Avoid segfault on ffmpeg "buffer flush" in mpeg12.c patch by (Wolfram Gloger <wmglo...
[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"
20#define LIBAVCODEC_BUILD 4718
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,
070ed1bc 100 CODEC_ID_QTRLE,
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101
102 /* various pcm "codecs" */
103 CODEC_ID_PCM_S16LE,
104 CODEC_ID_PCM_S16BE,
105 CODEC_ID_PCM_U16LE,
106 CODEC_ID_PCM_U16BE,
107 CODEC_ID_PCM_S8,
108 CODEC_ID_PCM_U8,
109 CODEC_ID_PCM_MULAW,
110 CODEC_ID_PCM_ALAW,
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111
112 /* various adpcm codecs */
113 CODEC_ID_ADPCM_IMA_QT,
114 CODEC_ID_ADPCM_IMA_WAV,
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115 CODEC_ID_ADPCM_IMA_DK3,
116 CODEC_ID_ADPCM_IMA_DK4,
2fdf638b 117 CODEC_ID_ADPCM_IMA_WS,
7d8379f2 118 CODEC_ID_ADPCM_IMA_SMJPEG,
0147f198 119 CODEC_ID_ADPCM_MS,
e2a7bb28 120 CODEC_ID_ADPCM_4XM,
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121 CODEC_ID_ADPCM_XA,
122 CODEC_ID_ADPCM_ADX,
7d8379f2 123 CODEC_ID_ADPCM_EA,
e5966052 124 CODEC_ID_ADPCM_G726,
891f64b3 125
126 /* AMR */
127 CODEC_ID_AMR_NB,
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128 CODEC_ID_AMR_WB,
129
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130 /* RealAudio codecs*/
131 CODEC_ID_RA_144,
132 CODEC_ID_RA_288,
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133
134 /* various DPCM codecs */
135 CODEC_ID_ROQ_DPCM,
136 CODEC_ID_INTERPLAY_DPCM,
9937e686 137 CODEC_ID_XAN_DPCM,
985180a1 138
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139 CODEC_ID_FLAC,
140
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141 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
142 stream (only used by libavformat) */
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143
144 CODEC_ID_DTS,
de6d9b64 145};
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146
147/* CODEC_ID_MP3LAME is absolete */
148#define CODEC_ID_MP3LAME CODEC_ID_MP3
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149
150enum CodecType {
4a663d80 151 CODEC_TYPE_UNKNOWN = -1,
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152 CODEC_TYPE_VIDEO,
153 CODEC_TYPE_AUDIO,
985180a1 154 CODEC_TYPE_DATA,
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155};
156
64863965 157/**
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158 * Pixel format. Notes:
159 *
160 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
161 * color is put together as:
162 * (A << 24) | (R << 16) | (G << 8) | B
163 * This is stored as BGRA on little endian CPU architectures and ARGB on
164 * big endian CPUs.
165 *
166 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
167 * image data is stored in AVFrame.data[0]. The palette is transported in
168 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
169 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
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170 * also endian-specific). Note also that the individual RGB palette
171 * components stored in AVFrame.data[1] should be in the range 0..255.
172 * This is important as many custom PAL8 video codecs that were designed
173 * to run on the IBM VGA graphics adapter use 6-bit palette components.
64863965 174 */
de6d9b64 175enum PixelFormat {
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176 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
177 PIX_FMT_YUV422,
178 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
179 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
180 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
181 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
0f371e3e 182 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
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183 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
184 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
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185 PIX_FMT_RGB565, ///< always stored in cpu endianness
186 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
dab64ebc 187 PIX_FMT_GRAY8,
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188 PIX_FMT_MONOWHITE, ///< 0 is white
189 PIX_FMT_MONOBLACK, ///< 0 is black
190 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
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191 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
192 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
193 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
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194 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
195 PIX_FMT_XVMC_MPEG2_IDCT,
dab64ebc 196 PIX_FMT_NB,
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197};
198
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199/* currently unused, may be used if 24/32 bits samples ever supported */
200enum SampleFormat {
64863965 201 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
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202};
203
de6d9b64 204/* in bytes */
bc8d1857 205#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 206
d7425f59 207/**
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208 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
209 * this is mainly needed because some optimized bitstream readers read
210 * 32 or 64 bit at once and could read over the end<br>
211 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
212 * MPEG bitstreams could cause overread and segfault
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213 */
214#define FF_INPUT_BUFFER_PADDING_SIZE 8
215
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216/* motion estimation type, EPZS by default */
217enum Motion_Est_ID {
101bea5f 218 ME_ZERO = 1,
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219 ME_FULL,
220 ME_LOG,
221 ME_PHODS,
222 ME_EPZS,
223 ME_X1
224};
225
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226typedef struct RcOverride{
227 int start_frame;
228 int end_frame;
229 int qscale; // if this is 0 then quality_factor will be used instead
230 float quality_factor;
231} RcOverride;
232
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233/* only for ME compatiblity with old apps */
234extern int motion_estimation_method;
235
4e00e76b 236#define FF_MAX_B_FRAMES 8
9dbcbd92 237
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238/* encoding support
239 these flags can be passed in AVCodecContext.flags before initing
240 Note: note not everything is supported yet
241*/
de6d9b64 242
64863965 243#define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
dba019da 244#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
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245#define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
246#define CODEC_FLAG_GMC 0x0020 ///< use GMC
ca7d05d5 247#define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
64863965 248#define CODEC_FLAG_PART 0x0080 ///< use data partitioning
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249/* parent program gurantees that the input for b-frame containing streams is not written to
250 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 251#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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252#define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
253#define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
254#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
255#define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
256#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
257#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
258#define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
d7425f59 259 of only at frame boundaries */
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260#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
261#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
3bb07d61 262#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
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263#define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
264#define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
265#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
266#define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
21e59552 267/* Fx : Flag for h263+ extra options */
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268#define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
269#define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
64863965 270#define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
f2f6134b 271#define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
1f26c6f3 272#define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
dba019da 273#define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
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274#define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
275#define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
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276#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
277#define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
baaf3f46 278#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
303e50e6 279#define CODEC_FLAG_CLOSED_GOP 0x80000000
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280/* Unsupported options :
281 * Syntax Arithmetic coding (SAC)
21e59552 282 * Reference Picture Selection
ba58dabc 283 * Independant Segment Decoding */
21e59552 284/* /Fx */
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285/* codec capabilities */
286
64863965 287#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
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288/**
289 * Codec uses get_buffer() for allocating buffers.
290 * direct rendering method 1
291 */
292#define CODEC_CAP_DR1 0x0002
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293/* if 'parse_only' field is true, then avcodec_parse_frame() can be
294 used */
295#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 296#define CODEC_CAP_TRUNCATED 0x0008
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297/* codec can export data for HW decoding (XvMC) */
298#define CODEC_CAP_HWACCEL 0x0010
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299/** codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data */
300#define CODEC_CAP_DELAY 0x0020
bf89e6b1 301
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302//the following defines might change, so dont expect compatibility if u use them
303#define MB_TYPE_INTRA4x4 0x0001
304#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
305#define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
306#define MB_TYPE_16x16 0x0008
307#define MB_TYPE_16x8 0x0010
308#define MB_TYPE_8x16 0x0020
309#define MB_TYPE_8x8 0x0040
310#define MB_TYPE_INTERLACED 0x0080
311#define MB_TYPE_DIRECT2 0x0100 //FIXME
312#define MB_TYPE_ACPRED 0x0200
313#define MB_TYPE_GMC 0x0400
314#define MB_TYPE_SKIP 0x0800
315#define MB_TYPE_P0L0 0x1000
316#define MB_TYPE_P1L0 0x2000
317#define MB_TYPE_P0L1 0x4000
318#define MB_TYPE_P1L1 0x8000
319#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
320#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
321#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
322#define MB_TYPE_QUANT 0x00010000
323#define MB_TYPE_CBP 0x00020000
324//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
325
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326/**
327 * Pan Scan area.
328 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
329 */
330typedef struct AVPanScan{
331 /**
332 * id.
333 * - encoding: set by user.
334 * - decoding: set by lavc
335 */
336 int id;
337
338 /**
339 * width and height in 1/16 pel
340 * - encoding: set by user.
341 * - decoding: set by lavc
342 */
343 int width;
344 int height;
345
346 /**
347 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
348 * - encoding: set by user.
349 * - decoding: set by lavc
350 */
351 int16_t position[3][2];
352}AVPanScan;
353
492cd3a9 354#define FF_COMMON_FRAME \
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355 /**\
356 * pointer to the picture planes.\
357 * this might be different from the first allocated byte\
358 * - encoding: \
359 * - decoding: \
360 */\
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361 uint8_t *data[4];\
362 int linesize[4];\
363 /**\
32db2b1d 364 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
1e491e29 365 * this isnt used by lavc unless the default get/release_buffer() is used\
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366 * - encoding: \
367 * - decoding: \
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368 */\
369 uint8_t *base[4];\
370 /**\
371 * 1 -> keyframe, 0-> not\
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372 * - encoding: set by lavc\
373 * - decoding: set by lavc\
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374 */\
375 int key_frame;\
376\
377 /**\
0da71265 378 * picture type of the frame, see ?_TYPE below.\
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379 * - encoding: set by lavc for coded_picture (and set by user for input)\
380 * - decoding: set by lavc\
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381 */\
382 int pict_type;\
383\
384 /**\
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385 * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
386 * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
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387 * - encoding: MUST be set by user\
388 * - decoding: set by lavc\
1e491e29 389 */\
be6784dc 390 int64_t pts;\
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391\
392 /**\
393 * picture number in bitstream order.\
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394 * - encoding: set by\
395 * - decoding: set by lavc\
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396 */\
397 int coded_picture_number;\
398 /**\
1e491e29 399 * picture number in display order.\
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400 * - encoding: set by\
401 * - decoding: set by lavc\
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402 */\
403 int display_picture_number;\
404\
405 /**\
158c7f05 406 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
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407 * - encoding: set by lavc for coded_picture (and set by user for input)\
408 * - decoding: set by lavc\
1e491e29 409 */\
158c7f05 410 int quality; \
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411\
412 /**\
413 * buffer age (1->was last buffer and dint change, 2->..., ...).\
158c7f05 414 * set to INT_MAX if the buffer has not been used yet \
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415 * - encoding: unused\
416 * - decoding: MUST be set by get_buffer()\
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417 */\
418 int age;\
419\
420 /**\
421 * is this picture used as reference\
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422 * - encoding: unused\
423 * - decoding: set by lavc (before get_buffer() call))\
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424 */\
425 int reference;\
426\
427 /**\
428 * QP table\
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429 * - encoding: unused\
430 * - decoding: set by lavc\
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431 */\
432 int8_t *qscale_table;\
433 /**\
434 * QP store stride\
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435 * - encoding: unused\
436 * - decoding: set by lavc\
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437 */\
438 int qstride;\
439\
440 /**\
441 * mbskip_table[mb]>=1 if MB didnt change\
442 * stride= mb_width = (width+15)>>4\
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443 * - encoding: unused\
444 * - decoding: set by lavc\
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445 */\
446 uint8_t *mbskip_table;\
447\
448 /**\
8d7ec294 449 * Motion vector table\
a4d36c11 450 * - encoding: set by user\
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451 * - decoding: set by lavc\
452 */\
453 int16_t (*motion_val[2])[2];\
454\
455 /**\
456 * Macroblock type table\
457 * mb_type_base + mb_width + 2\
a4d36c11 458 * - encoding: set by user\
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459 * - decoding: set by lavc\
460 */\
461 uint32_t *mb_type;\
462\
463 /**\
464 * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
465 * - encoding: unused\
466 * - decoding: set by lavc\
467 */\
468 uint8_t motion_subsample_log2;\
469\
470 /**\
1e491e29 471 * for some private data of the user\
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472 * - encoding: unused\
473 * - decoding: set by user\
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474 */\
475 void *opaque;\
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476\
477 /**\
478 * error\
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479 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
480 * - decoding: unused\
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481 */\
482 uint64_t error[4];\
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483\
484 /**\
485 * type of the buffer (to keep track of who has to dealloc data[*])\
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486 * - encoding: set by the one who allocs it\
487 * - decoding: set by the one who allocs it\
3db320ea 488 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
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489 */\
490 int type;\
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491 \
492 /**\
493 * when decoding, this signal how much the picture must be delayed.\
494 * extra_delay = repeat_pict / (2*fps)\
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495 * - encoding: unused\
496 * - decoding: set by lavc\
2ec23b6d 497 */\
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498 int repeat_pict;\
499 \
500 /**\
501 * \
502 */\
503 int qscale_type;\
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504 \
505 /**\
506 * The content of the picture is interlaced.\
507 * - encoding: set by user\
508 * - decoding: set by lavc (default 0)\
509 */\
510 int interlaced_frame;\
511 \
512 /**\
9dad924e 513 * if the content is interlaced, is top field displayed first.\
2744ca9a 514 * - encoding: set by user\
9dad924e 515 * - decoding: set by lavc\
2744ca9a 516 */\
9dad924e 517 int top_field_first;\
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518 \
519 /**\
520 * Pan scan.\
521 * - encoding: set by user\
522 * - decoding: set by lavc\
523 */\
524 AVPanScan *pan_scan;\
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525 \
526 /**\
527 * tell user application that palette has changed from previous frame.\
528 * - encoding: ??? (no palette-enabled encoder yet)\
529 * - decoding: set by lavc (default 0)\
530 */\
531 int palette_has_changed;\
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532 \
533 /**\
534 * Codec suggestion on buffer type if != 0\
535 * - encoding: unused\
536 * - decoding: set by lavc (before get_buffer() call))\
537 */\
538 int buffer_hints;\
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539\
540 /**\
541 * DCT coeffitients\
542 * - encoding: unused\
543 * - decoding: set by lavc\
544 */\
545 short *dct_coeff;\
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546\
547 /**\
548 * Motion referece frame index\
549 * - encoding: set by user\
550 * - decoding: set by lavc\
551 */\
552 int8_t *ref_index[2];
2ec23b6d 553
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554#define FF_QSCALE_TYPE_MPEG1 0
555#define FF_QSCALE_TYPE_MPEG2 1
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556
557#define FF_BUFFER_TYPE_INTERNAL 1
9b56edf5 558#define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
a4d36c11 559#define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
9b56edf5 560#define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
4e00e76b 561
1e491e29 562
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563#define FF_I_TYPE 1 // Intra
564#define FF_P_TYPE 2 // Predicted
565#define FF_B_TYPE 3 // Bi-dir predicted
566#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
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567#define FF_SI_TYPE 5
568#define FF_SP_TYPE 6
1e491e29 569
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570#define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
571#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
572#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
573#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
574
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575/**
576 * Audio Video Frame.
577 */
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578typedef struct AVFrame {
579 FF_COMMON_FRAME
580} AVFrame;
1e491e29 581
14bea432 582#define DEFAULT_FRAME_RATE_BASE 1001000
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583
584/**
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585 * Used by av_log
586 */
587typedef struct AVCLASS AVClass;
588struct AVCLASS {
589 const char* class_name;
590 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
591 or AVFormatContext, which begin with an AVClass.
592 Needed because av_log is in libavcodec and has no visibility
593 of AVIn/OutputFormat */
594};
595
596/**
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597 * main external api structure.
598 */
de6d9b64 599typedef struct AVCodecContext {
b71901e6 600 /**
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601 * Info on struct for av_log
602 * - set by avcodec_alloc_context
603 */
43465395 604 AVClass *av_class;
bc874dae 605 /**
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606 * the average bitrate.
607 * - encoding: set by user. unused for constant quantizer encoding
608 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
b71901e6 609 */
de6d9b64 610 int bit_rate;
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611
612 /**
64863965 613 * number of bits the bitstream is allowed to diverge from the reference.
b71901e6 614 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
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615 * - encoding: set by user. unused for constant quantizer encoding
616 * - decoding: unused
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617 */
618 int bit_rate_tolerance;
619
620 /**
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621 * CODEC_FLAG_*.
622 * - encoding: set by user.
623 * - decoding: set by user.
b71901e6 624 */
de6d9b64 625 int flags;
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626
627 /**
628 * some codecs needs additionnal format info. It is stored here
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629 * - encoding: set by user.
630 * - decoding: set by lavc. (FIXME is this ok?)
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631 */
632 int sub_id;
633
634 /**
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635 * motion estimation algorithm used for video coding.
636 * - encoding: MUST be set by user.
637 * - decoding: unused
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638 */
639 int me_method;
640
641 /**
64863965 642 * some codecs need / can use extra-data like huffman tables.
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643 * mjpeg: huffman tables
644 * rv10: additional flags
b704e742 645 * mpeg4: global headers (they can be in the bitstream or here)
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646 * - encoding: set/allocated/freed by lavc.
647 * - decoding: set/allocated/freed by user.
b71901e6 648 */
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649 void *extradata;
650 int extradata_size;
651
de6d9b64 652 /* video only */
b71901e6 653 /**
14bea432 654 * frames per sec multiplied by frame_rate_base.
b71901e6 655 * for variable fps this is the precission, so if the timestamps
14bea432 656 * can be specified in msec precssion then this is 1000*frame_rate_base
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657 * - encoding: MUST be set by user
658 * - decoding: set by lavc. 0 or the frame_rate if available
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659 */
660 int frame_rate;
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661
662 /**
64863965
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663 * width / height.
664 * - encoding: MUST be set by user.
95831f48 665 * - decoding: set by user if known, codec should override / dynamically change if needed
b71901e6 666 */
de6d9b64 667 int width, height;
b71901e6 668
e769f053 669#define FF_ASPECT_EXTENDED 15
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670
671 /**
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672 * the number of pictures in a group of pitures, or 0 for intra_only.
673 * - encoding: set by user.
674 * - decoding: unused
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675 */
676 int gop_size;
677
678 /**
64863965 679 * pixel format, see PIX_FMT_xxx.
36b58e85
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680 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
681 * conversion is in order. This only works for
682 * codecs with one supported pix_fmt, we should
683 * do something for a generic case as well.
64863965 684 * - decoding: set by lavc.
b71901e6 685 */
e4eadb4b 686 enum PixelFormat pix_fmt;
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687
688 /**
689 * Frame rate emulation. If not zero lower layer (i.e. format handler)
690 * has to read frames at native frame rate.
691 * - encoding: set by user.
692 * - decoding: unused.
693 */
694 int rate_emu;
695
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696 /**
697 * if non NULL, 'draw_horiz_band' is called by the libavcodec
698 * decoder to draw an horizontal band. It improve cache usage. Not
699 * all codecs can do that. You must check the codec capabilities
700 * before
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701 * - encoding: unused
702 * - decoding: set by user.
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703 * @param height the height of the slice
704 * @param y the y position of the slice
705 * @param type 1->top field, 2->bottom field, 3->frame
706 * @param offset offset into the AVFrame.data from which the slice should be read
b71901e6 707 */
bf89e6b1 708 void (*draw_horiz_band)(struct AVCodecContext *s,
da64ecc3 709 const AVFrame *src, int offset[4],
3bb07d61 710 int y, int type, int height);
bf89e6b1 711
de6d9b64 712 /* audio only */
64863965 713 int sample_rate; ///< samples per sec
de6d9b64 714 int channels;
64863965 715 int sample_fmt; ///< sample format, currenly unused
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716
717 /* the following data should not be initialized */
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718 int frame_size; ///< in samples, initialized when calling 'init'
719 int frame_number; ///< audio or video frame number
720 int real_pict_num; ///< returns the real picture number of previous encoded frame
1e491e29 721
b71901e6 722 /**
b71901e6 723 * number of frames the decoded output will be delayed relative to
64863965
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724 * the encoded input.
725 * - encoding: set by lavc.
726 * - decoding: unused
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727 */
728 int delay;
1ff662cc 729
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730 /* - encoding parameters */
731 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
732 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
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733
734 /**
64863965
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735 * minimum quantizer.
736 * - encoding: set by user.
737 * - decoding: unused
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738 */
739 int qmin;
740
741 /**
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742 * maximum quantizer.
743 * - encoding: set by user.
744 * - decoding: unused
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745 */
746 int qmax;
747
748 /**
64863965
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749 * maximum quantizer difference etween frames.
750 * - encoding: set by user.
751 * - decoding: unused
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752 */
753 int max_qdiff;
754
755 /**
64863965 756 * maximum number of b frames between non b frames.
b71901e6 757 * note: the output will be delayed by max_b_frames+1 relative to the input
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758 * - encoding: set by user.
759 * - decoding: unused
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760 */
761 int max_b_frames;
762
763 /**
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764 * qscale factor between ip and b frames.
765 * - encoding: set by user.
766 * - decoding: unused
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767 */
768 float b_quant_factor;
769
770 /** obsolete FIXME remove */
771 int rc_strategy;
8b4c7dbc 772 int b_frame_strategy;
9dbcbd92 773
b71901e6 774 /**
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775 * hurry up amount.
776 * - encoding: unused
777 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
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778 */
779 int hurry_up;
2417652e 780
de6d9b64 781 struct AVCodec *codec;
b71901e6 782
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783 void *priv_data;
784
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785 /* unused, FIXME remove*/
786 int rtp_mode;
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787
788 int rtp_payload_size; /* The size of the RTP payload, the coder will */
789 /* do it's best to deliver a chunk with size */
790 /* below rtp_payload_size, the chunk will start */
791 /* with a start code on some codecs like H.263 */
792 /* This doesn't take account of any particular */
793 /* headers inside the transmited RTP payload */
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794
795
796 /* The RTP callcack: This function is called */
797 /* every time the encoder as a packet to send */
798 /* Depends on the encoder if the data starts */
799 /* with a Start Code (it should) H.263 does */
a7fcb3ea 800 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number);
81401c1f 801
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802 /* statistics, used for 2-pass encoding */
803 int mv_bits;
804 int header_bits;
805 int i_tex_bits;
806 int p_tex_bits;
807 int i_count;
808 int p_count;
809 int skip_count;
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810 int misc_bits;
811
812 /**
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813 * number of bits used for the previously encoded frame.
814 * - encoding: set by lavc
7004ffb3 815 * - decoding: unused
b71901e6 816 */
098eefe1 817 int frame_bits;
7004ffb3 818
b71901e6 819 /**
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820 * private data of the user, can be used to carry app specific stuff.
821 * - encoding: set by user
822 * - decoding: set by user
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823 */
824 void *opaque;
825
de6d9b64 826 char codec_name[32];
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827 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
828 enum CodecID codec_id; /* see CODEC_ID_xxx */
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829
830 /**
831 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
832 * this is used to workaround some encoder bugs
bd5a6020 833 * - encoding: set by user, if not then the default based on codec_id will be used
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834 * - decoding: set by user, will be converted to upper case by lavc during init
835 */
836 unsigned int codec_tag;
92ba5ffb 837
b71901e6 838 /**
64863965
MN
839 * workaround bugs in encoders which sometimes cannot be detected automatically.
840 * - encoding: unused
841 * - decoding: set by user
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842 */
843 int workaround_bugs;
64863965 844#define FF_BUG_AUTODETECT 1 ///< autodetection
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845#define FF_BUG_OLD_MSMPEG4 2
846#define FF_BUG_XVID_ILACE 4
847#define FF_BUG_UMP4 8
848#define FF_BUG_NO_PADDING 16
3116cb14 849#define FF_BUG_AMV 32
ac0c6638 850#define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
03e93d35 851#define FF_BUG_QPEL_CHROMA 64
db794953 852#define FF_BUG_STD_QPEL 128
36df8805 853#define FF_BUG_QPEL_CHROMA2 256
c40c3482 854#define FF_BUG_DIRECT_BLOCKSIZE 512
1c6dcb0f 855#define FF_BUG_EDGE 1024
b44bdf7e 856#define FF_BUG_HPEL_CHROMA 2048
4ccde216 857#define FF_BUG_DC_CLIP 4096
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858//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
859
b71901e6 860 /**
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861 * luma single coeff elimination threshold.
862 * - encoding: set by user
863 * - decoding: unused
b71901e6 864 */
1f6b6e50 865 int luma_elim_threshold;
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866
867 /**
64863965
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868 * chroma single coeff elimination threshold.
869 * - encoding: set by user
870 * - decoding: unused
b71901e6 871 */
1f6b6e50 872 int chroma_elim_threshold;
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873
874 /**
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875 * strictly follow the std (MPEG4, ...).
876 * - encoding: set by user
877 * - decoding: unused
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878 */
879 int strict_std_compliance;
880
881 /**
64863965 882 * qscale offset between ip and b frames.
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883 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
884 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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885 * - encoding: set by user.
886 * - decoding: unused
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887 */
888 float b_quant_offset;
889
890 /**
ce3bcaed 891 * error resilience higher values will detect more errors but may missdetect
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892 * some more or less valid parts as errors.
893 * - encoding: unused
894 * - decoding: set by user
b71901e6 895 */
1f6b6e50 896 int error_resilience;
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897#define FF_ER_CAREFULL 1
898#define FF_ER_COMPLIANT 2
899#define FF_ER_AGGRESSIVE 3
900#define FF_ER_VERY_AGGRESSIVE 4
ae72cda6 901
6b72ac63 902 /**
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903 * called at the beginning of each frame to get a buffer for it.
904 * if pic.reference is set then the frame will be read later by lavc
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905 * avcodec_align_dimensions() should be used to find the required width and
906 * height, as they normally need to be rounded up to the next multiple of 16
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907 * - encoding: unused
908 * - decoding: set by lavc, user can override
b71901e6 909 */
492cd3a9 910 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
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911
912 /**
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913 * called to release buffers which where allocated with get_buffer.
914 * a released buffer can be reused in get_buffer()
915 * pic.data[*] must be set to NULL
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916 * - encoding: unused
917 * - decoding: set by lavc, user can override
b71901e6 918 */
492cd3a9 919 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
0fd90455 920
b71901e6 921 /**
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922 * if 1 the stream has a 1 frame delay during decoding.
923 * - encoding: set by lavc
64863965 924 * - decoding: set by lavc
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925 */
926 int has_b_frames;
b71901e6 927
64863965 928 int block_align; ///< used by some WAV based audio codecs
ce980a95 929
64863965 930 int parse_only; /* - decoding only: if true, only parsing is done
917e06c8
FB
931 (function avcodec_parse_frame()). The frame
932 data is returned. Only MPEG codecs support this now. */
ce980a95 933
b71901e6 934 /**
e4eadb4b 935 * 0-> h263 quant 1-> mpeg quant.
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936 * - encoding: set by user.
937 * - decoding: unused
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938 */
939 int mpeg_quant;
ce980a95 940
b71901e6 941 /**
64863965
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942 * pass1 encoding statistics output buffer.
943 * - encoding: set by lavc
944 * - decoding: unused
b71901e6 945 */
64863965 946 char *stats_out;
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947
948 /**
949 * pass2 encoding statistics input buffer.
950 * concatenated stuff from stats_out of pass1 should be placed here
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951 * - encoding: allocated/set/freed by user
952 * - decoding: unused
b71901e6
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953 */
954 char *stats_in;
955
956 /**
64863965 957 * ratecontrol qmin qmax limiting method.
b71901e6 958 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
64863965
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959 * - encoding: set by user.
960 * - decoding: unused
b71901e6 961 */
ce980a95 962 float rc_qsquish;
b71901e6 963
ce980a95
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964 float rc_qmod_amp;
965 int rc_qmod_freq;
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966
967 /**
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968 * ratecontrol override, see RcOverride.
969 * - encoding: allocated/set/freed by user.
970 * - decoding: unused
b71901e6 971 */
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972 RcOverride *rc_override;
973 int rc_override_count;
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MN
974
975 /**
64863965
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976 * rate control equation.
977 * - encoding: set by user
978 * - decoding: unused
b71901e6 979 */
ce980a95 980 char *rc_eq;
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981
982 /**
64863965
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983 * maximum bitrate.
984 * - encoding: set by user.
985 * - decoding: unused
b71901e6 986 */
ce980a95 987 int rc_max_rate;
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988
989 /**
64863965
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990 * minimum bitrate.
991 * - encoding: set by user.
992 * - decoding: unused
b71901e6 993 */
ce980a95 994 int rc_min_rate;
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995
996 /**
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997 * decoder bitstream buffer size.
998 * - encoding: set by user.
999 * - decoding: unused
b71901e6 1000 */
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1001 int rc_buffer_size;
1002 float rc_buffer_aggressivity;
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1003
1004 /**
64863965 1005 * qscale factor between p and i frames.
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1006 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1007 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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1008 * - encoding: set by user.
1009 * - decoding: unused
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1010 */
1011 float i_quant_factor;
1012
1013 /**
64863965 1014 * qscale offset between p and i frames.
64863965
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1015 * - encoding: set by user.
1016 * - decoding: unused
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1017 */
1018 float i_quant_offset;
1019
1020 /**
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1021 * initial complexity for pass1 ratecontrol.
1022 * - encoding: set by user.
1023 * - decoding: unused
b71901e6 1024 */
ce980a95 1025 float rc_initial_cplx;
917e06c8 1026
b71901e6 1027 /**
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1028 * dct algorithm, see FF_DCT_* below.
1029 * - encoding: set by user
1030 * - decoding: unused
b71901e6 1031 */
28db7fce 1032 int dct_algo;
c7e07931 1033#define FF_DCT_AUTO 0
28db7fce 1034#define FF_DCT_FASTINT 1
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1035#define FF_DCT_INT 2
1036#define FF_DCT_MMX 3
1037#define FF_DCT_MLIB 4
05c4072b 1038#define FF_DCT_ALTIVEC 5
65e4c8c9 1039#define FF_DCT_FAAN 6
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1040
1041 /**
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1042 * luminance masking (0-> disabled).
1043 * - encoding: set by user
1044 * - decoding: unused
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1045 */
1046 float lumi_masking;
1047
1048 /**
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MN
1049 * temporary complexity masking (0-> disabled).
1050 * - encoding: set by user
1051 * - decoding: unused
c5d309f2
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1052 */
1053 float temporal_cplx_masking;
1054
1055 /**
64863965
MN
1056 * spatial complexity masking (0-> disabled).
1057 * - encoding: set by user
1058 * - decoding: unused
c5d309f2
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1059 */
1060 float spatial_cplx_masking;
1061
1062 /**
64863965
MN
1063 * p block masking (0-> disabled).
1064 * - encoding: set by user
1065 * - decoding: unused
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1066 */
1067 float p_masking;
15415af4 1068
5e746b99 1069 /**
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1070 * darkness masking (0-> disabled).
1071 * - encoding: set by user
1072 * - decoding: unused
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1073 */
1074 float dark_masking;
0c2dd16e 1075
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NK
1076
1077 /* for binary compatibility */
1078 int unused;
1079
0c2dd16e 1080 /**
64863965
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1081 * idct algorithm, see FF_IDCT_* below.
1082 * - encoding: set by user
1083 * - decoding: set by user
2ad1516a
MN
1084 */
1085 int idct_algo;
1086#define FF_IDCT_AUTO 0
1087#define FF_IDCT_INT 1
1088#define FF_IDCT_SIMPLE 2
1089#define FF_IDCT_SIMPLEMMX 3
1090#define FF_IDCT_LIBMPEG2MMX 4
1091#define FF_IDCT_PS2 5
1092#define FF_IDCT_MLIB 6
1093#define FF_IDCT_ARM 7
05c4072b 1094#define FF_IDCT_ALTIVEC 8
b82cdc72 1095#define FF_IDCT_SH4 9
bd7d1ea7 1096#define FF_IDCT_SIMPLEARM 10
2ad1516a 1097
144f0625 1098 /**
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1099 * slice count.
1100 * - encoding: set by lavc
1101 * - decoding: set by user (or 0)
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1102 */
1103 int slice_count;
1104 /**
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1105 * slice offsets in the frame in bytes.
1106 * - encoding: set/allocated by lavc
1107 * - decoding: set/allocated by user (or NULL)
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1108 */
1109 int *slice_offset;
1110
4d2858de 1111 /**
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1112 * error concealment flags.
1113 * - encoding: unused
1114 * - decoding: set by user
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1115 */
1116 int error_concealment;
1117#define FF_EC_GUESS_MVS 1
1118#define FF_EC_DEBLOCK 2
1119
6b72ac63 1120 /**
bec89a84 1121 * dsp_mask could be add used to disable unwanted CPU features
8350df97 1122 * CPU features (i.e. MMX, SSE. ...)
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1123 *
1124 * with FORCE flag you may instead enable given CPU features
1125 * (Dangerous: usable in case of misdetection, improper usage however will
1126 * result into program crash)
1127 */
1128 unsigned dsp_mask;
1129#define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1130 /* lower 16 bits - CPU features */
1131#ifdef HAVE_MMX
1132#define FF_MM_MMX 0x0001 /* standard MMX */
1133#define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1134#define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1135#define FF_MM_SSE 0x0008 /* SSE functions */
1136#define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1137#endif /* HAVE_MMX */
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1138
1139 /**
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1140 * bits per sample/pixel from the demuxer (needed for huffyuv).
1141 * - encoding: set by lavc
1142 * - decoding: set by user
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1143 */
1144 int bits_per_sample;
1145
1146 /**
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1147 * prediction method (needed for huffyuv).
1148 * - encoding: set by user
1149 * - decoding: unused
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1150 */
1151 int prediction_method;
1152#define FF_PRED_LEFT 0
1153#define FF_PRED_PLANE 1
1154#define FF_PRED_MEDIAN 2
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1155
1156 /**
5ff85f1d 1157 * sample aspect ratio (0 if unknown).
1f26c6f3 1158 * numerator and denominator must be relative prime and smaller then 256 for some video standards
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1159 * - encoding: set by user.
1160 * - decoding: set by lavc.
5d3cea3a 1161 */
5ff85f1d 1162 AVRational sample_aspect_ratio;
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1163
1164 /**
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1165 * the picture in the bitstream.
1166 * - encoding: set by lavc
1167 * - decoding: set by lavc
1e491e29 1168 */
492cd3a9 1169 AVFrame *coded_frame;
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1170
1171 /**
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1172 * debug.
1173 * - encoding: set by user.
1174 * - decoding: set by user.
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1175 */
1176 int debug;
1177#define FF_DEBUG_PICT_INFO 1
1178#define FF_DEBUG_RC 2
1179#define FF_DEBUG_BITSTREAM 4
1180#define FF_DEBUG_MB_TYPE 8
1181#define FF_DEBUG_QP 16
1182#define FF_DEBUG_MV 32
8289c6fa 1183#define FF_DEBUG_DCT_COEFF 0x00000040
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1184#define FF_DEBUG_SKIP 0x00000080
1185#define FF_DEBUG_STARTCODE 0x00000100
1186#define FF_DEBUG_PTS 0x00000200
46b4feec 1187#define FF_DEBUG_ER 0x00000400
0da71265 1188#define FF_DEBUG_MMCO 0x00000800
8fc6c2b5 1189#define FF_DEBUG_BUGS 0x00001000
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1190#define FF_DEBUG_VIS_QP 0x00002000
1191#define FF_DEBUG_VIS_MB_TYPE 0x00004000
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1192
1193 /**
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1194 * debug.
1195 * - encoding: set by user.
1196 * - decoding: set by user.
1197 */
1198 int debug_mv;
1199#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1200#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1201#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1202
1203 /**
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1204 * error.
1205 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1206 * - decoding: unused
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1207 */
1208 uint64_t error[4];
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1209
1210 /**
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1211 * minimum MB quantizer.
1212 * - encoding: set by user.
1213 * - decoding: unused
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1214 */
1215 int mb_qmin;
1216
1217 /**
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1218 * maximum MB quantizer.
1219 * - encoding: set by user.
1220 * - decoding: unused
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1221 */
1222 int mb_qmax;
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1223
1224 /**
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1225 * motion estimation compare function.
1226 * - encoding: set by user.
1227 * - decoding: unused
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1228 */
1229 int me_cmp;
1230 /**
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1231 * subpixel motion estimation compare function.
1232 * - encoding: set by user.
1233 * - decoding: unused
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1234 */
1235 int me_sub_cmp;
1236 /**
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1237 * macroblock compare function (not supported yet).
1238 * - encoding: set by user.
1239 * - decoding: unused
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1240 */
1241 int mb_cmp;
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1242 /**
1243 * interlaced dct compare function
1244 * - encoding: set by user.
1245 * - decoding: unused
1246 */
1247 int ildct_cmp;
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1248#define FF_CMP_SAD 0
1249#define FF_CMP_SSE 1
1250#define FF_CMP_SATD 2
1251#define FF_CMP_DCT 3
1252#define FF_CMP_PSNR 4
1253#define FF_CMP_BIT 5
1254#define FF_CMP_RD 6
1255#define FF_CMP_ZERO 7
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1256#define FF_CMP_VSAD 8
1257#define FF_CMP_VSSE 9
e6a2ac34 1258#define FF_CMP_NSSE 10
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1259#define FF_CMP_CHROMA 256
1260
1261 /**
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1262 * ME diamond size & shape.
1263 * - encoding: set by user.
1264 * - decoding: unused
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1265 */
1266 int dia_size;
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1267
1268 /**
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1269 * amount of previous MV predictors (2a+1 x 2a+1 square).
1270 * - encoding: set by user.
1271 * - decoding: unused
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1272 */
1273 int last_predictor_count;
70ac76c0 1274
f5fb6b34 1275 /**
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1276 * pre pass for motion estimation.
1277 * - encoding: set by user.
1278 * - decoding: unused
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1279 */
1280 int pre_me;
b07a5980 1281
70ac76c0 1282 /**
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1283 * motion estimation pre pass compare function.
1284 * - encoding: set by user.
1285 * - decoding: unused
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1286 */
1287 int me_pre_cmp;
826f429a 1288
70ac76c0 1289 /**
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1290 * ME pre pass diamond size & shape.
1291 * - encoding: set by user.
1292 * - decoding: unused
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1293 */
1294 int pre_dia_size;
1295
826f429a 1296 /**
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1297 * subpel ME quality.
1298 * - encoding: set by user.
1299 * - decoding: unused
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1300 */
1301 int me_subpel_quality;
1302
a33c7159 1303 /**
64863965 1304 * callback to negotiate the pixelFormat.
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1305 * @param fmt is the list of formats which are supported by the codec,
1306 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1307 * the first is allways the native one
1308 * @return the choosen format
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1309 * - encoding: unused
1310 * - decoding: set by user, if not set then the native format will always be choosen
a33c7159 1311 */
494c56d3 1312 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
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1313
1314 /**
1315 * DTG active format information (additionnal aspect ratio
1316 * information only used in DVB MPEG2 transport streams). 0 if
1317 * not set.
1318 *
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1319 * - encoding: unused.
1320 * - decoding: set by decoder
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1321 */
1322 int dtg_active_format;
1323#define FF_DTG_AFD_SAME 8
1324#define FF_DTG_AFD_4_3 9
1325#define FF_DTG_AFD_16_9 10
1326#define FF_DTG_AFD_14_9 11
1327#define FF_DTG_AFD_4_3_SP_14_9 13
1328#define FF_DTG_AFD_16_9_SP_14_9 14
1329#define FF_DTG_AFD_SP_4_3 15
1330
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1331 /**
1332 * Maximum motion estimation search range in subpel units.
1333 * if 0 then no limit
1334 *
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1335 * - encoding: set by user.
1336 * - decoding: unused.
ebbcdc9a 1337 */
59e0ac8e 1338 int me_range;
ebbcdc9a 1339
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1340 /**
1341 * frame_rate_base.
1342 * for variable fps this is 1
1343 * - encoding: set by user.
1344 * - decoding: set by lavc.
1345 * @todo move this after frame_rate
1346 */
65f7062d 1347
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1348 int frame_rate_base;
1349 /**
1350 * intra quantizer bias.
1351 * - encoding: set by user.
1352 * - decoding: unused
1353 */
1354 int intra_quant_bias;
1355#define FF_DEFAULT_QUANT_BIAS 999999
1356
1357 /**
1358 * inter quantizer bias.
1359 * - encoding: set by user.
1360 * - decoding: unused
1361 */
1362 int inter_quant_bias;
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1363
1364 /**
1365 * color table ID.
1366 * - encoding: unused.
1367 * - decoding: which clrtable should be used for 8bit RGB images
1368 * table have to be stored somewhere FIXME
1369 */
1370 int color_table_id;
1984f635 1371
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1372 /**
1373 * internal_buffer count.
1374 * Dont touch, used by lavc default_get_buffer()
1375 */
1376 int internal_buffer_count;
1377
1378 /**
1379 * internal_buffers.
1380 * Dont touch, used by lavc default_get_buffer()
1381 */
1382 void *internal_buffer;
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1383
1384#define FF_LAMBDA_SHIFT 7
1385#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1386#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1387#define FF_LAMBDA_MAX (256*128-1)
1388
1389#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
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1390 /**
1391 * global quality for codecs which cannot change it per frame.
1392 * this should be proportional to MPEG1/2/4 qscale.
1393 * - encoding: set by user.
1394 * - decoding: unused
1395 */
1396 int global_quality;
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1397
1398#define FF_CODER_TYPE_VLC 0
1399#define FF_CODER_TYPE_AC 1
1400 /**
1401 * coder type
1402 * - encoding: set by user.
1403 * - decoding: unused
1404 */
1405 int coder_type;
1406
1407 /**
1408 * context model
1409 * - encoding: set by user.
1410 * - decoding: unused
1411 */
1412 int context_model;
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1413
1414 /**
1415 * slice flags
1416 * - encoding: unused
1417 * - decoding: set by user.
1418 */
1419 int slice_flags;
1420#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1421#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1422#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1423
fb364ada
IK
1424 /**
1425 * XVideo Motion Acceleration
1426 * - encoding: forbidden
1427 * - decoding: set by decoder
1428 */
1429 int xvmc_acceleration;
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1430
1431 /**
1432 * macroblock decision mode
1433 * - encoding: set by user.
1434 * - decoding: unused
1435 */
1436 int mb_decision;
1437#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1438#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1439#define FF_MB_DECISION_RD 2 ///< rate distoration
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1440
1441 /**
1442 * custom intra quantization matrix
1443 * - encoding: set by user, can be NULL
1444 * - decoding: set by lavc
1445 */
1446 uint16_t *intra_matrix;
1447
1448 /**
1449 * custom inter quantization matrix
1450 * - encoding: set by user, can be NULL
1451 * - decoding: set by lavc
1452 */
1453 uint16_t *inter_matrix;
7d1c3fc1 1454
541ae140
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1455 /**
1456 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1457 * this is used to workaround some encoder bugs
1458 * - encoding: unused
1459 * - decoding: set by user, will be converted to upper case by lavc during init
1460 */
1461 unsigned int stream_codec_tag;
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1462
1463 /**
1464 * scene change detection threshold.
1465 * 0 is default, larger means fewer detected scene changes
1466 * - encoding: set by user.
1467 * - decoding: unused
1468 */
1469 int scenechange_threshold;
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1470
1471 /**
1472 * minimum lagrange multipler
1473 * - encoding: set by user.
1474 * - decoding: unused
1475 */
1476 int lmin;
1477
1478 /**
1479 * maximum lagrange multipler
1480 * - encoding: set by user.
1481 * - decoding: unused
1482 */
1483 int lmax;
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1484
1485 /**
1486 * Palette control structure
1487 * - encoding: ??? (no palette-enabled encoder yet)
1488 * - decoding: set by user.
1489 */
1490 struct AVPaletteControl *palctrl;
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1491
1492 /**
1493 * noise reduction strength
1494 * - encoding: set by user.
1495 * - decoding: unused
1496 */
1497 int noise_reduction;
fa384dcc 1498
074c4ca7 1499 /**
e1c2a5a0
RT
1500 * called at the beginning of a frame to get cr buffer for it.
1501 * buffer type (size, hints) must be the same. lavc won't check it.
1502 * lavc will pass previous buffer in pic, function should return
1503 * same buffer or new buffer with old frame "painted" into it.
1504 * if pic.data[0] == NULL must behave like get_buffer().
074c4ca7 1505 * - encoding: unused
e1c2a5a0 1506 * - decoding: set by lavc, user can override
074c4ca7 1507 */
e1c2a5a0 1508 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
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1509
1510 /**
1511 * number of bits which should be loaded into the rc buffer before decoding starts
1512 * - encoding: set by user.
1513 * - decoding: unused
1514 */
1515 int rc_initial_buffer_occupancy;
1516
1517 /**
1518 *
1519 * - encoding: set by user.
1520 * - decoding: unused
1521 */
1522 int inter_threshold;
1523
1524 /**
1525 * CODEC_FLAG2_*.
1526 * - encoding: set by user.
1527 * - decoding: set by user.
1528 */
1529 int flags2;
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1530
1531 /**
1532 * simulates errors in the bitstream to test error concealment.
1533 * - encoding: set by user.
1534 * - decoding: unused.
1535 */
1536 int error_rate;
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1537
1538 /**
1539 * MP3 antialias algorithm, see FF_AA_* below.
1540 * - encoding: unused
1541 * - decoding: set by user
1542 */
1543 int antialias_algo;
1544#define FF_AA_AUTO 0
1545#define FF_AA_FASTINT 1 //not implemented yet
1546#define FF_AA_INT 2
1547#define FF_AA_FLOAT 3
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1548 /**
1549 * Quantizer noise shaping.
1550 * - encoding: set by user
1551 * - decoding: unused
1552 */
1553 int quantizer_noise_shaping;
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1554
1555 /**
1556 * Thread count.
1557 * is used to decide how many independant tasks should be passed to execute()
1558 * - encoding: set by user
1559 * - decoding: set by user
1560 */
1561 int thread_count;
1562
1563 /**
1564 * the codec may call this to execute several independant things. it will return only after
1565 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1566 * default implementation will execute the parts serially
399cec2f 1567 * @param count the number of things to execute
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1568 * - encoding: set by lavc, user can override
1569 * - decoding: set by lavc, user can override
1570 */
1571 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1572
1573 /**
1574 * Thread opaque.
1575 * can be used by execute() to store some per AVCodecContext stuff.
1576 * - encoding: set by execute()
1577 * - decoding: set by execute()
1578 */
1579 void *thread_opaque;
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1580
1581 /**
f20f8a8b
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1582 * Motion estimation threshold. under which no motion estimation is
1583 * performed, but instead the user specified motion vectors are used
a4d36c11
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1584 *
1585 * - encoding: set by user
f20f8a8b 1586 * - decoding: unused
a4d36c11 1587 */
2750b827 1588 int me_threshold;
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1589
1590 /**
1591 * Macroblock threshold. under which the user specified macroblock types will be used
1592 * - encoding: set by user
1593 * - decoding: unused
1594 */
1595 int mb_threshold;
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1596
1597 /**
d4c5d2ad 1598 * precision of the intra dc coefficient - 8.
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1599 * - encoding: set by user
1600 * - decoding: unused
1601 */
1602 int intra_dc_precision;
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1603
1604 /**
1605 * noise vs. sse weight for the nsse comparsion function.
1606 * - encoding: set by user
1607 * - decoding: unused
1608 */
1609 int nsse_weight;
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1610
1611 /**
1612 * number of macroblock rows at the top which are skiped.
1613 * - encoding: unused
1614 * - decoding: set by user
1615 */
1616 int skip_top;
1617
1618 /**
1619 * number of macroblock rows at the bottom which are skiped.
1620 * - encoding: unused
1621 * - decoding: set by user
1622 */
1623 int skip_bottom;
de6d9b64
FB
1624} AVCodecContext;
1625
97d96aaa 1626
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1627/**
1628 * AVOption.
1629 */
97d96aaa
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1630typedef struct AVOption {
1631 /** options' name */
1632 const char *name; /* if name is NULL, it indicates a link to next */
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1633 /** short English text help or const struct AVOption* subpointer */
1634 const char *help; // const struct AVOption* sub;
97d96aaa
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1635 /** offset to context structure where the parsed value should be stored */
1636 int offset;
1637 /** options' type */
1638 int type;
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1639#define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1640#define FF_OPT_TYPE_DOUBLE 2 ///< double
1641#define FF_OPT_TYPE_INT 3 ///< integer
1642#define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1643#define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
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1644//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1645#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1646#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1647 /** min value (min == max -> no limits) */
1648 double min;
1649 /** maximum value for double/int */
1650 double max;
1651 /** default boo [0,1]l/double/int value */
1652 double defval;
1653 /**
1654 * default string value (with optional semicolon delimited extra option-list
1655 * i.e. option1;option2;option3
1656 * defval might select other then first argument as default
1657 */
1658 const char *defstr;
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1659#define FF_OPT_MAX_DEPTH 10
1660} AVOption;
1661
64863965 1662/**
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1663 * Parse option(s) and sets fields in passed structure
1664 * @param strct structure where the parsed results will be written
1665 * @param list list with AVOptions
1666 * @param opts string with options for parsing
1667 */
1668int avoption_parse(void* strct, const AVOption* list, const char* opts);
1669
1670
1671/**
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1672 * AVCodec.
1673 */
de6d9b64 1674typedef struct AVCodec {
18f77016 1675 const char *name;
5d234974 1676 enum CodecType type;
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1677 int id;
1678 int priv_data_size;
1679 int (*init)(AVCodecContext *);
0c1a9eda 1680 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
de6d9b64 1681 int (*close)(AVCodecContext *);
0fd90455 1682 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
0c1a9eda 1683 uint8_t *buf, int buf_size);
bf89e6b1 1684 int capabilities;
97d96aaa 1685 const AVOption *options;
de6d9b64 1686 struct AVCodec *next;
7a06ff14 1687 void (*flush)(AVCodecContext *);
b0df362b 1688 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
fcee0164 1689 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
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1690} AVCodec;
1691
97d96aaa 1692/**
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1693 * four components are given, that's all.
1694 * the last component is alpha
1695 */
de6d9b64 1696typedef struct AVPicture {
0c1a9eda 1697 uint8_t *data[4];
cd394651 1698 int linesize[4]; ///< number of bytes per line
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FB
1699} AVPicture;
1700
ba118447
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1701/**
1702 * AVPaletteControl
1703 * This structure defines a method for communicating palette changes
1704 * between and demuxer and a decoder.
1705 */
2e99641b 1706#define AVPALETTE_SIZE 1024
432d84c3 1707#define AVPALETTE_COUNT 256
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1708typedef struct AVPaletteControl {
1709
1710 /* demuxer sets this to 1 to indicate the palette has changed;
1711 * decoder resets to 0 */
1712 int palette_changed;
1713
2a2bbcb0
MM
1714 /* 4-byte ARGB palette entries, stored in native byte order; note that
1715 * the individual palette components should be on a 8-bit scale; if
1716 * the palette data comes from a IBM VGA native format, the component
1717 * data is probably 6 bits in size and needs to be scaled */
2e99641b 1718 unsigned int palette[AVPALETTE_COUNT];
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MM
1719
1720} AVPaletteControl;
1721
de6d9b64
FB
1722extern AVCodec ac3_encoder;
1723extern AVCodec mp2_encoder;
9d36bdc9 1724extern AVCodec mp3lame_encoder;
81e0d0b4 1725extern AVCodec oggvorbis_encoder;
29d48296 1726extern AVCodec faac_encoder;
de6d9b64 1727extern AVCodec mpeg1video_encoder;
029911d1 1728extern AVCodec mpeg2video_encoder;
de6d9b64
FB
1729extern AVCodec h263_encoder;
1730extern AVCodec h263p_encoder;
d4f5d74a 1731extern AVCodec flv_encoder;
de6d9b64 1732extern AVCodec rv10_encoder;
68b94c35 1733extern AVCodec rv20_encoder;
6faa4645 1734extern AVCodec dvvideo_encoder;
de6d9b64 1735extern AVCodec mjpeg_encoder;
b1e6b355 1736extern AVCodec ljpeg_encoder;
bf89e6b1 1737extern AVCodec mpeg4_encoder;
84afee34
MN
1738extern AVCodec msmpeg4v1_encoder;
1739extern AVCodec msmpeg4v2_encoder;
1740extern AVCodec msmpeg4v3_encoder;
0151a6f5
MN
1741extern AVCodec wmv1_encoder;
1742extern AVCodec wmv2_encoder;
11f18faf 1743extern AVCodec huffyuv_encoder;
0da71265 1744extern AVCodec h264_encoder;
3d2e8cce 1745extern AVCodec asv1_encoder;
9b56edf5 1746extern AVCodec asv2_encoder;
be3564ed 1747extern AVCodec vcr1_encoder;
5e20f836 1748extern AVCodec ffv1_encoder;
c3bf0288 1749extern AVCodec mdec_encoder;
a273bbfb 1750extern AVCodec zlib_encoder;
3b64893d 1751extern AVCodec svq1_encoder;
de6d9b64
FB
1752
1753extern AVCodec h263_decoder;
c6148de2 1754extern AVCodec h261_decoder;
bf89e6b1 1755extern AVCodec mpeg4_decoder;
84afee34
MN
1756extern AVCodec msmpeg4v1_decoder;
1757extern AVCodec msmpeg4v2_decoder;
1758extern AVCodec msmpeg4v3_decoder;
e1a9dbff 1759extern AVCodec wmv1_decoder;
0151a6f5 1760extern AVCodec wmv2_decoder;
922bc38d
MN
1761extern AVCodec mpeg1video_decoder;
1762extern AVCodec mpeg2video_decoder;
c512b303 1763extern AVCodec mpegvideo_decoder;
fb364ada 1764extern AVCodec mpeg_xvmc_decoder;
de6d9b64 1765extern AVCodec h263i_decoder;
d4f5d74a 1766extern AVCodec flv_decoder;
de6d9b64 1767extern AVCodec rv10_decoder;
68b94c35 1768extern AVCodec rv20_decoder;
be8ffec9 1769extern AVCodec svq1_decoder;
8b82a956 1770extern AVCodec svq3_decoder;
020fcc94 1771extern AVCodec dvvideo_decoder;
bc8d1857
FB
1772extern AVCodec wmav1_decoder;
1773extern AVCodec wmav2_decoder;
4e66ab3b 1774extern AVCodec mjpeg_decoder;
b135d9fb 1775extern AVCodec mjpegb_decoder;
5e83dec4 1776extern AVCodec sp5x_decoder;
4b1f4f23 1777extern AVCodec mp2_decoder;
a96b68b7 1778extern AVCodec mp3_decoder;
3f95e843
FR
1779extern AVCodec mace3_decoder;
1780extern AVCodec mace6_decoder;
11f18faf 1781extern AVCodec huffyuv_decoder;
3aca208a 1782extern AVCodec oggvorbis_decoder;
f70f7c6d 1783extern AVCodec cyuv_decoder;
0da71265 1784extern AVCodec h264_decoder;
deabd4fd 1785extern AVCodec indeo3_decoder;
d86053a4 1786extern AVCodec vp3_decoder;
f44ee2c3 1787extern AVCodec theora_decoder;
891f64b3 1788extern AVCodec amr_nb_decoder;
bc634f6f 1789extern AVCodec amr_nb_encoder;
d663a1fd
MN
1790extern AVCodec amr_wb_encoder;
1791extern AVCodec amr_wb_decoder;
280bd7b7
ZK
1792extern AVCodec aac_decoder;
1793extern AVCodec mpeg4aac_decoder;
3d2e8cce 1794extern AVCodec asv1_decoder;
9b56edf5 1795extern AVCodec asv2_decoder;
be3564ed 1796extern AVCodec vcr1_decoder;
3aff069b 1797extern AVCodec cljr_decoder;
5e20f836 1798extern AVCodec ffv1_decoder;
8809cfee 1799extern AVCodec fourxm_decoder;
c3bf0288 1800extern AVCodec mdec_decoder;
3ef8be2b
MM
1801extern AVCodec roq_decoder;
1802extern AVCodec interplay_video_decoder;
9937e686 1803extern AVCodec xan_wc3_decoder;
2fdf638b
MM
1804extern AVCodec rpza_decoder;
1805extern AVCodec cinepak_decoder;
1806extern AVCodec msrle_decoder;
1807extern AVCodec msvideo1_decoder;
6955a882 1808extern AVCodec vqa_decoder;
4120a53a 1809extern AVCodec idcin_decoder;
1dc1ed99 1810extern AVCodec eightbps_decoder;
11e29a41 1811extern AVCodec smc_decoder;
42cad81a 1812extern AVCodec flic_decoder;
fafa0b75
MM
1813extern AVCodec vmdvideo_decoder;
1814extern AVCodec vmdaudio_decoder;
9a4117d5 1815extern AVCodec truemotion1_decoder;
a273bbfb
RT
1816extern AVCodec mszh_decoder;
1817extern AVCodec zlib_decoder;
b8414bbd
NK
1818extern AVCodec ra_144_decoder;
1819extern AVCodec ra_288_decoder;
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MM
1820extern AVCodec roq_dpcm_decoder;
1821extern AVCodec interplay_dpcm_decoder;
9937e686 1822extern AVCodec xan_dpcm_decoder;
070ed1bc 1823extern AVCodec qtrle_decoder;
ac2570a8 1824extern AVCodec flac_decoder;
de6d9b64 1825
a96b68b7
FB
1826/* pcm codecs */
1827#define PCM_CODEC(id, name) \
1828extern AVCodec name ## _decoder; \
f11d3f23 1829extern AVCodec name ## _encoder
a96b68b7
FB
1830
1831PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1832PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1833PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1834PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1835PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1836PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1837PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1838PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1839
0147f198
FR
1840/* adpcm codecs */
1841
1842PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1843PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
9937e686
MM
1844PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1845PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2fdf638b 1846PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
7d8379f2 1847PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
0147f198 1848PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
4b465299 1849PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
fc384777
MM
1850PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1851PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
7d8379f2 1852PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
e5966052 1853PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
0147f198 1854
a96b68b7
FB
1855#undef PCM_CODEC
1856
1857/* dummy raw video codec */
63167088
RS
1858extern AVCodec rawvideo_encoder;
1859extern AVCodec rawvideo_decoder;
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FB
1860
1861/* the following codecs use external GPL libs */
de6d9b64 1862extern AVCodec ac3_decoder;
23c99253 1863extern AVCodec dts_decoder;
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FB
1864
1865/* resample.c */
1866
1867struct ReSampleContext;
aaaf1635 1868struct AVResampleContext;
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FB
1869
1870typedef struct ReSampleContext ReSampleContext;
1871
1872ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1873 int output_rate, int input_rate);
1874int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1875void audio_resample_close(ReSampleContext *s);
1876
aaaf1635
MN
1877struct AVResampleContext *av_resample_init(int out_rate, int in_rate);
1878int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2d48eddd 1879void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
d88443ae 1880void av_resample_close(struct AVResampleContext *c);
aaaf1635 1881
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FB
1882/* YUV420 format is assumed ! */
1883
1884struct ImgReSampleContext;
1885
1886typedef struct ImgReSampleContext ImgReSampleContext;
1887
1888ImgReSampleContext *img_resample_init(int output_width, int output_height,
1889 int input_width, int input_height);
ab6d194a
MN
1890
1891ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1892 int iwidth, int iheight,
1893 int topBand, int bottomBand,
1ff93ffc
TK
1894 int leftBand, int rightBand,
1895 int padtop, int padbottom,
1896 int padleft, int padright);
1897
ab6d194a 1898
de6d9b64 1899void img_resample(ImgReSampleContext *s,
da64ecc3 1900 AVPicture *output, const AVPicture *input);
de6d9b64
FB
1901
1902void img_resample_close(ImgReSampleContext *s);
1903
75917b88
DH
1904/**
1905 * Allocate memory for a picture. Call avpicture_free to free it.
1906 *
1907 * @param picture the picture to be filled in.
1908 * @param pix_fmt the format of the picture.
1909 * @param width the width of the picture.
1910 * @param height the height of the picture.
1911 * @return 0 if successful, -1 if not.
1912 */
1913int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1914
1915/* Free a picture previously allocated by avpicture_alloc. */
1916void avpicture_free(AVPicture *picture);
1917
0c1a9eda 1918int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2d1a4094 1919 int pix_fmt, int width, int height);
da64ecc3 1920int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
63167088 1921 unsigned char *dest, int dest_size);
219b06c6 1922int avpicture_get_size(int pix_fmt, int width, int height);
dab64ebc
FB
1923void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1924const char *avcodec_get_pix_fmt_name(int pix_fmt);
63167088 1925enum PixelFormat avcodec_get_pix_fmt(const char* name);
219b06c6 1926
fab21997
FB
1927#define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1928#define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1929#define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1930#define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1931#define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1932#define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1933
1934int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1935 int has_alpha);
1936int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1937 int has_alpha, int *loss_ptr);
1938
0469baf1
FB
1939#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1940#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
da64ecc3
DH
1941int img_get_alpha_info(const AVPicture *src,
1942 int pix_fmt, int width, int height);
0469baf1 1943
219b06c6
FB
1944/* convert among pixel formats */
1945int img_convert(AVPicture *dst, int dst_pix_fmt,
da64ecc3 1946 const AVPicture *src, int pix_fmt,
219b06c6
FB
1947 int width, int height);
1948
1949/* deinterlace a picture */
da64ecc3 1950int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
de6d9b64
FB
1951 int pix_fmt, int width, int height);
1952
1953/* external high level API */
1954
1955extern AVCodec *first_avcodec;
1956
156e5023 1957/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 1958unsigned avcodec_version(void);
8bceb6af 1959/* returns LIBAVCODEC_BUILD constant */
51a49663 1960unsigned avcodec_build(void);
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FB
1961void avcodec_init(void);
1962
1963void register_avcodec(AVCodec *format);
1964AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 1965AVCodec *avcodec_find_encoder_by_name(const char *name);
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FB
1966AVCodec *avcodec_find_decoder(enum CodecID id);
1967AVCodec *avcodec_find_decoder_by_name(const char *name);
1968void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1969
1e491e29 1970void avcodec_get_context_defaults(AVCodecContext *s);
7ffbb60e 1971AVCodecContext *avcodec_alloc_context(void);
7906085f 1972void avcodec_get_frame_defaults(AVFrame *pic);
492cd3a9 1973AVFrame *avcodec_alloc_frame(void);
1e491e29 1974
492cd3a9
MN
1975int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1976void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
3a569751
MN
1977int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
1978void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
1979enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
1e491e29 1980
5a815088
MN
1981int avcodec_thread_init(AVCodecContext *s, int thread_count);
1982void avcodec_thread_free(AVCodecContext *s);
1983int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
3a569751 1984int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
9c3d33d6
MN
1985//FIXME func typedef
1986
7a06ff14
MN
1987/**
1988 * opens / inits the AVCodecContext.
1989 * not thread save!
1990 */
de6d9b64 1991int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
7a06ff14 1992
0c1a9eda 1993int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 1994 int *frame_size_ptr,
0c1a9eda 1995 uint8_t *buf, int buf_size);
492cd3a9 1996int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 1997 int *got_picture_ptr,
0c1a9eda
ZK
1998 uint8_t *buf, int buf_size);
1999int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
917e06c8 2000 int *data_size_ptr,
0c1a9eda
ZK
2001 uint8_t *buf, int buf_size);
2002int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64 2003 const short *samples);
0c1a9eda 2004int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 2005 const AVFrame *pict);
de6d9b64
FB
2006
2007int avcodec_close(AVCodecContext *avctx);
2008
2009void avcodec_register_all(void);
a96b68b7 2010
1c2a8c7f
MN
2011void avcodec_flush_buffers(AVCodecContext *avctx);
2012
14bea432 2013/* misc usefull functions */
d8085ea7
MN
2014
2015/**
2016 * returns a single letter to describe the picture type
2017 */
2018char av_get_pict_type_char(int pict_type);
2019
14bea432
MN
2020/**
2021 * reduce a fraction.
2022 * this is usefull for framerate calculations
2023 * @param max the maximum allowed for dst_nom & dst_den
2024 * @return 1 if exact, 0 otherwise
2025 */
2026int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2027
2028/**
2029 * rescale a 64bit integer.
2030 * a simple a*b/c isnt possible as it can overflow
2031 */
4c263142 2032int64_t av_rescale(int64_t a, int64_t b, int64_t c);
628d601b 2033
628d601b 2034
e8f14793
ZK
2035/**
2036 * Interface for 0.5.0 version
2037 *
2038 * do not even think about it's usage for this moment
2039 */
2040
2041typedef struct {
64863965 2042 /// compressed size used from given memory buffer
e8f14793
ZK
2043 int size;
2044 /// I/P/B frame type
2045 int frame_type;
2046} avc_enc_result_t;
2047
2048/**
2049 * Commands
2050 * order can't be changed - once it was defined
2051 */
2052typedef enum {
2053 // general commands
2054 AVC_OPEN_BY_NAME = 0xACA000,
2055 AVC_OPEN_BY_CODEC_ID,
2056 AVC_OPEN_BY_FOURCC,
2057 AVC_CLOSE,
2058
2059 AVC_FLUSH,
2060 // pin - struct { uint8_t* src, uint_t src_size }
2061 // pout - struct { AVPicture* img, consumed_bytes,
2062 AVC_DECODE,
2063 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
2064 // pout - uint_t used_from_dest_size
2065 AVC_ENCODE,
2066
2067 // query/get video commands
2068 AVC_GET_VERSION = 0xACB000,
2069 AVC_GET_WIDTH,
2070 AVC_GET_HEIGHT,
2071 AVC_GET_DELAY,
2072 AVC_GET_QUANT_TABLE,
2073 // ...
2074
2075 // query/get audio commands
2076 AVC_GET_FRAME_SIZE = 0xABC000,
2077
2078 // maybe define some simple structure which
2079 // might be passed to the user - but they can't
2080 // contain any codec specific parts and these
2081 // calls are usualy necessary only few times
2082
2083 // set video commands
2084 AVC_SET_WIDTH = 0xACD000,
2085 AVC_SET_HEIGHT,
2086
2087 // set video encoding commands
2088 AVC_SET_FRAME_RATE = 0xACD800,
2089 AVC_SET_QUALITY,
2090 AVC_SET_HURRY_UP,
2091
2092 // set audio commands
2093 AVC_SET_SAMPLE_RATE = 0xACE000,
2094 AVC_SET_CHANNELS,
2095
2096} avc_cmd_t;
2097
2098/**
2099 * \param handle allocated private structure by libavcodec
2100 * for initialization pass NULL - will be returned pout
2101 * user is supposed to know nothing about its structure
2102 * \param cmd type of operation to be performed
2103 * \param pint input parameter
2104 * \param pout output parameter
2105 *
2106 * \returns command status - eventually for query command it might return
2107 * integer resulting value
2108 */
2109int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2110
8424cf50
FB
2111/* frame parsing */
2112typedef struct AVCodecParserContext {
2113 void *priv_data;
2114 struct AVCodecParser *parser;
2115 int64_t frame_offset; /* offset of the current frame */
2116 int64_t cur_offset; /* current offset
2117 (incremented by each av_parser_parse()) */
2118 int64_t last_frame_offset; /* offset of the last frame */
2119 /* video info */
2120 int pict_type; /* XXX: put it back in AVCodecContext */
2121 int repeat_pict; /* XXX: put it back in AVCodecContext */
b84f2a35
FB
2122 int64_t pts; /* pts of the current frame */
2123 int64_t dts; /* dts of the current frame */
2124
2125 /* private data */
2126 int64_t last_pts;
2127 int64_t last_dts;
a62aecce 2128 int fetch_timestamp;
b84f2a35
FB
2129
2130#define AV_PARSER_PTS_NB 4
2131 int cur_frame_start_index;
2132 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2133 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2134 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
8424cf50
FB
2135} AVCodecParserContext;
2136
2137typedef struct AVCodecParser {
2138 int codec_ids[3]; /* several codec IDs are permitted */
2139 int priv_data_size;
2140 int (*parser_init)(AVCodecParserContext *s);
2141 int (*parser_parse)(AVCodecParserContext *s,
2142 AVCodecContext *avctx,
2143 uint8_t **poutbuf, int *poutbuf_size,
2144 const uint8_t *buf, int buf_size);
2145 void (*parser_close)(AVCodecParserContext *s);
2146 struct AVCodecParser *next;
2147} AVCodecParser;
2148
2149extern AVCodecParser *av_first_parser;
2150
2151void av_register_codec_parser(AVCodecParser *parser);
2152AVCodecParserContext *av_parser_init(int codec_id);
2153int av_parser_parse(AVCodecParserContext *s,
2154 AVCodecContext *avctx,
2155 uint8_t **poutbuf, int *poutbuf_size,
b84f2a35
FB
2156 const uint8_t *buf, int buf_size,
2157 int64_t pts, int64_t dts);
8424cf50
FB
2158void av_parser_close(AVCodecParserContext *s);
2159
2160extern AVCodecParser mpegvideo_parser;
2161extern AVCodecParser mpeg4video_parser;
c6148de2 2162extern AVCodecParser h261_parser;
8424cf50
FB
2163extern AVCodecParser h263_parser;
2164extern AVCodecParser h264_parser;
2165extern AVCodecParser mpegaudio_parser;
2166extern AVCodecParser ac3_parser;
2167
544eb99c 2168/* memory */
e4eadb4b 2169void *av_malloc(unsigned int size);
18f77016 2170void *av_mallocz(unsigned int size);
8e1e6f31 2171void *av_realloc(void *ptr, unsigned int size);
544eb99c 2172void av_free(void *ptr);
8e1e6f31 2173char *av_strdup(const char *s);
81c5f887 2174void av_freep(void *ptr);
97d96aaa 2175void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
855ea723
ZK
2176/* for static data only */
2177/* call av_free_static to release all staticaly allocated tables */
628d601b 2178void av_free_static(void);
8d1f2ba5 2179void *av_mallocz_static(unsigned int size);
544eb99c 2180
fc384777
MM
2181/* add by bero : in adx.c */
2182int is_adx(const unsigned char *buf,size_t bufsize);
2183
e1c2a5a0
RT
2184void img_copy(AVPicture *dst, const AVPicture *src,
2185 int pix_fmt, int width, int height);
2186
9b879566
MB
2187/* av_log API */
2188
2189#include <stdarg.h>
2190
d8019eb5 2191#define AV_LOG_QUIET -1
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MB
2192#define AV_LOG_ERROR 0
2193#define AV_LOG_INFO 1
2194#define AV_LOG_DEBUG 2
2195
f4bd8cf0 2196#ifdef __GNUC__
bc874dae 2197extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
f4bd8cf0
MN
2198#else
2199extern void av_log(void*, int level, const char *fmt, ...);
2200#endif
2201
bc874dae 2202extern void av_vlog(void*, int level, const char *fmt, va_list);
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2203extern int av_log_get_level(void);
2204extern void av_log_set_level(int);
bc874dae 2205extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
9b879566 2206
3a278992 2207/* endian macros */
e96682e6 2208#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
3a278992
MM
2209#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2210#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2211 (((uint8_t*)(x))[1] << 16) | \
2212 (((uint8_t*)(x))[2] << 8) | \
2213 ((uint8_t*)(x))[3])
2214#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2215#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2216 (((uint8_t*)(x))[2] << 16) | \
2217 (((uint8_t*)(x))[1] << 8) | \
2218 ((uint8_t*)(x))[0])
e96682e6 2219#endif
3a278992 2220
02d697aa
ZK
2221#ifdef __cplusplus
2222}
2223#endif
2224
a96b68b7 2225#endif /* AVCODEC_H */