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ffmpeg / libavcodec / avcodec.h @ 2bbf7177

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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       4647
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#define LIBAVCODEC_BUILD_STR   "4647"
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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_MJPEGB,
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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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};
61

    
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enum PixelFormat {
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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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    PIX_FMT_RGB565,
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    PIX_FMT_RGB555,
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//    PIX_FMT_RGB5551,
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    PIX_FMT_BGR565,
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    PIX_FMT_BGR555,
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//    PIX_FMT_GBR565,
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//    PIX_FMT_GBR555
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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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};
86

    
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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;
112

    
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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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120

    
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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 
126
*/
127

    
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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_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 / will fail on b frames */
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#define CODEC_FLAG_ALT_SCAN       0x00100000 /* use alternate scan */
149

    
150
/* codec capabilities */
151

    
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#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
153
#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
155
   used */
156
#define CODEC_CAP_PARSE_ONLY      0x0004
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#define CODEC_CAP_TRUNCATED       0x0008
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#define FRAME_RATE_BASE 10000
160

    
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#define FF_COMMON_FRAME \
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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: \
168
     * decoding: \
169
     */\
170
    uint8_t *base[4];\
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    /**\
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     * 1 -> keyframe, 0-> not\
173
     * encoding: set by lavc\
174
     * 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\
180
     * encoding: set by lavc for coded_picture (and set by user for input)\
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     * decoding: set by lavc\
182
     */\
183
    int pict_type;\
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\
185
    /**\
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     * presentation timestamp in micro seconds (time when frame should be shown to user)\
187
     * 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\
190
     */\
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    long long int pts;\
192
\
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    /**\
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     * picture number in bitstream order.\
195
     * encoding: set by\
196
     * decoding: set by lavc\
197
     */\
198
    int coded_picture_number;\
199
    /**\
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     * encoding: set by\
201
     * decoding: set by lavc\
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     * picture number in display order.\
203
     */\
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    int display_picture_number;\
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\
206
    /**\
207
     * 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\
210
     */\
211
    float quality; \
212
\
213
    /**\
214
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
215
     * set to something large if the buffer has not been used yet \
216
     * encoding: unused\
217
     * decoding: MUST be set by get_buffer()\
218
     */\
219
    int age;\
220
\
221
    /**\
222
     * is this picture used as reference\
223
     * encoding: unused\
224
     * decoding: set by lavc (before get_buffer() call))\
225
     */\
226
    int reference;\
227
\
228
    /**\
229
     * QP table\
230
     * encoding: unused\
231
     * decoding: set by lavc\
232
     */\
233
    int8_t *qscale_table;\
234
    /**\
235
     * QP store stride\
236
     * encoding: unused\
237
     * decoding: set by lavc\
238
     */\
239
    int qstride;\
240
\
241
    /**\
242
     * mbskip_table[mb]>=1 if MB didnt change\
243
     * stride= mb_width = (width+15)>>4\
244
     * encoding: unused\
245
     * decoding: set by lavc\
246
     */\
247
    uint8_t *mbskip_table;\
248
\
249
    /**\
250
     * for some private data of the user\
251
     * encoding: unused\
252
     * decoding: set by user\
253
     */\
254
    void *opaque;\
255
\
256
    /**\
257
     * error\
258
     * encoding: set by lavc if flags&CODEC_FLAG_PSNR\
259
     * decoding: unused\
260
     */\
261
    uint64_t error[4];\
262
\
263
    /**\
264
     * type of the buffer (to keep track of who has to dealloc data[*])\
265
     * encoding: set by the one who allocs it\
266
     * decoding: set by the one who allocs it\
267
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\ 
268
     */\
269
    int type;\
270

    
271
#define FF_BUFFER_TYPE_INTERNAL 1
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#define FF_BUFFER_TYPE_USER     2 // Direct rendering buffers
273
#define FF_BUFFER_TYPE_SHARED   4 // input frame for encoding(wont be dealloced)
274

    
275

    
276
#define FF_I_TYPE 1 // Intra
277
#define FF_P_TYPE 2 // Predicted
278
#define FF_B_TYPE 3 // Bi-dir predicted
279
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
280

    
281
typedef struct AVFrame {
282
    FF_COMMON_FRAME
283
} AVFrame;
284

    
285
typedef struct AVCodecContext {
286
    /**
287
     * the average bitrate
288
     * encoding: set by user. unused for constant quantizer encoding
289
     * decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
290
     */
291
    int bit_rate;
292

    
293
    /**
294
     * number of bits the bitstream is allowed to diverge from the reference
295
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
296
     * encoding: set by user. unused for constant quantizer encoding
297
     * decoding: unused
298
     */
299
    int bit_rate_tolerance; 
300

    
301
    /**
302
     * CODEC_FLAG_*
303
     * encoding: set by user.
304
     * decoding: set by user.
305
     */
306
    int flags;
307

    
308
    /**
309
     * some codecs needs additionnal format info. It is stored here
310
     * encoding: set by user. 
311
     * decoding: set by lavc. (FIXME is this ok?)
312
     */
313
    int sub_id;
314

    
315
    /**
316
     * motion estimation algorithm used for video coding
317
     * encoding: MUST be set by user.
318
     * decoding: unused
319
     */
320
    int me_method;
321

    
322
    /**
323
     * some codecs need / can use extra-data like huffman tables
324
     * mjpeg: huffman tables
325
     * rv10: additional flags
326
     * mpeg4: global headers (they can be in the bitstream or here)
327
     * encoding: set/allocated/freed by lavc.
328
     * decoding: set/allocated/freed by user.
329
     */
330
    void *extradata;
331
    int extradata_size;
332
    
333
    /* video only */
334
    /**
335
     * frames per sec multiplied by FRAME_RATE_BASE
336
     * for variable fps this is the precission, so if the timestamps 
337
     * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
338
     * encoding: MUST be set by user
339
     * decoding: set by lavc. 0 or the frame_rate if available
340
     */
341
    int frame_rate;
342

    
343
    /**
344
     * encoding: MUST be set by user. 
345
     * decoding: set by user, some codecs might override / change it during playback
346
     */
347
    int width, height;
348
    
349
#define FF_ASPECT_SQUARE 1
350
#define FF_ASPECT_4_3_625 2
351
#define FF_ASPECT_4_3_525 3
352
#define FF_ASPECT_16_9_625 4
353
#define FF_ASPECT_16_9_525 5
354
#define FF_ASPECT_EXTENDED 15
355

    
356
    /**
357
     * the number of pictures in a group of pitures, or 0 for intra_only
358
     * encoding: set by user.
359
     * decoding: unused
360
     */
361
    int gop_size;
362

    
363
    /**
364
     * pixel format, see PIX_FMT_xxx
365
     * encoding: unused
366
     * decoding: set by lavc.
367
     */
368
    enum PixelFormat pix_fmt;
369
    
370
    int repeat_pict; /* when decoding, this signal how much the picture */
371
                     /* must be delayed.                                */
372
                     /* extra_delay = (repeat_pict / 2) * (1/fps)       */
373
    
374
    /**
375
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
376
     * decoder to draw an horizontal band. It improve cache usage. Not
377
     * all codecs can do that. You must check the codec capabilities
378
     * before
379
     * encoding: unused
380
     * decoding: set by user.
381
     */
382
    void (*draw_horiz_band)(struct AVCodecContext *s,
383
                            UINT8 **src_ptr, int linesize,
384
                            int y, int width, int height);
385

    
386
    /* audio only */
387
    int sample_rate; /* samples per sec */
388
    int channels;
389
    int sample_fmt;  /* sample format, currenly unused */
390

    
391
    /* the following data should not be initialized */
392
    int frame_size;     /* in samples, initialized when calling 'init' */
393
    int frame_number;   /* audio or video frame number */
394
    int real_pict_num;  /* returns the real picture number of
395
                           previous encoded frame */
396
    
397
    /**
398
     * number of frames the decoded output will be delayed relative to 
399
     * the encoded input
400
     * encoding: set by lavc.
401
     * decoding: unused
402
     */
403
    int delay;
404
    
405
    /* encoding parameters */
406
    float qcompress;  /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
407
    float qblur;      /* amount of qscale smoothing over time (0.0-1.0) */
408
    
409
    /**
410
     * minimum quantizer
411
     * encoding: set by user.
412
     * decoding: unused
413
     */
414
    int qmin;
415

    
416
    /**
417
     * maximum quantizer
418
     * encoding: set by user.
419
     * decoding: unused
420
     */
421
    int qmax;
422

    
423
    /**
424
     * maximum quantizer difference etween frames
425
     * encoding: set by user.
426
     * decoding: unused
427
     */
428
    int max_qdiff;
429

    
430
    /**
431
     * maximum number of b frames between non b frames
432
     * note: the output will be delayed by max_b_frames+1 relative to the input
433
     * encoding: set by user.
434
     * decoding: unused
435
     */
436
    int max_b_frames;
437

    
438
    /**
439
     * qscale factor between ip and b frames
440
     * encoding: set by user.
441
     * decoding: unused
442
     */
443
    float b_quant_factor;
444
    
445
    /** obsolete FIXME remove */
446
    int rc_strategy;
447
    int b_frame_strategy;
448

    
449
    /**
450
     * encoding: unused
451
     * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
452
     */
453
    int hurry_up;
454
    
455
    struct AVCodec *codec;
456
    
457
    void *priv_data;
458

    
459
    /* The following data is for RTP friendly coding */
460
    /* By now only H.263/H.263+/MPEG4 coder honours this   */
461
    int rtp_mode;   /* 1 for activate RTP friendly-mode           */
462
                    /* highers numbers represent more error-prone */
463
                    /* enviroments, by now just "1" exist         */
464
    
465
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
466
                            /* do it's best to deliver a chunk with size    */
467
                            /* below rtp_payload_size, the chunk will start */
468
                            /* with a start code on some codecs like H.263  */
469
                            /* This doesn't take account of any particular  */
470
                            /* headers inside the transmited RTP payload    */
471

    
472
    
473
    /* The RTP callcack: This function is called  */
474
    /* every time the encoder as a packet to send */
475
    /* Depends on the encoder if the data starts  */
476
    /* with a Start Code (it should) H.263 does   */
477
    void (*rtp_callback)(void *data, int size, int packet_number); 
478

    
479
    /* statistics, used for 2-pass encoding */
480
    int mv_bits;
481
    int header_bits;
482
    int i_tex_bits;
483
    int p_tex_bits;
484
    int i_count;
485
    int p_count;
486
    int skip_count;
487
    int misc_bits;
488
    
489
    /**
490
     * number of bits used for the previously encoded frame
491
     * encoding: set by lavc
492
     * decoding: - for audio - bits_per_sample
493
     */
494
    int frame_bits;
495
                 
496
    /**
497
     * private data of the user, can be used to carry app specific stuff
498
     * encoding: set by user
499
     * decoding: set by user
500
     */
501
    void *opaque;
502

    
503
    char codec_name[32];
504
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
505
    enum CodecID codec_id; /* see CODEC_ID_xxx */
506
    unsigned int codec_tag;  /* codec tag, only used if unknown codec */
507
    
508
    /**
509
     * workaround bugs in encoders which sometimes cannot be detected automatically
510
     * encoding: unused
511
     * decoding: set by user
512
     */
513
    int workaround_bugs;
514
#define FF_BUG_AUTODETECT       1  //autodetection
515
#define FF_BUG_OLD_MSMPEG4      2
516
#define FF_BUG_XVID_ILACE       4
517
#define FF_BUG_UMP4             8
518
#define FF_BUG_NO_PADDING       16
519
#define FF_BUG_AC_VLC           32
520
#define FF_BUG_QPEL_CHROMA      64
521
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
522
        
523
    /**
524
     * encoding: set by user
525
     * decoding: unused
526
     */
527
    int luma_elim_threshold;
528
    
529
    /**
530
     * encoding: set by user
531
     * decoding: unused
532
     */
533
    int chroma_elim_threshold;
534
    
535
    /**
536
     * strictly follow the std (MPEG4, ...)
537
     * encoding: set by user
538
     * decoding: unused
539
     */
540
    int strict_std_compliance;
541
    
542
    /**
543
     * qscale offset between ip and b frames
544
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
545
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
546
     * encoding: set by user.
547
     * decoding: unused
548
     */
549
    float b_quant_offset;
550
    
551
    /**
552
     * error resilience higher values will detect more errors but may missdetect
553
     * some more or less valid parts as errors
554
     * encoding: unused
555
     * decoding: set by user
556
     */
557
    int error_resilience;
558
#define FF_ER_CAREFULL        1
559
#define FF_ER_COMPLIANT       2
560
#define FF_ER_AGGRESSIVE      3
561
#define FF_ER_VERY_AGGRESSIVE 4
562
    
563
    /**
564
     * called at the beginning of each frame to get a buffer for it.
565
     * if pic.reference is set then the frame will be read later by lavc
566
     * encoding: unused
567
     * decoding: set by lavc, user can override
568
     */
569
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
570
    
571
    /**
572
     * called to release buffers which where allocated with get_buffer.
573
     * a released buffer can be reused in get_buffer()
574
     * pic.data[*] must be set to NULL
575
     * encoding: unused
576
     * decoding: set by lavc, user can override
577
     */
578
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
579

    
580
    /**
581
     * is 1 if the decoded stream contains b frames, 0 otherwise
582
     * encoding: unused
583
     * decoding: set by lavc
584
     */
585
    int has_b_frames;
586
    
587
    int block_align; /* used by some WAV based audio codecs */
588
    
589
    int parse_only; /* decoding only: if true, only parsing is done
590
                       (function avcodec_parse_frame()). The frame
591
                       data is returned. Only MPEG codecs support this now. */
592
    
593
    /**
594
     * 0-> h263 quant 1-> mpeg quant
595
     * encoding: set by user.
596
     * decoding: unused
597
     */
598
    int mpeg_quant;
599
    
600
    /**
601
     * pass1 encoding statistics output buffer
602
     * encoding: set by lavc
603
     * decoding: unused
604
     */
605
    char *stats_out; /* encoding statistics output buffer */
606
    
607
    /**
608
     * pass2 encoding statistics input buffer.
609
     * concatenated stuff from stats_out of pass1 should be placed here
610
     * encoding: allocated/set/freed by user
611
     * decoding: unused
612
     */
613
    char *stats_in;
614
    
615
    /**
616
     * ratecontrol qmin qmax limiting method
617
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
618
     * encoding: set by user.
619
     * decoding: unused
620
     */
621
    float rc_qsquish;
622

    
623
    float rc_qmod_amp;
624
    int rc_qmod_freq;
625
    
626
    /**
627
     * ratecontrol override, see RcOverride
628
     * encoding: allocated/set/freed by user.
629
     * decoding: unused
630
     */
631
    RcOverride *rc_override;
632
    int rc_override_count;
633
    
634
    /**
635
     * rate control equation
636
     * encoding: set by user
637
     * decoding: unused
638
     */
639
    char *rc_eq;
640
    
641
    /**
642
     * maximum bitrate
643
     * encoding: set by user.
644
     * decoding: unused
645
     */
646
    int rc_max_rate;
647
    
648
    /**
649
     * minimum bitrate
650
     * encoding: set by user.
651
     * decoding: unused
652
     */
653
    int rc_min_rate;
654
    
655
    /**
656
     * decoder bitstream buffer size
657
     * encoding: set by user.
658
     * decoding: unused
659
     */
660
    int rc_buffer_size;
661
    float rc_buffer_aggressivity;
662

    
663
    /**
664
     * qscale factor between p and i frames
665
     * encoding: set by user.
666
     * decoding: unused
667
     */
668
    float i_quant_factor;
669
    
670
    /**
671
     * qscale offset between p and i frames
672
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
673
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
674
     * encoding: set by user.
675
     * decoding: unused
676
     */
677
    float i_quant_offset;
678
    
679
    /**
680
     * initial complexity for pass1 ratecontrol
681
     * encoding: set by user.
682
     * decoding: unused
683
     */
684
    float rc_initial_cplx;
685

    
686
    /**
687
     * dct algorithm, see FF_DCT_* below
688
     * encoding: set by user
689
     * decoding: unused
690
     */
691
    int dct_algo;
692
#define FF_DCT_AUTO    0
693
#define FF_DCT_FASTINT 1
694
#define FF_DCT_INT     2
695
#define FF_DCT_MMX     3
696
#define FF_DCT_MLIB    4
697
#define FF_DCT_ALTIVEC 5
698
    
699
    /**
700
     * luminance masking (0-> disabled)
701
     * encoding: set by user
702
     * decoding: unused
703
     */
704
    float lumi_masking;
705
    
706
    /**
707
     * temporary complexity masking (0-> disabled)
708
     * encoding: set by user
709
     * decoding: unused
710
     */
711
    float temporal_cplx_masking;
712
    
713
    /**
714
     * spatial complexity masking (0-> disabled)
715
     * encoding: set by user
716
     * decoding: unused
717
     */
718
    float spatial_cplx_masking;
719
    
720
    /**
721
     * p block masking (0-> disabled)
722
     * encoding: set by user
723
     * decoding: unused
724
     */
725
    float p_masking;
726

    
727
    /**
728
     * darkness masking (0-> disabled)
729
     * encoding: set by user
730
     * decoding: unused
731
     */
732
    float dark_masking;
733
    
734
    /**
735
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
736
     * this is used to workaround some encoder bugs
737
     * encoding: unused
738
     * decoding: set by user, will be converted to upper case by lavc during init
739
     */
740
    int fourcc;
741

    
742
    /**
743
     * idct algorithm, see FF_IDCT_* below
744
     * encoding: set by user
745
     * decoding: set by user
746
     */
747
    int idct_algo;
748
#define FF_IDCT_AUTO         0
749
#define FF_IDCT_INT          1
750
#define FF_IDCT_SIMPLE       2
751
#define FF_IDCT_SIMPLEMMX    3
752
#define FF_IDCT_LIBMPEG2MMX  4
753
#define FF_IDCT_PS2          5
754
#define FF_IDCT_MLIB         6
755
#define FF_IDCT_ARM          7
756
#define FF_IDCT_ALTIVEC      8
757

    
758
    /**
759
     * slice count
760
     * encoding: set by lavc
761
     * decoding: set by user (or 0)
762
     */
763
    int slice_count;
764
    /**
765
     * slice offsets in the frame in bytes
766
     * encoding: set/allocated by lavc
767
     * decoding: set/allocated by user (or NULL)
768
     */
769
    int *slice_offset;
770

    
771
    /**
772
     * error concealment flags
773
     * encoding: unused
774
     * decoding: set by user
775
     */
776
    int error_concealment;
777
#define FF_EC_GUESS_MVS   1
778
#define FF_EC_DEBLOCK     2
779

    
780
    /**
781
     * dsp_mask could be used to disable unwanted
782
     * CPU features (i.e. MMX, SSE. ...)
783
     */
784
     unsigned dsp_mask;
785

    
786
    /**
787
     * bits per sample/pixel from the demuxer (needed for huffyuv)
788
     * encoding: set by lavc
789
     * decoding: set by user
790
     */
791
     int bits_per_sample;
792
    
793
    /**
794
     * prediction method (needed for huffyuv)
795
     * encoding: set by user
796
     * decoding: unused
797
     */
798
     int prediction_method;
799
#define FF_PRED_LEFT   0
800
#define FF_PRED_PLANE  1
801
#define FF_PRED_MEDIAN 2
802
    
803
    /**
804
     * aspect ratio. (0 if unknown)
805
     * encoding: set by user.
806
     * decoding: set by lavc.
807
     */
808
    float aspect_ratio;
809

    
810
    /**
811
     * the picture in the bitstream
812
     * encoding: set by lavc
813
     * decoding: set by lavc
814
     */
815
    AVFrame *coded_frame;
816

    
817
    /**
818
     * debug 
819
     * encoding: set by user.
820
     * decoding: set by user.
821
     */
822
    int debug;
823
#define FF_DEBUG_PICT_INFO 1
824
#define FF_DEBUG_RC        2
825
#define FF_DEBUG_BITSTREAM 4
826
#define FF_DEBUG_MB_TYPE   8
827
#define FF_DEBUG_QP        16
828
#define FF_DEBUG_MV        32
829
#define FF_DEBUG_VIS_MV    64
830
#define FF_DEBUG_SKIP      128
831
    
832
    /**
833
     * error
834
     * encoding: set by lavc if flags&CODEC_FLAG_PSNR
835
     * decoding: unused
836
     */
837
    uint64_t error[4];
838
    
839
    /**
840
     * minimum MB quantizer
841
     * encoding: set by user.
842
     * decoding: unused
843
     */
844
    int mb_qmin;
845

    
846
    /**
847
     * maximum MB quantizer
848
     * encoding: set by user.
849
     * decoding: unused
850
     */
851
    int mb_qmax;
852
    
853
    /**
854
     * motion estimation compare function
855
     * encoding: set by user.
856
     * decoding: unused
857
     */
858
    int me_cmp;
859
    /**
860
     * subpixel motion estimation compare function
861
     * encoding: set by user.
862
     * decoding: unused
863
     */
864
    int me_sub_cmp;
865
    /**
866
     * macroblock compare function (not supported yet)
867
     * encoding: set by user.
868
     * decoding: unused
869
     */
870
    int mb_cmp;
871
#define FF_CMP_SAD  0
872
#define FF_CMP_SSE  1
873
#define FF_CMP_SATD 2
874
#define FF_CMP_DCT  3
875
#define FF_CMP_PSNR 4
876
#define FF_CMP_BIT  5
877
#define FF_CMP_RD   6
878
#define FF_CMP_ZERO 7
879
#define FF_CMP_CHROMA 256
880
    
881
    /**
882
     * ME diamond size
883
     * encoding: set by user.
884
     * decoding: unused
885
     */
886
    int dia_size;
887
} AVCodecContext;
888

    
889
typedef struct AVCodec {
890
    const char *name;
891
    int type;
892
    int id;
893
    int priv_data_size;
894
    int (*init)(AVCodecContext *);
895
    int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
896
    int (*close)(AVCodecContext *);
897
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
898
                  UINT8 *buf, int buf_size);
899
    int capabilities;
900
    struct AVCodec *next;
901
} AVCodec;
902

    
903
/** 
904
 * four components are given, that's all.
905
 * the last component is alpha
906
 */
907
typedef struct AVPicture {
908
    UINT8 *data[4];
909
    int linesize[4];
910
} AVPicture;
911

    
912
extern AVCodec ac3_encoder;
913
extern AVCodec mp2_encoder;
914
extern AVCodec mp3lame_encoder;
915
extern AVCodec oggvorbis_encoder;
916
extern AVCodec mpeg1video_encoder;
917
extern AVCodec h263_encoder;
918
extern AVCodec h263p_encoder;
919
extern AVCodec rv10_encoder;
920
extern AVCodec mjpeg_encoder;
921
extern AVCodec mpeg4_encoder;
922
extern AVCodec msmpeg4v1_encoder;
923
extern AVCodec msmpeg4v2_encoder;
924
extern AVCodec msmpeg4v3_encoder;
925
extern AVCodec wmv1_encoder;
926
extern AVCodec wmv2_encoder;
927
extern AVCodec huffyuv_encoder;
928

    
929
extern AVCodec h263_decoder;
930
extern AVCodec mpeg4_decoder;
931
extern AVCodec msmpeg4v1_decoder;
932
extern AVCodec msmpeg4v2_decoder;
933
extern AVCodec msmpeg4v3_decoder;
934
extern AVCodec wmv1_decoder;
935
extern AVCodec wmv2_decoder;
936
extern AVCodec mpeg_decoder;
937
extern AVCodec h263i_decoder;
938
extern AVCodec rv10_decoder;
939
extern AVCodec svq1_decoder;
940
extern AVCodec dvvideo_decoder;
941
extern AVCodec dvaudio_decoder;
942
extern AVCodec wmav1_decoder;
943
extern AVCodec wmav2_decoder;
944
extern AVCodec mjpeg_decoder;
945
extern AVCodec mjpegb_decoder;
946
extern AVCodec mp2_decoder;
947
extern AVCodec mp3_decoder;
948
extern AVCodec mace3_decoder;
949
extern AVCodec mace6_decoder;
950
extern AVCodec huffyuv_decoder;
951
extern AVCodec oggvorbis_decoder;
952

    
953
/* pcm codecs */
954
#define PCM_CODEC(id, name) \
955
extern AVCodec name ## _decoder; \
956
extern AVCodec name ## _encoder
957

    
958
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
959
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
960
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
961
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
962
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
963
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
964
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
965
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
966

    
967
/* adpcm codecs */
968

    
969
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
970
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
971
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
972

    
973
#undef PCM_CODEC
974

    
975
/* dummy raw video codec */
976
extern AVCodec rawvideo_codec;
977

    
978
/* the following codecs use external GPL libs */
979
extern AVCodec ac3_decoder;
980

    
981
/* resample.c */
982

    
983
struct ReSampleContext;
984

    
985
typedef struct ReSampleContext ReSampleContext;
986

    
987
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
988
                                     int output_rate, int input_rate);
989
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
990
void audio_resample_close(ReSampleContext *s);
991

    
992
/* YUV420 format is assumed ! */
993

    
994
struct ImgReSampleContext;
995

    
996
typedef struct ImgReSampleContext ImgReSampleContext;
997

    
998
ImgReSampleContext *img_resample_init(int output_width, int output_height,
999
                                      int input_width, int input_height);
1000

    
1001
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1002
                                      int iwidth, int iheight,
1003
                                      int topBand, int bottomBand,
1004
                                      int leftBand, int rightBand);
1005

    
1006
void img_resample(ImgReSampleContext *s, 
1007
                  AVPicture *output, AVPicture *input);
1008

    
1009
void img_resample_close(ImgReSampleContext *s);
1010

    
1011
void avpicture_fill(AVPicture *picture, UINT8 *ptr,
1012
                    int pix_fmt, int width, int height);
1013
int avpicture_get_size(int pix_fmt, int width, int height);
1014
void avcodec_get_chroma_sub_sample(int fmt, int *h_shift, int *v_shift);
1015

    
1016
/* convert among pixel formats */
1017
int img_convert(AVPicture *dst, int dst_pix_fmt,
1018
                AVPicture *src, int pix_fmt, 
1019
                int width, int height);
1020

    
1021
/* deinterlace a picture */
1022
int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
1023
                          int pix_fmt, int width, int height);
1024

    
1025
/* external high level API */
1026

    
1027
extern AVCodec *first_avcodec;
1028

    
1029
/* returns LIBAVCODEC_VERSION_INT constant */
1030
unsigned avcodec_version(void);
1031
/* returns LIBAVCODEC_BUILD constant */
1032
unsigned avcodec_build(void);
1033
void avcodec_init(void);
1034

    
1035
void avcodec_set_bit_exact(void);
1036

    
1037
void register_avcodec(AVCodec *format);
1038
AVCodec *avcodec_find_encoder(enum CodecID id);
1039
AVCodec *avcodec_find_encoder_by_name(const char *name);
1040
AVCodec *avcodec_find_decoder(enum CodecID id);
1041
AVCodec *avcodec_find_decoder_by_name(const char *name);
1042
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1043

    
1044
void avcodec_get_context_defaults(AVCodecContext *s);
1045
AVCodecContext *avcodec_alloc_context(void);
1046
AVFrame *avcodec_alloc_frame(void);
1047

    
1048
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1049
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1050

    
1051
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1052
int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples, 
1053
                         int *frame_size_ptr,
1054
                         UINT8 *buf, int buf_size);
1055
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
1056
                         int *got_picture_ptr,
1057
                         UINT8 *buf, int buf_size);
1058
int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata, 
1059
                        int *data_size_ptr,
1060
                        UINT8 *buf, int buf_size);
1061
int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size, 
1062
                         const short *samples);
1063
int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size, 
1064
                         const AVFrame *pict);
1065

    
1066
int avcodec_close(AVCodecContext *avctx);
1067

    
1068
void avcodec_register_all(void);
1069

    
1070
void avcodec_flush_buffers(AVCodecContext *avctx);
1071

    
1072
/**
1073
 * Interface for 0.5.0 version
1074
 *
1075
 * do not even think about it's usage for this moment
1076
 */
1077

    
1078
typedef struct {
1079
    // compressed size used from given memory buffer
1080
    int size;
1081
    /// I/P/B frame type
1082
    int frame_type;
1083
} avc_enc_result_t;
1084

    
1085
/**
1086
 * Commands
1087
 * order can't be changed - once it was defined
1088
 */
1089
typedef enum {
1090
    // general commands
1091
    AVC_OPEN_BY_NAME = 0xACA000,
1092
    AVC_OPEN_BY_CODEC_ID,
1093
    AVC_OPEN_BY_FOURCC,
1094
    AVC_CLOSE,
1095

    
1096
    AVC_FLUSH,
1097
    // pin - struct { uint8_t* src, uint_t src_size }
1098
    // pout - struct { AVPicture* img, consumed_bytes,
1099
    AVC_DECODE,
1100
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1101
    // pout - uint_t used_from_dest_size
1102
    AVC_ENCODE, 
1103

    
1104
    // query/get video commands
1105
    AVC_GET_VERSION = 0xACB000,
1106
    AVC_GET_WIDTH,
1107
    AVC_GET_HEIGHT,
1108
    AVC_GET_DELAY,
1109
    AVC_GET_QUANT_TABLE,
1110
    // ...
1111

    
1112
    // query/get audio commands
1113
    AVC_GET_FRAME_SIZE = 0xABC000,
1114

    
1115
    // maybe define some simple structure which
1116
    // might be passed to the user - but they can't
1117
    // contain any codec specific parts and these
1118
    // calls are usualy necessary only few times
1119

    
1120
    // set video commands
1121
    AVC_SET_WIDTH = 0xACD000,
1122
    AVC_SET_HEIGHT,
1123

    
1124
    // set video encoding commands
1125
    AVC_SET_FRAME_RATE = 0xACD800,
1126
    AVC_SET_QUALITY,
1127
    AVC_SET_HURRY_UP,
1128

    
1129
    // set audio commands
1130
    AVC_SET_SAMPLE_RATE = 0xACE000,
1131
    AVC_SET_CHANNELS,
1132

    
1133
} avc_cmd_t;
1134

    
1135
/**
1136
 * \param handle  allocated private structure by libavcodec
1137
 *                for initialization pass NULL - will be returned pout
1138
 *                user is supposed to know nothing about its structure
1139
 * \param cmd     type of operation to be performed
1140
 * \param pint    input parameter
1141
 * \param pout    output parameter
1142
 *
1143
 * \returns  command status - eventually for query command it might return
1144
 * integer resulting value
1145
 */
1146
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1147

    
1148
/* memory */
1149
void *av_malloc(unsigned int size);
1150
void *av_mallocz(unsigned int size);
1151
void av_free(void *ptr);
1152
void __av_freep(void **ptr);
1153
#define av_freep(p) __av_freep((void **)(p))
1154
/* for static data only */
1155
/* call av_free_static to release all staticaly allocated tables */
1156
void av_free_static();
1157
void *__av_mallocz_static(void** location, unsigned int size);
1158
#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1159

    
1160
#endif /* AVCODEC_H */