added handling of URL redirectors (needed for RTSP streaming client)
[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 4639
9#define LIBAVCODEC_BUILD_STR "4639"
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,
11f18faf 37 CODEC_ID_HUFFYUV,
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38
39 /* various pcm "codecs" */
40 CODEC_ID_PCM_S16LE,
41 CODEC_ID_PCM_S16BE,
42 CODEC_ID_PCM_U16LE,
43 CODEC_ID_PCM_U16BE,
44 CODEC_ID_PCM_S8,
45 CODEC_ID_PCM_U8,
46 CODEC_ID_PCM_MULAW,
47 CODEC_ID_PCM_ALAW,
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48
49 /* various adpcm codecs */
50 CODEC_ID_ADPCM_IMA_QT,
51 CODEC_ID_ADPCM_IMA_WAV,
52 CODEC_ID_ADPCM_MS,
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53};
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,
e9feea59 71 PIX_FMT_YUV410P,
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72 PIX_FMT_YUV411P,
73 PIX_FMT_RGB565,
74 PIX_FMT_RGB555,
75// PIX_FMT_RGB5551,
76 PIX_FMT_BGR565,
77 PIX_FMT_BGR555,
78// PIX_FMT_GBR565,
79// PIX_FMT_GBR555
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80};
81
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82/* currently unused, may be used if 24/32 bits samples ever supported */
83enum SampleFormat {
84 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
85};
86
de6d9b64 87/* in bytes */
bc8d1857 88#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 89
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90/**
91 * Required number of zero bytes at the end of the input bitstream for decoding.
92 * to avoid overreading (and possibly segfaulting)
93 */
94#define FF_INPUT_BUFFER_PADDING_SIZE 8
95
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96/* motion estimation type, EPZS by default */
97enum Motion_Est_ID {
101bea5f 98 ME_ZERO = 1,
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99 ME_FULL,
100 ME_LOG,
101 ME_PHODS,
102 ME_EPZS,
103 ME_X1
104};
105
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106typedef struct RcOverride{
107 int start_frame;
108 int end_frame;
109 int qscale; // if this is 0 then quality_factor will be used instead
110 float quality_factor;
111} RcOverride;
112
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113/* only for ME compatiblity with old apps */
114extern int motion_estimation_method;
115
e4986da9 116/* ME algos sorted by quality */
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117static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
118 ME_X1, ME_EPZS, ME_FULL };
de6d9b64 119
28db7fce 120
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121#define FF_MAX_B_FRAMES 4
122
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123/* encoding support
124 these flags can be passed in AVCodecContext.flags before initing
125 Note: note not everything is supported yet
126*/
de6d9b64 127
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128#define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
129#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
130#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
131#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
132#define CODEC_FLAG_GMC 0x0020 /* use GMC */
b71901e6 133#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
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134/* parent program gurantees that the input for b-frame containing streams is not written to
135 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 136#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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137#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
138#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
e84c31dc 139#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
b71901e6 140#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
93a21abd 141#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
b71901e6 142#define CODEC_FLAG_DR1 0x8000 /* direct renderig type 1 (store internal frames in external buffers) */
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143#define CODEC_FLAG_TRUNCATED 0x00010000 /* input bitstream might be truncated at a random location instead
144 of only at frame boundaries */
c5d309f2 145#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
fcb48651 146#define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
9f9c3229 147#define CODEC_FLAG_LOW_DELAY 0x00080000 /* force low delay / will fail on b frames */
c5d309f2 148
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149/* codec capabilities */
150
b71901e6 151#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
93a21abd 152#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
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153/* if 'parse_only' field is true, then avcodec_parse_frame() can be
154 used */
155#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 156#define CODEC_CAP_TRUNCATED 0x0008
bf89e6b1 157
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158#define FRAME_RATE_BASE 10000
159
160typedef struct AVCodecContext {
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161 /**
162 * the average bitrate
163 * encoding: set by user. unused for constant quantizer encoding
164 * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
165 */
de6d9b64 166 int bit_rate;
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167
168 /**
169 * number of bits the bitstream is allowed to diverge from the reference
170 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
171 * encoding: set by user. unused for constant quantizer encoding
172 * decoding: unused
173 */
174 int bit_rate_tolerance;
175
176 /**
177 * CODEC_FLAG_*
178 * encoding: set by user.
179 * decoding: set by user.
180 */
de6d9b64 181 int flags;
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182
183 /**
184 * some codecs needs additionnal format info. It is stored here
185 * encoding: set by user.
186 * decoding: set by lavc. (FIXME is this ok?)
187 */
188 int sub_id;
189
190 /**
191 * motion estimation algorithm used for video coding
192 * encoding: set by user.
193 * decoding: unused
194 */
195 int me_method;
196
197 /**
198 * some codecs need / can use extra-data like huffman tables
199 * mjpeg: huffman tables
200 * rv10: additional flags
b704e742 201 * mpeg4: global headers (they can be in the bitstream or here)
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202 * encoding: set/allocated/freed by lavc.
203 * decoding: set/allocated/freed by user.
b71901e6 204 */
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205 void *extradata;
206 int extradata_size;
207
de6d9b64 208 /* video only */
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209 /**
210 * frames per sec multiplied by FRAME_RATE_BASE
211 * for variable fps this is the precission, so if the timestamps
212 * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
213 * encoding: set by user
214 * decoding: set by lavc. 0 or the frame_rate if available
215 */
216 int frame_rate;
217
218 /**
219 * encoding: set by user.
220 * decoding: set by user, some codecs might override / change it during playback
221 */
de6d9b64 222 int width, height;
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223
224 /**
225 * encoding: set by user. 0 if not known
226 * decoding: set by lavc. 0 if not known
227 */
11ce8834 228 int aspect_ratio_info;
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229#define FF_ASPECT_SQUARE 1
230#define FF_ASPECT_4_3_625 2
231#define FF_ASPECT_4_3_525 3
232#define FF_ASPECT_16_9_625 4
233#define FF_ASPECT_16_9_525 5
e769f053 234#define FF_ASPECT_EXTENDED 15
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235
236 /**
237 * the number of pictures in a group of pitures, or 0 for intra_only
238 * encoding: set by user.
239 * decoding: unused
240 */
241 int gop_size;
242
243 /**
244 * pixel format, see PIX_FMT_xxx
245 * encoding: unused
246 * decoding: set by lavc.
247 */
248 enum PixelFormat pix_fmt;
249
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250 int repeat_pict; /* when decoding, this signal how much the picture */
251 /* must be delayed. */
252 /* extra_delay = (repeat_pict / 2) * (1/fps) */
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253
254 /**
255 * if non NULL, 'draw_horiz_band' is called by the libavcodec
256 * decoder to draw an horizontal band. It improve cache usage. Not
257 * all codecs can do that. You must check the codec capabilities
258 * before
259 * encoding: unused
260 * decoding: set by user.
261 */
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262 void (*draw_horiz_band)(struct AVCodecContext *s,
263 UINT8 **src_ptr, int linesize,
264 int y, int width, int height);
265
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266 /* audio only */
267 int sample_rate; /* samples per sec */
268 int channels;
a96b68b7 269 int sample_fmt; /* sample format, currenly unused */
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270
271 /* the following data should not be initialized */
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272 int frame_size; /* in samples, initialized when calling 'init' */
273 int frame_number; /* audio or video frame number */
274 int real_pict_num; /* returns the real picture number of
275 previous encoded frame */
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276
277 /**
278 * 1 -> keyframe, 0-> not
279 * encoding: set by lavc (for the outputed bitstream, not the input frame)
280 * decoding: set by lavc (for the decoded bitstream, not the displayed frame)
281 */
282 int key_frame;
283
284 /**
285 * picture type of the previous en/decoded frame, see ?_TYPE below
286 * encoding: set by lavc (for the outputed bitstream, not the input frame)
287 * decoding: set by lavc (for the decoded bitstream, not the displayed frame)
288 */
289 int pict_type;
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290/* FIXME: these should have FF_ */
291#define I_TYPE 1 // Intra
292#define P_TYPE 2 // Predicted
293#define B_TYPE 3 // Bi-dir predicted
294#define S_TYPE 4 // S(GMC)-VOP MPEG4
295
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296 /**
297 * number of frames the decoded output will be delayed relative to
298 * the encoded input
299 * encoding: set by lavc.
300 * decoding: unused
301 */
302 int delay;
303
304 /**
305 * mbskip_table[mb]=1 if MB didnt change, is only valid for I/P frames
306 * stride= mb_width = (width+15)>>4 (FIXME export stride?)
307 * encoding: unused
308 * decoding: set by lavc
309 */
310 uint8_t *mbskip_table;
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311
312 /* encoding parameters */
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313 /**
314 * quality (between 1 (good) and 31 (bad))
315 * encoding: set by user if CODEC_FLAG_QSCALE is set otherwise set by lavc
316 * decoding: set by lavc
317 */
de6d9b64 318 int quality; /* quality of the previous encoded frame
c5d309f2 319
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320 this is allso used to set the quality in vbr mode
321 and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
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322 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
323 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
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324
325 /**
326 * minimum quantizer
327 * encoding: set by user.
328 * decoding: unused
329 */
330 int qmin;
331
332 /**
333 * maximum quantizer
334 * encoding: set by user.
335 * decoding: unused
336 */
337 int qmax;
338
339 /**
340 * maximum quantizer difference etween frames
341 * encoding: set by user.
342 * decoding: unused
343 */
344 int max_qdiff;
345
346 /**
347 * maximum number of b frames between non b frames
348 * note: the output will be delayed by max_b_frames+1 relative to the input
349 * encoding: set by user.
350 * decoding: unused
351 */
352 int max_b_frames;
353
354 /**
355 * qscale factor between ip and b frames
356 * encoding: set by user.
357 * decoding: unused
358 */
359 float b_quant_factor;
360
361 /** obsolete FIXME remove */
362 int rc_strategy;
8b4c7dbc 363 int b_frame_strategy;
9dbcbd92 364
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365 /**
366 * encoding: unused
347ae22e 367 * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
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368 */
369 int hurry_up;
2417652e 370
de6d9b64 371 struct AVCodec *codec;
b71901e6 372
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373 void *priv_data;
374
644d98a4 375 /* The following data is for RTP friendly coding */
1f6b6e50 376 /* By now only H.263/H.263+/MPEG4 coder honours this */
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377 int rtp_mode; /* 1 for activate RTP friendly-mode */
378 /* highers numbers represent more error-prone */
379 /* enviroments, by now just "1" exist */
380
381 int rtp_payload_size; /* The size of the RTP payload, the coder will */
382 /* do it's best to deliver a chunk with size */
383 /* below rtp_payload_size, the chunk will start */
384 /* with a start code on some codecs like H.263 */
385 /* This doesn't take account of any particular */
386 /* headers inside the transmited RTP payload */
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387
388
389 /* The RTP callcack: This function is called */
390 /* every time the encoder as a packet to send */
391 /* Depends on the encoder if the data starts */
392 /* with a Start Code (it should) H.263 does */
393 void (*rtp_callback)(void *data, int size, int packet_number);
394
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395 /**
396 * if you set get_psnr to 1 then after encoding you will have the
397 * PSNR on psnr_y/cb/cr
398 * encoding: set by user (1-> on, 0-> off)
399 * decoding: unused
400 */
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401 int get_psnr;
402 float psnr_y;
403 float psnr_cb;
404 float psnr_cr;
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405
406 /* statistics, used for 2-pass encoding */
407 int mv_bits;
408 int header_bits;
409 int i_tex_bits;
410 int p_tex_bits;
411 int i_count;
412 int p_count;
413 int skip_count;
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414 int misc_bits;
415
416 /**
417 * number of bits used for the previously encoded frame
418 * encoding: set by lavc
8350df97 419 * decoding: - for audio - bits_per_sample
b71901e6 420 */
098eefe1 421 int frame_bits;
644d98a4 422
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423 /**
424 * private data of the user, can be used to carry app specific stuff
425 * encoding: set by user
426 * decoding: set by user
427 */
428 void *opaque;
429
de6d9b64 430 char codec_name[32];
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431 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
432 enum CodecID codec_id; /* see CODEC_ID_xxx */
de6d9b64 433 unsigned int codec_tag; /* codec tag, only used if unknown codec */
92ba5ffb 434
b71901e6 435 /**
4d2858de 436 * workaround bugs in encoders which sometimes cannot be detected automatically
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437 * encoding: unused
438 * decoding: set by user
439 */
440 int workaround_bugs;
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441#define FF_BUG_AUTODETECT 1 //autodetection
442#define FF_BUG_OLD_MSMPEG4 2
443#define FF_BUG_XVID_ILACE 4
444#define FF_BUG_UMP4 8
445#define FF_BUG_NO_PADDING 16
446#define FF_BUG_AC_VLC 32
03e93d35 447#define FF_BUG_QPEL_CHROMA 64
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448//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
449
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450 /**
451 * encoding: set by user
452 * decoding: unused
453 */
1f6b6e50 454 int luma_elim_threshold;
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455
456 /**
457 * encoding: set by user
458 * decoding: unused
459 */
1f6b6e50 460 int chroma_elim_threshold;
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461
462 /**
463 * strictly follow the std (MPEG4, ...)
464 * encoding: set by user
465 * decoding: unused
466 */
467 int strict_std_compliance;
468
469 /**
470 * qscale offset between ip and b frames
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471 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
472 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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473 * encoding: set by user.
474 * decoding: unused
475 */
476 float b_quant_offset;
477
478 /**
479 * error resilience {-1,0,1} higher values will detect more errors but may missdetect
480 * some more or less valid parts as errors
481 * encoding: unused
482 * decoding: set by user
483 */
1f6b6e50 484 int error_resilience;
ae72cda6 485
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486 /**
487 * obsolete, just here to keep ABI compatible (should be removed perhaps, dunno)
488 */
489 int *quant_store;
93a21abd 490
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491 /**
492 * QP store stride
493 * encoding: unused
494 * decoding: set by lavc
495 */
496 int qstride;
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497
498 /**
499 * buffer, where the next picture should be decoded into
500 * encoding: unused
501 * decoding: set by user in get_buffer_callback to a buffer into which the next part
502 * of the bitstream will be decoded, and set by lavc at end of frame to the
503 * next frame which needs to be displayed
504 */
93a21abd 505 uint8_t *dr_buffer[3];
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506
507 /**
508 * stride of the luminance part of the dr buffer
509 * encoding: unused
510 * decoding: set by user
511 */
93a21abd 512 int dr_stride;
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513
514 /**
515 * same behavior as dr_buffer, just for some private data of the user
516 * encoding: unused
517 * decoding: set by user in get_buffer_callback, and set by lavc at end of frame
518 */
93a21abd 519 void *dr_opaque_frame;
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520
521 /**
522 * called at the beginning of each frame to get a buffer for it
523 * encoding: unused
524 * decoding: set by user
525 */
d6db1c9c 526 int (*get_buffer_callback)(struct AVCodecContext *c, int width, int height, int pict_type);
0fd90455 527
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528 /**
529 * is 1 if the decoded stream contains b frames, 0 otherwise
530 * encoding: unused
531 * decoding: set by lavc
532 */
533 int has_b_frames;
534
535 /**
536 * stride of the chrominance part of the dr buffer
537 * encoding: unused
538 * decoding: set by user
539 */
0fd90455 540 int dr_uvstride;
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541
542 /**
543 * number of dr buffers
544 * encoding: unused
545 * decoding: set by user
546 */
0fd90455 547 int dr_ip_buffer_count;
b71901e6 548
bc8d1857 549 int block_align; /* used by some WAV based audio codecs */
ce980a95 550
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551 int parse_only; /* decoding only: if true, only parsing is done
552 (function avcodec_parse_frame()). The frame
553 data is returned. Only MPEG codecs support this now. */
ce980a95 554
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555 /**
556 * 0-> h263 quant 1-> mpeg quant
557 * encoding: set by user.
558 * decoding: unused
559 */
560 int mpeg_quant;
ce980a95 561
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562 /**
563 * pass1 encoding statistics output buffer
564 * encoding: set by lavc
565 * decoding: unused
566 */
ce980a95 567 char *stats_out; /* encoding statistics output buffer */
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568
569 /**
570 * pass2 encoding statistics input buffer.
571 * concatenated stuff from stats_out of pass1 should be placed here
572 * encoding: allocated/set/freed by user
573 * decoding: unused
574 */
575 char *stats_in;
576
577 /**
578 * ratecontrol qmin qmax limiting method
579 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
580 * encoding: set by user.
581 * decoding: unused
582 */
ce980a95 583 float rc_qsquish;
b71901e6 584
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585 float rc_qmod_amp;
586 int rc_qmod_freq;
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587
588 /**
589 * ratecontrol override, see RcOverride
590 * encoding: allocated/set/freed by user.
591 * decoding: unused
592 */
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593 RcOverride *rc_override;
594 int rc_override_count;
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595
596 /**
597 * rate control equation
598 * encoding: set by user
599 * decoding: unused
600 */
ce980a95 601 char *rc_eq;
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602
603 /**
604 * maximum bitrate
605 * encoding: set by user.
606 * decoding: unused
607 */
ce980a95 608 int rc_max_rate;
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609
610 /**
611 * minimum bitrate
612 * encoding: set by user.
613 * decoding: unused
614 */
ce980a95 615 int rc_min_rate;
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616
617 /**
618 * decoder bitstream buffer size
619 * encoding: set by user.
620 * decoding: unused
621 */
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622 int rc_buffer_size;
623 float rc_buffer_aggressivity;
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624
625 /**
626 * qscale factor between p and i frames
627 * encoding: set by user.
628 * decoding: unused
629 */
630 float i_quant_factor;
631
632 /**
633 * qscale offset between p and i frames
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634 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
635 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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636 * encoding: set by user.
637 * decoding: unused
638 */
639 float i_quant_offset;
640
641 /**
642 * initial complexity for pass1 ratecontrol
643 * encoding: set by user.
644 * decoding: unused
645 */
ce980a95 646 float rc_initial_cplx;
917e06c8 647
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648 /**
649 * custom aspect ratio, used if aspect_info==FF_ASPECT_EXTENDED
650 * encoding: set by user.
651 * decoding: set by lavc.
652 */
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653 int aspected_width;
654 int aspected_height;
655
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656 /**
657 * dct algorithm, see FF_DCT_* below
658 * encoding: set by user
659 * decoding: unused
660 */
28db7fce 661 int dct_algo;
c7e07931 662#define FF_DCT_AUTO 0
28db7fce 663#define FF_DCT_FASTINT 1
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664#define FF_DCT_INT 2
665#define FF_DCT_MMX 3
666#define FF_DCT_MLIB 4
05c4072b 667#define FF_DCT_ALTIVEC 5
28db7fce 668
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669 /**
670 * presentation timestamp in micro seconds (time when frame should be shown to user)
671 * if 0 then the frame_rate will be used as reference
672 * encoding: set by user
673 * decoding; set by lavc
674 */
675 long long int pts;
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676
677 /**
678 * luminance masking (0-> disabled)
679 * encoding: set by user
680 * decoding: unused
681 */
682 float lumi_masking;
683
684 /**
685 * temporary complexity masking (0-> disabled)
686 * encoding: set by user
687 * decoding: unused
688 */
689 float temporal_cplx_masking;
690
691 /**
692 * spatial complexity masking (0-> disabled)
693 * encoding: set by user
694 * decoding: unused
695 */
696 float spatial_cplx_masking;
697
698 /**
699 * p block masking (0-> disabled)
700 * encoding: set by user
701 * decoding: unused
702 */
703 float p_masking;
15415af4 704
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705 /**
706 * darkness masking (0-> disabled)
707 * encoding: set by user
708 * decoding: unused
709 */
710 float dark_masking;
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711
712 /**
713 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
714 * this is used to workaround some encoder bugs
715 * encoding: unused
202ef8b8 716 * decoding: set by user, will be converted to upper case by lavc during init
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717 */
718 int fourcc;
5e746b99 719
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720 /**
721 * idct algorithm, see FF_IDCT_* below
722 * encoding: set by user
723 * decoding: set by user
724 */
725 int idct_algo;
726#define FF_IDCT_AUTO 0
727#define FF_IDCT_INT 1
728#define FF_IDCT_SIMPLE 2
729#define FF_IDCT_SIMPLEMMX 3
730#define FF_IDCT_LIBMPEG2MMX 4
731#define FF_IDCT_PS2 5
732#define FF_IDCT_MLIB 6
733#define FF_IDCT_ARM 7
05c4072b 734#define FF_IDCT_ALTIVEC 8
2ad1516a 735
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736 /**
737 * slice count
738 * encoding: set by lavc
739 * decoding: set by user (or 0)
740 */
741 int slice_count;
742 /**
743 * slice offsets in the frame in bytes
744 * encoding: set/allocated by lavc
745 * decoding: set/allocated by user (or NULL)
746 */
747 int *slice_offset;
748
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749 /**
750 * error concealment flags
751 * encoding: unused
752 * decoding: set by user
753 */
754 int error_concealment;
755#define FF_EC_GUESS_MVS 1
756#define FF_EC_DEBLOCK 2
757
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758 /**
759 * QP table of the currently decoded frame
760 * encoding; unused
761 * decoding: set by lavc
762 */
8350df97 763 int8_t *current_qscale_table;
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764 /**
765 * QP table of the currently displayed frame
766 * encoding; unused
767 * decoding: set by lavc
768 */
8350df97 769 int8_t *display_qscale_table;
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770 /**
771 * force specific pict_type.
772 * encoding; set by user (I/P/B_TYPE)
773 * decoding: unused
774 */
775 int force_type;
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776 /**
777 * dsp_mask could be used to disable unwanted
778 * CPU features (i.e. MMX, SSE. ...)
779 */
780 unsigned dsp_mask;
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781
782 /**
783 * bits per sample/pixel from the demuxer (needed for huffyuv)
784 * encoding; set by lavc
785 * decoding: set by user
786 */
787 int bits_per_sample;
788
789 /**
790 * prediction method (needed for huffyuv)
791 * encoding; set by user
792 * decoding: unused
793 */
794 int prediction_method;
795#define FF_PRED_LEFT 0
796#define FF_PRED_PLANE 1
797#define FF_PRED_MEDIAN 2
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798} AVCodecContext;
799
800typedef struct AVCodec {
18f77016 801 const char *name;
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802 int type;
803 int id;
804 int priv_data_size;
805 int (*init)(AVCodecContext *);
806 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
807 int (*close)(AVCodecContext *);
0fd90455 808 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
de6d9b64 809 UINT8 *buf, int buf_size);
bf89e6b1 810 int capabilities;
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811 struct AVCodec *next;
812} AVCodec;
813
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814/**
815 * four components are given, that's all.
816 * the last component is alpha
817 */
de6d9b64 818typedef struct AVPicture {
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819 UINT8 *data[4];
820 int linesize[4];
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821} AVPicture;
822
823extern AVCodec ac3_encoder;
824extern AVCodec mp2_encoder;
9d36bdc9 825extern AVCodec mp3lame_encoder;
81e0d0b4 826extern AVCodec oggvorbis_encoder;
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827extern AVCodec mpeg1video_encoder;
828extern AVCodec h263_encoder;
829extern AVCodec h263p_encoder;
830extern AVCodec rv10_encoder;
831extern AVCodec mjpeg_encoder;
bf89e6b1 832extern AVCodec mpeg4_encoder;
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833extern AVCodec msmpeg4v1_encoder;
834extern AVCodec msmpeg4v2_encoder;
835extern AVCodec msmpeg4v3_encoder;
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836extern AVCodec wmv1_encoder;
837extern AVCodec wmv2_encoder;
11f18faf 838extern AVCodec huffyuv_encoder;
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839
840extern AVCodec h263_decoder;
bf89e6b1 841extern AVCodec mpeg4_decoder;
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842extern AVCodec msmpeg4v1_decoder;
843extern AVCodec msmpeg4v2_decoder;
844extern AVCodec msmpeg4v3_decoder;
e1a9dbff 845extern AVCodec wmv1_decoder;
0151a6f5 846extern AVCodec wmv2_decoder;
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847extern AVCodec mpeg_decoder;
848extern AVCodec h263i_decoder;
849extern AVCodec rv10_decoder;
be8ffec9 850extern AVCodec svq1_decoder;
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851extern AVCodec dvvideo_decoder;
852extern AVCodec dvaudio_decoder;
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853extern AVCodec wmav1_decoder;
854extern AVCodec wmav2_decoder;
4e66ab3b 855extern AVCodec mjpeg_decoder;
4b1f4f23 856extern AVCodec mp2_decoder;
a96b68b7 857extern AVCodec mp3_decoder;
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858extern AVCodec mace3_decoder;
859extern AVCodec mace6_decoder;
11f18faf 860extern AVCodec huffyuv_decoder;
de6d9b64 861
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862/* pcm codecs */
863#define PCM_CODEC(id, name) \
864extern AVCodec name ## _decoder; \
f11d3f23 865extern AVCodec name ## _encoder
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866
867PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
868PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
869PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
870PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
871PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
872PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
873PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
874PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
875
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876/* adpcm codecs */
877
878PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
879PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
880PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
881
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882#undef PCM_CODEC
883
884/* dummy raw video codec */
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885extern AVCodec rawvideo_codec;
886
887/* the following codecs use external GPL libs */
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888extern AVCodec ac3_decoder;
889
890/* resample.c */
891
892struct ReSampleContext;
893
894typedef struct ReSampleContext ReSampleContext;
895
896ReSampleContext *audio_resample_init(int output_channels, int input_channels,
897 int output_rate, int input_rate);
898int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
899void audio_resample_close(ReSampleContext *s);
900
901/* YUV420 format is assumed ! */
902
903struct ImgReSampleContext;
904
905typedef struct ImgReSampleContext ImgReSampleContext;
906
907ImgReSampleContext *img_resample_init(int output_width, int output_height,
908 int input_width, int input_height);
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909
910ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
911 int iwidth, int iheight,
912 int topBand, int bottomBand,
913 int leftBand, int rightBand);
914
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915void img_resample(ImgReSampleContext *s,
916 AVPicture *output, AVPicture *input);
917
918void img_resample_close(ImgReSampleContext *s);
919
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920void avpicture_fill(AVPicture *picture, UINT8 *ptr,
921 int pix_fmt, int width, int height);
922int avpicture_get_size(int pix_fmt, int width, int height);
923
924/* convert among pixel formats */
925int img_convert(AVPicture *dst, int dst_pix_fmt,
926 AVPicture *src, int pix_fmt,
927 int width, int height);
928
929/* deinterlace a picture */
930int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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931 int pix_fmt, int width, int height);
932
933/* external high level API */
934
935extern AVCodec *first_avcodec;
936
156e5023 937/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 938unsigned avcodec_version(void);
8bceb6af 939/* returns LIBAVCODEC_BUILD constant */
51a49663 940unsigned avcodec_build(void);
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941void avcodec_init(void);
942
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943void avcodec_set_bit_exact(void);
944
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945void register_avcodec(AVCodec *format);
946AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 947AVCodec *avcodec_find_encoder_by_name(const char *name);
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948AVCodec *avcodec_find_decoder(enum CodecID id);
949AVCodec *avcodec_find_decoder_by_name(const char *name);
950void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
951
7ffbb60e 952AVCodecContext *avcodec_alloc_context(void);
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953int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
954int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
955 int *frame_size_ptr,
956 UINT8 *buf, int buf_size);
957int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
958 int *got_picture_ptr,
959 UINT8 *buf, int buf_size);
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960int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
961 int *data_size_ptr,
962 UINT8 *buf, int buf_size);
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963int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
964 const short *samples);
965int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
966 const AVPicture *pict);
967
968int avcodec_close(AVCodecContext *avctx);
969
970void avcodec_register_all(void);
a96b68b7 971
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972void avcodec_flush_buffers(AVCodecContext *avctx);
973
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974/**
975 * Interface for 0.5.0 version
976 *
977 * do not even think about it's usage for this moment
978 */
979
980typedef struct {
981 // compressed size used from given memory buffer
982 int size;
983 /// I/P/B frame type
984 int frame_type;
985} avc_enc_result_t;
986
987/**
988 * Commands
989 * order can't be changed - once it was defined
990 */
991typedef enum {
992 // general commands
993 AVC_OPEN_BY_NAME = 0xACA000,
994 AVC_OPEN_BY_CODEC_ID,
995 AVC_OPEN_BY_FOURCC,
996 AVC_CLOSE,
997
998 AVC_FLUSH,
999 // pin - struct { uint8_t* src, uint_t src_size }
1000 // pout - struct { AVPicture* img, consumed_bytes,
1001 AVC_DECODE,
1002 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1003 // pout - uint_t used_from_dest_size
1004 AVC_ENCODE,
1005
1006 // query/get video commands
1007 AVC_GET_VERSION = 0xACB000,
1008 AVC_GET_WIDTH,
1009 AVC_GET_HEIGHT,
1010 AVC_GET_DELAY,
1011 AVC_GET_QUANT_TABLE,
1012 // ...
1013
1014 // query/get audio commands
1015 AVC_GET_FRAME_SIZE = 0xABC000,
1016
1017 // maybe define some simple structure which
1018 // might be passed to the user - but they can't
1019 // contain any codec specific parts and these
1020 // calls are usualy necessary only few times
1021
1022 // set video commands
1023 AVC_SET_WIDTH = 0xACD000,
1024 AVC_SET_HEIGHT,
1025
1026 // set video encoding commands
1027 AVC_SET_FRAME_RATE = 0xACD800,
1028 AVC_SET_QUALITY,
1029 AVC_SET_HURRY_UP,
1030
1031 // set audio commands
1032 AVC_SET_SAMPLE_RATE = 0xACE000,
1033 AVC_SET_CHANNELS,
1034
1035} avc_cmd_t;
1036
1037/**
1038 * \param handle allocated private structure by libavcodec
1039 * for initialization pass NULL - will be returned pout
1040 * user is supposed to know nothing about its structure
1041 * \param cmd type of operation to be performed
1042 * \param pint input parameter
1043 * \param pout output parameter
1044 *
1045 * \returns command status - eventually for query command it might return
1046 * integer resulting value
1047 */
1048int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1049
544eb99c 1050/* memory */
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1051void *av_malloc(unsigned int size);
1052void *av_mallocz(unsigned int size);
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1053void av_free(void *ptr);
1054void __av_freep(void **ptr);
1055#define av_freep(p) __av_freep((void **)(p))
1056
a96b68b7 1057#endif /* AVCODEC_H */