a4df50712239e853fa300d35dddd6ff0a19addff
[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)+(8<<8)+0)
25 #define LIBAVCODEC_VERSION 51.8.0
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 CODEC_ID_ZMBV,
120 CODEC_ID_AVS,
121 CODEC_ID_SMACKVIDEO,
122
123 /* various pcm "codecs" */
124 CODEC_ID_PCM_S16LE= 0x10000,
125 CODEC_ID_PCM_S16BE,
126 CODEC_ID_PCM_U16LE,
127 CODEC_ID_PCM_U16BE,
128 CODEC_ID_PCM_S8,
129 CODEC_ID_PCM_U8,
130 CODEC_ID_PCM_MULAW,
131 CODEC_ID_PCM_ALAW,
132 CODEC_ID_PCM_S32LE,
133 CODEC_ID_PCM_S32BE,
134 CODEC_ID_PCM_U32LE,
135 CODEC_ID_PCM_U32BE,
136 CODEC_ID_PCM_S24LE,
137 CODEC_ID_PCM_S24BE,
138 CODEC_ID_PCM_U24LE,
139 CODEC_ID_PCM_U24BE,
140 CODEC_ID_PCM_S24DAUD,
141
142 /* various adpcm codecs */
143 CODEC_ID_ADPCM_IMA_QT= 0x11000,
144 CODEC_ID_ADPCM_IMA_WAV,
145 CODEC_ID_ADPCM_IMA_DK3,
146 CODEC_ID_ADPCM_IMA_DK4,
147 CODEC_ID_ADPCM_IMA_WS,
148 CODEC_ID_ADPCM_IMA_SMJPEG,
149 CODEC_ID_ADPCM_MS,
150 CODEC_ID_ADPCM_4XM,
151 CODEC_ID_ADPCM_XA,
152 CODEC_ID_ADPCM_ADX,
153 CODEC_ID_ADPCM_EA,
154 CODEC_ID_ADPCM_G726,
155 CODEC_ID_ADPCM_CT,
156 CODEC_ID_ADPCM_SWF,
157 CODEC_ID_ADPCM_YAMAHA,
158 CODEC_ID_ADPCM_SBPRO_4,
159 CODEC_ID_ADPCM_SBPRO_3,
160 CODEC_ID_ADPCM_SBPRO_2,
161
162 /* AMR */
163 CODEC_ID_AMR_NB= 0x12000,
164 CODEC_ID_AMR_WB,
165
166 /* RealAudio codecs*/
167 CODEC_ID_RA_144= 0x13000,
168 CODEC_ID_RA_288,
169
170 /* various DPCM codecs */
171 CODEC_ID_ROQ_DPCM= 0x14000,
172 CODEC_ID_INTERPLAY_DPCM,
173 CODEC_ID_XAN_DPCM,
174 CODEC_ID_SOL_DPCM,
175
176 CODEC_ID_MP2= 0x15000,
177 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
178 CODEC_ID_AAC,
179 CODEC_ID_MPEG4AAC,
180 CODEC_ID_AC3,
181 CODEC_ID_DTS,
182 CODEC_ID_VORBIS,
183 CODEC_ID_DVAUDIO,
184 CODEC_ID_WMAV1,
185 CODEC_ID_WMAV2,
186 CODEC_ID_MACE3,
187 CODEC_ID_MACE6,
188 CODEC_ID_VMDAUDIO,
189 CODEC_ID_SONIC,
190 CODEC_ID_SONIC_LS,
191 CODEC_ID_FLAC,
192 CODEC_ID_MP3ADU,
193 CODEC_ID_MP3ON4,
194 CODEC_ID_SHORTEN,
195 CODEC_ID_ALAC,
196 CODEC_ID_WESTWOOD_SND1,
197 CODEC_ID_GSM,
198 CODEC_ID_QDM2,
199 CODEC_ID_COOK,
200 CODEC_ID_TRUESPEECH,
201 CODEC_ID_TTA,
202 CODEC_ID_SMACKAUDIO,
203
204 CODEC_ID_OGGTHEORA= 0x16000,
205
206 /* subtitle codecs */
207 CODEC_ID_DVD_SUBTITLE= 0x17000,
208 CODEC_ID_DVB_SUBTITLE,
209
210 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
211 stream (only used by libavformat) */
212 };
213
214 /* CODEC_ID_MP3LAME is absolete */
215 #define CODEC_ID_MP3LAME CODEC_ID_MP3
216
217 enum CodecType {
218 CODEC_TYPE_UNKNOWN = -1,
219 CODEC_TYPE_VIDEO,
220 CODEC_TYPE_AUDIO,
221 CODEC_TYPE_DATA,
222 CODEC_TYPE_SUBTITLE,
223 };
224
225 /**
226 * Pixel format. Notes:
227 *
228 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
229 * color is put together as:
230 * (A << 24) | (R << 16) | (G << 8) | B
231 * This is stored as BGRA on little endian CPU architectures and ARGB on
232 * big endian CPUs.
233 *
234 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
235 * image data is stored in AVFrame.data[0]. The palette is transported in
236 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
237 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
238 * also endian-specific). Note also that the individual RGB palette
239 * components stored in AVFrame.data[1] should be in the range 0..255.
240 * This is important as many custom PAL8 video codecs that were designed
241 * to run on the IBM VGA graphics adapter use 6-bit palette components.
242 */
243 enum PixelFormat {
244 PIX_FMT_NONE= -1,
245 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
246 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
247 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
248 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
249 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
250 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
251 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
252 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
253 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
254 PIX_FMT_RGB565, ///< always stored in cpu endianness
255 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
256 PIX_FMT_GRAY8,
257 PIX_FMT_MONOWHITE, ///< 0 is white
258 PIX_FMT_MONOBLACK, ///< 0 is black
259 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
260 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
261 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
262 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
263 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
264 PIX_FMT_XVMC_MPEG2_IDCT,
265 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
266 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
267 PIX_FMT_NB,
268 };
269
270 /* currently unused, may be used if 24/32 bits samples ever supported */
271 /* all in native endian */
272 enum SampleFormat {
273 SAMPLT_FMT_NONE = -1,
274 SAMPLE_FMT_U8, ///< unsigned 8 bits
275 SAMPLE_FMT_S16, ///< signed 16 bits
276 SAMPLE_FMT_S24, ///< signed 24 bits
277 SAMPLE_FMT_S32, ///< signed 32 bits
278 SAMPLE_FMT_FLT, ///< float
279 };
280
281 /* in bytes */
282 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
283
284 /**
285 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
286 * this is mainly needed because some optimized bitstream readers read
287 * 32 or 64 bit at once and could read over the end<br>
288 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
289 * MPEG bitstreams could cause overread and segfault
290 */
291 #define FF_INPUT_BUFFER_PADDING_SIZE 8
292
293 /**
294 * minimum encoding buffer size.
295 * used to avoid some checks during header writing
296 */
297 #define FF_MIN_BUFFER_SIZE 16384
298
299 /* motion estimation type, EPZS by default */
300 enum Motion_Est_ID {
301 ME_ZERO = 1,
302 ME_FULL,
303 ME_LOG,
304 ME_PHODS,
305 ME_EPZS,
306 ME_X1,
307 ME_HEX,
308 ME_UMH,
309 ME_ITER,
310 };
311
312 enum AVDiscard{
313 //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
314 AVDISCARD_NONE =-16, ///< discard nothing
315 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
316 AVDISCARD_NONREF = 8, ///< discard all non reference
317 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
318 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
319 AVDISCARD_ALL = 48, ///< discard all
320 };
321
322 typedef struct RcOverride{
323 int start_frame;
324 int end_frame;
325 int qscale; // if this is 0 then quality_factor will be used instead
326 float quality_factor;
327 } RcOverride;
328
329 /* only for ME compatiblity with old apps */
330 extern int motion_estimation_method;
331
332 #define FF_MAX_B_FRAMES 16
333
334 /* encoding support
335 these flags can be passed in AVCodecContext.flags before initing
336 Note: not everything is supported yet.
337 */
338
339 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
340 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
341 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
342 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
343 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
344 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
345 /* parent program gurantees that the input for b-frame containing streams is not written to
346 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
347 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
348 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
349 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
350 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
351 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
352 #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
353 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
354 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
355 of only at frame boundaries */
356 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
357 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
358 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
359 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
360 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
361 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
362 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
363 /* Fx : Flag for h263+ extra options */
364 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
365 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
366 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
367 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
368 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
369 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
370 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
371 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
372 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
373 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
374 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
375 #define CODEC_FLAG_CLOSED_GOP 0x80000000
376 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
377 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
378 #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
379 #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
380 #define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow b-frames to be used as references
381 #define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for b-frames
382 #define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 multiple references per partition
383 #define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform
384 #define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip
385 #define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters
386 #define CODEC_FLAG2_BRDO 0x00000400 ///< b-frame rate-distortion optimization
387
388 /* Unsupported options :
389 * Syntax Arithmetic coding (SAC)
390 * Reference Picture Selection
391 * Independant Segment Decoding */
392 /* /Fx */
393 /* codec capabilities */
394
395 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
396 /**
397 * Codec uses get_buffer() for allocating buffers.
398 * direct rendering method 1
399 */
400 #define CODEC_CAP_DR1 0x0002
401 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
402 used */
403 #define CODEC_CAP_PARSE_ONLY 0x0004
404 #define CODEC_CAP_TRUNCATED 0x0008
405 /* codec can export data for HW decoding (XvMC) */
406 #define CODEC_CAP_HWACCEL 0x0010
407 /**
408 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
409 * if this is not set, the codec is guranteed to never be feeded with NULL data
410 */
411 #define CODEC_CAP_DELAY 0x0020
412
413 //the following defines may change, don't expect compatibility if you use them
414 #define MB_TYPE_INTRA4x4 0x0001
415 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
416 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
417 #define MB_TYPE_16x16 0x0008
418 #define MB_TYPE_16x8 0x0010
419 #define MB_TYPE_8x16 0x0020
420 #define MB_TYPE_8x8 0x0040
421 #define MB_TYPE_INTERLACED 0x0080
422 #define MB_TYPE_DIRECT2 0x0100 //FIXME
423 #define MB_TYPE_ACPRED 0x0200
424 #define MB_TYPE_GMC 0x0400
425 #define MB_TYPE_SKIP 0x0800
426 #define MB_TYPE_P0L0 0x1000
427 #define MB_TYPE_P1L0 0x2000
428 #define MB_TYPE_P0L1 0x4000
429 #define MB_TYPE_P1L1 0x8000
430 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
431 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
432 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
433 #define MB_TYPE_QUANT 0x00010000
434 #define MB_TYPE_CBP 0x00020000
435 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
436
437 /**
438 * Pan Scan area.
439 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
440 */
441 typedef struct AVPanScan{
442 /**
443 * id.
444 * - encoding: set by user.
445 * - decoding: set by lavc
446 */
447 int id;
448
449 /**
450 * width and height in 1/16 pel
451 * - encoding: set by user.
452 * - decoding: set by lavc
453 */
454 int width;
455 int height;
456
457 /**
458 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
459 * - encoding: set by user.
460 * - decoding: set by lavc
461 */
462 int16_t position[3][2];
463 }AVPanScan;
464
465 #define FF_COMMON_FRAME \
466 /**\
467 * pointer to the picture planes.\
468 * this might be different from the first allocated byte\
469 * - encoding: \
470 * - decoding: \
471 */\
472 uint8_t *data[4];\
473 int linesize[4];\
474 /**\
475 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
476 * this isn't used by lavc unless the default get/release_buffer() is used\
477 * - encoding: \
478 * - decoding: \
479 */\
480 uint8_t *base[4];\
481 /**\
482 * 1 -> keyframe, 0-> not\
483 * - encoding: set by lavc\
484 * - decoding: set by lavc\
485 */\
486 int key_frame;\
487 \
488 /**\
489 * picture type of the frame, see ?_TYPE below.\
490 * - encoding: set by lavc for coded_picture (and set by user for input)\
491 * - decoding: set by lavc\
492 */\
493 int pict_type;\
494 \
495 /**\
496 * presentation timestamp in time_base units (time when frame should be shown to user)\
497 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
498 * - encoding: MUST be set by user\
499 * - decoding: set by lavc\
500 */\
501 int64_t pts;\
502 \
503 /**\
504 * picture number in bitstream order.\
505 * - encoding: set by\
506 * - decoding: set by lavc\
507 */\
508 int coded_picture_number;\
509 /**\
510 * picture number in display order.\
511 * - encoding: set by\
512 * - decoding: set by lavc\
513 */\
514 int display_picture_number;\
515 \
516 /**\
517 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
518 * - encoding: set by lavc for coded_picture (and set by user for input)\
519 * - decoding: set by lavc\
520 */\
521 int quality; \
522 \
523 /**\
524 * buffer age (1->was last buffer and dint change, 2->..., ...).\
525 * set to INT_MAX if the buffer has not been used yet \
526 * - encoding: unused\
527 * - decoding: MUST be set by get_buffer()\
528 */\
529 int age;\
530 \
531 /**\
532 * is this picture used as reference\
533 * - encoding: unused\
534 * - decoding: set by lavc (before get_buffer() call))\
535 */\
536 int reference;\
537 \
538 /**\
539 * QP table\
540 * - encoding: unused\
541 * - decoding: set by lavc\
542 */\
543 int8_t *qscale_table;\
544 /**\
545 * QP store stride\
546 * - encoding: unused\
547 * - decoding: set by lavc\
548 */\
549 int qstride;\
550 \
551 /**\
552 * mbskip_table[mb]>=1 if MB didnt change\
553 * stride= mb_width = (width+15)>>4\
554 * - encoding: unused\
555 * - decoding: set by lavc\
556 */\
557 uint8_t *mbskip_table;\
558 \
559 /**\
560 * Motion vector table.\
561 * @code\
562 * example:\
563 * int mv_sample_log2= 4 - motion_subsample_log2;\
564 * int mb_width= (width+15)>>4;\
565 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
566 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
567 * @endcode\
568 * - encoding: set by user\
569 * - decoding: set by lavc\
570 */\
571 int16_t (*motion_val[2])[2];\
572 \
573 /**\
574 * Macroblock type table\
575 * mb_type_base + mb_width + 2\
576 * - encoding: set by user\
577 * - decoding: set by lavc\
578 */\
579 uint32_t *mb_type;\
580 \
581 /**\
582 * log2 of the size of the block which a single vector in motion_val represents: \
583 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
584 * - encoding: unused\
585 * - decoding: set by lavc\
586 */\
587 uint8_t motion_subsample_log2;\
588 \
589 /**\
590 * for some private data of the user\
591 * - encoding: unused\
592 * - decoding: set by user\
593 */\
594 void *opaque;\
595 \
596 /**\
597 * error\
598 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
599 * - decoding: unused\
600 */\
601 uint64_t error[4];\
602 \
603 /**\
604 * type of the buffer (to keep track of who has to dealloc data[*])\
605 * - encoding: set by the one who allocs it\
606 * - decoding: set by the one who allocs it\
607 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
608 */\
609 int type;\
610 \
611 /**\
612 * when decoding, this signal how much the picture must be delayed.\
613 * extra_delay = repeat_pict / (2*fps)\
614 * - encoding: unused\
615 * - decoding: set by lavc\
616 */\
617 int repeat_pict;\
618 \
619 /**\
620 * \
621 */\
622 int qscale_type;\
623 \
624 /**\
625 * The content of the picture is interlaced.\
626 * - encoding: set by user\
627 * - decoding: set by lavc (default 0)\
628 */\
629 int interlaced_frame;\
630 \
631 /**\
632 * if the content is interlaced, is top field displayed first.\
633 * - encoding: set by user\
634 * - decoding: set by lavc\
635 */\
636 int top_field_first;\
637 \
638 /**\
639 * Pan scan.\
640 * - encoding: set by user\
641 * - decoding: set by lavc\
642 */\
643 AVPanScan *pan_scan;\
644 \
645 /**\
646 * tell user application that palette has changed from previous frame.\
647 * - encoding: ??? (no palette-enabled encoder yet)\
648 * - decoding: set by lavc (default 0)\
649 */\
650 int palette_has_changed;\
651 \
652 /**\
653 * Codec suggestion on buffer type if != 0\
654 * - encoding: unused\
655 * - decoding: set by lavc (before get_buffer() call))\
656 */\
657 int buffer_hints;\
658 \
659 /**\
660 * DCT coeffitients\
661 * - encoding: unused\
662 * - decoding: set by lavc\
663 */\
664 short *dct_coeff;\
665 \
666 /**\
667 * Motion referece frame index\
668 * - encoding: set by user\
669 * - decoding: set by lavc\
670 */\
671 int8_t *ref_index[2];
672
673 #define FF_QSCALE_TYPE_MPEG1 0
674 #define FF_QSCALE_TYPE_MPEG2 1
675 #define FF_QSCALE_TYPE_H264 2
676
677 #define FF_BUFFER_TYPE_INTERNAL 1
678 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
679 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
680 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
681
682
683 #define FF_I_TYPE 1 // Intra
684 #define FF_P_TYPE 2 // Predicted
685 #define FF_B_TYPE 3 // Bi-dir predicted
686 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
687 #define FF_SI_TYPE 5
688 #define FF_SP_TYPE 6
689
690 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
691 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
692 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
693 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
694
695 /**
696 * Audio Video Frame.
697 */
698 typedef struct AVFrame {
699 FF_COMMON_FRAME
700 } AVFrame;
701
702 #define DEFAULT_FRAME_RATE_BASE 1001000
703
704 /**
705 * Used by av_log
706 */
707 typedef struct AVCLASS AVClass;
708 struct AVCLASS {
709 const char* class_name;
710 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
711 or AVFormatContext, which begin with an AVClass.
712 Needed because av_log is in libavcodec and has no visibility
713 of AVIn/OutputFormat */
714 struct AVOption *option;
715 };
716
717 /**
718 * main external api structure.
719 */
720 typedef struct AVCodecContext {
721 /**
722 * Info on struct for av_log
723 * - set by avcodec_alloc_context
724 */
725 AVClass *av_class;
726 /**
727 * the average bitrate.
728 * - encoding: set by user. unused for constant quantizer encoding
729 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
730 */
731 int bit_rate;
732
733 /**
734 * number of bits the bitstream is allowed to diverge from the reference.
735 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
736 * - encoding: set by user. unused for constant quantizer encoding
737 * - decoding: unused
738 */
739 int bit_rate_tolerance;
740
741 /**
742 * CODEC_FLAG_*.
743 * - encoding: set by user.
744 * - decoding: set by user.
745 */
746 int flags;
747
748 /**
749 * some codecs needs additionnal format info. It is stored here
750 * - encoding: set by user.
751 * - decoding: set by lavc. (FIXME is this ok?)
752 */
753 int sub_id;
754
755 /**
756 * motion estimation algorithm used for video coding.
757 * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
758 * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
759 * - encoding: MUST be set by user.
760 * - decoding: unused
761 */
762 int me_method;
763
764 /**
765 * some codecs need / can use extra-data like huffman tables.
766 * mjpeg: huffman tables
767 * rv10: additional flags
768 * mpeg4: global headers (they can be in the bitstream or here)
769 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
770 * then extradata_size to avoid prolems if its read with the bitstream reader
771 * the bytewise contents of extradata must not depend on the architecture or cpu endianness
772 * - encoding: set/allocated/freed by lavc.
773 * - decoding: set/allocated/freed by user.
774 */
775 void *extradata;
776 int extradata_size;
777
778 /**
779 * this is the fundamental unit of time (in seconds) in terms
780 * of which frame timestamps are represented. for fixed-fps content,
781 * timebase should be 1/framerate and timestamp increments should be
782 * identically 1.
783 * - encoding: MUST be set by user
784 * - decoding: set by lavc.
785 */
786 AVRational time_base;
787
788 /* video only */
789 /**
790 * picture width / height.
791 * - encoding: MUST be set by user.
792 * - decoding: set by lavc.
793 * Note, for compatibility its possible to set this instead of
794 * coded_width/height before decoding
795 */
796 int width, height;
797
798 #define FF_ASPECT_EXTENDED 15
799
800 /**
801 * the number of pictures in a group of pitures, or 0 for intra_only.
802 * - encoding: set by user.
803 * - decoding: unused
804 */
805 int gop_size;
806
807 /**
808 * pixel format, see PIX_FMT_xxx.
809 * - encoding: set by user.
810 * - decoding: set by lavc.
811 */
812 enum PixelFormat pix_fmt;
813
814 /**
815 * Frame rate emulation. If not zero lower layer (i.e. format handler)
816 * has to read frames at native frame rate.
817 * - encoding: set by user.
818 * - decoding: unused.
819 */
820 int rate_emu;
821
822 /**
823 * if non NULL, 'draw_horiz_band' is called by the libavcodec
824 * decoder to draw an horizontal band. It improve cache usage. Not
825 * all codecs can do that. You must check the codec capabilities
826 * before
827 * - encoding: unused
828 * - decoding: set by user.
829 * @param height the height of the slice
830 * @param y the y position of the slice
831 * @param type 1->top field, 2->bottom field, 3->frame
832 * @param offset offset into the AVFrame.data from which the slice should be read
833 */
834 void (*draw_horiz_band)(struct AVCodecContext *s,
835 const AVFrame *src, int offset[4],
836 int y, int type, int height);
837
838 /* audio only */
839 int sample_rate; ///< samples per sec
840 int channels;
841
842 /**
843 * audio sample format.
844 * - encoding: set by user.
845 * - decoding: set by lavc.
846 */
847 enum SampleFormat sample_fmt; ///< sample format, currenly unused
848
849 /* the following data should not be initialized */
850 /**
851 * samples per packet. initialized when calling 'init'
852 */
853 int frame_size;
854 int frame_number; ///< audio or video frame number
855 int real_pict_num; ///< returns the real picture number of previous encoded frame
856
857 /**
858 * number of frames the decoded output will be delayed relative to
859 * the encoded input.
860 * - encoding: set by lavc.
861 * - decoding: unused
862 */
863 int delay;
864
865 /* - encoding parameters */
866 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
867 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
868
869 /**
870 * minimum quantizer.
871 * - encoding: set by user.
872 * - decoding: unused
873 */
874 int qmin;
875
876 /**
877 * maximum quantizer.
878 * - encoding: set by user.
879 * - decoding: unused
880 */
881 int qmax;
882
883 /**
884 * maximum quantizer difference etween frames.
885 * - encoding: set by user.
886 * - decoding: unused
887 */
888 int max_qdiff;
889
890 /**
891 * maximum number of b frames between non b frames.
892 * note: the output will be delayed by max_b_frames+1 relative to the input
893 * - encoding: set by user.
894 * - decoding: unused
895 */
896 int max_b_frames;
897
898 /**
899 * qscale factor between ip and b frames.
900 * - encoding: set by user.
901 * - decoding: unused
902 */
903 float b_quant_factor;
904
905 /** obsolete FIXME remove */
906 int rc_strategy;
907 #define FF_RC_STRATEGY_XVID 1
908
909 int b_frame_strategy;
910
911 /**
912 * hurry up amount.
913 * deprecated in favor of skip_idct and skip_frame
914 * - encoding: unused
915 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
916 */
917 int hurry_up;
918
919 struct AVCodec *codec;
920
921 void *priv_data;
922
923 /* unused, FIXME remove*/
924 int rtp_mode;
925
926 int rtp_payload_size; /* The size of the RTP payload: the coder will */
927 /* do it's best to deliver a chunk with size */
928 /* below rtp_payload_size, the chunk will start */
929 /* with a start code on some codecs like H.263 */
930 /* This doesn't take account of any particular */
931 /* headers inside the transmited RTP payload */
932
933
934 /* The RTP callback: This function is called */
935 /* every time the encoder has a packet to send */
936 /* Depends on the encoder if the data starts */
937 /* with a Start Code (it should) H.263 does. */
938 /* mb_nb contains the number of macroblocks */
939 /* encoded in the RTP payload */
940 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
941
942 /* statistics, used for 2-pass encoding */
943 int mv_bits;
944 int header_bits;
945 int i_tex_bits;
946 int p_tex_bits;
947 int i_count;
948 int p_count;
949 int skip_count;
950 int misc_bits;
951
952 /**
953 * number of bits used for the previously encoded frame.
954 * - encoding: set by lavc
955 * - decoding: unused
956 */
957 int frame_bits;
958
959 /**
960 * private data of the user, can be used to carry app specific stuff.
961 * - encoding: set by user
962 * - decoding: set by user
963 */
964 void *opaque;
965
966 char codec_name[32];
967 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
968 enum CodecID codec_id; /* see CODEC_ID_xxx */
969
970 /**
971 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
972 * this is used to workaround some encoder bugs
973 * - encoding: set by user, if not then the default based on codec_id will be used
974 * - decoding: set by user, will be converted to upper case by lavc during init
975 */
976 unsigned int codec_tag;
977
978 /**
979 * workaround bugs in encoders which sometimes cannot be detected automatically.
980 * - encoding: set by user
981 * - decoding: set by user
982 */
983 int workaround_bugs;
984 #define FF_BUG_AUTODETECT 1 ///< autodetection
985 #define FF_BUG_OLD_MSMPEG4 2
986 #define FF_BUG_XVID_ILACE 4
987 #define FF_BUG_UMP4 8
988 #define FF_BUG_NO_PADDING 16
989 #define FF_BUG_AMV 32
990 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
991 #define FF_BUG_QPEL_CHROMA 64
992 #define FF_BUG_STD_QPEL 128
993 #define FF_BUG_QPEL_CHROMA2 256
994 #define FF_BUG_DIRECT_BLOCKSIZE 512
995 #define FF_BUG_EDGE 1024
996 #define FF_BUG_HPEL_CHROMA 2048
997 #define FF_BUG_DC_CLIP 4096
998 #define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
999 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
1000
1001 /**
1002 * luma single coeff elimination threshold.
1003 * - encoding: set by user
1004 * - decoding: unused
1005 */
1006 int luma_elim_threshold;
1007
1008 /**
1009 * chroma single coeff elimination threshold.
1010 * - encoding: set by user
1011 * - decoding: unused
1012 */
1013 int chroma_elim_threshold;
1014
1015 /**
1016 * strictly follow the std (MPEG4, ...).
1017 * - encoding: set by user
1018 * - decoding: unused
1019 */
1020 int strict_std_compliance;
1021 #define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
1022 #define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
1023 #define FF_COMPLIANCE_NORMAL 0
1024 #define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
1025 #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
1026
1027 /**
1028 * qscale offset between ip and b frames.
1029 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1030 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1031 * - encoding: set by user.
1032 * - decoding: unused
1033 */
1034 float b_quant_offset;
1035
1036 /**
1037 * error resilience higher values will detect more errors but may missdetect
1038 * some more or less valid parts as errors.
1039 * - encoding: unused
1040 * - decoding: set by user
1041 */
1042 int error_resilience;
1043 #define FF_ER_CAREFUL 1
1044 #define FF_ER_COMPLIANT 2
1045 #define FF_ER_AGGRESSIVE 3
1046 #define FF_ER_VERY_AGGRESSIVE 4
1047
1048 /**
1049 * called at the beginning of each frame to get a buffer for it.
1050 * if pic.reference is set then the frame will be read later by lavc
1051 * avcodec_align_dimensions() should be used to find the required width and
1052 * height, as they normally need to be rounded up to the next multiple of 16
1053 * - encoding: unused
1054 * - decoding: set by lavc, user can override
1055 */
1056 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1057
1058 /**
1059 * called to release buffers which where allocated with get_buffer.
1060 * a released buffer can be reused in get_buffer()
1061 * pic.data[*] must be set to NULL
1062 * - encoding: unused
1063 * - decoding: set by lavc, user can override
1064 */
1065 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1066
1067 /**
1068 * if 1 the stream has a 1 frame delay during decoding.
1069 * - encoding: set by lavc
1070 * - decoding: set by lavc
1071 */
1072 int has_b_frames;
1073
1074 /**
1075 * number of bytes per packet if constant and known or 0
1076 * used by some WAV based audio codecs
1077 */
1078 int block_align;
1079
1080 int parse_only; /* - decoding only: if true, only parsing is done
1081 (function avcodec_parse_frame()). The frame
1082 data is returned. Only MPEG codecs support this now. */
1083
1084 /**
1085 * 0-> h263 quant 1-> mpeg quant.
1086 * - encoding: set by user.
1087 * - decoding: unused
1088 */
1089 int mpeg_quant;
1090
1091 /**
1092 * pass1 encoding statistics output buffer.
1093 * - encoding: set by lavc
1094 * - decoding: unused
1095 */
1096 char *stats_out;
1097
1098 /**
1099 * pass2 encoding statistics input buffer.
1100 * concatenated stuff from stats_out of pass1 should be placed here
1101 * - encoding: allocated/set/freed by user
1102 * - decoding: unused
1103 */
1104 char *stats_in;
1105
1106 /**
1107 * ratecontrol qmin qmax limiting method.
1108 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1109 * - encoding: set by user.
1110 * - decoding: unused
1111 */
1112 float rc_qsquish;
1113
1114 float rc_qmod_amp;
1115 int rc_qmod_freq;
1116
1117 /**
1118 * ratecontrol override, see RcOverride.
1119 * - encoding: allocated/set/freed by user.
1120 * - decoding: unused
1121 */
1122 RcOverride *rc_override;
1123 int rc_override_count;
1124
1125 /**
1126 * rate control equation.
1127 * - encoding: set by user
1128 * - decoding: unused
1129 */
1130 char *rc_eq;
1131
1132 /**
1133 * maximum bitrate.
1134 * - encoding: set by user.
1135 * - decoding: unused
1136 */
1137 int rc_max_rate;
1138
1139 /**
1140 * minimum bitrate.
1141 * - encoding: set by user.
1142 * - decoding: unused
1143 */
1144 int rc_min_rate;
1145
1146 /**
1147 * decoder bitstream buffer size.
1148 * - encoding: set by user.
1149 * - decoding: unused
1150 */
1151 int rc_buffer_size;
1152 float rc_buffer_aggressivity;
1153
1154 /**
1155 * qscale factor between p and i frames.
1156 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1157 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1158 * - encoding: set by user.
1159 * - decoding: unused
1160 */
1161 float i_quant_factor;
1162
1163 /**
1164 * qscale offset between p and i frames.
1165 * - encoding: set by user.
1166 * - decoding: unused
1167 */
1168 float i_quant_offset;
1169
1170 /**
1171 * initial complexity for pass1 ratecontrol.
1172 * - encoding: set by user.
1173 * - decoding: unused
1174 */
1175 float rc_initial_cplx;
1176
1177 /**
1178 * dct algorithm, see FF_DCT_* below.
1179 * - encoding: set by user
1180 * - decoding: unused
1181 */
1182 int dct_algo;
1183 #define FF_DCT_AUTO 0
1184 #define FF_DCT_FASTINT 1
1185 #define FF_DCT_INT 2
1186 #define FF_DCT_MMX 3
1187 #define FF_DCT_MLIB 4
1188 #define FF_DCT_ALTIVEC 5
1189 #define FF_DCT_FAAN 6
1190
1191 /**
1192 * luminance masking (0-> disabled).
1193 * - encoding: set by user
1194 * - decoding: unused
1195 */
1196 float lumi_masking;
1197
1198 /**
1199 * temporary complexity masking (0-> disabled).
1200 * - encoding: set by user
1201 * - decoding: unused
1202 */
1203 float temporal_cplx_masking;
1204
1205 /**
1206 * spatial complexity masking (0-> disabled).
1207 * - encoding: set by user
1208 * - decoding: unused
1209 */
1210 float spatial_cplx_masking;
1211
1212 /**
1213 * p block masking (0-> disabled).
1214 * - encoding: set by user
1215 * - decoding: unused
1216 */
1217 float p_masking;
1218
1219 /**
1220 * darkness masking (0-> disabled).
1221 * - encoding: set by user
1222 * - decoding: unused
1223 */
1224 float dark_masking;
1225
1226
1227 /* for binary compatibility */
1228 int unused;
1229
1230 /**
1231 * idct algorithm, see FF_IDCT_* below.
1232 * - encoding: set by user
1233 * - decoding: set by user
1234 */
1235 int idct_algo;
1236 #define FF_IDCT_AUTO 0
1237 #define FF_IDCT_INT 1
1238 #define FF_IDCT_SIMPLE 2
1239 #define FF_IDCT_SIMPLEMMX 3
1240 #define FF_IDCT_LIBMPEG2MMX 4
1241 #define FF_IDCT_PS2 5
1242 #define FF_IDCT_MLIB 6
1243 #define FF_IDCT_ARM 7
1244 #define FF_IDCT_ALTIVEC 8
1245 #define FF_IDCT_SH4 9
1246 #define FF_IDCT_SIMPLEARM 10
1247 #define FF_IDCT_H264 11
1248 #define FF_IDCT_VP3 12
1249 #define FF_IDCT_IPP 13
1250 #define FF_IDCT_XVIDMMX 14
1251
1252 /**
1253 * slice count.
1254 * - encoding: set by lavc
1255 * - decoding: set by user (or 0)
1256 */
1257 int slice_count;
1258 /**
1259 * slice offsets in the frame in bytes.
1260 * - encoding: set/allocated by lavc
1261 * - decoding: set/allocated by user (or NULL)
1262 */
1263 int *slice_offset;
1264
1265 /**
1266 * error concealment flags.
1267 * - encoding: unused
1268 * - decoding: set by user
1269 */
1270 int error_concealment;
1271 #define FF_EC_GUESS_MVS 1
1272 #define FF_EC_DEBLOCK 2
1273
1274 /**
1275 * dsp_mask could be add used to disable unwanted CPU features
1276 * CPU features (i.e. MMX, SSE. ...)
1277 *
1278 * with FORCE flag you may instead enable given CPU features
1279 * (Dangerous: usable in case of misdetection, improper usage however will
1280 * result into program crash)
1281 */
1282 unsigned dsp_mask;
1283 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1284 /* lower 16 bits - CPU features */
1285 #ifdef HAVE_MMX
1286 #define FF_MM_MMX 0x0001 /* standard MMX */
1287 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1288 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1289 #define FF_MM_SSE 0x0008 /* SSE functions */
1290 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1291 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1292 #endif /* HAVE_MMX */
1293 #ifdef HAVE_IWMMXT
1294 #define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
1295 #endif /* HAVE_IWMMXT */
1296
1297 /**
1298 * bits per sample/pixel from the demuxer (needed for huffyuv).
1299 * - encoding: set by lavc
1300 * - decoding: set by user
1301 */
1302 int bits_per_sample;
1303
1304 /**
1305 * prediction method (needed for huffyuv).
1306 * - encoding: set by user
1307 * - decoding: unused
1308 */
1309 int prediction_method;
1310 #define FF_PRED_LEFT 0
1311 #define FF_PRED_PLANE 1
1312 #define FF_PRED_MEDIAN 2
1313
1314 /**
1315 * sample aspect ratio (0 if unknown).
1316 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1317 * - encoding: set by user.
1318 * - decoding: set by lavc.
1319 */
1320 AVRational sample_aspect_ratio;
1321
1322 /**
1323 * the picture in the bitstream.
1324 * - encoding: set by lavc
1325 * - decoding: set by lavc
1326 */
1327 AVFrame *coded_frame;
1328
1329 /**
1330 * debug.
1331 * - encoding: set by user.
1332 * - decoding: set by user.
1333 */
1334 int debug;
1335 #define FF_DEBUG_PICT_INFO 1
1336 #define FF_DEBUG_RC 2
1337 #define FF_DEBUG_BITSTREAM 4
1338 #define FF_DEBUG_MB_TYPE 8
1339 #define FF_DEBUG_QP 16
1340 #define FF_DEBUG_MV 32
1341 #define FF_DEBUG_DCT_COEFF 0x00000040
1342 #define FF_DEBUG_SKIP 0x00000080
1343 #define FF_DEBUG_STARTCODE 0x00000100
1344 #define FF_DEBUG_PTS 0x00000200
1345 #define FF_DEBUG_ER 0x00000400
1346 #define FF_DEBUG_MMCO 0x00000800
1347 #define FF_DEBUG_BUGS 0x00001000
1348 #define FF_DEBUG_VIS_QP 0x00002000
1349 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1350
1351 /**
1352 * debug.
1353 * - encoding: set by user.
1354 * - decoding: set by user.
1355 */
1356 int debug_mv;
1357 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1358 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1359 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1360
1361 /**
1362 * error.
1363 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1364 * - decoding: unused
1365 */
1366 uint64_t error[4];
1367
1368 /**
1369 * minimum MB quantizer.
1370 * - encoding: unused
1371 * - decoding: unused
1372 */
1373 int mb_qmin;
1374
1375 /**
1376 * maximum MB quantizer.
1377 * - encoding: unused
1378 * - decoding: unused
1379 */
1380 int mb_qmax;
1381
1382 /**
1383 * motion estimation compare function.
1384 * - encoding: set by user.
1385 * - decoding: unused
1386 */
1387 int me_cmp;
1388 /**
1389 * subpixel motion estimation compare function.
1390 * - encoding: set by user.
1391 * - decoding: unused
1392 */
1393 int me_sub_cmp;
1394 /**
1395 * macroblock compare function (not supported yet).
1396 * - encoding: set by user.
1397 * - decoding: unused
1398 */
1399 int mb_cmp;
1400 /**
1401 * interlaced dct compare function
1402 * - encoding: set by user.
1403 * - decoding: unused
1404 */
1405 int ildct_cmp;
1406 #define FF_CMP_SAD 0
1407 #define FF_CMP_SSE 1
1408 #define FF_CMP_SATD 2
1409 #define FF_CMP_DCT 3
1410 #define FF_CMP_PSNR 4
1411 #define FF_CMP_BIT 5
1412 #define FF_CMP_RD 6
1413 #define FF_CMP_ZERO 7
1414 #define FF_CMP_VSAD 8
1415 #define FF_CMP_VSSE 9
1416 #define FF_CMP_NSSE 10
1417 #define FF_CMP_W53 11
1418 #define FF_CMP_W97 12
1419 #define FF_CMP_DCTMAX 13
1420 #define FF_CMP_DCT264 14
1421 #define FF_CMP_CHROMA 256
1422
1423 /**
1424 * ME diamond size & shape.
1425 * - encoding: set by user.
1426 * - decoding: unused
1427 */
1428 int dia_size;
1429
1430 /**
1431 * amount of previous MV predictors (2a+1 x 2a+1 square).
1432 * - encoding: set by user.
1433 * - decoding: unused
1434 */
1435 int last_predictor_count;
1436
1437 /**
1438 * pre pass for motion estimation.
1439 * - encoding: set by user.
1440 * - decoding: unused
1441 */
1442 int pre_me;
1443
1444 /**
1445 * motion estimation pre pass compare function.
1446 * - encoding: set by user.
1447 * - decoding: unused
1448 */
1449 int me_pre_cmp;
1450
1451 /**
1452 * ME pre pass diamond size & shape.
1453 * - encoding: set by user.
1454 * - decoding: unused
1455 */
1456 int pre_dia_size;
1457
1458 /**
1459 * subpel ME quality.
1460 * - encoding: set by user.
1461 * - decoding: unused
1462 */
1463 int me_subpel_quality;
1464
1465 /**
1466 * callback to negotiate the pixelFormat.
1467 * @param fmt is the list of formats which are supported by the codec,
1468 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1469 * the first is allways the native one
1470 * @return the choosen format
1471 * - encoding: unused
1472 * - decoding: set by user, if not set then the native format will always be choosen
1473 */
1474 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1475
1476 /**
1477 * DTG active format information (additionnal aspect ratio
1478 * information only used in DVB MPEG2 transport streams). 0 if
1479 * not set.
1480 *
1481 * - encoding: unused.
1482 * - decoding: set by decoder
1483 */
1484 int dtg_active_format;
1485 #define FF_DTG_AFD_SAME 8
1486 #define FF_DTG_AFD_4_3 9
1487 #define FF_DTG_AFD_16_9 10
1488 #define FF_DTG_AFD_14_9 11
1489 #define FF_DTG_AFD_4_3_SP_14_9 13
1490 #define FF_DTG_AFD_16_9_SP_14_9 14
1491 #define FF_DTG_AFD_SP_4_3 15
1492
1493 /**
1494 * Maximum motion estimation search range in subpel units.
1495 * if 0 then no limit
1496 *
1497 * - encoding: set by user.
1498 * - decoding: unused.
1499 */
1500 int me_range;
1501
1502 /**
1503 * intra quantizer bias.
1504 * - encoding: set by user.
1505 * - decoding: unused
1506 */
1507 int intra_quant_bias;
1508 #define FF_DEFAULT_QUANT_BIAS 999999
1509
1510 /**
1511 * inter quantizer bias.
1512 * - encoding: set by user.
1513 * - decoding: unused
1514 */
1515 int inter_quant_bias;
1516
1517 /**
1518 * color table ID.
1519 * - encoding: unused.
1520 * - decoding: which clrtable should be used for 8bit RGB images
1521 * table have to be stored somewhere FIXME
1522 */
1523 int color_table_id;
1524
1525 /**
1526 * internal_buffer count.
1527 * Don't touch, used by lavc default_get_buffer()
1528 */
1529 int internal_buffer_count;
1530
1531 /**
1532 * internal_buffers.
1533 * Don't touch, used by lavc default_get_buffer()
1534 */
1535 void *internal_buffer;
1536
1537 #define FF_LAMBDA_SHIFT 7
1538 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1539 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1540 #define FF_LAMBDA_MAX (256*128-1)
1541
1542 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1543 /**
1544 * global quality for codecs which cannot change it per frame.
1545 * this should be proportional to MPEG1/2/4 qscale.
1546 * - encoding: set by user.
1547 * - decoding: unused
1548 */
1549 int global_quality;
1550
1551 #define FF_CODER_TYPE_VLC 0
1552 #define FF_CODER_TYPE_AC 1
1553 /**
1554 * coder type
1555 * - encoding: set by user.
1556 * - decoding: unused
1557 */
1558 int coder_type;
1559
1560 /**
1561 * context model
1562 * - encoding: set by user.
1563 * - decoding: unused
1564 */
1565 int context_model;
1566 #if 0
1567 /**
1568 *
1569 * - encoding: unused
1570 * - decoding: set by user.
1571 */
1572 uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1573 #endif
1574
1575 /**
1576 * slice flags
1577 * - encoding: unused
1578 * - decoding: set by user.
1579 */
1580 int slice_flags;
1581 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1582 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1583 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1584
1585 /**
1586 * XVideo Motion Acceleration
1587 * - encoding: forbidden
1588 * - decoding: set by decoder
1589 */
1590 int xvmc_acceleration;
1591
1592 /**
1593 * macroblock decision mode
1594 * - encoding: set by user.
1595 * - decoding: unused
1596 */
1597 int mb_decision;
1598 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1599 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1600 #define FF_MB_DECISION_RD 2 ///< rate distoration
1601
1602 /**
1603 * custom intra quantization matrix
1604 * - encoding: set by user, can be NULL
1605 * - decoding: set by lavc
1606 */
1607 uint16_t *intra_matrix;
1608
1609 /**
1610 * custom inter quantization matrix
1611 * - encoding: set by user, can be NULL
1612 * - decoding: set by lavc
1613 */
1614 uint16_t *inter_matrix;
1615
1616 /**
1617 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1618 * this is used to workaround some encoder bugs
1619 * - encoding: unused
1620 * - decoding: set by user, will be converted to upper case by lavc during init
1621 */
1622 unsigned int stream_codec_tag;
1623
1624 /**
1625 * scene change detection threshold.
1626 * 0 is default, larger means fewer detected scene changes
1627 * - encoding: set by user.
1628 * - decoding: unused
1629 */
1630 int scenechange_threshold;
1631
1632 /**
1633 * minimum lagrange multipler
1634 * - encoding: set by user.
1635 * - decoding: unused
1636 */
1637 int lmin;
1638
1639 /**
1640 * maximum lagrange multipler
1641 * - encoding: set by user.
1642 * - decoding: unused
1643 */
1644 int lmax;
1645
1646 /**
1647 * Palette control structure
1648 * - encoding: ??? (no palette-enabled encoder yet)
1649 * - decoding: set by user.
1650 */
1651 struct AVPaletteControl *palctrl;
1652
1653 /**
1654 * noise reduction strength
1655 * - encoding: set by user.
1656 * - decoding: unused
1657 */
1658 int noise_reduction;
1659
1660 /**
1661 * called at the beginning of a frame to get cr buffer for it.
1662 * buffer type (size, hints) must be the same. lavc won't check it.
1663 * lavc will pass previous buffer in pic, function should return
1664 * same buffer or new buffer with old frame "painted" into it.
1665 * if pic.data[0] == NULL must behave like get_buffer().
1666 * - encoding: unused
1667 * - decoding: set by lavc, user can override
1668 */
1669 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1670
1671 /**
1672 * number of bits which should be loaded into the rc buffer before decoding starts
1673 * - encoding: set by user.
1674 * - decoding: unused
1675 */
1676 int rc_initial_buffer_occupancy;
1677
1678 /**
1679 *
1680 * - encoding: set by user.
1681 * - decoding: unused
1682 */
1683 int inter_threshold;
1684
1685 /**
1686 * CODEC_FLAG2_*.
1687 * - encoding: set by user.
1688 * - decoding: set by user.
1689 */
1690 int flags2;
1691
1692 /**
1693 * simulates errors in the bitstream to test error concealment.
1694 * - encoding: set by user.
1695 * - decoding: unused.
1696 */
1697 int error_rate;
1698
1699 /**
1700 * MP3 antialias algorithm, see FF_AA_* below.
1701 * - encoding: unused
1702 * - decoding: set by user
1703 */
1704 int antialias_algo;
1705 #define FF_AA_AUTO 0
1706 #define FF_AA_FASTINT 1 //not implemented yet
1707 #define FF_AA_INT 2
1708 #define FF_AA_FLOAT 3
1709 /**
1710 * Quantizer noise shaping.
1711 * - encoding: set by user
1712 * - decoding: unused
1713 */
1714 int quantizer_noise_shaping;
1715
1716 /**
1717 * Thread count.
1718 * is used to decide how many independant tasks should be passed to execute()
1719 * - encoding: set by user
1720 * - decoding: set by user
1721 */
1722 int thread_count;
1723
1724 /**
1725 * the codec may call this to execute several independant things. it will return only after
1726 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1727 * default implementation will execute the parts serially
1728 * @param count the number of things to execute
1729 * - encoding: set by lavc, user can override
1730 * - decoding: set by lavc, user can override
1731 */
1732 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1733
1734 /**
1735 * Thread opaque.
1736 * can be used by execute() to store some per AVCodecContext stuff.
1737 * - encoding: set by execute()
1738 * - decoding: set by execute()
1739 */
1740 void *thread_opaque;
1741
1742 /**
1743 * Motion estimation threshold. under which no motion estimation is
1744 * performed, but instead the user specified motion vectors are used
1745 *
1746 * - encoding: set by user
1747 * - decoding: unused
1748 */
1749 int me_threshold;
1750
1751 /**
1752 * Macroblock threshold. under which the user specified macroblock types will be used
1753 * - encoding: set by user
1754 * - decoding: unused
1755 */
1756 int mb_threshold;
1757
1758 /**
1759 * precision of the intra dc coefficient - 8.
1760 * - encoding: set by user
1761 * - decoding: unused
1762 */
1763 int intra_dc_precision;
1764
1765 /**
1766 * noise vs. sse weight for the nsse comparsion function.
1767 * - encoding: set by user
1768 * - decoding: unused
1769 */
1770 int nsse_weight;
1771
1772 /**
1773 * number of macroblock rows at the top which are skipped.
1774 * - encoding: unused
1775 * - decoding: set by user
1776 */
1777 int skip_top;
1778
1779 /**
1780 * number of macroblock rows at the bottom which are skipped.
1781 * - encoding: unused
1782 * - decoding: set by user
1783 */
1784 int skip_bottom;
1785
1786 /**
1787 * profile
1788 * - encoding: set by user
1789 * - decoding: set by lavc
1790 */
1791 int profile;
1792 #define FF_PROFILE_UNKNOWN -99
1793
1794 /**
1795 * level
1796 * - encoding: set by user
1797 * - decoding: set by lavc
1798 */
1799 int level;
1800 #define FF_LEVEL_UNKNOWN -99
1801
1802 /**
1803 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1804 * - encoding: unused
1805 * - decoding: set by user
1806 */
1807 int lowres;
1808
1809 /**
1810 * bitsream width / height. may be different from width/height if lowres
1811 * or other things are used
1812 * - encoding: unused
1813 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1814 */
1815 int coded_width, coded_height;
1816
1817 /**
1818 * frame skip threshold
1819 * - encoding: set by user
1820 * - decoding: unused
1821 */
1822 int frame_skip_threshold;
1823
1824 /**
1825 * frame skip factor
1826 * - encoding: set by user
1827 * - decoding: unused
1828 */
1829 int frame_skip_factor;
1830
1831 /**
1832 * frame skip exponent
1833 * - encoding: set by user
1834 * - decoding: unused
1835 */
1836 int frame_skip_exp;
1837
1838 /**
1839 * frame skip comparission function
1840 * - encoding: set by user.
1841 * - decoding: unused
1842 */
1843 int frame_skip_cmp;
1844
1845 /**
1846 * border processing masking. raises the quantizer for mbs on the borders
1847 * of the picture.
1848 * - encoding: set by user
1849 * - decoding: unused
1850 */
1851 float border_masking;
1852
1853 /**
1854 * minimum MB lagrange multipler.
1855 * - encoding: set by user.
1856 * - decoding: unused
1857 */
1858 int mb_lmin;
1859
1860 /**
1861 * maximum MB lagrange multipler.
1862 * - encoding: set by user.
1863 * - decoding: unused
1864 */
1865 int mb_lmax;
1866
1867 /**
1868 *
1869 * - encoding: set by user.
1870 * - decoding: unused
1871 */
1872 int me_penalty_compensation;
1873
1874 /**
1875 *
1876 * - encoding: unused
1877 * - decoding: set by user.
1878 */
1879 enum AVDiscard skip_loop_filter;
1880
1881 /**
1882 *
1883 * - encoding: unused
1884 * - decoding: set by user.
1885 */
1886 enum AVDiscard skip_idct;
1887
1888 /**
1889 *
1890 * - encoding: unused
1891 * - decoding: set by user.
1892 */
1893 enum AVDiscard skip_frame;
1894
1895 /**
1896 *
1897 * - encoding: set by user.
1898 * - decoding: unused
1899 */
1900 int bidir_refine;
1901
1902 /**
1903 *
1904 * - encoding: set by user.
1905 * - decoding: unused
1906 */
1907 int brd_scale;
1908
1909 /**
1910 * constant rate factor - quality-based VBR - values ~correspond to qps
1911 * - encoding: set by user.
1912 * - decoding: unused
1913 */
1914 int crf;
1915
1916 /**
1917 * constant quantization parameter rate control method
1918 * - encoding: set by user.
1919 * - decoding: unused
1920 */
1921 int cqp;
1922
1923 /**
1924 * minimum gop size
1925 * - encoding: set by user.
1926 * - decoding: unused
1927 */
1928 int keyint_min;
1929
1930 /**
1931 * number of reference frames
1932 * - encoding: set by user.
1933 * - decoding: unused
1934 */
1935 int refs;
1936
1937 /**
1938 * chroma qp offset from luma
1939 * - encoding: set by user.
1940 * - decoding: unused
1941 */
1942 int chromaoffset;
1943
1944 /**
1945 * influences how often b-frames are used
1946 * - encoding: set by user.
1947 * - decoding: unused
1948 */
1949 int bframebias;
1950
1951 /**
1952 * trellis RD quantization
1953 * - encoding: set by user.
1954 * - decoding: unused
1955 */
1956 int trellis;
1957
1958 /**
1959 * reduce fluctuations in qp (before curve compression)
1960 * - encoding: set by user.
1961 * - decoding: unused
1962 */
1963 float complexityblur;
1964
1965 /**
1966 * in-loop deblocking filter alphac0 parameter
1967 * alpha is in the range -6...6
1968 * - encoding: set by user.
1969 * - decoding: unused
1970 */
1971 int deblockalpha;
1972
1973 /**
1974 * in-loop deblocking filter beta parameter
1975 * beta is in the range -6...6
1976 * - encoding: set by user.
1977 * - decoding: unused
1978 */
1979 int deblockbeta;
1980
1981 /**
1982 * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1983 * - encoding: set by user.
1984 * - decoding: unused
1985 */
1986 int partitions;
1987 #define X264_PART_I4X4 0x001 /* Analyse i4x4 */
1988 #define X264_PART_I8X8 0x002 /* Analyse i8x8 (requires 8x8 transform) */
1989 #define X264_PART_P8X8 0x010 /* Analyse p16x8, p8x16 and p8x8 */
1990 #define X264_PART_P4X4 0x020 /* Analyse p8x4, p4x8, p4x4 */
1991 #define X264_PART_B8X8 0x100 /* Analyse b16x8, b8x16 and b8x8 */
1992
1993 /**
1994 * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1995 * - encoding: set by user.
1996 * - decoding: unused
1997 */
1998 int directpred;
1999
2000 /**
2001 * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
2002 * - encoding: set by user.
2003 * - decoding: unused
2004 */
2005 int cutoff;
2006
2007 /**
2008 * multiplied by qscale for each frame and added to scene_change_score
2009 * - encoding: set by user.
2010 * - decoding: unused
2011 */
2012 int scenechange_factor;
2013 } AVCodecContext;
2014
2015 /**
2016 * AVCodec.
2017 */
2018 typedef struct AVCodec {
2019 const char *name;
2020 enum CodecType type;
2021 enum CodecID id;
2022 int priv_data_size;
2023 int (*init)(AVCodecContext *);
2024 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2025 int (*close)(AVCodecContext *);
2026 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2027 uint8_t *buf, int buf_size);
2028 int capabilities;
2029 #if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
2030 void *dummy; // FIXME remove next time we break binary compatibility
2031 #endif
2032 struct AVCodec *next;
2033 void (*flush)(AVCodecContext *);
2034 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2035 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2036 } AVCodec;
2037
2038 /**
2039 * four components are given, that's all.
2040 * the last component is alpha
2041 */
2042 typedef struct AVPicture {
2043 uint8_t *data[4];
2044 int linesize[4]; ///< number of bytes per line
2045 } AVPicture;
2046
2047 /**
2048 * AVPaletteControl
2049 * This structure defines a method for communicating palette changes
2050 * between and demuxer and a decoder.
2051 */
2052 #define AVPALETTE_SIZE 1024
2053 #define AVPALETTE_COUNT 256
2054 typedef struct AVPaletteControl {
2055
2056 /* demuxer sets this to 1 to indicate the palette has changed;
2057 * decoder resets to 0 */
2058 int palette_changed;
2059
2060 /* 4-byte ARGB palette entries, stored in native byte order; note that
2061 * the individual palette components should be on a 8-bit scale; if
2062 * the palette data comes from a IBM VGA native format, the component
2063 * data is probably 6 bits in size and needs to be scaled */
2064 unsigned int palette[AVPALETTE_COUNT];
2065
2066 } AVPaletteControl;
2067
2068 typedef struct AVSubtitleRect {
2069 uint16_t x;
2070 uint16_t y;
2071 uint16_t w;
2072 uint16_t h;
2073 uint16_t nb_colors;
2074 int linesize;
2075 uint32_t *rgba_palette;
2076 uint8_t *bitmap;
2077 } AVSubtitleRect;
2078
2079 typedef struct AVSubtitle {
2080 uint16_t format; /* 0 = graphics */
2081 uint32_t start_display_time; /* relative to packet pts, in ms */
2082 uint32_t end_display_time; /* relative to packet pts, in ms */
2083 uint32_t num_rects;
2084 AVSubtitleRect *rects;
2085 } AVSubtitle;
2086
2087 extern AVCodec ac3_encoder;
2088 extern AVCodec mp2_encoder;
2089 extern AVCodec mp3lame_encoder;
2090 extern AVCodec oggvorbis_encoder;
2091 extern AVCodec oggtheora_encoder;
2092 extern AVCodec faac_encoder;
2093 extern AVCodec xvid_encoder;
2094 extern AVCodec mpeg1video_encoder;
2095 extern AVCodec mpeg2video_encoder;
2096 extern AVCodec h261_encoder;
2097 extern AVCodec h263_encoder;
2098 extern AVCodec h263p_encoder;
2099 extern AVCodec flv_encoder;
2100 extern AVCodec rv10_encoder;
2101 extern AVCodec rv20_encoder;
2102 extern AVCodec dvvideo_encoder;
2103 extern AVCodec mjpeg_encoder;
2104 extern AVCodec ljpeg_encoder;
2105 extern AVCodec jpegls_encoder;
2106 extern AVCodec png_encoder;
2107 extern AVCodec ppm_encoder;
2108 extern AVCodec pgm_encoder;
2109 extern AVCodec pgmyuv_encoder;
2110 extern AVCodec pbm_encoder;
2111 extern AVCodec pam_encoder;
2112 extern AVCodec mpeg4_encoder;
2113 extern AVCodec msmpeg4v1_encoder;
2114 extern AVCodec msmpeg4v2_encoder;
2115 extern AVCodec msmpeg4v3_encoder;
2116 extern AVCodec wmv1_encoder;
2117 extern AVCodec wmv2_encoder;
2118 extern AVCodec huffyuv_encoder;
2119 extern AVCodec ffvhuff_encoder;
2120 extern AVCodec h264_encoder;
2121 extern AVCodec asv1_encoder;
2122 extern AVCodec asv2_encoder;
2123 extern AVCodec vcr1_encoder;
2124 extern AVCodec ffv1_encoder;
2125 extern AVCodec snow_encoder;
2126 extern AVCodec mdec_encoder;
2127 extern AVCodec zlib_encoder;
2128 extern AVCodec sonic_encoder;
2129 extern AVCodec sonic_ls_encoder;
2130 extern AVCodec svq1_encoder;
2131 extern AVCodec x264_encoder;
2132
2133 extern AVCodec h263_decoder;
2134 extern AVCodec h261_decoder;
2135 extern AVCodec mpeg4_decoder;
2136 extern AVCodec msmpeg4v1_decoder;
2137 extern AVCodec msmpeg4v2_decoder;
2138 extern AVCodec msmpeg4v3_decoder;
2139 extern AVCodec wmv1_decoder;
2140 extern AVCodec wmv2_decoder;
2141 extern AVCodec vc9_decoder;
2142 extern AVCodec wmv3_decoder;
2143 extern AVCodec mpeg1video_decoder;
2144 extern AVCodec mpeg2video_decoder;
2145 extern AVCodec mpegvideo_decoder;
2146 extern AVCodec mpeg_xvmc_decoder;
2147 extern AVCodec h263i_decoder;
2148 extern AVCodec flv_decoder;
2149 extern AVCodec rv10_decoder;
2150 extern AVCodec rv20_decoder;
2151 extern AVCodec rv30_decoder;
2152 extern AVCodec rv40_decoder;
2153 extern AVCodec svq1_decoder;
2154 extern AVCodec svq3_decoder;
2155 extern AVCodec dvvideo_decoder;
2156 extern AVCodec wmav1_decoder;
2157 extern AVCodec wmav2_decoder;
2158 extern AVCodec mjpeg_decoder;
2159 extern AVCodec mjpegb_decoder;
2160 extern AVCodec sp5x_decoder;
2161 extern AVCodec png_decoder;
2162 extern AVCodec mp2_decoder;
2163 extern AVCodec mp3_decoder;
2164 extern AVCodec mp3adu_decoder;
2165 extern AVCodec mp3on4_decoder;
2166 extern AVCodec qdm2_decoder;
2167 extern AVCodec cook_decoder;
2168 extern AVCodec truespeech_decoder;
2169 extern AVCodec tta_decoder;
2170 extern AVCodec mace3_decoder;
2171 extern AVCodec mace6_decoder;
2172 extern AVCodec huffyuv_decoder;
2173 extern AVCodec ffvhuff_decoder;
2174 extern AVCodec oggvorbis_decoder;
2175 extern AVCodec oggtheora_decoder;
2176 extern AVCodec cyuv_decoder;
2177 extern AVCodec h264_decoder;
2178 extern AVCodec indeo3_decoder;
2179 extern AVCodec vp3_decoder;
2180 extern AVCodec theora_decoder;
2181 extern AVCodec amr_nb_decoder;
2182 extern AVCodec amr_nb_encoder;
2183 extern AVCodec amr_wb_encoder;
2184 extern AVCodec amr_wb_decoder;
2185 extern AVCodec aac_decoder;
2186 extern AVCodec mpeg4aac_decoder;
2187 extern AVCodec asv1_decoder;
2188 extern AVCodec asv2_decoder;
2189 extern AVCodec vcr1_decoder;
2190 extern AVCodec cljr_decoder;
2191 extern AVCodec ffv1_decoder;
2192 extern AVCodec snow_decoder;
2193 extern AVCodec fourxm_decoder;
2194 extern AVCodec mdec_decoder;
2195 extern AVCodec roq_decoder;
2196 extern AVCodec interplay_video_decoder;
2197 extern AVCodec xan_wc3_decoder;
2198 extern AVCodec rpza_decoder;
2199 extern AVCodec cinepak_decoder;
2200 extern AVCodec msrle_decoder;
2201 extern AVCodec msvideo1_decoder;
2202 extern AVCodec vqa_decoder;
2203 extern AVCodec idcin_decoder;
2204 extern AVCodec eightbps_decoder;
2205 extern AVCodec smc_decoder;
2206 extern AVCodec flic_decoder;
2207 extern AVCodec vmdvideo_decoder;
2208 extern AVCodec vmdaudio_decoder;
2209 extern AVCodec truemotion1_decoder;
2210 extern AVCodec truemotion2_decoder;
2211 extern AVCodec mszh_decoder;
2212 extern AVCodec zlib_decoder;
2213 extern AVCodec ra_144_decoder;
2214 extern AVCodec ra_288_decoder;
2215 extern AVCodec roq_dpcm_decoder;
2216 extern AVCodec interplay_dpcm_decoder;
2217 extern AVCodec xan_dpcm_decoder;
2218 extern AVCodec sol_dpcm_decoder;
2219 extern AVCodec sonic_decoder;
2220 extern AVCodec qtrle_decoder;
2221 extern AVCodec flac_decoder;
2222 extern AVCodec tscc_decoder;
2223 extern AVCodec cscd_decoder;
2224 extern AVCodec ulti_decoder;
2225 extern AVCodec qdraw_decoder;
2226 extern AVCodec xl_decoder;
2227 extern AVCodec qpeg_decoder;
2228 extern AVCodec shorten_decoder;
2229 extern AVCodec loco_decoder;
2230 extern AVCodec wnv1_decoder;
2231 extern AVCodec aasc_decoder;
2232 extern AVCodec alac_decoder;
2233 extern AVCodec ws_snd1_decoder;
2234 extern AVCodec indeo2_decoder;
2235 extern AVCodec vorbis_decoder;
2236 extern AVCodec fraps_decoder;
2237 extern AVCodec libgsm_encoder;
2238 extern AVCodec libgsm_decoder;
2239 extern AVCodec bmp_decoder;
2240 extern AVCodec mmvideo_decoder;
2241 extern AVCodec zmbv_decoder;
2242 extern AVCodec avs_decoder;
2243 extern AVCodec smacker_decoder;
2244 extern AVCodec smackaud_decoder;
2245
2246 /* pcm codecs */
2247 #define PCM_CODEC(id, name) \
2248 extern AVCodec name ## _decoder; \
2249 extern AVCodec name ## _encoder
2250
2251 PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2252 PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2253 PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2254 PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2255 PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2256 PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2257 PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2258 PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2259 PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2260 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2261 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2262 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2263 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2264 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2265 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2266 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2267 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2268
2269 /* adpcm codecs */
2270
2271 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2272 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2273 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2274 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2275 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2276 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2277 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2278 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2279 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2280 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2281 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2282 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2283 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2284 PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2285 PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2286 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2287 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2288 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2289
2290 #undef PCM_CODEC
2291
2292 /* dummy raw video codec */
2293 extern AVCodec rawvideo_encoder;
2294 extern AVCodec rawvideo_decoder;
2295
2296 /* the following codecs use external GPL libs */
2297 extern AVCodec ac3_decoder;
2298 extern AVCodec dts_decoder;
2299
2300 /* subtitles */
2301 extern AVCodec dvdsub_encoder;
2302 extern AVCodec dvdsub_decoder;
2303 extern AVCodec dvbsub_encoder;
2304 extern AVCodec dvbsub_decoder;
2305
2306 /* resample.c */
2307
2308 struct ReSampleContext;
2309 struct AVResampleContext;
2310
2311 typedef struct ReSampleContext ReSampleContext;
2312
2313 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2314 int output_rate, int input_rate);
2315 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2316 void audio_resample_close(ReSampleContext *s);
2317
2318 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2319 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2320 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2321 void av_resample_close(struct AVResampleContext *c);
2322
2323 /* YUV420 format is assumed ! */
2324
2325 struct ImgReSampleContext;
2326
2327 typedef struct ImgReSampleContext ImgReSampleContext;
2328
2329 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2330 int input_width, int input_height);
2331
2332 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2333 int iwidth, int iheight,
2334 int topBand, int bottomBand,
2335 int leftBand, int rightBand,
2336 int padtop, int padbottom,
2337 int padleft, int padright);
2338
2339
2340 void img_resample(ImgReSampleContext *s,
2341 AVPicture *output, const AVPicture *input);
2342
2343 void img_resample_close(ImgReSampleContext *s);
2344
2345 /**
2346 * Allocate memory for a picture. Call avpicture_free to free it.
2347 *
2348 * @param picture the picture to be filled in.
2349 * @param pix_fmt the format of the picture.
2350 * @param width the width of the picture.
2351 * @param height the height of the picture.
2352 * @return 0 if successful, -1 if not.
2353 */
2354 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2355
2356 /* Free a picture previously allocated by avpicture_alloc. */
2357 void avpicture_free(AVPicture *picture);
2358
2359 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2360 int pix_fmt, int width, int height);
2361 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2362 unsigned char *dest, int dest_size);
2363 int avpicture_get_size(int pix_fmt, int width, int height);
2364 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2365 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2366 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2367 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2368 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2369
2370 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2371 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2372 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2373 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2374 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2375 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2376
2377 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2378 int has_alpha);
2379 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2380 int has_alpha, int *loss_ptr);
2381
2382 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2383 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2384 int img_get_alpha_info(const AVPicture *src,
2385 int pix_fmt, int width, int height);
2386
2387 /* convert among pixel formats */
2388 int img_convert(AVPicture *dst, int dst_pix_fmt,
2389 const AVPicture *src, int pix_fmt,
2390 int width, int height);
2391
2392 /* deinterlace a picture */
2393 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2394 int pix_fmt, int width, int height);
2395
2396 /* external high level API */
2397
2398 extern AVCodec *first_avcodec;
2399
2400 /* returns LIBAVCODEC_VERSION_INT constant */
2401 unsigned avcodec_version(void);
2402 /* returns LIBAVCODEC_BUILD constant */
2403 unsigned avcodec_build(void);
2404 void avcodec_init(void);
2405
2406 void register_avcodec(AVCodec *format);
2407 AVCodec *avcodec_find_encoder(enum CodecID id);
2408 AVCodec *avcodec_find_encoder_by_name(const char *name);
2409 AVCodec *avcodec_find_decoder(enum CodecID id);
2410 AVCodec *avcodec_find_decoder_by_name(const char *name);
2411 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2412
2413 void avcodec_get_context_defaults(AVCodecContext *s);
2414 AVCodecContext *avcodec_alloc_context(void);
2415 void avcodec_get_frame_defaults(AVFrame *pic);
2416 AVFrame *avcodec_alloc_frame(void);
2417
2418 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2419 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2420 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2421 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2422 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2423 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2424
2425 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2426 void avcodec_thread_free(AVCodecContext *s);
2427 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2428 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2429 //FIXME func typedef
2430
2431 /**
2432 * opens / inits the AVCodecContext.
2433 * not thread save!
2434 */
2435 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2436
2437 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2438 int *frame_size_ptr,
2439 uint8_t *buf, int buf_size);
2440 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2441 int *got_picture_ptr,
2442 uint8_t *buf, int buf_size);
2443 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2444 int *got_sub_ptr,
2445 const uint8_t *buf, int buf_size);
2446 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2447 int *data_size_ptr,
2448 uint8_t *buf, int buf_size);
2449 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2450 const short *samples);
2451 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2452 const AVFrame *pict);
2453 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2454 const AVSubtitle *sub);
2455
2456 int avcodec_close(AVCodecContext *avctx);
2457
2458 void avcodec_register_all(void);
2459
2460 void avcodec_flush_buffers(AVCodecContext *avctx);
2461
2462 void avcodec_default_free_buffers(AVCodecContext *s);
2463
2464 /* misc usefull functions */
2465
2466 /**
2467 * returns a single letter to describe the picture type
2468 */
2469 char av_get_pict_type_char(int pict_type);
2470
2471
2472 /* frame parsing */
2473 typedef struct AVCodecParserContext {
2474 void *priv_data;
2475 struct AVCodecParser *parser;
2476 int64_t frame_offset; /* offset of the current frame */
2477 int64_t cur_offset; /* current offset
2478 (incremented by each av_parser_parse()) */
2479 int64_t last_frame_offset; /* offset of the last frame */
2480 /* video info */
2481 int pict_type; /* XXX: put it back in AVCodecContext */
2482 int repeat_pict; /* XXX: put it back in AVCodecContext */
2483 int64_t pts; /* pts of the current frame */
2484 int64_t dts; /* dts of the current frame */
2485
2486 /* private data */
2487 int64_t last_pts;
2488 int64_t last_dts;
2489 int fetch_timestamp;
2490
2491 #define AV_PARSER_PTS_NB 4
2492 int cur_frame_start_index;
2493 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2494 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2495 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2496
2497 int flags;
2498 #define PARSER_FLAG_COMPLETE_FRAMES 0x0001
2499 } AVCodecParserContext;
2500
2501 typedef struct AVCodecParser {
2502 int codec_ids[5]; /* several codec IDs are permitted */
2503 int priv_data_size;
2504 int (*parser_init)(AVCodecParserContext *s);
2505 int (*parser_parse)(AVCodecParserContext *s,
2506 AVCodecContext *avctx,
2507 uint8_t **poutbuf, int *poutbuf_size,
2508 const uint8_t *buf, int buf_size);
2509 void (*parser_close)(AVCodecParserContext *s);
2510 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2511 struct AVCodecParser *next;
2512 } AVCodecParser;
2513
2514 extern AVCodecParser *av_first_parser;
2515
2516 void av_register_codec_parser(AVCodecParser *parser);
2517 AVCodecParserContext *av_parser_init(int codec_id);
2518 int av_parser_parse(AVCodecParserContext *s,
2519 AVCodecContext *avctx,
2520 uint8_t **poutbuf, int *poutbuf_size,
2521 const uint8_t *buf, int buf_size,
2522 int64_t pts, int64_t dts);
2523 int av_parser_change(AVCodecParserContext *s,
2524 AVCodecContext *avctx,
2525 uint8_t **poutbuf, int *poutbuf_size,
2526 const uint8_t *buf, int buf_size, int keyframe);
2527 void av_parser_close(AVCodecParserContext *s);
2528
2529 extern AVCodecParser mpegvideo_parser;
2530 extern AVCodecParser mpeg4video_parser;
2531 extern AVCodecParser h261_parser;
2532 extern AVCodecParser h263_parser;
2533 extern AVCodecParser h264_parser;
2534 extern AVCodecParser mjpeg_parser;
2535 extern AVCodecParser pnm_parser;
2536 extern AVCodecParser mpegaudio_parser;
2537 extern AVCodecParser ac3_parser;
2538 extern AVCodecParser dvdsub_parser;
2539 extern AVCodecParser dvbsub_parser;
2540 extern AVCodecParser aac_parser;
2541
2542 /* memory */
2543 void *av_malloc(unsigned int size);
2544 void *av_mallocz(unsigned int size);
2545 void *av_realloc(void *ptr, unsigned int size);
2546 void av_free(void *ptr);
2547 char *av_strdup(const char *s);
2548 void av_freep(void *ptr);
2549 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2550 /* for static data only */
2551 /* call av_free_static to release all staticaly allocated tables */
2552 void av_free_static(void);
2553 void *av_mallocz_static(unsigned int size);
2554 void *av_realloc_static(void *ptr, unsigned int size);
2555
2556 /* add by bero : in adx.c */
2557 int is_adx(const unsigned char *buf,size_t bufsize);
2558
2559 void img_copy(AVPicture *dst, const AVPicture *src,
2560 int pix_fmt, int width, int height);
2561
2562 int img_crop(AVPicture *dst, const AVPicture *src,
2563 int pix_fmt, int top_band, int left_band);
2564
2565 /* av_log API */
2566
2567 #include <stdarg.h>
2568
2569 #define AV_LOG_QUIET -1
2570 #define AV_LOG_ERROR 0
2571 #define AV_LOG_INFO 1
2572 #define AV_LOG_DEBUG 2
2573
2574 #ifdef __GNUC__
2575 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2576 #else
2577 extern void av_log(void*, int level, const char *fmt, ...);
2578 #endif
2579
2580 extern void av_vlog(void*, int level, const char *fmt, va_list);
2581 extern int av_log_get_level(void);
2582 extern void av_log_set_level(int);
2583 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2584
2585 /* endian macros */
2586 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2587 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2588 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2589 (((uint8_t*)(x))[1] << 16) | \
2590 (((uint8_t*)(x))[2] << 8) | \
2591 ((uint8_t*)(x))[3])
2592 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2593 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2594 (((uint8_t*)(x))[2] << 16) | \
2595 (((uint8_t*)(x))[1] << 8) | \
2596 ((uint8_t*)(x))[0])
2597 #endif
2598
2599 extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2600
2601 #ifdef __cplusplus
2602 }
2603 #endif
2604
2605 #endif /* AVCODEC_H */