* two functions to handle allocation of static data more simple
[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 4640
9#define LIBAVCODEC_BUILD_STR "4640"
4b1f4f23 10
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11enum CodecID {
12 CODEC_ID_NONE,
13 CODEC_ID_MPEG1VIDEO,
14 CODEC_ID_H263,
15 CODEC_ID_RV10,
16 CODEC_ID_MP2,
9d36bdc9 17 CODEC_ID_MP3LAME,
81e0d0b4 18 CODEC_ID_VORBIS,
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19 CODEC_ID_AC3,
20 CODEC_ID_MJPEG,
b135d9fb 21 CODEC_ID_MJPEGB,
bf89e6b1 22 CODEC_ID_MPEG4,
de6d9b64 23 CODEC_ID_RAWVIDEO,
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24 CODEC_ID_MSMPEG4V1,
25 CODEC_ID_MSMPEG4V2,
26 CODEC_ID_MSMPEG4V3,
e1a9dbff 27 CODEC_ID_WMV1,
b50eef3a 28 CODEC_ID_WMV2,
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29 CODEC_ID_H263P,
30 CODEC_ID_H263I,
be8ffec9 31 CODEC_ID_SVQ1,
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32 CODEC_ID_DVVIDEO,
33 CODEC_ID_DVAUDIO,
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34 CODEC_ID_WMAV1,
35 CODEC_ID_WMAV2,
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36 CODEC_ID_MACE3,
37 CODEC_ID_MACE6,
11f18faf 38 CODEC_ID_HUFFYUV,
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39
40 /* various pcm "codecs" */
41 CODEC_ID_PCM_S16LE,
42 CODEC_ID_PCM_S16BE,
43 CODEC_ID_PCM_U16LE,
44 CODEC_ID_PCM_U16BE,
45 CODEC_ID_PCM_S8,
46 CODEC_ID_PCM_U8,
47 CODEC_ID_PCM_MULAW,
48 CODEC_ID_PCM_ALAW,
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49
50 /* various adpcm codecs */
51 CODEC_ID_ADPCM_IMA_QT,
52 CODEC_ID_ADPCM_IMA_WAV,
53 CODEC_ID_ADPCM_MS,
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54};
55
56enum CodecType {
4a663d80 57 CODEC_TYPE_UNKNOWN = -1,
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58 CODEC_TYPE_VIDEO,
59 CODEC_TYPE_AUDIO,
60};
61
62enum PixelFormat {
9f862d11 63 PIX_FMT_ANY = -1,
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64 PIX_FMT_YUV420P,
65 PIX_FMT_YUV422,
66 PIX_FMT_RGB24,
67 PIX_FMT_BGR24,
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68 PIX_FMT_YUV422P,
69 PIX_FMT_YUV444P,
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70 PIX_FMT_RGBA32,
71 PIX_FMT_BGRA32,
e9feea59 72 PIX_FMT_YUV410P,
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73 PIX_FMT_YUV411P,
74 PIX_FMT_RGB565,
75 PIX_FMT_RGB555,
76// PIX_FMT_RGB5551,
77 PIX_FMT_BGR565,
78 PIX_FMT_BGR555,
79// PIX_FMT_GBR565,
80// PIX_FMT_GBR555
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81};
82
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83/* currently unused, may be used if 24/32 bits samples ever supported */
84enum SampleFormat {
85 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
86};
87
de6d9b64 88/* in bytes */
bc8d1857 89#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 90
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91/**
92 * Required number of zero bytes at the end of the input bitstream for decoding.
93 * to avoid overreading (and possibly segfaulting)
94 */
95#define FF_INPUT_BUFFER_PADDING_SIZE 8
96
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97/* motion estimation type, EPZS by default */
98enum Motion_Est_ID {
101bea5f 99 ME_ZERO = 1,
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100 ME_FULL,
101 ME_LOG,
102 ME_PHODS,
103 ME_EPZS,
104 ME_X1
105};
106
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107typedef struct RcOverride{
108 int start_frame;
109 int end_frame;
110 int qscale; // if this is 0 then quality_factor will be used instead
111 float quality_factor;
112} RcOverride;
113
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114/* only for ME compatiblity with old apps */
115extern int motion_estimation_method;
116
e4986da9 117/* ME algos sorted by quality */
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118static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
119 ME_X1, ME_EPZS, ME_FULL };
de6d9b64 120
28db7fce 121
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122#define FF_MAX_B_FRAMES 4
123
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124/* encoding support
125 these flags can be passed in AVCodecContext.flags before initing
126 Note: note not everything is supported yet
127*/
de6d9b64 128
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129#define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
130#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
131#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
132#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
133#define CODEC_FLAG_GMC 0x0020 /* use GMC */
b71901e6 134#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
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135/* parent program gurantees that the input for b-frame containing streams is not written to
136 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 137#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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138#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
139#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
e84c31dc 140#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
b71901e6 141#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
93a21abd 142#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
b71901e6 143#define CODEC_FLAG_DR1 0x8000 /* direct renderig type 1 (store internal frames in external buffers) */
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144#define CODEC_FLAG_TRUNCATED 0x00010000 /* input bitstream might be truncated at a random location instead
145 of only at frame boundaries */
c5d309f2 146#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
fcb48651 147#define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
9f9c3229 148#define CODEC_FLAG_LOW_DELAY 0x00080000 /* force low delay / will fail on b frames */
5d3cea3a 149#define CODEC_FLAG_ALT_SCAN 0x00100000 /* use alternate scan */
c5d309f2 150
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151/* codec capabilities */
152
b71901e6 153#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
93a21abd 154#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
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155/* if 'parse_only' field is true, then avcodec_parse_frame() can be
156 used */
157#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 158#define CODEC_CAP_TRUNCATED 0x0008
bf89e6b1 159
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160#define FRAME_RATE_BASE 10000
161
162typedef struct AVCodecContext {
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163 /**
164 * the average bitrate
165 * encoding: set by user. unused for constant quantizer encoding
166 * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
167 */
de6d9b64 168 int bit_rate;
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169
170 /**
171 * number of bits the bitstream is allowed to diverge from the reference
172 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
173 * encoding: set by user. unused for constant quantizer encoding
174 * decoding: unused
175 */
176 int bit_rate_tolerance;
177
178 /**
179 * CODEC_FLAG_*
180 * encoding: set by user.
181 * decoding: set by user.
182 */
de6d9b64 183 int flags;
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184
185 /**
186 * some codecs needs additionnal format info. It is stored here
187 * encoding: set by user.
188 * decoding: set by lavc. (FIXME is this ok?)
189 */
190 int sub_id;
191
192 /**
193 * motion estimation algorithm used for video coding
194 * encoding: set by user.
195 * decoding: unused
196 */
197 int me_method;
198
199 /**
200 * some codecs need / can use extra-data like huffman tables
201 * mjpeg: huffman tables
202 * rv10: additional flags
b704e742 203 * mpeg4: global headers (they can be in the bitstream or here)
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204 * encoding: set/allocated/freed by lavc.
205 * decoding: set/allocated/freed by user.
b71901e6 206 */
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207 void *extradata;
208 int extradata_size;
209
de6d9b64 210 /* video only */
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211 /**
212 * frames per sec multiplied by FRAME_RATE_BASE
213 * for variable fps this is the precission, so if the timestamps
214 * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
215 * encoding: set by user
216 * decoding: set by lavc. 0 or the frame_rate if available
217 */
218 int frame_rate;
219
220 /**
221 * encoding: set by user.
222 * decoding: set by user, some codecs might override / change it during playback
223 */
de6d9b64 224 int width, height;
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225
226 /**
5d3cea3a 227 * Obsolete, will be removed
b71901e6 228 */
11ce8834 229 int aspect_ratio_info;
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230#define FF_ASPECT_SQUARE 1
231#define FF_ASPECT_4_3_625 2
232#define FF_ASPECT_4_3_525 3
233#define FF_ASPECT_16_9_625 4
234#define FF_ASPECT_16_9_525 5
e769f053 235#define FF_ASPECT_EXTENDED 15
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236
237 /**
238 * the number of pictures in a group of pitures, or 0 for intra_only
239 * encoding: set by user.
240 * decoding: unused
241 */
242 int gop_size;
243
244 /**
245 * pixel format, see PIX_FMT_xxx
246 * encoding: unused
247 * decoding: set by lavc.
248 */
249 enum PixelFormat pix_fmt;
250
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251 int repeat_pict; /* when decoding, this signal how much the picture */
252 /* must be delayed. */
253 /* extra_delay = (repeat_pict / 2) * (1/fps) */
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254
255 /**
256 * if non NULL, 'draw_horiz_band' is called by the libavcodec
257 * decoder to draw an horizontal band. It improve cache usage. Not
258 * all codecs can do that. You must check the codec capabilities
259 * before
260 * encoding: unused
261 * decoding: set by user.
262 */
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263 void (*draw_horiz_band)(struct AVCodecContext *s,
264 UINT8 **src_ptr, int linesize,
265 int y, int width, int height);
266
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267 /* audio only */
268 int sample_rate; /* samples per sec */
269 int channels;
a96b68b7 270 int sample_fmt; /* sample format, currenly unused */
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271
272 /* the following data should not be initialized */
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273 int frame_size; /* in samples, initialized when calling 'init' */
274 int frame_number; /* audio or video frame number */
275 int real_pict_num; /* returns the real picture number of
276 previous encoded frame */
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277
278 /**
279 * 1 -> keyframe, 0-> not
280 * encoding: set by lavc (for the outputed bitstream, not the input frame)
281 * decoding: set by lavc (for the decoded bitstream, not the displayed frame)
282 */
283 int key_frame;
284
285 /**
286 * picture type of the previous en/decoded frame, see ?_TYPE below
287 * encoding: set by lavc (for the outputed bitstream, not the input frame)
288 * decoding: set by lavc (for the decoded bitstream, not the displayed frame)
289 */
290 int pict_type;
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291/* FIXME: these should have FF_ */
292#define I_TYPE 1 // Intra
293#define P_TYPE 2 // Predicted
294#define B_TYPE 3 // Bi-dir predicted
295#define S_TYPE 4 // S(GMC)-VOP MPEG4
296
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297 /**
298 * number of frames the decoded output will be delayed relative to
299 * the encoded input
300 * encoding: set by lavc.
301 * decoding: unused
302 */
303 int delay;
304
305 /**
306 * mbskip_table[mb]=1 if MB didnt change, is only valid for I/P frames
307 * stride= mb_width = (width+15)>>4 (FIXME export stride?)
308 * encoding: unused
309 * decoding: set by lavc
310 */
311 uint8_t *mbskip_table;
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312
313 /* encoding parameters */
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314 /**
315 * quality (between 1 (good) and 31 (bad))
316 * encoding: set by user if CODEC_FLAG_QSCALE is set otherwise set by lavc
317 * decoding: set by lavc
318 */
de6d9b64 319 int quality; /* quality of the previous encoded frame
c5d309f2 320
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321 this is allso used to set the quality in vbr mode
322 and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
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323 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
324 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
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325
326 /**
327 * minimum quantizer
328 * encoding: set by user.
329 * decoding: unused
330 */
331 int qmin;
332
333 /**
334 * maximum quantizer
335 * encoding: set by user.
336 * decoding: unused
337 */
338 int qmax;
339
340 /**
341 * maximum quantizer difference etween frames
342 * encoding: set by user.
343 * decoding: unused
344 */
345 int max_qdiff;
346
347 /**
348 * maximum number of b frames between non b frames
349 * note: the output will be delayed by max_b_frames+1 relative to the input
350 * encoding: set by user.
351 * decoding: unused
352 */
353 int max_b_frames;
354
355 /**
356 * qscale factor between ip and b frames
357 * encoding: set by user.
358 * decoding: unused
359 */
360 float b_quant_factor;
361
362 /** obsolete FIXME remove */
363 int rc_strategy;
8b4c7dbc 364 int b_frame_strategy;
9dbcbd92 365
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366 /**
367 * encoding: unused
347ae22e 368 * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
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369 */
370 int hurry_up;
2417652e 371
de6d9b64 372 struct AVCodec *codec;
b71901e6 373
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374 void *priv_data;
375
644d98a4 376 /* The following data is for RTP friendly coding */
1f6b6e50 377 /* By now only H.263/H.263+/MPEG4 coder honours this */
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378 int rtp_mode; /* 1 for activate RTP friendly-mode */
379 /* highers numbers represent more error-prone */
380 /* enviroments, by now just "1" exist */
381
382 int rtp_payload_size; /* The size of the RTP payload, the coder will */
383 /* do it's best to deliver a chunk with size */
384 /* below rtp_payload_size, the chunk will start */
385 /* with a start code on some codecs like H.263 */
386 /* This doesn't take account of any particular */
387 /* headers inside the transmited RTP payload */
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388
389
390 /* The RTP callcack: This function is called */
391 /* every time the encoder as a packet to send */
392 /* Depends on the encoder if the data starts */
393 /* with a Start Code (it should) H.263 does */
394 void (*rtp_callback)(void *data, int size, int packet_number);
395
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396 /**
397 * if you set get_psnr to 1 then after encoding you will have the
398 * PSNR on psnr_y/cb/cr
399 * encoding: set by user (1-> on, 0-> off)
400 * decoding: unused
401 */
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402 int get_psnr;
403 float psnr_y;
404 float psnr_cb;
405 float psnr_cr;
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406
407 /* statistics, used for 2-pass encoding */
408 int mv_bits;
409 int header_bits;
410 int i_tex_bits;
411 int p_tex_bits;
412 int i_count;
413 int p_count;
414 int skip_count;
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415 int misc_bits;
416
417 /**
418 * number of bits used for the previously encoded frame
419 * encoding: set by lavc
8350df97 420 * decoding: - for audio - bits_per_sample
b71901e6 421 */
098eefe1 422 int frame_bits;
644d98a4 423
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424 /**
425 * private data of the user, can be used to carry app specific stuff
426 * encoding: set by user
427 * decoding: set by user
428 */
429 void *opaque;
430
de6d9b64 431 char codec_name[32];
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432 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
433 enum CodecID codec_id; /* see CODEC_ID_xxx */
de6d9b64 434 unsigned int codec_tag; /* codec tag, only used if unknown codec */
92ba5ffb 435
b71901e6 436 /**
4d2858de 437 * workaround bugs in encoders which sometimes cannot be detected automatically
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438 * encoding: unused
439 * decoding: set by user
440 */
441 int workaround_bugs;
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442#define FF_BUG_AUTODETECT 1 //autodetection
443#define FF_BUG_OLD_MSMPEG4 2
444#define FF_BUG_XVID_ILACE 4
445#define FF_BUG_UMP4 8
446#define FF_BUG_NO_PADDING 16
447#define FF_BUG_AC_VLC 32
03e93d35 448#define FF_BUG_QPEL_CHROMA 64
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449//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
450
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451 /**
452 * encoding: set by user
453 * decoding: unused
454 */
1f6b6e50 455 int luma_elim_threshold;
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456
457 /**
458 * encoding: set by user
459 * decoding: unused
460 */
1f6b6e50 461 int chroma_elim_threshold;
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462
463 /**
464 * strictly follow the std (MPEG4, ...)
465 * encoding: set by user
466 * decoding: unused
467 */
468 int strict_std_compliance;
469
470 /**
471 * qscale offset between ip and b frames
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472 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
473 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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474 * encoding: set by user.
475 * decoding: unused
476 */
477 float b_quant_offset;
478
479 /**
480 * error resilience {-1,0,1} higher values will detect more errors but may missdetect
481 * some more or less valid parts as errors
482 * encoding: unused
483 * decoding: set by user
484 */
1f6b6e50 485 int error_resilience;
ae72cda6 486
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487 /**
488 * obsolete, just here to keep ABI compatible (should be removed perhaps, dunno)
489 */
490 int *quant_store;
93a21abd 491
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492 /**
493 * QP store stride
494 * encoding: unused
495 * decoding: set by lavc
496 */
497 int qstride;
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498
499 /**
500 * buffer, where the next picture should be decoded into
501 * encoding: unused
502 * decoding: set by user in get_buffer_callback to a buffer into which the next part
503 * of the bitstream will be decoded, and set by lavc at end of frame to the
504 * next frame which needs to be displayed
505 */
93a21abd 506 uint8_t *dr_buffer[3];
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507
508 /**
509 * stride of the luminance part of the dr buffer
510 * encoding: unused
511 * decoding: set by user
512 */
93a21abd 513 int dr_stride;
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514
515 /**
516 * same behavior as dr_buffer, just for some private data of the user
517 * encoding: unused
518 * decoding: set by user in get_buffer_callback, and set by lavc at end of frame
519 */
93a21abd 520 void *dr_opaque_frame;
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521
522 /**
523 * called at the beginning of each frame to get a buffer for it
524 * encoding: unused
525 * decoding: set by user
526 */
d6db1c9c 527 int (*get_buffer_callback)(struct AVCodecContext *c, int width, int height, int pict_type);
0fd90455 528
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529 /**
530 * is 1 if the decoded stream contains b frames, 0 otherwise
531 * encoding: unused
532 * decoding: set by lavc
533 */
534 int has_b_frames;
535
536 /**
537 * stride of the chrominance part of the dr buffer
538 * encoding: unused
539 * decoding: set by user
540 */
0fd90455 541 int dr_uvstride;
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542
543 /**
544 * number of dr buffers
545 * encoding: unused
546 * decoding: set by user
547 */
0fd90455 548 int dr_ip_buffer_count;
b71901e6 549
bc8d1857 550 int block_align; /* used by some WAV based audio codecs */
ce980a95 551
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552 int parse_only; /* decoding only: if true, only parsing is done
553 (function avcodec_parse_frame()). The frame
554 data is returned. Only MPEG codecs support this now. */
ce980a95 555
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556 /**
557 * 0-> h263 quant 1-> mpeg quant
558 * encoding: set by user.
559 * decoding: unused
560 */
561 int mpeg_quant;
ce980a95 562
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563 /**
564 * pass1 encoding statistics output buffer
565 * encoding: set by lavc
566 * decoding: unused
567 */
ce980a95 568 char *stats_out; /* encoding statistics output buffer */
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569
570 /**
571 * pass2 encoding statistics input buffer.
572 * concatenated stuff from stats_out of pass1 should be placed here
573 * encoding: allocated/set/freed by user
574 * decoding: unused
575 */
576 char *stats_in;
577
578 /**
579 * ratecontrol qmin qmax limiting method
580 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
581 * encoding: set by user.
582 * decoding: unused
583 */
ce980a95 584 float rc_qsquish;
b71901e6 585
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586 float rc_qmod_amp;
587 int rc_qmod_freq;
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588
589 /**
590 * ratecontrol override, see RcOverride
591 * encoding: allocated/set/freed by user.
592 * decoding: unused
593 */
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594 RcOverride *rc_override;
595 int rc_override_count;
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596
597 /**
598 * rate control equation
599 * encoding: set by user
600 * decoding: unused
601 */
ce980a95 602 char *rc_eq;
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603
604 /**
605 * maximum bitrate
606 * encoding: set by user.
607 * decoding: unused
608 */
ce980a95 609 int rc_max_rate;
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610
611 /**
612 * minimum bitrate
613 * encoding: set by user.
614 * decoding: unused
615 */
ce980a95 616 int rc_min_rate;
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617
618 /**
619 * decoder bitstream buffer size
620 * encoding: set by user.
621 * decoding: unused
622 */
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623 int rc_buffer_size;
624 float rc_buffer_aggressivity;
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625
626 /**
627 * qscale factor between p and i frames
628 * encoding: set by user.
629 * decoding: unused
630 */
631 float i_quant_factor;
632
633 /**
634 * qscale offset between p and i frames
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635 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
636 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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637 * encoding: set by user.
638 * decoding: unused
639 */
640 float i_quant_offset;
641
642 /**
643 * initial complexity for pass1 ratecontrol
644 * encoding: set by user.
645 * decoding: unused
646 */
ce980a95 647 float rc_initial_cplx;
917e06c8 648
b71901e6 649 /**
5d3cea3a 650 * Obsolete, will be removed
b71901e6 651 */
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652 int aspected_width;
653 int aspected_height;
654
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655 /**
656 * dct algorithm, see FF_DCT_* below
657 * encoding: set by user
658 * decoding: unused
659 */
28db7fce 660 int dct_algo;
c7e07931 661#define FF_DCT_AUTO 0
28db7fce 662#define FF_DCT_FASTINT 1
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663#define FF_DCT_INT 2
664#define FF_DCT_MMX 3
665#define FF_DCT_MLIB 4
05c4072b 666#define FF_DCT_ALTIVEC 5
28db7fce 667
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668 /**
669 * presentation timestamp in micro seconds (time when frame should be shown to user)
670 * if 0 then the frame_rate will be used as reference
671 * encoding: set by user
672 * decoding; set by lavc
673 */
674 long long int pts;
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675
676 /**
677 * luminance masking (0-> disabled)
678 * encoding: set by user
679 * decoding: unused
680 */
681 float lumi_masking;
682
683 /**
684 * temporary complexity masking (0-> disabled)
685 * encoding: set by user
686 * decoding: unused
687 */
688 float temporal_cplx_masking;
689
690 /**
691 * spatial complexity masking (0-> disabled)
692 * encoding: set by user
693 * decoding: unused
694 */
695 float spatial_cplx_masking;
696
697 /**
698 * p block masking (0-> disabled)
699 * encoding: set by user
700 * decoding: unused
701 */
702 float p_masking;
15415af4 703
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704 /**
705 * darkness masking (0-> disabled)
706 * encoding: set by user
707 * decoding: unused
708 */
709 float dark_masking;
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710
711 /**
712 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
713 * this is used to workaround some encoder bugs
714 * encoding: unused
202ef8b8 715 * decoding: set by user, will be converted to upper case by lavc during init
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716 */
717 int fourcc;
5e746b99 718
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719 /**
720 * idct algorithm, see FF_IDCT_* below
721 * encoding: set by user
722 * decoding: set by user
723 */
724 int idct_algo;
725#define FF_IDCT_AUTO 0
726#define FF_IDCT_INT 1
727#define FF_IDCT_SIMPLE 2
728#define FF_IDCT_SIMPLEMMX 3
729#define FF_IDCT_LIBMPEG2MMX 4
730#define FF_IDCT_PS2 5
731#define FF_IDCT_MLIB 6
732#define FF_IDCT_ARM 7
05c4072b 733#define FF_IDCT_ALTIVEC 8
2ad1516a 734
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735 /**
736 * slice count
737 * encoding: set by lavc
738 * decoding: set by user (or 0)
739 */
740 int slice_count;
741 /**
742 * slice offsets in the frame in bytes
743 * encoding: set/allocated by lavc
744 * decoding: set/allocated by user (or NULL)
745 */
746 int *slice_offset;
747
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748 /**
749 * error concealment flags
750 * encoding: unused
751 * decoding: set by user
752 */
753 int error_concealment;
754#define FF_EC_GUESS_MVS 1
755#define FF_EC_DEBLOCK 2
756
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757 /**
758 * QP table of the currently decoded frame
759 * encoding; unused
760 * decoding: set by lavc
761 */
8350df97 762 int8_t *current_qscale_table;
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763 /**
764 * QP table of the currently displayed frame
765 * encoding; unused
766 * decoding: set by lavc
767 */
8350df97 768 int8_t *display_qscale_table;
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769 /**
770 * force specific pict_type.
771 * encoding; set by user (I/P/B_TYPE)
772 * decoding: unused
773 */
774 int force_type;
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775 /**
776 * dsp_mask could be used to disable unwanted
777 * CPU features (i.e. MMX, SSE. ...)
778 */
779 unsigned dsp_mask;
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780
781 /**
782 * bits per sample/pixel from the demuxer (needed for huffyuv)
783 * encoding; set by lavc
784 * decoding: set by user
785 */
786 int bits_per_sample;
787
788 /**
789 * prediction method (needed for huffyuv)
790 * encoding; set by user
791 * decoding: unused
792 */
793 int prediction_method;
794#define FF_PRED_LEFT 0
795#define FF_PRED_PLANE 1
796#define FF_PRED_MEDIAN 2
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797
798 /**
799 * aspect ratio. (0 if unknown)
800 * encoding: set by user.
801 * decoding: set by lavc.
802 */
803 float aspect_ratio;
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804} AVCodecContext;
805
806typedef struct AVCodec {
18f77016 807 const char *name;
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808 int type;
809 int id;
810 int priv_data_size;
811 int (*init)(AVCodecContext *);
812 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
813 int (*close)(AVCodecContext *);
0fd90455 814 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
de6d9b64 815 UINT8 *buf, int buf_size);
bf89e6b1 816 int capabilities;
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817 struct AVCodec *next;
818} AVCodec;
819
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820/**
821 * four components are given, that's all.
822 * the last component is alpha
823 */
de6d9b64 824typedef struct AVPicture {
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825 UINT8 *data[4];
826 int linesize[4];
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827} AVPicture;
828
829extern AVCodec ac3_encoder;
830extern AVCodec mp2_encoder;
9d36bdc9 831extern AVCodec mp3lame_encoder;
81e0d0b4 832extern AVCodec oggvorbis_encoder;
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833extern AVCodec mpeg1video_encoder;
834extern AVCodec h263_encoder;
835extern AVCodec h263p_encoder;
836extern AVCodec rv10_encoder;
837extern AVCodec mjpeg_encoder;
bf89e6b1 838extern AVCodec mpeg4_encoder;
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839extern AVCodec msmpeg4v1_encoder;
840extern AVCodec msmpeg4v2_encoder;
841extern AVCodec msmpeg4v3_encoder;
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842extern AVCodec wmv1_encoder;
843extern AVCodec wmv2_encoder;
11f18faf 844extern AVCodec huffyuv_encoder;
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845
846extern AVCodec h263_decoder;
bf89e6b1 847extern AVCodec mpeg4_decoder;
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848extern AVCodec msmpeg4v1_decoder;
849extern AVCodec msmpeg4v2_decoder;
850extern AVCodec msmpeg4v3_decoder;
e1a9dbff 851extern AVCodec wmv1_decoder;
0151a6f5 852extern AVCodec wmv2_decoder;
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853extern AVCodec mpeg_decoder;
854extern AVCodec h263i_decoder;
855extern AVCodec rv10_decoder;
be8ffec9 856extern AVCodec svq1_decoder;
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857extern AVCodec dvvideo_decoder;
858extern AVCodec dvaudio_decoder;
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859extern AVCodec wmav1_decoder;
860extern AVCodec wmav2_decoder;
4e66ab3b 861extern AVCodec mjpeg_decoder;
b135d9fb 862extern AVCodec mjpegb_decoder;
4b1f4f23 863extern AVCodec mp2_decoder;
a96b68b7 864extern AVCodec mp3_decoder;
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865extern AVCodec mace3_decoder;
866extern AVCodec mace6_decoder;
11f18faf 867extern AVCodec huffyuv_decoder;
3aca208a 868extern AVCodec oggvorbis_decoder;
de6d9b64 869
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870/* pcm codecs */
871#define PCM_CODEC(id, name) \
872extern AVCodec name ## _decoder; \
f11d3f23 873extern AVCodec name ## _encoder
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874
875PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
876PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
877PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
878PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
879PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
880PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
881PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
882PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
883
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884/* adpcm codecs */
885
886PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
887PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
888PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
889
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890#undef PCM_CODEC
891
892/* dummy raw video codec */
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893extern AVCodec rawvideo_codec;
894
895/* the following codecs use external GPL libs */
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896extern AVCodec ac3_decoder;
897
898/* resample.c */
899
900struct ReSampleContext;
901
902typedef struct ReSampleContext ReSampleContext;
903
904ReSampleContext *audio_resample_init(int output_channels, int input_channels,
905 int output_rate, int input_rate);
906int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
907void audio_resample_close(ReSampleContext *s);
908
909/* YUV420 format is assumed ! */
910
911struct ImgReSampleContext;
912
913typedef struct ImgReSampleContext ImgReSampleContext;
914
915ImgReSampleContext *img_resample_init(int output_width, int output_height,
916 int input_width, int input_height);
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917
918ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
919 int iwidth, int iheight,
920 int topBand, int bottomBand,
921 int leftBand, int rightBand);
922
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923void img_resample(ImgReSampleContext *s,
924 AVPicture *output, AVPicture *input);
925
926void img_resample_close(ImgReSampleContext *s);
927
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928void avpicture_fill(AVPicture *picture, UINT8 *ptr,
929 int pix_fmt, int width, int height);
930int avpicture_get_size(int pix_fmt, int width, int height);
931
932/* convert among pixel formats */
933int img_convert(AVPicture *dst, int dst_pix_fmt,
934 AVPicture *src, int pix_fmt,
935 int width, int height);
936
937/* deinterlace a picture */
938int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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939 int pix_fmt, int width, int height);
940
941/* external high level API */
942
943extern AVCodec *first_avcodec;
944
156e5023 945/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 946unsigned avcodec_version(void);
8bceb6af 947/* returns LIBAVCODEC_BUILD constant */
51a49663 948unsigned avcodec_build(void);
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949void avcodec_init(void);
950
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951void avcodec_set_bit_exact(void);
952
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953void register_avcodec(AVCodec *format);
954AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 955AVCodec *avcodec_find_encoder_by_name(const char *name);
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956AVCodec *avcodec_find_decoder(enum CodecID id);
957AVCodec *avcodec_find_decoder_by_name(const char *name);
958void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
959
7ffbb60e 960AVCodecContext *avcodec_alloc_context(void);
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961int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
962int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
963 int *frame_size_ptr,
964 UINT8 *buf, int buf_size);
965int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
966 int *got_picture_ptr,
967 UINT8 *buf, int buf_size);
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968int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
969 int *data_size_ptr,
970 UINT8 *buf, int buf_size);
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971int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
972 const short *samples);
973int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
974 const AVPicture *pict);
975
976int avcodec_close(AVCodecContext *avctx);
977
978void avcodec_register_all(void);
a96b68b7 979
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980void avcodec_flush_buffers(AVCodecContext *avctx);
981
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982/**
983 * Interface for 0.5.0 version
984 *
985 * do not even think about it's usage for this moment
986 */
987
988typedef struct {
989 // compressed size used from given memory buffer
990 int size;
991 /// I/P/B frame type
992 int frame_type;
993} avc_enc_result_t;
994
995/**
996 * Commands
997 * order can't be changed - once it was defined
998 */
999typedef enum {
1000 // general commands
1001 AVC_OPEN_BY_NAME = 0xACA000,
1002 AVC_OPEN_BY_CODEC_ID,
1003 AVC_OPEN_BY_FOURCC,
1004 AVC_CLOSE,
1005
1006 AVC_FLUSH,
1007 // pin - struct { uint8_t* src, uint_t src_size }
1008 // pout - struct { AVPicture* img, consumed_bytes,
1009 AVC_DECODE,
1010 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1011 // pout - uint_t used_from_dest_size
1012 AVC_ENCODE,
1013
1014 // query/get video commands
1015 AVC_GET_VERSION = 0xACB000,
1016 AVC_GET_WIDTH,
1017 AVC_GET_HEIGHT,
1018 AVC_GET_DELAY,
1019 AVC_GET_QUANT_TABLE,
1020 // ...
1021
1022 // query/get audio commands
1023 AVC_GET_FRAME_SIZE = 0xABC000,
1024
1025 // maybe define some simple structure which
1026 // might be passed to the user - but they can't
1027 // contain any codec specific parts and these
1028 // calls are usualy necessary only few times
1029
1030 // set video commands
1031 AVC_SET_WIDTH = 0xACD000,
1032 AVC_SET_HEIGHT,
1033
1034 // set video encoding commands
1035 AVC_SET_FRAME_RATE = 0xACD800,
1036 AVC_SET_QUALITY,
1037 AVC_SET_HURRY_UP,
1038
1039 // set audio commands
1040 AVC_SET_SAMPLE_RATE = 0xACE000,
1041 AVC_SET_CHANNELS,
1042
1043} avc_cmd_t;
1044
1045/**
1046 * \param handle allocated private structure by libavcodec
1047 * for initialization pass NULL - will be returned pout
1048 * user is supposed to know nothing about its structure
1049 * \param cmd type of operation to be performed
1050 * \param pint input parameter
1051 * \param pout output parameter
1052 *
1053 * \returns command status - eventually for query command it might return
1054 * integer resulting value
1055 */
1056int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1057
544eb99c 1058/* memory */
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1059void *av_malloc(unsigned int size);
1060void *av_mallocz(unsigned int size);
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1061void av_free(void *ptr);
1062void __av_freep(void **ptr);
1063#define av_freep(p) __av_freep((void **)(p))
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1064/* for static data only */
1065/* call av_free_static to release all staticaly allocated tables */
1066void av_free_static();
1067void *__av_mallocz_static(void** location, unsigned int size);
1068#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
544eb99c 1069
a96b68b7 1070#endif /* AVCODEC_H */