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