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[libav.git] / libavcodec / avcodec.h
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1#ifndef AVCODEC_H
2#define AVCODEC_H
3
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4/**
5 * @file avcodec.h
6 * @brief
7 * external api header
8 */
9
10
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11#ifdef __cplusplus
12extern "C" {
13#endif
14
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15#include "common.h"
16
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17#define LIBAVCODEC_VERSION_INT 0x000406
18#define LIBAVCODEC_VERSION "0.4.6"
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19#define LIBAVCODEC_BUILD 4657
20#define LIBAVCODEC_BUILD_STR "4657"
4b1f4f23 21
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22enum CodecID {
23 CODEC_ID_NONE,
24 CODEC_ID_MPEG1VIDEO,
25 CODEC_ID_H263,
26 CODEC_ID_RV10,
27 CODEC_ID_MP2,
9d36bdc9 28 CODEC_ID_MP3LAME,
81e0d0b4 29 CODEC_ID_VORBIS,
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30 CODEC_ID_AC3,
31 CODEC_ID_MJPEG,
b135d9fb 32 CODEC_ID_MJPEGB,
bf89e6b1 33 CODEC_ID_MPEG4,
de6d9b64 34 CODEC_ID_RAWVIDEO,
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35 CODEC_ID_MSMPEG4V1,
36 CODEC_ID_MSMPEG4V2,
37 CODEC_ID_MSMPEG4V3,
e1a9dbff 38 CODEC_ID_WMV1,
b50eef3a 39 CODEC_ID_WMV2,
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40 CODEC_ID_H263P,
41 CODEC_ID_H263I,
be8ffec9 42 CODEC_ID_SVQ1,
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43 CODEC_ID_DVVIDEO,
44 CODEC_ID_DVAUDIO,
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45 CODEC_ID_WMAV1,
46 CODEC_ID_WMAV2,
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47 CODEC_ID_MACE3,
48 CODEC_ID_MACE6,
11f18faf 49 CODEC_ID_HUFFYUV,
f70f7c6d 50 CODEC_ID_CYUV,
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51
52 /* various pcm "codecs" */
53 CODEC_ID_PCM_S16LE,
54 CODEC_ID_PCM_S16BE,
55 CODEC_ID_PCM_U16LE,
56 CODEC_ID_PCM_U16BE,
57 CODEC_ID_PCM_S8,
58 CODEC_ID_PCM_U8,
59 CODEC_ID_PCM_MULAW,
60 CODEC_ID_PCM_ALAW,
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61
62 /* various adpcm codecs */
63 CODEC_ID_ADPCM_IMA_QT,
64 CODEC_ID_ADPCM_IMA_WAV,
65 CODEC_ID_ADPCM_MS,
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66};
67
68enum CodecType {
4a663d80 69 CODEC_TYPE_UNKNOWN = -1,
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70 CODEC_TYPE_VIDEO,
71 CODEC_TYPE_AUDIO,
72};
73
74enum PixelFormat {
75 PIX_FMT_YUV420P,
76 PIX_FMT_YUV422,
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77 PIX_FMT_RGB24, /* 3 bytes, R is first */
78 PIX_FMT_BGR24, /* 3 bytes, B is first */
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79 PIX_FMT_YUV422P,
80 PIX_FMT_YUV444P,
dab64ebc 81 PIX_FMT_RGBA32, /* always stored in cpu endianness */
e9feea59 82 PIX_FMT_YUV410P,
a32072d0 83 PIX_FMT_YUV411P,
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84 PIX_FMT_RGB565, /* always stored in cpu endianness */
85 PIX_FMT_RGB555, /* always stored in cpu endianness, most significant bit to 1 */
86 PIX_FMT_GRAY8,
87 PIX_FMT_MONOWHITE, /* 0 is white */
88 PIX_FMT_MONOBLACK, /* 0 is black */
7e6d70d0 89 PIX_FMT_PAL8, /* 8 bit with RGBA palette */
dab64ebc 90 PIX_FMT_NB,
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91};
92
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93/* currently unused, may be used if 24/32 bits samples ever supported */
94enum SampleFormat {
95 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
96};
97
de6d9b64 98/* in bytes */
bc8d1857 99#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 100
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101/**
102 * Required number of zero bytes at the end of the input bitstream for decoding.
103 * to avoid overreading (and possibly segfaulting)
104 */
105#define FF_INPUT_BUFFER_PADDING_SIZE 8
106
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107/* motion estimation type, EPZS by default */
108enum Motion_Est_ID {
101bea5f 109 ME_ZERO = 1,
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110 ME_FULL,
111 ME_LOG,
112 ME_PHODS,
113 ME_EPZS,
114 ME_X1
115};
116
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117typedef struct RcOverride{
118 int start_frame;
119 int end_frame;
120 int qscale; // if this is 0 then quality_factor will be used instead
121 float quality_factor;
122} RcOverride;
123
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124/* only for ME compatiblity with old apps */
125extern int motion_estimation_method;
126
e4986da9 127/* ME algos sorted by quality */
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128static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
129 ME_X1, ME_EPZS, ME_FULL };
de6d9b64 130
28db7fce 131
4e00e76b 132#define FF_MAX_B_FRAMES 8
9dbcbd92 133
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134/* encoding support
135 these flags can be passed in AVCodecContext.flags before initing
136 Note: note not everything is supported yet
137*/
de6d9b64 138
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139#define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
140#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
141#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
142#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
143#define CODEC_FLAG_GMC 0x0020 /* use GMC */
b71901e6 144#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
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145/* parent program gurantees that the input for b-frame containing streams is not written to
146 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 147#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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148#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
149#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
e84c31dc 150#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
b71901e6 151#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
93a21abd 152#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
140cb663 153#define CODEC_FLAG_PSNR 0x8000 /* error[?] variables will be set during encoding */
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154#define CODEC_FLAG_TRUNCATED 0x00010000 /* input bitstream might be truncated at a random location instead
155 of only at frame boundaries */
c5d309f2 156#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
fcb48651 157#define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
9f9c3229 158#define CODEC_FLAG_LOW_DELAY 0x00080000 /* force low delay / will fail on b frames */
5d3cea3a 159#define CODEC_FLAG_ALT_SCAN 0x00100000 /* use alternate scan */
477ab036 160#define CODEC_FLAG_TRELLIS_QUANT 0x00200000 /* use trellis quantization */
70ac76c0 161#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 /* place global headers in extradata instead of every keyframe */
c5d309f2 162
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163/* codec capabilities */
164
b71901e6 165#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
93a21abd 166#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
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167/* if 'parse_only' field is true, then avcodec_parse_frame() can be
168 used */
169#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 170#define CODEC_CAP_TRUNCATED 0x0008
bf89e6b1 171
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172#define FRAME_RATE_BASE 10000
173
492cd3a9 174#define FF_COMMON_FRAME \
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175 uint8_t *data[4];\
176 int linesize[4];\
177 /**\
32db2b1d 178 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
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179 * this isnt used by lavc unless the default get/release_buffer() is used\
180 * encoding: \
181 * decoding: \
182 */\
183 uint8_t *base[4];\
184 /**\
185 * 1 -> keyframe, 0-> not\
186 * encoding: set by lavc\
187 * decoding: set by lavc\
188 */\
189 int key_frame;\
190\
191 /**\
192 * picture type of the frame, see ?_TYPE below\
193 * encoding: set by lavc for coded_picture (and set by user for input)\
194 * decoding: set by lavc\
195 */\
196 int pict_type;\
197\
198 /**\
199 * presentation timestamp in micro seconds (time when frame should be shown to user)\
200 * if 0 then the frame_rate will be used as reference\
201 * encoding: MUST be set by user\
202 * decoding: set by lavc\
203 */\
204 long long int pts;\
205\
206 /**\
207 * picture number in bitstream order.\
208 * encoding: set by\
209 * decoding: set by lavc\
210 */\
211 int coded_picture_number;\
212 /**\
213 * encoding: set by\
214 * decoding: set by lavc\
215 * picture number in display order.\
216 */\
217 int display_picture_number;\
218\
219 /**\
220 * quality (between 1 (good) and 31 (bad)) \
221 * encoding: set by lavc for coded_picture (and set by user for input)\
222 * decoding: set by lavc\
223 */\
224 float quality; \
225\
226 /**\
227 * buffer age (1->was last buffer and dint change, 2->..., ...).\
228 * set to something large if the buffer has not been used yet \
229 * encoding: unused\
230 * decoding: MUST be set by get_buffer()\
231 */\
232 int age;\
233\
234 /**\
235 * is this picture used as reference\
236 * encoding: unused\
237 * decoding: set by lavc (before get_buffer() call))\
238 */\
239 int reference;\
240\
241 /**\
242 * QP table\
243 * encoding: unused\
244 * decoding: set by lavc\
245 */\
246 int8_t *qscale_table;\
247 /**\
248 * QP store stride\
249 * encoding: unused\
250 * decoding: set by lavc\
251 */\
252 int qstride;\
253\
254 /**\
255 * mbskip_table[mb]>=1 if MB didnt change\
256 * stride= mb_width = (width+15)>>4\
257 * encoding: unused\
258 * decoding: set by lavc\
259 */\
260 uint8_t *mbskip_table;\
261\
262 /**\
263 * for some private data of the user\
264 * encoding: unused\
265 * decoding: set by user\
266 */\
267 void *opaque;\
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268\
269 /**\
270 * error\
271 * encoding: set by lavc if flags&CODEC_FLAG_PSNR\
272 * decoding: unused\
273 */\
274 uint64_t error[4];\
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275\
276 /**\
277 * type of the buffer (to keep track of who has to dealloc data[*])\
278 * encoding: set by the one who allocs it\
279 * decoding: set by the one who allocs it\
280 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
281 */\
282 int type;\
283
284#define FF_BUFFER_TYPE_INTERNAL 1
285#define FF_BUFFER_TYPE_USER 2 // Direct rendering buffers
286#define FF_BUFFER_TYPE_SHARED 4 // input frame for encoding(wont be dealloced)
287
1e491e29 288
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289#define FF_I_TYPE 1 // Intra
290#define FF_P_TYPE 2 // Predicted
291#define FF_B_TYPE 3 // Bi-dir predicted
292#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
1e491e29 293
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294typedef struct AVFrame {
295 FF_COMMON_FRAME
296} AVFrame;
1e491e29 297
de6d9b64 298typedef struct AVCodecContext {
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299 /**
300 * the average bitrate
301 * encoding: set by user. unused for constant quantizer encoding
302 * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
303 */
de6d9b64 304 int bit_rate;
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305
306 /**
307 * number of bits the bitstream is allowed to diverge from the reference
308 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
309 * encoding: set by user. unused for constant quantizer encoding
310 * decoding: unused
311 */
312 int bit_rate_tolerance;
313
314 /**
315 * CODEC_FLAG_*
316 * encoding: set by user.
317 * decoding: set by user.
318 */
de6d9b64 319 int flags;
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320
321 /**
322 * some codecs needs additionnal format info. It is stored here
323 * encoding: set by user.
324 * decoding: set by lavc. (FIXME is this ok?)
325 */
326 int sub_id;
327
328 /**
329 * motion estimation algorithm used for video coding
1e491e29 330 * encoding: MUST be set by user.
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331 * decoding: unused
332 */
333 int me_method;
334
335 /**
336 * some codecs need / can use extra-data like huffman tables
337 * mjpeg: huffman tables
338 * rv10: additional flags
b704e742 339 * mpeg4: global headers (they can be in the bitstream or here)
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340 * encoding: set/allocated/freed by lavc.
341 * decoding: set/allocated/freed by user.
b71901e6 342 */
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343 void *extradata;
344 int extradata_size;
345
de6d9b64 346 /* video only */
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347 /**
348 * frames per sec multiplied by FRAME_RATE_BASE
349 * for variable fps this is the precission, so if the timestamps
350 * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
1e491e29 351 * encoding: MUST be set by user
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352 * decoding: set by lavc. 0 or the frame_rate if available
353 */
354 int frame_rate;
355
356 /**
1e491e29 357 * encoding: MUST be set by user.
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358 * decoding: set by user, some codecs might override / change it during playback
359 */
de6d9b64 360 int width, height;
b71901e6 361
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362#define FF_ASPECT_SQUARE 1
363#define FF_ASPECT_4_3_625 2
364#define FF_ASPECT_4_3_525 3
365#define FF_ASPECT_16_9_625 4
366#define FF_ASPECT_16_9_525 5
e769f053 367#define FF_ASPECT_EXTENDED 15
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368
369 /**
370 * the number of pictures in a group of pitures, or 0 for intra_only
371 * encoding: set by user.
372 * decoding: unused
373 */
374 int gop_size;
375
376 /**
377 * pixel format, see PIX_FMT_xxx
378 * encoding: unused
379 * decoding: set by lavc.
380 */
381 enum PixelFormat pix_fmt;
382
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383 int repeat_pict; /* when decoding, this signal how much the picture */
384 /* must be delayed. */
385 /* extra_delay = (repeat_pict / 2) * (1/fps) */
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386
387 /**
388 * if non NULL, 'draw_horiz_band' is called by the libavcodec
389 * decoder to draw an horizontal band. It improve cache usage. Not
390 * all codecs can do that. You must check the codec capabilities
391 * before
392 * encoding: unused
393 * decoding: set by user.
394 */
bf89e6b1 395 void (*draw_horiz_band)(struct AVCodecContext *s,
0c1a9eda 396 uint8_t **src_ptr, int linesize,
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397 int y, int width, int height);
398
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399 /* audio only */
400 int sample_rate; /* samples per sec */
401 int channels;
a96b68b7 402 int sample_fmt; /* sample format, currenly unused */
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403
404 /* the following data should not be initialized */
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405 int frame_size; /* in samples, initialized when calling 'init' */
406 int frame_number; /* audio or video frame number */
407 int real_pict_num; /* returns the real picture number of
408 previous encoded frame */
1e491e29 409
b71901e6 410 /**
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411 * number of frames the decoded output will be delayed relative to
412 * the encoded input
413 * encoding: set by lavc.
414 * decoding: unused
415 */
416 int delay;
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417
418 /* encoding parameters */
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419 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
420 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
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421
422 /**
423 * minimum quantizer
424 * encoding: set by user.
425 * decoding: unused
426 */
427 int qmin;
428
429 /**
430 * maximum quantizer
431 * encoding: set by user.
432 * decoding: unused
433 */
434 int qmax;
435
436 /**
437 * maximum quantizer difference etween frames
438 * encoding: set by user.
439 * decoding: unused
440 */
441 int max_qdiff;
442
443 /**
444 * maximum number of b frames between non b frames
445 * note: the output will be delayed by max_b_frames+1 relative to the input
446 * encoding: set by user.
447 * decoding: unused
448 */
449 int max_b_frames;
450
451 /**
452 * qscale factor between ip and b frames
453 * encoding: set by user.
454 * decoding: unused
455 */
456 float b_quant_factor;
457
458 /** obsolete FIXME remove */
459 int rc_strategy;
8b4c7dbc 460 int b_frame_strategy;
9dbcbd92 461
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462 /**
463 * encoding: unused
347ae22e 464 * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
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465 */
466 int hurry_up;
2417652e 467
de6d9b64 468 struct AVCodec *codec;
b71901e6 469
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470 void *priv_data;
471
644d98a4 472 /* The following data is for RTP friendly coding */
1f6b6e50 473 /* By now only H.263/H.263+/MPEG4 coder honours this */
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474 int rtp_mode; /* 1 for activate RTP friendly-mode */
475 /* highers numbers represent more error-prone */
476 /* enviroments, by now just "1" exist */
477
478 int rtp_payload_size; /* The size of the RTP payload, the coder will */
479 /* do it's best to deliver a chunk with size */
480 /* below rtp_payload_size, the chunk will start */
481 /* with a start code on some codecs like H.263 */
482 /* This doesn't take account of any particular */
483 /* headers inside the transmited RTP payload */
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484
485
486 /* The RTP callcack: This function is called */
487 /* every time the encoder as a packet to send */
488 /* Depends on the encoder if the data starts */
489 /* with a Start Code (it should) H.263 does */
490 void (*rtp_callback)(void *data, int size, int packet_number);
491
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492 /* statistics, used for 2-pass encoding */
493 int mv_bits;
494 int header_bits;
495 int i_tex_bits;
496 int p_tex_bits;
497 int i_count;
498 int p_count;
499 int skip_count;
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500 int misc_bits;
501
502 /**
503 * number of bits used for the previously encoded frame
504 * encoding: set by lavc
8350df97 505 * decoding: - for audio - bits_per_sample
b71901e6 506 */
098eefe1 507 int frame_bits;
644d98a4 508
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509 /**
510 * private data of the user, can be used to carry app specific stuff
511 * encoding: set by user
512 * decoding: set by user
513 */
514 void *opaque;
515
de6d9b64 516 char codec_name[32];
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517 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
518 enum CodecID codec_id; /* see CODEC_ID_xxx */
de6d9b64 519 unsigned int codec_tag; /* codec tag, only used if unknown codec */
92ba5ffb 520
b71901e6 521 /**
4d2858de 522 * workaround bugs in encoders which sometimes cannot be detected automatically
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523 * encoding: unused
524 * decoding: set by user
525 */
526 int workaround_bugs;
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527#define FF_BUG_AUTODETECT 1 //autodetection
528#define FF_BUG_OLD_MSMPEG4 2
529#define FF_BUG_XVID_ILACE 4
530#define FF_BUG_UMP4 8
531#define FF_BUG_NO_PADDING 16
532#define FF_BUG_AC_VLC 32
03e93d35 533#define FF_BUG_QPEL_CHROMA 64
db794953 534#define FF_BUG_STD_QPEL 128
36df8805 535#define FF_BUG_QPEL_CHROMA2 256
c40c3482 536#define FF_BUG_DIRECT_BLOCKSIZE 512
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537//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
538
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539 /**
540 * encoding: set by user
541 * decoding: unused
542 */
1f6b6e50 543 int luma_elim_threshold;
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544
545 /**
546 * encoding: set by user
547 * decoding: unused
548 */
1f6b6e50 549 int chroma_elim_threshold;
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550
551 /**
552 * strictly follow the std (MPEG4, ...)
553 * encoding: set by user
554 * decoding: unused
555 */
556 int strict_std_compliance;
557
558 /**
559 * qscale offset between ip and b frames
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560 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
561 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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562 * encoding: set by user.
563 * decoding: unused
564 */
565 float b_quant_offset;
566
567 /**
ce3bcaed 568 * error resilience higher values will detect more errors but may missdetect
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569 * some more or less valid parts as errors
570 * encoding: unused
571 * decoding: set by user
572 */
1f6b6e50 573 int error_resilience;
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574#define FF_ER_CAREFULL 1
575#define FF_ER_COMPLIANT 2
576#define FF_ER_AGGRESSIVE 3
577#define FF_ER_VERY_AGGRESSIVE 4
ae72cda6 578
6b72ac63 579 /**
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580 * called at the beginning of each frame to get a buffer for it.
581 * if pic.reference is set then the frame will be read later by lavc
b71901e6 582 * encoding: unused
1e491e29 583 * decoding: set by lavc, user can override
b71901e6 584 */
492cd3a9 585 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
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586
587 /**
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588 * called to release buffers which where allocated with get_buffer.
589 * a released buffer can be reused in get_buffer()
590 * pic.data[*] must be set to NULL
b71901e6 591 * encoding: unused
1e491e29 592 * decoding: set by lavc, user can override
b71901e6 593 */
492cd3a9 594 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
0fd90455 595
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596 /**
597 * is 1 if the decoded stream contains b frames, 0 otherwise
598 * encoding: unused
599 * decoding: set by lavc
600 */
601 int has_b_frames;
b71901e6 602
bc8d1857 603 int block_align; /* used by some WAV based audio codecs */
ce980a95 604
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605 int parse_only; /* decoding only: if true, only parsing is done
606 (function avcodec_parse_frame()). The frame
607 data is returned. Only MPEG codecs support this now. */
ce980a95 608
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609 /**
610 * 0-> h263 quant 1-> mpeg quant
611 * encoding: set by user.
612 * decoding: unused
613 */
614 int mpeg_quant;
ce980a95 615
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616 /**
617 * pass1 encoding statistics output buffer
618 * encoding: set by lavc
619 * decoding: unused
620 */
ce980a95 621 char *stats_out; /* encoding statistics output buffer */
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622
623 /**
624 * pass2 encoding statistics input buffer.
625 * concatenated stuff from stats_out of pass1 should be placed here
626 * encoding: allocated/set/freed by user
627 * decoding: unused
628 */
629 char *stats_in;
630
631 /**
632 * ratecontrol qmin qmax limiting method
633 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
634 * encoding: set by user.
635 * decoding: unused
636 */
ce980a95 637 float rc_qsquish;
b71901e6 638
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639 float rc_qmod_amp;
640 int rc_qmod_freq;
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641
642 /**
643 * ratecontrol override, see RcOverride
644 * encoding: allocated/set/freed by user.
645 * decoding: unused
646 */
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647 RcOverride *rc_override;
648 int rc_override_count;
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649
650 /**
651 * rate control equation
652 * encoding: set by user
653 * decoding: unused
654 */
ce980a95 655 char *rc_eq;
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656
657 /**
658 * maximum bitrate
659 * encoding: set by user.
660 * decoding: unused
661 */
ce980a95 662 int rc_max_rate;
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663
664 /**
665 * minimum bitrate
666 * encoding: set by user.
667 * decoding: unused
668 */
ce980a95 669 int rc_min_rate;
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670
671 /**
672 * decoder bitstream buffer size
673 * encoding: set by user.
674 * decoding: unused
675 */
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676 int rc_buffer_size;
677 float rc_buffer_aggressivity;
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678
679 /**
680 * qscale factor between p and i frames
681 * encoding: set by user.
682 * decoding: unused
683 */
684 float i_quant_factor;
685
686 /**
687 * qscale offset between p and i frames
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688 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
689 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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690 * encoding: set by user.
691 * decoding: unused
692 */
693 float i_quant_offset;
694
695 /**
696 * initial complexity for pass1 ratecontrol
697 * encoding: set by user.
698 * decoding: unused
699 */
ce980a95 700 float rc_initial_cplx;
917e06c8 701
b71901e6 702 /**
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703 * dct algorithm, see FF_DCT_* below
704 * encoding: set by user
705 * decoding: unused
706 */
28db7fce 707 int dct_algo;
c7e07931 708#define FF_DCT_AUTO 0
28db7fce 709#define FF_DCT_FASTINT 1
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710#define FF_DCT_INT 2
711#define FF_DCT_MMX 3
712#define FF_DCT_MLIB 4
05c4072b 713#define FF_DCT_ALTIVEC 5
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714
715 /**
716 * luminance masking (0-> disabled)
717 * encoding: set by user
718 * decoding: unused
719 */
720 float lumi_masking;
721
722 /**
723 * temporary complexity masking (0-> disabled)
724 * encoding: set by user
725 * decoding: unused
726 */
727 float temporal_cplx_masking;
728
729 /**
730 * spatial complexity masking (0-> disabled)
731 * encoding: set by user
732 * decoding: unused
733 */
734 float spatial_cplx_masking;
735
736 /**
737 * p block masking (0-> disabled)
738 * encoding: set by user
739 * decoding: unused
740 */
741 float p_masking;
15415af4 742
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743 /**
744 * darkness masking (0-> disabled)
745 * encoding: set by user
746 * decoding: unused
747 */
748 float dark_masking;
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749
750 /**
751 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
752 * this is used to workaround some encoder bugs
753 * encoding: unused
202ef8b8 754 * decoding: set by user, will be converted to upper case by lavc during init
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755 */
756 int fourcc;
5e746b99 757
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758 /**
759 * idct algorithm, see FF_IDCT_* below
760 * encoding: set by user
761 * decoding: set by user
762 */
763 int idct_algo;
764#define FF_IDCT_AUTO 0
765#define FF_IDCT_INT 1
766#define FF_IDCT_SIMPLE 2
767#define FF_IDCT_SIMPLEMMX 3
768#define FF_IDCT_LIBMPEG2MMX 4
769#define FF_IDCT_PS2 5
770#define FF_IDCT_MLIB 6
771#define FF_IDCT_ARM 7
05c4072b 772#define FF_IDCT_ALTIVEC 8
2ad1516a 773
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774 /**
775 * slice count
776 * encoding: set by lavc
777 * decoding: set by user (or 0)
778 */
779 int slice_count;
780 /**
781 * slice offsets in the frame in bytes
782 * encoding: set/allocated by lavc
783 * decoding: set/allocated by user (or NULL)
784 */
785 int *slice_offset;
786
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787 /**
788 * error concealment flags
789 * encoding: unused
790 * decoding: set by user
791 */
792 int error_concealment;
793#define FF_EC_GUESS_MVS 1
794#define FF_EC_DEBLOCK 2
795
6b72ac63 796 /**
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797 * dsp_mask could be used to disable unwanted
798 * CPU features (i.e. MMX, SSE. ...)
799 */
800 unsigned dsp_mask;
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801
802 /**
803 * bits per sample/pixel from the demuxer (needed for huffyuv)
1e491e29 804 * encoding: set by lavc
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805 * decoding: set by user
806 */
807 int bits_per_sample;
808
809 /**
810 * prediction method (needed for huffyuv)
1e491e29 811 * encoding: set by user
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812 * decoding: unused
813 */
814 int prediction_method;
815#define FF_PRED_LEFT 0
816#define FF_PRED_PLANE 1
817#define FF_PRED_MEDIAN 2
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818
819 /**
820 * aspect ratio. (0 if unknown)
821 * encoding: set by user.
822 * decoding: set by lavc.
823 */
824 float aspect_ratio;
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825
826 /**
827 * the picture in the bitstream
828 * encoding: set by lavc
829 * decoding: set by lavc
830 */
492cd3a9 831 AVFrame *coded_frame;
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832
833 /**
834 * debug
835 * encoding: set by user.
836 * decoding: set by user.
837 */
838 int debug;
839#define FF_DEBUG_PICT_INFO 1
840#define FF_DEBUG_RC 2
841#define FF_DEBUG_BITSTREAM 4
842#define FF_DEBUG_MB_TYPE 8
843#define FF_DEBUG_QP 16
844#define FF_DEBUG_MV 32
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845#define FF_DEBUG_VIS_MV 0x00000040
846#define FF_DEBUG_SKIP 0x00000080
847#define FF_DEBUG_STARTCODE 0x00000100
848#define FF_DEBUG_PTS 0x00000200
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849
850 /**
851 * error
852 * encoding: set by lavc if flags&CODEC_FLAG_PSNR
853 * decoding: unused
854 */
855 uint64_t error[4];
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856
857 /**
858 * minimum MB quantizer
859 * encoding: set by user.
860 * decoding: unused
861 */
862 int mb_qmin;
863
864 /**
865 * maximum MB quantizer
866 * encoding: set by user.
867 * decoding: unused
868 */
869 int mb_qmax;
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870
871 /**
872 * motion estimation compare function
873 * encoding: set by user.
874 * decoding: unused
875 */
876 int me_cmp;
877 /**
878 * subpixel motion estimation compare function
879 * encoding: set by user.
880 * decoding: unused
881 */
882 int me_sub_cmp;
883 /**
884 * macroblock compare function (not supported yet)
885 * encoding: set by user.
886 * decoding: unused
887 */
888 int mb_cmp;
889#define FF_CMP_SAD 0
890#define FF_CMP_SSE 1
891#define FF_CMP_SATD 2
892#define FF_CMP_DCT 3
893#define FF_CMP_PSNR 4
894#define FF_CMP_BIT 5
895#define FF_CMP_RD 6
896#define FF_CMP_ZERO 7
897#define FF_CMP_CHROMA 256
898
899 /**
b07a5980 900 * ME diamond size & shape
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901 * encoding: set by user.
902 * decoding: unused
903 */
904 int dia_size;
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905
906 /**
907 * amount of previous MV predictors (2a+1 x 2a+1 square)
908 * encoding: set by user.
909 * decoding: unused
910 */
911 int last_predictor_count;
70ac76c0 912
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913 /**
914 * pre pass for motion estimation
915 * encoding: set by user.
916 * decoding: unused
917 */
918 int pre_me;
b07a5980 919
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920 /**
921 * motion estimation pre pass compare function
922 * encoding: set by user.
923 * decoding: unused
924 */
925 int me_pre_cmp;
826f429a 926
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927 /**
928 * ME pre pass diamond size & shape
929 * encoding: set by user.
930 * decoding: unused
931 */
932 int pre_dia_size;
933
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934 /**
935 * subpel ME quality
936 * encoding: set by user.
937 * decoding: unused
938 */
939 int me_subpel_quality;
940
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941 /**
942 * callback to negotiate the pixelFormat
943 * @param fmt is the list of formats which are supported by the codec,
944 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
945 * the first is allways the native one
946 * @return the choosen format
947 * encoding: unused
948 * decoding: set by user, if not set then the native format will always be choosen
949 */
950 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
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951
952 /**
953 * DTG active format information (additionnal aspect ratio
954 * information only used in DVB MPEG2 transport streams). 0 if
955 * not set.
956 *
957 * encoding: unused.
958 * decoding: set by decoder
959 */
960 int dtg_active_format;
961#define FF_DTG_AFD_SAME 8
962#define FF_DTG_AFD_4_3 9
963#define FF_DTG_AFD_16_9 10
964#define FF_DTG_AFD_14_9 11
965#define FF_DTG_AFD_4_3_SP_14_9 13
966#define FF_DTG_AFD_16_9_SP_14_9 14
967#define FF_DTG_AFD_SP_4_3 15
968
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969} AVCodecContext;
970
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971//void avcodec_getopt(AVCodecContext* avctx, const char* str, avc_config_t** config);
972
973typedef struct AVOption {
974 /** options' name */
975 const char *name; /* if name is NULL, it indicates a link to next */
976 /** short English text help */
977 const char *help;
978 /** offset to context structure where the parsed value should be stored */
979 int offset;
980 /** options' type */
981 int type;
982#define FF_OPT_TYPE_BOOL 1 // boolean - true,1,on (or simply presence)
983#define FF_OPT_TYPE_DOUBLE 2 // double
984#define FF_OPT_TYPE_INT 3 // integer
985#define FF_OPT_TYPE_STRING 4 // string (finished with \0)
986#define FF_OPT_TYPE_MASK 0x1f // mask for types - upper bits are various flags
987//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
988#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
989#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
990 /** min value (min == max -> no limits) */
991 double min;
992 /** maximum value for double/int */
993 double max;
994 /** default boo [0,1]l/double/int value */
995 double defval;
996 /**
997 * default string value (with optional semicolon delimited extra option-list
998 * i.e. option1;option2;option3
999 * defval might select other then first argument as default
1000 */
1001 const char *defstr;
1002 const struct AVOption *sub; /* used when name is NULL */
1003 /* when it's NULL return to previous level (or finish reading) */
1004#define FF_OPT_MAX_DEPTH 10
1005} AVOption;
1006
de6d9b64 1007typedef struct AVCodec {
18f77016 1008 const char *name;
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1009 int type;
1010 int id;
1011 int priv_data_size;
1012 int (*init)(AVCodecContext *);
0c1a9eda 1013 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
de6d9b64 1014 int (*close)(AVCodecContext *);
0fd90455 1015 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
0c1a9eda 1016 uint8_t *buf, int buf_size);
bf89e6b1 1017 int capabilities;
97d96aaa 1018 const AVOption *options;
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1019 struct AVCodec *next;
1020} AVCodec;
1021
97d96aaa 1022/**
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1023 * four components are given, that's all.
1024 * the last component is alpha
1025 */
de6d9b64 1026typedef struct AVPicture {
0c1a9eda 1027 uint8_t *data[4];
d7425f59 1028 int linesize[4];
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1029} AVPicture;
1030
1031extern AVCodec ac3_encoder;
1032extern AVCodec mp2_encoder;
9d36bdc9 1033extern AVCodec mp3lame_encoder;
81e0d0b4 1034extern AVCodec oggvorbis_encoder;
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1035extern AVCodec mpeg1video_encoder;
1036extern AVCodec h263_encoder;
1037extern AVCodec h263p_encoder;
1038extern AVCodec rv10_encoder;
1039extern AVCodec mjpeg_encoder;
bf89e6b1 1040extern AVCodec mpeg4_encoder;
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1041extern AVCodec msmpeg4v1_encoder;
1042extern AVCodec msmpeg4v2_encoder;
1043extern AVCodec msmpeg4v3_encoder;
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1044extern AVCodec wmv1_encoder;
1045extern AVCodec wmv2_encoder;
11f18faf 1046extern AVCodec huffyuv_encoder;
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1047
1048extern AVCodec h263_decoder;
bf89e6b1 1049extern AVCodec mpeg4_decoder;
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1050extern AVCodec msmpeg4v1_decoder;
1051extern AVCodec msmpeg4v2_decoder;
1052extern AVCodec msmpeg4v3_decoder;
e1a9dbff 1053extern AVCodec wmv1_decoder;
0151a6f5 1054extern AVCodec wmv2_decoder;
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1055extern AVCodec mpeg_decoder;
1056extern AVCodec h263i_decoder;
1057extern AVCodec rv10_decoder;
be8ffec9 1058extern AVCodec svq1_decoder;
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1059extern AVCodec dvvideo_decoder;
1060extern AVCodec dvaudio_decoder;
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1061extern AVCodec wmav1_decoder;
1062extern AVCodec wmav2_decoder;
4e66ab3b 1063extern AVCodec mjpeg_decoder;
b135d9fb 1064extern AVCodec mjpegb_decoder;
4b1f4f23 1065extern AVCodec mp2_decoder;
a96b68b7 1066extern AVCodec mp3_decoder;
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1067extern AVCodec mace3_decoder;
1068extern AVCodec mace6_decoder;
11f18faf 1069extern AVCodec huffyuv_decoder;
3aca208a 1070extern AVCodec oggvorbis_decoder;
f70f7c6d 1071extern AVCodec cyuv_decoder;
de6d9b64 1072
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1073/* pcm codecs */
1074#define PCM_CODEC(id, name) \
1075extern AVCodec name ## _decoder; \
f11d3f23 1076extern AVCodec name ## _encoder
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1077
1078PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1079PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1080PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1081PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1082PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1083PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1084PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1085PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1086
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1087/* adpcm codecs */
1088
1089PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1090PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1091PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1092
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1093#undef PCM_CODEC
1094
1095/* dummy raw video codec */
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1096extern AVCodec rawvideo_codec;
1097
1098/* the following codecs use external GPL libs */
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1099extern AVCodec ac3_decoder;
1100
1101/* resample.c */
1102
1103struct ReSampleContext;
1104
1105typedef struct ReSampleContext ReSampleContext;
1106
1107ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1108 int output_rate, int input_rate);
1109int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1110void audio_resample_close(ReSampleContext *s);
1111
1112/* YUV420 format is assumed ! */
1113
1114struct ImgReSampleContext;
1115
1116typedef struct ImgReSampleContext ImgReSampleContext;
1117
1118ImgReSampleContext *img_resample_init(int output_width, int output_height,
1119 int input_width, int input_height);
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1120
1121ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1122 int iwidth, int iheight,
1123 int topBand, int bottomBand,
1124 int leftBand, int rightBand);
1125
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1126void img_resample(ImgReSampleContext *s,
1127 AVPicture *output, AVPicture *input);
1128
1129void img_resample_close(ImgReSampleContext *s);
1130
0c1a9eda 1131int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2d1a4094 1132 int pix_fmt, int width, int height);
219b06c6 1133int avpicture_get_size(int pix_fmt, int width, int height);
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1134void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1135const char *avcodec_get_pix_fmt_name(int pix_fmt);
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1136
1137/* convert among pixel formats */
1138int img_convert(AVPicture *dst, int dst_pix_fmt,
1139 AVPicture *src, int pix_fmt,
1140 int width, int height);
1141
1142/* deinterlace a picture */
1143int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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1144 int pix_fmt, int width, int height);
1145
1146/* external high level API */
1147
1148extern AVCodec *first_avcodec;
1149
156e5023 1150/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 1151unsigned avcodec_version(void);
8bceb6af 1152/* returns LIBAVCODEC_BUILD constant */
51a49663 1153unsigned avcodec_build(void);
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1154void avcodec_init(void);
1155
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1156void avcodec_set_bit_exact(void);
1157
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1158void register_avcodec(AVCodec *format);
1159AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 1160AVCodec *avcodec_find_encoder_by_name(const char *name);
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1161AVCodec *avcodec_find_decoder(enum CodecID id);
1162AVCodec *avcodec_find_decoder_by_name(const char *name);
1163void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1164
1e491e29 1165void avcodec_get_context_defaults(AVCodecContext *s);
7ffbb60e 1166AVCodecContext *avcodec_alloc_context(void);
492cd3a9 1167AVFrame *avcodec_alloc_frame(void);
1e491e29 1168
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1169int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1170void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1e491e29 1171
de6d9b64 1172int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
0c1a9eda 1173int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 1174 int *frame_size_ptr,
0c1a9eda 1175 uint8_t *buf, int buf_size);
492cd3a9 1176int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 1177 int *got_picture_ptr,
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1178 uint8_t *buf, int buf_size);
1179int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
917e06c8 1180 int *data_size_ptr,
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1181 uint8_t *buf, int buf_size);
1182int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64 1183 const short *samples);
0c1a9eda 1184int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 1185 const AVFrame *pict);
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1186
1187int avcodec_close(AVCodecContext *avctx);
1188
1189void avcodec_register_all(void);
a96b68b7 1190
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1191void avcodec_flush_buffers(AVCodecContext *avctx);
1192
628d601b 1193
628d601b 1194
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1195/**
1196 * Interface for 0.5.0 version
1197 *
1198 * do not even think about it's usage for this moment
1199 */
1200
1201typedef struct {
1202 // compressed size used from given memory buffer
1203 int size;
1204 /// I/P/B frame type
1205 int frame_type;
1206} avc_enc_result_t;
1207
1208/**
1209 * Commands
1210 * order can't be changed - once it was defined
1211 */
1212typedef enum {
1213 // general commands
1214 AVC_OPEN_BY_NAME = 0xACA000,
1215 AVC_OPEN_BY_CODEC_ID,
1216 AVC_OPEN_BY_FOURCC,
1217 AVC_CLOSE,
1218
1219 AVC_FLUSH,
1220 // pin - struct { uint8_t* src, uint_t src_size }
1221 // pout - struct { AVPicture* img, consumed_bytes,
1222 AVC_DECODE,
1223 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1224 // pout - uint_t used_from_dest_size
1225 AVC_ENCODE,
1226
1227 // query/get video commands
1228 AVC_GET_VERSION = 0xACB000,
1229 AVC_GET_WIDTH,
1230 AVC_GET_HEIGHT,
1231 AVC_GET_DELAY,
1232 AVC_GET_QUANT_TABLE,
1233 // ...
1234
1235 // query/get audio commands
1236 AVC_GET_FRAME_SIZE = 0xABC000,
1237
1238 // maybe define some simple structure which
1239 // might be passed to the user - but they can't
1240 // contain any codec specific parts and these
1241 // calls are usualy necessary only few times
1242
1243 // set video commands
1244 AVC_SET_WIDTH = 0xACD000,
1245 AVC_SET_HEIGHT,
1246
1247 // set video encoding commands
1248 AVC_SET_FRAME_RATE = 0xACD800,
1249 AVC_SET_QUALITY,
1250 AVC_SET_HURRY_UP,
1251
1252 // set audio commands
1253 AVC_SET_SAMPLE_RATE = 0xACE000,
1254 AVC_SET_CHANNELS,
1255
1256} avc_cmd_t;
1257
1258/**
1259 * \param handle allocated private structure by libavcodec
1260 * for initialization pass NULL - will be returned pout
1261 * user is supposed to know nothing about its structure
1262 * \param cmd type of operation to be performed
1263 * \param pint input parameter
1264 * \param pout output parameter
1265 *
1266 * \returns command status - eventually for query command it might return
1267 * integer resulting value
1268 */
1269int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1270
544eb99c 1271/* memory */
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1272void *av_malloc(unsigned int size);
1273void *av_mallocz(unsigned int size);
8e1e6f31 1274void *av_realloc(void *ptr, unsigned int size);
544eb99c 1275void av_free(void *ptr);
8e1e6f31 1276char *av_strdup(const char *s);
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FB
1277void __av_freep(void **ptr);
1278#define av_freep(p) __av_freep((void **)(p))
97d96aaa 1279void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
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1280/* for static data only */
1281/* call av_free_static to release all staticaly allocated tables */
628d601b 1282void av_free_static(void);
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1283void *__av_mallocz_static(void** location, unsigned int size);
1284#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
544eb99c 1285
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1286#ifdef __cplusplus
1287}
1288#endif
1289
a96b68b7 1290#endif /* AVCODEC_H */