Fix a crash caused by a null coded_picture pointer in ffserver.
[libav.git] / libavcodec / avcodec.h
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1#ifndef AVCODEC_H
2#define AVCODEC_H
3
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4#include "common.h"
5
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6#define LIBAVCODEC_VERSION_INT 0x000406
7#define LIBAVCODEC_VERSION "0.4.6"
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8#define LIBAVCODEC_BUILD 4644
9#define LIBAVCODEC_BUILD_STR "4644"
4b1f4f23 10
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11enum CodecID {
12 CODEC_ID_NONE,
13 CODEC_ID_MPEG1VIDEO,
14 CODEC_ID_H263,
15 CODEC_ID_RV10,
16 CODEC_ID_MP2,
9d36bdc9 17 CODEC_ID_MP3LAME,
81e0d0b4 18 CODEC_ID_VORBIS,
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19 CODEC_ID_AC3,
20 CODEC_ID_MJPEG,
b135d9fb 21 CODEC_ID_MJPEGB,
bf89e6b1 22 CODEC_ID_MPEG4,
de6d9b64 23 CODEC_ID_RAWVIDEO,
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24 CODEC_ID_MSMPEG4V1,
25 CODEC_ID_MSMPEG4V2,
26 CODEC_ID_MSMPEG4V3,
e1a9dbff 27 CODEC_ID_WMV1,
b50eef3a 28 CODEC_ID_WMV2,
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29 CODEC_ID_H263P,
30 CODEC_ID_H263I,
be8ffec9 31 CODEC_ID_SVQ1,
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32 CODEC_ID_DVVIDEO,
33 CODEC_ID_DVAUDIO,
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34 CODEC_ID_WMAV1,
35 CODEC_ID_WMAV2,
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36 CODEC_ID_MACE3,
37 CODEC_ID_MACE6,
11f18faf 38 CODEC_ID_HUFFYUV,
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39
40 /* various pcm "codecs" */
41 CODEC_ID_PCM_S16LE,
42 CODEC_ID_PCM_S16BE,
43 CODEC_ID_PCM_U16LE,
44 CODEC_ID_PCM_U16BE,
45 CODEC_ID_PCM_S8,
46 CODEC_ID_PCM_U8,
47 CODEC_ID_PCM_MULAW,
48 CODEC_ID_PCM_ALAW,
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49
50 /* various adpcm codecs */
51 CODEC_ID_ADPCM_IMA_QT,
52 CODEC_ID_ADPCM_IMA_WAV,
53 CODEC_ID_ADPCM_MS,
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54};
55
56enum CodecType {
4a663d80 57 CODEC_TYPE_UNKNOWN = -1,
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58 CODEC_TYPE_VIDEO,
59 CODEC_TYPE_AUDIO,
60};
61
62enum PixelFormat {
9f862d11 63 PIX_FMT_ANY = -1,
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64 PIX_FMT_YUV420P,
65 PIX_FMT_YUV422,
66 PIX_FMT_RGB24,
67 PIX_FMT_BGR24,
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68 PIX_FMT_YUV422P,
69 PIX_FMT_YUV444P,
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70 PIX_FMT_RGBA32,
71 PIX_FMT_BGRA32,
e9feea59 72 PIX_FMT_YUV410P,
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73 PIX_FMT_YUV411P,
74 PIX_FMT_RGB565,
75 PIX_FMT_RGB555,
76// PIX_FMT_RGB5551,
77 PIX_FMT_BGR565,
78 PIX_FMT_BGR555,
79// PIX_FMT_GBR565,
80// PIX_FMT_GBR555
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81};
82
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83/* currently unused, may be used if 24/32 bits samples ever supported */
84enum SampleFormat {
85 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
86};
87
de6d9b64 88/* in bytes */
bc8d1857 89#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 90
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91/**
92 * Required number of zero bytes at the end of the input bitstream for decoding.
93 * to avoid overreading (and possibly segfaulting)
94 */
95#define FF_INPUT_BUFFER_PADDING_SIZE 8
96
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97/* motion estimation type, EPZS by default */
98enum Motion_Est_ID {
101bea5f 99 ME_ZERO = 1,
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100 ME_FULL,
101 ME_LOG,
102 ME_PHODS,
103 ME_EPZS,
104 ME_X1
105};
106
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107typedef struct RcOverride{
108 int start_frame;
109 int end_frame;
110 int qscale; // if this is 0 then quality_factor will be used instead
111 float quality_factor;
112} RcOverride;
113
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114/* only for ME compatiblity with old apps */
115extern int motion_estimation_method;
116
e4986da9 117/* ME algos sorted by quality */
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118static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
119 ME_X1, ME_EPZS, ME_FULL };
de6d9b64 120
28db7fce 121
4e00e76b 122#define FF_MAX_B_FRAMES 8
9dbcbd92 123
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124/* encoding support
125 these flags can be passed in AVCodecContext.flags before initing
126 Note: note not everything is supported yet
127*/
de6d9b64 128
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129#define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
130#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
131#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
132#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
133#define CODEC_FLAG_GMC 0x0020 /* use GMC */
b71901e6 134#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
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135/* parent program gurantees that the input for b-frame containing streams is not written to
136 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 137#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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138#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
139#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
e84c31dc 140#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
b71901e6 141#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
93a21abd 142#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
140cb663 143#define CODEC_FLAG_PSNR 0x8000 /* error[?] variables will be set during encoding */
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144#define CODEC_FLAG_TRUNCATED 0x00010000 /* input bitstream might be truncated at a random location instead
145 of only at frame boundaries */
c5d309f2 146#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
fcb48651 147#define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
9f9c3229 148#define CODEC_FLAG_LOW_DELAY 0x00080000 /* force low delay / will fail on b frames */
5d3cea3a 149#define CODEC_FLAG_ALT_SCAN 0x00100000 /* use alternate scan */
c5d309f2 150
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151/* codec capabilities */
152
b71901e6 153#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
93a21abd 154#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
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155/* if 'parse_only' field is true, then avcodec_parse_frame() can be
156 used */
157#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 158#define CODEC_CAP_TRUNCATED 0x0008
bf89e6b1 159
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160#define FRAME_RATE_BASE 10000
161
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162#define FF_COMMON_PICTURE \
163 uint8_t *data[4];\
164 int linesize[4];\
165 /**\
32db2b1d 166 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
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167 * this isnt used by lavc unless the default get/release_buffer() is used\
168 * encoding: \
169 * decoding: \
170 */\
171 uint8_t *base[4];\
172 /**\
173 * 1 -> keyframe, 0-> not\
174 * encoding: set by lavc\
175 * decoding: set by lavc\
176 */\
177 int key_frame;\
178\
179 /**\
180 * picture type of the frame, see ?_TYPE below\
181 * encoding: set by lavc for coded_picture (and set by user for input)\
182 * decoding: set by lavc\
183 */\
184 int pict_type;\
185\
186 /**\
187 * presentation timestamp in micro seconds (time when frame should be shown to user)\
188 * if 0 then the frame_rate will be used as reference\
189 * encoding: MUST be set by user\
190 * decoding: set by lavc\
191 */\
192 long long int pts;\
193\
194 /**\
195 * picture number in bitstream order.\
196 * encoding: set by\
197 * decoding: set by lavc\
198 */\
199 int coded_picture_number;\
200 /**\
201 * encoding: set by\
202 * decoding: set by lavc\
203 * picture number in display order.\
204 */\
205 int display_picture_number;\
206\
207 /**\
208 * quality (between 1 (good) and 31 (bad)) \
209 * encoding: set by lavc for coded_picture (and set by user for input)\
210 * decoding: set by lavc\
211 */\
212 float quality; \
213\
214 /**\
215 * buffer age (1->was last buffer and dint change, 2->..., ...).\
216 * set to something large if the buffer has not been used yet \
217 * encoding: unused\
218 * decoding: MUST be set by get_buffer()\
219 */\
220 int age;\
221\
222 /**\
223 * is this picture used as reference\
224 * encoding: unused\
225 * decoding: set by lavc (before get_buffer() call))\
226 */\
227 int reference;\
228\
229 /**\
230 * QP table\
231 * encoding: unused\
232 * decoding: set by lavc\
233 */\
234 int8_t *qscale_table;\
235 /**\
236 * QP store stride\
237 * encoding: unused\
238 * decoding: set by lavc\
239 */\
240 int qstride;\
241\
242 /**\
243 * mbskip_table[mb]>=1 if MB didnt change\
244 * stride= mb_width = (width+15)>>4\
245 * encoding: unused\
246 * decoding: set by lavc\
247 */\
248 uint8_t *mbskip_table;\
249\
250 /**\
251 * for some private data of the user\
252 * encoding: unused\
253 * decoding: set by user\
254 */\
255 void *opaque;\
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256\
257 /**\
258 * error\
259 * encoding: set by lavc if flags&CODEC_FLAG_PSNR\
260 * decoding: unused\
261 */\
262 uint64_t error[4];\
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263\
264 /**\
265 * type of the buffer (to keep track of who has to dealloc data[*])\
266 * encoding: set by the one who allocs it\
267 * decoding: set by the one who allocs it\
268 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
269 */\
270 int type;\
271
272#define FF_BUFFER_TYPE_INTERNAL 1
273#define FF_BUFFER_TYPE_USER 2 // Direct rendering buffers
274#define FF_BUFFER_TYPE_SHARED 4 // input frame for encoding(wont be dealloced)
275
1e491e29 276
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277#define FF_I_TYPE 1 // Intra
278#define FF_P_TYPE 2 // Predicted
279#define FF_B_TYPE 3 // Bi-dir predicted
280#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
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281
282typedef struct AVVideoFrame {
283 FF_COMMON_PICTURE
284} AVVideoFrame;
285
de6d9b64 286typedef struct AVCodecContext {
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287 /**
288 * the average bitrate
289 * encoding: set by user. unused for constant quantizer encoding
290 * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
291 */
de6d9b64 292 int bit_rate;
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293
294 /**
295 * number of bits the bitstream is allowed to diverge from the reference
296 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
297 * encoding: set by user. unused for constant quantizer encoding
298 * decoding: unused
299 */
300 int bit_rate_tolerance;
301
302 /**
303 * CODEC_FLAG_*
304 * encoding: set by user.
305 * decoding: set by user.
306 */
de6d9b64 307 int flags;
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308
309 /**
310 * some codecs needs additionnal format info. It is stored here
311 * encoding: set by user.
312 * decoding: set by lavc. (FIXME is this ok?)
313 */
314 int sub_id;
315
316 /**
317 * motion estimation algorithm used for video coding
1e491e29 318 * encoding: MUST be set by user.
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319 * decoding: unused
320 */
321 int me_method;
322
323 /**
324 * some codecs need / can use extra-data like huffman tables
325 * mjpeg: huffman tables
326 * rv10: additional flags
b704e742 327 * mpeg4: global headers (they can be in the bitstream or here)
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328 * encoding: set/allocated/freed by lavc.
329 * decoding: set/allocated/freed by user.
b71901e6 330 */
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331 void *extradata;
332 int extradata_size;
333
de6d9b64 334 /* video only */
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335 /**
336 * frames per sec multiplied by FRAME_RATE_BASE
337 * for variable fps this is the precission, so if the timestamps
338 * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
1e491e29 339 * encoding: MUST be set by user
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340 * decoding: set by lavc. 0 or the frame_rate if available
341 */
342 int frame_rate;
343
344 /**
1e491e29 345 * encoding: MUST be set by user.
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346 * decoding: set by user, some codecs might override / change it during playback
347 */
de6d9b64 348 int width, height;
b71901e6 349
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350#define FF_ASPECT_SQUARE 1
351#define FF_ASPECT_4_3_625 2
352#define FF_ASPECT_4_3_525 3
353#define FF_ASPECT_16_9_625 4
354#define FF_ASPECT_16_9_525 5
e769f053 355#define FF_ASPECT_EXTENDED 15
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356
357 /**
358 * the number of pictures in a group of pitures, or 0 for intra_only
359 * encoding: set by user.
360 * decoding: unused
361 */
362 int gop_size;
363
364 /**
365 * pixel format, see PIX_FMT_xxx
366 * encoding: unused
367 * decoding: set by lavc.
368 */
369 enum PixelFormat pix_fmt;
370
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371 int repeat_pict; /* when decoding, this signal how much the picture */
372 /* must be delayed. */
373 /* extra_delay = (repeat_pict / 2) * (1/fps) */
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374
375 /**
376 * if non NULL, 'draw_horiz_band' is called by the libavcodec
377 * decoder to draw an horizontal band. It improve cache usage. Not
378 * all codecs can do that. You must check the codec capabilities
379 * before
380 * encoding: unused
381 * decoding: set by user.
382 */
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383 void (*draw_horiz_band)(struct AVCodecContext *s,
384 UINT8 **src_ptr, int linesize,
385 int y, int width, int height);
386
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387 /* audio only */
388 int sample_rate; /* samples per sec */
389 int channels;
a96b68b7 390 int sample_fmt; /* sample format, currenly unused */
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391
392 /* the following data should not be initialized */
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393 int frame_size; /* in samples, initialized when calling 'init' */
394 int frame_number; /* audio or video frame number */
395 int real_pict_num; /* returns the real picture number of
396 previous encoded frame */
1e491e29 397
b71901e6 398 /**
1e491e29 399 * 1 -> keyframe, 0-> not (this if for audio only, for video, AVVideoFrame.key_frame should be used)
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400 * encoding: set by lavc (for the outputed bitstream, not the input frame)
401 * decoding: set by lavc (for the decoded bitstream, not the displayed frame)
402 */
403 int key_frame;
404
405 /**
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406 * number of frames the decoded output will be delayed relative to
407 * the encoded input
408 * encoding: set by lavc.
409 * decoding: unused
410 */
411 int delay;
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412
413 /* encoding parameters */
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414 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
415 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
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416
417 /**
418 * minimum quantizer
419 * encoding: set by user.
420 * decoding: unused
421 */
422 int qmin;
423
424 /**
425 * maximum quantizer
426 * encoding: set by user.
427 * decoding: unused
428 */
429 int qmax;
430
431 /**
432 * maximum quantizer difference etween frames
433 * encoding: set by user.
434 * decoding: unused
435 */
436 int max_qdiff;
437
438 /**
439 * maximum number of b frames between non b frames
440 * note: the output will be delayed by max_b_frames+1 relative to the input
441 * encoding: set by user.
442 * decoding: unused
443 */
444 int max_b_frames;
445
446 /**
447 * qscale factor between ip and b frames
448 * encoding: set by user.
449 * decoding: unused
450 */
451 float b_quant_factor;
452
453 /** obsolete FIXME remove */
454 int rc_strategy;
8b4c7dbc 455 int b_frame_strategy;
9dbcbd92 456
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457 /**
458 * encoding: unused
347ae22e 459 * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
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460 */
461 int hurry_up;
2417652e 462
de6d9b64 463 struct AVCodec *codec;
b71901e6 464
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465 void *priv_data;
466
644d98a4 467 /* The following data is for RTP friendly coding */
1f6b6e50 468 /* By now only H.263/H.263+/MPEG4 coder honours this */
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469 int rtp_mode; /* 1 for activate RTP friendly-mode */
470 /* highers numbers represent more error-prone */
471 /* enviroments, by now just "1" exist */
472
473 int rtp_payload_size; /* The size of the RTP payload, the coder will */
474 /* do it's best to deliver a chunk with size */
475 /* below rtp_payload_size, the chunk will start */
476 /* with a start code on some codecs like H.263 */
477 /* This doesn't take account of any particular */
478 /* headers inside the transmited RTP payload */
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479
480
481 /* The RTP callcack: This function is called */
482 /* every time the encoder as a packet to send */
483 /* Depends on the encoder if the data starts */
484 /* with a Start Code (it should) H.263 does */
485 void (*rtp_callback)(void *data, int size, int packet_number);
486
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487 /* statistics, used for 2-pass encoding */
488 int mv_bits;
489 int header_bits;
490 int i_tex_bits;
491 int p_tex_bits;
492 int i_count;
493 int p_count;
494 int skip_count;
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495 int misc_bits;
496
497 /**
498 * number of bits used for the previously encoded frame
499 * encoding: set by lavc
8350df97 500 * decoding: - for audio - bits_per_sample
b71901e6 501 */
098eefe1 502 int frame_bits;
644d98a4 503
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504 /**
505 * private data of the user, can be used to carry app specific stuff
506 * encoding: set by user
507 * decoding: set by user
508 */
509 void *opaque;
510
de6d9b64 511 char codec_name[32];
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512 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
513 enum CodecID codec_id; /* see CODEC_ID_xxx */
de6d9b64 514 unsigned int codec_tag; /* codec tag, only used if unknown codec */
92ba5ffb 515
b71901e6 516 /**
4d2858de 517 * workaround bugs in encoders which sometimes cannot be detected automatically
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518 * encoding: unused
519 * decoding: set by user
520 */
521 int workaround_bugs;
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522#define FF_BUG_AUTODETECT 1 //autodetection
523#define FF_BUG_OLD_MSMPEG4 2
524#define FF_BUG_XVID_ILACE 4
525#define FF_BUG_UMP4 8
526#define FF_BUG_NO_PADDING 16
527#define FF_BUG_AC_VLC 32
03e93d35 528#define FF_BUG_QPEL_CHROMA 64
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529//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
530
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531 /**
532 * encoding: set by user
533 * decoding: unused
534 */
1f6b6e50 535 int luma_elim_threshold;
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536
537 /**
538 * encoding: set by user
539 * decoding: unused
540 */
1f6b6e50 541 int chroma_elim_threshold;
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542
543 /**
544 * strictly follow the std (MPEG4, ...)
545 * encoding: set by user
546 * decoding: unused
547 */
548 int strict_std_compliance;
549
550 /**
551 * qscale offset between ip and b frames
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552 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
553 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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554 * encoding: set by user.
555 * decoding: unused
556 */
557 float b_quant_offset;
558
559 /**
ce3bcaed 560 * error resilience higher values will detect more errors but may missdetect
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561 * some more or less valid parts as errors
562 * encoding: unused
563 * decoding: set by user
564 */
1f6b6e50 565 int error_resilience;
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566#define FF_ER_CAREFULL 1
567#define FF_ER_COMPLIANT 2
568#define FF_ER_AGGRESSIVE 3
569#define FF_ER_VERY_AGGRESSIVE 4
ae72cda6 570
6b72ac63 571 /**
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572 * called at the beginning of each frame to get a buffer for it.
573 * if pic.reference is set then the frame will be read later by lavc
b71901e6 574 * encoding: unused
1e491e29 575 * decoding: set by lavc, user can override
b71901e6 576 */
1e491e29 577 int (*get_buffer)(struct AVCodecContext *c, AVVideoFrame *pic);
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578
579 /**
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580 * called to release buffers which where allocated with get_buffer.
581 * a released buffer can be reused in get_buffer()
582 * pic.data[*] must be set to NULL
b71901e6 583 * encoding: unused
1e491e29 584 * decoding: set by lavc, user can override
b71901e6 585 */
1e491e29 586 void (*release_buffer)(struct AVCodecContext *c, AVVideoFrame *pic);
0fd90455 587
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588 /**
589 * is 1 if the decoded stream contains b frames, 0 otherwise
590 * encoding: unused
591 * decoding: set by lavc
592 */
593 int has_b_frames;
b71901e6 594
bc8d1857 595 int block_align; /* used by some WAV based audio codecs */
ce980a95 596
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597 int parse_only; /* decoding only: if true, only parsing is done
598 (function avcodec_parse_frame()). The frame
599 data is returned. Only MPEG codecs support this now. */
ce980a95 600
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601 /**
602 * 0-> h263 quant 1-> mpeg quant
603 * encoding: set by user.
604 * decoding: unused
605 */
606 int mpeg_quant;
ce980a95 607
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608 /**
609 * pass1 encoding statistics output buffer
610 * encoding: set by lavc
611 * decoding: unused
612 */
ce980a95 613 char *stats_out; /* encoding statistics output buffer */
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614
615 /**
616 * pass2 encoding statistics input buffer.
617 * concatenated stuff from stats_out of pass1 should be placed here
618 * encoding: allocated/set/freed by user
619 * decoding: unused
620 */
621 char *stats_in;
622
623 /**
624 * ratecontrol qmin qmax limiting method
625 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
626 * encoding: set by user.
627 * decoding: unused
628 */
ce980a95 629 float rc_qsquish;
b71901e6 630
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631 float rc_qmod_amp;
632 int rc_qmod_freq;
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633
634 /**
635 * ratecontrol override, see RcOverride
636 * encoding: allocated/set/freed by user.
637 * decoding: unused
638 */
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639 RcOverride *rc_override;
640 int rc_override_count;
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641
642 /**
643 * rate control equation
644 * encoding: set by user
645 * decoding: unused
646 */
ce980a95 647 char *rc_eq;
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648
649 /**
650 * maximum bitrate
651 * encoding: set by user.
652 * decoding: unused
653 */
ce980a95 654 int rc_max_rate;
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655
656 /**
657 * minimum bitrate
658 * encoding: set by user.
659 * decoding: unused
660 */
ce980a95 661 int rc_min_rate;
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662
663 /**
664 * decoder bitstream buffer size
665 * encoding: set by user.
666 * decoding: unused
667 */
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668 int rc_buffer_size;
669 float rc_buffer_aggressivity;
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670
671 /**
672 * qscale factor between p and i frames
673 * encoding: set by user.
674 * decoding: unused
675 */
676 float i_quant_factor;
677
678 /**
679 * qscale offset between p and i frames
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680 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
681 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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682 * encoding: set by user.
683 * decoding: unused
684 */
685 float i_quant_offset;
686
687 /**
688 * initial complexity for pass1 ratecontrol
689 * encoding: set by user.
690 * decoding: unused
691 */
ce980a95 692 float rc_initial_cplx;
917e06c8 693
b71901e6 694 /**
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695 * dct algorithm, see FF_DCT_* below
696 * encoding: set by user
697 * decoding: unused
698 */
28db7fce 699 int dct_algo;
c7e07931 700#define FF_DCT_AUTO 0
28db7fce 701#define FF_DCT_FASTINT 1
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702#define FF_DCT_INT 2
703#define FF_DCT_MMX 3
704#define FF_DCT_MLIB 4
05c4072b 705#define FF_DCT_ALTIVEC 5
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706
707 /**
708 * luminance masking (0-> disabled)
709 * encoding: set by user
710 * decoding: unused
711 */
712 float lumi_masking;
713
714 /**
715 * temporary complexity masking (0-> disabled)
716 * encoding: set by user
717 * decoding: unused
718 */
719 float temporal_cplx_masking;
720
721 /**
722 * spatial complexity masking (0-> disabled)
723 * encoding: set by user
724 * decoding: unused
725 */
726 float spatial_cplx_masking;
727
728 /**
729 * p block masking (0-> disabled)
730 * encoding: set by user
731 * decoding: unused
732 */
733 float p_masking;
15415af4 734
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735 /**
736 * darkness masking (0-> disabled)
737 * encoding: set by user
738 * decoding: unused
739 */
740 float dark_masking;
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741
742 /**
743 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
744 * this is used to workaround some encoder bugs
745 * encoding: unused
202ef8b8 746 * decoding: set by user, will be converted to upper case by lavc during init
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747 */
748 int fourcc;
5e746b99 749
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750 /**
751 * idct algorithm, see FF_IDCT_* below
752 * encoding: set by user
753 * decoding: set by user
754 */
755 int idct_algo;
756#define FF_IDCT_AUTO 0
757#define FF_IDCT_INT 1
758#define FF_IDCT_SIMPLE 2
759#define FF_IDCT_SIMPLEMMX 3
760#define FF_IDCT_LIBMPEG2MMX 4
761#define FF_IDCT_PS2 5
762#define FF_IDCT_MLIB 6
763#define FF_IDCT_ARM 7
05c4072b 764#define FF_IDCT_ALTIVEC 8
2ad1516a 765
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766 /**
767 * slice count
768 * encoding: set by lavc
769 * decoding: set by user (or 0)
770 */
771 int slice_count;
772 /**
773 * slice offsets in the frame in bytes
774 * encoding: set/allocated by lavc
775 * decoding: set/allocated by user (or NULL)
776 */
777 int *slice_offset;
778
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779 /**
780 * error concealment flags
781 * encoding: unused
782 * decoding: set by user
783 */
784 int error_concealment;
785#define FF_EC_GUESS_MVS 1
786#define FF_EC_DEBLOCK 2
787
6b72ac63 788 /**
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789 * dsp_mask could be used to disable unwanted
790 * CPU features (i.e. MMX, SSE. ...)
791 */
792 unsigned dsp_mask;
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793
794 /**
795 * bits per sample/pixel from the demuxer (needed for huffyuv)
1e491e29 796 * encoding: set by lavc
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797 * decoding: set by user
798 */
799 int bits_per_sample;
800
801 /**
802 * prediction method (needed for huffyuv)
1e491e29 803 * encoding: set by user
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804 * decoding: unused
805 */
806 int prediction_method;
807#define FF_PRED_LEFT 0
808#define FF_PRED_PLANE 1
809#define FF_PRED_MEDIAN 2
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810
811 /**
812 * aspect ratio. (0 if unknown)
813 * encoding: set by user.
814 * decoding: set by lavc.
815 */
816 float aspect_ratio;
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817
818 /**
819 * the picture in the bitstream
820 * encoding: set by lavc
821 * decoding: set by lavc
822 */
823 AVVideoFrame *coded_picture;
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824
825 /**
826 * debug
827 * encoding: set by user.
828 * decoding: set by user.
829 */
830 int debug;
831#define FF_DEBUG_PICT_INFO 1
832#define FF_DEBUG_RC 2
833#define FF_DEBUG_BITSTREAM 4
834#define FF_DEBUG_MB_TYPE 8
835#define FF_DEBUG_QP 16
836#define FF_DEBUG_MV 32
837#define FF_DEBUG_VIS_MV 64
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838
839 /**
840 * error
841 * encoding: set by lavc if flags&CODEC_FLAG_PSNR
842 * decoding: unused
843 */
844 uint64_t error[4];
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845} AVCodecContext;
846
847typedef struct AVCodec {
18f77016 848 const char *name;
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849 int type;
850 int id;
851 int priv_data_size;
852 int (*init)(AVCodecContext *);
853 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
854 int (*close)(AVCodecContext *);
0fd90455 855 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
de6d9b64 856 UINT8 *buf, int buf_size);
bf89e6b1 857 int capabilities;
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858 struct AVCodec *next;
859} AVCodec;
860
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861/**
862 * four components are given, that's all.
863 * the last component is alpha
864 */
de6d9b64 865typedef struct AVPicture {
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866 UINT8 *data[4];
867 int linesize[4];
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868} AVPicture;
869
870extern AVCodec ac3_encoder;
871extern AVCodec mp2_encoder;
9d36bdc9 872extern AVCodec mp3lame_encoder;
81e0d0b4 873extern AVCodec oggvorbis_encoder;
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874extern AVCodec mpeg1video_encoder;
875extern AVCodec h263_encoder;
876extern AVCodec h263p_encoder;
877extern AVCodec rv10_encoder;
878extern AVCodec mjpeg_encoder;
bf89e6b1 879extern AVCodec mpeg4_encoder;
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880extern AVCodec msmpeg4v1_encoder;
881extern AVCodec msmpeg4v2_encoder;
882extern AVCodec msmpeg4v3_encoder;
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883extern AVCodec wmv1_encoder;
884extern AVCodec wmv2_encoder;
11f18faf 885extern AVCodec huffyuv_encoder;
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886
887extern AVCodec h263_decoder;
bf89e6b1 888extern AVCodec mpeg4_decoder;
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889extern AVCodec msmpeg4v1_decoder;
890extern AVCodec msmpeg4v2_decoder;
891extern AVCodec msmpeg4v3_decoder;
e1a9dbff 892extern AVCodec wmv1_decoder;
0151a6f5 893extern AVCodec wmv2_decoder;
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894extern AVCodec mpeg_decoder;
895extern AVCodec h263i_decoder;
896extern AVCodec rv10_decoder;
be8ffec9 897extern AVCodec svq1_decoder;
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898extern AVCodec dvvideo_decoder;
899extern AVCodec dvaudio_decoder;
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900extern AVCodec wmav1_decoder;
901extern AVCodec wmav2_decoder;
4e66ab3b 902extern AVCodec mjpeg_decoder;
b135d9fb 903extern AVCodec mjpegb_decoder;
4b1f4f23 904extern AVCodec mp2_decoder;
a96b68b7 905extern AVCodec mp3_decoder;
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906extern AVCodec mace3_decoder;
907extern AVCodec mace6_decoder;
11f18faf 908extern AVCodec huffyuv_decoder;
3aca208a 909extern AVCodec oggvorbis_decoder;
de6d9b64 910
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911/* pcm codecs */
912#define PCM_CODEC(id, name) \
913extern AVCodec name ## _decoder; \
f11d3f23 914extern AVCodec name ## _encoder
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915
916PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
917PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
918PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
919PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
920PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
921PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
922PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
923PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
924
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925/* adpcm codecs */
926
927PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
928PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
929PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
930
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931#undef PCM_CODEC
932
933/* dummy raw video codec */
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934extern AVCodec rawvideo_codec;
935
936/* the following codecs use external GPL libs */
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937extern AVCodec ac3_decoder;
938
939/* resample.c */
940
941struct ReSampleContext;
942
943typedef struct ReSampleContext ReSampleContext;
944
945ReSampleContext *audio_resample_init(int output_channels, int input_channels,
946 int output_rate, int input_rate);
947int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
948void audio_resample_close(ReSampleContext *s);
949
950/* YUV420 format is assumed ! */
951
952struct ImgReSampleContext;
953
954typedef struct ImgReSampleContext ImgReSampleContext;
955
956ImgReSampleContext *img_resample_init(int output_width, int output_height,
957 int input_width, int input_height);
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958
959ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
960 int iwidth, int iheight,
961 int topBand, int bottomBand,
962 int leftBand, int rightBand);
963
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964void img_resample(ImgReSampleContext *s,
965 AVPicture *output, AVPicture *input);
966
967void img_resample_close(ImgReSampleContext *s);
968
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969void avpicture_fill(AVPicture *picture, UINT8 *ptr,
970 int pix_fmt, int width, int height);
971int avpicture_get_size(int pix_fmt, int width, int height);
1e491e29 972void avcodec_get_chroma_sub_sample(int fmt, int *h_shift, int *v_shift);
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973
974/* convert among pixel formats */
975int img_convert(AVPicture *dst, int dst_pix_fmt,
976 AVPicture *src, int pix_fmt,
977 int width, int height);
978
979/* deinterlace a picture */
980int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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981 int pix_fmt, int width, int height);
982
983/* external high level API */
984
985extern AVCodec *first_avcodec;
986
156e5023 987/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 988unsigned avcodec_version(void);
8bceb6af 989/* returns LIBAVCODEC_BUILD constant */
51a49663 990unsigned avcodec_build(void);
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991void avcodec_init(void);
992
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993void avcodec_set_bit_exact(void);
994
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995void register_avcodec(AVCodec *format);
996AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 997AVCodec *avcodec_find_encoder_by_name(const char *name);
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998AVCodec *avcodec_find_decoder(enum CodecID id);
999AVCodec *avcodec_find_decoder_by_name(const char *name);
1000void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1001
1e491e29 1002void avcodec_get_context_defaults(AVCodecContext *s);
7ffbb60e 1003AVCodecContext *avcodec_alloc_context(void);
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1004AVVideoFrame *avcodec_alloc_picture(void);
1005
1006int avcodec_default_get_buffer(AVCodecContext *s, AVVideoFrame *pic);
1007void avcodec_default_release_buffer(AVCodecContext *s, AVVideoFrame *pic);
1008
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1009int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1010int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
1011 int *frame_size_ptr,
1012 UINT8 *buf, int buf_size);
1e491e29 1013int avcodec_decode_video(AVCodecContext *avctx, AVVideoFrame *picture,
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1014 int *got_picture_ptr,
1015 UINT8 *buf, int buf_size);
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1016int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
1017 int *data_size_ptr,
1018 UINT8 *buf, int buf_size);
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1019int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1020 const short *samples);
1021int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1e491e29 1022 const AVVideoFrame *pict);
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1023
1024int avcodec_close(AVCodecContext *avctx);
1025
1026void avcodec_register_all(void);
a96b68b7 1027
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1028void avcodec_flush_buffers(AVCodecContext *avctx);
1029
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1030/**
1031 * Interface for 0.5.0 version
1032 *
1033 * do not even think about it's usage for this moment
1034 */
1035
1036typedef struct {
1037 // compressed size used from given memory buffer
1038 int size;
1039 /// I/P/B frame type
1040 int frame_type;
1041} avc_enc_result_t;
1042
1043/**
1044 * Commands
1045 * order can't be changed - once it was defined
1046 */
1047typedef enum {
1048 // general commands
1049 AVC_OPEN_BY_NAME = 0xACA000,
1050 AVC_OPEN_BY_CODEC_ID,
1051 AVC_OPEN_BY_FOURCC,
1052 AVC_CLOSE,
1053
1054 AVC_FLUSH,
1055 // pin - struct { uint8_t* src, uint_t src_size }
1056 // pout - struct { AVPicture* img, consumed_bytes,
1057 AVC_DECODE,
1058 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1059 // pout - uint_t used_from_dest_size
1060 AVC_ENCODE,
1061
1062 // query/get video commands
1063 AVC_GET_VERSION = 0xACB000,
1064 AVC_GET_WIDTH,
1065 AVC_GET_HEIGHT,
1066 AVC_GET_DELAY,
1067 AVC_GET_QUANT_TABLE,
1068 // ...
1069
1070 // query/get audio commands
1071 AVC_GET_FRAME_SIZE = 0xABC000,
1072
1073 // maybe define some simple structure which
1074 // might be passed to the user - but they can't
1075 // contain any codec specific parts and these
1076 // calls are usualy necessary only few times
1077
1078 // set video commands
1079 AVC_SET_WIDTH = 0xACD000,
1080 AVC_SET_HEIGHT,
1081
1082 // set video encoding commands
1083 AVC_SET_FRAME_RATE = 0xACD800,
1084 AVC_SET_QUALITY,
1085 AVC_SET_HURRY_UP,
1086
1087 // set audio commands
1088 AVC_SET_SAMPLE_RATE = 0xACE000,
1089 AVC_SET_CHANNELS,
1090
1091} avc_cmd_t;
1092
1093/**
1094 * \param handle allocated private structure by libavcodec
1095 * for initialization pass NULL - will be returned pout
1096 * user is supposed to know nothing about its structure
1097 * \param cmd type of operation to be performed
1098 * \param pint input parameter
1099 * \param pout output parameter
1100 *
1101 * \returns command status - eventually for query command it might return
1102 * integer resulting value
1103 */
1104int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1105
544eb99c 1106/* memory */
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1107void *av_malloc(unsigned int size);
1108void *av_mallocz(unsigned int size);
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1109void av_free(void *ptr);
1110void __av_freep(void **ptr);
1111#define av_freep(p) __av_freep((void **)(p))
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1112/* for static data only */
1113/* call av_free_static to release all staticaly allocated tables */
1114void av_free_static();
1115void *__av_mallocz_static(void** location, unsigned int size);
1116#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
544eb99c 1117
a96b68b7 1118#endif /* AVCODEC_H */