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[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
de6d9b64 14#include "common.h"
5ff85f1d 15#include "rational.h"
4b813d5c 16#include <sys/types.h> /* size_t */
de6d9b64 17
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18#define FFMPEG_VERSION_INT 0x000409
19#define FFMPEG_VERSION "0.4.9-pre1"
240c1657 20#define LIBAVCODEC_BUILD 4756
4b1f4f23 21
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22#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
23#define LIBAVCODEC_VERSION FFMPEG_VERSION
24
25#define AV_STRINGIFY(s) AV_TOSTRING(s)
26#define AV_TOSTRING(s) #s
27#define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
ce2749d2 28
2a24fe4c 29#define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
9740beff 30#define AV_TIME_BASE 1000000
c0df9d75 31#define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE}
9740beff 32
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33enum CodecID {
34 CODEC_ID_NONE,
35 CODEC_ID_MPEG1VIDEO,
dcedf586 36 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
fb364ada 37 CODEC_ID_MPEG2VIDEO_XVMC,
c6148de2 38 CODEC_ID_H261,
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39 CODEC_ID_H263,
40 CODEC_ID_RV10,
68b94c35 41 CODEC_ID_RV20,
de6d9b64 42 CODEC_ID_MJPEG,
b135d9fb 43 CODEC_ID_MJPEGB,
b1e6b355 44 CODEC_ID_LJPEG,
5e83dec4 45 CODEC_ID_SP5X,
bf89e6b1 46 CODEC_ID_MPEG4,
de6d9b64 47 CODEC_ID_RAWVIDEO,
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48 CODEC_ID_MSMPEG4V1,
49 CODEC_ID_MSMPEG4V2,
50 CODEC_ID_MSMPEG4V3,
e1a9dbff 51 CODEC_ID_WMV1,
b50eef3a 52 CODEC_ID_WMV2,
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53 CODEC_ID_H263P,
54 CODEC_ID_H263I,
d4f5d74a 55 CODEC_ID_FLV1,
be8ffec9 56 CODEC_ID_SVQ1,
8b82a956 57 CODEC_ID_SVQ3,
020fcc94 58 CODEC_ID_DVVIDEO,
11f18faf 59 CODEC_ID_HUFFYUV,
f70f7c6d 60 CODEC_ID_CYUV,
0da71265 61 CODEC_ID_H264,
deabd4fd 62 CODEC_ID_INDEO3,
d86053a4 63 CODEC_ID_VP3,
f44ee2c3 64 CODEC_ID_THEORA,
3d2e8cce 65 CODEC_ID_ASV1,
9b56edf5 66 CODEC_ID_ASV2,
5e20f836 67 CODEC_ID_FFV1,
e2a7bb28 68 CODEC_ID_4XM,
be3564ed 69 CODEC_ID_VCR1,
3aff069b 70 CODEC_ID_CLJR,
c3bf0288 71 CODEC_ID_MDEC,
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72 CODEC_ID_ROQ,
73 CODEC_ID_INTERPLAY_VIDEO,
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74 CODEC_ID_XAN_WC3,
75 CODEC_ID_XAN_WC4,
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76 CODEC_ID_RPZA,
77 CODEC_ID_CINEPAK,
78 CODEC_ID_WS_VQA,
79 CODEC_ID_MSRLE,
80 CODEC_ID_MSVIDEO1,
4120a53a 81 CODEC_ID_IDCIN,
1dc1ed99 82 CODEC_ID_8BPS,
11e29a41 83 CODEC_ID_SMC,
42cad81a 84 CODEC_ID_FLIC,
9a4117d5 85 CODEC_ID_TRUEMOTION1,
fafa0b75 86 CODEC_ID_VMDVIDEO,
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87 CODEC_ID_MSZH,
88 CODEC_ID_ZLIB,
070ed1bc 89 CODEC_ID_QTRLE,
791e7b83 90 CODEC_ID_SNOW,
9d53d58e 91 CODEC_ID_TSCC,
d0a0bbd2 92 CODEC_ID_ULTI,
d08d7142 93 CODEC_ID_QDRAW,
ab711b3c 94 CODEC_ID_VIXL,
acfd8f0f 95 CODEC_ID_QPEG,
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96 CODEC_ID_XVID,
97 CODEC_ID_PNG,
98 CODEC_ID_PPM,
99 CODEC_ID_PBM,
100 CODEC_ID_PGM,
101 CODEC_ID_PGMYUV,
102 CODEC_ID_PAM,
f37b9768 103 CODEC_ID_FFVHUFF,
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104 CODEC_ID_RV30,
105 CODEC_ID_RV40,
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106 CODEC_ID_VC9,
107 CODEC_ID_WMV3,
9c7fb608 108 CODEC_ID_LOCO,
a8a15e9d 109 CODEC_ID_WNV1,
589f8220 110 CODEC_ID_AASC,
856dbbff 111 CODEC_ID_INDEO2,
b81f8949 112 CODEC_ID_FRAPS,
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113
114 /* various pcm "codecs" */
17179d2d 115 CODEC_ID_PCM_S16LE= 0x10000,
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116 CODEC_ID_PCM_S16BE,
117 CODEC_ID_PCM_U16LE,
118 CODEC_ID_PCM_U16BE,
119 CODEC_ID_PCM_S8,
120 CODEC_ID_PCM_U8,
121 CODEC_ID_PCM_MULAW,
122 CODEC_ID_PCM_ALAW,
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123
124 /* various adpcm codecs */
17179d2d 125 CODEC_ID_ADPCM_IMA_QT= 0x11000,
0147f198 126 CODEC_ID_ADPCM_IMA_WAV,
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127 CODEC_ID_ADPCM_IMA_DK3,
128 CODEC_ID_ADPCM_IMA_DK4,
2fdf638b 129 CODEC_ID_ADPCM_IMA_WS,
7d8379f2 130 CODEC_ID_ADPCM_IMA_SMJPEG,
0147f198 131 CODEC_ID_ADPCM_MS,
e2a7bb28 132 CODEC_ID_ADPCM_4XM,
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133 CODEC_ID_ADPCM_XA,
134 CODEC_ID_ADPCM_ADX,
7d8379f2 135 CODEC_ID_ADPCM_EA,
e5966052 136 CODEC_ID_ADPCM_G726,
b3bfb299 137 CODEC_ID_ADPCM_CT,
659c3692 138 CODEC_ID_ADPCM_SWF,
891f64b3 139
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140 /* AMR */
141 CODEC_ID_AMR_NB= 0x12000,
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142 CODEC_ID_AMR_WB,
143
b8414bbd 144 /* RealAudio codecs*/
17179d2d 145 CODEC_ID_RA_144= 0x13000,
b8414bbd 146 CODEC_ID_RA_288,
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147
148 /* various DPCM codecs */
17179d2d 149 CODEC_ID_ROQ_DPCM= 0x14000,
3ef8be2b 150 CODEC_ID_INTERPLAY_DPCM,
9937e686 151 CODEC_ID_XAN_DPCM,
d08d7142 152 CODEC_ID_SOL_DPCM,
985180a1 153
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154 CODEC_ID_MP2= 0x15000,
155 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
156 CODEC_ID_AAC,
157 CODEC_ID_MPEG4AAC,
158 CODEC_ID_AC3,
159 CODEC_ID_DTS,
160 CODEC_ID_VORBIS,
161 CODEC_ID_DVAUDIO,
162 CODEC_ID_WMAV1,
163 CODEC_ID_WMAV2,
164 CODEC_ID_MACE3,
165 CODEC_ID_MACE6,
166 CODEC_ID_VMDAUDIO,
167 CODEC_ID_SONIC,
168 CODEC_ID_SONIC_LS,
ac2570a8 169 CODEC_ID_FLAC,
1ede228a 170 CODEC_ID_MP3ADU,
d2a7718d 171 CODEC_ID_MP3ON4,
85ad5695 172 CODEC_ID_SHORTEN,
5df8a0c6 173 CODEC_ID_ALAC,
034eeaa1 174 CODEC_ID_WESTWOOD_SND1,
bb4c2140 175 CODEC_ID_GSM,
ac2570a8 176
5c5dea3f 177 CODEC_ID_OGGTHEORA= 0x16000,
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178
179 /* subtitle codecs */
180 CODEC_ID_DVD_SUBTITLE= 0x17000,
181 CODEC_ID_DVB_SUBTITLE,
5c5dea3f 182
17179d2d 183 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
985180a1 184 stream (only used by libavformat) */
de6d9b64 185};
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186
187/* CODEC_ID_MP3LAME is absolete */
188#define CODEC_ID_MP3LAME CODEC_ID_MP3
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189
190enum CodecType {
4a663d80 191 CODEC_TYPE_UNKNOWN = -1,
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192 CODEC_TYPE_VIDEO,
193 CODEC_TYPE_AUDIO,
985180a1 194 CODEC_TYPE_DATA,
240c1657 195 CODEC_TYPE_SUBTITLE,
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196};
197
64863965 198/**
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199 * Pixel format. Notes:
200 *
201 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
202 * color is put together as:
203 * (A << 24) | (R << 16) | (G << 8) | B
204 * This is stored as BGRA on little endian CPU architectures and ARGB on
205 * big endian CPUs.
206 *
207 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
208 * image data is stored in AVFrame.data[0]. The palette is transported in
209 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
210 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
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211 * also endian-specific). Note also that the individual RGB palette
212 * components stored in AVFrame.data[1] should be in the range 0..255.
213 * This is important as many custom PAL8 video codecs that were designed
214 * to run on the IBM VGA graphics adapter use 6-bit palette components.
64863965 215 */
de6d9b64 216enum PixelFormat {
644a9262 217 PIX_FMT_NONE= -1,
cd394651 218 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
ebb177dd 219 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
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220 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
221 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
222 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
223 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
0f371e3e 224 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
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225 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
226 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
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227 PIX_FMT_RGB565, ///< always stored in cpu endianness
228 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
dab64ebc 229 PIX_FMT_GRAY8,
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230 PIX_FMT_MONOWHITE, ///< 0 is white
231 PIX_FMT_MONOBLACK, ///< 0 is black
232 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
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233 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
234 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
235 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
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236 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
237 PIX_FMT_XVMC_MPEG2_IDCT,
ebb177dd 238 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
f02be79d 239 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
dab64ebc 240 PIX_FMT_NB,
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241};
242
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243/* currently unused, may be used if 24/32 bits samples ever supported */
244enum SampleFormat {
64863965 245 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
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246 SAMPLE_FMT_S32, ///< signed 32 bits
247 SAMPLE_FMT_FLT, ///< float
248 SAMPLE_FMT_DBL, ///< double
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249};
250
de6d9b64 251/* in bytes */
bc8d1857 252#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 253
d7425f59 254/**
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255 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
256 * this is mainly needed because some optimized bitstream readers read
257 * 32 or 64 bit at once and could read over the end<br>
258 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
259 * MPEG bitstreams could cause overread and segfault
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260 */
261#define FF_INPUT_BUFFER_PADDING_SIZE 8
262
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263/**
264 * minimum encoding buffer size.
265 * used to avoid some checks during header writing
266 */
267#define FF_MIN_BUFFER_SIZE 16384
268
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269/* motion estimation type, EPZS by default */
270enum Motion_Est_ID {
101bea5f 271 ME_ZERO = 1,
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272 ME_FULL,
273 ME_LOG,
274 ME_PHODS,
275 ME_EPZS,
276 ME_X1
277};
278
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279enum AVRounding {
280 AV_ROUND_ZERO = 0, ///< round toward zero
281 AV_ROUND_INF = 1, ///< round away from zero
282 AV_ROUND_DOWN = 2, ///< round toward -infinity
283 AV_ROUND_UP = 3, ///< round toward +infinity
284 AV_ROUND_NEAR_INF = 5, ///< round to nearest and halfway cases away from zero
285};
286
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287typedef struct RcOverride{
288 int start_frame;
289 int end_frame;
290 int qscale; // if this is 0 then quality_factor will be used instead
291 float quality_factor;
292} RcOverride;
293
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294/* only for ME compatiblity with old apps */
295extern int motion_estimation_method;
296
4e00e76b 297#define FF_MAX_B_FRAMES 8
9dbcbd92 298
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299/* encoding support
300 these flags can be passed in AVCodecContext.flags before initing
bb628dae 301 Note: not everything is supported yet.
a949d72e 302*/
de6d9b64 303
64863965 304#define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
dba019da 305#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
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306#define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
307#define CODEC_FLAG_GMC 0x0020 ///< use GMC
ca7d05d5 308#define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
64863965 309#define CODEC_FLAG_PART 0x0080 ///< use data partitioning
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310/* parent program gurantees that the input for b-frame containing streams is not written to
311 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 312#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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313#define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
314#define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
315#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
316#define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
bb628dae 317#define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
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318#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
319#define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
d7425f59 320 of only at frame boundaries */
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321#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
322#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
3bb07d61 323#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
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324#define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
325#define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
326#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
327#define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
21e59552 328/* Fx : Flag for h263+ extra options */
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329#define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
330#define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
64863965 331#define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
f2f6134b 332#define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
1f26c6f3 333#define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
dba019da 334#define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
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335#define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
336#define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
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337#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
338#define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
baaf3f46 339#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
303e50e6 340#define CODEC_FLAG_CLOSED_GOP 0x80000000
6fc5b059 341#define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
03581772 342#define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
09b0499f 343#define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
6fc5b059 344
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345/* Unsupported options :
346 * Syntax Arithmetic coding (SAC)
21e59552 347 * Reference Picture Selection
ba58dabc 348 * Independant Segment Decoding */
21e59552 349/* /Fx */
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350/* codec capabilities */
351
64863965 352#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
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353/**
354 * Codec uses get_buffer() for allocating buffers.
355 * direct rendering method 1
356 */
357#define CODEC_CAP_DR1 0x0002
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358/* if 'parse_only' field is true, then avcodec_parse_frame() can be
359 used */
360#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 361#define CODEC_CAP_TRUNCATED 0x0008
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362/* codec can export data for HW decoding (XvMC) */
363#define CODEC_CAP_HWACCEL 0x0010
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364/**
365 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
366 * if this is not set, the codec is guranteed to never be feeded with NULL data
367 */
6f824977 368#define CODEC_CAP_DELAY 0x0020
bf89e6b1 369
bb628dae 370//the following defines may change, don't expect compatibility if you use them
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371#define MB_TYPE_INTRA4x4 0x0001
372#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
373#define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
374#define MB_TYPE_16x16 0x0008
375#define MB_TYPE_16x8 0x0010
376#define MB_TYPE_8x16 0x0020
377#define MB_TYPE_8x8 0x0040
378#define MB_TYPE_INTERLACED 0x0080
379#define MB_TYPE_DIRECT2 0x0100 //FIXME
380#define MB_TYPE_ACPRED 0x0200
381#define MB_TYPE_GMC 0x0400
382#define MB_TYPE_SKIP 0x0800
383#define MB_TYPE_P0L0 0x1000
384#define MB_TYPE_P1L0 0x2000
385#define MB_TYPE_P0L1 0x4000
386#define MB_TYPE_P1L1 0x8000
387#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
388#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
389#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
390#define MB_TYPE_QUANT 0x00010000
391#define MB_TYPE_CBP 0x00020000
392//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
393
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394/**
395 * Pan Scan area.
396 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
397 */
398typedef struct AVPanScan{
399 /**
400 * id.
401 * - encoding: set by user.
402 * - decoding: set by lavc
403 */
404 int id;
405
406 /**
407 * width and height in 1/16 pel
408 * - encoding: set by user.
409 * - decoding: set by lavc
410 */
411 int width;
412 int height;
413
414 /**
415 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
416 * - encoding: set by user.
417 * - decoding: set by lavc
418 */
419 int16_t position[3][2];
420}AVPanScan;
421
492cd3a9 422#define FF_COMMON_FRAME \
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423 /**\
424 * pointer to the picture planes.\
425 * this might be different from the first allocated byte\
426 * - encoding: \
427 * - decoding: \
428 */\
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429 uint8_t *data[4];\
430 int linesize[4];\
431 /**\
32db2b1d 432 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
bb628dae 433 * this isn't used by lavc unless the default get/release_buffer() is used\
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434 * - encoding: \
435 * - decoding: \
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436 */\
437 uint8_t *base[4];\
438 /**\
439 * 1 -> keyframe, 0-> not\
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440 * - encoding: set by lavc\
441 * - decoding: set by lavc\
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442 */\
443 int key_frame;\
444\
445 /**\
0da71265 446 * picture type of the frame, see ?_TYPE below.\
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447 * - encoding: set by lavc for coded_picture (and set by user for input)\
448 * - decoding: set by lavc\
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449 */\
450 int pict_type;\
451\
452 /**\
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453 * presentation timestamp in time_base units (time when frame should be shown to user)\
454 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
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455 * - encoding: MUST be set by user\
456 * - decoding: set by lavc\
1e491e29 457 */\
be6784dc 458 int64_t pts;\
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459\
460 /**\
461 * picture number in bitstream order.\
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462 * - encoding: set by\
463 * - decoding: set by lavc\
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464 */\
465 int coded_picture_number;\
466 /**\
1e491e29 467 * picture number in display order.\
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468 * - encoding: set by\
469 * - decoding: set by lavc\
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470 */\
471 int display_picture_number;\
472\
473 /**\
158c7f05 474 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
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475 * - encoding: set by lavc for coded_picture (and set by user for input)\
476 * - decoding: set by lavc\
1e491e29 477 */\
158c7f05 478 int quality; \
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479\
480 /**\
481 * buffer age (1->was last buffer and dint change, 2->..., ...).\
158c7f05 482 * set to INT_MAX if the buffer has not been used yet \
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483 * - encoding: unused\
484 * - decoding: MUST be set by get_buffer()\
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485 */\
486 int age;\
487\
488 /**\
489 * is this picture used as reference\
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490 * - encoding: unused\
491 * - decoding: set by lavc (before get_buffer() call))\
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492 */\
493 int reference;\
494\
495 /**\
496 * QP table\
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497 * - encoding: unused\
498 * - decoding: set by lavc\
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499 */\
500 int8_t *qscale_table;\
501 /**\
502 * QP store stride\
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503 * - encoding: unused\
504 * - decoding: set by lavc\
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505 */\
506 int qstride;\
507\
508 /**\
509 * mbskip_table[mb]>=1 if MB didnt change\
510 * stride= mb_width = (width+15)>>4\
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511 * - encoding: unused\
512 * - decoding: set by lavc\
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513 */\
514 uint8_t *mbskip_table;\
515\
516 /**\
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517 * Motion vector table.\
518 * @code\
519 * example:\
520 * int mv_sample_log2= 4 - motion_subsample_log2;\
521 * int mb_width= (width+15)>>4;\
522 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
523 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
524 * @endcode\
a4d36c11 525 * - encoding: set by user\
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526 * - decoding: set by lavc\
527 */\
528 int16_t (*motion_val[2])[2];\
529\
530 /**\
531 * Macroblock type table\
532 * mb_type_base + mb_width + 2\
a4d36c11 533 * - encoding: set by user\
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534 * - decoding: set by lavc\
535 */\
536 uint32_t *mb_type;\
537\
538 /**\
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539 * log2 of the size of the block which a single vector in motion_val represents: \
540 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
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541 * - encoding: unused\
542 * - decoding: set by lavc\
543 */\
544 uint8_t motion_subsample_log2;\
545\
546 /**\
1e491e29 547 * for some private data of the user\
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548 * - encoding: unused\
549 * - decoding: set by user\
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550 */\
551 void *opaque;\
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552\
553 /**\
554 * error\
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555 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
556 * - decoding: unused\
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557 */\
558 uint64_t error[4];\
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559\
560 /**\
561 * type of the buffer (to keep track of who has to dealloc data[*])\
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562 * - encoding: set by the one who allocs it\
563 * - decoding: set by the one who allocs it\
3db320ea 564 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
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565 */\
566 int type;\
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567 \
568 /**\
569 * when decoding, this signal how much the picture must be delayed.\
570 * extra_delay = repeat_pict / (2*fps)\
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571 * - encoding: unused\
572 * - decoding: set by lavc\
2ec23b6d 573 */\
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574 int repeat_pict;\
575 \
576 /**\
577 * \
578 */\
579 int qscale_type;\
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580 \
581 /**\
582 * The content of the picture is interlaced.\
583 * - encoding: set by user\
584 * - decoding: set by lavc (default 0)\
585 */\
586 int interlaced_frame;\
587 \
588 /**\
9dad924e 589 * if the content is interlaced, is top field displayed first.\
2744ca9a 590 * - encoding: set by user\
9dad924e 591 * - decoding: set by lavc\
2744ca9a 592 */\
9dad924e 593 int top_field_first;\
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594 \
595 /**\
596 * Pan scan.\
597 * - encoding: set by user\
598 * - decoding: set by lavc\
599 */\
600 AVPanScan *pan_scan;\
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601 \
602 /**\
603 * tell user application that palette has changed from previous frame.\
604 * - encoding: ??? (no palette-enabled encoder yet)\
605 * - decoding: set by lavc (default 0)\
606 */\
607 int palette_has_changed;\
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608 \
609 /**\
610 * Codec suggestion on buffer type if != 0\
611 * - encoding: unused\
612 * - decoding: set by lavc (before get_buffer() call))\
613 */\
614 int buffer_hints;\
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615\
616 /**\
617 * DCT coeffitients\
618 * - encoding: unused\
619 * - decoding: set by lavc\
620 */\
621 short *dct_coeff;\
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622\
623 /**\
624 * Motion referece frame index\
625 * - encoding: set by user\
626 * - decoding: set by lavc\
627 */\
628 int8_t *ref_index[2];
2ec23b6d 629
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630#define FF_QSCALE_TYPE_MPEG1 0
631#define FF_QSCALE_TYPE_MPEG2 1
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632
633#define FF_BUFFER_TYPE_INTERNAL 1
9b56edf5 634#define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
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635#define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
636#define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
4e00e76b 637
1e491e29 638
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639#define FF_I_TYPE 1 // Intra
640#define FF_P_TYPE 2 // Predicted
641#define FF_B_TYPE 3 // Bi-dir predicted
642#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
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643#define FF_SI_TYPE 5
644#define FF_SP_TYPE 6
1e491e29 645
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646#define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
647#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
648#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
649#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
650
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651/**
652 * Audio Video Frame.
653 */
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654typedef struct AVFrame {
655 FF_COMMON_FRAME
656} AVFrame;
1e491e29 657
14bea432 658#define DEFAULT_FRAME_RATE_BASE 1001000
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659
660/**
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661 * Used by av_log
662 */
663typedef struct AVCLASS AVClass;
664struct AVCLASS {
665 const char* class_name;
666 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
667 or AVFormatContext, which begin with an AVClass.
668 Needed because av_log is in libavcodec and has no visibility
669 of AVIn/OutputFormat */
670};
671
672/**
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673 * main external api structure.
674 */
de6d9b64 675typedef struct AVCodecContext {
b71901e6 676 /**
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677 * Info on struct for av_log
678 * - set by avcodec_alloc_context
679 */
43465395 680 AVClass *av_class;
bc874dae 681 /**
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682 * the average bitrate.
683 * - encoding: set by user. unused for constant quantizer encoding
684 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
b71901e6 685 */
de6d9b64 686 int bit_rate;
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687
688 /**
64863965 689 * number of bits the bitstream is allowed to diverge from the reference.
b71901e6 690 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
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691 * - encoding: set by user. unused for constant quantizer encoding
692 * - decoding: unused
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693 */
694 int bit_rate_tolerance;
695
696 /**
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697 * CODEC_FLAG_*.
698 * - encoding: set by user.
699 * - decoding: set by user.
b71901e6 700 */
de6d9b64 701 int flags;
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702
703 /**
704 * some codecs needs additionnal format info. It is stored here
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705 * - encoding: set by user.
706 * - decoding: set by lavc. (FIXME is this ok?)
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707 */
708 int sub_id;
709
710 /**
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711 * motion estimation algorithm used for video coding.
712 * - encoding: MUST be set by user.
713 * - decoding: unused
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714 */
715 int me_method;
716
717 /**
64863965 718 * some codecs need / can use extra-data like huffman tables.
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719 * mjpeg: huffman tables
720 * rv10: additional flags
b704e742 721 * mpeg4: global headers (they can be in the bitstream or here)
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722 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
723 * then extradata_size to avoid prolems if its read with the bitstream reader
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724 * - encoding: set/allocated/freed by lavc.
725 * - decoding: set/allocated/freed by user.
b71901e6 726 */
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727 void *extradata;
728 int extradata_size;
729
de6d9b64 730 /* video only */
b71901e6 731 /**
c0df9d75 732 * time base in which the timestamps are specified.
64863965 733 * - encoding: MUST be set by user
c0df9d75 734 * - decoding: set by lavc.
b71901e6 735 */
c0df9d75 736 AVRational time_base;
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737
738 /**
21adafec 739 * picture width / height.
64863965 740 * - encoding: MUST be set by user.
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741 * - decoding: set by lavc.
742 * Note, for compatibility its possible to set this instead of
743 * coded_width/height before decoding
b71901e6 744 */
de6d9b64 745 int width, height;
b71901e6 746
e769f053 747#define FF_ASPECT_EXTENDED 15
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748
749 /**
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750 * the number of pictures in a group of pitures, or 0 for intra_only.
751 * - encoding: set by user.
752 * - decoding: unused
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753 */
754 int gop_size;
755
756 /**
64863965 757 * pixel format, see PIX_FMT_xxx.
a3a5f4d6 758 * - encoding: set by user.
64863965 759 * - decoding: set by lavc.
b71901e6 760 */
e4eadb4b 761 enum PixelFormat pix_fmt;
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762
763 /**
764 * Frame rate emulation. If not zero lower layer (i.e. format handler)
765 * has to read frames at native frame rate.
766 * - encoding: set by user.
767 * - decoding: unused.
768 */
769 int rate_emu;
770
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771 /**
772 * if non NULL, 'draw_horiz_band' is called by the libavcodec
773 * decoder to draw an horizontal band. It improve cache usage. Not
774 * all codecs can do that. You must check the codec capabilities
775 * before
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776 * - encoding: unused
777 * - decoding: set by user.
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778 * @param height the height of the slice
779 * @param y the y position of the slice
780 * @param type 1->top field, 2->bottom field, 3->frame
781 * @param offset offset into the AVFrame.data from which the slice should be read
b71901e6 782 */
bf89e6b1 783 void (*draw_horiz_band)(struct AVCodecContext *s,
da64ecc3 784 const AVFrame *src, int offset[4],
3bb07d61 785 int y, int type, int height);
bf89e6b1 786
de6d9b64 787 /* audio only */
64863965 788 int sample_rate; ///< samples per sec
de6d9b64 789 int channels;
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790
791 /**
792 * audio sample format.
793 * - encoding: set by user.
794 * - decoding: set by lavc.
795 */
796 enum SampleFormat sample_fmt; ///< sample format, currenly unused
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797
798 /* the following data should not be initialized */
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799 int frame_size; ///< in samples, initialized when calling 'init'
800 int frame_number; ///< audio or video frame number
801 int real_pict_num; ///< returns the real picture number of previous encoded frame
1e491e29 802
b71901e6 803 /**
b71901e6 804 * number of frames the decoded output will be delayed relative to
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805 * the encoded input.
806 * - encoding: set by lavc.
807 * - decoding: unused
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808 */
809 int delay;
1ff662cc 810
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811 /* - encoding parameters */
812 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
813 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
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814
815 /**
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816 * minimum quantizer.
817 * - encoding: set by user.
818 * - decoding: unused
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819 */
820 int qmin;
821
822 /**
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823 * maximum quantizer.
824 * - encoding: set by user.
825 * - decoding: unused
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826 */
827 int qmax;
828
829 /**
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830 * maximum quantizer difference etween frames.
831 * - encoding: set by user.
832 * - decoding: unused
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833 */
834 int max_qdiff;
835
836 /**
64863965 837 * maximum number of b frames between non b frames.
b71901e6 838 * note: the output will be delayed by max_b_frames+1 relative to the input
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839 * - encoding: set by user.
840 * - decoding: unused
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841 */
842 int max_b_frames;
843
844 /**
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845 * qscale factor between ip and b frames.
846 * - encoding: set by user.
847 * - decoding: unused
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848 */
849 float b_quant_factor;
850
851 /** obsolete FIXME remove */
852 int rc_strategy;
8b4c7dbc 853 int b_frame_strategy;
9dbcbd92 854
b71901e6 855 /**
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856 * hurry up amount.
857 * - encoding: unused
858 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
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859 */
860 int hurry_up;
2417652e 861
de6d9b64 862 struct AVCodec *codec;
b71901e6 863
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864 void *priv_data;
865
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866 /* unused, FIXME remove*/
867 int rtp_mode;
644d98a4 868
bb628dae 869 int rtp_payload_size; /* The size of the RTP payload: the coder will */
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J
870 /* do it's best to deliver a chunk with size */
871 /* below rtp_payload_size, the chunk will start */
872 /* with a start code on some codecs like H.263 */
873 /* This doesn't take account of any particular */
874 /* headers inside the transmited RTP payload */
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875
876
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DB
877 /* The RTP callback: This function is called */
878 /* every time the encoder has a packet to send */
879 /* Depends on the encoder if the data starts */
880 /* with a Start Code (it should) H.263 does. */
881 /* mb_nb contains the number of macroblocks */
882 /* encoded in the RTP payload */
ebaa7e03 883 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
81401c1f 884
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885 /* statistics, used for 2-pass encoding */
886 int mv_bits;
887 int header_bits;
888 int i_tex_bits;
889 int p_tex_bits;
890 int i_count;
891 int p_count;
892 int skip_count;
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893 int misc_bits;
894
895 /**
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896 * number of bits used for the previously encoded frame.
897 * - encoding: set by lavc
7004ffb3 898 * - decoding: unused
b71901e6 899 */
098eefe1 900 int frame_bits;
7004ffb3 901
b71901e6 902 /**
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903 * private data of the user, can be used to carry app specific stuff.
904 * - encoding: set by user
905 * - decoding: set by user
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906 */
907 void *opaque;
908
de6d9b64 909 char codec_name[32];
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PG
910 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
911 enum CodecID codec_id; /* see CODEC_ID_xxx */
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912
913 /**
914 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
915 * this is used to workaround some encoder bugs
bd5a6020 916 * - encoding: set by user, if not then the default based on codec_id will be used
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917 * - decoding: set by user, will be converted to upper case by lavc during init
918 */
919 unsigned int codec_tag;
92ba5ffb 920
b71901e6 921 /**
64863965 922 * workaround bugs in encoders which sometimes cannot be detected automatically.
59fa3f96 923 * - encoding: set by user
64863965 924 * - decoding: set by user
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925 */
926 int workaround_bugs;
64863965 927#define FF_BUG_AUTODETECT 1 ///< autodetection
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928#define FF_BUG_OLD_MSMPEG4 2
929#define FF_BUG_XVID_ILACE 4
930#define FF_BUG_UMP4 8
931#define FF_BUG_NO_PADDING 16
3116cb14 932#define FF_BUG_AMV 32
ac0c6638 933#define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
03e93d35 934#define FF_BUG_QPEL_CHROMA 64
db794953 935#define FF_BUG_STD_QPEL 128
36df8805 936#define FF_BUG_QPEL_CHROMA2 256
c40c3482 937#define FF_BUG_DIRECT_BLOCKSIZE 512
1c6dcb0f 938#define FF_BUG_EDGE 1024
b44bdf7e 939#define FF_BUG_HPEL_CHROMA 2048
4ccde216 940#define FF_BUG_DC_CLIP 4096
59fa3f96 941#define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
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942//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
943
b71901e6 944 /**
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945 * luma single coeff elimination threshold.
946 * - encoding: set by user
947 * - decoding: unused
b71901e6 948 */
1f6b6e50 949 int luma_elim_threshold;
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950
951 /**
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952 * chroma single coeff elimination threshold.
953 * - encoding: set by user
954 * - decoding: unused
b71901e6 955 */
1f6b6e50 956 int chroma_elim_threshold;
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957
958 /**
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959 * strictly follow the std (MPEG4, ...).
960 * - encoding: set by user
961 * - decoding: unused
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962 */
963 int strict_std_compliance;
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964#define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
965#define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
966#define FF_COMPLIANCE_NORMAL 0
967#define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
968#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
969
b71901e6 970 /**
64863965 971 * qscale offset between ip and b frames.
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972 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
973 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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974 * - encoding: set by user.
975 * - decoding: unused
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976 */
977 float b_quant_offset;
978
979 /**
ce3bcaed 980 * error resilience higher values will detect more errors but may missdetect
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981 * some more or less valid parts as errors.
982 * - encoding: unused
983 * - decoding: set by user
b71901e6 984 */
1f6b6e50 985 int error_resilience;
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986#define FF_ER_CAREFULL 1
987#define FF_ER_COMPLIANT 2
988#define FF_ER_AGGRESSIVE 3
989#define FF_ER_VERY_AGGRESSIVE 4
ae72cda6 990
6b72ac63 991 /**
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992 * called at the beginning of each frame to get a buffer for it.
993 * if pic.reference is set then the frame will be read later by lavc
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994 * avcodec_align_dimensions() should be used to find the required width and
995 * height, as they normally need to be rounded up to the next multiple of 16
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996 * - encoding: unused
997 * - decoding: set by lavc, user can override
b71901e6 998 */
492cd3a9 999 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
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1000
1001 /**
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1002 * called to release buffers which where allocated with get_buffer.
1003 * a released buffer can be reused in get_buffer()
1004 * pic.data[*] must be set to NULL
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1005 * - encoding: unused
1006 * - decoding: set by lavc, user can override
b71901e6 1007 */
492cd3a9 1008 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
0fd90455 1009
b71901e6 1010 /**
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1011 * if 1 the stream has a 1 frame delay during decoding.
1012 * - encoding: set by lavc
64863965 1013 * - decoding: set by lavc
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1014 */
1015 int has_b_frames;
b71901e6 1016
64863965 1017 int block_align; ///< used by some WAV based audio codecs
ce980a95 1018
64863965 1019 int parse_only; /* - decoding only: if true, only parsing is done
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1020 (function avcodec_parse_frame()). The frame
1021 data is returned. Only MPEG codecs support this now. */
ce980a95 1022
b71901e6 1023 /**
e4eadb4b 1024 * 0-> h263 quant 1-> mpeg quant.
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1025 * - encoding: set by user.
1026 * - decoding: unused
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1027 */
1028 int mpeg_quant;
ce980a95 1029
b71901e6 1030 /**
64863965
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1031 * pass1 encoding statistics output buffer.
1032 * - encoding: set by lavc
1033 * - decoding: unused
b71901e6 1034 */
64863965 1035 char *stats_out;
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1036
1037 /**
1038 * pass2 encoding statistics input buffer.
1039 * concatenated stuff from stats_out of pass1 should be placed here
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1040 * - encoding: allocated/set/freed by user
1041 * - decoding: unused
b71901e6
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1042 */
1043 char *stats_in;
1044
1045 /**
64863965 1046 * ratecontrol qmin qmax limiting method.
b71901e6 1047 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
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1048 * - encoding: set by user.
1049 * - decoding: unused
b71901e6 1050 */
ce980a95 1051 float rc_qsquish;
b71901e6 1052
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MN
1053 float rc_qmod_amp;
1054 int rc_qmod_freq;
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MN
1055
1056 /**
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1057 * ratecontrol override, see RcOverride.
1058 * - encoding: allocated/set/freed by user.
1059 * - decoding: unused
b71901e6 1060 */
ce980a95
MN
1061 RcOverride *rc_override;
1062 int rc_override_count;
b71901e6
MN
1063
1064 /**
64863965
MN
1065 * rate control equation.
1066 * - encoding: set by user
1067 * - decoding: unused
b71901e6 1068 */
ce980a95 1069 char *rc_eq;
b71901e6
MN
1070
1071 /**
64863965
MN
1072 * maximum bitrate.
1073 * - encoding: set by user.
1074 * - decoding: unused
b71901e6 1075 */
ce980a95 1076 int rc_max_rate;
b71901e6
MN
1077
1078 /**
64863965
MN
1079 * minimum bitrate.
1080 * - encoding: set by user.
1081 * - decoding: unused
b71901e6 1082 */
ce980a95 1083 int rc_min_rate;
b71901e6
MN
1084
1085 /**
64863965
MN
1086 * decoder bitstream buffer size.
1087 * - encoding: set by user.
1088 * - decoding: unused
b71901e6 1089 */
ce980a95
MN
1090 int rc_buffer_size;
1091 float rc_buffer_aggressivity;
b71901e6
MN
1092
1093 /**
64863965 1094 * qscale factor between p and i frames.
a1e257b2
MN
1095 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1096 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
64863965
MN
1097 * - encoding: set by user.
1098 * - decoding: unused
b71901e6
MN
1099 */
1100 float i_quant_factor;
1101
1102 /**
64863965 1103 * qscale offset between p and i frames.
64863965
MN
1104 * - encoding: set by user.
1105 * - decoding: unused
b71901e6
MN
1106 */
1107 float i_quant_offset;
1108
1109 /**
64863965
MN
1110 * initial complexity for pass1 ratecontrol.
1111 * - encoding: set by user.
1112 * - decoding: unused
b71901e6 1113 */
ce980a95 1114 float rc_initial_cplx;
917e06c8 1115
b71901e6 1116 /**
64863965
MN
1117 * dct algorithm, see FF_DCT_* below.
1118 * - encoding: set by user
1119 * - decoding: unused
b71901e6 1120 */
28db7fce 1121 int dct_algo;
c7e07931 1122#define FF_DCT_AUTO 0
28db7fce 1123#define FF_DCT_FASTINT 1
c7e07931
MO
1124#define FF_DCT_INT 2
1125#define FF_DCT_MMX 3
1126#define FF_DCT_MLIB 4
05c4072b 1127#define FF_DCT_ALTIVEC 5
65e4c8c9 1128#define FF_DCT_FAAN 6
c5d309f2
MN
1129
1130 /**
64863965
MN
1131 * luminance masking (0-> disabled).
1132 * - encoding: set by user
1133 * - decoding: unused
c5d309f2
MN
1134 */
1135 float lumi_masking;
1136
1137 /**
64863965
MN
1138 * temporary complexity masking (0-> disabled).
1139 * - encoding: set by user
1140 * - decoding: unused
c5d309f2
MN
1141 */
1142 float temporal_cplx_masking;
1143
1144 /**
64863965
MN
1145 * spatial complexity masking (0-> disabled).
1146 * - encoding: set by user
1147 * - decoding: unused
c5d309f2
MN
1148 */
1149 float spatial_cplx_masking;
1150
1151 /**
64863965
MN
1152 * p block masking (0-> disabled).
1153 * - encoding: set by user
1154 * - decoding: unused
c5d309f2
MN
1155 */
1156 float p_masking;
15415af4 1157
5e746b99 1158 /**
64863965
MN
1159 * darkness masking (0-> disabled).
1160 * - encoding: set by user
1161 * - decoding: unused
5e746b99
MN
1162 */
1163 float dark_masking;
0c2dd16e 1164
3a694b04
NK
1165
1166 /* for binary compatibility */
1167 int unused;
1168
0c2dd16e 1169 /**
64863965
MN
1170 * idct algorithm, see FF_IDCT_* below.
1171 * - encoding: set by user
1172 * - decoding: set by user
2ad1516a
MN
1173 */
1174 int idct_algo;
1175#define FF_IDCT_AUTO 0
1176#define FF_IDCT_INT 1
1177#define FF_IDCT_SIMPLE 2
1178#define FF_IDCT_SIMPLEMMX 3
1179#define FF_IDCT_LIBMPEG2MMX 4
1180#define FF_IDCT_PS2 5
1181#define FF_IDCT_MLIB 6
1182#define FF_IDCT_ARM 7
05c4072b 1183#define FF_IDCT_ALTIVEC 8
b82cdc72 1184#define FF_IDCT_SH4 9
bd7d1ea7 1185#define FF_IDCT_SIMPLEARM 10
0fa8158d 1186#define FF_IDCT_H264 11
8b6103da 1187#define FF_IDCT_VP3 12
6ad1fa5a 1188#define FP_IDCT_IPP 13
2ad1516a 1189
144f0625 1190 /**
64863965
MN
1191 * slice count.
1192 * - encoding: set by lavc
1193 * - decoding: set by user (or 0)
144f0625
MN
1194 */
1195 int slice_count;
1196 /**
64863965
MN
1197 * slice offsets in the frame in bytes.
1198 * - encoding: set/allocated by lavc
1199 * - decoding: set/allocated by user (or NULL)
144f0625
MN
1200 */
1201 int *slice_offset;
1202
4d2858de 1203 /**
64863965
MN
1204 * error concealment flags.
1205 * - encoding: unused
1206 * - decoding: set by user
4d2858de
MN
1207 */
1208 int error_concealment;
1209#define FF_EC_GUESS_MVS 1
1210#define FF_EC_DEBLOCK 2
1211
6b72ac63 1212 /**
bec89a84 1213 * dsp_mask could be add used to disable unwanted CPU features
8350df97 1214 * CPU features (i.e. MMX, SSE. ...)
bec89a84
ZK
1215 *
1216 * with FORCE flag you may instead enable given CPU features
1217 * (Dangerous: usable in case of misdetection, improper usage however will
1218 * result into program crash)
1219 */
1220 unsigned dsp_mask;
1221#define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1222 /* lower 16 bits - CPU features */
1223#ifdef HAVE_MMX
1224#define FF_MM_MMX 0x0001 /* standard MMX */
1225#define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1226#define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1227#define FF_MM_SSE 0x0008 /* SSE functions */
1228#define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
e42a152b 1229#define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
bec89a84 1230#endif /* HAVE_MMX */
11f18faf
MN
1231
1232 /**
64863965
MN
1233 * bits per sample/pixel from the demuxer (needed for huffyuv).
1234 * - encoding: set by lavc
1235 * - decoding: set by user
11f18faf
MN
1236 */
1237 int bits_per_sample;
1238
1239 /**
64863965
MN
1240 * prediction method (needed for huffyuv).
1241 * - encoding: set by user
1242 * - decoding: unused
11f18faf
MN
1243 */
1244 int prediction_method;
1245#define FF_PRED_LEFT 0
1246#define FF_PRED_PLANE 1
1247#define FF_PRED_MEDIAN 2
5d3cea3a
MN
1248
1249 /**
5ff85f1d 1250 * sample aspect ratio (0 if unknown).
1f26c6f3 1251 * numerator and denominator must be relative prime and smaller then 256 for some video standards
64863965
MN
1252 * - encoding: set by user.
1253 * - decoding: set by lavc.
5d3cea3a 1254 */
5ff85f1d 1255 AVRational sample_aspect_ratio;
1e491e29
MN
1256
1257 /**
64863965
MN
1258 * the picture in the bitstream.
1259 * - encoding: set by lavc
1260 * - decoding: set by lavc
1e491e29 1261 */
492cd3a9 1262 AVFrame *coded_frame;
c8c437bc
MN
1263
1264 /**
64863965
MN
1265 * debug.
1266 * - encoding: set by user.
1267 * - decoding: set by user.
c8c437bc
MN
1268 */
1269 int debug;
1270#define FF_DEBUG_PICT_INFO 1
1271#define FF_DEBUG_RC 2
1272#define FF_DEBUG_BITSTREAM 4
1273#define FF_DEBUG_MB_TYPE 8
1274#define FF_DEBUG_QP 16
1275#define FF_DEBUG_MV 32
8289c6fa 1276#define FF_DEBUG_DCT_COEFF 0x00000040
41773b73
MN
1277#define FF_DEBUG_SKIP 0x00000080
1278#define FF_DEBUG_STARTCODE 0x00000100
1279#define FF_DEBUG_PTS 0x00000200
46b4feec 1280#define FF_DEBUG_ER 0x00000400
0da71265 1281#define FF_DEBUG_MMCO 0x00000800
8fc6c2b5 1282#define FF_DEBUG_BUGS 0x00001000
864119b6
MN
1283#define FF_DEBUG_VIS_QP 0x00002000
1284#define FF_DEBUG_VIS_MB_TYPE 0x00004000
140cb663
MN
1285
1286 /**
0c9bbaec
WH
1287 * debug.
1288 * - encoding: set by user.
1289 * - decoding: set by user.
1290 */
1291 int debug_mv;
1292#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1293#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1294#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1295
1296 /**
64863965
MN
1297 * error.
1298 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1299 * - decoding: unused
140cb663
MN
1300 */
1301 uint64_t error[4];
17a70fde
MN
1302
1303 /**
64863965 1304 * minimum MB quantizer.
6e0d8c06 1305 * - encoding: unused
64863965 1306 * - decoding: unused
17a70fde
MN
1307 */
1308 int mb_qmin;
1309
1310 /**
64863965 1311 * maximum MB quantizer.
6e0d8c06 1312 * - encoding: unused
64863965 1313 * - decoding: unused
17a70fde
MN
1314 */
1315 int mb_qmax;
1457ab52
MN
1316
1317 /**
64863965
MN
1318 * motion estimation compare function.
1319 * - encoding: set by user.
1320 * - decoding: unused
1457ab52
MN
1321 */
1322 int me_cmp;
1323 /**
64863965
MN
1324 * subpixel motion estimation compare function.
1325 * - encoding: set by user.
1326 * - decoding: unused
1457ab52
MN
1327 */
1328 int me_sub_cmp;
1329 /**
64863965
MN
1330 * macroblock compare function (not supported yet).
1331 * - encoding: set by user.
1332 * - decoding: unused
1457ab52
MN
1333 */
1334 int mb_cmp;
622348f9
MN
1335 /**
1336 * interlaced dct compare function
1337 * - encoding: set by user.
1338 * - decoding: unused
1339 */
1340 int ildct_cmp;
1457ab52
MN
1341#define FF_CMP_SAD 0
1342#define FF_CMP_SSE 1
1343#define FF_CMP_SATD 2
1344#define FF_CMP_DCT 3
1345#define FF_CMP_PSNR 4
1346#define FF_CMP_BIT 5
1347#define FF_CMP_RD 6
1348#define FF_CMP_ZERO 7
622348f9
MN
1349#define FF_CMP_VSAD 8
1350#define FF_CMP_VSSE 9
e6a2ac34 1351#define FF_CMP_NSSE 10
26efc54e
MN
1352#define FF_CMP_W53 11
1353#define FF_CMP_W97 12
0fd6aea1 1354#define FF_CMP_DCTMAX 13
1457ab52
MN
1355#define FF_CMP_CHROMA 256
1356
1357 /**
64863965
MN
1358 * ME diamond size & shape.
1359 * - encoding: set by user.
1360 * - decoding: unused
1457ab52
MN
1361 */
1362 int dia_size;
b07a5980
MN
1363
1364 /**
64863965
MN
1365 * amount of previous MV predictors (2a+1 x 2a+1 square).
1366 * - encoding: set by user.
1367 * - decoding: unused
b07a5980
MN
1368 */
1369 int last_predictor_count;
70ac76c0 1370
f5fb6b34 1371 /**
64863965
MN
1372 * pre pass for motion estimation.
1373 * - encoding: set by user.
1374 * - decoding: unused
f5fb6b34
MN
1375 */
1376 int pre_me;
b07a5980 1377
70ac76c0 1378 /**
64863965
MN
1379 * motion estimation pre pass compare function.
1380 * - encoding: set by user.
1381 * - decoding: unused
70ac76c0
MN
1382 */
1383 int me_pre_cmp;
826f429a 1384
70ac76c0 1385 /**
64863965
MN
1386 * ME pre pass diamond size & shape.
1387 * - encoding: set by user.
1388 * - decoding: unused
70ac76c0
MN
1389 */
1390 int pre_dia_size;
1391
826f429a 1392 /**
64863965
MN
1393 * subpel ME quality.
1394 * - encoding: set by user.
1395 * - decoding: unused
826f429a
MN
1396 */
1397 int me_subpel_quality;
1398
a33c7159 1399 /**
64863965 1400 * callback to negotiate the pixelFormat.
a33c7159
MN
1401 * @param fmt is the list of formats which are supported by the codec,
1402 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1403 * the first is allways the native one
1404 * @return the choosen format
64863965
MN
1405 * - encoding: unused
1406 * - decoding: set by user, if not set then the native format will always be choosen
a33c7159 1407 */
494c56d3 1408 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
e2f9490e
FB
1409
1410 /**
1411 * DTG active format information (additionnal aspect ratio
1412 * information only used in DVB MPEG2 transport streams). 0 if
1413 * not set.
1414 *
64863965
MN
1415 * - encoding: unused.
1416 * - decoding: set by decoder
e2f9490e
FB
1417 */
1418 int dtg_active_format;
1419#define FF_DTG_AFD_SAME 8
1420#define FF_DTG_AFD_4_3 9
1421#define FF_DTG_AFD_16_9 10
1422#define FF_DTG_AFD_14_9 11
1423#define FF_DTG_AFD_4_3_SP_14_9 13
1424#define FF_DTG_AFD_16_9_SP_14_9 14
1425#define FF_DTG_AFD_SP_4_3 15
1426
ebbcdc9a
MN
1427 /**
1428 * Maximum motion estimation search range in subpel units.
1429 * if 0 then no limit
1430 *
64863965
MN
1431 * - encoding: set by user.
1432 * - decoding: unused.
ebbcdc9a 1433 */
59e0ac8e 1434 int me_range;
ebbcdc9a 1435
65f7062d 1436 /**
1984f635
MN
1437 * intra quantizer bias.
1438 * - encoding: set by user.
1439 * - decoding: unused
1440 */
1441 int intra_quant_bias;
1442#define FF_DEFAULT_QUANT_BIAS 999999
1443
1444 /**
1445 * inter quantizer bias.
1446 * - encoding: set by user.
1447 * - decoding: unused
1448 */
1449 int inter_quant_bias;
5cd62665
ZK
1450
1451 /**
1452 * color table ID.
1453 * - encoding: unused.
1454 * - decoding: which clrtable should be used for 8bit RGB images
1455 * table have to be stored somewhere FIXME
1456 */
1457 int color_table_id;
1984f635 1458
d90cf87b
MN
1459 /**
1460 * internal_buffer count.
bb628dae 1461 * Don't touch, used by lavc default_get_buffer()
d90cf87b
MN
1462 */
1463 int internal_buffer_count;
1464
1465 /**
1466 * internal_buffers.
bb628dae 1467 * Don't touch, used by lavc default_get_buffer()
d90cf87b
MN
1468 */
1469 void *internal_buffer;
158c7f05
MN
1470
1471#define FF_LAMBDA_SHIFT 7
1472#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1473#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1474#define FF_LAMBDA_MAX (256*128-1)
1475
1476#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
3d2e8cce
MN
1477 /**
1478 * global quality for codecs which cannot change it per frame.
1479 * this should be proportional to MPEG1/2/4 qscale.
1480 * - encoding: set by user.
1481 * - decoding: unused
1482 */
1483 int global_quality;
11e659c2
MN
1484
1485#define FF_CODER_TYPE_VLC 0
1486#define FF_CODER_TYPE_AC 1
1487 /**
1488 * coder type
1489 * - encoding: set by user.
1490 * - decoding: unused
1491 */
1492 int coder_type;
1493
1494 /**
1495 * context model
1496 * - encoding: set by user.
1497 * - decoding: unused
1498 */
1499 int context_model;
3bb07d61
MN
1500
1501 /**
1502 * slice flags
1503 * - encoding: unused
1504 * - decoding: set by user.
1505 */
1506 int slice_flags;
1507#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1508#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1509#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1510
fb364ada
IK
1511 /**
1512 * XVideo Motion Acceleration
1513 * - encoding: forbidden
1514 * - decoding: set by decoder
1515 */
1516 int xvmc_acceleration;
7d1c3fc1
MN
1517
1518 /**
1519 * macroblock decision mode
1520 * - encoding: set by user.
1521 * - decoding: unused
1522 */
1523 int mb_decision;
1524#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1525#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1526#define FF_MB_DECISION_RD 2 ///< rate distoration
d6eb3c50
MN
1527
1528 /**
1529 * custom intra quantization matrix
1530 * - encoding: set by user, can be NULL
1531 * - decoding: set by lavc
1532 */
1533 uint16_t *intra_matrix;
1534
1535 /**
1536 * custom inter quantization matrix
1537 * - encoding: set by user, can be NULL
1538 * - decoding: set by lavc
1539 */
1540 uint16_t *inter_matrix;
7d1c3fc1 1541
541ae140
MN
1542 /**
1543 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1544 * this is used to workaround some encoder bugs
1545 * - encoding: unused
1546 * - decoding: set by user, will be converted to upper case by lavc during init
1547 */
1548 unsigned int stream_codec_tag;
05fbd0a2
MN
1549
1550 /**
1551 * scene change detection threshold.
1552 * 0 is default, larger means fewer detected scene changes
1553 * - encoding: set by user.
1554 * - decoding: unused
1555 */
1556 int scenechange_threshold;
158c7f05
MN
1557
1558 /**
1559 * minimum lagrange multipler
1560 * - encoding: set by user.
1561 * - decoding: unused
1562 */
1563 int lmin;
1564
1565 /**
1566 * maximum lagrange multipler
1567 * - encoding: set by user.
1568 * - decoding: unused
1569 */
1570 int lmax;
2a2bbcb0
MM
1571
1572 /**
1573 * Palette control structure
1574 * - encoding: ??? (no palette-enabled encoder yet)
1575 * - decoding: set by user.
1576 */
1577 struct AVPaletteControl *palctrl;
821cb11f
MN
1578
1579 /**
1580 * noise reduction strength
1581 * - encoding: set by user.
1582 * - decoding: unused
1583 */
1584 int noise_reduction;
fa384dcc 1585
074c4ca7 1586 /**
e1c2a5a0
RT
1587 * called at the beginning of a frame to get cr buffer for it.
1588 * buffer type (size, hints) must be the same. lavc won't check it.
1589 * lavc will pass previous buffer in pic, function should return
1590 * same buffer or new buffer with old frame "painted" into it.
1591 * if pic.data[0] == NULL must behave like get_buffer().
074c4ca7 1592 * - encoding: unused
e1c2a5a0 1593 * - decoding: set by lavc, user can override
074c4ca7 1594 */
e1c2a5a0 1595 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
ba58dabc
MN
1596
1597 /**
1598 * number of bits which should be loaded into the rc buffer before decoding starts
1599 * - encoding: set by user.
1600 * - decoding: unused
1601 */
1602 int rc_initial_buffer_occupancy;
1603
1604 /**
1605 *
1606 * - encoding: set by user.
1607 * - decoding: unused
1608 */
1609 int inter_threshold;
1610
1611 /**
1612 * CODEC_FLAG2_*.
1613 * - encoding: set by user.
1614 * - decoding: set by user.
1615 */
1616 int flags2;
7ebfc0ea
MN
1617
1618 /**
1619 * simulates errors in the bitstream to test error concealment.
1620 * - encoding: set by user.
1621 * - decoding: unused.
1622 */
1623 int error_rate;
a1e257b2
MN
1624
1625 /**
1626 * MP3 antialias algorithm, see FF_AA_* below.
1627 * - encoding: unused
1628 * - decoding: set by user
1629 */
1630 int antialias_algo;
1631#define FF_AA_AUTO 0
1632#define FF_AA_FASTINT 1 //not implemented yet
1633#define FF_AA_INT 2
1634#define FF_AA_FLOAT 3
77ea0d4b
MN
1635 /**
1636 * Quantizer noise shaping.
1637 * - encoding: set by user
1638 * - decoding: unused
1639 */
1640 int quantizer_noise_shaping;
9c3d33d6
MN
1641
1642 /**
1643 * Thread count.
1644 * is used to decide how many independant tasks should be passed to execute()
1645 * - encoding: set by user
1646 * - decoding: set by user
1647 */
1648 int thread_count;
1649
1650 /**
1651 * the codec may call this to execute several independant things. it will return only after
1652 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1653 * default implementation will execute the parts serially
399cec2f 1654 * @param count the number of things to execute
9c3d33d6
MN
1655 * - encoding: set by lavc, user can override
1656 * - decoding: set by lavc, user can override
1657 */
1658 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1659
1660 /**
1661 * Thread opaque.
1662 * can be used by execute() to store some per AVCodecContext stuff.
1663 * - encoding: set by execute()
1664 * - decoding: set by execute()
1665 */
1666 void *thread_opaque;
a4d36c11
MN
1667
1668 /**
f20f8a8b
MN
1669 * Motion estimation threshold. under which no motion estimation is
1670 * performed, but instead the user specified motion vectors are used
a4d36c11
MN
1671 *
1672 * - encoding: set by user
f20f8a8b 1673 * - decoding: unused
a4d36c11 1674 */
2750b827 1675 int me_threshold;
f20f8a8b
MN
1676
1677 /**
1678 * Macroblock threshold. under which the user specified macroblock types will be used
1679 * - encoding: set by user
1680 * - decoding: unused
1681 */
1682 int mb_threshold;
bf266e19
MN
1683
1684 /**
d4c5d2ad 1685 * precision of the intra dc coefficient - 8.
bf266e19
MN
1686 * - encoding: set by user
1687 * - decoding: unused
1688 */
1689 int intra_dc_precision;
d4c5d2ad
MN
1690
1691 /**
1692 * noise vs. sse weight for the nsse comparsion function.
1693 * - encoding: set by user
1694 * - decoding: unused
1695 */
1696 int nsse_weight;
0dfd33c3
MN
1697
1698 /**
160d679c 1699 * number of macroblock rows at the top which are skipped.
0dfd33c3
MN
1700 * - encoding: unused
1701 * - decoding: set by user
1702 */
1703 int skip_top;
1704
1705 /**
160d679c 1706 * number of macroblock rows at the bottom which are skipped.
0dfd33c3
MN
1707 * - encoding: unused
1708 * - decoding: set by user
1709 */
1710 int skip_bottom;
baced9f5
MN
1711
1712 /**
1713 * profile
1714 * - encoding: set by user
1715 * - decoding: set by lavc
1716 */
1717 int profile;
1718#define FF_PROFILE_UNKNOWN -99
1719
1720 /**
1721 * level
1722 * - encoding: set by user
1723 * - decoding: set by lavc
1724 */
1725 int level;
1726#define FF_LEVEL_UNKNOWN -99
178fcca8
MN
1727
1728 /**
1729 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1730 * - encoding: unused
1731 * - decoding: set by user
1732 */
1733 int lowres;
21adafec
MN
1734
1735 /**
bbf18b21 1736 * bitsream width / height. may be different from width/height if lowres
21adafec
MN
1737 * or other things are used
1738 * - encoding: unused
1739 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1740 */
1741 int coded_width, coded_height;
bbf18b21
MN
1742
1743 /**
1744 * frame skip threshold
1745 * - encoding: set by user
1746 * - decoding: unused
1747 */
1748 int frame_skip_threshold;
1749
1750 /**
1751 * frame skip factor
1752 * - encoding: set by user
1753 * - decoding: unused
1754 */
1755 int frame_skip_factor;
0fd6aea1
MN
1756
1757 /**
1758 * frame skip exponent
1759 * - encoding: set by user
1760 * - decoding: unused
1761 */
1762 int frame_skip_exp;
1763
1764 /**
1765 * frame skip comparission function
1766 * - encoding: set by user.
1767 * - decoding: unused
1768 */
1769 int frame_skip_cmp;
957c743a
CM
1770
1771 /**
1772 * border processing masking. raises the quantizer for mbs on the borders
1773 * of the picture.
1774 * - encoding: set by user
1775 * - decoding: unused
1776 */
1777 float border_masking;
6e0d8c06
MN
1778
1779 /**
1780 * minimum MB lagrange multipler.
1781 * - encoding: set by user.
1782 * - decoding: unused
1783 */
1784 int mb_lmin;
1785
1786 /**
1787 * maximum MB lagrange multipler.
1788 * - encoding: set by user.
1789 * - decoding: unused
1790 */
1791 int mb_lmax;
09c3e44e
MN
1792
1793 /**
1794 *
1795 * - encoding: set by user.
1796 * - decoding: unused
1797 */
1798 int me_penalty_compensation;
de6d9b64
FB
1799} AVCodecContext;
1800
97d96aaa 1801
64863965
MN
1802/**
1803 * AVOption.
1804 */
97d96aaa
ZK
1805typedef struct AVOption {
1806 /** options' name */
1807 const char *name; /* if name is NULL, it indicates a link to next */
bec89a84
ZK
1808 /** short English text help or const struct AVOption* subpointer */
1809 const char *help; // const struct AVOption* sub;
97d96aaa
ZK
1810 /** offset to context structure where the parsed value should be stored */
1811 int offset;
1812 /** options' type */
1813 int type;
64863965
MN
1814#define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1815#define FF_OPT_TYPE_DOUBLE 2 ///< double
1816#define FF_OPT_TYPE_INT 3 ///< integer
1817#define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1818#define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
97d96aaa
ZK
1819//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1820#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1821#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1822 /** min value (min == max -> no limits) */
1823 double min;
1824 /** maximum value for double/int */
1825 double max;
1826 /** default boo [0,1]l/double/int value */
1827 double defval;
1828 /**
1829 * default string value (with optional semicolon delimited extra option-list
1830 * i.e. option1;option2;option3
1831 * defval might select other then first argument as default
1832 */
1833 const char *defstr;
97d96aaa
ZK
1834#define FF_OPT_MAX_DEPTH 10
1835} AVOption;
1836
64863965
MN
1837/**
1838 * AVCodec.
1839 */
de6d9b64 1840typedef struct AVCodec {
18f77016 1841 const char *name;
5d234974 1842 enum CodecType type;
9297ddd3 1843 enum CodecID id;
de6d9b64
FB
1844 int priv_data_size;
1845 int (*init)(AVCodecContext *);
0c1a9eda 1846 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
de6d9b64 1847 int (*close)(AVCodecContext *);
0fd90455 1848 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
0c1a9eda 1849 uint8_t *buf, int buf_size);
bf89e6b1 1850 int capabilities;
40c5fa26 1851 void *dummy; // FIXME remove next time we break binary compatibility
de6d9b64 1852 struct AVCodec *next;
7a06ff14 1853 void (*flush)(AVCodecContext *);
b0df362b 1854 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
fcee0164 1855 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
de6d9b64
FB
1856} AVCodec;
1857
97d96aaa 1858/**
d7425f59
MN
1859 * four components are given, that's all.
1860 * the last component is alpha
1861 */
de6d9b64 1862typedef struct AVPicture {
0c1a9eda 1863 uint8_t *data[4];
cd394651 1864 int linesize[4]; ///< number of bytes per line
de6d9b64
FB
1865} AVPicture;
1866
ba118447
MM
1867/**
1868 * AVPaletteControl
1869 * This structure defines a method for communicating palette changes
1870 * between and demuxer and a decoder.
1871 */
2e99641b 1872#define AVPALETTE_SIZE 1024
432d84c3 1873#define AVPALETTE_COUNT 256
ba118447
MM
1874typedef struct AVPaletteControl {
1875
1876 /* demuxer sets this to 1 to indicate the palette has changed;
1877 * decoder resets to 0 */
1878 int palette_changed;
1879
2a2bbcb0
MM
1880 /* 4-byte ARGB palette entries, stored in native byte order; note that
1881 * the individual palette components should be on a 8-bit scale; if
1882 * the palette data comes from a IBM VGA native format, the component
1883 * data is probably 6 bits in size and needs to be scaled */
2e99641b 1884 unsigned int palette[AVPALETTE_COUNT];
ba118447
MM
1885
1886} AVPaletteControl;
1887
240c1657
FB
1888typedef struct AVSubtitle {
1889 uint16_t format; /* 0 = graphics */
1890 uint16_t x;
1891 uint16_t y;
1892 uint16_t w;
1893 uint16_t h;
1894 uint16_t nb_colors;
1895 uint32_t start_display_time; /* relative to packet pts, in ms */
1896 uint32_t end_display_time; /* relative to packet pts, in ms */
1897 int linesize;
1898 uint32_t *rgba_palette;
1899 uint8_t *bitmap;
1900} AVSubtitle;
1901
de6d9b64
FB
1902extern AVCodec ac3_encoder;
1903extern AVCodec mp2_encoder;
9d36bdc9 1904extern AVCodec mp3lame_encoder;
81e0d0b4 1905extern AVCodec oggvorbis_encoder;
5c5dea3f 1906extern AVCodec oggtheora_encoder;
29d48296 1907extern AVCodec faac_encoder;
1ddadfa9 1908extern AVCodec xvid_encoder;
de6d9b64 1909extern AVCodec mpeg1video_encoder;
029911d1 1910extern AVCodec mpeg2video_encoder;
1c3990db 1911extern AVCodec h261_encoder;
de6d9b64
FB
1912extern AVCodec h263_encoder;
1913extern AVCodec h263p_encoder;
d4f5d74a 1914extern AVCodec flv_encoder;
de6d9b64 1915extern AVCodec rv10_encoder;
68b94c35 1916extern AVCodec rv20_encoder;
6faa4645 1917extern AVCodec dvvideo_encoder;
de6d9b64 1918extern AVCodec mjpeg_encoder;
b1e6b355 1919extern AVCodec ljpeg_encoder;
4eff7cf4 1920extern AVCodec png_encoder;
5b6d5596
MN
1921extern AVCodec ppm_encoder;
1922extern AVCodec pgm_encoder;
1923extern AVCodec pgmyuv_encoder;
1924extern AVCodec pbm_encoder;
1925extern AVCodec pam_encoder;
bf89e6b1 1926extern AVCodec mpeg4_encoder;
84afee34
MN
1927extern AVCodec msmpeg4v1_encoder;
1928extern AVCodec msmpeg4v2_encoder;
1929extern AVCodec msmpeg4v3_encoder;
0151a6f5
MN
1930extern AVCodec wmv1_encoder;
1931extern AVCodec wmv2_encoder;
11f18faf 1932extern AVCodec huffyuv_encoder;
f37b9768 1933extern AVCodec ffvhuff_encoder;
0da71265 1934extern AVCodec h264_encoder;
3d2e8cce 1935extern AVCodec asv1_encoder;
9b56edf5 1936extern AVCodec asv2_encoder;
be3564ed 1937extern AVCodec vcr1_encoder;
5e20f836 1938extern AVCodec ffv1_encoder;
791e7b83 1939extern AVCodec snow_encoder;
c3bf0288 1940extern AVCodec mdec_encoder;
a273bbfb 1941extern AVCodec zlib_encoder;
54f5fd22
AB
1942extern AVCodec sonic_encoder;
1943extern AVCodec sonic_ls_encoder;
3b64893d 1944extern AVCodec svq1_encoder;
6662ec29 1945extern AVCodec x264_encoder;
de6d9b64
FB
1946
1947extern AVCodec h263_decoder;
c6148de2 1948extern AVCodec h261_decoder;
bf89e6b1 1949extern AVCodec mpeg4_decoder;
84afee34
MN
1950extern AVCodec msmpeg4v1_decoder;
1951extern AVCodec msmpeg4v2_decoder;
1952extern AVCodec msmpeg4v3_decoder;
e1a9dbff 1953extern AVCodec wmv1_decoder;
0151a6f5 1954extern AVCodec wmv2_decoder;
21aa398f
AB
1955extern AVCodec vc9_decoder;
1956extern AVCodec wmv3_decoder;
922bc38d
MN
1957extern AVCodec mpeg1video_decoder;
1958extern AVCodec mpeg2video_decoder;
c512b303 1959extern AVCodec mpegvideo_decoder;
fb364ada 1960extern AVCodec mpeg_xvmc_decoder;
de6d9b64 1961extern AVCodec h263i_decoder;
d4f5d74a 1962extern AVCodec flv_decoder;
de6d9b64 1963extern AVCodec rv10_decoder;
68b94c35 1964extern AVCodec rv20_decoder;
3f05305d
MN
1965extern AVCodec rv30_decoder;
1966extern AVCodec rv40_decoder;
be8ffec9 1967extern AVCodec svq1_decoder;
8b82a956 1968extern AVCodec svq3_decoder;
020fcc94 1969extern AVCodec dvvideo_decoder;
bc8d1857
FB
1970extern AVCodec wmav1_decoder;
1971extern AVCodec wmav2_decoder;
4e66ab3b 1972extern AVCodec mjpeg_decoder;
b135d9fb 1973extern AVCodec mjpegb_decoder;
5e83dec4 1974extern AVCodec sp5x_decoder;
4eff7cf4 1975extern AVCodec png_decoder;
4b1f4f23 1976extern AVCodec mp2_decoder;
a96b68b7 1977extern AVCodec mp3_decoder;
1ede228a 1978extern AVCodec mp3adu_decoder;
d2a7718d 1979extern AVCodec mp3on4_decoder;
3f95e843
FR
1980extern AVCodec mace3_decoder;
1981extern AVCodec mace6_decoder;
11f18faf 1982extern AVCodec huffyuv_decoder;
f37b9768 1983extern AVCodec ffvhuff_decoder;
3aca208a 1984extern AVCodec oggvorbis_decoder;
5c5dea3f 1985extern AVCodec oggtheora_decoder;
f70f7c6d 1986extern AVCodec cyuv_decoder;
0da71265 1987extern AVCodec h264_decoder;
deabd4fd 1988extern AVCodec indeo3_decoder;
d86053a4 1989extern AVCodec vp3_decoder;
f44ee2c3 1990extern AVCodec theora_decoder;
891f64b3 1991extern AVCodec amr_nb_decoder;
bc634f6f 1992extern AVCodec amr_nb_encoder;
d663a1fd
MN
1993extern AVCodec amr_wb_encoder;
1994extern AVCodec amr_wb_decoder;
280bd7b7
ZK
1995extern AVCodec aac_decoder;
1996extern AVCodec mpeg4aac_decoder;
3d2e8cce 1997extern AVCodec asv1_decoder;
9b56edf5 1998extern AVCodec asv2_decoder;
be3564ed 1999extern AVCodec vcr1_decoder;
3aff069b 2000extern AVCodec cljr_decoder;
5e20f836 2001extern AVCodec ffv1_decoder;
791e7b83 2002extern AVCodec snow_decoder;
8809cfee 2003extern AVCodec fourxm_decoder;
c3bf0288 2004extern AVCodec mdec_decoder;
3ef8be2b
MM
2005extern AVCodec roq_decoder;
2006extern AVCodec interplay_video_decoder;
9937e686 2007extern AVCodec xan_wc3_decoder;
2fdf638b
MM
2008extern AVCodec rpza_decoder;
2009extern AVCodec cinepak_decoder;
2010extern AVCodec msrle_decoder;
2011extern AVCodec msvideo1_decoder;
6955a882 2012extern AVCodec vqa_decoder;
4120a53a 2013extern AVCodec idcin_decoder;
1dc1ed99 2014extern AVCodec eightbps_decoder;
11e29a41 2015extern AVCodec smc_decoder;
42cad81a 2016extern AVCodec flic_decoder;
fafa0b75
MM
2017extern AVCodec vmdvideo_decoder;
2018extern AVCodec vmdaudio_decoder;
9a4117d5 2019extern AVCodec truemotion1_decoder;
a273bbfb
RT
2020extern AVCodec mszh_decoder;
2021extern AVCodec zlib_decoder;
b8414bbd
NK
2022extern AVCodec ra_144_decoder;
2023extern AVCodec ra_288_decoder;
3ef8be2b
MM
2024extern AVCodec roq_dpcm_decoder;
2025extern AVCodec interplay_dpcm_decoder;
9937e686 2026extern AVCodec xan_dpcm_decoder;
d08d7142 2027extern AVCodec sol_dpcm_decoder;
54f5fd22 2028extern AVCodec sonic_decoder;
070ed1bc 2029extern AVCodec qtrle_decoder;
ac2570a8 2030extern AVCodec flac_decoder;
9d53d58e 2031extern AVCodec tscc_decoder;
d0a0bbd2 2032extern AVCodec ulti_decoder;
d08d7142 2033extern AVCodec qdraw_decoder;
ab711b3c 2034extern AVCodec xl_decoder;
acfd8f0f 2035extern AVCodec qpeg_decoder;
85ad5695 2036extern AVCodec shorten_decoder;
9c7fb608 2037extern AVCodec loco_decoder;
a8a15e9d 2038extern AVCodec wnv1_decoder;
589f8220 2039extern AVCodec aasc_decoder;
6d6d7970 2040extern AVCodec alac_decoder;
034eeaa1 2041extern AVCodec ws_snd1_decoder;
856dbbff 2042extern AVCodec indeo2_decoder;
0bde73d9 2043extern AVCodec vorbis_decoder;
b81f8949 2044extern AVCodec fraps_decoder;
bb4c2140
MN
2045extern AVCodec libgsm_encoder;
2046extern AVCodec libgsm_decoder;
de6d9b64 2047
a96b68b7
FB
2048/* pcm codecs */
2049#define PCM_CODEC(id, name) \
2050extern AVCodec name ## _decoder; \
f11d3f23 2051extern AVCodec name ## _encoder
a96b68b7
FB
2052
2053PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2054PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2055PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2056PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2057PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2058PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2059PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2060PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2061
0147f198
FR
2062/* adpcm codecs */
2063
2064PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2065PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
9937e686
MM
2066PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2067PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2fdf638b 2068PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
7d8379f2 2069PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
0147f198 2070PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
4b465299 2071PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
fc384777
MM
2072PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2073PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
7d8379f2 2074PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
e5966052 2075PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
b3bfb299 2076PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
659c3692 2077PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
0147f198 2078
a96b68b7
FB
2079#undef PCM_CODEC
2080
2081/* dummy raw video codec */
63167088
RS
2082extern AVCodec rawvideo_encoder;
2083extern AVCodec rawvideo_decoder;
de6d9b64
FB
2084
2085/* the following codecs use external GPL libs */
de6d9b64 2086extern AVCodec ac3_decoder;
23c99253 2087extern AVCodec dts_decoder;
de6d9b64 2088
240c1657
FB
2089/* subtitles */
2090extern AVCodec dvdsub_decoder;
2091extern AVCodec dvbsub_encoder;
2092
de6d9b64
FB
2093/* resample.c */
2094
2095struct ReSampleContext;
aaaf1635 2096struct AVResampleContext;
de6d9b64
FB
2097
2098typedef struct ReSampleContext ReSampleContext;
2099
2100ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2101 int output_rate, int input_rate);
2102int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2103void audio_resample_close(ReSampleContext *s);
2104
6e225de2 2105struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
aaaf1635 2106int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2d48eddd 2107void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
d88443ae 2108void av_resample_close(struct AVResampleContext *c);
aaaf1635 2109
de6d9b64
FB
2110/* YUV420 format is assumed ! */
2111
2112struct ImgReSampleContext;
2113
2114typedef struct ImgReSampleContext ImgReSampleContext;
2115
2116ImgReSampleContext *img_resample_init(int output_width, int output_height,
2117 int input_width, int input_height);
ab6d194a
MN
2118
2119ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2120 int iwidth, int iheight,
2121 int topBand, int bottomBand,
1ff93ffc
TK
2122 int leftBand, int rightBand,
2123 int padtop, int padbottom,
2124 int padleft, int padright);
2125
ab6d194a 2126
de6d9b64 2127void img_resample(ImgReSampleContext *s,
da64ecc3 2128 AVPicture *output, const AVPicture *input);
de6d9b64
FB
2129
2130void img_resample_close(ImgReSampleContext *s);
2131
75917b88
DH
2132/**
2133 * Allocate memory for a picture. Call avpicture_free to free it.
2134 *
2135 * @param picture the picture to be filled in.
2136 * @param pix_fmt the format of the picture.
2137 * @param width the width of the picture.
2138 * @param height the height of the picture.
2139 * @return 0 if successful, -1 if not.
2140 */
2141int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2142
2143/* Free a picture previously allocated by avpicture_alloc. */
2144void avpicture_free(AVPicture *picture);
2145
0c1a9eda 2146int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2d1a4094 2147 int pix_fmt, int width, int height);
da64ecc3 2148int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
63167088 2149 unsigned char *dest, int dest_size);
219b06c6 2150int avpicture_get_size(int pix_fmt, int width, int height);
dab64ebc
FB
2151void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2152const char *avcodec_get_pix_fmt_name(int pix_fmt);
21adafec 2153void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
63167088 2154enum PixelFormat avcodec_get_pix_fmt(const char* name);
d07730dd 2155unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
219b06c6 2156
fab21997
FB
2157#define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2158#define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2159#define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2160#define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2161#define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2162#define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2163
2164int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2165 int has_alpha);
2166int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2167 int has_alpha, int *loss_ptr);
2168
0469baf1
FB
2169#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2170#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
da64ecc3
DH
2171int img_get_alpha_info(const AVPicture *src,
2172 int pix_fmt, int width, int height);
0469baf1 2173
219b06c6
FB
2174/* convert among pixel formats */
2175int img_convert(AVPicture *dst, int dst_pix_fmt,
da64ecc3 2176 const AVPicture *src, int pix_fmt,
219b06c6
FB
2177 int width, int height);
2178
2179/* deinterlace a picture */
da64ecc3 2180int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
de6d9b64
FB
2181 int pix_fmt, int width, int height);
2182
2183/* external high level API */
2184
2185extern AVCodec *first_avcodec;
2186
156e5023 2187/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 2188unsigned avcodec_version(void);
8bceb6af 2189/* returns LIBAVCODEC_BUILD constant */
51a49663 2190unsigned avcodec_build(void);
de6d9b64
FB
2191void avcodec_init(void);
2192
2193void register_avcodec(AVCodec *format);
2194AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 2195AVCodec *avcodec_find_encoder_by_name(const char *name);
de6d9b64
FB
2196AVCodec *avcodec_find_decoder(enum CodecID id);
2197AVCodec *avcodec_find_decoder_by_name(const char *name);
2198void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2199
1e491e29 2200void avcodec_get_context_defaults(AVCodecContext *s);
7ffbb60e 2201AVCodecContext *avcodec_alloc_context(void);
7906085f 2202void avcodec_get_frame_defaults(AVFrame *pic);
492cd3a9 2203AVFrame *avcodec_alloc_frame(void);
1e491e29 2204
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MN
2205int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2206void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
3a569751
MN
2207int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2208void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
0ecca7a4 2209int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
3a569751 2210enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
1e491e29 2211
5a815088
MN
2212int avcodec_thread_init(AVCodecContext *s, int thread_count);
2213void avcodec_thread_free(AVCodecContext *s);
2214int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
3a569751 2215int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
9c3d33d6
MN
2216//FIXME func typedef
2217
7a06ff14
MN
2218/**
2219 * opens / inits the AVCodecContext.
2220 * not thread save!
2221 */
de6d9b64 2222int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
7a06ff14 2223
0c1a9eda 2224int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 2225 int *frame_size_ptr,
0c1a9eda 2226 uint8_t *buf, int buf_size);
492cd3a9 2227int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 2228 int *got_picture_ptr,
0c1a9eda 2229 uint8_t *buf, int buf_size);
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FB
2230int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2231 int *got_sub_ptr,
2232 const uint8_t *buf, int buf_size);
0c1a9eda 2233int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
917e06c8 2234 int *data_size_ptr,
0c1a9eda
ZK
2235 uint8_t *buf, int buf_size);
2236int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64 2237 const short *samples);
0c1a9eda 2238int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 2239 const AVFrame *pict);
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FB
2240int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2241 const AVSubtitle *sub);
de6d9b64
FB
2242
2243int avcodec_close(AVCodecContext *avctx);
2244
2245void avcodec_register_all(void);
a96b68b7 2246
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MN
2247void avcodec_flush_buffers(AVCodecContext *avctx);
2248
88730be6
MR
2249void avcodec_default_free_buffers(AVCodecContext *s);
2250
14bea432 2251/* misc usefull functions */
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MN
2252
2253/**
2254 * returns a single letter to describe the picture type
2255 */
2256char av_get_pict_type_char(int pict_type);
2257
14bea432
MN
2258/**
2259 * reduce a fraction.
2260 * this is usefull for framerate calculations
2261 * @param max the maximum allowed for dst_nom & dst_den
2262 * @return 1 if exact, 0 otherwise
2263 */
2264int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2265
2266/**
1f018225 2267 * rescale a 64bit integer with rounding to nearest.
bb628dae 2268 * a simple a*b/c isn't possible as it can overflow
14bea432 2269 */
4c263142 2270int64_t av_rescale(int64_t a, int64_t b, int64_t c);
628d601b 2271
1f018225
MN
2272/**
2273 * rescale a 64bit integer with specified rounding.
bb628dae 2274 * a simple a*b/c isn't possible as it can overflow
1f018225
MN
2275 */
2276int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
628d601b 2277
c0df9d75
MN
2278/**
2279 * rescale a 64bit integer by 2 rational numbers.
2280 */
2281int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq);
2282
8424cf50
FB
2283/* frame parsing */
2284typedef struct AVCodecParserContext {
2285 void *priv_data;
2286 struct AVCodecParser *parser;
2287 int64_t frame_offset; /* offset of the current frame */
2288 int64_t cur_offset; /* current offset
2289 (incremented by each av_parser_parse()) */
2290 int64_t last_frame_offset; /* offset of the last frame */
2291 /* video info */
2292 int pict_type; /* XXX: put it back in AVCodecContext */
2293 int repeat_pict; /* XXX: put it back in AVCodecContext */
b84f2a35
FB
2294 int64_t pts; /* pts of the current frame */
2295 int64_t dts; /* dts of the current frame */
2296
2297 /* private data */
2298 int64_t last_pts;
2299 int64_t last_dts;
a62aecce 2300 int fetch_timestamp;
b84f2a35
FB
2301
2302#define AV_PARSER_PTS_NB 4
2303 int cur_frame_start_index;
2304 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2305 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2306 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
8424cf50
FB
2307} AVCodecParserContext;
2308
2309typedef struct AVCodecParser {
99f06236 2310 int codec_ids[5]; /* several codec IDs are permitted */
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FB
2311 int priv_data_size;
2312 int (*parser_init)(AVCodecParserContext *s);
2313 int (*parser_parse)(AVCodecParserContext *s,
2314 AVCodecContext *avctx,
2315 uint8_t **poutbuf, int *poutbuf_size,
2316 const uint8_t *buf, int buf_size);
2317 void (*parser_close)(AVCodecParserContext *s);
2318 struct AVCodecParser *next;
2319} AVCodecParser;
2320
2321extern AVCodecParser *av_first_parser;
2322
2323void av_register_codec_parser(AVCodecParser *parser);
2324AVCodecParserContext *av_parser_init(int codec_id);
2325int av_parser_parse(AVCodecParserContext *s,
2326 AVCodecContext *avctx,
2327 uint8_t **poutbuf, int *poutbuf_size,
b84f2a35
FB
2328 const uint8_t *buf, int buf_size,
2329 int64_t pts, int64_t dts);
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FB
2330void av_parser_close(AVCodecParserContext *s);
2331
2332extern AVCodecParser mpegvideo_parser;
2333extern AVCodecParser mpeg4video_parser;
c6148de2 2334extern AVCodecParser h261_parser;
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FB
2335extern AVCodecParser h263_parser;
2336extern AVCodecParser h264_parser;
8e6325b9 2337extern AVCodecParser mjpeg_parser;
99f06236 2338extern AVCodecParser pnm_parser;
8424cf50
FB
2339extern AVCodecParser mpegaudio_parser;
2340extern AVCodecParser ac3_parser;
240c1657 2341extern AVCodecParser dvdsub_parser;
8424cf50 2342
544eb99c 2343/* memory */
e4eadb4b 2344void *av_malloc(unsigned int size);
18f77016 2345void *av_mallocz(unsigned int size);
8e1e6f31 2346void *av_realloc(void *ptr, unsigned int size);
544eb99c 2347void av_free(void *ptr);
8e1e6f31 2348char *av_strdup(const char *s);
81c5f887 2349void av_freep(void *ptr);
97d96aaa 2350void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
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ZK
2351/* for static data only */
2352/* call av_free_static to release all staticaly allocated tables */
628d601b 2353void av_free_static(void);
8d1f2ba5 2354void *av_mallocz_static(unsigned int size);
073c2593 2355void *av_realloc_static(void *ptr, unsigned int size);
544eb99c 2356
fc384777
MM
2357/* add by bero : in adx.c */
2358int is_adx(const unsigned char *buf,size_t bufsize);
2359
e1c2a5a0
RT
2360void img_copy(AVPicture *dst, const AVPicture *src,
2361 int pix_fmt, int width, int height);
2362
9b879566
MB
2363/* av_log API */
2364
2365#include <stdarg.h>
2366
d8019eb5 2367#define AV_LOG_QUIET -1
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MB
2368#define AV_LOG_ERROR 0
2369#define AV_LOG_INFO 1
2370#define AV_LOG_DEBUG 2
2371
f4bd8cf0 2372#ifdef __GNUC__
bc874dae 2373extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
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MN
2374#else
2375extern void av_log(void*, int level, const char *fmt, ...);
2376#endif
2377
bc874dae 2378extern void av_vlog(void*, int level, const char *fmt, va_list);
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2379extern int av_log_get_level(void);
2380extern void av_log_set_level(int);
bc874dae 2381extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
9b879566 2382
3a278992 2383/* endian macros */
e96682e6 2384#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
3a278992
MM
2385#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2386#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2387 (((uint8_t*)(x))[1] << 16) | \
2388 (((uint8_t*)(x))[2] << 8) | \
2389 ((uint8_t*)(x))[3])
2390#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2391#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2392 (((uint8_t*)(x))[2] << 16) | \
2393 (((uint8_t*)(x))[1] << 8) | \
2394 ((uint8_t*)(x))[0])
e96682e6 2395#endif
3a278992 2396
ad2b531d
MR
2397extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2398
02d697aa
ZK
2399#ifdef __cplusplus
2400}
2401#endif
2402
a96b68b7 2403#endif /* AVCODEC_H */