emu_edge checks simplification and avoid redundant checks for mpeg1/2 if emu_edge...
[libav.git] / libavcodec / avcodec.h
CommitLineData
a96b68b7
FB
1#ifndef AVCODEC_H
2#define AVCODEC_H
3
36df8805
MN
4/**
5 * @file avcodec.h
d33c949c 6 * external api header.
36df8805
MN
7 */
8
9
02d697aa
ZK
10#ifdef __cplusplus
11extern "C" {
12#endif
13
de6d9b64
FB
14#include "common.h"
15
7b7d86f1
FB
16#define FFMPEG_VERSION_INT 0x000408
17#define FFMPEG_VERSION "0.4.8"
158c7f05 18#define LIBAVCODEC_BUILD 4684
4b1f4f23 19
7b7d86f1
FB
20#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
21#define LIBAVCODEC_VERSION FFMPEG_VERSION
22
23#define AV_STRINGIFY(s) AV_TOSTRING(s)
24#define AV_TOSTRING(s) #s
25#define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
ce2749d2 26
de6d9b64
FB
27enum CodecID {
28 CODEC_ID_NONE,
29 CODEC_ID_MPEG1VIDEO,
dcedf586 30 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
fb364ada 31 CODEC_ID_MPEG2VIDEO_XVMC,
de6d9b64
FB
32 CODEC_ID_H263,
33 CODEC_ID_RV10,
34 CODEC_ID_MP2,
dcedf586 35 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
81e0d0b4 36 CODEC_ID_VORBIS,
de6d9b64
FB
37 CODEC_ID_AC3,
38 CODEC_ID_MJPEG,
b135d9fb 39 CODEC_ID_MJPEGB,
b1e6b355 40 CODEC_ID_LJPEG,
5e83dec4 41 CODEC_ID_SP5X,
bf89e6b1 42 CODEC_ID_MPEG4,
de6d9b64 43 CODEC_ID_RAWVIDEO,
84afee34
MN
44 CODEC_ID_MSMPEG4V1,
45 CODEC_ID_MSMPEG4V2,
46 CODEC_ID_MSMPEG4V3,
e1a9dbff 47 CODEC_ID_WMV1,
b50eef3a 48 CODEC_ID_WMV2,
de6d9b64
FB
49 CODEC_ID_H263P,
50 CODEC_ID_H263I,
d4f5d74a 51 CODEC_ID_FLV1,
be8ffec9 52 CODEC_ID_SVQ1,
8b82a956 53 CODEC_ID_SVQ3,
020fcc94
FB
54 CODEC_ID_DVVIDEO,
55 CODEC_ID_DVAUDIO,
bc8d1857
FB
56 CODEC_ID_WMAV1,
57 CODEC_ID_WMAV2,
3f95e843
FR
58 CODEC_ID_MACE3,
59 CODEC_ID_MACE6,
11f18faf 60 CODEC_ID_HUFFYUV,
f70f7c6d 61 CODEC_ID_CYUV,
0da71265 62 CODEC_ID_H264,
deabd4fd 63 CODEC_ID_INDEO3,
d86053a4 64 CODEC_ID_VP3,
f44ee2c3 65 CODEC_ID_THEORA,
280bd7b7
ZK
66 CODEC_ID_AAC,
67 CODEC_ID_MPEG4AAC,
3d2e8cce 68 CODEC_ID_ASV1,
9b56edf5 69 CODEC_ID_ASV2,
5e20f836 70 CODEC_ID_FFV1,
e2a7bb28 71 CODEC_ID_4XM,
be3564ed 72 CODEC_ID_VCR1,
3aff069b 73 CODEC_ID_CLJR,
c3bf0288 74 CODEC_ID_MDEC,
3ef8be2b
MM
75 CODEC_ID_ROQ,
76 CODEC_ID_INTERPLAY_VIDEO,
9937e686
MM
77 CODEC_ID_XAN_WC3,
78 CODEC_ID_XAN_WC4,
2fdf638b
MM
79 CODEC_ID_RPZA,
80 CODEC_ID_CINEPAK,
81 CODEC_ID_WS_VQA,
82 CODEC_ID_MSRLE,
83 CODEC_ID_MSVIDEO1,
4120a53a 84 CODEC_ID_IDCIN,
a96b68b7
FB
85
86 /* various pcm "codecs" */
87 CODEC_ID_PCM_S16LE,
88 CODEC_ID_PCM_S16BE,
89 CODEC_ID_PCM_U16LE,
90 CODEC_ID_PCM_U16BE,
91 CODEC_ID_PCM_S8,
92 CODEC_ID_PCM_U8,
93 CODEC_ID_PCM_MULAW,
94 CODEC_ID_PCM_ALAW,
0147f198
FR
95
96 /* various adpcm codecs */
97 CODEC_ID_ADPCM_IMA_QT,
98 CODEC_ID_ADPCM_IMA_WAV,
9937e686
MM
99 CODEC_ID_ADPCM_IMA_DK3,
100 CODEC_ID_ADPCM_IMA_DK4,
2fdf638b 101 CODEC_ID_ADPCM_IMA_WS,
0147f198 102 CODEC_ID_ADPCM_MS,
e2a7bb28 103 CODEC_ID_ADPCM_4XM,
fc384777
MM
104 CODEC_ID_ADPCM_XA,
105 CODEC_ID_ADPCM_ADX,
891f64b3 106
107 /* AMR */
108 CODEC_ID_AMR_NB,
d663a1fd
MN
109 CODEC_ID_AMR_WB,
110
b8414bbd
NK
111 /* RealAudio codecs*/
112 CODEC_ID_RA_144,
113 CODEC_ID_RA_288,
3ef8be2b
MM
114
115 /* various DPCM codecs */
116 CODEC_ID_ROQ_DPCM,
117 CODEC_ID_INTERPLAY_DPCM,
9937e686 118 CODEC_ID_XAN_DPCM,
de6d9b64 119};
dcedf586
FB
120
121/* CODEC_ID_MP3LAME is absolete */
122#define CODEC_ID_MP3LAME CODEC_ID_MP3
de6d9b64
FB
123
124enum CodecType {
4a663d80 125 CODEC_TYPE_UNKNOWN = -1,
de6d9b64
FB
126 CODEC_TYPE_VIDEO,
127 CODEC_TYPE_AUDIO,
128};
129
64863965 130/**
0f371e3e
MM
131 * Pixel format. Notes:
132 *
133 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
134 * color is put together as:
135 * (A << 24) | (R << 16) | (G << 8) | B
136 * This is stored as BGRA on little endian CPU architectures and ARGB on
137 * big endian CPUs.
138 *
139 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
140 * image data is stored in AVFrame.data[0]. The palette is transported in
141 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
142 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
fc384777
MM
143 * also endian-specific). Note also that the individual RGB palette
144 * components stored in AVFrame.data[1] should be in the range 0..255.
145 * This is important as many custom PAL8 video codecs that were designed
146 * to run on the IBM VGA graphics adapter use 6-bit palette components.
64863965 147 */
de6d9b64 148enum PixelFormat {
cd394651
MN
149 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
150 PIX_FMT_YUV422,
151 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
152 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
153 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
154 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
0f371e3e 155 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
cd394651
MN
156 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
157 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
64863965
MN
158 PIX_FMT_RGB565, ///< always stored in cpu endianness
159 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
dab64ebc 160 PIX_FMT_GRAY8,
64863965
MN
161 PIX_FMT_MONOWHITE, ///< 0 is white
162 PIX_FMT_MONOBLACK, ///< 0 is black
163 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
cd394651
MN
164 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
165 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
166 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
fb364ada
IK
167 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
168 PIX_FMT_XVMC_MPEG2_IDCT,
dab64ebc 169 PIX_FMT_NB,
de6d9b64
FB
170};
171
a96b68b7
FB
172/* currently unused, may be used if 24/32 bits samples ever supported */
173enum SampleFormat {
64863965 174 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
a96b68b7
FB
175};
176
de6d9b64 177/* in bytes */
bc8d1857 178#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 179
d7425f59 180/**
cf713bb8
MN
181 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
182 * this is mainly needed because some optimized bitstream readers read
183 * 32 or 64 bit at once and could read over the end<br>
184 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
185 * MPEG bitstreams could cause overread and segfault
d7425f59
MN
186 */
187#define FF_INPUT_BUFFER_PADDING_SIZE 8
188
e4986da9
J
189/* motion estimation type, EPZS by default */
190enum Motion_Est_ID {
101bea5f 191 ME_ZERO = 1,
e4986da9
J
192 ME_FULL,
193 ME_LOG,
194 ME_PHODS,
195 ME_EPZS,
196 ME_X1
197};
198
ce980a95
MN
199typedef struct RcOverride{
200 int start_frame;
201 int end_frame;
202 int qscale; // if this is 0 then quality_factor will be used instead
203 float quality_factor;
204} RcOverride;
205
101bea5f
J
206/* only for ME compatiblity with old apps */
207extern int motion_estimation_method;
208
e4986da9 209/* ME algos sorted by quality */
8d8c0294 210//FIXME remove IMHO
bc6caae2
J
211static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
212 ME_X1, ME_EPZS, ME_FULL };
de6d9b64 213
28db7fce 214
4e00e76b 215#define FF_MAX_B_FRAMES 8
9dbcbd92 216
a949d72e
MN
217/* encoding support
218 these flags can be passed in AVCodecContext.flags before initing
219 Note: note not everything is supported yet
220*/
de6d9b64 221
64863965
MN
222#define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
223#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed
224#define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
225#define CODEC_FLAG_GMC 0x0020 ///< use GMC
ca7d05d5 226#define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
64863965 227#define CODEC_FLAG_PART 0x0080 ///< use data partitioning
9dbcbd92
MN
228/* parent program gurantees that the input for b-frame containing streams is not written to
229 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 230#define CODEC_FLAG_INPUT_PRESERVED 0x0100
64863965
MN
231#define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
232#define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
233#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
234#define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
235#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
236#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
237#define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
d7425f59 238 of only at frame boundaries */
64863965
MN
239#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
240#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
3bb07d61 241#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
64863965
MN
242#define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
243#define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
244#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
245#define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
21e59552 246/* Fx : Flag for h263+ extra options */
8d8c0294
MN
247#define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
248#define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
64863965 249#define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
f2f6134b 250#define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
21e59552
MN
251/* For advanced prediction mode, we reuse the 4MV flag */
252/* Unsupported options :
253 * Syntax Arithmetic coding (SAC)
254 * Deblocking filter internal loop
255 * Slice structured
256 * Reference Picture Selection
257 * Independant Segment Decoding
258 * Alternative Inter * VLC
259 * Modified Quantization */
260/* /Fx */
bf89e6b1
FB
261/* codec capabilities */
262
64863965 263#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
6814a25c
MN
264/**
265 * Codec uses get_buffer() for allocating buffers.
266 * direct rendering method 1
267 */
268#define CODEC_CAP_DR1 0x0002
917e06c8
FB
269/* if 'parse_only' field is true, then avcodec_parse_frame() can be
270 used */
271#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 272#define CODEC_CAP_TRUNCATED 0x0008
bf89e6b1 273
492cd3a9 274#define FF_COMMON_FRAME \
b536d0aa
MN
275 /**\
276 * pointer to the picture planes.\
277 * this might be different from the first allocated byte\
278 * - encoding: \
279 * - decoding: \
280 */\
1e491e29
MN
281 uint8_t *data[4];\
282 int linesize[4];\
283 /**\
32db2b1d 284 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
1e491e29 285 * this isnt used by lavc unless the default get/release_buffer() is used\
64863965
MN
286 * - encoding: \
287 * - decoding: \
1e491e29
MN
288 */\
289 uint8_t *base[4];\
290 /**\
291 * 1 -> keyframe, 0-> not\
64863965
MN
292 * - encoding: set by lavc\
293 * - decoding: set by lavc\
1e491e29
MN
294 */\
295 int key_frame;\
296\
297 /**\
0da71265 298 * picture type of the frame, see ?_TYPE below.\
64863965
MN
299 * - encoding: set by lavc for coded_picture (and set by user for input)\
300 * - decoding: set by lavc\
1e491e29
MN
301 */\
302 int pict_type;\
303\
304 /**\
305 * presentation timestamp in micro seconds (time when frame should be shown to user)\
306 * if 0 then the frame_rate will be used as reference\
64863965
MN
307 * - encoding: MUST be set by user\
308 * - decoding: set by lavc\
1e491e29 309 */\
be6784dc 310 int64_t pts;\
1e491e29
MN
311\
312 /**\
313 * picture number in bitstream order.\
64863965
MN
314 * - encoding: set by\
315 * - decoding: set by lavc\
1e491e29
MN
316 */\
317 int coded_picture_number;\
318 /**\
1e491e29 319 * picture number in display order.\
64863965
MN
320 * - encoding: set by\
321 * - decoding: set by lavc\
1e491e29
MN
322 */\
323 int display_picture_number;\
324\
325 /**\
158c7f05 326 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
64863965
MN
327 * - encoding: set by lavc for coded_picture (and set by user for input)\
328 * - decoding: set by lavc\
1e491e29 329 */\
158c7f05 330 int quality; \
1e491e29
MN
331\
332 /**\
333 * buffer age (1->was last buffer and dint change, 2->..., ...).\
158c7f05 334 * set to INT_MAX if the buffer has not been used yet \
64863965
MN
335 * - encoding: unused\
336 * - decoding: MUST be set by get_buffer()\
1e491e29
MN
337 */\
338 int age;\
339\
340 /**\
341 * is this picture used as reference\
64863965
MN
342 * - encoding: unused\
343 * - decoding: set by lavc (before get_buffer() call))\
1e491e29
MN
344 */\
345 int reference;\
346\
347 /**\
348 * QP table\
64863965
MN
349 * - encoding: unused\
350 * - decoding: set by lavc\
1e491e29
MN
351 */\
352 int8_t *qscale_table;\
353 /**\
354 * QP store stride\
64863965
MN
355 * - encoding: unused\
356 * - decoding: set by lavc\
1e491e29
MN
357 */\
358 int qstride;\
359\
360 /**\
361 * mbskip_table[mb]>=1 if MB didnt change\
362 * stride= mb_width = (width+15)>>4\
64863965
MN
363 * - encoding: unused\
364 * - decoding: set by lavc\
1e491e29
MN
365 */\
366 uint8_t *mbskip_table;\
367\
368 /**\
369 * for some private data of the user\
64863965
MN
370 * - encoding: unused\
371 * - decoding: set by user\
1e491e29
MN
372 */\
373 void *opaque;\
140cb663
MN
374\
375 /**\
376 * error\
64863965
MN
377 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
378 * - decoding: unused\
140cb663
MN
379 */\
380 uint64_t error[4];\
4e00e76b
MN
381\
382 /**\
383 * type of the buffer (to keep track of who has to dealloc data[*])\
64863965
MN
384 * - encoding: set by the one who allocs it\
385 * - decoding: set by the one who allocs it\
3db320ea 386 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
4e00e76b
MN
387 */\
388 int type;\
2ec23b6d
MN
389 \
390 /**\
391 * when decoding, this signal how much the picture must be delayed.\
392 * extra_delay = repeat_pict / (2*fps)\
64863965
MN
393 * - encoding: unused\
394 * - decoding: set by lavc\
2ec23b6d 395 */\
0426af31
MN
396 int repeat_pict;\
397 \
398 /**\
399 * \
400 */\
401 int qscale_type;\
2ec23b6d 402
0426af31
MN
403#define FF_QSCALE_TYPE_MPEG1 0
404#define FF_QSCALE_TYPE_MPEG2 1
4e00e76b
MN
405
406#define FF_BUFFER_TYPE_INTERNAL 1
9b56edf5
MN
407#define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
408#define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base)
409#define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
4e00e76b 410
1e491e29 411
140cb663
MN
412#define FF_I_TYPE 1 // Intra
413#define FF_P_TYPE 2 // Predicted
414#define FF_B_TYPE 3 // Bi-dir predicted
415#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
0da71265
MN
416#define FF_SI_TYPE 5
417#define FF_SP_TYPE 6
1e491e29 418
0da71265
MN
419/**
420 * Audio Video Frame.
421 */
492cd3a9
MN
422typedef struct AVFrame {
423 FF_COMMON_FRAME
424} AVFrame;
1e491e29 425
14bea432 426#define DEFAULT_FRAME_RATE_BASE 1001000
d33c949c
MN
427
428/**
429 * main external api structure.
430 */
de6d9b64 431typedef struct AVCodecContext {
b71901e6 432 /**
64863965
MN
433 * the average bitrate.
434 * - encoding: set by user. unused for constant quantizer encoding
435 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
b71901e6 436 */
de6d9b64 437 int bit_rate;
b71901e6
MN
438
439 /**
64863965 440 * number of bits the bitstream is allowed to diverge from the reference.
b71901e6 441 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
64863965
MN
442 * - encoding: set by user. unused for constant quantizer encoding
443 * - decoding: unused
b71901e6
MN
444 */
445 int bit_rate_tolerance;
446
447 /**
64863965
MN
448 * CODEC_FLAG_*.
449 * - encoding: set by user.
450 * - decoding: set by user.
b71901e6 451 */
de6d9b64 452 int flags;
b71901e6
MN
453
454 /**
455 * some codecs needs additionnal format info. It is stored here
64863965
MN
456 * - encoding: set by user.
457 * - decoding: set by lavc. (FIXME is this ok?)
b71901e6
MN
458 */
459 int sub_id;
460
461 /**
64863965
MN
462 * motion estimation algorithm used for video coding.
463 * - encoding: MUST be set by user.
464 * - decoding: unused
b71901e6
MN
465 */
466 int me_method;
467
468 /**
64863965 469 * some codecs need / can use extra-data like huffman tables.
b71901e6
MN
470 * mjpeg: huffman tables
471 * rv10: additional flags
b704e742 472 * mpeg4: global headers (they can be in the bitstream or here)
64863965
MN
473 * - encoding: set/allocated/freed by lavc.
474 * - decoding: set/allocated/freed by user.
b71901e6 475 */
e84c31dc
A
476 void *extradata;
477 int extradata_size;
478
de6d9b64 479 /* video only */
b71901e6 480 /**
14bea432 481 * frames per sec multiplied by frame_rate_base.
b71901e6 482 * for variable fps this is the precission, so if the timestamps
14bea432 483 * can be specified in msec precssion then this is 1000*frame_rate_base
64863965
MN
484 * - encoding: MUST be set by user
485 * - decoding: set by lavc. 0 or the frame_rate if available
b71901e6
MN
486 */
487 int frame_rate;
14bea432
MN
488
489 /**
64863965
MN
490 * width / height.
491 * - encoding: MUST be set by user.
95831f48 492 * - decoding: set by user if known, codec should override / dynamically change if needed
b71901e6 493 */
de6d9b64 494 int width, height;
b71901e6 495
2efe097a
MN
496#define FF_ASPECT_SQUARE 1
497#define FF_ASPECT_4_3_625 2
498#define FF_ASPECT_4_3_525 3
499#define FF_ASPECT_16_9_625 4
500#define FF_ASPECT_16_9_525 5
e769f053 501#define FF_ASPECT_EXTENDED 15
b71901e6
MN
502
503 /**
64863965
MN
504 * the number of pictures in a group of pitures, or 0 for intra_only.
505 * - encoding: set by user.
506 * - decoding: unused
b71901e6
MN
507 */
508 int gop_size;
509
510 /**
64863965 511 * pixel format, see PIX_FMT_xxx.
36b58e85
RS
512 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
513 * conversion is in order. This only works for
514 * codecs with one supported pix_fmt, we should
515 * do something for a generic case as well.
64863965 516 * - decoding: set by lavc.
b71901e6 517 */
e4eadb4b 518 enum PixelFormat pix_fmt;
bdfcbbed
MK
519
520 /**
521 * Frame rate emulation. If not zero lower layer (i.e. format handler)
522 * has to read frames at native frame rate.
523 * - encoding: set by user.
524 * - decoding: unused.
525 */
526 int rate_emu;
527
b71901e6
MN
528 /**
529 * if non NULL, 'draw_horiz_band' is called by the libavcodec
530 * decoder to draw an horizontal band. It improve cache usage. Not
531 * all codecs can do that. You must check the codec capabilities
532 * before
64863965
MN
533 * - encoding: unused
534 * - decoding: set by user.
3bb07d61
MN
535 * @param height the height of the slice
536 * @param y the y position of the slice
537 * @param type 1->top field, 2->bottom field, 3->frame
538 * @param offset offset into the AVFrame.data from which the slice should be read
b71901e6 539 */
bf89e6b1 540 void (*draw_horiz_band)(struct AVCodecContext *s,
da64ecc3 541 const AVFrame *src, int offset[4],
3bb07d61 542 int y, int type, int height);
bf89e6b1 543
de6d9b64 544 /* audio only */
64863965 545 int sample_rate; ///< samples per sec
de6d9b64 546 int channels;
64863965 547 int sample_fmt; ///< sample format, currenly unused
de6d9b64
FB
548
549 /* the following data should not be initialized */
64863965
MN
550 int frame_size; ///< in samples, initialized when calling 'init'
551 int frame_number; ///< audio or video frame number
552 int real_pict_num; ///< returns the real picture number of previous encoded frame
1e491e29 553
b71901e6 554 /**
b71901e6 555 * number of frames the decoded output will be delayed relative to
64863965
MN
556 * the encoded input.
557 * - encoding: set by lavc.
558 * - decoding: unused
b71901e6
MN
559 */
560 int delay;
1ff662cc 561
64863965
MN
562 /* - encoding parameters */
563 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
564 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
b71901e6
MN
565
566 /**
64863965
MN
567 * minimum quantizer.
568 * - encoding: set by user.
569 * - decoding: unused
b71901e6
MN
570 */
571 int qmin;
572
573 /**
64863965
MN
574 * maximum quantizer.
575 * - encoding: set by user.
576 * - decoding: unused
b71901e6
MN
577 */
578 int qmax;
579
580 /**
64863965
MN
581 * maximum quantizer difference etween frames.
582 * - encoding: set by user.
583 * - decoding: unused
b71901e6
MN
584 */
585 int max_qdiff;
586
587 /**
64863965 588 * maximum number of b frames between non b frames.
b71901e6 589 * note: the output will be delayed by max_b_frames+1 relative to the input
64863965
MN
590 * - encoding: set by user.
591 * - decoding: unused
b71901e6
MN
592 */
593 int max_b_frames;
594
595 /**
64863965
MN
596 * qscale factor between ip and b frames.
597 * - encoding: set by user.
598 * - decoding: unused
b71901e6
MN
599 */
600 float b_quant_factor;
601
602 /** obsolete FIXME remove */
603 int rc_strategy;
8b4c7dbc 604 int b_frame_strategy;
9dbcbd92 605
b71901e6 606 /**
64863965
MN
607 * hurry up amount.
608 * - encoding: unused
609 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
b71901e6
MN
610 */
611 int hurry_up;
2417652e 612
de6d9b64 613 struct AVCodec *codec;
b71901e6 614
de6d9b64
FB
615 void *priv_data;
616
644d98a4 617 /* The following data is for RTP friendly coding */
1f6b6e50 618 /* By now only H.263/H.263+/MPEG4 coder honours this */
644d98a4
J
619 int rtp_mode; /* 1 for activate RTP friendly-mode */
620 /* highers numbers represent more error-prone */
621 /* enviroments, by now just "1" exist */
622
623 int rtp_payload_size; /* The size of the RTP payload, the coder will */
624 /* do it's best to deliver a chunk with size */
625 /* below rtp_payload_size, the chunk will start */
626 /* with a start code on some codecs like H.263 */
627 /* This doesn't take account of any particular */
628 /* headers inside the transmited RTP payload */
81401c1f
J
629
630
631 /* The RTP callcack: This function is called */
632 /* every time the encoder as a packet to send */
633 /* Depends on the encoder if the data starts */
634 /* with a Start Code (it should) H.263 does */
635 void (*rtp_callback)(void *data, int size, int packet_number);
636
098eefe1
MN
637 /* statistics, used for 2-pass encoding */
638 int mv_bits;
639 int header_bits;
640 int i_tex_bits;
641 int p_tex_bits;
642 int i_count;
643 int p_count;
644 int skip_count;
b71901e6
MN
645 int misc_bits;
646
647 /**
64863965
MN
648 * number of bits used for the previously encoded frame.
649 * - encoding: set by lavc
7004ffb3 650 * - decoding: unused
b71901e6 651 */
098eefe1 652 int frame_bits;
7004ffb3 653
b71901e6 654 /**
64863965
MN
655 * private data of the user, can be used to carry app specific stuff.
656 * - encoding: set by user
657 * - decoding: set by user
b71901e6
MN
658 */
659 void *opaque;
660
de6d9b64 661 char codec_name[32];
4a663d80
PG
662 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
663 enum CodecID codec_id; /* see CODEC_ID_xxx */
7004ffb3
MN
664
665 /**
666 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
667 * this is used to workaround some encoder bugs
bd5a6020 668 * - encoding: set by user, if not then the default based on codec_id will be used
7004ffb3
MN
669 * - decoding: set by user, will be converted to upper case by lavc during init
670 */
671 unsigned int codec_tag;
92ba5ffb 672
b71901e6 673 /**
64863965
MN
674 * workaround bugs in encoders which sometimes cannot be detected automatically.
675 * - encoding: unused
676 * - decoding: set by user
b71901e6
MN
677 */
678 int workaround_bugs;
64863965 679#define FF_BUG_AUTODETECT 1 ///< autodetection
4d2858de
MN
680#define FF_BUG_OLD_MSMPEG4 2
681#define FF_BUG_XVID_ILACE 4
682#define FF_BUG_UMP4 8
683#define FF_BUG_NO_PADDING 16
ac0c6638 684#define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
03e93d35 685#define FF_BUG_QPEL_CHROMA 64
db794953 686#define FF_BUG_STD_QPEL 128
36df8805 687#define FF_BUG_QPEL_CHROMA2 256
c40c3482 688#define FF_BUG_DIRECT_BLOCKSIZE 512
1c6dcb0f 689#define FF_BUG_EDGE 1024
4d2858de
MN
690//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
691
b71901e6 692 /**
64863965
MN
693 * luma single coeff elimination threshold.
694 * - encoding: set by user
695 * - decoding: unused
b71901e6 696 */
1f6b6e50 697 int luma_elim_threshold;
b71901e6
MN
698
699 /**
64863965
MN
700 * chroma single coeff elimination threshold.
701 * - encoding: set by user
702 * - decoding: unused
b71901e6 703 */
1f6b6e50 704 int chroma_elim_threshold;
b71901e6
MN
705
706 /**
64863965
MN
707 * strictly follow the std (MPEG4, ...).
708 * - encoding: set by user
709 * - decoding: unused
b71901e6
MN
710 */
711 int strict_std_compliance;
712
713 /**
64863965 714 * qscale offset between ip and b frames.
b3a391e8
MN
715 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
716 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
64863965
MN
717 * - encoding: set by user.
718 * - decoding: unused
b71901e6
MN
719 */
720 float b_quant_offset;
721
722 /**
ce3bcaed 723 * error resilience higher values will detect more errors but may missdetect
64863965
MN
724 * some more or less valid parts as errors.
725 * - encoding: unused
726 * - decoding: set by user
b71901e6 727 */
1f6b6e50 728 int error_resilience;
ce3bcaed
MN
729#define FF_ER_CAREFULL 1
730#define FF_ER_COMPLIANT 2
731#define FF_ER_AGGRESSIVE 3
732#define FF_ER_VERY_AGGRESSIVE 4
ae72cda6 733
6b72ac63 734 /**
1e491e29
MN
735 * called at the beginning of each frame to get a buffer for it.
736 * if pic.reference is set then the frame will be read later by lavc
3bb07d61 737 * width and height should be rounded up to the next multiple of 16
64863965
MN
738 * - encoding: unused
739 * - decoding: set by lavc, user can override
b71901e6 740 */
492cd3a9 741 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
b71901e6
MN
742
743 /**
1e491e29
MN
744 * called to release buffers which where allocated with get_buffer.
745 * a released buffer can be reused in get_buffer()
746 * pic.data[*] must be set to NULL
64863965
MN
747 * - encoding: unused
748 * - decoding: set by lavc, user can override
b71901e6 749 */
492cd3a9 750 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
0fd90455 751
b71901e6 752 /**
64863965
MN
753 * is 1 if the decoded stream contains b frames, 0 otherwise.
754 * - encoding: unused
755 * - decoding: set by lavc
b71901e6
MN
756 */
757 int has_b_frames;
b71901e6 758
64863965 759 int block_align; ///< used by some WAV based audio codecs
ce980a95 760
64863965 761 int parse_only; /* - decoding only: if true, only parsing is done
917e06c8
FB
762 (function avcodec_parse_frame()). The frame
763 data is returned. Only MPEG codecs support this now. */
ce980a95 764
b71901e6 765 /**
e4eadb4b 766 * 0-> h263 quant 1-> mpeg quant.
64863965
MN
767 * - encoding: set by user.
768 * - decoding: unused
b71901e6
MN
769 */
770 int mpeg_quant;
ce980a95 771
b71901e6 772 /**
64863965
MN
773 * pass1 encoding statistics output buffer.
774 * - encoding: set by lavc
775 * - decoding: unused
b71901e6 776 */
64863965 777 char *stats_out;
b71901e6
MN
778
779 /**
780 * pass2 encoding statistics input buffer.
781 * concatenated stuff from stats_out of pass1 should be placed here
64863965
MN
782 * - encoding: allocated/set/freed by user
783 * - decoding: unused
b71901e6
MN
784 */
785 char *stats_in;
786
787 /**
64863965 788 * ratecontrol qmin qmax limiting method.
b71901e6 789 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
64863965
MN
790 * - encoding: set by user.
791 * - decoding: unused
b71901e6 792 */
ce980a95 793 float rc_qsquish;
b71901e6 794
ce980a95
MN
795 float rc_qmod_amp;
796 int rc_qmod_freq;
b71901e6
MN
797
798 /**
64863965
MN
799 * ratecontrol override, see RcOverride.
800 * - encoding: allocated/set/freed by user.
801 * - decoding: unused
b71901e6 802 */
ce980a95
MN
803 RcOverride *rc_override;
804 int rc_override_count;
b71901e6
MN
805
806 /**
64863965
MN
807 * rate control equation.
808 * - encoding: set by user
809 * - decoding: unused
b71901e6 810 */
ce980a95 811 char *rc_eq;
b71901e6
MN
812
813 /**
64863965
MN
814 * maximum bitrate.
815 * - encoding: set by user.
816 * - decoding: unused
b71901e6 817 */
ce980a95 818 int rc_max_rate;
b71901e6
MN
819
820 /**
64863965
MN
821 * minimum bitrate.
822 * - encoding: set by user.
823 * - decoding: unused
b71901e6 824 */
ce980a95 825 int rc_min_rate;
b71901e6
MN
826
827 /**
64863965
MN
828 * decoder bitstream buffer size.
829 * - encoding: set by user.
830 * - decoding: unused
b71901e6 831 */
ce980a95
MN
832 int rc_buffer_size;
833 float rc_buffer_aggressivity;
b71901e6
MN
834
835 /**
64863965
MN
836 * qscale factor between p and i frames.
837 * - encoding: set by user.
838 * - decoding: unused
b71901e6
MN
839 */
840 float i_quant_factor;
841
842 /**
64863965 843 * qscale offset between p and i frames.
b3a391e8
MN
844 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
845 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
64863965
MN
846 * - encoding: set by user.
847 * - decoding: unused
b71901e6
MN
848 */
849 float i_quant_offset;
850
851 /**
64863965
MN
852 * initial complexity for pass1 ratecontrol.
853 * - encoding: set by user.
854 * - decoding: unused
b71901e6 855 */
ce980a95 856 float rc_initial_cplx;
917e06c8 857
b71901e6 858 /**
64863965
MN
859 * dct algorithm, see FF_DCT_* below.
860 * - encoding: set by user
861 * - decoding: unused
b71901e6 862 */
28db7fce 863 int dct_algo;
c7e07931 864#define FF_DCT_AUTO 0
28db7fce 865#define FF_DCT_FASTINT 1
c7e07931
MO
866#define FF_DCT_INT 2
867#define FF_DCT_MMX 3
868#define FF_DCT_MLIB 4
05c4072b 869#define FF_DCT_ALTIVEC 5
c5d309f2
MN
870
871 /**
64863965
MN
872 * luminance masking (0-> disabled).
873 * - encoding: set by user
874 * - decoding: unused
c5d309f2
MN
875 */
876 float lumi_masking;
877
878 /**
64863965
MN
879 * temporary complexity masking (0-> disabled).
880 * - encoding: set by user
881 * - decoding: unused
c5d309f2
MN
882 */
883 float temporal_cplx_masking;
884
885 /**
64863965
MN
886 * spatial complexity masking (0-> disabled).
887 * - encoding: set by user
888 * - decoding: unused
c5d309f2
MN
889 */
890 float spatial_cplx_masking;
891
892 /**
64863965
MN
893 * p block masking (0-> disabled).
894 * - encoding: set by user
895 * - decoding: unused
c5d309f2
MN
896 */
897 float p_masking;
15415af4 898
5e746b99 899 /**
64863965
MN
900 * darkness masking (0-> disabled).
901 * - encoding: set by user
902 * - decoding: unused
5e746b99
MN
903 */
904 float dark_masking;
0c2dd16e 905
3a694b04
NK
906
907 /* for binary compatibility */
908 int unused;
909
0c2dd16e 910 /**
64863965
MN
911 * idct algorithm, see FF_IDCT_* below.
912 * - encoding: set by user
913 * - decoding: set by user
2ad1516a
MN
914 */
915 int idct_algo;
916#define FF_IDCT_AUTO 0
917#define FF_IDCT_INT 1
918#define FF_IDCT_SIMPLE 2
919#define FF_IDCT_SIMPLEMMX 3
920#define FF_IDCT_LIBMPEG2MMX 4
921#define FF_IDCT_PS2 5
922#define FF_IDCT_MLIB 6
923#define FF_IDCT_ARM 7
05c4072b 924#define FF_IDCT_ALTIVEC 8
b82cdc72 925#define FF_IDCT_SH4 9
bd7d1ea7 926#define FF_IDCT_SIMPLEARM 10
2ad1516a 927
144f0625 928 /**
64863965
MN
929 * slice count.
930 * - encoding: set by lavc
931 * - decoding: set by user (or 0)
144f0625
MN
932 */
933 int slice_count;
934 /**
64863965
MN
935 * slice offsets in the frame in bytes.
936 * - encoding: set/allocated by lavc
937 * - decoding: set/allocated by user (or NULL)
144f0625
MN
938 */
939 int *slice_offset;
940
4d2858de 941 /**
64863965
MN
942 * error concealment flags.
943 * - encoding: unused
944 * - decoding: set by user
4d2858de
MN
945 */
946 int error_concealment;
947#define FF_EC_GUESS_MVS 1
948#define FF_EC_DEBLOCK 2
949
6b72ac63 950 /**
bec89a84 951 * dsp_mask could be add used to disable unwanted CPU features
8350df97 952 * CPU features (i.e. MMX, SSE. ...)
bec89a84
ZK
953 *
954 * with FORCE flag you may instead enable given CPU features
955 * (Dangerous: usable in case of misdetection, improper usage however will
956 * result into program crash)
957 */
958 unsigned dsp_mask;
959#define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
960 /* lower 16 bits - CPU features */
961#ifdef HAVE_MMX
962#define FF_MM_MMX 0x0001 /* standard MMX */
963#define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
964#define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
965#define FF_MM_SSE 0x0008 /* SSE functions */
966#define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
967#endif /* HAVE_MMX */
11f18faf
MN
968
969 /**
64863965
MN
970 * bits per sample/pixel from the demuxer (needed for huffyuv).
971 * - encoding: set by lavc
972 * - decoding: set by user
11f18faf
MN
973 */
974 int bits_per_sample;
975
976 /**
64863965
MN
977 * prediction method (needed for huffyuv).
978 * - encoding: set by user
979 * - decoding: unused
11f18faf
MN
980 */
981 int prediction_method;
982#define FF_PRED_LEFT 0
983#define FF_PRED_PLANE 1
984#define FF_PRED_MEDIAN 2
5d3cea3a
MN
985
986 /**
64863965
MN
987 * aspect ratio (0 if unknown).
988 * - encoding: set by user.
989 * - decoding: set by lavc.
5d3cea3a
MN
990 */
991 float aspect_ratio;
1e491e29
MN
992
993 /**
64863965
MN
994 * the picture in the bitstream.
995 * - encoding: set by lavc
996 * - decoding: set by lavc
1e491e29 997 */
492cd3a9 998 AVFrame *coded_frame;
c8c437bc
MN
999
1000 /**
64863965
MN
1001 * debug.
1002 * - encoding: set by user.
1003 * - decoding: set by user.
c8c437bc
MN
1004 */
1005 int debug;
1006#define FF_DEBUG_PICT_INFO 1
1007#define FF_DEBUG_RC 2
1008#define FF_DEBUG_BITSTREAM 4
1009#define FF_DEBUG_MB_TYPE 8
1010#define FF_DEBUG_QP 16
1011#define FF_DEBUG_MV 32
41773b73
MN
1012#define FF_DEBUG_VIS_MV 0x00000040
1013#define FF_DEBUG_SKIP 0x00000080
1014#define FF_DEBUG_STARTCODE 0x00000100
1015#define FF_DEBUG_PTS 0x00000200
46b4feec 1016#define FF_DEBUG_ER 0x00000400
0da71265 1017#define FF_DEBUG_MMCO 0x00000800
8fc6c2b5 1018#define FF_DEBUG_BUGS 0x00001000
140cb663
MN
1019
1020 /**
64863965
MN
1021 * error.
1022 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1023 * - decoding: unused
140cb663
MN
1024 */
1025 uint64_t error[4];
17a70fde
MN
1026
1027 /**
64863965
MN
1028 * minimum MB quantizer.
1029 * - encoding: set by user.
1030 * - decoding: unused
17a70fde
MN
1031 */
1032 int mb_qmin;
1033
1034 /**
64863965
MN
1035 * maximum MB quantizer.
1036 * - encoding: set by user.
1037 * - decoding: unused
17a70fde
MN
1038 */
1039 int mb_qmax;
1457ab52
MN
1040
1041 /**
64863965
MN
1042 * motion estimation compare function.
1043 * - encoding: set by user.
1044 * - decoding: unused
1457ab52
MN
1045 */
1046 int me_cmp;
1047 /**
64863965
MN
1048 * subpixel motion estimation compare function.
1049 * - encoding: set by user.
1050 * - decoding: unused
1457ab52
MN
1051 */
1052 int me_sub_cmp;
1053 /**
64863965
MN
1054 * macroblock compare function (not supported yet).
1055 * - encoding: set by user.
1056 * - decoding: unused
1457ab52
MN
1057 */
1058 int mb_cmp;
1059#define FF_CMP_SAD 0
1060#define FF_CMP_SSE 1
1061#define FF_CMP_SATD 2
1062#define FF_CMP_DCT 3
1063#define FF_CMP_PSNR 4
1064#define FF_CMP_BIT 5
1065#define FF_CMP_RD 6
1066#define FF_CMP_ZERO 7
1067#define FF_CMP_CHROMA 256
1068
1069 /**
64863965
MN
1070 * ME diamond size & shape.
1071 * - encoding: set by user.
1072 * - decoding: unused
1457ab52
MN
1073 */
1074 int dia_size;
b07a5980
MN
1075
1076 /**
64863965
MN
1077 * amount of previous MV predictors (2a+1 x 2a+1 square).
1078 * - encoding: set by user.
1079 * - decoding: unused
b07a5980
MN
1080 */
1081 int last_predictor_count;
70ac76c0 1082
f5fb6b34 1083 /**
64863965
MN
1084 * pre pass for motion estimation.
1085 * - encoding: set by user.
1086 * - decoding: unused
f5fb6b34
MN
1087 */
1088 int pre_me;
b07a5980 1089
70ac76c0 1090 /**
64863965
MN
1091 * motion estimation pre pass compare function.
1092 * - encoding: set by user.
1093 * - decoding: unused
70ac76c0
MN
1094 */
1095 int me_pre_cmp;
826f429a 1096
70ac76c0 1097 /**
64863965
MN
1098 * ME pre pass diamond size & shape.
1099 * - encoding: set by user.
1100 * - decoding: unused
70ac76c0
MN
1101 */
1102 int pre_dia_size;
1103
826f429a 1104 /**
64863965
MN
1105 * subpel ME quality.
1106 * - encoding: set by user.
1107 * - decoding: unused
826f429a
MN
1108 */
1109 int me_subpel_quality;
1110
a33c7159 1111 /**
64863965 1112 * callback to negotiate the pixelFormat.
a33c7159
MN
1113 * @param fmt is the list of formats which are supported by the codec,
1114 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1115 * the first is allways the native one
1116 * @return the choosen format
64863965
MN
1117 * - encoding: unused
1118 * - decoding: set by user, if not set then the native format will always be choosen
a33c7159
MN
1119 */
1120 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
e2f9490e
FB
1121
1122 /**
1123 * DTG active format information (additionnal aspect ratio
1124 * information only used in DVB MPEG2 transport streams). 0 if
1125 * not set.
1126 *
64863965
MN
1127 * - encoding: unused.
1128 * - decoding: set by decoder
e2f9490e
FB
1129 */
1130 int dtg_active_format;
1131#define FF_DTG_AFD_SAME 8
1132#define FF_DTG_AFD_4_3 9
1133#define FF_DTG_AFD_16_9 10
1134#define FF_DTG_AFD_14_9 11
1135#define FF_DTG_AFD_4_3_SP_14_9 13
1136#define FF_DTG_AFD_16_9_SP_14_9 14
1137#define FF_DTG_AFD_SP_4_3 15
1138
ebbcdc9a
MN
1139 /**
1140 * Maximum motion estimation search range in subpel units.
1141 * if 0 then no limit
1142 *
64863965
MN
1143 * - encoding: set by user.
1144 * - decoding: unused.
ebbcdc9a 1145 */
59e0ac8e 1146 int me_range;
ebbcdc9a 1147
65f7062d
MN
1148 /**
1149 * frame_rate_base.
1150 * for variable fps this is 1
1151 * - encoding: set by user.
1152 * - decoding: set by lavc.
1153 * @todo move this after frame_rate
1154 */
65f7062d 1155
1984f635
MN
1156 int frame_rate_base;
1157 /**
1158 * intra quantizer bias.
1159 * - encoding: set by user.
1160 * - decoding: unused
1161 */
1162 int intra_quant_bias;
1163#define FF_DEFAULT_QUANT_BIAS 999999
1164
1165 /**
1166 * inter quantizer bias.
1167 * - encoding: set by user.
1168 * - decoding: unused
1169 */
1170 int inter_quant_bias;
5cd62665
ZK
1171
1172 /**
1173 * color table ID.
1174 * - encoding: unused.
1175 * - decoding: which clrtable should be used for 8bit RGB images
1176 * table have to be stored somewhere FIXME
1177 */
1178 int color_table_id;
1984f635 1179
d90cf87b
MN
1180 /**
1181 * internal_buffer count.
1182 * Dont touch, used by lavc default_get_buffer()
1183 */
1184 int internal_buffer_count;
1185
1186 /**
1187 * internal_buffers.
1188 * Dont touch, used by lavc default_get_buffer()
1189 */
1190 void *internal_buffer;
158c7f05
MN
1191
1192#define FF_LAMBDA_SHIFT 7
1193#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1194#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1195#define FF_LAMBDA_MAX (256*128-1)
1196
1197#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
3d2e8cce
MN
1198 /**
1199 * global quality for codecs which cannot change it per frame.
1200 * this should be proportional to MPEG1/2/4 qscale.
1201 * - encoding: set by user.
1202 * - decoding: unused
1203 */
1204 int global_quality;
11e659c2
MN
1205
1206#define FF_CODER_TYPE_VLC 0
1207#define FF_CODER_TYPE_AC 1
1208 /**
1209 * coder type
1210 * - encoding: set by user.
1211 * - decoding: unused
1212 */
1213 int coder_type;
1214
1215 /**
1216 * context model
1217 * - encoding: set by user.
1218 * - decoding: unused
1219 */
1220 int context_model;
3bb07d61
MN
1221
1222 /**
1223 * slice flags
1224 * - encoding: unused
1225 * - decoding: set by user.
1226 */
1227 int slice_flags;
1228#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1229#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1230#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1231
fb364ada
IK
1232 /**
1233 * XVideo Motion Acceleration
1234 * - encoding: forbidden
1235 * - decoding: set by decoder
1236 */
1237 int xvmc_acceleration;
7d1c3fc1
MN
1238
1239 /**
1240 * macroblock decision mode
1241 * - encoding: set by user.
1242 * - decoding: unused
1243 */
1244 int mb_decision;
1245#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1246#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1247#define FF_MB_DECISION_RD 2 ///< rate distoration
d6eb3c50
MN
1248
1249 /**
1250 * custom intra quantization matrix
1251 * - encoding: set by user, can be NULL
1252 * - decoding: set by lavc
1253 */
1254 uint16_t *intra_matrix;
1255
1256 /**
1257 * custom inter quantization matrix
1258 * - encoding: set by user, can be NULL
1259 * - decoding: set by lavc
1260 */
1261 uint16_t *inter_matrix;
7d1c3fc1 1262
541ae140
MN
1263 /**
1264 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1265 * this is used to workaround some encoder bugs
1266 * - encoding: unused
1267 * - decoding: set by user, will be converted to upper case by lavc during init
1268 */
1269 unsigned int stream_codec_tag;
05fbd0a2
MN
1270
1271 /**
1272 * scene change detection threshold.
1273 * 0 is default, larger means fewer detected scene changes
1274 * - encoding: set by user.
1275 * - decoding: unused
1276 */
1277 int scenechange_threshold;
158c7f05
MN
1278
1279 /**
1280 * minimum lagrange multipler
1281 * - encoding: set by user.
1282 * - decoding: unused
1283 */
1284 int lmin;
1285
1286 /**
1287 * maximum lagrange multipler
1288 * - encoding: set by user.
1289 * - decoding: unused
1290 */
1291 int lmax;
de6d9b64
FB
1292} AVCodecContext;
1293
97d96aaa 1294
64863965
MN
1295/**
1296 * AVOption.
1297 */
97d96aaa
ZK
1298typedef struct AVOption {
1299 /** options' name */
1300 const char *name; /* if name is NULL, it indicates a link to next */
bec89a84
ZK
1301 /** short English text help or const struct AVOption* subpointer */
1302 const char *help; // const struct AVOption* sub;
97d96aaa
ZK
1303 /** offset to context structure where the parsed value should be stored */
1304 int offset;
1305 /** options' type */
1306 int type;
64863965
MN
1307#define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1308#define FF_OPT_TYPE_DOUBLE 2 ///< double
1309#define FF_OPT_TYPE_INT 3 ///< integer
1310#define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1311#define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
97d96aaa
ZK
1312//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1313#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1314#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1315 /** min value (min == max -> no limits) */
1316 double min;
1317 /** maximum value for double/int */
1318 double max;
1319 /** default boo [0,1]l/double/int value */
1320 double defval;
1321 /**
1322 * default string value (with optional semicolon delimited extra option-list
1323 * i.e. option1;option2;option3
1324 * defval might select other then first argument as default
1325 */
1326 const char *defstr;
97d96aaa
ZK
1327#define FF_OPT_MAX_DEPTH 10
1328} AVOption;
1329
64863965 1330/**
bec89a84
ZK
1331 * Parse option(s) and sets fields in passed structure
1332 * @param strct structure where the parsed results will be written
1333 * @param list list with AVOptions
1334 * @param opts string with options for parsing
1335 */
1336int avoption_parse(void* strct, const AVOption* list, const char* opts);
1337
1338
1339/**
64863965
MN
1340 * AVCodec.
1341 */
de6d9b64 1342typedef struct AVCodec {
18f77016 1343 const char *name;
5d234974 1344 enum CodecType type;
de6d9b64
FB
1345 int id;
1346 int priv_data_size;
1347 int (*init)(AVCodecContext *);
0c1a9eda 1348 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
de6d9b64 1349 int (*close)(AVCodecContext *);
0fd90455 1350 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
0c1a9eda 1351 uint8_t *buf, int buf_size);
bf89e6b1 1352 int capabilities;
97d96aaa 1353 const AVOption *options;
de6d9b64 1354 struct AVCodec *next;
7a06ff14 1355 void (*flush)(AVCodecContext *);
de6d9b64
FB
1356} AVCodec;
1357
97d96aaa 1358/**
d7425f59
MN
1359 * four components are given, that's all.
1360 * the last component is alpha
1361 */
de6d9b64 1362typedef struct AVPicture {
0c1a9eda 1363 uint8_t *data[4];
cd394651 1364 int linesize[4]; ///< number of bytes per line
de6d9b64
FB
1365} AVPicture;
1366
ba118447
MM
1367/**
1368 * AVPaletteControl
1369 * This structure defines a method for communicating palette changes
1370 * between and demuxer and a decoder.
1371 */
1372typedef struct AVPaletteControl {
1373
1374 /* demuxer sets this to 1 to indicate the palette has changed;
1375 * decoder resets to 0 */
1376 int palette_changed;
1377
1378 /* 256 3-byte RGB palette entries; the components should be
1379 * formatted in the buffer as "RGBRGB..." and should be scaled to
1380 * 8 bits if they originally represented 6-bit VGA palette
1381 * components */
1382 unsigned char palette[256 * 3];
1383
1384} AVPaletteControl;
1385
de6d9b64
FB
1386extern AVCodec ac3_encoder;
1387extern AVCodec mp2_encoder;
9d36bdc9 1388extern AVCodec mp3lame_encoder;
81e0d0b4 1389extern AVCodec oggvorbis_encoder;
29d48296 1390extern AVCodec faac_encoder;
de6d9b64 1391extern AVCodec mpeg1video_encoder;
029911d1 1392extern AVCodec mpeg2video_encoder;
de6d9b64
FB
1393extern AVCodec h263_encoder;
1394extern AVCodec h263p_encoder;
d4f5d74a 1395extern AVCodec flv_encoder;
de6d9b64
FB
1396extern AVCodec rv10_encoder;
1397extern AVCodec mjpeg_encoder;
b1e6b355 1398extern AVCodec ljpeg_encoder;
bf89e6b1 1399extern AVCodec mpeg4_encoder;
84afee34
MN
1400extern AVCodec msmpeg4v1_encoder;
1401extern AVCodec msmpeg4v2_encoder;
1402extern AVCodec msmpeg4v3_encoder;
0151a6f5
MN
1403extern AVCodec wmv1_encoder;
1404extern AVCodec wmv2_encoder;
11f18faf 1405extern AVCodec huffyuv_encoder;
0da71265 1406extern AVCodec h264_encoder;
3d2e8cce 1407extern AVCodec asv1_encoder;
9b56edf5 1408extern AVCodec asv2_encoder;
be3564ed 1409extern AVCodec vcr1_encoder;
5e20f836 1410extern AVCodec ffv1_encoder;
c3bf0288 1411extern AVCodec mdec_encoder;
de6d9b64
FB
1412
1413extern AVCodec h263_decoder;
bf89e6b1 1414extern AVCodec mpeg4_decoder;
84afee34
MN
1415extern AVCodec msmpeg4v1_decoder;
1416extern AVCodec msmpeg4v2_decoder;
1417extern AVCodec msmpeg4v3_decoder;
e1a9dbff 1418extern AVCodec wmv1_decoder;
0151a6f5 1419extern AVCodec wmv2_decoder;
922bc38d
MN
1420extern AVCodec mpeg1video_decoder;
1421extern AVCodec mpeg2video_decoder;
fb364ada 1422extern AVCodec mpeg_xvmc_decoder;
de6d9b64 1423extern AVCodec h263i_decoder;
d4f5d74a 1424extern AVCodec flv_decoder;
de6d9b64 1425extern AVCodec rv10_decoder;
be8ffec9 1426extern AVCodec svq1_decoder;
8b82a956 1427extern AVCodec svq3_decoder;
020fcc94 1428extern AVCodec dvvideo_decoder;
bc8d1857
FB
1429extern AVCodec wmav1_decoder;
1430extern AVCodec wmav2_decoder;
4e66ab3b 1431extern AVCodec mjpeg_decoder;
b135d9fb 1432extern AVCodec mjpegb_decoder;
5e83dec4 1433extern AVCodec sp5x_decoder;
4b1f4f23 1434extern AVCodec mp2_decoder;
a96b68b7 1435extern AVCodec mp3_decoder;
3f95e843
FR
1436extern AVCodec mace3_decoder;
1437extern AVCodec mace6_decoder;
11f18faf 1438extern AVCodec huffyuv_decoder;
3aca208a 1439extern AVCodec oggvorbis_decoder;
f70f7c6d 1440extern AVCodec cyuv_decoder;
0da71265 1441extern AVCodec h264_decoder;
deabd4fd 1442extern AVCodec indeo3_decoder;
d86053a4 1443extern AVCodec vp3_decoder;
f44ee2c3 1444extern AVCodec theora_decoder;
891f64b3 1445extern AVCodec amr_nb_decoder;
bc634f6f 1446extern AVCodec amr_nb_encoder;
d663a1fd
MN
1447extern AVCodec amr_wb_encoder;
1448extern AVCodec amr_wb_decoder;
280bd7b7
ZK
1449extern AVCodec aac_decoder;
1450extern AVCodec mpeg4aac_decoder;
3d2e8cce 1451extern AVCodec asv1_decoder;
9b56edf5 1452extern AVCodec asv2_decoder;
be3564ed 1453extern AVCodec vcr1_decoder;
3aff069b 1454extern AVCodec cljr_decoder;
5e20f836 1455extern AVCodec ffv1_decoder;
8809cfee 1456extern AVCodec fourxm_decoder;
c3bf0288 1457extern AVCodec mdec_decoder;
3ef8be2b
MM
1458extern AVCodec roq_decoder;
1459extern AVCodec interplay_video_decoder;
9937e686 1460extern AVCodec xan_wc3_decoder;
2fdf638b
MM
1461extern AVCodec rpza_decoder;
1462extern AVCodec cinepak_decoder;
1463extern AVCodec msrle_decoder;
1464extern AVCodec msvideo1_decoder;
6955a882 1465extern AVCodec vqa_decoder;
4120a53a 1466extern AVCodec idcin_decoder;
b8414bbd
NK
1467extern AVCodec ra_144_decoder;
1468extern AVCodec ra_288_decoder;
3ef8be2b
MM
1469extern AVCodec roq_dpcm_decoder;
1470extern AVCodec interplay_dpcm_decoder;
9937e686 1471extern AVCodec xan_dpcm_decoder;
de6d9b64 1472
a96b68b7
FB
1473/* pcm codecs */
1474#define PCM_CODEC(id, name) \
1475extern AVCodec name ## _decoder; \
f11d3f23 1476extern AVCodec name ## _encoder
a96b68b7
FB
1477
1478PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1479PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1480PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1481PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1482PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1483PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1484PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1485PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1486
0147f198
FR
1487/* adpcm codecs */
1488
1489PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1490PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
9937e686
MM
1491PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1492PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2fdf638b 1493PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
0147f198 1494PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
4b465299 1495PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
fc384777
MM
1496PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1497PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
0147f198 1498
a96b68b7
FB
1499#undef PCM_CODEC
1500
1501/* dummy raw video codec */
63167088
RS
1502extern AVCodec rawvideo_encoder;
1503extern AVCodec rawvideo_decoder;
de6d9b64
FB
1504
1505/* the following codecs use external GPL libs */
de6d9b64
FB
1506extern AVCodec ac3_decoder;
1507
1508/* resample.c */
1509
1510struct ReSampleContext;
1511
1512typedef struct ReSampleContext ReSampleContext;
1513
1514ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1515 int output_rate, int input_rate);
1516int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1517void audio_resample_close(ReSampleContext *s);
1518
1519/* YUV420 format is assumed ! */
1520
1521struct ImgReSampleContext;
1522
1523typedef struct ImgReSampleContext ImgReSampleContext;
1524
1525ImgReSampleContext *img_resample_init(int output_width, int output_height,
1526 int input_width, int input_height);
ab6d194a
MN
1527
1528ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1529 int iwidth, int iheight,
1530 int topBand, int bottomBand,
1531 int leftBand, int rightBand);
1532
de6d9b64 1533void img_resample(ImgReSampleContext *s,
da64ecc3 1534 AVPicture *output, const AVPicture *input);
de6d9b64
FB
1535
1536void img_resample_close(ImgReSampleContext *s);
1537
75917b88
DH
1538/**
1539 * Allocate memory for a picture. Call avpicture_free to free it.
1540 *
1541 * @param picture the picture to be filled in.
1542 * @param pix_fmt the format of the picture.
1543 * @param width the width of the picture.
1544 * @param height the height of the picture.
1545 * @return 0 if successful, -1 if not.
1546 */
1547int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1548
1549/* Free a picture previously allocated by avpicture_alloc. */
1550void avpicture_free(AVPicture *picture);
1551
0c1a9eda 1552int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2d1a4094 1553 int pix_fmt, int width, int height);
da64ecc3 1554int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
63167088 1555 unsigned char *dest, int dest_size);
219b06c6 1556int avpicture_get_size(int pix_fmt, int width, int height);
dab64ebc
FB
1557void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1558const char *avcodec_get_pix_fmt_name(int pix_fmt);
63167088 1559enum PixelFormat avcodec_get_pix_fmt(const char* name);
219b06c6 1560
fab21997
FB
1561#define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1562#define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1563#define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1564#define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1565#define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1566#define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1567
1568int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1569 int has_alpha);
1570int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1571 int has_alpha, int *loss_ptr);
1572
0469baf1
FB
1573#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1574#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
da64ecc3
DH
1575int img_get_alpha_info(const AVPicture *src,
1576 int pix_fmt, int width, int height);
0469baf1 1577
219b06c6
FB
1578/* convert among pixel formats */
1579int img_convert(AVPicture *dst, int dst_pix_fmt,
da64ecc3 1580 const AVPicture *src, int pix_fmt,
219b06c6
FB
1581 int width, int height);
1582
1583/* deinterlace a picture */
da64ecc3 1584int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
de6d9b64
FB
1585 int pix_fmt, int width, int height);
1586
1587/* external high level API */
1588
1589extern AVCodec *first_avcodec;
1590
156e5023 1591/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 1592unsigned avcodec_version(void);
8bceb6af 1593/* returns LIBAVCODEC_BUILD constant */
51a49663 1594unsigned avcodec_build(void);
de6d9b64
FB
1595void avcodec_init(void);
1596
1597void register_avcodec(AVCodec *format);
1598AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 1599AVCodec *avcodec_find_encoder_by_name(const char *name);
de6d9b64
FB
1600AVCodec *avcodec_find_decoder(enum CodecID id);
1601AVCodec *avcodec_find_decoder_by_name(const char *name);
1602void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1603
1e491e29 1604void avcodec_get_context_defaults(AVCodecContext *s);
7ffbb60e 1605AVCodecContext *avcodec_alloc_context(void);
492cd3a9 1606AVFrame *avcodec_alloc_frame(void);
1e491e29 1607
492cd3a9
MN
1608int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1609void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
d90cf87b 1610void avcodec_default_free_buffers(AVCodecContext *s);
1e491e29 1611
7a06ff14
MN
1612/**
1613 * opens / inits the AVCodecContext.
1614 * not thread save!
1615 */
de6d9b64 1616int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
7a06ff14 1617
0c1a9eda 1618int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 1619 int *frame_size_ptr,
0c1a9eda 1620 uint8_t *buf, int buf_size);
492cd3a9 1621int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 1622 int *got_picture_ptr,
0c1a9eda
ZK
1623 uint8_t *buf, int buf_size);
1624int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
917e06c8 1625 int *data_size_ptr,
0c1a9eda
ZK
1626 uint8_t *buf, int buf_size);
1627int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64 1628 const short *samples);
0c1a9eda 1629int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 1630 const AVFrame *pict);
de6d9b64
FB
1631
1632int avcodec_close(AVCodecContext *avctx);
1633
1634void avcodec_register_all(void);
a96b68b7 1635
1c2a8c7f
MN
1636void avcodec_flush_buffers(AVCodecContext *avctx);
1637
14bea432 1638/* misc usefull functions */
d8085ea7
MN
1639
1640/**
1641 * returns a single letter to describe the picture type
1642 */
1643char av_get_pict_type_char(int pict_type);
1644
14bea432
MN
1645/**
1646 * reduce a fraction.
1647 * this is usefull for framerate calculations
1648 * @param max the maximum allowed for dst_nom & dst_den
1649 * @return 1 if exact, 0 otherwise
1650 */
1651int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1652
1653/**
1654 * rescale a 64bit integer.
1655 * a simple a*b/c isnt possible as it can overflow
1656 */
1657int64_t av_rescale(int64_t a, int b, int c);
628d601b 1658
628d601b 1659
e8f14793
ZK
1660/**
1661 * Interface for 0.5.0 version
1662 *
1663 * do not even think about it's usage for this moment
1664 */
1665
1666typedef struct {
64863965 1667 /// compressed size used from given memory buffer
e8f14793
ZK
1668 int size;
1669 /// I/P/B frame type
1670 int frame_type;
1671} avc_enc_result_t;
1672
1673/**
1674 * Commands
1675 * order can't be changed - once it was defined
1676 */
1677typedef enum {
1678 // general commands
1679 AVC_OPEN_BY_NAME = 0xACA000,
1680 AVC_OPEN_BY_CODEC_ID,
1681 AVC_OPEN_BY_FOURCC,
1682 AVC_CLOSE,
1683
1684 AVC_FLUSH,
1685 // pin - struct { uint8_t* src, uint_t src_size }
1686 // pout - struct { AVPicture* img, consumed_bytes,
1687 AVC_DECODE,
1688 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1689 // pout - uint_t used_from_dest_size
1690 AVC_ENCODE,
1691
1692 // query/get video commands
1693 AVC_GET_VERSION = 0xACB000,
1694 AVC_GET_WIDTH,
1695 AVC_GET_HEIGHT,
1696 AVC_GET_DELAY,
1697 AVC_GET_QUANT_TABLE,
1698 // ...
1699
1700 // query/get audio commands
1701 AVC_GET_FRAME_SIZE = 0xABC000,
1702
1703 // maybe define some simple structure which
1704 // might be passed to the user - but they can't
1705 // contain any codec specific parts and these
1706 // calls are usualy necessary only few times
1707
1708 // set video commands
1709 AVC_SET_WIDTH = 0xACD000,
1710 AVC_SET_HEIGHT,
1711
1712 // set video encoding commands
1713 AVC_SET_FRAME_RATE = 0xACD800,
1714 AVC_SET_QUALITY,
1715 AVC_SET_HURRY_UP,
1716
1717 // set audio commands
1718 AVC_SET_SAMPLE_RATE = 0xACE000,
1719 AVC_SET_CHANNELS,
1720
1721} avc_cmd_t;
1722
1723/**
1724 * \param handle allocated private structure by libavcodec
1725 * for initialization pass NULL - will be returned pout
1726 * user is supposed to know nothing about its structure
1727 * \param cmd type of operation to be performed
1728 * \param pint input parameter
1729 * \param pout output parameter
1730 *
1731 * \returns command status - eventually for query command it might return
1732 * integer resulting value
1733 */
1734int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1735
544eb99c 1736/* memory */
e4eadb4b 1737void *av_malloc(unsigned int size);
18f77016 1738void *av_mallocz(unsigned int size);
8e1e6f31 1739void *av_realloc(void *ptr, unsigned int size);
544eb99c 1740void av_free(void *ptr);
8e1e6f31 1741char *av_strdup(const char *s);
544eb99c
FB
1742void __av_freep(void **ptr);
1743#define av_freep(p) __av_freep((void **)(p))
97d96aaa 1744void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
855ea723
ZK
1745/* for static data only */
1746/* call av_free_static to release all staticaly allocated tables */
628d601b 1747void av_free_static(void);
855ea723
ZK
1748void *__av_mallocz_static(void** location, unsigned int size);
1749#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
544eb99c 1750
fc384777
MM
1751/* add by bero : in adx.c */
1752int is_adx(const unsigned char *buf,size_t bufsize);
1753
02d697aa
ZK
1754#ifdef __cplusplus
1755}
1756#endif
1757
a96b68b7 1758#endif /* AVCODEC_H */