more accurate dequant of near zero coefficients
[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"
1ede228a 20#define LIBAVCODEC_BUILD 4738
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)
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30#define AV_TIME_BASE 1000000
31
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32enum CodecID {
33 CODEC_ID_NONE,
34 CODEC_ID_MPEG1VIDEO,
dcedf586 35 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
fb364ada 36 CODEC_ID_MPEG2VIDEO_XVMC,
c6148de2 37 CODEC_ID_H261,
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38 CODEC_ID_H263,
39 CODEC_ID_RV10,
68b94c35 40 CODEC_ID_RV20,
de6d9b64 41 CODEC_ID_MJPEG,
b135d9fb 42 CODEC_ID_MJPEGB,
b1e6b355 43 CODEC_ID_LJPEG,
5e83dec4 44 CODEC_ID_SP5X,
bf89e6b1 45 CODEC_ID_MPEG4,
de6d9b64 46 CODEC_ID_RAWVIDEO,
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47 CODEC_ID_MSMPEG4V1,
48 CODEC_ID_MSMPEG4V2,
49 CODEC_ID_MSMPEG4V3,
e1a9dbff 50 CODEC_ID_WMV1,
b50eef3a 51 CODEC_ID_WMV2,
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52 CODEC_ID_H263P,
53 CODEC_ID_H263I,
d4f5d74a 54 CODEC_ID_FLV1,
be8ffec9 55 CODEC_ID_SVQ1,
8b82a956 56 CODEC_ID_SVQ3,
020fcc94 57 CODEC_ID_DVVIDEO,
11f18faf 58 CODEC_ID_HUFFYUV,
f70f7c6d 59 CODEC_ID_CYUV,
0da71265 60 CODEC_ID_H264,
deabd4fd 61 CODEC_ID_INDEO3,
d86053a4 62 CODEC_ID_VP3,
f44ee2c3 63 CODEC_ID_THEORA,
3d2e8cce 64 CODEC_ID_ASV1,
9b56edf5 65 CODEC_ID_ASV2,
5e20f836 66 CODEC_ID_FFV1,
e2a7bb28 67 CODEC_ID_4XM,
be3564ed 68 CODEC_ID_VCR1,
3aff069b 69 CODEC_ID_CLJR,
c3bf0288 70 CODEC_ID_MDEC,
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71 CODEC_ID_ROQ,
72 CODEC_ID_INTERPLAY_VIDEO,
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73 CODEC_ID_XAN_WC3,
74 CODEC_ID_XAN_WC4,
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75 CODEC_ID_RPZA,
76 CODEC_ID_CINEPAK,
77 CODEC_ID_WS_VQA,
78 CODEC_ID_MSRLE,
79 CODEC_ID_MSVIDEO1,
4120a53a 80 CODEC_ID_IDCIN,
1dc1ed99 81 CODEC_ID_8BPS,
11e29a41 82 CODEC_ID_SMC,
42cad81a 83 CODEC_ID_FLIC,
9a4117d5 84 CODEC_ID_TRUEMOTION1,
fafa0b75 85 CODEC_ID_VMDVIDEO,
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86 CODEC_ID_MSZH,
87 CODEC_ID_ZLIB,
070ed1bc 88 CODEC_ID_QTRLE,
791e7b83 89 CODEC_ID_SNOW,
9d53d58e 90 CODEC_ID_TSCC,
d0a0bbd2 91 CODEC_ID_ULTI,
d08d7142 92 CODEC_ID_QDRAW,
ab711b3c 93 CODEC_ID_VIXL,
acfd8f0f 94 CODEC_ID_QPEG,
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95 CODEC_ID_XVID,
96 CODEC_ID_PNG,
97 CODEC_ID_PPM,
98 CODEC_ID_PBM,
99 CODEC_ID_PGM,
100 CODEC_ID_PGMYUV,
101 CODEC_ID_PAM,
f37b9768 102 CODEC_ID_FFVHUFF,
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103 CODEC_ID_RV30,
104 CODEC_ID_RV40,
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105 CODEC_ID_VC9,
106 CODEC_ID_WMV3,
3f05305d 107
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108
109 /* various pcm "codecs" */
17179d2d 110 CODEC_ID_PCM_S16LE= 0x10000,
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111 CODEC_ID_PCM_S16BE,
112 CODEC_ID_PCM_U16LE,
113 CODEC_ID_PCM_U16BE,
114 CODEC_ID_PCM_S8,
115 CODEC_ID_PCM_U8,
116 CODEC_ID_PCM_MULAW,
117 CODEC_ID_PCM_ALAW,
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118
119 /* various adpcm codecs */
17179d2d 120 CODEC_ID_ADPCM_IMA_QT= 0x11000,
0147f198 121 CODEC_ID_ADPCM_IMA_WAV,
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122 CODEC_ID_ADPCM_IMA_DK3,
123 CODEC_ID_ADPCM_IMA_DK4,
2fdf638b 124 CODEC_ID_ADPCM_IMA_WS,
7d8379f2 125 CODEC_ID_ADPCM_IMA_SMJPEG,
0147f198 126 CODEC_ID_ADPCM_MS,
e2a7bb28 127 CODEC_ID_ADPCM_4XM,
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128 CODEC_ID_ADPCM_XA,
129 CODEC_ID_ADPCM_ADX,
7d8379f2 130 CODEC_ID_ADPCM_EA,
e5966052 131 CODEC_ID_ADPCM_G726,
b3bfb299 132 CODEC_ID_ADPCM_CT,
891f64b3 133
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134 /* AMR */
135 CODEC_ID_AMR_NB= 0x12000,
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136 CODEC_ID_AMR_WB,
137
b8414bbd 138 /* RealAudio codecs*/
17179d2d 139 CODEC_ID_RA_144= 0x13000,
b8414bbd 140 CODEC_ID_RA_288,
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141
142 /* various DPCM codecs */
17179d2d 143 CODEC_ID_ROQ_DPCM= 0x14000,
3ef8be2b 144 CODEC_ID_INTERPLAY_DPCM,
9937e686 145 CODEC_ID_XAN_DPCM,
d08d7142 146 CODEC_ID_SOL_DPCM,
985180a1 147
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148 CODEC_ID_MP2= 0x15000,
149 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
150 CODEC_ID_AAC,
151 CODEC_ID_MPEG4AAC,
152 CODEC_ID_AC3,
153 CODEC_ID_DTS,
154 CODEC_ID_VORBIS,
155 CODEC_ID_DVAUDIO,
156 CODEC_ID_WMAV1,
157 CODEC_ID_WMAV2,
158 CODEC_ID_MACE3,
159 CODEC_ID_MACE6,
160 CODEC_ID_VMDAUDIO,
161 CODEC_ID_SONIC,
162 CODEC_ID_SONIC_LS,
ac2570a8 163 CODEC_ID_FLAC,
1ede228a 164 CODEC_ID_MP3ADU,
ac2570a8 165
17179d2d 166 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
985180a1 167 stream (only used by libavformat) */
de6d9b64 168};
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169
170/* CODEC_ID_MP3LAME is absolete */
171#define CODEC_ID_MP3LAME CODEC_ID_MP3
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172
173enum CodecType {
4a663d80 174 CODEC_TYPE_UNKNOWN = -1,
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175 CODEC_TYPE_VIDEO,
176 CODEC_TYPE_AUDIO,
985180a1 177 CODEC_TYPE_DATA,
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178};
179
64863965 180/**
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181 * Pixel format. Notes:
182 *
183 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
184 * color is put together as:
185 * (A << 24) | (R << 16) | (G << 8) | B
186 * This is stored as BGRA on little endian CPU architectures and ARGB on
187 * big endian CPUs.
188 *
189 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
190 * image data is stored in AVFrame.data[0]. The palette is transported in
191 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
192 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
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193 * also endian-specific). Note also that the individual RGB palette
194 * components stored in AVFrame.data[1] should be in the range 0..255.
195 * This is important as many custom PAL8 video codecs that were designed
196 * to run on the IBM VGA graphics adapter use 6-bit palette components.
64863965 197 */
de6d9b64 198enum PixelFormat {
cd394651 199 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
ebb177dd 200 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
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201 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
202 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
203 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
204 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
0f371e3e 205 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
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206 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
207 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
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208 PIX_FMT_RGB565, ///< always stored in cpu endianness
209 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
dab64ebc 210 PIX_FMT_GRAY8,
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211 PIX_FMT_MONOWHITE, ///< 0 is white
212 PIX_FMT_MONOBLACK, ///< 0 is black
213 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
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214 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
215 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
216 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
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217 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
218 PIX_FMT_XVMC_MPEG2_IDCT,
ebb177dd 219 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
f02be79d 220 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
dab64ebc 221 PIX_FMT_NB,
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222};
223
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224/* currently unused, may be used if 24/32 bits samples ever supported */
225enum SampleFormat {
64863965 226 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
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227};
228
de6d9b64 229/* in bytes */
bc8d1857 230#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 231
d7425f59 232/**
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233 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
234 * this is mainly needed because some optimized bitstream readers read
235 * 32 or 64 bit at once and could read over the end<br>
236 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
237 * MPEG bitstreams could cause overread and segfault
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238 */
239#define FF_INPUT_BUFFER_PADDING_SIZE 8
240
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241/**
242 * minimum encoding buffer size.
243 * used to avoid some checks during header writing
244 */
245#define FF_MIN_BUFFER_SIZE 16384
246
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247/* motion estimation type, EPZS by default */
248enum Motion_Est_ID {
101bea5f 249 ME_ZERO = 1,
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250 ME_FULL,
251 ME_LOG,
252 ME_PHODS,
253 ME_EPZS,
254 ME_X1
255};
256
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257enum AVRounding {
258 AV_ROUND_ZERO = 0, ///< round toward zero
259 AV_ROUND_INF = 1, ///< round away from zero
260 AV_ROUND_DOWN = 2, ///< round toward -infinity
261 AV_ROUND_UP = 3, ///< round toward +infinity
262 AV_ROUND_NEAR_INF = 5, ///< round to nearest and halfway cases away from zero
263};
264
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265typedef struct RcOverride{
266 int start_frame;
267 int end_frame;
268 int qscale; // if this is 0 then quality_factor will be used instead
269 float quality_factor;
270} RcOverride;
271
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272/* only for ME compatiblity with old apps */
273extern int motion_estimation_method;
274
4e00e76b 275#define FF_MAX_B_FRAMES 8
9dbcbd92 276
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277/* encoding support
278 these flags can be passed in AVCodecContext.flags before initing
279 Note: note not everything is supported yet
280*/
de6d9b64 281
64863965 282#define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
dba019da 283#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
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284#define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
285#define CODEC_FLAG_GMC 0x0020 ///< use GMC
ca7d05d5 286#define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
64863965 287#define CODEC_FLAG_PART 0x0080 ///< use data partitioning
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288/* parent program gurantees that the input for b-frame containing streams is not written to
289 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 290#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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291#define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
292#define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
293#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
294#define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
295#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
296#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
297#define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
d7425f59 298 of only at frame boundaries */
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299#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
300#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
3bb07d61 301#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
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302#define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
303#define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
304#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
305#define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
21e59552 306/* Fx : Flag for h263+ extra options */
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307#define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
308#define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
64863965 309#define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
f2f6134b 310#define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
1f26c6f3 311#define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
dba019da 312#define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
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313#define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
314#define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
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315#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
316#define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
baaf3f46 317#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
303e50e6 318#define CODEC_FLAG_CLOSED_GOP 0x80000000
6fc5b059 319#define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
03581772 320#define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
6fc5b059 321
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322/* Unsupported options :
323 * Syntax Arithmetic coding (SAC)
21e59552 324 * Reference Picture Selection
ba58dabc 325 * Independant Segment Decoding */
21e59552 326/* /Fx */
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327/* codec capabilities */
328
64863965 329#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
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330/**
331 * Codec uses get_buffer() for allocating buffers.
332 * direct rendering method 1
333 */
334#define CODEC_CAP_DR1 0x0002
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335/* if 'parse_only' field is true, then avcodec_parse_frame() can be
336 used */
337#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 338#define CODEC_CAP_TRUNCATED 0x0008
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339/* codec can export data for HW decoding (XvMC) */
340#define CODEC_CAP_HWACCEL 0x0010
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341/**
342 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
343 * if this is not set, the codec is guranteed to never be feeded with NULL data
344 */
6f824977 345#define CODEC_CAP_DELAY 0x0020
bf89e6b1 346
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347//the following defines might change, so dont expect compatibility if u use them
348#define MB_TYPE_INTRA4x4 0x0001
349#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
350#define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
351#define MB_TYPE_16x16 0x0008
352#define MB_TYPE_16x8 0x0010
353#define MB_TYPE_8x16 0x0020
354#define MB_TYPE_8x8 0x0040
355#define MB_TYPE_INTERLACED 0x0080
356#define MB_TYPE_DIRECT2 0x0100 //FIXME
357#define MB_TYPE_ACPRED 0x0200
358#define MB_TYPE_GMC 0x0400
359#define MB_TYPE_SKIP 0x0800
360#define MB_TYPE_P0L0 0x1000
361#define MB_TYPE_P1L0 0x2000
362#define MB_TYPE_P0L1 0x4000
363#define MB_TYPE_P1L1 0x8000
364#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
365#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
366#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
367#define MB_TYPE_QUANT 0x00010000
368#define MB_TYPE_CBP 0x00020000
369//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
370
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371/**
372 * Pan Scan area.
373 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
374 */
375typedef struct AVPanScan{
376 /**
377 * id.
378 * - encoding: set by user.
379 * - decoding: set by lavc
380 */
381 int id;
382
383 /**
384 * width and height in 1/16 pel
385 * - encoding: set by user.
386 * - decoding: set by lavc
387 */
388 int width;
389 int height;
390
391 /**
392 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
393 * - encoding: set by user.
394 * - decoding: set by lavc
395 */
396 int16_t position[3][2];
397}AVPanScan;
398
492cd3a9 399#define FF_COMMON_FRAME \
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400 /**\
401 * pointer to the picture planes.\
402 * this might be different from the first allocated byte\
403 * - encoding: \
404 * - decoding: \
405 */\
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406 uint8_t *data[4];\
407 int linesize[4];\
408 /**\
32db2b1d 409 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
1e491e29 410 * this isnt used by lavc unless the default get/release_buffer() is used\
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411 * - encoding: \
412 * - decoding: \
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413 */\
414 uint8_t *base[4];\
415 /**\
416 * 1 -> keyframe, 0-> not\
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417 * - encoding: set by lavc\
418 * - decoding: set by lavc\
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419 */\
420 int key_frame;\
421\
422 /**\
0da71265 423 * picture type of the frame, see ?_TYPE below.\
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424 * - encoding: set by lavc for coded_picture (and set by user for input)\
425 * - decoding: set by lavc\
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426 */\
427 int pict_type;\
428\
429 /**\
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430 * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
431 * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
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432 * - encoding: MUST be set by user\
433 * - decoding: set by lavc\
1e491e29 434 */\
be6784dc 435 int64_t pts;\
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436\
437 /**\
438 * picture number in bitstream order.\
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439 * - encoding: set by\
440 * - decoding: set by lavc\
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441 */\
442 int coded_picture_number;\
443 /**\
1e491e29 444 * picture number in display order.\
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445 * - encoding: set by\
446 * - decoding: set by lavc\
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447 */\
448 int display_picture_number;\
449\
450 /**\
158c7f05 451 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
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452 * - encoding: set by lavc for coded_picture (and set by user for input)\
453 * - decoding: set by lavc\
1e491e29 454 */\
158c7f05 455 int quality; \
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456\
457 /**\
458 * buffer age (1->was last buffer and dint change, 2->..., ...).\
158c7f05 459 * set to INT_MAX if the buffer has not been used yet \
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460 * - encoding: unused\
461 * - decoding: MUST be set by get_buffer()\
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462 */\
463 int age;\
464\
465 /**\
466 * is this picture used as reference\
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467 * - encoding: unused\
468 * - decoding: set by lavc (before get_buffer() call))\
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469 */\
470 int reference;\
471\
472 /**\
473 * QP table\
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474 * - encoding: unused\
475 * - decoding: set by lavc\
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476 */\
477 int8_t *qscale_table;\
478 /**\
479 * QP store stride\
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480 * - encoding: unused\
481 * - decoding: set by lavc\
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482 */\
483 int qstride;\
484\
485 /**\
486 * mbskip_table[mb]>=1 if MB didnt change\
487 * stride= mb_width = (width+15)>>4\
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488 * - encoding: unused\
489 * - decoding: set by lavc\
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490 */\
491 uint8_t *mbskip_table;\
492\
493 /**\
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494 * Motion vector table.\
495 * @code\
496 * example:\
497 * int mv_sample_log2= 4 - motion_subsample_log2;\
498 * int mb_width= (width+15)>>4;\
499 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
500 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
501 * @endcode\
a4d36c11 502 * - encoding: set by user\
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503 * - decoding: set by lavc\
504 */\
505 int16_t (*motion_val[2])[2];\
506\
507 /**\
508 * Macroblock type table\
509 * mb_type_base + mb_width + 2\
a4d36c11 510 * - encoding: set by user\
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511 * - decoding: set by lavc\
512 */\
513 uint32_t *mb_type;\
514\
515 /**\
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516 * log2 of the size of the block which a single vector in motion_val represents: \
517 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
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518 * - encoding: unused\
519 * - decoding: set by lavc\
520 */\
521 uint8_t motion_subsample_log2;\
522\
523 /**\
1e491e29 524 * for some private data of the user\
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525 * - encoding: unused\
526 * - decoding: set by user\
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527 */\
528 void *opaque;\
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529\
530 /**\
531 * error\
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532 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
533 * - decoding: unused\
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534 */\
535 uint64_t error[4];\
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536\
537 /**\
538 * type of the buffer (to keep track of who has to dealloc data[*])\
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539 * - encoding: set by the one who allocs it\
540 * - decoding: set by the one who allocs it\
3db320ea 541 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
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542 */\
543 int type;\
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544 \
545 /**\
546 * when decoding, this signal how much the picture must be delayed.\
547 * extra_delay = repeat_pict / (2*fps)\
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548 * - encoding: unused\
549 * - decoding: set by lavc\
2ec23b6d 550 */\
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551 int repeat_pict;\
552 \
553 /**\
554 * \
555 */\
556 int qscale_type;\
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557 \
558 /**\
559 * The content of the picture is interlaced.\
560 * - encoding: set by user\
561 * - decoding: set by lavc (default 0)\
562 */\
563 int interlaced_frame;\
564 \
565 /**\
9dad924e 566 * if the content is interlaced, is top field displayed first.\
2744ca9a 567 * - encoding: set by user\
9dad924e 568 * - decoding: set by lavc\
2744ca9a 569 */\
9dad924e 570 int top_field_first;\
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571 \
572 /**\
573 * Pan scan.\
574 * - encoding: set by user\
575 * - decoding: set by lavc\
576 */\
577 AVPanScan *pan_scan;\
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578 \
579 /**\
580 * tell user application that palette has changed from previous frame.\
581 * - encoding: ??? (no palette-enabled encoder yet)\
582 * - decoding: set by lavc (default 0)\
583 */\
584 int palette_has_changed;\
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585 \
586 /**\
587 * Codec suggestion on buffer type if != 0\
588 * - encoding: unused\
589 * - decoding: set by lavc (before get_buffer() call))\
590 */\
591 int buffer_hints;\
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592\
593 /**\
594 * DCT coeffitients\
595 * - encoding: unused\
596 * - decoding: set by lavc\
597 */\
598 short *dct_coeff;\
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599\
600 /**\
601 * Motion referece frame index\
602 * - encoding: set by user\
603 * - decoding: set by lavc\
604 */\
605 int8_t *ref_index[2];
2ec23b6d 606
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607#define FF_QSCALE_TYPE_MPEG1 0
608#define FF_QSCALE_TYPE_MPEG2 1
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609
610#define FF_BUFFER_TYPE_INTERNAL 1
9b56edf5 611#define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
a4d36c11 612#define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
9b56edf5 613#define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
4e00e76b 614
1e491e29 615
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616#define FF_I_TYPE 1 // Intra
617#define FF_P_TYPE 2 // Predicted
618#define FF_B_TYPE 3 // Bi-dir predicted
619#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
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620#define FF_SI_TYPE 5
621#define FF_SP_TYPE 6
1e491e29 622
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623#define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
624#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
625#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
626#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
627
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628/**
629 * Audio Video Frame.
630 */
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631typedef struct AVFrame {
632 FF_COMMON_FRAME
633} AVFrame;
1e491e29 634
14bea432 635#define DEFAULT_FRAME_RATE_BASE 1001000
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636
637/**
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638 * Used by av_log
639 */
640typedef struct AVCLASS AVClass;
641struct AVCLASS {
642 const char* class_name;
643 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
644 or AVFormatContext, which begin with an AVClass.
645 Needed because av_log is in libavcodec and has no visibility
646 of AVIn/OutputFormat */
647};
648
649/**
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650 * main external api structure.
651 */
de6d9b64 652typedef struct AVCodecContext {
b71901e6 653 /**
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654 * Info on struct for av_log
655 * - set by avcodec_alloc_context
656 */
43465395 657 AVClass *av_class;
bc874dae 658 /**
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659 * the average bitrate.
660 * - encoding: set by user. unused for constant quantizer encoding
661 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
b71901e6 662 */
de6d9b64 663 int bit_rate;
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664
665 /**
64863965 666 * number of bits the bitstream is allowed to diverge from the reference.
b71901e6 667 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
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668 * - encoding: set by user. unused for constant quantizer encoding
669 * - decoding: unused
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670 */
671 int bit_rate_tolerance;
672
673 /**
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674 * CODEC_FLAG_*.
675 * - encoding: set by user.
676 * - decoding: set by user.
b71901e6 677 */
de6d9b64 678 int flags;
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679
680 /**
681 * some codecs needs additionnal format info. It is stored here
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682 * - encoding: set by user.
683 * - decoding: set by lavc. (FIXME is this ok?)
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684 */
685 int sub_id;
686
687 /**
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688 * motion estimation algorithm used for video coding.
689 * - encoding: MUST be set by user.
690 * - decoding: unused
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691 */
692 int me_method;
693
694 /**
64863965 695 * some codecs need / can use extra-data like huffman tables.
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696 * mjpeg: huffman tables
697 * rv10: additional flags
b704e742 698 * mpeg4: global headers (they can be in the bitstream or here)
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699 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
700 * then extradata_size to avoid prolems if its read with the bitstream reader
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701 * - encoding: set/allocated/freed by lavc.
702 * - decoding: set/allocated/freed by user.
b71901e6 703 */
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704 void *extradata;
705 int extradata_size;
706
de6d9b64 707 /* video only */
b71901e6 708 /**
14bea432 709 * frames per sec multiplied by frame_rate_base.
b71901e6 710 * for variable fps this is the precission, so if the timestamps
14bea432 711 * can be specified in msec precssion then this is 1000*frame_rate_base
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712 * - encoding: MUST be set by user
713 * - decoding: set by lavc. 0 or the frame_rate if available
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714 */
715 int frame_rate;
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716
717 /**
21adafec 718 * picture width / height.
64863965 719 * - encoding: MUST be set by user.
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720 * - decoding: set by lavc.
721 * Note, for compatibility its possible to set this instead of
722 * coded_width/height before decoding
b71901e6 723 */
de6d9b64 724 int width, height;
b71901e6 725
e769f053 726#define FF_ASPECT_EXTENDED 15
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727
728 /**
64863965
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729 * the number of pictures in a group of pitures, or 0 for intra_only.
730 * - encoding: set by user.
731 * - decoding: unused
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732 */
733 int gop_size;
734
735 /**
64863965 736 * pixel format, see PIX_FMT_xxx.
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737 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
738 * conversion is in order. This only works for
739 * codecs with one supported pix_fmt, we should
740 * do something for a generic case as well.
64863965 741 * - decoding: set by lavc.
b71901e6 742 */
e4eadb4b 743 enum PixelFormat pix_fmt;
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744
745 /**
746 * Frame rate emulation. If not zero lower layer (i.e. format handler)
747 * has to read frames at native frame rate.
748 * - encoding: set by user.
749 * - decoding: unused.
750 */
751 int rate_emu;
752
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753 /**
754 * if non NULL, 'draw_horiz_band' is called by the libavcodec
755 * decoder to draw an horizontal band. It improve cache usage. Not
756 * all codecs can do that. You must check the codec capabilities
757 * before
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758 * - encoding: unused
759 * - decoding: set by user.
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760 * @param height the height of the slice
761 * @param y the y position of the slice
762 * @param type 1->top field, 2->bottom field, 3->frame
763 * @param offset offset into the AVFrame.data from which the slice should be read
b71901e6 764 */
bf89e6b1 765 void (*draw_horiz_band)(struct AVCodecContext *s,
da64ecc3 766 const AVFrame *src, int offset[4],
3bb07d61 767 int y, int type, int height);
bf89e6b1 768
de6d9b64 769 /* audio only */
64863965 770 int sample_rate; ///< samples per sec
de6d9b64 771 int channels;
64863965 772 int sample_fmt; ///< sample format, currenly unused
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773
774 /* the following data should not be initialized */
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775 int frame_size; ///< in samples, initialized when calling 'init'
776 int frame_number; ///< audio or video frame number
777 int real_pict_num; ///< returns the real picture number of previous encoded frame
1e491e29 778
b71901e6 779 /**
b71901e6 780 * number of frames the decoded output will be delayed relative to
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781 * the encoded input.
782 * - encoding: set by lavc.
783 * - decoding: unused
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784 */
785 int delay;
1ff662cc 786
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787 /* - encoding parameters */
788 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
789 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
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790
791 /**
64863965
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792 * minimum quantizer.
793 * - encoding: set by user.
794 * - decoding: unused
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795 */
796 int qmin;
797
798 /**
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799 * maximum quantizer.
800 * - encoding: set by user.
801 * - decoding: unused
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802 */
803 int qmax;
804
805 /**
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806 * maximum quantizer difference etween frames.
807 * - encoding: set by user.
808 * - decoding: unused
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809 */
810 int max_qdiff;
811
812 /**
64863965 813 * maximum number of b frames between non b frames.
b71901e6 814 * note: the output will be delayed by max_b_frames+1 relative to the input
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815 * - encoding: set by user.
816 * - decoding: unused
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817 */
818 int max_b_frames;
819
820 /**
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821 * qscale factor between ip and b frames.
822 * - encoding: set by user.
823 * - decoding: unused
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824 */
825 float b_quant_factor;
826
827 /** obsolete FIXME remove */
828 int rc_strategy;
8b4c7dbc 829 int b_frame_strategy;
9dbcbd92 830
b71901e6 831 /**
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832 * hurry up amount.
833 * - encoding: unused
834 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
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835 */
836 int hurry_up;
2417652e 837
de6d9b64 838 struct AVCodec *codec;
b71901e6 839
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840 void *priv_data;
841
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842 /* unused, FIXME remove*/
843 int rtp_mode;
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J
844
845 int rtp_payload_size; /* The size of the RTP payload, the coder will */
846 /* do it's best to deliver a chunk with size */
847 /* below rtp_payload_size, the chunk will start */
848 /* with a start code on some codecs like H.263 */
849 /* This doesn't take account of any particular */
850 /* headers inside the transmited RTP payload */
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J
851
852
853 /* The RTP callcack: This function is called */
854 /* every time the encoder as a packet to send */
855 /* Depends on the encoder if the data starts */
856 /* with a Start Code (it should) H.263 does */
a7fcb3ea 857 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number);
81401c1f 858
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859 /* statistics, used for 2-pass encoding */
860 int mv_bits;
861 int header_bits;
862 int i_tex_bits;
863 int p_tex_bits;
864 int i_count;
865 int p_count;
866 int skip_count;
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867 int misc_bits;
868
869 /**
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870 * number of bits used for the previously encoded frame.
871 * - encoding: set by lavc
7004ffb3 872 * - decoding: unused
b71901e6 873 */
098eefe1 874 int frame_bits;
7004ffb3 875
b71901e6 876 /**
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877 * private data of the user, can be used to carry app specific stuff.
878 * - encoding: set by user
879 * - decoding: set by user
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880 */
881 void *opaque;
882
de6d9b64 883 char codec_name[32];
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PG
884 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
885 enum CodecID codec_id; /* see CODEC_ID_xxx */
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886
887 /**
888 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
889 * this is used to workaround some encoder bugs
bd5a6020 890 * - encoding: set by user, if not then the default based on codec_id will be used
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891 * - decoding: set by user, will be converted to upper case by lavc during init
892 */
893 unsigned int codec_tag;
92ba5ffb 894
b71901e6 895 /**
64863965
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896 * workaround bugs in encoders which sometimes cannot be detected automatically.
897 * - encoding: unused
898 * - decoding: set by user
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899 */
900 int workaround_bugs;
64863965 901#define FF_BUG_AUTODETECT 1 ///< autodetection
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902#define FF_BUG_OLD_MSMPEG4 2
903#define FF_BUG_XVID_ILACE 4
904#define FF_BUG_UMP4 8
905#define FF_BUG_NO_PADDING 16
3116cb14 906#define FF_BUG_AMV 32
ac0c6638 907#define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
03e93d35 908#define FF_BUG_QPEL_CHROMA 64
db794953 909#define FF_BUG_STD_QPEL 128
36df8805 910#define FF_BUG_QPEL_CHROMA2 256
c40c3482 911#define FF_BUG_DIRECT_BLOCKSIZE 512
1c6dcb0f 912#define FF_BUG_EDGE 1024
b44bdf7e 913#define FF_BUG_HPEL_CHROMA 2048
4ccde216 914#define FF_BUG_DC_CLIP 4096
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915//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
916
b71901e6 917 /**
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918 * luma single coeff elimination threshold.
919 * - encoding: set by user
920 * - decoding: unused
b71901e6 921 */
1f6b6e50 922 int luma_elim_threshold;
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923
924 /**
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925 * chroma single coeff elimination threshold.
926 * - encoding: set by user
927 * - decoding: unused
b71901e6 928 */
1f6b6e50 929 int chroma_elim_threshold;
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930
931 /**
64863965
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932 * strictly follow the std (MPEG4, ...).
933 * - encoding: set by user
934 * - decoding: unused
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935 */
936 int strict_std_compliance;
937
938 /**
64863965 939 * qscale offset between ip and b frames.
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940 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
941 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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942 * - encoding: set by user.
943 * - decoding: unused
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944 */
945 float b_quant_offset;
946
947 /**
ce3bcaed 948 * error resilience higher values will detect more errors but may missdetect
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949 * some more or less valid parts as errors.
950 * - encoding: unused
951 * - decoding: set by user
b71901e6 952 */
1f6b6e50 953 int error_resilience;
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954#define FF_ER_CAREFULL 1
955#define FF_ER_COMPLIANT 2
956#define FF_ER_AGGRESSIVE 3
957#define FF_ER_VERY_AGGRESSIVE 4
ae72cda6 958
6b72ac63 959 /**
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960 * called at the beginning of each frame to get a buffer for it.
961 * if pic.reference is set then the frame will be read later by lavc
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962 * avcodec_align_dimensions() should be used to find the required width and
963 * height, as they normally need to be rounded up to the next multiple of 16
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964 * - encoding: unused
965 * - decoding: set by lavc, user can override
b71901e6 966 */
492cd3a9 967 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
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968
969 /**
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970 * called to release buffers which where allocated with get_buffer.
971 * a released buffer can be reused in get_buffer()
972 * pic.data[*] must be set to NULL
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973 * - encoding: unused
974 * - decoding: set by lavc, user can override
b71901e6 975 */
492cd3a9 976 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
0fd90455 977
b71901e6 978 /**
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979 * if 1 the stream has a 1 frame delay during decoding.
980 * - encoding: set by lavc
64863965 981 * - decoding: set by lavc
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982 */
983 int has_b_frames;
b71901e6 984
64863965 985 int block_align; ///< used by some WAV based audio codecs
ce980a95 986
64863965 987 int parse_only; /* - decoding only: if true, only parsing is done
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FB
988 (function avcodec_parse_frame()). The frame
989 data is returned. Only MPEG codecs support this now. */
ce980a95 990
b71901e6 991 /**
e4eadb4b 992 * 0-> h263 quant 1-> mpeg quant.
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993 * - encoding: set by user.
994 * - decoding: unused
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995 */
996 int mpeg_quant;
ce980a95 997
b71901e6 998 /**
64863965
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999 * pass1 encoding statistics output buffer.
1000 * - encoding: set by lavc
1001 * - decoding: unused
b71901e6 1002 */
64863965 1003 char *stats_out;
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1004
1005 /**
1006 * pass2 encoding statistics input buffer.
1007 * concatenated stuff from stats_out of pass1 should be placed here
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1008 * - encoding: allocated/set/freed by user
1009 * - decoding: unused
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1010 */
1011 char *stats_in;
1012
1013 /**
64863965 1014 * ratecontrol qmin qmax limiting method.
b71901e6 1015 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
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1016 * - encoding: set by user.
1017 * - decoding: unused
b71901e6 1018 */
ce980a95 1019 float rc_qsquish;
b71901e6 1020
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1021 float rc_qmod_amp;
1022 int rc_qmod_freq;
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1023
1024 /**
64863965
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1025 * ratecontrol override, see RcOverride.
1026 * - encoding: allocated/set/freed by user.
1027 * - decoding: unused
b71901e6 1028 */
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1029 RcOverride *rc_override;
1030 int rc_override_count;
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MN
1031
1032 /**
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1033 * rate control equation.
1034 * - encoding: set by user
1035 * - decoding: unused
b71901e6 1036 */
ce980a95 1037 char *rc_eq;
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1038
1039 /**
64863965
MN
1040 * maximum bitrate.
1041 * - encoding: set by user.
1042 * - decoding: unused
b71901e6 1043 */
ce980a95 1044 int rc_max_rate;
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1045
1046 /**
64863965
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1047 * minimum bitrate.
1048 * - encoding: set by user.
1049 * - decoding: unused
b71901e6 1050 */
ce980a95 1051 int rc_min_rate;
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1052
1053 /**
64863965
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1054 * decoder bitstream buffer size.
1055 * - encoding: set by user.
1056 * - decoding: unused
b71901e6 1057 */
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1058 int rc_buffer_size;
1059 float rc_buffer_aggressivity;
b71901e6
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1060
1061 /**
64863965 1062 * qscale factor between p and i frames.
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1063 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1064 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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1065 * - encoding: set by user.
1066 * - decoding: unused
b71901e6
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1067 */
1068 float i_quant_factor;
1069
1070 /**
64863965 1071 * qscale offset between p and i frames.
64863965
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1072 * - encoding: set by user.
1073 * - decoding: unused
b71901e6
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1074 */
1075 float i_quant_offset;
1076
1077 /**
64863965
MN
1078 * initial complexity for pass1 ratecontrol.
1079 * - encoding: set by user.
1080 * - decoding: unused
b71901e6 1081 */
ce980a95 1082 float rc_initial_cplx;
917e06c8 1083
b71901e6 1084 /**
64863965
MN
1085 * dct algorithm, see FF_DCT_* below.
1086 * - encoding: set by user
1087 * - decoding: unused
b71901e6 1088 */
28db7fce 1089 int dct_algo;
c7e07931 1090#define FF_DCT_AUTO 0
28db7fce 1091#define FF_DCT_FASTINT 1
c7e07931
MO
1092#define FF_DCT_INT 2
1093#define FF_DCT_MMX 3
1094#define FF_DCT_MLIB 4
05c4072b 1095#define FF_DCT_ALTIVEC 5
65e4c8c9 1096#define FF_DCT_FAAN 6
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MN
1097
1098 /**
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1099 * luminance masking (0-> disabled).
1100 * - encoding: set by user
1101 * - decoding: unused
c5d309f2
MN
1102 */
1103 float lumi_masking;
1104
1105 /**
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1106 * temporary complexity masking (0-> disabled).
1107 * - encoding: set by user
1108 * - decoding: unused
c5d309f2
MN
1109 */
1110 float temporal_cplx_masking;
1111
1112 /**
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1113 * spatial complexity masking (0-> disabled).
1114 * - encoding: set by user
1115 * - decoding: unused
c5d309f2
MN
1116 */
1117 float spatial_cplx_masking;
1118
1119 /**
64863965
MN
1120 * p block masking (0-> disabled).
1121 * - encoding: set by user
1122 * - decoding: unused
c5d309f2
MN
1123 */
1124 float p_masking;
15415af4 1125
5e746b99 1126 /**
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1127 * darkness masking (0-> disabled).
1128 * - encoding: set by user
1129 * - decoding: unused
5e746b99
MN
1130 */
1131 float dark_masking;
0c2dd16e 1132
3a694b04
NK
1133
1134 /* for binary compatibility */
1135 int unused;
1136
0c2dd16e 1137 /**
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1138 * idct algorithm, see FF_IDCT_* below.
1139 * - encoding: set by user
1140 * - decoding: set by user
2ad1516a
MN
1141 */
1142 int idct_algo;
1143#define FF_IDCT_AUTO 0
1144#define FF_IDCT_INT 1
1145#define FF_IDCT_SIMPLE 2
1146#define FF_IDCT_SIMPLEMMX 3
1147#define FF_IDCT_LIBMPEG2MMX 4
1148#define FF_IDCT_PS2 5
1149#define FF_IDCT_MLIB 6
1150#define FF_IDCT_ARM 7
05c4072b 1151#define FF_IDCT_ALTIVEC 8
b82cdc72 1152#define FF_IDCT_SH4 9
bd7d1ea7 1153#define FF_IDCT_SIMPLEARM 10
0fa8158d 1154#define FF_IDCT_H264 11
2ad1516a 1155
144f0625 1156 /**
64863965
MN
1157 * slice count.
1158 * - encoding: set by lavc
1159 * - decoding: set by user (or 0)
144f0625
MN
1160 */
1161 int slice_count;
1162 /**
64863965
MN
1163 * slice offsets in the frame in bytes.
1164 * - encoding: set/allocated by lavc
1165 * - decoding: set/allocated by user (or NULL)
144f0625
MN
1166 */
1167 int *slice_offset;
1168
4d2858de 1169 /**
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1170 * error concealment flags.
1171 * - encoding: unused
1172 * - decoding: set by user
4d2858de
MN
1173 */
1174 int error_concealment;
1175#define FF_EC_GUESS_MVS 1
1176#define FF_EC_DEBLOCK 2
1177
6b72ac63 1178 /**
bec89a84 1179 * dsp_mask could be add used to disable unwanted CPU features
8350df97 1180 * CPU features (i.e. MMX, SSE. ...)
bec89a84
ZK
1181 *
1182 * with FORCE flag you may instead enable given CPU features
1183 * (Dangerous: usable in case of misdetection, improper usage however will
1184 * result into program crash)
1185 */
1186 unsigned dsp_mask;
1187#define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1188 /* lower 16 bits - CPU features */
1189#ifdef HAVE_MMX
1190#define FF_MM_MMX 0x0001 /* standard MMX */
1191#define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1192#define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1193#define FF_MM_SSE 0x0008 /* SSE functions */
1194#define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
e42a152b 1195#define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
bec89a84 1196#endif /* HAVE_MMX */
11f18faf
MN
1197
1198 /**
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1199 * bits per sample/pixel from the demuxer (needed for huffyuv).
1200 * - encoding: set by lavc
1201 * - decoding: set by user
11f18faf
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1202 */
1203 int bits_per_sample;
1204
1205 /**
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1206 * prediction method (needed for huffyuv).
1207 * - encoding: set by user
1208 * - decoding: unused
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1209 */
1210 int prediction_method;
1211#define FF_PRED_LEFT 0
1212#define FF_PRED_PLANE 1
1213#define FF_PRED_MEDIAN 2
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MN
1214
1215 /**
5ff85f1d 1216 * sample aspect ratio (0 if unknown).
1f26c6f3 1217 * numerator and denominator must be relative prime and smaller then 256 for some video standards
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1218 * - encoding: set by user.
1219 * - decoding: set by lavc.
5d3cea3a 1220 */
5ff85f1d 1221 AVRational sample_aspect_ratio;
1e491e29
MN
1222
1223 /**
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1224 * the picture in the bitstream.
1225 * - encoding: set by lavc
1226 * - decoding: set by lavc
1e491e29 1227 */
492cd3a9 1228 AVFrame *coded_frame;
c8c437bc
MN
1229
1230 /**
64863965
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1231 * debug.
1232 * - encoding: set by user.
1233 * - decoding: set by user.
c8c437bc
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1234 */
1235 int debug;
1236#define FF_DEBUG_PICT_INFO 1
1237#define FF_DEBUG_RC 2
1238#define FF_DEBUG_BITSTREAM 4
1239#define FF_DEBUG_MB_TYPE 8
1240#define FF_DEBUG_QP 16
1241#define FF_DEBUG_MV 32
8289c6fa 1242#define FF_DEBUG_DCT_COEFF 0x00000040
41773b73
MN
1243#define FF_DEBUG_SKIP 0x00000080
1244#define FF_DEBUG_STARTCODE 0x00000100
1245#define FF_DEBUG_PTS 0x00000200
46b4feec 1246#define FF_DEBUG_ER 0x00000400
0da71265 1247#define FF_DEBUG_MMCO 0x00000800
8fc6c2b5 1248#define FF_DEBUG_BUGS 0x00001000
864119b6
MN
1249#define FF_DEBUG_VIS_QP 0x00002000
1250#define FF_DEBUG_VIS_MB_TYPE 0x00004000
140cb663
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1251
1252 /**
0c9bbaec
WH
1253 * debug.
1254 * - encoding: set by user.
1255 * - decoding: set by user.
1256 */
1257 int debug_mv;
1258#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1259#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1260#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1261
1262 /**
64863965
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1263 * error.
1264 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1265 * - decoding: unused
140cb663
MN
1266 */
1267 uint64_t error[4];
17a70fde
MN
1268
1269 /**
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1270 * minimum MB quantizer.
1271 * - encoding: set by user.
1272 * - decoding: unused
17a70fde
MN
1273 */
1274 int mb_qmin;
1275
1276 /**
64863965
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1277 * maximum MB quantizer.
1278 * - encoding: set by user.
1279 * - decoding: unused
17a70fde
MN
1280 */
1281 int mb_qmax;
1457ab52
MN
1282
1283 /**
64863965
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1284 * motion estimation compare function.
1285 * - encoding: set by user.
1286 * - decoding: unused
1457ab52
MN
1287 */
1288 int me_cmp;
1289 /**
64863965
MN
1290 * subpixel motion estimation compare function.
1291 * - encoding: set by user.
1292 * - decoding: unused
1457ab52
MN
1293 */
1294 int me_sub_cmp;
1295 /**
64863965
MN
1296 * macroblock compare function (not supported yet).
1297 * - encoding: set by user.
1298 * - decoding: unused
1457ab52
MN
1299 */
1300 int mb_cmp;
622348f9
MN
1301 /**
1302 * interlaced dct compare function
1303 * - encoding: set by user.
1304 * - decoding: unused
1305 */
1306 int ildct_cmp;
1457ab52
MN
1307#define FF_CMP_SAD 0
1308#define FF_CMP_SSE 1
1309#define FF_CMP_SATD 2
1310#define FF_CMP_DCT 3
1311#define FF_CMP_PSNR 4
1312#define FF_CMP_BIT 5
1313#define FF_CMP_RD 6
1314#define FF_CMP_ZERO 7
622348f9
MN
1315#define FF_CMP_VSAD 8
1316#define FF_CMP_VSSE 9
e6a2ac34 1317#define FF_CMP_NSSE 10
26efc54e
MN
1318#define FF_CMP_W53 11
1319#define FF_CMP_W97 12
0fd6aea1 1320#define FF_CMP_DCTMAX 13
1457ab52
MN
1321#define FF_CMP_CHROMA 256
1322
1323 /**
64863965
MN
1324 * ME diamond size & shape.
1325 * - encoding: set by user.
1326 * - decoding: unused
1457ab52
MN
1327 */
1328 int dia_size;
b07a5980
MN
1329
1330 /**
64863965
MN
1331 * amount of previous MV predictors (2a+1 x 2a+1 square).
1332 * - encoding: set by user.
1333 * - decoding: unused
b07a5980
MN
1334 */
1335 int last_predictor_count;
70ac76c0 1336
f5fb6b34 1337 /**
64863965
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1338 * pre pass for motion estimation.
1339 * - encoding: set by user.
1340 * - decoding: unused
f5fb6b34
MN
1341 */
1342 int pre_me;
b07a5980 1343
70ac76c0 1344 /**
64863965
MN
1345 * motion estimation pre pass compare function.
1346 * - encoding: set by user.
1347 * - decoding: unused
70ac76c0
MN
1348 */
1349 int me_pre_cmp;
826f429a 1350
70ac76c0 1351 /**
64863965
MN
1352 * ME pre pass diamond size & shape.
1353 * - encoding: set by user.
1354 * - decoding: unused
70ac76c0
MN
1355 */
1356 int pre_dia_size;
1357
826f429a 1358 /**
64863965
MN
1359 * subpel ME quality.
1360 * - encoding: set by user.
1361 * - decoding: unused
826f429a
MN
1362 */
1363 int me_subpel_quality;
1364
a33c7159 1365 /**
64863965 1366 * callback to negotiate the pixelFormat.
a33c7159
MN
1367 * @param fmt is the list of formats which are supported by the codec,
1368 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1369 * the first is allways the native one
1370 * @return the choosen format
64863965
MN
1371 * - encoding: unused
1372 * - decoding: set by user, if not set then the native format will always be choosen
a33c7159 1373 */
494c56d3 1374 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
e2f9490e
FB
1375
1376 /**
1377 * DTG active format information (additionnal aspect ratio
1378 * information only used in DVB MPEG2 transport streams). 0 if
1379 * not set.
1380 *
64863965
MN
1381 * - encoding: unused.
1382 * - decoding: set by decoder
e2f9490e
FB
1383 */
1384 int dtg_active_format;
1385#define FF_DTG_AFD_SAME 8
1386#define FF_DTG_AFD_4_3 9
1387#define FF_DTG_AFD_16_9 10
1388#define FF_DTG_AFD_14_9 11
1389#define FF_DTG_AFD_4_3_SP_14_9 13
1390#define FF_DTG_AFD_16_9_SP_14_9 14
1391#define FF_DTG_AFD_SP_4_3 15
1392
ebbcdc9a
MN
1393 /**
1394 * Maximum motion estimation search range in subpel units.
1395 * if 0 then no limit
1396 *
64863965
MN
1397 * - encoding: set by user.
1398 * - decoding: unused.
ebbcdc9a 1399 */
59e0ac8e 1400 int me_range;
ebbcdc9a 1401
65f7062d
MN
1402 /**
1403 * frame_rate_base.
1404 * for variable fps this is 1
1405 * - encoding: set by user.
1406 * - decoding: set by lavc.
1407 * @todo move this after frame_rate
1408 */
65f7062d 1409
1984f635
MN
1410 int frame_rate_base;
1411 /**
1412 * intra quantizer bias.
1413 * - encoding: set by user.
1414 * - decoding: unused
1415 */
1416 int intra_quant_bias;
1417#define FF_DEFAULT_QUANT_BIAS 999999
1418
1419 /**
1420 * inter quantizer bias.
1421 * - encoding: set by user.
1422 * - decoding: unused
1423 */
1424 int inter_quant_bias;
5cd62665
ZK
1425
1426 /**
1427 * color table ID.
1428 * - encoding: unused.
1429 * - decoding: which clrtable should be used for 8bit RGB images
1430 * table have to be stored somewhere FIXME
1431 */
1432 int color_table_id;
1984f635 1433
d90cf87b
MN
1434 /**
1435 * internal_buffer count.
1436 * Dont touch, used by lavc default_get_buffer()
1437 */
1438 int internal_buffer_count;
1439
1440 /**
1441 * internal_buffers.
1442 * Dont touch, used by lavc default_get_buffer()
1443 */
1444 void *internal_buffer;
158c7f05
MN
1445
1446#define FF_LAMBDA_SHIFT 7
1447#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1448#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1449#define FF_LAMBDA_MAX (256*128-1)
1450
1451#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
3d2e8cce
MN
1452 /**
1453 * global quality for codecs which cannot change it per frame.
1454 * this should be proportional to MPEG1/2/4 qscale.
1455 * - encoding: set by user.
1456 * - decoding: unused
1457 */
1458 int global_quality;
11e659c2
MN
1459
1460#define FF_CODER_TYPE_VLC 0
1461#define FF_CODER_TYPE_AC 1
1462 /**
1463 * coder type
1464 * - encoding: set by user.
1465 * - decoding: unused
1466 */
1467 int coder_type;
1468
1469 /**
1470 * context model
1471 * - encoding: set by user.
1472 * - decoding: unused
1473 */
1474 int context_model;
3bb07d61
MN
1475
1476 /**
1477 * slice flags
1478 * - encoding: unused
1479 * - decoding: set by user.
1480 */
1481 int slice_flags;
1482#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1483#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1484#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1485
fb364ada
IK
1486 /**
1487 * XVideo Motion Acceleration
1488 * - encoding: forbidden
1489 * - decoding: set by decoder
1490 */
1491 int xvmc_acceleration;
7d1c3fc1
MN
1492
1493 /**
1494 * macroblock decision mode
1495 * - encoding: set by user.
1496 * - decoding: unused
1497 */
1498 int mb_decision;
1499#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1500#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1501#define FF_MB_DECISION_RD 2 ///< rate distoration
d6eb3c50
MN
1502
1503 /**
1504 * custom intra quantization matrix
1505 * - encoding: set by user, can be NULL
1506 * - decoding: set by lavc
1507 */
1508 uint16_t *intra_matrix;
1509
1510 /**
1511 * custom inter quantization matrix
1512 * - encoding: set by user, can be NULL
1513 * - decoding: set by lavc
1514 */
1515 uint16_t *inter_matrix;
7d1c3fc1 1516
541ae140
MN
1517 /**
1518 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1519 * this is used to workaround some encoder bugs
1520 * - encoding: unused
1521 * - decoding: set by user, will be converted to upper case by lavc during init
1522 */
1523 unsigned int stream_codec_tag;
05fbd0a2
MN
1524
1525 /**
1526 * scene change detection threshold.
1527 * 0 is default, larger means fewer detected scene changes
1528 * - encoding: set by user.
1529 * - decoding: unused
1530 */
1531 int scenechange_threshold;
158c7f05
MN
1532
1533 /**
1534 * minimum lagrange multipler
1535 * - encoding: set by user.
1536 * - decoding: unused
1537 */
1538 int lmin;
1539
1540 /**
1541 * maximum lagrange multipler
1542 * - encoding: set by user.
1543 * - decoding: unused
1544 */
1545 int lmax;
2a2bbcb0
MM
1546
1547 /**
1548 * Palette control structure
1549 * - encoding: ??? (no palette-enabled encoder yet)
1550 * - decoding: set by user.
1551 */
1552 struct AVPaletteControl *palctrl;
821cb11f
MN
1553
1554 /**
1555 * noise reduction strength
1556 * - encoding: set by user.
1557 * - decoding: unused
1558 */
1559 int noise_reduction;
fa384dcc 1560
074c4ca7 1561 /**
e1c2a5a0
RT
1562 * called at the beginning of a frame to get cr buffer for it.
1563 * buffer type (size, hints) must be the same. lavc won't check it.
1564 * lavc will pass previous buffer in pic, function should return
1565 * same buffer or new buffer with old frame "painted" into it.
1566 * if pic.data[0] == NULL must behave like get_buffer().
074c4ca7 1567 * - encoding: unused
e1c2a5a0 1568 * - decoding: set by lavc, user can override
074c4ca7 1569 */
e1c2a5a0 1570 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
ba58dabc
MN
1571
1572 /**
1573 * number of bits which should be loaded into the rc buffer before decoding starts
1574 * - encoding: set by user.
1575 * - decoding: unused
1576 */
1577 int rc_initial_buffer_occupancy;
1578
1579 /**
1580 *
1581 * - encoding: set by user.
1582 * - decoding: unused
1583 */
1584 int inter_threshold;
1585
1586 /**
1587 * CODEC_FLAG2_*.
1588 * - encoding: set by user.
1589 * - decoding: set by user.
1590 */
1591 int flags2;
7ebfc0ea
MN
1592
1593 /**
1594 * simulates errors in the bitstream to test error concealment.
1595 * - encoding: set by user.
1596 * - decoding: unused.
1597 */
1598 int error_rate;
a1e257b2
MN
1599
1600 /**
1601 * MP3 antialias algorithm, see FF_AA_* below.
1602 * - encoding: unused
1603 * - decoding: set by user
1604 */
1605 int antialias_algo;
1606#define FF_AA_AUTO 0
1607#define FF_AA_FASTINT 1 //not implemented yet
1608#define FF_AA_INT 2
1609#define FF_AA_FLOAT 3
77ea0d4b
MN
1610 /**
1611 * Quantizer noise shaping.
1612 * - encoding: set by user
1613 * - decoding: unused
1614 */
1615 int quantizer_noise_shaping;
9c3d33d6
MN
1616
1617 /**
1618 * Thread count.
1619 * is used to decide how many independant tasks should be passed to execute()
1620 * - encoding: set by user
1621 * - decoding: set by user
1622 */
1623 int thread_count;
1624
1625 /**
1626 * the codec may call this to execute several independant things. it will return only after
1627 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1628 * default implementation will execute the parts serially
399cec2f 1629 * @param count the number of things to execute
9c3d33d6
MN
1630 * - encoding: set by lavc, user can override
1631 * - decoding: set by lavc, user can override
1632 */
1633 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1634
1635 /**
1636 * Thread opaque.
1637 * can be used by execute() to store some per AVCodecContext stuff.
1638 * - encoding: set by execute()
1639 * - decoding: set by execute()
1640 */
1641 void *thread_opaque;
a4d36c11
MN
1642
1643 /**
f20f8a8b
MN
1644 * Motion estimation threshold. under which no motion estimation is
1645 * performed, but instead the user specified motion vectors are used
a4d36c11
MN
1646 *
1647 * - encoding: set by user
f20f8a8b 1648 * - decoding: unused
a4d36c11 1649 */
2750b827 1650 int me_threshold;
f20f8a8b
MN
1651
1652 /**
1653 * Macroblock threshold. under which the user specified macroblock types will be used
1654 * - encoding: set by user
1655 * - decoding: unused
1656 */
1657 int mb_threshold;
bf266e19
MN
1658
1659 /**
d4c5d2ad 1660 * precision of the intra dc coefficient - 8.
bf266e19
MN
1661 * - encoding: set by user
1662 * - decoding: unused
1663 */
1664 int intra_dc_precision;
d4c5d2ad
MN
1665
1666 /**
1667 * noise vs. sse weight for the nsse comparsion function.
1668 * - encoding: set by user
1669 * - decoding: unused
1670 */
1671 int nsse_weight;
0dfd33c3
MN
1672
1673 /**
1674 * number of macroblock rows at the top which are skiped.
1675 * - encoding: unused
1676 * - decoding: set by user
1677 */
1678 int skip_top;
1679
1680 /**
1681 * number of macroblock rows at the bottom which are skiped.
1682 * - encoding: unused
1683 * - decoding: set by user
1684 */
1685 int skip_bottom;
baced9f5
MN
1686
1687 /**
1688 * profile
1689 * - encoding: set by user
1690 * - decoding: set by lavc
1691 */
1692 int profile;
1693#define FF_PROFILE_UNKNOWN -99
1694
1695 /**
1696 * level
1697 * - encoding: set by user
1698 * - decoding: set by lavc
1699 */
1700 int level;
1701#define FF_LEVEL_UNKNOWN -99
178fcca8
MN
1702
1703 /**
1704 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1705 * - encoding: unused
1706 * - decoding: set by user
1707 */
1708 int lowres;
21adafec
MN
1709
1710 /**
bbf18b21 1711 * bitsream width / height. may be different from width/height if lowres
21adafec
MN
1712 * or other things are used
1713 * - encoding: unused
1714 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1715 */
1716 int coded_width, coded_height;
bbf18b21
MN
1717
1718 /**
1719 * frame skip threshold
1720 * - encoding: set by user
1721 * - decoding: unused
1722 */
1723 int frame_skip_threshold;
1724
1725 /**
1726 * frame skip factor
1727 * - encoding: set by user
1728 * - decoding: unused
1729 */
1730 int frame_skip_factor;
0fd6aea1
MN
1731
1732 /**
1733 * frame skip exponent
1734 * - encoding: set by user
1735 * - decoding: unused
1736 */
1737 int frame_skip_exp;
1738
1739 /**
1740 * frame skip comparission function
1741 * - encoding: set by user.
1742 * - decoding: unused
1743 */
1744 int frame_skip_cmp;
de6d9b64
FB
1745} AVCodecContext;
1746
97d96aaa 1747
64863965
MN
1748/**
1749 * AVOption.
1750 */
97d96aaa
ZK
1751typedef struct AVOption {
1752 /** options' name */
1753 const char *name; /* if name is NULL, it indicates a link to next */
bec89a84
ZK
1754 /** short English text help or const struct AVOption* subpointer */
1755 const char *help; // const struct AVOption* sub;
97d96aaa
ZK
1756 /** offset to context structure where the parsed value should be stored */
1757 int offset;
1758 /** options' type */
1759 int type;
64863965
MN
1760#define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1761#define FF_OPT_TYPE_DOUBLE 2 ///< double
1762#define FF_OPT_TYPE_INT 3 ///< integer
1763#define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1764#define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
97d96aaa
ZK
1765//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1766#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1767#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1768 /** min value (min == max -> no limits) */
1769 double min;
1770 /** maximum value for double/int */
1771 double max;
1772 /** default boo [0,1]l/double/int value */
1773 double defval;
1774 /**
1775 * default string value (with optional semicolon delimited extra option-list
1776 * i.e. option1;option2;option3
1777 * defval might select other then first argument as default
1778 */
1779 const char *defstr;
97d96aaa
ZK
1780#define FF_OPT_MAX_DEPTH 10
1781} AVOption;
1782
64863965 1783/**
bec89a84
ZK
1784 * Parse option(s) and sets fields in passed structure
1785 * @param strct structure where the parsed results will be written
1786 * @param list list with AVOptions
1787 * @param opts string with options for parsing
1788 */
1789int avoption_parse(void* strct, const AVOption* list, const char* opts);
1790
1791
1792/**
64863965
MN
1793 * AVCodec.
1794 */
de6d9b64 1795typedef struct AVCodec {
18f77016 1796 const char *name;
5d234974 1797 enum CodecType type;
9297ddd3 1798 enum CodecID id;
de6d9b64
FB
1799 int priv_data_size;
1800 int (*init)(AVCodecContext *);
0c1a9eda 1801 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
de6d9b64 1802 int (*close)(AVCodecContext *);
0fd90455 1803 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
0c1a9eda 1804 uint8_t *buf, int buf_size);
bf89e6b1 1805 int capabilities;
97d96aaa 1806 const AVOption *options;
de6d9b64 1807 struct AVCodec *next;
7a06ff14 1808 void (*flush)(AVCodecContext *);
b0df362b 1809 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
fcee0164 1810 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
de6d9b64
FB
1811} AVCodec;
1812
97d96aaa 1813/**
d7425f59
MN
1814 * four components are given, that's all.
1815 * the last component is alpha
1816 */
de6d9b64 1817typedef struct AVPicture {
0c1a9eda 1818 uint8_t *data[4];
cd394651 1819 int linesize[4]; ///< number of bytes per line
de6d9b64
FB
1820} AVPicture;
1821
ba118447
MM
1822/**
1823 * AVPaletteControl
1824 * This structure defines a method for communicating palette changes
1825 * between and demuxer and a decoder.
1826 */
2e99641b 1827#define AVPALETTE_SIZE 1024
432d84c3 1828#define AVPALETTE_COUNT 256
ba118447
MM
1829typedef struct AVPaletteControl {
1830
1831 /* demuxer sets this to 1 to indicate the palette has changed;
1832 * decoder resets to 0 */
1833 int palette_changed;
1834
2a2bbcb0
MM
1835 /* 4-byte ARGB palette entries, stored in native byte order; note that
1836 * the individual palette components should be on a 8-bit scale; if
1837 * the palette data comes from a IBM VGA native format, the component
1838 * data is probably 6 bits in size and needs to be scaled */
2e99641b 1839 unsigned int palette[AVPALETTE_COUNT];
ba118447
MM
1840
1841} AVPaletteControl;
1842
de6d9b64
FB
1843extern AVCodec ac3_encoder;
1844extern AVCodec mp2_encoder;
9d36bdc9 1845extern AVCodec mp3lame_encoder;
81e0d0b4 1846extern AVCodec oggvorbis_encoder;
29d48296 1847extern AVCodec faac_encoder;
1ddadfa9 1848extern AVCodec xvid_encoder;
de6d9b64 1849extern AVCodec mpeg1video_encoder;
029911d1 1850extern AVCodec mpeg2video_encoder;
1c3990db 1851extern AVCodec h261_encoder;
de6d9b64
FB
1852extern AVCodec h263_encoder;
1853extern AVCodec h263p_encoder;
d4f5d74a 1854extern AVCodec flv_encoder;
de6d9b64 1855extern AVCodec rv10_encoder;
68b94c35 1856extern AVCodec rv20_encoder;
6faa4645 1857extern AVCodec dvvideo_encoder;
de6d9b64 1858extern AVCodec mjpeg_encoder;
b1e6b355 1859extern AVCodec ljpeg_encoder;
4eff7cf4 1860extern AVCodec png_encoder;
5b6d5596
MN
1861extern AVCodec ppm_encoder;
1862extern AVCodec pgm_encoder;
1863extern AVCodec pgmyuv_encoder;
1864extern AVCodec pbm_encoder;
1865extern AVCodec pam_encoder;
bf89e6b1 1866extern AVCodec mpeg4_encoder;
84afee34
MN
1867extern AVCodec msmpeg4v1_encoder;
1868extern AVCodec msmpeg4v2_encoder;
1869extern AVCodec msmpeg4v3_encoder;
0151a6f5
MN
1870extern AVCodec wmv1_encoder;
1871extern AVCodec wmv2_encoder;
11f18faf 1872extern AVCodec huffyuv_encoder;
f37b9768 1873extern AVCodec ffvhuff_encoder;
0da71265 1874extern AVCodec h264_encoder;
3d2e8cce 1875extern AVCodec asv1_encoder;
9b56edf5 1876extern AVCodec asv2_encoder;
be3564ed 1877extern AVCodec vcr1_encoder;
5e20f836 1878extern AVCodec ffv1_encoder;
791e7b83 1879extern AVCodec snow_encoder;
c3bf0288 1880extern AVCodec mdec_encoder;
a273bbfb 1881extern AVCodec zlib_encoder;
54f5fd22
AB
1882extern AVCodec sonic_encoder;
1883extern AVCodec sonic_ls_encoder;
3b64893d 1884extern AVCodec svq1_encoder;
de6d9b64
FB
1885
1886extern AVCodec h263_decoder;
c6148de2 1887extern AVCodec h261_decoder;
bf89e6b1 1888extern AVCodec mpeg4_decoder;
84afee34
MN
1889extern AVCodec msmpeg4v1_decoder;
1890extern AVCodec msmpeg4v2_decoder;
1891extern AVCodec msmpeg4v3_decoder;
e1a9dbff 1892extern AVCodec wmv1_decoder;
0151a6f5 1893extern AVCodec wmv2_decoder;
21aa398f
AB
1894extern AVCodec vc9_decoder;
1895extern AVCodec wmv3_decoder;
922bc38d
MN
1896extern AVCodec mpeg1video_decoder;
1897extern AVCodec mpeg2video_decoder;
c512b303 1898extern AVCodec mpegvideo_decoder;
fb364ada 1899extern AVCodec mpeg_xvmc_decoder;
de6d9b64 1900extern AVCodec h263i_decoder;
d4f5d74a 1901extern AVCodec flv_decoder;
de6d9b64 1902extern AVCodec rv10_decoder;
68b94c35 1903extern AVCodec rv20_decoder;
3f05305d
MN
1904extern AVCodec rv30_decoder;
1905extern AVCodec rv40_decoder;
be8ffec9 1906extern AVCodec svq1_decoder;
8b82a956 1907extern AVCodec svq3_decoder;
020fcc94 1908extern AVCodec dvvideo_decoder;
bc8d1857
FB
1909extern AVCodec wmav1_decoder;
1910extern AVCodec wmav2_decoder;
4e66ab3b 1911extern AVCodec mjpeg_decoder;
b135d9fb 1912extern AVCodec mjpegb_decoder;
5e83dec4 1913extern AVCodec sp5x_decoder;
4eff7cf4 1914extern AVCodec png_decoder;
4b1f4f23 1915extern AVCodec mp2_decoder;
a96b68b7 1916extern AVCodec mp3_decoder;
1ede228a 1917extern AVCodec mp3adu_decoder;
3f95e843
FR
1918extern AVCodec mace3_decoder;
1919extern AVCodec mace6_decoder;
11f18faf 1920extern AVCodec huffyuv_decoder;
f37b9768 1921extern AVCodec ffvhuff_decoder;
3aca208a 1922extern AVCodec oggvorbis_decoder;
f70f7c6d 1923extern AVCodec cyuv_decoder;
0da71265 1924extern AVCodec h264_decoder;
deabd4fd 1925extern AVCodec indeo3_decoder;
d86053a4 1926extern AVCodec vp3_decoder;
f44ee2c3 1927extern AVCodec theora_decoder;
891f64b3 1928extern AVCodec amr_nb_decoder;
bc634f6f 1929extern AVCodec amr_nb_encoder;
d663a1fd
MN
1930extern AVCodec amr_wb_encoder;
1931extern AVCodec amr_wb_decoder;
280bd7b7
ZK
1932extern AVCodec aac_decoder;
1933extern AVCodec mpeg4aac_decoder;
3d2e8cce 1934extern AVCodec asv1_decoder;
9b56edf5 1935extern AVCodec asv2_decoder;
be3564ed 1936extern AVCodec vcr1_decoder;
3aff069b 1937extern AVCodec cljr_decoder;
5e20f836 1938extern AVCodec ffv1_decoder;
791e7b83 1939extern AVCodec snow_decoder;
8809cfee 1940extern AVCodec fourxm_decoder;
c3bf0288 1941extern AVCodec mdec_decoder;
3ef8be2b
MM
1942extern AVCodec roq_decoder;
1943extern AVCodec interplay_video_decoder;
9937e686 1944extern AVCodec xan_wc3_decoder;
2fdf638b
MM
1945extern AVCodec rpza_decoder;
1946extern AVCodec cinepak_decoder;
1947extern AVCodec msrle_decoder;
1948extern AVCodec msvideo1_decoder;
6955a882 1949extern AVCodec vqa_decoder;
4120a53a 1950extern AVCodec idcin_decoder;
1dc1ed99 1951extern AVCodec eightbps_decoder;
11e29a41 1952extern AVCodec smc_decoder;
42cad81a 1953extern AVCodec flic_decoder;
fafa0b75
MM
1954extern AVCodec vmdvideo_decoder;
1955extern AVCodec vmdaudio_decoder;
9a4117d5 1956extern AVCodec truemotion1_decoder;
a273bbfb
RT
1957extern AVCodec mszh_decoder;
1958extern AVCodec zlib_decoder;
b8414bbd
NK
1959extern AVCodec ra_144_decoder;
1960extern AVCodec ra_288_decoder;
3ef8be2b
MM
1961extern AVCodec roq_dpcm_decoder;
1962extern AVCodec interplay_dpcm_decoder;
9937e686 1963extern AVCodec xan_dpcm_decoder;
d08d7142 1964extern AVCodec sol_dpcm_decoder;
54f5fd22 1965extern AVCodec sonic_decoder;
070ed1bc 1966extern AVCodec qtrle_decoder;
ac2570a8 1967extern AVCodec flac_decoder;
9d53d58e 1968extern AVCodec tscc_decoder;
d0a0bbd2 1969extern AVCodec ulti_decoder;
d08d7142 1970extern AVCodec qdraw_decoder;
ab711b3c 1971extern AVCodec xl_decoder;
acfd8f0f 1972extern AVCodec qpeg_decoder;
de6d9b64 1973
a96b68b7
FB
1974/* pcm codecs */
1975#define PCM_CODEC(id, name) \
1976extern AVCodec name ## _decoder; \
f11d3f23 1977extern AVCodec name ## _encoder
a96b68b7
FB
1978
1979PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1980PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1981PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1982PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1983PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1984PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1985PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1986PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1987
0147f198
FR
1988/* adpcm codecs */
1989
1990PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1991PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
9937e686
MM
1992PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1993PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2fdf638b 1994PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
7d8379f2 1995PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
0147f198 1996PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
4b465299 1997PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
fc384777
MM
1998PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1999PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
7d8379f2 2000PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
e5966052 2001PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
b3bfb299 2002PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
0147f198 2003
a96b68b7
FB
2004#undef PCM_CODEC
2005
2006/* dummy raw video codec */
63167088
RS
2007extern AVCodec rawvideo_encoder;
2008extern AVCodec rawvideo_decoder;
de6d9b64
FB
2009
2010/* the following codecs use external GPL libs */
de6d9b64 2011extern AVCodec ac3_decoder;
23c99253 2012extern AVCodec dts_decoder;
de6d9b64
FB
2013
2014/* resample.c */
2015
2016struct ReSampleContext;
aaaf1635 2017struct AVResampleContext;
de6d9b64
FB
2018
2019typedef struct ReSampleContext ReSampleContext;
2020
2021ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2022 int output_rate, int input_rate);
2023int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2024void audio_resample_close(ReSampleContext *s);
2025
6e225de2 2026struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
aaaf1635 2027int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2d48eddd 2028void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
d88443ae 2029void av_resample_close(struct AVResampleContext *c);
aaaf1635 2030
de6d9b64
FB
2031/* YUV420 format is assumed ! */
2032
2033struct ImgReSampleContext;
2034
2035typedef struct ImgReSampleContext ImgReSampleContext;
2036
2037ImgReSampleContext *img_resample_init(int output_width, int output_height,
2038 int input_width, int input_height);
ab6d194a
MN
2039
2040ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2041 int iwidth, int iheight,
2042 int topBand, int bottomBand,
1ff93ffc
TK
2043 int leftBand, int rightBand,
2044 int padtop, int padbottom,
2045 int padleft, int padright);
2046
ab6d194a 2047
de6d9b64 2048void img_resample(ImgReSampleContext *s,
da64ecc3 2049 AVPicture *output, const AVPicture *input);
de6d9b64
FB
2050
2051void img_resample_close(ImgReSampleContext *s);
2052
75917b88
DH
2053/**
2054 * Allocate memory for a picture. Call avpicture_free to free it.
2055 *
2056 * @param picture the picture to be filled in.
2057 * @param pix_fmt the format of the picture.
2058 * @param width the width of the picture.
2059 * @param height the height of the picture.
2060 * @return 0 if successful, -1 if not.
2061 */
2062int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2063
2064/* Free a picture previously allocated by avpicture_alloc. */
2065void avpicture_free(AVPicture *picture);
2066
0c1a9eda 2067int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2d1a4094 2068 int pix_fmt, int width, int height);
da64ecc3 2069int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
63167088 2070 unsigned char *dest, int dest_size);
219b06c6 2071int avpicture_get_size(int pix_fmt, int width, int height);
dab64ebc
FB
2072void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2073const char *avcodec_get_pix_fmt_name(int pix_fmt);
21adafec 2074void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
63167088 2075enum PixelFormat avcodec_get_pix_fmt(const char* name);
d07730dd 2076unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
219b06c6 2077
fab21997
FB
2078#define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2079#define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2080#define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2081#define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2082#define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2083#define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2084
2085int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2086 int has_alpha);
2087int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2088 int has_alpha, int *loss_ptr);
2089
0469baf1
FB
2090#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2091#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
da64ecc3
DH
2092int img_get_alpha_info(const AVPicture *src,
2093 int pix_fmt, int width, int height);
0469baf1 2094
219b06c6
FB
2095/* convert among pixel formats */
2096int img_convert(AVPicture *dst, int dst_pix_fmt,
da64ecc3 2097 const AVPicture *src, int pix_fmt,
219b06c6
FB
2098 int width, int height);
2099
2100/* deinterlace a picture */
da64ecc3 2101int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
de6d9b64
FB
2102 int pix_fmt, int width, int height);
2103
2104/* external high level API */
2105
2106extern AVCodec *first_avcodec;
2107
156e5023 2108/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 2109unsigned avcodec_version(void);
8bceb6af 2110/* returns LIBAVCODEC_BUILD constant */
51a49663 2111unsigned avcodec_build(void);
de6d9b64
FB
2112void avcodec_init(void);
2113
2114void register_avcodec(AVCodec *format);
2115AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 2116AVCodec *avcodec_find_encoder_by_name(const char *name);
de6d9b64
FB
2117AVCodec *avcodec_find_decoder(enum CodecID id);
2118AVCodec *avcodec_find_decoder_by_name(const char *name);
2119void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2120
1e491e29 2121void avcodec_get_context_defaults(AVCodecContext *s);
7ffbb60e 2122AVCodecContext *avcodec_alloc_context(void);
7906085f 2123void avcodec_get_frame_defaults(AVFrame *pic);
492cd3a9 2124AVFrame *avcodec_alloc_frame(void);
1e491e29 2125
492cd3a9
MN
2126int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2127void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
3a569751
MN
2128int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2129void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
0ecca7a4 2130int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
3a569751 2131enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
1e491e29 2132
5a815088
MN
2133int avcodec_thread_init(AVCodecContext *s, int thread_count);
2134void avcodec_thread_free(AVCodecContext *s);
2135int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
3a569751 2136int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
9c3d33d6
MN
2137//FIXME func typedef
2138
7a06ff14
MN
2139/**
2140 * opens / inits the AVCodecContext.
2141 * not thread save!
2142 */
de6d9b64 2143int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
7a06ff14 2144
0c1a9eda 2145int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 2146 int *frame_size_ptr,
0c1a9eda 2147 uint8_t *buf, int buf_size);
492cd3a9 2148int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 2149 int *got_picture_ptr,
0c1a9eda
ZK
2150 uint8_t *buf, int buf_size);
2151int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
917e06c8 2152 int *data_size_ptr,
0c1a9eda
ZK
2153 uint8_t *buf, int buf_size);
2154int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64 2155 const short *samples);
0c1a9eda 2156int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 2157 const AVFrame *pict);
de6d9b64
FB
2158
2159int avcodec_close(AVCodecContext *avctx);
2160
2161void avcodec_register_all(void);
a96b68b7 2162
1c2a8c7f
MN
2163void avcodec_flush_buffers(AVCodecContext *avctx);
2164
14bea432 2165/* misc usefull functions */
d8085ea7
MN
2166
2167/**
2168 * returns a single letter to describe the picture type
2169 */
2170char av_get_pict_type_char(int pict_type);
2171
14bea432
MN
2172/**
2173 * reduce a fraction.
2174 * this is usefull for framerate calculations
2175 * @param max the maximum allowed for dst_nom & dst_den
2176 * @return 1 if exact, 0 otherwise
2177 */
2178int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2179
2180/**
1f018225 2181 * rescale a 64bit integer with rounding to nearest.
14bea432
MN
2182 * a simple a*b/c isnt possible as it can overflow
2183 */
4c263142 2184int64_t av_rescale(int64_t a, int64_t b, int64_t c);
628d601b 2185
1f018225
MN
2186/**
2187 * rescale a 64bit integer with specified rounding.
2188 * a simple a*b/c isnt possible as it can overflow
2189 */
2190int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
628d601b 2191
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2192/* frame parsing */
2193typedef struct AVCodecParserContext {
2194 void *priv_data;
2195 struct AVCodecParser *parser;
2196 int64_t frame_offset; /* offset of the current frame */
2197 int64_t cur_offset; /* current offset
2198 (incremented by each av_parser_parse()) */
2199 int64_t last_frame_offset; /* offset of the last frame */
2200 /* video info */
2201 int pict_type; /* XXX: put it back in AVCodecContext */
2202 int repeat_pict; /* XXX: put it back in AVCodecContext */
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2203 int64_t pts; /* pts of the current frame */
2204 int64_t dts; /* dts of the current frame */
2205
2206 /* private data */
2207 int64_t last_pts;
2208 int64_t last_dts;
a62aecce 2209 int fetch_timestamp;
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FB
2210
2211#define AV_PARSER_PTS_NB 4
2212 int cur_frame_start_index;
2213 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2214 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2215 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
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FB
2216} AVCodecParserContext;
2217
2218typedef struct AVCodecParser {
99f06236 2219 int codec_ids[5]; /* several codec IDs are permitted */
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2220 int priv_data_size;
2221 int (*parser_init)(AVCodecParserContext *s);
2222 int (*parser_parse)(AVCodecParserContext *s,
2223 AVCodecContext *avctx,
2224 uint8_t **poutbuf, int *poutbuf_size,
2225 const uint8_t *buf, int buf_size);
2226 void (*parser_close)(AVCodecParserContext *s);
2227 struct AVCodecParser *next;
2228} AVCodecParser;
2229
2230extern AVCodecParser *av_first_parser;
2231
2232void av_register_codec_parser(AVCodecParser *parser);
2233AVCodecParserContext *av_parser_init(int codec_id);
2234int av_parser_parse(AVCodecParserContext *s,
2235 AVCodecContext *avctx,
2236 uint8_t **poutbuf, int *poutbuf_size,
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FB
2237 const uint8_t *buf, int buf_size,
2238 int64_t pts, int64_t dts);
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FB
2239void av_parser_close(AVCodecParserContext *s);
2240
2241extern AVCodecParser mpegvideo_parser;
2242extern AVCodecParser mpeg4video_parser;
c6148de2 2243extern AVCodecParser h261_parser;
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FB
2244extern AVCodecParser h263_parser;
2245extern AVCodecParser h264_parser;
8e6325b9 2246extern AVCodecParser mjpeg_parser;
99f06236 2247extern AVCodecParser pnm_parser;
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FB
2248extern AVCodecParser mpegaudio_parser;
2249extern AVCodecParser ac3_parser;
2250
544eb99c 2251/* memory */
e4eadb4b 2252void *av_malloc(unsigned int size);
18f77016 2253void *av_mallocz(unsigned int size);
8e1e6f31 2254void *av_realloc(void *ptr, unsigned int size);
544eb99c 2255void av_free(void *ptr);
8e1e6f31 2256char *av_strdup(const char *s);
81c5f887 2257void av_freep(void *ptr);
97d96aaa 2258void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
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2259/* for static data only */
2260/* call av_free_static to release all staticaly allocated tables */
628d601b 2261void av_free_static(void);
8d1f2ba5 2262void *av_mallocz_static(unsigned int size);
073c2593 2263void *av_realloc_static(void *ptr, unsigned int size);
544eb99c 2264
fc384777
MM
2265/* add by bero : in adx.c */
2266int is_adx(const unsigned char *buf,size_t bufsize);
2267
e1c2a5a0
RT
2268void img_copy(AVPicture *dst, const AVPicture *src,
2269 int pix_fmt, int width, int height);
2270
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2271/* av_log API */
2272
2273#include <stdarg.h>
2274
d8019eb5 2275#define AV_LOG_QUIET -1
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2276#define AV_LOG_ERROR 0
2277#define AV_LOG_INFO 1
2278#define AV_LOG_DEBUG 2
2279
f4bd8cf0 2280#ifdef __GNUC__
bc874dae 2281extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
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MN
2282#else
2283extern void av_log(void*, int level, const char *fmt, ...);
2284#endif
2285
bc874dae 2286extern void av_vlog(void*, int level, const char *fmt, va_list);
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2287extern int av_log_get_level(void);
2288extern void av_log_set_level(int);
bc874dae 2289extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
9b879566 2290
3a278992 2291/* endian macros */
e96682e6 2292#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
3a278992
MM
2293#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2294#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2295 (((uint8_t*)(x))[1] << 16) | \
2296 (((uint8_t*)(x))[2] << 8) | \
2297 ((uint8_t*)(x))[3])
2298#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2299#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2300 (((uint8_t*)(x))[2] << 16) | \
2301 (((uint8_t*)(x))[1] << 8) | \
2302 ((uint8_t*)(x))[0])
e96682e6 2303#endif
3a278992 2304
02d697aa
ZK
2305#ifdef __cplusplus
2306}
2307#endif
2308
a96b68b7 2309#endif /* AVCODEC_H */