CamStudio decoder, only 32 bit lzo mode is tested
[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
c11c2bc2 14#include "avutil.h"
4b813d5c 15#include <sys/types.h> /* size_t */
de6d9b64 16
5aa083ee 17//FIXME the following 2 really dont belong in here
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18#define FFMPEG_VERSION_INT 0x000409
19#define FFMPEG_VERSION "CVS"
7b7d86f1 20
bb270c08 21#define AV_STRINGIFY(s) AV_TOSTRING(s)
7b7d86f1 22#define AV_TOSTRING(s) #s
5aa083ee 23
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24#define LIBAVCODEC_VERSION_INT ((51<<16)+(0<<8)+0)
25#define LIBAVCODEC_VERSION 51.0.0
26#define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
5aa083ee 27
bb270c08 28#define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
ce2749d2 29
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30#define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
31#define AV_TIME_BASE 1000000
32#define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE}
9740beff 33
de6d9b64 34enum CodecID {
115329f1 35 CODEC_ID_NONE,
de6d9b64 36 CODEC_ID_MPEG1VIDEO,
dcedf586 37 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
fb364ada 38 CODEC_ID_MPEG2VIDEO_XVMC,
c6148de2 39 CODEC_ID_H261,
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40 CODEC_ID_H263,
41 CODEC_ID_RV10,
68b94c35 42 CODEC_ID_RV20,
de6d9b64 43 CODEC_ID_MJPEG,
b135d9fb 44 CODEC_ID_MJPEGB,
b1e6b355 45 CODEC_ID_LJPEG,
5e83dec4 46 CODEC_ID_SP5X,
5639729b 47 CODEC_ID_JPEGLS,
bf89e6b1 48 CODEC_ID_MPEG4,
de6d9b64 49 CODEC_ID_RAWVIDEO,
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50 CODEC_ID_MSMPEG4V1,
51 CODEC_ID_MSMPEG4V2,
52 CODEC_ID_MSMPEG4V3,
e1a9dbff 53 CODEC_ID_WMV1,
b50eef3a 54 CODEC_ID_WMV2,
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55 CODEC_ID_H263P,
56 CODEC_ID_H263I,
d4f5d74a 57 CODEC_ID_FLV1,
be8ffec9 58 CODEC_ID_SVQ1,
8b82a956 59 CODEC_ID_SVQ3,
020fcc94 60 CODEC_ID_DVVIDEO,
11f18faf 61 CODEC_ID_HUFFYUV,
f70f7c6d 62 CODEC_ID_CYUV,
0da71265 63 CODEC_ID_H264,
deabd4fd 64 CODEC_ID_INDEO3,
d86053a4 65 CODEC_ID_VP3,
f44ee2c3 66 CODEC_ID_THEORA,
3d2e8cce 67 CODEC_ID_ASV1,
9b56edf5 68 CODEC_ID_ASV2,
5e20f836 69 CODEC_ID_FFV1,
e2a7bb28 70 CODEC_ID_4XM,
be3564ed 71 CODEC_ID_VCR1,
3aff069b 72 CODEC_ID_CLJR,
c3bf0288 73 CODEC_ID_MDEC,
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74 CODEC_ID_ROQ,
75 CODEC_ID_INTERPLAY_VIDEO,
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76 CODEC_ID_XAN_WC3,
77 CODEC_ID_XAN_WC4,
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78 CODEC_ID_RPZA,
79 CODEC_ID_CINEPAK,
80 CODEC_ID_WS_VQA,
81 CODEC_ID_MSRLE,
82 CODEC_ID_MSVIDEO1,
4120a53a 83 CODEC_ID_IDCIN,
1dc1ed99 84 CODEC_ID_8BPS,
11e29a41 85 CODEC_ID_SMC,
42cad81a 86 CODEC_ID_FLIC,
9a4117d5 87 CODEC_ID_TRUEMOTION1,
fafa0b75 88 CODEC_ID_VMDVIDEO,
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89 CODEC_ID_MSZH,
90 CODEC_ID_ZLIB,
070ed1bc 91 CODEC_ID_QTRLE,
791e7b83 92 CODEC_ID_SNOW,
9d53d58e 93 CODEC_ID_TSCC,
d0a0bbd2 94 CODEC_ID_ULTI,
d08d7142 95 CODEC_ID_QDRAW,
ab711b3c 96 CODEC_ID_VIXL,
acfd8f0f 97 CODEC_ID_QPEG,
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98 CODEC_ID_XVID,
99 CODEC_ID_PNG,
100 CODEC_ID_PPM,
101 CODEC_ID_PBM,
102 CODEC_ID_PGM,
103 CODEC_ID_PGMYUV,
104 CODEC_ID_PAM,
f37b9768 105 CODEC_ID_FFVHUFF,
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106 CODEC_ID_RV30,
107 CODEC_ID_RV40,
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108 CODEC_ID_VC9,
109 CODEC_ID_WMV3,
9c7fb608 110 CODEC_ID_LOCO,
a8a15e9d 111 CODEC_ID_WNV1,
589f8220 112 CODEC_ID_AASC,
856dbbff 113 CODEC_ID_INDEO2,
b81f8949 114 CODEC_ID_FRAPS,
64af6168 115 CODEC_ID_TRUEMOTION2,
9fa62f2a 116 CODEC_ID_BMP,
e0f80bd7 117 CODEC_ID_CSCD,
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118
119 /* various pcm "codecs" */
17179d2d 120 CODEC_ID_PCM_S16LE= 0x10000,
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121 CODEC_ID_PCM_S16BE,
122 CODEC_ID_PCM_U16LE,
123 CODEC_ID_PCM_U16BE,
124 CODEC_ID_PCM_S8,
125 CODEC_ID_PCM_U8,
126 CODEC_ID_PCM_MULAW,
127 CODEC_ID_PCM_ALAW,
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128 CODEC_ID_PCM_S32LE,
129 CODEC_ID_PCM_S32BE,
130 CODEC_ID_PCM_U32LE,
131 CODEC_ID_PCM_U32BE,
132 CODEC_ID_PCM_S24LE,
133 CODEC_ID_PCM_S24BE,
134 CODEC_ID_PCM_U24LE,
135 CODEC_ID_PCM_U24BE,
136 CODEC_ID_PCM_S24DAUD,
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137
138 /* various adpcm codecs */
17179d2d 139 CODEC_ID_ADPCM_IMA_QT= 0x11000,
0147f198 140 CODEC_ID_ADPCM_IMA_WAV,
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141 CODEC_ID_ADPCM_IMA_DK3,
142 CODEC_ID_ADPCM_IMA_DK4,
2fdf638b 143 CODEC_ID_ADPCM_IMA_WS,
7d8379f2 144 CODEC_ID_ADPCM_IMA_SMJPEG,
0147f198 145 CODEC_ID_ADPCM_MS,
e2a7bb28 146 CODEC_ID_ADPCM_4XM,
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147 CODEC_ID_ADPCM_XA,
148 CODEC_ID_ADPCM_ADX,
7d8379f2 149 CODEC_ID_ADPCM_EA,
e5966052 150 CODEC_ID_ADPCM_G726,
b3bfb299 151 CODEC_ID_ADPCM_CT,
659c3692 152 CODEC_ID_ADPCM_SWF,
2ff4524e 153 CODEC_ID_ADPCM_YAMAHA,
891f64b3 154
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155 /* AMR */
156 CODEC_ID_AMR_NB= 0x12000,
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157 CODEC_ID_AMR_WB,
158
b8414bbd 159 /* RealAudio codecs*/
17179d2d 160 CODEC_ID_RA_144= 0x13000,
b8414bbd 161 CODEC_ID_RA_288,
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162
163 /* various DPCM codecs */
17179d2d 164 CODEC_ID_ROQ_DPCM= 0x14000,
3ef8be2b 165 CODEC_ID_INTERPLAY_DPCM,
9937e686 166 CODEC_ID_XAN_DPCM,
d08d7142 167 CODEC_ID_SOL_DPCM,
115329f1 168
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169 CODEC_ID_MP2= 0x15000,
170 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
171 CODEC_ID_AAC,
172 CODEC_ID_MPEG4AAC,
173 CODEC_ID_AC3,
174 CODEC_ID_DTS,
175 CODEC_ID_VORBIS,
176 CODEC_ID_DVAUDIO,
177 CODEC_ID_WMAV1,
178 CODEC_ID_WMAV2,
179 CODEC_ID_MACE3,
180 CODEC_ID_MACE6,
181 CODEC_ID_VMDAUDIO,
182 CODEC_ID_SONIC,
183 CODEC_ID_SONIC_LS,
ac2570a8 184 CODEC_ID_FLAC,
1ede228a 185 CODEC_ID_MP3ADU,
d2a7718d 186 CODEC_ID_MP3ON4,
85ad5695 187 CODEC_ID_SHORTEN,
5df8a0c6 188 CODEC_ID_ALAC,
034eeaa1 189 CODEC_ID_WESTWOOD_SND1,
115329f1 190 CODEC_ID_GSM,
d9b1c197 191 CODEC_ID_QDM2,
e0f7e329 192 CODEC_ID_COOK,
bf3027c8 193 CODEC_ID_TRUESPEECH,
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194
195 CODEC_ID_OGGTHEORA= 0x16000,
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196
197 /* subtitle codecs */
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198 CODEC_ID_DVD_SUBTITLE= 0x17000,
199 CODEC_ID_DVB_SUBTITLE,
200
17179d2d 201 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
985180a1 202 stream (only used by libavformat) */
de6d9b64 203};
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204
205/* CODEC_ID_MP3LAME is absolete */
206#define CODEC_ID_MP3LAME CODEC_ID_MP3
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207
208enum CodecType {
4a663d80 209 CODEC_TYPE_UNKNOWN = -1,
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210 CODEC_TYPE_VIDEO,
211 CODEC_TYPE_AUDIO,
985180a1 212 CODEC_TYPE_DATA,
240c1657 213 CODEC_TYPE_SUBTITLE,
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214};
215
64863965 216/**
115329f1 217 * Pixel format. Notes:
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218 *
219 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
220 * color is put together as:
221 * (A << 24) | (R << 16) | (G << 8) | B
222 * This is stored as BGRA on little endian CPU architectures and ARGB on
223 * big endian CPUs.
224 *
225 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
226 * image data is stored in AVFrame.data[0]. The palette is transported in
227 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
228 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
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229 * also endian-specific). Note also that the individual RGB palette
230 * components stored in AVFrame.data[1] should be in the range 0..255.
231 * This is important as many custom PAL8 video codecs that were designed
232 * to run on the IBM VGA graphics adapter use 6-bit palette components.
64863965 233 */
de6d9b64 234enum PixelFormat {
644a9262 235 PIX_FMT_NONE= -1,
cd394651 236 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
115329f1 237 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
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238 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
239 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
240 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
241 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
0f371e3e 242 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
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243 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
244 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
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245 PIX_FMT_RGB565, ///< always stored in cpu endianness
246 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
dab64ebc 247 PIX_FMT_GRAY8,
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248 PIX_FMT_MONOWHITE, ///< 0 is white
249 PIX_FMT_MONOBLACK, ///< 0 is black
250 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
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251 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
252 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
253 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
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254 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
255 PIX_FMT_XVMC_MPEG2_IDCT,
115329f1 256 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
f02be79d 257 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
dab64ebc 258 PIX_FMT_NB,
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259};
260
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261/* currently unused, may be used if 24/32 bits samples ever supported */
262enum SampleFormat {
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263 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
264 SAMPLE_FMT_S32, ///< signed 32 bits
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265 SAMPLE_FMT_FLT, ///< float
266 SAMPLE_FMT_DBL, ///< double
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267};
268
de6d9b64 269/* in bytes */
bc8d1857 270#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 271
d7425f59 272/**
cf713bb8 273 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
115329f1 274 * this is mainly needed because some optimized bitstream readers read
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275 * 32 or 64 bit at once and could read over the end<br>
276 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
277 * MPEG bitstreams could cause overread and segfault
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278 */
279#define FF_INPUT_BUFFER_PADDING_SIZE 8
280
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281/**
282 * minimum encoding buffer size.
283 * used to avoid some checks during header writing
284 */
285#define FF_MIN_BUFFER_SIZE 16384
286
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287/* motion estimation type, EPZS by default */
288enum Motion_Est_ID {
101bea5f 289 ME_ZERO = 1,
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290 ME_FULL,
291 ME_LOG,
292 ME_PHODS,
293 ME_EPZS,
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294 ME_X1,
295 ME_HEX,
296 ME_UMH,
297 ME_ITER,
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298};
299
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300enum AVDiscard{
301//we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
302 AVDISCARD_NONE =-16, ///< discard nothing
303 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
304 AVDISCARD_NONREF = 8, ///< discard all non reference
305 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
306 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
307 AVDISCARD_ALL = 48, ///< discard all
308};
309
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310typedef struct RcOverride{
311 int start_frame;
312 int end_frame;
313 int qscale; // if this is 0 then quality_factor will be used instead
314 float quality_factor;
315} RcOverride;
316
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317/* only for ME compatiblity with old apps */
318extern int motion_estimation_method;
319
4e00e76b 320#define FF_MAX_B_FRAMES 8
9dbcbd92 321
a949d72e 322/* encoding support
115329f1 323 these flags can be passed in AVCodecContext.flags before initing
bb628dae 324 Note: not everything is supported yet.
a949d72e 325*/
de6d9b64 326
115329f1 327#define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
dba019da 328#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
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329#define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
330#define CODEC_FLAG_GMC 0x0020 ///< use GMC
331#define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
332#define CODEC_FLAG_PART 0x0080 ///< use data partitioning
333/* parent program gurantees that the input for b-frame containing streams is not written to
9dbcbd92 334 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 335#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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336#define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
337#define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
338#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
339#define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
bb628dae 340#define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
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341#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
342#define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
d7425f59 343 of only at frame boundaries */
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344#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
345#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
3bb07d61 346#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
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347#define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
348#define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
349#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
350#define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
21e59552 351/* Fx : Flag for h263+ extra options */
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352#define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
353#define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
115329f1 354#define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
f2f6134b 355#define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
1f26c6f3 356#define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
dba019da 357#define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
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358#define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
359#define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
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360#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
361#define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
baaf3f46 362#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
303e50e6 363#define CODEC_FLAG_CLOSED_GOP 0x80000000
6fc5b059 364#define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
03581772 365#define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
09b0499f 366#define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
90ad92b3 367#define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
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368#define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow b-frames to be used as references
369#define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for b-frames
370#define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 multiple references per partition
371#define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform
372#define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip
373#define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters
374#define CODEC_FLAG2_BRDO 0x00000400 ///< b-frame rate-distortion optimization
6fc5b059 375
21e59552 376/* Unsupported options :
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377 * Syntax Arithmetic coding (SAC)
378 * Reference Picture Selection
379 * Independant Segment Decoding */
21e59552 380/* /Fx */
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381/* codec capabilities */
382
115329f1 383#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
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384/**
385 * Codec uses get_buffer() for allocating buffers.
386 * direct rendering method 1
387 */
388#define CODEC_CAP_DR1 0x0002
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389/* if 'parse_only' field is true, then avcodec_parse_frame() can be
390 used */
391#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 392#define CODEC_CAP_TRUNCATED 0x0008
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393/* codec can export data for HW decoding (XvMC) */
394#define CODEC_CAP_HWACCEL 0x0010
115329f1 395/**
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396 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
397 * if this is not set, the codec is guranteed to never be feeded with NULL data
398 */
6f824977 399#define CODEC_CAP_DELAY 0x0020
bf89e6b1 400
bb628dae 401//the following defines may change, don't expect compatibility if you use them
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402#define MB_TYPE_INTRA4x4 0x0001
403#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
404#define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
405#define MB_TYPE_16x16 0x0008
406#define MB_TYPE_16x8 0x0010
407#define MB_TYPE_8x16 0x0020
408#define MB_TYPE_8x8 0x0040
409#define MB_TYPE_INTERLACED 0x0080
410#define MB_TYPE_DIRECT2 0x0100 //FIXME
411#define MB_TYPE_ACPRED 0x0200
412#define MB_TYPE_GMC 0x0400
413#define MB_TYPE_SKIP 0x0800
414#define MB_TYPE_P0L0 0x1000
415#define MB_TYPE_P1L0 0x2000
416#define MB_TYPE_P0L1 0x4000
417#define MB_TYPE_P1L1 0x8000
418#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
419#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
420#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
421#define MB_TYPE_QUANT 0x00010000
422#define MB_TYPE_CBP 0x00020000
423//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
424
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425/**
426 * Pan Scan area.
427 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
428 */
429typedef struct AVPanScan{
430 /**
431 * id.
432 * - encoding: set by user.
433 * - decoding: set by lavc
434 */
435 int id;
436
437 /**
438 * width and height in 1/16 pel
439 * - encoding: set by user.
440 * - decoding: set by lavc
441 */
442 int width;
443 int height;
444
445 /**
446 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
447 * - encoding: set by user.
448 * - decoding: set by lavc
449 */
450 int16_t position[3][2];
451}AVPanScan;
452
492cd3a9 453#define FF_COMMON_FRAME \
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454 /**\
455 * pointer to the picture planes.\
456 * this might be different from the first allocated byte\
457 * - encoding: \
458 * - decoding: \
459 */\
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460 uint8_t *data[4];\
461 int linesize[4];\
462 /**\
32db2b1d 463 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
bb628dae 464 * this isn't used by lavc unless the default get/release_buffer() is used\
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465 * - encoding: \
466 * - decoding: \
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467 */\
468 uint8_t *base[4];\
469 /**\
470 * 1 -> keyframe, 0-> not\
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471 * - encoding: set by lavc\
472 * - decoding: set by lavc\
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473 */\
474 int key_frame;\
475\
476 /**\
0da71265 477 * picture type of the frame, see ?_TYPE below.\
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478 * - encoding: set by lavc for coded_picture (and set by user for input)\
479 * - decoding: set by lavc\
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480 */\
481 int pict_type;\
482\
483 /**\
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484 * presentation timestamp in time_base units (time when frame should be shown to user)\
485 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
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486 * - encoding: MUST be set by user\
487 * - decoding: set by lavc\
1e491e29 488 */\
be6784dc 489 int64_t pts;\
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490\
491 /**\
492 * picture number in bitstream order.\
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493 * - encoding: set by\
494 * - decoding: set by lavc\
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495 */\
496 int coded_picture_number;\
497 /**\
1e491e29 498 * picture number in display order.\
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499 * - encoding: set by\
500 * - decoding: set by lavc\
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501 */\
502 int display_picture_number;\
503\
504 /**\
158c7f05 505 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
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506 * - encoding: set by lavc for coded_picture (and set by user for input)\
507 * - decoding: set by lavc\
1e491e29 508 */\
158c7f05 509 int quality; \
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510\
511 /**\
512 * buffer age (1->was last buffer and dint change, 2->..., ...).\
158c7f05 513 * set to INT_MAX if the buffer has not been used yet \
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514 * - encoding: unused\
515 * - decoding: MUST be set by get_buffer()\
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516 */\
517 int age;\
518\
519 /**\
520 * is this picture used as reference\
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521 * - encoding: unused\
522 * - decoding: set by lavc (before get_buffer() call))\
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523 */\
524 int reference;\
525\
526 /**\
527 * QP table\
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528 * - encoding: unused\
529 * - decoding: set by lavc\
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530 */\
531 int8_t *qscale_table;\
532 /**\
533 * QP store stride\
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534 * - encoding: unused\
535 * - decoding: set by lavc\
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536 */\
537 int qstride;\
538\
539 /**\
540 * mbskip_table[mb]>=1 if MB didnt change\
541 * stride= mb_width = (width+15)>>4\
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542 * - encoding: unused\
543 * - decoding: set by lavc\
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544 */\
545 uint8_t *mbskip_table;\
546\
547 /**\
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548 * Motion vector table.\
549 * @code\
550 * example:\
551 * int mv_sample_log2= 4 - motion_subsample_log2;\
552 * int mb_width= (width+15)>>4;\
553 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
554 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
555 * @endcode\
a4d36c11 556 * - encoding: set by user\
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557 * - decoding: set by lavc\
558 */\
559 int16_t (*motion_val[2])[2];\
560\
561 /**\
562 * Macroblock type table\
563 * mb_type_base + mb_width + 2\
a4d36c11 564 * - encoding: set by user\
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565 * - decoding: set by lavc\
566 */\
567 uint32_t *mb_type;\
568\
569 /**\
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570 * log2 of the size of the block which a single vector in motion_val represents: \
571 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
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572 * - encoding: unused\
573 * - decoding: set by lavc\
574 */\
575 uint8_t motion_subsample_log2;\
576\
577 /**\
1e491e29 578 * for some private data of the user\
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579 * - encoding: unused\
580 * - decoding: set by user\
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581 */\
582 void *opaque;\
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583\
584 /**\
585 * error\
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586 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
587 * - decoding: unused\
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588 */\
589 uint64_t error[4];\
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590\
591 /**\
592 * type of the buffer (to keep track of who has to dealloc data[*])\
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593 * - encoding: set by the one who allocs it\
594 * - decoding: set by the one who allocs it\
3db320ea 595 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
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596 */\
597 int type;\
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598 \
599 /**\
600 * when decoding, this signal how much the picture must be delayed.\
601 * extra_delay = repeat_pict / (2*fps)\
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602 * - encoding: unused\
603 * - decoding: set by lavc\
2ec23b6d 604 */\
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605 int repeat_pict;\
606 \
607 /**\
608 * \
609 */\
610 int qscale_type;\
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611 \
612 /**\
613 * The content of the picture is interlaced.\
614 * - encoding: set by user\
615 * - decoding: set by lavc (default 0)\
616 */\
617 int interlaced_frame;\
618 \
619 /**\
9dad924e 620 * if the content is interlaced, is top field displayed first.\
2744ca9a 621 * - encoding: set by user\
9dad924e 622 * - decoding: set by lavc\
2744ca9a 623 */\
9dad924e 624 int top_field_first;\
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625 \
626 /**\
627 * Pan scan.\
628 * - encoding: set by user\
629 * - decoding: set by lavc\
630 */\
631 AVPanScan *pan_scan;\
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632 \
633 /**\
634 * tell user application that palette has changed from previous frame.\
635 * - encoding: ??? (no palette-enabled encoder yet)\
636 * - decoding: set by lavc (default 0)\
637 */\
638 int palette_has_changed;\
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639 \
640 /**\
641 * Codec suggestion on buffer type if != 0\
642 * - encoding: unused\
643 * - decoding: set by lavc (before get_buffer() call))\
644 */\
645 int buffer_hints;\
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646\
647 /**\
648 * DCT coeffitients\
649 * - encoding: unused\
650 * - decoding: set by lavc\
651 */\
652 short *dct_coeff;\
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653\
654 /**\
655 * Motion referece frame index\
656 * - encoding: set by user\
657 * - decoding: set by lavc\
658 */\
659 int8_t *ref_index[2];
2ec23b6d 660
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661#define FF_QSCALE_TYPE_MPEG1 0
662#define FF_QSCALE_TYPE_MPEG2 1
663#define FF_QSCALE_TYPE_H264 2
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664
665#define FF_BUFFER_TYPE_INTERNAL 1
9b56edf5 666#define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
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667#define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
668#define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
4e00e76b 669
1e491e29 670
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671#define FF_I_TYPE 1 // Intra
672#define FF_P_TYPE 2 // Predicted
673#define FF_B_TYPE 3 // Bi-dir predicted
674#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
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675#define FF_SI_TYPE 5
676#define FF_SP_TYPE 6
1e491e29 677
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678#define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
679#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
680#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
681#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
682
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683/**
684 * Audio Video Frame.
685 */
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686typedef struct AVFrame {
687 FF_COMMON_FRAME
688} AVFrame;
1e491e29 689
14bea432 690#define DEFAULT_FRAME_RATE_BASE 1001000
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691
692/**
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693 * Used by av_log
694 */
695typedef struct AVCLASS AVClass;
696struct AVCLASS {
697 const char* class_name;
698 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
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699 or AVFormatContext, which begin with an AVClass.
700 Needed because av_log is in libavcodec and has no visibility
701 of AVIn/OutputFormat */
6fd46414 702 struct AVOption *option;
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703};
704
705/**
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706 * main external api structure.
707 */
de6d9b64 708typedef struct AVCodecContext {
b71901e6 709 /**
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710 * Info on struct for av_log
711 * - set by avcodec_alloc_context
712 */
43465395 713 AVClass *av_class;
bc874dae 714 /**
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715 * the average bitrate.
716 * - encoding: set by user. unused for constant quantizer encoding
115329f1 717 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
b71901e6 718 */
de6d9b64 719 int bit_rate;
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720
721 /**
64863965 722 * number of bits the bitstream is allowed to diverge from the reference.
b71901e6 723 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
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724 * - encoding: set by user. unused for constant quantizer encoding
725 * - decoding: unused
b71901e6 726 */
115329f1 727 int bit_rate_tolerance;
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728
729 /**
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730 * CODEC_FLAG_*.
731 * - encoding: set by user.
732 * - decoding: set by user.
b71901e6 733 */
de6d9b64 734 int flags;
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735
736 /**
737 * some codecs needs additionnal format info. It is stored here
115329f1 738 * - encoding: set by user.
64863965 739 * - decoding: set by lavc. (FIXME is this ok?)
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740 */
741 int sub_id;
742
743 /**
64863965 744 * motion estimation algorithm used for video coding.
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745 * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
746 * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
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747 * - encoding: MUST be set by user.
748 * - decoding: unused
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749 */
750 int me_method;
751
752 /**
64863965 753 * some codecs need / can use extra-data like huffman tables.
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754 * mjpeg: huffman tables
755 * rv10: additional flags
b704e742 756 * mpeg4: global headers (they can be in the bitstream or here)
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757 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
758 * then extradata_size to avoid prolems if its read with the bitstream reader
ed57bb79 759 * the bytewise contents of extradata must not depend on the architecture or cpu endianness
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760 * - encoding: set/allocated/freed by lavc.
761 * - decoding: set/allocated/freed by user.
b71901e6 762 */
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763 void *extradata;
764 int extradata_size;
115329f1 765
b71901e6 766 /**
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767 * this is the fundamental unit of time (in seconds) in terms
768 * of which frame timestamps are represented. for fixed-fps content,
769 * timebase should be 1/framerate and timestamp increments should be
770 * identically 1.
64863965 771 * - encoding: MUST be set by user
c0df9d75 772 * - decoding: set by lavc.
b71901e6 773 */
c0df9d75 774 AVRational time_base;
115329f1 775
5b28c8c3 776 /* video only */
14bea432 777 /**
21adafec 778 * picture width / height.
115329f1 779 * - encoding: MUST be set by user.
21adafec 780 * - decoding: set by lavc.
115329f1 781 * Note, for compatibility its possible to set this instead of
21adafec 782 * coded_width/height before decoding
b71901e6 783 */
de6d9b64 784 int width, height;
115329f1 785
e769f053 786#define FF_ASPECT_EXTENDED 15
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787
788 /**
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789 * the number of pictures in a group of pitures, or 0 for intra_only.
790 * - encoding: set by user.
791 * - decoding: unused
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792 */
793 int gop_size;
794
795 /**
64863965 796 * pixel format, see PIX_FMT_xxx.
a3a5f4d6 797 * - encoding: set by user.
64863965 798 * - decoding: set by lavc.
b71901e6 799 */
e4eadb4b 800 enum PixelFormat pix_fmt;
115329f1 801
bdfcbbed 802 /**
115329f1 803 * Frame rate emulation. If not zero lower layer (i.e. format handler)
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804 * has to read frames at native frame rate.
805 * - encoding: set by user.
806 * - decoding: unused.
807 */
808 int rate_emu;
115329f1 809
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810 /**
811 * if non NULL, 'draw_horiz_band' is called by the libavcodec
812 * decoder to draw an horizontal band. It improve cache usage. Not
813 * all codecs can do that. You must check the codec capabilities
814 * before
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815 * - encoding: unused
816 * - decoding: set by user.
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817 * @param height the height of the slice
818 * @param y the y position of the slice
819 * @param type 1->top field, 2->bottom field, 3->frame
820 * @param offset offset into the AVFrame.data from which the slice should be read
b71901e6 821 */
bf89e6b1 822 void (*draw_horiz_band)(struct AVCodecContext *s,
da64ecc3 823 const AVFrame *src, int offset[4],
3bb07d61 824 int y, int type, int height);
bf89e6b1 825
de6d9b64 826 /* audio only */
115329f1 827 int sample_rate; ///< samples per sec
de6d9b64 828 int channels;
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829
830 /**
831 * audio sample format.
832 * - encoding: set by user.
833 * - decoding: set by lavc.
834 */
115329f1 835 enum SampleFormat sample_fmt; ///< sample format, currenly unused
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FB
836
837 /* the following data should not be initialized */
718b27a7 838 /**
115329f1 839 * samples per packet. initialized when calling 'init'
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MN
840 */
841 int frame_size;
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DB
842 int frame_number; ///< audio or video frame number
843 int real_pict_num; ///< returns the real picture number of previous encoded frame
844
b71901e6 845 /**
115329f1 846 * number of frames the decoded output will be delayed relative to
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847 * the encoded input.
848 * - encoding: set by lavc.
849 * - decoding: unused
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850 */
851 int delay;
115329f1 852
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853 /* - encoding parameters */
854 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
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855 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
856
b71901e6 857 /**
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858 * minimum quantizer.
859 * - encoding: set by user.
860 * - decoding: unused
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861 */
862 int qmin;
863
864 /**
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865 * maximum quantizer.
866 * - encoding: set by user.
867 * - decoding: unused
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868 */
869 int qmax;
870
871 /**
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872 * maximum quantizer difference etween frames.
873 * - encoding: set by user.
874 * - decoding: unused
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875 */
876 int max_qdiff;
877
878 /**
64863965 879 * maximum number of b frames between non b frames.
b71901e6 880 * note: the output will be delayed by max_b_frames+1 relative to the input
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881 * - encoding: set by user.
882 * - decoding: unused
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883 */
884 int max_b_frames;
885
886 /**
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887 * qscale factor between ip and b frames.
888 * - encoding: set by user.
889 * - decoding: unused
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890 */
891 float b_quant_factor;
115329f1 892
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893 /** obsolete FIXME remove */
894 int rc_strategy;
8b4c7dbc 895 int b_frame_strategy;
9dbcbd92 896
b71901e6 897 /**
64863965 898 * hurry up amount.
8c3eba7c 899 * deprecated in favor of skip_idct and skip_frame
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900 * - encoding: unused
901 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
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902 */
903 int hurry_up;
115329f1 904
de6d9b64 905 struct AVCodec *codec;
115329f1 906
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907 void *priv_data;
908
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909 /* unused, FIXME remove*/
910 int rtp_mode;
115329f1 911
bb628dae 912 int rtp_payload_size; /* The size of the RTP payload: the coder will */
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913 /* do it's best to deliver a chunk with size */
914 /* below rtp_payload_size, the chunk will start */
915 /* with a start code on some codecs like H.263 */
916 /* This doesn't take account of any particular */
917 /* headers inside the transmited RTP payload */
81401c1f 918
115329f1 919
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DB
920 /* The RTP callback: This function is called */
921 /* every time the encoder has a packet to send */
922 /* Depends on the encoder if the data starts */
923 /* with a Start Code (it should) H.263 does. */
924 /* mb_nb contains the number of macroblocks */
925 /* encoded in the RTP payload */
115329f1 926 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
81401c1f 927
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928 /* statistics, used for 2-pass encoding */
929 int mv_bits;
930 int header_bits;
931 int i_tex_bits;
932 int p_tex_bits;
933 int i_count;
934 int p_count;
935 int skip_count;
b71901e6 936 int misc_bits;
115329f1 937
b71901e6 938 /**
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939 * number of bits used for the previously encoded frame.
940 * - encoding: set by lavc
7004ffb3 941 * - decoding: unused
b71901e6 942 */
098eefe1 943 int frame_bits;
7004ffb3 944
b71901e6 945 /**
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946 * private data of the user, can be used to carry app specific stuff.
947 * - encoding: set by user
948 * - decoding: set by user
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949 */
950 void *opaque;
951
de6d9b64 952 char codec_name[32];
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953 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
954 enum CodecID codec_id; /* see CODEC_ID_xxx */
115329f1 955
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956 /**
957 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
958 * this is used to workaround some encoder bugs
bd5a6020 959 * - encoding: set by user, if not then the default based on codec_id will be used
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960 * - decoding: set by user, will be converted to upper case by lavc during init
961 */
962 unsigned int codec_tag;
115329f1 963
b71901e6 964 /**
64863965 965 * workaround bugs in encoders which sometimes cannot be detected automatically.
59fa3f96 966 * - encoding: set by user
64863965 967 * - decoding: set by user
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968 */
969 int workaround_bugs;
64863965 970#define FF_BUG_AUTODETECT 1 ///< autodetection
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971#define FF_BUG_OLD_MSMPEG4 2
972#define FF_BUG_XVID_ILACE 4
973#define FF_BUG_UMP4 8
974#define FF_BUG_NO_PADDING 16
3116cb14 975#define FF_BUG_AMV 32
ac0c6638 976#define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
03e93d35 977#define FF_BUG_QPEL_CHROMA 64
db794953 978#define FF_BUG_STD_QPEL 128
36df8805 979#define FF_BUG_QPEL_CHROMA2 256
c40c3482 980#define FF_BUG_DIRECT_BLOCKSIZE 512
1c6dcb0f 981#define FF_BUG_EDGE 1024
b44bdf7e 982#define FF_BUG_HPEL_CHROMA 2048
4ccde216 983#define FF_BUG_DC_CLIP 4096
59fa3f96 984#define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
4d2858de 985//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
115329f1 986
b71901e6 987 /**
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988 * luma single coeff elimination threshold.
989 * - encoding: set by user
990 * - decoding: unused
b71901e6 991 */
1f6b6e50 992 int luma_elim_threshold;
115329f1 993
b71901e6 994 /**
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995 * chroma single coeff elimination threshold.
996 * - encoding: set by user
997 * - decoding: unused
b71901e6 998 */
1f6b6e50 999 int chroma_elim_threshold;
115329f1 1000
b71901e6 1001 /**
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1002 * strictly follow the std (MPEG4, ...).
1003 * - encoding: set by user
1004 * - decoding: unused
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1005 */
1006 int strict_std_compliance;
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1007#define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
1008#define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
1009#define FF_COMPLIANCE_NORMAL 0
1010#define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
1011#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
1012
b71901e6 1013 /**
64863965 1014 * qscale offset between ip and b frames.
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1015 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1016 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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1017 * - encoding: set by user.
1018 * - decoding: unused
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1019 */
1020 float b_quant_offset;
115329f1 1021
b71901e6 1022 /**
ce3bcaed 1023 * error resilience higher values will detect more errors but may missdetect
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1024 * some more or less valid parts as errors.
1025 * - encoding: unused
1026 * - decoding: set by user
b71901e6 1027 */
1f6b6e50 1028 int error_resilience;
1471c6c2 1029#define FF_ER_CAREFUL 1
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1030#define FF_ER_COMPLIANT 2
1031#define FF_ER_AGGRESSIVE 3
1032#define FF_ER_VERY_AGGRESSIVE 4
115329f1 1033
6b72ac63 1034 /**
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1035 * called at the beginning of each frame to get a buffer for it.
1036 * if pic.reference is set then the frame will be read later by lavc
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MN
1037 * avcodec_align_dimensions() should be used to find the required width and
1038 * height, as they normally need to be rounded up to the next multiple of 16
64863965
MN
1039 * - encoding: unused
1040 * - decoding: set by lavc, user can override
b71901e6 1041 */
492cd3a9 1042 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
115329f1 1043
b71901e6 1044 /**
1e491e29
MN
1045 * called to release buffers which where allocated with get_buffer.
1046 * a released buffer can be reused in get_buffer()
1047 * pic.data[*] must be set to NULL
64863965
MN
1048 * - encoding: unused
1049 * - decoding: set by lavc, user can override
b71901e6 1050 */
492cd3a9 1051 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
0fd90455 1052
b71901e6 1053 /**
e6a2ac34
MN
1054 * if 1 the stream has a 1 frame delay during decoding.
1055 * - encoding: set by lavc
64863965 1056 * - decoding: set by lavc
b71901e6
MN
1057 */
1058 int has_b_frames;
718b27a7
MN
1059
1060 /**
1061 * number of bytes per packet if constant and known or 0
1062 * used by some WAV based audio codecs
1063 */
1064 int block_align;
115329f1 1065
64863965 1066 int parse_only; /* - decoding only: if true, only parsing is done
917e06c8
FB
1067 (function avcodec_parse_frame()). The frame
1068 data is returned. Only MPEG codecs support this now. */
115329f1 1069
b71901e6 1070 /**
e4eadb4b 1071 * 0-> h263 quant 1-> mpeg quant.
64863965
MN
1072 * - encoding: set by user.
1073 * - decoding: unused
b71901e6
MN
1074 */
1075 int mpeg_quant;
115329f1 1076
b71901e6 1077 /**
64863965
MN
1078 * pass1 encoding statistics output buffer.
1079 * - encoding: set by lavc
1080 * - decoding: unused
b71901e6 1081 */
64863965 1082 char *stats_out;
115329f1 1083
b71901e6
MN
1084 /**
1085 * pass2 encoding statistics input buffer.
1086 * concatenated stuff from stats_out of pass1 should be placed here
64863965
MN
1087 * - encoding: allocated/set/freed by user
1088 * - decoding: unused
b71901e6
MN
1089 */
1090 char *stats_in;
115329f1 1091
b71901e6 1092 /**
64863965 1093 * ratecontrol qmin qmax limiting method.
b71901e6 1094 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
64863965
MN
1095 * - encoding: set by user.
1096 * - decoding: unused
b71901e6 1097 */
ce980a95 1098 float rc_qsquish;
b71901e6 1099
ce980a95
MN
1100 float rc_qmod_amp;
1101 int rc_qmod_freq;
115329f1 1102
b71901e6 1103 /**
64863965
MN
1104 * ratecontrol override, see RcOverride.
1105 * - encoding: allocated/set/freed by user.
1106 * - decoding: unused
b71901e6 1107 */
ce980a95
MN
1108 RcOverride *rc_override;
1109 int rc_override_count;
115329f1 1110
b71901e6 1111 /**
64863965
MN
1112 * rate control equation.
1113 * - encoding: set by user
1114 * - decoding: unused
b71901e6 1115 */
ce980a95 1116 char *rc_eq;
115329f1 1117
b71901e6 1118 /**
64863965
MN
1119 * maximum bitrate.
1120 * - encoding: set by user.
1121 * - decoding: unused
b71901e6 1122 */
ce980a95 1123 int rc_max_rate;
115329f1 1124
b71901e6 1125 /**
64863965
MN
1126 * minimum bitrate.
1127 * - encoding: set by user.
1128 * - decoding: unused
b71901e6 1129 */
ce980a95 1130 int rc_min_rate;
115329f1 1131
b71901e6 1132 /**
64863965
MN
1133 * decoder bitstream buffer size.
1134 * - encoding: set by user.
1135 * - decoding: unused
b71901e6 1136 */
ce980a95
MN
1137 int rc_buffer_size;
1138 float rc_buffer_aggressivity;
b71901e6
MN
1139
1140 /**
64863965 1141 * qscale factor between p and i frames.
a1e257b2
MN
1142 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1143 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
64863965
MN
1144 * - encoding: set by user.
1145 * - decoding: unused
b71901e6
MN
1146 */
1147 float i_quant_factor;
115329f1 1148
b71901e6 1149 /**
64863965 1150 * qscale offset between p and i frames.
64863965
MN
1151 * - encoding: set by user.
1152 * - decoding: unused
b71901e6
MN
1153 */
1154 float i_quant_offset;
115329f1 1155
b71901e6 1156 /**
64863965
MN
1157 * initial complexity for pass1 ratecontrol.
1158 * - encoding: set by user.
1159 * - decoding: unused
b71901e6 1160 */
ce980a95 1161 float rc_initial_cplx;
917e06c8 1162
b71901e6 1163 /**
64863965
MN
1164 * dct algorithm, see FF_DCT_* below.
1165 * - encoding: set by user
1166 * - decoding: unused
b71901e6 1167 */
28db7fce 1168 int dct_algo;
c7e07931 1169#define FF_DCT_AUTO 0
28db7fce 1170#define FF_DCT_FASTINT 1
c7e07931
MO
1171#define FF_DCT_INT 2
1172#define FF_DCT_MMX 3
1173#define FF_DCT_MLIB 4
05c4072b 1174#define FF_DCT_ALTIVEC 5
65e4c8c9 1175#define FF_DCT_FAAN 6
115329f1 1176
c5d309f2 1177 /**
64863965
MN
1178 * luminance masking (0-> disabled).
1179 * - encoding: set by user
1180 * - decoding: unused
c5d309f2
MN
1181 */
1182 float lumi_masking;
115329f1 1183
c5d309f2 1184 /**
64863965
MN
1185 * temporary complexity masking (0-> disabled).
1186 * - encoding: set by user
1187 * - decoding: unused
c5d309f2
MN
1188 */
1189 float temporal_cplx_masking;
115329f1 1190
c5d309f2 1191 /**
64863965
MN
1192 * spatial complexity masking (0-> disabled).
1193 * - encoding: set by user
1194 * - decoding: unused
c5d309f2
MN
1195 */
1196 float spatial_cplx_masking;
115329f1 1197
c5d309f2 1198 /**
64863965
MN
1199 * p block masking (0-> disabled).
1200 * - encoding: set by user
1201 * - decoding: unused
c5d309f2
MN
1202 */
1203 float p_masking;
15415af4 1204
5e746b99 1205 /**
64863965
MN
1206 * darkness masking (0-> disabled).
1207 * - encoding: set by user
1208 * - decoding: unused
5e746b99
MN
1209 */
1210 float dark_masking;
115329f1
DB
1211
1212
3a694b04
NK
1213 /* for binary compatibility */
1214 int unused;
115329f1 1215
0c2dd16e 1216 /**
64863965
MN
1217 * idct algorithm, see FF_IDCT_* below.
1218 * - encoding: set by user
1219 * - decoding: set by user
2ad1516a
MN
1220 */
1221 int idct_algo;
1222#define FF_IDCT_AUTO 0
1223#define FF_IDCT_INT 1
1224#define FF_IDCT_SIMPLE 2
1225#define FF_IDCT_SIMPLEMMX 3
1226#define FF_IDCT_LIBMPEG2MMX 4
1227#define FF_IDCT_PS2 5
1228#define FF_IDCT_MLIB 6
1229#define FF_IDCT_ARM 7
05c4072b 1230#define FF_IDCT_ALTIVEC 8
b82cdc72 1231#define FF_IDCT_SH4 9
bd7d1ea7 1232#define FF_IDCT_SIMPLEARM 10
0fa8158d 1233#define FF_IDCT_H264 11
8b6103da 1234#define FF_IDCT_VP3 12
eba9ae3c 1235#define FF_IDCT_IPP 13
84740d59 1236#define FF_IDCT_XVIDMMX 14
2ad1516a 1237
144f0625 1238 /**
64863965
MN
1239 * slice count.
1240 * - encoding: set by lavc
1241 * - decoding: set by user (or 0)
144f0625
MN
1242 */
1243 int slice_count;
1244 /**
64863965
MN
1245 * slice offsets in the frame in bytes.
1246 * - encoding: set/allocated by lavc
1247 * - decoding: set/allocated by user (or NULL)
144f0625
MN
1248 */
1249 int *slice_offset;
1250
4d2858de 1251 /**
64863965
MN
1252 * error concealment flags.
1253 * - encoding: unused
1254 * - decoding: set by user
4d2858de
MN
1255 */
1256 int error_concealment;
1257#define FF_EC_GUESS_MVS 1
1258#define FF_EC_DEBLOCK 2
1259
6b72ac63 1260 /**
bec89a84 1261 * dsp_mask could be add used to disable unwanted CPU features
8350df97 1262 * CPU features (i.e. MMX, SSE. ...)
bec89a84
ZK
1263 *
1264 * with FORCE flag you may instead enable given CPU features
1265 * (Dangerous: usable in case of misdetection, improper usage however will
1266 * result into program crash)
1267 */
1268 unsigned dsp_mask;
bb270c08 1269#define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
bec89a84
ZK
1270 /* lower 16 bits - CPU features */
1271#ifdef HAVE_MMX
bb270c08
DB
1272#define FF_MM_MMX 0x0001 /* standard MMX */
1273#define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1274#define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1275#define FF_MM_SSE 0x0008 /* SSE functions */
1276#define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1277#define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
bec89a84 1278#endif /* HAVE_MMX */
eba9ae3c 1279#ifdef HAVE_IWMMXT
bb270c08 1280#define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
eba9ae3c 1281#endif /* HAVE_IWMMXT */
11f18faf
MN
1282
1283 /**
64863965
MN
1284 * bits per sample/pixel from the demuxer (needed for huffyuv).
1285 * - encoding: set by lavc
1286 * - decoding: set by user
11f18faf
MN
1287 */
1288 int bits_per_sample;
115329f1 1289
11f18faf 1290 /**
64863965
MN
1291 * prediction method (needed for huffyuv).
1292 * - encoding: set by user
1293 * - decoding: unused
11f18faf
MN
1294 */
1295 int prediction_method;
1296#define FF_PRED_LEFT 0
1297#define FF_PRED_PLANE 1
1298#define FF_PRED_MEDIAN 2
115329f1 1299
5d3cea3a 1300 /**
5ff85f1d 1301 * sample aspect ratio (0 if unknown).
1f26c6f3 1302 * numerator and denominator must be relative prime and smaller then 256 for some video standards
64863965
MN
1303 * - encoding: set by user.
1304 * - decoding: set by lavc.
5d3cea3a 1305 */
5ff85f1d 1306 AVRational sample_aspect_ratio;
1e491e29
MN
1307
1308 /**
64863965
MN
1309 * the picture in the bitstream.
1310 * - encoding: set by lavc
1311 * - decoding: set by lavc
1e491e29 1312 */
492cd3a9 1313 AVFrame *coded_frame;
c8c437bc
MN
1314
1315 /**
64863965
MN
1316 * debug.
1317 * - encoding: set by user.
1318 * - decoding: set by user.
c8c437bc
MN
1319 */
1320 int debug;
1321#define FF_DEBUG_PICT_INFO 1
1322#define FF_DEBUG_RC 2
1323#define FF_DEBUG_BITSTREAM 4
1324#define FF_DEBUG_MB_TYPE 8
1325#define FF_DEBUG_QP 16
1326#define FF_DEBUG_MV 32
8289c6fa 1327#define FF_DEBUG_DCT_COEFF 0x00000040
41773b73
MN
1328#define FF_DEBUG_SKIP 0x00000080
1329#define FF_DEBUG_STARTCODE 0x00000100
1330#define FF_DEBUG_PTS 0x00000200
46b4feec 1331#define FF_DEBUG_ER 0x00000400
0da71265 1332#define FF_DEBUG_MMCO 0x00000800
8fc6c2b5 1333#define FF_DEBUG_BUGS 0x00001000
864119b6
MN
1334#define FF_DEBUG_VIS_QP 0x00002000
1335#define FF_DEBUG_VIS_MB_TYPE 0x00004000
115329f1 1336
140cb663 1337 /**
0c9bbaec
WH
1338 * debug.
1339 * - encoding: set by user.
1340 * - decoding: set by user.
1341 */
1342 int debug_mv;
1343#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1344#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1345#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1346
1347 /**
64863965
MN
1348 * error.
1349 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1350 * - decoding: unused
140cb663
MN
1351 */
1352 uint64_t error[4];
115329f1 1353
17a70fde 1354 /**
64863965 1355 * minimum MB quantizer.
6e0d8c06 1356 * - encoding: unused
64863965 1357 * - decoding: unused
17a70fde
MN
1358 */
1359 int mb_qmin;
1360
1361 /**
64863965 1362 * maximum MB quantizer.
6e0d8c06 1363 * - encoding: unused
64863965 1364 * - decoding: unused
17a70fde
MN
1365 */
1366 int mb_qmax;
115329f1 1367
1457ab52 1368 /**
64863965
MN
1369 * motion estimation compare function.
1370 * - encoding: set by user.
1371 * - decoding: unused
1457ab52
MN
1372 */
1373 int me_cmp;
1374 /**
64863965
MN
1375 * subpixel motion estimation compare function.
1376 * - encoding: set by user.
1377 * - decoding: unused
1457ab52
MN
1378 */
1379 int me_sub_cmp;
1380 /**
64863965
MN
1381 * macroblock compare function (not supported yet).
1382 * - encoding: set by user.
1383 * - decoding: unused
1457ab52
MN
1384 */
1385 int mb_cmp;
622348f9
MN
1386 /**
1387 * interlaced dct compare function
1388 * - encoding: set by user.
1389 * - decoding: unused
1390 */
1391 int ildct_cmp;
1457ab52
MN
1392#define FF_CMP_SAD 0
1393#define FF_CMP_SSE 1
1394#define FF_CMP_SATD 2
1395#define FF_CMP_DCT 3
1396#define FF_CMP_PSNR 4
1397#define FF_CMP_BIT 5
1398#define FF_CMP_RD 6
1399#define FF_CMP_ZERO 7
622348f9
MN
1400#define FF_CMP_VSAD 8
1401#define FF_CMP_VSSE 9
e6a2ac34 1402#define FF_CMP_NSSE 10
26efc54e
MN
1403#define FF_CMP_W53 11
1404#define FF_CMP_W97 12
0fd6aea1 1405#define FF_CMP_DCTMAX 13
27c61ac5 1406#define FF_CMP_DCT264 14
1457ab52 1407#define FF_CMP_CHROMA 256
115329f1 1408
1457ab52 1409 /**
64863965
MN
1410 * ME diamond size & shape.
1411 * - encoding: set by user.
1412 * - decoding: unused
1457ab52
MN
1413 */
1414 int dia_size;
b07a5980
MN
1415
1416 /**
64863965
MN
1417 * amount of previous MV predictors (2a+1 x 2a+1 square).
1418 * - encoding: set by user.
1419 * - decoding: unused
b07a5980
MN
1420 */
1421 int last_predictor_count;
70ac76c0 1422
f5fb6b34 1423 /**
64863965
MN
1424 * pre pass for motion estimation.
1425 * - encoding: set by user.
1426 * - decoding: unused
f5fb6b34
MN
1427 */
1428 int pre_me;
b07a5980 1429
70ac76c0 1430 /**
64863965
MN
1431 * motion estimation pre pass compare function.
1432 * - encoding: set by user.
1433 * - decoding: unused
70ac76c0
MN
1434 */
1435 int me_pre_cmp;
826f429a 1436
70ac76c0 1437 /**
64863965
MN
1438 * ME pre pass diamond size & shape.
1439 * - encoding: set by user.
1440 * - decoding: unused
70ac76c0
MN
1441 */
1442 int pre_dia_size;
1443
826f429a 1444 /**
64863965
MN
1445 * subpel ME quality.
1446 * - encoding: set by user.
1447 * - decoding: unused
826f429a
MN
1448 */
1449 int me_subpel_quality;
1450
a33c7159 1451 /**
64863965 1452 * callback to negotiate the pixelFormat.
a33c7159
MN
1453 * @param fmt is the list of formats which are supported by the codec,
1454 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1455 * the first is allways the native one
1456 * @return the choosen format
64863965
MN
1457 * - encoding: unused
1458 * - decoding: set by user, if not set then the native format will always be choosen
a33c7159 1459 */
494c56d3 1460 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
e2f9490e
FB
1461
1462 /**
1463 * DTG active format information (additionnal aspect ratio
1464 * information only used in DVB MPEG2 transport streams). 0 if
1465 * not set.
115329f1 1466 *
64863965 1467 * - encoding: unused.
115329f1 1468 * - decoding: set by decoder
e2f9490e
FB
1469 */
1470 int dtg_active_format;
1471#define FF_DTG_AFD_SAME 8
1472#define FF_DTG_AFD_4_3 9
1473#define FF_DTG_AFD_16_9 10
1474#define FF_DTG_AFD_14_9 11
1475#define FF_DTG_AFD_4_3_SP_14_9 13
1476#define FF_DTG_AFD_16_9_SP_14_9 14
1477#define FF_DTG_AFD_SP_4_3 15
1478
ebbcdc9a
MN
1479 /**
1480 * Maximum motion estimation search range in subpel units.
1481 * if 0 then no limit
115329f1 1482 *
64863965
MN
1483 * - encoding: set by user.
1484 * - decoding: unused.
ebbcdc9a 1485 */
59e0ac8e 1486 int me_range;
ebbcdc9a 1487
65f7062d 1488 /**
1984f635
MN
1489 * intra quantizer bias.
1490 * - encoding: set by user.
1491 * - decoding: unused
1492 */
1493 int intra_quant_bias;
1494#define FF_DEFAULT_QUANT_BIAS 999999
115329f1 1495
1984f635
MN
1496 /**
1497 * inter quantizer bias.
1498 * - encoding: set by user.
1499 * - decoding: unused
1500 */
1501 int inter_quant_bias;
5cd62665
ZK
1502
1503 /**
1504 * color table ID.
1505 * - encoding: unused.
1506 * - decoding: which clrtable should be used for 8bit RGB images
1507 * table have to be stored somewhere FIXME
1508 */
1509 int color_table_id;
115329f1 1510
d90cf87b 1511 /**
115329f1 1512 * internal_buffer count.
bb628dae 1513 * Don't touch, used by lavc default_get_buffer()
d90cf87b
MN
1514 */
1515 int internal_buffer_count;
115329f1 1516
d90cf87b 1517 /**
115329f1 1518 * internal_buffers.
bb628dae 1519 * Don't touch, used by lavc default_get_buffer()
d90cf87b
MN
1520 */
1521 void *internal_buffer;
158c7f05
MN
1522
1523#define FF_LAMBDA_SHIFT 7
1524#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1525#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1526#define FF_LAMBDA_MAX (256*128-1)
1527
1528#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
3d2e8cce
MN
1529 /**
1530 * global quality for codecs which cannot change it per frame.
1531 * this should be proportional to MPEG1/2/4 qscale.
1532 * - encoding: set by user.
1533 * - decoding: unused
1534 */
1535 int global_quality;
115329f1 1536
11e659c2
MN
1537#define FF_CODER_TYPE_VLC 0
1538#define FF_CODER_TYPE_AC 1
1539 /**
1540 * coder type
1541 * - encoding: set by user.
1542 * - decoding: unused
1543 */
1544 int coder_type;
1545
1546 /**
1547 * context model
1548 * - encoding: set by user.
1549 * - decoding: unused
1550 */
1551 int context_model;
5639729b
MN
1552#if 0
1553 /**
1554 *
1555 * - encoding: unused
1556 * - decoding: set by user.
1557 */
1558 uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1559#endif
115329f1 1560
3bb07d61
MN
1561 /**
1562 * slice flags
1563 * - encoding: unused
1564 * - decoding: set by user.
1565 */
1566 int slice_flags;
1567#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1568#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1569#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1570
fb364ada
IK
1571 /**
1572 * XVideo Motion Acceleration
1573 * - encoding: forbidden
1574 * - decoding: set by decoder
1575 */
1576 int xvmc_acceleration;
115329f1 1577
7d1c3fc1
MN
1578 /**
1579 * macroblock decision mode
1580 * - encoding: set by user.
1581 * - decoding: unused
1582 */
1583 int mb_decision;
1584#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1585#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1586#define FF_MB_DECISION_RD 2 ///< rate distoration
d6eb3c50
MN
1587
1588 /**
1589 * custom intra quantization matrix
1590 * - encoding: set by user, can be NULL
1591 * - decoding: set by lavc
1592 */
1593 uint16_t *intra_matrix;
1594
1595 /**
1596 * custom inter quantization matrix
1597 * - encoding: set by user, can be NULL
1598 * - decoding: set by lavc
1599 */
1600 uint16_t *inter_matrix;
115329f1 1601
541ae140
MN
1602 /**
1603 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1604 * this is used to workaround some encoder bugs
1605 * - encoding: unused
1606 * - decoding: set by user, will be converted to upper case by lavc during init
1607 */
1608 unsigned int stream_codec_tag;
05fbd0a2
MN
1609
1610 /**
1611 * scene change detection threshold.
1612 * 0 is default, larger means fewer detected scene changes
1613 * - encoding: set by user.
1614 * - decoding: unused
1615 */
1616 int scenechange_threshold;
158c7f05
MN
1617
1618 /**
1619 * minimum lagrange multipler
1620 * - encoding: set by user.
1621 * - decoding: unused
1622 */
1623 int lmin;
1624
1625 /**
1626 * maximum lagrange multipler
1627 * - encoding: set by user.
1628 * - decoding: unused
1629 */
1630 int lmax;
2a2bbcb0
MM
1631
1632 /**
1633 * Palette control structure
1634 * - encoding: ??? (no palette-enabled encoder yet)
1635 * - decoding: set by user.
1636 */
1637 struct AVPaletteControl *palctrl;
821cb11f
MN
1638
1639 /**
1640 * noise reduction strength
1641 * - encoding: set by user.
1642 * - decoding: unused
1643 */
1644 int noise_reduction;
115329f1 1645
074c4ca7 1646 /**
e1c2a5a0
RT
1647 * called at the beginning of a frame to get cr buffer for it.
1648 * buffer type (size, hints) must be the same. lavc won't check it.
1649 * lavc will pass previous buffer in pic, function should return
1650 * same buffer or new buffer with old frame "painted" into it.
1651 * if pic.data[0] == NULL must behave like get_buffer().
074c4ca7 1652 * - encoding: unused
e1c2a5a0 1653 * - decoding: set by lavc, user can override
074c4ca7 1654 */
e1c2a5a0 1655 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
ba58dabc
MN
1656
1657 /**
1658 * number of bits which should be loaded into the rc buffer before decoding starts
1659 * - encoding: set by user.
1660 * - decoding: unused
1661 */
1662 int rc_initial_buffer_occupancy;
1663
1664 /**
1665 *
1666 * - encoding: set by user.
1667 * - decoding: unused
1668 */
1669 int inter_threshold;
1670
1671 /**
1672 * CODEC_FLAG2_*.
1673 * - encoding: set by user.
1674 * - decoding: set by user.
1675 */
1676 int flags2;
7ebfc0ea
MN
1677
1678 /**
1679 * simulates errors in the bitstream to test error concealment.
1680 * - encoding: set by user.
1681 * - decoding: unused.
1682 */
1683 int error_rate;
115329f1 1684
a1e257b2
MN
1685 /**
1686 * MP3 antialias algorithm, see FF_AA_* below.
1687 * - encoding: unused
1688 * - decoding: set by user
1689 */
1690 int antialias_algo;
1691#define FF_AA_AUTO 0
1692#define FF_AA_FASTINT 1 //not implemented yet
1693#define FF_AA_INT 2
1694#define FF_AA_FLOAT 3
77ea0d4b
MN
1695 /**
1696 * Quantizer noise shaping.
1697 * - encoding: set by user
1698 * - decoding: unused
1699 */
1700 int quantizer_noise_shaping;
9c3d33d6
MN
1701
1702 /**
1703 * Thread count.
1704 * is used to decide how many independant tasks should be passed to execute()
1705 * - encoding: set by user
1706 * - decoding: set by user
1707 */
1708 int thread_count;
115329f1 1709
9c3d33d6
MN
1710 /**
1711 * the codec may call this to execute several independant things. it will return only after
1712 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1713 * default implementation will execute the parts serially
399cec2f 1714 * @param count the number of things to execute
9c3d33d6
MN
1715 * - encoding: set by lavc, user can override
1716 * - decoding: set by lavc, user can override
1717 */
1718 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
115329f1 1719
9c3d33d6
MN
1720 /**
1721 * Thread opaque.
1722 * can be used by execute() to store some per AVCodecContext stuff.
1723 * - encoding: set by execute()
1724 * - decoding: set by execute()
1725 */
1726 void *thread_opaque;
a4d36c11
MN
1727
1728 /**
115329f1 1729 * Motion estimation threshold. under which no motion estimation is
f20f8a8b 1730 * performed, but instead the user specified motion vectors are used
115329f1 1731 *
a4d36c11 1732 * - encoding: set by user
f20f8a8b 1733 * - decoding: unused
a4d36c11 1734 */
2750b827 1735 int me_threshold;
f20f8a8b
MN
1736
1737 /**
1738 * Macroblock threshold. under which the user specified macroblock types will be used
1739 * - encoding: set by user
1740 * - decoding: unused
1741 */
1742 int mb_threshold;
bf266e19
MN
1743
1744 /**
d4c5d2ad 1745 * precision of the intra dc coefficient - 8.
bf266e19
MN
1746 * - encoding: set by user
1747 * - decoding: unused
1748 */
1749 int intra_dc_precision;
d4c5d2ad
MN
1750
1751 /**
1752 * noise vs. sse weight for the nsse comparsion function.
1753 * - encoding: set by user
1754 * - decoding: unused
1755 */
1756 int nsse_weight;
0dfd33c3
MN
1757
1758 /**
160d679c 1759 * number of macroblock rows at the top which are skipped.
0dfd33c3
MN
1760 * - encoding: unused
1761 * - decoding: set by user
1762 */
1763 int skip_top;
1764
1765 /**
160d679c 1766 * number of macroblock rows at the bottom which are skipped.
0dfd33c3
MN
1767 * - encoding: unused
1768 * - decoding: set by user
1769 */
1770 int skip_bottom;
baced9f5
MN
1771
1772 /**
1773 * profile
1774 * - encoding: set by user
1775 * - decoding: set by lavc
1776 */
1777 int profile;
1778#define FF_PROFILE_UNKNOWN -99
1779
1780 /**
1781 * level
1782 * - encoding: set by user
1783 * - decoding: set by lavc
1784 */
1785 int level;
1786#define FF_LEVEL_UNKNOWN -99
178fcca8
MN
1787
1788 /**
1789 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1790 * - encoding: unused
1791 * - decoding: set by user
1792 */
1793 int lowres;
21adafec
MN
1794
1795 /**
bbf18b21 1796 * bitsream width / height. may be different from width/height if lowres
21adafec
MN
1797 * or other things are used
1798 * - encoding: unused
1799 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1800 */
1801 int coded_width, coded_height;
bbf18b21
MN
1802
1803 /**
1804 * frame skip threshold
1805 * - encoding: set by user
1806 * - decoding: unused
1807 */
1808 int frame_skip_threshold;
1809
1810 /**
1811 * frame skip factor
1812 * - encoding: set by user
1813 * - decoding: unused
1814 */
1815 int frame_skip_factor;
0fd6aea1
MN
1816
1817 /**
1818 * frame skip exponent
1819 * - encoding: set by user
1820 * - decoding: unused
1821 */
1822 int frame_skip_exp;
1823
1824 /**
1825 * frame skip comparission function
1826 * - encoding: set by user.
1827 * - decoding: unused
1828 */
1829 int frame_skip_cmp;
957c743a
CM
1830
1831 /**
1832 * border processing masking. raises the quantizer for mbs on the borders
1833 * of the picture.
1834 * - encoding: set by user
1835 * - decoding: unused
1836 */
1837 float border_masking;
6e0d8c06
MN
1838
1839 /**
1840 * minimum MB lagrange multipler.
1841 * - encoding: set by user.
1842 * - decoding: unused
1843 */
1844 int mb_lmin;
1845
1846 /**
1847 * maximum MB lagrange multipler.
1848 * - encoding: set by user.
1849 * - decoding: unused
1850 */
1851 int mb_lmax;
09c3e44e
MN
1852
1853 /**
115329f1 1854 *
09c3e44e
MN
1855 * - encoding: set by user.
1856 * - decoding: unused
1857 */
1858 int me_penalty_compensation;
8c3eba7c
MN
1859
1860 /**
115329f1 1861 *
8c3eba7c
MN
1862 * - encoding: unused
1863 * - decoding: set by user.
1864 */
1865 enum AVDiscard skip_loop_filter;
1866
1867 /**
115329f1 1868 *
8c3eba7c
MN
1869 * - encoding: unused
1870 * - decoding: set by user.
1871 */
1872 enum AVDiscard skip_idct;
1873
1874 /**
115329f1 1875 *
8c3eba7c
MN
1876 * - encoding: unused
1877 * - decoding: set by user.
1878 */
1879 enum AVDiscard skip_frame;
316a2ec8
MN
1880
1881 /**
1882 *
1883 * - encoding: set by user.
1884 * - decoding: unused
1885 */
1886 int bidir_refine;
e8501c93
MN
1887
1888 /**
1889 *
1890 * - encoding: set by user.
1891 * - decoding: unused
1892 */
1893 int brd_scale;
58f7833e
RS
1894
1895 /**
1896 * constant rate factor - quality-based VBR - values ~correspond to qps
1897 * - encoding: set by user.
1898 * - decoding: unused
1899 */
1900 int crf;
1901
1902 /**
1903 * constant quantization parameter rate control method
1904 * - encoding: set by user.
1905 * - decoding: unused
1906 */
1907 int cqp;
1908
1909 /**
1910 * minimum gop size
1911 * - encoding: set by user.
1912 * - decoding: unused
1913 */
1914 int keyint_min;
1915
1916 /**
1917 * number of reference frames
1918 * - encoding: set by user.
1919 * - decoding: unused
1920 */
1921 int refs;
1922
1923 /**
1924 * chroma qp offset from luma
1925 * - encoding: set by user.
1926 * - decoding: unused
1927 */
1928 int chromaoffset;
1929
1930 /**
1931 * influences how often b-frames are used
1932 * - encoding: set by user.
1933 * - decoding: unused
1934 */
1935 int bframebias;
1936
1937 /**
1938 * trellis RD quantization
1939 * - encoding: set by user.
1940 * - decoding: unused
1941 */
1942 int trellis;
1943
1944 /**
1945 * reduce fluctuations in qp (before curve compression)
1946 * - encoding: set by user.
1947 * - decoding: unused
1948 */
1949 float complexityblur;
1950
1951 /**
1952 * in-loop deblocking filter alphac0 parameter
1953 * alpha is in the range -6...6
1954 * - encoding: set by user.
1955 * - decoding: unused
1956 */
1957 int deblockalpha;
1958
1959 /**
1960 * in-loop deblocking filter beta parameter
1961 * beta is in the range -6...6
1962 * - encoding: set by user.
1963 * - decoding: unused
1964 */
1965 int deblockbeta;
1966
1967 /**
1968 * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1969 * - encoding: set by user.
1970 * - decoding: unused
1971 */
1972 int partitions;
1973#define X264_PART_I4X4 0x001 /* Analyse i4x4 */
1974#define X264_PART_I8X8 0x002 /* Analyse i8x8 (requires 8x8 transform) */
1975#define X264_PART_P8X8 0x010 /* Analyse p16x8, p8x16 and p8x8 */
1976#define X264_PART_P4X4 0x020 /* Analyse p8x4, p4x8, p4x4 */
1977#define X264_PART_B8X8 0x100 /* Analyse b16x8, b8x16 and b8x8 */
1978
1979 /**
1980 * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1981 * - encoding: set by user.
1982 * - decoding: unused
1983 */
1984 int directpred;
de6d9b64
FB
1985} AVCodecContext;
1986
64863965
MN
1987/**
1988 * AVCodec.
1989 */
de6d9b64 1990typedef struct AVCodec {
18f77016 1991 const char *name;
5d234974 1992 enum CodecType type;
9297ddd3 1993 enum CodecID id;
de6d9b64
FB
1994 int priv_data_size;
1995 int (*init)(AVCodecContext *);
0c1a9eda 1996 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
de6d9b64 1997 int (*close)(AVCodecContext *);
0fd90455 1998 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
0c1a9eda 1999 uint8_t *buf, int buf_size);
bf89e6b1 2000 int capabilities;
a1043f9c 2001#if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
40c5fa26 2002 void *dummy; // FIXME remove next time we break binary compatibility
a1043f9c 2003#endif
de6d9b64 2004 struct AVCodec *next;
7a06ff14 2005 void (*flush)(AVCodecContext *);
b0df362b 2006 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
fcee0164 2007 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
de6d9b64
FB
2008} AVCodec;
2009
97d96aaa 2010/**
d7425f59
MN
2011 * four components are given, that's all.
2012 * the last component is alpha
2013 */
de6d9b64 2014typedef struct AVPicture {
0c1a9eda 2015 uint8_t *data[4];
cd394651 2016 int linesize[4]; ///< number of bytes per line
de6d9b64
FB
2017} AVPicture;
2018
ba118447
MM
2019/**
2020 * AVPaletteControl
2021 * This structure defines a method for communicating palette changes
2022 * between and demuxer and a decoder.
2023 */
2e99641b 2024#define AVPALETTE_SIZE 1024
432d84c3 2025#define AVPALETTE_COUNT 256
ba118447
MM
2026typedef struct AVPaletteControl {
2027
2028 /* demuxer sets this to 1 to indicate the palette has changed;
2029 * decoder resets to 0 */
2030 int palette_changed;
2031
2a2bbcb0
MM
2032 /* 4-byte ARGB palette entries, stored in native byte order; note that
2033 * the individual palette components should be on a 8-bit scale; if
2034 * the palette data comes from a IBM VGA native format, the component
2035 * data is probably 6 bits in size and needs to be scaled */
2e99641b 2036 unsigned int palette[AVPALETTE_COUNT];
ba118447
MM
2037
2038} AVPaletteControl;
2039
c6ec28b1 2040typedef struct AVSubtitleRect {
240c1657
FB
2041 uint16_t x;
2042 uint16_t y;
2043 uint16_t w;
2044 uint16_t h;
2045 uint16_t nb_colors;
240c1657
FB
2046 int linesize;
2047 uint32_t *rgba_palette;
2048 uint8_t *bitmap;
c6ec28b1
MN
2049} AVSubtitleRect;
2050
2051typedef struct AVSubtitle {
2052 uint16_t format; /* 0 = graphics */
2053 uint32_t start_display_time; /* relative to packet pts, in ms */
2054 uint32_t end_display_time; /* relative to packet pts, in ms */
2055 uint32_t num_rects;
2056 AVSubtitleRect *rects;
240c1657
FB
2057} AVSubtitle;
2058
de6d9b64
FB
2059extern AVCodec ac3_encoder;
2060extern AVCodec mp2_encoder;
9d36bdc9 2061extern AVCodec mp3lame_encoder;
81e0d0b4 2062extern AVCodec oggvorbis_encoder;
5c5dea3f 2063extern AVCodec oggtheora_encoder;
29d48296 2064extern AVCodec faac_encoder;
1ddadfa9 2065extern AVCodec xvid_encoder;
de6d9b64 2066extern AVCodec mpeg1video_encoder;
029911d1 2067extern AVCodec mpeg2video_encoder;
1c3990db 2068extern AVCodec h261_encoder;
de6d9b64
FB
2069extern AVCodec h263_encoder;
2070extern AVCodec h263p_encoder;
d4f5d74a 2071extern AVCodec flv_encoder;
de6d9b64 2072extern AVCodec rv10_encoder;
68b94c35 2073extern AVCodec rv20_encoder;
6faa4645 2074extern AVCodec dvvideo_encoder;
de6d9b64 2075extern AVCodec mjpeg_encoder;
b1e6b355 2076extern AVCodec ljpeg_encoder;
5639729b 2077extern AVCodec jpegls_encoder;
4eff7cf4 2078extern AVCodec png_encoder;
5b6d5596
MN
2079extern AVCodec ppm_encoder;
2080extern AVCodec pgm_encoder;
2081extern AVCodec pgmyuv_encoder;
2082extern AVCodec pbm_encoder;
2083extern AVCodec pam_encoder;
bf89e6b1 2084extern AVCodec mpeg4_encoder;
84afee34
MN
2085extern AVCodec msmpeg4v1_encoder;
2086extern AVCodec msmpeg4v2_encoder;
2087extern AVCodec msmpeg4v3_encoder;
0151a6f5
MN
2088extern AVCodec wmv1_encoder;
2089extern AVCodec wmv2_encoder;
11f18faf 2090extern AVCodec huffyuv_encoder;
f37b9768 2091extern AVCodec ffvhuff_encoder;
0da71265 2092extern AVCodec h264_encoder;
3d2e8cce 2093extern AVCodec asv1_encoder;
9b56edf5 2094extern AVCodec asv2_encoder;
be3564ed 2095extern AVCodec vcr1_encoder;
5e20f836 2096extern AVCodec ffv1_encoder;
791e7b83 2097extern AVCodec snow_encoder;
c3bf0288 2098extern AVCodec mdec_encoder;
a273bbfb 2099extern AVCodec zlib_encoder;
54f5fd22
AB
2100extern AVCodec sonic_encoder;
2101extern AVCodec sonic_ls_encoder;
3b64893d 2102extern AVCodec svq1_encoder;
6662ec29 2103extern AVCodec x264_encoder;
de6d9b64
FB
2104
2105extern AVCodec h263_decoder;
c6148de2 2106extern AVCodec h261_decoder;
bf89e6b1 2107extern AVCodec mpeg4_decoder;
84afee34
MN
2108extern AVCodec msmpeg4v1_decoder;
2109extern AVCodec msmpeg4v2_decoder;
2110extern AVCodec msmpeg4v3_decoder;
e1a9dbff 2111extern AVCodec wmv1_decoder;
0151a6f5 2112extern AVCodec wmv2_decoder;
21aa398f
AB
2113extern AVCodec vc9_decoder;
2114extern AVCodec wmv3_decoder;
922bc38d
MN
2115extern AVCodec mpeg1video_decoder;
2116extern AVCodec mpeg2video_decoder;
c512b303 2117extern AVCodec mpegvideo_decoder;
fb364ada 2118extern AVCodec mpeg_xvmc_decoder;
de6d9b64 2119extern AVCodec h263i_decoder;
d4f5d74a 2120extern AVCodec flv_decoder;
de6d9b64 2121extern AVCodec rv10_decoder;
68b94c35 2122extern AVCodec rv20_decoder;
3f05305d
MN
2123extern AVCodec rv30_decoder;
2124extern AVCodec rv40_decoder;
be8ffec9 2125extern AVCodec svq1_decoder;
8b82a956 2126extern AVCodec svq3_decoder;
020fcc94 2127extern AVCodec dvvideo_decoder;
bc8d1857
FB
2128extern AVCodec wmav1_decoder;
2129extern AVCodec wmav2_decoder;
4e66ab3b 2130extern AVCodec mjpeg_decoder;
b135d9fb 2131extern AVCodec mjpegb_decoder;
5e83dec4 2132extern AVCodec sp5x_decoder;
4eff7cf4 2133extern AVCodec png_decoder;
4b1f4f23 2134extern AVCodec mp2_decoder;
a96b68b7 2135extern AVCodec mp3_decoder;
1ede228a 2136extern AVCodec mp3adu_decoder;
d2a7718d 2137extern AVCodec mp3on4_decoder;
d9b1c197 2138extern AVCodec qdm2_decoder;
e0f7e329 2139extern AVCodec cook_decoder;
bf3027c8 2140extern AVCodec truespeech_decoder;
3f95e843
FR
2141extern AVCodec mace3_decoder;
2142extern AVCodec mace6_decoder;
11f18faf 2143extern AVCodec huffyuv_decoder;
f37b9768 2144extern AVCodec ffvhuff_decoder;
3aca208a 2145extern AVCodec oggvorbis_decoder;
5c5dea3f 2146extern AVCodec oggtheora_decoder;
f70f7c6d 2147extern AVCodec cyuv_decoder;
0da71265 2148extern AVCodec h264_decoder;
deabd4fd 2149extern AVCodec indeo3_decoder;
d86053a4 2150extern AVCodec vp3_decoder;
f44ee2c3 2151extern AVCodec theora_decoder;
891f64b3 2152extern AVCodec amr_nb_decoder;
bc634f6f 2153extern AVCodec amr_nb_encoder;
d663a1fd
MN
2154extern AVCodec amr_wb_encoder;
2155extern AVCodec amr_wb_decoder;
280bd7b7
ZK
2156extern AVCodec aac_decoder;
2157extern AVCodec mpeg4aac_decoder;
3d2e8cce 2158extern AVCodec asv1_decoder;
9b56edf5 2159extern AVCodec asv2_decoder;
be3564ed 2160extern AVCodec vcr1_decoder;
3aff069b 2161extern AVCodec cljr_decoder;
5e20f836 2162extern AVCodec ffv1_decoder;
791e7b83 2163extern AVCodec snow_decoder;
8809cfee 2164extern AVCodec fourxm_decoder;
c3bf0288 2165extern AVCodec mdec_decoder;
3ef8be2b
MM
2166extern AVCodec roq_decoder;
2167extern AVCodec interplay_video_decoder;
9937e686 2168extern AVCodec xan_wc3_decoder;
2fdf638b
MM
2169extern AVCodec rpza_decoder;
2170extern AVCodec cinepak_decoder;
2171extern AVCodec msrle_decoder;
2172extern AVCodec msvideo1_decoder;
6955a882 2173extern AVCodec vqa_decoder;
4120a53a 2174extern AVCodec idcin_decoder;
1dc1ed99 2175extern AVCodec eightbps_decoder;
11e29a41 2176extern AVCodec smc_decoder;
42cad81a 2177extern AVCodec flic_decoder;
fafa0b75
MM
2178extern AVCodec vmdvideo_decoder;
2179extern AVCodec vmdaudio_decoder;
9a4117d5 2180extern AVCodec truemotion1_decoder;
64af6168 2181extern AVCodec truemotion2_decoder;
a273bbfb
RT
2182extern AVCodec mszh_decoder;
2183extern AVCodec zlib_decoder;
b8414bbd
NK
2184extern AVCodec ra_144_decoder;
2185extern AVCodec ra_288_decoder;
3ef8be2b
MM
2186extern AVCodec roq_dpcm_decoder;
2187extern AVCodec interplay_dpcm_decoder;
9937e686 2188extern AVCodec xan_dpcm_decoder;
d08d7142 2189extern AVCodec sol_dpcm_decoder;
54f5fd22 2190extern AVCodec sonic_decoder;
070ed1bc 2191extern AVCodec qtrle_decoder;
ac2570a8 2192extern AVCodec flac_decoder;
9d53d58e 2193extern AVCodec tscc_decoder;
e0f80bd7 2194extern AVCodec cscd_decoder;
d0a0bbd2 2195extern AVCodec ulti_decoder;
d08d7142 2196extern AVCodec qdraw_decoder;
ab711b3c 2197extern AVCodec xl_decoder;
acfd8f0f 2198extern AVCodec qpeg_decoder;
85ad5695 2199extern AVCodec shorten_decoder;
9c7fb608 2200extern AVCodec loco_decoder;
a8a15e9d 2201extern AVCodec wnv1_decoder;
589f8220 2202extern AVCodec aasc_decoder;
6d6d7970 2203extern AVCodec alac_decoder;
034eeaa1 2204extern AVCodec ws_snd1_decoder;
856dbbff 2205extern AVCodec indeo2_decoder;
0bde73d9 2206extern AVCodec vorbis_decoder;
b81f8949 2207extern AVCodec fraps_decoder;
bb4c2140
MN
2208extern AVCodec libgsm_encoder;
2209extern AVCodec libgsm_decoder;
9fa62f2a 2210extern AVCodec bmp_decoder;
de6d9b64 2211
a96b68b7
FB
2212/* pcm codecs */
2213#define PCM_CODEC(id, name) \
2214extern AVCodec name ## _decoder; \
f11d3f23 2215extern AVCodec name ## _encoder
a96b68b7 2216
b461b3bc
RD
2217PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2218PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2219PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2220PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2221PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2222PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2223PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2224PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2225PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
a96b68b7
FB
2226PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2227PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2228PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2229PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2230PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2231PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2232PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2233PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2234
0147f198
FR
2235/* adpcm codecs */
2236
2237PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2238PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
9937e686
MM
2239PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2240PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2fdf638b 2241PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
7d8379f2 2242PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
0147f198 2243PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
4b465299 2244PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
fc384777
MM
2245PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2246PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
7d8379f2 2247PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
e5966052 2248PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
b3bfb299 2249PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
659c3692 2250PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2ff4524e 2251PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
0147f198 2252
a96b68b7
FB
2253#undef PCM_CODEC
2254
2255/* dummy raw video codec */
63167088
RS
2256extern AVCodec rawvideo_encoder;
2257extern AVCodec rawvideo_decoder;
de6d9b64
FB
2258
2259/* the following codecs use external GPL libs */
de6d9b64 2260extern AVCodec ac3_decoder;
23c99253 2261extern AVCodec dts_decoder;
de6d9b64 2262
240c1657 2263/* subtitles */
689abe56 2264extern AVCodec dvdsub_encoder;
240c1657
FB
2265extern AVCodec dvdsub_decoder;
2266extern AVCodec dvbsub_encoder;
c6ec28b1 2267extern AVCodec dvbsub_decoder;
240c1657 2268
de6d9b64
FB
2269/* resample.c */
2270
2271struct ReSampleContext;
aaaf1635 2272struct AVResampleContext;
de6d9b64
FB
2273
2274typedef struct ReSampleContext ReSampleContext;
2275
115329f1 2276ReSampleContext *audio_resample_init(int output_channels, int input_channels,
de6d9b64
FB
2277 int output_rate, int input_rate);
2278int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2279void audio_resample_close(ReSampleContext *s);
2280
6e225de2 2281struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
aaaf1635 2282int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2d48eddd 2283void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
d88443ae 2284void av_resample_close(struct AVResampleContext *c);
aaaf1635 2285
de6d9b64
FB
2286/* YUV420 format is assumed ! */
2287
2288struct ImgReSampleContext;
2289
2290typedef struct ImgReSampleContext ImgReSampleContext;
2291
2292ImgReSampleContext *img_resample_init(int output_width, int output_height,
2293 int input_width, int input_height);
ab6d194a
MN
2294
2295ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2296 int iwidth, int iheight,
2297 int topBand, int bottomBand,
1ff93ffc
TK
2298 int leftBand, int rightBand,
2299 int padtop, int padbottom,
2300 int padleft, int padright);
2301
ab6d194a 2302
115329f1 2303void img_resample(ImgReSampleContext *s,
da64ecc3 2304 AVPicture *output, const AVPicture *input);
de6d9b64
FB
2305
2306void img_resample_close(ImgReSampleContext *s);
2307
75917b88
DH
2308/**
2309 * Allocate memory for a picture. Call avpicture_free to free it.
2310 *
2311 * @param picture the picture to be filled in.
2312 * @param pix_fmt the format of the picture.
2313 * @param width the width of the picture.
2314 * @param height the height of the picture.
2315 * @return 0 if successful, -1 if not.
2316 */
2317int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2318
2319/* Free a picture previously allocated by avpicture_alloc. */
2320void avpicture_free(AVPicture *picture);
2321
0c1a9eda 2322int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2d1a4094 2323 int pix_fmt, int width, int height);
da64ecc3 2324int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
63167088 2325 unsigned char *dest, int dest_size);
219b06c6 2326int avpicture_get_size(int pix_fmt, int width, int height);
dab64ebc
FB
2327void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2328const char *avcodec_get_pix_fmt_name(int pix_fmt);
21adafec 2329void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
63167088 2330enum PixelFormat avcodec_get_pix_fmt(const char* name);
d07730dd 2331unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
219b06c6 2332
fab21997
FB
2333#define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2334#define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2335#define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2336#define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2337#define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2338#define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2339
2340int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2341 int has_alpha);
2342int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2343 int has_alpha, int *loss_ptr);
2344
0469baf1
FB
2345#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2346#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
da64ecc3 2347int img_get_alpha_info(const AVPicture *src,
bb270c08 2348 int pix_fmt, int width, int height);
0469baf1 2349
219b06c6
FB
2350/* convert among pixel formats */
2351int img_convert(AVPicture *dst, int dst_pix_fmt,
115329f1 2352 const AVPicture *src, int pix_fmt,
219b06c6
FB
2353 int width, int height);
2354
2355/* deinterlace a picture */
da64ecc3 2356int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
de6d9b64
FB
2357 int pix_fmt, int width, int height);
2358
2359/* external high level API */
2360
2361extern AVCodec *first_avcodec;
2362
156e5023 2363/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 2364unsigned avcodec_version(void);
8bceb6af 2365/* returns LIBAVCODEC_BUILD constant */
51a49663 2366unsigned avcodec_build(void);
de6d9b64
FB
2367void avcodec_init(void);
2368
2369void register_avcodec(AVCodec *format);
2370AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 2371AVCodec *avcodec_find_encoder_by_name(const char *name);
de6d9b64
FB
2372AVCodec *avcodec_find_decoder(enum CodecID id);
2373AVCodec *avcodec_find_decoder_by_name(const char *name);
2374void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2375
1e491e29 2376void avcodec_get_context_defaults(AVCodecContext *s);
7ffbb60e 2377AVCodecContext *avcodec_alloc_context(void);
7906085f 2378void avcodec_get_frame_defaults(AVFrame *pic);
492cd3a9 2379AVFrame *avcodec_alloc_frame(void);
1e491e29 2380
492cd3a9
MN
2381int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2382void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
3a569751
MN
2383int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2384void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
0ecca7a4 2385int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
3a569751 2386enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
1e491e29 2387
5a815088
MN
2388int avcodec_thread_init(AVCodecContext *s, int thread_count);
2389void avcodec_thread_free(AVCodecContext *s);
2390int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
3a569751 2391int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
9c3d33d6
MN
2392//FIXME func typedef
2393
7a06ff14
MN
2394/**
2395 * opens / inits the AVCodecContext.
2396 * not thread save!
2397 */
de6d9b64 2398int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
7a06ff14 2399
115329f1 2400int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 2401 int *frame_size_ptr,
0c1a9eda 2402 uint8_t *buf, int buf_size);
115329f1 2403int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 2404 int *got_picture_ptr,
0c1a9eda 2405 uint8_t *buf, int buf_size);
240c1657
FB
2406int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2407 int *got_sub_ptr,
2408 const uint8_t *buf, int buf_size);
115329f1 2409int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
917e06c8 2410 int *data_size_ptr,
0c1a9eda 2411 uint8_t *buf, int buf_size);
115329f1 2412int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64 2413 const short *samples);
115329f1 2414int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 2415 const AVFrame *pict);
115329f1 2416int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
240c1657 2417 const AVSubtitle *sub);
de6d9b64
FB
2418
2419int avcodec_close(AVCodecContext *avctx);
2420
2421void avcodec_register_all(void);
a96b68b7 2422
1c2a8c7f
MN
2423void avcodec_flush_buffers(AVCodecContext *avctx);
2424
88730be6
MR
2425void avcodec_default_free_buffers(AVCodecContext *s);
2426
14bea432 2427/* misc usefull functions */
d8085ea7
MN
2428
2429/**
2430 * returns a single letter to describe the picture type
2431 */
2432char av_get_pict_type_char(int pict_type);
2433
2e8f2c20 2434
8424cf50
FB
2435/* frame parsing */
2436typedef struct AVCodecParserContext {
2437 void *priv_data;
2438 struct AVCodecParser *parser;
2439 int64_t frame_offset; /* offset of the current frame */
115329f1 2440 int64_t cur_offset; /* current offset
8424cf50
FB
2441 (incremented by each av_parser_parse()) */
2442 int64_t last_frame_offset; /* offset of the last frame */
2443 /* video info */
2444 int pict_type; /* XXX: put it back in AVCodecContext */
2445 int repeat_pict; /* XXX: put it back in AVCodecContext */
b84f2a35
FB
2446 int64_t pts; /* pts of the current frame */
2447 int64_t dts; /* dts of the current frame */
2448
2449 /* private data */
2450 int64_t last_pts;
2451 int64_t last_dts;
a62aecce 2452 int fetch_timestamp;
b84f2a35
FB
2453
2454#define AV_PARSER_PTS_NB 4
2455 int cur_frame_start_index;
2456 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2457 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2458 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
115329f1 2459
7cbaa7ba
MN
2460 int flags;
2461#define PARSER_FLAG_COMPLETE_FRAMES 0x0001
8424cf50
FB
2462} AVCodecParserContext;
2463
2464typedef struct AVCodecParser {
99f06236 2465 int codec_ids[5]; /* several codec IDs are permitted */
8424cf50
FB
2466 int priv_data_size;
2467 int (*parser_init)(AVCodecParserContext *s);
115329f1 2468 int (*parser_parse)(AVCodecParserContext *s,
8424cf50 2469 AVCodecContext *avctx,
115329f1 2470 uint8_t **poutbuf, int *poutbuf_size,
8424cf50
FB
2471 const uint8_t *buf, int buf_size);
2472 void (*parser_close)(AVCodecParserContext *s);
90ad92b3 2473 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
8424cf50
FB
2474 struct AVCodecParser *next;
2475} AVCodecParser;
2476
2477extern AVCodecParser *av_first_parser;
2478
2479void av_register_codec_parser(AVCodecParser *parser);
2480AVCodecParserContext *av_parser_init(int codec_id);
115329f1 2481int av_parser_parse(AVCodecParserContext *s,
8424cf50 2482 AVCodecContext *avctx,
115329f1 2483 uint8_t **poutbuf, int *poutbuf_size,
b84f2a35
FB
2484 const uint8_t *buf, int buf_size,
2485 int64_t pts, int64_t dts);
90ad92b3
MN
2486int av_parser_change(AVCodecParserContext *s,
2487 AVCodecContext *avctx,
115329f1 2488 uint8_t **poutbuf, int *poutbuf_size,
90ad92b3 2489 const uint8_t *buf, int buf_size, int keyframe);
8424cf50
FB
2490void av_parser_close(AVCodecParserContext *s);
2491
2492extern AVCodecParser mpegvideo_parser;
2493extern AVCodecParser mpeg4video_parser;
c6148de2 2494extern AVCodecParser h261_parser;
8424cf50
FB
2495extern AVCodecParser h263_parser;
2496extern AVCodecParser h264_parser;
8e6325b9 2497extern AVCodecParser mjpeg_parser;
99f06236 2498extern AVCodecParser pnm_parser;
8424cf50
FB
2499extern AVCodecParser mpegaudio_parser;
2500extern AVCodecParser ac3_parser;
240c1657 2501extern AVCodecParser dvdsub_parser;
c6ec28b1 2502extern AVCodecParser dvbsub_parser;
8424cf50 2503
544eb99c 2504/* memory */
e4eadb4b 2505void *av_malloc(unsigned int size);
18f77016 2506void *av_mallocz(unsigned int size);
8e1e6f31 2507void *av_realloc(void *ptr, unsigned int size);
544eb99c 2508void av_free(void *ptr);
8e1e6f31 2509char *av_strdup(const char *s);
81c5f887 2510void av_freep(void *ptr);
97d96aaa 2511void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
855ea723
ZK
2512/* for static data only */
2513/* call av_free_static to release all staticaly allocated tables */
628d601b 2514void av_free_static(void);
8d1f2ba5 2515void *av_mallocz_static(unsigned int size);
073c2593 2516void *av_realloc_static(void *ptr, unsigned int size);
544eb99c 2517
fc384777
MM
2518/* add by bero : in adx.c */
2519int is_adx(const unsigned char *buf,size_t bufsize);
2520
e1c2a5a0
RT
2521void img_copy(AVPicture *dst, const AVPicture *src,
2522 int pix_fmt, int width, int height);
2523
9b879566
MB
2524/* av_log API */
2525
2526#include <stdarg.h>
2527
d8019eb5 2528#define AV_LOG_QUIET -1
9b879566
MB
2529#define AV_LOG_ERROR 0
2530#define AV_LOG_INFO 1
2531#define AV_LOG_DEBUG 2
2532
f4bd8cf0 2533#ifdef __GNUC__
bc874dae 2534extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
f4bd8cf0
MN
2535#else
2536extern void av_log(void*, int level, const char *fmt, ...);
2537#endif
2538
bc874dae 2539extern void av_vlog(void*, int level, const char *fmt, va_list);
9b879566
MB
2540extern int av_log_get_level(void);
2541extern void av_log_set_level(int);
bc874dae 2542extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
9b879566 2543
3a278992 2544/* endian macros */
e96682e6 2545#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
3a278992
MM
2546#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2547#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2548 (((uint8_t*)(x))[1] << 16) | \
2549 (((uint8_t*)(x))[2] << 8) | \
2550 ((uint8_t*)(x))[3])
2551#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2552#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2553 (((uint8_t*)(x))[2] << 16) | \
2554 (((uint8_t*)(x))[1] << 8) | \
2555 ((uint8_t*)(x))[0])
e96682e6 2556#endif
3a278992 2557
ad2b531d
MR
2558extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2559
02d697aa
ZK
2560#ifdef __cplusplus
2561}
2562#endif
2563
a96b68b7 2564#endif /* AVCODEC_H */