consistent use of types patch by (D Richard Felker III <dalias at aerifal dot cx>)
[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"
6d45cb72 20#define LIBAVCODEC_BUILD 4721
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_MP2,
dcedf586 42 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
81e0d0b4 43 CODEC_ID_VORBIS,
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44 CODEC_ID_AC3,
45 CODEC_ID_MJPEG,
b135d9fb 46 CODEC_ID_MJPEGB,
b1e6b355 47 CODEC_ID_LJPEG,
5e83dec4 48 CODEC_ID_SP5X,
bf89e6b1 49 CODEC_ID_MPEG4,
de6d9b64 50 CODEC_ID_RAWVIDEO,
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51 CODEC_ID_MSMPEG4V1,
52 CODEC_ID_MSMPEG4V2,
53 CODEC_ID_MSMPEG4V3,
e1a9dbff 54 CODEC_ID_WMV1,
b50eef3a 55 CODEC_ID_WMV2,
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56 CODEC_ID_H263P,
57 CODEC_ID_H263I,
d4f5d74a 58 CODEC_ID_FLV1,
be8ffec9 59 CODEC_ID_SVQ1,
8b82a956 60 CODEC_ID_SVQ3,
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61 CODEC_ID_DVVIDEO,
62 CODEC_ID_DVAUDIO,
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63 CODEC_ID_WMAV1,
64 CODEC_ID_WMAV2,
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65 CODEC_ID_MACE3,
66 CODEC_ID_MACE6,
11f18faf 67 CODEC_ID_HUFFYUV,
f70f7c6d 68 CODEC_ID_CYUV,
0da71265 69 CODEC_ID_H264,
deabd4fd 70 CODEC_ID_INDEO3,
d86053a4 71 CODEC_ID_VP3,
f44ee2c3 72 CODEC_ID_THEORA,
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73 CODEC_ID_AAC,
74 CODEC_ID_MPEG4AAC,
3d2e8cce 75 CODEC_ID_ASV1,
9b56edf5 76 CODEC_ID_ASV2,
5e20f836 77 CODEC_ID_FFV1,
e2a7bb28 78 CODEC_ID_4XM,
be3564ed 79 CODEC_ID_VCR1,
3aff069b 80 CODEC_ID_CLJR,
c3bf0288 81 CODEC_ID_MDEC,
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82 CODEC_ID_ROQ,
83 CODEC_ID_INTERPLAY_VIDEO,
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84 CODEC_ID_XAN_WC3,
85 CODEC_ID_XAN_WC4,
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86 CODEC_ID_RPZA,
87 CODEC_ID_CINEPAK,
88 CODEC_ID_WS_VQA,
89 CODEC_ID_MSRLE,
90 CODEC_ID_MSVIDEO1,
4120a53a 91 CODEC_ID_IDCIN,
1dc1ed99 92 CODEC_ID_8BPS,
11e29a41 93 CODEC_ID_SMC,
42cad81a 94 CODEC_ID_FLIC,
9a4117d5 95 CODEC_ID_TRUEMOTION1,
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96 CODEC_ID_VMDVIDEO,
97 CODEC_ID_VMDAUDIO,
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98 CODEC_ID_MSZH,
99 CODEC_ID_ZLIB,
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100 CODEC_ID_SONIC,
101 CODEC_ID_SONIC_LS,
070ed1bc 102 CODEC_ID_QTRLE,
791e7b83 103 CODEC_ID_SNOW,
9d53d58e 104 CODEC_ID_TSCC,
d0a0bbd2 105 CODEC_ID_ULTI,
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106
107 /* various pcm "codecs" */
108 CODEC_ID_PCM_S16LE,
109 CODEC_ID_PCM_S16BE,
110 CODEC_ID_PCM_U16LE,
111 CODEC_ID_PCM_U16BE,
112 CODEC_ID_PCM_S8,
113 CODEC_ID_PCM_U8,
114 CODEC_ID_PCM_MULAW,
115 CODEC_ID_PCM_ALAW,
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116
117 /* various adpcm codecs */
118 CODEC_ID_ADPCM_IMA_QT,
119 CODEC_ID_ADPCM_IMA_WAV,
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120 CODEC_ID_ADPCM_IMA_DK3,
121 CODEC_ID_ADPCM_IMA_DK4,
2fdf638b 122 CODEC_ID_ADPCM_IMA_WS,
7d8379f2 123 CODEC_ID_ADPCM_IMA_SMJPEG,
0147f198 124 CODEC_ID_ADPCM_MS,
e2a7bb28 125 CODEC_ID_ADPCM_4XM,
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126 CODEC_ID_ADPCM_XA,
127 CODEC_ID_ADPCM_ADX,
7d8379f2 128 CODEC_ID_ADPCM_EA,
e5966052 129 CODEC_ID_ADPCM_G726,
891f64b3 130
131 /* AMR */
132 CODEC_ID_AMR_NB,
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133 CODEC_ID_AMR_WB,
134
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135 /* RealAudio codecs*/
136 CODEC_ID_RA_144,
137 CODEC_ID_RA_288,
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138
139 /* various DPCM codecs */
140 CODEC_ID_ROQ_DPCM,
141 CODEC_ID_INTERPLAY_DPCM,
9937e686 142 CODEC_ID_XAN_DPCM,
985180a1 143
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144 CODEC_ID_FLAC,
145
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146 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
147 stream (only used by libavformat) */
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148
149 CODEC_ID_DTS,
1ddadfa9 150 CODEC_ID_XVID,
de6d9b64 151};
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152
153/* CODEC_ID_MP3LAME is absolete */
154#define CODEC_ID_MP3LAME CODEC_ID_MP3
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155
156enum CodecType {
4a663d80 157 CODEC_TYPE_UNKNOWN = -1,
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158 CODEC_TYPE_VIDEO,
159 CODEC_TYPE_AUDIO,
985180a1 160 CODEC_TYPE_DATA,
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161};
162
64863965 163/**
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164 * Pixel format. Notes:
165 *
166 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
167 * color is put together as:
168 * (A << 24) | (R << 16) | (G << 8) | B
169 * This is stored as BGRA on little endian CPU architectures and ARGB on
170 * big endian CPUs.
171 *
172 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
173 * image data is stored in AVFrame.data[0]. The palette is transported in
174 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
175 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
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176 * also endian-specific). Note also that the individual RGB palette
177 * components stored in AVFrame.data[1] should be in the range 0..255.
178 * This is important as many custom PAL8 video codecs that were designed
179 * to run on the IBM VGA graphics adapter use 6-bit palette components.
64863965 180 */
de6d9b64 181enum PixelFormat {
cd394651 182 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
ebb177dd 183 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
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184 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
185 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
186 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
187 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
0f371e3e 188 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
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189 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
190 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
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191 PIX_FMT_RGB565, ///< always stored in cpu endianness
192 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
dab64ebc 193 PIX_FMT_GRAY8,
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194 PIX_FMT_MONOWHITE, ///< 0 is white
195 PIX_FMT_MONOBLACK, ///< 0 is black
196 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
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197 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
198 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
199 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
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200 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
201 PIX_FMT_XVMC_MPEG2_IDCT,
ebb177dd 202 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
dab64ebc 203 PIX_FMT_NB,
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204};
205
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206/* currently unused, may be used if 24/32 bits samples ever supported */
207enum SampleFormat {
64863965 208 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
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209};
210
de6d9b64 211/* in bytes */
bc8d1857 212#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 213
d7425f59 214/**
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215 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
216 * this is mainly needed because some optimized bitstream readers read
217 * 32 or 64 bit at once and could read over the end<br>
218 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
219 * MPEG bitstreams could cause overread and segfault
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220 */
221#define FF_INPUT_BUFFER_PADDING_SIZE 8
222
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223/* motion estimation type, EPZS by default */
224enum Motion_Est_ID {
101bea5f 225 ME_ZERO = 1,
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226 ME_FULL,
227 ME_LOG,
228 ME_PHODS,
229 ME_EPZS,
230 ME_X1
231};
232
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233typedef struct RcOverride{
234 int start_frame;
235 int end_frame;
236 int qscale; // if this is 0 then quality_factor will be used instead
237 float quality_factor;
238} RcOverride;
239
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240/* only for ME compatiblity with old apps */
241extern int motion_estimation_method;
242
4e00e76b 243#define FF_MAX_B_FRAMES 8
9dbcbd92 244
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245/* encoding support
246 these flags can be passed in AVCodecContext.flags before initing
247 Note: note not everything is supported yet
248*/
de6d9b64 249
64863965 250#define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
dba019da 251#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
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252#define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
253#define CODEC_FLAG_GMC 0x0020 ///< use GMC
ca7d05d5 254#define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
64863965 255#define CODEC_FLAG_PART 0x0080 ///< use data partitioning
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256/* parent program gurantees that the input for b-frame containing streams is not written to
257 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 258#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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259#define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
260#define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
261#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
262#define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
263#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
264#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
265#define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
d7425f59 266 of only at frame boundaries */
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267#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
268#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
3bb07d61 269#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
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270#define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
271#define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
272#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
273#define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
21e59552 274/* Fx : Flag for h263+ extra options */
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275#define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
276#define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
64863965 277#define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
f2f6134b 278#define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
1f26c6f3 279#define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
dba019da 280#define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
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281#define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
282#define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
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283#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
284#define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
baaf3f46 285#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
303e50e6 286#define CODEC_FLAG_CLOSED_GOP 0x80000000
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287#define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
288
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289/* Unsupported options :
290 * Syntax Arithmetic coding (SAC)
21e59552 291 * Reference Picture Selection
ba58dabc 292 * Independant Segment Decoding */
21e59552 293/* /Fx */
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294/* codec capabilities */
295
64863965 296#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
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297/**
298 * Codec uses get_buffer() for allocating buffers.
299 * direct rendering method 1
300 */
301#define CODEC_CAP_DR1 0x0002
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302/* if 'parse_only' field is true, then avcodec_parse_frame() can be
303 used */
304#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 305#define CODEC_CAP_TRUNCATED 0x0008
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306/* codec can export data for HW decoding (XvMC) */
307#define CODEC_CAP_HWACCEL 0x0010
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308/** codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data */
309#define CODEC_CAP_DELAY 0x0020
bf89e6b1 310
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311//the following defines might change, so dont expect compatibility if u use them
312#define MB_TYPE_INTRA4x4 0x0001
313#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
314#define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
315#define MB_TYPE_16x16 0x0008
316#define MB_TYPE_16x8 0x0010
317#define MB_TYPE_8x16 0x0020
318#define MB_TYPE_8x8 0x0040
319#define MB_TYPE_INTERLACED 0x0080
320#define MB_TYPE_DIRECT2 0x0100 //FIXME
321#define MB_TYPE_ACPRED 0x0200
322#define MB_TYPE_GMC 0x0400
323#define MB_TYPE_SKIP 0x0800
324#define MB_TYPE_P0L0 0x1000
325#define MB_TYPE_P1L0 0x2000
326#define MB_TYPE_P0L1 0x4000
327#define MB_TYPE_P1L1 0x8000
328#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
329#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
330#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
331#define MB_TYPE_QUANT 0x00010000
332#define MB_TYPE_CBP 0x00020000
333//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
334
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335/**
336 * Pan Scan area.
337 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
338 */
339typedef struct AVPanScan{
340 /**
341 * id.
342 * - encoding: set by user.
343 * - decoding: set by lavc
344 */
345 int id;
346
347 /**
348 * width and height in 1/16 pel
349 * - encoding: set by user.
350 * - decoding: set by lavc
351 */
352 int width;
353 int height;
354
355 /**
356 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
357 * - encoding: set by user.
358 * - decoding: set by lavc
359 */
360 int16_t position[3][2];
361}AVPanScan;
362
492cd3a9 363#define FF_COMMON_FRAME \
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364 /**\
365 * pointer to the picture planes.\
366 * this might be different from the first allocated byte\
367 * - encoding: \
368 * - decoding: \
369 */\
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370 uint8_t *data[4];\
371 int linesize[4];\
372 /**\
32db2b1d 373 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
1e491e29 374 * this isnt used by lavc unless the default get/release_buffer() is used\
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375 * - encoding: \
376 * - decoding: \
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377 */\
378 uint8_t *base[4];\
379 /**\
380 * 1 -> keyframe, 0-> not\
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381 * - encoding: set by lavc\
382 * - decoding: set by lavc\
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383 */\
384 int key_frame;\
385\
386 /**\
0da71265 387 * picture type of the frame, see ?_TYPE below.\
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388 * - encoding: set by lavc for coded_picture (and set by user for input)\
389 * - decoding: set by lavc\
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390 */\
391 int pict_type;\
392\
393 /**\
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394 * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
395 * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
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396 * - encoding: MUST be set by user\
397 * - decoding: set by lavc\
1e491e29 398 */\
be6784dc 399 int64_t pts;\
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400\
401 /**\
402 * picture number in bitstream order.\
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403 * - encoding: set by\
404 * - decoding: set by lavc\
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405 */\
406 int coded_picture_number;\
407 /**\
1e491e29 408 * picture number in display order.\
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409 * - encoding: set by\
410 * - decoding: set by lavc\
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411 */\
412 int display_picture_number;\
413\
414 /**\
158c7f05 415 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
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416 * - encoding: set by lavc for coded_picture (and set by user for input)\
417 * - decoding: set by lavc\
1e491e29 418 */\
158c7f05 419 int quality; \
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420\
421 /**\
422 * buffer age (1->was last buffer and dint change, 2->..., ...).\
158c7f05 423 * set to INT_MAX if the buffer has not been used yet \
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424 * - encoding: unused\
425 * - decoding: MUST be set by get_buffer()\
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426 */\
427 int age;\
428\
429 /**\
430 * is this picture used as reference\
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431 * - encoding: unused\
432 * - decoding: set by lavc (before get_buffer() call))\
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433 */\
434 int reference;\
435\
436 /**\
437 * QP table\
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438 * - encoding: unused\
439 * - decoding: set by lavc\
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440 */\
441 int8_t *qscale_table;\
442 /**\
443 * QP store stride\
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444 * - encoding: unused\
445 * - decoding: set by lavc\
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446 */\
447 int qstride;\
448\
449 /**\
450 * mbskip_table[mb]>=1 if MB didnt change\
451 * stride= mb_width = (width+15)>>4\
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452 * - encoding: unused\
453 * - decoding: set by lavc\
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454 */\
455 uint8_t *mbskip_table;\
456\
457 /**\
8d7ec294 458 * Motion vector table\
a4d36c11 459 * - encoding: set by user\
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460 * - decoding: set by lavc\
461 */\
462 int16_t (*motion_val[2])[2];\
463\
464 /**\
465 * Macroblock type table\
466 * mb_type_base + mb_width + 2\
a4d36c11 467 * - encoding: set by user\
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468 * - decoding: set by lavc\
469 */\
470 uint32_t *mb_type;\
471\
472 /**\
473 * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
474 * - encoding: unused\
475 * - decoding: set by lavc\
476 */\
477 uint8_t motion_subsample_log2;\
478\
479 /**\
1e491e29 480 * for some private data of the user\
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481 * - encoding: unused\
482 * - decoding: set by user\
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483 */\
484 void *opaque;\
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485\
486 /**\
487 * error\
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488 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
489 * - decoding: unused\
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490 */\
491 uint64_t error[4];\
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492\
493 /**\
494 * type of the buffer (to keep track of who has to dealloc data[*])\
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495 * - encoding: set by the one who allocs it\
496 * - decoding: set by the one who allocs it\
3db320ea 497 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
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498 */\
499 int type;\
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500 \
501 /**\
502 * when decoding, this signal how much the picture must be delayed.\
503 * extra_delay = repeat_pict / (2*fps)\
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504 * - encoding: unused\
505 * - decoding: set by lavc\
2ec23b6d 506 */\
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507 int repeat_pict;\
508 \
509 /**\
510 * \
511 */\
512 int qscale_type;\
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513 \
514 /**\
515 * The content of the picture is interlaced.\
516 * - encoding: set by user\
517 * - decoding: set by lavc (default 0)\
518 */\
519 int interlaced_frame;\
520 \
521 /**\
9dad924e 522 * if the content is interlaced, is top field displayed first.\
2744ca9a 523 * - encoding: set by user\
9dad924e 524 * - decoding: set by lavc\
2744ca9a 525 */\
9dad924e 526 int top_field_first;\
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527 \
528 /**\
529 * Pan scan.\
530 * - encoding: set by user\
531 * - decoding: set by lavc\
532 */\
533 AVPanScan *pan_scan;\
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534 \
535 /**\
536 * tell user application that palette has changed from previous frame.\
537 * - encoding: ??? (no palette-enabled encoder yet)\
538 * - decoding: set by lavc (default 0)\
539 */\
540 int palette_has_changed;\
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541 \
542 /**\
543 * Codec suggestion on buffer type if != 0\
544 * - encoding: unused\
545 * - decoding: set by lavc (before get_buffer() call))\
546 */\
547 int buffer_hints;\
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548\
549 /**\
550 * DCT coeffitients\
551 * - encoding: unused\
552 * - decoding: set by lavc\
553 */\
554 short *dct_coeff;\
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555\
556 /**\
557 * Motion referece frame index\
558 * - encoding: set by user\
559 * - decoding: set by lavc\
560 */\
561 int8_t *ref_index[2];
2ec23b6d 562
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563#define FF_QSCALE_TYPE_MPEG1 0
564#define FF_QSCALE_TYPE_MPEG2 1
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565
566#define FF_BUFFER_TYPE_INTERNAL 1
9b56edf5 567#define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
a4d36c11 568#define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
9b56edf5 569#define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
4e00e76b 570
1e491e29 571
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572#define FF_I_TYPE 1 // Intra
573#define FF_P_TYPE 2 // Predicted
574#define FF_B_TYPE 3 // Bi-dir predicted
575#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
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576#define FF_SI_TYPE 5
577#define FF_SP_TYPE 6
1e491e29 578
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579#define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
580#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
581#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
582#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
583
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584/**
585 * Audio Video Frame.
586 */
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587typedef struct AVFrame {
588 FF_COMMON_FRAME
589} AVFrame;
1e491e29 590
14bea432 591#define DEFAULT_FRAME_RATE_BASE 1001000
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592
593/**
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594 * Used by av_log
595 */
596typedef struct AVCLASS AVClass;
597struct AVCLASS {
598 const char* class_name;
599 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
600 or AVFormatContext, which begin with an AVClass.
601 Needed because av_log is in libavcodec and has no visibility
602 of AVIn/OutputFormat */
603};
604
605/**
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606 * main external api structure.
607 */
de6d9b64 608typedef struct AVCodecContext {
b71901e6 609 /**
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610 * Info on struct for av_log
611 * - set by avcodec_alloc_context
612 */
43465395 613 AVClass *av_class;
bc874dae 614 /**
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615 * the average bitrate.
616 * - encoding: set by user. unused for constant quantizer encoding
617 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
b71901e6 618 */
de6d9b64 619 int bit_rate;
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620
621 /**
64863965 622 * number of bits the bitstream is allowed to diverge from the reference.
b71901e6 623 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
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624 * - encoding: set by user. unused for constant quantizer encoding
625 * - decoding: unused
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626 */
627 int bit_rate_tolerance;
628
629 /**
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630 * CODEC_FLAG_*.
631 * - encoding: set by user.
632 * - decoding: set by user.
b71901e6 633 */
de6d9b64 634 int flags;
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635
636 /**
637 * some codecs needs additionnal format info. It is stored here
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638 * - encoding: set by user.
639 * - decoding: set by lavc. (FIXME is this ok?)
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640 */
641 int sub_id;
642
643 /**
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644 * motion estimation algorithm used for video coding.
645 * - encoding: MUST be set by user.
646 * - decoding: unused
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647 */
648 int me_method;
649
650 /**
64863965 651 * some codecs need / can use extra-data like huffman tables.
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652 * mjpeg: huffman tables
653 * rv10: additional flags
b704e742 654 * mpeg4: global headers (they can be in the bitstream or here)
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655 * - encoding: set/allocated/freed by lavc.
656 * - decoding: set/allocated/freed by user.
b71901e6 657 */
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658 void *extradata;
659 int extradata_size;
660
de6d9b64 661 /* video only */
b71901e6 662 /**
14bea432 663 * frames per sec multiplied by frame_rate_base.
b71901e6 664 * for variable fps this is the precission, so if the timestamps
14bea432 665 * can be specified in msec precssion then this is 1000*frame_rate_base
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666 * - encoding: MUST be set by user
667 * - decoding: set by lavc. 0 or the frame_rate if available
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668 */
669 int frame_rate;
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670
671 /**
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672 * width / height.
673 * - encoding: MUST be set by user.
95831f48 674 * - decoding: set by user if known, codec should override / dynamically change if needed
b71901e6 675 */
de6d9b64 676 int width, height;
b71901e6 677
e769f053 678#define FF_ASPECT_EXTENDED 15
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679
680 /**
64863965
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681 * the number of pictures in a group of pitures, or 0 for intra_only.
682 * - encoding: set by user.
683 * - decoding: unused
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684 */
685 int gop_size;
686
687 /**
64863965 688 * pixel format, see PIX_FMT_xxx.
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689 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
690 * conversion is in order. This only works for
691 * codecs with one supported pix_fmt, we should
692 * do something for a generic case as well.
64863965 693 * - decoding: set by lavc.
b71901e6 694 */
e4eadb4b 695 enum PixelFormat pix_fmt;
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696
697 /**
698 * Frame rate emulation. If not zero lower layer (i.e. format handler)
699 * has to read frames at native frame rate.
700 * - encoding: set by user.
701 * - decoding: unused.
702 */
703 int rate_emu;
704
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705 /**
706 * if non NULL, 'draw_horiz_band' is called by the libavcodec
707 * decoder to draw an horizontal band. It improve cache usage. Not
708 * all codecs can do that. You must check the codec capabilities
709 * before
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710 * - encoding: unused
711 * - decoding: set by user.
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712 * @param height the height of the slice
713 * @param y the y position of the slice
714 * @param type 1->top field, 2->bottom field, 3->frame
715 * @param offset offset into the AVFrame.data from which the slice should be read
b71901e6 716 */
bf89e6b1 717 void (*draw_horiz_band)(struct AVCodecContext *s,
da64ecc3 718 const AVFrame *src, int offset[4],
3bb07d61 719 int y, int type, int height);
bf89e6b1 720
de6d9b64 721 /* audio only */
64863965 722 int sample_rate; ///< samples per sec
de6d9b64 723 int channels;
64863965 724 int sample_fmt; ///< sample format, currenly unused
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725
726 /* the following data should not be initialized */
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727 int frame_size; ///< in samples, initialized when calling 'init'
728 int frame_number; ///< audio or video frame number
729 int real_pict_num; ///< returns the real picture number of previous encoded frame
1e491e29 730
b71901e6 731 /**
b71901e6 732 * number of frames the decoded output will be delayed relative to
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733 * the encoded input.
734 * - encoding: set by lavc.
735 * - decoding: unused
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736 */
737 int delay;
1ff662cc 738
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739 /* - encoding parameters */
740 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
741 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
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742
743 /**
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744 * minimum quantizer.
745 * - encoding: set by user.
746 * - decoding: unused
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747 */
748 int qmin;
749
750 /**
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751 * maximum quantizer.
752 * - encoding: set by user.
753 * - decoding: unused
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754 */
755 int qmax;
756
757 /**
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758 * maximum quantizer difference etween frames.
759 * - encoding: set by user.
760 * - decoding: unused
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761 */
762 int max_qdiff;
763
764 /**
64863965 765 * maximum number of b frames between non b frames.
b71901e6 766 * note: the output will be delayed by max_b_frames+1 relative to the input
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767 * - encoding: set by user.
768 * - decoding: unused
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769 */
770 int max_b_frames;
771
772 /**
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773 * qscale factor between ip and b frames.
774 * - encoding: set by user.
775 * - decoding: unused
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776 */
777 float b_quant_factor;
778
779 /** obsolete FIXME remove */
780 int rc_strategy;
8b4c7dbc 781 int b_frame_strategy;
9dbcbd92 782
b71901e6 783 /**
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784 * hurry up amount.
785 * - encoding: unused
786 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
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787 */
788 int hurry_up;
2417652e 789
de6d9b64 790 struct AVCodec *codec;
b71901e6 791
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792 void *priv_data;
793
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794 /* unused, FIXME remove*/
795 int rtp_mode;
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796
797 int rtp_payload_size; /* The size of the RTP payload, the coder will */
798 /* do it's best to deliver a chunk with size */
799 /* below rtp_payload_size, the chunk will start */
800 /* with a start code on some codecs like H.263 */
801 /* This doesn't take account of any particular */
802 /* headers inside the transmited RTP payload */
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803
804
805 /* The RTP callcack: This function is called */
806 /* every time the encoder as a packet to send */
807 /* Depends on the encoder if the data starts */
808 /* with a Start Code (it should) H.263 does */
a7fcb3ea 809 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number);
81401c1f 810
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811 /* statistics, used for 2-pass encoding */
812 int mv_bits;
813 int header_bits;
814 int i_tex_bits;
815 int p_tex_bits;
816 int i_count;
817 int p_count;
818 int skip_count;
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819 int misc_bits;
820
821 /**
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822 * number of bits used for the previously encoded frame.
823 * - encoding: set by lavc
7004ffb3 824 * - decoding: unused
b71901e6 825 */
098eefe1 826 int frame_bits;
7004ffb3 827
b71901e6 828 /**
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829 * private data of the user, can be used to carry app specific stuff.
830 * - encoding: set by user
831 * - decoding: set by user
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832 */
833 void *opaque;
834
de6d9b64 835 char codec_name[32];
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836 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
837 enum CodecID codec_id; /* see CODEC_ID_xxx */
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838
839 /**
840 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
841 * this is used to workaround some encoder bugs
bd5a6020 842 * - encoding: set by user, if not then the default based on codec_id will be used
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843 * - decoding: set by user, will be converted to upper case by lavc during init
844 */
845 unsigned int codec_tag;
92ba5ffb 846
b71901e6 847 /**
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848 * workaround bugs in encoders which sometimes cannot be detected automatically.
849 * - encoding: unused
850 * - decoding: set by user
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851 */
852 int workaround_bugs;
64863965 853#define FF_BUG_AUTODETECT 1 ///< autodetection
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854#define FF_BUG_OLD_MSMPEG4 2
855#define FF_BUG_XVID_ILACE 4
856#define FF_BUG_UMP4 8
857#define FF_BUG_NO_PADDING 16
3116cb14 858#define FF_BUG_AMV 32
ac0c6638 859#define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
03e93d35 860#define FF_BUG_QPEL_CHROMA 64
db794953 861#define FF_BUG_STD_QPEL 128
36df8805 862#define FF_BUG_QPEL_CHROMA2 256
c40c3482 863#define FF_BUG_DIRECT_BLOCKSIZE 512
1c6dcb0f 864#define FF_BUG_EDGE 1024
b44bdf7e 865#define FF_BUG_HPEL_CHROMA 2048
4ccde216 866#define FF_BUG_DC_CLIP 4096
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867//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
868
b71901e6 869 /**
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870 * luma single coeff elimination threshold.
871 * - encoding: set by user
872 * - decoding: unused
b71901e6 873 */
1f6b6e50 874 int luma_elim_threshold;
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875
876 /**
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877 * chroma single coeff elimination threshold.
878 * - encoding: set by user
879 * - decoding: unused
b71901e6 880 */
1f6b6e50 881 int chroma_elim_threshold;
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882
883 /**
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884 * strictly follow the std (MPEG4, ...).
885 * - encoding: set by user
886 * - decoding: unused
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887 */
888 int strict_std_compliance;
889
890 /**
64863965 891 * qscale offset between ip and b frames.
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892 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
893 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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894 * - encoding: set by user.
895 * - decoding: unused
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896 */
897 float b_quant_offset;
898
899 /**
ce3bcaed 900 * error resilience higher values will detect more errors but may missdetect
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901 * some more or less valid parts as errors.
902 * - encoding: unused
903 * - decoding: set by user
b71901e6 904 */
1f6b6e50 905 int error_resilience;
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906#define FF_ER_CAREFULL 1
907#define FF_ER_COMPLIANT 2
908#define FF_ER_AGGRESSIVE 3
909#define FF_ER_VERY_AGGRESSIVE 4
ae72cda6 910
6b72ac63 911 /**
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912 * called at the beginning of each frame to get a buffer for it.
913 * if pic.reference is set then the frame will be read later by lavc
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914 * avcodec_align_dimensions() should be used to find the required width and
915 * height, as they normally need to be rounded up to the next multiple of 16
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916 * - encoding: unused
917 * - decoding: set by lavc, user can override
b71901e6 918 */
492cd3a9 919 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
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920
921 /**
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922 * called to release buffers which where allocated with get_buffer.
923 * a released buffer can be reused in get_buffer()
924 * pic.data[*] must be set to NULL
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925 * - encoding: unused
926 * - decoding: set by lavc, user can override
b71901e6 927 */
492cd3a9 928 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
0fd90455 929
b71901e6 930 /**
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931 * if 1 the stream has a 1 frame delay during decoding.
932 * - encoding: set by lavc
64863965 933 * - decoding: set by lavc
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934 */
935 int has_b_frames;
b71901e6 936
64863965 937 int block_align; ///< used by some WAV based audio codecs
ce980a95 938
64863965 939 int parse_only; /* - decoding only: if true, only parsing is done
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940 (function avcodec_parse_frame()). The frame
941 data is returned. Only MPEG codecs support this now. */
ce980a95 942
b71901e6 943 /**
e4eadb4b 944 * 0-> h263 quant 1-> mpeg quant.
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945 * - encoding: set by user.
946 * - decoding: unused
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947 */
948 int mpeg_quant;
ce980a95 949
b71901e6 950 /**
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951 * pass1 encoding statistics output buffer.
952 * - encoding: set by lavc
953 * - decoding: unused
b71901e6 954 */
64863965 955 char *stats_out;
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956
957 /**
958 * pass2 encoding statistics input buffer.
959 * concatenated stuff from stats_out of pass1 should be placed here
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960 * - encoding: allocated/set/freed by user
961 * - decoding: unused
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962 */
963 char *stats_in;
964
965 /**
64863965 966 * ratecontrol qmin qmax limiting method.
b71901e6 967 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
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968 * - encoding: set by user.
969 * - decoding: unused
b71901e6 970 */
ce980a95 971 float rc_qsquish;
b71901e6 972
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973 float rc_qmod_amp;
974 int rc_qmod_freq;
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975
976 /**
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977 * ratecontrol override, see RcOverride.
978 * - encoding: allocated/set/freed by user.
979 * - decoding: unused
b71901e6 980 */
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981 RcOverride *rc_override;
982 int rc_override_count;
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983
984 /**
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985 * rate control equation.
986 * - encoding: set by user
987 * - decoding: unused
b71901e6 988 */
ce980a95 989 char *rc_eq;
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990
991 /**
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992 * maximum bitrate.
993 * - encoding: set by user.
994 * - decoding: unused
b71901e6 995 */
ce980a95 996 int rc_max_rate;
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997
998 /**
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999 * minimum bitrate.
1000 * - encoding: set by user.
1001 * - decoding: unused
b71901e6 1002 */
ce980a95 1003 int rc_min_rate;
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1004
1005 /**
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1006 * decoder bitstream buffer size.
1007 * - encoding: set by user.
1008 * - decoding: unused
b71901e6 1009 */
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1010 int rc_buffer_size;
1011 float rc_buffer_aggressivity;
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1012
1013 /**
64863965 1014 * qscale factor between p and i frames.
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1015 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1016 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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1017 * - encoding: set by user.
1018 * - decoding: unused
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1019 */
1020 float i_quant_factor;
1021
1022 /**
64863965 1023 * qscale offset between p and i frames.
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1024 * - encoding: set by user.
1025 * - decoding: unused
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1026 */
1027 float i_quant_offset;
1028
1029 /**
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1030 * initial complexity for pass1 ratecontrol.
1031 * - encoding: set by user.
1032 * - decoding: unused
b71901e6 1033 */
ce980a95 1034 float rc_initial_cplx;
917e06c8 1035
b71901e6 1036 /**
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1037 * dct algorithm, see FF_DCT_* below.
1038 * - encoding: set by user
1039 * - decoding: unused
b71901e6 1040 */
28db7fce 1041 int dct_algo;
c7e07931 1042#define FF_DCT_AUTO 0
28db7fce 1043#define FF_DCT_FASTINT 1
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1044#define FF_DCT_INT 2
1045#define FF_DCT_MMX 3
1046#define FF_DCT_MLIB 4
05c4072b 1047#define FF_DCT_ALTIVEC 5
65e4c8c9 1048#define FF_DCT_FAAN 6
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1049
1050 /**
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1051 * luminance masking (0-> disabled).
1052 * - encoding: set by user
1053 * - decoding: unused
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1054 */
1055 float lumi_masking;
1056
1057 /**
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1058 * temporary complexity masking (0-> disabled).
1059 * - encoding: set by user
1060 * - decoding: unused
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1061 */
1062 float temporal_cplx_masking;
1063
1064 /**
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1065 * spatial complexity masking (0-> disabled).
1066 * - encoding: set by user
1067 * - decoding: unused
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1068 */
1069 float spatial_cplx_masking;
1070
1071 /**
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1072 * p block masking (0-> disabled).
1073 * - encoding: set by user
1074 * - decoding: unused
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1075 */
1076 float p_masking;
15415af4 1077
5e746b99 1078 /**
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1079 * darkness masking (0-> disabled).
1080 * - encoding: set by user
1081 * - decoding: unused
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1082 */
1083 float dark_masking;
0c2dd16e 1084
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1085
1086 /* for binary compatibility */
1087 int unused;
1088
0c2dd16e 1089 /**
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1090 * idct algorithm, see FF_IDCT_* below.
1091 * - encoding: set by user
1092 * - decoding: set by user
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1093 */
1094 int idct_algo;
1095#define FF_IDCT_AUTO 0
1096#define FF_IDCT_INT 1
1097#define FF_IDCT_SIMPLE 2
1098#define FF_IDCT_SIMPLEMMX 3
1099#define FF_IDCT_LIBMPEG2MMX 4
1100#define FF_IDCT_PS2 5
1101#define FF_IDCT_MLIB 6
1102#define FF_IDCT_ARM 7
05c4072b 1103#define FF_IDCT_ALTIVEC 8
b82cdc72 1104#define FF_IDCT_SH4 9
bd7d1ea7 1105#define FF_IDCT_SIMPLEARM 10
2ad1516a 1106
144f0625 1107 /**
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1108 * slice count.
1109 * - encoding: set by lavc
1110 * - decoding: set by user (or 0)
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1111 */
1112 int slice_count;
1113 /**
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1114 * slice offsets in the frame in bytes.
1115 * - encoding: set/allocated by lavc
1116 * - decoding: set/allocated by user (or NULL)
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1117 */
1118 int *slice_offset;
1119
4d2858de 1120 /**
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1121 * error concealment flags.
1122 * - encoding: unused
1123 * - decoding: set by user
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1124 */
1125 int error_concealment;
1126#define FF_EC_GUESS_MVS 1
1127#define FF_EC_DEBLOCK 2
1128
6b72ac63 1129 /**
bec89a84 1130 * dsp_mask could be add used to disable unwanted CPU features
8350df97 1131 * CPU features (i.e. MMX, SSE. ...)
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1132 *
1133 * with FORCE flag you may instead enable given CPU features
1134 * (Dangerous: usable in case of misdetection, improper usage however will
1135 * result into program crash)
1136 */
1137 unsigned dsp_mask;
1138#define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1139 /* lower 16 bits - CPU features */
1140#ifdef HAVE_MMX
1141#define FF_MM_MMX 0x0001 /* standard MMX */
1142#define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1143#define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1144#define FF_MM_SSE 0x0008 /* SSE functions */
1145#define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1146#endif /* HAVE_MMX */
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1147
1148 /**
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1149 * bits per sample/pixel from the demuxer (needed for huffyuv).
1150 * - encoding: set by lavc
1151 * - decoding: set by user
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1152 */
1153 int bits_per_sample;
1154
1155 /**
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1156 * prediction method (needed for huffyuv).
1157 * - encoding: set by user
1158 * - decoding: unused
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1159 */
1160 int prediction_method;
1161#define FF_PRED_LEFT 0
1162#define FF_PRED_PLANE 1
1163#define FF_PRED_MEDIAN 2
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1164
1165 /**
5ff85f1d 1166 * sample aspect ratio (0 if unknown).
1f26c6f3 1167 * numerator and denominator must be relative prime and smaller then 256 for some video standards
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1168 * - encoding: set by user.
1169 * - decoding: set by lavc.
5d3cea3a 1170 */
5ff85f1d 1171 AVRational sample_aspect_ratio;
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1172
1173 /**
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1174 * the picture in the bitstream.
1175 * - encoding: set by lavc
1176 * - decoding: set by lavc
1e491e29 1177 */
492cd3a9 1178 AVFrame *coded_frame;
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1179
1180 /**
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1181 * debug.
1182 * - encoding: set by user.
1183 * - decoding: set by user.
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1184 */
1185 int debug;
1186#define FF_DEBUG_PICT_INFO 1
1187#define FF_DEBUG_RC 2
1188#define FF_DEBUG_BITSTREAM 4
1189#define FF_DEBUG_MB_TYPE 8
1190#define FF_DEBUG_QP 16
1191#define FF_DEBUG_MV 32
8289c6fa 1192#define FF_DEBUG_DCT_COEFF 0x00000040
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1193#define FF_DEBUG_SKIP 0x00000080
1194#define FF_DEBUG_STARTCODE 0x00000100
1195#define FF_DEBUG_PTS 0x00000200
46b4feec 1196#define FF_DEBUG_ER 0x00000400
0da71265 1197#define FF_DEBUG_MMCO 0x00000800
8fc6c2b5 1198#define FF_DEBUG_BUGS 0x00001000
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1199#define FF_DEBUG_VIS_QP 0x00002000
1200#define FF_DEBUG_VIS_MB_TYPE 0x00004000
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1201
1202 /**
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1203 * debug.
1204 * - encoding: set by user.
1205 * - decoding: set by user.
1206 */
1207 int debug_mv;
1208#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1209#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1210#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1211
1212 /**
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1213 * error.
1214 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1215 * - decoding: unused
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1216 */
1217 uint64_t error[4];
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1218
1219 /**
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1220 * minimum MB quantizer.
1221 * - encoding: set by user.
1222 * - decoding: unused
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1223 */
1224 int mb_qmin;
1225
1226 /**
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1227 * maximum MB quantizer.
1228 * - encoding: set by user.
1229 * - decoding: unused
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1230 */
1231 int mb_qmax;
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1232
1233 /**
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1234 * motion estimation compare function.
1235 * - encoding: set by user.
1236 * - decoding: unused
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1237 */
1238 int me_cmp;
1239 /**
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1240 * subpixel motion estimation compare function.
1241 * - encoding: set by user.
1242 * - decoding: unused
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1243 */
1244 int me_sub_cmp;
1245 /**
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1246 * macroblock compare function (not supported yet).
1247 * - encoding: set by user.
1248 * - decoding: unused
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1249 */
1250 int mb_cmp;
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1251 /**
1252 * interlaced dct compare function
1253 * - encoding: set by user.
1254 * - decoding: unused
1255 */
1256 int ildct_cmp;
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1257#define FF_CMP_SAD 0
1258#define FF_CMP_SSE 1
1259#define FF_CMP_SATD 2
1260#define FF_CMP_DCT 3
1261#define FF_CMP_PSNR 4
1262#define FF_CMP_BIT 5
1263#define FF_CMP_RD 6
1264#define FF_CMP_ZERO 7
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1265#define FF_CMP_VSAD 8
1266#define FF_CMP_VSSE 9
e6a2ac34 1267#define FF_CMP_NSSE 10
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1268#define FF_CMP_W53 11
1269#define FF_CMP_W97 12
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1270#define FF_CMP_CHROMA 256
1271
1272 /**
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1273 * ME diamond size & shape.
1274 * - encoding: set by user.
1275 * - decoding: unused
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1276 */
1277 int dia_size;
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1278
1279 /**
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1280 * amount of previous MV predictors (2a+1 x 2a+1 square).
1281 * - encoding: set by user.
1282 * - decoding: unused
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1283 */
1284 int last_predictor_count;
70ac76c0 1285
f5fb6b34 1286 /**
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1287 * pre pass for motion estimation.
1288 * - encoding: set by user.
1289 * - decoding: unused
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1290 */
1291 int pre_me;
b07a5980 1292
70ac76c0 1293 /**
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1294 * motion estimation pre pass compare function.
1295 * - encoding: set by user.
1296 * - decoding: unused
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1297 */
1298 int me_pre_cmp;
826f429a 1299
70ac76c0 1300 /**
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1301 * ME pre pass diamond size & shape.
1302 * - encoding: set by user.
1303 * - decoding: unused
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1304 */
1305 int pre_dia_size;
1306
826f429a 1307 /**
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1308 * subpel ME quality.
1309 * - encoding: set by user.
1310 * - decoding: unused
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1311 */
1312 int me_subpel_quality;
1313
a33c7159 1314 /**
64863965 1315 * callback to negotiate the pixelFormat.
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1316 * @param fmt is the list of formats which are supported by the codec,
1317 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1318 * the first is allways the native one
1319 * @return the choosen format
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1320 * - encoding: unused
1321 * - decoding: set by user, if not set then the native format will always be choosen
a33c7159 1322 */
494c56d3 1323 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
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1324
1325 /**
1326 * DTG active format information (additionnal aspect ratio
1327 * information only used in DVB MPEG2 transport streams). 0 if
1328 * not set.
1329 *
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1330 * - encoding: unused.
1331 * - decoding: set by decoder
e2f9490e
FB
1332 */
1333 int dtg_active_format;
1334#define FF_DTG_AFD_SAME 8
1335#define FF_DTG_AFD_4_3 9
1336#define FF_DTG_AFD_16_9 10
1337#define FF_DTG_AFD_14_9 11
1338#define FF_DTG_AFD_4_3_SP_14_9 13
1339#define FF_DTG_AFD_16_9_SP_14_9 14
1340#define FF_DTG_AFD_SP_4_3 15
1341
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1342 /**
1343 * Maximum motion estimation search range in subpel units.
1344 * if 0 then no limit
1345 *
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1346 * - encoding: set by user.
1347 * - decoding: unused.
ebbcdc9a 1348 */
59e0ac8e 1349 int me_range;
ebbcdc9a 1350
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1351 /**
1352 * frame_rate_base.
1353 * for variable fps this is 1
1354 * - encoding: set by user.
1355 * - decoding: set by lavc.
1356 * @todo move this after frame_rate
1357 */
65f7062d 1358
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1359 int frame_rate_base;
1360 /**
1361 * intra quantizer bias.
1362 * - encoding: set by user.
1363 * - decoding: unused
1364 */
1365 int intra_quant_bias;
1366#define FF_DEFAULT_QUANT_BIAS 999999
1367
1368 /**
1369 * inter quantizer bias.
1370 * - encoding: set by user.
1371 * - decoding: unused
1372 */
1373 int inter_quant_bias;
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1374
1375 /**
1376 * color table ID.
1377 * - encoding: unused.
1378 * - decoding: which clrtable should be used for 8bit RGB images
1379 * table have to be stored somewhere FIXME
1380 */
1381 int color_table_id;
1984f635 1382
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1383 /**
1384 * internal_buffer count.
1385 * Dont touch, used by lavc default_get_buffer()
1386 */
1387 int internal_buffer_count;
1388
1389 /**
1390 * internal_buffers.
1391 * Dont touch, used by lavc default_get_buffer()
1392 */
1393 void *internal_buffer;
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1394
1395#define FF_LAMBDA_SHIFT 7
1396#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1397#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1398#define FF_LAMBDA_MAX (256*128-1)
1399
1400#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
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1401 /**
1402 * global quality for codecs which cannot change it per frame.
1403 * this should be proportional to MPEG1/2/4 qscale.
1404 * - encoding: set by user.
1405 * - decoding: unused
1406 */
1407 int global_quality;
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1408
1409#define FF_CODER_TYPE_VLC 0
1410#define FF_CODER_TYPE_AC 1
1411 /**
1412 * coder type
1413 * - encoding: set by user.
1414 * - decoding: unused
1415 */
1416 int coder_type;
1417
1418 /**
1419 * context model
1420 * - encoding: set by user.
1421 * - decoding: unused
1422 */
1423 int context_model;
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1424
1425 /**
1426 * slice flags
1427 * - encoding: unused
1428 * - decoding: set by user.
1429 */
1430 int slice_flags;
1431#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1432#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1433#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1434
fb364ada
IK
1435 /**
1436 * XVideo Motion Acceleration
1437 * - encoding: forbidden
1438 * - decoding: set by decoder
1439 */
1440 int xvmc_acceleration;
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1441
1442 /**
1443 * macroblock decision mode
1444 * - encoding: set by user.
1445 * - decoding: unused
1446 */
1447 int mb_decision;
1448#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1449#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1450#define FF_MB_DECISION_RD 2 ///< rate distoration
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1451
1452 /**
1453 * custom intra quantization matrix
1454 * - encoding: set by user, can be NULL
1455 * - decoding: set by lavc
1456 */
1457 uint16_t *intra_matrix;
1458
1459 /**
1460 * custom inter quantization matrix
1461 * - encoding: set by user, can be NULL
1462 * - decoding: set by lavc
1463 */
1464 uint16_t *inter_matrix;
7d1c3fc1 1465
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1466 /**
1467 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1468 * this is used to workaround some encoder bugs
1469 * - encoding: unused
1470 * - decoding: set by user, will be converted to upper case by lavc during init
1471 */
1472 unsigned int stream_codec_tag;
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1473
1474 /**
1475 * scene change detection threshold.
1476 * 0 is default, larger means fewer detected scene changes
1477 * - encoding: set by user.
1478 * - decoding: unused
1479 */
1480 int scenechange_threshold;
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1481
1482 /**
1483 * minimum lagrange multipler
1484 * - encoding: set by user.
1485 * - decoding: unused
1486 */
1487 int lmin;
1488
1489 /**
1490 * maximum lagrange multipler
1491 * - encoding: set by user.
1492 * - decoding: unused
1493 */
1494 int lmax;
2a2bbcb0
MM
1495
1496 /**
1497 * Palette control structure
1498 * - encoding: ??? (no palette-enabled encoder yet)
1499 * - decoding: set by user.
1500 */
1501 struct AVPaletteControl *palctrl;
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1502
1503 /**
1504 * noise reduction strength
1505 * - encoding: set by user.
1506 * - decoding: unused
1507 */
1508 int noise_reduction;
fa384dcc 1509
074c4ca7 1510 /**
e1c2a5a0
RT
1511 * called at the beginning of a frame to get cr buffer for it.
1512 * buffer type (size, hints) must be the same. lavc won't check it.
1513 * lavc will pass previous buffer in pic, function should return
1514 * same buffer or new buffer with old frame "painted" into it.
1515 * if pic.data[0] == NULL must behave like get_buffer().
074c4ca7 1516 * - encoding: unused
e1c2a5a0 1517 * - decoding: set by lavc, user can override
074c4ca7 1518 */
e1c2a5a0 1519 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
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1520
1521 /**
1522 * number of bits which should be loaded into the rc buffer before decoding starts
1523 * - encoding: set by user.
1524 * - decoding: unused
1525 */
1526 int rc_initial_buffer_occupancy;
1527
1528 /**
1529 *
1530 * - encoding: set by user.
1531 * - decoding: unused
1532 */
1533 int inter_threshold;
1534
1535 /**
1536 * CODEC_FLAG2_*.
1537 * - encoding: set by user.
1538 * - decoding: set by user.
1539 */
1540 int flags2;
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1541
1542 /**
1543 * simulates errors in the bitstream to test error concealment.
1544 * - encoding: set by user.
1545 * - decoding: unused.
1546 */
1547 int error_rate;
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1548
1549 /**
1550 * MP3 antialias algorithm, see FF_AA_* below.
1551 * - encoding: unused
1552 * - decoding: set by user
1553 */
1554 int antialias_algo;
1555#define FF_AA_AUTO 0
1556#define FF_AA_FASTINT 1 //not implemented yet
1557#define FF_AA_INT 2
1558#define FF_AA_FLOAT 3
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1559 /**
1560 * Quantizer noise shaping.
1561 * - encoding: set by user
1562 * - decoding: unused
1563 */
1564 int quantizer_noise_shaping;
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1565
1566 /**
1567 * Thread count.
1568 * is used to decide how many independant tasks should be passed to execute()
1569 * - encoding: set by user
1570 * - decoding: set by user
1571 */
1572 int thread_count;
1573
1574 /**
1575 * the codec may call this to execute several independant things. it will return only after
1576 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1577 * default implementation will execute the parts serially
399cec2f 1578 * @param count the number of things to execute
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1579 * - encoding: set by lavc, user can override
1580 * - decoding: set by lavc, user can override
1581 */
1582 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1583
1584 /**
1585 * Thread opaque.
1586 * can be used by execute() to store some per AVCodecContext stuff.
1587 * - encoding: set by execute()
1588 * - decoding: set by execute()
1589 */
1590 void *thread_opaque;
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1591
1592 /**
f20f8a8b
MN
1593 * Motion estimation threshold. under which no motion estimation is
1594 * performed, but instead the user specified motion vectors are used
a4d36c11
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1595 *
1596 * - encoding: set by user
f20f8a8b 1597 * - decoding: unused
a4d36c11 1598 */
2750b827 1599 int me_threshold;
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1600
1601 /**
1602 * Macroblock threshold. under which the user specified macroblock types will be used
1603 * - encoding: set by user
1604 * - decoding: unused
1605 */
1606 int mb_threshold;
bf266e19
MN
1607
1608 /**
d4c5d2ad 1609 * precision of the intra dc coefficient - 8.
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1610 * - encoding: set by user
1611 * - decoding: unused
1612 */
1613 int intra_dc_precision;
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MN
1614
1615 /**
1616 * noise vs. sse weight for the nsse comparsion function.
1617 * - encoding: set by user
1618 * - decoding: unused
1619 */
1620 int nsse_weight;
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1621
1622 /**
1623 * number of macroblock rows at the top which are skiped.
1624 * - encoding: unused
1625 * - decoding: set by user
1626 */
1627 int skip_top;
1628
1629 /**
1630 * number of macroblock rows at the bottom which are skiped.
1631 * - encoding: unused
1632 * - decoding: set by user
1633 */
1634 int skip_bottom;
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MN
1635
1636 /**
1637 * profile
1638 * - encoding: set by user
1639 * - decoding: set by lavc
1640 */
1641 int profile;
1642#define FF_PROFILE_UNKNOWN -99
1643
1644 /**
1645 * level
1646 * - encoding: set by user
1647 * - decoding: set by lavc
1648 */
1649 int level;
1650#define FF_LEVEL_UNKNOWN -99
de6d9b64
FB
1651} AVCodecContext;
1652
97d96aaa 1653
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1654/**
1655 * AVOption.
1656 */
97d96aaa
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1657typedef struct AVOption {
1658 /** options' name */
1659 const char *name; /* if name is NULL, it indicates a link to next */
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1660 /** short English text help or const struct AVOption* subpointer */
1661 const char *help; // const struct AVOption* sub;
97d96aaa
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1662 /** offset to context structure where the parsed value should be stored */
1663 int offset;
1664 /** options' type */
1665 int type;
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1666#define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1667#define FF_OPT_TYPE_DOUBLE 2 ///< double
1668#define FF_OPT_TYPE_INT 3 ///< integer
1669#define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1670#define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
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1671//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1672#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1673#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1674 /** min value (min == max -> no limits) */
1675 double min;
1676 /** maximum value for double/int */
1677 double max;
1678 /** default boo [0,1]l/double/int value */
1679 double defval;
1680 /**
1681 * default string value (with optional semicolon delimited extra option-list
1682 * i.e. option1;option2;option3
1683 * defval might select other then first argument as default
1684 */
1685 const char *defstr;
97d96aaa
ZK
1686#define FF_OPT_MAX_DEPTH 10
1687} AVOption;
1688
64863965 1689/**
bec89a84
ZK
1690 * Parse option(s) and sets fields in passed structure
1691 * @param strct structure where the parsed results will be written
1692 * @param list list with AVOptions
1693 * @param opts string with options for parsing
1694 */
1695int avoption_parse(void* strct, const AVOption* list, const char* opts);
1696
1697
1698/**
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1699 * AVCodec.
1700 */
de6d9b64 1701typedef struct AVCodec {
18f77016 1702 const char *name;
5d234974 1703 enum CodecType type;
de6d9b64
FB
1704 int id;
1705 int priv_data_size;
1706 int (*init)(AVCodecContext *);
0c1a9eda 1707 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
de6d9b64 1708 int (*close)(AVCodecContext *);
0fd90455 1709 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
0c1a9eda 1710 uint8_t *buf, int buf_size);
bf89e6b1 1711 int capabilities;
97d96aaa 1712 const AVOption *options;
de6d9b64 1713 struct AVCodec *next;
7a06ff14 1714 void (*flush)(AVCodecContext *);
b0df362b 1715 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
fcee0164 1716 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
de6d9b64
FB
1717} AVCodec;
1718
97d96aaa 1719/**
d7425f59
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1720 * four components are given, that's all.
1721 * the last component is alpha
1722 */
de6d9b64 1723typedef struct AVPicture {
0c1a9eda 1724 uint8_t *data[4];
cd394651 1725 int linesize[4]; ///< number of bytes per line
de6d9b64
FB
1726} AVPicture;
1727
ba118447
MM
1728/**
1729 * AVPaletteControl
1730 * This structure defines a method for communicating palette changes
1731 * between and demuxer and a decoder.
1732 */
2e99641b 1733#define AVPALETTE_SIZE 1024
432d84c3 1734#define AVPALETTE_COUNT 256
ba118447
MM
1735typedef struct AVPaletteControl {
1736
1737 /* demuxer sets this to 1 to indicate the palette has changed;
1738 * decoder resets to 0 */
1739 int palette_changed;
1740
2a2bbcb0
MM
1741 /* 4-byte ARGB palette entries, stored in native byte order; note that
1742 * the individual palette components should be on a 8-bit scale; if
1743 * the palette data comes from a IBM VGA native format, the component
1744 * data is probably 6 bits in size and needs to be scaled */
2e99641b 1745 unsigned int palette[AVPALETTE_COUNT];
ba118447
MM
1746
1747} AVPaletteControl;
1748
de6d9b64
FB
1749extern AVCodec ac3_encoder;
1750extern AVCodec mp2_encoder;
9d36bdc9 1751extern AVCodec mp3lame_encoder;
81e0d0b4 1752extern AVCodec oggvorbis_encoder;
29d48296 1753extern AVCodec faac_encoder;
1ddadfa9 1754extern AVCodec xvid_encoder;
de6d9b64 1755extern AVCodec mpeg1video_encoder;
029911d1 1756extern AVCodec mpeg2video_encoder;
de6d9b64
FB
1757extern AVCodec h263_encoder;
1758extern AVCodec h263p_encoder;
d4f5d74a 1759extern AVCodec flv_encoder;
de6d9b64 1760extern AVCodec rv10_encoder;
68b94c35 1761extern AVCodec rv20_encoder;
6faa4645 1762extern AVCodec dvvideo_encoder;
de6d9b64 1763extern AVCodec mjpeg_encoder;
b1e6b355 1764extern AVCodec ljpeg_encoder;
bf89e6b1 1765extern AVCodec mpeg4_encoder;
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MN
1766extern AVCodec msmpeg4v1_encoder;
1767extern AVCodec msmpeg4v2_encoder;
1768extern AVCodec msmpeg4v3_encoder;
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MN
1769extern AVCodec wmv1_encoder;
1770extern AVCodec wmv2_encoder;
11f18faf 1771extern AVCodec huffyuv_encoder;
0da71265 1772extern AVCodec h264_encoder;
3d2e8cce 1773extern AVCodec asv1_encoder;
9b56edf5 1774extern AVCodec asv2_encoder;
be3564ed 1775extern AVCodec vcr1_encoder;
5e20f836 1776extern AVCodec ffv1_encoder;
791e7b83 1777extern AVCodec snow_encoder;
c3bf0288 1778extern AVCodec mdec_encoder;
a273bbfb 1779extern AVCodec zlib_encoder;
54f5fd22
AB
1780extern AVCodec sonic_encoder;
1781extern AVCodec sonic_ls_encoder;
3b64893d 1782extern AVCodec svq1_encoder;
de6d9b64
FB
1783
1784extern AVCodec h263_decoder;
c6148de2 1785extern AVCodec h261_decoder;
bf89e6b1 1786extern AVCodec mpeg4_decoder;
84afee34
MN
1787extern AVCodec msmpeg4v1_decoder;
1788extern AVCodec msmpeg4v2_decoder;
1789extern AVCodec msmpeg4v3_decoder;
e1a9dbff 1790extern AVCodec wmv1_decoder;
0151a6f5 1791extern AVCodec wmv2_decoder;
922bc38d
MN
1792extern AVCodec mpeg1video_decoder;
1793extern AVCodec mpeg2video_decoder;
c512b303 1794extern AVCodec mpegvideo_decoder;
fb364ada 1795extern AVCodec mpeg_xvmc_decoder;
de6d9b64 1796extern AVCodec h263i_decoder;
d4f5d74a 1797extern AVCodec flv_decoder;
de6d9b64 1798extern AVCodec rv10_decoder;
68b94c35 1799extern AVCodec rv20_decoder;
be8ffec9 1800extern AVCodec svq1_decoder;
8b82a956 1801extern AVCodec svq3_decoder;
020fcc94 1802extern AVCodec dvvideo_decoder;
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1803extern AVCodec wmav1_decoder;
1804extern AVCodec wmav2_decoder;
4e66ab3b 1805extern AVCodec mjpeg_decoder;
b135d9fb 1806extern AVCodec mjpegb_decoder;
5e83dec4 1807extern AVCodec sp5x_decoder;
4b1f4f23 1808extern AVCodec mp2_decoder;
a96b68b7 1809extern AVCodec mp3_decoder;
3f95e843
FR
1810extern AVCodec mace3_decoder;
1811extern AVCodec mace6_decoder;
11f18faf 1812extern AVCodec huffyuv_decoder;
3aca208a 1813extern AVCodec oggvorbis_decoder;
f70f7c6d 1814extern AVCodec cyuv_decoder;
0da71265 1815extern AVCodec h264_decoder;
deabd4fd 1816extern AVCodec indeo3_decoder;
d86053a4 1817extern AVCodec vp3_decoder;
f44ee2c3 1818extern AVCodec theora_decoder;
891f64b3 1819extern AVCodec amr_nb_decoder;
bc634f6f 1820extern AVCodec amr_nb_encoder;
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MN
1821extern AVCodec amr_wb_encoder;
1822extern AVCodec amr_wb_decoder;
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1823extern AVCodec aac_decoder;
1824extern AVCodec mpeg4aac_decoder;
3d2e8cce 1825extern AVCodec asv1_decoder;
9b56edf5 1826extern AVCodec asv2_decoder;
be3564ed 1827extern AVCodec vcr1_decoder;
3aff069b 1828extern AVCodec cljr_decoder;
5e20f836 1829extern AVCodec ffv1_decoder;
791e7b83 1830extern AVCodec snow_decoder;
8809cfee 1831extern AVCodec fourxm_decoder;
c3bf0288 1832extern AVCodec mdec_decoder;
3ef8be2b
MM
1833extern AVCodec roq_decoder;
1834extern AVCodec interplay_video_decoder;
9937e686 1835extern AVCodec xan_wc3_decoder;
2fdf638b
MM
1836extern AVCodec rpza_decoder;
1837extern AVCodec cinepak_decoder;
1838extern AVCodec msrle_decoder;
1839extern AVCodec msvideo1_decoder;
6955a882 1840extern AVCodec vqa_decoder;
4120a53a 1841extern AVCodec idcin_decoder;
1dc1ed99 1842extern AVCodec eightbps_decoder;
11e29a41 1843extern AVCodec smc_decoder;
42cad81a 1844extern AVCodec flic_decoder;
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MM
1845extern AVCodec vmdvideo_decoder;
1846extern AVCodec vmdaudio_decoder;
9a4117d5 1847extern AVCodec truemotion1_decoder;
a273bbfb
RT
1848extern AVCodec mszh_decoder;
1849extern AVCodec zlib_decoder;
b8414bbd
NK
1850extern AVCodec ra_144_decoder;
1851extern AVCodec ra_288_decoder;
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MM
1852extern AVCodec roq_dpcm_decoder;
1853extern AVCodec interplay_dpcm_decoder;
9937e686 1854extern AVCodec xan_dpcm_decoder;
54f5fd22 1855extern AVCodec sonic_decoder;
070ed1bc 1856extern AVCodec qtrle_decoder;
ac2570a8 1857extern AVCodec flac_decoder;
9d53d58e 1858extern AVCodec tscc_decoder;
d0a0bbd2 1859extern AVCodec ulti_decoder;
de6d9b64 1860
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1861/* pcm codecs */
1862#define PCM_CODEC(id, name) \
1863extern AVCodec name ## _decoder; \
f11d3f23 1864extern AVCodec name ## _encoder
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1865
1866PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1867PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1868PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1869PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1870PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1871PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1872PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1873PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1874
0147f198
FR
1875/* adpcm codecs */
1876
1877PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1878PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
9937e686
MM
1879PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1880PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2fdf638b 1881PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
7d8379f2 1882PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
0147f198 1883PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
4b465299 1884PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
fc384777
MM
1885PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1886PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
7d8379f2 1887PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
e5966052 1888PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
0147f198 1889
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FB
1890#undef PCM_CODEC
1891
1892/* dummy raw video codec */
63167088
RS
1893extern AVCodec rawvideo_encoder;
1894extern AVCodec rawvideo_decoder;
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FB
1895
1896/* the following codecs use external GPL libs */
de6d9b64 1897extern AVCodec ac3_decoder;
23c99253 1898extern AVCodec dts_decoder;
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FB
1899
1900/* resample.c */
1901
1902struct ReSampleContext;
aaaf1635 1903struct AVResampleContext;
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1904
1905typedef struct ReSampleContext ReSampleContext;
1906
1907ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1908 int output_rate, int input_rate);
1909int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1910void audio_resample_close(ReSampleContext *s);
1911
aaaf1635
MN
1912struct AVResampleContext *av_resample_init(int out_rate, int in_rate);
1913int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2d48eddd 1914void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
d88443ae 1915void av_resample_close(struct AVResampleContext *c);
aaaf1635 1916
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1917/* YUV420 format is assumed ! */
1918
1919struct ImgReSampleContext;
1920
1921typedef struct ImgReSampleContext ImgReSampleContext;
1922
1923ImgReSampleContext *img_resample_init(int output_width, int output_height,
1924 int input_width, int input_height);
ab6d194a
MN
1925
1926ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1927 int iwidth, int iheight,
1928 int topBand, int bottomBand,
1ff93ffc
TK
1929 int leftBand, int rightBand,
1930 int padtop, int padbottom,
1931 int padleft, int padright);
1932
ab6d194a 1933
de6d9b64 1934void img_resample(ImgReSampleContext *s,
da64ecc3 1935 AVPicture *output, const AVPicture *input);
de6d9b64
FB
1936
1937void img_resample_close(ImgReSampleContext *s);
1938
75917b88
DH
1939/**
1940 * Allocate memory for a picture. Call avpicture_free to free it.
1941 *
1942 * @param picture the picture to be filled in.
1943 * @param pix_fmt the format of the picture.
1944 * @param width the width of the picture.
1945 * @param height the height of the picture.
1946 * @return 0 if successful, -1 if not.
1947 */
1948int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1949
1950/* Free a picture previously allocated by avpicture_alloc. */
1951void avpicture_free(AVPicture *picture);
1952
0c1a9eda 1953int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2d1a4094 1954 int pix_fmt, int width, int height);
da64ecc3 1955int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
63167088 1956 unsigned char *dest, int dest_size);
219b06c6 1957int avpicture_get_size(int pix_fmt, int width, int height);
dab64ebc
FB
1958void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1959const char *avcodec_get_pix_fmt_name(int pix_fmt);
63167088 1960enum PixelFormat avcodec_get_pix_fmt(const char* name);
219b06c6 1961
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1962#define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1963#define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1964#define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1965#define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1966#define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1967#define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1968
1969int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1970 int has_alpha);
1971int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1972 int has_alpha, int *loss_ptr);
1973
0469baf1
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1974#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1975#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
da64ecc3
DH
1976int img_get_alpha_info(const AVPicture *src,
1977 int pix_fmt, int width, int height);
0469baf1 1978
219b06c6
FB
1979/* convert among pixel formats */
1980int img_convert(AVPicture *dst, int dst_pix_fmt,
da64ecc3 1981 const AVPicture *src, int pix_fmt,
219b06c6
FB
1982 int width, int height);
1983
1984/* deinterlace a picture */
da64ecc3 1985int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
de6d9b64
FB
1986 int pix_fmt, int width, int height);
1987
1988/* external high level API */
1989
1990extern AVCodec *first_avcodec;
1991
156e5023 1992/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 1993unsigned avcodec_version(void);
8bceb6af 1994/* returns LIBAVCODEC_BUILD constant */
51a49663 1995unsigned avcodec_build(void);
de6d9b64
FB
1996void avcodec_init(void);
1997
1998void register_avcodec(AVCodec *format);
1999AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 2000AVCodec *avcodec_find_encoder_by_name(const char *name);
de6d9b64
FB
2001AVCodec *avcodec_find_decoder(enum CodecID id);
2002AVCodec *avcodec_find_decoder_by_name(const char *name);
2003void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2004
1e491e29 2005void avcodec_get_context_defaults(AVCodecContext *s);
7ffbb60e 2006AVCodecContext *avcodec_alloc_context(void);
7906085f 2007void avcodec_get_frame_defaults(AVFrame *pic);
492cd3a9 2008AVFrame *avcodec_alloc_frame(void);
1e491e29 2009
492cd3a9
MN
2010int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2011void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
3a569751
MN
2012int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2013void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2014enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
1e491e29 2015
5a815088
MN
2016int avcodec_thread_init(AVCodecContext *s, int thread_count);
2017void avcodec_thread_free(AVCodecContext *s);
2018int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
3a569751 2019int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
9c3d33d6
MN
2020//FIXME func typedef
2021
7a06ff14
MN
2022/**
2023 * opens / inits the AVCodecContext.
2024 * not thread save!
2025 */
de6d9b64 2026int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
7a06ff14 2027
0c1a9eda 2028int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 2029 int *frame_size_ptr,
0c1a9eda 2030 uint8_t *buf, int buf_size);
492cd3a9 2031int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 2032 int *got_picture_ptr,
0c1a9eda
ZK
2033 uint8_t *buf, int buf_size);
2034int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
917e06c8 2035 int *data_size_ptr,
0c1a9eda
ZK
2036 uint8_t *buf, int buf_size);
2037int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64 2038 const short *samples);
0c1a9eda 2039int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 2040 const AVFrame *pict);
de6d9b64
FB
2041
2042int avcodec_close(AVCodecContext *avctx);
2043
2044void avcodec_register_all(void);
a96b68b7 2045
1c2a8c7f
MN
2046void avcodec_flush_buffers(AVCodecContext *avctx);
2047
14bea432 2048/* misc usefull functions */
d8085ea7
MN
2049
2050/**
2051 * returns a single letter to describe the picture type
2052 */
2053char av_get_pict_type_char(int pict_type);
2054
14bea432
MN
2055/**
2056 * reduce a fraction.
2057 * this is usefull for framerate calculations
2058 * @param max the maximum allowed for dst_nom & dst_den
2059 * @return 1 if exact, 0 otherwise
2060 */
2061int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2062
2063/**
2064 * rescale a 64bit integer.
2065 * a simple a*b/c isnt possible as it can overflow
2066 */
4c263142 2067int64_t av_rescale(int64_t a, int64_t b, int64_t c);
628d601b 2068
628d601b 2069
e8f14793
ZK
2070/**
2071 * Interface for 0.5.0 version
2072 *
2073 * do not even think about it's usage for this moment
2074 */
2075
2076typedef struct {
64863965 2077 /// compressed size used from given memory buffer
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ZK
2078 int size;
2079 /// I/P/B frame type
2080 int frame_type;
2081} avc_enc_result_t;
2082
2083/**
2084 * Commands
2085 * order can't be changed - once it was defined
2086 */
2087typedef enum {
2088 // general commands
2089 AVC_OPEN_BY_NAME = 0xACA000,
2090 AVC_OPEN_BY_CODEC_ID,
2091 AVC_OPEN_BY_FOURCC,
2092 AVC_CLOSE,
2093
2094 AVC_FLUSH,
2095 // pin - struct { uint8_t* src, uint_t src_size }
2096 // pout - struct { AVPicture* img, consumed_bytes,
2097 AVC_DECODE,
2098 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
2099 // pout - uint_t used_from_dest_size
2100 AVC_ENCODE,
2101
2102 // query/get video commands
2103 AVC_GET_VERSION = 0xACB000,
2104 AVC_GET_WIDTH,
2105 AVC_GET_HEIGHT,
2106 AVC_GET_DELAY,
2107 AVC_GET_QUANT_TABLE,
2108 // ...
2109
2110 // query/get audio commands
2111 AVC_GET_FRAME_SIZE = 0xABC000,
2112
2113 // maybe define some simple structure which
2114 // might be passed to the user - but they can't
2115 // contain any codec specific parts and these
2116 // calls are usualy necessary only few times
2117
2118 // set video commands
2119 AVC_SET_WIDTH = 0xACD000,
2120 AVC_SET_HEIGHT,
2121
2122 // set video encoding commands
2123 AVC_SET_FRAME_RATE = 0xACD800,
2124 AVC_SET_QUALITY,
2125 AVC_SET_HURRY_UP,
2126
2127 // set audio commands
2128 AVC_SET_SAMPLE_RATE = 0xACE000,
2129 AVC_SET_CHANNELS,
2130
2131} avc_cmd_t;
2132
2133/**
2134 * \param handle allocated private structure by libavcodec
2135 * for initialization pass NULL - will be returned pout
2136 * user is supposed to know nothing about its structure
2137 * \param cmd type of operation to be performed
2138 * \param pint input parameter
2139 * \param pout output parameter
2140 *
2141 * \returns command status - eventually for query command it might return
2142 * integer resulting value
2143 */
2144int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2145
8424cf50
FB
2146/* frame parsing */
2147typedef struct AVCodecParserContext {
2148 void *priv_data;
2149 struct AVCodecParser *parser;
2150 int64_t frame_offset; /* offset of the current frame */
2151 int64_t cur_offset; /* current offset
2152 (incremented by each av_parser_parse()) */
2153 int64_t last_frame_offset; /* offset of the last frame */
2154 /* video info */
2155 int pict_type; /* XXX: put it back in AVCodecContext */
2156 int repeat_pict; /* XXX: put it back in AVCodecContext */
b84f2a35
FB
2157 int64_t pts; /* pts of the current frame */
2158 int64_t dts; /* dts of the current frame */
2159
2160 /* private data */
2161 int64_t last_pts;
2162 int64_t last_dts;
a62aecce 2163 int fetch_timestamp;
b84f2a35
FB
2164
2165#define AV_PARSER_PTS_NB 4
2166 int cur_frame_start_index;
2167 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2168 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2169 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
8424cf50
FB
2170} AVCodecParserContext;
2171
2172typedef struct AVCodecParser {
2173 int codec_ids[3]; /* several codec IDs are permitted */
2174 int priv_data_size;
2175 int (*parser_init)(AVCodecParserContext *s);
2176 int (*parser_parse)(AVCodecParserContext *s,
2177 AVCodecContext *avctx,
2178 uint8_t **poutbuf, int *poutbuf_size,
2179 const uint8_t *buf, int buf_size);
2180 void (*parser_close)(AVCodecParserContext *s);
2181 struct AVCodecParser *next;
2182} AVCodecParser;
2183
2184extern AVCodecParser *av_first_parser;
2185
2186void av_register_codec_parser(AVCodecParser *parser);
2187AVCodecParserContext *av_parser_init(int codec_id);
2188int av_parser_parse(AVCodecParserContext *s,
2189 AVCodecContext *avctx,
2190 uint8_t **poutbuf, int *poutbuf_size,
b84f2a35
FB
2191 const uint8_t *buf, int buf_size,
2192 int64_t pts, int64_t dts);
8424cf50
FB
2193void av_parser_close(AVCodecParserContext *s);
2194
2195extern AVCodecParser mpegvideo_parser;
2196extern AVCodecParser mpeg4video_parser;
c6148de2 2197extern AVCodecParser h261_parser;
8424cf50
FB
2198extern AVCodecParser h263_parser;
2199extern AVCodecParser h264_parser;
2200extern AVCodecParser mpegaudio_parser;
2201extern AVCodecParser ac3_parser;
2202
544eb99c 2203/* memory */
e4eadb4b 2204void *av_malloc(unsigned int size);
18f77016 2205void *av_mallocz(unsigned int size);
8e1e6f31 2206void *av_realloc(void *ptr, unsigned int size);
544eb99c 2207void av_free(void *ptr);
8e1e6f31 2208char *av_strdup(const char *s);
81c5f887 2209void av_freep(void *ptr);
97d96aaa 2210void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
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2211/* for static data only */
2212/* call av_free_static to release all staticaly allocated tables */
628d601b 2213void av_free_static(void);
8d1f2ba5 2214void *av_mallocz_static(unsigned int size);
544eb99c 2215
fc384777
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2216/* add by bero : in adx.c */
2217int is_adx(const unsigned char *buf,size_t bufsize);
2218
e1c2a5a0
RT
2219void img_copy(AVPicture *dst, const AVPicture *src,
2220 int pix_fmt, int width, int height);
2221
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2222/* av_log API */
2223
2224#include <stdarg.h>
2225
d8019eb5 2226#define AV_LOG_QUIET -1
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2227#define AV_LOG_ERROR 0
2228#define AV_LOG_INFO 1
2229#define AV_LOG_DEBUG 2
2230
f4bd8cf0 2231#ifdef __GNUC__
bc874dae 2232extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
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2233#else
2234extern void av_log(void*, int level, const char *fmt, ...);
2235#endif
2236
bc874dae 2237extern void av_vlog(void*, int level, const char *fmt, va_list);
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2238extern int av_log_get_level(void);
2239extern void av_log_set_level(int);
bc874dae 2240extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
9b879566 2241
3a278992 2242/* endian macros */
e96682e6 2243#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
3a278992
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2244#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2245#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2246 (((uint8_t*)(x))[1] << 16) | \
2247 (((uint8_t*)(x))[2] << 8) | \
2248 ((uint8_t*)(x))[3])
2249#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2250#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2251 (((uint8_t*)(x))[2] << 16) | \
2252 (((uint8_t*)(x))[1] << 8) | \
2253 ((uint8_t*)(x))[0])
e96682e6 2254#endif
3a278992 2255
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2256#ifdef __cplusplus
2257}
2258#endif
2259
a96b68b7 2260#endif /* AVCODEC_H */