ed82342fe6ff8c0a651b39be5a9942afbab62e28
[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 CODEC_ID_NUV,
123
124 /* various pcm "codecs" */
125 CODEC_ID_PCM_S16LE= 0x10000,
126 CODEC_ID_PCM_S16BE,
127 CODEC_ID_PCM_U16LE,
128 CODEC_ID_PCM_U16BE,
129 CODEC_ID_PCM_S8,
130 CODEC_ID_PCM_U8,
131 CODEC_ID_PCM_MULAW,
132 CODEC_ID_PCM_ALAW,
133 CODEC_ID_PCM_S32LE,
134 CODEC_ID_PCM_S32BE,
135 CODEC_ID_PCM_U32LE,
136 CODEC_ID_PCM_U32BE,
137 CODEC_ID_PCM_S24LE,
138 CODEC_ID_PCM_S24BE,
139 CODEC_ID_PCM_U24LE,
140 CODEC_ID_PCM_U24BE,
141 CODEC_ID_PCM_S24DAUD,
142
143 /* various adpcm codecs */
144 CODEC_ID_ADPCM_IMA_QT= 0x11000,
145 CODEC_ID_ADPCM_IMA_WAV,
146 CODEC_ID_ADPCM_IMA_DK3,
147 CODEC_ID_ADPCM_IMA_DK4,
148 CODEC_ID_ADPCM_IMA_WS,
149 CODEC_ID_ADPCM_IMA_SMJPEG,
150 CODEC_ID_ADPCM_MS,
151 CODEC_ID_ADPCM_4XM,
152 CODEC_ID_ADPCM_XA,
153 CODEC_ID_ADPCM_ADX,
154 CODEC_ID_ADPCM_EA,
155 CODEC_ID_ADPCM_G726,
156 CODEC_ID_ADPCM_CT,
157 CODEC_ID_ADPCM_SWF,
158 CODEC_ID_ADPCM_YAMAHA,
159 CODEC_ID_ADPCM_SBPRO_4,
160 CODEC_ID_ADPCM_SBPRO_3,
161 CODEC_ID_ADPCM_SBPRO_2,
162
163 /* AMR */
164 CODEC_ID_AMR_NB= 0x12000,
165 CODEC_ID_AMR_WB,
166
167 /* RealAudio codecs*/
168 CODEC_ID_RA_144= 0x13000,
169 CODEC_ID_RA_288,
170
171 /* various DPCM codecs */
172 CODEC_ID_ROQ_DPCM= 0x14000,
173 CODEC_ID_INTERPLAY_DPCM,
174 CODEC_ID_XAN_DPCM,
175 CODEC_ID_SOL_DPCM,
176
177 CODEC_ID_MP2= 0x15000,
178 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
179 CODEC_ID_AAC,
180 CODEC_ID_MPEG4AAC,
181 CODEC_ID_AC3,
182 CODEC_ID_DTS,
183 CODEC_ID_VORBIS,
184 CODEC_ID_DVAUDIO,
185 CODEC_ID_WMAV1,
186 CODEC_ID_WMAV2,
187 CODEC_ID_MACE3,
188 CODEC_ID_MACE6,
189 CODEC_ID_VMDAUDIO,
190 CODEC_ID_SONIC,
191 CODEC_ID_SONIC_LS,
192 CODEC_ID_FLAC,
193 CODEC_ID_MP3ADU,
194 CODEC_ID_MP3ON4,
195 CODEC_ID_SHORTEN,
196 CODEC_ID_ALAC,
197 CODEC_ID_WESTWOOD_SND1,
198 CODEC_ID_GSM,
199 CODEC_ID_QDM2,
200 CODEC_ID_COOK,
201 CODEC_ID_TRUESPEECH,
202 CODEC_ID_TTA,
203 CODEC_ID_SMACKAUDIO,
204
205 CODEC_ID_OGGTHEORA= 0x16000,
206
207 /* subtitle codecs */
208 CODEC_ID_DVD_SUBTITLE= 0x17000,
209 CODEC_ID_DVB_SUBTITLE,
210
211 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
212 stream (only used by libavformat) */
213 };
214
215 /* CODEC_ID_MP3LAME is absolete */
216 #define CODEC_ID_MP3LAME CODEC_ID_MP3
217
218 enum CodecType {
219 CODEC_TYPE_UNKNOWN = -1,
220 CODEC_TYPE_VIDEO,
221 CODEC_TYPE_AUDIO,
222 CODEC_TYPE_DATA,
223 CODEC_TYPE_SUBTITLE,
224 };
225
226 /**
227 * Pixel format. Notes:
228 *
229 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
230 * color is put together as:
231 * (A << 24) | (R << 16) | (G << 8) | B
232 * This is stored as BGRA on little endian CPU architectures and ARGB on
233 * big endian CPUs.
234 *
235 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
236 * image data is stored in AVFrame.data[0]. The palette is transported in
237 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
238 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
239 * also endian-specific). Note also that the individual RGB palette
240 * components stored in AVFrame.data[1] should be in the range 0..255.
241 * This is important as many custom PAL8 video codecs that were designed
242 * to run on the IBM VGA graphics adapter use 6-bit palette components.
243 */
244 enum PixelFormat {
245 PIX_FMT_NONE= -1,
246 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
247 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
248 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
249 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
250 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
251 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
252 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
253 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
254 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
255 PIX_FMT_RGB565, ///< always stored in cpu endianness
256 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
257 PIX_FMT_GRAY8,
258 PIX_FMT_MONOWHITE, ///< 0 is white
259 PIX_FMT_MONOBLACK, ///< 0 is black
260 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
261 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
262 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
263 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
264 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
265 PIX_FMT_XVMC_MPEG2_IDCT,
266 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
267 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
268 PIX_FMT_NB,
269 };
270
271 /* currently unused, may be used if 24/32 bits samples ever supported */
272 /* all in native endian */
273 enum SampleFormat {
274 SAMPLT_FMT_NONE = -1,
275 SAMPLE_FMT_U8, ///< unsigned 8 bits
276 SAMPLE_FMT_S16, ///< signed 16 bits
277 SAMPLE_FMT_S24, ///< signed 24 bits
278 SAMPLE_FMT_S32, ///< signed 32 bits
279 SAMPLE_FMT_FLT, ///< float
280 };
281
282 /* in bytes */
283 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
284
285 /**
286 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
287 * this is mainly needed because some optimized bitstream readers read
288 * 32 or 64 bit at once and could read over the end<br>
289 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
290 * MPEG bitstreams could cause overread and segfault
291 */
292 #define FF_INPUT_BUFFER_PADDING_SIZE 8
293
294 /**
295 * minimum encoding buffer size.
296 * used to avoid some checks during header writing
297 */
298 #define FF_MIN_BUFFER_SIZE 16384
299
300 /* motion estimation type, EPZS by default */
301 enum Motion_Est_ID {
302 ME_ZERO = 1,
303 ME_FULL,
304 ME_LOG,
305 ME_PHODS,
306 ME_EPZS,
307 ME_X1,
308 ME_HEX,
309 ME_UMH,
310 ME_ITER,
311 };
312
313 enum AVDiscard{
314 //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
315 AVDISCARD_NONE =-16, ///< discard nothing
316 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
317 AVDISCARD_NONREF = 8, ///< discard all non reference
318 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
319 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
320 AVDISCARD_ALL = 48, ///< discard all
321 };
322
323 typedef struct RcOverride{
324 int start_frame;
325 int end_frame;
326 int qscale; // if this is 0 then quality_factor will be used instead
327 float quality_factor;
328 } RcOverride;
329
330 /* only for ME compatiblity with old apps */
331 extern int motion_estimation_method;
332
333 #define FF_MAX_B_FRAMES 16
334
335 /* encoding support
336 these flags can be passed in AVCodecContext.flags before initing
337 Note: not everything is supported yet.
338 */
339
340 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
341 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
342 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
343 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
344 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
345 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
346 /* parent program gurantees that the input for b-frame containing streams is not written to
347 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
348 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
349 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
350 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
351 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
352 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
353 #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
354 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
355 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
356 of only at frame boundaries */
357 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
358 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
359 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
360 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
361 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
362 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
363 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
364 /* Fx : Flag for h263+ extra options */
365 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
366 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
367 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
368 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
369 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
370 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
371 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
372 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
373 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
374 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
375 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
376 #define CODEC_FLAG_CLOSED_GOP 0x80000000
377 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
378 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
379 #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
380 #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
381 #define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow b-frames to be used as references
382 #define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for b-frames
383 #define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 multiple references per partition
384 #define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform
385 #define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip
386 #define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters
387 #define CODEC_FLAG2_BRDO 0x00000400 ///< b-frame rate-distortion optimization
388
389 /* Unsupported options :
390 * Syntax Arithmetic coding (SAC)
391 * Reference Picture Selection
392 * Independant Segment Decoding */
393 /* /Fx */
394 /* codec capabilities */
395
396 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
397 /**
398 * Codec uses get_buffer() for allocating buffers.
399 * direct rendering method 1
400 */
401 #define CODEC_CAP_DR1 0x0002
402 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
403 used */
404 #define CODEC_CAP_PARSE_ONLY 0x0004
405 #define CODEC_CAP_TRUNCATED 0x0008
406 /* codec can export data for HW decoding (XvMC) */
407 #define CODEC_CAP_HWACCEL 0x0010
408 /**
409 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
410 * if this is not set, the codec is guranteed to never be feeded with NULL data
411 */
412 #define CODEC_CAP_DELAY 0x0020
413
414 //the following defines may change, don't expect compatibility if you use them
415 #define MB_TYPE_INTRA4x4 0x0001
416 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
417 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
418 #define MB_TYPE_16x16 0x0008
419 #define MB_TYPE_16x8 0x0010
420 #define MB_TYPE_8x16 0x0020
421 #define MB_TYPE_8x8 0x0040
422 #define MB_TYPE_INTERLACED 0x0080
423 #define MB_TYPE_DIRECT2 0x0100 //FIXME
424 #define MB_TYPE_ACPRED 0x0200
425 #define MB_TYPE_GMC 0x0400
426 #define MB_TYPE_SKIP 0x0800
427 #define MB_TYPE_P0L0 0x1000
428 #define MB_TYPE_P1L0 0x2000
429 #define MB_TYPE_P0L1 0x4000
430 #define MB_TYPE_P1L1 0x8000
431 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
432 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
433 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
434 #define MB_TYPE_QUANT 0x00010000
435 #define MB_TYPE_CBP 0x00020000
436 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
437
438 /**
439 * Pan Scan area.
440 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
441 */
442 typedef struct AVPanScan{
443 /**
444 * id.
445 * - encoding: set by user.
446 * - decoding: set by lavc
447 */
448 int id;
449
450 /**
451 * width and height in 1/16 pel
452 * - encoding: set by user.
453 * - decoding: set by lavc
454 */
455 int width;
456 int height;
457
458 /**
459 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
460 * - encoding: set by user.
461 * - decoding: set by lavc
462 */
463 int16_t position[3][2];
464 }AVPanScan;
465
466 #define FF_COMMON_FRAME \
467 /**\
468 * pointer to the picture planes.\
469 * this might be different from the first allocated byte\
470 * - encoding: \
471 * - decoding: \
472 */\
473 uint8_t *data[4];\
474 int linesize[4];\
475 /**\
476 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
477 * this isn't used by lavc unless the default get/release_buffer() is used\
478 * - encoding: \
479 * - decoding: \
480 */\
481 uint8_t *base[4];\
482 /**\
483 * 1 -> keyframe, 0-> not\
484 * - encoding: set by lavc\
485 * - decoding: set by lavc\
486 */\
487 int key_frame;\
488 \
489 /**\
490 * picture type of the frame, see ?_TYPE below.\
491 * - encoding: set by lavc for coded_picture (and set by user for input)\
492 * - decoding: set by lavc\
493 */\
494 int pict_type;\
495 \
496 /**\
497 * presentation timestamp in time_base units (time when frame should be shown to user)\
498 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
499 * - encoding: MUST be set by user\
500 * - decoding: set by lavc\
501 */\
502 int64_t pts;\
503 \
504 /**\
505 * picture number in bitstream order.\
506 * - encoding: set by\
507 * - decoding: set by lavc\
508 */\
509 int coded_picture_number;\
510 /**\
511 * picture number in display order.\
512 * - encoding: set by\
513 * - decoding: set by lavc\
514 */\
515 int display_picture_number;\
516 \
517 /**\
518 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
519 * - encoding: set by lavc for coded_picture (and set by user for input)\
520 * - decoding: set by lavc\
521 */\
522 int quality; \
523 \
524 /**\
525 * buffer age (1->was last buffer and dint change, 2->..., ...).\
526 * set to INT_MAX if the buffer has not been used yet \
527 * - encoding: unused\
528 * - decoding: MUST be set by get_buffer()\
529 */\
530 int age;\
531 \
532 /**\
533 * is this picture used as reference\
534 * - encoding: unused\
535 * - decoding: set by lavc (before get_buffer() call))\
536 */\
537 int reference;\
538 \
539 /**\
540 * QP table\
541 * - encoding: unused\
542 * - decoding: set by lavc\
543 */\
544 int8_t *qscale_table;\
545 /**\
546 * QP store stride\
547 * - encoding: unused\
548 * - decoding: set by lavc\
549 */\
550 int qstride;\
551 \
552 /**\
553 * mbskip_table[mb]>=1 if MB didnt change\
554 * stride= mb_width = (width+15)>>4\
555 * - encoding: unused\
556 * - decoding: set by lavc\
557 */\
558 uint8_t *mbskip_table;\
559 \
560 /**\
561 * Motion vector table.\
562 * @code\
563 * example:\
564 * int mv_sample_log2= 4 - motion_subsample_log2;\
565 * int mb_width= (width+15)>>4;\
566 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
567 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
568 * @endcode\
569 * - encoding: set by user\
570 * - decoding: set by lavc\
571 */\
572 int16_t (*motion_val[2])[2];\
573 \
574 /**\
575 * Macroblock type table\
576 * mb_type_base + mb_width + 2\
577 * - encoding: set by user\
578 * - decoding: set by lavc\
579 */\
580 uint32_t *mb_type;\
581 \
582 /**\
583 * log2 of the size of the block which a single vector in motion_val represents: \
584 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
585 * - encoding: unused\
586 * - decoding: set by lavc\
587 */\
588 uint8_t motion_subsample_log2;\
589 \
590 /**\
591 * for some private data of the user\
592 * - encoding: unused\
593 * - decoding: set by user\
594 */\
595 void *opaque;\
596 \
597 /**\
598 * error\
599 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
600 * - decoding: unused\
601 */\
602 uint64_t error[4];\
603 \
604 /**\
605 * type of the buffer (to keep track of who has to dealloc data[*])\
606 * - encoding: set by the one who allocs it\
607 * - decoding: set by the one who allocs it\
608 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
609 */\
610 int type;\
611 \
612 /**\
613 * when decoding, this signal how much the picture must be delayed.\
614 * extra_delay = repeat_pict / (2*fps)\
615 * - encoding: unused\
616 * - decoding: set by lavc\
617 */\
618 int repeat_pict;\
619 \
620 /**\
621 * \
622 */\
623 int qscale_type;\
624 \
625 /**\
626 * The content of the picture is interlaced.\
627 * - encoding: set by user\
628 * - decoding: set by lavc (default 0)\
629 */\
630 int interlaced_frame;\
631 \
632 /**\
633 * if the content is interlaced, is top field displayed first.\
634 * - encoding: set by user\
635 * - decoding: set by lavc\
636 */\
637 int top_field_first;\
638 \
639 /**\
640 * Pan scan.\
641 * - encoding: set by user\
642 * - decoding: set by lavc\
643 */\
644 AVPanScan *pan_scan;\
645 \
646 /**\
647 * tell user application that palette has changed from previous frame.\
648 * - encoding: ??? (no palette-enabled encoder yet)\
649 * - decoding: set by lavc (default 0)\
650 */\
651 int palette_has_changed;\
652 \
653 /**\
654 * Codec suggestion on buffer type if != 0\
655 * - encoding: unused\
656 * - decoding: set by lavc (before get_buffer() call))\
657 */\
658 int buffer_hints;\
659 \
660 /**\
661 * DCT coeffitients\
662 * - encoding: unused\
663 * - decoding: set by lavc\
664 */\
665 short *dct_coeff;\
666 \
667 /**\
668 * Motion referece frame index\
669 * - encoding: set by user\
670 * - decoding: set by lavc\
671 */\
672 int8_t *ref_index[2];
673
674 #define FF_QSCALE_TYPE_MPEG1 0
675 #define FF_QSCALE_TYPE_MPEG2 1
676 #define FF_QSCALE_TYPE_H264 2
677
678 #define FF_BUFFER_TYPE_INTERNAL 1
679 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
680 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
681 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
682
683
684 #define FF_I_TYPE 1 // Intra
685 #define FF_P_TYPE 2 // Predicted
686 #define FF_B_TYPE 3 // Bi-dir predicted
687 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
688 #define FF_SI_TYPE 5
689 #define FF_SP_TYPE 6
690
691 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
692 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
693 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
694 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
695
696 /**
697 * Audio Video Frame.
698 */
699 typedef struct AVFrame {
700 FF_COMMON_FRAME
701 } AVFrame;
702
703 #define DEFAULT_FRAME_RATE_BASE 1001000
704
705 /**
706 * Used by av_log
707 */
708 typedef struct AVCLASS AVClass;
709 struct AVCLASS {
710 const char* class_name;
711 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
712 or AVFormatContext, which begin with an AVClass.
713 Needed because av_log is in libavcodec and has no visibility
714 of AVIn/OutputFormat */
715 struct AVOption *option;
716 };
717
718 /**
719 * main external api structure.
720 */
721 typedef struct AVCodecContext {
722 /**
723 * Info on struct for av_log
724 * - set by avcodec_alloc_context
725 */
726 AVClass *av_class;
727 /**
728 * the average bitrate.
729 * - encoding: set by user. unused for constant quantizer encoding
730 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
731 */
732 int bit_rate;
733
734 /**
735 * number of bits the bitstream is allowed to diverge from the reference.
736 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
737 * - encoding: set by user. unused for constant quantizer encoding
738 * - decoding: unused
739 */
740 int bit_rate_tolerance;
741
742 /**
743 * CODEC_FLAG_*.
744 * - encoding: set by user.
745 * - decoding: set by user.
746 */
747 int flags;
748
749 /**
750 * some codecs needs additionnal format info. It is stored here
751 * - encoding: set by user.
752 * - decoding: set by lavc. (FIXME is this ok?)
753 */
754 int sub_id;
755
756 /**
757 * motion estimation algorithm used for video coding.
758 * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
759 * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
760 * - encoding: MUST be set by user.
761 * - decoding: unused
762 */
763 int me_method;
764
765 /**
766 * some codecs need / can use extra-data like huffman tables.
767 * mjpeg: huffman tables
768 * rv10: additional flags
769 * mpeg4: global headers (they can be in the bitstream or here)
770 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
771 * then extradata_size to avoid prolems if its read with the bitstream reader
772 * the bytewise contents of extradata must not depend on the architecture or cpu endianness
773 * - encoding: set/allocated/freed by lavc.
774 * - decoding: set/allocated/freed by user.
775 */
776 void *extradata;
777 int extradata_size;
778
779 /**
780 * this is the fundamental unit of time (in seconds) in terms
781 * of which frame timestamps are represented. for fixed-fps content,
782 * timebase should be 1/framerate and timestamp increments should be
783 * identically 1.
784 * - encoding: MUST be set by user
785 * - decoding: set by lavc.
786 */
787 AVRational time_base;
788
789 /* video only */
790 /**
791 * picture width / height.
792 * - encoding: MUST be set by user.
793 * - decoding: set by lavc.
794 * Note, for compatibility its possible to set this instead of
795 * coded_width/height before decoding
796 */
797 int width, height;
798
799 #define FF_ASPECT_EXTENDED 15
800
801 /**
802 * the number of pictures in a group of pitures, or 0 for intra_only.
803 * - encoding: set by user.
804 * - decoding: unused
805 */
806 int gop_size;
807
808 /**
809 * pixel format, see PIX_FMT_xxx.
810 * - encoding: set by user.
811 * - decoding: set by lavc.
812 */
813 enum PixelFormat pix_fmt;
814
815 /**
816 * Frame rate emulation. If not zero lower layer (i.e. format handler)
817 * has to read frames at native frame rate.
818 * - encoding: set by user.
819 * - decoding: unused.
820 */
821 int rate_emu;
822
823 /**
824 * if non NULL, 'draw_horiz_band' is called by the libavcodec
825 * decoder to draw an horizontal band. It improve cache usage. Not
826 * all codecs can do that. You must check the codec capabilities
827 * before
828 * - encoding: unused
829 * - decoding: set by user.
830 * @param height the height of the slice
831 * @param y the y position of the slice
832 * @param type 1->top field, 2->bottom field, 3->frame
833 * @param offset offset into the AVFrame.data from which the slice should be read
834 */
835 void (*draw_horiz_band)(struct AVCodecContext *s,
836 const AVFrame *src, int offset[4],
837 int y, int type, int height);
838
839 /* audio only */
840 int sample_rate; ///< samples per sec
841 int channels;
842
843 /**
844 * audio sample format.
845 * - encoding: set by user.
846 * - decoding: set by lavc.
847 */
848 enum SampleFormat sample_fmt; ///< sample format, currenly unused
849
850 /* the following data should not be initialized */
851 /**
852 * samples per packet. initialized when calling 'init'
853 */
854 int frame_size;
855 int frame_number; ///< audio or video frame number
856 int real_pict_num; ///< returns the real picture number of previous encoded frame
857
858 /**
859 * number of frames the decoded output will be delayed relative to
860 * the encoded input.
861 * - encoding: set by lavc.
862 * - decoding: unused
863 */
864 int delay;
865
866 /* - encoding parameters */
867 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
868 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
869
870 /**
871 * minimum quantizer.
872 * - encoding: set by user.
873 * - decoding: unused
874 */
875 int qmin;
876
877 /**
878 * maximum quantizer.
879 * - encoding: set by user.
880 * - decoding: unused
881 */
882 int qmax;
883
884 /**
885 * maximum quantizer difference etween frames.
886 * - encoding: set by user.
887 * - decoding: unused
888 */
889 int max_qdiff;
890
891 /**
892 * maximum number of b frames between non b frames.
893 * note: the output will be delayed by max_b_frames+1 relative to the input
894 * - encoding: set by user.
895 * - decoding: unused
896 */
897 int max_b_frames;
898
899 /**
900 * qscale factor between ip and b frames.
901 * - encoding: set by user.
902 * - decoding: unused
903 */
904 float b_quant_factor;
905
906 /** obsolete FIXME remove */
907 int rc_strategy;
908 #define FF_RC_STRATEGY_XVID 1
909
910 int b_frame_strategy;
911
912 /**
913 * hurry up amount.
914 * deprecated in favor of skip_idct and skip_frame
915 * - encoding: unused
916 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
917 */
918 int hurry_up;
919
920 struct AVCodec *codec;
921
922 void *priv_data;
923
924 /* unused, FIXME remove*/
925 int rtp_mode;
926
927 int rtp_payload_size; /* The size of the RTP payload: the coder will */
928 /* do it's best to deliver a chunk with size */
929 /* below rtp_payload_size, the chunk will start */
930 /* with a start code on some codecs like H.263 */
931 /* This doesn't take account of any particular */
932 /* headers inside the transmited RTP payload */
933
934
935 /* The RTP callback: This function is called */
936 /* every time the encoder has a packet to send */
937 /* Depends on the encoder if the data starts */
938 /* with a Start Code (it should) H.263 does. */
939 /* mb_nb contains the number of macroblocks */
940 /* encoded in the RTP payload */
941 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
942
943 /* statistics, used for 2-pass encoding */
944 int mv_bits;
945 int header_bits;
946 int i_tex_bits;
947 int p_tex_bits;
948 int i_count;
949 int p_count;
950 int skip_count;
951 int misc_bits;
952
953 /**
954 * number of bits used for the previously encoded frame.
955 * - encoding: set by lavc
956 * - decoding: unused
957 */
958 int frame_bits;
959
960 /**
961 * private data of the user, can be used to carry app specific stuff.
962 * - encoding: set by user
963 * - decoding: set by user
964 */
965 void *opaque;
966
967 char codec_name[32];
968 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
969 enum CodecID codec_id; /* see CODEC_ID_xxx */
970
971 /**
972 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
973 * this is used to workaround some encoder bugs
974 * - encoding: set by user, if not then the default based on codec_id will be used
975 * - decoding: set by user, will be converted to upper case by lavc during init
976 */
977 unsigned int codec_tag;
978
979 /**
980 * workaround bugs in encoders which sometimes cannot be detected automatically.
981 * - encoding: set by user
982 * - decoding: set by user
983 */
984 int workaround_bugs;
985 #define FF_BUG_AUTODETECT 1 ///< autodetection
986 #define FF_BUG_OLD_MSMPEG4 2
987 #define FF_BUG_XVID_ILACE 4
988 #define FF_BUG_UMP4 8
989 #define FF_BUG_NO_PADDING 16
990 #define FF_BUG_AMV 32
991 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
992 #define FF_BUG_QPEL_CHROMA 64
993 #define FF_BUG_STD_QPEL 128
994 #define FF_BUG_QPEL_CHROMA2 256
995 #define FF_BUG_DIRECT_BLOCKSIZE 512
996 #define FF_BUG_EDGE 1024
997 #define FF_BUG_HPEL_CHROMA 2048
998 #define FF_BUG_DC_CLIP 4096
999 #define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
1000 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
1001
1002 /**
1003 * luma single coeff elimination threshold.
1004 * - encoding: set by user
1005 * - decoding: unused
1006 */
1007 int luma_elim_threshold;
1008
1009 /**
1010 * chroma single coeff elimination threshold.
1011 * - encoding: set by user
1012 * - decoding: unused
1013 */
1014 int chroma_elim_threshold;
1015
1016 /**
1017 * strictly follow the std (MPEG4, ...).
1018 * - encoding: set by user
1019 * - decoding: unused
1020 */
1021 int strict_std_compliance;
1022 #define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
1023 #define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
1024 #define FF_COMPLIANCE_NORMAL 0
1025 #define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
1026 #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
1027
1028 /**
1029 * qscale offset between ip and b frames.
1030 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1031 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1032 * - encoding: set by user.
1033 * - decoding: unused
1034 */
1035 float b_quant_offset;
1036
1037 /**
1038 * error resilience higher values will detect more errors but may missdetect
1039 * some more or less valid parts as errors.
1040 * - encoding: unused
1041 * - decoding: set by user
1042 */
1043 int error_resilience;
1044 #define FF_ER_CAREFUL 1
1045 #define FF_ER_COMPLIANT 2
1046 #define FF_ER_AGGRESSIVE 3
1047 #define FF_ER_VERY_AGGRESSIVE 4
1048
1049 /**
1050 * called at the beginning of each frame to get a buffer for it.
1051 * if pic.reference is set then the frame will be read later by lavc
1052 * avcodec_align_dimensions() should be used to find the required width and
1053 * height, as they normally need to be rounded up to the next multiple of 16
1054 * - encoding: unused
1055 * - decoding: set by lavc, user can override
1056 */
1057 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1058
1059 /**
1060 * called to release buffers which where allocated with get_buffer.
1061 * a released buffer can be reused in get_buffer()
1062 * pic.data[*] must be set to NULL
1063 * - encoding: unused
1064 * - decoding: set by lavc, user can override
1065 */
1066 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1067
1068 /**
1069 * if 1 the stream has a 1 frame delay during decoding.
1070 * - encoding: set by lavc
1071 * - decoding: set by lavc
1072 */
1073 int has_b_frames;
1074
1075 /**
1076 * number of bytes per packet if constant and known or 0
1077 * used by some WAV based audio codecs
1078 */
1079 int block_align;
1080
1081 int parse_only; /* - decoding only: if true, only parsing is done
1082 (function avcodec_parse_frame()). The frame
1083 data is returned. Only MPEG codecs support this now. */
1084
1085 /**
1086 * 0-> h263 quant 1-> mpeg quant.
1087 * - encoding: set by user.
1088 * - decoding: unused
1089 */
1090 int mpeg_quant;
1091
1092 /**
1093 * pass1 encoding statistics output buffer.
1094 * - encoding: set by lavc
1095 * - decoding: unused
1096 */
1097 char *stats_out;
1098
1099 /**
1100 * pass2 encoding statistics input buffer.
1101 * concatenated stuff from stats_out of pass1 should be placed here
1102 * - encoding: allocated/set/freed by user
1103 * - decoding: unused
1104 */
1105 char *stats_in;
1106
1107 /**
1108 * ratecontrol qmin qmax limiting method.
1109 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1110 * - encoding: set by user.
1111 * - decoding: unused
1112 */
1113 float rc_qsquish;
1114
1115 float rc_qmod_amp;
1116 int rc_qmod_freq;
1117
1118 /**
1119 * ratecontrol override, see RcOverride.
1120 * - encoding: allocated/set/freed by user.
1121 * - decoding: unused
1122 */
1123 RcOverride *rc_override;
1124 int rc_override_count;
1125
1126 /**
1127 * rate control equation.
1128 * - encoding: set by user
1129 * - decoding: unused
1130 */
1131 char *rc_eq;
1132
1133 /**
1134 * maximum bitrate.
1135 * - encoding: set by user.
1136 * - decoding: unused
1137 */
1138 int rc_max_rate;
1139
1140 /**
1141 * minimum bitrate.
1142 * - encoding: set by user.
1143 * - decoding: unused
1144 */
1145 int rc_min_rate;
1146
1147 /**
1148 * decoder bitstream buffer size.
1149 * - encoding: set by user.
1150 * - decoding: unused
1151 */
1152 int rc_buffer_size;
1153 float rc_buffer_aggressivity;
1154
1155 /**
1156 * qscale factor between p and i frames.
1157 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1158 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1159 * - encoding: set by user.
1160 * - decoding: unused
1161 */
1162 float i_quant_factor;
1163
1164 /**
1165 * qscale offset between p and i frames.
1166 * - encoding: set by user.
1167 * - decoding: unused
1168 */
1169 float i_quant_offset;
1170
1171 /**
1172 * initial complexity for pass1 ratecontrol.
1173 * - encoding: set by user.
1174 * - decoding: unused
1175 */
1176 float rc_initial_cplx;
1177
1178 /**
1179 * dct algorithm, see FF_DCT_* below.
1180 * - encoding: set by user
1181 * - decoding: unused
1182 */
1183 int dct_algo;
1184 #define FF_DCT_AUTO 0
1185 #define FF_DCT_FASTINT 1
1186 #define FF_DCT_INT 2
1187 #define FF_DCT_MMX 3
1188 #define FF_DCT_MLIB 4
1189 #define FF_DCT_ALTIVEC 5
1190 #define FF_DCT_FAAN 6
1191
1192 /**
1193 * luminance masking (0-> disabled).
1194 * - encoding: set by user
1195 * - decoding: unused
1196 */
1197 float lumi_masking;
1198
1199 /**
1200 * temporary complexity masking (0-> disabled).
1201 * - encoding: set by user
1202 * - decoding: unused
1203 */
1204 float temporal_cplx_masking;
1205
1206 /**
1207 * spatial complexity masking (0-> disabled).
1208 * - encoding: set by user
1209 * - decoding: unused
1210 */
1211 float spatial_cplx_masking;
1212
1213 /**
1214 * p block masking (0-> disabled).
1215 * - encoding: set by user
1216 * - decoding: unused
1217 */
1218 float p_masking;
1219
1220 /**
1221 * darkness masking (0-> disabled).
1222 * - encoding: set by user
1223 * - decoding: unused
1224 */
1225 float dark_masking;
1226
1227
1228 /* for binary compatibility */
1229 int unused;
1230
1231 /**
1232 * idct algorithm, see FF_IDCT_* below.
1233 * - encoding: set by user
1234 * - decoding: set by user
1235 */
1236 int idct_algo;
1237 #define FF_IDCT_AUTO 0
1238 #define FF_IDCT_INT 1
1239 #define FF_IDCT_SIMPLE 2
1240 #define FF_IDCT_SIMPLEMMX 3
1241 #define FF_IDCT_LIBMPEG2MMX 4
1242 #define FF_IDCT_PS2 5
1243 #define FF_IDCT_MLIB 6
1244 #define FF_IDCT_ARM 7
1245 #define FF_IDCT_ALTIVEC 8
1246 #define FF_IDCT_SH4 9
1247 #define FF_IDCT_SIMPLEARM 10
1248 #define FF_IDCT_H264 11
1249 #define FF_IDCT_VP3 12
1250 #define FF_IDCT_IPP 13
1251 #define FF_IDCT_XVIDMMX 14
1252
1253 /**
1254 * slice count.
1255 * - encoding: set by lavc
1256 * - decoding: set by user (or 0)
1257 */
1258 int slice_count;
1259 /**
1260 * slice offsets in the frame in bytes.
1261 * - encoding: set/allocated by lavc
1262 * - decoding: set/allocated by user (or NULL)
1263 */
1264 int *slice_offset;
1265
1266 /**
1267 * error concealment flags.
1268 * - encoding: unused
1269 * - decoding: set by user
1270 */
1271 int error_concealment;
1272 #define FF_EC_GUESS_MVS 1
1273 #define FF_EC_DEBLOCK 2
1274
1275 /**
1276 * dsp_mask could be add used to disable unwanted CPU features
1277 * CPU features (i.e. MMX, SSE. ...)
1278 *
1279 * with FORCE flag you may instead enable given CPU features
1280 * (Dangerous: usable in case of misdetection, improper usage however will
1281 * result into program crash)
1282 */
1283 unsigned dsp_mask;
1284 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1285 /* lower 16 bits - CPU features */
1286 #ifdef HAVE_MMX
1287 #define FF_MM_MMX 0x0001 /* standard MMX */
1288 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1289 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1290 #define FF_MM_SSE 0x0008 /* SSE functions */
1291 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1292 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1293 #endif /* HAVE_MMX */
1294 #ifdef HAVE_IWMMXT
1295 #define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
1296 #endif /* HAVE_IWMMXT */
1297
1298 /**
1299 * bits per sample/pixel from the demuxer (needed for huffyuv).
1300 * - encoding: set by lavc
1301 * - decoding: set by user
1302 */
1303 int bits_per_sample;
1304
1305 /**
1306 * prediction method (needed for huffyuv).
1307 * - encoding: set by user
1308 * - decoding: unused
1309 */
1310 int prediction_method;
1311 #define FF_PRED_LEFT 0
1312 #define FF_PRED_PLANE 1
1313 #define FF_PRED_MEDIAN 2
1314
1315 /**
1316 * sample aspect ratio (0 if unknown).
1317 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1318 * - encoding: set by user.
1319 * - decoding: set by lavc.
1320 */
1321 AVRational sample_aspect_ratio;
1322
1323 /**
1324 * the picture in the bitstream.
1325 * - encoding: set by lavc
1326 * - decoding: set by lavc
1327 */
1328 AVFrame *coded_frame;
1329
1330 /**
1331 * debug.
1332 * - encoding: set by user.
1333 * - decoding: set by user.
1334 */
1335 int debug;
1336 #define FF_DEBUG_PICT_INFO 1
1337 #define FF_DEBUG_RC 2
1338 #define FF_DEBUG_BITSTREAM 4
1339 #define FF_DEBUG_MB_TYPE 8
1340 #define FF_DEBUG_QP 16
1341 #define FF_DEBUG_MV 32
1342 #define FF_DEBUG_DCT_COEFF 0x00000040
1343 #define FF_DEBUG_SKIP 0x00000080
1344 #define FF_DEBUG_STARTCODE 0x00000100
1345 #define FF_DEBUG_PTS 0x00000200
1346 #define FF_DEBUG_ER 0x00000400
1347 #define FF_DEBUG_MMCO 0x00000800
1348 #define FF_DEBUG_BUGS 0x00001000
1349 #define FF_DEBUG_VIS_QP 0x00002000
1350 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1351
1352 /**
1353 * debug.
1354 * - encoding: set by user.
1355 * - decoding: set by user.
1356 */
1357 int debug_mv;
1358 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1359 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1360 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1361
1362 /**
1363 * error.
1364 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1365 * - decoding: unused
1366 */
1367 uint64_t error[4];
1368
1369 /**
1370 * minimum MB quantizer.
1371 * - encoding: unused
1372 * - decoding: unused
1373 */
1374 int mb_qmin;
1375
1376 /**
1377 * maximum MB quantizer.
1378 * - encoding: unused
1379 * - decoding: unused
1380 */
1381 int mb_qmax;
1382
1383 /**
1384 * motion estimation compare function.
1385 * - encoding: set by user.
1386 * - decoding: unused
1387 */
1388 int me_cmp;
1389 /**
1390 * subpixel motion estimation compare function.
1391 * - encoding: set by user.
1392 * - decoding: unused
1393 */
1394 int me_sub_cmp;
1395 /**
1396 * macroblock compare function (not supported yet).
1397 * - encoding: set by user.
1398 * - decoding: unused
1399 */
1400 int mb_cmp;
1401 /**
1402 * interlaced dct compare function
1403 * - encoding: set by user.
1404 * - decoding: unused
1405 */
1406 int ildct_cmp;
1407 #define FF_CMP_SAD 0
1408 #define FF_CMP_SSE 1
1409 #define FF_CMP_SATD 2
1410 #define FF_CMP_DCT 3
1411 #define FF_CMP_PSNR 4
1412 #define FF_CMP_BIT 5
1413 #define FF_CMP_RD 6
1414 #define FF_CMP_ZERO 7
1415 #define FF_CMP_VSAD 8
1416 #define FF_CMP_VSSE 9
1417 #define FF_CMP_NSSE 10
1418 #define FF_CMP_W53 11
1419 #define FF_CMP_W97 12
1420 #define FF_CMP_DCTMAX 13
1421 #define FF_CMP_DCT264 14
1422 #define FF_CMP_CHROMA 256
1423
1424 /**
1425 * ME diamond size & shape.
1426 * - encoding: set by user.
1427 * - decoding: unused
1428 */
1429 int dia_size;
1430
1431 /**
1432 * amount of previous MV predictors (2a+1 x 2a+1 square).
1433 * - encoding: set by user.
1434 * - decoding: unused
1435 */
1436 int last_predictor_count;
1437
1438 /**
1439 * pre pass for motion estimation.
1440 * - encoding: set by user.
1441 * - decoding: unused
1442 */
1443 int pre_me;
1444
1445 /**
1446 * motion estimation pre pass compare function.
1447 * - encoding: set by user.
1448 * - decoding: unused
1449 */
1450 int me_pre_cmp;
1451
1452 /**
1453 * ME pre pass diamond size & shape.
1454 * - encoding: set by user.
1455 * - decoding: unused
1456 */
1457 int pre_dia_size;
1458
1459 /**
1460 * subpel ME quality.
1461 * - encoding: set by user.
1462 * - decoding: unused
1463 */
1464 int me_subpel_quality;
1465
1466 /**
1467 * callback to negotiate the pixelFormat.
1468 * @param fmt is the list of formats which are supported by the codec,
1469 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1470 * the first is allways the native one
1471 * @return the choosen format
1472 * - encoding: unused
1473 * - decoding: set by user, if not set then the native format will always be choosen
1474 */
1475 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1476
1477 /**
1478 * DTG active format information (additionnal aspect ratio
1479 * information only used in DVB MPEG2 transport streams). 0 if
1480 * not set.
1481 *
1482 * - encoding: unused.
1483 * - decoding: set by decoder
1484 */
1485 int dtg_active_format;
1486 #define FF_DTG_AFD_SAME 8
1487 #define FF_DTG_AFD_4_3 9
1488 #define FF_DTG_AFD_16_9 10
1489 #define FF_DTG_AFD_14_9 11
1490 #define FF_DTG_AFD_4_3_SP_14_9 13
1491 #define FF_DTG_AFD_16_9_SP_14_9 14
1492 #define FF_DTG_AFD_SP_4_3 15
1493
1494 /**
1495 * Maximum motion estimation search range in subpel units.
1496 * if 0 then no limit
1497 *
1498 * - encoding: set by user.
1499 * - decoding: unused.
1500 */
1501 int me_range;
1502
1503 /**
1504 * intra quantizer bias.
1505 * - encoding: set by user.
1506 * - decoding: unused
1507 */
1508 int intra_quant_bias;
1509 #define FF_DEFAULT_QUANT_BIAS 999999
1510
1511 /**
1512 * inter quantizer bias.
1513 * - encoding: set by user.
1514 * - decoding: unused
1515 */
1516 int inter_quant_bias;
1517
1518 /**
1519 * color table ID.
1520 * - encoding: unused.
1521 * - decoding: which clrtable should be used for 8bit RGB images
1522 * table have to be stored somewhere FIXME
1523 */
1524 int color_table_id;
1525
1526 /**
1527 * internal_buffer count.
1528 * Don't touch, used by lavc default_get_buffer()
1529 */
1530 int internal_buffer_count;
1531
1532 /**
1533 * internal_buffers.
1534 * Don't touch, used by lavc default_get_buffer()
1535 */
1536 void *internal_buffer;
1537
1538 #define FF_LAMBDA_SHIFT 7
1539 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1540 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1541 #define FF_LAMBDA_MAX (256*128-1)
1542
1543 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1544 /**
1545 * global quality for codecs which cannot change it per frame.
1546 * this should be proportional to MPEG1/2/4 qscale.
1547 * - encoding: set by user.
1548 * - decoding: unused
1549 */
1550 int global_quality;
1551
1552 #define FF_CODER_TYPE_VLC 0
1553 #define FF_CODER_TYPE_AC 1
1554 /**
1555 * coder type
1556 * - encoding: set by user.
1557 * - decoding: unused
1558 */
1559 int coder_type;
1560
1561 /**
1562 * context model
1563 * - encoding: set by user.
1564 * - decoding: unused
1565 */
1566 int context_model;
1567 #if 0
1568 /**
1569 *
1570 * - encoding: unused
1571 * - decoding: set by user.
1572 */
1573 uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1574 #endif
1575
1576 /**
1577 * slice flags
1578 * - encoding: unused
1579 * - decoding: set by user.
1580 */
1581 int slice_flags;
1582 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1583 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1584 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1585
1586 /**
1587 * XVideo Motion Acceleration
1588 * - encoding: forbidden
1589 * - decoding: set by decoder
1590 */
1591 int xvmc_acceleration;
1592
1593 /**
1594 * macroblock decision mode
1595 * - encoding: set by user.
1596 * - decoding: unused
1597 */
1598 int mb_decision;
1599 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1600 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1601 #define FF_MB_DECISION_RD 2 ///< rate distoration
1602
1603 /**
1604 * custom intra quantization matrix
1605 * - encoding: set by user, can be NULL
1606 * - decoding: set by lavc
1607 */
1608 uint16_t *intra_matrix;
1609
1610 /**
1611 * custom inter quantization matrix
1612 * - encoding: set by user, can be NULL
1613 * - decoding: set by lavc
1614 */
1615 uint16_t *inter_matrix;
1616
1617 /**
1618 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1619 * this is used to workaround some encoder bugs
1620 * - encoding: unused
1621 * - decoding: set by user, will be converted to upper case by lavc during init
1622 */
1623 unsigned int stream_codec_tag;
1624
1625 /**
1626 * scene change detection threshold.
1627 * 0 is default, larger means fewer detected scene changes
1628 * - encoding: set by user.
1629 * - decoding: unused
1630 */
1631 int scenechange_threshold;
1632
1633 /**
1634 * minimum lagrange multipler
1635 * - encoding: set by user.
1636 * - decoding: unused
1637 */
1638 int lmin;
1639
1640 /**
1641 * maximum lagrange multipler
1642 * - encoding: set by user.
1643 * - decoding: unused
1644 */
1645 int lmax;
1646
1647 /**
1648 * Palette control structure
1649 * - encoding: ??? (no palette-enabled encoder yet)
1650 * - decoding: set by user.
1651 */
1652 struct AVPaletteControl *palctrl;
1653
1654 /**
1655 * noise reduction strength
1656 * - encoding: set by user.
1657 * - decoding: unused
1658 */
1659 int noise_reduction;
1660
1661 /**
1662 * called at the beginning of a frame to get cr buffer for it.
1663 * buffer type (size, hints) must be the same. lavc won't check it.
1664 * lavc will pass previous buffer in pic, function should return
1665 * same buffer or new buffer with old frame "painted" into it.
1666 * if pic.data[0] == NULL must behave like get_buffer().
1667 * - encoding: unused
1668 * - decoding: set by lavc, user can override
1669 */
1670 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1671
1672 /**
1673 * number of bits which should be loaded into the rc buffer before decoding starts
1674 * - encoding: set by user.
1675 * - decoding: unused
1676 */
1677 int rc_initial_buffer_occupancy;
1678
1679 /**
1680 *
1681 * - encoding: set by user.
1682 * - decoding: unused
1683 */
1684 int inter_threshold;
1685
1686 /**
1687 * CODEC_FLAG2_*.
1688 * - encoding: set by user.
1689 * - decoding: set by user.
1690 */
1691 int flags2;
1692
1693 /**
1694 * simulates errors in the bitstream to test error concealment.
1695 * - encoding: set by user.
1696 * - decoding: unused.
1697 */
1698 int error_rate;
1699
1700 /**
1701 * MP3 antialias algorithm, see FF_AA_* below.
1702 * - encoding: unused
1703 * - decoding: set by user
1704 */
1705 int antialias_algo;
1706 #define FF_AA_AUTO 0
1707 #define FF_AA_FASTINT 1 //not implemented yet
1708 #define FF_AA_INT 2
1709 #define FF_AA_FLOAT 3
1710 /**
1711 * Quantizer noise shaping.
1712 * - encoding: set by user
1713 * - decoding: unused
1714 */
1715 int quantizer_noise_shaping;
1716
1717 /**
1718 * Thread count.
1719 * is used to decide how many independant tasks should be passed to execute()
1720 * - encoding: set by user
1721 * - decoding: set by user
1722 */
1723 int thread_count;
1724
1725 /**
1726 * the codec may call this to execute several independant things. it will return only after
1727 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1728 * default implementation will execute the parts serially
1729 * @param count the number of things to execute
1730 * - encoding: set by lavc, user can override
1731 * - decoding: set by lavc, user can override
1732 */
1733 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1734
1735 /**
1736 * Thread opaque.
1737 * can be used by execute() to store some per AVCodecContext stuff.
1738 * - encoding: set by execute()
1739 * - decoding: set by execute()
1740 */
1741 void *thread_opaque;
1742
1743 /**
1744 * Motion estimation threshold. under which no motion estimation is
1745 * performed, but instead the user specified motion vectors are used
1746 *
1747 * - encoding: set by user
1748 * - decoding: unused
1749 */
1750 int me_threshold;
1751
1752 /**
1753 * Macroblock threshold. under which the user specified macroblock types will be used
1754 * - encoding: set by user
1755 * - decoding: unused
1756 */
1757 int mb_threshold;
1758
1759 /**
1760 * precision of the intra dc coefficient - 8.
1761 * - encoding: set by user
1762 * - decoding: unused
1763 */
1764 int intra_dc_precision;
1765
1766 /**
1767 * noise vs. sse weight for the nsse comparsion function.
1768 * - encoding: set by user
1769 * - decoding: unused
1770 */
1771 int nsse_weight;
1772
1773 /**
1774 * number of macroblock rows at the top which are skipped.
1775 * - encoding: unused
1776 * - decoding: set by user
1777 */
1778 int skip_top;
1779
1780 /**
1781 * number of macroblock rows at the bottom which are skipped.
1782 * - encoding: unused
1783 * - decoding: set by user
1784 */
1785 int skip_bottom;
1786
1787 /**
1788 * profile
1789 * - encoding: set by user
1790 * - decoding: set by lavc
1791 */
1792 int profile;
1793 #define FF_PROFILE_UNKNOWN -99
1794
1795 /**
1796 * level
1797 * - encoding: set by user
1798 * - decoding: set by lavc
1799 */
1800 int level;
1801 #define FF_LEVEL_UNKNOWN -99
1802
1803 /**
1804 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1805 * - encoding: unused
1806 * - decoding: set by user
1807 */
1808 int lowres;
1809
1810 /**
1811 * bitsream width / height. may be different from width/height if lowres
1812 * or other things are used
1813 * - encoding: unused
1814 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1815 */
1816 int coded_width, coded_height;
1817
1818 /**
1819 * frame skip threshold
1820 * - encoding: set by user
1821 * - decoding: unused
1822 */
1823 int frame_skip_threshold;
1824
1825 /**
1826 * frame skip factor
1827 * - encoding: set by user
1828 * - decoding: unused
1829 */
1830 int frame_skip_factor;
1831
1832 /**
1833 * frame skip exponent
1834 * - encoding: set by user
1835 * - decoding: unused
1836 */
1837 int frame_skip_exp;
1838
1839 /**
1840 * frame skip comparission function
1841 * - encoding: set by user.
1842 * - decoding: unused
1843 */
1844 int frame_skip_cmp;
1845
1846 /**
1847 * border processing masking. raises the quantizer for mbs on the borders
1848 * of the picture.
1849 * - encoding: set by user
1850 * - decoding: unused
1851 */
1852 float border_masking;
1853
1854 /**
1855 * minimum MB lagrange multipler.
1856 * - encoding: set by user.
1857 * - decoding: unused
1858 */
1859 int mb_lmin;
1860
1861 /**
1862 * maximum MB lagrange multipler.
1863 * - encoding: set by user.
1864 * - decoding: unused
1865 */
1866 int mb_lmax;
1867
1868 /**
1869 *
1870 * - encoding: set by user.
1871 * - decoding: unused
1872 */
1873 int me_penalty_compensation;
1874
1875 /**
1876 *
1877 * - encoding: unused
1878 * - decoding: set by user.
1879 */
1880 enum AVDiscard skip_loop_filter;
1881
1882 /**
1883 *
1884 * - encoding: unused
1885 * - decoding: set by user.
1886 */
1887 enum AVDiscard skip_idct;
1888
1889 /**
1890 *
1891 * - encoding: unused
1892 * - decoding: set by user.
1893 */
1894 enum AVDiscard skip_frame;
1895
1896 /**
1897 *
1898 * - encoding: set by user.
1899 * - decoding: unused
1900 */
1901 int bidir_refine;
1902
1903 /**
1904 *
1905 * - encoding: set by user.
1906 * - decoding: unused
1907 */
1908 int brd_scale;
1909
1910 /**
1911 * constant rate factor - quality-based VBR - values ~correspond to qps
1912 * - encoding: set by user.
1913 * - decoding: unused
1914 */
1915 int crf;
1916
1917 /**
1918 * constant quantization parameter rate control method
1919 * - encoding: set by user.
1920 * - decoding: unused
1921 */
1922 int cqp;
1923
1924 /**
1925 * minimum gop size
1926 * - encoding: set by user.
1927 * - decoding: unused
1928 */
1929 int keyint_min;
1930
1931 /**
1932 * number of reference frames
1933 * - encoding: set by user.
1934 * - decoding: unused
1935 */
1936 int refs;
1937
1938 /**
1939 * chroma qp offset from luma
1940 * - encoding: set by user.
1941 * - decoding: unused
1942 */
1943 int chromaoffset;
1944
1945 /**
1946 * influences how often b-frames are used
1947 * - encoding: set by user.
1948 * - decoding: unused
1949 */
1950 int bframebias;
1951
1952 /**
1953 * trellis RD quantization
1954 * - encoding: set by user.
1955 * - decoding: unused
1956 */
1957 int trellis;
1958
1959 /**
1960 * reduce fluctuations in qp (before curve compression)
1961 * - encoding: set by user.
1962 * - decoding: unused
1963 */
1964 float complexityblur;
1965
1966 /**
1967 * in-loop deblocking filter alphac0 parameter
1968 * alpha is in the range -6...6
1969 * - encoding: set by user.
1970 * - decoding: unused
1971 */
1972 int deblockalpha;
1973
1974 /**
1975 * in-loop deblocking filter beta parameter
1976 * beta is in the range -6...6
1977 * - encoding: set by user.
1978 * - decoding: unused
1979 */
1980 int deblockbeta;
1981
1982 /**
1983 * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1984 * - encoding: set by user.
1985 * - decoding: unused
1986 */
1987 int partitions;
1988 #define X264_PART_I4X4 0x001 /* Analyse i4x4 */
1989 #define X264_PART_I8X8 0x002 /* Analyse i8x8 (requires 8x8 transform) */
1990 #define X264_PART_P8X8 0x010 /* Analyse p16x8, p8x16 and p8x8 */
1991 #define X264_PART_P4X4 0x020 /* Analyse p8x4, p4x8, p4x4 */
1992 #define X264_PART_B8X8 0x100 /* Analyse b16x8, b8x16 and b8x8 */
1993
1994 /**
1995 * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1996 * - encoding: set by user.
1997 * - decoding: unused
1998 */
1999 int directpred;
2000
2001 /**
2002 * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
2003 * - encoding: set by user.
2004 * - decoding: unused
2005 */
2006 int cutoff;
2007
2008 /**
2009 * multiplied by qscale for each frame and added to scene_change_score
2010 * - encoding: set by user.
2011 * - decoding: unused
2012 */
2013 int scenechange_factor;
2014 } AVCodecContext;
2015
2016 /**
2017 * AVCodec.
2018 */
2019 typedef struct AVCodec {
2020 const char *name;
2021 enum CodecType type;
2022 enum CodecID id;
2023 int priv_data_size;
2024 int (*init)(AVCodecContext *);
2025 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2026 int (*close)(AVCodecContext *);
2027 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2028 uint8_t *buf, int buf_size);
2029 int capabilities;
2030 #if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
2031 void *dummy; // FIXME remove next time we break binary compatibility
2032 #endif
2033 struct AVCodec *next;
2034 void (*flush)(AVCodecContext *);
2035 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2036 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2037 } AVCodec;
2038
2039 /**
2040 * four components are given, that's all.
2041 * the last component is alpha
2042 */
2043 typedef struct AVPicture {
2044 uint8_t *data[4];
2045 int linesize[4]; ///< number of bytes per line
2046 } AVPicture;
2047
2048 /**
2049 * AVPaletteControl
2050 * This structure defines a method for communicating palette changes
2051 * between and demuxer and a decoder.
2052 */
2053 #define AVPALETTE_SIZE 1024
2054 #define AVPALETTE_COUNT 256
2055 typedef struct AVPaletteControl {
2056
2057 /* demuxer sets this to 1 to indicate the palette has changed;
2058 * decoder resets to 0 */
2059 int palette_changed;
2060
2061 /* 4-byte ARGB palette entries, stored in native byte order; note that
2062 * the individual palette components should be on a 8-bit scale; if
2063 * the palette data comes from a IBM VGA native format, the component
2064 * data is probably 6 bits in size and needs to be scaled */
2065 unsigned int palette[AVPALETTE_COUNT];
2066
2067 } AVPaletteControl;
2068
2069 typedef struct AVSubtitleRect {
2070 uint16_t x;
2071 uint16_t y;
2072 uint16_t w;
2073 uint16_t h;
2074 uint16_t nb_colors;
2075 int linesize;
2076 uint32_t *rgba_palette;
2077 uint8_t *bitmap;
2078 } AVSubtitleRect;
2079
2080 typedef struct AVSubtitle {
2081 uint16_t format; /* 0 = graphics */
2082 uint32_t start_display_time; /* relative to packet pts, in ms */
2083 uint32_t end_display_time; /* relative to packet pts, in ms */
2084 uint32_t num_rects;
2085 AVSubtitleRect *rects;
2086 } AVSubtitle;
2087
2088 extern AVCodec ac3_encoder;
2089 extern AVCodec mp2_encoder;
2090 extern AVCodec mp3lame_encoder;
2091 extern AVCodec oggvorbis_encoder;
2092 extern AVCodec oggtheora_encoder;
2093 extern AVCodec faac_encoder;
2094 extern AVCodec xvid_encoder;
2095 extern AVCodec mpeg1video_encoder;
2096 extern AVCodec mpeg2video_encoder;
2097 extern AVCodec h261_encoder;
2098 extern AVCodec h263_encoder;
2099 extern AVCodec h263p_encoder;
2100 extern AVCodec flv_encoder;
2101 extern AVCodec rv10_encoder;
2102 extern AVCodec rv20_encoder;
2103 extern AVCodec dvvideo_encoder;
2104 extern AVCodec mjpeg_encoder;
2105 extern AVCodec ljpeg_encoder;
2106 extern AVCodec jpegls_encoder;
2107 extern AVCodec png_encoder;
2108 extern AVCodec ppm_encoder;
2109 extern AVCodec pgm_encoder;
2110 extern AVCodec pgmyuv_encoder;
2111 extern AVCodec pbm_encoder;
2112 extern AVCodec pam_encoder;
2113 extern AVCodec mpeg4_encoder;
2114 extern AVCodec msmpeg4v1_encoder;
2115 extern AVCodec msmpeg4v2_encoder;
2116 extern AVCodec msmpeg4v3_encoder;
2117 extern AVCodec wmv1_encoder;
2118 extern AVCodec wmv2_encoder;
2119 extern AVCodec huffyuv_encoder;
2120 extern AVCodec ffvhuff_encoder;
2121 extern AVCodec h264_encoder;
2122 extern AVCodec asv1_encoder;
2123 extern AVCodec asv2_encoder;
2124 extern AVCodec vcr1_encoder;
2125 extern AVCodec ffv1_encoder;
2126 extern AVCodec snow_encoder;
2127 extern AVCodec mdec_encoder;
2128 extern AVCodec zlib_encoder;
2129 extern AVCodec sonic_encoder;
2130 extern AVCodec sonic_ls_encoder;
2131 extern AVCodec svq1_encoder;
2132 extern AVCodec x264_encoder;
2133
2134 extern AVCodec h263_decoder;
2135 extern AVCodec h261_decoder;
2136 extern AVCodec mpeg4_decoder;
2137 extern AVCodec msmpeg4v1_decoder;
2138 extern AVCodec msmpeg4v2_decoder;
2139 extern AVCodec msmpeg4v3_decoder;
2140 extern AVCodec wmv1_decoder;
2141 extern AVCodec wmv2_decoder;
2142 extern AVCodec vc9_decoder;
2143 extern AVCodec wmv3_decoder;
2144 extern AVCodec mpeg1video_decoder;
2145 extern AVCodec mpeg2video_decoder;
2146 extern AVCodec mpegvideo_decoder;
2147 extern AVCodec mpeg_xvmc_decoder;
2148 extern AVCodec h263i_decoder;
2149 extern AVCodec flv_decoder;
2150 extern AVCodec rv10_decoder;
2151 extern AVCodec rv20_decoder;
2152 extern AVCodec rv30_decoder;
2153 extern AVCodec rv40_decoder;
2154 extern AVCodec svq1_decoder;
2155 extern AVCodec svq3_decoder;
2156 extern AVCodec dvvideo_decoder;
2157 extern AVCodec wmav1_decoder;
2158 extern AVCodec wmav2_decoder;
2159 extern AVCodec mjpeg_decoder;
2160 extern AVCodec mjpegb_decoder;
2161 extern AVCodec sp5x_decoder;
2162 extern AVCodec png_decoder;
2163 extern AVCodec mp2_decoder;
2164 extern AVCodec mp3_decoder;
2165 extern AVCodec mp3adu_decoder;
2166 extern AVCodec mp3on4_decoder;
2167 extern AVCodec qdm2_decoder;
2168 extern AVCodec cook_decoder;
2169 extern AVCodec truespeech_decoder;
2170 extern AVCodec tta_decoder;
2171 extern AVCodec mace3_decoder;
2172 extern AVCodec mace6_decoder;
2173 extern AVCodec huffyuv_decoder;
2174 extern AVCodec ffvhuff_decoder;
2175 extern AVCodec oggvorbis_decoder;
2176 extern AVCodec oggtheora_decoder;
2177 extern AVCodec cyuv_decoder;
2178 extern AVCodec h264_decoder;
2179 extern AVCodec indeo3_decoder;
2180 extern AVCodec vp3_decoder;
2181 extern AVCodec theora_decoder;
2182 extern AVCodec amr_nb_decoder;
2183 extern AVCodec amr_nb_encoder;
2184 extern AVCodec amr_wb_encoder;
2185 extern AVCodec amr_wb_decoder;
2186 extern AVCodec aac_decoder;
2187 extern AVCodec mpeg4aac_decoder;
2188 extern AVCodec asv1_decoder;
2189 extern AVCodec asv2_decoder;
2190 extern AVCodec vcr1_decoder;
2191 extern AVCodec cljr_decoder;
2192 extern AVCodec ffv1_decoder;
2193 extern AVCodec snow_decoder;
2194 extern AVCodec fourxm_decoder;
2195 extern AVCodec mdec_decoder;
2196 extern AVCodec roq_decoder;
2197 extern AVCodec interplay_video_decoder;
2198 extern AVCodec xan_wc3_decoder;
2199 extern AVCodec rpza_decoder;
2200 extern AVCodec cinepak_decoder;
2201 extern AVCodec msrle_decoder;
2202 extern AVCodec msvideo1_decoder;
2203 extern AVCodec vqa_decoder;
2204 extern AVCodec idcin_decoder;
2205 extern AVCodec eightbps_decoder;
2206 extern AVCodec smc_decoder;
2207 extern AVCodec flic_decoder;
2208 extern AVCodec vmdvideo_decoder;
2209 extern AVCodec vmdaudio_decoder;
2210 extern AVCodec truemotion1_decoder;
2211 extern AVCodec truemotion2_decoder;
2212 extern AVCodec mszh_decoder;
2213 extern AVCodec zlib_decoder;
2214 extern AVCodec ra_144_decoder;
2215 extern AVCodec ra_288_decoder;
2216 extern AVCodec roq_dpcm_decoder;
2217 extern AVCodec interplay_dpcm_decoder;
2218 extern AVCodec xan_dpcm_decoder;
2219 extern AVCodec sol_dpcm_decoder;
2220 extern AVCodec sonic_decoder;
2221 extern AVCodec qtrle_decoder;
2222 extern AVCodec flac_decoder;
2223 extern AVCodec tscc_decoder;
2224 extern AVCodec cscd_decoder;
2225 extern AVCodec nuv_decoder;
2226 extern AVCodec ulti_decoder;
2227 extern AVCodec qdraw_decoder;
2228 extern AVCodec xl_decoder;
2229 extern AVCodec qpeg_decoder;
2230 extern AVCodec shorten_decoder;
2231 extern AVCodec loco_decoder;
2232 extern AVCodec wnv1_decoder;
2233 extern AVCodec aasc_decoder;
2234 extern AVCodec alac_decoder;
2235 extern AVCodec ws_snd1_decoder;
2236 extern AVCodec indeo2_decoder;
2237 extern AVCodec vorbis_decoder;
2238 extern AVCodec fraps_decoder;
2239 extern AVCodec libgsm_encoder;
2240 extern AVCodec libgsm_decoder;
2241 extern AVCodec bmp_decoder;
2242 extern AVCodec mmvideo_decoder;
2243 extern AVCodec zmbv_decoder;
2244 extern AVCodec avs_decoder;
2245 extern AVCodec smacker_decoder;
2246 extern AVCodec smackaud_decoder;
2247
2248 /* pcm codecs */
2249 #define PCM_CODEC(id, name) \
2250 extern AVCodec name ## _decoder; \
2251 extern AVCodec name ## _encoder
2252
2253 PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2254 PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2255 PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2256 PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2257 PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2258 PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2259 PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2260 PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2261 PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2262 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2263 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2264 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2265 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2266 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2267 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2268 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2269 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2270
2271 /* adpcm codecs */
2272
2273 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2274 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2275 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2276 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2277 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2278 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2279 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2280 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2281 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2282 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2283 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2284 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2285 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2286 PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2287 PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2288 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2289 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2290 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2291
2292 #undef PCM_CODEC
2293
2294 /* dummy raw video codec */
2295 extern AVCodec rawvideo_encoder;
2296 extern AVCodec rawvideo_decoder;
2297
2298 /* the following codecs use external GPL libs */
2299 extern AVCodec ac3_decoder;
2300 extern AVCodec dts_decoder;
2301
2302 /* subtitles */
2303 extern AVCodec dvdsub_encoder;
2304 extern AVCodec dvdsub_decoder;
2305 extern AVCodec dvbsub_encoder;
2306 extern AVCodec dvbsub_decoder;
2307
2308 /* resample.c */
2309
2310 struct ReSampleContext;
2311 struct AVResampleContext;
2312
2313 typedef struct ReSampleContext ReSampleContext;
2314
2315 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2316 int output_rate, int input_rate);
2317 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2318 void audio_resample_close(ReSampleContext *s);
2319
2320 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2321 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2322 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2323 void av_resample_close(struct AVResampleContext *c);
2324
2325 /* YUV420 format is assumed ! */
2326
2327 struct ImgReSampleContext;
2328
2329 typedef struct ImgReSampleContext ImgReSampleContext;
2330
2331 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2332 int input_width, int input_height);
2333
2334 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2335 int iwidth, int iheight,
2336 int topBand, int bottomBand,
2337 int leftBand, int rightBand,
2338 int padtop, int padbottom,
2339 int padleft, int padright);
2340
2341
2342 void img_resample(ImgReSampleContext *s,
2343 AVPicture *output, const AVPicture *input);
2344
2345 void img_resample_close(ImgReSampleContext *s);
2346
2347 /**
2348 * Allocate memory for a picture. Call avpicture_free to free it.
2349 *
2350 * @param picture the picture to be filled in.
2351 * @param pix_fmt the format of the picture.
2352 * @param width the width of the picture.
2353 * @param height the height of the picture.
2354 * @return 0 if successful, -1 if not.
2355 */
2356 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2357
2358 /* Free a picture previously allocated by avpicture_alloc. */
2359 void avpicture_free(AVPicture *picture);
2360
2361 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2362 int pix_fmt, int width, int height);
2363 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2364 unsigned char *dest, int dest_size);
2365 int avpicture_get_size(int pix_fmt, int width, int height);
2366 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2367 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2368 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2369 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2370 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2371
2372 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2373 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2374 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2375 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2376 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2377 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2378
2379 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2380 int has_alpha);
2381 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2382 int has_alpha, int *loss_ptr);
2383
2384 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2385 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2386 int img_get_alpha_info(const AVPicture *src,
2387 int pix_fmt, int width, int height);
2388
2389 /* convert among pixel formats */
2390 int img_convert(AVPicture *dst, int dst_pix_fmt,
2391 const AVPicture *src, int pix_fmt,
2392 int width, int height);
2393
2394 /* deinterlace a picture */
2395 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2396 int pix_fmt, int width, int height);
2397
2398 /* external high level API */
2399
2400 extern AVCodec *first_avcodec;
2401
2402 /* returns LIBAVCODEC_VERSION_INT constant */
2403 unsigned avcodec_version(void);
2404 /* returns LIBAVCODEC_BUILD constant */
2405 unsigned avcodec_build(void);
2406 void avcodec_init(void);
2407
2408 void register_avcodec(AVCodec *format);
2409 AVCodec *avcodec_find_encoder(enum CodecID id);
2410 AVCodec *avcodec_find_encoder_by_name(const char *name);
2411 AVCodec *avcodec_find_decoder(enum CodecID id);
2412 AVCodec *avcodec_find_decoder_by_name(const char *name);
2413 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2414
2415 void avcodec_get_context_defaults(AVCodecContext *s);
2416 AVCodecContext *avcodec_alloc_context(void);
2417 void avcodec_get_frame_defaults(AVFrame *pic);
2418 AVFrame *avcodec_alloc_frame(void);
2419
2420 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2421 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2422 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2423 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2424 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2425 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2426
2427 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2428 void avcodec_thread_free(AVCodecContext *s);
2429 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2430 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2431 //FIXME func typedef
2432
2433 /**
2434 * opens / inits the AVCodecContext.
2435 * not thread save!
2436 */
2437 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2438
2439 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2440 int *frame_size_ptr,
2441 uint8_t *buf, int buf_size);
2442 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2443 int *got_picture_ptr,
2444 uint8_t *buf, int buf_size);
2445 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2446 int *got_sub_ptr,
2447 const uint8_t *buf, int buf_size);
2448 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2449 int *data_size_ptr,
2450 uint8_t *buf, int buf_size);
2451 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2452 const short *samples);
2453 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2454 const AVFrame *pict);
2455 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2456 const AVSubtitle *sub);
2457
2458 int avcodec_close(AVCodecContext *avctx);
2459
2460 void avcodec_register_all(void);
2461
2462 void avcodec_flush_buffers(AVCodecContext *avctx);
2463
2464 void avcodec_default_free_buffers(AVCodecContext *s);
2465
2466 /* misc usefull functions */
2467
2468 /**
2469 * returns a single letter to describe the picture type
2470 */
2471 char av_get_pict_type_char(int pict_type);
2472
2473
2474 /* frame parsing */
2475 typedef struct AVCodecParserContext {
2476 void *priv_data;
2477 struct AVCodecParser *parser;
2478 int64_t frame_offset; /* offset of the current frame */
2479 int64_t cur_offset; /* current offset
2480 (incremented by each av_parser_parse()) */
2481 int64_t last_frame_offset; /* offset of the last frame */
2482 /* video info */
2483 int pict_type; /* XXX: put it back in AVCodecContext */
2484 int repeat_pict; /* XXX: put it back in AVCodecContext */
2485 int64_t pts; /* pts of the current frame */
2486 int64_t dts; /* dts of the current frame */
2487
2488 /* private data */
2489 int64_t last_pts;
2490 int64_t last_dts;
2491 int fetch_timestamp;
2492
2493 #define AV_PARSER_PTS_NB 4
2494 int cur_frame_start_index;
2495 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2496 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2497 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2498
2499 int flags;
2500 #define PARSER_FLAG_COMPLETE_FRAMES 0x0001
2501 } AVCodecParserContext;
2502
2503 typedef struct AVCodecParser {
2504 int codec_ids[5]; /* several codec IDs are permitted */
2505 int priv_data_size;
2506 int (*parser_init)(AVCodecParserContext *s);
2507 int (*parser_parse)(AVCodecParserContext *s,
2508 AVCodecContext *avctx,
2509 uint8_t **poutbuf, int *poutbuf_size,
2510 const uint8_t *buf, int buf_size);
2511 void (*parser_close)(AVCodecParserContext *s);
2512 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2513 struct AVCodecParser *next;
2514 } AVCodecParser;
2515
2516 extern AVCodecParser *av_first_parser;
2517
2518 void av_register_codec_parser(AVCodecParser *parser);
2519 AVCodecParserContext *av_parser_init(int codec_id);
2520 int av_parser_parse(AVCodecParserContext *s,
2521 AVCodecContext *avctx,
2522 uint8_t **poutbuf, int *poutbuf_size,
2523 const uint8_t *buf, int buf_size,
2524 int64_t pts, int64_t dts);
2525 int av_parser_change(AVCodecParserContext *s,
2526 AVCodecContext *avctx,
2527 uint8_t **poutbuf, int *poutbuf_size,
2528 const uint8_t *buf, int buf_size, int keyframe);
2529 void av_parser_close(AVCodecParserContext *s);
2530
2531 extern AVCodecParser mpegvideo_parser;
2532 extern AVCodecParser mpeg4video_parser;
2533 extern AVCodecParser h261_parser;
2534 extern AVCodecParser h263_parser;
2535 extern AVCodecParser h264_parser;
2536 extern AVCodecParser mjpeg_parser;
2537 extern AVCodecParser pnm_parser;
2538 extern AVCodecParser mpegaudio_parser;
2539 extern AVCodecParser ac3_parser;
2540 extern AVCodecParser dvdsub_parser;
2541 extern AVCodecParser dvbsub_parser;
2542 extern AVCodecParser aac_parser;
2543
2544 /* memory */
2545 void *av_malloc(unsigned int size);
2546 void *av_mallocz(unsigned int size);
2547 void *av_realloc(void *ptr, unsigned int size);
2548 void av_free(void *ptr);
2549 char *av_strdup(const char *s);
2550 void av_freep(void *ptr);
2551 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2552 /* for static data only */
2553 /* call av_free_static to release all staticaly allocated tables */
2554 void av_free_static(void);
2555 void *av_mallocz_static(unsigned int size);
2556 void *av_realloc_static(void *ptr, unsigned int size);
2557
2558 /* add by bero : in adx.c */
2559 int is_adx(const unsigned char *buf,size_t bufsize);
2560
2561 void img_copy(AVPicture *dst, const AVPicture *src,
2562 int pix_fmt, int width, int height);
2563
2564 int img_crop(AVPicture *dst, const AVPicture *src,
2565 int pix_fmt, int top_band, int left_band);
2566
2567 /* av_log API */
2568
2569 #include <stdarg.h>
2570
2571 #define AV_LOG_QUIET -1
2572 #define AV_LOG_ERROR 0
2573 #define AV_LOG_INFO 1
2574 #define AV_LOG_DEBUG 2
2575
2576 #ifdef __GNUC__
2577 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2578 #else
2579 extern void av_log(void*, int level, const char *fmt, ...);
2580 #endif
2581
2582 extern void av_vlog(void*, int level, const char *fmt, va_list);
2583 extern int av_log_get_level(void);
2584 extern void av_log_set_level(int);
2585 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2586
2587 /* endian macros */
2588 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2589 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2590 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2591 (((uint8_t*)(x))[1] << 16) | \
2592 (((uint8_t*)(x))[2] << 8) | \
2593 ((uint8_t*)(x))[3])
2594 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2595 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2596 (((uint8_t*)(x))[2] << 16) | \
2597 (((uint8_t*)(x))[1] << 8) | \
2598 ((uint8_t*)(x))[0])
2599 #endif
2600
2601 extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2602
2603 #ifdef __cplusplus
2604 }
2605 #endif
2606
2607 #endif /* AVCODEC_H */