bump version numbers and update docs for adts aac support
[libav.git] / libavcodec / avcodec.h
1 #ifndef AVCODEC_H
2 #define AVCODEC_H
3
4 /**
5 * @file avcodec.h
6 * external api header.
7 */
8
9
10 #ifdef __cplusplus
11 extern "C" {
12 #endif
13
14 #include "avutil.h"
15 #include <sys/types.h> /* size_t */
16
17 //FIXME the following 2 really dont belong in here
18 #define FFMPEG_VERSION_INT 0x000409
19 #define FFMPEG_VERSION "CVS"
20
21 #define AV_STRINGIFY(s) AV_TOSTRING(s)
22 #define AV_TOSTRING(s) #s
23
24 #define LIBAVCODEC_VERSION_INT ((51<<16)+(2<<8)+0)
25 #define LIBAVCODEC_VERSION 51.2.0
26 #define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
27
28 #define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
29
30 #define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
31 #define AV_TIME_BASE 1000000
32 #define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE}
33
34 enum CodecID {
35 CODEC_ID_NONE,
36 CODEC_ID_MPEG1VIDEO,
37 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
38 CODEC_ID_MPEG2VIDEO_XVMC,
39 CODEC_ID_H261,
40 CODEC_ID_H263,
41 CODEC_ID_RV10,
42 CODEC_ID_RV20,
43 CODEC_ID_MJPEG,
44 CODEC_ID_MJPEGB,
45 CODEC_ID_LJPEG,
46 CODEC_ID_SP5X,
47 CODEC_ID_JPEGLS,
48 CODEC_ID_MPEG4,
49 CODEC_ID_RAWVIDEO,
50 CODEC_ID_MSMPEG4V1,
51 CODEC_ID_MSMPEG4V2,
52 CODEC_ID_MSMPEG4V3,
53 CODEC_ID_WMV1,
54 CODEC_ID_WMV2,
55 CODEC_ID_H263P,
56 CODEC_ID_H263I,
57 CODEC_ID_FLV1,
58 CODEC_ID_SVQ1,
59 CODEC_ID_SVQ3,
60 CODEC_ID_DVVIDEO,
61 CODEC_ID_HUFFYUV,
62 CODEC_ID_CYUV,
63 CODEC_ID_H264,
64 CODEC_ID_INDEO3,
65 CODEC_ID_VP3,
66 CODEC_ID_THEORA,
67 CODEC_ID_ASV1,
68 CODEC_ID_ASV2,
69 CODEC_ID_FFV1,
70 CODEC_ID_4XM,
71 CODEC_ID_VCR1,
72 CODEC_ID_CLJR,
73 CODEC_ID_MDEC,
74 CODEC_ID_ROQ,
75 CODEC_ID_INTERPLAY_VIDEO,
76 CODEC_ID_XAN_WC3,
77 CODEC_ID_XAN_WC4,
78 CODEC_ID_RPZA,
79 CODEC_ID_CINEPAK,
80 CODEC_ID_WS_VQA,
81 CODEC_ID_MSRLE,
82 CODEC_ID_MSVIDEO1,
83 CODEC_ID_IDCIN,
84 CODEC_ID_8BPS,
85 CODEC_ID_SMC,
86 CODEC_ID_FLIC,
87 CODEC_ID_TRUEMOTION1,
88 CODEC_ID_VMDVIDEO,
89 CODEC_ID_MSZH,
90 CODEC_ID_ZLIB,
91 CODEC_ID_QTRLE,
92 CODEC_ID_SNOW,
93 CODEC_ID_TSCC,
94 CODEC_ID_ULTI,
95 CODEC_ID_QDRAW,
96 CODEC_ID_VIXL,
97 CODEC_ID_QPEG,
98 CODEC_ID_XVID,
99 CODEC_ID_PNG,
100 CODEC_ID_PPM,
101 CODEC_ID_PBM,
102 CODEC_ID_PGM,
103 CODEC_ID_PGMYUV,
104 CODEC_ID_PAM,
105 CODEC_ID_FFVHUFF,
106 CODEC_ID_RV30,
107 CODEC_ID_RV40,
108 CODEC_ID_VC9,
109 CODEC_ID_WMV3,
110 CODEC_ID_LOCO,
111 CODEC_ID_WNV1,
112 CODEC_ID_AASC,
113 CODEC_ID_INDEO2,
114 CODEC_ID_FRAPS,
115 CODEC_ID_TRUEMOTION2,
116 CODEC_ID_BMP,
117 CODEC_ID_CSCD,
118
119 /* various pcm "codecs" */
120 CODEC_ID_PCM_S16LE= 0x10000,
121 CODEC_ID_PCM_S16BE,
122 CODEC_ID_PCM_U16LE,
123 CODEC_ID_PCM_U16BE,
124 CODEC_ID_PCM_S8,
125 CODEC_ID_PCM_U8,
126 CODEC_ID_PCM_MULAW,
127 CODEC_ID_PCM_ALAW,
128 CODEC_ID_PCM_S32LE,
129 CODEC_ID_PCM_S32BE,
130 CODEC_ID_PCM_U32LE,
131 CODEC_ID_PCM_U32BE,
132 CODEC_ID_PCM_S24LE,
133 CODEC_ID_PCM_S24BE,
134 CODEC_ID_PCM_U24LE,
135 CODEC_ID_PCM_U24BE,
136 CODEC_ID_PCM_S24DAUD,
137
138 /* various adpcm codecs */
139 CODEC_ID_ADPCM_IMA_QT= 0x11000,
140 CODEC_ID_ADPCM_IMA_WAV,
141 CODEC_ID_ADPCM_IMA_DK3,
142 CODEC_ID_ADPCM_IMA_DK4,
143 CODEC_ID_ADPCM_IMA_WS,
144 CODEC_ID_ADPCM_IMA_SMJPEG,
145 CODEC_ID_ADPCM_MS,
146 CODEC_ID_ADPCM_4XM,
147 CODEC_ID_ADPCM_XA,
148 CODEC_ID_ADPCM_ADX,
149 CODEC_ID_ADPCM_EA,
150 CODEC_ID_ADPCM_G726,
151 CODEC_ID_ADPCM_CT,
152 CODEC_ID_ADPCM_SWF,
153 CODEC_ID_ADPCM_YAMAHA,
154
155 /* AMR */
156 CODEC_ID_AMR_NB= 0x12000,
157 CODEC_ID_AMR_WB,
158
159 /* RealAudio codecs*/
160 CODEC_ID_RA_144= 0x13000,
161 CODEC_ID_RA_288,
162
163 /* various DPCM codecs */
164 CODEC_ID_ROQ_DPCM= 0x14000,
165 CODEC_ID_INTERPLAY_DPCM,
166 CODEC_ID_XAN_DPCM,
167 CODEC_ID_SOL_DPCM,
168
169 CODEC_ID_MP2= 0x15000,
170 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
171 CODEC_ID_AAC,
172 CODEC_ID_MPEG4AAC,
173 CODEC_ID_AC3,
174 CODEC_ID_DTS,
175 CODEC_ID_VORBIS,
176 CODEC_ID_DVAUDIO,
177 CODEC_ID_WMAV1,
178 CODEC_ID_WMAV2,
179 CODEC_ID_MACE3,
180 CODEC_ID_MACE6,
181 CODEC_ID_VMDAUDIO,
182 CODEC_ID_SONIC,
183 CODEC_ID_SONIC_LS,
184 CODEC_ID_FLAC,
185 CODEC_ID_MP3ADU,
186 CODEC_ID_MP3ON4,
187 CODEC_ID_SHORTEN,
188 CODEC_ID_ALAC,
189 CODEC_ID_WESTWOOD_SND1,
190 CODEC_ID_GSM,
191 CODEC_ID_QDM2,
192 CODEC_ID_COOK,
193 CODEC_ID_TRUESPEECH,
194
195 CODEC_ID_OGGTHEORA= 0x16000,
196
197 /* subtitle codecs */
198 CODEC_ID_DVD_SUBTITLE= 0x17000,
199 CODEC_ID_DVB_SUBTITLE,
200
201 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
202 stream (only used by libavformat) */
203 };
204
205 /* CODEC_ID_MP3LAME is absolete */
206 #define CODEC_ID_MP3LAME CODEC_ID_MP3
207
208 enum CodecType {
209 CODEC_TYPE_UNKNOWN = -1,
210 CODEC_TYPE_VIDEO,
211 CODEC_TYPE_AUDIO,
212 CODEC_TYPE_DATA,
213 CODEC_TYPE_SUBTITLE,
214 };
215
216 /**
217 * Pixel format. Notes:
218 *
219 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
220 * color is put together as:
221 * (A << 24) | (R << 16) | (G << 8) | B
222 * This is stored as BGRA on little endian CPU architectures and ARGB on
223 * big endian CPUs.
224 *
225 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
226 * image data is stored in AVFrame.data[0]. The palette is transported in
227 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
228 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
229 * also endian-specific). Note also that the individual RGB palette
230 * components stored in AVFrame.data[1] should be in the range 0..255.
231 * This is important as many custom PAL8 video codecs that were designed
232 * to run on the IBM VGA graphics adapter use 6-bit palette components.
233 */
234 enum PixelFormat {
235 PIX_FMT_NONE= -1,
236 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
237 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
238 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
239 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
240 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
241 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
242 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
243 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
244 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
245 PIX_FMT_RGB565, ///< always stored in cpu endianness
246 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
247 PIX_FMT_GRAY8,
248 PIX_FMT_MONOWHITE, ///< 0 is white
249 PIX_FMT_MONOBLACK, ///< 0 is black
250 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
251 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
252 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
253 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
254 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
255 PIX_FMT_XVMC_MPEG2_IDCT,
256 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
257 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
258 PIX_FMT_NB,
259 };
260
261 /* currently unused, may be used if 24/32 bits samples ever supported */
262 enum SampleFormat {
263 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
264 SAMPLE_FMT_S32, ///< signed 32 bits
265 SAMPLE_FMT_FLT, ///< float
266 SAMPLE_FMT_DBL, ///< double
267 };
268
269 /* in bytes */
270 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
271
272 /**
273 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
274 * this is mainly needed because some optimized bitstream readers read
275 * 32 or 64 bit at once and could read over the end<br>
276 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
277 * MPEG bitstreams could cause overread and segfault
278 */
279 #define FF_INPUT_BUFFER_PADDING_SIZE 8
280
281 /**
282 * minimum encoding buffer size.
283 * used to avoid some checks during header writing
284 */
285 #define FF_MIN_BUFFER_SIZE 16384
286
287 /* motion estimation type, EPZS by default */
288 enum Motion_Est_ID {
289 ME_ZERO = 1,
290 ME_FULL,
291 ME_LOG,
292 ME_PHODS,
293 ME_EPZS,
294 ME_X1,
295 ME_HEX,
296 ME_UMH,
297 ME_ITER,
298 };
299
300 enum AVDiscard{
301 //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
302 AVDISCARD_NONE =-16, ///< discard nothing
303 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
304 AVDISCARD_NONREF = 8, ///< discard all non reference
305 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
306 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
307 AVDISCARD_ALL = 48, ///< discard all
308 };
309
310 typedef struct RcOverride{
311 int start_frame;
312 int end_frame;
313 int qscale; // if this is 0 then quality_factor will be used instead
314 float quality_factor;
315 } RcOverride;
316
317 /* only for ME compatiblity with old apps */
318 extern int motion_estimation_method;
319
320 #define FF_MAX_B_FRAMES 8
321
322 /* encoding support
323 these flags can be passed in AVCodecContext.flags before initing
324 Note: not everything is supported yet.
325 */
326
327 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
328 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
329 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
330 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
331 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
332 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
333 /* parent program gurantees that the input for b-frame containing streams is not written to
334 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
335 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
336 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
337 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
338 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
339 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
340 #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
341 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
342 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
343 of only at frame boundaries */
344 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
345 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
346 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
347 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
348 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
349 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
350 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
351 /* Fx : Flag for h263+ extra options */
352 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
353 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
354 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
355 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
356 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
357 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
358 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
359 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
360 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
361 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
362 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
363 #define CODEC_FLAG_CLOSED_GOP 0x80000000
364 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
365 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
366 #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
367 #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
368 #define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow b-frames to be used as references
369 #define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for b-frames
370 #define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 multiple references per partition
371 #define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform
372 #define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip
373 #define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters
374 #define CODEC_FLAG2_BRDO 0x00000400 ///< b-frame rate-distortion optimization
375
376 /* Unsupported options :
377 * Syntax Arithmetic coding (SAC)
378 * Reference Picture Selection
379 * Independant Segment Decoding */
380 /* /Fx */
381 /* codec capabilities */
382
383 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
384 /**
385 * Codec uses get_buffer() for allocating buffers.
386 * direct rendering method 1
387 */
388 #define CODEC_CAP_DR1 0x0002
389 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
390 used */
391 #define CODEC_CAP_PARSE_ONLY 0x0004
392 #define CODEC_CAP_TRUNCATED 0x0008
393 /* codec can export data for HW decoding (XvMC) */
394 #define CODEC_CAP_HWACCEL 0x0010
395 /**
396 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
397 * if this is not set, the codec is guranteed to never be feeded with NULL data
398 */
399 #define CODEC_CAP_DELAY 0x0020
400
401 //the following defines may change, don't expect compatibility if you use them
402 #define MB_TYPE_INTRA4x4 0x0001
403 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
404 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
405 #define MB_TYPE_16x16 0x0008
406 #define MB_TYPE_16x8 0x0010
407 #define MB_TYPE_8x16 0x0020
408 #define MB_TYPE_8x8 0x0040
409 #define MB_TYPE_INTERLACED 0x0080
410 #define MB_TYPE_DIRECT2 0x0100 //FIXME
411 #define MB_TYPE_ACPRED 0x0200
412 #define MB_TYPE_GMC 0x0400
413 #define MB_TYPE_SKIP 0x0800
414 #define MB_TYPE_P0L0 0x1000
415 #define MB_TYPE_P1L0 0x2000
416 #define MB_TYPE_P0L1 0x4000
417 #define MB_TYPE_P1L1 0x8000
418 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
419 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
420 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
421 #define MB_TYPE_QUANT 0x00010000
422 #define MB_TYPE_CBP 0x00020000
423 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
424
425 /**
426 * Pan Scan area.
427 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
428 */
429 typedef struct AVPanScan{
430 /**
431 * id.
432 * - encoding: set by user.
433 * - decoding: set by lavc
434 */
435 int id;
436
437 /**
438 * width and height in 1/16 pel
439 * - encoding: set by user.
440 * - decoding: set by lavc
441 */
442 int width;
443 int height;
444
445 /**
446 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
447 * - encoding: set by user.
448 * - decoding: set by lavc
449 */
450 int16_t position[3][2];
451 }AVPanScan;
452
453 #define FF_COMMON_FRAME \
454 /**\
455 * pointer to the picture planes.\
456 * this might be different from the first allocated byte\
457 * - encoding: \
458 * - decoding: \
459 */\
460 uint8_t *data[4];\
461 int linesize[4];\
462 /**\
463 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
464 * this isn't used by lavc unless the default get/release_buffer() is used\
465 * - encoding: \
466 * - decoding: \
467 */\
468 uint8_t *base[4];\
469 /**\
470 * 1 -> keyframe, 0-> not\
471 * - encoding: set by lavc\
472 * - decoding: set by lavc\
473 */\
474 int key_frame;\
475 \
476 /**\
477 * picture type of the frame, see ?_TYPE below.\
478 * - encoding: set by lavc for coded_picture (and set by user for input)\
479 * - decoding: set by lavc\
480 */\
481 int pict_type;\
482 \
483 /**\
484 * presentation timestamp in time_base units (time when frame should be shown to user)\
485 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
486 * - encoding: MUST be set by user\
487 * - decoding: set by lavc\
488 */\
489 int64_t pts;\
490 \
491 /**\
492 * picture number in bitstream order.\
493 * - encoding: set by\
494 * - decoding: set by lavc\
495 */\
496 int coded_picture_number;\
497 /**\
498 * picture number in display order.\
499 * - encoding: set by\
500 * - decoding: set by lavc\
501 */\
502 int display_picture_number;\
503 \
504 /**\
505 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
506 * - encoding: set by lavc for coded_picture (and set by user for input)\
507 * - decoding: set by lavc\
508 */\
509 int quality; \
510 \
511 /**\
512 * buffer age (1->was last buffer and dint change, 2->..., ...).\
513 * set to INT_MAX if the buffer has not been used yet \
514 * - encoding: unused\
515 * - decoding: MUST be set by get_buffer()\
516 */\
517 int age;\
518 \
519 /**\
520 * is this picture used as reference\
521 * - encoding: unused\
522 * - decoding: set by lavc (before get_buffer() call))\
523 */\
524 int reference;\
525 \
526 /**\
527 * QP table\
528 * - encoding: unused\
529 * - decoding: set by lavc\
530 */\
531 int8_t *qscale_table;\
532 /**\
533 * QP store stride\
534 * - encoding: unused\
535 * - decoding: set by lavc\
536 */\
537 int qstride;\
538 \
539 /**\
540 * mbskip_table[mb]>=1 if MB didnt change\
541 * stride= mb_width = (width+15)>>4\
542 * - encoding: unused\
543 * - decoding: set by lavc\
544 */\
545 uint8_t *mbskip_table;\
546 \
547 /**\
548 * Motion vector table.\
549 * @code\
550 * example:\
551 * int mv_sample_log2= 4 - motion_subsample_log2;\
552 * int mb_width= (width+15)>>4;\
553 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
554 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
555 * @endcode\
556 * - encoding: set by user\
557 * - decoding: set by lavc\
558 */\
559 int16_t (*motion_val[2])[2];\
560 \
561 /**\
562 * Macroblock type table\
563 * mb_type_base + mb_width + 2\
564 * - encoding: set by user\
565 * - decoding: set by lavc\
566 */\
567 uint32_t *mb_type;\
568 \
569 /**\
570 * log2 of the size of the block which a single vector in motion_val represents: \
571 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
572 * - encoding: unused\
573 * - decoding: set by lavc\
574 */\
575 uint8_t motion_subsample_log2;\
576 \
577 /**\
578 * for some private data of the user\
579 * - encoding: unused\
580 * - decoding: set by user\
581 */\
582 void *opaque;\
583 \
584 /**\
585 * error\
586 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
587 * - decoding: unused\
588 */\
589 uint64_t error[4];\
590 \
591 /**\
592 * type of the buffer (to keep track of who has to dealloc data[*])\
593 * - encoding: set by the one who allocs it\
594 * - decoding: set by the one who allocs it\
595 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
596 */\
597 int type;\
598 \
599 /**\
600 * when decoding, this signal how much the picture must be delayed.\
601 * extra_delay = repeat_pict / (2*fps)\
602 * - encoding: unused\
603 * - decoding: set by lavc\
604 */\
605 int repeat_pict;\
606 \
607 /**\
608 * \
609 */\
610 int qscale_type;\
611 \
612 /**\
613 * The content of the picture is interlaced.\
614 * - encoding: set by user\
615 * - decoding: set by lavc (default 0)\
616 */\
617 int interlaced_frame;\
618 \
619 /**\
620 * if the content is interlaced, is top field displayed first.\
621 * - encoding: set by user\
622 * - decoding: set by lavc\
623 */\
624 int top_field_first;\
625 \
626 /**\
627 * Pan scan.\
628 * - encoding: set by user\
629 * - decoding: set by lavc\
630 */\
631 AVPanScan *pan_scan;\
632 \
633 /**\
634 * tell user application that palette has changed from previous frame.\
635 * - encoding: ??? (no palette-enabled encoder yet)\
636 * - decoding: set by lavc (default 0)\
637 */\
638 int palette_has_changed;\
639 \
640 /**\
641 * Codec suggestion on buffer type if != 0\
642 * - encoding: unused\
643 * - decoding: set by lavc (before get_buffer() call))\
644 */\
645 int buffer_hints;\
646 \
647 /**\
648 * DCT coeffitients\
649 * - encoding: unused\
650 * - decoding: set by lavc\
651 */\
652 short *dct_coeff;\
653 \
654 /**\
655 * Motion referece frame index\
656 * - encoding: set by user\
657 * - decoding: set by lavc\
658 */\
659 int8_t *ref_index[2];
660
661 #define FF_QSCALE_TYPE_MPEG1 0
662 #define FF_QSCALE_TYPE_MPEG2 1
663 #define FF_QSCALE_TYPE_H264 2
664
665 #define FF_BUFFER_TYPE_INTERNAL 1
666 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
667 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
668 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
669
670
671 #define FF_I_TYPE 1 // Intra
672 #define FF_P_TYPE 2 // Predicted
673 #define FF_B_TYPE 3 // Bi-dir predicted
674 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
675 #define FF_SI_TYPE 5
676 #define FF_SP_TYPE 6
677
678 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
679 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
680 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
681 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
682
683 /**
684 * Audio Video Frame.
685 */
686 typedef struct AVFrame {
687 FF_COMMON_FRAME
688 } AVFrame;
689
690 #define DEFAULT_FRAME_RATE_BASE 1001000
691
692 /**
693 * Used by av_log
694 */
695 typedef struct AVCLASS AVClass;
696 struct AVCLASS {
697 const char* class_name;
698 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
699 or AVFormatContext, which begin with an AVClass.
700 Needed because av_log is in libavcodec and has no visibility
701 of AVIn/OutputFormat */
702 struct AVOption *option;
703 };
704
705 /**
706 * main external api structure.
707 */
708 typedef struct AVCodecContext {
709 /**
710 * Info on struct for av_log
711 * - set by avcodec_alloc_context
712 */
713 AVClass *av_class;
714 /**
715 * the average bitrate.
716 * - encoding: set by user. unused for constant quantizer encoding
717 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
718 */
719 int bit_rate;
720
721 /**
722 * number of bits the bitstream is allowed to diverge from the reference.
723 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
724 * - encoding: set by user. unused for constant quantizer encoding
725 * - decoding: unused
726 */
727 int bit_rate_tolerance;
728
729 /**
730 * CODEC_FLAG_*.
731 * - encoding: set by user.
732 * - decoding: set by user.
733 */
734 int flags;
735
736 /**
737 * some codecs needs additionnal format info. It is stored here
738 * - encoding: set by user.
739 * - decoding: set by lavc. (FIXME is this ok?)
740 */
741 int sub_id;
742
743 /**
744 * motion estimation algorithm used for video coding.
745 * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
746 * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
747 * - encoding: MUST be set by user.
748 * - decoding: unused
749 */
750 int me_method;
751
752 /**
753 * some codecs need / can use extra-data like huffman tables.
754 * mjpeg: huffman tables
755 * rv10: additional flags
756 * mpeg4: global headers (they can be in the bitstream or here)
757 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
758 * then extradata_size to avoid prolems if its read with the bitstream reader
759 * the bytewise contents of extradata must not depend on the architecture or cpu endianness
760 * - encoding: set/allocated/freed by lavc.
761 * - decoding: set/allocated/freed by user.
762 */
763 void *extradata;
764 int extradata_size;
765
766 /**
767 * this is the fundamental unit of time (in seconds) in terms
768 * of which frame timestamps are represented. for fixed-fps content,
769 * timebase should be 1/framerate and timestamp increments should be
770 * identically 1.
771 * - encoding: MUST be set by user
772 * - decoding: set by lavc.
773 */
774 AVRational time_base;
775
776 /* video only */
777 /**
778 * picture width / height.
779 * - encoding: MUST be set by user.
780 * - decoding: set by lavc.
781 * Note, for compatibility its possible to set this instead of
782 * coded_width/height before decoding
783 */
784 int width, height;
785
786 #define FF_ASPECT_EXTENDED 15
787
788 /**
789 * the number of pictures in a group of pitures, or 0 for intra_only.
790 * - encoding: set by user.
791 * - decoding: unused
792 */
793 int gop_size;
794
795 /**
796 * pixel format, see PIX_FMT_xxx.
797 * - encoding: set by user.
798 * - decoding: set by lavc.
799 */
800 enum PixelFormat pix_fmt;
801
802 /**
803 * Frame rate emulation. If not zero lower layer (i.e. format handler)
804 * has to read frames at native frame rate.
805 * - encoding: set by user.
806 * - decoding: unused.
807 */
808 int rate_emu;
809
810 /**
811 * if non NULL, 'draw_horiz_band' is called by the libavcodec
812 * decoder to draw an horizontal band. It improve cache usage. Not
813 * all codecs can do that. You must check the codec capabilities
814 * before
815 * - encoding: unused
816 * - decoding: set by user.
817 * @param height the height of the slice
818 * @param y the y position of the slice
819 * @param type 1->top field, 2->bottom field, 3->frame
820 * @param offset offset into the AVFrame.data from which the slice should be read
821 */
822 void (*draw_horiz_band)(struct AVCodecContext *s,
823 const AVFrame *src, int offset[4],
824 int y, int type, int height);
825
826 /* audio only */
827 int sample_rate; ///< samples per sec
828 int channels;
829
830 /**
831 * audio sample format.
832 * - encoding: set by user.
833 * - decoding: set by lavc.
834 */
835 enum SampleFormat sample_fmt; ///< sample format, currenly unused
836
837 /* the following data should not be initialized */
838 /**
839 * samples per packet. initialized when calling 'init'
840 */
841 int frame_size;
842 int frame_number; ///< audio or video frame number
843 int real_pict_num; ///< returns the real picture number of previous encoded frame
844
845 /**
846 * number of frames the decoded output will be delayed relative to
847 * the encoded input.
848 * - encoding: set by lavc.
849 * - decoding: unused
850 */
851 int delay;
852
853 /* - encoding parameters */
854 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
855 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
856
857 /**
858 * minimum quantizer.
859 * - encoding: set by user.
860 * - decoding: unused
861 */
862 int qmin;
863
864 /**
865 * maximum quantizer.
866 * - encoding: set by user.
867 * - decoding: unused
868 */
869 int qmax;
870
871 /**
872 * maximum quantizer difference etween frames.
873 * - encoding: set by user.
874 * - decoding: unused
875 */
876 int max_qdiff;
877
878 /**
879 * maximum number of b frames between non b frames.
880 * note: the output will be delayed by max_b_frames+1 relative to the input
881 * - encoding: set by user.
882 * - decoding: unused
883 */
884 int max_b_frames;
885
886 /**
887 * qscale factor between ip and b frames.
888 * - encoding: set by user.
889 * - decoding: unused
890 */
891 float b_quant_factor;
892
893 /** obsolete FIXME remove */
894 int rc_strategy;
895 #define FF_RC_STRATEGY_XVID 1
896
897 int b_frame_strategy;
898
899 /**
900 * hurry up amount.
901 * deprecated in favor of skip_idct and skip_frame
902 * - encoding: unused
903 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
904 */
905 int hurry_up;
906
907 struct AVCodec *codec;
908
909 void *priv_data;
910
911 /* unused, FIXME remove*/
912 int rtp_mode;
913
914 int rtp_payload_size; /* The size of the RTP payload: the coder will */
915 /* do it's best to deliver a chunk with size */
916 /* below rtp_payload_size, the chunk will start */
917 /* with a start code on some codecs like H.263 */
918 /* This doesn't take account of any particular */
919 /* headers inside the transmited RTP payload */
920
921
922 /* The RTP callback: This function is called */
923 /* every time the encoder has a packet to send */
924 /* Depends on the encoder if the data starts */
925 /* with a Start Code (it should) H.263 does. */
926 /* mb_nb contains the number of macroblocks */
927 /* encoded in the RTP payload */
928 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
929
930 /* statistics, used for 2-pass encoding */
931 int mv_bits;
932 int header_bits;
933 int i_tex_bits;
934 int p_tex_bits;
935 int i_count;
936 int p_count;
937 int skip_count;
938 int misc_bits;
939
940 /**
941 * number of bits used for the previously encoded frame.
942 * - encoding: set by lavc
943 * - decoding: unused
944 */
945 int frame_bits;
946
947 /**
948 * private data of the user, can be used to carry app specific stuff.
949 * - encoding: set by user
950 * - decoding: set by user
951 */
952 void *opaque;
953
954 char codec_name[32];
955 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
956 enum CodecID codec_id; /* see CODEC_ID_xxx */
957
958 /**
959 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
960 * this is used to workaround some encoder bugs
961 * - encoding: set by user, if not then the default based on codec_id will be used
962 * - decoding: set by user, will be converted to upper case by lavc during init
963 */
964 unsigned int codec_tag;
965
966 /**
967 * workaround bugs in encoders which sometimes cannot be detected automatically.
968 * - encoding: set by user
969 * - decoding: set by user
970 */
971 int workaround_bugs;
972 #define FF_BUG_AUTODETECT 1 ///< autodetection
973 #define FF_BUG_OLD_MSMPEG4 2
974 #define FF_BUG_XVID_ILACE 4
975 #define FF_BUG_UMP4 8
976 #define FF_BUG_NO_PADDING 16
977 #define FF_BUG_AMV 32
978 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
979 #define FF_BUG_QPEL_CHROMA 64
980 #define FF_BUG_STD_QPEL 128
981 #define FF_BUG_QPEL_CHROMA2 256
982 #define FF_BUG_DIRECT_BLOCKSIZE 512
983 #define FF_BUG_EDGE 1024
984 #define FF_BUG_HPEL_CHROMA 2048
985 #define FF_BUG_DC_CLIP 4096
986 #define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
987 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
988
989 /**
990 * luma single coeff elimination threshold.
991 * - encoding: set by user
992 * - decoding: unused
993 */
994 int luma_elim_threshold;
995
996 /**
997 * chroma single coeff elimination threshold.
998 * - encoding: set by user
999 * - decoding: unused
1000 */
1001 int chroma_elim_threshold;
1002
1003 /**
1004 * strictly follow the std (MPEG4, ...).
1005 * - encoding: set by user
1006 * - decoding: unused
1007 */
1008 int strict_std_compliance;
1009 #define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
1010 #define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
1011 #define FF_COMPLIANCE_NORMAL 0
1012 #define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
1013 #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
1014
1015 /**
1016 * qscale offset between ip and b frames.
1017 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1018 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1019 * - encoding: set by user.
1020 * - decoding: unused
1021 */
1022 float b_quant_offset;
1023
1024 /**
1025 * error resilience higher values will detect more errors but may missdetect
1026 * some more or less valid parts as errors.
1027 * - encoding: unused
1028 * - decoding: set by user
1029 */
1030 int error_resilience;
1031 #define FF_ER_CAREFUL 1
1032 #define FF_ER_COMPLIANT 2
1033 #define FF_ER_AGGRESSIVE 3
1034 #define FF_ER_VERY_AGGRESSIVE 4
1035
1036 /**
1037 * called at the beginning of each frame to get a buffer for it.
1038 * if pic.reference is set then the frame will be read later by lavc
1039 * avcodec_align_dimensions() should be used to find the required width and
1040 * height, as they normally need to be rounded up to the next multiple of 16
1041 * - encoding: unused
1042 * - decoding: set by lavc, user can override
1043 */
1044 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1045
1046 /**
1047 * called to release buffers which where allocated with get_buffer.
1048 * a released buffer can be reused in get_buffer()
1049 * pic.data[*] must be set to NULL
1050 * - encoding: unused
1051 * - decoding: set by lavc, user can override
1052 */
1053 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1054
1055 /**
1056 * if 1 the stream has a 1 frame delay during decoding.
1057 * - encoding: set by lavc
1058 * - decoding: set by lavc
1059 */
1060 int has_b_frames;
1061
1062 /**
1063 * number of bytes per packet if constant and known or 0
1064 * used by some WAV based audio codecs
1065 */
1066 int block_align;
1067
1068 int parse_only; /* - decoding only: if true, only parsing is done
1069 (function avcodec_parse_frame()). The frame
1070 data is returned. Only MPEG codecs support this now. */
1071
1072 /**
1073 * 0-> h263 quant 1-> mpeg quant.
1074 * - encoding: set by user.
1075 * - decoding: unused
1076 */
1077 int mpeg_quant;
1078
1079 /**
1080 * pass1 encoding statistics output buffer.
1081 * - encoding: set by lavc
1082 * - decoding: unused
1083 */
1084 char *stats_out;
1085
1086 /**
1087 * pass2 encoding statistics input buffer.
1088 * concatenated stuff from stats_out of pass1 should be placed here
1089 * - encoding: allocated/set/freed by user
1090 * - decoding: unused
1091 */
1092 char *stats_in;
1093
1094 /**
1095 * ratecontrol qmin qmax limiting method.
1096 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1097 * - encoding: set by user.
1098 * - decoding: unused
1099 */
1100 float rc_qsquish;
1101
1102 float rc_qmod_amp;
1103 int rc_qmod_freq;
1104
1105 /**
1106 * ratecontrol override, see RcOverride.
1107 * - encoding: allocated/set/freed by user.
1108 * - decoding: unused
1109 */
1110 RcOverride *rc_override;
1111 int rc_override_count;
1112
1113 /**
1114 * rate control equation.
1115 * - encoding: set by user
1116 * - decoding: unused
1117 */
1118 char *rc_eq;
1119
1120 /**
1121 * maximum bitrate.
1122 * - encoding: set by user.
1123 * - decoding: unused
1124 */
1125 int rc_max_rate;
1126
1127 /**
1128 * minimum bitrate.
1129 * - encoding: set by user.
1130 * - decoding: unused
1131 */
1132 int rc_min_rate;
1133
1134 /**
1135 * decoder bitstream buffer size.
1136 * - encoding: set by user.
1137 * - decoding: unused
1138 */
1139 int rc_buffer_size;
1140 float rc_buffer_aggressivity;
1141
1142 /**
1143 * qscale factor between p and i frames.
1144 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1145 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1146 * - encoding: set by user.
1147 * - decoding: unused
1148 */
1149 float i_quant_factor;
1150
1151 /**
1152 * qscale offset between p and i frames.
1153 * - encoding: set by user.
1154 * - decoding: unused
1155 */
1156 float i_quant_offset;
1157
1158 /**
1159 * initial complexity for pass1 ratecontrol.
1160 * - encoding: set by user.
1161 * - decoding: unused
1162 */
1163 float rc_initial_cplx;
1164
1165 /**
1166 * dct algorithm, see FF_DCT_* below.
1167 * - encoding: set by user
1168 * - decoding: unused
1169 */
1170 int dct_algo;
1171 #define FF_DCT_AUTO 0
1172 #define FF_DCT_FASTINT 1
1173 #define FF_DCT_INT 2
1174 #define FF_DCT_MMX 3
1175 #define FF_DCT_MLIB 4
1176 #define FF_DCT_ALTIVEC 5
1177 #define FF_DCT_FAAN 6
1178
1179 /**
1180 * luminance masking (0-> disabled).
1181 * - encoding: set by user
1182 * - decoding: unused
1183 */
1184 float lumi_masking;
1185
1186 /**
1187 * temporary complexity masking (0-> disabled).
1188 * - encoding: set by user
1189 * - decoding: unused
1190 */
1191 float temporal_cplx_masking;
1192
1193 /**
1194 * spatial complexity masking (0-> disabled).
1195 * - encoding: set by user
1196 * - decoding: unused
1197 */
1198 float spatial_cplx_masking;
1199
1200 /**
1201 * p block masking (0-> disabled).
1202 * - encoding: set by user
1203 * - decoding: unused
1204 */
1205 float p_masking;
1206
1207 /**
1208 * darkness masking (0-> disabled).
1209 * - encoding: set by user
1210 * - decoding: unused
1211 */
1212 float dark_masking;
1213
1214
1215 /* for binary compatibility */
1216 int unused;
1217
1218 /**
1219 * idct algorithm, see FF_IDCT_* below.
1220 * - encoding: set by user
1221 * - decoding: set by user
1222 */
1223 int idct_algo;
1224 #define FF_IDCT_AUTO 0
1225 #define FF_IDCT_INT 1
1226 #define FF_IDCT_SIMPLE 2
1227 #define FF_IDCT_SIMPLEMMX 3
1228 #define FF_IDCT_LIBMPEG2MMX 4
1229 #define FF_IDCT_PS2 5
1230 #define FF_IDCT_MLIB 6
1231 #define FF_IDCT_ARM 7
1232 #define FF_IDCT_ALTIVEC 8
1233 #define FF_IDCT_SH4 9
1234 #define FF_IDCT_SIMPLEARM 10
1235 #define FF_IDCT_H264 11
1236 #define FF_IDCT_VP3 12
1237 #define FF_IDCT_IPP 13
1238 #define FF_IDCT_XVIDMMX 14
1239
1240 /**
1241 * slice count.
1242 * - encoding: set by lavc
1243 * - decoding: set by user (or 0)
1244 */
1245 int slice_count;
1246 /**
1247 * slice offsets in the frame in bytes.
1248 * - encoding: set/allocated by lavc
1249 * - decoding: set/allocated by user (or NULL)
1250 */
1251 int *slice_offset;
1252
1253 /**
1254 * error concealment flags.
1255 * - encoding: unused
1256 * - decoding: set by user
1257 */
1258 int error_concealment;
1259 #define FF_EC_GUESS_MVS 1
1260 #define FF_EC_DEBLOCK 2
1261
1262 /**
1263 * dsp_mask could be add used to disable unwanted CPU features
1264 * CPU features (i.e. MMX, SSE. ...)
1265 *
1266 * with FORCE flag you may instead enable given CPU features
1267 * (Dangerous: usable in case of misdetection, improper usage however will
1268 * result into program crash)
1269 */
1270 unsigned dsp_mask;
1271 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1272 /* lower 16 bits - CPU features */
1273 #ifdef HAVE_MMX
1274 #define FF_MM_MMX 0x0001 /* standard MMX */
1275 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1276 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1277 #define FF_MM_SSE 0x0008 /* SSE functions */
1278 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1279 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1280 #endif /* HAVE_MMX */
1281 #ifdef HAVE_IWMMXT
1282 #define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
1283 #endif /* HAVE_IWMMXT */
1284
1285 /**
1286 * bits per sample/pixel from the demuxer (needed for huffyuv).
1287 * - encoding: set by lavc
1288 * - decoding: set by user
1289 */
1290 int bits_per_sample;
1291
1292 /**
1293 * prediction method (needed for huffyuv).
1294 * - encoding: set by user
1295 * - decoding: unused
1296 */
1297 int prediction_method;
1298 #define FF_PRED_LEFT 0
1299 #define FF_PRED_PLANE 1
1300 #define FF_PRED_MEDIAN 2
1301
1302 /**
1303 * sample aspect ratio (0 if unknown).
1304 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1305 * - encoding: set by user.
1306 * - decoding: set by lavc.
1307 */
1308 AVRational sample_aspect_ratio;
1309
1310 /**
1311 * the picture in the bitstream.
1312 * - encoding: set by lavc
1313 * - decoding: set by lavc
1314 */
1315 AVFrame *coded_frame;
1316
1317 /**
1318 * debug.
1319 * - encoding: set by user.
1320 * - decoding: set by user.
1321 */
1322 int debug;
1323 #define FF_DEBUG_PICT_INFO 1
1324 #define FF_DEBUG_RC 2
1325 #define FF_DEBUG_BITSTREAM 4
1326 #define FF_DEBUG_MB_TYPE 8
1327 #define FF_DEBUG_QP 16
1328 #define FF_DEBUG_MV 32
1329 #define FF_DEBUG_DCT_COEFF 0x00000040
1330 #define FF_DEBUG_SKIP 0x00000080
1331 #define FF_DEBUG_STARTCODE 0x00000100
1332 #define FF_DEBUG_PTS 0x00000200
1333 #define FF_DEBUG_ER 0x00000400
1334 #define FF_DEBUG_MMCO 0x00000800
1335 #define FF_DEBUG_BUGS 0x00001000
1336 #define FF_DEBUG_VIS_QP 0x00002000
1337 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1338
1339 /**
1340 * debug.
1341 * - encoding: set by user.
1342 * - decoding: set by user.
1343 */
1344 int debug_mv;
1345 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1346 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1347 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1348
1349 /**
1350 * error.
1351 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1352 * - decoding: unused
1353 */
1354 uint64_t error[4];
1355
1356 /**
1357 * minimum MB quantizer.
1358 * - encoding: unused
1359 * - decoding: unused
1360 */
1361 int mb_qmin;
1362
1363 /**
1364 * maximum MB quantizer.
1365 * - encoding: unused
1366 * - decoding: unused
1367 */
1368 int mb_qmax;
1369
1370 /**
1371 * motion estimation compare function.
1372 * - encoding: set by user.
1373 * - decoding: unused
1374 */
1375 int me_cmp;
1376 /**
1377 * subpixel motion estimation compare function.
1378 * - encoding: set by user.
1379 * - decoding: unused
1380 */
1381 int me_sub_cmp;
1382 /**
1383 * macroblock compare function (not supported yet).
1384 * - encoding: set by user.
1385 * - decoding: unused
1386 */
1387 int mb_cmp;
1388 /**
1389 * interlaced dct compare function
1390 * - encoding: set by user.
1391 * - decoding: unused
1392 */
1393 int ildct_cmp;
1394 #define FF_CMP_SAD 0
1395 #define FF_CMP_SSE 1
1396 #define FF_CMP_SATD 2
1397 #define FF_CMP_DCT 3
1398 #define FF_CMP_PSNR 4
1399 #define FF_CMP_BIT 5
1400 #define FF_CMP_RD 6
1401 #define FF_CMP_ZERO 7
1402 #define FF_CMP_VSAD 8
1403 #define FF_CMP_VSSE 9
1404 #define FF_CMP_NSSE 10
1405 #define FF_CMP_W53 11
1406 #define FF_CMP_W97 12
1407 #define FF_CMP_DCTMAX 13
1408 #define FF_CMP_DCT264 14
1409 #define FF_CMP_CHROMA 256
1410
1411 /**
1412 * ME diamond size & shape.
1413 * - encoding: set by user.
1414 * - decoding: unused
1415 */
1416 int dia_size;
1417
1418 /**
1419 * amount of previous MV predictors (2a+1 x 2a+1 square).
1420 * - encoding: set by user.
1421 * - decoding: unused
1422 */
1423 int last_predictor_count;
1424
1425 /**
1426 * pre pass for motion estimation.
1427 * - encoding: set by user.
1428 * - decoding: unused
1429 */
1430 int pre_me;
1431
1432 /**
1433 * motion estimation pre pass compare function.
1434 * - encoding: set by user.
1435 * - decoding: unused
1436 */
1437 int me_pre_cmp;
1438
1439 /**
1440 * ME pre pass diamond size & shape.
1441 * - encoding: set by user.
1442 * - decoding: unused
1443 */
1444 int pre_dia_size;
1445
1446 /**
1447 * subpel ME quality.
1448 * - encoding: set by user.
1449 * - decoding: unused
1450 */
1451 int me_subpel_quality;
1452
1453 /**
1454 * callback to negotiate the pixelFormat.
1455 * @param fmt is the list of formats which are supported by the codec,
1456 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1457 * the first is allways the native one
1458 * @return the choosen format
1459 * - encoding: unused
1460 * - decoding: set by user, if not set then the native format will always be choosen
1461 */
1462 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1463
1464 /**
1465 * DTG active format information (additionnal aspect ratio
1466 * information only used in DVB MPEG2 transport streams). 0 if
1467 * not set.
1468 *
1469 * - encoding: unused.
1470 * - decoding: set by decoder
1471 */
1472 int dtg_active_format;
1473 #define FF_DTG_AFD_SAME 8
1474 #define FF_DTG_AFD_4_3 9
1475 #define FF_DTG_AFD_16_9 10
1476 #define FF_DTG_AFD_14_9 11
1477 #define FF_DTG_AFD_4_3_SP_14_9 13
1478 #define FF_DTG_AFD_16_9_SP_14_9 14
1479 #define FF_DTG_AFD_SP_4_3 15
1480
1481 /**
1482 * Maximum motion estimation search range in subpel units.
1483 * if 0 then no limit
1484 *
1485 * - encoding: set by user.
1486 * - decoding: unused.
1487 */
1488 int me_range;
1489
1490 /**
1491 * intra quantizer bias.
1492 * - encoding: set by user.
1493 * - decoding: unused
1494 */
1495 int intra_quant_bias;
1496 #define FF_DEFAULT_QUANT_BIAS 999999
1497
1498 /**
1499 * inter quantizer bias.
1500 * - encoding: set by user.
1501 * - decoding: unused
1502 */
1503 int inter_quant_bias;
1504
1505 /**
1506 * color table ID.
1507 * - encoding: unused.
1508 * - decoding: which clrtable should be used for 8bit RGB images
1509 * table have to be stored somewhere FIXME
1510 */
1511 int color_table_id;
1512
1513 /**
1514 * internal_buffer count.
1515 * Don't touch, used by lavc default_get_buffer()
1516 */
1517 int internal_buffer_count;
1518
1519 /**
1520 * internal_buffers.
1521 * Don't touch, used by lavc default_get_buffer()
1522 */
1523 void *internal_buffer;
1524
1525 #define FF_LAMBDA_SHIFT 7
1526 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1527 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1528 #define FF_LAMBDA_MAX (256*128-1)
1529
1530 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1531 /**
1532 * global quality for codecs which cannot change it per frame.
1533 * this should be proportional to MPEG1/2/4 qscale.
1534 * - encoding: set by user.
1535 * - decoding: unused
1536 */
1537 int global_quality;
1538
1539 #define FF_CODER_TYPE_VLC 0
1540 #define FF_CODER_TYPE_AC 1
1541 /**
1542 * coder type
1543 * - encoding: set by user.
1544 * - decoding: unused
1545 */
1546 int coder_type;
1547
1548 /**
1549 * context model
1550 * - encoding: set by user.
1551 * - decoding: unused
1552 */
1553 int context_model;
1554 #if 0
1555 /**
1556 *
1557 * - encoding: unused
1558 * - decoding: set by user.
1559 */
1560 uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1561 #endif
1562
1563 /**
1564 * slice flags
1565 * - encoding: unused
1566 * - decoding: set by user.
1567 */
1568 int slice_flags;
1569 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1570 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1571 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1572
1573 /**
1574 * XVideo Motion Acceleration
1575 * - encoding: forbidden
1576 * - decoding: set by decoder
1577 */
1578 int xvmc_acceleration;
1579
1580 /**
1581 * macroblock decision mode
1582 * - encoding: set by user.
1583 * - decoding: unused
1584 */
1585 int mb_decision;
1586 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1587 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1588 #define FF_MB_DECISION_RD 2 ///< rate distoration
1589
1590 /**
1591 * custom intra quantization matrix
1592 * - encoding: set by user, can be NULL
1593 * - decoding: set by lavc
1594 */
1595 uint16_t *intra_matrix;
1596
1597 /**
1598 * custom inter quantization matrix
1599 * - encoding: set by user, can be NULL
1600 * - decoding: set by lavc
1601 */
1602 uint16_t *inter_matrix;
1603
1604 /**
1605 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1606 * this is used to workaround some encoder bugs
1607 * - encoding: unused
1608 * - decoding: set by user, will be converted to upper case by lavc during init
1609 */
1610 unsigned int stream_codec_tag;
1611
1612 /**
1613 * scene change detection threshold.
1614 * 0 is default, larger means fewer detected scene changes
1615 * - encoding: set by user.
1616 * - decoding: unused
1617 */
1618 int scenechange_threshold;
1619
1620 /**
1621 * minimum lagrange multipler
1622 * - encoding: set by user.
1623 * - decoding: unused
1624 */
1625 int lmin;
1626
1627 /**
1628 * maximum lagrange multipler
1629 * - encoding: set by user.
1630 * - decoding: unused
1631 */
1632 int lmax;
1633
1634 /**
1635 * Palette control structure
1636 * - encoding: ??? (no palette-enabled encoder yet)
1637 * - decoding: set by user.
1638 */
1639 struct AVPaletteControl *palctrl;
1640
1641 /**
1642 * noise reduction strength
1643 * - encoding: set by user.
1644 * - decoding: unused
1645 */
1646 int noise_reduction;
1647
1648 /**
1649 * called at the beginning of a frame to get cr buffer for it.
1650 * buffer type (size, hints) must be the same. lavc won't check it.
1651 * lavc will pass previous buffer in pic, function should return
1652 * same buffer or new buffer with old frame "painted" into it.
1653 * if pic.data[0] == NULL must behave like get_buffer().
1654 * - encoding: unused
1655 * - decoding: set by lavc, user can override
1656 */
1657 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1658
1659 /**
1660 * number of bits which should be loaded into the rc buffer before decoding starts
1661 * - encoding: set by user.
1662 * - decoding: unused
1663 */
1664 int rc_initial_buffer_occupancy;
1665
1666 /**
1667 *
1668 * - encoding: set by user.
1669 * - decoding: unused
1670 */
1671 int inter_threshold;
1672
1673 /**
1674 * CODEC_FLAG2_*.
1675 * - encoding: set by user.
1676 * - decoding: set by user.
1677 */
1678 int flags2;
1679
1680 /**
1681 * simulates errors in the bitstream to test error concealment.
1682 * - encoding: set by user.
1683 * - decoding: unused.
1684 */
1685 int error_rate;
1686
1687 /**
1688 * MP3 antialias algorithm, see FF_AA_* below.
1689 * - encoding: unused
1690 * - decoding: set by user
1691 */
1692 int antialias_algo;
1693 #define FF_AA_AUTO 0
1694 #define FF_AA_FASTINT 1 //not implemented yet
1695 #define FF_AA_INT 2
1696 #define FF_AA_FLOAT 3
1697 /**
1698 * Quantizer noise shaping.
1699 * - encoding: set by user
1700 * - decoding: unused
1701 */
1702 int quantizer_noise_shaping;
1703
1704 /**
1705 * Thread count.
1706 * is used to decide how many independant tasks should be passed to execute()
1707 * - encoding: set by user
1708 * - decoding: set by user
1709 */
1710 int thread_count;
1711
1712 /**
1713 * the codec may call this to execute several independant things. it will return only after
1714 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1715 * default implementation will execute the parts serially
1716 * @param count the number of things to execute
1717 * - encoding: set by lavc, user can override
1718 * - decoding: set by lavc, user can override
1719 */
1720 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1721
1722 /**
1723 * Thread opaque.
1724 * can be used by execute() to store some per AVCodecContext stuff.
1725 * - encoding: set by execute()
1726 * - decoding: set by execute()
1727 */
1728 void *thread_opaque;
1729
1730 /**
1731 * Motion estimation threshold. under which no motion estimation is
1732 * performed, but instead the user specified motion vectors are used
1733 *
1734 * - encoding: set by user
1735 * - decoding: unused
1736 */
1737 int me_threshold;
1738
1739 /**
1740 * Macroblock threshold. under which the user specified macroblock types will be used
1741 * - encoding: set by user
1742 * - decoding: unused
1743 */
1744 int mb_threshold;
1745
1746 /**
1747 * precision of the intra dc coefficient - 8.
1748 * - encoding: set by user
1749 * - decoding: unused
1750 */
1751 int intra_dc_precision;
1752
1753 /**
1754 * noise vs. sse weight for the nsse comparsion function.
1755 * - encoding: set by user
1756 * - decoding: unused
1757 */
1758 int nsse_weight;
1759
1760 /**
1761 * number of macroblock rows at the top which are skipped.
1762 * - encoding: unused
1763 * - decoding: set by user
1764 */
1765 int skip_top;
1766
1767 /**
1768 * number of macroblock rows at the bottom which are skipped.
1769 * - encoding: unused
1770 * - decoding: set by user
1771 */
1772 int skip_bottom;
1773
1774 /**
1775 * profile
1776 * - encoding: set by user
1777 * - decoding: set by lavc
1778 */
1779 int profile;
1780 #define FF_PROFILE_UNKNOWN -99
1781
1782 /**
1783 * level
1784 * - encoding: set by user
1785 * - decoding: set by lavc
1786 */
1787 int level;
1788 #define FF_LEVEL_UNKNOWN -99
1789
1790 /**
1791 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1792 * - encoding: unused
1793 * - decoding: set by user
1794 */
1795 int lowres;
1796
1797 /**
1798 * bitsream width / height. may be different from width/height if lowres
1799 * or other things are used
1800 * - encoding: unused
1801 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1802 */
1803 int coded_width, coded_height;
1804
1805 /**
1806 * frame skip threshold
1807 * - encoding: set by user
1808 * - decoding: unused
1809 */
1810 int frame_skip_threshold;
1811
1812 /**
1813 * frame skip factor
1814 * - encoding: set by user
1815 * - decoding: unused
1816 */
1817 int frame_skip_factor;
1818
1819 /**
1820 * frame skip exponent
1821 * - encoding: set by user
1822 * - decoding: unused
1823 */
1824 int frame_skip_exp;
1825
1826 /**
1827 * frame skip comparission function
1828 * - encoding: set by user.
1829 * - decoding: unused
1830 */
1831 int frame_skip_cmp;
1832
1833 /**
1834 * border processing masking. raises the quantizer for mbs on the borders
1835 * of the picture.
1836 * - encoding: set by user
1837 * - decoding: unused
1838 */
1839 float border_masking;
1840
1841 /**
1842 * minimum MB lagrange multipler.
1843 * - encoding: set by user.
1844 * - decoding: unused
1845 */
1846 int mb_lmin;
1847
1848 /**
1849 * maximum MB lagrange multipler.
1850 * - encoding: set by user.
1851 * - decoding: unused
1852 */
1853 int mb_lmax;
1854
1855 /**
1856 *
1857 * - encoding: set by user.
1858 * - decoding: unused
1859 */
1860 int me_penalty_compensation;
1861
1862 /**
1863 *
1864 * - encoding: unused
1865 * - decoding: set by user.
1866 */
1867 enum AVDiscard skip_loop_filter;
1868
1869 /**
1870 *
1871 * - encoding: unused
1872 * - decoding: set by user.
1873 */
1874 enum AVDiscard skip_idct;
1875
1876 /**
1877 *
1878 * - encoding: unused
1879 * - decoding: set by user.
1880 */
1881 enum AVDiscard skip_frame;
1882
1883 /**
1884 *
1885 * - encoding: set by user.
1886 * - decoding: unused
1887 */
1888 int bidir_refine;
1889
1890 /**
1891 *
1892 * - encoding: set by user.
1893 * - decoding: unused
1894 */
1895 int brd_scale;
1896
1897 /**
1898 * constant rate factor - quality-based VBR - values ~correspond to qps
1899 * - encoding: set by user.
1900 * - decoding: unused
1901 */
1902 int crf;
1903
1904 /**
1905 * constant quantization parameter rate control method
1906 * - encoding: set by user.
1907 * - decoding: unused
1908 */
1909 int cqp;
1910
1911 /**
1912 * minimum gop size
1913 * - encoding: set by user.
1914 * - decoding: unused
1915 */
1916 int keyint_min;
1917
1918 /**
1919 * number of reference frames
1920 * - encoding: set by user.
1921 * - decoding: unused
1922 */
1923 int refs;
1924
1925 /**
1926 * chroma qp offset from luma
1927 * - encoding: set by user.
1928 * - decoding: unused
1929 */
1930 int chromaoffset;
1931
1932 /**
1933 * influences how often b-frames are used
1934 * - encoding: set by user.
1935 * - decoding: unused
1936 */
1937 int bframebias;
1938
1939 /**
1940 * trellis RD quantization
1941 * - encoding: set by user.
1942 * - decoding: unused
1943 */
1944 int trellis;
1945
1946 /**
1947 * reduce fluctuations in qp (before curve compression)
1948 * - encoding: set by user.
1949 * - decoding: unused
1950 */
1951 float complexityblur;
1952
1953 /**
1954 * in-loop deblocking filter alphac0 parameter
1955 * alpha is in the range -6...6
1956 * - encoding: set by user.
1957 * - decoding: unused
1958 */
1959 int deblockalpha;
1960
1961 /**
1962 * in-loop deblocking filter beta parameter
1963 * beta is in the range -6...6
1964 * - encoding: set by user.
1965 * - decoding: unused
1966 */
1967 int deblockbeta;
1968
1969 /**
1970 * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1971 * - encoding: set by user.
1972 * - decoding: unused
1973 */
1974 int partitions;
1975 #define X264_PART_I4X4 0x001 /* Analyse i4x4 */
1976 #define X264_PART_I8X8 0x002 /* Analyse i8x8 (requires 8x8 transform) */
1977 #define X264_PART_P8X8 0x010 /* Analyse p16x8, p8x16 and p8x8 */
1978 #define X264_PART_P4X4 0x020 /* Analyse p8x4, p4x8, p4x4 */
1979 #define X264_PART_B8X8 0x100 /* Analyse b16x8, b8x16 and b8x8 */
1980
1981 /**
1982 * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1983 * - encoding: set by user.
1984 * - decoding: unused
1985 */
1986 int directpred;
1987
1988 /**
1989 * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
1990 * - encoding: set by user.
1991 * - decoding: unused
1992 */
1993 int cutoff;
1994
1995 /**
1996 * multiplied by qscale for each frame and added to scene_change_score
1997 * - encoding: set by user.
1998 * - decoding: unused
1999 */
2000 int scenechange_factor;
2001 } AVCodecContext;
2002
2003 /**
2004 * AVCodec.
2005 */
2006 typedef struct AVCodec {
2007 const char *name;
2008 enum CodecType type;
2009 enum CodecID id;
2010 int priv_data_size;
2011 int (*init)(AVCodecContext *);
2012 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2013 int (*close)(AVCodecContext *);
2014 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2015 uint8_t *buf, int buf_size);
2016 int capabilities;
2017 #if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
2018 void *dummy; // FIXME remove next time we break binary compatibility
2019 #endif
2020 struct AVCodec *next;
2021 void (*flush)(AVCodecContext *);
2022 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2023 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2024 } AVCodec;
2025
2026 /**
2027 * four components are given, that's all.
2028 * the last component is alpha
2029 */
2030 typedef struct AVPicture {
2031 uint8_t *data[4];
2032 int linesize[4]; ///< number of bytes per line
2033 } AVPicture;
2034
2035 /**
2036 * AVPaletteControl
2037 * This structure defines a method for communicating palette changes
2038 * between and demuxer and a decoder.
2039 */
2040 #define AVPALETTE_SIZE 1024
2041 #define AVPALETTE_COUNT 256
2042 typedef struct AVPaletteControl {
2043
2044 /* demuxer sets this to 1 to indicate the palette has changed;
2045 * decoder resets to 0 */
2046 int palette_changed;
2047
2048 /* 4-byte ARGB palette entries, stored in native byte order; note that
2049 * the individual palette components should be on a 8-bit scale; if
2050 * the palette data comes from a IBM VGA native format, the component
2051 * data is probably 6 bits in size and needs to be scaled */
2052 unsigned int palette[AVPALETTE_COUNT];
2053
2054 } AVPaletteControl;
2055
2056 typedef struct AVSubtitleRect {
2057 uint16_t x;
2058 uint16_t y;
2059 uint16_t w;
2060 uint16_t h;
2061 uint16_t nb_colors;
2062 int linesize;
2063 uint32_t *rgba_palette;
2064 uint8_t *bitmap;
2065 } AVSubtitleRect;
2066
2067 typedef struct AVSubtitle {
2068 uint16_t format; /* 0 = graphics */
2069 uint32_t start_display_time; /* relative to packet pts, in ms */
2070 uint32_t end_display_time; /* relative to packet pts, in ms */
2071 uint32_t num_rects;
2072 AVSubtitleRect *rects;
2073 } AVSubtitle;
2074
2075 extern AVCodec ac3_encoder;
2076 extern AVCodec mp2_encoder;
2077 extern AVCodec mp3lame_encoder;
2078 extern AVCodec oggvorbis_encoder;
2079 extern AVCodec oggtheora_encoder;
2080 extern AVCodec faac_encoder;
2081 extern AVCodec xvid_encoder;
2082 extern AVCodec mpeg1video_encoder;
2083 extern AVCodec mpeg2video_encoder;
2084 extern AVCodec h261_encoder;
2085 extern AVCodec h263_encoder;
2086 extern AVCodec h263p_encoder;
2087 extern AVCodec flv_encoder;
2088 extern AVCodec rv10_encoder;
2089 extern AVCodec rv20_encoder;
2090 extern AVCodec dvvideo_encoder;
2091 extern AVCodec mjpeg_encoder;
2092 extern AVCodec ljpeg_encoder;
2093 extern AVCodec jpegls_encoder;
2094 extern AVCodec png_encoder;
2095 extern AVCodec ppm_encoder;
2096 extern AVCodec pgm_encoder;
2097 extern AVCodec pgmyuv_encoder;
2098 extern AVCodec pbm_encoder;
2099 extern AVCodec pam_encoder;
2100 extern AVCodec mpeg4_encoder;
2101 extern AVCodec msmpeg4v1_encoder;
2102 extern AVCodec msmpeg4v2_encoder;
2103 extern AVCodec msmpeg4v3_encoder;
2104 extern AVCodec wmv1_encoder;
2105 extern AVCodec wmv2_encoder;
2106 extern AVCodec huffyuv_encoder;
2107 extern AVCodec ffvhuff_encoder;
2108 extern AVCodec h264_encoder;
2109 extern AVCodec asv1_encoder;
2110 extern AVCodec asv2_encoder;
2111 extern AVCodec vcr1_encoder;
2112 extern AVCodec ffv1_encoder;
2113 extern AVCodec snow_encoder;
2114 extern AVCodec mdec_encoder;
2115 extern AVCodec zlib_encoder;
2116 extern AVCodec sonic_encoder;
2117 extern AVCodec sonic_ls_encoder;
2118 extern AVCodec svq1_encoder;
2119 extern AVCodec x264_encoder;
2120
2121 extern AVCodec h263_decoder;
2122 extern AVCodec h261_decoder;
2123 extern AVCodec mpeg4_decoder;
2124 extern AVCodec msmpeg4v1_decoder;
2125 extern AVCodec msmpeg4v2_decoder;
2126 extern AVCodec msmpeg4v3_decoder;
2127 extern AVCodec wmv1_decoder;
2128 extern AVCodec wmv2_decoder;
2129 extern AVCodec vc9_decoder;
2130 extern AVCodec wmv3_decoder;
2131 extern AVCodec mpeg1video_decoder;
2132 extern AVCodec mpeg2video_decoder;
2133 extern AVCodec mpegvideo_decoder;
2134 extern AVCodec mpeg_xvmc_decoder;
2135 extern AVCodec h263i_decoder;
2136 extern AVCodec flv_decoder;
2137 extern AVCodec rv10_decoder;
2138 extern AVCodec rv20_decoder;
2139 extern AVCodec rv30_decoder;
2140 extern AVCodec rv40_decoder;
2141 extern AVCodec svq1_decoder;
2142 extern AVCodec svq3_decoder;
2143 extern AVCodec dvvideo_decoder;
2144 extern AVCodec wmav1_decoder;
2145 extern AVCodec wmav2_decoder;
2146 extern AVCodec mjpeg_decoder;
2147 extern AVCodec mjpegb_decoder;
2148 extern AVCodec sp5x_decoder;
2149 extern AVCodec png_decoder;
2150 extern AVCodec mp2_decoder;
2151 extern AVCodec mp3_decoder;
2152 extern AVCodec mp3adu_decoder;
2153 extern AVCodec mp3on4_decoder;
2154 extern AVCodec qdm2_decoder;
2155 extern AVCodec cook_decoder;
2156 extern AVCodec truespeech_decoder;
2157 extern AVCodec mace3_decoder;
2158 extern AVCodec mace6_decoder;
2159 extern AVCodec huffyuv_decoder;
2160 extern AVCodec ffvhuff_decoder;
2161 extern AVCodec oggvorbis_decoder;
2162 extern AVCodec oggtheora_decoder;
2163 extern AVCodec cyuv_decoder;
2164 extern AVCodec h264_decoder;
2165 extern AVCodec indeo3_decoder;
2166 extern AVCodec vp3_decoder;
2167 extern AVCodec theora_decoder;
2168 extern AVCodec amr_nb_decoder;
2169 extern AVCodec amr_nb_encoder;
2170 extern AVCodec amr_wb_encoder;
2171 extern AVCodec amr_wb_decoder;
2172 extern AVCodec aac_decoder;
2173 extern AVCodec mpeg4aac_decoder;
2174 extern AVCodec asv1_decoder;
2175 extern AVCodec asv2_decoder;
2176 extern AVCodec vcr1_decoder;
2177 extern AVCodec cljr_decoder;
2178 extern AVCodec ffv1_decoder;
2179 extern AVCodec snow_decoder;
2180 extern AVCodec fourxm_decoder;
2181 extern AVCodec mdec_decoder;
2182 extern AVCodec roq_decoder;
2183 extern AVCodec interplay_video_decoder;
2184 extern AVCodec xan_wc3_decoder;
2185 extern AVCodec rpza_decoder;
2186 extern AVCodec cinepak_decoder;
2187 extern AVCodec msrle_decoder;
2188 extern AVCodec msvideo1_decoder;
2189 extern AVCodec vqa_decoder;
2190 extern AVCodec idcin_decoder;
2191 extern AVCodec eightbps_decoder;
2192 extern AVCodec smc_decoder;
2193 extern AVCodec flic_decoder;
2194 extern AVCodec vmdvideo_decoder;
2195 extern AVCodec vmdaudio_decoder;
2196 extern AVCodec truemotion1_decoder;
2197 extern AVCodec truemotion2_decoder;
2198 extern AVCodec mszh_decoder;
2199 extern AVCodec zlib_decoder;
2200 extern AVCodec ra_144_decoder;
2201 extern AVCodec ra_288_decoder;
2202 extern AVCodec roq_dpcm_decoder;
2203 extern AVCodec interplay_dpcm_decoder;
2204 extern AVCodec xan_dpcm_decoder;
2205 extern AVCodec sol_dpcm_decoder;
2206 extern AVCodec sonic_decoder;
2207 extern AVCodec qtrle_decoder;
2208 extern AVCodec flac_decoder;
2209 extern AVCodec tscc_decoder;
2210 extern AVCodec cscd_decoder;
2211 extern AVCodec ulti_decoder;
2212 extern AVCodec qdraw_decoder;
2213 extern AVCodec xl_decoder;
2214 extern AVCodec qpeg_decoder;
2215 extern AVCodec shorten_decoder;
2216 extern AVCodec loco_decoder;
2217 extern AVCodec wnv1_decoder;
2218 extern AVCodec aasc_decoder;
2219 extern AVCodec alac_decoder;
2220 extern AVCodec ws_snd1_decoder;
2221 extern AVCodec indeo2_decoder;
2222 extern AVCodec vorbis_decoder;
2223 extern AVCodec fraps_decoder;
2224 extern AVCodec libgsm_encoder;
2225 extern AVCodec libgsm_decoder;
2226 extern AVCodec bmp_decoder;
2227
2228 /* pcm codecs */
2229 #define PCM_CODEC(id, name) \
2230 extern AVCodec name ## _decoder; \
2231 extern AVCodec name ## _encoder
2232
2233 PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2234 PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2235 PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2236 PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2237 PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2238 PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2239 PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2240 PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2241 PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2242 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2243 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2244 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2245 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2246 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2247 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2248 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2249 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2250
2251 /* adpcm codecs */
2252
2253 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2254 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2255 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2256 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2257 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2258 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2259 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2260 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2261 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2262 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2263 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2264 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2265 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2266 PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2267 PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2268
2269 #undef PCM_CODEC
2270
2271 /* dummy raw video codec */
2272 extern AVCodec rawvideo_encoder;
2273 extern AVCodec rawvideo_decoder;
2274
2275 /* the following codecs use external GPL libs */
2276 extern AVCodec ac3_decoder;
2277 extern AVCodec dts_decoder;
2278
2279 /* subtitles */
2280 extern AVCodec dvdsub_encoder;
2281 extern AVCodec dvdsub_decoder;
2282 extern AVCodec dvbsub_encoder;
2283 extern AVCodec dvbsub_decoder;
2284
2285 /* resample.c */
2286
2287 struct ReSampleContext;
2288 struct AVResampleContext;
2289
2290 typedef struct ReSampleContext ReSampleContext;
2291
2292 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2293 int output_rate, int input_rate);
2294 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2295 void audio_resample_close(ReSampleContext *s);
2296
2297 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2298 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2299 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2300 void av_resample_close(struct AVResampleContext *c);
2301
2302 /* YUV420 format is assumed ! */
2303
2304 struct ImgReSampleContext;
2305
2306 typedef struct ImgReSampleContext ImgReSampleContext;
2307
2308 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2309 int input_width, int input_height);
2310
2311 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2312 int iwidth, int iheight,
2313 int topBand, int bottomBand,
2314 int leftBand, int rightBand,
2315 int padtop, int padbottom,
2316 int padleft, int padright);
2317
2318
2319 void img_resample(ImgReSampleContext *s,
2320 AVPicture *output, const AVPicture *input);
2321
2322 void img_resample_close(ImgReSampleContext *s);
2323
2324 /**
2325 * Allocate memory for a picture. Call avpicture_free to free it.
2326 *
2327 * @param picture the picture to be filled in.
2328 * @param pix_fmt the format of the picture.
2329 * @param width the width of the picture.
2330 * @param height the height of the picture.
2331 * @return 0 if successful, -1 if not.
2332 */
2333 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2334
2335 /* Free a picture previously allocated by avpicture_alloc. */
2336 void avpicture_free(AVPicture *picture);
2337
2338 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2339 int pix_fmt, int width, int height);
2340 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2341 unsigned char *dest, int dest_size);
2342 int avpicture_get_size(int pix_fmt, int width, int height);
2343 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2344 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2345 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2346 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2347 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2348
2349 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2350 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2351 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2352 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2353 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2354 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2355
2356 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2357 int has_alpha);
2358 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2359 int has_alpha, int *loss_ptr);
2360
2361 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2362 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2363 int img_get_alpha_info(const AVPicture *src,
2364 int pix_fmt, int width, int height);
2365
2366 /* convert among pixel formats */
2367 int img_convert(AVPicture *dst, int dst_pix_fmt,
2368 const AVPicture *src, int pix_fmt,
2369 int width, int height);
2370
2371 /* deinterlace a picture */
2372 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2373 int pix_fmt, int width, int height);
2374
2375 /* external high level API */
2376
2377 extern AVCodec *first_avcodec;
2378
2379 /* returns LIBAVCODEC_VERSION_INT constant */
2380 unsigned avcodec_version(void);
2381 /* returns LIBAVCODEC_BUILD constant */
2382 unsigned avcodec_build(void);
2383 void avcodec_init(void);
2384
2385 void register_avcodec(AVCodec *format);
2386 AVCodec *avcodec_find_encoder(enum CodecID id);
2387 AVCodec *avcodec_find_encoder_by_name(const char *name);
2388 AVCodec *avcodec_find_decoder(enum CodecID id);
2389 AVCodec *avcodec_find_decoder_by_name(const char *name);
2390 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2391
2392 void avcodec_get_context_defaults(AVCodecContext *s);
2393 AVCodecContext *avcodec_alloc_context(void);
2394 void avcodec_get_frame_defaults(AVFrame *pic);
2395 AVFrame *avcodec_alloc_frame(void);
2396
2397 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2398 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2399 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2400 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2401 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2402 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2403
2404 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2405 void avcodec_thread_free(AVCodecContext *s);
2406 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2407 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2408 //FIXME func typedef
2409
2410 /**
2411 * opens / inits the AVCodecContext.
2412 * not thread save!
2413 */
2414 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2415
2416 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2417 int *frame_size_ptr,
2418 uint8_t *buf, int buf_size);
2419 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2420 int *got_picture_ptr,
2421 uint8_t *buf, int buf_size);
2422 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2423 int *got_sub_ptr,
2424 const uint8_t *buf, int buf_size);
2425 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2426 int *data_size_ptr,
2427 uint8_t *buf, int buf_size);
2428 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2429 const short *samples);
2430 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2431 const AVFrame *pict);
2432 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2433 const AVSubtitle *sub);
2434
2435 int avcodec_close(AVCodecContext *avctx);
2436
2437 void avcodec_register_all(void);
2438
2439 void avcodec_flush_buffers(AVCodecContext *avctx);
2440
2441 void avcodec_default_free_buffers(AVCodecContext *s);
2442
2443 /* misc usefull functions */
2444
2445 /**
2446 * returns a single letter to describe the picture type
2447 */
2448 char av_get_pict_type_char(int pict_type);
2449
2450
2451 /* frame parsing */
2452 typedef struct AVCodecParserContext {
2453 void *priv_data;
2454 struct AVCodecParser *parser;
2455 int64_t frame_offset; /* offset of the current frame */
2456 int64_t cur_offset; /* current offset
2457 (incremented by each av_parser_parse()) */
2458 int64_t last_frame_offset; /* offset of the last frame */
2459 /* video info */
2460 int pict_type; /* XXX: put it back in AVCodecContext */
2461 int repeat_pict; /* XXX: put it back in AVCodecContext */
2462 int64_t pts; /* pts of the current frame */
2463 int64_t dts; /* dts of the current frame */
2464
2465 /* private data */
2466 int64_t last_pts;
2467 int64_t last_dts;
2468 int fetch_timestamp;
2469
2470 #define AV_PARSER_PTS_NB 4
2471 int cur_frame_start_index;
2472 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2473 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2474 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2475
2476 int flags;
2477 #define PARSER_FLAG_COMPLETE_FRAMES 0x0001
2478 } AVCodecParserContext;
2479
2480 typedef struct AVCodecParser {
2481 int codec_ids[5]; /* several codec IDs are permitted */
2482 int priv_data_size;
2483 int (*parser_init)(AVCodecParserContext *s);
2484 int (*parser_parse)(AVCodecParserContext *s,
2485 AVCodecContext *avctx,
2486 uint8_t **poutbuf, int *poutbuf_size,
2487 const uint8_t *buf, int buf_size);
2488 void (*parser_close)(AVCodecParserContext *s);
2489 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2490 struct AVCodecParser *next;
2491 } AVCodecParser;
2492
2493 extern AVCodecParser *av_first_parser;
2494
2495 void av_register_codec_parser(AVCodecParser *parser);
2496 AVCodecParserContext *av_parser_init(int codec_id);
2497 int av_parser_parse(AVCodecParserContext *s,
2498 AVCodecContext *avctx,
2499 uint8_t **poutbuf, int *poutbuf_size,
2500 const uint8_t *buf, int buf_size,
2501 int64_t pts, int64_t dts);
2502 int av_parser_change(AVCodecParserContext *s,
2503 AVCodecContext *avctx,
2504 uint8_t **poutbuf, int *poutbuf_size,
2505 const uint8_t *buf, int buf_size, int keyframe);
2506 void av_parser_close(AVCodecParserContext *s);
2507
2508 extern AVCodecParser mpegvideo_parser;
2509 extern AVCodecParser mpeg4video_parser;
2510 extern AVCodecParser h261_parser;
2511 extern AVCodecParser h263_parser;
2512 extern AVCodecParser h264_parser;
2513 extern AVCodecParser mjpeg_parser;
2514 extern AVCodecParser pnm_parser;
2515 extern AVCodecParser mpegaudio_parser;
2516 extern AVCodecParser ac3_parser;
2517 extern AVCodecParser dvdsub_parser;
2518 extern AVCodecParser dvbsub_parser;
2519 extern AVCodecParser aac_parser;
2520
2521 /* memory */
2522 void *av_malloc(unsigned int size);
2523 void *av_mallocz(unsigned int size);
2524 void *av_realloc(void *ptr, unsigned int size);
2525 void av_free(void *ptr);
2526 char *av_strdup(const char *s);
2527 void av_freep(void *ptr);
2528 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2529 /* for static data only */
2530 /* call av_free_static to release all staticaly allocated tables */
2531 void av_free_static(void);
2532 void *av_mallocz_static(unsigned int size);
2533 void *av_realloc_static(void *ptr, unsigned int size);
2534
2535 /* add by bero : in adx.c */
2536 int is_adx(const unsigned char *buf,size_t bufsize);
2537
2538 void img_copy(AVPicture *dst, const AVPicture *src,
2539 int pix_fmt, int width, int height);
2540
2541 /* av_log API */
2542
2543 #include <stdarg.h>
2544
2545 #define AV_LOG_QUIET -1
2546 #define AV_LOG_ERROR 0
2547 #define AV_LOG_INFO 1
2548 #define AV_LOG_DEBUG 2
2549
2550 #ifdef __GNUC__
2551 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2552 #else
2553 extern void av_log(void*, int level, const char *fmt, ...);
2554 #endif
2555
2556 extern void av_vlog(void*, int level, const char *fmt, va_list);
2557 extern int av_log_get_level(void);
2558 extern void av_log_set_level(int);
2559 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2560
2561 /* endian macros */
2562 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2563 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2564 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2565 (((uint8_t*)(x))[1] << 16) | \
2566 (((uint8_t*)(x))[2] << 8) | \
2567 ((uint8_t*)(x))[3])
2568 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2569 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2570 (((uint8_t*)(x))[2] << 16) | \
2571 (((uint8_t*)(x))[1] << 8) | \
2572 ((uint8_t*)(x))[0])
2573 #endif
2574
2575 extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2576
2577 #ifdef __cplusplus
2578 }
2579 #endif
2580
2581 #endif /* AVCODEC_H */