implement B_DIRECT and B_SKIP macroblock types.
[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"
0fd6aea1 20#define LIBAVCODEC_BUILD 4736
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
104 /* various pcm "codecs" */
17179d2d 105 CODEC_ID_PCM_S16LE= 0x10000,
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106 CODEC_ID_PCM_S16BE,
107 CODEC_ID_PCM_U16LE,
108 CODEC_ID_PCM_U16BE,
109 CODEC_ID_PCM_S8,
110 CODEC_ID_PCM_U8,
111 CODEC_ID_PCM_MULAW,
112 CODEC_ID_PCM_ALAW,
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113
114 /* various adpcm codecs */
17179d2d 115 CODEC_ID_ADPCM_IMA_QT= 0x11000,
0147f198 116 CODEC_ID_ADPCM_IMA_WAV,
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117 CODEC_ID_ADPCM_IMA_DK3,
118 CODEC_ID_ADPCM_IMA_DK4,
2fdf638b 119 CODEC_ID_ADPCM_IMA_WS,
7d8379f2 120 CODEC_ID_ADPCM_IMA_SMJPEG,
0147f198 121 CODEC_ID_ADPCM_MS,
e2a7bb28 122 CODEC_ID_ADPCM_4XM,
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123 CODEC_ID_ADPCM_XA,
124 CODEC_ID_ADPCM_ADX,
7d8379f2 125 CODEC_ID_ADPCM_EA,
e5966052 126 CODEC_ID_ADPCM_G726,
b3bfb299 127 CODEC_ID_ADPCM_CT,
891f64b3 128
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129 /* AMR */
130 CODEC_ID_AMR_NB= 0x12000,
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131 CODEC_ID_AMR_WB,
132
b8414bbd 133 /* RealAudio codecs*/
17179d2d 134 CODEC_ID_RA_144= 0x13000,
b8414bbd 135 CODEC_ID_RA_288,
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136
137 /* various DPCM codecs */
17179d2d 138 CODEC_ID_ROQ_DPCM= 0x14000,
3ef8be2b 139 CODEC_ID_INTERPLAY_DPCM,
9937e686 140 CODEC_ID_XAN_DPCM,
d08d7142 141 CODEC_ID_SOL_DPCM,
985180a1 142
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143 CODEC_ID_MP2= 0x15000,
144 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
145 CODEC_ID_AAC,
146 CODEC_ID_MPEG4AAC,
147 CODEC_ID_AC3,
148 CODEC_ID_DTS,
149 CODEC_ID_VORBIS,
150 CODEC_ID_DVAUDIO,
151 CODEC_ID_WMAV1,
152 CODEC_ID_WMAV2,
153 CODEC_ID_MACE3,
154 CODEC_ID_MACE6,
155 CODEC_ID_VMDAUDIO,
156 CODEC_ID_SONIC,
157 CODEC_ID_SONIC_LS,
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158 CODEC_ID_FLAC,
159
17179d2d 160 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
985180a1 161 stream (only used by libavformat) */
de6d9b64 162};
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163
164/* CODEC_ID_MP3LAME is absolete */
165#define CODEC_ID_MP3LAME CODEC_ID_MP3
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166
167enum CodecType {
4a663d80 168 CODEC_TYPE_UNKNOWN = -1,
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169 CODEC_TYPE_VIDEO,
170 CODEC_TYPE_AUDIO,
985180a1 171 CODEC_TYPE_DATA,
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172};
173
64863965 174/**
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175 * Pixel format. Notes:
176 *
177 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
178 * color is put together as:
179 * (A << 24) | (R << 16) | (G << 8) | B
180 * This is stored as BGRA on little endian CPU architectures and ARGB on
181 * big endian CPUs.
182 *
183 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
184 * image data is stored in AVFrame.data[0]. The palette is transported in
185 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
186 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
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187 * also endian-specific). Note also that the individual RGB palette
188 * components stored in AVFrame.data[1] should be in the range 0..255.
189 * This is important as many custom PAL8 video codecs that were designed
190 * to run on the IBM VGA graphics adapter use 6-bit palette components.
64863965 191 */
de6d9b64 192enum PixelFormat {
cd394651 193 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
ebb177dd 194 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
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195 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
196 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
197 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
198 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
0f371e3e 199 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
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200 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
201 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
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202 PIX_FMT_RGB565, ///< always stored in cpu endianness
203 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
dab64ebc 204 PIX_FMT_GRAY8,
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205 PIX_FMT_MONOWHITE, ///< 0 is white
206 PIX_FMT_MONOBLACK, ///< 0 is black
207 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
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208 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
209 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
210 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
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211 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
212 PIX_FMT_XVMC_MPEG2_IDCT,
ebb177dd 213 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
f02be79d 214 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
dab64ebc 215 PIX_FMT_NB,
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216};
217
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218/* currently unused, may be used if 24/32 bits samples ever supported */
219enum SampleFormat {
64863965 220 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
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221};
222
de6d9b64 223/* in bytes */
bc8d1857 224#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 225
d7425f59 226/**
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227 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
228 * this is mainly needed because some optimized bitstream readers read
229 * 32 or 64 bit at once and could read over the end<br>
230 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
231 * MPEG bitstreams could cause overread and segfault
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232 */
233#define FF_INPUT_BUFFER_PADDING_SIZE 8
234
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235/* motion estimation type, EPZS by default */
236enum Motion_Est_ID {
101bea5f 237 ME_ZERO = 1,
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238 ME_FULL,
239 ME_LOG,
240 ME_PHODS,
241 ME_EPZS,
242 ME_X1
243};
244
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245enum AVRounding {
246 AV_ROUND_ZERO = 0, ///< round toward zero
247 AV_ROUND_INF = 1, ///< round away from zero
248 AV_ROUND_DOWN = 2, ///< round toward -infinity
249 AV_ROUND_UP = 3, ///< round toward +infinity
250 AV_ROUND_NEAR_INF = 5, ///< round to nearest and halfway cases away from zero
251};
252
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253typedef struct RcOverride{
254 int start_frame;
255 int end_frame;
256 int qscale; // if this is 0 then quality_factor will be used instead
257 float quality_factor;
258} RcOverride;
259
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260/* only for ME compatiblity with old apps */
261extern int motion_estimation_method;
262
4e00e76b 263#define FF_MAX_B_FRAMES 8
9dbcbd92 264
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265/* encoding support
266 these flags can be passed in AVCodecContext.flags before initing
267 Note: note not everything is supported yet
268*/
de6d9b64 269
64863965 270#define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
dba019da 271#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
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272#define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
273#define CODEC_FLAG_GMC 0x0020 ///< use GMC
ca7d05d5 274#define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
64863965 275#define CODEC_FLAG_PART 0x0080 ///< use data partitioning
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276/* parent program gurantees that the input for b-frame containing streams is not written to
277 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 278#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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279#define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
280#define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
281#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
282#define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
283#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
284#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
285#define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
d7425f59 286 of only at frame boundaries */
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287#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
288#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
3bb07d61 289#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
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290#define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
291#define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
292#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
293#define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
21e59552 294/* Fx : Flag for h263+ extra options */
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295#define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
296#define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
64863965 297#define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
f2f6134b 298#define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
1f26c6f3 299#define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
dba019da 300#define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
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301#define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
302#define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
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303#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
304#define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
baaf3f46 305#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
303e50e6 306#define CODEC_FLAG_CLOSED_GOP 0x80000000
6fc5b059 307#define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
03581772 308#define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
6fc5b059 309
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310/* Unsupported options :
311 * Syntax Arithmetic coding (SAC)
21e59552 312 * Reference Picture Selection
ba58dabc 313 * Independant Segment Decoding */
21e59552 314/* /Fx */
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315/* codec capabilities */
316
64863965 317#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
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318/**
319 * Codec uses get_buffer() for allocating buffers.
320 * direct rendering method 1
321 */
322#define CODEC_CAP_DR1 0x0002
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323/* if 'parse_only' field is true, then avcodec_parse_frame() can be
324 used */
325#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 326#define CODEC_CAP_TRUNCATED 0x0008
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327/* codec can export data for HW decoding (XvMC) */
328#define CODEC_CAP_HWACCEL 0x0010
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329/** codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data */
330#define CODEC_CAP_DELAY 0x0020
bf89e6b1 331
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332//the following defines might change, so dont expect compatibility if u use them
333#define MB_TYPE_INTRA4x4 0x0001
334#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
335#define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
336#define MB_TYPE_16x16 0x0008
337#define MB_TYPE_16x8 0x0010
338#define MB_TYPE_8x16 0x0020
339#define MB_TYPE_8x8 0x0040
340#define MB_TYPE_INTERLACED 0x0080
341#define MB_TYPE_DIRECT2 0x0100 //FIXME
342#define MB_TYPE_ACPRED 0x0200
343#define MB_TYPE_GMC 0x0400
344#define MB_TYPE_SKIP 0x0800
345#define MB_TYPE_P0L0 0x1000
346#define MB_TYPE_P1L0 0x2000
347#define MB_TYPE_P0L1 0x4000
348#define MB_TYPE_P1L1 0x8000
349#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
350#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
351#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
352#define MB_TYPE_QUANT 0x00010000
353#define MB_TYPE_CBP 0x00020000
354//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
355
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356/**
357 * Pan Scan area.
358 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
359 */
360typedef struct AVPanScan{
361 /**
362 * id.
363 * - encoding: set by user.
364 * - decoding: set by lavc
365 */
366 int id;
367
368 /**
369 * width and height in 1/16 pel
370 * - encoding: set by user.
371 * - decoding: set by lavc
372 */
373 int width;
374 int height;
375
376 /**
377 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
378 * - encoding: set by user.
379 * - decoding: set by lavc
380 */
381 int16_t position[3][2];
382}AVPanScan;
383
492cd3a9 384#define FF_COMMON_FRAME \
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385 /**\
386 * pointer to the picture planes.\
387 * this might be different from the first allocated byte\
388 * - encoding: \
389 * - decoding: \
390 */\
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391 uint8_t *data[4];\
392 int linesize[4];\
393 /**\
32db2b1d 394 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
1e491e29 395 * this isnt used by lavc unless the default get/release_buffer() is used\
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396 * - encoding: \
397 * - decoding: \
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398 */\
399 uint8_t *base[4];\
400 /**\
401 * 1 -> keyframe, 0-> not\
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402 * - encoding: set by lavc\
403 * - decoding: set by lavc\
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404 */\
405 int key_frame;\
406\
407 /**\
0da71265 408 * picture type of the frame, see ?_TYPE below.\
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409 * - encoding: set by lavc for coded_picture (and set by user for input)\
410 * - decoding: set by lavc\
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411 */\
412 int pict_type;\
413\
414 /**\
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415 * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
416 * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
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417 * - encoding: MUST be set by user\
418 * - decoding: set by lavc\
1e491e29 419 */\
be6784dc 420 int64_t pts;\
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421\
422 /**\
423 * picture number in bitstream order.\
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424 * - encoding: set by\
425 * - decoding: set by lavc\
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426 */\
427 int coded_picture_number;\
428 /**\
1e491e29 429 * picture number in display order.\
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430 * - encoding: set by\
431 * - decoding: set by lavc\
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432 */\
433 int display_picture_number;\
434\
435 /**\
158c7f05 436 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
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437 * - encoding: set by lavc for coded_picture (and set by user for input)\
438 * - decoding: set by lavc\
1e491e29 439 */\
158c7f05 440 int quality; \
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441\
442 /**\
443 * buffer age (1->was last buffer and dint change, 2->..., ...).\
158c7f05 444 * set to INT_MAX if the buffer has not been used yet \
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445 * - encoding: unused\
446 * - decoding: MUST be set by get_buffer()\
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447 */\
448 int age;\
449\
450 /**\
451 * is this picture used as reference\
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452 * - encoding: unused\
453 * - decoding: set by lavc (before get_buffer() call))\
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454 */\
455 int reference;\
456\
457 /**\
458 * QP table\
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459 * - encoding: unused\
460 * - decoding: set by lavc\
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461 */\
462 int8_t *qscale_table;\
463 /**\
464 * QP store stride\
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465 * - encoding: unused\
466 * - decoding: set by lavc\
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467 */\
468 int qstride;\
469\
470 /**\
471 * mbskip_table[mb]>=1 if MB didnt change\
472 * stride= mb_width = (width+15)>>4\
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473 * - encoding: unused\
474 * - decoding: set by lavc\
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475 */\
476 uint8_t *mbskip_table;\
477\
478 /**\
8d7ec294 479 * Motion vector table\
a4d36c11 480 * - encoding: set by user\
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481 * - decoding: set by lavc\
482 */\
483 int16_t (*motion_val[2])[2];\
484\
485 /**\
486 * Macroblock type table\
487 * mb_type_base + mb_width + 2\
a4d36c11 488 * - encoding: set by user\
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489 * - decoding: set by lavc\
490 */\
491 uint32_t *mb_type;\
492\
493 /**\
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494 * log2 of the size of the block which a single vector in motion_val represents: \
495 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
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496 * - encoding: unused\
497 * - decoding: set by lavc\
498 */\
499 uint8_t motion_subsample_log2;\
500\
501 /**\
1e491e29 502 * for some private data of the user\
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503 * - encoding: unused\
504 * - decoding: set by user\
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505 */\
506 void *opaque;\
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507\
508 /**\
509 * error\
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510 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
511 * - decoding: unused\
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512 */\
513 uint64_t error[4];\
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514\
515 /**\
516 * type of the buffer (to keep track of who has to dealloc data[*])\
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517 * - encoding: set by the one who allocs it\
518 * - decoding: set by the one who allocs it\
3db320ea 519 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
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520 */\
521 int type;\
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522 \
523 /**\
524 * when decoding, this signal how much the picture must be delayed.\
525 * extra_delay = repeat_pict / (2*fps)\
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526 * - encoding: unused\
527 * - decoding: set by lavc\
2ec23b6d 528 */\
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529 int repeat_pict;\
530 \
531 /**\
532 * \
533 */\
534 int qscale_type;\
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535 \
536 /**\
537 * The content of the picture is interlaced.\
538 * - encoding: set by user\
539 * - decoding: set by lavc (default 0)\
540 */\
541 int interlaced_frame;\
542 \
543 /**\
9dad924e 544 * if the content is interlaced, is top field displayed first.\
2744ca9a 545 * - encoding: set by user\
9dad924e 546 * - decoding: set by lavc\
2744ca9a 547 */\
9dad924e 548 int top_field_first;\
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549 \
550 /**\
551 * Pan scan.\
552 * - encoding: set by user\
553 * - decoding: set by lavc\
554 */\
555 AVPanScan *pan_scan;\
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556 \
557 /**\
558 * tell user application that palette has changed from previous frame.\
559 * - encoding: ??? (no palette-enabled encoder yet)\
560 * - decoding: set by lavc (default 0)\
561 */\
562 int palette_has_changed;\
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563 \
564 /**\
565 * Codec suggestion on buffer type if != 0\
566 * - encoding: unused\
567 * - decoding: set by lavc (before get_buffer() call))\
568 */\
569 int buffer_hints;\
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570\
571 /**\
572 * DCT coeffitients\
573 * - encoding: unused\
574 * - decoding: set by lavc\
575 */\
576 short *dct_coeff;\
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577\
578 /**\
579 * Motion referece frame index\
580 * - encoding: set by user\
581 * - decoding: set by lavc\
582 */\
583 int8_t *ref_index[2];
2ec23b6d 584
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585#define FF_QSCALE_TYPE_MPEG1 0
586#define FF_QSCALE_TYPE_MPEG2 1
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587
588#define FF_BUFFER_TYPE_INTERNAL 1
9b56edf5 589#define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
a4d36c11 590#define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
9b56edf5 591#define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
4e00e76b 592
1e491e29 593
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594#define FF_I_TYPE 1 // Intra
595#define FF_P_TYPE 2 // Predicted
596#define FF_B_TYPE 3 // Bi-dir predicted
597#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
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598#define FF_SI_TYPE 5
599#define FF_SP_TYPE 6
1e491e29 600
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601#define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
602#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
603#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
604#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
605
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606/**
607 * Audio Video Frame.
608 */
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609typedef struct AVFrame {
610 FF_COMMON_FRAME
611} AVFrame;
1e491e29 612
14bea432 613#define DEFAULT_FRAME_RATE_BASE 1001000
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614
615/**
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616 * Used by av_log
617 */
618typedef struct AVCLASS AVClass;
619struct AVCLASS {
620 const char* class_name;
621 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
622 or AVFormatContext, which begin with an AVClass.
623 Needed because av_log is in libavcodec and has no visibility
624 of AVIn/OutputFormat */
625};
626
627/**
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628 * main external api structure.
629 */
de6d9b64 630typedef struct AVCodecContext {
b71901e6 631 /**
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632 * Info on struct for av_log
633 * - set by avcodec_alloc_context
634 */
43465395 635 AVClass *av_class;
bc874dae 636 /**
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637 * the average bitrate.
638 * - encoding: set by user. unused for constant quantizer encoding
639 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
b71901e6 640 */
de6d9b64 641 int bit_rate;
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642
643 /**
64863965 644 * number of bits the bitstream is allowed to diverge from the reference.
b71901e6 645 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
64863965
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646 * - encoding: set by user. unused for constant quantizer encoding
647 * - decoding: unused
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648 */
649 int bit_rate_tolerance;
650
651 /**
64863965
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652 * CODEC_FLAG_*.
653 * - encoding: set by user.
654 * - decoding: set by user.
b71901e6 655 */
de6d9b64 656 int flags;
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657
658 /**
659 * some codecs needs additionnal format info. It is stored here
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660 * - encoding: set by user.
661 * - decoding: set by lavc. (FIXME is this ok?)
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662 */
663 int sub_id;
664
665 /**
64863965
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666 * motion estimation algorithm used for video coding.
667 * - encoding: MUST be set by user.
668 * - decoding: unused
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669 */
670 int me_method;
671
672 /**
64863965 673 * some codecs need / can use extra-data like huffman tables.
b71901e6
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674 * mjpeg: huffman tables
675 * rv10: additional flags
b704e742 676 * mpeg4: global headers (they can be in the bitstream or here)
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677 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
678 * then extradata_size to avoid prolems if its read with the bitstream reader
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679 * - encoding: set/allocated/freed by lavc.
680 * - decoding: set/allocated/freed by user.
b71901e6 681 */
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682 void *extradata;
683 int extradata_size;
684
de6d9b64 685 /* video only */
b71901e6 686 /**
14bea432 687 * frames per sec multiplied by frame_rate_base.
b71901e6 688 * for variable fps this is the precission, so if the timestamps
14bea432 689 * can be specified in msec precssion then this is 1000*frame_rate_base
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690 * - encoding: MUST be set by user
691 * - decoding: set by lavc. 0 or the frame_rate if available
b71901e6
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692 */
693 int frame_rate;
14bea432
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694
695 /**
21adafec 696 * picture width / height.
64863965 697 * - encoding: MUST be set by user.
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698 * - decoding: set by lavc.
699 * Note, for compatibility its possible to set this instead of
700 * coded_width/height before decoding
b71901e6 701 */
de6d9b64 702 int width, height;
b71901e6 703
e769f053 704#define FF_ASPECT_EXTENDED 15
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705
706 /**
64863965
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707 * the number of pictures in a group of pitures, or 0 for intra_only.
708 * - encoding: set by user.
709 * - decoding: unused
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710 */
711 int gop_size;
712
713 /**
64863965 714 * pixel format, see PIX_FMT_xxx.
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715 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
716 * conversion is in order. This only works for
717 * codecs with one supported pix_fmt, we should
718 * do something for a generic case as well.
64863965 719 * - decoding: set by lavc.
b71901e6 720 */
e4eadb4b 721 enum PixelFormat pix_fmt;
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MK
722
723 /**
724 * Frame rate emulation. If not zero lower layer (i.e. format handler)
725 * has to read frames at native frame rate.
726 * - encoding: set by user.
727 * - decoding: unused.
728 */
729 int rate_emu;
730
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731 /**
732 * if non NULL, 'draw_horiz_band' is called by the libavcodec
733 * decoder to draw an horizontal band. It improve cache usage. Not
734 * all codecs can do that. You must check the codec capabilities
735 * before
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736 * - encoding: unused
737 * - decoding: set by user.
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738 * @param height the height of the slice
739 * @param y the y position of the slice
740 * @param type 1->top field, 2->bottom field, 3->frame
741 * @param offset offset into the AVFrame.data from which the slice should be read
b71901e6 742 */
bf89e6b1 743 void (*draw_horiz_band)(struct AVCodecContext *s,
da64ecc3 744 const AVFrame *src, int offset[4],
3bb07d61 745 int y, int type, int height);
bf89e6b1 746
de6d9b64 747 /* audio only */
64863965 748 int sample_rate; ///< samples per sec
de6d9b64 749 int channels;
64863965 750 int sample_fmt; ///< sample format, currenly unused
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751
752 /* the following data should not be initialized */
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753 int frame_size; ///< in samples, initialized when calling 'init'
754 int frame_number; ///< audio or video frame number
755 int real_pict_num; ///< returns the real picture number of previous encoded frame
1e491e29 756
b71901e6 757 /**
b71901e6 758 * number of frames the decoded output will be delayed relative to
64863965
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759 * the encoded input.
760 * - encoding: set by lavc.
761 * - decoding: unused
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762 */
763 int delay;
1ff662cc 764
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765 /* - encoding parameters */
766 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
767 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
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768
769 /**
64863965
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770 * minimum quantizer.
771 * - encoding: set by user.
772 * - decoding: unused
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773 */
774 int qmin;
775
776 /**
64863965
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777 * maximum quantizer.
778 * - encoding: set by user.
779 * - decoding: unused
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780 */
781 int qmax;
782
783 /**
64863965
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784 * maximum quantizer difference etween frames.
785 * - encoding: set by user.
786 * - decoding: unused
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787 */
788 int max_qdiff;
789
790 /**
64863965 791 * maximum number of b frames between non b frames.
b71901e6 792 * note: the output will be delayed by max_b_frames+1 relative to the input
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793 * - encoding: set by user.
794 * - decoding: unused
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795 */
796 int max_b_frames;
797
798 /**
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799 * qscale factor between ip and b frames.
800 * - encoding: set by user.
801 * - decoding: unused
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802 */
803 float b_quant_factor;
804
805 /** obsolete FIXME remove */
806 int rc_strategy;
8b4c7dbc 807 int b_frame_strategy;
9dbcbd92 808
b71901e6 809 /**
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810 * hurry up amount.
811 * - encoding: unused
812 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
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813 */
814 int hurry_up;
2417652e 815
de6d9b64 816 struct AVCodec *codec;
b71901e6 817
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818 void *priv_data;
819
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820 /* unused, FIXME remove*/
821 int rtp_mode;
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J
822
823 int rtp_payload_size; /* The size of the RTP payload, the coder will */
824 /* do it's best to deliver a chunk with size */
825 /* below rtp_payload_size, the chunk will start */
826 /* with a start code on some codecs like H.263 */
827 /* This doesn't take account of any particular */
828 /* headers inside the transmited RTP payload */
81401c1f
J
829
830
831 /* The RTP callcack: This function is called */
832 /* every time the encoder as a packet to send */
833 /* Depends on the encoder if the data starts */
834 /* with a Start Code (it should) H.263 does */
a7fcb3ea 835 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number);
81401c1f 836
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837 /* statistics, used for 2-pass encoding */
838 int mv_bits;
839 int header_bits;
840 int i_tex_bits;
841 int p_tex_bits;
842 int i_count;
843 int p_count;
844 int skip_count;
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845 int misc_bits;
846
847 /**
64863965
MN
848 * number of bits used for the previously encoded frame.
849 * - encoding: set by lavc
7004ffb3 850 * - decoding: unused
b71901e6 851 */
098eefe1 852 int frame_bits;
7004ffb3 853
b71901e6 854 /**
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855 * private data of the user, can be used to carry app specific stuff.
856 * - encoding: set by user
857 * - decoding: set by user
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858 */
859 void *opaque;
860
de6d9b64 861 char codec_name[32];
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PG
862 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
863 enum CodecID codec_id; /* see CODEC_ID_xxx */
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MN
864
865 /**
866 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
867 * this is used to workaround some encoder bugs
bd5a6020 868 * - encoding: set by user, if not then the default based on codec_id will be used
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869 * - decoding: set by user, will be converted to upper case by lavc during init
870 */
871 unsigned int codec_tag;
92ba5ffb 872
b71901e6 873 /**
64863965
MN
874 * workaround bugs in encoders which sometimes cannot be detected automatically.
875 * - encoding: unused
876 * - decoding: set by user
b71901e6
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877 */
878 int workaround_bugs;
64863965 879#define FF_BUG_AUTODETECT 1 ///< autodetection
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880#define FF_BUG_OLD_MSMPEG4 2
881#define FF_BUG_XVID_ILACE 4
882#define FF_BUG_UMP4 8
883#define FF_BUG_NO_PADDING 16
3116cb14 884#define FF_BUG_AMV 32
ac0c6638 885#define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
03e93d35 886#define FF_BUG_QPEL_CHROMA 64
db794953 887#define FF_BUG_STD_QPEL 128
36df8805 888#define FF_BUG_QPEL_CHROMA2 256
c40c3482 889#define FF_BUG_DIRECT_BLOCKSIZE 512
1c6dcb0f 890#define FF_BUG_EDGE 1024
b44bdf7e 891#define FF_BUG_HPEL_CHROMA 2048
4ccde216 892#define FF_BUG_DC_CLIP 4096
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893//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
894
b71901e6 895 /**
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MN
896 * luma single coeff elimination threshold.
897 * - encoding: set by user
898 * - decoding: unused
b71901e6 899 */
1f6b6e50 900 int luma_elim_threshold;
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901
902 /**
64863965
MN
903 * chroma single coeff elimination threshold.
904 * - encoding: set by user
905 * - decoding: unused
b71901e6 906 */
1f6b6e50 907 int chroma_elim_threshold;
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908
909 /**
64863965
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910 * strictly follow the std (MPEG4, ...).
911 * - encoding: set by user
912 * - decoding: unused
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913 */
914 int strict_std_compliance;
915
916 /**
64863965 917 * qscale offset between ip and b frames.
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918 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
919 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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920 * - encoding: set by user.
921 * - decoding: unused
b71901e6
MN
922 */
923 float b_quant_offset;
924
925 /**
ce3bcaed 926 * error resilience higher values will detect more errors but may missdetect
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927 * some more or less valid parts as errors.
928 * - encoding: unused
929 * - decoding: set by user
b71901e6 930 */
1f6b6e50 931 int error_resilience;
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MN
932#define FF_ER_CAREFULL 1
933#define FF_ER_COMPLIANT 2
934#define FF_ER_AGGRESSIVE 3
935#define FF_ER_VERY_AGGRESSIVE 4
ae72cda6 936
6b72ac63 937 /**
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938 * called at the beginning of each frame to get a buffer for it.
939 * if pic.reference is set then the frame will be read later by lavc
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940 * avcodec_align_dimensions() should be used to find the required width and
941 * height, as they normally need to be rounded up to the next multiple of 16
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942 * - encoding: unused
943 * - decoding: set by lavc, user can override
b71901e6 944 */
492cd3a9 945 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
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946
947 /**
1e491e29
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948 * called to release buffers which where allocated with get_buffer.
949 * a released buffer can be reused in get_buffer()
950 * pic.data[*] must be set to NULL
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951 * - encoding: unused
952 * - decoding: set by lavc, user can override
b71901e6 953 */
492cd3a9 954 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
0fd90455 955
b71901e6 956 /**
e6a2ac34
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957 * if 1 the stream has a 1 frame delay during decoding.
958 * - encoding: set by lavc
64863965 959 * - decoding: set by lavc
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960 */
961 int has_b_frames;
b71901e6 962
64863965 963 int block_align; ///< used by some WAV based audio codecs
ce980a95 964
64863965 965 int parse_only; /* - decoding only: if true, only parsing is done
917e06c8
FB
966 (function avcodec_parse_frame()). The frame
967 data is returned. Only MPEG codecs support this now. */
ce980a95 968
b71901e6 969 /**
e4eadb4b 970 * 0-> h263 quant 1-> mpeg quant.
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971 * - encoding: set by user.
972 * - decoding: unused
b71901e6
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973 */
974 int mpeg_quant;
ce980a95 975
b71901e6 976 /**
64863965
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977 * pass1 encoding statistics output buffer.
978 * - encoding: set by lavc
979 * - decoding: unused
b71901e6 980 */
64863965 981 char *stats_out;
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MN
982
983 /**
984 * pass2 encoding statistics input buffer.
985 * concatenated stuff from stats_out of pass1 should be placed here
64863965
MN
986 * - encoding: allocated/set/freed by user
987 * - decoding: unused
b71901e6
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988 */
989 char *stats_in;
990
991 /**
64863965 992 * ratecontrol qmin qmax limiting method.
b71901e6 993 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
64863965
MN
994 * - encoding: set by user.
995 * - decoding: unused
b71901e6 996 */
ce980a95 997 float rc_qsquish;
b71901e6 998
ce980a95
MN
999 float rc_qmod_amp;
1000 int rc_qmod_freq;
b71901e6
MN
1001
1002 /**
64863965
MN
1003 * ratecontrol override, see RcOverride.
1004 * - encoding: allocated/set/freed by user.
1005 * - decoding: unused
b71901e6 1006 */
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1007 RcOverride *rc_override;
1008 int rc_override_count;
b71901e6
MN
1009
1010 /**
64863965
MN
1011 * rate control equation.
1012 * - encoding: set by user
1013 * - decoding: unused
b71901e6 1014 */
ce980a95 1015 char *rc_eq;
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1016
1017 /**
64863965
MN
1018 * maximum bitrate.
1019 * - encoding: set by user.
1020 * - decoding: unused
b71901e6 1021 */
ce980a95 1022 int rc_max_rate;
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MN
1023
1024 /**
64863965
MN
1025 * minimum bitrate.
1026 * - encoding: set by user.
1027 * - decoding: unused
b71901e6 1028 */
ce980a95 1029 int rc_min_rate;
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MN
1030
1031 /**
64863965
MN
1032 * decoder bitstream buffer size.
1033 * - encoding: set by user.
1034 * - decoding: unused
b71901e6 1035 */
ce980a95
MN
1036 int rc_buffer_size;
1037 float rc_buffer_aggressivity;
b71901e6
MN
1038
1039 /**
64863965 1040 * qscale factor between p and i frames.
a1e257b2
MN
1041 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1042 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
64863965
MN
1043 * - encoding: set by user.
1044 * - decoding: unused
b71901e6
MN
1045 */
1046 float i_quant_factor;
1047
1048 /**
64863965 1049 * qscale offset between p and i frames.
64863965
MN
1050 * - encoding: set by user.
1051 * - decoding: unused
b71901e6
MN
1052 */
1053 float i_quant_offset;
1054
1055 /**
64863965
MN
1056 * initial complexity for pass1 ratecontrol.
1057 * - encoding: set by user.
1058 * - decoding: unused
b71901e6 1059 */
ce980a95 1060 float rc_initial_cplx;
917e06c8 1061
b71901e6 1062 /**
64863965
MN
1063 * dct algorithm, see FF_DCT_* below.
1064 * - encoding: set by user
1065 * - decoding: unused
b71901e6 1066 */
28db7fce 1067 int dct_algo;
c7e07931 1068#define FF_DCT_AUTO 0
28db7fce 1069#define FF_DCT_FASTINT 1
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MO
1070#define FF_DCT_INT 2
1071#define FF_DCT_MMX 3
1072#define FF_DCT_MLIB 4
05c4072b 1073#define FF_DCT_ALTIVEC 5
65e4c8c9 1074#define FF_DCT_FAAN 6
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1075
1076 /**
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1077 * luminance masking (0-> disabled).
1078 * - encoding: set by user
1079 * - decoding: unused
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1080 */
1081 float lumi_masking;
1082
1083 /**
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1084 * temporary complexity masking (0-> disabled).
1085 * - encoding: set by user
1086 * - decoding: unused
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1087 */
1088 float temporal_cplx_masking;
1089
1090 /**
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1091 * spatial complexity masking (0-> disabled).
1092 * - encoding: set by user
1093 * - decoding: unused
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1094 */
1095 float spatial_cplx_masking;
1096
1097 /**
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1098 * p block masking (0-> disabled).
1099 * - encoding: set by user
1100 * - decoding: unused
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1101 */
1102 float p_masking;
15415af4 1103
5e746b99 1104 /**
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1105 * darkness masking (0-> disabled).
1106 * - encoding: set by user
1107 * - decoding: unused
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1108 */
1109 float dark_masking;
0c2dd16e 1110
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1111
1112 /* for binary compatibility */
1113 int unused;
1114
0c2dd16e 1115 /**
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1116 * idct algorithm, see FF_IDCT_* below.
1117 * - encoding: set by user
1118 * - decoding: set by user
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1119 */
1120 int idct_algo;
1121#define FF_IDCT_AUTO 0
1122#define FF_IDCT_INT 1
1123#define FF_IDCT_SIMPLE 2
1124#define FF_IDCT_SIMPLEMMX 3
1125#define FF_IDCT_LIBMPEG2MMX 4
1126#define FF_IDCT_PS2 5
1127#define FF_IDCT_MLIB 6
1128#define FF_IDCT_ARM 7
05c4072b 1129#define FF_IDCT_ALTIVEC 8
b82cdc72 1130#define FF_IDCT_SH4 9
bd7d1ea7 1131#define FF_IDCT_SIMPLEARM 10
0fa8158d 1132#define FF_IDCT_H264 11
2ad1516a 1133
144f0625 1134 /**
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1135 * slice count.
1136 * - encoding: set by lavc
1137 * - decoding: set by user (or 0)
144f0625
MN
1138 */
1139 int slice_count;
1140 /**
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1141 * slice offsets in the frame in bytes.
1142 * - encoding: set/allocated by lavc
1143 * - decoding: set/allocated by user (or NULL)
144f0625
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1144 */
1145 int *slice_offset;
1146
4d2858de 1147 /**
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1148 * error concealment flags.
1149 * - encoding: unused
1150 * - decoding: set by user
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1151 */
1152 int error_concealment;
1153#define FF_EC_GUESS_MVS 1
1154#define FF_EC_DEBLOCK 2
1155
6b72ac63 1156 /**
bec89a84 1157 * dsp_mask could be add used to disable unwanted CPU features
8350df97 1158 * CPU features (i.e. MMX, SSE. ...)
bec89a84
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1159 *
1160 * with FORCE flag you may instead enable given CPU features
1161 * (Dangerous: usable in case of misdetection, improper usage however will
1162 * result into program crash)
1163 */
1164 unsigned dsp_mask;
1165#define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1166 /* lower 16 bits - CPU features */
1167#ifdef HAVE_MMX
1168#define FF_MM_MMX 0x0001 /* standard MMX */
1169#define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1170#define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1171#define FF_MM_SSE 0x0008 /* SSE functions */
1172#define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
e42a152b 1173#define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
bec89a84 1174#endif /* HAVE_MMX */
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1175
1176 /**
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1177 * bits per sample/pixel from the demuxer (needed for huffyuv).
1178 * - encoding: set by lavc
1179 * - decoding: set by user
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1180 */
1181 int bits_per_sample;
1182
1183 /**
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1184 * prediction method (needed for huffyuv).
1185 * - encoding: set by user
1186 * - decoding: unused
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1187 */
1188 int prediction_method;
1189#define FF_PRED_LEFT 0
1190#define FF_PRED_PLANE 1
1191#define FF_PRED_MEDIAN 2
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1192
1193 /**
5ff85f1d 1194 * sample aspect ratio (0 if unknown).
1f26c6f3 1195 * numerator and denominator must be relative prime and smaller then 256 for some video standards
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1196 * - encoding: set by user.
1197 * - decoding: set by lavc.
5d3cea3a 1198 */
5ff85f1d 1199 AVRational sample_aspect_ratio;
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1200
1201 /**
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1202 * the picture in the bitstream.
1203 * - encoding: set by lavc
1204 * - decoding: set by lavc
1e491e29 1205 */
492cd3a9 1206 AVFrame *coded_frame;
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1207
1208 /**
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1209 * debug.
1210 * - encoding: set by user.
1211 * - decoding: set by user.
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1212 */
1213 int debug;
1214#define FF_DEBUG_PICT_INFO 1
1215#define FF_DEBUG_RC 2
1216#define FF_DEBUG_BITSTREAM 4
1217#define FF_DEBUG_MB_TYPE 8
1218#define FF_DEBUG_QP 16
1219#define FF_DEBUG_MV 32
8289c6fa 1220#define FF_DEBUG_DCT_COEFF 0x00000040
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1221#define FF_DEBUG_SKIP 0x00000080
1222#define FF_DEBUG_STARTCODE 0x00000100
1223#define FF_DEBUG_PTS 0x00000200
46b4feec 1224#define FF_DEBUG_ER 0x00000400
0da71265 1225#define FF_DEBUG_MMCO 0x00000800
8fc6c2b5 1226#define FF_DEBUG_BUGS 0x00001000
864119b6
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1227#define FF_DEBUG_VIS_QP 0x00002000
1228#define FF_DEBUG_VIS_MB_TYPE 0x00004000
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1229
1230 /**
0c9bbaec
WH
1231 * debug.
1232 * - encoding: set by user.
1233 * - decoding: set by user.
1234 */
1235 int debug_mv;
1236#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1237#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1238#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1239
1240 /**
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1241 * error.
1242 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1243 * - decoding: unused
140cb663
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1244 */
1245 uint64_t error[4];
17a70fde
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1246
1247 /**
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1248 * minimum MB quantizer.
1249 * - encoding: set by user.
1250 * - decoding: unused
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1251 */
1252 int mb_qmin;
1253
1254 /**
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1255 * maximum MB quantizer.
1256 * - encoding: set by user.
1257 * - decoding: unused
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1258 */
1259 int mb_qmax;
1457ab52
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1260
1261 /**
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1262 * motion estimation compare function.
1263 * - encoding: set by user.
1264 * - decoding: unused
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1265 */
1266 int me_cmp;
1267 /**
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1268 * subpixel motion estimation compare function.
1269 * - encoding: set by user.
1270 * - decoding: unused
1457ab52
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1271 */
1272 int me_sub_cmp;
1273 /**
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1274 * macroblock compare function (not supported yet).
1275 * - encoding: set by user.
1276 * - decoding: unused
1457ab52
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1277 */
1278 int mb_cmp;
622348f9
MN
1279 /**
1280 * interlaced dct compare function
1281 * - encoding: set by user.
1282 * - decoding: unused
1283 */
1284 int ildct_cmp;
1457ab52
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1285#define FF_CMP_SAD 0
1286#define FF_CMP_SSE 1
1287#define FF_CMP_SATD 2
1288#define FF_CMP_DCT 3
1289#define FF_CMP_PSNR 4
1290#define FF_CMP_BIT 5
1291#define FF_CMP_RD 6
1292#define FF_CMP_ZERO 7
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1293#define FF_CMP_VSAD 8
1294#define FF_CMP_VSSE 9
e6a2ac34 1295#define FF_CMP_NSSE 10
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1296#define FF_CMP_W53 11
1297#define FF_CMP_W97 12
0fd6aea1 1298#define FF_CMP_DCTMAX 13
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1299#define FF_CMP_CHROMA 256
1300
1301 /**
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1302 * ME diamond size & shape.
1303 * - encoding: set by user.
1304 * - decoding: unused
1457ab52
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1305 */
1306 int dia_size;
b07a5980
MN
1307
1308 /**
64863965
MN
1309 * amount of previous MV predictors (2a+1 x 2a+1 square).
1310 * - encoding: set by user.
1311 * - decoding: unused
b07a5980
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1312 */
1313 int last_predictor_count;
70ac76c0 1314
f5fb6b34 1315 /**
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1316 * pre pass for motion estimation.
1317 * - encoding: set by user.
1318 * - decoding: unused
f5fb6b34
MN
1319 */
1320 int pre_me;
b07a5980 1321
70ac76c0 1322 /**
64863965
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1323 * motion estimation pre pass compare function.
1324 * - encoding: set by user.
1325 * - decoding: unused
70ac76c0
MN
1326 */
1327 int me_pre_cmp;
826f429a 1328
70ac76c0 1329 /**
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1330 * ME pre pass diamond size & shape.
1331 * - encoding: set by user.
1332 * - decoding: unused
70ac76c0
MN
1333 */
1334 int pre_dia_size;
1335
826f429a 1336 /**
64863965
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1337 * subpel ME quality.
1338 * - encoding: set by user.
1339 * - decoding: unused
826f429a
MN
1340 */
1341 int me_subpel_quality;
1342
a33c7159 1343 /**
64863965 1344 * callback to negotiate the pixelFormat.
a33c7159
MN
1345 * @param fmt is the list of formats which are supported by the codec,
1346 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1347 * the first is allways the native one
1348 * @return the choosen format
64863965
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1349 * - encoding: unused
1350 * - decoding: set by user, if not set then the native format will always be choosen
a33c7159 1351 */
494c56d3 1352 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
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FB
1353
1354 /**
1355 * DTG active format information (additionnal aspect ratio
1356 * information only used in DVB MPEG2 transport streams). 0 if
1357 * not set.
1358 *
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1359 * - encoding: unused.
1360 * - decoding: set by decoder
e2f9490e
FB
1361 */
1362 int dtg_active_format;
1363#define FF_DTG_AFD_SAME 8
1364#define FF_DTG_AFD_4_3 9
1365#define FF_DTG_AFD_16_9 10
1366#define FF_DTG_AFD_14_9 11
1367#define FF_DTG_AFD_4_3_SP_14_9 13
1368#define FF_DTG_AFD_16_9_SP_14_9 14
1369#define FF_DTG_AFD_SP_4_3 15
1370
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MN
1371 /**
1372 * Maximum motion estimation search range in subpel units.
1373 * if 0 then no limit
1374 *
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1375 * - encoding: set by user.
1376 * - decoding: unused.
ebbcdc9a 1377 */
59e0ac8e 1378 int me_range;
ebbcdc9a 1379
65f7062d
MN
1380 /**
1381 * frame_rate_base.
1382 * for variable fps this is 1
1383 * - encoding: set by user.
1384 * - decoding: set by lavc.
1385 * @todo move this after frame_rate
1386 */
65f7062d 1387
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MN
1388 int frame_rate_base;
1389 /**
1390 * intra quantizer bias.
1391 * - encoding: set by user.
1392 * - decoding: unused
1393 */
1394 int intra_quant_bias;
1395#define FF_DEFAULT_QUANT_BIAS 999999
1396
1397 /**
1398 * inter quantizer bias.
1399 * - encoding: set by user.
1400 * - decoding: unused
1401 */
1402 int inter_quant_bias;
5cd62665
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1403
1404 /**
1405 * color table ID.
1406 * - encoding: unused.
1407 * - decoding: which clrtable should be used for 8bit RGB images
1408 * table have to be stored somewhere FIXME
1409 */
1410 int color_table_id;
1984f635 1411
d90cf87b
MN
1412 /**
1413 * internal_buffer count.
1414 * Dont touch, used by lavc default_get_buffer()
1415 */
1416 int internal_buffer_count;
1417
1418 /**
1419 * internal_buffers.
1420 * Dont touch, used by lavc default_get_buffer()
1421 */
1422 void *internal_buffer;
158c7f05
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1423
1424#define FF_LAMBDA_SHIFT 7
1425#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1426#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1427#define FF_LAMBDA_MAX (256*128-1)
1428
1429#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
3d2e8cce
MN
1430 /**
1431 * global quality for codecs which cannot change it per frame.
1432 * this should be proportional to MPEG1/2/4 qscale.
1433 * - encoding: set by user.
1434 * - decoding: unused
1435 */
1436 int global_quality;
11e659c2
MN
1437
1438#define FF_CODER_TYPE_VLC 0
1439#define FF_CODER_TYPE_AC 1
1440 /**
1441 * coder type
1442 * - encoding: set by user.
1443 * - decoding: unused
1444 */
1445 int coder_type;
1446
1447 /**
1448 * context model
1449 * - encoding: set by user.
1450 * - decoding: unused
1451 */
1452 int context_model;
3bb07d61
MN
1453
1454 /**
1455 * slice flags
1456 * - encoding: unused
1457 * - decoding: set by user.
1458 */
1459 int slice_flags;
1460#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1461#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1462#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1463
fb364ada
IK
1464 /**
1465 * XVideo Motion Acceleration
1466 * - encoding: forbidden
1467 * - decoding: set by decoder
1468 */
1469 int xvmc_acceleration;
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1470
1471 /**
1472 * macroblock decision mode
1473 * - encoding: set by user.
1474 * - decoding: unused
1475 */
1476 int mb_decision;
1477#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1478#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1479#define FF_MB_DECISION_RD 2 ///< rate distoration
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1480
1481 /**
1482 * custom intra quantization matrix
1483 * - encoding: set by user, can be NULL
1484 * - decoding: set by lavc
1485 */
1486 uint16_t *intra_matrix;
1487
1488 /**
1489 * custom inter quantization matrix
1490 * - encoding: set by user, can be NULL
1491 * - decoding: set by lavc
1492 */
1493 uint16_t *inter_matrix;
7d1c3fc1 1494
541ae140
MN
1495 /**
1496 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1497 * this is used to workaround some encoder bugs
1498 * - encoding: unused
1499 * - decoding: set by user, will be converted to upper case by lavc during init
1500 */
1501 unsigned int stream_codec_tag;
05fbd0a2
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1502
1503 /**
1504 * scene change detection threshold.
1505 * 0 is default, larger means fewer detected scene changes
1506 * - encoding: set by user.
1507 * - decoding: unused
1508 */
1509 int scenechange_threshold;
158c7f05
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1510
1511 /**
1512 * minimum lagrange multipler
1513 * - encoding: set by user.
1514 * - decoding: unused
1515 */
1516 int lmin;
1517
1518 /**
1519 * maximum lagrange multipler
1520 * - encoding: set by user.
1521 * - decoding: unused
1522 */
1523 int lmax;
2a2bbcb0
MM
1524
1525 /**
1526 * Palette control structure
1527 * - encoding: ??? (no palette-enabled encoder yet)
1528 * - decoding: set by user.
1529 */
1530 struct AVPaletteControl *palctrl;
821cb11f
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1531
1532 /**
1533 * noise reduction strength
1534 * - encoding: set by user.
1535 * - decoding: unused
1536 */
1537 int noise_reduction;
fa384dcc 1538
074c4ca7 1539 /**
e1c2a5a0
RT
1540 * called at the beginning of a frame to get cr buffer for it.
1541 * buffer type (size, hints) must be the same. lavc won't check it.
1542 * lavc will pass previous buffer in pic, function should return
1543 * same buffer or new buffer with old frame "painted" into it.
1544 * if pic.data[0] == NULL must behave like get_buffer().
074c4ca7 1545 * - encoding: unused
e1c2a5a0 1546 * - decoding: set by lavc, user can override
074c4ca7 1547 */
e1c2a5a0 1548 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
ba58dabc
MN
1549
1550 /**
1551 * number of bits which should be loaded into the rc buffer before decoding starts
1552 * - encoding: set by user.
1553 * - decoding: unused
1554 */
1555 int rc_initial_buffer_occupancy;
1556
1557 /**
1558 *
1559 * - encoding: set by user.
1560 * - decoding: unused
1561 */
1562 int inter_threshold;
1563
1564 /**
1565 * CODEC_FLAG2_*.
1566 * - encoding: set by user.
1567 * - decoding: set by user.
1568 */
1569 int flags2;
7ebfc0ea
MN
1570
1571 /**
1572 * simulates errors in the bitstream to test error concealment.
1573 * - encoding: set by user.
1574 * - decoding: unused.
1575 */
1576 int error_rate;
a1e257b2
MN
1577
1578 /**
1579 * MP3 antialias algorithm, see FF_AA_* below.
1580 * - encoding: unused
1581 * - decoding: set by user
1582 */
1583 int antialias_algo;
1584#define FF_AA_AUTO 0
1585#define FF_AA_FASTINT 1 //not implemented yet
1586#define FF_AA_INT 2
1587#define FF_AA_FLOAT 3
77ea0d4b
MN
1588 /**
1589 * Quantizer noise shaping.
1590 * - encoding: set by user
1591 * - decoding: unused
1592 */
1593 int quantizer_noise_shaping;
9c3d33d6
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1594
1595 /**
1596 * Thread count.
1597 * is used to decide how many independant tasks should be passed to execute()
1598 * - encoding: set by user
1599 * - decoding: set by user
1600 */
1601 int thread_count;
1602
1603 /**
1604 * the codec may call this to execute several independant things. it will return only after
1605 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1606 * default implementation will execute the parts serially
399cec2f 1607 * @param count the number of things to execute
9c3d33d6
MN
1608 * - encoding: set by lavc, user can override
1609 * - decoding: set by lavc, user can override
1610 */
1611 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1612
1613 /**
1614 * Thread opaque.
1615 * can be used by execute() to store some per AVCodecContext stuff.
1616 * - encoding: set by execute()
1617 * - decoding: set by execute()
1618 */
1619 void *thread_opaque;
a4d36c11
MN
1620
1621 /**
f20f8a8b
MN
1622 * Motion estimation threshold. under which no motion estimation is
1623 * performed, but instead the user specified motion vectors are used
a4d36c11
MN
1624 *
1625 * - encoding: set by user
f20f8a8b 1626 * - decoding: unused
a4d36c11 1627 */
2750b827 1628 int me_threshold;
f20f8a8b
MN
1629
1630 /**
1631 * Macroblock threshold. under which the user specified macroblock types will be used
1632 * - encoding: set by user
1633 * - decoding: unused
1634 */
1635 int mb_threshold;
bf266e19
MN
1636
1637 /**
d4c5d2ad 1638 * precision of the intra dc coefficient - 8.
bf266e19
MN
1639 * - encoding: set by user
1640 * - decoding: unused
1641 */
1642 int intra_dc_precision;
d4c5d2ad
MN
1643
1644 /**
1645 * noise vs. sse weight for the nsse comparsion function.
1646 * - encoding: set by user
1647 * - decoding: unused
1648 */
1649 int nsse_weight;
0dfd33c3
MN
1650
1651 /**
1652 * number of macroblock rows at the top which are skiped.
1653 * - encoding: unused
1654 * - decoding: set by user
1655 */
1656 int skip_top;
1657
1658 /**
1659 * number of macroblock rows at the bottom which are skiped.
1660 * - encoding: unused
1661 * - decoding: set by user
1662 */
1663 int skip_bottom;
baced9f5
MN
1664
1665 /**
1666 * profile
1667 * - encoding: set by user
1668 * - decoding: set by lavc
1669 */
1670 int profile;
1671#define FF_PROFILE_UNKNOWN -99
1672
1673 /**
1674 * level
1675 * - encoding: set by user
1676 * - decoding: set by lavc
1677 */
1678 int level;
1679#define FF_LEVEL_UNKNOWN -99
178fcca8
MN
1680
1681 /**
1682 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1683 * - encoding: unused
1684 * - decoding: set by user
1685 */
1686 int lowres;
21adafec
MN
1687
1688 /**
bbf18b21 1689 * bitsream width / height. may be different from width/height if lowres
21adafec
MN
1690 * or other things are used
1691 * - encoding: unused
1692 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1693 */
1694 int coded_width, coded_height;
bbf18b21
MN
1695
1696 /**
1697 * frame skip threshold
1698 * - encoding: set by user
1699 * - decoding: unused
1700 */
1701 int frame_skip_threshold;
1702
1703 /**
1704 * frame skip factor
1705 * - encoding: set by user
1706 * - decoding: unused
1707 */
1708 int frame_skip_factor;
0fd6aea1
MN
1709
1710 /**
1711 * frame skip exponent
1712 * - encoding: set by user
1713 * - decoding: unused
1714 */
1715 int frame_skip_exp;
1716
1717 /**
1718 * frame skip comparission function
1719 * - encoding: set by user.
1720 * - decoding: unused
1721 */
1722 int frame_skip_cmp;
de6d9b64
FB
1723} AVCodecContext;
1724
97d96aaa 1725
64863965
MN
1726/**
1727 * AVOption.
1728 */
97d96aaa
ZK
1729typedef struct AVOption {
1730 /** options' name */
1731 const char *name; /* if name is NULL, it indicates a link to next */
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1732 /** short English text help or const struct AVOption* subpointer */
1733 const char *help; // const struct AVOption* sub;
97d96aaa
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1734 /** offset to context structure where the parsed value should be stored */
1735 int offset;
1736 /** options' type */
1737 int type;
64863965
MN
1738#define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1739#define FF_OPT_TYPE_DOUBLE 2 ///< double
1740#define FF_OPT_TYPE_INT 3 ///< integer
1741#define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1742#define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
97d96aaa
ZK
1743//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1744#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1745#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1746 /** min value (min == max -> no limits) */
1747 double min;
1748 /** maximum value for double/int */
1749 double max;
1750 /** default boo [0,1]l/double/int value */
1751 double defval;
1752 /**
1753 * default string value (with optional semicolon delimited extra option-list
1754 * i.e. option1;option2;option3
1755 * defval might select other then first argument as default
1756 */
1757 const char *defstr;
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ZK
1758#define FF_OPT_MAX_DEPTH 10
1759} AVOption;
1760
64863965 1761/**
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ZK
1762 * Parse option(s) and sets fields in passed structure
1763 * @param strct structure where the parsed results will be written
1764 * @param list list with AVOptions
1765 * @param opts string with options for parsing
1766 */
1767int avoption_parse(void* strct, const AVOption* list, const char* opts);
1768
1769
1770/**
64863965
MN
1771 * AVCodec.
1772 */
de6d9b64 1773typedef struct AVCodec {
18f77016 1774 const char *name;
5d234974 1775 enum CodecType type;
9297ddd3 1776 enum CodecID id;
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FB
1777 int priv_data_size;
1778 int (*init)(AVCodecContext *);
0c1a9eda 1779 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
de6d9b64 1780 int (*close)(AVCodecContext *);
0fd90455 1781 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
0c1a9eda 1782 uint8_t *buf, int buf_size);
bf89e6b1 1783 int capabilities;
97d96aaa 1784 const AVOption *options;
de6d9b64 1785 struct AVCodec *next;
7a06ff14 1786 void (*flush)(AVCodecContext *);
b0df362b 1787 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
fcee0164 1788 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
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FB
1789} AVCodec;
1790
97d96aaa 1791/**
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MN
1792 * four components are given, that's all.
1793 * the last component is alpha
1794 */
de6d9b64 1795typedef struct AVPicture {
0c1a9eda 1796 uint8_t *data[4];
cd394651 1797 int linesize[4]; ///< number of bytes per line
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FB
1798} AVPicture;
1799
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MM
1800/**
1801 * AVPaletteControl
1802 * This structure defines a method for communicating palette changes
1803 * between and demuxer and a decoder.
1804 */
2e99641b 1805#define AVPALETTE_SIZE 1024
432d84c3 1806#define AVPALETTE_COUNT 256
ba118447
MM
1807typedef struct AVPaletteControl {
1808
1809 /* demuxer sets this to 1 to indicate the palette has changed;
1810 * decoder resets to 0 */
1811 int palette_changed;
1812
2a2bbcb0
MM
1813 /* 4-byte ARGB palette entries, stored in native byte order; note that
1814 * the individual palette components should be on a 8-bit scale; if
1815 * the palette data comes from a IBM VGA native format, the component
1816 * data is probably 6 bits in size and needs to be scaled */
2e99641b 1817 unsigned int palette[AVPALETTE_COUNT];
ba118447
MM
1818
1819} AVPaletteControl;
1820
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FB
1821extern AVCodec ac3_encoder;
1822extern AVCodec mp2_encoder;
9d36bdc9 1823extern AVCodec mp3lame_encoder;
81e0d0b4 1824extern AVCodec oggvorbis_encoder;
29d48296 1825extern AVCodec faac_encoder;
1ddadfa9 1826extern AVCodec xvid_encoder;
de6d9b64 1827extern AVCodec mpeg1video_encoder;
029911d1 1828extern AVCodec mpeg2video_encoder;
1c3990db 1829extern AVCodec h261_encoder;
de6d9b64
FB
1830extern AVCodec h263_encoder;
1831extern AVCodec h263p_encoder;
d4f5d74a 1832extern AVCodec flv_encoder;
de6d9b64 1833extern AVCodec rv10_encoder;
68b94c35 1834extern AVCodec rv20_encoder;
6faa4645 1835extern AVCodec dvvideo_encoder;
de6d9b64 1836extern AVCodec mjpeg_encoder;
b1e6b355 1837extern AVCodec ljpeg_encoder;
4eff7cf4 1838extern AVCodec png_encoder;
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MN
1839extern AVCodec ppm_encoder;
1840extern AVCodec pgm_encoder;
1841extern AVCodec pgmyuv_encoder;
1842extern AVCodec pbm_encoder;
1843extern AVCodec pam_encoder;
bf89e6b1 1844extern AVCodec mpeg4_encoder;
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MN
1845extern AVCodec msmpeg4v1_encoder;
1846extern AVCodec msmpeg4v2_encoder;
1847extern AVCodec msmpeg4v3_encoder;
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1848extern AVCodec wmv1_encoder;
1849extern AVCodec wmv2_encoder;
11f18faf 1850extern AVCodec huffyuv_encoder;
f37b9768 1851extern AVCodec ffvhuff_encoder;
0da71265 1852extern AVCodec h264_encoder;
3d2e8cce 1853extern AVCodec asv1_encoder;
9b56edf5 1854extern AVCodec asv2_encoder;
be3564ed 1855extern AVCodec vcr1_encoder;
5e20f836 1856extern AVCodec ffv1_encoder;
791e7b83 1857extern AVCodec snow_encoder;
c3bf0288 1858extern AVCodec mdec_encoder;
a273bbfb 1859extern AVCodec zlib_encoder;
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AB
1860extern AVCodec sonic_encoder;
1861extern AVCodec sonic_ls_encoder;
3b64893d 1862extern AVCodec svq1_encoder;
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1863
1864extern AVCodec h263_decoder;
c6148de2 1865extern AVCodec h261_decoder;
bf89e6b1 1866extern AVCodec mpeg4_decoder;
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1867extern AVCodec msmpeg4v1_decoder;
1868extern AVCodec msmpeg4v2_decoder;
1869extern AVCodec msmpeg4v3_decoder;
e1a9dbff 1870extern AVCodec wmv1_decoder;
0151a6f5 1871extern AVCodec wmv2_decoder;
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1872extern AVCodec mpeg1video_decoder;
1873extern AVCodec mpeg2video_decoder;
c512b303 1874extern AVCodec mpegvideo_decoder;
fb364ada 1875extern AVCodec mpeg_xvmc_decoder;
de6d9b64 1876extern AVCodec h263i_decoder;
d4f5d74a 1877extern AVCodec flv_decoder;
de6d9b64 1878extern AVCodec rv10_decoder;
68b94c35 1879extern AVCodec rv20_decoder;
be8ffec9 1880extern AVCodec svq1_decoder;
8b82a956 1881extern AVCodec svq3_decoder;
020fcc94 1882extern AVCodec dvvideo_decoder;
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1883extern AVCodec wmav1_decoder;
1884extern AVCodec wmav2_decoder;
4e66ab3b 1885extern AVCodec mjpeg_decoder;
b135d9fb 1886extern AVCodec mjpegb_decoder;
5e83dec4 1887extern AVCodec sp5x_decoder;
4eff7cf4 1888extern AVCodec png_decoder;
4b1f4f23 1889extern AVCodec mp2_decoder;
a96b68b7 1890extern AVCodec mp3_decoder;
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1891extern AVCodec mace3_decoder;
1892extern AVCodec mace6_decoder;
11f18faf 1893extern AVCodec huffyuv_decoder;
f37b9768 1894extern AVCodec ffvhuff_decoder;
3aca208a 1895extern AVCodec oggvorbis_decoder;
f70f7c6d 1896extern AVCodec cyuv_decoder;
0da71265 1897extern AVCodec h264_decoder;
deabd4fd 1898extern AVCodec indeo3_decoder;
d86053a4 1899extern AVCodec vp3_decoder;
f44ee2c3 1900extern AVCodec theora_decoder;
891f64b3 1901extern AVCodec amr_nb_decoder;
bc634f6f 1902extern AVCodec amr_nb_encoder;
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1903extern AVCodec amr_wb_encoder;
1904extern AVCodec amr_wb_decoder;
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1905extern AVCodec aac_decoder;
1906extern AVCodec mpeg4aac_decoder;
3d2e8cce 1907extern AVCodec asv1_decoder;
9b56edf5 1908extern AVCodec asv2_decoder;
be3564ed 1909extern AVCodec vcr1_decoder;
3aff069b 1910extern AVCodec cljr_decoder;
5e20f836 1911extern AVCodec ffv1_decoder;
791e7b83 1912extern AVCodec snow_decoder;
8809cfee 1913extern AVCodec fourxm_decoder;
c3bf0288 1914extern AVCodec mdec_decoder;
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MM
1915extern AVCodec roq_decoder;
1916extern AVCodec interplay_video_decoder;
9937e686 1917extern AVCodec xan_wc3_decoder;
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MM
1918extern AVCodec rpza_decoder;
1919extern AVCodec cinepak_decoder;
1920extern AVCodec msrle_decoder;
1921extern AVCodec msvideo1_decoder;
6955a882 1922extern AVCodec vqa_decoder;
4120a53a 1923extern AVCodec idcin_decoder;
1dc1ed99 1924extern AVCodec eightbps_decoder;
11e29a41 1925extern AVCodec smc_decoder;
42cad81a 1926extern AVCodec flic_decoder;
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MM
1927extern AVCodec vmdvideo_decoder;
1928extern AVCodec vmdaudio_decoder;
9a4117d5 1929extern AVCodec truemotion1_decoder;
a273bbfb
RT
1930extern AVCodec mszh_decoder;
1931extern AVCodec zlib_decoder;
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NK
1932extern AVCodec ra_144_decoder;
1933extern AVCodec ra_288_decoder;
3ef8be2b
MM
1934extern AVCodec roq_dpcm_decoder;
1935extern AVCodec interplay_dpcm_decoder;
9937e686 1936extern AVCodec xan_dpcm_decoder;
d08d7142 1937extern AVCodec sol_dpcm_decoder;
54f5fd22 1938extern AVCodec sonic_decoder;
070ed1bc 1939extern AVCodec qtrle_decoder;
ac2570a8 1940extern AVCodec flac_decoder;
9d53d58e 1941extern AVCodec tscc_decoder;
d0a0bbd2 1942extern AVCodec ulti_decoder;
d08d7142 1943extern AVCodec qdraw_decoder;
ab711b3c 1944extern AVCodec xl_decoder;
acfd8f0f 1945extern AVCodec qpeg_decoder;
de6d9b64 1946
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FB
1947/* pcm codecs */
1948#define PCM_CODEC(id, name) \
1949extern AVCodec name ## _decoder; \
f11d3f23 1950extern AVCodec name ## _encoder
a96b68b7
FB
1951
1952PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1953PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1954PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1955PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1956PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1957PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1958PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1959PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1960
0147f198
FR
1961/* adpcm codecs */
1962
1963PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1964PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
9937e686
MM
1965PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1966PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2fdf638b 1967PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
7d8379f2 1968PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
0147f198 1969PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
4b465299 1970PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
fc384777
MM
1971PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1972PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
7d8379f2 1973PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
e5966052 1974PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
b3bfb299 1975PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
0147f198 1976
a96b68b7
FB
1977#undef PCM_CODEC
1978
1979/* dummy raw video codec */
63167088
RS
1980extern AVCodec rawvideo_encoder;
1981extern AVCodec rawvideo_decoder;
de6d9b64
FB
1982
1983/* the following codecs use external GPL libs */
de6d9b64 1984extern AVCodec ac3_decoder;
23c99253 1985extern AVCodec dts_decoder;
de6d9b64
FB
1986
1987/* resample.c */
1988
1989struct ReSampleContext;
aaaf1635 1990struct AVResampleContext;
de6d9b64
FB
1991
1992typedef struct ReSampleContext ReSampleContext;
1993
1994ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1995 int output_rate, int input_rate);
1996int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1997void audio_resample_close(ReSampleContext *s);
1998
6e225de2 1999struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
aaaf1635 2000int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2d48eddd 2001void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
d88443ae 2002void av_resample_close(struct AVResampleContext *c);
aaaf1635 2003
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FB
2004/* YUV420 format is assumed ! */
2005
2006struct ImgReSampleContext;
2007
2008typedef struct ImgReSampleContext ImgReSampleContext;
2009
2010ImgReSampleContext *img_resample_init(int output_width, int output_height,
2011 int input_width, int input_height);
ab6d194a
MN
2012
2013ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2014 int iwidth, int iheight,
2015 int topBand, int bottomBand,
1ff93ffc
TK
2016 int leftBand, int rightBand,
2017 int padtop, int padbottom,
2018 int padleft, int padright);
2019
ab6d194a 2020
de6d9b64 2021void img_resample(ImgReSampleContext *s,
da64ecc3 2022 AVPicture *output, const AVPicture *input);
de6d9b64
FB
2023
2024void img_resample_close(ImgReSampleContext *s);
2025
75917b88
DH
2026/**
2027 * Allocate memory for a picture. Call avpicture_free to free it.
2028 *
2029 * @param picture the picture to be filled in.
2030 * @param pix_fmt the format of the picture.
2031 * @param width the width of the picture.
2032 * @param height the height of the picture.
2033 * @return 0 if successful, -1 if not.
2034 */
2035int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2036
2037/* Free a picture previously allocated by avpicture_alloc. */
2038void avpicture_free(AVPicture *picture);
2039
0c1a9eda 2040int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2d1a4094 2041 int pix_fmt, int width, int height);
da64ecc3 2042int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
63167088 2043 unsigned char *dest, int dest_size);
219b06c6 2044int avpicture_get_size(int pix_fmt, int width, int height);
dab64ebc
FB
2045void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2046const char *avcodec_get_pix_fmt_name(int pix_fmt);
21adafec 2047void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
63167088 2048enum PixelFormat avcodec_get_pix_fmt(const char* name);
d07730dd 2049unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
219b06c6 2050
fab21997
FB
2051#define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2052#define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2053#define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2054#define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2055#define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2056#define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2057
2058int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2059 int has_alpha);
2060int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2061 int has_alpha, int *loss_ptr);
2062
0469baf1
FB
2063#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2064#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
da64ecc3
DH
2065int img_get_alpha_info(const AVPicture *src,
2066 int pix_fmt, int width, int height);
0469baf1 2067
219b06c6
FB
2068/* convert among pixel formats */
2069int img_convert(AVPicture *dst, int dst_pix_fmt,
da64ecc3 2070 const AVPicture *src, int pix_fmt,
219b06c6
FB
2071 int width, int height);
2072
2073/* deinterlace a picture */
da64ecc3 2074int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
de6d9b64
FB
2075 int pix_fmt, int width, int height);
2076
2077/* external high level API */
2078
2079extern AVCodec *first_avcodec;
2080
156e5023 2081/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 2082unsigned avcodec_version(void);
8bceb6af 2083/* returns LIBAVCODEC_BUILD constant */
51a49663 2084unsigned avcodec_build(void);
de6d9b64
FB
2085void avcodec_init(void);
2086
2087void register_avcodec(AVCodec *format);
2088AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 2089AVCodec *avcodec_find_encoder_by_name(const char *name);
de6d9b64
FB
2090AVCodec *avcodec_find_decoder(enum CodecID id);
2091AVCodec *avcodec_find_decoder_by_name(const char *name);
2092void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2093
1e491e29 2094void avcodec_get_context_defaults(AVCodecContext *s);
7ffbb60e 2095AVCodecContext *avcodec_alloc_context(void);
7906085f 2096void avcodec_get_frame_defaults(AVFrame *pic);
492cd3a9 2097AVFrame *avcodec_alloc_frame(void);
1e491e29 2098
492cd3a9
MN
2099int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2100void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
3a569751
MN
2101int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2102void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2103enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
1e491e29 2104
5a815088
MN
2105int avcodec_thread_init(AVCodecContext *s, int thread_count);
2106void avcodec_thread_free(AVCodecContext *s);
2107int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
3a569751 2108int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
9c3d33d6
MN
2109//FIXME func typedef
2110
7a06ff14
MN
2111/**
2112 * opens / inits the AVCodecContext.
2113 * not thread save!
2114 */
de6d9b64 2115int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
7a06ff14 2116
0c1a9eda 2117int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 2118 int *frame_size_ptr,
0c1a9eda 2119 uint8_t *buf, int buf_size);
492cd3a9 2120int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 2121 int *got_picture_ptr,
0c1a9eda
ZK
2122 uint8_t *buf, int buf_size);
2123int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
917e06c8 2124 int *data_size_ptr,
0c1a9eda
ZK
2125 uint8_t *buf, int buf_size);
2126int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64 2127 const short *samples);
0c1a9eda 2128int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 2129 const AVFrame *pict);
de6d9b64
FB
2130
2131int avcodec_close(AVCodecContext *avctx);
2132
2133void avcodec_register_all(void);
a96b68b7 2134
1c2a8c7f
MN
2135void avcodec_flush_buffers(AVCodecContext *avctx);
2136
14bea432 2137/* misc usefull functions */
d8085ea7
MN
2138
2139/**
2140 * returns a single letter to describe the picture type
2141 */
2142char av_get_pict_type_char(int pict_type);
2143
14bea432
MN
2144/**
2145 * reduce a fraction.
2146 * this is usefull for framerate calculations
2147 * @param max the maximum allowed for dst_nom & dst_den
2148 * @return 1 if exact, 0 otherwise
2149 */
2150int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2151
2152/**
1f018225 2153 * rescale a 64bit integer with rounding to nearest.
14bea432
MN
2154 * a simple a*b/c isnt possible as it can overflow
2155 */
4c263142 2156int64_t av_rescale(int64_t a, int64_t b, int64_t c);
628d601b 2157
1f018225
MN
2158/**
2159 * rescale a 64bit integer with specified rounding.
2160 * a simple a*b/c isnt possible as it can overflow
2161 */
2162int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
628d601b 2163
8424cf50
FB
2164/* frame parsing */
2165typedef struct AVCodecParserContext {
2166 void *priv_data;
2167 struct AVCodecParser *parser;
2168 int64_t frame_offset; /* offset of the current frame */
2169 int64_t cur_offset; /* current offset
2170 (incremented by each av_parser_parse()) */
2171 int64_t last_frame_offset; /* offset of the last frame */
2172 /* video info */
2173 int pict_type; /* XXX: put it back in AVCodecContext */
2174 int repeat_pict; /* XXX: put it back in AVCodecContext */
b84f2a35
FB
2175 int64_t pts; /* pts of the current frame */
2176 int64_t dts; /* dts of the current frame */
2177
2178 /* private data */
2179 int64_t last_pts;
2180 int64_t last_dts;
a62aecce 2181 int fetch_timestamp;
b84f2a35
FB
2182
2183#define AV_PARSER_PTS_NB 4
2184 int cur_frame_start_index;
2185 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2186 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2187 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
8424cf50
FB
2188} AVCodecParserContext;
2189
2190typedef struct AVCodecParser {
99f06236 2191 int codec_ids[5]; /* several codec IDs are permitted */
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FB
2192 int priv_data_size;
2193 int (*parser_init)(AVCodecParserContext *s);
2194 int (*parser_parse)(AVCodecParserContext *s,
2195 AVCodecContext *avctx,
2196 uint8_t **poutbuf, int *poutbuf_size,
2197 const uint8_t *buf, int buf_size);
2198 void (*parser_close)(AVCodecParserContext *s);
2199 struct AVCodecParser *next;
2200} AVCodecParser;
2201
2202extern AVCodecParser *av_first_parser;
2203
2204void av_register_codec_parser(AVCodecParser *parser);
2205AVCodecParserContext *av_parser_init(int codec_id);
2206int av_parser_parse(AVCodecParserContext *s,
2207 AVCodecContext *avctx,
2208 uint8_t **poutbuf, int *poutbuf_size,
b84f2a35
FB
2209 const uint8_t *buf, int buf_size,
2210 int64_t pts, int64_t dts);
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FB
2211void av_parser_close(AVCodecParserContext *s);
2212
2213extern AVCodecParser mpegvideo_parser;
2214extern AVCodecParser mpeg4video_parser;
c6148de2 2215extern AVCodecParser h261_parser;
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FB
2216extern AVCodecParser h263_parser;
2217extern AVCodecParser h264_parser;
8e6325b9 2218extern AVCodecParser mjpeg_parser;
99f06236 2219extern AVCodecParser pnm_parser;
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FB
2220extern AVCodecParser mpegaudio_parser;
2221extern AVCodecParser ac3_parser;
2222
544eb99c 2223/* memory */
e4eadb4b 2224void *av_malloc(unsigned int size);
18f77016 2225void *av_mallocz(unsigned int size);
8e1e6f31 2226void *av_realloc(void *ptr, unsigned int size);
544eb99c 2227void av_free(void *ptr);
8e1e6f31 2228char *av_strdup(const char *s);
81c5f887 2229void av_freep(void *ptr);
97d96aaa 2230void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
855ea723
ZK
2231/* for static data only */
2232/* call av_free_static to release all staticaly allocated tables */
628d601b 2233void av_free_static(void);
8d1f2ba5 2234void *av_mallocz_static(unsigned int size);
073c2593 2235void *av_realloc_static(void *ptr, unsigned int size);
544eb99c 2236
fc384777
MM
2237/* add by bero : in adx.c */
2238int is_adx(const unsigned char *buf,size_t bufsize);
2239
e1c2a5a0
RT
2240void img_copy(AVPicture *dst, const AVPicture *src,
2241 int pix_fmt, int width, int height);
2242
9b879566
MB
2243/* av_log API */
2244
2245#include <stdarg.h>
2246
d8019eb5 2247#define AV_LOG_QUIET -1
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2248#define AV_LOG_ERROR 0
2249#define AV_LOG_INFO 1
2250#define AV_LOG_DEBUG 2
2251
f4bd8cf0 2252#ifdef __GNUC__
bc874dae 2253extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
f4bd8cf0
MN
2254#else
2255extern void av_log(void*, int level, const char *fmt, ...);
2256#endif
2257
bc874dae 2258extern void av_vlog(void*, int level, const char *fmt, va_list);
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2259extern int av_log_get_level(void);
2260extern void av_log_set_level(int);
bc874dae 2261extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
9b879566 2262
3a278992 2263/* endian macros */
e96682e6 2264#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
3a278992
MM
2265#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2266#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2267 (((uint8_t*)(x))[1] << 16) | \
2268 (((uint8_t*)(x))[2] << 8) | \
2269 ((uint8_t*)(x))[3])
2270#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2271#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2272 (((uint8_t*)(x))[2] << 16) | \
2273 (((uint8_t*)(x))[1] << 8) | \
2274 ((uint8_t*)(x))[0])
e96682e6 2275#endif
3a278992 2276
02d697aa
ZK
2277#ifdef __cplusplus
2278}
2279#endif
2280
a96b68b7 2281#endif /* AVCODEC_H */