
693
     * encoding: set by user
694
     * decoding: unused
695
     */
696
    float p_masking;
697

    
698
    /**
699
     * darkness masking (0-> disabled)
700
     * encoding: set by user
701
     * decoding: unused
702
     */
703
    float dark_masking;
704
    
705
    /**
706
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
707
     * this is used to workaround some encoder bugs
708
     * encoding: unused
709
     * decoding: set by user, will be converted to upper case by lavc during init
710
     */
711
    int fourcc;
712

    
713
    /**
714
     * idct algorithm, see FF_IDCT_* below
715
     * encoding: set by user
716
     * decoding: set by user
717
     */
718
    int idct_algo;
719
#define FF_IDCT_AUTO         0
720
#define FF_IDCT_INT          1
721
#define FF_IDCT_SIMPLE       2
722
#define FF_IDCT_SIMPLEMMX    3
723
#define FF_IDCT_LIBMPEG2MMX  4
724
#define FF_IDCT_PS2          5
725
#define FF_IDCT_MLIB         6
726
#define FF_IDCT_ARM          7
727
#define FF_IDCT_ALTIVEC      8
728

    
729
    /**
730
     * slice count
731
     * encoding: set by lavc
732
     * decoding: set by user (or 0)
733
     */
734
    int slice_count;
735
    /**
736
     * slice offsets in the frame in bytes
737
     * encoding: set/allocated by lavc
738
     * decoding: set/allocated by user (or NULL)
739
     */
740
    int *slice_offset;
741

    
742
    /**
743
     * error concealment flags
744
     * encoding: unused
745
     * decoding: set by user
746
     */
747
    int error_concealment;
748
#define FF_EC_GUESS_MVS   1
749
#define FF_EC_DEBLOCK     2
750

    
751
    /**
752
     * QP table of the currently decoded frame
753
     * encoding; unused
754
     * decoding: set by lavc
755
     */
756
    int8_t *current_qscale_table;
757
    /**
758
     * QP table of the currently displayed frame
759
     * encoding; unused
760
     * decoding: set by lavc
761
     */
762
    int8_t *display_qscale_table;
763
    /**
764
     * force specific pict_type.
765
     * encoding; set by user (I/P/B_TYPE)
766
     * decoding: unused
767
     */
768
    int force_type;
769
    /**
770
     * dsp_mask could be used to disable unwanted
771
     * CPU features (i.e. MMX, SSE. ...)
772
     */
773
     unsigned dsp_mask;
774

    
775
    /**
776
     * bits per sample/pixel from the demuxer (needed for huffyuv)
777
     * encoding; set by lavc
778
     * decoding: set by user
779
     */
780
     int bits_per_sample;
781
    
782
    /**
783
     * prediction method (needed for huffyuv)
784
     * encoding; set by user
785
     * decoding: unused
786
     */
787
     int prediction_method;
788
#define FF_PRED_LEFT   0
789
#define FF_PRED_PLANE  1
790
#define FF_PRED_MEDIAN 2
791
} AVCodecContext;
792

    
793
typedef struct AVCodec {
794
    const char *name;
795
    int type;
796
    int id;
797
    int priv_data_size;
798
    int (*init)(AVCodecContext *);
799
    int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
800
    int (*close)(AVCodecContext *);
801
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
802
                  UINT8 *buf, int buf_size);
803
    int capabilities;
804
    struct AVCodec *next;
805
} AVCodec;
806

    
807
/** 
808
 * four components are given, that's all.
809
 * the last component is alpha
810
 */
811
typedef struct AVPicture {
812
    UINT8 *data[4];
813
    int linesize[4];
814
} AVPicture;
815

    
816
extern AVCodec ac3_encoder;
817
extern AVCodec mp2_encoder;
818
extern AVCodec mp3lame_encoder;
819
extern AVCodec oggvorbis_encoder;
820
extern AVCodec mpeg1video_encoder;
821
extern AVCodec h263_encoder;
822
extern AVCodec h263p_encoder;
823
extern AVCodec rv10_encoder;
824
extern AVCodec mjpeg_encoder;
825
extern AVCodec mpeg4_encoder;
826
extern AVCodec msmpeg4v1_encoder;
827
extern AVCodec msmpeg4v2_encoder;
828
extern AVCodec msmpeg4v3_encoder;
829
extern AVCodec wmv1_encoder;
830
extern AVCodec wmv2_encoder;
831
extern AVCodec huffyuv_encoder;
832

    
833
extern AVCodec h263_decoder;
834
extern AVCodec mpeg4_decoder;
835
extern AVCodec msmpeg4v1_decoder;
836
extern AVCodec msmpeg4v2_decoder;
837
extern AVCodec msmpeg4v3_decoder;
838
extern AVCodec wmv1_decoder;
839
extern AVCodec wmv2_decoder;
840
extern AVCodec mpeg_decoder;
841
extern AVCodec h263i_decoder;
842
extern AVCodec rv10_decoder;
843
extern AVCodec svq1_decoder;
844
extern AVCodec dvvideo_decoder;
845
extern AVCodec dvaudio_decoder;
846
extern AVCodec wmav1_decoder;
847
extern AVCodec wmav2_decoder;
848
extern AVCodec mjpeg_decoder;
849
extern AVCodec mp2_decoder;
850
extern AVCodec mp3_decoder;
851
extern AVCodec mace3_decoder;
852
extern AVCodec mace6_decoder;
853
extern AVCodec huffyuv_decoder;
854

    
855
/* pcm codecs */
856
#define PCM_CODEC(id, name) \
857
extern AVCodec name ## _decoder; \
858
extern AVCodec name ## _encoder
859

    
860
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
861
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
862
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
863
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
864
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
865
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
866
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
867
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
868

    
869
/* adpcm codecs */
870

    
871
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
872
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
873
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
874

    
875
#undef PCM_CODEC
876

    
877
/* dummy raw video codec */
878
extern AVCodec rawvideo_codec;
879

    
880
/* the following codecs use external GPL libs */
881
extern AVCodec ac3_decoder;
882

    
883
/* resample.c */
884

    
885
struct ReSampleContext;
886

    
887
typedef struct ReSampleContext ReSampleContext;
888

    
889
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
890
                                     int output_rate, int input_rate);
891
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
892
void audio_resample_close(ReSampleContext *s);
893

    
894
/* YUV420 format is assumed ! */
895

    
896
struct ImgReSampleContext;
897

    
898
typedef struct ImgReSampleContext ImgReSampleContext;
899

    
900
ImgReSampleContext *img_resample_init(int output_width, int output_height,
901
                                      int input_width, int input_height);
902

    
903
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
904
                                      int iwidth, int iheight,
905
                                      int topBand, int bottomBand,
906
                                      int leftBand, int rightBand);
907

    
908
void img_resample(ImgReSampleContext *s, 
909
                  AVPicture *output, AVPicture *input);
910

    
911
void img_resample_close(ImgReSampleContext *s);
912

    
913
void avpicture_fill(AVPicture *picture, UINT8 *ptr,
914
                    int pix_fmt, int width, int height);
915
int avpicture_get_size(int pix_fmt, int width, int height);
916

    
917
/* convert among pixel formats */
918
int img_convert(AVPicture *dst, int dst_pix_fmt,
919
                AVPicture *src, int pix_fmt, 
920
                int width, int height);
921

    
922
/* deinterlace a picture */
923
int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
924
                          int pix_fmt, int width, int height);
925

    
926
/* external high level API */
927

    
928
extern AVCodec *first_avcodec;
929

    
930
/* returns LIBAVCODEC_VERSION_INT constant */
931
unsigned avcodec_version(void);
932
/* returns LIBAVCODEC_BUILD constant */
933
unsigned avcodec_build(void);
934
void avcodec_init(void);
935

    
936
void avcodec_set_bit_exact(void);
937

    
938
void register_avcodec(AVCodec *format);
939
AVCodec *avcodec_find_encoder(enum CodecID id);
940
AVCodec *avcodec_find_encoder_by_name(const char *name);
941
AVCodec *avcodec_find_decoder(enum CodecID id);
942
AVCodec *avcodec_find_decoder_by_name(const char *name);
943
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
944

    
945
AVCodecContext *avcodec_alloc_context(void);
946
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
947
int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples, 
948
                         int *frame_size_ptr,
949
                         UINT8 *buf, int buf_size);
950
int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture, 
951
                         int *got_picture_ptr,
952
                         UINT8 *buf, int buf_size);
953
int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata, 
954
                        int *data_size_ptr,
955
                        UINT8 *buf, int buf_size);
956
int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size, 
957
                         const short *samples);
958
int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size, 
959
                         const AVPicture *pict);
960

    
961
int avcodec_close(AVCodecContext *avctx);
962

    
963
void avcodec_register_all(void);
964

    
965
void avcodec_flush_buffers(AVCodecContext *avctx);
966

    
967
/**
968
 * Interface for 0.5.0 version
969
 *
970
 * do not even think about it's usage for this moment
971
 */
972

    
973
typedef struct {
974
    // compressed size used from given memory buffer
975
    int size;
976
    /// I/P/B frame type
977
    int frame_type;
978
} avc_enc_result_t;
979

    
980
/**
981
 * Commands
982
 * order can't be changed - once it was defined
983
 */
984
typedef enum {
985
    // general commands
986
    AVC_OPEN_BY_NAME = 0xACA000,
987
    AVC_OPEN_BY_CODEC_ID,
988
    AVC_OPEN_BY_FOURCC,
989
    AVC_CLOSE,
990

    
991
    AVC_FLUSH,
992
    // pin - struct { uint8_t* src, uint_t src_size }
993
    // pout - struct { AVPicture* img, consumed_bytes,
994
    AVC_DECODE,
995
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
996
    // pout - uint_t used_from_dest_size
997
    AVC_ENCODE, 
998

    
999
    // query/get video commands
1000
    AVC_GET_VERSION = 0xACB000,
1001
    AVC_GET_WIDTH,
1002
    AVC_GET_HEIGHT,
1003
    AVC_GET_DELAY,
1004
    AVC_GET_QUANT_TABLE,
1005
    // ...
1006

    
1007
    // query/get audio commands
1008
    AVC_GET_FRAME_SIZE = 0xABC000,
1009

    
1010
    // maybe define some simple structure which
1011
    // might be passed to the user - but they can't
1012
    // contain any codec specific parts and these
1013
    // calls are usualy necessary only few times
1014

    
1015
    // set video commands
1016
    AVC_SET_WIDTH = 0xACD000,
1017
    AVC_SET_HEIGHT,
1018

    
1019
    // set video encoding commands
1020
    AVC_SET_FRAME_RATE = 0xACD800,
1021
    AVC_SET_QUALITY,
1022
    AVC_SET_HURRY_UP,
1023

    
1024
    // set audio commands
1025
    AVC_SET_SAMPLE_RATE = 0xACE000,
1026
    AVC_SET_CHANNELS,
1027

    
1028
} avc_cmd_t;
1029

    
1030
/**
1031
 * \param handle  allocated private structure by libavcodec
1032
 *                for initialization pass NULL - will be returned pout
1033
 *                user is supposed to know nothing about its structure
1034
 * \param cmd     type of operation to be performed
1035
 * \param pint    input parameter
1036
 * \param pout    output parameter
1037
 *
1038
 * \returns  command status - eventually for query command it might return
1039
 * integer resulting value
1040
 */
1041
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1042

    
1043
/* memory */
1044
void *av_malloc(unsigned int size);
1045
void *av_mallocz(unsigned int size);
1046
void av_free(void *ptr);
1047
void __av_freep(void **ptr);
1048
#define av_freep(p) __av_freep((void **)(p))
1049

    
1050
#endif /* AVCODEC_H */