OS/X 10.2.x gcc-3.1 bug workaround by ("Steven M. Schultz" <sms at 2BSD dot COM>)
[libav.git] / libavcodec / avcodec.h
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1#ifndef AVCODEC_H
2#define AVCODEC_H
3
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4/**
5 * @file avcodec.h
d33c949c 6 * external api header.
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7 */
8
9
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10#ifdef __cplusplus
11extern "C" {
12#endif
13
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14#include "common.h"
15
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16#define FFMPEG_VERSION_INT 0x000408
17#define FFMPEG_VERSION "0.4.8"
158c7f05 18#define LIBAVCODEC_BUILD 4684
4b1f4f23 19
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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
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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,
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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,
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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,
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44 CODEC_ID_MSMPEG4V1,
45 CODEC_ID_MSMPEG4V2,
46 CODEC_ID_MSMPEG4V3,
e1a9dbff 47 CODEC_ID_WMV1,
b50eef3a 48 CODEC_ID_WMV2,
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49 CODEC_ID_H263P,
50 CODEC_ID_H263I,
d4f5d74a 51 CODEC_ID_FLV1,
be8ffec9 52 CODEC_ID_SVQ1,
8b82a956 53 CODEC_ID_SVQ3,
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54 CODEC_ID_DVVIDEO,
55 CODEC_ID_DVAUDIO,
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56 CODEC_ID_WMAV1,
57 CODEC_ID_WMAV2,
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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,
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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,
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75 CODEC_ID_ROQ,
76 CODEC_ID_INTERPLAY_VIDEO,
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77 CODEC_ID_XAN_WC3,
78 CODEC_ID_XAN_WC4,
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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,
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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,
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95
96 /* various adpcm codecs */
97 CODEC_ID_ADPCM_IMA_QT,
98 CODEC_ID_ADPCM_IMA_WAV,
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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,
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104 CODEC_ID_ADPCM_XA,
105 CODEC_ID_ADPCM_ADX,
891f64b3 106
107 /* AMR */
108 CODEC_ID_AMR_NB,
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109 CODEC_ID_AMR_WB,
110
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111 /* RealAudio codecs*/
112 CODEC_ID_RA_144,
113 CODEC_ID_RA_288,
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114
115 /* various DPCM codecs */
116 CODEC_ID_ROQ_DPCM,
117 CODEC_ID_INTERPLAY_DPCM,
9937e686 118 CODEC_ID_XAN_DPCM,
de6d9b64 119};
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120
121/* CODEC_ID_MP3LAME is absolete */
122#define CODEC_ID_MP3LAME CODEC_ID_MP3
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123
124enum CodecType {
4a663d80 125 CODEC_TYPE_UNKNOWN = -1,
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126 CODEC_TYPE_VIDEO,
127 CODEC_TYPE_AUDIO,
128};
129
64863965 130/**
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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
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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 {
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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
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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)
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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,
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161 PIX_FMT_MONOWHITE, ///< 0 is white
162 PIX_FMT_MONOBLACK, ///< 0 is black
163 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
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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)
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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,
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170};
171
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172/* currently unused, may be used if 24/32 bits samples ever supported */
173enum SampleFormat {
64863965 174 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
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175};
176
de6d9b64 177/* in bytes */
bc8d1857 178#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 179
d7425f59 180/**
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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
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186 */
187#define FF_INPUT_BUFFER_PADDING_SIZE 8
188
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189/* motion estimation type, EPZS by default */
190enum Motion_Est_ID {
101bea5f 191 ME_ZERO = 1,
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192 ME_FULL,
193 ME_LOG,
194 ME_PHODS,
195 ME_EPZS,
196 ME_X1
197};
198
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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
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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
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211static const __attribute__((unused)) int Motion_Est_QTab[] =
212 { ME_ZERO, ME_PHODS, ME_LOG, ME_X1, ME_EPZS, ME_FULL };
de6d9b64 213
28db7fce 214
4e00e76b 215#define FF_MAX_B_FRAMES 8
9dbcbd92 216
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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
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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
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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
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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 */
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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
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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 */
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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
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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 */
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261/* codec capabilities */
262
64863965 263#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
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264/**
265 * Codec uses get_buffer() for allocating buffers.
266 * direct rendering method 1
267 */
268#define CODEC_CAP_DR1 0x0002
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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 \
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275 /**\
276 * pointer to the picture planes.\
277 * this might be different from the first allocated byte\
278 * - encoding: \
279 * - decoding: \
280 */\
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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\
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286 * - encoding: \
287 * - decoding: \
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288 */\
289 uint8_t *base[4];\
290 /**\
291 * 1 -> keyframe, 0-> not\
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292 * - encoding: set by lavc\
293 * - decoding: set by lavc\
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294 */\
295 int key_frame;\
296\
297 /**\
0da71265 298 * picture type of the frame, see ?_TYPE below.\
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299 * - encoding: set by lavc for coded_picture (and set by user for input)\
300 * - decoding: set by lavc\
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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\
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307 * - encoding: MUST be set by user\
308 * - decoding: set by lavc\
1e491e29 309 */\
be6784dc 310 int64_t pts;\
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311\
312 /**\
313 * picture number in bitstream order.\
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314 * - encoding: set by\
315 * - decoding: set by lavc\
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316 */\
317 int coded_picture_number;\
318 /**\
1e491e29 319 * picture number in display order.\
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320 * - encoding: set by\
321 * - decoding: set by lavc\
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322 */\
323 int display_picture_number;\
324\
325 /**\
158c7f05 326 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
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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; \
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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 \
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335 * - encoding: unused\
336 * - decoding: MUST be set by get_buffer()\
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337 */\
338 int age;\
339\
340 /**\
341 * is this picture used as reference\
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342 * - encoding: unused\
343 * - decoding: set by lavc (before get_buffer() call))\
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344 */\
345 int reference;\
346\
347 /**\
348 * QP table\
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349 * - encoding: unused\
350 * - decoding: set by lavc\
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351 */\
352 int8_t *qscale_table;\
353 /**\
354 * QP store stride\
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355 * - encoding: unused\
356 * - decoding: set by lavc\
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357 */\
358 int qstride;\
359\
360 /**\
361 * mbskip_table[mb]>=1 if MB didnt change\
362 * stride= mb_width = (width+15)>>4\
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363 * - encoding: unused\
364 * - decoding: set by lavc\
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365 */\
366 uint8_t *mbskip_table;\
367\
368 /**\
369 * for some private data of the user\
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370 * - encoding: unused\
371 * - decoding: set by user\
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372 */\
373 void *opaque;\
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374\
375 /**\
376 * error\
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377 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
378 * - decoding: unused\
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379 */\
380 uint64_t error[4];\
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381\
382 /**\
383 * type of the buffer (to keep track of who has to dealloc data[*])\
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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\
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387 */\
388 int type;\
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389 \
390 /**\
391 * when decoding, this signal how much the picture must be delayed.\
392 * extra_delay = repeat_pict / (2*fps)\
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393 * - encoding: unused\
394 * - decoding: set by lavc\
2ec23b6d 395 */\
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396 int repeat_pict;\
397 \
398 /**\
399 * \
400 */\
401 int qscale_type;\
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402 \
403 /**\
404 * The content of the picture is interlaced.\
405 * - encoding: set by user\
406 * - decoding: set by lavc (default 0)\
407 */\
408 int interlaced_frame;\
409 \
410 /**\
411 * if the content is interlaced, is bottom field displayed first.\
412 * - encoding: set by user\
413 * - decoding: set by lavc (default 0)\
414 */\
415 int bottom_field_first;\
2ec23b6d 416
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417#define FF_QSCALE_TYPE_MPEG1 0
418#define FF_QSCALE_TYPE_MPEG2 1
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419
420#define FF_BUFFER_TYPE_INTERNAL 1
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421#define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
422#define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base)
423#define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
4e00e76b 424
1e491e29 425
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426#define FF_I_TYPE 1 // Intra
427#define FF_P_TYPE 2 // Predicted
428#define FF_B_TYPE 3 // Bi-dir predicted
429#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
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430#define FF_SI_TYPE 5
431#define FF_SP_TYPE 6
1e491e29 432
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433/**
434 * Audio Video Frame.
435 */
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436typedef struct AVFrame {
437 FF_COMMON_FRAME
438} AVFrame;
1e491e29 439
14bea432 440#define DEFAULT_FRAME_RATE_BASE 1001000
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441
442/**
443 * main external api structure.
444 */
de6d9b64 445typedef struct AVCodecContext {
b71901e6 446 /**
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447 * the average bitrate.
448 * - encoding: set by user. unused for constant quantizer encoding
449 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
b71901e6 450 */
de6d9b64 451 int bit_rate;
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452
453 /**
64863965 454 * number of bits the bitstream is allowed to diverge from the reference.
b71901e6 455 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
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456 * - encoding: set by user. unused for constant quantizer encoding
457 * - decoding: unused
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458 */
459 int bit_rate_tolerance;
460
461 /**
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462 * CODEC_FLAG_*.
463 * - encoding: set by user.
464 * - decoding: set by user.
b71901e6 465 */
de6d9b64 466 int flags;
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467
468 /**
469 * some codecs needs additionnal format info. It is stored here
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470 * - encoding: set by user.
471 * - decoding: set by lavc. (FIXME is this ok?)
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472 */
473 int sub_id;
474
475 /**
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476 * motion estimation algorithm used for video coding.
477 * - encoding: MUST be set by user.
478 * - decoding: unused
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479 */
480 int me_method;
481
482 /**
64863965 483 * some codecs need / can use extra-data like huffman tables.
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484 * mjpeg: huffman tables
485 * rv10: additional flags
b704e742 486 * mpeg4: global headers (they can be in the bitstream or here)
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487 * - encoding: set/allocated/freed by lavc.
488 * - decoding: set/allocated/freed by user.
b71901e6 489 */
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490 void *extradata;
491 int extradata_size;
492
de6d9b64 493 /* video only */
b71901e6 494 /**
14bea432 495 * frames per sec multiplied by frame_rate_base.
b71901e6 496 * for variable fps this is the precission, so if the timestamps
14bea432 497 * can be specified in msec precssion then this is 1000*frame_rate_base
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498 * - encoding: MUST be set by user
499 * - decoding: set by lavc. 0 or the frame_rate if available
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500 */
501 int frame_rate;
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502
503 /**
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504 * width / height.
505 * - encoding: MUST be set by user.
95831f48 506 * - decoding: set by user if known, codec should override / dynamically change if needed
b71901e6 507 */
de6d9b64 508 int width, height;
b71901e6 509
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510#define FF_ASPECT_SQUARE 1
511#define FF_ASPECT_4_3_625 2
512#define FF_ASPECT_4_3_525 3
513#define FF_ASPECT_16_9_625 4
514#define FF_ASPECT_16_9_525 5
e769f053 515#define FF_ASPECT_EXTENDED 15
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516
517 /**
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518 * the number of pictures in a group of pitures, or 0 for intra_only.
519 * - encoding: set by user.
520 * - decoding: unused
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521 */
522 int gop_size;
523
524 /**
64863965 525 * pixel format, see PIX_FMT_xxx.
36b58e85
RS
526 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
527 * conversion is in order. This only works for
528 * codecs with one supported pix_fmt, we should
529 * do something for a generic case as well.
64863965 530 * - decoding: set by lavc.
b71901e6 531 */
e4eadb4b 532 enum PixelFormat pix_fmt;
bdfcbbed
MK
533
534 /**
535 * Frame rate emulation. If not zero lower layer (i.e. format handler)
536 * has to read frames at native frame rate.
537 * - encoding: set by user.
538 * - decoding: unused.
539 */
540 int rate_emu;
541
b71901e6
MN
542 /**
543 * if non NULL, 'draw_horiz_band' is called by the libavcodec
544 * decoder to draw an horizontal band. It improve cache usage. Not
545 * all codecs can do that. You must check the codec capabilities
546 * before
64863965
MN
547 * - encoding: unused
548 * - decoding: set by user.
3bb07d61
MN
549 * @param height the height of the slice
550 * @param y the y position of the slice
551 * @param type 1->top field, 2->bottom field, 3->frame
552 * @param offset offset into the AVFrame.data from which the slice should be read
b71901e6 553 */
bf89e6b1 554 void (*draw_horiz_band)(struct AVCodecContext *s,
da64ecc3 555 const AVFrame *src, int offset[4],
3bb07d61 556 int y, int type, int height);
bf89e6b1 557
de6d9b64 558 /* audio only */
64863965 559 int sample_rate; ///< samples per sec
de6d9b64 560 int channels;
64863965 561 int sample_fmt; ///< sample format, currenly unused
de6d9b64
FB
562
563 /* the following data should not be initialized */
64863965
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564 int frame_size; ///< in samples, initialized when calling 'init'
565 int frame_number; ///< audio or video frame number
566 int real_pict_num; ///< returns the real picture number of previous encoded frame
1e491e29 567
b71901e6 568 /**
b71901e6 569 * number of frames the decoded output will be delayed relative to
64863965
MN
570 * the encoded input.
571 * - encoding: set by lavc.
572 * - decoding: unused
b71901e6
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573 */
574 int delay;
1ff662cc 575
64863965
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576 /* - encoding parameters */
577 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
578 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
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579
580 /**
64863965
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581 * minimum quantizer.
582 * - encoding: set by user.
583 * - decoding: unused
b71901e6
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584 */
585 int qmin;
586
587 /**
64863965
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588 * maximum quantizer.
589 * - encoding: set by user.
590 * - decoding: unused
b71901e6
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591 */
592 int qmax;
593
594 /**
64863965
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595 * maximum quantizer difference etween frames.
596 * - encoding: set by user.
597 * - decoding: unused
b71901e6
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598 */
599 int max_qdiff;
600
601 /**
64863965 602 * maximum number of b frames between non b frames.
b71901e6 603 * note: the output will be delayed by max_b_frames+1 relative to the input
64863965
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604 * - encoding: set by user.
605 * - decoding: unused
b71901e6
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606 */
607 int max_b_frames;
608
609 /**
64863965
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610 * qscale factor between ip and b frames.
611 * - encoding: set by user.
612 * - decoding: unused
b71901e6
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613 */
614 float b_quant_factor;
615
616 /** obsolete FIXME remove */
617 int rc_strategy;
8b4c7dbc 618 int b_frame_strategy;
9dbcbd92 619
b71901e6 620 /**
64863965
MN
621 * hurry up amount.
622 * - encoding: unused
623 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
b71901e6
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624 */
625 int hurry_up;
2417652e 626
de6d9b64 627 struct AVCodec *codec;
b71901e6 628
de6d9b64
FB
629 void *priv_data;
630
644d98a4 631 /* The following data is for RTP friendly coding */
1f6b6e50 632 /* By now only H.263/H.263+/MPEG4 coder honours this */
644d98a4
J
633 int rtp_mode; /* 1 for activate RTP friendly-mode */
634 /* highers numbers represent more error-prone */
635 /* enviroments, by now just "1" exist */
636
637 int rtp_payload_size; /* The size of the RTP payload, the coder will */
638 /* do it's best to deliver a chunk with size */
639 /* below rtp_payload_size, the chunk will start */
640 /* with a start code on some codecs like H.263 */
641 /* This doesn't take account of any particular */
642 /* headers inside the transmited RTP payload */
81401c1f
J
643
644
645 /* The RTP callcack: This function is called */
646 /* every time the encoder as a packet to send */
647 /* Depends on the encoder if the data starts */
648 /* with a Start Code (it should) H.263 does */
649 void (*rtp_callback)(void *data, int size, int packet_number);
650
098eefe1
MN
651 /* statistics, used for 2-pass encoding */
652 int mv_bits;
653 int header_bits;
654 int i_tex_bits;
655 int p_tex_bits;
656 int i_count;
657 int p_count;
658 int skip_count;
b71901e6
MN
659 int misc_bits;
660
661 /**
64863965
MN
662 * number of bits used for the previously encoded frame.
663 * - encoding: set by lavc
7004ffb3 664 * - decoding: unused
b71901e6 665 */
098eefe1 666 int frame_bits;
7004ffb3 667
b71901e6 668 /**
64863965
MN
669 * private data of the user, can be used to carry app specific stuff.
670 * - encoding: set by user
671 * - decoding: set by user
b71901e6
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672 */
673 void *opaque;
674
de6d9b64 675 char codec_name[32];
4a663d80
PG
676 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
677 enum CodecID codec_id; /* see CODEC_ID_xxx */
7004ffb3
MN
678
679 /**
680 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
681 * this is used to workaround some encoder bugs
bd5a6020 682 * - encoding: set by user, if not then the default based on codec_id will be used
7004ffb3
MN
683 * - decoding: set by user, will be converted to upper case by lavc during init
684 */
685 unsigned int codec_tag;
92ba5ffb 686
b71901e6 687 /**
64863965
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688 * workaround bugs in encoders which sometimes cannot be detected automatically.
689 * - encoding: unused
690 * - decoding: set by user
b71901e6
MN
691 */
692 int workaround_bugs;
64863965 693#define FF_BUG_AUTODETECT 1 ///< autodetection
4d2858de
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694#define FF_BUG_OLD_MSMPEG4 2
695#define FF_BUG_XVID_ILACE 4
696#define FF_BUG_UMP4 8
697#define FF_BUG_NO_PADDING 16
ac0c6638 698#define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
03e93d35 699#define FF_BUG_QPEL_CHROMA 64
db794953 700#define FF_BUG_STD_QPEL 128
36df8805 701#define FF_BUG_QPEL_CHROMA2 256
c40c3482 702#define FF_BUG_DIRECT_BLOCKSIZE 512
1c6dcb0f 703#define FF_BUG_EDGE 1024
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704//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
705
b71901e6 706 /**
64863965
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707 * luma single coeff elimination threshold.
708 * - encoding: set by user
709 * - decoding: unused
b71901e6 710 */
1f6b6e50 711 int luma_elim_threshold;
b71901e6
MN
712
713 /**
64863965
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714 * chroma single coeff elimination threshold.
715 * - encoding: set by user
716 * - decoding: unused
b71901e6 717 */
1f6b6e50 718 int chroma_elim_threshold;
b71901e6
MN
719
720 /**
64863965
MN
721 * strictly follow the std (MPEG4, ...).
722 * - encoding: set by user
723 * - decoding: unused
b71901e6
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724 */
725 int strict_std_compliance;
726
727 /**
64863965 728 * qscale offset between ip and b frames.
b3a391e8
MN
729 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
730 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
64863965
MN
731 * - encoding: set by user.
732 * - decoding: unused
b71901e6
MN
733 */
734 float b_quant_offset;
735
736 /**
ce3bcaed 737 * error resilience higher values will detect more errors but may missdetect
64863965
MN
738 * some more or less valid parts as errors.
739 * - encoding: unused
740 * - decoding: set by user
b71901e6 741 */
1f6b6e50 742 int error_resilience;
ce3bcaed
MN
743#define FF_ER_CAREFULL 1
744#define FF_ER_COMPLIANT 2
745#define FF_ER_AGGRESSIVE 3
746#define FF_ER_VERY_AGGRESSIVE 4
ae72cda6 747
6b72ac63 748 /**
1e491e29
MN
749 * called at the beginning of each frame to get a buffer for it.
750 * if pic.reference is set then the frame will be read later by lavc
3bb07d61 751 * width and height should be rounded up to the next multiple of 16
64863965
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752 * - encoding: unused
753 * - decoding: set by lavc, user can override
b71901e6 754 */
492cd3a9 755 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
b71901e6
MN
756
757 /**
1e491e29
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758 * called to release buffers which where allocated with get_buffer.
759 * a released buffer can be reused in get_buffer()
760 * pic.data[*] must be set to NULL
64863965
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761 * - encoding: unused
762 * - decoding: set by lavc, user can override
b71901e6 763 */
492cd3a9 764 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
0fd90455 765
b71901e6 766 /**
64863965
MN
767 * is 1 if the decoded stream contains b frames, 0 otherwise.
768 * - encoding: unused
769 * - decoding: set by lavc
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770 */
771 int has_b_frames;
b71901e6 772
64863965 773 int block_align; ///< used by some WAV based audio codecs
ce980a95 774
64863965 775 int parse_only; /* - decoding only: if true, only parsing is done
917e06c8
FB
776 (function avcodec_parse_frame()). The frame
777 data is returned. Only MPEG codecs support this now. */
ce980a95 778
b71901e6 779 /**
e4eadb4b 780 * 0-> h263 quant 1-> mpeg quant.
64863965
MN
781 * - encoding: set by user.
782 * - decoding: unused
b71901e6
MN
783 */
784 int mpeg_quant;
ce980a95 785
b71901e6 786 /**
64863965
MN
787 * pass1 encoding statistics output buffer.
788 * - encoding: set by lavc
789 * - decoding: unused
b71901e6 790 */
64863965 791 char *stats_out;
b71901e6
MN
792
793 /**
794 * pass2 encoding statistics input buffer.
795 * concatenated stuff from stats_out of pass1 should be placed here
64863965
MN
796 * - encoding: allocated/set/freed by user
797 * - decoding: unused
b71901e6
MN
798 */
799 char *stats_in;
800
801 /**
64863965 802 * ratecontrol qmin qmax limiting method.
b71901e6 803 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
64863965
MN
804 * - encoding: set by user.
805 * - decoding: unused
b71901e6 806 */
ce980a95 807 float rc_qsquish;
b71901e6 808
ce980a95
MN
809 float rc_qmod_amp;
810 int rc_qmod_freq;
b71901e6
MN
811
812 /**
64863965
MN
813 * ratecontrol override, see RcOverride.
814 * - encoding: allocated/set/freed by user.
815 * - decoding: unused
b71901e6 816 */
ce980a95
MN
817 RcOverride *rc_override;
818 int rc_override_count;
b71901e6
MN
819
820 /**
64863965
MN
821 * rate control equation.
822 * - encoding: set by user
823 * - decoding: unused
b71901e6 824 */
ce980a95 825 char *rc_eq;
b71901e6
MN
826
827 /**
64863965
MN
828 * maximum bitrate.
829 * - encoding: set by user.
830 * - decoding: unused
b71901e6 831 */
ce980a95 832 int rc_max_rate;
b71901e6
MN
833
834 /**
64863965
MN
835 * minimum bitrate.
836 * - encoding: set by user.
837 * - decoding: unused
b71901e6 838 */
ce980a95 839 int rc_min_rate;
b71901e6
MN
840
841 /**
64863965
MN
842 * decoder bitstream buffer size.
843 * - encoding: set by user.
844 * - decoding: unused
b71901e6 845 */
ce980a95
MN
846 int rc_buffer_size;
847 float rc_buffer_aggressivity;
b71901e6
MN
848
849 /**
64863965
MN
850 * qscale factor between p and i frames.
851 * - encoding: set by user.
852 * - decoding: unused
b71901e6
MN
853 */
854 float i_quant_factor;
855
856 /**
64863965 857 * qscale offset between p and i frames.
b3a391e8
MN
858 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
859 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
64863965
MN
860 * - encoding: set by user.
861 * - decoding: unused
b71901e6
MN
862 */
863 float i_quant_offset;
864
865 /**
64863965
MN
866 * initial complexity for pass1 ratecontrol.
867 * - encoding: set by user.
868 * - decoding: unused
b71901e6 869 */
ce980a95 870 float rc_initial_cplx;
917e06c8 871
b71901e6 872 /**
64863965
MN
873 * dct algorithm, see FF_DCT_* below.
874 * - encoding: set by user
875 * - decoding: unused
b71901e6 876 */
28db7fce 877 int dct_algo;
c7e07931 878#define FF_DCT_AUTO 0
28db7fce 879#define FF_DCT_FASTINT 1
c7e07931
MO
880#define FF_DCT_INT 2
881#define FF_DCT_MMX 3
882#define FF_DCT_MLIB 4
05c4072b 883#define FF_DCT_ALTIVEC 5
c5d309f2
MN
884
885 /**
64863965
MN
886 * luminance masking (0-> disabled).
887 * - encoding: set by user
888 * - decoding: unused
c5d309f2
MN
889 */
890 float lumi_masking;
891
892 /**
64863965
MN
893 * temporary complexity masking (0-> disabled).
894 * - encoding: set by user
895 * - decoding: unused
c5d309f2
MN
896 */
897 float temporal_cplx_masking;
898
899 /**
64863965
MN
900 * spatial complexity masking (0-> disabled).
901 * - encoding: set by user
902 * - decoding: unused
c5d309f2
MN
903 */
904 float spatial_cplx_masking;
905
906 /**
64863965
MN
907 * p block masking (0-> disabled).
908 * - encoding: set by user
909 * - decoding: unused
c5d309f2
MN
910 */
911 float p_masking;
15415af4 912
5e746b99 913 /**
64863965
MN
914 * darkness masking (0-> disabled).
915 * - encoding: set by user
916 * - decoding: unused
5e746b99
MN
917 */
918 float dark_masking;
0c2dd16e 919
3a694b04
NK
920
921 /* for binary compatibility */
922 int unused;
923
0c2dd16e 924 /**
64863965
MN
925 * idct algorithm, see FF_IDCT_* below.
926 * - encoding: set by user
927 * - decoding: set by user
2ad1516a
MN
928 */
929 int idct_algo;
930#define FF_IDCT_AUTO 0
931#define FF_IDCT_INT 1
932#define FF_IDCT_SIMPLE 2
933#define FF_IDCT_SIMPLEMMX 3
934#define FF_IDCT_LIBMPEG2MMX 4
935#define FF_IDCT_PS2 5
936#define FF_IDCT_MLIB 6
937#define FF_IDCT_ARM 7
05c4072b 938#define FF_IDCT_ALTIVEC 8
b82cdc72 939#define FF_IDCT_SH4 9
bd7d1ea7 940#define FF_IDCT_SIMPLEARM 10
2ad1516a 941
144f0625 942 /**
64863965
MN
943 * slice count.
944 * - encoding: set by lavc
945 * - decoding: set by user (or 0)
144f0625
MN
946 */
947 int slice_count;
948 /**
64863965
MN
949 * slice offsets in the frame in bytes.
950 * - encoding: set/allocated by lavc
951 * - decoding: set/allocated by user (or NULL)
144f0625
MN
952 */
953 int *slice_offset;
954
4d2858de 955 /**
64863965
MN
956 * error concealment flags.
957 * - encoding: unused
958 * - decoding: set by user
4d2858de
MN
959 */
960 int error_concealment;
961#define FF_EC_GUESS_MVS 1
962#define FF_EC_DEBLOCK 2
963
6b72ac63 964 /**
bec89a84 965 * dsp_mask could be add used to disable unwanted CPU features
8350df97 966 * CPU features (i.e. MMX, SSE. ...)
bec89a84
ZK
967 *
968 * with FORCE flag you may instead enable given CPU features
969 * (Dangerous: usable in case of misdetection, improper usage however will
970 * result into program crash)
971 */
972 unsigned dsp_mask;
973#define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
974 /* lower 16 bits - CPU features */
975#ifdef HAVE_MMX
976#define FF_MM_MMX 0x0001 /* standard MMX */
977#define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
978#define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
979#define FF_MM_SSE 0x0008 /* SSE functions */
980#define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
981#endif /* HAVE_MMX */
11f18faf
MN
982
983 /**
64863965
MN
984 * bits per sample/pixel from the demuxer (needed for huffyuv).
985 * - encoding: set by lavc
986 * - decoding: set by user
11f18faf
MN
987 */
988 int bits_per_sample;
989
990 /**
64863965
MN
991 * prediction method (needed for huffyuv).
992 * - encoding: set by user
993 * - decoding: unused
11f18faf
MN
994 */
995 int prediction_method;
996#define FF_PRED_LEFT 0
997#define FF_PRED_PLANE 1
998#define FF_PRED_MEDIAN 2
5d3cea3a
MN
999
1000 /**
64863965
MN
1001 * aspect ratio (0 if unknown).
1002 * - encoding: set by user.
1003 * - decoding: set by lavc.
5d3cea3a
MN
1004 */
1005 float aspect_ratio;
1e491e29
MN
1006
1007 /**
64863965
MN
1008 * the picture in the bitstream.
1009 * - encoding: set by lavc
1010 * - decoding: set by lavc
1e491e29 1011 */
492cd3a9 1012 AVFrame *coded_frame;
c8c437bc
MN
1013
1014 /**
64863965
MN
1015 * debug.
1016 * - encoding: set by user.
1017 * - decoding: set by user.
c8c437bc
MN
1018 */
1019 int debug;
1020#define FF_DEBUG_PICT_INFO 1
1021#define FF_DEBUG_RC 2
1022#define FF_DEBUG_BITSTREAM 4
1023#define FF_DEBUG_MB_TYPE 8
1024#define FF_DEBUG_QP 16
1025#define FF_DEBUG_MV 32
41773b73
MN
1026#define FF_DEBUG_VIS_MV 0x00000040
1027#define FF_DEBUG_SKIP 0x00000080
1028#define FF_DEBUG_STARTCODE 0x00000100
1029#define FF_DEBUG_PTS 0x00000200
46b4feec 1030#define FF_DEBUG_ER 0x00000400
0da71265 1031#define FF_DEBUG_MMCO 0x00000800
8fc6c2b5 1032#define FF_DEBUG_BUGS 0x00001000
140cb663
MN
1033
1034 /**
64863965
MN
1035 * error.
1036 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1037 * - decoding: unused
140cb663
MN
1038 */
1039 uint64_t error[4];
17a70fde
MN
1040
1041 /**
64863965
MN
1042 * minimum MB quantizer.
1043 * - encoding: set by user.
1044 * - decoding: unused
17a70fde
MN
1045 */
1046 int mb_qmin;
1047
1048 /**
64863965
MN
1049 * maximum MB quantizer.
1050 * - encoding: set by user.
1051 * - decoding: unused
17a70fde
MN
1052 */
1053 int mb_qmax;
1457ab52
MN
1054
1055 /**
64863965
MN
1056 * motion estimation compare function.
1057 * - encoding: set by user.
1058 * - decoding: unused
1457ab52
MN
1059 */
1060 int me_cmp;
1061 /**
64863965
MN
1062 * subpixel motion estimation compare function.
1063 * - encoding: set by user.
1064 * - decoding: unused
1457ab52
MN
1065 */
1066 int me_sub_cmp;
1067 /**
64863965
MN
1068 * macroblock compare function (not supported yet).
1069 * - encoding: set by user.
1070 * - decoding: unused
1457ab52
MN
1071 */
1072 int mb_cmp;
1073#define FF_CMP_SAD 0
1074#define FF_CMP_SSE 1
1075#define FF_CMP_SATD 2
1076#define FF_CMP_DCT 3
1077#define FF_CMP_PSNR 4
1078#define FF_CMP_BIT 5
1079#define FF_CMP_RD 6
1080#define FF_CMP_ZERO 7
1081#define FF_CMP_CHROMA 256
1082
1083 /**
64863965
MN
1084 * ME diamond size & shape.
1085 * - encoding: set by user.
1086 * - decoding: unused
1457ab52
MN
1087 */
1088 int dia_size;
b07a5980
MN
1089
1090 /**
64863965
MN
1091 * amount of previous MV predictors (2a+1 x 2a+1 square).
1092 * - encoding: set by user.
1093 * - decoding: unused
b07a5980
MN
1094 */
1095 int last_predictor_count;
70ac76c0 1096
f5fb6b34 1097 /**
64863965
MN
1098 * pre pass for motion estimation.
1099 * - encoding: set by user.
1100 * - decoding: unused
f5fb6b34
MN
1101 */
1102 int pre_me;
b07a5980 1103
70ac76c0 1104 /**
64863965
MN
1105 * motion estimation pre pass compare function.
1106 * - encoding: set by user.
1107 * - decoding: unused
70ac76c0
MN
1108 */
1109 int me_pre_cmp;
826f429a 1110
70ac76c0 1111 /**
64863965
MN
1112 * ME pre pass diamond size & shape.
1113 * - encoding: set by user.
1114 * - decoding: unused
70ac76c0
MN
1115 */
1116 int pre_dia_size;
1117
826f429a 1118 /**
64863965
MN
1119 * subpel ME quality.
1120 * - encoding: set by user.
1121 * - decoding: unused
826f429a
MN
1122 */
1123 int me_subpel_quality;
1124
a33c7159 1125 /**
64863965 1126 * callback to negotiate the pixelFormat.
a33c7159
MN
1127 * @param fmt is the list of formats which are supported by the codec,
1128 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1129 * the first is allways the native one
1130 * @return the choosen format
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1131 * - encoding: unused
1132 * - decoding: set by user, if not set then the native format will always be choosen
a33c7159
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1133 */
1134 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
e2f9490e
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1135
1136 /**
1137 * DTG active format information (additionnal aspect ratio
1138 * information only used in DVB MPEG2 transport streams). 0 if
1139 * not set.
1140 *
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1141 * - encoding: unused.
1142 * - decoding: set by decoder
e2f9490e
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1143 */
1144 int dtg_active_format;
1145#define FF_DTG_AFD_SAME 8
1146#define FF_DTG_AFD_4_3 9
1147#define FF_DTG_AFD_16_9 10
1148#define FF_DTG_AFD_14_9 11
1149#define FF_DTG_AFD_4_3_SP_14_9 13
1150#define FF_DTG_AFD_16_9_SP_14_9 14
1151#define FF_DTG_AFD_SP_4_3 15
1152
ebbcdc9a
MN
1153 /**
1154 * Maximum motion estimation search range in subpel units.
1155 * if 0 then no limit
1156 *
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1157 * - encoding: set by user.
1158 * - decoding: unused.
ebbcdc9a 1159 */
59e0ac8e 1160 int me_range;
ebbcdc9a 1161
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MN
1162 /**
1163 * frame_rate_base.
1164 * for variable fps this is 1
1165 * - encoding: set by user.
1166 * - decoding: set by lavc.
1167 * @todo move this after frame_rate
1168 */
65f7062d 1169
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1170 int frame_rate_base;
1171 /**
1172 * intra quantizer bias.
1173 * - encoding: set by user.
1174 * - decoding: unused
1175 */
1176 int intra_quant_bias;
1177#define FF_DEFAULT_QUANT_BIAS 999999
1178
1179 /**
1180 * inter quantizer bias.
1181 * - encoding: set by user.
1182 * - decoding: unused
1183 */
1184 int inter_quant_bias;
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1185
1186 /**
1187 * color table ID.
1188 * - encoding: unused.
1189 * - decoding: which clrtable should be used for 8bit RGB images
1190 * table have to be stored somewhere FIXME
1191 */
1192 int color_table_id;
1984f635 1193
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1194 /**
1195 * internal_buffer count.
1196 * Dont touch, used by lavc default_get_buffer()
1197 */
1198 int internal_buffer_count;
1199
1200 /**
1201 * internal_buffers.
1202 * Dont touch, used by lavc default_get_buffer()
1203 */
1204 void *internal_buffer;
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1205
1206#define FF_LAMBDA_SHIFT 7
1207#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1208#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1209#define FF_LAMBDA_MAX (256*128-1)
1210
1211#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
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1212 /**
1213 * global quality for codecs which cannot change it per frame.
1214 * this should be proportional to MPEG1/2/4 qscale.
1215 * - encoding: set by user.
1216 * - decoding: unused
1217 */
1218 int global_quality;
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1219
1220#define FF_CODER_TYPE_VLC 0
1221#define FF_CODER_TYPE_AC 1
1222 /**
1223 * coder type
1224 * - encoding: set by user.
1225 * - decoding: unused
1226 */
1227 int coder_type;
1228
1229 /**
1230 * context model
1231 * - encoding: set by user.
1232 * - decoding: unused
1233 */
1234 int context_model;
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1235
1236 /**
1237 * slice flags
1238 * - encoding: unused
1239 * - decoding: set by user.
1240 */
1241 int slice_flags;
1242#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1243#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1244#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1245
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1246 /**
1247 * XVideo Motion Acceleration
1248 * - encoding: forbidden
1249 * - decoding: set by decoder
1250 */
1251 int xvmc_acceleration;
7d1c3fc1
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1252
1253 /**
1254 * macroblock decision mode
1255 * - encoding: set by user.
1256 * - decoding: unused
1257 */
1258 int mb_decision;
1259#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1260#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1261#define FF_MB_DECISION_RD 2 ///< rate distoration
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1262
1263 /**
1264 * custom intra quantization matrix
1265 * - encoding: set by user, can be NULL
1266 * - decoding: set by lavc
1267 */
1268 uint16_t *intra_matrix;
1269
1270 /**
1271 * custom inter quantization matrix
1272 * - encoding: set by user, can be NULL
1273 * - decoding: set by lavc
1274 */
1275 uint16_t *inter_matrix;
7d1c3fc1 1276
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1277 /**
1278 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1279 * this is used to workaround some encoder bugs
1280 * - encoding: unused
1281 * - decoding: set by user, will be converted to upper case by lavc during init
1282 */
1283 unsigned int stream_codec_tag;
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1284
1285 /**
1286 * scene change detection threshold.
1287 * 0 is default, larger means fewer detected scene changes
1288 * - encoding: set by user.
1289 * - decoding: unused
1290 */
1291 int scenechange_threshold;
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1292
1293 /**
1294 * minimum lagrange multipler
1295 * - encoding: set by user.
1296 * - decoding: unused
1297 */
1298 int lmin;
1299
1300 /**
1301 * maximum lagrange multipler
1302 * - encoding: set by user.
1303 * - decoding: unused
1304 */
1305 int lmax;
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1306} AVCodecContext;
1307
97d96aaa 1308
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1309/**
1310 * AVOption.
1311 */
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1312typedef struct AVOption {
1313 /** options' name */
1314 const char *name; /* if name is NULL, it indicates a link to next */
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1315 /** short English text help or const struct AVOption* subpointer */
1316 const char *help; // const struct AVOption* sub;
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1317 /** offset to context structure where the parsed value should be stored */
1318 int offset;
1319 /** options' type */
1320 int type;
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1321#define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1322#define FF_OPT_TYPE_DOUBLE 2 ///< double
1323#define FF_OPT_TYPE_INT 3 ///< integer
1324#define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1325#define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
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1326//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1327#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1328#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1329 /** min value (min == max -> no limits) */
1330 double min;
1331 /** maximum value for double/int */
1332 double max;
1333 /** default boo [0,1]l/double/int value */
1334 double defval;
1335 /**
1336 * default string value (with optional semicolon delimited extra option-list
1337 * i.e. option1;option2;option3
1338 * defval might select other then first argument as default
1339 */
1340 const char *defstr;
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1341#define FF_OPT_MAX_DEPTH 10
1342} AVOption;
1343
64863965 1344/**
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1345 * Parse option(s) and sets fields in passed structure
1346 * @param strct structure where the parsed results will be written
1347 * @param list list with AVOptions
1348 * @param opts string with options for parsing
1349 */
1350int avoption_parse(void* strct, const AVOption* list, const char* opts);
1351
1352
1353/**
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1354 * AVCodec.
1355 */
de6d9b64 1356typedef struct AVCodec {
18f77016 1357 const char *name;
5d234974 1358 enum CodecType type;
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1359 int id;
1360 int priv_data_size;
1361 int (*init)(AVCodecContext *);
0c1a9eda 1362 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
de6d9b64 1363 int (*close)(AVCodecContext *);
0fd90455 1364 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
0c1a9eda 1365 uint8_t *buf, int buf_size);
bf89e6b1 1366 int capabilities;
97d96aaa 1367 const AVOption *options;
de6d9b64 1368 struct AVCodec *next;
7a06ff14 1369 void (*flush)(AVCodecContext *);
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1370} AVCodec;
1371
97d96aaa 1372/**
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1373 * four components are given, that's all.
1374 * the last component is alpha
1375 */
de6d9b64 1376typedef struct AVPicture {
0c1a9eda 1377 uint8_t *data[4];
cd394651 1378 int linesize[4]; ///< number of bytes per line
de6d9b64
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1379} AVPicture;
1380
ba118447
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1381/**
1382 * AVPaletteControl
1383 * This structure defines a method for communicating palette changes
1384 * between and demuxer and a decoder.
1385 */
1386typedef struct AVPaletteControl {
1387
1388 /* demuxer sets this to 1 to indicate the palette has changed;
1389 * decoder resets to 0 */
1390 int palette_changed;
1391
1392 /* 256 3-byte RGB palette entries; the components should be
1393 * formatted in the buffer as "RGBRGB..." and should be scaled to
1394 * 8 bits if they originally represented 6-bit VGA palette
1395 * components */
1396 unsigned char palette[256 * 3];
1397
1398} AVPaletteControl;
1399
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1400extern AVCodec ac3_encoder;
1401extern AVCodec mp2_encoder;
9d36bdc9 1402extern AVCodec mp3lame_encoder;
81e0d0b4 1403extern AVCodec oggvorbis_encoder;
29d48296 1404extern AVCodec faac_encoder;
de6d9b64 1405extern AVCodec mpeg1video_encoder;
029911d1 1406extern AVCodec mpeg2video_encoder;
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1407extern AVCodec h263_encoder;
1408extern AVCodec h263p_encoder;
d4f5d74a 1409extern AVCodec flv_encoder;
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1410extern AVCodec rv10_encoder;
1411extern AVCodec mjpeg_encoder;
b1e6b355 1412extern AVCodec ljpeg_encoder;
bf89e6b1 1413extern AVCodec mpeg4_encoder;
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1414extern AVCodec msmpeg4v1_encoder;
1415extern AVCodec msmpeg4v2_encoder;
1416extern AVCodec msmpeg4v3_encoder;
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1417extern AVCodec wmv1_encoder;
1418extern AVCodec wmv2_encoder;
11f18faf 1419extern AVCodec huffyuv_encoder;
0da71265 1420extern AVCodec h264_encoder;
3d2e8cce 1421extern AVCodec asv1_encoder;
9b56edf5 1422extern AVCodec asv2_encoder;
be3564ed 1423extern AVCodec vcr1_encoder;
5e20f836 1424extern AVCodec ffv1_encoder;
c3bf0288 1425extern AVCodec mdec_encoder;
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1426
1427extern AVCodec h263_decoder;
bf89e6b1 1428extern AVCodec mpeg4_decoder;
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1429extern AVCodec msmpeg4v1_decoder;
1430extern AVCodec msmpeg4v2_decoder;
1431extern AVCodec msmpeg4v3_decoder;
e1a9dbff 1432extern AVCodec wmv1_decoder;
0151a6f5 1433extern AVCodec wmv2_decoder;
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1434extern AVCodec mpeg1video_decoder;
1435extern AVCodec mpeg2video_decoder;
fb364ada 1436extern AVCodec mpeg_xvmc_decoder;
de6d9b64 1437extern AVCodec h263i_decoder;
d4f5d74a 1438extern AVCodec flv_decoder;
de6d9b64 1439extern AVCodec rv10_decoder;
be8ffec9 1440extern AVCodec svq1_decoder;
8b82a956 1441extern AVCodec svq3_decoder;
020fcc94 1442extern AVCodec dvvideo_decoder;
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1443extern AVCodec wmav1_decoder;
1444extern AVCodec wmav2_decoder;
4e66ab3b 1445extern AVCodec mjpeg_decoder;
b135d9fb 1446extern AVCodec mjpegb_decoder;
5e83dec4 1447extern AVCodec sp5x_decoder;
4b1f4f23 1448extern AVCodec mp2_decoder;
a96b68b7 1449extern AVCodec mp3_decoder;
3f95e843
FR
1450extern AVCodec mace3_decoder;
1451extern AVCodec mace6_decoder;
11f18faf 1452extern AVCodec huffyuv_decoder;
3aca208a 1453extern AVCodec oggvorbis_decoder;
f70f7c6d 1454extern AVCodec cyuv_decoder;
0da71265 1455extern AVCodec h264_decoder;
deabd4fd 1456extern AVCodec indeo3_decoder;
d86053a4 1457extern AVCodec vp3_decoder;
f44ee2c3 1458extern AVCodec theora_decoder;
891f64b3 1459extern AVCodec amr_nb_decoder;
bc634f6f 1460extern AVCodec amr_nb_encoder;
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MN
1461extern AVCodec amr_wb_encoder;
1462extern AVCodec amr_wb_decoder;
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1463extern AVCodec aac_decoder;
1464extern AVCodec mpeg4aac_decoder;
3d2e8cce 1465extern AVCodec asv1_decoder;
9b56edf5 1466extern AVCodec asv2_decoder;
be3564ed 1467extern AVCodec vcr1_decoder;
3aff069b 1468extern AVCodec cljr_decoder;
5e20f836 1469extern AVCodec ffv1_decoder;
8809cfee 1470extern AVCodec fourxm_decoder;
c3bf0288 1471extern AVCodec mdec_decoder;
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1472extern AVCodec roq_decoder;
1473extern AVCodec interplay_video_decoder;
9937e686 1474extern AVCodec xan_wc3_decoder;
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1475extern AVCodec rpza_decoder;
1476extern AVCodec cinepak_decoder;
1477extern AVCodec msrle_decoder;
1478extern AVCodec msvideo1_decoder;
6955a882 1479extern AVCodec vqa_decoder;
4120a53a 1480extern AVCodec idcin_decoder;
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NK
1481extern AVCodec ra_144_decoder;
1482extern AVCodec ra_288_decoder;
3ef8be2b
MM
1483extern AVCodec roq_dpcm_decoder;
1484extern AVCodec interplay_dpcm_decoder;
9937e686 1485extern AVCodec xan_dpcm_decoder;
de6d9b64 1486
a96b68b7
FB
1487/* pcm codecs */
1488#define PCM_CODEC(id, name) \
1489extern AVCodec name ## _decoder; \
f11d3f23 1490extern AVCodec name ## _encoder
a96b68b7
FB
1491
1492PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1493PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1494PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1495PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1496PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1497PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1498PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1499PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1500
0147f198
FR
1501/* adpcm codecs */
1502
1503PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1504PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
9937e686
MM
1505PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1506PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2fdf638b 1507PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
0147f198 1508PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
4b465299 1509PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
fc384777
MM
1510PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1511PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
0147f198 1512
a96b68b7
FB
1513#undef PCM_CODEC
1514
1515/* dummy raw video codec */
63167088
RS
1516extern AVCodec rawvideo_encoder;
1517extern AVCodec rawvideo_decoder;
de6d9b64
FB
1518
1519/* the following codecs use external GPL libs */
de6d9b64
FB
1520extern AVCodec ac3_decoder;
1521
1522/* resample.c */
1523
1524struct ReSampleContext;
1525
1526typedef struct ReSampleContext ReSampleContext;
1527
1528ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1529 int output_rate, int input_rate);
1530int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1531void audio_resample_close(ReSampleContext *s);
1532
1533/* YUV420 format is assumed ! */
1534
1535struct ImgReSampleContext;
1536
1537typedef struct ImgReSampleContext ImgReSampleContext;
1538
1539ImgReSampleContext *img_resample_init(int output_width, int output_height,
1540 int input_width, int input_height);
ab6d194a
MN
1541
1542ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1543 int iwidth, int iheight,
1544 int topBand, int bottomBand,
1545 int leftBand, int rightBand);
1546
de6d9b64 1547void img_resample(ImgReSampleContext *s,
da64ecc3 1548 AVPicture *output, const AVPicture *input);
de6d9b64
FB
1549
1550void img_resample_close(ImgReSampleContext *s);
1551
75917b88
DH
1552/**
1553 * Allocate memory for a picture. Call avpicture_free to free it.
1554 *
1555 * @param picture the picture to be filled in.
1556 * @param pix_fmt the format of the picture.
1557 * @param width the width of the picture.
1558 * @param height the height of the picture.
1559 * @return 0 if successful, -1 if not.
1560 */
1561int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1562
1563/* Free a picture previously allocated by avpicture_alloc. */
1564void avpicture_free(AVPicture *picture);
1565
0c1a9eda 1566int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2d1a4094 1567 int pix_fmt, int width, int height);
da64ecc3 1568int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
63167088 1569 unsigned char *dest, int dest_size);
219b06c6 1570int avpicture_get_size(int pix_fmt, int width, int height);
dab64ebc
FB
1571void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1572const char *avcodec_get_pix_fmt_name(int pix_fmt);
63167088 1573enum PixelFormat avcodec_get_pix_fmt(const char* name);
219b06c6 1574
fab21997
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1575#define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1576#define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1577#define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1578#define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1579#define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1580#define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1581
1582int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1583 int has_alpha);
1584int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1585 int has_alpha, int *loss_ptr);
1586
0469baf1
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1587#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1588#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
da64ecc3
DH
1589int img_get_alpha_info(const AVPicture *src,
1590 int pix_fmt, int width, int height);
0469baf1 1591
219b06c6
FB
1592/* convert among pixel formats */
1593int img_convert(AVPicture *dst, int dst_pix_fmt,
da64ecc3 1594 const AVPicture *src, int pix_fmt,
219b06c6
FB
1595 int width, int height);
1596
1597/* deinterlace a picture */
da64ecc3 1598int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
de6d9b64
FB
1599 int pix_fmt, int width, int height);
1600
1601/* external high level API */
1602
1603extern AVCodec *first_avcodec;
1604
156e5023 1605/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 1606unsigned avcodec_version(void);
8bceb6af 1607/* returns LIBAVCODEC_BUILD constant */
51a49663 1608unsigned avcodec_build(void);
de6d9b64
FB
1609void avcodec_init(void);
1610
1611void register_avcodec(AVCodec *format);
1612AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 1613AVCodec *avcodec_find_encoder_by_name(const char *name);
de6d9b64
FB
1614AVCodec *avcodec_find_decoder(enum CodecID id);
1615AVCodec *avcodec_find_decoder_by_name(const char *name);
1616void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1617
1e491e29 1618void avcodec_get_context_defaults(AVCodecContext *s);
7ffbb60e 1619AVCodecContext *avcodec_alloc_context(void);
492cd3a9 1620AVFrame *avcodec_alloc_frame(void);
1e491e29 1621
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MN
1622int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1623void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
d90cf87b 1624void avcodec_default_free_buffers(AVCodecContext *s);
1e491e29 1625
7a06ff14
MN
1626/**
1627 * opens / inits the AVCodecContext.
1628 * not thread save!
1629 */
de6d9b64 1630int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
7a06ff14 1631
0c1a9eda 1632int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 1633 int *frame_size_ptr,
0c1a9eda 1634 uint8_t *buf, int buf_size);
492cd3a9 1635int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 1636 int *got_picture_ptr,
0c1a9eda
ZK
1637 uint8_t *buf, int buf_size);
1638int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
917e06c8 1639 int *data_size_ptr,
0c1a9eda
ZK
1640 uint8_t *buf, int buf_size);
1641int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64 1642 const short *samples);
0c1a9eda 1643int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 1644 const AVFrame *pict);
de6d9b64
FB
1645
1646int avcodec_close(AVCodecContext *avctx);
1647
1648void avcodec_register_all(void);
a96b68b7 1649
1c2a8c7f
MN
1650void avcodec_flush_buffers(AVCodecContext *avctx);
1651
14bea432 1652/* misc usefull functions */
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1653
1654/**
1655 * returns a single letter to describe the picture type
1656 */
1657char av_get_pict_type_char(int pict_type);
1658
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1659/**
1660 * reduce a fraction.
1661 * this is usefull for framerate calculations
1662 * @param max the maximum allowed for dst_nom & dst_den
1663 * @return 1 if exact, 0 otherwise
1664 */
1665int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1666
1667/**
1668 * rescale a 64bit integer.
1669 * a simple a*b/c isnt possible as it can overflow
1670 */
1671int64_t av_rescale(int64_t a, int b, int c);
628d601b 1672
628d601b 1673
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1674/**
1675 * Interface for 0.5.0 version
1676 *
1677 * do not even think about it's usage for this moment
1678 */
1679
1680typedef struct {
64863965 1681 /// compressed size used from given memory buffer
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1682 int size;
1683 /// I/P/B frame type
1684 int frame_type;
1685} avc_enc_result_t;
1686
1687/**
1688 * Commands
1689 * order can't be changed - once it was defined
1690 */
1691typedef enum {
1692 // general commands
1693 AVC_OPEN_BY_NAME = 0xACA000,
1694 AVC_OPEN_BY_CODEC_ID,
1695 AVC_OPEN_BY_FOURCC,
1696 AVC_CLOSE,
1697
1698 AVC_FLUSH,
1699 // pin - struct { uint8_t* src, uint_t src_size }
1700 // pout - struct { AVPicture* img, consumed_bytes,
1701 AVC_DECODE,
1702 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1703 // pout - uint_t used_from_dest_size
1704 AVC_ENCODE,
1705
1706 // query/get video commands
1707 AVC_GET_VERSION = 0xACB000,
1708 AVC_GET_WIDTH,
1709 AVC_GET_HEIGHT,
1710 AVC_GET_DELAY,
1711 AVC_GET_QUANT_TABLE,
1712 // ...
1713
1714 // query/get audio commands
1715 AVC_GET_FRAME_SIZE = 0xABC000,
1716
1717 // maybe define some simple structure which
1718 // might be passed to the user - but they can't
1719 // contain any codec specific parts and these
1720 // calls are usualy necessary only few times
1721
1722 // set video commands
1723 AVC_SET_WIDTH = 0xACD000,
1724 AVC_SET_HEIGHT,
1725
1726 // set video encoding commands
1727 AVC_SET_FRAME_RATE = 0xACD800,
1728 AVC_SET_QUALITY,
1729 AVC_SET_HURRY_UP,
1730
1731 // set audio commands
1732 AVC_SET_SAMPLE_RATE = 0xACE000,
1733 AVC_SET_CHANNELS,
1734
1735} avc_cmd_t;
1736
1737/**
1738 * \param handle allocated private structure by libavcodec
1739 * for initialization pass NULL - will be returned pout
1740 * user is supposed to know nothing about its structure
1741 * \param cmd type of operation to be performed
1742 * \param pint input parameter
1743 * \param pout output parameter
1744 *
1745 * \returns command status - eventually for query command it might return
1746 * integer resulting value
1747 */
1748int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1749
544eb99c 1750/* memory */
e4eadb4b 1751void *av_malloc(unsigned int size);
18f77016 1752void *av_mallocz(unsigned int size);
8e1e6f31 1753void *av_realloc(void *ptr, unsigned int size);
544eb99c 1754void av_free(void *ptr);
8e1e6f31 1755char *av_strdup(const char *s);
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1756void __av_freep(void **ptr);
1757#define av_freep(p) __av_freep((void **)(p))
97d96aaa 1758void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
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1759/* for static data only */
1760/* call av_free_static to release all staticaly allocated tables */
628d601b 1761void av_free_static(void);
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1762void *__av_mallocz_static(void** location, unsigned int size);
1763#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
544eb99c 1764
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1765/* add by bero : in adx.c */
1766int is_adx(const unsigned char *buf,size_t bufsize);
1767
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1768#ifdef __cplusplus
1769}
1770#endif
1771
a96b68b7 1772#endif /* AVCODEC_H */