This patch marks frames used in RPZA decoder as reference frames, from
[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"
ca7d05d5 18#define LIBAVCODEC_BUILD 4683
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,
bf89e6b1 41 CODEC_ID_MPEG4,
de6d9b64 42 CODEC_ID_RAWVIDEO,
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43 CODEC_ID_MSMPEG4V1,
44 CODEC_ID_MSMPEG4V2,
45 CODEC_ID_MSMPEG4V3,
e1a9dbff 46 CODEC_ID_WMV1,
b50eef3a 47 CODEC_ID_WMV2,
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48 CODEC_ID_H263P,
49 CODEC_ID_H263I,
d4f5d74a 50 CODEC_ID_FLV1,
be8ffec9 51 CODEC_ID_SVQ1,
8b82a956 52 CODEC_ID_SVQ3,
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53 CODEC_ID_DVVIDEO,
54 CODEC_ID_DVAUDIO,
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55 CODEC_ID_WMAV1,
56 CODEC_ID_WMAV2,
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57 CODEC_ID_MACE3,
58 CODEC_ID_MACE6,
11f18faf 59 CODEC_ID_HUFFYUV,
f70f7c6d 60 CODEC_ID_CYUV,
0da71265 61 CODEC_ID_H264,
deabd4fd 62 CODEC_ID_INDEO3,
d86053a4 63 CODEC_ID_VP3,
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64 CODEC_ID_AAC,
65 CODEC_ID_MPEG4AAC,
3d2e8cce 66 CODEC_ID_ASV1,
9b56edf5 67 CODEC_ID_ASV2,
5e20f836 68 CODEC_ID_FFV1,
e2a7bb28 69 CODEC_ID_4XM,
be3564ed 70 CODEC_ID_VCR1,
3aff069b 71 CODEC_ID_CLJR,
c3bf0288 72 CODEC_ID_MDEC,
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73 CODEC_ID_ROQ,
74 CODEC_ID_INTERPLAY_VIDEO,
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75 CODEC_ID_XAN_WC3,
76 CODEC_ID_XAN_WC4,
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77 CODEC_ID_RPZA,
78 CODEC_ID_CINEPAK,
79 CODEC_ID_WS_VQA,
80 CODEC_ID_MSRLE,
81 CODEC_ID_MSVIDEO1,
4120a53a 82 CODEC_ID_IDCIN,
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83
84 /* various pcm "codecs" */
85 CODEC_ID_PCM_S16LE,
86 CODEC_ID_PCM_S16BE,
87 CODEC_ID_PCM_U16LE,
88 CODEC_ID_PCM_U16BE,
89 CODEC_ID_PCM_S8,
90 CODEC_ID_PCM_U8,
91 CODEC_ID_PCM_MULAW,
92 CODEC_ID_PCM_ALAW,
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93
94 /* various adpcm codecs */
95 CODEC_ID_ADPCM_IMA_QT,
96 CODEC_ID_ADPCM_IMA_WAV,
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97 CODEC_ID_ADPCM_IMA_DK3,
98 CODEC_ID_ADPCM_IMA_DK4,
2fdf638b 99 CODEC_ID_ADPCM_IMA_WS,
0147f198 100 CODEC_ID_ADPCM_MS,
e2a7bb28 101 CODEC_ID_ADPCM_4XM,
891f64b3 102
103 /* AMR */
104 CODEC_ID_AMR_NB,
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105 CODEC_ID_AMR_WB,
106
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107 /* RealAudio codecs*/
108 CODEC_ID_RA_144,
109 CODEC_ID_RA_288,
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110
111 /* various DPCM codecs */
112 CODEC_ID_ROQ_DPCM,
113 CODEC_ID_INTERPLAY_DPCM,
9937e686 114 CODEC_ID_XAN_DPCM,
de6d9b64 115};
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116
117/* CODEC_ID_MP3LAME is absolete */
118#define CODEC_ID_MP3LAME CODEC_ID_MP3
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119
120enum CodecType {
4a663d80 121 CODEC_TYPE_UNKNOWN = -1,
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122 CODEC_TYPE_VIDEO,
123 CODEC_TYPE_AUDIO,
124};
125
64863965 126/**
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127 * Pixel format. Notes:
128 *
129 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
130 * color is put together as:
131 * (A << 24) | (R << 16) | (G << 8) | B
132 * This is stored as BGRA on little endian CPU architectures and ARGB on
133 * big endian CPUs.
134 *
135 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
136 * image data is stored in AVFrame.data[0]. The palette is transported in
137 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
138 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
139 * also endian-specific).
64863965 140 */
de6d9b64 141enum PixelFormat {
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142 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
143 PIX_FMT_YUV422,
144 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
145 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
146 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
147 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
0f371e3e 148 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
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149 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
150 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
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151 PIX_FMT_RGB565, ///< always stored in cpu endianness
152 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
dab64ebc 153 PIX_FMT_GRAY8,
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154 PIX_FMT_MONOWHITE, ///< 0 is white
155 PIX_FMT_MONOBLACK, ///< 0 is black
156 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
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157 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
158 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
159 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
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160 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
161 PIX_FMT_XVMC_MPEG2_IDCT,
dab64ebc 162 PIX_FMT_NB,
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163};
164
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165/* currently unused, may be used if 24/32 bits samples ever supported */
166enum SampleFormat {
64863965 167 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
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168};
169
de6d9b64 170/* in bytes */
bc8d1857 171#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 172
d7425f59 173/**
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174 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
175 * this is mainly needed because some optimized bitstream readers read
176 * 32 or 64 bit at once and could read over the end<br>
177 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
178 * MPEG bitstreams could cause overread and segfault
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179 */
180#define FF_INPUT_BUFFER_PADDING_SIZE 8
181
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182/* motion estimation type, EPZS by default */
183enum Motion_Est_ID {
101bea5f 184 ME_ZERO = 1,
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185 ME_FULL,
186 ME_LOG,
187 ME_PHODS,
188 ME_EPZS,
189 ME_X1
190};
191
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192typedef struct RcOverride{
193 int start_frame;
194 int end_frame;
195 int qscale; // if this is 0 then quality_factor will be used instead
196 float quality_factor;
197} RcOverride;
198
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199/* only for ME compatiblity with old apps */
200extern int motion_estimation_method;
201
e4986da9 202/* ME algos sorted by quality */
8d8c0294 203//FIXME remove IMHO
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204static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
205 ME_X1, ME_EPZS, ME_FULL };
de6d9b64 206
28db7fce 207
4e00e76b 208#define FF_MAX_B_FRAMES 8
9dbcbd92 209
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210/* encoding support
211 these flags can be passed in AVCodecContext.flags before initing
212 Note: note not everything is supported yet
213*/
de6d9b64 214
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215#define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
216#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed
217#define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
218#define CODEC_FLAG_GMC 0x0020 ///< use GMC
ca7d05d5 219#define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
64863965 220#define CODEC_FLAG_PART 0x0080 ///< use data partitioning
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221/* parent program gurantees that the input for b-frame containing streams is not written to
222 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 223#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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224#define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
225#define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
226#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
227#define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
228#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
229#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
230#define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
d7425f59 231 of only at frame boundaries */
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232#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
233#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
3bb07d61 234#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
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235#define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
236#define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
237#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
238#define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
21e59552 239/* Fx : Flag for h263+ extra options */
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240#define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
241#define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
64863965 242#define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
f2f6134b 243#define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
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244/* For advanced prediction mode, we reuse the 4MV flag */
245/* Unsupported options :
246 * Syntax Arithmetic coding (SAC)
247 * Deblocking filter internal loop
248 * Slice structured
249 * Reference Picture Selection
250 * Independant Segment Decoding
251 * Alternative Inter * VLC
252 * Modified Quantization */
253/* /Fx */
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254/* codec capabilities */
255
64863965 256#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
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257/**
258 * Codec uses get_buffer() for allocating buffers.
259 * direct rendering method 1
260 */
261#define CODEC_CAP_DR1 0x0002
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262/* if 'parse_only' field is true, then avcodec_parse_frame() can be
263 used */
264#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 265#define CODEC_CAP_TRUNCATED 0x0008
bf89e6b1 266
492cd3a9 267#define FF_COMMON_FRAME \
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268 /**\
269 * pointer to the picture planes.\
270 * this might be different from the first allocated byte\
271 * - encoding: \
272 * - decoding: \
273 */\
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274 uint8_t *data[4];\
275 int linesize[4];\
276 /**\
32db2b1d 277 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
1e491e29 278 * this isnt used by lavc unless the default get/release_buffer() is used\
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279 * - encoding: \
280 * - decoding: \
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281 */\
282 uint8_t *base[4];\
283 /**\
284 * 1 -> keyframe, 0-> not\
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285 * - encoding: set by lavc\
286 * - decoding: set by lavc\
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287 */\
288 int key_frame;\
289\
290 /**\
0da71265 291 * picture type of the frame, see ?_TYPE below.\
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292 * - encoding: set by lavc for coded_picture (and set by user for input)\
293 * - decoding: set by lavc\
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294 */\
295 int pict_type;\
296\
297 /**\
298 * presentation timestamp in micro seconds (time when frame should be shown to user)\
299 * if 0 then the frame_rate will be used as reference\
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300 * - encoding: MUST be set by user\
301 * - decoding: set by lavc\
1e491e29 302 */\
be6784dc 303 int64_t pts;\
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304\
305 /**\
306 * picture number in bitstream order.\
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307 * - encoding: set by\
308 * - decoding: set by lavc\
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309 */\
310 int coded_picture_number;\
311 /**\
1e491e29 312 * picture number in display order.\
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313 * - encoding: set by\
314 * - decoding: set by lavc\
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315 */\
316 int display_picture_number;\
317\
318 /**\
319 * quality (between 1 (good) and 31 (bad)) \
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320 * - encoding: set by lavc for coded_picture (and set by user for input)\
321 * - decoding: set by lavc\
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322 */\
323 float quality; \
324\
325 /**\
326 * buffer age (1->was last buffer and dint change, 2->..., ...).\
327 * set to something large if the buffer has not been used yet \
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328 * - encoding: unused\
329 * - decoding: MUST be set by get_buffer()\
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330 */\
331 int age;\
332\
333 /**\
334 * is this picture used as reference\
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335 * - encoding: unused\
336 * - decoding: set by lavc (before get_buffer() call))\
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337 */\
338 int reference;\
339\
340 /**\
341 * QP table\
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342 * - encoding: unused\
343 * - decoding: set by lavc\
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344 */\
345 int8_t *qscale_table;\
346 /**\
347 * QP store stride\
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348 * - encoding: unused\
349 * - decoding: set by lavc\
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350 */\
351 int qstride;\
352\
353 /**\
354 * mbskip_table[mb]>=1 if MB didnt change\
355 * stride= mb_width = (width+15)>>4\
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356 * - encoding: unused\
357 * - decoding: set by lavc\
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358 */\
359 uint8_t *mbskip_table;\
360\
361 /**\
362 * for some private data of the user\
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363 * - encoding: unused\
364 * - decoding: set by user\
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365 */\
366 void *opaque;\
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367\
368 /**\
369 * error\
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370 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
371 * - decoding: unused\
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372 */\
373 uint64_t error[4];\
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374\
375 /**\
376 * type of the buffer (to keep track of who has to dealloc data[*])\
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377 * - encoding: set by the one who allocs it\
378 * - decoding: set by the one who allocs it\
3db320ea 379 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
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380 */\
381 int type;\
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382 \
383 /**\
384 * when decoding, this signal how much the picture must be delayed.\
385 * extra_delay = repeat_pict / (2*fps)\
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386 * - encoding: unused\
387 * - decoding: set by lavc\
2ec23b6d 388 */\
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389 int repeat_pict;\
390 \
391 /**\
392 * \
393 */\
394 int qscale_type;\
2ec23b6d 395
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396#define FF_QSCALE_TYPE_MPEG1 0
397#define FF_QSCALE_TYPE_MPEG2 1
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398
399#define FF_BUFFER_TYPE_INTERNAL 1
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400#define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
401#define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base)
402#define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
4e00e76b 403
1e491e29 404
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405#define FF_I_TYPE 1 // Intra
406#define FF_P_TYPE 2 // Predicted
407#define FF_B_TYPE 3 // Bi-dir predicted
408#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
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409#define FF_SI_TYPE 5
410#define FF_SP_TYPE 6
1e491e29 411
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412/**
413 * Audio Video Frame.
414 */
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415typedef struct AVFrame {
416 FF_COMMON_FRAME
417} AVFrame;
1e491e29 418
14bea432 419#define DEFAULT_FRAME_RATE_BASE 1001000
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420
421/**
422 * main external api structure.
423 */
de6d9b64 424typedef struct AVCodecContext {
b71901e6 425 /**
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426 * the average bitrate.
427 * - encoding: set by user. unused for constant quantizer encoding
428 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
b71901e6 429 */
de6d9b64 430 int bit_rate;
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431
432 /**
64863965 433 * number of bits the bitstream is allowed to diverge from the reference.
b71901e6 434 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
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435 * - encoding: set by user. unused for constant quantizer encoding
436 * - decoding: unused
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437 */
438 int bit_rate_tolerance;
439
440 /**
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441 * CODEC_FLAG_*.
442 * - encoding: set by user.
443 * - decoding: set by user.
b71901e6 444 */
de6d9b64 445 int flags;
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446
447 /**
448 * some codecs needs additionnal format info. It is stored here
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449 * - encoding: set by user.
450 * - decoding: set by lavc. (FIXME is this ok?)
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451 */
452 int sub_id;
453
454 /**
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455 * motion estimation algorithm used for video coding.
456 * - encoding: MUST be set by user.
457 * - decoding: unused
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458 */
459 int me_method;
460
461 /**
64863965 462 * some codecs need / can use extra-data like huffman tables.
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463 * mjpeg: huffman tables
464 * rv10: additional flags
b704e742 465 * mpeg4: global headers (they can be in the bitstream or here)
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466 * - encoding: set/allocated/freed by lavc.
467 * - decoding: set/allocated/freed by user.
b71901e6 468 */
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469 void *extradata;
470 int extradata_size;
471
de6d9b64 472 /* video only */
b71901e6 473 /**
14bea432 474 * frames per sec multiplied by frame_rate_base.
b71901e6 475 * for variable fps this is the precission, so if the timestamps
14bea432 476 * can be specified in msec precssion then this is 1000*frame_rate_base
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477 * - encoding: MUST be set by user
478 * - decoding: set by lavc. 0 or the frame_rate if available
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479 */
480 int frame_rate;
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481
482 /**
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483 * width / height.
484 * - encoding: MUST be set by user.
485 * - decoding: set by user, some codecs might override / change it during playback
b71901e6 486 */
de6d9b64 487 int width, height;
b71901e6 488
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489#define FF_ASPECT_SQUARE 1
490#define FF_ASPECT_4_3_625 2
491#define FF_ASPECT_4_3_525 3
492#define FF_ASPECT_16_9_625 4
493#define FF_ASPECT_16_9_525 5
e769f053 494#define FF_ASPECT_EXTENDED 15
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495
496 /**
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497 * the number of pictures in a group of pitures, or 0 for intra_only.
498 * - encoding: set by user.
499 * - decoding: unused
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500 */
501 int gop_size;
502
503 /**
64863965 504 * pixel format, see PIX_FMT_xxx.
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505 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
506 * conversion is in order. This only works for
507 * codecs with one supported pix_fmt, we should
508 * do something for a generic case as well.
64863965 509 * - decoding: set by lavc.
b71901e6 510 */
e4eadb4b 511 enum PixelFormat pix_fmt;
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512
513 /**
514 * Frame rate emulation. If not zero lower layer (i.e. format handler)
515 * has to read frames at native frame rate.
516 * - encoding: set by user.
517 * - decoding: unused.
518 */
519 int rate_emu;
520
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521 /**
522 * if non NULL, 'draw_horiz_band' is called by the libavcodec
523 * decoder to draw an horizontal band. It improve cache usage. Not
524 * all codecs can do that. You must check the codec capabilities
525 * before
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526 * - encoding: unused
527 * - decoding: set by user.
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528 * @param height the height of the slice
529 * @param y the y position of the slice
530 * @param type 1->top field, 2->bottom field, 3->frame
531 * @param offset offset into the AVFrame.data from which the slice should be read
b71901e6 532 */
bf89e6b1 533 void (*draw_horiz_band)(struct AVCodecContext *s,
da64ecc3 534 const AVFrame *src, int offset[4],
3bb07d61 535 int y, int type, int height);
bf89e6b1 536
de6d9b64 537 /* audio only */
64863965 538 int sample_rate; ///< samples per sec
de6d9b64 539 int channels;
64863965 540 int sample_fmt; ///< sample format, currenly unused
de6d9b64
FB
541
542 /* the following data should not be initialized */
64863965
MN
543 int frame_size; ///< in samples, initialized when calling 'init'
544 int frame_number; ///< audio or video frame number
545 int real_pict_num; ///< returns the real picture number of previous encoded frame
1e491e29 546
b71901e6 547 /**
b71901e6 548 * number of frames the decoded output will be delayed relative to
64863965
MN
549 * the encoded input.
550 * - encoding: set by lavc.
551 * - decoding: unused
b71901e6
MN
552 */
553 int delay;
1ff662cc 554
64863965
MN
555 /* - encoding parameters */
556 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
557 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
b71901e6
MN
558
559 /**
64863965
MN
560 * minimum quantizer.
561 * - encoding: set by user.
562 * - decoding: unused
b71901e6
MN
563 */
564 int qmin;
565
566 /**
64863965
MN
567 * maximum quantizer.
568 * - encoding: set by user.
569 * - decoding: unused
b71901e6
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570 */
571 int qmax;
572
573 /**
64863965
MN
574 * maximum quantizer difference etween frames.
575 * - encoding: set by user.
576 * - decoding: unused
b71901e6
MN
577 */
578 int max_qdiff;
579
580 /**
64863965 581 * maximum number of b frames between non b frames.
b71901e6 582 * note: the output will be delayed by max_b_frames+1 relative to the input
64863965
MN
583 * - encoding: set by user.
584 * - decoding: unused
b71901e6
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585 */
586 int max_b_frames;
587
588 /**
64863965
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589 * qscale factor between ip and b frames.
590 * - encoding: set by user.
591 * - decoding: unused
b71901e6
MN
592 */
593 float b_quant_factor;
594
595 /** obsolete FIXME remove */
596 int rc_strategy;
8b4c7dbc 597 int b_frame_strategy;
9dbcbd92 598
b71901e6 599 /**
64863965
MN
600 * hurry up amount.
601 * - encoding: unused
602 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
b71901e6
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603 */
604 int hurry_up;
2417652e 605
de6d9b64 606 struct AVCodec *codec;
b71901e6 607
de6d9b64
FB
608 void *priv_data;
609
644d98a4 610 /* The following data is for RTP friendly coding */
1f6b6e50 611 /* By now only H.263/H.263+/MPEG4 coder honours this */
644d98a4
J
612 int rtp_mode; /* 1 for activate RTP friendly-mode */
613 /* highers numbers represent more error-prone */
614 /* enviroments, by now just "1" exist */
615
616 int rtp_payload_size; /* The size of the RTP payload, the coder will */
617 /* do it's best to deliver a chunk with size */
618 /* below rtp_payload_size, the chunk will start */
619 /* with a start code on some codecs like H.263 */
620 /* This doesn't take account of any particular */
621 /* headers inside the transmited RTP payload */
81401c1f
J
622
623
624 /* The RTP callcack: This function is called */
625 /* every time the encoder as a packet to send */
626 /* Depends on the encoder if the data starts */
627 /* with a Start Code (it should) H.263 does */
628 void (*rtp_callback)(void *data, int size, int packet_number);
629
098eefe1
MN
630 /* statistics, used for 2-pass encoding */
631 int mv_bits;
632 int header_bits;
633 int i_tex_bits;
634 int p_tex_bits;
635 int i_count;
636 int p_count;
637 int skip_count;
b71901e6
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638 int misc_bits;
639
640 /**
64863965
MN
641 * number of bits used for the previously encoded frame.
642 * - encoding: set by lavc
7004ffb3 643 * - decoding: unused
b71901e6 644 */
098eefe1 645 int frame_bits;
7004ffb3 646
b71901e6 647 /**
64863965
MN
648 * private data of the user, can be used to carry app specific stuff.
649 * - encoding: set by user
650 * - decoding: set by user
b71901e6
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651 */
652 void *opaque;
653
de6d9b64 654 char codec_name[32];
4a663d80
PG
655 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
656 enum CodecID codec_id; /* see CODEC_ID_xxx */
7004ffb3
MN
657
658 /**
659 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
660 * this is used to workaround some encoder bugs
bd5a6020 661 * - encoding: set by user, if not then the default based on codec_id will be used
7004ffb3
MN
662 * - decoding: set by user, will be converted to upper case by lavc during init
663 */
664 unsigned int codec_tag;
92ba5ffb 665
b71901e6 666 /**
64863965
MN
667 * workaround bugs in encoders which sometimes cannot be detected automatically.
668 * - encoding: unused
669 * - decoding: set by user
b71901e6
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670 */
671 int workaround_bugs;
64863965 672#define FF_BUG_AUTODETECT 1 ///< autodetection
4d2858de
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673#define FF_BUG_OLD_MSMPEG4 2
674#define FF_BUG_XVID_ILACE 4
675#define FF_BUG_UMP4 8
676#define FF_BUG_NO_PADDING 16
677#define FF_BUG_AC_VLC 32
03e93d35 678#define FF_BUG_QPEL_CHROMA 64
db794953 679#define FF_BUG_STD_QPEL 128
36df8805 680#define FF_BUG_QPEL_CHROMA2 256
c40c3482 681#define FF_BUG_DIRECT_BLOCKSIZE 512
1c6dcb0f 682#define FF_BUG_EDGE 1024
4d2858de
MN
683//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
684
b71901e6 685 /**
64863965
MN
686 * luma single coeff elimination threshold.
687 * - encoding: set by user
688 * - decoding: unused
b71901e6 689 */
1f6b6e50 690 int luma_elim_threshold;
b71901e6
MN
691
692 /**
64863965
MN
693 * chroma single coeff elimination threshold.
694 * - encoding: set by user
695 * - decoding: unused
b71901e6 696 */
1f6b6e50 697 int chroma_elim_threshold;
b71901e6
MN
698
699 /**
64863965
MN
700 * strictly follow the std (MPEG4, ...).
701 * - encoding: set by user
702 * - decoding: unused
b71901e6
MN
703 */
704 int strict_std_compliance;
705
706 /**
64863965 707 * qscale offset between ip and b frames.
b3a391e8
MN
708 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
709 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
64863965
MN
710 * - encoding: set by user.
711 * - decoding: unused
b71901e6
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712 */
713 float b_quant_offset;
714
715 /**
ce3bcaed 716 * error resilience higher values will detect more errors but may missdetect
64863965
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717 * some more or less valid parts as errors.
718 * - encoding: unused
719 * - decoding: set by user
b71901e6 720 */
1f6b6e50 721 int error_resilience;
ce3bcaed
MN
722#define FF_ER_CAREFULL 1
723#define FF_ER_COMPLIANT 2
724#define FF_ER_AGGRESSIVE 3
725#define FF_ER_VERY_AGGRESSIVE 4
ae72cda6 726
6b72ac63 727 /**
1e491e29
MN
728 * called at the beginning of each frame to get a buffer for it.
729 * if pic.reference is set then the frame will be read later by lavc
3bb07d61 730 * width and height should be rounded up to the next multiple of 16
64863965
MN
731 * - encoding: unused
732 * - decoding: set by lavc, user can override
b71901e6 733 */
492cd3a9 734 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
b71901e6
MN
735
736 /**
1e491e29
MN
737 * called to release buffers which where allocated with get_buffer.
738 * a released buffer can be reused in get_buffer()
739 * pic.data[*] must be set to NULL
64863965
MN
740 * - encoding: unused
741 * - decoding: set by lavc, user can override
b71901e6 742 */
492cd3a9 743 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
0fd90455 744
b71901e6 745 /**
64863965
MN
746 * is 1 if the decoded stream contains b frames, 0 otherwise.
747 * - encoding: unused
748 * - decoding: set by lavc
b71901e6
MN
749 */
750 int has_b_frames;
b71901e6 751
64863965 752 int block_align; ///< used by some WAV based audio codecs
ce980a95 753
64863965 754 int parse_only; /* - decoding only: if true, only parsing is done
917e06c8
FB
755 (function avcodec_parse_frame()). The frame
756 data is returned. Only MPEG codecs support this now. */
ce980a95 757
b71901e6 758 /**
e4eadb4b 759 * 0-> h263 quant 1-> mpeg quant.
64863965
MN
760 * - encoding: set by user.
761 * - decoding: unused
b71901e6
MN
762 */
763 int mpeg_quant;
ce980a95 764
b71901e6 765 /**
64863965
MN
766 * pass1 encoding statistics output buffer.
767 * - encoding: set by lavc
768 * - decoding: unused
b71901e6 769 */
64863965 770 char *stats_out;
b71901e6
MN
771
772 /**
773 * pass2 encoding statistics input buffer.
774 * concatenated stuff from stats_out of pass1 should be placed here
64863965
MN
775 * - encoding: allocated/set/freed by user
776 * - decoding: unused
b71901e6
MN
777 */
778 char *stats_in;
779
780 /**
64863965 781 * ratecontrol qmin qmax limiting method.
b71901e6 782 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
64863965
MN
783 * - encoding: set by user.
784 * - decoding: unused
b71901e6 785 */
ce980a95 786 float rc_qsquish;
b71901e6 787
ce980a95
MN
788 float rc_qmod_amp;
789 int rc_qmod_freq;
b71901e6
MN
790
791 /**
64863965
MN
792 * ratecontrol override, see RcOverride.
793 * - encoding: allocated/set/freed by user.
794 * - decoding: unused
b71901e6 795 */
ce980a95
MN
796 RcOverride *rc_override;
797 int rc_override_count;
b71901e6
MN
798
799 /**
64863965
MN
800 * rate control equation.
801 * - encoding: set by user
802 * - decoding: unused
b71901e6 803 */
ce980a95 804 char *rc_eq;
b71901e6
MN
805
806 /**
64863965
MN
807 * maximum bitrate.
808 * - encoding: set by user.
809 * - decoding: unused
b71901e6 810 */
ce980a95 811 int rc_max_rate;
b71901e6
MN
812
813 /**
64863965
MN
814 * minimum bitrate.
815 * - encoding: set by user.
816 * - decoding: unused
b71901e6 817 */
ce980a95 818 int rc_min_rate;
b71901e6
MN
819
820 /**
64863965
MN
821 * decoder bitstream buffer size.
822 * - encoding: set by user.
823 * - decoding: unused
b71901e6 824 */
ce980a95
MN
825 int rc_buffer_size;
826 float rc_buffer_aggressivity;
b71901e6
MN
827
828 /**
64863965
MN
829 * qscale factor between p and i frames.
830 * - encoding: set by user.
831 * - decoding: unused
b71901e6
MN
832 */
833 float i_quant_factor;
834
835 /**
64863965 836 * qscale offset between p and i frames.
b3a391e8
MN
837 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
838 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
64863965
MN
839 * - encoding: set by user.
840 * - decoding: unused
b71901e6
MN
841 */
842 float i_quant_offset;
843
844 /**
64863965
MN
845 * initial complexity for pass1 ratecontrol.
846 * - encoding: set by user.
847 * - decoding: unused
b71901e6 848 */
ce980a95 849 float rc_initial_cplx;
917e06c8 850
b71901e6 851 /**
64863965
MN
852 * dct algorithm, see FF_DCT_* below.
853 * - encoding: set by user
854 * - decoding: unused
b71901e6 855 */
28db7fce 856 int dct_algo;
c7e07931 857#define FF_DCT_AUTO 0
28db7fce 858#define FF_DCT_FASTINT 1
c7e07931
MO
859#define FF_DCT_INT 2
860#define FF_DCT_MMX 3
861#define FF_DCT_MLIB 4
05c4072b 862#define FF_DCT_ALTIVEC 5
c5d309f2
MN
863
864 /**
64863965
MN
865 * luminance masking (0-> disabled).
866 * - encoding: set by user
867 * - decoding: unused
c5d309f2
MN
868 */
869 float lumi_masking;
870
871 /**
64863965
MN
872 * temporary complexity masking (0-> disabled).
873 * - encoding: set by user
874 * - decoding: unused
c5d309f2
MN
875 */
876 float temporal_cplx_masking;
877
878 /**
64863965
MN
879 * spatial complexity masking (0-> disabled).
880 * - encoding: set by user
881 * - decoding: unused
c5d309f2
MN
882 */
883 float spatial_cplx_masking;
884
885 /**
64863965
MN
886 * p block masking (0-> disabled).
887 * - encoding: set by user
888 * - decoding: unused
c5d309f2
MN
889 */
890 float p_masking;
15415af4 891
5e746b99 892 /**
64863965
MN
893 * darkness masking (0-> disabled).
894 * - encoding: set by user
895 * - decoding: unused
5e746b99
MN
896 */
897 float dark_masking;
0c2dd16e 898
3a694b04
NK
899
900 /* for binary compatibility */
901 int unused;
902
0c2dd16e 903 /**
64863965
MN
904 * idct algorithm, see FF_IDCT_* below.
905 * - encoding: set by user
906 * - decoding: set by user
2ad1516a
MN
907 */
908 int idct_algo;
909#define FF_IDCT_AUTO 0
910#define FF_IDCT_INT 1
911#define FF_IDCT_SIMPLE 2
912#define FF_IDCT_SIMPLEMMX 3
913#define FF_IDCT_LIBMPEG2MMX 4
914#define FF_IDCT_PS2 5
915#define FF_IDCT_MLIB 6
916#define FF_IDCT_ARM 7
05c4072b 917#define FF_IDCT_ALTIVEC 8
b82cdc72 918#define FF_IDCT_SH4 9
bd7d1ea7 919#define FF_IDCT_SIMPLEARM 10
2ad1516a 920
144f0625 921 /**
64863965
MN
922 * slice count.
923 * - encoding: set by lavc
924 * - decoding: set by user (or 0)
144f0625
MN
925 */
926 int slice_count;
927 /**
64863965
MN
928 * slice offsets in the frame in bytes.
929 * - encoding: set/allocated by lavc
930 * - decoding: set/allocated by user (or NULL)
144f0625
MN
931 */
932 int *slice_offset;
933
4d2858de 934 /**
64863965
MN
935 * error concealment flags.
936 * - encoding: unused
937 * - decoding: set by user
4d2858de
MN
938 */
939 int error_concealment;
940#define FF_EC_GUESS_MVS 1
941#define FF_EC_DEBLOCK 2
942
6b72ac63 943 /**
bec89a84 944 * dsp_mask could be add used to disable unwanted CPU features
8350df97 945 * CPU features (i.e. MMX, SSE. ...)
bec89a84
ZK
946 *
947 * with FORCE flag you may instead enable given CPU features
948 * (Dangerous: usable in case of misdetection, improper usage however will
949 * result into program crash)
950 */
951 unsigned dsp_mask;
952#define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
953 /* lower 16 bits - CPU features */
954#ifdef HAVE_MMX
955#define FF_MM_MMX 0x0001 /* standard MMX */
956#define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
957#define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
958#define FF_MM_SSE 0x0008 /* SSE functions */
959#define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
960#endif /* HAVE_MMX */
11f18faf
MN
961
962 /**
64863965
MN
963 * bits per sample/pixel from the demuxer (needed for huffyuv).
964 * - encoding: set by lavc
965 * - decoding: set by user
11f18faf
MN
966 */
967 int bits_per_sample;
968
969 /**
64863965
MN
970 * prediction method (needed for huffyuv).
971 * - encoding: set by user
972 * - decoding: unused
11f18faf
MN
973 */
974 int prediction_method;
975#define FF_PRED_LEFT 0
976#define FF_PRED_PLANE 1
977#define FF_PRED_MEDIAN 2
5d3cea3a
MN
978
979 /**
64863965
MN
980 * aspect ratio (0 if unknown).
981 * - encoding: set by user.
982 * - decoding: set by lavc.
5d3cea3a
MN
983 */
984 float aspect_ratio;
1e491e29
MN
985
986 /**
64863965
MN
987 * the picture in the bitstream.
988 * - encoding: set by lavc
989 * - decoding: set by lavc
1e491e29 990 */
492cd3a9 991 AVFrame *coded_frame;
c8c437bc
MN
992
993 /**
64863965
MN
994 * debug.
995 * - encoding: set by user.
996 * - decoding: set by user.
c8c437bc
MN
997 */
998 int debug;
999#define FF_DEBUG_PICT_INFO 1
1000#define FF_DEBUG_RC 2
1001#define FF_DEBUG_BITSTREAM 4
1002#define FF_DEBUG_MB_TYPE 8
1003#define FF_DEBUG_QP 16
1004#define FF_DEBUG_MV 32
41773b73
MN
1005#define FF_DEBUG_VIS_MV 0x00000040
1006#define FF_DEBUG_SKIP 0x00000080
1007#define FF_DEBUG_STARTCODE 0x00000100
1008#define FF_DEBUG_PTS 0x00000200
46b4feec 1009#define FF_DEBUG_ER 0x00000400
0da71265 1010#define FF_DEBUG_MMCO 0x00000800
8fc6c2b5 1011#define FF_DEBUG_BUGS 0x00001000
140cb663
MN
1012
1013 /**
64863965
MN
1014 * error.
1015 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1016 * - decoding: unused
140cb663
MN
1017 */
1018 uint64_t error[4];
17a70fde
MN
1019
1020 /**
64863965
MN
1021 * minimum MB quantizer.
1022 * - encoding: set by user.
1023 * - decoding: unused
17a70fde
MN
1024 */
1025 int mb_qmin;
1026
1027 /**
64863965
MN
1028 * maximum MB quantizer.
1029 * - encoding: set by user.
1030 * - decoding: unused
17a70fde
MN
1031 */
1032 int mb_qmax;
1457ab52
MN
1033
1034 /**
64863965
MN
1035 * motion estimation compare function.
1036 * - encoding: set by user.
1037 * - decoding: unused
1457ab52
MN
1038 */
1039 int me_cmp;
1040 /**
64863965
MN
1041 * subpixel motion estimation compare function.
1042 * - encoding: set by user.
1043 * - decoding: unused
1457ab52
MN
1044 */
1045 int me_sub_cmp;
1046 /**
64863965
MN
1047 * macroblock compare function (not supported yet).
1048 * - encoding: set by user.
1049 * - decoding: unused
1457ab52
MN
1050 */
1051 int mb_cmp;
1052#define FF_CMP_SAD 0
1053#define FF_CMP_SSE 1
1054#define FF_CMP_SATD 2
1055#define FF_CMP_DCT 3
1056#define FF_CMP_PSNR 4
1057#define FF_CMP_BIT 5
1058#define FF_CMP_RD 6
1059#define FF_CMP_ZERO 7
1060#define FF_CMP_CHROMA 256
1061
1062 /**
64863965
MN
1063 * ME diamond size & shape.
1064 * - encoding: set by user.
1065 * - decoding: unused
1457ab52
MN
1066 */
1067 int dia_size;
b07a5980
MN
1068
1069 /**
64863965
MN
1070 * amount of previous MV predictors (2a+1 x 2a+1 square).
1071 * - encoding: set by user.
1072 * - decoding: unused
b07a5980
MN
1073 */
1074 int last_predictor_count;
70ac76c0 1075
f5fb6b34 1076 /**
64863965
MN
1077 * pre pass for motion estimation.
1078 * - encoding: set by user.
1079 * - decoding: unused
f5fb6b34
MN
1080 */
1081 int pre_me;
b07a5980 1082
70ac76c0 1083 /**
64863965
MN
1084 * motion estimation pre pass compare function.
1085 * - encoding: set by user.
1086 * - decoding: unused
70ac76c0
MN
1087 */
1088 int me_pre_cmp;
826f429a 1089
70ac76c0 1090 /**
64863965
MN
1091 * ME pre pass diamond size & shape.
1092 * - encoding: set by user.
1093 * - decoding: unused
70ac76c0
MN
1094 */
1095 int pre_dia_size;
1096
826f429a 1097 /**
64863965
MN
1098 * subpel ME quality.
1099 * - encoding: set by user.
1100 * - decoding: unused
826f429a
MN
1101 */
1102 int me_subpel_quality;
1103
a33c7159 1104 /**
64863965 1105 * callback to negotiate the pixelFormat.
a33c7159
MN
1106 * @param fmt is the list of formats which are supported by the codec,
1107 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1108 * the first is allways the native one
1109 * @return the choosen format
64863965
MN
1110 * - encoding: unused
1111 * - decoding: set by user, if not set then the native format will always be choosen
a33c7159
MN
1112 */
1113 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
e2f9490e
FB
1114
1115 /**
1116 * DTG active format information (additionnal aspect ratio
1117 * information only used in DVB MPEG2 transport streams). 0 if
1118 * not set.
1119 *
64863965
MN
1120 * - encoding: unused.
1121 * - decoding: set by decoder
e2f9490e
FB
1122 */
1123 int dtg_active_format;
1124#define FF_DTG_AFD_SAME 8
1125#define FF_DTG_AFD_4_3 9
1126#define FF_DTG_AFD_16_9 10
1127#define FF_DTG_AFD_14_9 11
1128#define FF_DTG_AFD_4_3_SP_14_9 13
1129#define FF_DTG_AFD_16_9_SP_14_9 14
1130#define FF_DTG_AFD_SP_4_3 15
1131
ebbcdc9a
MN
1132 /**
1133 * Maximum motion estimation search range in subpel units.
1134 * if 0 then no limit
1135 *
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1136 * - encoding: set by user.
1137 * - decoding: unused.
ebbcdc9a 1138 */
59e0ac8e 1139 int me_range;
ebbcdc9a 1140
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1141 /**
1142 * frame_rate_base.
1143 * for variable fps this is 1
1144 * - encoding: set by user.
1145 * - decoding: set by lavc.
1146 * @todo move this after frame_rate
1147 */
65f7062d 1148
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1149 int frame_rate_base;
1150 /**
1151 * intra quantizer bias.
1152 * - encoding: set by user.
1153 * - decoding: unused
1154 */
1155 int intra_quant_bias;
1156#define FF_DEFAULT_QUANT_BIAS 999999
1157
1158 /**
1159 * inter quantizer bias.
1160 * - encoding: set by user.
1161 * - decoding: unused
1162 */
1163 int inter_quant_bias;
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1164
1165 /**
1166 * color table ID.
1167 * - encoding: unused.
1168 * - decoding: which clrtable should be used for 8bit RGB images
1169 * table have to be stored somewhere FIXME
1170 */
1171 int color_table_id;
1984f635 1172
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1173 /**
1174 * internal_buffer count.
1175 * Dont touch, used by lavc default_get_buffer()
1176 */
1177 int internal_buffer_count;
1178
1179 /**
1180 * internal_buffers.
1181 * Dont touch, used by lavc default_get_buffer()
1182 */
1183 void *internal_buffer;
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1184
1185#define FF_QUALITY_SCALE 256
1186 /**
1187 * global quality for codecs which cannot change it per frame.
1188 * this should be proportional to MPEG1/2/4 qscale.
1189 * - encoding: set by user.
1190 * - decoding: unused
1191 */
1192 int global_quality;
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1193
1194#define FF_CODER_TYPE_VLC 0
1195#define FF_CODER_TYPE_AC 1
1196 /**
1197 * coder type
1198 * - encoding: set by user.
1199 * - decoding: unused
1200 */
1201 int coder_type;
1202
1203 /**
1204 * context model
1205 * - encoding: set by user.
1206 * - decoding: unused
1207 */
1208 int context_model;
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1209
1210 /**
1211 * slice flags
1212 * - encoding: unused
1213 * - decoding: set by user.
1214 */
1215 int slice_flags;
1216#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1217#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1218#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1219
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1220 /**
1221 * XVideo Motion Acceleration
1222 * - encoding: forbidden
1223 * - decoding: set by decoder
1224 */
1225 int xvmc_acceleration;
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1226
1227 /**
1228 * macroblock decision mode
1229 * - encoding: set by user.
1230 * - decoding: unused
1231 */
1232 int mb_decision;
1233#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1234#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1235#define FF_MB_DECISION_RD 2 ///< rate distoration
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1236
1237 /**
1238 * custom intra quantization matrix
1239 * - encoding: set by user, can be NULL
1240 * - decoding: set by lavc
1241 */
1242 uint16_t *intra_matrix;
1243
1244 /**
1245 * custom inter quantization matrix
1246 * - encoding: set by user, can be NULL
1247 * - decoding: set by lavc
1248 */
1249 uint16_t *inter_matrix;
7d1c3fc1 1250
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1251 /**
1252 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1253 * this is used to workaround some encoder bugs
1254 * - encoding: unused
1255 * - decoding: set by user, will be converted to upper case by lavc during init
1256 */
1257 unsigned int stream_codec_tag;
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1258
1259 /**
1260 * scene change detection threshold.
1261 * 0 is default, larger means fewer detected scene changes
1262 * - encoding: set by user.
1263 * - decoding: unused
1264 */
1265 int scenechange_threshold;
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1266} AVCodecContext;
1267
97d96aaa 1268
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1269/**
1270 * AVOption.
1271 */
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1272typedef struct AVOption {
1273 /** options' name */
1274 const char *name; /* if name is NULL, it indicates a link to next */
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1275 /** short English text help or const struct AVOption* subpointer */
1276 const char *help; // const struct AVOption* sub;
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1277 /** offset to context structure where the parsed value should be stored */
1278 int offset;
1279 /** options' type */
1280 int type;
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1281#define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1282#define FF_OPT_TYPE_DOUBLE 2 ///< double
1283#define FF_OPT_TYPE_INT 3 ///< integer
1284#define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1285#define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
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1286//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1287#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1288#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1289 /** min value (min == max -> no limits) */
1290 double min;
1291 /** maximum value for double/int */
1292 double max;
1293 /** default boo [0,1]l/double/int value */
1294 double defval;
1295 /**
1296 * default string value (with optional semicolon delimited extra option-list
1297 * i.e. option1;option2;option3
1298 * defval might select other then first argument as default
1299 */
1300 const char *defstr;
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1301#define FF_OPT_MAX_DEPTH 10
1302} AVOption;
1303
64863965 1304/**
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1305 * Parse option(s) and sets fields in passed structure
1306 * @param strct structure where the parsed results will be written
1307 * @param list list with AVOptions
1308 * @param opts string with options for parsing
1309 */
1310int avoption_parse(void* strct, const AVOption* list, const char* opts);
1311
1312
1313/**
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1314 * AVCodec.
1315 */
de6d9b64 1316typedef struct AVCodec {
18f77016 1317 const char *name;
5d234974 1318 enum CodecType type;
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1319 int id;
1320 int priv_data_size;
1321 int (*init)(AVCodecContext *);
0c1a9eda 1322 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
de6d9b64 1323 int (*close)(AVCodecContext *);
0fd90455 1324 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
0c1a9eda 1325 uint8_t *buf, int buf_size);
bf89e6b1 1326 int capabilities;
97d96aaa 1327 const AVOption *options;
de6d9b64 1328 struct AVCodec *next;
7a06ff14 1329 void (*flush)(AVCodecContext *);
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1330} AVCodec;
1331
97d96aaa 1332/**
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1333 * four components are given, that's all.
1334 * the last component is alpha
1335 */
de6d9b64 1336typedef struct AVPicture {
0c1a9eda 1337 uint8_t *data[4];
cd394651 1338 int linesize[4]; ///< number of bytes per line
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1339} AVPicture;
1340
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1341/**
1342 * AVPaletteControl
1343 * This structure defines a method for communicating palette changes
1344 * between and demuxer and a decoder.
1345 */
1346typedef struct AVPaletteControl {
1347
1348 /* demuxer sets this to 1 to indicate the palette has changed;
1349 * decoder resets to 0 */
1350 int palette_changed;
1351
1352 /* 256 3-byte RGB palette entries; the components should be
1353 * formatted in the buffer as "RGBRGB..." and should be scaled to
1354 * 8 bits if they originally represented 6-bit VGA palette
1355 * components */
1356 unsigned char palette[256 * 3];
1357
1358} AVPaletteControl;
1359
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1360extern AVCodec ac3_encoder;
1361extern AVCodec mp2_encoder;
9d36bdc9 1362extern AVCodec mp3lame_encoder;
81e0d0b4 1363extern AVCodec oggvorbis_encoder;
29d48296 1364extern AVCodec faac_encoder;
de6d9b64 1365extern AVCodec mpeg1video_encoder;
029911d1 1366extern AVCodec mpeg2video_encoder;
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1367extern AVCodec h263_encoder;
1368extern AVCodec h263p_encoder;
d4f5d74a 1369extern AVCodec flv_encoder;
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1370extern AVCodec rv10_encoder;
1371extern AVCodec mjpeg_encoder;
b1e6b355 1372extern AVCodec ljpeg_encoder;
bf89e6b1 1373extern AVCodec mpeg4_encoder;
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1374extern AVCodec msmpeg4v1_encoder;
1375extern AVCodec msmpeg4v2_encoder;
1376extern AVCodec msmpeg4v3_encoder;
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1377extern AVCodec wmv1_encoder;
1378extern AVCodec wmv2_encoder;
11f18faf 1379extern AVCodec huffyuv_encoder;
0da71265 1380extern AVCodec h264_encoder;
3d2e8cce 1381extern AVCodec asv1_encoder;
9b56edf5 1382extern AVCodec asv2_encoder;
be3564ed 1383extern AVCodec vcr1_encoder;
5e20f836 1384extern AVCodec ffv1_encoder;
c3bf0288 1385extern AVCodec mdec_encoder;
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1386
1387extern AVCodec h263_decoder;
bf89e6b1 1388extern AVCodec mpeg4_decoder;
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1389extern AVCodec msmpeg4v1_decoder;
1390extern AVCodec msmpeg4v2_decoder;
1391extern AVCodec msmpeg4v3_decoder;
e1a9dbff 1392extern AVCodec wmv1_decoder;
0151a6f5 1393extern AVCodec wmv2_decoder;
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1394extern AVCodec mpeg1video_decoder;
1395extern AVCodec mpeg2video_decoder;
fb364ada 1396extern AVCodec mpeg_xvmc_decoder;
de6d9b64 1397extern AVCodec h263i_decoder;
d4f5d74a 1398extern AVCodec flv_decoder;
de6d9b64 1399extern AVCodec rv10_decoder;
be8ffec9 1400extern AVCodec svq1_decoder;
8b82a956 1401extern AVCodec svq3_decoder;
020fcc94 1402extern AVCodec dvvideo_decoder;
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1403extern AVCodec wmav1_decoder;
1404extern AVCodec wmav2_decoder;
4e66ab3b 1405extern AVCodec mjpeg_decoder;
b135d9fb 1406extern AVCodec mjpegb_decoder;
4b1f4f23 1407extern AVCodec mp2_decoder;
a96b68b7 1408extern AVCodec mp3_decoder;
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1409extern AVCodec mace3_decoder;
1410extern AVCodec mace6_decoder;
11f18faf 1411extern AVCodec huffyuv_decoder;
3aca208a 1412extern AVCodec oggvorbis_decoder;
f70f7c6d 1413extern AVCodec cyuv_decoder;
0da71265 1414extern AVCodec h264_decoder;
deabd4fd 1415extern AVCodec indeo3_decoder;
d86053a4 1416extern AVCodec vp3_decoder;
891f64b3 1417extern AVCodec amr_nb_decoder;
bc634f6f 1418extern AVCodec amr_nb_encoder;
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1419extern AVCodec amr_wb_encoder;
1420extern AVCodec amr_wb_decoder;
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1421extern AVCodec aac_decoder;
1422extern AVCodec mpeg4aac_decoder;
3d2e8cce 1423extern AVCodec asv1_decoder;
9b56edf5 1424extern AVCodec asv2_decoder;
be3564ed 1425extern AVCodec vcr1_decoder;
3aff069b 1426extern AVCodec cljr_decoder;
5e20f836 1427extern AVCodec ffv1_decoder;
8809cfee 1428extern AVCodec fourxm_decoder;
c3bf0288 1429extern AVCodec mdec_decoder;
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1430extern AVCodec roq_decoder;
1431extern AVCodec interplay_video_decoder;
9937e686 1432extern AVCodec xan_wc3_decoder;
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1433extern AVCodec rpza_decoder;
1434extern AVCodec cinepak_decoder;
1435extern AVCodec msrle_decoder;
1436extern AVCodec msvideo1_decoder;
6955a882 1437extern AVCodec vqa_decoder;
4120a53a 1438extern AVCodec idcin_decoder;
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NK
1439extern AVCodec ra_144_decoder;
1440extern AVCodec ra_288_decoder;
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MM
1441extern AVCodec roq_dpcm_decoder;
1442extern AVCodec interplay_dpcm_decoder;
9937e686 1443extern AVCodec xan_dpcm_decoder;
de6d9b64 1444
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FB
1445/* pcm codecs */
1446#define PCM_CODEC(id, name) \
1447extern AVCodec name ## _decoder; \
f11d3f23 1448extern AVCodec name ## _encoder
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FB
1449
1450PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1451PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1452PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1453PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1454PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1455PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1456PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1457PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1458
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FR
1459/* adpcm codecs */
1460
1461PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1462PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
9937e686
MM
1463PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1464PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2fdf638b 1465PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
0147f198 1466PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
4b465299 1467PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
0147f198 1468
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FB
1469#undef PCM_CODEC
1470
1471/* dummy raw video codec */
63167088
RS
1472extern AVCodec rawvideo_encoder;
1473extern AVCodec rawvideo_decoder;
de6d9b64
FB
1474
1475/* the following codecs use external GPL libs */
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1476extern AVCodec ac3_decoder;
1477
1478/* resample.c */
1479
1480struct ReSampleContext;
1481
1482typedef struct ReSampleContext ReSampleContext;
1483
1484ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1485 int output_rate, int input_rate);
1486int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1487void audio_resample_close(ReSampleContext *s);
1488
1489/* YUV420 format is assumed ! */
1490
1491struct ImgReSampleContext;
1492
1493typedef struct ImgReSampleContext ImgReSampleContext;
1494
1495ImgReSampleContext *img_resample_init(int output_width, int output_height,
1496 int input_width, int input_height);
ab6d194a
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1497
1498ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1499 int iwidth, int iheight,
1500 int topBand, int bottomBand,
1501 int leftBand, int rightBand);
1502
de6d9b64 1503void img_resample(ImgReSampleContext *s,
da64ecc3 1504 AVPicture *output, const AVPicture *input);
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FB
1505
1506void img_resample_close(ImgReSampleContext *s);
1507
0c1a9eda 1508int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2d1a4094 1509 int pix_fmt, int width, int height);
da64ecc3 1510int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
63167088 1511 unsigned char *dest, int dest_size);
219b06c6 1512int avpicture_get_size(int pix_fmt, int width, int height);
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1513void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1514const char *avcodec_get_pix_fmt_name(int pix_fmt);
63167088 1515enum PixelFormat avcodec_get_pix_fmt(const char* name);
219b06c6 1516
fab21997
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1517#define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1518#define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1519#define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1520#define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1521#define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1522#define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1523
1524int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1525 int has_alpha);
1526int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1527 int has_alpha, int *loss_ptr);
1528
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1529#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1530#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
da64ecc3
DH
1531int img_get_alpha_info(const AVPicture *src,
1532 int pix_fmt, int width, int height);
0469baf1 1533
219b06c6
FB
1534/* convert among pixel formats */
1535int img_convert(AVPicture *dst, int dst_pix_fmt,
da64ecc3 1536 const AVPicture *src, int pix_fmt,
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FB
1537 int width, int height);
1538
1539/* deinterlace a picture */
da64ecc3 1540int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
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FB
1541 int pix_fmt, int width, int height);
1542
1543/* external high level API */
1544
1545extern AVCodec *first_avcodec;
1546
156e5023 1547/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 1548unsigned avcodec_version(void);
8bceb6af 1549/* returns LIBAVCODEC_BUILD constant */
51a49663 1550unsigned avcodec_build(void);
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1551void avcodec_init(void);
1552
1553void register_avcodec(AVCodec *format);
1554AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 1555AVCodec *avcodec_find_encoder_by_name(const char *name);
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FB
1556AVCodec *avcodec_find_decoder(enum CodecID id);
1557AVCodec *avcodec_find_decoder_by_name(const char *name);
1558void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1559
1e491e29 1560void avcodec_get_context_defaults(AVCodecContext *s);
7ffbb60e 1561AVCodecContext *avcodec_alloc_context(void);
492cd3a9 1562AVFrame *avcodec_alloc_frame(void);
1e491e29 1563
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1564int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1565void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
d90cf87b 1566void avcodec_default_free_buffers(AVCodecContext *s);
1e491e29 1567
7a06ff14
MN
1568/**
1569 * opens / inits the AVCodecContext.
1570 * not thread save!
1571 */
de6d9b64 1572int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
7a06ff14 1573
0c1a9eda 1574int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 1575 int *frame_size_ptr,
0c1a9eda 1576 uint8_t *buf, int buf_size);
492cd3a9 1577int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 1578 int *got_picture_ptr,
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1579 uint8_t *buf, int buf_size);
1580int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
917e06c8 1581 int *data_size_ptr,
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1582 uint8_t *buf, int buf_size);
1583int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64 1584 const short *samples);
0c1a9eda 1585int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 1586 const AVFrame *pict);
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FB
1587
1588int avcodec_close(AVCodecContext *avctx);
1589
1590void avcodec_register_all(void);
a96b68b7 1591
1c2a8c7f
MN
1592void avcodec_flush_buffers(AVCodecContext *avctx);
1593
14bea432 1594/* misc usefull functions */
d8085ea7
MN
1595
1596/**
1597 * returns a single letter to describe the picture type
1598 */
1599char av_get_pict_type_char(int pict_type);
1600
14bea432
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1601/**
1602 * reduce a fraction.
1603 * this is usefull for framerate calculations
1604 * @param max the maximum allowed for dst_nom & dst_den
1605 * @return 1 if exact, 0 otherwise
1606 */
1607int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1608
1609/**
1610 * rescale a 64bit integer.
1611 * a simple a*b/c isnt possible as it can overflow
1612 */
1613int64_t av_rescale(int64_t a, int b, int c);
628d601b 1614
628d601b 1615
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1616/**
1617 * Interface for 0.5.0 version
1618 *
1619 * do not even think about it's usage for this moment
1620 */
1621
1622typedef struct {
64863965 1623 /// compressed size used from given memory buffer
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1624 int size;
1625 /// I/P/B frame type
1626 int frame_type;
1627} avc_enc_result_t;
1628
1629/**
1630 * Commands
1631 * order can't be changed - once it was defined
1632 */
1633typedef enum {
1634 // general commands
1635 AVC_OPEN_BY_NAME = 0xACA000,
1636 AVC_OPEN_BY_CODEC_ID,
1637 AVC_OPEN_BY_FOURCC,
1638 AVC_CLOSE,
1639
1640 AVC_FLUSH,
1641 // pin - struct { uint8_t* src, uint_t src_size }
1642 // pout - struct { AVPicture* img, consumed_bytes,
1643 AVC_DECODE,
1644 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1645 // pout - uint_t used_from_dest_size
1646 AVC_ENCODE,
1647
1648 // query/get video commands
1649 AVC_GET_VERSION = 0xACB000,
1650 AVC_GET_WIDTH,
1651 AVC_GET_HEIGHT,
1652 AVC_GET_DELAY,
1653 AVC_GET_QUANT_TABLE,
1654 // ...
1655
1656 // query/get audio commands
1657 AVC_GET_FRAME_SIZE = 0xABC000,
1658
1659 // maybe define some simple structure which
1660 // might be passed to the user - but they can't
1661 // contain any codec specific parts and these
1662 // calls are usualy necessary only few times
1663
1664 // set video commands
1665 AVC_SET_WIDTH = 0xACD000,
1666 AVC_SET_HEIGHT,
1667
1668 // set video encoding commands
1669 AVC_SET_FRAME_RATE = 0xACD800,
1670 AVC_SET_QUALITY,
1671 AVC_SET_HURRY_UP,
1672
1673 // set audio commands
1674 AVC_SET_SAMPLE_RATE = 0xACE000,
1675 AVC_SET_CHANNELS,
1676
1677} avc_cmd_t;
1678
1679/**
1680 * \param handle allocated private structure by libavcodec
1681 * for initialization pass NULL - will be returned pout
1682 * user is supposed to know nothing about its structure
1683 * \param cmd type of operation to be performed
1684 * \param pint input parameter
1685 * \param pout output parameter
1686 *
1687 * \returns command status - eventually for query command it might return
1688 * integer resulting value
1689 */
1690int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1691
544eb99c 1692/* memory */
e4eadb4b 1693void *av_malloc(unsigned int size);
18f77016 1694void *av_mallocz(unsigned int size);
8e1e6f31 1695void *av_realloc(void *ptr, unsigned int size);
544eb99c 1696void av_free(void *ptr);
8e1e6f31 1697char *av_strdup(const char *s);
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1698void __av_freep(void **ptr);
1699#define av_freep(p) __av_freep((void **)(p))
97d96aaa 1700void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
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1701/* for static data only */
1702/* call av_free_static to release all staticaly allocated tables */
628d601b 1703void av_free_static(void);
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1704void *__av_mallocz_static(void** location, unsigned int size);
1705#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
544eb99c 1706
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1707#ifdef __cplusplus
1708}
1709#endif
1710
a96b68b7 1711#endif /* AVCODEC_H */