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-rw-r--r--apps/codecs/libcook/Makefile.test2
-rw-r--r--apps/codecs/libcook/avcodec.h3435
-rw-r--r--apps/codecs/libcook/bitstream.c1
3 files changed, 1 insertions, 3437 deletions
diff --git a/apps/codecs/libcook/Makefile.test b/apps/codecs/libcook/Makefile.test
index d992eceeb8..7f804e40f6 100644
--- a/apps/codecs/libcook/Makefile.test
+++ b/apps/codecs/libcook/Makefile.test
@@ -1,7 +1,7 @@
1CFLAGS = -Wall -O3 1CFLAGS = -Wall -O3
2OBJS = main.o bitstream.o cook.o libavutil/log.o libavutil/mem.o libavutil/lfg.o libavutil/md5.o rm2wav.o 2OBJS = main.o bitstream.o cook.o libavutil/log.o libavutil/mem.o libavutil/lfg.o libavutil/md5.o rm2wav.o
3cooktest: $(OBJS) 3cooktest: $(OBJS)
4 gcc -o cooktest $(OBJS) -lm 4 gcc -o cooktest $(OBJS)
5 5
6.c.o : 6.c.o :
7 $(CC) $(CFLAGS) -c -o $@ $< 7 $(CC) $(CFLAGS) -c -o $@ $<
diff --git a/apps/codecs/libcook/avcodec.h b/apps/codecs/libcook/avcodec.h
deleted file mode 100644
index 08eb800d4b..0000000000
--- a/apps/codecs/libcook/avcodec.h
+++ /dev/null
@@ -1,3435 +0,0 @@
1/*
2 * copyright (c) 2001 Fabrice Bellard
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#ifndef AVCODEC_AVCODEC_H
22#define AVCODEC_AVCODEC_H
23
24/**
25 * @file libavcodec/avcodec.h
26 * external API header
27 */
28
29#include <errno.h>
30#include "libavutil/avutil.h"
31
32#define LIBAVCODEC_VERSION_MAJOR 52
33#define LIBAVCODEC_VERSION_MINOR 22
34#define LIBAVCODEC_VERSION_MICRO 0
35
36#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
37 LIBAVCODEC_VERSION_MINOR, \
38 LIBAVCODEC_VERSION_MICRO)
39#define LIBAVCODEC_VERSION AV_VERSION(LIBAVCODEC_VERSION_MAJOR, \
40 LIBAVCODEC_VERSION_MINOR, \
41 LIBAVCODEC_VERSION_MICRO)
42#define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
43
44#define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
45
46#define AV_NOPTS_VALUE INT64_C(0x8000000000000000)
47#define AV_TIME_BASE 1000000
48#define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE}
49
50/**
51 * Identifies the syntax and semantics of the bitstream.
52 * The principle is roughly:
53 * Two decoders with the same ID can decode the same streams.
54 * Two encoders with the same ID can encode compatible streams.
55 * There may be slight deviations from the principle due to implementation
56 * details.
57 *
58 * If you add a codec ID to this list, add it so that
59 * 1. no value of a existing codec ID changes (that would break ABI),
60 * 2. it is as close as possible to similar codecs.
61 */
62enum CodecID {
63 CODEC_ID_NONE,
64
65 /* video codecs */
66 CODEC_ID_MPEG1VIDEO,
67 CODEC_ID_MPEG2VIDEO, ///< preferred ID for MPEG-1/2 video decoding
68 CODEC_ID_MPEG2VIDEO_XVMC,
69 CODEC_ID_H261,
70 CODEC_ID_H263,
71 CODEC_ID_RV10,
72 CODEC_ID_RV20,
73 CODEC_ID_MJPEG,
74 CODEC_ID_MJPEGB,
75 CODEC_ID_LJPEG,
76 CODEC_ID_SP5X,
77 CODEC_ID_JPEGLS,
78 CODEC_ID_MPEG4,
79 CODEC_ID_RAWVIDEO,
80 CODEC_ID_MSMPEG4V1,
81 CODEC_ID_MSMPEG4V2,
82 CODEC_ID_MSMPEG4V3,
83 CODEC_ID_WMV1,
84 CODEC_ID_WMV2,
85 CODEC_ID_H263P,
86 CODEC_ID_H263I,
87 CODEC_ID_FLV1,
88 CODEC_ID_SVQ1,
89 CODEC_ID_SVQ3,
90 CODEC_ID_DVVIDEO,
91 CODEC_ID_HUFFYUV,
92 CODEC_ID_CYUV,
93 CODEC_ID_H264,
94 CODEC_ID_INDEO3,
95 CODEC_ID_VP3,
96 CODEC_ID_THEORA,
97 CODEC_ID_ASV1,
98 CODEC_ID_ASV2,
99 CODEC_ID_FFV1,
100 CODEC_ID_4XM,
101 CODEC_ID_VCR1,
102 CODEC_ID_CLJR,
103 CODEC_ID_MDEC,
104 CODEC_ID_ROQ,
105 CODEC_ID_INTERPLAY_VIDEO,
106 CODEC_ID_XAN_WC3,
107 CODEC_ID_XAN_WC4,
108 CODEC_ID_RPZA,
109 CODEC_ID_CINEPAK,
110 CODEC_ID_WS_VQA,
111 CODEC_ID_MSRLE,
112 CODEC_ID_MSVIDEO1,
113 CODEC_ID_IDCIN,
114 CODEC_ID_8BPS,
115 CODEC_ID_SMC,
116 CODEC_ID_FLIC,
117 CODEC_ID_TRUEMOTION1,
118 CODEC_ID_VMDVIDEO,
119 CODEC_ID_MSZH,
120 CODEC_ID_ZLIB,
121 CODEC_ID_QTRLE,
122 CODEC_ID_SNOW,
123 CODEC_ID_TSCC,
124 CODEC_ID_ULTI,
125 CODEC_ID_QDRAW,
126 CODEC_ID_VIXL,
127 CODEC_ID_QPEG,
128 CODEC_ID_XVID,
129 CODEC_ID_PNG,
130 CODEC_ID_PPM,
131 CODEC_ID_PBM,
132 CODEC_ID_PGM,
133 CODEC_ID_PGMYUV,
134 CODEC_ID_PAM,
135 CODEC_ID_FFVHUFF,
136 CODEC_ID_RV30,
137 CODEC_ID_RV40,
138 CODEC_ID_VC1,
139 CODEC_ID_WMV3,
140 CODEC_ID_LOCO,
141 CODEC_ID_WNV1,
142 CODEC_ID_AASC,
143 CODEC_ID_INDEO2,
144 CODEC_ID_FRAPS,
145 CODEC_ID_TRUEMOTION2,
146 CODEC_ID_BMP,
147 CODEC_ID_CSCD,
148 CODEC_ID_MMVIDEO,
149 CODEC_ID_ZMBV,
150 CODEC_ID_AVS,
151 CODEC_ID_SMACKVIDEO,
152 CODEC_ID_NUV,
153 CODEC_ID_KMVC,
154 CODEC_ID_FLASHSV,
155 CODEC_ID_CAVS,
156 CODEC_ID_JPEG2000,
157 CODEC_ID_VMNC,
158 CODEC_ID_VP5,
159 CODEC_ID_VP6,
160 CODEC_ID_VP6F,
161 CODEC_ID_TARGA,
162 CODEC_ID_DSICINVIDEO,
163 CODEC_ID_TIERTEXSEQVIDEO,
164 CODEC_ID_TIFF,
165 CODEC_ID_GIF,
166 CODEC_ID_FFH264,
167 CODEC_ID_DXA,
168 CODEC_ID_DNXHD,
169 CODEC_ID_THP,
170 CODEC_ID_SGI,
171 CODEC_ID_C93,
172 CODEC_ID_BETHSOFTVID,
173 CODEC_ID_PTX,
174 CODEC_ID_TXD,
175 CODEC_ID_VP6A,
176 CODEC_ID_AMV,
177 CODEC_ID_VB,
178 CODEC_ID_PCX,
179 CODEC_ID_SUNRAST,
180 CODEC_ID_INDEO4,
181 CODEC_ID_INDEO5,
182 CODEC_ID_MIMIC,
183 CODEC_ID_RL2,
184 CODEC_ID_8SVX_EXP,
185 CODEC_ID_8SVX_FIB,
186 CODEC_ID_ESCAPE124,
187 CODEC_ID_DIRAC,
188 CODEC_ID_BFI,
189 CODEC_ID_CMV,
190 CODEC_ID_MOTIONPIXELS,
191 CODEC_ID_TGV,
192 CODEC_ID_TGQ,
193 CODEC_ID_TQI,
194
195 /* various PCM "codecs" */
196 CODEC_ID_PCM_S16LE= 0x10000,
197 CODEC_ID_PCM_S16BE,
198 CODEC_ID_PCM_U16LE,
199 CODEC_ID_PCM_U16BE,
200 CODEC_ID_PCM_S8,
201 CODEC_ID_PCM_U8,
202 CODEC_ID_PCM_MULAW,
203 CODEC_ID_PCM_ALAW,
204 CODEC_ID_PCM_S32LE,
205 CODEC_ID_PCM_S32BE,
206 CODEC_ID_PCM_U32LE,
207 CODEC_ID_PCM_U32BE,
208 CODEC_ID_PCM_S24LE,
209 CODEC_ID_PCM_S24BE,
210 CODEC_ID_PCM_U24LE,
211 CODEC_ID_PCM_U24BE,
212 CODEC_ID_PCM_S24DAUD,
213 CODEC_ID_PCM_ZORK,
214 CODEC_ID_PCM_S16LE_PLANAR,
215 CODEC_ID_PCM_DVD,
216 CODEC_ID_PCM_F32BE,
217 CODEC_ID_PCM_F32LE,
218 CODEC_ID_PCM_F64BE,
219 CODEC_ID_PCM_F64LE,
220
221 /* various ADPCM codecs */
222 CODEC_ID_ADPCM_IMA_QT= 0x11000,
223 CODEC_ID_ADPCM_IMA_WAV,
224 CODEC_ID_ADPCM_IMA_DK3,
225 CODEC_ID_ADPCM_IMA_DK4,
226 CODEC_ID_ADPCM_IMA_WS,
227 CODEC_ID_ADPCM_IMA_SMJPEG,
228 CODEC_ID_ADPCM_MS,
229 CODEC_ID_ADPCM_4XM,
230 CODEC_ID_ADPCM_XA,
231 CODEC_ID_ADPCM_ADX,
232 CODEC_ID_ADPCM_EA,
233 CODEC_ID_ADPCM_G726,
234 CODEC_ID_ADPCM_CT,
235 CODEC_ID_ADPCM_SWF,
236 CODEC_ID_ADPCM_YAMAHA,
237 CODEC_ID_ADPCM_SBPRO_4,
238 CODEC_ID_ADPCM_SBPRO_3,
239 CODEC_ID_ADPCM_SBPRO_2,
240 CODEC_ID_ADPCM_THP,
241 CODEC_ID_ADPCM_IMA_AMV,
242 CODEC_ID_ADPCM_EA_R1,
243 CODEC_ID_ADPCM_EA_R3,
244 CODEC_ID_ADPCM_EA_R2,
245 CODEC_ID_ADPCM_IMA_EA_SEAD,
246 CODEC_ID_ADPCM_IMA_EA_EACS,
247 CODEC_ID_ADPCM_EA_XAS,
248 CODEC_ID_ADPCM_EA_MAXIS_XA,
249 CODEC_ID_ADPCM_IMA_ISS,
250
251 /* AMR */
252 CODEC_ID_AMR_NB= 0x12000,
253 CODEC_ID_AMR_WB,
254
255 /* RealAudio codecs*/
256 CODEC_ID_RA_144= 0x13000,
257 CODEC_ID_RA_288,
258
259 /* various DPCM codecs */
260 CODEC_ID_ROQ_DPCM= 0x14000,
261 CODEC_ID_INTERPLAY_DPCM,
262 CODEC_ID_XAN_DPCM,
263 CODEC_ID_SOL_DPCM,
264
265 /* audio codecs */
266 CODEC_ID_MP2= 0x15000,
267 CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3
268 CODEC_ID_AAC,
269 CODEC_ID_AC3,
270 CODEC_ID_DTS,
271 CODEC_ID_VORBIS,
272 CODEC_ID_DVAUDIO,
273 CODEC_ID_WMAV1,
274 CODEC_ID_WMAV2,
275 CODEC_ID_MACE3,
276 CODEC_ID_MACE6,
277 CODEC_ID_VMDAUDIO,
278 CODEC_ID_SONIC,
279 CODEC_ID_SONIC_LS,
280 CODEC_ID_FLAC,
281 CODEC_ID_MP3ADU,
282 CODEC_ID_MP3ON4,
283 CODEC_ID_SHORTEN,
284 CODEC_ID_ALAC,
285 CODEC_ID_WESTWOOD_SND1,
286 CODEC_ID_GSM, ///< as in Berlin toast format
287 CODEC_ID_QDM2,
288 CODEC_ID_COOK,
289 CODEC_ID_TRUESPEECH,
290 CODEC_ID_TTA,
291 CODEC_ID_SMACKAUDIO,
292 CODEC_ID_QCELP,
293 CODEC_ID_WAVPACK,
294 CODEC_ID_DSICINAUDIO,
295 CODEC_ID_IMC,
296 CODEC_ID_MUSEPACK7,
297 CODEC_ID_MLP,
298 CODEC_ID_GSM_MS, /* as found in WAV */
299 CODEC_ID_ATRAC3,
300 CODEC_ID_VOXWARE,
301 CODEC_ID_APE,
302 CODEC_ID_NELLYMOSER,
303 CODEC_ID_MUSEPACK8,
304 CODEC_ID_SPEEX,
305 CODEC_ID_WMAVOICE,
306 CODEC_ID_WMAPRO,
307 CODEC_ID_WMALOSSLESS,
308 CODEC_ID_ATRAC3P,
309 CODEC_ID_EAC3,
310 CODEC_ID_SIPR,
311 CODEC_ID_MP1,
312 CODEC_ID_TWINVQ,
313 CODEC_ID_TRUEHD,
314
315 /* subtitle codecs */
316 CODEC_ID_DVD_SUBTITLE= 0x17000,
317 CODEC_ID_DVB_SUBTITLE,
318 CODEC_ID_TEXT, ///< raw UTF-8 text
319 CODEC_ID_XSUB,
320 CODEC_ID_SSA,
321 CODEC_ID_MOV_TEXT,
322
323 /* other specific kind of codecs (generally used for attachments) */
324 CODEC_ID_TTF= 0x18000,
325
326 CODEC_ID_PROBE= 0x19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it
327
328 CODEC_ID_MPEG2TS= 0x20000, /**< _FAKE_ codec to indicate a raw MPEG-2 TS
329 * stream (only used by libavformat) */
330};
331
332enum CodecType {
333 CODEC_TYPE_UNKNOWN = -1,
334 CODEC_TYPE_VIDEO,
335 CODEC_TYPE_AUDIO,
336 CODEC_TYPE_DATA,
337 CODEC_TYPE_SUBTITLE,
338 CODEC_TYPE_ATTACHMENT,
339 CODEC_TYPE_NB
340};
341
342/**
343 * all in native-endian format
344 */
345enum SampleFormat {
346 SAMPLE_FMT_NONE = -1,
347 SAMPLE_FMT_U8, ///< unsigned 8 bits
348 SAMPLE_FMT_S16, ///< signed 16 bits
349 SAMPLE_FMT_S32, ///< signed 32 bits
350 SAMPLE_FMT_FLT, ///< float
351 SAMPLE_FMT_DBL, ///< double
352 SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if dynamically linking to libavcodec
353};
354
355/* Audio channel masks */
356#define CH_FRONT_LEFT 0x00000001
357#define CH_FRONT_RIGHT 0x00000002
358#define CH_FRONT_CENTER 0x00000004
359#define CH_LOW_FREQUENCY 0x00000008
360#define CH_BACK_LEFT 0x00000010
361#define CH_BACK_RIGHT 0x00000020
362#define CH_FRONT_LEFT_OF_CENTER 0x00000040
363#define CH_FRONT_RIGHT_OF_CENTER 0x00000080
364#define CH_BACK_CENTER 0x00000100
365#define CH_SIDE_LEFT 0x00000200
366#define CH_SIDE_RIGHT 0x00000400
367#define CH_TOP_CENTER 0x00000800
368#define CH_TOP_FRONT_LEFT 0x00001000
369#define CH_TOP_FRONT_CENTER 0x00002000
370#define CH_TOP_FRONT_RIGHT 0x00004000
371#define CH_TOP_BACK_LEFT 0x00008000
372#define CH_TOP_BACK_CENTER 0x00010000
373#define CH_TOP_BACK_RIGHT 0x00020000
374#define CH_STEREO_LEFT 0x20000000 ///< Stereo downmix.
375#define CH_STEREO_RIGHT 0x40000000 ///< See CH_STEREO_LEFT.
376
377/* Audio channel convenience macros */
378#define CH_LAYOUT_MONO (CH_FRONT_CENTER)
379#define CH_LAYOUT_STEREO (CH_FRONT_LEFT|CH_FRONT_RIGHT)
380#define CH_LAYOUT_SURROUND (CH_LAYOUT_STEREO|CH_FRONT_CENTER)
381#define CH_LAYOUT_QUAD (CH_LAYOUT_STEREO|CH_BACK_LEFT|CH_BACK_RIGHT)
382#define CH_LAYOUT_5POINT0 (CH_LAYOUT_SURROUND|CH_SIDE_LEFT|CH_SIDE_RIGHT)
383#define CH_LAYOUT_5POINT1 (CH_LAYOUT_5POINT0|CH_LOW_FREQUENCY)
384#define CH_LAYOUT_7POINT1 (CH_LAYOUT_5POINT1|CH_BACK_LEFT|CH_BACK_RIGHT)
385#define CH_LAYOUT_7POINT1_WIDE (CH_LAYOUT_SURROUND|CH_LOW_FREQUENCY|\
386 CH_BACK_LEFT|CH_BACK_RIGHT|\
387 CH_FRONT_LEFT_OF_CENTER|CH_FRONT_RIGHT_OF_CENTER)
388#define CH_LAYOUT_STEREO_DOWNMIX (CH_STEREO_LEFT|CH_STEREO_RIGHT)
389
390/* in bytes */
391#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
392
393/**
394 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
395 * This is mainly needed because some optimized bitstream readers read
396 * 32 or 64 bit at once and could read over the end.<br>
397 * Note: If the first 23 bits of the additional bytes are not 0, then damaged
398 * MPEG bitstreams could cause overread and segfault.
399 */
400#define FF_INPUT_BUFFER_PADDING_SIZE 8
401
402/**
403 * minimum encoding buffer size
404 * Used to avoid some checks during header writing.
405 */
406#define FF_MIN_BUFFER_SIZE 16384
407
408
409#if 0/* MT : DELETE THIS LINE.*/
410/**
411 * motion estimation type.
412 */
413enum Motion_Est_ID {
414 ME_ZERO = 1, ///< no search, that is use 0,0 vector whenever one is needed
415 ME_FULL,
416 ME_LOG,
417 ME_PHODS,
418 ME_EPZS, ///< enhanced predictive zonal search
419 ME_X1, ///< reserved for experiments
420 ME_HEX, ///< hexagon based search
421 ME_UMH, ///< uneven multi-hexagon search
422 ME_ITER, ///< iterative search
423 ME_TESA, ///< transformed exhaustive search algorithm
424};
425
426enum AVDiscard{
427 /* We leave some space between them for extensions (drop some
428 * keyframes for intra-only or drop just some bidir frames). */
429 AVDISCARD_NONE =-16, ///< discard nothing
430 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
431 AVDISCARD_NONREF = 8, ///< discard all non reference
432 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
433 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
434 AVDISCARD_ALL = 48, ///< discard all
435};
436
437typedef struct RcOverride{
438 int start_frame;
439 int end_frame;
440 int qscale; // If this is 0 then quality_factor will be used instead.
441 float quality_factor;
442} RcOverride;
443
444#define FF_MAX_B_FRAMES 16
445
446/* encoding support
447 These flags can be passed in AVCodecContext.flags before initialization.
448 Note: Not everything is supported yet.
449*/
450
451#define CODEC_FLAG_QSCALE 0x0002 ///< Use fixed qscale.
452#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / advanced prediction for H.263.
453#define CODEC_FLAG_QPEL 0x0010 ///< Use qpel MC.
454#define CODEC_FLAG_GMC 0x0020 ///< Use GMC.
455#define CODEC_FLAG_MV0 0x0040 ///< Always try a MB with MV=<0,0>.
456#define CODEC_FLAG_PART 0x0080 ///< Use data partitioning.
457/**
458 * The parent program guarantees that the input for B-frames containing
459 * streams is not written to for at least s->max_b_frames+1 frames, if
460 * this is not set the input will be copied.
461 */
462#define CODEC_FLAG_INPUT_PRESERVED 0x0100
463#define CODEC_FLAG_PASS1 0x0200 ///< Use internal 2pass ratecontrol in first pass mode.
464#define CODEC_FLAG_PASS2 0x0400 ///< Use internal 2pass ratecontrol in second pass mode.
465#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< Use external Huffman table (for MJPEG).
466#define CODEC_FLAG_GRAY 0x2000 ///< Only decode/encode grayscale.
467#define CODEC_FLAG_EMU_EDGE 0x4000 ///< Don't draw edges.
468#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding.
469#define CODEC_FLAG_TRUNCATED 0x00010000 /** Input bitstream might be truncated at a random
470 location instead of only at frame boundaries. */
471#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< Normalize adaptive quantization.
472#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< Use interlaced DCT.
473#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< Force low delay.
474#define CODEC_FLAG_ALT_SCAN 0x00100000 ///< Use alternate scan.
475#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< Place global headers in extradata instead of every keyframe.
476#define CODEC_FLAG_BITEXACT 0x00800000 ///< Use only bitexact stuff (except (I)DCT).
477/* Fx : Flag for h263+ extra options */
478#define CODEC_FLAG_AC_PRED 0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction
479#define CODEC_FLAG_H263P_UMV 0x02000000 ///< unlimited motion vector
480#define CODEC_FLAG_CBP_RD 0x04000000 ///< Use rate distortion optimization for cbp.
481#define CODEC_FLAG_QP_RD 0x08000000 ///< Use rate distortion optimization for qp selectioon.
482#define CODEC_FLAG_H263P_AIV 0x00000008 ///< H.263 alternative inter VLC
483#define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
484#define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
485#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
486#define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
487#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< Will reserve space for SVCD scan offset user data.
488#define CODEC_FLAG_CLOSED_GOP 0x80000000
489#define CODEC_FLAG2_FAST 0x00000001 ///< Allow non spec compliant speedup tricks.
490#define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< Strictly enforce GOP size.
491#define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< Skip bitstream encoding.
492#define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< Place global headers at every keyframe instead of in extradata.
493#define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow B-frames to be used as references.
494#define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for B-frames
495#define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 one reference per partition, as opposed to one reference per macroblock
496#define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform
497#define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip
498#define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters
499#define CODEC_FLAG2_BRDO 0x00000400 ///< B-frame rate-distortion optimization
500#define CODEC_FLAG2_INTRA_VLC 0x00000800 ///< Use MPEG-2 intra VLC table.
501#define CODEC_FLAG2_MEMC_ONLY 0x00001000 ///< Only do ME/MC (I frames -> ref, P frame -> ME+MC).
502#define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format.
503#define CODEC_FLAG2_SKIP_RD 0x00004000 ///< RD optimal MB level residual skipping
504#define CODEC_FLAG2_CHUNKS 0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
505#define CODEC_FLAG2_NON_LINEAR_QUANT 0x00010000 ///< Use MPEG-2 nonlinear quantizer.
506#define CODEC_FLAG2_BIT_RESERVOIR 0x00020000 ///< Use a bit reservoir when encoding if possible
507
508/* Unsupported options :
509 * Syntax Arithmetic coding (SAC)
510 * Reference Picture Selection
511 * Independent Segment Decoding */
512/* /Fx */
513/* codec capabilities */
514
515#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< Decoder can use draw_horiz_band callback.
516/**
517 * Codec uses get_buffer() for allocating buffers.
518 * direct rendering method 1
519 */
520#define CODEC_CAP_DR1 0x0002
521/* If 'parse_only' field is true, then avcodec_parse_frame() can be used. */
522#define CODEC_CAP_PARSE_ONLY 0x0004
523#define CODEC_CAP_TRUNCATED 0x0008
524/* Codec can export data for HW decoding (XvMC). */
525#define CODEC_CAP_HWACCEL 0x0010
526/**
527 * Codec has a nonzero delay and needs to be fed with NULL at the end to get the delayed data.
528 * If this is not set, the codec is guaranteed to never be fed with NULL data.
529 */
530#define CODEC_CAP_DELAY 0x0020
531/**
532 * Codec can be fed a final frame with a smaller size.
533 * This can be used to prevent truncation of the last audio samples.
534 */
535#define CODEC_CAP_SMALL_LAST_FRAME 0x0040
536/**
537 * Codec can export data for HW decoding (VDPAU).
538 */
539#define CODEC_CAP_HWACCEL_VDPAU 0x0080
540
541//The following defines may change, don't expect compatibility if you use them.
542#define MB_TYPE_INTRA4x4 0x0001
543#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific
544#define MB_TYPE_INTRA_PCM 0x0004 //FIXME H.264-specific
545#define MB_TYPE_16x16 0x0008
546#define MB_TYPE_16x8 0x0010
547#define MB_TYPE_8x16 0x0020
548#define MB_TYPE_8x8 0x0040
549#define MB_TYPE_INTERLACED 0x0080
550#define MB_TYPE_DIRECT2 0x0100 //FIXME
551#define MB_TYPE_ACPRED 0x0200
552#define MB_TYPE_GMC 0x0400
553#define MB_TYPE_SKIP 0x0800
554#define MB_TYPE_P0L0 0x1000
555#define MB_TYPE_P1L0 0x2000
556#define MB_TYPE_P0L1 0x4000
557#define MB_TYPE_P1L1 0x8000
558#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
559#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
560#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
561#define MB_TYPE_QUANT 0x00010000
562#define MB_TYPE_CBP 0x00020000
563//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
564
565/**
566 * Pan Scan area.
567 * This specifies the area which should be displayed.
568 * Note there may be multiple such areas for one frame.
569 */
570typedef struct AVPanScan{
571 /**
572 * id
573 * - encoding: Set by user.
574 * - decoding: Set by libavcodec.
575 */
576 int id;
577
578 /**
579 * width and height in 1/16 pel
580 * - encoding: Set by user.
581 * - decoding: Set by libavcodec.
582 */
583 int width;
584 int height;
585
586 /**
587 * position of the top left corner in 1/16 pel for up to 3 fields/frames
588 * - encoding: Set by user.
589 * - decoding: Set by libavcodec.
590 */
591 int16_t position[3][2];
592}AVPanScan;
593
594#define FF_COMMON_FRAME \
595 /**\
596 * pointer to the picture planes.\
597 * This might be different from the first allocated byte\
598 * - encoding: \
599 * - decoding: \
600 */\
601 uint8_t *data[4];\
602 int linesize[4];\
603 /**\
604 * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.\
605 * This isn't used by libavcodec unless the default get/release_buffer() is used.\
606 * - encoding: \
607 * - decoding: \
608 */\
609 uint8_t *base[4];\
610 /**\
611 * 1 -> keyframe, 0-> not\
612 * - encoding: Set by libavcodec.\
613 * - decoding: Set by libavcodec.\
614 */\
615 int key_frame;\
616\
617 /**\
618 * Picture type of the frame, see ?_TYPE below.\
619 * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
620 * - decoding: Set by libavcodec.\
621 */\
622 int pict_type;\
623\
624 /**\
625 * presentation timestamp in time_base units (time when frame should be shown to user)\
626 * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.\
627 * - encoding: MUST be set by user.\
628 * - decoding: Set by libavcodec.\
629 */\
630 int64_t pts;\
631\
632 /**\
633 * picture number in bitstream order\
634 * - encoding: set by\
635 * - decoding: Set by libavcodec.\
636 */\
637 int coded_picture_number;\
638 /**\
639 * picture number in display order\
640 * - encoding: set by\
641 * - decoding: Set by libavcodec.\
642 */\
643 int display_picture_number;\
644\
645 /**\
646 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
647 * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
648 * - decoding: Set by libavcodec.\
649 */\
650 int quality; \
651\
652 /**\
653 * buffer age (1->was last buffer and dint change, 2->..., ...).\
654 * Set to INT_MAX if the buffer has not been used yet.\
655 * - encoding: unused\
656 * - decoding: MUST be set by get_buffer().\
657 */\
658 int age;\
659\
660 /**\
661 * is this picture used as reference\
662 * The values for this are the same as the MpegEncContext.picture_structure\
663 * variable, that is 1->top field, 2->bottom field, 3->frame/both fields.\
664 * Set to 4 for delayed, non-reference frames.\
665 * - encoding: unused\
666 * - decoding: Set by libavcodec. (before get_buffer() call)).\
667 */\
668 int reference;\
669\
670 /**\
671 * QP table\
672 * - encoding: unused\
673 * - decoding: Set by libavcodec.\
674 */\
675 int8_t *qscale_table;\
676 /**\
677 * QP store stride\
678 * - encoding: unused\
679 * - decoding: Set by libavcodec.\
680 */\
681 int qstride;\
682\
683 /**\
684 * mbskip_table[mb]>=1 if MB didn't change\
685 * stride= mb_width = (width+15)>>4\
686 * - encoding: unused\
687 * - decoding: Set by libavcodec.\
688 */\
689 uint8_t *mbskip_table;\
690\
691 /**\
692 * motion vector table\
693 * @code\
694 * example:\
695 * int mv_sample_log2= 4 - motion_subsample_log2;\
696 * int mb_width= (width+15)>>4;\
697 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
698 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
699 * @endcode\
700 * - encoding: Set by user.\
701 * - decoding: Set by libavcodec.\
702 */\
703 int16_t (*motion_val[2])[2];\
704\
705 /**\
706 * macroblock type table\
707 * mb_type_base + mb_width + 2\
708 * - encoding: Set by user.\
709 * - decoding: Set by libavcodec.\
710 */\
711 uint32_t *mb_type;\
712\
713 /**\
714 * log2 of the size of the block which a single vector in motion_val represents: \
715 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
716 * - encoding: unused\
717 * - decoding: Set by libavcodec.\
718 */\
719 uint8_t motion_subsample_log2;\
720\
721 /**\
722 * for some private data of the user\
723 * - encoding: unused\
724 * - decoding: Set by user.\
725 */\
726 void *opaque;\
727\
728 /**\
729 * error\
730 * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.\
731 * - decoding: unused\
732 */\
733 uint64_t error[4];\
734\
735 /**\
736 * type of the buffer (to keep track of who has to deallocate data[*])\
737 * - encoding: Set by the one who allocates it.\
738 * - decoding: Set by the one who allocates it.\
739 * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.\
740 */\
741 int type;\
742 \
743 /**\
744 * When decoding, this signals how much the picture must be delayed.\
745 * extra_delay = repeat_pict / (2*fps)\
746 * - encoding: unused\
747 * - decoding: Set by libavcodec.\
748 */\
749 int repeat_pict;\
750 \
751 /**\
752 * \
753 */\
754 int qscale_type;\
755 \
756 /**\
757 * The content of the picture is interlaced.\
758 * - encoding: Set by user.\
759 * - decoding: Set by libavcodec. (default 0)\
760 */\
761 int interlaced_frame;\
762 \
763 /**\
764 * If the content is interlaced, is top field displayed first.\
765 * - encoding: Set by user.\
766 * - decoding: Set by libavcodec.\
767 */\
768 int top_field_first;\
769 \
770 /**\
771 * Pan scan.\
772 * - encoding: Set by user.\
773 * - decoding: Set by libavcodec.\
774 */\
775 AVPanScan *pan_scan;\
776 \
777 /**\
778 * Tell user application that palette has changed from previous frame.\
779 * - encoding: ??? (no palette-enabled encoder yet)\
780 * - decoding: Set by libavcodec. (default 0).\
781 */\
782 int palette_has_changed;\
783 \
784 /**\
785 * codec suggestion on buffer type if != 0\
786 * - encoding: unused\
787 * - decoding: Set by libavcodec. (before get_buffer() call)).\
788 */\
789 int buffer_hints;\
790\
791 /**\
792 * DCT coefficients\
793 * - encoding: unused\
794 * - decoding: Set by libavcodec.\
795 */\
796 short *dct_coeff;\
797\
798 /**\
799 * motion referece frame index\
800 * - encoding: Set by user.\
801 * - decoding: Set by libavcodec.\
802 */\
803 int8_t *ref_index[2];\
804\
805 /**\
806 * reordered opaque 64bit number (generally a PTS) from AVCodecContext.reordered_opaque\
807 * output in AVFrame.reordered_opaque\
808 * - encoding: unused\
809 * - decoding: Read by user.\
810 */\
811 int64_t reordered_opaque;\
812\
813 /**\
814 * hardware accelerator private data (FFmpeg allocated)\
815 * - encoding: unused\
816 * - decoding: Set by libavcodec\
817 */\
818 void *hwaccel_picture_private;\
819
820
821#define FF_QSCALE_TYPE_MPEG1 0
822#define FF_QSCALE_TYPE_MPEG2 1
823#define FF_QSCALE_TYPE_H264 2
824
825#define FF_BUFFER_TYPE_INTERNAL 1
826#define FF_BUFFER_TYPE_USER 2 ///< direct rendering buffers (image is (de)allocated by user)
827#define FF_BUFFER_TYPE_SHARED 4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared.
828#define FF_BUFFER_TYPE_COPY 8 ///< Just a (modified) copy of some other buffer, don't deallocate anything.
829
830
831#define FF_I_TYPE 1 ///< Intra
832#define FF_P_TYPE 2 ///< Predicted
833#define FF_B_TYPE 3 ///< Bi-dir predicted
834#define FF_S_TYPE 4 ///< S(GMC)-VOP MPEG4
835#define FF_SI_TYPE 5 ///< Switching Intra
836#define FF_SP_TYPE 6 ///< Switching Predicted
837#define FF_BI_TYPE 7
838
839#define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore).
840#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer.
841#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content.
842#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update).
843
844/**
845 * Audio Video Frame.
846 * New fields can be added to the end of FF_COMMON_FRAME with minor version
847 * bumps.
848 * Removal, reordering and changes to existing fields require a major
849 * version bump. No fields should be added into AVFrame before or after
850 * FF_COMMON_FRAME!
851 * sizeof(AVFrame) must not be used outside libav*.
852 */
853typedef struct AVFrame {
854 FF_COMMON_FRAME
855} AVFrame;
856
857/**
858 * main external API structure.
859 * New fields can be added to the end with minor version bumps.
860 * Removal, reordering and changes to existing fields require a major
861 * version bump.
862 * sizeof(AVCodecContext) must not be used outside libav*.
863 */
864typedef struct AVCodecContext {
865 /**
866 * information on struct for av_log
867 * - set by avcodec_alloc_context
868 */
869 const AVClass *av_class;
870 /**
871 * the average bitrate
872 * - encoding: Set by user; unused for constant quantizer encoding.
873 * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
874 */
875 int bit_rate;
876
877 /**
878 * number of bits the bitstream is allowed to diverge from the reference.
879 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
880 * - encoding: Set by user; unused for constant quantizer encoding.
881 * - decoding: unused
882 */
883 int bit_rate_tolerance;
884
885 /**
886 * CODEC_FLAG_*.
887 * - encoding: Set by user.
888 * - decoding: Set by user.
889 */
890 int flags;
891
892 /**
893 * Some codecs need additional format info. It is stored here.
894 * If any muxer uses this then ALL demuxers/parsers AND encoders for the
895 * specific codec MUST set it correctly otherwise stream copy breaks.
896 * In general use of this field by muxers is not recommanded.
897 * - encoding: Set by libavcodec.
898 * - decoding: Set by libavcodec. (FIXME: Is this OK?)
899 */
900 int sub_id;
901
902 /**
903 * Motion estimation algorithm used for video coding.
904 * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
905 * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific]
906 * - encoding: MUST be set by user.
907 * - decoding: unused
908 */
909 int me_method;
910
911 /**
912 * some codecs need / can use extradata like Huffman tables.
913 * mjpeg: Huffman tables
914 * rv10: additional flags
915 * mpeg4: global headers (they can be in the bitstream or here)
916 * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
917 * than extradata_size to avoid prolems if it is read with the bitstream reader.
918 * The bytewise contents of extradata must not depend on the architecture or CPU endianness.
919 * - encoding: Set/allocated/freed by libavcodec.
920 * - decoding: Set/allocated/freed by user.
921 */
922 uint8_t *extradata;
923 int extradata_size;
924
925 /**
926 * This is the fundamental unit of time (in seconds) in terms
927 * of which frame timestamps are represented. For fixed-fps content,
928 * timebase should be 1/framerate and timestamp increments should be
929 * identically 1.
930 * - encoding: MUST be set by user.
931 * - decoding: Set by libavcodec.
932 */
933 AVRational time_base;
934
935 /* video only */
936 /**
937 * picture width / height.
938 * - encoding: MUST be set by user.
939 * - decoding: Set by libavcodec.
940 * Note: For compatibility it is possible to set this instead of
941 * coded_width/height before decoding.
942 */
943 int width, height;
944
945#define FF_ASPECT_EXTENDED 15
946
947 /**
948 * the number of pictures in a group of pictures, or 0 for intra_only
949 * - encoding: Set by user.
950 * - decoding: unused
951 */
952 int gop_size;
953
954 /**
955 * Pixel format, see PIX_FMT_xxx.
956 * - encoding: Set by user.
957 * - decoding: Set by libavcodec.
958 */
959 enum PixelFormat pix_fmt;
960
961 /**
962 * Frame rate emulation. If not zero, the lower layer (i.e. format handler)
963 * has to read frames at native frame rate.
964 * - encoding: Set by user.
965 * - decoding: unused
966 */
967 int rate_emu;
968
969 /**
970 * If non NULL, 'draw_horiz_band' is called by the libavcodec
971 * decoder to draw a horizontal band. It improves cache usage. Not
972 * all codecs can do that. You must check the codec capabilities
973 * beforehand.
974 * The function is also used by hardware acceleration APIs.
975 * It is called at least once during frame decoding to pass
976 * the data needed for hardware render.
977 * In that mode instead of pixel data, AVFrame points to
978 * a structure specific to the acceleration API. The application
979 * reads the structure and can change some fields to indicate progress
980 * or mark state.
981 * - encoding: unused
982 * - decoding: Set by user.
983 * @param height the height of the slice
984 * @param y the y position of the slice
985 * @param type 1->top field, 2->bottom field, 3->frame
986 * @param offset offset into the AVFrame.data from which the slice should be read
987 */
988 void (*draw_horiz_band)(struct AVCodecContext *s,
989 const AVFrame *src, int offset[4],
990 int y, int type, int height);
991
992 /* audio only */
993 int sample_rate; ///< samples per second
994 int channels; ///< number of audio channels
995
996 /**
997 * audio sample format
998 * - encoding: Set by user.
999 * - decoding: Set by libavcodec.
1000 */
1001 enum SampleFormat sample_fmt; ///< sample format, currently unused
1002
1003 /* The following data should not be initialized. */
1004 /**
1005 * Samples per packet, initialized when calling 'init'.
1006 */
1007 int frame_size;
1008 int frame_number; ///< audio or video frame number
1009 int real_pict_num; ///< Returns the real picture number of previous encoded frame.
1010
1011 /**
1012 * Number of frames the decoded output will be delayed relative to
1013 * the encoded input.
1014 * - encoding: Set by libavcodec.
1015 * - decoding: unused
1016 */
1017 int delay;
1018
1019 /* - encoding parameters */
1020 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
1021 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
1022
1023 /**
1024 * minimum quantizer
1025 * - encoding: Set by user.
1026 * - decoding: unused
1027 */
1028 int qmin;
1029
1030 /**
1031 * maximum quantizer
1032 * - encoding: Set by user.
1033 * - decoding: unused
1034 */
1035 int qmax;
1036
1037 /**
1038 * maximum quantizer difference between frames
1039 * - encoding: Set by user.
1040 * - decoding: unused
1041 */
1042 int max_qdiff;
1043
1044 /**
1045 * maximum number of B-frames between non-B-frames
1046 * Note: The output will be delayed by max_b_frames+1 relative to the input.
1047 * - encoding: Set by user.
1048 * - decoding: unused
1049 */
1050 int max_b_frames;
1051
1052 /**
1053 * qscale factor between IP and B-frames
1054 * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
1055 * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1056 * - encoding: Set by user.
1057 * - decoding: unused
1058 */
1059 float b_quant_factor;
1060
1061 /** obsolete FIXME remove */
1062 int rc_strategy;
1063#define FF_RC_STRATEGY_XVID 1
1064
1065 int b_frame_strategy;
1066
1067 /**
1068 * hurry up amount
1069 * - encoding: unused
1070 * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header
1071 * @deprecated Deprecated in favor of skip_idct and skip_frame.
1072 */
1073 int hurry_up;
1074
1075 struct AVCodec *codec;
1076
1077 void *priv_data;
1078
1079 int rtp_payload_size; /* The size of the RTP payload: the coder will */
1080 /* do its best to deliver a chunk with size */
1081 /* below rtp_payload_size, the chunk will start */
1082 /* with a start code on some codecs like H.263. */
1083 /* This doesn't take account of any particular */
1084 /* headers inside the transmitted RTP payload. */
1085
1086
1087 /* The RTP callback: This function is called */
1088 /* every time the encoder has a packet to send. */
1089 /* It depends on the encoder if the data starts */
1090 /* with a Start Code (it should). H.263 does. */
1091 /* mb_nb contains the number of macroblocks */
1092 /* encoded in the RTP payload. */
1093 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
1094
1095 /* statistics, used for 2-pass encoding */
1096 int mv_bits;
1097 int header_bits;
1098 int i_tex_bits;
1099 int p_tex_bits;
1100 int i_count;
1101 int p_count;
1102 int skip_count;
1103 int misc_bits;
1104
1105 /**
1106 * number of bits used for the previously encoded frame
1107 * - encoding: Set by libavcodec.
1108 * - decoding: unused
1109 */
1110 int frame_bits;
1111
1112 /**
1113 * Private data of the user, can be used to carry app specific stuff.
1114 * - encoding: Set by user.
1115 * - decoding: Set by user.
1116 */
1117 void *opaque;
1118
1119 char codec_name[32];
1120 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
1121 enum CodecID codec_id; /* see CODEC_ID_xxx */
1122
1123 /**
1124 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1125 * This is used to work around some encoder bugs.
1126 * A demuxer should set this to what is stored in the field used to identify the codec.
1127 * If there are multiple such fields in a container then the demuxer should choose the one
1128 * which maximizes the information about the used codec.
1129 * If the codec tag field in a container is larger then 32 bits then the demuxer should
1130 * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
1131 * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
1132 * first.
1133 * - encoding: Set by user, if not then the default based on codec_id will be used.
1134 * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
1135 */
1136 unsigned int codec_tag;
1137
1138 /**
1139 * Work around bugs in encoders which sometimes cannot be detected automatically.
1140 * - encoding: Set by user
1141 * - decoding: Set by user
1142 */
1143 int workaround_bugs;
1144#define FF_BUG_AUTODETECT 1 ///< autodetection
1145#define FF_BUG_OLD_MSMPEG4 2
1146#define FF_BUG_XVID_ILACE 4
1147#define FF_BUG_UMP4 8
1148#define FF_BUG_NO_PADDING 16
1149#define FF_BUG_AMV 32
1150#define FF_BUG_AC_VLC 0 ///< Will be removed, libavcodec can now handle these non-compliant files by default.
1151#define FF_BUG_QPEL_CHROMA 64
1152#define FF_BUG_STD_QPEL 128
1153#define FF_BUG_QPEL_CHROMA2 256
1154#define FF_BUG_DIRECT_BLOCKSIZE 512
1155#define FF_BUG_EDGE 1024
1156#define FF_BUG_HPEL_CHROMA 2048
1157#define FF_BUG_DC_CLIP 4096
1158#define FF_BUG_MS 8192 ///< Work around various bugs in Microsoft's broken decoders.
1159//#define FF_BUG_FAKE_SCALABILITY 16 //Autodetection should work 100%.
1160
1161 /**
1162 * luma single coefficient elimination threshold
1163 * - encoding: Set by user.
1164 * - decoding: unused
1165 */
1166 int luma_elim_threshold;
1167
1168 /**
1169 * chroma single coeff elimination threshold
1170 * - encoding: Set by user.
1171 * - decoding: unused
1172 */
1173 int chroma_elim_threshold;
1174
1175 /**
1176 * strictly follow the standard (MPEG4, ...).
1177 * - encoding: Set by user.
1178 * - decoding: Set by user.
1179 * Setting this to STRICT or higher means the encoder and decoder will
1180 * generally do stupid things. While setting it to inofficial or lower
1181 * will mean the encoder might use things that are not supported by all
1182 * spec compliant decoders. Decoders make no difference between normal,
1183 * inofficial and experimental, that is they always try to decode things
1184 * when they can unless they are explicitly asked to behave stupid
1185 * (=strictly conform to the specs)
1186 */
1187 int strict_std_compliance;
1188#define FF_COMPLIANCE_VERY_STRICT 2 ///< Strictly conform to a older more strict version of the spec or reference software.
1189#define FF_COMPLIANCE_STRICT 1 ///< Strictly conform to all the things in the spec no matter what consequences.
1190#define FF_COMPLIANCE_NORMAL 0
1191#define FF_COMPLIANCE_INOFFICIAL -1 ///< Allow inofficial extensions.
1192#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things.
1193
1194 /**
1195 * qscale offset between IP and B-frames
1196 * - encoding: Set by user.
1197 * - decoding: unused
1198 */
1199 float b_quant_offset;
1200
1201 /**
1202 * Error recognization; higher values will detect more errors but may
1203 * misdetect some more or less valid parts as errors.
1204 * - encoding: unused
1205 * - decoding: Set by user.
1206 */
1207 int error_recognition;
1208#define FF_ER_CAREFUL 1
1209#define FF_ER_COMPLIANT 2
1210#define FF_ER_AGGRESSIVE 3
1211#define FF_ER_VERY_AGGRESSIVE 4
1212
1213 /**
1214 * Called at the beginning of each frame to get a buffer for it.
1215 * If pic.reference is set then the frame will be read later by libavcodec.
1216 * avcodec_align_dimensions() should be used to find the required width and
1217 * height, as they normally need to be rounded up to the next multiple of 16.
1218 * - encoding: unused
1219 * - decoding: Set by libavcodec., user can override.
1220 */
1221 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1222
1223 /**
1224 * Called to release buffers which were allocated with get_buffer.
1225 * A released buffer can be reused in get_buffer().
1226 * pic.data[*] must be set to NULL.
1227 * - encoding: unused
1228 * - decoding: Set by libavcodec., user can override.
1229 */
1230 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1231
1232 /**
1233 * Size of the frame reordering buffer in the decoder.
1234 * For MPEG-2 it is 1 IPB or 0 low delay IP.
1235 * - encoding: Set by libavcodec.
1236 * - decoding: Set by libavcodec.
1237 */
1238 int has_b_frames;
1239
1240 /**
1241 * number of bytes per packet if constant and known or 0
1242 * Used by some WAV based audio codecs.
1243 */
1244 int block_align;
1245
1246 int parse_only; /* - decoding only: If true, only parsing is done
1247 (function avcodec_parse_frame()). The frame
1248 data is returned. Only MPEG codecs support this now. */
1249
1250 /**
1251 * 0-> h263 quant 1-> mpeg quant
1252 * - encoding: Set by user.
1253 * - decoding: unused
1254 */
1255 int mpeg_quant;
1256
1257 /**
1258 * pass1 encoding statistics output buffer
1259 * - encoding: Set by libavcodec.
1260 * - decoding: unused
1261 */
1262 char *stats_out;
1263
1264 /**
1265 * pass2 encoding statistics input buffer
1266 * Concatenated stuff from stats_out of pass1 should be placed here.
1267 * - encoding: Allocated/set/freed by user.
1268 * - decoding: unused
1269 */
1270 char *stats_in;
1271
1272 /**
1273 * ratecontrol qmin qmax limiting method
1274 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
1275 * - encoding: Set by user.
1276 * - decoding: unused
1277 */
1278 float rc_qsquish;
1279
1280 float rc_qmod_amp;
1281 int rc_qmod_freq;
1282
1283 /**
1284 * ratecontrol override, see RcOverride
1285 * - encoding: Allocated/set/freed by user.
1286 * - decoding: unused
1287 */
1288 RcOverride *rc_override;
1289 int rc_override_count;
1290
1291 /**
1292 * rate control equation
1293 * - encoding: Set by user
1294 * - decoding: unused
1295 */
1296 const char *rc_eq;
1297
1298 /**
1299 * maximum bitrate
1300 * - encoding: Set by user.
1301 * - decoding: unused
1302 */
1303 int rc_max_rate;
1304
1305 /**
1306 * minimum bitrate
1307 * - encoding: Set by user.
1308 * - decoding: unused
1309 */
1310 int rc_min_rate;
1311
1312 /**
1313 * decoder bitstream buffer size
1314 * - encoding: Set by user.
1315 * - decoding: unused
1316 */
1317 int rc_buffer_size;
1318 float rc_buffer_aggressivity;
1319
1320 /**
1321 * qscale factor between P and I-frames
1322 * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
1323 * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1324 * - encoding: Set by user.
1325 * - decoding: unused
1326 */
1327 float i_quant_factor;
1328
1329 /**
1330 * qscale offset between P and I-frames
1331 * - encoding: Set by user.
1332 * - decoding: unused
1333 */
1334 float i_quant_offset;
1335
1336 /**
1337 * initial complexity for pass1 ratecontrol
1338 * - encoding: Set by user.
1339 * - decoding: unused
1340 */
1341 float rc_initial_cplx;
1342
1343 /**
1344 * DCT algorithm, see FF_DCT_* below
1345 * - encoding: Set by user.
1346 * - decoding: unused
1347 */
1348 int dct_algo;
1349#define FF_DCT_AUTO 0
1350#define FF_DCT_FASTINT 1
1351#define FF_DCT_INT 2
1352#define FF_DCT_MMX 3
1353#define FF_DCT_MLIB 4
1354#define FF_DCT_ALTIVEC 5
1355#define FF_DCT_FAAN 6
1356
1357 /**
1358 * luminance masking (0-> disabled)
1359 * - encoding: Set by user.
1360 * - decoding: unused
1361 */
1362 float lumi_masking;
1363
1364 /**
1365 * temporary complexity masking (0-> disabled)
1366 * - encoding: Set by user.
1367 * - decoding: unused
1368 */
1369 float temporal_cplx_masking;
1370
1371 /**
1372 * spatial complexity masking (0-> disabled)
1373 * - encoding: Set by user.
1374 * - decoding: unused
1375 */
1376 float spatial_cplx_masking;
1377
1378 /**
1379 * p block masking (0-> disabled)
1380 * - encoding: Set by user.
1381 * - decoding: unused
1382 */
1383 float p_masking;
1384
1385 /**
1386 * darkness masking (0-> disabled)
1387 * - encoding: Set by user.
1388 * - decoding: unused
1389 */
1390 float dark_masking;
1391
1392 /**
1393 * IDCT algorithm, see FF_IDCT_* below.
1394 * - encoding: Set by user.
1395 * - decoding: Set by user.
1396 */
1397 int idct_algo;
1398#define FF_IDCT_AUTO 0
1399#define FF_IDCT_INT 1
1400#define FF_IDCT_SIMPLE 2
1401#define FF_IDCT_SIMPLEMMX 3
1402#define FF_IDCT_LIBMPEG2MMX 4
1403#define FF_IDCT_PS2 5
1404#define FF_IDCT_MLIB 6
1405#define FF_IDCT_ARM 7
1406#define FF_IDCT_ALTIVEC 8
1407#define FF_IDCT_SH4 9
1408#define FF_IDCT_SIMPLEARM 10
1409#define FF_IDCT_H264 11
1410#define FF_IDCT_VP3 12
1411#define FF_IDCT_IPP 13
1412#define FF_IDCT_XVIDMMX 14
1413#define FF_IDCT_CAVS 15
1414#define FF_IDCT_SIMPLEARMV5TE 16
1415#define FF_IDCT_SIMPLEARMV6 17
1416#define FF_IDCT_SIMPLEVIS 18
1417#define FF_IDCT_WMV2 19
1418#define FF_IDCT_FAAN 20
1419#define FF_IDCT_EA 21
1420#define FF_IDCT_SIMPLENEON 22
1421#define FF_IDCT_SIMPLEALPHA 23
1422
1423 /**
1424 * slice count
1425 * - encoding: Set by libavcodec.
1426 * - decoding: Set by user (or 0).
1427 */
1428 int slice_count;
1429 /**
1430 * slice offsets in the frame in bytes
1431 * - encoding: Set/allocated by libavcodec.
1432 * - decoding: Set/allocated by user (or NULL).
1433 */
1434 int *slice_offset;
1435
1436 /**
1437 * error concealment flags
1438 * - encoding: unused
1439 * - decoding: Set by user.
1440 */
1441 int error_concealment;
1442#define FF_EC_GUESS_MVS 1
1443#define FF_EC_DEBLOCK 2
1444
1445 /**
1446 * dsp_mask could be add used to disable unwanted CPU features
1447 * CPU features (i.e. MMX, SSE. ...)
1448 *
1449 * With the FORCE flag you may instead enable given CPU features.
1450 * (Dangerous: Usable in case of misdetection, improper usage however will
1451 * result into program crash.)
1452 */
1453 unsigned dsp_mask;
1454#define FF_MM_FORCE 0x80000000 /* Force usage of selected flags (OR) */
1455 /* lower 16 bits - CPU features */
1456#define FF_MM_MMX 0x0001 ///< standard MMX
1457#define FF_MM_3DNOW 0x0004 ///< AMD 3DNOW
1458#define FF_MM_MMXEXT 0x0002 ///< SSE integer functions or AMD MMX ext
1459#define FF_MM_SSE 0x0008 ///< SSE functions
1460#define FF_MM_SSE2 0x0010 ///< PIV SSE2 functions
1461#define FF_MM_3DNOWEXT 0x0020 ///< AMD 3DNowExt
1462#define FF_MM_SSE3 0x0040 ///< Prescott SSE3 functions
1463#define FF_MM_SSSE3 0x0080 ///< Conroe SSSE3 functions
1464#define FF_MM_IWMMXT 0x0100 ///< XScale IWMMXT
1465#define FF_MM_ALTIVEC 0x0001 ///< standard AltiVec
1466
1467 /**
1468 * bits per sample/pixel from the demuxer (needed for huffyuv).
1469 * - encoding: Set by libavcodec.
1470 * - decoding: Set by user.
1471 */
1472 int bits_per_coded_sample;
1473
1474 /**
1475 * prediction method (needed for huffyuv)
1476 * - encoding: Set by user.
1477 * - decoding: unused
1478 */
1479 int prediction_method;
1480#define FF_PRED_LEFT 0
1481#define FF_PRED_PLANE 1
1482#define FF_PRED_MEDIAN 2
1483
1484 /**
1485 * sample aspect ratio (0 if unknown)
1486 * That is the width of a pixel divided by the height of the pixel.
1487 * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
1488 * - encoding: Set by user.
1489 * - decoding: Set by libavcodec.
1490 */
1491 AVRational sample_aspect_ratio;
1492
1493 /**
1494 * the picture in the bitstream
1495 * - encoding: Set by libavcodec.
1496 * - decoding: Set by libavcodec.
1497 */
1498 AVFrame *coded_frame;
1499
1500 /**
1501 * debug
1502 * - encoding: Set by user.
1503 * - decoding: Set by user.
1504 */
1505 int debug;
1506#define FF_DEBUG_PICT_INFO 1
1507#define FF_DEBUG_RC 2
1508#define FF_DEBUG_BITSTREAM 4
1509#define FF_DEBUG_MB_TYPE 8
1510#define FF_DEBUG_QP 16
1511#define FF_DEBUG_MV 32
1512#define FF_DEBUG_DCT_COEFF 0x00000040
1513#define FF_DEBUG_SKIP 0x00000080
1514#define FF_DEBUG_STARTCODE 0x00000100
1515#define FF_DEBUG_PTS 0x00000200
1516#define FF_DEBUG_ER 0x00000400
1517#define FF_DEBUG_MMCO 0x00000800
1518#define FF_DEBUG_BUGS 0x00001000
1519#define FF_DEBUG_VIS_QP 0x00002000
1520#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1521#define FF_DEBUG_BUFFERS 0x00008000
1522
1523 /**
1524 * debug
1525 * - encoding: Set by user.
1526 * - decoding: Set by user.
1527 */
1528 int debug_mv;
1529#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1530#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1531#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1532
1533 /**
1534 * error
1535 * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
1536 * - decoding: unused
1537 */
1538 uint64_t error[4];
1539
1540 /**
1541 * minimum MB quantizer
1542 * - encoding: unused
1543 * - decoding: unused
1544 */
1545 int mb_qmin;
1546
1547 /**
1548 * maximum MB quantizer
1549 * - encoding: unused
1550 * - decoding: unused
1551 */
1552 int mb_qmax;
1553
1554 /**
1555 * motion estimation comparison function
1556 * - encoding: Set by user.
1557 * - decoding: unused
1558 */
1559 int me_cmp;
1560 /**
1561 * subpixel motion estimation comparison function
1562 * - encoding: Set by user.
1563 * - decoding: unused
1564 */
1565 int me_sub_cmp;
1566 /**
1567 * macroblock comparison function (not supported yet)
1568 * - encoding: Set by user.
1569 * - decoding: unused
1570 */
1571 int mb_cmp;
1572 /**
1573 * interlaced DCT comparison function
1574 * - encoding: Set by user.
1575 * - decoding: unused
1576 */
1577 int ildct_cmp;
1578#define FF_CMP_SAD 0
1579#define FF_CMP_SSE 1
1580#define FF_CMP_SATD 2
1581#define FF_CMP_DCT 3
1582#define FF_CMP_PSNR 4
1583#define FF_CMP_BIT 5
1584#define FF_CMP_RD 6
1585#define FF_CMP_ZERO 7
1586#define FF_CMP_VSAD 8
1587#define FF_CMP_VSSE 9
1588#define FF_CMP_NSSE 10
1589#define FF_CMP_W53 11
1590#define FF_CMP_W97 12
1591#define FF_CMP_DCTMAX 13
1592#define FF_CMP_DCT264 14
1593#define FF_CMP_CHROMA 256
1594
1595 /**
1596 * ME diamond size & shape
1597 * - encoding: Set by user.
1598 * - decoding: unused
1599 */
1600 int dia_size;
1601
1602 /**
1603 * amount of previous MV predictors (2a+1 x 2a+1 square)
1604 * - encoding: Set by user.
1605 * - decoding: unused
1606 */
1607 int last_predictor_count;
1608
1609 /**
1610 * prepass for motion estimation
1611 * - encoding: Set by user.
1612 * - decoding: unused
1613 */
1614 int pre_me;
1615
1616 /**
1617 * motion estimation prepass comparison function
1618 * - encoding: Set by user.
1619 * - decoding: unused
1620 */
1621 int me_pre_cmp;
1622
1623 /**
1624 * ME prepass diamond size & shape
1625 * - encoding: Set by user.
1626 * - decoding: unused
1627 */
1628 int pre_dia_size;
1629
1630 /**
1631 * subpel ME quality
1632 * - encoding: Set by user.
1633 * - decoding: unused
1634 */
1635 int me_subpel_quality;
1636
1637 /**
1638 * callback to negotiate the pixelFormat
1639 * @param fmt is the list of formats which are supported by the codec,
1640 * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
1641 * The first is always the native one.
1642 * @return the chosen format
1643 * - encoding: unused
1644 * - decoding: Set by user, if not set the native format will be chosen.
1645 */
1646 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1647
1648 /**
1649 * DTG active format information (additional aspect ratio
1650 * information only used in DVB MPEG-2 transport streams)
1651 * 0 if not set.
1652 *
1653 * - encoding: unused
1654 * - decoding: Set by decoder.
1655 */
1656 int dtg_active_format;
1657#define FF_DTG_AFD_SAME 8
1658#define FF_DTG_AFD_4_3 9
1659#define FF_DTG_AFD_16_9 10
1660#define FF_DTG_AFD_14_9 11
1661#define FF_DTG_AFD_4_3_SP_14_9 13
1662#define FF_DTG_AFD_16_9_SP_14_9 14
1663#define FF_DTG_AFD_SP_4_3 15
1664
1665 /**
1666 * maximum motion estimation search range in subpel units
1667 * If 0 then no limit.
1668 *
1669 * - encoding: Set by user.
1670 * - decoding: unused
1671 */
1672 int me_range;
1673
1674 /**
1675 * intra quantizer bias
1676 * - encoding: Set by user.
1677 * - decoding: unused
1678 */
1679 int intra_quant_bias;
1680#define FF_DEFAULT_QUANT_BIAS 999999
1681
1682 /**
1683 * inter quantizer bias
1684 * - encoding: Set by user.
1685 * - decoding: unused
1686 */
1687 int inter_quant_bias;
1688
1689 /**
1690 * color table ID
1691 * - encoding: unused
1692 * - decoding: Which clrtable should be used for 8bit RGB images.
1693 * Tables have to be stored somewhere. FIXME
1694 */
1695 int color_table_id;
1696
1697 /**
1698 * internal_buffer count
1699 * Don't touch, used by libavcodec default_get_buffer().
1700 */
1701 int internal_buffer_count;
1702
1703 /**
1704 * internal_buffers
1705 * Don't touch, used by libavcodec default_get_buffer().
1706 */
1707 void *internal_buffer;
1708
1709#define FF_LAMBDA_SHIFT 7
1710#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1711#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1712#define FF_LAMBDA_MAX (256*128-1)
1713
1714#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1715 /**
1716 * Global quality for codecs which cannot change it per frame.
1717 * This should be proportional to MPEG-1/2/4 qscale.
1718 * - encoding: Set by user.
1719 * - decoding: unused
1720 */
1721 int global_quality;
1722
1723#define FF_CODER_TYPE_VLC 0
1724#define FF_CODER_TYPE_AC 1
1725#define FF_CODER_TYPE_RAW 2
1726#define FF_CODER_TYPE_RLE 3
1727#define FF_CODER_TYPE_DEFLATE 4
1728 /**
1729 * coder type
1730 * - encoding: Set by user.
1731 * - decoding: unused
1732 */
1733 int coder_type;
1734
1735 /**
1736 * context model
1737 * - encoding: Set by user.
1738 * - decoding: unused
1739 */
1740 int context_model;
1741#if 0
1742 /**
1743 *
1744 * - encoding: unused
1745 * - decoding: Set by user.
1746 */
1747 uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1748#endif
1749
1750 /**
1751 * slice flags
1752 * - encoding: unused
1753 * - decoding: Set by user.
1754 */
1755 int slice_flags;
1756#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1757#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1758#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1759
1760 /**
1761 * XVideo Motion Acceleration
1762 * - encoding: forbidden
1763 * - decoding: set by decoder
1764 */
1765 int xvmc_acceleration;
1766
1767 /**
1768 * macroblock decision mode
1769 * - encoding: Set by user.
1770 * - decoding: unused
1771 */
1772 int mb_decision;
1773#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1774#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1775#define FF_MB_DECISION_RD 2 ///< rate distortion
1776
1777 /**
1778 * custom intra quantization matrix
1779 * - encoding: Set by user, can be NULL.
1780 * - decoding: Set by libavcodec.
1781 */
1782 uint16_t *intra_matrix;
1783
1784 /**
1785 * custom inter quantization matrix
1786 * - encoding: Set by user, can be NULL.
1787 * - decoding: Set by libavcodec.
1788 */
1789 uint16_t *inter_matrix;
1790
1791 /**
1792 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1793 * This is used to work around some encoder bugs.
1794 * - encoding: unused
1795 * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
1796 */
1797 unsigned int stream_codec_tag;
1798
1799 /**
1800 * scene change detection threshold
1801 * 0 is default, larger means fewer detected scene changes.
1802 * - encoding: Set by user.
1803 * - decoding: unused
1804 */
1805 int scenechange_threshold;
1806
1807 /**
1808 * minimum Lagrange multipler
1809 * - encoding: Set by user.
1810 * - decoding: unused
1811 */
1812 int lmin;
1813
1814 /**
1815 * maximum Lagrange multipler
1816 * - encoding: Set by user.
1817 * - decoding: unused
1818 */
1819 int lmax;
1820
1821 /**
1822 * palette control structure
1823 * - encoding: ??? (no palette-enabled encoder yet)
1824 * - decoding: Set by user.
1825 */
1826 struct AVPaletteControl *palctrl;
1827
1828 /**
1829 * noise reduction strength
1830 * - encoding: Set by user.
1831 * - decoding: unused
1832 */
1833 int noise_reduction;
1834
1835 /**
1836 * Called at the beginning of a frame to get cr buffer for it.
1837 * Buffer type (size, hints) must be the same. libavcodec won't check it.
1838 * libavcodec will pass previous buffer in pic, function should return
1839 * same buffer or new buffer with old frame "painted" into it.
1840 * If pic.data[0] == NULL must behave like get_buffer().
1841 * - encoding: unused
1842 * - decoding: Set by libavcodec., user can override
1843 */
1844 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1845
1846 /**
1847 * Number of bits which should be loaded into the rc buffer before decoding starts.
1848 * - encoding: Set by user.
1849 * - decoding: unused
1850 */
1851 int rc_initial_buffer_occupancy;
1852
1853 /**
1854 *
1855 * - encoding: Set by user.
1856 * - decoding: unused
1857 */
1858 int inter_threshold;
1859
1860 /**
1861 * CODEC_FLAG2_*
1862 * - encoding: Set by user.
1863 * - decoding: Set by user.
1864 */
1865 int flags2;
1866
1867 /**
1868 * Simulates errors in the bitstream to test error concealment.
1869 * - encoding: Set by user.
1870 * - decoding: unused
1871 */
1872 int error_rate;
1873
1874 /**
1875 * MP3 antialias algorithm, see FF_AA_* below.
1876 * - encoding: unused
1877 * - decoding: Set by user.
1878 */
1879 int antialias_algo;
1880#define FF_AA_AUTO 0
1881#define FF_AA_FASTINT 1 //not implemented yet
1882#define FF_AA_INT 2
1883#define FF_AA_FLOAT 3
1884 /**
1885 * quantizer noise shaping
1886 * - encoding: Set by user.
1887 * - decoding: unused
1888 */
1889 int quantizer_noise_shaping;
1890
1891 /**
1892 * thread count
1893 * is used to decide how many independent tasks should be passed to execute()
1894 * - encoding: Set by user.
1895 * - decoding: Set by user.
1896 */
1897 int thread_count;
1898
1899 /**
1900 * The codec may call this to execute several independent things.
1901 * It will return only after finishing all tasks.
1902 * The user may replace this with some multithreaded implementation,
1903 * the default implementation will execute the parts serially.
1904 * @param count the number of things to execute
1905 * - encoding: Set by libavcodec, user can override.
1906 * - decoding: Set by libavcodec, user can override.
1907 */
1908 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size);
1909
1910 /**
1911 * thread opaque
1912 * Can be used by execute() to store some per AVCodecContext stuff.
1913 * - encoding: set by execute()
1914 * - decoding: set by execute()
1915 */
1916 void *thread_opaque;
1917
1918 /**
1919 * Motion estimation threshold below which no motion estimation is
1920 * performed, but instead the user specified motion vectors are used.
1921 *
1922 * - encoding: Set by user.
1923 * - decoding: unused
1924 */
1925 int me_threshold;
1926
1927 /**
1928 * Macroblock threshold below which the user specified macroblock types will be used.
1929 * - encoding: Set by user.
1930 * - decoding: unused
1931 */
1932 int mb_threshold;
1933
1934 /**
1935 * precision of the intra DC coefficient - 8
1936 * - encoding: Set by user.
1937 * - decoding: unused
1938 */
1939 int intra_dc_precision;
1940
1941 /**
1942 * noise vs. sse weight for the nsse comparsion function
1943 * - encoding: Set by user.
1944 * - decoding: unused
1945 */
1946 int nsse_weight;
1947
1948 /**
1949 * Number of macroblock rows at the top which are skipped.
1950 * - encoding: unused
1951 * - decoding: Set by user.
1952 */
1953 int skip_top;
1954
1955 /**
1956 * Number of macroblock rows at the bottom which are skipped.
1957 * - encoding: unused
1958 * - decoding: Set by user.
1959 */
1960 int skip_bottom;
1961
1962 /**
1963 * profile
1964 * - encoding: Set by user.
1965 * - decoding: Set by libavcodec.
1966 */
1967 int profile;
1968#define FF_PROFILE_UNKNOWN -99
1969#define FF_PROFILE_AAC_MAIN 0
1970#define FF_PROFILE_AAC_LOW 1
1971#define FF_PROFILE_AAC_SSR 2
1972#define FF_PROFILE_AAC_LTP 3
1973
1974 /**
1975 * level
1976 * - encoding: Set by user.
1977 * - decoding: Set by libavcodec.
1978 */
1979 int level;
1980#define FF_LEVEL_UNKNOWN -99
1981
1982 /**
1983 * low resolution decoding, 1-> 1/2 size, 2->1/4 size
1984 * - encoding: unused
1985 * - decoding: Set by user.
1986 */
1987 int lowres;
1988
1989 /**
1990 * Bitstream width / height, may be different from width/height if lowres
1991 * or other things are used.
1992 * - encoding: unused
1993 * - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
1994 */
1995 int coded_width, coded_height;
1996
1997 /**
1998 * frame skip threshold
1999 * - encoding: Set by user.
2000 * - decoding: unused
2001 */
2002 int frame_skip_threshold;
2003
2004 /**
2005 * frame skip factor
2006 * - encoding: Set by user.
2007 * - decoding: unused
2008 */
2009 int frame_skip_factor;
2010
2011 /**
2012 * frame skip exponent
2013 * - encoding: Set by user.
2014 * - decoding: unused
2015 */
2016 int frame_skip_exp;
2017
2018 /**
2019 * frame skip comparison function
2020 * - encoding: Set by user.
2021 * - decoding: unused
2022 */
2023 int frame_skip_cmp;
2024
2025 /**
2026 * Border processing masking, raises the quantizer for mbs on the borders
2027 * of the picture.
2028 * - encoding: Set by user.
2029 * - decoding: unused
2030 */
2031 float border_masking;
2032
2033 /**
2034 * minimum MB lagrange multipler
2035 * - encoding: Set by user.
2036 * - decoding: unused
2037 */
2038 int mb_lmin;
2039
2040 /**
2041 * maximum MB lagrange multipler
2042 * - encoding: Set by user.
2043 * - decoding: unused
2044 */
2045 int mb_lmax;
2046
2047 /**
2048 *
2049 * - encoding: Set by user.
2050 * - decoding: unused
2051 */
2052 int me_penalty_compensation;
2053
2054 /**
2055 *
2056 * - encoding: unused
2057 * - decoding: Set by user.
2058 */
2059 enum AVDiscard skip_loop_filter;
2060
2061 /**
2062 *
2063 * - encoding: unused
2064 * - decoding: Set by user.
2065 */
2066 enum AVDiscard skip_idct;
2067
2068 /**
2069 *
2070 * - encoding: unused
2071 * - decoding: Set by user.
2072 */
2073 enum AVDiscard skip_frame;
2074
2075 /**
2076 *
2077 * - encoding: Set by user.
2078 * - decoding: unused
2079 */
2080 int bidir_refine;
2081
2082 /**
2083 *
2084 * - encoding: Set by user.
2085 * - decoding: unused
2086 */
2087 int brd_scale;
2088
2089 /**
2090 * constant rate factor - quality-based VBR - values ~correspond to qps
2091 * - encoding: Set by user.
2092 * - decoding: unused
2093 */
2094 float crf;
2095
2096 /**
2097 * constant quantization parameter rate control method
2098 * - encoding: Set by user.
2099 * - decoding: unused
2100 */
2101 int cqp;
2102
2103 /**
2104 * minimum GOP size
2105 * - encoding: Set by user.
2106 * - decoding: unused
2107 */
2108 int keyint_min;
2109
2110 /**
2111 * number of reference frames
2112 * - encoding: Set by user.
2113 * - decoding: Set by lavc.
2114 */
2115 int refs;
2116
2117 /**
2118 * chroma qp offset from luma
2119 * - encoding: Set by user.
2120 * - decoding: unused
2121 */
2122 int chromaoffset;
2123
2124 /**
2125 * Influences how often B-frames are used.
2126 * - encoding: Set by user.
2127 * - decoding: unused
2128 */
2129 int bframebias;
2130
2131 /**
2132 * trellis RD quantization
2133 * - encoding: Set by user.
2134 * - decoding: unused
2135 */
2136 int trellis;
2137
2138 /**
2139 * Reduce fluctuations in qp (before curve compression).
2140 * - encoding: Set by user.
2141 * - decoding: unused
2142 */
2143 float complexityblur;
2144
2145 /**
2146 * in-loop deblocking filter alphac0 parameter
2147 * alpha is in the range -6...6
2148 * - encoding: Set by user.
2149 * - decoding: unused
2150 */
2151 int deblockalpha;
2152
2153 /**
2154 * in-loop deblocking filter beta parameter
2155 * beta is in the range -6...6
2156 * - encoding: Set by user.
2157 * - decoding: unused
2158 */
2159 int deblockbeta;
2160
2161 /**
2162 * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
2163 * - encoding: Set by user.
2164 * - decoding: unused
2165 */
2166 int partitions;
2167#define X264_PART_I4X4 0x001 /* Analyze i4x4 */
2168#define X264_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */
2169#define X264_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */
2170#define X264_PART_P4X4 0x020 /* Analyze p8x4, p4x8, p4x4 */
2171#define X264_PART_B8X8 0x100 /* Analyze b16x8, b8x16 and b8x8 */
2172
2173 /**
2174 * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto)
2175 * - encoding: Set by user.
2176 * - decoding: unused
2177 */
2178 int directpred;
2179
2180 /**
2181 * Audio cutoff bandwidth (0 means "automatic")
2182 * - encoding: Set by user.
2183 * - decoding: unused
2184 */
2185 int cutoff;
2186
2187 /**
2188 * Multiplied by qscale for each frame and added to scene_change_score.
2189 * - encoding: Set by user.
2190 * - decoding: unused
2191 */
2192 int scenechange_factor;
2193
2194 /**
2195 *
2196 * Note: Value depends upon the compare function used for fullpel ME.
2197 * - encoding: Set by user.
2198 * - decoding: unused
2199 */
2200 int mv0_threshold;
2201
2202 /**
2203 * Adjusts sensitivity of b_frame_strategy 1.
2204 * - encoding: Set by user.
2205 * - decoding: unused
2206 */
2207 int b_sensitivity;
2208
2209 /**
2210 * - encoding: Set by user.
2211 * - decoding: unused
2212 */
2213 int compression_level;
2214#define FF_COMPRESSION_DEFAULT -1
2215
2216 /**
2217 * Sets whether to use LPC mode - used by FLAC encoder.
2218 * - encoding: Set by user.
2219 * - decoding: unused
2220 */
2221 int use_lpc;
2222
2223 /**
2224 * LPC coefficient precision - used by FLAC encoder
2225 * - encoding: Set by user.
2226 * - decoding: unused
2227 */
2228 int lpc_coeff_precision;
2229
2230 /**
2231 * - encoding: Set by user.
2232 * - decoding: unused
2233 */
2234 int min_prediction_order;
2235
2236 /**
2237 * - encoding: Set by user.
2238 * - decoding: unused
2239 */
2240 int max_prediction_order;
2241
2242 /**
2243 * search method for selecting prediction order
2244 * - encoding: Set by user.
2245 * - decoding: unused
2246 */
2247 int prediction_order_method;
2248
2249 /**
2250 * - encoding: Set by user.
2251 * - decoding: unused
2252 */
2253 int min_partition_order;
2254
2255 /**
2256 * - encoding: Set by user.
2257 * - decoding: unused
2258 */
2259 int max_partition_order;
2260
2261 /**
2262 * GOP timecode frame start number, in non drop frame format
2263 * - encoding: Set by user.
2264 * - decoding: unused
2265 */
2266 int64_t timecode_frame_start;
2267
2268#if LIBAVCODEC_VERSION_MAJOR < 53
2269 /**
2270 * Decoder should decode to this many channels if it can (0 for default)
2271 * - encoding: unused
2272 * - decoding: Set by user.
2273 * @deprecated Deprecated in favor of request_channel_layout.
2274 */
2275 int request_channels;
2276#endif
2277
2278 /**
2279 * Percentage of dynamic range compression to be applied by the decoder.
2280 * The default value is 1.0, corresponding to full compression.
2281 * - encoding: unused
2282 * - decoding: Set by user.
2283 */
2284 float drc_scale;
2285
2286 /**
2287 * opaque 64bit number (generally a PTS) that will be reordered and
2288 * output in AVFrame.reordered_opaque
2289 * - encoding: unused
2290 * - decoding: Set by user.
2291 */
2292 int64_t reordered_opaque;
2293
2294 /**
2295 * Bits per sample/pixel of internal libavcodec pixel/sample format.
2296 * This field is applicable only when sample_fmt is SAMPLE_FMT_S32.
2297 * - encoding: set by user.
2298 * - decoding: set by libavcodec.
2299 */
2300 int bits_per_raw_sample;
2301
2302 /**
2303 * Audio channel layout.
2304 * - encoding: set by user.
2305 * - decoding: set by libavcodec.
2306 */
2307 int64_t channel_layout;
2308
2309 /**
2310 * Request decoder to use this channel layout if it can (0 for default)
2311 * - encoding: unused
2312 * - decoding: Set by user.
2313 */
2314 int64_t request_channel_layout;
2315
2316 /**
2317 * Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow.
2318 * - encoding: Set by user.
2319 * - decoding: unused.
2320 */
2321 float rc_max_available_vbv_use;
2322
2323 /**
2324 * Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow.
2325 * - encoding: Set by user.
2326 * - decoding: unused.
2327 */
2328 float rc_min_vbv_overflow_use;
2329
2330 /**
2331 * Hardware accelerator in use
2332 * - encoding: unused.
2333 * - decoding: Set by libavcodec
2334 */
2335 struct AVHWAccel *hwaccel;
2336
2337 /**
2338 * For some codecs, the time base is closer to the field rate than the frame rate.
2339 * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration
2340 * if no telecine is used ...
2341 *
2342 * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2.
2343 */
2344 int ticks_per_frame;
2345
2346 /**
2347 * Hardware accelerator context.
2348 * For some hardware accelerators, a global context needs to be
2349 * provided by the user. In that case, this holds display-dependent
2350 * data FFmpeg cannot instantiate itself. Please refer to the
2351 * FFmpeg HW accelerator documentation to know how to fill this
2352 * is. e.g. for VA API, this is a struct vaapi_context.
2353 * - encoding: unused
2354 * - decoding: Set by user
2355 */
2356 void *hwaccel_context;
2357} AVCodecContext;
2358
2359/**
2360 * AVCodec.
2361 */
2362typedef struct AVCodec {
2363 /**
2364 * Name of the codec implementation.
2365 * The name is globally unique among encoders and among decoders (but an
2366 * encoder and a decoder can share the same name).
2367 * This is the primary way to find a codec from the user perspective.
2368 */
2369 const char *name;
2370 enum CodecType type;
2371 enum CodecID id;
2372 int priv_data_size;
2373 int (*init)(AVCodecContext *);
2374 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2375 int (*close)(AVCodecContext *);
2376 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2377 const uint8_t *buf, int buf_size);
2378 /**
2379 * Codec capabilities.
2380 * see CODEC_CAP_*
2381 */
2382 int capabilities;
2383 struct AVCodec *next;
2384 /**
2385 * Flush buffers.
2386 * Will be called when seeking
2387 */
2388 void (*flush)(AVCodecContext *);
2389 const AVRational *supported_framerates; ///< array of supported framerates, or NULL if any, array is terminated by {0,0}
2390 const enum PixelFormat *pix_fmts; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1
2391 /**
2392 * Descriptive name for the codec, meant to be more human readable than \p name.
2393 * You \e should use the NULL_IF_CONFIG_SMALL() macro to define it.
2394 */
2395 const char *long_name;
2396 const int *supported_samplerates; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0
2397 const enum SampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1
2398 const int64_t *channel_layouts; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0
2399} AVCodec;
2400
2401/**
2402 * AVHWAccel.
2403 */
2404typedef struct AVHWAccel {
2405 /**
2406 * Name of the hardware accelerated codec.
2407 * The name is globally unique among encoders and among decoders (but an
2408 * encoder and a decoder can share the same name).
2409 */
2410 const char *name;
2411
2412 /**
2413 * Type of codec implemented by the hardware accelerator.
2414 *
2415 * See CODEC_TYPE_xxx
2416 */
2417 enum CodecType type;
2418
2419 /**
2420 * Codec implemented by the hardware accelerator.
2421 *
2422 * See CODEC_ID_xxx
2423 */
2424 enum CodecID id;
2425
2426 /**
2427 * Supported pixel format.
2428 *
2429 * Only hardware accelerated formats are supported here.
2430 */
2431 enum PixelFormat pix_fmt;
2432
2433 /**
2434 * Hardware accelerated codec capabilities.
2435 * see FF_HWACCEL_CODEC_CAP_*
2436 */
2437 int capabilities;
2438
2439 struct AVHWAccel *next;
2440
2441 /**
2442 * Called at the beginning of each frame or field picture.
2443 *
2444 * Meaningful frame information (codec specific) is guaranteed to
2445 * be parsed at this point. This function is mandatory.
2446 *
2447 * Note that \p buf can be NULL along with \p buf_size set to 0.
2448 * Otherwise, this means the whole frame is available at this point.
2449 *
2450 * @param avctx the codec context
2451 * @param buf the frame data buffer base
2452 * @param buf_size the size of the frame in bytes
2453 * @return zero if successful, a negative value otherwise
2454 */
2455 int (*start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
2456
2457 /**
2458 * Callback for each slice.
2459 *
2460 * Meaningful slice information (codec specific) is guaranteed to
2461 * be parsed at this point. This function is mandatory.
2462 *
2463 * @param avctx the codec context
2464 * @param buf the slice data buffer base
2465 * @param buf_size the size of the slice in bytes
2466 * @return zero if successful, a negative value otherwise
2467 */
2468 int (*decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
2469
2470 /**
2471 * Called at the end of each frame or field picture.
2472 *
2473 * The whole picture is parsed at this point and can now be sent
2474 * to the hardware accelerator. This function is mandatory.
2475 *
2476 * @param avctx the codec context
2477 * @return zero if successful, a negative value otherwise
2478 */
2479 int (*end_frame)(AVCodecContext *avctx);
2480
2481 /**
2482 * Size of HW accelerator private data.
2483 *
2484 * Private data is allocated with av_mallocz() before
2485 * AVCodecContext.get_buffer() and deallocated after
2486 * AVCodecContext.release_buffer().
2487 */
2488 int priv_data_size;
2489} AVHWAccel;
2490
2491/**
2492 * four components are given, that's all.
2493 * the last component is alpha
2494 */
2495typedef struct AVPicture {
2496 uint8_t *data[4];
2497 int linesize[4]; ///< number of bytes per line
2498} AVPicture;
2499
2500/**
2501 * AVPaletteControl
2502 * This structure defines a method for communicating palette changes
2503 * between and demuxer and a decoder.
2504 *
2505 * @deprecated Use AVPacket to send palette changes instead.
2506 * This is totally broken.
2507 */
2508#define AVPALETTE_SIZE 1024
2509#define AVPALETTE_COUNT 256
2510typedef struct AVPaletteControl {
2511
2512 /* Demuxer sets this to 1 to indicate the palette has changed;
2513 * decoder resets to 0. */
2514 int palette_changed;
2515
2516 /* 4-byte ARGB palette entries, stored in native byte order; note that
2517 * the individual palette components should be on a 8-bit scale; if
2518 * the palette data comes from an IBM VGA native format, the component
2519 * data is probably 6 bits in size and needs to be scaled. */
2520 unsigned int palette[AVPALETTE_COUNT];
2521
2522} AVPaletteControl attribute_deprecated;
2523
2524enum AVSubtitleType {
2525 SUBTITLE_NONE,
2526
2527 SUBTITLE_BITMAP, ///< A bitmap, pict will be set
2528
2529 /**
2530 * Plain text, the text field must be set by the decoder and is
2531 * authoritative. ass and pict fields may contain approximations.
2532 */
2533 SUBTITLE_TEXT,
2534
2535 /**
2536 * Formatted text, the ass field must be set by the decoder and is
2537 * authoritative. pict and text fields may contain approximations.
2538 */
2539 SUBTITLE_ASS,
2540};
2541
2542typedef struct AVSubtitleRect {
2543 int x; ///< top left corner of pict, undefined when pict is not set
2544 int y; ///< top left corner of pict, undefined when pict is not set
2545 int w; ///< width of pict, undefined when pict is not set
2546 int h; ///< height of pict, undefined when pict is not set
2547 int nb_colors; ///< number of colors in pict, undefined when pict is not set
2548
2549 /**
2550 * data+linesize for the bitmap of this subtitle.
2551 * can be set for text/ass as well once they where rendered
2552 */
2553 AVPicture pict;
2554 enum AVSubtitleType type;
2555
2556 char *text; ///< 0 terminated plain UTF-8 text
2557
2558 /**
2559 * 0 terminated ASS/SSA compatible event line.
2560 * The pressentation of this is unaffected by the other values in this
2561 * struct.
2562 */
2563 char *ass;
2564} AVSubtitleRect;
2565
2566typedef struct AVSubtitle {
2567 uint16_t format; /* 0 = graphics */
2568 uint32_t start_display_time; /* relative to packet pts, in ms */
2569 uint32_t end_display_time; /* relative to packet pts, in ms */
2570 unsigned num_rects;
2571 AVSubtitleRect **rects;
2572} AVSubtitle;
2573
2574
2575/* resample.c */
2576
2577struct ReSampleContext;
2578struct AVResampleContext;
2579
2580typedef struct ReSampleContext ReSampleContext;
2581
2582#if LIBAVCODEC_VERSION_MAJOR < 53
2583/**
2584 * @deprecated Use av_audio_resample_init() instead.
2585 */
2586attribute_deprecated ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2587 int output_rate, int input_rate);
2588#endif
2589/**
2590 * Initializes audio resampling context
2591 *
2592 * @param output_channels number of output channels
2593 * @param input_channels number of input channels
2594 * @param output_rate output sample rate
2595 * @param input_rate input sample rate
2596 * @param sample_fmt_out requested output sample format
2597 * @param sample_fmt_in input sample format
2598 * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq
2599 * @param log2_phase_count log2 of the number of entries in the polyphase filterbank
2600 * @param linear If 1 then the used FIR filter will be linearly interpolated
2601 between the 2 closest, if 0 the closest will be used
2602 * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate
2603 * @return allocated ReSampleContext, NULL if error occured
2604 */
2605ReSampleContext *av_audio_resample_init(int output_channels, int input_channels,
2606 int output_rate, int input_rate,
2607 enum SampleFormat sample_fmt_out,
2608 enum SampleFormat sample_fmt_in,
2609 int filter_length, int log2_phase_count,
2610 int linear, double cutoff);
2611
2612int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2613void audio_resample_close(ReSampleContext *s);
2614
2615
2616/**
2617 * Initializes an audio resampler.
2618 * Note, if either rate is not an integer then simply scale both rates up so they are.
2619 * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq
2620 * @param log2_phase_count log2 of the number of entries in the polyphase filterbank
2621 * @param linear If 1 then the used FIR filter will be linearly interpolated
2622 between the 2 closest, if 0 the closest will be used
2623 * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate
2624 */
2625struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2626
2627/**
2628 * resamples.
2629 * @param src an array of unconsumed samples
2630 * @param consumed the number of samples of src which have been consumed are returned here
2631 * @param src_size the number of unconsumed samples available
2632 * @param dst_size the amount of space in samples available in dst
2633 * @param update_ctx If this is 0 then the context will not be modified, that way several channels can be resampled with the same context.
2634 * @return the number of samples written in dst or -1 if an error occurred
2635 */
2636int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2637
2638
2639/**
2640 * Compensates samplerate/timestamp drift. The compensation is done by changing
2641 * the resampler parameters, so no audible clicks or similar distortions occur
2642 * @param compensation_distance distance in output samples over which the compensation should be performed
2643 * @param sample_delta number of output samples which should be output less
2644 *
2645 * example: av_resample_compensate(c, 10, 500)
2646 * here instead of 510 samples only 500 samples would be output
2647 *
2648 * note, due to rounding the actual compensation might be slightly different,
2649 * especially if the compensation_distance is large and the in_rate used during init is small
2650 */
2651void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2652void av_resample_close(struct AVResampleContext *c);
2653
2654/**
2655 * Allocate memory for a picture. Call avpicture_free to free it.
2656 *
2657 * @param picture the picture to be filled in
2658 * @param pix_fmt the format of the picture
2659 * @param width the width of the picture
2660 * @param height the height of the picture
2661 * @return zero if successful, a negative value if not
2662 */
2663int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2664
2665/**
2666 * Free a picture previously allocated by avpicture_alloc().
2667 *
2668 * @param picture the AVPicture to be freed
2669 */
2670void avpicture_free(AVPicture *picture);
2671
2672/**
2673 * Fill in the AVPicture fields.
2674 * The fields of the given AVPicture are filled in by using the 'ptr' address
2675 * which points to the image data buffer. Depending on the specified picture
2676 * format, one or multiple image data pointers and line sizes will be set.
2677 * If a planar format is specified, several pointers will be set pointing to
2678 * the different picture planes and the line sizes of the different planes
2679 * will be stored in the lines_sizes array.
2680 *
2681 * @param picture AVPicture whose fields are to be filled in
2682 * @param ptr Buffer which will contain or contains the actual image data
2683 * @param pix_fmt The format in which the picture data is stored.
2684 * @param width the width of the image in pixels
2685 * @param height the height of the image in pixels
2686 * @return size of the image data in bytes
2687 */
2688int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2689 int pix_fmt, int width, int height);
2690int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2691 unsigned char *dest, int dest_size);
2692
2693/**
2694 * Calculate the size in bytes that a picture of the given width and height
2695 * would occupy if stored in the given picture format.
2696 *
2697 * @param pix_fmt the given picture format
2698 * @param width the width of the image
2699 * @param height the height of the image
2700 * @return Image data size in bytes
2701 */
2702int avpicture_get_size(int pix_fmt, int width, int height);
2703void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2704const char *avcodec_get_pix_fmt_name(int pix_fmt);
2705void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2706enum PixelFormat avcodec_get_pix_fmt(const char* name);
2707unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2708
2709#define FF_LOSS_RESOLUTION 0x0001 /**< loss due to resolution change */
2710#define FF_LOSS_DEPTH 0x0002 /**< loss due to color depth change */
2711#define FF_LOSS_COLORSPACE 0x0004 /**< loss due to color space conversion */
2712#define FF_LOSS_ALPHA 0x0008 /**< loss of alpha bits */
2713#define FF_LOSS_COLORQUANT 0x0010 /**< loss due to color quantization */
2714#define FF_LOSS_CHROMA 0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */
2715
2716/**
2717 * Computes what kind of losses will occur when converting from one specific
2718 * pixel format to another.
2719 * When converting from one pixel format to another, information loss may occur.
2720 * For example, when converting from RGB24 to GRAY, the color information will
2721 * be lost. Similarly, other losses occur when converting from some formats to
2722 * other formats. These losses can involve loss of chroma, but also loss of
2723 * resolution, loss of color depth, loss due to the color space conversion, loss
2724 * of the alpha bits or loss due to color quantization.
2725 * avcodec_get_fix_fmt_loss() informs you about the various types of losses
2726 * which will occur when converting from one pixel format to another.
2727 *
2728 * @param[in] dst_pix_fmt destination pixel format
2729 * @param[in] src_pix_fmt source pixel format
2730 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
2731 * @return Combination of flags informing you what kind of losses will occur.
2732 */
2733int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2734 int has_alpha);
2735
2736/**
2737 * Finds the best pixel format to convert to given a certain source pixel
2738 * format. When converting from one pixel format to another, information loss
2739 * may occur. For example, when converting from RGB24 to GRAY, the color
2740 * information will be lost. Similarly, other losses occur when converting from
2741 * some formats to other formats. avcodec_find_best_pix_fmt() searches which of
2742 * the given pixel formats should be used to suffer the least amount of loss.
2743 * The pixel formats from which it chooses one, are determined by the
2744 * \p pix_fmt_mask parameter.
2745 *
2746 * @code
2747 * src_pix_fmt = PIX_FMT_YUV420P;
2748 * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24);
2749 * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss);
2750 * @endcode
2751 *
2752 * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from
2753 * @param[in] src_pix_fmt source pixel format
2754 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
2755 * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
2756 * @return The best pixel format to convert to or -1 if none was found.
2757 */
2758int avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, int src_pix_fmt,
2759 int has_alpha, int *loss_ptr);
2760
2761
2762/**
2763 * Print in buf the string corresponding to the pixel format with
2764 * number pix_fmt, or an header if pix_fmt is negative.
2765 *
2766 * @param[in] buf the buffer where to write the string
2767 * @param[in] buf_size the size of buf
2768 * @param[in] pix_fmt the number of the pixel format to print the corresponding info string, or
2769 * a negative value to print the corresponding header.
2770 * Meaningful values for obtaining a pixel format info vary from 0 to PIX_FMT_NB -1.
2771 */
2772void avcodec_pix_fmt_string (char *buf, int buf_size, int pix_fmt);
2773
2774#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2775#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2776
2777/**
2778 * Tell if an image really has transparent alpha values.
2779 * @return ored mask of FF_ALPHA_xxx constants
2780 */
2781int img_get_alpha_info(const AVPicture *src,
2782 int pix_fmt, int width, int height);
2783
2784/* deinterlace a picture */
2785/* deinterlace - if not supported return -1 */
2786int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2787 int pix_fmt, int width, int height);
2788
2789/* external high level API */
2790
2791/**
2792 * If c is NULL, returns the first registered codec,
2793 * if c is non-NULL, returns the next registered codec after c,
2794 * or NULL if c is the last one.
2795 */
2796AVCodec *av_codec_next(AVCodec *c);
2797
2798/**
2799 * Returns the LIBAVCODEC_VERSION_INT constant.
2800 */
2801unsigned avcodec_version(void);
2802
2803/**
2804 * Initializes libavcodec.
2805 *
2806 * @warning This function \e must be called before any other libavcodec
2807 * function.
2808 */
2809void avcodec_init(void);
2810
2811#if LIBAVCODEC_VERSION_MAJOR < 53
2812/**
2813 * @deprecated Deprecated in favor of avcodec_register().
2814 */
2815attribute_deprecated void register_avcodec(AVCodec *codec);
2816#endif
2817
2818/**
2819 * Register the codec \p codec and initialize libavcodec.
2820 *
2821 * @see avcodec_init()
2822 */
2823void avcodec_register(AVCodec *codec);
2824
2825/**
2826 * Finds a registered encoder with a matching codec ID.
2827 *
2828 * @param id CodecID of the requested encoder
2829 * @return An encoder if one was found, NULL otherwise.
2830 */
2831AVCodec *avcodec_find_encoder(enum CodecID id);
2832
2833/**
2834 * Finds a registered encoder with the specified name.
2835 *
2836 * @param name name of the requested encoder
2837 * @return An encoder if one was found, NULL otherwise.
2838 */
2839AVCodec *avcodec_find_encoder_by_name(const char *name);
2840
2841/**
2842 * Finds a registered decoder with a matching codec ID.
2843 *
2844 * @param id CodecID of the requested decoder
2845 * @return A decoder if one was found, NULL otherwise.
2846 */
2847AVCodec *avcodec_find_decoder(enum CodecID id);
2848
2849/**
2850 * Finds a registered decoder with the specified name.
2851 *
2852 * @param name name of the requested decoder
2853 * @return A decoder if one was found, NULL otherwise.
2854 */
2855AVCodec *avcodec_find_decoder_by_name(const char *name);
2856void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2857
2858/**
2859 * Sets the fields of the given AVCodecContext to default values.
2860 *
2861 * @param s The AVCodecContext of which the fields should be set to default values.
2862 */
2863void avcodec_get_context_defaults(AVCodecContext *s);
2864
2865/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
2866 * we WILL change its arguments and name a few times! */
2867void avcodec_get_context_defaults2(AVCodecContext *s, enum CodecType);
2868
2869/**
2870 * Allocates an AVCodecContext and sets its fields to default values. The
2871 * resulting struct can be deallocated by simply calling av_free().
2872 *
2873 * @return An AVCodecContext filled with default values or NULL on failure.
2874 * @see avcodec_get_context_defaults
2875 */
2876AVCodecContext *avcodec_alloc_context(void);
2877
2878/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
2879 * we WILL change its arguments and name a few times! */
2880AVCodecContext *avcodec_alloc_context2(enum CodecType);
2881
2882/**
2883 * Sets the fields of the given AVFrame to default values.
2884 *
2885 * @param pic The AVFrame of which the fields should be set to default values.
2886 */
2887void avcodec_get_frame_defaults(AVFrame *pic);
2888
2889/**
2890 * Allocates an AVFrame and sets its fields to default values. The resulting
2891 * struct can be deallocated by simply calling av_free().
2892 *
2893 * @return An AVFrame filled with default values or NULL on failure.
2894 * @see avcodec_get_frame_defaults
2895 */
2896AVFrame *avcodec_alloc_frame(void);
2897
2898int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2899void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2900int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2901void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2902
2903/**
2904 * Checks if the given dimension of a picture is valid, meaning that all
2905 * bytes of the picture can be addressed with a signed int.
2906 *
2907 * @param[in] w Width of the picture.
2908 * @param[in] h Height of the picture.
2909 * @return Zero if valid, a negative value if invalid.
2910 */
2911int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2912enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2913
2914int avcodec_thread_init(AVCodecContext *s, int thread_count);
2915void avcodec_thread_free(AVCodecContext *s);
2916int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size);
2917int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size);
2918//FIXME func typedef
2919
2920/**
2921 * Initializes the AVCodecContext to use the given AVCodec. Prior to using this
2922 * function the context has to be allocated.
2923 *
2924 * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
2925 * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
2926 * retrieving a codec.
2927 *
2928 * @warning This function is not thread safe!
2929 *
2930 * @code
2931 * avcodec_register_all();
2932 * codec = avcodec_find_decoder(CODEC_ID_H264);
2933 * if (!codec)
2934 * exit(1);
2935 *
2936 * context = avcodec_alloc_context();
2937 *
2938 * if (avcodec_open(context, codec) < 0)
2939 * exit(1);
2940 * @endcode
2941 *
2942 * @param avctx The context which will be set up to use the given codec.
2943 * @param codec The codec to use within the context.
2944 * @return zero on success, a negative value on error
2945 * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder
2946 */
2947int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2948
2949/**
2950 * Decodes an audio frame from \p buf into \p samples.
2951 * The avcodec_decode_audio2() function decodes an audio frame from the input
2952 * buffer \p buf of size \p buf_size. To decode it, it makes use of the
2953 * audio codec which was coupled with \p avctx using avcodec_open(). The
2954 * resulting decoded frame is stored in output buffer \p samples. If no frame
2955 * could be decompressed, \p frame_size_ptr is zero. Otherwise, it is the
2956 * decompressed frame size in \e bytes.
2957 *
2958 * @warning You \e must set \p frame_size_ptr to the allocated size of the
2959 * output buffer before calling avcodec_decode_audio2().
2960 *
2961 * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
2962 * the actual read bytes because some optimized bitstream readers read 32 or 64
2963 * bits at once and could read over the end.
2964 *
2965 * @warning The end of the input buffer \p buf should be set to 0 to ensure that
2966 * no overreading happens for damaged MPEG streams.
2967 *
2968 * @note You might have to align the input buffer \p buf and output buffer \p
2969 * samples. The alignment requirements depend on the CPU: On some CPUs it isn't
2970 * necessary at all, on others it won't work at all if not aligned and on others
2971 * it will work but it will have an impact on performance. In practice, the
2972 * bitstream should have 4 byte alignment at minimum and all sample data should
2973 * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
2974 * the linesize is not a multiple of 16 then there's no sense in aligning the
2975 * start of the buffer to 16.
2976 *
2977 * @param avctx the codec context
2978 * @param[out] samples the output buffer
2979 * @param[in,out] frame_size_ptr the output buffer size in bytes
2980 * @param[in] buf the input buffer
2981 * @param[in] buf_size the input buffer size in bytes
2982 * @return On error a negative value is returned, otherwise the number of bytes
2983 * used or zero if no frame could be decompressed.
2984 */
2985int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
2986 int *frame_size_ptr,
2987 const uint8_t *buf, int buf_size);
2988
2989/**
2990 * Decodes a video frame from \p buf into \p picture.
2991 * The avcodec_decode_video() function decodes a video frame from the input
2992 * buffer \p buf of size \p buf_size. To decode it, it makes use of the
2993 * video codec which was coupled with \p avctx using avcodec_open(). The
2994 * resulting decoded frame is stored in \p picture.
2995 *
2996 * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
2997 * the actual read bytes because some optimized bitstream readers read 32 or 64
2998 * bits at once and could read over the end.
2999 *
3000 * @warning The end of the input buffer \p buf should be set to 0 to ensure that
3001 * no overreading happens for damaged MPEG streams.
3002 *
3003 * @note You might have to align the input buffer \p buf and output buffer \p
3004 * samples. The alignment requirements depend on the CPU: on some CPUs it isn't
3005 * necessary at all, on others it won't work at all if not aligned and on others
3006 * it will work but it will have an impact on performance. In practice, the
3007 * bitstream should have 4 byte alignment at minimum and all sample data should
3008 * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
3009 * the linesize is not a multiple of 16 then there's no sense in aligning the
3010 * start of the buffer to 16.
3011 *
3012 * @note Some codecs have a delay between input and output, these need to be
3013 * feeded with buf=NULL, buf_size=0 at the end to return the remaining frames.
3014 *
3015 * @param avctx the codec context
3016 * @param[out] picture The AVFrame in which the decoded video frame will be stored.
3017 * @param[in] buf the input buffer
3018 * @param[in] buf_size the size of the input buffer in bytes
3019 * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
3020 * @return On error a negative value is returned, otherwise the number of bytes
3021 * used or zero if no frame could be decompressed.
3022 */
3023int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
3024 int *got_picture_ptr,
3025 const uint8_t *buf, int buf_size);
3026
3027/* Decode a subtitle message. Return -1 if error, otherwise return the
3028 * number of bytes used. If no subtitle could be decompressed,
3029 * got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
3030int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
3031 int *got_sub_ptr,
3032 const uint8_t *buf, int buf_size);
3033int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
3034 int *data_size_ptr,
3035 uint8_t *buf, int buf_size);
3036
3037/**
3038 * Encodes an audio frame from \p samples into \p buf.
3039 * The avcodec_encode_audio() function encodes an audio frame from the input
3040 * buffer \p samples. To encode it, it makes use of the audio codec which was
3041 * coupled with \p avctx using avcodec_open(). The resulting encoded frame is
3042 * stored in output buffer \p buf.
3043 *
3044 * @note The output buffer should be at least \c FF_MIN_BUFFER_SIZE bytes large.
3045 *
3046 * @param avctx the codec context
3047 * @param[out] buf the output buffer
3048 * @param[in] buf_size the output buffer size
3049 * @param[in] samples the input buffer containing the samples
3050 * The number of samples read from this buffer is frame_size*channels,
3051 * both of which are defined in \p avctx.
3052 * For PCM audio the number of samples read from \p samples is equal to
3053 * \p buf_size * input_sample_size / output_sample_size.
3054 * @return On error a negative value is returned, on success zero or the number
3055 * of bytes used to encode the data read from the input buffer.
3056 */
3057int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
3058 const short *samples);
3059
3060/**
3061 * Encodes a video frame from \p pict into \p buf.
3062 * The avcodec_encode_video() function encodes a video frame from the input
3063 * \p pict. To encode it, it makes use of the video codec which was coupled with
3064 * \p avctx using avcodec_open(). The resulting encoded bytes representing the
3065 * frame are stored in the output buffer \p buf. The input picture should be
3066 * stored using a specific format, namely \c avctx.pix_fmt.
3067 *
3068 * @param avctx the codec context
3069 * @param[out] buf the output buffer for the bitstream of encoded frame
3070 * @param[in] buf_size the size of the output buffer in bytes
3071 * @param[in] pict the input picture to encode
3072 * @return On error a negative value is returned, on success zero or the number
3073 * of bytes used from the output buffer.
3074 */
3075int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
3076 const AVFrame *pict);
3077int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
3078 const AVSubtitle *sub);
3079
3080int avcodec_close(AVCodecContext *avctx);
3081
3082/**
3083 * Register all the codecs, parsers and bitstream filters which were enabled at
3084 * configuration time. If you do not call this function you can select exactly
3085 * which formats you want to support, by using the individual registration
3086 * functions.
3087 *
3088 * @see avcodec_register
3089 * @see av_register_codec_parser
3090 * @see av_register_bitstream_filter
3091 */
3092void avcodec_register_all(void);
3093
3094/**
3095 * Flush buffers, should be called when seeking or when switching to a different stream.
3096 */
3097void avcodec_flush_buffers(AVCodecContext *avctx);
3098
3099void avcodec_default_free_buffers(AVCodecContext *s);
3100
3101/* misc useful functions */
3102
3103/**
3104 * Returns a single letter to describe the given picture type \p pict_type.
3105 *
3106 * @param[in] pict_type the picture type
3107 * @return A single character representing the picture type.
3108 */
3109char av_get_pict_type_char(int pict_type);
3110
3111/**
3112 * Returns codec bits per sample.
3113 *
3114 * @param[in] codec_id the codec
3115 * @return Number of bits per sample or zero if unknown for the given codec.
3116 */
3117int av_get_bits_per_sample(enum CodecID codec_id);
3118
3119/**
3120 * Returns sample format bits per sample.
3121 *
3122 * @param[in] sample_fmt the sample format
3123 * @return Number of bits per sample or zero if unknown for the given sample format.
3124 */
3125int av_get_bits_per_sample_format(enum SampleFormat sample_fmt);
3126
3127/* frame parsing */
3128typedef struct AVCodecParserContext {
3129 void *priv_data;
3130 struct AVCodecParser *parser;
3131 int64_t frame_offset; /* offset of the current frame */
3132 int64_t cur_offset; /* current offset
3133 (incremented by each av_parser_parse()) */
3134 int64_t next_frame_offset; /* offset of the next frame */
3135 /* video info */
3136 int pict_type; /* XXX: Put it back in AVCodecContext. */
3137 /**
3138 * This field is used for proper frame duration computation in lavf.
3139 * It signals, how much longer the frame duration of the current frame
3140 * is compared to normal frame duration.
3141 *
3142 * frame_duration = (1 + repeat_pict) * time_base
3143 *
3144 * It is used by codecs like H.264 to display telecined material.
3145 */
3146 int repeat_pict; /* XXX: Put it back in AVCodecContext. */
3147 int64_t pts; /* pts of the current frame */
3148 int64_t dts; /* dts of the current frame */
3149
3150 /* private data */
3151 int64_t last_pts;
3152 int64_t last_dts;
3153 int fetch_timestamp;
3154
3155#define AV_PARSER_PTS_NB 4
3156 int cur_frame_start_index;
3157 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
3158 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
3159 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
3160
3161 int flags;
3162#define PARSER_FLAG_COMPLETE_FRAMES 0x0001
3163
3164 int64_t offset; ///< byte offset from starting packet start
3165 int64_t cur_frame_end[AV_PARSER_PTS_NB];
3166
3167 /*!
3168 * Set by parser to 1 for key frames and 0 for non-key frames.
3169 * It is initialized to -1, so if the parser doesn't set this flag,
3170 * old-style fallback using FF_I_TYPE picture type as key frames
3171 * will be used.
3172 */
3173 int key_frame;
3174
3175 /**
3176 * Time difference in stream time base units from the pts of this
3177 * packet to the point at which the output from the decoder has converged
3178 * independent from the availability of previous frames. That is, the
3179 * frames are virtually identical no matter if decoding started from
3180 * the very first frame or from this keyframe.
3181 * Is AV_NOPTS_VALUE if unknown.
3182 * This field is not the display duration of the current frame.
3183 *
3184 * The purpose of this field is to allow seeking in streams that have no
3185 * keyframes in the conventional sense. It corresponds to the
3186 * recovery point SEI in H.264 and match_time_delta in NUT. It is also
3187 * essential for some types of subtitle streams to ensure that all
3188 * subtitles are correctly displayed after seeking.
3189 */
3190 int64_t convergence_duration;
3191
3192 // Timestamp generation support:
3193 /**
3194 * Synchronization point for start of timestamp generation.
3195 *
3196 * Set to >0 for sync point, 0 for no sync point and <0 for undefined
3197 * (default).
3198 *
3199 * For example, this corresponds to presence of H.264 buffering period
3200 * SEI message.
3201 */
3202 int dts_sync_point;
3203
3204 /**
3205 * Offset of the current timestamp against last timestamp sync point in
3206 * units of AVCodecContext.time_base.
3207 *
3208 * Set to INT_MIN when dts_sync_point unused. Otherwise, it must
3209 * contain a valid timestamp offset.
3210 *
3211 * Note that the timestamp of sync point has usually a nonzero
3212 * dts_ref_dts_delta, which refers to the previous sync point. Offset of
3213 * the next frame after timestamp sync point will be usually 1.
3214 *
3215 * For example, this corresponds to H.264 cpb_removal_delay.
3216 */
3217 int dts_ref_dts_delta;
3218
3219 /**
3220 * Presentation delay of current frame in units of AVCodecContext.time_base.
3221 *
3222 * Set to INT_MIN when dts_sync_point unused. Otherwise, it must
3223 * contain valid non-negative timestamp delta (presentation time of a frame
3224 * must not lie in the past).
3225 *
3226 * This delay represents the difference between decoding and presentation
3227 * time of the frame.
3228 *
3229 * For example, this corresponds to H.264 dpb_output_delay.
3230 */
3231 int pts_dts_delta;
3232
3233 /**
3234 * Position of the packet in file.
3235 *
3236 * Analogous to cur_frame_pts/dts
3237 */
3238 int64_t cur_frame_pos[AV_PARSER_PTS_NB];
3239
3240 /**
3241 * Byte position of currently parsed frame in stream.
3242 */
3243 int64_t pos;
3244
3245 /**
3246 * Previous frame byte position.
3247 */
3248 int64_t last_pos;
3249} AVCodecParserContext;
3250
3251typedef struct AVCodecParser {
3252 int codec_ids[5]; /* several codec IDs are permitted */
3253 int priv_data_size;
3254 int (*parser_init)(AVCodecParserContext *s);
3255 int (*parser_parse)(AVCodecParserContext *s,
3256 AVCodecContext *avctx,
3257 const uint8_t **poutbuf, int *poutbuf_size,
3258 const uint8_t *buf, int buf_size);
3259 void (*parser_close)(AVCodecParserContext *s);
3260 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
3261 struct AVCodecParser *next;
3262} AVCodecParser;
3263
3264AVCodecParser *av_parser_next(AVCodecParser *c);
3265
3266void av_register_codec_parser(AVCodecParser *parser);
3267AVCodecParserContext *av_parser_init(int codec_id);
3268
3269attribute_deprecated
3270int av_parser_parse(AVCodecParserContext *s,
3271 AVCodecContext *avctx,
3272 uint8_t **poutbuf, int *poutbuf_size,
3273 const uint8_t *buf, int buf_size,
3274 int64_t pts, int64_t dts);
3275
3276/**
3277 * Parse a packet.
3278 *
3279 * @param s parser context.
3280 * @param avctx codec context.
3281 * @param poutbuf set to pointer to parsed buffer or NULL if not yet finished.
3282 * @param poutbuf_size set to size of parsed buffer or zero if not yet finished.
3283 * @param buf input buffer.
3284 * @param buf_size input length, to signal EOF, this should be 0 (so that the last frame can be output).
3285 * @param pts input presentation timestamp.
3286 * @param dts input decoding timestamp.
3287 * @param pos input byte position in stream.
3288 * @return the number of bytes of the input bitstream used.
3289 *
3290 * Example:
3291 * @code
3292 * while(in_len){
3293 * len = av_parser_parse2(myparser, AVCodecContext, &data, &size,
3294 * in_data, in_len,
3295 * pts, dts, pos);
3296 * in_data += len;
3297 * in_len -= len;
3298 *
3299 * if(size)
3300 * decode_frame(data, size);
3301 * }
3302 * @endcode
3303 */
3304int av_parser_parse2(AVCodecParserContext *s,
3305 AVCodecContext *avctx,
3306 uint8_t **poutbuf, int *poutbuf_size,
3307 const uint8_t *buf, int buf_size,
3308 int64_t pts, int64_t dts,
3309 int64_t pos);
3310
3311int av_parser_change(AVCodecParserContext *s,
3312 AVCodecContext *avctx,
3313 uint8_t **poutbuf, int *poutbuf_size,
3314 const uint8_t *buf, int buf_size, int keyframe);
3315void av_parser_close(AVCodecParserContext *s);
3316
3317
3318typedef struct AVBitStreamFilterContext {
3319 void *priv_data;
3320 struct AVBitStreamFilter *filter;
3321 AVCodecParserContext *parser;
3322 struct AVBitStreamFilterContext *next;
3323} AVBitStreamFilterContext;
3324
3325
3326typedef struct AVBitStreamFilter {
3327 const char *name;
3328 int priv_data_size;
3329 int (*filter)(AVBitStreamFilterContext *bsfc,
3330 AVCodecContext *avctx, const char *args,
3331 uint8_t **poutbuf, int *poutbuf_size,
3332 const uint8_t *buf, int buf_size, int keyframe);
3333 void (*close)(AVBitStreamFilterContext *bsfc);
3334 struct AVBitStreamFilter *next;
3335} AVBitStreamFilter;
3336
3337void av_register_bitstream_filter(AVBitStreamFilter *bsf);
3338AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
3339int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
3340 AVCodecContext *avctx, const char *args,
3341 uint8_t **poutbuf, int *poutbuf_size,
3342 const uint8_t *buf, int buf_size, int keyframe);
3343void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
3344
3345AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f);
3346
3347/* memory */
3348
3349/**
3350 * Reallocates the given block if it is not large enough, otherwise it
3351 * does nothing.
3352 *
3353 * @see av_realloc
3354 */
3355void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
3356
3357/**
3358 * Copy image 'src' to 'dst'.
3359 */
3360void av_picture_copy(AVPicture *dst, const AVPicture *src,
3361 int pix_fmt, int width, int height);
3362
3363/**
3364 * Crop image top and left side.
3365 */
3366int av_picture_crop(AVPicture *dst, const AVPicture *src,
3367 int pix_fmt, int top_band, int left_band);
3368
3369/**
3370 * Pad image.
3371 */
3372int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
3373 int padtop, int padbottom, int padleft, int padright, int *color);
3374
3375unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
3376
3377/**
3378 * Parses \p str and put in \p width_ptr and \p height_ptr the detected values.
3379 *
3380 * @return 0 in case of a successful parsing, a negative value otherwise
3381 * @param[in] str the string to parse: it has to be a string in the format
3382 * <width>x<height> or a valid video frame size abbreviation.
3383 * @param[in,out] width_ptr pointer to the variable which will contain the detected
3384 * frame width value
3385 * @param[in,out] height_ptr pointer to the variable which will contain the detected
3386 * frame height value
3387 */
3388int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str);
3389
3390/**
3391 * Parses \p str and put in \p frame_rate the detected values.
3392 *
3393 * @return 0 in case of a successful parsing, a negative value otherwise
3394 * @param[in] str the string to parse: it has to be a string in the format
3395 * <frame_rate_num>/<frame_rate_den>, a float number or a valid video rate abbreviation
3396 * @param[in,out] frame_rate pointer to the AVRational which will contain the detected
3397 * frame rate
3398 */
3399int av_parse_video_frame_rate(AVRational *frame_rate, const char *str);
3400
3401/* error handling */
3402#if EINVAL > 0
3403#define AVERROR(e) (-(e)) /**< Returns a negative error code from a POSIX error code, to return from library functions. */
3404#define AVUNERROR(e) (-(e)) /**< Returns a POSIX error code from a library function error return value. */
3405#else
3406/* Some platforms have E* and errno already negated. */
3407#define AVERROR(e) (e)
3408#define AVUNERROR(e) (e)
3409#endif
3410#define AVERROR_UNKNOWN AVERROR(EINVAL) /**< unknown error */
3411#define AVERROR_IO AVERROR(EIO) /**< I/O error */
3412#define AVERROR_NUMEXPECTED AVERROR(EDOM) /**< Number syntax expected in filename. */
3413#define AVERROR_INVALIDDATA AVERROR(EINVAL) /**< invalid data found */
3414#define AVERROR_NOMEM AVERROR(ENOMEM) /**< not enough memory */
3415#define AVERROR_NOFMT AVERROR(EILSEQ) /**< unknown format */
3416#define AVERROR_NOTSUPP AVERROR(ENOSYS) /**< Operation not supported. */
3417#define AVERROR_NOENT AVERROR(ENOENT) /**< No such file or directory. */
3418#define AVERROR_EOF AVERROR(EPIPE) /**< End of file. */
3419#define AVERROR_PATCHWELCOME -MKTAG('P','A','W','E') /**< Not yet implemented in FFmpeg. Patches welcome. */
3420
3421/**
3422 * Registers the hardware accelerator \p hwaccel.
3423 */
3424void av_register_hwaccel(AVHWAccel *hwaccel);
3425
3426/**
3427 * If hwaccel is NULL, returns the first registered hardware accelerator,
3428 * if hwaccel is non-NULL, returns the next registered hardware accelerator
3429 * after hwaccel, or NULL if hwaccel is the last one.
3430 */
3431AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel);
3432
3433#endif/* MT : DELETE THIS LINE.*/
3434
3435#endif /* AVCODEC_AVCODEC_H */
diff --git a/apps/codecs/libcook/bitstream.c b/apps/codecs/libcook/bitstream.c
index f32e88fdbf..6c8915d12f 100644
--- a/apps/codecs/libcook/bitstream.c
+++ b/apps/codecs/libcook/bitstream.c
@@ -27,7 +27,6 @@
27 * bitstream api. 27 * bitstream api.
28 */ 28 */
29 29
30#include "avcodec.h"
31#include "bitstream.h" 30#include "bitstream.h"
32 31
33const uint8_t ff_log2_run[32]={ 32const uint8_t ff_log2_run[32]={
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-23 14:39:24 +0000