complete American Laser Games MM playback system, courtesy of Peter Ross
[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 CODEC_ID_MMVIDEO,
119
120 /* various pcm "codecs" */
121 CODEC_ID_PCM_S16LE= 0x10000,
122 CODEC_ID_PCM_S16BE,
123 CODEC_ID_PCM_U16LE,
124 CODEC_ID_PCM_U16BE,
125 CODEC_ID_PCM_S8,
126 CODEC_ID_PCM_U8,
127 CODEC_ID_PCM_MULAW,
128 CODEC_ID_PCM_ALAW,
129 CODEC_ID_PCM_S32LE,
130 CODEC_ID_PCM_S32BE,
131 CODEC_ID_PCM_U32LE,
132 CODEC_ID_PCM_U32BE,
133 CODEC_ID_PCM_S24LE,
134 CODEC_ID_PCM_S24BE,
135 CODEC_ID_PCM_U24LE,
136 CODEC_ID_PCM_U24BE,
137 CODEC_ID_PCM_S24DAUD,
138
139 /* various adpcm codecs */
140 CODEC_ID_ADPCM_IMA_QT= 0x11000,
141 CODEC_ID_ADPCM_IMA_WAV,
142 CODEC_ID_ADPCM_IMA_DK3,
143 CODEC_ID_ADPCM_IMA_DK4,
144 CODEC_ID_ADPCM_IMA_WS,
145 CODEC_ID_ADPCM_IMA_SMJPEG,
146 CODEC_ID_ADPCM_MS,
147 CODEC_ID_ADPCM_4XM,
148 CODEC_ID_ADPCM_XA,
149 CODEC_ID_ADPCM_ADX,
150 CODEC_ID_ADPCM_EA,
151 CODEC_ID_ADPCM_G726,
152 CODEC_ID_ADPCM_CT,
153 CODEC_ID_ADPCM_SWF,
154 CODEC_ID_ADPCM_YAMAHA,
155
156 /* AMR */
157 CODEC_ID_AMR_NB= 0x12000,
158 CODEC_ID_AMR_WB,
159
160 /* RealAudio codecs*/
161 CODEC_ID_RA_144= 0x13000,
162 CODEC_ID_RA_288,
163
164 /* various DPCM codecs */
165 CODEC_ID_ROQ_DPCM= 0x14000,
166 CODEC_ID_INTERPLAY_DPCM,
167 CODEC_ID_XAN_DPCM,
168 CODEC_ID_SOL_DPCM,
169
170 CODEC_ID_MP2= 0x15000,
171 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
172 CODEC_ID_AAC,
173 CODEC_ID_MPEG4AAC,
174 CODEC_ID_AC3,
175 CODEC_ID_DTS,
176 CODEC_ID_VORBIS,
177 CODEC_ID_DVAUDIO,
178 CODEC_ID_WMAV1,
179 CODEC_ID_WMAV2,
180 CODEC_ID_MACE3,
181 CODEC_ID_MACE6,
182 CODEC_ID_VMDAUDIO,
183 CODEC_ID_SONIC,
184 CODEC_ID_SONIC_LS,
185 CODEC_ID_FLAC,
186 CODEC_ID_MP3ADU,
187 CODEC_ID_MP3ON4,
188 CODEC_ID_SHORTEN,
189 CODEC_ID_ALAC,
190 CODEC_ID_WESTWOOD_SND1,
191 CODEC_ID_GSM,
192 CODEC_ID_QDM2,
193 CODEC_ID_COOK,
194 CODEC_ID_TRUESPEECH,
195 CODEC_ID_TTA,
196
197 CODEC_ID_OGGTHEORA= 0x16000,
198
199 /* subtitle codecs */
200 CODEC_ID_DVD_SUBTITLE= 0x17000,
201 CODEC_ID_DVB_SUBTITLE,
202
203 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
204 stream (only used by libavformat) */
205 };
206
207 /* CODEC_ID_MP3LAME is absolete */
208 #define CODEC_ID_MP3LAME CODEC_ID_MP3
209
210 enum CodecType {
211 CODEC_TYPE_UNKNOWN = -1,
212 CODEC_TYPE_VIDEO,
213 CODEC_TYPE_AUDIO,
214 CODEC_TYPE_DATA,
215 CODEC_TYPE_SUBTITLE,
216 };
217
218 /**
219 * Pixel format. Notes:
220 *
221 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
222 * color is put together as:
223 * (A << 24) | (R << 16) | (G << 8) | B
224 * This is stored as BGRA on little endian CPU architectures and ARGB on
225 * big endian CPUs.
226 *
227 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
228 * image data is stored in AVFrame.data[0]. The palette is transported in
229 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
230 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
231 * also endian-specific). Note also that the individual RGB palette
232 * components stored in AVFrame.data[1] should be in the range 0..255.
233 * This is important as many custom PAL8 video codecs that were designed
234 * to run on the IBM VGA graphics adapter use 6-bit palette components.
235 */
236 enum PixelFormat {
237 PIX_FMT_NONE= -1,
238 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
239 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
240 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
241 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
242 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
243 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
244 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
245 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
246 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
247 PIX_FMT_RGB565, ///< always stored in cpu endianness
248 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
249 PIX_FMT_GRAY8,
250 PIX_FMT_MONOWHITE, ///< 0 is white
251 PIX_FMT_MONOBLACK, ///< 0 is black
252 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
253 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
254 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
255 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
256 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
257 PIX_FMT_XVMC_MPEG2_IDCT,
258 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
259 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
260 PIX_FMT_NB,
261 };
262
263 /* currently unused, may be used if 24/32 bits samples ever supported */
264 enum SampleFormat {
265 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
266 SAMPLE_FMT_S32, ///< signed 32 bits
267 SAMPLE_FMT_FLT, ///< float
268 SAMPLE_FMT_DBL, ///< double
269 };
270
271 /* in bytes */
272 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
273
274 /**
275 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
276 * this is mainly needed because some optimized bitstream readers read
277 * 32 or 64 bit at once and could read over the end<br>
278 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
279 * MPEG bitstreams could cause overread and segfault
280 */
281 #define FF_INPUT_BUFFER_PADDING_SIZE 8
282
283 /**
284 * minimum encoding buffer size.
285 * used to avoid some checks during header writing
286 */
287 #define FF_MIN_BUFFER_SIZE 16384
288
289 /* motion estimation type, EPZS by default */
290 enum Motion_Est_ID {
291 ME_ZERO = 1,
292 ME_FULL,
293 ME_LOG,
294 ME_PHODS,
295 ME_EPZS,
296 ME_X1,
297 ME_HEX,
298 ME_UMH,
299 ME_ITER,
300 };
301
302 enum AVDiscard{
303 //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
304 AVDISCARD_NONE =-16, ///< discard nothing
305 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
306 AVDISCARD_NONREF = 8, ///< discard all non reference
307 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
308 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
309 AVDISCARD_ALL = 48, ///< discard all
310 };
311
312 typedef struct RcOverride{
313 int start_frame;
314 int end_frame;
315 int qscale; // if this is 0 then quality_factor will be used instead
316 float quality_factor;
317 } RcOverride;
318
319 /* only for ME compatiblity with old apps */
320 extern int motion_estimation_method;
321
322 #define FF_MAX_B_FRAMES 8
323
324 /* encoding support
325 these flags can be passed in AVCodecContext.flags before initing
326 Note: not everything is supported yet.
327 */
328
329 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
330 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
331 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
332 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
333 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
334 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
335 /* parent program gurantees that the input for b-frame containing streams is not written to
336 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
337 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
338 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
339 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
340 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
341 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
342 #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
343 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
344 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
345 of only at frame boundaries */
346 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
347 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
348 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
349 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
350 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
351 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
352 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
353 /* Fx : Flag for h263+ extra options */
354 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
355 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
356 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
357 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
358 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
359 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
360 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
361 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
362 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
363 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
364 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
365 #define CODEC_FLAG_CLOSED_GOP 0x80000000
366 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
367 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
368 #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
369 #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
370 #define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow b-frames to be used as references
371 #define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for b-frames
372 #define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 multiple references per partition
373 #define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform
374 #define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip
375 #define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters
376 #define CODEC_FLAG2_BRDO 0x00000400 ///< b-frame rate-distortion optimization
377
378 /* Unsupported options :
379 * Syntax Arithmetic coding (SAC)
380 * Reference Picture Selection
381 * Independant Segment Decoding */
382 /* /Fx */
383 /* codec capabilities */
384
385 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
386 /**
387 * Codec uses get_buffer() for allocating buffers.
388 * direct rendering method 1
389 */
390 #define CODEC_CAP_DR1 0x0002
391 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
392 used */
393 #define CODEC_CAP_PARSE_ONLY 0x0004
394 #define CODEC_CAP_TRUNCATED 0x0008
395 /* codec can export data for HW decoding (XvMC) */
396 #define CODEC_CAP_HWACCEL 0x0010
397 /**
398 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
399 * if this is not set, the codec is guranteed to never be feeded with NULL data
400 */
401 #define CODEC_CAP_DELAY 0x0020
402
403 //the following defines may change, don't expect compatibility if you use them
404 #define MB_TYPE_INTRA4x4 0x0001
405 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
406 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
407 #define MB_TYPE_16x16 0x0008
408 #define MB_TYPE_16x8 0x0010
409 #define MB_TYPE_8x16 0x0020
410 #define MB_TYPE_8x8 0x0040
411 #define MB_TYPE_INTERLACED 0x0080
412 #define MB_TYPE_DIRECT2 0x0100 //FIXME
413 #define MB_TYPE_ACPRED 0x0200
414 #define MB_TYPE_GMC 0x0400
415 #define MB_TYPE_SKIP 0x0800
416 #define MB_TYPE_P0L0 0x1000
417 #define MB_TYPE_P1L0 0x2000
418 #define MB_TYPE_P0L1 0x4000
419 #define MB_TYPE_P1L1 0x8000
420 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
421 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
422 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
423 #define MB_TYPE_QUANT 0x00010000
424 #define MB_TYPE_CBP 0x00020000
425 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
426
427 /**
428 * Pan Scan area.
429 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
430 */
431 typedef struct AVPanScan{
432 /**
433 * id.
434 * - encoding: set by user.
435 * - decoding: set by lavc
436 */
437 int id;
438
439 /**
440 * width and height in 1/16 pel
441 * - encoding: set by user.
442 * - decoding: set by lavc
443 */
444 int width;
445 int height;
446
447 /**
448 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
449 * - encoding: set by user.
450 * - decoding: set by lavc
451 */
452 int16_t position[3][2];
453 }AVPanScan;
454
455 #define FF_COMMON_FRAME \
456 /**\
457 * pointer to the picture planes.\
458 * this might be different from the first allocated byte\
459 * - encoding: \
460 * - decoding: \
461 */\
462 uint8_t *data[4];\
463 int linesize[4];\
464 /**\
465 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
466 * this isn't used by lavc unless the default get/release_buffer() is used\
467 * - encoding: \
468 * - decoding: \
469 */\
470 uint8_t *base[4];\
471 /**\
472 * 1 -> keyframe, 0-> not\
473 * - encoding: set by lavc\
474 * - decoding: set by lavc\
475 */\
476 int key_frame;\
477 \
478 /**\
479 * picture type of the frame, see ?_TYPE below.\
480 * - encoding: set by lavc for coded_picture (and set by user for input)\
481 * - decoding: set by lavc\
482 */\
483 int pict_type;\
484 \
485 /**\
486 * presentation timestamp in time_base units (time when frame should be shown to user)\
487 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
488 * - encoding: MUST be set by user\
489 * - decoding: set by lavc\
490 */\
491 int64_t pts;\
492 \
493 /**\
494 * picture number in bitstream order.\
495 * - encoding: set by\
496 * - decoding: set by lavc\
497 */\
498 int coded_picture_number;\
499 /**\
500 * picture number in display order.\
501 * - encoding: set by\
502 * - decoding: set by lavc\
503 */\
504 int display_picture_number;\
505 \
506 /**\
507 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
508 * - encoding: set by lavc for coded_picture (and set by user for input)\
509 * - decoding: set by lavc\
510 */\
511 int quality; \
512 \
513 /**\
514 * buffer age (1->was last buffer and dint change, 2->..., ...).\
515 * set to INT_MAX if the buffer has not been used yet \
516 * - encoding: unused\
517 * - decoding: MUST be set by get_buffer()\
518 */\
519 int age;\
520 \
521 /**\
522 * is this picture used as reference\
523 * - encoding: unused\
524 * - decoding: set by lavc (before get_buffer() call))\
525 */\
526 int reference;\
527 \
528 /**\
529 * QP table\
530 * - encoding: unused\
531 * - decoding: set by lavc\
532 */\
533 int8_t *qscale_table;\
534 /**\
535 * QP store stride\
536 * - encoding: unused\
537 * - decoding: set by lavc\
538 */\
539 int qstride;\
540 \
541 /**\
542 * mbskip_table[mb]>=1 if MB didnt change\
543 * stride= mb_width = (width+15)>>4\
544 * - encoding: unused\
545 * - decoding: set by lavc\
546 */\
547 uint8_t *mbskip_table;\
548 \
549 /**\
550 * Motion vector table.\
551 * @code\
552 * example:\
553 * int mv_sample_log2= 4 - motion_subsample_log2;\
554 * int mb_width= (width+15)>>4;\
555 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
556 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
557 * @endcode\
558 * - encoding: set by user\
559 * - decoding: set by lavc\
560 */\
561 int16_t (*motion_val[2])[2];\
562 \
563 /**\
564 * Macroblock type table\
565 * mb_type_base + mb_width + 2\
566 * - encoding: set by user\
567 * - decoding: set by lavc\
568 */\
569 uint32_t *mb_type;\
570 \
571 /**\
572 * log2 of the size of the block which a single vector in motion_val represents: \
573 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
574 * - encoding: unused\
575 * - decoding: set by lavc\
576 */\
577 uint8_t motion_subsample_log2;\
578 \
579 /**\
580 * for some private data of the user\
581 * - encoding: unused\
582 * - decoding: set by user\
583 */\
584 void *opaque;\
585 \
586 /**\
587 * error\
588 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
589 * - decoding: unused\
590 */\
591 uint64_t error[4];\
592 \
593 /**\
594 * type of the buffer (to keep track of who has to dealloc data[*])\
595 * - encoding: set by the one who allocs it\
596 * - decoding: set by the one who allocs it\
597 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
598 */\
599 int type;\
600 \
601 /**\
602 * when decoding, this signal how much the picture must be delayed.\
603 * extra_delay = repeat_pict / (2*fps)\
604 * - encoding: unused\
605 * - decoding: set by lavc\
606 */\
607 int repeat_pict;\
608 \
609 /**\
610 * \
611 */\
612 int qscale_type;\
613 \
614 /**\
615 * The content of the picture is interlaced.\
616 * - encoding: set by user\
617 * - decoding: set by lavc (default 0)\
618 */\
619 int interlaced_frame;\
620 \
621 /**\
622 * if the content is interlaced, is top field displayed first.\
623 * - encoding: set by user\
624 * - decoding: set by lavc\
625 */\
626 int top_field_first;\
627 \
628 /**\
629 * Pan scan.\
630 * - encoding: set by user\
631 * - decoding: set by lavc\
632 */\
633 AVPanScan *pan_scan;\
634 \
635 /**\
636 * tell user application that palette has changed from previous frame.\
637 * - encoding: ??? (no palette-enabled encoder yet)\
638 * - decoding: set by lavc (default 0)\
639 */\
640 int palette_has_changed;\
641 \
642 /**\
643 * Codec suggestion on buffer type if != 0\
644 * - encoding: unused\
645 * - decoding: set by lavc (before get_buffer() call))\
646 */\
647 int buffer_hints;\
648 \
649 /**\
650 * DCT coeffitients\
651 * - encoding: unused\
652 * - decoding: set by lavc\
653 */\
654 short *dct_coeff;\
655 \
656 /**\
657 * Motion referece frame index\
658 * - encoding: set by user\
659 * - decoding: set by lavc\
660 */\
661 int8_t *ref_index[2];
662
663 #define FF_QSCALE_TYPE_MPEG1 0
664 #define FF_QSCALE_TYPE_MPEG2 1
665 #define FF_QSCALE_TYPE_H264 2
666
667 #define FF_BUFFER_TYPE_INTERNAL 1
668 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
669 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
670 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
671
672
673 #define FF_I_TYPE 1 // Intra
674 #define FF_P_TYPE 2 // Predicted
675 #define FF_B_TYPE 3 // Bi-dir predicted
676 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
677 #define FF_SI_TYPE 5
678 #define FF_SP_TYPE 6
679
680 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
681 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
682 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
683 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
684
685 /**
686 * Audio Video Frame.
687 */
688 typedef struct AVFrame {
689 FF_COMMON_FRAME
690 } AVFrame;
691
692 #define DEFAULT_FRAME_RATE_BASE 1001000
693
694 /**
695 * Used by av_log
696 */
697 typedef struct AVCLASS AVClass;
698 struct AVCLASS {
699 const char* class_name;
700 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
701 or AVFormatContext, which begin with an AVClass.
702 Needed because av_log is in libavcodec and has no visibility
703 of AVIn/OutputFormat */
704 struct AVOption *option;
705 };
706
707 /**
708 * main external api structure.
709 */
710 typedef struct AVCodecContext {
711 /**
712 * Info on struct for av_log
713 * - set by avcodec_alloc_context
714 */
715 AVClass *av_class;
716 /**
717 * the average bitrate.
718 * - encoding: set by user. unused for constant quantizer encoding
719 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
720 */
721 int bit_rate;
722
723 /**
724 * number of bits the bitstream is allowed to diverge from the reference.
725 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
726 * - encoding: set by user. unused for constant quantizer encoding
727 * - decoding: unused
728 */
729 int bit_rate_tolerance;
730
731 /**
732 * CODEC_FLAG_*.
733 * - encoding: set by user.
734 * - decoding: set by user.
735 */
736 int flags;
737
738 /**
739 * some codecs needs additionnal format info. It is stored here
740 * - encoding: set by user.
741 * - decoding: set by lavc. (FIXME is this ok?)
742 */
743 int sub_id;
744
745 /**
746 * motion estimation algorithm used for video coding.
747 * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
748 * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
749 * - encoding: MUST be set by user.
750 * - decoding: unused
751 */
752 int me_method;
753
754 /**
755 * some codecs need / can use extra-data like huffman tables.
756 * mjpeg: huffman tables
757 * rv10: additional flags
758 * mpeg4: global headers (they can be in the bitstream or here)
759 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
760 * then extradata_size to avoid prolems if its read with the bitstream reader
761 * the bytewise contents of extradata must not depend on the architecture or cpu endianness
762 * - encoding: set/allocated/freed by lavc.
763 * - decoding: set/allocated/freed by user.
764 */
765 void *extradata;
766 int extradata_size;
767
768 /**
769 * this is the fundamental unit of time (in seconds) in terms
770 * of which frame timestamps are represented. for fixed-fps content,
771 * timebase should be 1/framerate and timestamp increments should be
772 * identically 1.
773 * - encoding: MUST be set by user
774 * - decoding: set by lavc.
775 */
776 AVRational time_base;
777
778 /* video only */
779 /**
780 * picture width / height.
781 * - encoding: MUST be set by user.
782 * - decoding: set by lavc.
783 * Note, for compatibility its possible to set this instead of
784 * coded_width/height before decoding
785 */
786 int width, height;
787
788 #define FF_ASPECT_EXTENDED 15
789
790 /**
791 * the number of pictures in a group of pitures, or 0 for intra_only.
792 * - encoding: set by user.
793 * - decoding: unused
794 */
795 int gop_size;
796
797 /**
798 * pixel format, see PIX_FMT_xxx.
799 * - encoding: set by user.
800 * - decoding: set by lavc.
801 */
802 enum PixelFormat pix_fmt;
803
804 /**
805 * Frame rate emulation. If not zero lower layer (i.e. format handler)
806 * has to read frames at native frame rate.
807 * - encoding: set by user.
808 * - decoding: unused.
809 */
810 int rate_emu;
811
812 /**
813 * if non NULL, 'draw_horiz_band' is called by the libavcodec
814 * decoder to draw an horizontal band. It improve cache usage. Not
815 * all codecs can do that. You must check the codec capabilities
816 * before
817 * - encoding: unused
818 * - decoding: set by user.
819 * @param height the height of the slice
820 * @param y the y position of the slice
821 * @param type 1->top field, 2->bottom field, 3->frame
822 * @param offset offset into the AVFrame.data from which the slice should be read
823 */
824 void (*draw_horiz_band)(struct AVCodecContext *s,
825 const AVFrame *src, int offset[4],
826 int y, int type, int height);
827
828 /* audio only */
829 int sample_rate; ///< samples per sec
830 int channels;
831
832 /**
833 * audio sample format.
834 * - encoding: set by user.
835 * - decoding: set by lavc.
836 */
837 enum SampleFormat sample_fmt; ///< sample format, currenly unused
838
839 /* the following data should not be initialized */
840 /**
841 * samples per packet. initialized when calling 'init'
842 */
843 int frame_size;
844 int frame_number; ///< audio or video frame number
845 int real_pict_num; ///< returns the real picture number of previous encoded frame
846
847 /**
848 * number of frames the decoded output will be delayed relative to
849 * the encoded input.
850 * - encoding: set by lavc.
851 * - decoding: unused
852 */
853 int delay;
854
855 /* - encoding parameters */
856 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
857 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
858
859 /**
860 * minimum quantizer.
861 * - encoding: set by user.
862 * - decoding: unused
863 */
864 int qmin;
865
866 /**
867 * maximum quantizer.
868 * - encoding: set by user.
869 * - decoding: unused
870 */
871 int qmax;
872
873 /**
874 * maximum quantizer difference etween frames.
875 * - encoding: set by user.
876 * - decoding: unused
877 */
878 int max_qdiff;
879
880 /**
881 * maximum number of b frames between non b frames.
882 * note: the output will be delayed by max_b_frames+1 relative to the input
883 * - encoding: set by user.
884 * - decoding: unused
885 */
886 int max_b_frames;
887
888 /**
889 * qscale factor between ip and b frames.
890 * - encoding: set by user.
891 * - decoding: unused
892 */
893 float b_quant_factor;
894
895 /** obsolete FIXME remove */
896 int rc_strategy;
897 #define FF_RC_STRATEGY_XVID 1
898
899 int b_frame_strategy;
900
901 /**
902 * hurry up amount.
903 * deprecated in favor of skip_idct and skip_frame
904 * - encoding: unused
905 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
906 */
907 int hurry_up;
908
909 struct AVCodec *codec;
910
911 void *priv_data;
912
913 /* unused, FIXME remove*/
914 int rtp_mode;
915
916 int rtp_payload_size; /* The size of the RTP payload: the coder will */
917 /* do it's best to deliver a chunk with size */
918 /* below rtp_payload_size, the chunk will start */
919 /* with a start code on some codecs like H.263 */
920 /* This doesn't take account of any particular */
921 /* headers inside the transmited RTP payload */
922
923
924 /* The RTP callback: This function is called */
925 /* every time the encoder has a packet to send */
926 /* Depends on the encoder if the data starts */
927 /* with a Start Code (it should) H.263 does. */
928 /* mb_nb contains the number of macroblocks */
929 /* encoded in the RTP payload */
930 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
931
932 /* statistics, used for 2-pass encoding */
933 int mv_bits;
934 int header_bits;
935 int i_tex_bits;
936 int p_tex_bits;
937 int i_count;
938 int p_count;
939 int skip_count;
940 int misc_bits;
941
942 /**
943 * number of bits used for the previously encoded frame.
944 * - encoding: set by lavc
945 * - decoding: unused
946 */
947 int frame_bits;
948
949 /**
950 * private data of the user, can be used to carry app specific stuff.
951 * - encoding: set by user
952 * - decoding: set by user
953 */
954 void *opaque;
955
956 char codec_name[32];
957 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
958 enum CodecID codec_id; /* see CODEC_ID_xxx */
959
960 /**
961 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
962 * this is used to workaround some encoder bugs
963 * - encoding: set by user, if not then the default based on codec_id will be used
964 * - decoding: set by user, will be converted to upper case by lavc during init
965 */
966 unsigned int codec_tag;
967
968 /**
969 * workaround bugs in encoders which sometimes cannot be detected automatically.
970 * - encoding: set by user
971 * - decoding: set by user
972 */
973 int workaround_bugs;
974 #define FF_BUG_AUTODETECT 1 ///< autodetection
975 #define FF_BUG_OLD_MSMPEG4 2
976 #define FF_BUG_XVID_ILACE 4
977 #define FF_BUG_UMP4 8
978 #define FF_BUG_NO_PADDING 16
979 #define FF_BUG_AMV 32
980 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
981 #define FF_BUG_QPEL_CHROMA 64
982 #define FF_BUG_STD_QPEL 128
983 #define FF_BUG_QPEL_CHROMA2 256
984 #define FF_BUG_DIRECT_BLOCKSIZE 512
985 #define FF_BUG_EDGE 1024
986 #define FF_BUG_HPEL_CHROMA 2048
987 #define FF_BUG_DC_CLIP 4096
988 #define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
989 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
990
991 /**
992 * luma single coeff elimination threshold.
993 * - encoding: set by user
994 * - decoding: unused
995 */
996 int luma_elim_threshold;
997
998 /**
999 * chroma single coeff elimination threshold.
1000 * - encoding: set by user
1001 * - decoding: unused
1002 */
1003 int chroma_elim_threshold;
1004
1005 /**
1006 * strictly follow the std (MPEG4, ...).
1007 * - encoding: set by user
1008 * - decoding: unused
1009 */
1010 int strict_std_compliance;
1011 #define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
1012 #define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
1013 #define FF_COMPLIANCE_NORMAL 0
1014 #define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
1015 #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
1016
1017 /**
1018 * qscale offset between ip and b frames.
1019 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1020 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1021 * - encoding: set by user.
1022 * - decoding: unused
1023 */
1024 float b_quant_offset;
1025
1026 /**
1027 * error resilience higher values will detect more errors but may missdetect
1028 * some more or less valid parts as errors.
1029 * - encoding: unused
1030 * - decoding: set by user
1031 */
1032 int error_resilience;
1033 #define FF_ER_CAREFUL 1
1034 #define FF_ER_COMPLIANT 2
1035 #define FF_ER_AGGRESSIVE 3
1036 #define FF_ER_VERY_AGGRESSIVE 4
1037
1038 /**
1039 * called at the beginning of each frame to get a buffer for it.
1040 * if pic.reference is set then the frame will be read later by lavc
1041 * avcodec_align_dimensions() should be used to find the required width and
1042 * height, as they normally need to be rounded up to the next multiple of 16
1043 * - encoding: unused
1044 * - decoding: set by lavc, user can override
1045 */
1046 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1047
1048 /**
1049 * called to release buffers which where allocated with get_buffer.
1050 * a released buffer can be reused in get_buffer()
1051 * pic.data[*] must be set to NULL
1052 * - encoding: unused
1053 * - decoding: set by lavc, user can override
1054 */
1055 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1056
1057 /**
1058 * if 1 the stream has a 1 frame delay during decoding.
1059 * - encoding: set by lavc
1060 * - decoding: set by lavc
1061 */
1062 int has_b_frames;
1063
1064 /**
1065 * number of bytes per packet if constant and known or 0
1066 * used by some WAV based audio codecs
1067 */
1068 int block_align;
1069
1070 int parse_only; /* - decoding only: if true, only parsing is done
1071 (function avcodec_parse_frame()). The frame
1072 data is returned. Only MPEG codecs support this now. */
1073
1074 /**
1075 * 0-> h263 quant 1-> mpeg quant.
1076 * - encoding: set by user.
1077 * - decoding: unused
1078 */
1079 int mpeg_quant;
1080
1081 /**
1082 * pass1 encoding statistics output buffer.
1083 * - encoding: set by lavc
1084 * - decoding: unused
1085 */
1086 char *stats_out;
1087
1088 /**
1089 * pass2 encoding statistics input buffer.
1090 * concatenated stuff from stats_out of pass1 should be placed here
1091 * - encoding: allocated/set/freed by user
1092 * - decoding: unused
1093 */
1094 char *stats_in;
1095
1096 /**
1097 * ratecontrol qmin qmax limiting method.
1098 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1099 * - encoding: set by user.
1100 * - decoding: unused
1101 */
1102 float rc_qsquish;
1103
1104 float rc_qmod_amp;
1105 int rc_qmod_freq;
1106
1107 /**
1108 * ratecontrol override, see RcOverride.
1109 * - encoding: allocated/set/freed by user.
1110 * - decoding: unused
1111 */
1112 RcOverride *rc_override;
1113 int rc_override_count;
1114
1115 /**
1116 * rate control equation.
1117 * - encoding: set by user
1118 * - decoding: unused
1119 */
1120 char *rc_eq;
1121
1122 /**
1123 * maximum bitrate.
1124 * - encoding: set by user.
1125 * - decoding: unused
1126 */
1127 int rc_max_rate;
1128
1129 /**
1130 * minimum bitrate.
1131 * - encoding: set by user.
1132 * - decoding: unused
1133 */
1134 int rc_min_rate;
1135
1136 /**
1137 * decoder bitstream buffer size.
1138 * - encoding: set by user.
1139 * - decoding: unused
1140 */
1141 int rc_buffer_size;
1142 float rc_buffer_aggressivity;
1143
1144 /**
1145 * qscale factor between p and i frames.
1146 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1147 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1148 * - encoding: set by user.
1149 * - decoding: unused
1150 */
1151 float i_quant_factor;
1152
1153 /**
1154 * qscale offset between p and i frames.
1155 * - encoding: set by user.
1156 * - decoding: unused
1157 */
1158 float i_quant_offset;
1159
1160 /**
1161 * initial complexity for pass1 ratecontrol.
1162 * - encoding: set by user.
1163 * - decoding: unused
1164 */
1165 float rc_initial_cplx;
1166
1167 /**
1168 * dct algorithm, see FF_DCT_* below.
1169 * - encoding: set by user
1170 * - decoding: unused
1171 */
1172 int dct_algo;
1173 #define FF_DCT_AUTO 0
1174 #define FF_DCT_FASTINT 1
1175 #define FF_DCT_INT 2
1176 #define FF_DCT_MMX 3
1177 #define FF_DCT_MLIB 4
1178 #define FF_DCT_ALTIVEC 5
1179 #define FF_DCT_FAAN 6
1180
1181 /**
1182 * luminance masking (0-> disabled).
1183 * - encoding: set by user
1184 * - decoding: unused
1185 */
1186 float lumi_masking;
1187
1188 /**
1189 * temporary complexity masking (0-> disabled).
1190 * - encoding: set by user
1191 * - decoding: unused
1192 */
1193 float temporal_cplx_masking;
1194
1195 /**
1196 * spatial complexity masking (0-> disabled).
1197 * - encoding: set by user
1198 * - decoding: unused
1199 */
1200 float spatial_cplx_masking;
1201
1202 /**
1203 * p block masking (0-> disabled).
1204 * - encoding: set by user
1205 * - decoding: unused
1206 */
1207 float p_masking;
1208
1209 /**
1210 * darkness masking (0-> disabled).
1211 * - encoding: set by user
1212 * - decoding: unused
1213 */
1214 float dark_masking;
1215
1216
1217 /* for binary compatibility */
1218 int unused;
1219
1220 /**
1221 * idct algorithm, see FF_IDCT_* below.
1222 * - encoding: set by user
1223 * - decoding: set by user
1224 */
1225 int idct_algo;
1226 #define FF_IDCT_AUTO 0
1227 #define FF_IDCT_INT 1
1228 #define FF_IDCT_SIMPLE 2
1229 #define FF_IDCT_SIMPLEMMX 3
1230 #define FF_IDCT_LIBMPEG2MMX 4
1231 #define FF_IDCT_PS2 5
1232 #define FF_IDCT_MLIB 6
1233 #define FF_IDCT_ARM 7
1234 #define FF_IDCT_ALTIVEC 8
1235 #define FF_IDCT_SH4 9
1236 #define FF_IDCT_SIMPLEARM 10
1237 #define FF_IDCT_H264 11
1238 #define FF_IDCT_VP3 12
1239 #define FF_IDCT_IPP 13
1240 #define FF_IDCT_XVIDMMX 14
1241
1242 /**
1243 * slice count.
1244 * - encoding: set by lavc
1245 * - decoding: set by user (or 0)
1246 */
1247 int slice_count;
1248 /**
1249 * slice offsets in the frame in bytes.
1250 * - encoding: set/allocated by lavc
1251 * - decoding: set/allocated by user (or NULL)
1252 */
1253 int *slice_offset;
1254
1255 /**
1256 * error concealment flags.
1257 * - encoding: unused
1258 * - decoding: set by user
1259 */
1260 int error_concealment;
1261 #define FF_EC_GUESS_MVS 1
1262 #define FF_EC_DEBLOCK 2
1263
1264 /**
1265 * dsp_mask could be add used to disable unwanted CPU features
1266 * CPU features (i.e. MMX, SSE. ...)
1267 *
1268 * with FORCE flag you may instead enable given CPU features
1269 * (Dangerous: usable in case of misdetection, improper usage however will
1270 * result into program crash)
1271 */
1272 unsigned dsp_mask;
1273 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1274 /* lower 16 bits - CPU features */
1275 #ifdef HAVE_MMX
1276 #define FF_MM_MMX 0x0001 /* standard MMX */
1277 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1278 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1279 #define FF_MM_SSE 0x0008 /* SSE functions */
1280 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1281 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1282 #endif /* HAVE_MMX */
1283 #ifdef HAVE_IWMMXT
1284 #define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
1285 #endif /* HAVE_IWMMXT */
1286
1287 /**
1288 * bits per sample/pixel from the demuxer (needed for huffyuv).
1289 * - encoding: set by lavc
1290 * - decoding: set by user
1291 */
1292 int bits_per_sample;
1293
1294 /**
1295 * prediction method (needed for huffyuv).
1296 * - encoding: set by user
1297 * - decoding: unused
1298 */
1299 int prediction_method;
1300 #define FF_PRED_LEFT 0
1301 #define FF_PRED_PLANE 1
1302 #define FF_PRED_MEDIAN 2
1303
1304 /**
1305 * sample aspect ratio (0 if unknown).
1306 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1307 * - encoding: set by user.
1308 * - decoding: set by lavc.
1309 */
1310 AVRational sample_aspect_ratio;
1311
1312 /**
1313 * the picture in the bitstream.
1314 * - encoding: set by lavc
1315 * - decoding: set by lavc
1316 */
1317 AVFrame *coded_frame;
1318
1319 /**
1320 * debug.
1321 * - encoding: set by user.
1322 * - decoding: set by user.
1323 */
1324 int debug;
1325 #define FF_DEBUG_PICT_INFO 1
1326 #define FF_DEBUG_RC 2
1327 #define FF_DEBUG_BITSTREAM 4
1328 #define FF_DEBUG_MB_TYPE 8
1329 #define FF_DEBUG_QP 16
1330 #define FF_DEBUG_MV 32
1331 #define FF_DEBUG_DCT_COEFF 0x00000040
1332 #define FF_DEBUG_SKIP 0x00000080
1333 #define FF_DEBUG_STARTCODE 0x00000100
1334 #define FF_DEBUG_PTS 0x00000200
1335 #define FF_DEBUG_ER 0x00000400
1336 #define FF_DEBUG_MMCO 0x00000800
1337 #define FF_DEBUG_BUGS 0x00001000
1338 #define FF_DEBUG_VIS_QP 0x00002000
1339 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1340
1341 /**
1342 * debug.
1343 * - encoding: set by user.
1344 * - decoding: set by user.
1345 */
1346 int debug_mv;
1347 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1348 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1349 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1350
1351 /**
1352 * error.
1353 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1354 * - decoding: unused
1355 */
1356 uint64_t error[4];
1357
1358 /**
1359 * minimum MB quantizer.
1360 * - encoding: unused
1361 * - decoding: unused
1362 */
1363 int mb_qmin;
1364
1365 /**
1366 * maximum MB quantizer.
1367 * - encoding: unused
1368 * - decoding: unused
1369 */
1370 int mb_qmax;
1371
1372 /**
1373 * motion estimation compare function.
1374 * - encoding: set by user.
1375 * - decoding: unused
1376 */
1377 int me_cmp;
1378 /**
1379 * subpixel motion estimation compare function.
1380 * - encoding: set by user.
1381 * - decoding: unused
1382 */
1383 int me_sub_cmp;
1384 /**
1385 * macroblock compare function (not supported yet).
1386 * - encoding: set by user.
1387 * - decoding: unused
1388 */
1389 int mb_cmp;
1390 /**
1391 * interlaced dct compare function
1392 * - encoding: set by user.
1393 * - decoding: unused
1394 */
1395 int ildct_cmp;
1396 #define FF_CMP_SAD 0
1397 #define FF_CMP_SSE 1
1398 #define FF_CMP_SATD 2
1399 #define FF_CMP_DCT 3
1400 #define FF_CMP_PSNR 4
1401 #define FF_CMP_BIT 5
1402 #define FF_CMP_RD 6
1403 #define FF_CMP_ZERO 7
1404 #define FF_CMP_VSAD 8
1405 #define FF_CMP_VSSE 9
1406 #define FF_CMP_NSSE 10
1407 #define FF_CMP_W53 11
1408 #define FF_CMP_W97 12
1409 #define FF_CMP_DCTMAX 13
1410 #define FF_CMP_DCT264 14
1411 #define FF_CMP_CHROMA 256
1412
1413 /**
1414 * ME diamond size & shape.
1415 * - encoding: set by user.
1416 * - decoding: unused
1417 */
1418 int dia_size;
1419
1420 /**
1421 * amount of previous MV predictors (2a+1 x 2a+1 square).
1422 * - encoding: set by user.
1423 * - decoding: unused
1424 */
1425 int last_predictor_count;
1426
1427 /**
1428 * pre pass for motion estimation.
1429 * - encoding: set by user.
1430 * - decoding: unused
1431 */
1432 int pre_me;
1433
1434 /**
1435 * motion estimation pre pass compare function.
1436 * - encoding: set by user.
1437 * - decoding: unused
1438 */
1439 int me_pre_cmp;
1440
1441 /**
1442 * ME pre pass diamond size & shape.
1443 * - encoding: set by user.
1444 * - decoding: unused
1445 */
1446 int pre_dia_size;
1447
1448 /**
1449 * subpel ME quality.
1450 * - encoding: set by user.
1451 * - decoding: unused
1452 */
1453 int me_subpel_quality;
1454
1455 /**
1456 * callback to negotiate the pixelFormat.
1457 * @param fmt is the list of formats which are supported by the codec,
1458 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1459 * the first is allways the native one
1460 * @return the choosen format
1461 * - encoding: unused
1462 * - decoding: set by user, if not set then the native format will always be choosen
1463 */
1464 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1465
1466 /**
1467 * DTG active format information (additionnal aspect ratio
1468 * information only used in DVB MPEG2 transport streams). 0 if
1469 * not set.
1470 *
1471 * - encoding: unused.
1472 * - decoding: set by decoder
1473 */
1474 int dtg_active_format;
1475 #define FF_DTG_AFD_SAME 8
1476 #define FF_DTG_AFD_4_3 9
1477 #define FF_DTG_AFD_16_9 10
1478 #define FF_DTG_AFD_14_9 11
1479 #define FF_DTG_AFD_4_3_SP_14_9 13
1480 #define FF_DTG_AFD_16_9_SP_14_9 14
1481 #define FF_DTG_AFD_SP_4_3 15
1482
1483 /**
1484 * Maximum motion estimation search range in subpel units.
1485 * if 0 then no limit
1486 *
1487 * - encoding: set by user.
1488 * - decoding: unused.
1489 */
1490 int me_range;
1491
1492 /**
1493 * intra quantizer bias.
1494 * - encoding: set by user.
1495 * - decoding: unused
1496 */
1497 int intra_quant_bias;
1498 #define FF_DEFAULT_QUANT_BIAS 999999
1499
1500 /**
1501 * inter quantizer bias.
1502 * - encoding: set by user.
1503 * - decoding: unused
1504 */
1505 int inter_quant_bias;
1506
1507 /**
1508 * color table ID.
1509 * - encoding: unused.
1510 * - decoding: which clrtable should be used for 8bit RGB images
1511 * table have to be stored somewhere FIXME
1512 */
1513 int color_table_id;
1514
1515 /**
1516 * internal_buffer count.
1517 * Don't touch, used by lavc default_get_buffer()
1518 */
1519 int internal_buffer_count;
1520
1521 /**
1522 * internal_buffers.
1523 * Don't touch, used by lavc default_get_buffer()
1524 */
1525 void *internal_buffer;
1526
1527 #define FF_LAMBDA_SHIFT 7
1528 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1529 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1530 #define FF_LAMBDA_MAX (256*128-1)
1531
1532 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1533 /**
1534 * global quality for codecs which cannot change it per frame.
1535 * this should be proportional to MPEG1/2/4 qscale.
1536 * - encoding: set by user.
1537 * - decoding: unused
1538 */
1539 int global_quality;
1540
1541 #define FF_CODER_TYPE_VLC 0
1542 #define FF_CODER_TYPE_AC 1
1543 /**
1544 * coder type
1545 * - encoding: set by user.
1546 * - decoding: unused
1547 */
1548 int coder_type;
1549
1550 /**
1551 * context model
1552 * - encoding: set by user.
1553 * - decoding: unused
1554 */
1555 int context_model;
1556 #if 0
1557 /**
1558 *
1559 * - encoding: unused
1560 * - decoding: set by user.
1561 */
1562 uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1563 #endif
1564
1565 /**
1566 * slice flags
1567 * - encoding: unused
1568 * - decoding: set by user.
1569 */
1570 int slice_flags;
1571 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1572 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1573 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1574
1575 /**
1576 * XVideo Motion Acceleration
1577 * - encoding: forbidden
1578 * - decoding: set by decoder
1579 */
1580 int xvmc_acceleration;
1581
1582 /**
1583 * macroblock decision mode
1584 * - encoding: set by user.
1585 * - decoding: unused
1586 */
1587 int mb_decision;
1588 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1589 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1590 #define FF_MB_DECISION_RD 2 ///< rate distoration
1591
1592 /**
1593 * custom intra quantization matrix
1594 * - encoding: set by user, can be NULL
1595 * - decoding: set by lavc
1596 */
1597 uint16_t *intra_matrix;
1598
1599 /**
1600 * custom inter quantization matrix
1601 * - encoding: set by user, can be NULL
1602 * - decoding: set by lavc
1603 */
1604 uint16_t *inter_matrix;
1605
1606 /**
1607 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1608 * this is used to workaround some encoder bugs
1609 * - encoding: unused
1610 * - decoding: set by user, will be converted to upper case by lavc during init
1611 */
1612 unsigned int stream_codec_tag;
1613
1614 /**
1615 * scene change detection threshold.
1616 * 0 is default, larger means fewer detected scene changes
1617 * - encoding: set by user.
1618 * - decoding: unused
1619 */
1620 int scenechange_threshold;
1621
1622 /**
1623 * minimum lagrange multipler
1624 * - encoding: set by user.
1625 * - decoding: unused
1626 */
1627 int lmin;
1628
1629 /**
1630 * maximum lagrange multipler
1631 * - encoding: set by user.
1632 * - decoding: unused
1633 */
1634 int lmax;
1635
1636 /**
1637 * Palette control structure
1638 * - encoding: ??? (no palette-enabled encoder yet)
1639 * - decoding: set by user.
1640 */
1641 struct AVPaletteControl *palctrl;
1642
1643 /**
1644 * noise reduction strength
1645 * - encoding: set by user.
1646 * - decoding: unused
1647 */
1648 int noise_reduction;
1649
1650 /**
1651 * called at the beginning of a frame to get cr buffer for it.
1652 * buffer type (size, hints) must be the same. lavc won't check it.
1653 * lavc will pass previous buffer in pic, function should return
1654 * same buffer or new buffer with old frame "painted" into it.
1655 * if pic.data[0] == NULL must behave like get_buffer().
1656 * - encoding: unused
1657 * - decoding: set by lavc, user can override
1658 */
1659 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1660
1661 /**
1662 * number of bits which should be loaded into the rc buffer before decoding starts
1663 * - encoding: set by user.
1664 * - decoding: unused
1665 */
1666 int rc_initial_buffer_occupancy;
1667
1668 /**
1669 *
1670 * - encoding: set by user.
1671 * - decoding: unused
1672 */
1673 int inter_threshold;
1674
1675 /**
1676 * CODEC_FLAG2_*.
1677 * - encoding: set by user.
1678 * - decoding: set by user.
1679 */
1680 int flags2;
1681
1682 /**
1683 * simulates errors in the bitstream to test error concealment.
1684 * - encoding: set by user.
1685 * - decoding: unused.
1686 */
1687 int error_rate;
1688
1689 /**
1690 * MP3 antialias algorithm, see FF_AA_* below.
1691 * - encoding: unused
1692 * - decoding: set by user
1693 */
1694 int antialias_algo;
1695 #define FF_AA_AUTO 0
1696 #define FF_AA_FASTINT 1 //not implemented yet
1697 #define FF_AA_INT 2
1698 #define FF_AA_FLOAT 3
1699 /**
1700 * Quantizer noise shaping.
1701 * - encoding: set by user
1702 * - decoding: unused
1703 */
1704 int quantizer_noise_shaping;
1705
1706 /**
1707 * Thread count.
1708 * is used to decide how many independant tasks should be passed to execute()
1709 * - encoding: set by user
1710 * - decoding: set by user
1711 */
1712 int thread_count;
1713
1714 /**
1715 * the codec may call this to execute several independant things. it will return only after
1716 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1717 * default implementation will execute the parts serially
1718 * @param count the number of things to execute
1719 * - encoding: set by lavc, user can override
1720 * - decoding: set by lavc, user can override
1721 */
1722 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1723
1724 /**
1725 * Thread opaque.
1726 * can be used by execute() to store some per AVCodecContext stuff.
1727 * - encoding: set by execute()
1728 * - decoding: set by execute()
1729 */
1730 void *thread_opaque;
1731
1732 /**
1733 * Motion estimation threshold. under which no motion estimation is
1734 * performed, but instead the user specified motion vectors are used
1735 *
1736 * - encoding: set by user
1737 * - decoding: unused
1738 */
1739 int me_threshold;
1740
1741 /**
1742 * Macroblock threshold. under which the user specified macroblock types will be used
1743 * - encoding: set by user
1744 * - decoding: unused
1745 */
1746 int mb_threshold;
1747
1748 /**
1749 * precision of the intra dc coefficient - 8.
1750 * - encoding: set by user
1751 * - decoding: unused
1752 */
1753 int intra_dc_precision;
1754
1755 /**
1756 * noise vs. sse weight for the nsse comparsion function.
1757 * - encoding: set by user
1758 * - decoding: unused
1759 */
1760 int nsse_weight;
1761
1762 /**
1763 * number of macroblock rows at the top which are skipped.
1764 * - encoding: unused
1765 * - decoding: set by user
1766 */
1767 int skip_top;
1768
1769 /**
1770 * number of macroblock rows at the bottom which are skipped.
1771 * - encoding: unused
1772 * - decoding: set by user
1773 */
1774 int skip_bottom;
1775
1776 /**
1777 * profile
1778 * - encoding: set by user
1779 * - decoding: set by lavc
1780 */
1781 int profile;
1782 #define FF_PROFILE_UNKNOWN -99
1783
1784 /**
1785 * level
1786 * - encoding: set by user
1787 * - decoding: set by lavc
1788 */
1789 int level;
1790 #define FF_LEVEL_UNKNOWN -99
1791
1792 /**
1793 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1794 * - encoding: unused
1795 * - decoding: set by user
1796 */
1797 int lowres;
1798
1799 /**
1800 * bitsream width / height. may be different from width/height if lowres
1801 * or other things are used
1802 * - encoding: unused
1803 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1804 */
1805 int coded_width, coded_height;
1806
1807 /**
1808 * frame skip threshold
1809 * - encoding: set by user
1810 * - decoding: unused
1811 */
1812 int frame_skip_threshold;
1813
1814 /**
1815 * frame skip factor
1816 * - encoding: set by user
1817 * - decoding: unused
1818 */
1819 int frame_skip_factor;
1820
1821 /**
1822 * frame skip exponent
1823 * - encoding: set by user
1824 * - decoding: unused
1825 */
1826 int frame_skip_exp;
1827
1828 /**
1829 * frame skip comparission function
1830 * - encoding: set by user.
1831 * - decoding: unused
1832 */
1833 int frame_skip_cmp;
1834
1835 /**
1836 * border processing masking. raises the quantizer for mbs on the borders
1837 * of the picture.
1838 * - encoding: set by user
1839 * - decoding: unused
1840 */
1841 float border_masking;
1842
1843 /**
1844 * minimum MB lagrange multipler.
1845 * - encoding: set by user.
1846 * - decoding: unused
1847 */
1848 int mb_lmin;
1849
1850 /**
1851 * maximum MB lagrange multipler.
1852 * - encoding: set by user.
1853 * - decoding: unused
1854 */
1855 int mb_lmax;
1856
1857 /**
1858 *
1859 * - encoding: set by user.
1860 * - decoding: unused
1861 */
1862 int me_penalty_compensation;
1863
1864 /**
1865 *
1866 * - encoding: unused
1867 * - decoding: set by user.
1868 */
1869 enum AVDiscard skip_loop_filter;
1870
1871 /**
1872 *
1873 * - encoding: unused
1874 * - decoding: set by user.
1875 */
1876 enum AVDiscard skip_idct;
1877
1878 /**
1879 *
1880 * - encoding: unused
1881 * - decoding: set by user.
1882 */
1883 enum AVDiscard skip_frame;
1884
1885 /**
1886 *
1887 * - encoding: set by user.
1888 * - decoding: unused
1889 */
1890 int bidir_refine;
1891
1892 /**
1893 *
1894 * - encoding: set by user.
1895 * - decoding: unused
1896 */
1897 int brd_scale;
1898
1899 /**
1900 * constant rate factor - quality-based VBR - values ~correspond to qps
1901 * - encoding: set by user.
1902 * - decoding: unused
1903 */
1904 int crf;
1905
1906 /**
1907 * constant quantization parameter rate control method
1908 * - encoding: set by user.
1909 * - decoding: unused
1910 */
1911 int cqp;
1912
1913 /**
1914 * minimum gop size
1915 * - encoding: set by user.
1916 * - decoding: unused
1917 */
1918 int keyint_min;
1919
1920 /**
1921 * number of reference frames
1922 * - encoding: set by user.
1923 * - decoding: unused
1924 */
1925 int refs;
1926
1927 /**
1928 * chroma qp offset from luma
1929 * - encoding: set by user.
1930 * - decoding: unused
1931 */
1932 int chromaoffset;
1933
1934 /**
1935 * influences how often b-frames are used
1936 * - encoding: set by user.
1937 * - decoding: unused
1938 */
1939 int bframebias;
1940
1941 /**
1942 * trellis RD quantization
1943 * - encoding: set by user.
1944 * - decoding: unused
1945 */
1946 int trellis;
1947
1948 /**
1949 * reduce fluctuations in qp (before curve compression)
1950 * - encoding: set by user.
1951 * - decoding: unused
1952 */
1953 float complexityblur;
1954
1955 /**
1956 * in-loop deblocking filter alphac0 parameter
1957 * alpha is in the range -6...6
1958 * - encoding: set by user.
1959 * - decoding: unused
1960 */
1961 int deblockalpha;
1962
1963 /**
1964 * in-loop deblocking filter beta parameter
1965 * beta is in the range -6...6
1966 * - encoding: set by user.
1967 * - decoding: unused
1968 */
1969 int deblockbeta;
1970
1971 /**
1972 * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1973 * - encoding: set by user.
1974 * - decoding: unused
1975 */
1976 int partitions;
1977 #define X264_PART_I4X4 0x001 /* Analyse i4x4 */
1978 #define X264_PART_I8X8 0x002 /* Analyse i8x8 (requires 8x8 transform) */
1979 #define X264_PART_P8X8 0x010 /* Analyse p16x8, p8x16 and p8x8 */
1980 #define X264_PART_P4X4 0x020 /* Analyse p8x4, p4x8, p4x4 */
1981 #define X264_PART_B8X8 0x100 /* Analyse b16x8, b8x16 and b8x8 */
1982
1983 /**
1984 * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1985 * - encoding: set by user.
1986 * - decoding: unused
1987 */
1988 int directpred;
1989
1990 /**
1991 * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
1992 * - encoding: set by user.
1993 * - decoding: unused
1994 */
1995 int cutoff;
1996
1997 /**
1998 * multiplied by qscale for each frame and added to scene_change_score
1999 * - encoding: set by user.
2000 * - decoding: unused
2001 */
2002 int scenechange_factor;
2003 } AVCodecContext;
2004
2005 /**
2006 * AVCodec.
2007 */
2008 typedef struct AVCodec {
2009 const char *name;
2010 enum CodecType type;
2011 enum CodecID id;
2012 int priv_data_size;
2013 int (*init)(AVCodecContext *);
2014 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2015 int (*close)(AVCodecContext *);
2016 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2017 uint8_t *buf, int buf_size);
2018 int capabilities;
2019 #if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
2020 void *dummy; // FIXME remove next time we break binary compatibility
2021 #endif
2022 struct AVCodec *next;
2023 void (*flush)(AVCodecContext *);
2024 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2025 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2026 } AVCodec;
2027
2028 /**
2029 * four components are given, that's all.
2030 * the last component is alpha
2031 */
2032 typedef struct AVPicture {
2033 uint8_t *data[4];
2034 int linesize[4]; ///< number of bytes per line
2035 } AVPicture;
2036
2037 /**
2038 * AVPaletteControl
2039 * This structure defines a method for communicating palette changes
2040 * between and demuxer and a decoder.
2041 */
2042 #define AVPALETTE_SIZE 1024
2043 #define AVPALETTE_COUNT 256
2044 typedef struct AVPaletteControl {
2045
2046 /* demuxer sets this to 1 to indicate the palette has changed;
2047 * decoder resets to 0 */
2048 int palette_changed;
2049
2050 /* 4-byte ARGB palette entries, stored in native byte order; note that
2051 * the individual palette components should be on a 8-bit scale; if
2052 * the palette data comes from a IBM VGA native format, the component
2053 * data is probably 6 bits in size and needs to be scaled */
2054 unsigned int palette[AVPALETTE_COUNT];
2055
2056 } AVPaletteControl;
2057
2058 typedef struct AVSubtitleRect {
2059 uint16_t x;
2060 uint16_t y;
2061 uint16_t w;
2062 uint16_t h;
2063 uint16_t nb_colors;
2064 int linesize;
2065 uint32_t *rgba_palette;
2066 uint8_t *bitmap;
2067 } AVSubtitleRect;
2068
2069 typedef struct AVSubtitle {
2070 uint16_t format; /* 0 = graphics */
2071 uint32_t start_display_time; /* relative to packet pts, in ms */
2072 uint32_t end_display_time; /* relative to packet pts, in ms */
2073 uint32_t num_rects;
2074 AVSubtitleRect *rects;
2075 } AVSubtitle;
2076
2077 extern AVCodec ac3_encoder;
2078 extern AVCodec mp2_encoder;
2079 extern AVCodec mp3lame_encoder;
2080 extern AVCodec oggvorbis_encoder;
2081 extern AVCodec oggtheora_encoder;
2082 extern AVCodec faac_encoder;
2083 extern AVCodec xvid_encoder;
2084 extern AVCodec mpeg1video_encoder;
2085 extern AVCodec mpeg2video_encoder;
2086 extern AVCodec h261_encoder;
2087 extern AVCodec h263_encoder;
2088 extern AVCodec h263p_encoder;
2089 extern AVCodec flv_encoder;
2090 extern AVCodec rv10_encoder;
2091 extern AVCodec rv20_encoder;
2092 extern AVCodec dvvideo_encoder;
2093 extern AVCodec mjpeg_encoder;
2094 extern AVCodec ljpeg_encoder;
2095 extern AVCodec jpegls_encoder;
2096 extern AVCodec png_encoder;
2097 extern AVCodec ppm_encoder;
2098 extern AVCodec pgm_encoder;
2099 extern AVCodec pgmyuv_encoder;
2100 extern AVCodec pbm_encoder;
2101 extern AVCodec pam_encoder;
2102 extern AVCodec mpeg4_encoder;
2103 extern AVCodec msmpeg4v1_encoder;
2104 extern AVCodec msmpeg4v2_encoder;
2105 extern AVCodec msmpeg4v3_encoder;
2106 extern AVCodec wmv1_encoder;
2107 extern AVCodec wmv2_encoder;
2108 extern AVCodec huffyuv_encoder;
2109 extern AVCodec ffvhuff_encoder;
2110 extern AVCodec h264_encoder;
2111 extern AVCodec asv1_encoder;
2112 extern AVCodec asv2_encoder;
2113 extern AVCodec vcr1_encoder;
2114 extern AVCodec ffv1_encoder;
2115 extern AVCodec snow_encoder;
2116 extern AVCodec mdec_encoder;
2117 extern AVCodec zlib_encoder;
2118 extern AVCodec sonic_encoder;
2119 extern AVCodec sonic_ls_encoder;
2120 extern AVCodec svq1_encoder;
2121 extern AVCodec x264_encoder;
2122
2123 extern AVCodec h263_decoder;
2124 extern AVCodec h261_decoder;
2125 extern AVCodec mpeg4_decoder;
2126 extern AVCodec msmpeg4v1_decoder;
2127 extern AVCodec msmpeg4v2_decoder;
2128 extern AVCodec msmpeg4v3_decoder;
2129 extern AVCodec wmv1_decoder;
2130 extern AVCodec wmv2_decoder;
2131 extern AVCodec vc9_decoder;
2132 extern AVCodec wmv3_decoder;
2133 extern AVCodec mpeg1video_decoder;
2134 extern AVCodec mpeg2video_decoder;
2135 extern AVCodec mpegvideo_decoder;
2136 extern AVCodec mpeg_xvmc_decoder;
2137 extern AVCodec h263i_decoder;
2138 extern AVCodec flv_decoder;
2139 extern AVCodec rv10_decoder;
2140 extern AVCodec rv20_decoder;
2141 extern AVCodec rv30_decoder;
2142 extern AVCodec rv40_decoder;
2143 extern AVCodec svq1_decoder;
2144 extern AVCodec svq3_decoder;
2145 extern AVCodec dvvideo_decoder;
2146 extern AVCodec wmav1_decoder;
2147 extern AVCodec wmav2_decoder;
2148 extern AVCodec mjpeg_decoder;
2149 extern AVCodec mjpegb_decoder;
2150 extern AVCodec sp5x_decoder;
2151 extern AVCodec png_decoder;
2152 extern AVCodec mp2_decoder;
2153 extern AVCodec mp3_decoder;
2154 extern AVCodec mp3adu_decoder;
2155 extern AVCodec mp3on4_decoder;
2156 extern AVCodec qdm2_decoder;
2157 extern AVCodec cook_decoder;
2158 extern AVCodec truespeech_decoder;
2159 extern AVCodec tta_decoder;
2160 extern AVCodec mace3_decoder;
2161 extern AVCodec mace6_decoder;
2162 extern AVCodec huffyuv_decoder;
2163 extern AVCodec ffvhuff_decoder;
2164 extern AVCodec oggvorbis_decoder;
2165 extern AVCodec oggtheora_decoder;
2166 extern AVCodec cyuv_decoder;
2167 extern AVCodec h264_decoder;
2168 extern AVCodec indeo3_decoder;
2169 extern AVCodec vp3_decoder;
2170 extern AVCodec theora_decoder;
2171 extern AVCodec amr_nb_decoder;
2172 extern AVCodec amr_nb_encoder;
2173 extern AVCodec amr_wb_encoder;
2174 extern AVCodec amr_wb_decoder;
2175 extern AVCodec aac_decoder;
2176 extern AVCodec mpeg4aac_decoder;
2177 extern AVCodec asv1_decoder;
2178 extern AVCodec asv2_decoder;
2179 extern AVCodec vcr1_decoder;
2180 extern AVCodec cljr_decoder;
2181 extern AVCodec ffv1_decoder;
2182 extern AVCodec snow_decoder;
2183 extern AVCodec fourxm_decoder;
2184 extern AVCodec mdec_decoder;
2185 extern AVCodec roq_decoder;
2186 extern AVCodec interplay_video_decoder;
2187 extern AVCodec xan_wc3_decoder;
2188 extern AVCodec rpza_decoder;
2189 extern AVCodec cinepak_decoder;
2190 extern AVCodec msrle_decoder;
2191 extern AVCodec msvideo1_decoder;
2192 extern AVCodec vqa_decoder;
2193 extern AVCodec idcin_decoder;
2194 extern AVCodec eightbps_decoder;
2195 extern AVCodec smc_decoder;
2196 extern AVCodec flic_decoder;
2197 extern AVCodec vmdvideo_decoder;
2198 extern AVCodec vmdaudio_decoder;
2199 extern AVCodec truemotion1_decoder;
2200 extern AVCodec truemotion2_decoder;
2201 extern AVCodec mszh_decoder;
2202 extern AVCodec zlib_decoder;
2203 extern AVCodec ra_144_decoder;
2204 extern AVCodec ra_288_decoder;
2205 extern AVCodec roq_dpcm_decoder;
2206 extern AVCodec interplay_dpcm_decoder;
2207 extern AVCodec xan_dpcm_decoder;
2208 extern AVCodec sol_dpcm_decoder;
2209 extern AVCodec sonic_decoder;
2210 extern AVCodec qtrle_decoder;
2211 extern AVCodec flac_decoder;
2212 extern AVCodec tscc_decoder;
2213 extern AVCodec cscd_decoder;
2214 extern AVCodec ulti_decoder;
2215 extern AVCodec qdraw_decoder;
2216 extern AVCodec xl_decoder;
2217 extern AVCodec qpeg_decoder;
2218 extern AVCodec shorten_decoder;
2219 extern AVCodec loco_decoder;
2220 extern AVCodec wnv1_decoder;
2221 extern AVCodec aasc_decoder;
2222 extern AVCodec alac_decoder;
2223 extern AVCodec ws_snd1_decoder;
2224 extern AVCodec indeo2_decoder;
2225 extern AVCodec vorbis_decoder;
2226 extern AVCodec fraps_decoder;
2227 extern AVCodec libgsm_encoder;
2228 extern AVCodec libgsm_decoder;
2229 extern AVCodec bmp_decoder;
2230 extern AVCodec mmvideo_decoder;
2231
2232 /* pcm codecs */
2233 #define PCM_CODEC(id, name) \
2234 extern AVCodec name ## _decoder; \
2235 extern AVCodec name ## _encoder
2236
2237 PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2238 PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2239 PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2240 PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2241 PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2242 PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2243 PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2244 PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2245 PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2246 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2247 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2248 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2249 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2250 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2251 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2252 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2253 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2254
2255 /* adpcm codecs */
2256
2257 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2258 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2259 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2260 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2261 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2262 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2263 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2264 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2265 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2266 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2267 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2268 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2269 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2270 PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2271 PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2272
2273 #undef PCM_CODEC
2274
2275 /* dummy raw video codec */
2276 extern AVCodec rawvideo_encoder;
2277 extern AVCodec rawvideo_decoder;
2278
2279 /* the following codecs use external GPL libs */
2280 extern AVCodec ac3_decoder;
2281 extern AVCodec dts_decoder;
2282
2283 /* subtitles */
2284 extern AVCodec dvdsub_encoder;
2285 extern AVCodec dvdsub_decoder;
2286 extern AVCodec dvbsub_encoder;
2287 extern AVCodec dvbsub_decoder;
2288
2289 /* resample.c */
2290
2291 struct ReSampleContext;
2292 struct AVResampleContext;
2293
2294 typedef struct ReSampleContext ReSampleContext;
2295
2296 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2297 int output_rate, int input_rate);
2298 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2299 void audio_resample_close(ReSampleContext *s);
2300
2301 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2302 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2303 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2304 void av_resample_close(struct AVResampleContext *c);
2305
2306 /* YUV420 format is assumed ! */
2307
2308 struct ImgReSampleContext;
2309
2310 typedef struct ImgReSampleContext ImgReSampleContext;
2311
2312 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2313 int input_width, int input_height);
2314
2315 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2316 int iwidth, int iheight,
2317 int topBand, int bottomBand,
2318 int leftBand, int rightBand,
2319 int padtop, int padbottom,
2320 int padleft, int padright);
2321
2322
2323 void img_resample(ImgReSampleContext *s,
2324 AVPicture *output, const AVPicture *input);
2325
2326 void img_resample_close(ImgReSampleContext *s);
2327
2328 /**
2329 * Allocate memory for a picture. Call avpicture_free to free it.
2330 *
2331 * @param picture the picture to be filled in.
2332 * @param pix_fmt the format of the picture.
2333 * @param width the width of the picture.
2334 * @param height the height of the picture.
2335 * @return 0 if successful, -1 if not.
2336 */
2337 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2338
2339 /* Free a picture previously allocated by avpicture_alloc. */
2340 void avpicture_free(AVPicture *picture);
2341
2342 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2343 int pix_fmt, int width, int height);
2344 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2345 unsigned char *dest, int dest_size);
2346 int avpicture_get_size(int pix_fmt, int width, int height);
2347 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2348 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2349 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2350 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2351 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2352
2353 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2354 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2355 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2356 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2357 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2358 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2359
2360 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2361 int has_alpha);
2362 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2363 int has_alpha, int *loss_ptr);
2364
2365 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2366 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2367 int img_get_alpha_info(const AVPicture *src,
2368 int pix_fmt, int width, int height);
2369
2370 /* convert among pixel formats */
2371 int img_convert(AVPicture *dst, int dst_pix_fmt,
2372 const AVPicture *src, int pix_fmt,
2373 int width, int height);
2374
2375 /* deinterlace a picture */
2376 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2377 int pix_fmt, int width, int height);
2378
2379 /* external high level API */
2380
2381 extern AVCodec *first_avcodec;
2382
2383 /* returns LIBAVCODEC_VERSION_INT constant */
2384 unsigned avcodec_version(void);
2385 /* returns LIBAVCODEC_BUILD constant */
2386 unsigned avcodec_build(void);
2387 void avcodec_init(void);
2388
2389 void register_avcodec(AVCodec *format);
2390 AVCodec *avcodec_find_encoder(enum CodecID id);
2391 AVCodec *avcodec_find_encoder_by_name(const char *name);
2392 AVCodec *avcodec_find_decoder(enum CodecID id);
2393 AVCodec *avcodec_find_decoder_by_name(const char *name);
2394 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2395
2396 void avcodec_get_context_defaults(AVCodecContext *s);
2397 AVCodecContext *avcodec_alloc_context(void);
2398 void avcodec_get_frame_defaults(AVFrame *pic);
2399 AVFrame *avcodec_alloc_frame(void);
2400
2401 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2402 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2403 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2404 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2405 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2406 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2407
2408 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2409 void avcodec_thread_free(AVCodecContext *s);
2410 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2411 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2412 //FIXME func typedef
2413
2414 /**
2415 * opens / inits the AVCodecContext.
2416 * not thread save!
2417 */
2418 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2419
2420 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2421 int *frame_size_ptr,
2422 uint8_t *buf, int buf_size);
2423 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2424 int *got_picture_ptr,
2425 uint8_t *buf, int buf_size);
2426 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2427 int *got_sub_ptr,
2428 const uint8_t *buf, int buf_size);
2429 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2430 int *data_size_ptr,
2431 uint8_t *buf, int buf_size);
2432 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2433 const short *samples);
2434 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2435 const AVFrame *pict);
2436 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2437 const AVSubtitle *sub);
2438
2439 int avcodec_close(AVCodecContext *avctx);
2440
2441 void avcodec_register_all(void);
2442
2443 void avcodec_flush_buffers(AVCodecContext *avctx);
2444
2445 void avcodec_default_free_buffers(AVCodecContext *s);
2446
2447 /* misc usefull functions */
2448
2449 /**
2450 * returns a single letter to describe the picture type
2451 */
2452 char av_get_pict_type_char(int pict_type);
2453
2454
2455 /* frame parsing */
2456 typedef struct AVCodecParserContext {
2457 void *priv_data;
2458 struct AVCodecParser *parser;
2459 int64_t frame_offset; /* offset of the current frame */
2460 int64_t cur_offset; /* current offset
2461 (incremented by each av_parser_parse()) */
2462 int64_t last_frame_offset; /* offset of the last frame */
2463 /* video info */
2464 int pict_type; /* XXX: put it back in AVCodecContext */
2465 int repeat_pict; /* XXX: put it back in AVCodecContext */
2466 int64_t pts; /* pts of the current frame */
2467 int64_t dts; /* dts of the current frame */
2468
2469 /* private data */
2470 int64_t last_pts;
2471 int64_t last_dts;
2472 int fetch_timestamp;
2473
2474 #define AV_PARSER_PTS_NB 4
2475 int cur_frame_start_index;
2476 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2477 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2478 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2479
2480 int flags;
2481 #define PARSER_FLAG_COMPLETE_FRAMES 0x0001
2482 } AVCodecParserContext;
2483
2484 typedef struct AVCodecParser {
2485 int codec_ids[5]; /* several codec IDs are permitted */
2486 int priv_data_size;
2487 int (*parser_init)(AVCodecParserContext *s);
2488 int (*parser_parse)(AVCodecParserContext *s,
2489 AVCodecContext *avctx,
2490 uint8_t **poutbuf, int *poutbuf_size,
2491 const uint8_t *buf, int buf_size);
2492 void (*parser_close)(AVCodecParserContext *s);
2493 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2494 struct AVCodecParser *next;
2495 } AVCodecParser;
2496
2497 extern AVCodecParser *av_first_parser;
2498
2499 void av_register_codec_parser(AVCodecParser *parser);
2500 AVCodecParserContext *av_parser_init(int codec_id);
2501 int av_parser_parse(AVCodecParserContext *s,
2502 AVCodecContext *avctx,
2503 uint8_t **poutbuf, int *poutbuf_size,
2504 const uint8_t *buf, int buf_size,
2505 int64_t pts, int64_t dts);
2506 int av_parser_change(AVCodecParserContext *s,
2507 AVCodecContext *avctx,
2508 uint8_t **poutbuf, int *poutbuf_size,
2509 const uint8_t *buf, int buf_size, int keyframe);
2510 void av_parser_close(AVCodecParserContext *s);
2511
2512 extern AVCodecParser mpegvideo_parser;
2513 extern AVCodecParser mpeg4video_parser;
2514 extern AVCodecParser h261_parser;
2515 extern AVCodecParser h263_parser;
2516 extern AVCodecParser h264_parser;
2517 extern AVCodecParser mjpeg_parser;
2518 extern AVCodecParser pnm_parser;
2519 extern AVCodecParser mpegaudio_parser;
2520 extern AVCodecParser ac3_parser;
2521 extern AVCodecParser dvdsub_parser;
2522 extern AVCodecParser dvbsub_parser;
2523 extern AVCodecParser aac_parser;
2524
2525 /* memory */
2526 void *av_malloc(unsigned int size);
2527 void *av_mallocz(unsigned int size);
2528 void *av_realloc(void *ptr, unsigned int size);
2529 void av_free(void *ptr);
2530 char *av_strdup(const char *s);
2531 void av_freep(void *ptr);
2532 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2533 /* for static data only */
2534 /* call av_free_static to release all staticaly allocated tables */
2535 void av_free_static(void);
2536 void *av_mallocz_static(unsigned int size);
2537 void *av_realloc_static(void *ptr, unsigned int size);
2538
2539 /* add by bero : in adx.c */
2540 int is_adx(const unsigned char *buf,size_t bufsize);
2541
2542 void img_copy(AVPicture *dst, const AVPicture *src,
2543 int pix_fmt, int width, int height);
2544
2545 /* av_log API */
2546
2547 #include <stdarg.h>
2548
2549 #define AV_LOG_QUIET -1
2550 #define AV_LOG_ERROR 0
2551 #define AV_LOG_INFO 1
2552 #define AV_LOG_DEBUG 2
2553
2554 #ifdef __GNUC__
2555 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2556 #else
2557 extern void av_log(void*, int level, const char *fmt, ...);
2558 #endif
2559
2560 extern void av_vlog(void*, int level, const char *fmt, va_list);
2561 extern int av_log_get_level(void);
2562 extern void av_log_set_level(int);
2563 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2564
2565 /* endian macros */
2566 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2567 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2568 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2569 (((uint8_t*)(x))[1] << 16) | \
2570 (((uint8_t*)(x))[2] << 8) | \
2571 ((uint8_t*)(x))[3])
2572 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2573 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2574 (((uint8_t*)(x))[2] << 16) | \
2575 (((uint8_t*)(x))[1] << 8) | \
2576 ((uint8_t*)(x))[0])
2577 #endif
2578
2579 extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2580
2581 #ifdef __cplusplus
2582 }
2583 #endif
2584
2585 #endif /* AVCODEC_H */