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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
d33c949c 6 * external api header.
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7 */
8
9
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10#ifdef __cplusplus
11extern "C" {
12#endif
13
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14#include "common.h"
15
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16#define LIBAVCODEC_VERSION_INT 0x000406
17#define LIBAVCODEC_VERSION "0.4.6"
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18#define LIBAVCODEC_BUILD 4660
19#define LIBAVCODEC_BUILD_STR "4660"
4b1f4f23 20
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21enum CodecID {
22 CODEC_ID_NONE,
23 CODEC_ID_MPEG1VIDEO,
24 CODEC_ID_H263,
25 CODEC_ID_RV10,
26 CODEC_ID_MP2,
9d36bdc9 27 CODEC_ID_MP3LAME,
81e0d0b4 28 CODEC_ID_VORBIS,
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29 CODEC_ID_AC3,
30 CODEC_ID_MJPEG,
b135d9fb 31 CODEC_ID_MJPEGB,
bf89e6b1 32 CODEC_ID_MPEG4,
de6d9b64 33 CODEC_ID_RAWVIDEO,
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34 CODEC_ID_MSMPEG4V1,
35 CODEC_ID_MSMPEG4V2,
36 CODEC_ID_MSMPEG4V3,
e1a9dbff 37 CODEC_ID_WMV1,
b50eef3a 38 CODEC_ID_WMV2,
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39 CODEC_ID_H263P,
40 CODEC_ID_H263I,
be8ffec9 41 CODEC_ID_SVQ1,
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42 CODEC_ID_DVVIDEO,
43 CODEC_ID_DVAUDIO,
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44 CODEC_ID_WMAV1,
45 CODEC_ID_WMAV2,
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46 CODEC_ID_MACE3,
47 CODEC_ID_MACE6,
11f18faf 48 CODEC_ID_HUFFYUV,
f70f7c6d 49 CODEC_ID_CYUV,
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50
51 /* various pcm "codecs" */
52 CODEC_ID_PCM_S16LE,
53 CODEC_ID_PCM_S16BE,
54 CODEC_ID_PCM_U16LE,
55 CODEC_ID_PCM_U16BE,
56 CODEC_ID_PCM_S8,
57 CODEC_ID_PCM_U8,
58 CODEC_ID_PCM_MULAW,
59 CODEC_ID_PCM_ALAW,
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60
61 /* various adpcm codecs */
62 CODEC_ID_ADPCM_IMA_QT,
63 CODEC_ID_ADPCM_IMA_WAV,
64 CODEC_ID_ADPCM_MS,
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65};
66
67enum CodecType {
4a663d80 68 CODEC_TYPE_UNKNOWN = -1,
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69 CODEC_TYPE_VIDEO,
70 CODEC_TYPE_AUDIO,
71};
72
73enum PixelFormat {
74 PIX_FMT_YUV420P,
75 PIX_FMT_YUV422,
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76 PIX_FMT_RGB24, /* 3 bytes, R is first */
77 PIX_FMT_BGR24, /* 3 bytes, B is first */
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78 PIX_FMT_YUV422P,
79 PIX_FMT_YUV444P,
dab64ebc 80 PIX_FMT_RGBA32, /* always stored in cpu endianness */
e9feea59 81 PIX_FMT_YUV410P,
a32072d0 82 PIX_FMT_YUV411P,
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83 PIX_FMT_RGB565, /* always stored in cpu endianness */
84 PIX_FMT_RGB555, /* always stored in cpu endianness, most significant bit to 1 */
85 PIX_FMT_GRAY8,
86 PIX_FMT_MONOWHITE, /* 0 is white */
87 PIX_FMT_MONOBLACK, /* 0 is black */
7e6d70d0 88 PIX_FMT_PAL8, /* 8 bit with RGBA palette */
dab64ebc 89 PIX_FMT_NB,
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90};
91
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92/* currently unused, may be used if 24/32 bits samples ever supported */
93enum SampleFormat {
94 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
95};
96
de6d9b64 97/* in bytes */
bc8d1857 98#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 99
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100/**
101 * Required number of zero bytes at the end of the input bitstream for decoding.
102 * to avoid overreading (and possibly segfaulting)
103 */
104#define FF_INPUT_BUFFER_PADDING_SIZE 8
105
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106/* motion estimation type, EPZS by default */
107enum Motion_Est_ID {
101bea5f 108 ME_ZERO = 1,
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109 ME_FULL,
110 ME_LOG,
111 ME_PHODS,
112 ME_EPZS,
113 ME_X1
114};
115
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116typedef struct RcOverride{
117 int start_frame;
118 int end_frame;
119 int qscale; // if this is 0 then quality_factor will be used instead
120 float quality_factor;
121} RcOverride;
122
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123/* only for ME compatiblity with old apps */
124extern int motion_estimation_method;
125
e4986da9 126/* ME algos sorted by quality */
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127static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
128 ME_X1, ME_EPZS, ME_FULL };
de6d9b64 129
28db7fce 130
4e00e76b 131#define FF_MAX_B_FRAMES 8
9dbcbd92 132
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133/* encoding support
134 these flags can be passed in AVCodecContext.flags before initing
135 Note: note not everything is supported yet
136*/
de6d9b64 137
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138#define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
139#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
140#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
141#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
142#define CODEC_FLAG_GMC 0x0020 /* use GMC */
b71901e6 143#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
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144/* parent program gurantees that the input for b-frame containing streams is not written to
145 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 146#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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147#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
148#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
e84c31dc 149#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
b71901e6 150#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
93a21abd 151#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
140cb663 152#define CODEC_FLAG_PSNR 0x8000 /* error[?] variables will be set during encoding */
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153#define CODEC_FLAG_TRUNCATED 0x00010000 /* input bitstream might be truncated at a random location instead
154 of only at frame boundaries */
c5d309f2 155#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
fcb48651 156#define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
9f9c3229 157#define CODEC_FLAG_LOW_DELAY 0x00080000 /* force low delay / will fail on b frames */
5d3cea3a 158#define CODEC_FLAG_ALT_SCAN 0x00100000 /* use alternate scan */
477ab036 159#define CODEC_FLAG_TRELLIS_QUANT 0x00200000 /* use trellis quantization */
70ac76c0 160#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 /* place global headers in extradata instead of every keyframe */
b0368839 161#define CODEC_FLAG_BITEXACT 0x00800000 /* use only bitexact stuff (except (i)dct) */
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162/* Fx : Flag for h263+ extra options */
163#define CODEC_FLAG_H263P_AIC 0x01000000 /* Advanced intra coding */
164#define CODEC_FLAG_H263P_UMV 0x02000000 /* Unlimited motion vector */
165/* For advanced prediction mode, we reuse the 4MV flag */
166/* Unsupported options :
167 * Syntax Arithmetic coding (SAC)
168 * Deblocking filter internal loop
169 * Slice structured
170 * Reference Picture Selection
171 * Independant Segment Decoding
172 * Alternative Inter * VLC
173 * Modified Quantization */
174/* /Fx */
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175/* codec capabilities */
176
b71901e6 177#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
93a21abd 178#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
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179/* if 'parse_only' field is true, then avcodec_parse_frame() can be
180 used */
181#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 182#define CODEC_CAP_TRUNCATED 0x0008
bf89e6b1 183
a5dbb247 184#define FRAME_RATE_BASE 10010
de6d9b64 185
492cd3a9 186#define FF_COMMON_FRAME \
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187 uint8_t *data[4];\
188 int linesize[4];\
189 /**\
32db2b1d 190 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
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191 * this isnt used by lavc unless the default get/release_buffer() is used\
192 * encoding: \
193 * decoding: \
194 */\
195 uint8_t *base[4];\
196 /**\
197 * 1 -> keyframe, 0-> not\
198 * encoding: set by lavc\
199 * decoding: set by lavc\
200 */\
201 int key_frame;\
202\
203 /**\
204 * picture type of the frame, see ?_TYPE below\
205 * encoding: set by lavc for coded_picture (and set by user for input)\
206 * decoding: set by lavc\
207 */\
208 int pict_type;\
209\
210 /**\
211 * presentation timestamp in micro seconds (time when frame should be shown to user)\
212 * if 0 then the frame_rate will be used as reference\
213 * encoding: MUST be set by user\
214 * decoding: set by lavc\
215 */\
216 long long int pts;\
217\
218 /**\
219 * picture number in bitstream order.\
220 * encoding: set by\
221 * decoding: set by lavc\
222 */\
223 int coded_picture_number;\
224 /**\
225 * encoding: set by\
226 * decoding: set by lavc\
227 * picture number in display order.\
228 */\
229 int display_picture_number;\
230\
231 /**\
232 * quality (between 1 (good) and 31 (bad)) \
233 * encoding: set by lavc for coded_picture (and set by user for input)\
234 * decoding: set by lavc\
235 */\
236 float quality; \
237\
238 /**\
239 * buffer age (1->was last buffer and dint change, 2->..., ...).\
240 * set to something large if the buffer has not been used yet \
241 * encoding: unused\
242 * decoding: MUST be set by get_buffer()\
243 */\
244 int age;\
245\
246 /**\
247 * is this picture used as reference\
248 * encoding: unused\
249 * decoding: set by lavc (before get_buffer() call))\
250 */\
251 int reference;\
252\
253 /**\
254 * QP table\
255 * encoding: unused\
256 * decoding: set by lavc\
257 */\
258 int8_t *qscale_table;\
259 /**\
260 * QP store stride\
261 * encoding: unused\
262 * decoding: set by lavc\
263 */\
264 int qstride;\
265\
266 /**\
267 * mbskip_table[mb]>=1 if MB didnt change\
268 * stride= mb_width = (width+15)>>4\
269 * encoding: unused\
270 * decoding: set by lavc\
271 */\
272 uint8_t *mbskip_table;\
273\
274 /**\
275 * for some private data of the user\
276 * encoding: unused\
277 * decoding: set by user\
278 */\
279 void *opaque;\
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280\
281 /**\
282 * error\
283 * encoding: set by lavc if flags&CODEC_FLAG_PSNR\
284 * decoding: unused\
285 */\
286 uint64_t error[4];\
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287\
288 /**\
289 * type of the buffer (to keep track of who has to dealloc data[*])\
290 * encoding: set by the one who allocs it\
291 * decoding: set by the one who allocs it\
292 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
293 */\
294 int type;\
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295 \
296 /**\
297 * when decoding, this signal how much the picture must be delayed.\
298 * extra_delay = repeat_pict / (2*fps)\
299 * encoding: unused\
300 * decoding: set by lavc\
301 */\
302 int repeat_pict;
303
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304
305#define FF_BUFFER_TYPE_INTERNAL 1
306#define FF_BUFFER_TYPE_USER 2 // Direct rendering buffers
307#define FF_BUFFER_TYPE_SHARED 4 // input frame for encoding(wont be dealloced)
308
1e491e29 309
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310#define FF_I_TYPE 1 // Intra
311#define FF_P_TYPE 2 // Predicted
312#define FF_B_TYPE 3 // Bi-dir predicted
313#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
1e491e29 314
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315typedef struct AVFrame {
316 FF_COMMON_FRAME
317} AVFrame;
1e491e29 318
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319
320/**
321 * main external api structure.
322 */
de6d9b64 323typedef struct AVCodecContext {
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324 /**
325 * the average bitrate
326 * encoding: set by user. unused for constant quantizer encoding
327 * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
328 */
de6d9b64 329 int bit_rate;
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330
331 /**
332 * number of bits the bitstream is allowed to diverge from the reference
333 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
334 * encoding: set by user. unused for constant quantizer encoding
335 * decoding: unused
336 */
337 int bit_rate_tolerance;
338
339 /**
340 * CODEC_FLAG_*
341 * encoding: set by user.
342 * decoding: set by user.
343 */
de6d9b64 344 int flags;
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345
346 /**
347 * some codecs needs additionnal format info. It is stored here
348 * encoding: set by user.
349 * decoding: set by lavc. (FIXME is this ok?)
350 */
351 int sub_id;
352
353 /**
354 * motion estimation algorithm used for video coding
1e491e29 355 * encoding: MUST be set by user.
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356 * decoding: unused
357 */
358 int me_method;
359
360 /**
361 * some codecs need / can use extra-data like huffman tables
362 * mjpeg: huffman tables
363 * rv10: additional flags
b704e742 364 * mpeg4: global headers (they can be in the bitstream or here)
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365 * encoding: set/allocated/freed by lavc.
366 * decoding: set/allocated/freed by user.
b71901e6 367 */
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368 void *extradata;
369 int extradata_size;
370
de6d9b64 371 /* video only */
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372 /**
373 * frames per sec multiplied by FRAME_RATE_BASE
374 * for variable fps this is the precission, so if the timestamps
375 * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
1e491e29 376 * encoding: MUST be set by user
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377 * decoding: set by lavc. 0 or the frame_rate if available
378 */
379 int frame_rate;
380
381 /**
1e491e29 382 * encoding: MUST be set by user.
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383 * decoding: set by user, some codecs might override / change it during playback
384 */
de6d9b64 385 int width, height;
b71901e6 386
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387#define FF_ASPECT_SQUARE 1
388#define FF_ASPECT_4_3_625 2
389#define FF_ASPECT_4_3_525 3
390#define FF_ASPECT_16_9_625 4
391#define FF_ASPECT_16_9_525 5
e769f053 392#define FF_ASPECT_EXTENDED 15
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393
394 /**
395 * the number of pictures in a group of pitures, or 0 for intra_only
396 * encoding: set by user.
397 * decoding: unused
398 */
399 int gop_size;
400
401 /**
402 * pixel format, see PIX_FMT_xxx
403 * encoding: unused
404 * decoding: set by lavc.
405 */
406 enum PixelFormat pix_fmt;
2ec23b6d 407
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408 /**
409 * if non NULL, 'draw_horiz_band' is called by the libavcodec
410 * decoder to draw an horizontal band. It improve cache usage. Not
411 * all codecs can do that. You must check the codec capabilities
412 * before
413 * encoding: unused
414 * decoding: set by user.
415 */
bf89e6b1 416 void (*draw_horiz_band)(struct AVCodecContext *s,
0c1a9eda 417 uint8_t **src_ptr, int linesize,
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418 int y, int width, int height);
419
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420 /* audio only */
421 int sample_rate; /* samples per sec */
422 int channels;
a96b68b7 423 int sample_fmt; /* sample format, currenly unused */
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424
425 /* the following data should not be initialized */
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426 int frame_size; /* in samples, initialized when calling 'init' */
427 int frame_number; /* audio or video frame number */
428 int real_pict_num; /* returns the real picture number of
429 previous encoded frame */
1e491e29 430
b71901e6 431 /**
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432 * number of frames the decoded output will be delayed relative to
433 * the encoded input
434 * encoding: set by lavc.
435 * decoding: unused
436 */
437 int delay;
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438
439 /* encoding parameters */
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440 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
441 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
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442
443 /**
444 * minimum quantizer
445 * encoding: set by user.
446 * decoding: unused
447 */
448 int qmin;
449
450 /**
451 * maximum quantizer
452 * encoding: set by user.
453 * decoding: unused
454 */
455 int qmax;
456
457 /**
458 * maximum quantizer difference etween frames
459 * encoding: set by user.
460 * decoding: unused
461 */
462 int max_qdiff;
463
464 /**
465 * maximum number of b frames between non b frames
466 * note: the output will be delayed by max_b_frames+1 relative to the input
467 * encoding: set by user.
468 * decoding: unused
469 */
470 int max_b_frames;
471
472 /**
473 * qscale factor between ip and b frames
474 * encoding: set by user.
475 * decoding: unused
476 */
477 float b_quant_factor;
478
479 /** obsolete FIXME remove */
480 int rc_strategy;
8b4c7dbc 481 int b_frame_strategy;
9dbcbd92 482
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483 /**
484 * encoding: unused
347ae22e 485 * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
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486 */
487 int hurry_up;
2417652e 488
de6d9b64 489 struct AVCodec *codec;
b71901e6 490
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491 void *priv_data;
492
644d98a4 493 /* The following data is for RTP friendly coding */
1f6b6e50 494 /* By now only H.263/H.263+/MPEG4 coder honours this */
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495 int rtp_mode; /* 1 for activate RTP friendly-mode */
496 /* highers numbers represent more error-prone */
497 /* enviroments, by now just "1" exist */
498
499 int rtp_payload_size; /* The size of the RTP payload, the coder will */
500 /* do it's best to deliver a chunk with size */
501 /* below rtp_payload_size, the chunk will start */
502 /* with a start code on some codecs like H.263 */
503 /* This doesn't take account of any particular */
504 /* headers inside the transmited RTP payload */
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505
506
507 /* The RTP callcack: This function is called */
508 /* every time the encoder as a packet to send */
509 /* Depends on the encoder if the data starts */
510 /* with a Start Code (it should) H.263 does */
511 void (*rtp_callback)(void *data, int size, int packet_number);
512
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513 /* statistics, used for 2-pass encoding */
514 int mv_bits;
515 int header_bits;
516 int i_tex_bits;
517 int p_tex_bits;
518 int i_count;
519 int p_count;
520 int skip_count;
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521 int misc_bits;
522
523 /**
524 * number of bits used for the previously encoded frame
525 * encoding: set by lavc
8350df97 526 * decoding: - for audio - bits_per_sample
b71901e6 527 */
098eefe1 528 int frame_bits;
644d98a4 529
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530 /**
531 * private data of the user, can be used to carry app specific stuff
532 * encoding: set by user
533 * decoding: set by user
534 */
535 void *opaque;
536
de6d9b64 537 char codec_name[32];
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538 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
539 enum CodecID codec_id; /* see CODEC_ID_xxx */
de6d9b64 540 unsigned int codec_tag; /* codec tag, only used if unknown codec */
92ba5ffb 541
b71901e6 542 /**
4d2858de 543 * workaround bugs in encoders which sometimes cannot be detected automatically
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544 * encoding: unused
545 * decoding: set by user
546 */
547 int workaround_bugs;
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548#define FF_BUG_AUTODETECT 1 //autodetection
549#define FF_BUG_OLD_MSMPEG4 2
550#define FF_BUG_XVID_ILACE 4
551#define FF_BUG_UMP4 8
552#define FF_BUG_NO_PADDING 16
553#define FF_BUG_AC_VLC 32
03e93d35 554#define FF_BUG_QPEL_CHROMA 64
db794953 555#define FF_BUG_STD_QPEL 128
36df8805 556#define FF_BUG_QPEL_CHROMA2 256
c40c3482 557#define FF_BUG_DIRECT_BLOCKSIZE 512
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558//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
559
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560 /**
561 * encoding: set by user
562 * decoding: unused
563 */
1f6b6e50 564 int luma_elim_threshold;
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565
566 /**
567 * encoding: set by user
568 * decoding: unused
569 */
1f6b6e50 570 int chroma_elim_threshold;
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571
572 /**
573 * strictly follow the std (MPEG4, ...)
574 * encoding: set by user
575 * decoding: unused
576 */
577 int strict_std_compliance;
578
579 /**
580 * qscale offset between ip and b frames
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581 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
582 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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583 * encoding: set by user.
584 * decoding: unused
585 */
586 float b_quant_offset;
587
588 /**
ce3bcaed 589 * error resilience higher values will detect more errors but may missdetect
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590 * some more or less valid parts as errors
591 * encoding: unused
592 * decoding: set by user
593 */
1f6b6e50 594 int error_resilience;
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595#define FF_ER_CAREFULL 1
596#define FF_ER_COMPLIANT 2
597#define FF_ER_AGGRESSIVE 3
598#define FF_ER_VERY_AGGRESSIVE 4
ae72cda6 599
6b72ac63 600 /**
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601 * called at the beginning of each frame to get a buffer for it.
602 * if pic.reference is set then the frame will be read later by lavc
b71901e6 603 * encoding: unused
1e491e29 604 * decoding: set by lavc, user can override
b71901e6 605 */
492cd3a9 606 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
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607
608 /**
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609 * called to release buffers which where allocated with get_buffer.
610 * a released buffer can be reused in get_buffer()
611 * pic.data[*] must be set to NULL
b71901e6 612 * encoding: unused
1e491e29 613 * decoding: set by lavc, user can override
b71901e6 614 */
492cd3a9 615 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
0fd90455 616
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617 /**
618 * is 1 if the decoded stream contains b frames, 0 otherwise
619 * encoding: unused
620 * decoding: set by lavc
621 */
622 int has_b_frames;
b71901e6 623
bc8d1857 624 int block_align; /* used by some WAV based audio codecs */
ce980a95 625
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626 int parse_only; /* decoding only: if true, only parsing is done
627 (function avcodec_parse_frame()). The frame
628 data is returned. Only MPEG codecs support this now. */
ce980a95 629
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630 /**
631 * 0-> h263 quant 1-> mpeg quant
632 * encoding: set by user.
633 * decoding: unused
634 */
635 int mpeg_quant;
ce980a95 636
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637 /**
638 * pass1 encoding statistics output buffer
639 * encoding: set by lavc
640 * decoding: unused
641 */
ce980a95 642 char *stats_out; /* encoding statistics output buffer */
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643
644 /**
645 * pass2 encoding statistics input buffer.
646 * concatenated stuff from stats_out of pass1 should be placed here
647 * encoding: allocated/set/freed by user
648 * decoding: unused
649 */
650 char *stats_in;
651
652 /**
653 * ratecontrol qmin qmax limiting method
654 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
655 * encoding: set by user.
656 * decoding: unused
657 */
ce980a95 658 float rc_qsquish;
b71901e6 659
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660 float rc_qmod_amp;
661 int rc_qmod_freq;
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662
663 /**
664 * ratecontrol override, see RcOverride
665 * encoding: allocated/set/freed by user.
666 * decoding: unused
667 */
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668 RcOverride *rc_override;
669 int rc_override_count;
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670
671 /**
672 * rate control equation
673 * encoding: set by user
674 * decoding: unused
675 */
ce980a95 676 char *rc_eq;
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677
678 /**
679 * maximum bitrate
680 * encoding: set by user.
681 * decoding: unused
682 */
ce980a95 683 int rc_max_rate;
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684
685 /**
686 * minimum bitrate
687 * encoding: set by user.
688 * decoding: unused
689 */
ce980a95 690 int rc_min_rate;
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691
692 /**
693 * decoder bitstream buffer size
694 * encoding: set by user.
695 * decoding: unused
696 */
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697 int rc_buffer_size;
698 float rc_buffer_aggressivity;
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699
700 /**
701 * qscale factor between p and i frames
702 * encoding: set by user.
703 * decoding: unused
704 */
705 float i_quant_factor;
706
707 /**
708 * qscale offset between p and i frames
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709 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
710 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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711 * encoding: set by user.
712 * decoding: unused
713 */
714 float i_quant_offset;
715
716 /**
717 * initial complexity for pass1 ratecontrol
718 * encoding: set by user.
719 * decoding: unused
720 */
ce980a95 721 float rc_initial_cplx;
917e06c8 722
b71901e6 723 /**
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724 * dct algorithm, see FF_DCT_* below
725 * encoding: set by user
726 * decoding: unused
727 */
28db7fce 728 int dct_algo;
c7e07931 729#define FF_DCT_AUTO 0
28db7fce 730#define FF_DCT_FASTINT 1
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731#define FF_DCT_INT 2
732#define FF_DCT_MMX 3
733#define FF_DCT_MLIB 4
05c4072b 734#define FF_DCT_ALTIVEC 5
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735
736 /**
737 * luminance masking (0-> disabled)
738 * encoding: set by user
739 * decoding: unused
740 */
741 float lumi_masking;
742
743 /**
744 * temporary complexity masking (0-> disabled)
745 * encoding: set by user
746 * decoding: unused
747 */
748 float temporal_cplx_masking;
749
750 /**
751 * spatial complexity masking (0-> disabled)
752 * encoding: set by user
753 * decoding: unused
754 */
755 float spatial_cplx_masking;
756
757 /**
758 * p block masking (0-> disabled)
759 * encoding: set by user
760 * decoding: unused
761 */
762 float p_masking;
15415af4 763
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764 /**
765 * darkness masking (0-> disabled)
766 * encoding: set by user
767 * decoding: unused
768 */
769 float dark_masking;
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770
771 /**
772 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
773 * this is used to workaround some encoder bugs
774 * encoding: unused
202ef8b8 775 * decoding: set by user, will be converted to upper case by lavc during init
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776 */
777 int fourcc;
5e746b99 778
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779 /**
780 * idct algorithm, see FF_IDCT_* below
781 * encoding: set by user
782 * decoding: set by user
783 */
784 int idct_algo;
785#define FF_IDCT_AUTO 0
786#define FF_IDCT_INT 1
787#define FF_IDCT_SIMPLE 2
788#define FF_IDCT_SIMPLEMMX 3
789#define FF_IDCT_LIBMPEG2MMX 4
790#define FF_IDCT_PS2 5
791#define FF_IDCT_MLIB 6
792#define FF_IDCT_ARM 7
05c4072b 793#define FF_IDCT_ALTIVEC 8
2ad1516a 794
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795 /**
796 * slice count
797 * encoding: set by lavc
798 * decoding: set by user (or 0)
799 */
800 int slice_count;
801 /**
802 * slice offsets in the frame in bytes
803 * encoding: set/allocated by lavc
804 * decoding: set/allocated by user (or NULL)
805 */
806 int *slice_offset;
807
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808 /**
809 * error concealment flags
810 * encoding: unused
811 * decoding: set by user
812 */
813 int error_concealment;
814#define FF_EC_GUESS_MVS 1
815#define FF_EC_DEBLOCK 2
816
6b72ac63 817 /**
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818 * dsp_mask could be used to disable unwanted
819 * CPU features (i.e. MMX, SSE. ...)
820 */
821 unsigned dsp_mask;
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822
823 /**
824 * bits per sample/pixel from the demuxer (needed for huffyuv)
1e491e29 825 * encoding: set by lavc
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826 * decoding: set by user
827 */
828 int bits_per_sample;
829
830 /**
831 * prediction method (needed for huffyuv)
1e491e29 832 * encoding: set by user
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833 * decoding: unused
834 */
835 int prediction_method;
836#define FF_PRED_LEFT 0
837#define FF_PRED_PLANE 1
838#define FF_PRED_MEDIAN 2
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839
840 /**
841 * aspect ratio. (0 if unknown)
842 * encoding: set by user.
843 * decoding: set by lavc.
844 */
845 float aspect_ratio;
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846
847 /**
848 * the picture in the bitstream
849 * encoding: set by lavc
850 * decoding: set by lavc
851 */
492cd3a9 852 AVFrame *coded_frame;
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853
854 /**
855 * debug
856 * encoding: set by user.
857 * decoding: set by user.
858 */
859 int debug;
860#define FF_DEBUG_PICT_INFO 1
861#define FF_DEBUG_RC 2
862#define FF_DEBUG_BITSTREAM 4
863#define FF_DEBUG_MB_TYPE 8
864#define FF_DEBUG_QP 16
865#define FF_DEBUG_MV 32
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866#define FF_DEBUG_VIS_MV 0x00000040
867#define FF_DEBUG_SKIP 0x00000080
868#define FF_DEBUG_STARTCODE 0x00000100
869#define FF_DEBUG_PTS 0x00000200
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870
871 /**
872 * error
873 * encoding: set by lavc if flags&CODEC_FLAG_PSNR
874 * decoding: unused
875 */
876 uint64_t error[4];
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877
878 /**
879 * minimum MB quantizer
880 * encoding: set by user.
881 * decoding: unused
882 */
883 int mb_qmin;
884
885 /**
886 * maximum MB quantizer
887 * encoding: set by user.
888 * decoding: unused
889 */
890 int mb_qmax;
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891
892 /**
893 * motion estimation compare function
894 * encoding: set by user.
895 * decoding: unused
896 */
897 int me_cmp;
898 /**
899 * subpixel motion estimation compare function
900 * encoding: set by user.
901 * decoding: unused
902 */
903 int me_sub_cmp;
904 /**
905 * macroblock compare function (not supported yet)
906 * encoding: set by user.
907 * decoding: unused
908 */
909 int mb_cmp;
910#define FF_CMP_SAD 0
911#define FF_CMP_SSE 1
912#define FF_CMP_SATD 2
913#define FF_CMP_DCT 3
914#define FF_CMP_PSNR 4
915#define FF_CMP_BIT 5
916#define FF_CMP_RD 6
917#define FF_CMP_ZERO 7
918#define FF_CMP_CHROMA 256
919
920 /**
b07a5980 921 * ME diamond size & shape
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922 * encoding: set by user.
923 * decoding: unused
924 */
925 int dia_size;
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926
927 /**
928 * amount of previous MV predictors (2a+1 x 2a+1 square)
929 * encoding: set by user.
930 * decoding: unused
931 */
932 int last_predictor_count;
70ac76c0 933
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934 /**
935 * pre pass for motion estimation
936 * encoding: set by user.
937 * decoding: unused
938 */
939 int pre_me;
b07a5980 940
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941 /**
942 * motion estimation pre pass compare function
943 * encoding: set by user.
944 * decoding: unused
945 */
946 int me_pre_cmp;
826f429a 947
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948 /**
949 * ME pre pass diamond size & shape
950 * encoding: set by user.
951 * decoding: unused
952 */
953 int pre_dia_size;
954
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955 /**
956 * subpel ME quality
957 * encoding: set by user.
958 * decoding: unused
959 */
960 int me_subpel_quality;
961
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962 /**
963 * callback to negotiate the pixelFormat
964 * @param fmt is the list of formats which are supported by the codec,
965 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
966 * the first is allways the native one
967 * @return the choosen format
968 * encoding: unused
969 * decoding: set by user, if not set then the native format will always be choosen
970 */
971 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
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972
973 /**
974 * DTG active format information (additionnal aspect ratio
975 * information only used in DVB MPEG2 transport streams). 0 if
976 * not set.
977 *
978 * encoding: unused.
979 * decoding: set by decoder
980 */
981 int dtg_active_format;
982#define FF_DTG_AFD_SAME 8
983#define FF_DTG_AFD_4_3 9
984#define FF_DTG_AFD_16_9 10
985#define FF_DTG_AFD_14_9 11
986#define FF_DTG_AFD_4_3_SP_14_9 13
987#define FF_DTG_AFD_16_9_SP_14_9 14
988#define FF_DTG_AFD_SP_4_3 15
989
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990 int me_range;
991 /**
992 * Maximum motion estimation search range in subpel units.
993 * if 0 then no limit
994 *
995 * encoding: set by user.
996 * decoding: unused.
997 */
998
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999} AVCodecContext;
1000
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1001//void avcodec_getopt(AVCodecContext* avctx, const char* str, avc_config_t** config);
1002
1003typedef struct AVOption {
1004 /** options' name */
1005 const char *name; /* if name is NULL, it indicates a link to next */
1006 /** short English text help */
1007 const char *help;
1008 /** offset to context structure where the parsed value should be stored */
1009 int offset;
1010 /** options' type */
1011 int type;
1012#define FF_OPT_TYPE_BOOL 1 // boolean - true,1,on (or simply presence)
1013#define FF_OPT_TYPE_DOUBLE 2 // double
1014#define FF_OPT_TYPE_INT 3 // integer
1015#define FF_OPT_TYPE_STRING 4 // string (finished with \0)
1016#define FF_OPT_TYPE_MASK 0x1f // mask for types - upper bits are various flags
1017//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1018#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1019#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1020 /** min value (min == max -> no limits) */
1021 double min;
1022 /** maximum value for double/int */
1023 double max;
1024 /** default boo [0,1]l/double/int value */
1025 double defval;
1026 /**
1027 * default string value (with optional semicolon delimited extra option-list
1028 * i.e. option1;option2;option3
1029 * defval might select other then first argument as default
1030 */
1031 const char *defstr;
1032 const struct AVOption *sub; /* used when name is NULL */
1033 /* when it's NULL return to previous level (or finish reading) */
1034#define FF_OPT_MAX_DEPTH 10
1035} AVOption;
1036
de6d9b64 1037typedef struct AVCodec {
18f77016 1038 const char *name;
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1039 int type;
1040 int id;
1041 int priv_data_size;
1042 int (*init)(AVCodecContext *);
0c1a9eda 1043 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
de6d9b64 1044 int (*close)(AVCodecContext *);
0fd90455 1045 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
0c1a9eda 1046 uint8_t *buf, int buf_size);
bf89e6b1 1047 int capabilities;
97d96aaa 1048 const AVOption *options;
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1049 struct AVCodec *next;
1050} AVCodec;
1051
97d96aaa 1052/**
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1053 * four components are given, that's all.
1054 * the last component is alpha
1055 */
de6d9b64 1056typedef struct AVPicture {
0c1a9eda 1057 uint8_t *data[4];
d7425f59 1058 int linesize[4];
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1059} AVPicture;
1060
1061extern AVCodec ac3_encoder;
1062extern AVCodec mp2_encoder;
9d36bdc9 1063extern AVCodec mp3lame_encoder;
81e0d0b4 1064extern AVCodec oggvorbis_encoder;
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1065extern AVCodec mpeg1video_encoder;
1066extern AVCodec h263_encoder;
1067extern AVCodec h263p_encoder;
1068extern AVCodec rv10_encoder;
1069extern AVCodec mjpeg_encoder;
bf89e6b1 1070extern AVCodec mpeg4_encoder;
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1071extern AVCodec msmpeg4v1_encoder;
1072extern AVCodec msmpeg4v2_encoder;
1073extern AVCodec msmpeg4v3_encoder;
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1074extern AVCodec wmv1_encoder;
1075extern AVCodec wmv2_encoder;
11f18faf 1076extern AVCodec huffyuv_encoder;
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1077
1078extern AVCodec h263_decoder;
bf89e6b1 1079extern AVCodec mpeg4_decoder;
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1080extern AVCodec msmpeg4v1_decoder;
1081extern AVCodec msmpeg4v2_decoder;
1082extern AVCodec msmpeg4v3_decoder;
e1a9dbff 1083extern AVCodec wmv1_decoder;
0151a6f5 1084extern AVCodec wmv2_decoder;
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1085extern AVCodec mpeg_decoder;
1086extern AVCodec h263i_decoder;
1087extern AVCodec rv10_decoder;
be8ffec9 1088extern AVCodec svq1_decoder;
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1089extern AVCodec dvvideo_decoder;
1090extern AVCodec dvaudio_decoder;
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1091extern AVCodec wmav1_decoder;
1092extern AVCodec wmav2_decoder;
4e66ab3b 1093extern AVCodec mjpeg_decoder;
b135d9fb 1094extern AVCodec mjpegb_decoder;
4b1f4f23 1095extern AVCodec mp2_decoder;
a96b68b7 1096extern AVCodec mp3_decoder;
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1097extern AVCodec mace3_decoder;
1098extern AVCodec mace6_decoder;
11f18faf 1099extern AVCodec huffyuv_decoder;
3aca208a 1100extern AVCodec oggvorbis_decoder;
f70f7c6d 1101extern AVCodec cyuv_decoder;
de6d9b64 1102
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1103/* pcm codecs */
1104#define PCM_CODEC(id, name) \
1105extern AVCodec name ## _decoder; \
f11d3f23 1106extern AVCodec name ## _encoder
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1107
1108PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1109PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1110PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1111PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1112PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1113PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1114PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1115PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1116
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1117/* adpcm codecs */
1118
1119PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1120PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1121PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1122
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1123#undef PCM_CODEC
1124
1125/* dummy raw video codec */
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1126extern AVCodec rawvideo_codec;
1127
1128/* the following codecs use external GPL libs */
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1129extern AVCodec ac3_decoder;
1130
1131/* resample.c */
1132
1133struct ReSampleContext;
1134
1135typedef struct ReSampleContext ReSampleContext;
1136
1137ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1138 int output_rate, int input_rate);
1139int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1140void audio_resample_close(ReSampleContext *s);
1141
1142/* YUV420 format is assumed ! */
1143
1144struct ImgReSampleContext;
1145
1146typedef struct ImgReSampleContext ImgReSampleContext;
1147
1148ImgReSampleContext *img_resample_init(int output_width, int output_height,
1149 int input_width, int input_height);
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1150
1151ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1152 int iwidth, int iheight,
1153 int topBand, int bottomBand,
1154 int leftBand, int rightBand);
1155
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1156void img_resample(ImgReSampleContext *s,
1157 AVPicture *output, AVPicture *input);
1158
1159void img_resample_close(ImgReSampleContext *s);
1160
0c1a9eda 1161int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2d1a4094 1162 int pix_fmt, int width, int height);
219b06c6 1163int avpicture_get_size(int pix_fmt, int width, int height);
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1164void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1165const char *avcodec_get_pix_fmt_name(int pix_fmt);
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1166
1167/* convert among pixel formats */
1168int img_convert(AVPicture *dst, int dst_pix_fmt,
1169 AVPicture *src, int pix_fmt,
1170 int width, int height);
1171
1172/* deinterlace a picture */
1173int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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1174 int pix_fmt, int width, int height);
1175
1176/* external high level API */
1177
1178extern AVCodec *first_avcodec;
1179
156e5023 1180/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 1181unsigned avcodec_version(void);
8bceb6af 1182/* returns LIBAVCODEC_BUILD constant */
51a49663 1183unsigned avcodec_build(void);
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1184void avcodec_init(void);
1185
1186void register_avcodec(AVCodec *format);
1187AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 1188AVCodec *avcodec_find_encoder_by_name(const char *name);
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1189AVCodec *avcodec_find_decoder(enum CodecID id);
1190AVCodec *avcodec_find_decoder_by_name(const char *name);
1191void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1192
1e491e29 1193void avcodec_get_context_defaults(AVCodecContext *s);
7ffbb60e 1194AVCodecContext *avcodec_alloc_context(void);
492cd3a9 1195AVFrame *avcodec_alloc_frame(void);
1e491e29 1196
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1197int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1198void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1e491e29 1199
de6d9b64 1200int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
0c1a9eda 1201int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 1202 int *frame_size_ptr,
0c1a9eda 1203 uint8_t *buf, int buf_size);
492cd3a9 1204int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 1205 int *got_picture_ptr,
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1206 uint8_t *buf, int buf_size);
1207int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
917e06c8 1208 int *data_size_ptr,
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1209 uint8_t *buf, int buf_size);
1210int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64 1211 const short *samples);
0c1a9eda 1212int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 1213 const AVFrame *pict);
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1214
1215int avcodec_close(AVCodecContext *avctx);
1216
1217void avcodec_register_all(void);
a96b68b7 1218
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1219void avcodec_flush_buffers(AVCodecContext *avctx);
1220
628d601b 1221
628d601b 1222
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1223/**
1224 * Interface for 0.5.0 version
1225 *
1226 * do not even think about it's usage for this moment
1227 */
1228
1229typedef struct {
1230 // compressed size used from given memory buffer
1231 int size;
1232 /// I/P/B frame type
1233 int frame_type;
1234} avc_enc_result_t;
1235
1236/**
1237 * Commands
1238 * order can't be changed - once it was defined
1239 */
1240typedef enum {
1241 // general commands
1242 AVC_OPEN_BY_NAME = 0xACA000,
1243 AVC_OPEN_BY_CODEC_ID,
1244 AVC_OPEN_BY_FOURCC,
1245 AVC_CLOSE,
1246
1247 AVC_FLUSH,
1248 // pin - struct { uint8_t* src, uint_t src_size }
1249 // pout - struct { AVPicture* img, consumed_bytes,
1250 AVC_DECODE,
1251 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1252 // pout - uint_t used_from_dest_size
1253 AVC_ENCODE,
1254
1255 // query/get video commands
1256 AVC_GET_VERSION = 0xACB000,
1257 AVC_GET_WIDTH,
1258 AVC_GET_HEIGHT,
1259 AVC_GET_DELAY,
1260 AVC_GET_QUANT_TABLE,
1261 // ...
1262
1263 // query/get audio commands
1264 AVC_GET_FRAME_SIZE = 0xABC000,
1265
1266 // maybe define some simple structure which
1267 // might be passed to the user - but they can't
1268 // contain any codec specific parts and these
1269 // calls are usualy necessary only few times
1270
1271 // set video commands
1272 AVC_SET_WIDTH = 0xACD000,
1273 AVC_SET_HEIGHT,
1274
1275 // set video encoding commands
1276 AVC_SET_FRAME_RATE = 0xACD800,
1277 AVC_SET_QUALITY,
1278 AVC_SET_HURRY_UP,
1279
1280 // set audio commands
1281 AVC_SET_SAMPLE_RATE = 0xACE000,
1282 AVC_SET_CHANNELS,
1283
1284} avc_cmd_t;
1285
1286/**
1287 * \param handle allocated private structure by libavcodec
1288 * for initialization pass NULL - will be returned pout
1289 * user is supposed to know nothing about its structure
1290 * \param cmd type of operation to be performed
1291 * \param pint input parameter
1292 * \param pout output parameter
1293 *
1294 * \returns command status - eventually for query command it might return
1295 * integer resulting value
1296 */
1297int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1298
544eb99c 1299/* memory */
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1300void *av_malloc(unsigned int size);
1301void *av_mallocz(unsigned int size);
8e1e6f31 1302void *av_realloc(void *ptr, unsigned int size);
544eb99c 1303void av_free(void *ptr);
8e1e6f31 1304char *av_strdup(const char *s);
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1305void __av_freep(void **ptr);
1306#define av_freep(p) __av_freep((void **)(p))
97d96aaa 1307void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
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1308/* for static data only */
1309/* call av_free_static to release all staticaly allocated tables */
628d601b 1310void av_free_static(void);
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1311void *__av_mallocz_static(void** location, unsigned int size);
1312#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
544eb99c 1313
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1314#ifdef __cplusplus
1315}
1316#endif
1317
a96b68b7 1318#endif /* AVCODEC_H */