*HUGE* set of compiler warning fixes, unused variables removal
[libav.git] / libavcodec / avcodec.h
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1#ifndef AVCODEC_H
2#define AVCODEC_H
3
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4#include "common.h"
5
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6#define LIBAVCODEC_VERSION_INT 0x000406
7#define LIBAVCODEC_VERSION "0.4.6"
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8#define LIBAVCODEC_BUILD 4634
9#define LIBAVCODEC_BUILD_STR "4634"
4b1f4f23 10
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11enum CodecID {
12 CODEC_ID_NONE,
13 CODEC_ID_MPEG1VIDEO,
14 CODEC_ID_H263,
15 CODEC_ID_RV10,
16 CODEC_ID_MP2,
9d36bdc9 17 CODEC_ID_MP3LAME,
81e0d0b4 18 CODEC_ID_VORBIS,
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19 CODEC_ID_AC3,
20 CODEC_ID_MJPEG,
bf89e6b1 21 CODEC_ID_MPEG4,
de6d9b64 22 CODEC_ID_RAWVIDEO,
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23 CODEC_ID_MSMPEG4V1,
24 CODEC_ID_MSMPEG4V2,
25 CODEC_ID_MSMPEG4V3,
e1a9dbff 26 CODEC_ID_WMV1,
b50eef3a 27 CODEC_ID_WMV2,
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28 CODEC_ID_H263P,
29 CODEC_ID_H263I,
be8ffec9 30 CODEC_ID_SVQ1,
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31 CODEC_ID_DVVIDEO,
32 CODEC_ID_DVAUDIO,
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33 CODEC_ID_WMAV1,
34 CODEC_ID_WMAV2,
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35 CODEC_ID_MACE3,
36 CODEC_ID_MACE6,
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37
38 /* various pcm "codecs" */
39 CODEC_ID_PCM_S16LE,
40 CODEC_ID_PCM_S16BE,
41 CODEC_ID_PCM_U16LE,
42 CODEC_ID_PCM_U16BE,
43 CODEC_ID_PCM_S8,
44 CODEC_ID_PCM_U8,
45 CODEC_ID_PCM_MULAW,
46 CODEC_ID_PCM_ALAW,
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47
48 /* various adpcm codecs */
49 CODEC_ID_ADPCM_IMA_QT,
50 CODEC_ID_ADPCM_IMA_WAV,
51 CODEC_ID_ADPCM_MS,
de6d9b64 52};
84afee34 53#define CODEC_ID_MSMPEG4 CODEC_ID_MSMPEG4V3
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54
55enum CodecType {
4a663d80 56 CODEC_TYPE_UNKNOWN = -1,
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57 CODEC_TYPE_VIDEO,
58 CODEC_TYPE_AUDIO,
59};
60
61enum PixelFormat {
9f862d11 62 PIX_FMT_ANY = -1,
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63 PIX_FMT_YUV420P,
64 PIX_FMT_YUV422,
65 PIX_FMT_RGB24,
66 PIX_FMT_BGR24,
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67 PIX_FMT_YUV422P,
68 PIX_FMT_YUV444P,
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69 PIX_FMT_RGBA32,
70 PIX_FMT_BGRA32,
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71 PIX_FMT_YUV410P,
72 PIX_FMT_YUV411P
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73};
74
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75/* currently unused, may be used if 24/32 bits samples ever supported */
76enum SampleFormat {
77 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
78};
79
de6d9b64 80/* in bytes */
bc8d1857 81#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 82
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83/* motion estimation type, EPZS by default */
84enum Motion_Est_ID {
101bea5f 85 ME_ZERO = 1,
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86 ME_FULL,
87 ME_LOG,
88 ME_PHODS,
89 ME_EPZS,
90 ME_X1
91};
92
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93typedef struct RcOverride{
94 int start_frame;
95 int end_frame;
96 int qscale; // if this is 0 then quality_factor will be used instead
97 float quality_factor;
98} RcOverride;
99
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100/* only for ME compatiblity with old apps */
101extern int motion_estimation_method;
102
e4986da9 103/* ME algos sorted by quality */
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104static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
105 ME_X1, ME_EPZS, ME_FULL };
de6d9b64 106
28db7fce 107
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108#define FF_MAX_B_FRAMES 4
109
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110/* encoding support
111 these flags can be passed in AVCodecContext.flags before initing
112 Note: note not everything is supported yet
113*/
de6d9b64 114
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115#define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
116#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
117#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
118#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
119#define CODEC_FLAG_GMC 0x0020 /* use GMC */
120#define CODEC_FLAG_TYPE 0x0040 /* fixed I/P frame type, from avctx->key_frame */
121#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
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122/* parent program gurantees that the input for b-frame containing streams is not written to
123 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 124#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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125#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
126#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
e84c31dc 127#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
b71901e6 128#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
93a21abd 129#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
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130#define CODEC_FLAG_DR1 0x8000 /* direct renderig type 1 (store internal frames in external buffers) */
131#define CODEC_FLAG_NOT_TRUNCATED 0x00010000 /* input bitstream is not truncated, except before a startcode
132 allows the last part of a frame to be decoded earlier */
c5d309f2 133#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
fcb48651 134#define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
9f9c3229 135#define CODEC_FLAG_LOW_DELAY 0x00080000 /* force low delay / will fail on b frames */
c5d309f2 136
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137/* codec capabilities */
138
b71901e6 139#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
93a21abd 140#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
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141/* if 'parse_only' field is true, then avcodec_parse_frame() can be
142 used */
143#define CODEC_CAP_PARSE_ONLY 0x0004
bf89e6b1 144
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145#define FRAME_RATE_BASE 10000
146
147typedef struct AVCodecContext {
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148 /**
149 * the average bitrate
150 * encoding: set by user. unused for constant quantizer encoding
151 * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
152 */
de6d9b64 153 int bit_rate;
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154
155 /**
156 * number of bits the bitstream is allowed to diverge from the reference
157 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
158 * encoding: set by user. unused for constant quantizer encoding
159 * decoding: unused
160 */
161 int bit_rate_tolerance;
162
163 /**
164 * CODEC_FLAG_*
165 * encoding: set by user.
166 * decoding: set by user.
167 */
de6d9b64 168 int flags;
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169
170 /**
171 * some codecs needs additionnal format info. It is stored here
172 * encoding: set by user.
173 * decoding: set by lavc. (FIXME is this ok?)
174 */
175 int sub_id;
176
177 /**
178 * motion estimation algorithm used for video coding
179 * encoding: set by user.
180 * decoding: unused
181 */
182 int me_method;
183
184 /**
185 * some codecs need / can use extra-data like huffman tables
186 * mjpeg: huffman tables
187 * rv10: additional flags
b704e742 188 * mpeg4: global headers (they can be in the bitstream or here)
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189 * encoding: set/allocated/freed by lavc.
190 * decoding: set/allocated/freed by user.
b71901e6 191 */
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192 void *extradata;
193 int extradata_size;
194
de6d9b64 195 /* video only */
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196 /**
197 * frames per sec multiplied by FRAME_RATE_BASE
198 * for variable fps this is the precission, so if the timestamps
199 * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
200 * encoding: set by user
201 * decoding: set by lavc. 0 or the frame_rate if available
202 */
203 int frame_rate;
204
205 /**
206 * encoding: set by user.
207 * decoding: set by user, some codecs might override / change it during playback
208 */
de6d9b64 209 int width, height;
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210
211 /**
212 * encoding: set by user. 0 if not known
213 * decoding: set by lavc. 0 if not known
214 */
11ce8834 215 int aspect_ratio_info;
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216#define FF_ASPECT_SQUARE 1
217#define FF_ASPECT_4_3_625 2
218#define FF_ASPECT_4_3_525 3
219#define FF_ASPECT_16_9_625 4
220#define FF_ASPECT_16_9_525 5
e769f053 221#define FF_ASPECT_EXTENDED 15
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222
223 /**
224 * the number of pictures in a group of pitures, or 0 for intra_only
225 * encoding: set by user.
226 * decoding: unused
227 */
228 int gop_size;
229
230 /**
231 * pixel format, see PIX_FMT_xxx
232 * encoding: unused
233 * decoding: set by lavc.
234 */
235 enum PixelFormat pix_fmt;
236
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237 int repeat_pict; /* when decoding, this signal how much the picture */
238 /* must be delayed. */
239 /* extra_delay = (repeat_pict / 2) * (1/fps) */
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240
241 /**
242 * if non NULL, 'draw_horiz_band' is called by the libavcodec
243 * decoder to draw an horizontal band. It improve cache usage. Not
244 * all codecs can do that. You must check the codec capabilities
245 * before
246 * encoding: unused
247 * decoding: set by user.
248 */
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249 void (*draw_horiz_band)(struct AVCodecContext *s,
250 UINT8 **src_ptr, int linesize,
251 int y, int width, int height);
252
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253 /* audio only */
254 int sample_rate; /* samples per sec */
255 int channels;
a96b68b7 256 int sample_fmt; /* sample format, currenly unused */
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257
258 /* the following data should not be initialized */
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259 int frame_size; /* in samples, initialized when calling 'init' */
260 int frame_number; /* audio or video frame number */
261 int real_pict_num; /* returns the real picture number of
262 previous encoded frame */
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263
264 /**
265 * 1 -> keyframe, 0-> not
266 * encoding: set by lavc (for the outputed bitstream, not the input frame)
267 * decoding: set by lavc (for the decoded bitstream, not the displayed frame)
268 */
269 int key_frame;
270
271 /**
272 * picture type of the previous en/decoded frame, see ?_TYPE below
273 * encoding: set by lavc (for the outputed bitstream, not the input frame)
274 * decoding: set by lavc (for the decoded bitstream, not the displayed frame)
275 */
276 int pict_type;
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277/* FIXME: these should have FF_ */
278#define I_TYPE 1 // Intra
279#define P_TYPE 2 // Predicted
280#define B_TYPE 3 // Bi-dir predicted
281#define S_TYPE 4 // S(GMC)-VOP MPEG4
282
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283 /**
284 * number of frames the decoded output will be delayed relative to
285 * the encoded input
286 * encoding: set by lavc.
287 * decoding: unused
288 */
289 int delay;
290
291 /**
292 * mbskip_table[mb]=1 if MB didnt change, is only valid for I/P frames
293 * stride= mb_width = (width+15)>>4 (FIXME export stride?)
294 * encoding: unused
295 * decoding: set by lavc
296 */
297 uint8_t *mbskip_table;
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298
299 /* encoding parameters */
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300 /**
301 * quality (between 1 (good) and 31 (bad))
302 * encoding: set by user if CODEC_FLAG_QSCALE is set otherwise set by lavc
303 * decoding: set by lavc
304 */
de6d9b64 305 int quality; /* quality of the previous encoded frame
c5d309f2 306
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307 this is allso used to set the quality in vbr mode
308 and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
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309 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
310 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
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311
312 /**
313 * minimum quantizer
314 * encoding: set by user.
315 * decoding: unused
316 */
317 int qmin;
318
319 /**
320 * maximum quantizer
321 * encoding: set by user.
322 * decoding: unused
323 */
324 int qmax;
325
326 /**
327 * maximum quantizer difference etween frames
328 * encoding: set by user.
329 * decoding: unused
330 */
331 int max_qdiff;
332
333 /**
334 * maximum number of b frames between non b frames
335 * note: the output will be delayed by max_b_frames+1 relative to the input
336 * encoding: set by user.
337 * decoding: unused
338 */
339 int max_b_frames;
340
341 /**
342 * qscale factor between ip and b frames
343 * encoding: set by user.
344 * decoding: unused
345 */
346 float b_quant_factor;
347
348 /** obsolete FIXME remove */
349 int rc_strategy;
8b4c7dbc 350 int b_frame_strategy;
9dbcbd92 351
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352 /**
353 * encoding: unused
354 * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too
355 */
356 int hurry_up;
2417652e 357
de6d9b64 358 struct AVCodec *codec;
b71901e6 359
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360 void *priv_data;
361
644d98a4 362 /* The following data is for RTP friendly coding */
1f6b6e50 363 /* By now only H.263/H.263+/MPEG4 coder honours this */
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364 int rtp_mode; /* 1 for activate RTP friendly-mode */
365 /* highers numbers represent more error-prone */
366 /* enviroments, by now just "1" exist */
367
368 int rtp_payload_size; /* The size of the RTP payload, the coder will */
369 /* do it's best to deliver a chunk with size */
370 /* below rtp_payload_size, the chunk will start */
371 /* with a start code on some codecs like H.263 */
372 /* This doesn't take account of any particular */
373 /* headers inside the transmited RTP payload */
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374
375
376 /* The RTP callcack: This function is called */
377 /* every time the encoder as a packet to send */
378 /* Depends on the encoder if the data starts */
379 /* with a Start Code (it should) H.263 does */
380 void (*rtp_callback)(void *data, int size, int packet_number);
381
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382 /**
383 * if you set get_psnr to 1 then after encoding you will have the
384 * PSNR on psnr_y/cb/cr
385 * encoding: set by user (1-> on, 0-> off)
386 * decoding: unused
387 */
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388 int get_psnr;
389 float psnr_y;
390 float psnr_cb;
391 float psnr_cr;
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392
393 /* statistics, used for 2-pass encoding */
394 int mv_bits;
395 int header_bits;
396 int i_tex_bits;
397 int p_tex_bits;
398 int i_count;
399 int p_count;
400 int skip_count;
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401 int misc_bits;
402
403 /**
404 * number of bits used for the previously encoded frame
405 * encoding: set by lavc
406 * decoding: unused
407 */
098eefe1 408 int frame_bits;
644d98a4 409
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410 /**
411 * private data of the user, can be used to carry app specific stuff
412 * encoding: set by user
413 * decoding: set by user
414 */
415 void *opaque;
416
de6d9b64 417 char codec_name[32];
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418 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
419 enum CodecID codec_id; /* see CODEC_ID_xxx */
de6d9b64 420 unsigned int codec_tag; /* codec tag, only used if unknown codec */
92ba5ffb 421
b71901e6 422 /**
4d2858de 423 * workaround bugs in encoders which sometimes cannot be detected automatically
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424 * encoding: unused
425 * decoding: set by user
426 */
427 int workaround_bugs;
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428#define FF_BUG_AUTODETECT 1 //autodetection
429#define FF_BUG_OLD_MSMPEG4 2
430#define FF_BUG_XVID_ILACE 4
431#define FF_BUG_UMP4 8
432#define FF_BUG_NO_PADDING 16
433#define FF_BUG_AC_VLC 32
03e93d35 434#define FF_BUG_QPEL_CHROMA 64
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435//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
436
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437 /**
438 * encoding: set by user
439 * decoding: unused
440 */
1f6b6e50 441 int luma_elim_threshold;
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442
443 /**
444 * encoding: set by user
445 * decoding: unused
446 */
1f6b6e50 447 int chroma_elim_threshold;
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448
449 /**
450 * strictly follow the std (MPEG4, ...)
451 * encoding: set by user
452 * decoding: unused
453 */
454 int strict_std_compliance;
455
456 /**
457 * qscale offset between ip and b frames
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458 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
459 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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460 * encoding: set by user.
461 * decoding: unused
462 */
463 float b_quant_offset;
464
465 /**
466 * error resilience {-1,0,1} higher values will detect more errors but may missdetect
467 * some more or less valid parts as errors
468 * encoding: unused
469 * decoding: set by user
470 */
1f6b6e50 471 int error_resilience;
ae72cda6 472
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473 /**
474 * obsolete, just here to keep ABI compatible (should be removed perhaps, dunno)
475 */
476 int *quant_store;
93a21abd 477
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478 /**
479 * QP store stride
480 * encoding: unused
481 * decoding: set by lavc
482 */
483 int qstride;
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484
485 /**
486 * buffer, where the next picture should be decoded into
487 * encoding: unused
488 * decoding: set by user in get_buffer_callback to a buffer into which the next part
489 * of the bitstream will be decoded, and set by lavc at end of frame to the
490 * next frame which needs to be displayed
491 */
93a21abd 492 uint8_t *dr_buffer[3];
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493
494 /**
495 * stride of the luminance part of the dr buffer
496 * encoding: unused
497 * decoding: set by user
498 */
93a21abd 499 int dr_stride;
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500
501 /**
502 * same behavior as dr_buffer, just for some private data of the user
503 * encoding: unused
504 * decoding: set by user in get_buffer_callback, and set by lavc at end of frame
505 */
93a21abd 506 void *dr_opaque_frame;
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507
508 /**
509 * called at the beginning of each frame to get a buffer for it
510 * encoding: unused
511 * decoding: set by user
512 */
d6db1c9c 513 int (*get_buffer_callback)(struct AVCodecContext *c, int width, int height, int pict_type);
0fd90455 514
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515 /**
516 * is 1 if the decoded stream contains b frames, 0 otherwise
517 * encoding: unused
518 * decoding: set by lavc
519 */
520 int has_b_frames;
521
522 /**
523 * stride of the chrominance part of the dr buffer
524 * encoding: unused
525 * decoding: set by user
526 */
0fd90455 527 int dr_uvstride;
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528
529 /**
530 * number of dr buffers
531 * encoding: unused
532 * decoding: set by user
533 */
0fd90455 534 int dr_ip_buffer_count;
b71901e6 535
bc8d1857 536 int block_align; /* used by some WAV based audio codecs */
ce980a95 537
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538 int parse_only; /* decoding only: if true, only parsing is done
539 (function avcodec_parse_frame()). The frame
540 data is returned. Only MPEG codecs support this now. */
ce980a95 541
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542 /**
543 * 0-> h263 quant 1-> mpeg quant
544 * encoding: set by user.
545 * decoding: unused
546 */
547 int mpeg_quant;
ce980a95 548
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549 /**
550 * pass1 encoding statistics output buffer
551 * encoding: set by lavc
552 * decoding: unused
553 */
ce980a95 554 char *stats_out; /* encoding statistics output buffer */
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555
556 /**
557 * pass2 encoding statistics input buffer.
558 * concatenated stuff from stats_out of pass1 should be placed here
559 * encoding: allocated/set/freed by user
560 * decoding: unused
561 */
562 char *stats_in;
563
564 /**
565 * ratecontrol qmin qmax limiting method
566 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
567 * encoding: set by user.
568 * decoding: unused
569 */
ce980a95 570 float rc_qsquish;
b71901e6 571
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572 float rc_qmod_amp;
573 int rc_qmod_freq;
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574
575 /**
576 * ratecontrol override, see RcOverride
577 * encoding: allocated/set/freed by user.
578 * decoding: unused
579 */
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580 RcOverride *rc_override;
581 int rc_override_count;
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582
583 /**
584 * rate control equation
585 * encoding: set by user
586 * decoding: unused
587 */
ce980a95 588 char *rc_eq;
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589
590 /**
591 * maximum bitrate
592 * encoding: set by user.
593 * decoding: unused
594 */
ce980a95 595 int rc_max_rate;
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596
597 /**
598 * minimum bitrate
599 * encoding: set by user.
600 * decoding: unused
601 */
ce980a95 602 int rc_min_rate;
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603
604 /**
605 * decoder bitstream buffer size
606 * encoding: set by user.
607 * decoding: unused
608 */
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609 int rc_buffer_size;
610 float rc_buffer_aggressivity;
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611
612 /**
613 * qscale factor between p and i frames
614 * encoding: set by user.
615 * decoding: unused
616 */
617 float i_quant_factor;
618
619 /**
620 * qscale offset between p and i frames
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621 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
622 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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623 * encoding: set by user.
624 * decoding: unused
625 */
626 float i_quant_offset;
627
628 /**
629 * initial complexity for pass1 ratecontrol
630 * encoding: set by user.
631 * decoding: unused
632 */
ce980a95 633 float rc_initial_cplx;
917e06c8 634
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635 /**
636 * custom aspect ratio, used if aspect_info==FF_ASPECT_EXTENDED
637 * encoding: set by user.
638 * decoding: set by lavc.
639 */
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640 int aspected_width;
641 int aspected_height;
642
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643 /**
644 * dct algorithm, see FF_DCT_* below
645 * encoding: set by user
646 * decoding: unused
647 */
28db7fce 648 int dct_algo;
c7e07931 649#define FF_DCT_AUTO 0
28db7fce 650#define FF_DCT_FASTINT 1
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651#define FF_DCT_INT 2
652#define FF_DCT_MMX 3
653#define FF_DCT_MLIB 4
05c4072b 654#define FF_DCT_ALTIVEC 5
28db7fce 655
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656 /**
657 * presentation timestamp in micro seconds (time when frame should be shown to user)
658 * if 0 then the frame_rate will be used as reference
659 * encoding: set by user
660 * decoding; set by lavc
661 */
662 long long int pts;
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663
664 /**
665 * luminance masking (0-> disabled)
666 * encoding: set by user
667 * decoding: unused
668 */
669 float lumi_masking;
670
671 /**
672 * temporary complexity masking (0-> disabled)
673 * encoding: set by user
674 * decoding: unused
675 */
676 float temporal_cplx_masking;
677
678 /**
679 * spatial complexity masking (0-> disabled)
680 * encoding: set by user
681 * decoding: unused
682 */
683 float spatial_cplx_masking;
684
685 /**
686 * p block masking (0-> disabled)
687 * encoding: set by user
688 * decoding: unused
689 */
690 float p_masking;
15415af4 691
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692 /**
693 * darkness masking (0-> disabled)
694 * encoding: set by user
695 * decoding: unused
696 */
697 float dark_masking;
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698
699 /**
700 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
701 * this is used to workaround some encoder bugs
702 * encoding: unused
202ef8b8 703 * decoding: set by user, will be converted to upper case by lavc during init
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704 */
705 int fourcc;
5e746b99 706
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707 /**
708 * idct algorithm, see FF_IDCT_* below
709 * encoding: set by user
710 * decoding: set by user
711 */
712 int idct_algo;
713#define FF_IDCT_AUTO 0
714#define FF_IDCT_INT 1
715#define FF_IDCT_SIMPLE 2
716#define FF_IDCT_SIMPLEMMX 3
717#define FF_IDCT_LIBMPEG2MMX 4
718#define FF_IDCT_PS2 5
719#define FF_IDCT_MLIB 6
720#define FF_IDCT_ARM 7
05c4072b 721#define FF_IDCT_ALTIVEC 8
2ad1516a 722
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723 /**
724 * slice count
725 * encoding: set by lavc
726 * decoding: set by user (or 0)
727 */
728 int slice_count;
729 /**
730 * slice offsets in the frame in bytes
731 * encoding: set/allocated by lavc
732 * decoding: set/allocated by user (or NULL)
733 */
734 int *slice_offset;
735
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736 /**
737 * error concealment flags
738 * encoding: unused
739 * decoding: set by user
740 */
741 int error_concealment;
742#define FF_EC_GUESS_MVS 1
743#define FF_EC_DEBLOCK 2
744
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745 /**
746 * QP table of the currently decoded frame
747 * encoding; unused
748 * decoding: set by lavc
749 */
750 int8_t *current_qscale_table;
751 /**
752 * QP table of the currently displayed frame
753 * encoding; unused
754 * decoding: set by lavc
755 */
756 int8_t *display_qscale_table;
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757} AVCodecContext;
758
759typedef struct AVCodec {
760 char *name;
761 int type;
762 int id;
763 int priv_data_size;
764 int (*init)(AVCodecContext *);
765 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
766 int (*close)(AVCodecContext *);
0fd90455 767 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
de6d9b64 768 UINT8 *buf, int buf_size);
bf89e6b1 769 int capabilities;
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770 struct AVCodec *next;
771} AVCodec;
772
773/* three components are given, that's all */
774typedef struct AVPicture {
775 UINT8 *data[3];
776 int linesize[3];
777} AVPicture;
778
779extern AVCodec ac3_encoder;
780extern AVCodec mp2_encoder;
9d36bdc9 781extern AVCodec mp3lame_encoder;
81e0d0b4 782extern AVCodec oggvorbis_encoder;
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783extern AVCodec mpeg1video_encoder;
784extern AVCodec h263_encoder;
785extern AVCodec h263p_encoder;
786extern AVCodec rv10_encoder;
787extern AVCodec mjpeg_encoder;
bf89e6b1 788extern AVCodec mpeg4_encoder;
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789extern AVCodec msmpeg4v1_encoder;
790extern AVCodec msmpeg4v2_encoder;
791extern AVCodec msmpeg4v3_encoder;
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792extern AVCodec wmv1_encoder;
793extern AVCodec wmv2_encoder;
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794
795extern AVCodec h263_decoder;
bf89e6b1 796extern AVCodec mpeg4_decoder;
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797extern AVCodec msmpeg4v1_decoder;
798extern AVCodec msmpeg4v2_decoder;
799extern AVCodec msmpeg4v3_decoder;
e1a9dbff 800extern AVCodec wmv1_decoder;
0151a6f5 801extern AVCodec wmv2_decoder;
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802extern AVCodec mpeg_decoder;
803extern AVCodec h263i_decoder;
804extern AVCodec rv10_decoder;
be8ffec9 805extern AVCodec svq1_decoder;
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806extern AVCodec dvvideo_decoder;
807extern AVCodec dvaudio_decoder;
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808extern AVCodec wmav1_decoder;
809extern AVCodec wmav2_decoder;
4e66ab3b 810extern AVCodec mjpeg_decoder;
4b1f4f23 811extern AVCodec mp2_decoder;
a96b68b7 812extern AVCodec mp3_decoder;
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813extern AVCodec mace3_decoder;
814extern AVCodec mace6_decoder;
de6d9b64 815
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816/* pcm codecs */
817#define PCM_CODEC(id, name) \
818extern AVCodec name ## _decoder; \
819extern AVCodec name ## _encoder;
820
821PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
822PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
823PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
824PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
825PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
826PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
827PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
828PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
829
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830/* adpcm codecs */
831
832PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
833PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
834PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
835
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836#undef PCM_CODEC
837
838/* dummy raw video codec */
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839extern AVCodec rawvideo_codec;
840
841/* the following codecs use external GPL libs */
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842extern AVCodec ac3_decoder;
843
844/* resample.c */
845
846struct ReSampleContext;
847
848typedef struct ReSampleContext ReSampleContext;
849
850ReSampleContext *audio_resample_init(int output_channels, int input_channels,
851 int output_rate, int input_rate);
852int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
853void audio_resample_close(ReSampleContext *s);
854
855/* YUV420 format is assumed ! */
856
857struct ImgReSampleContext;
858
859typedef struct ImgReSampleContext ImgReSampleContext;
860
861ImgReSampleContext *img_resample_init(int output_width, int output_height,
862 int input_width, int input_height);
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863
864ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
865 int iwidth, int iheight,
866 int topBand, int bottomBand,
867 int leftBand, int rightBand);
868
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869void img_resample(ImgReSampleContext *s,
870 AVPicture *output, AVPicture *input);
871
872void img_resample_close(ImgReSampleContext *s);
873
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874void avpicture_fill(AVPicture *picture, UINT8 *ptr,
875 int pix_fmt, int width, int height);
876int avpicture_get_size(int pix_fmt, int width, int height);
877
878/* convert among pixel formats */
879int img_convert(AVPicture *dst, int dst_pix_fmt,
880 AVPicture *src, int pix_fmt,
881 int width, int height);
882
883/* deinterlace a picture */
884int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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885 int pix_fmt, int width, int height);
886
887/* external high level API */
888
889extern AVCodec *first_avcodec;
890
156e5023 891/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 892unsigned avcodec_version(void);
8bceb6af 893/* returns LIBAVCODEC_BUILD constant */
51a49663 894unsigned avcodec_build(void);
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895void avcodec_init(void);
896
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897void avcodec_set_bit_exact(void);
898
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899void register_avcodec(AVCodec *format);
900AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 901AVCodec *avcodec_find_encoder_by_name(const char *name);
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902AVCodec *avcodec_find_decoder(enum CodecID id);
903AVCodec *avcodec_find_decoder_by_name(const char *name);
904void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
905
7ffbb60e 906AVCodecContext *avcodec_alloc_context(void);
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907int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
908int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
909 int *frame_size_ptr,
910 UINT8 *buf, int buf_size);
911int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
912 int *got_picture_ptr,
913 UINT8 *buf, int buf_size);
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914int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
915 int *data_size_ptr,
916 UINT8 *buf, int buf_size);
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917int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
918 const short *samples);
919int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
920 const AVPicture *pict);
921
922int avcodec_close(AVCodecContext *avctx);
923
924void avcodec_register_all(void);
a96b68b7 925
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926void avcodec_flush_buffers(AVCodecContext *avctx);
927
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928// deprecated / obsolete stuff, WILL be removed
929#ifndef MBC
930#define MBC 128
931#define MBR 96
79e7b305 932#endif
6b72ac63 933#define QP_TYPE int
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934
935/**
936 * Interface for 0.5.0 version
937 *
938 * do not even think about it's usage for this moment
939 */
940
941typedef struct {
942 // compressed size used from given memory buffer
943 int size;
944 /// I/P/B frame type
945 int frame_type;
946} avc_enc_result_t;
947
948/**
949 * Commands
950 * order can't be changed - once it was defined
951 */
952typedef enum {
953 // general commands
954 AVC_OPEN_BY_NAME = 0xACA000,
955 AVC_OPEN_BY_CODEC_ID,
956 AVC_OPEN_BY_FOURCC,
957 AVC_CLOSE,
958
959 AVC_FLUSH,
960 // pin - struct { uint8_t* src, uint_t src_size }
961 // pout - struct { AVPicture* img, consumed_bytes,
962 AVC_DECODE,
963 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
964 // pout - uint_t used_from_dest_size
965 AVC_ENCODE,
966
967 // query/get video commands
968 AVC_GET_VERSION = 0xACB000,
969 AVC_GET_WIDTH,
970 AVC_GET_HEIGHT,
971 AVC_GET_DELAY,
972 AVC_GET_QUANT_TABLE,
973 // ...
974
975 // query/get audio commands
976 AVC_GET_FRAME_SIZE = 0xABC000,
977
978 // maybe define some simple structure which
979 // might be passed to the user - but they can't
980 // contain any codec specific parts and these
981 // calls are usualy necessary only few times
982
983 // set video commands
984 AVC_SET_WIDTH = 0xACD000,
985 AVC_SET_HEIGHT,
986
987 // set video encoding commands
988 AVC_SET_FRAME_RATE = 0xACD800,
989 AVC_SET_QUALITY,
990 AVC_SET_HURRY_UP,
991
992 // set audio commands
993 AVC_SET_SAMPLE_RATE = 0xACE000,
994 AVC_SET_CHANNELS,
995
996} avc_cmd_t;
997
998/**
999 * \param handle allocated private structure by libavcodec
1000 * for initialization pass NULL - will be returned pout
1001 * user is supposed to know nothing about its structure
1002 * \param cmd type of operation to be performed
1003 * \param pint input parameter
1004 * \param pout output parameter
1005 *
1006 * \returns command status - eventually for query command it might return
1007 * integer resulting value
1008 */
1009int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1010
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1011/* memory */
1012void *av_malloc(int size);
1013void *av_mallocz(int size);
1014void av_free(void *ptr);
1015void __av_freep(void **ptr);
1016#define av_freep(p) __av_freep((void **)(p))
1017
a96b68b7 1018#endif /* AVCODEC_H */