lowres fixes for the parser
[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"
4f8a8319 20#define LIBAVCODEC_BUILD 4724
4b1f4f23 21
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22#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
23#define LIBAVCODEC_VERSION FFMPEG_VERSION
24
25#define AV_STRINGIFY(s) AV_TOSTRING(s)
26#define AV_TOSTRING(s) #s
27#define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
ce2749d2 28
2a24fe4c 29#define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
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30#define AV_TIME_BASE 1000000
31
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32enum CodecID {
33 CODEC_ID_NONE,
34 CODEC_ID_MPEG1VIDEO,
dcedf586 35 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
fb364ada 36 CODEC_ID_MPEG2VIDEO_XVMC,
c6148de2 37 CODEC_ID_H261,
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38 CODEC_ID_H263,
39 CODEC_ID_RV10,
68b94c35 40 CODEC_ID_RV20,
de6d9b64 41 CODEC_ID_MP2,
dcedf586 42 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
81e0d0b4 43 CODEC_ID_VORBIS,
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44 CODEC_ID_AC3,
45 CODEC_ID_MJPEG,
b135d9fb 46 CODEC_ID_MJPEGB,
b1e6b355 47 CODEC_ID_LJPEG,
5e83dec4 48 CODEC_ID_SP5X,
bf89e6b1 49 CODEC_ID_MPEG4,
de6d9b64 50 CODEC_ID_RAWVIDEO,
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51 CODEC_ID_MSMPEG4V1,
52 CODEC_ID_MSMPEG4V2,
53 CODEC_ID_MSMPEG4V3,
e1a9dbff 54 CODEC_ID_WMV1,
b50eef3a 55 CODEC_ID_WMV2,
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56 CODEC_ID_H263P,
57 CODEC_ID_H263I,
d4f5d74a 58 CODEC_ID_FLV1,
be8ffec9 59 CODEC_ID_SVQ1,
8b82a956 60 CODEC_ID_SVQ3,
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61 CODEC_ID_DVVIDEO,
62 CODEC_ID_DVAUDIO,
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63 CODEC_ID_WMAV1,
64 CODEC_ID_WMAV2,
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65 CODEC_ID_MACE3,
66 CODEC_ID_MACE6,
11f18faf 67 CODEC_ID_HUFFYUV,
f70f7c6d 68 CODEC_ID_CYUV,
0da71265 69 CODEC_ID_H264,
deabd4fd 70 CODEC_ID_INDEO3,
d86053a4 71 CODEC_ID_VP3,
f44ee2c3 72 CODEC_ID_THEORA,
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73 CODEC_ID_AAC,
74 CODEC_ID_MPEG4AAC,
3d2e8cce 75 CODEC_ID_ASV1,
9b56edf5 76 CODEC_ID_ASV2,
5e20f836 77 CODEC_ID_FFV1,
e2a7bb28 78 CODEC_ID_4XM,
be3564ed 79 CODEC_ID_VCR1,
3aff069b 80 CODEC_ID_CLJR,
c3bf0288 81 CODEC_ID_MDEC,
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82 CODEC_ID_ROQ,
83 CODEC_ID_INTERPLAY_VIDEO,
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84 CODEC_ID_XAN_WC3,
85 CODEC_ID_XAN_WC4,
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86 CODEC_ID_RPZA,
87 CODEC_ID_CINEPAK,
88 CODEC_ID_WS_VQA,
89 CODEC_ID_MSRLE,
90 CODEC_ID_MSVIDEO1,
4120a53a 91 CODEC_ID_IDCIN,
1dc1ed99 92 CODEC_ID_8BPS,
11e29a41 93 CODEC_ID_SMC,
42cad81a 94 CODEC_ID_FLIC,
9a4117d5 95 CODEC_ID_TRUEMOTION1,
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96 CODEC_ID_VMDVIDEO,
97 CODEC_ID_VMDAUDIO,
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98 CODEC_ID_MSZH,
99 CODEC_ID_ZLIB,
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100 CODEC_ID_SONIC,
101 CODEC_ID_SONIC_LS,
070ed1bc 102 CODEC_ID_QTRLE,
791e7b83 103 CODEC_ID_SNOW,
9d53d58e 104 CODEC_ID_TSCC,
d0a0bbd2 105 CODEC_ID_ULTI,
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106
107 /* various pcm "codecs" */
108 CODEC_ID_PCM_S16LE,
109 CODEC_ID_PCM_S16BE,
110 CODEC_ID_PCM_U16LE,
111 CODEC_ID_PCM_U16BE,
112 CODEC_ID_PCM_S8,
113 CODEC_ID_PCM_U8,
114 CODEC_ID_PCM_MULAW,
115 CODEC_ID_PCM_ALAW,
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116
117 /* various adpcm codecs */
118 CODEC_ID_ADPCM_IMA_QT,
119 CODEC_ID_ADPCM_IMA_WAV,
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120 CODEC_ID_ADPCM_IMA_DK3,
121 CODEC_ID_ADPCM_IMA_DK4,
2fdf638b 122 CODEC_ID_ADPCM_IMA_WS,
7d8379f2 123 CODEC_ID_ADPCM_IMA_SMJPEG,
0147f198 124 CODEC_ID_ADPCM_MS,
e2a7bb28 125 CODEC_ID_ADPCM_4XM,
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126 CODEC_ID_ADPCM_XA,
127 CODEC_ID_ADPCM_ADX,
7d8379f2 128 CODEC_ID_ADPCM_EA,
e5966052 129 CODEC_ID_ADPCM_G726,
891f64b3 130
131 /* AMR */
132 CODEC_ID_AMR_NB,
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133 CODEC_ID_AMR_WB,
134
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135 /* RealAudio codecs*/
136 CODEC_ID_RA_144,
137 CODEC_ID_RA_288,
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138
139 /* various DPCM codecs */
140 CODEC_ID_ROQ_DPCM,
141 CODEC_ID_INTERPLAY_DPCM,
9937e686 142 CODEC_ID_XAN_DPCM,
985180a1 143
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144 CODEC_ID_FLAC,
145
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146 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
147 stream (only used by libavformat) */
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148
149 CODEC_ID_DTS,
1ddadfa9 150 CODEC_ID_XVID,
de6d9b64 151};
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152
153/* CODEC_ID_MP3LAME is absolete */
154#define CODEC_ID_MP3LAME CODEC_ID_MP3
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155
156enum CodecType {
4a663d80 157 CODEC_TYPE_UNKNOWN = -1,
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158 CODEC_TYPE_VIDEO,
159 CODEC_TYPE_AUDIO,
985180a1 160 CODEC_TYPE_DATA,
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161};
162
64863965 163/**
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164 * Pixel format. Notes:
165 *
166 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
167 * color is put together as:
168 * (A << 24) | (R << 16) | (G << 8) | B
169 * This is stored as BGRA on little endian CPU architectures and ARGB on
170 * big endian CPUs.
171 *
172 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
173 * image data is stored in AVFrame.data[0]. The palette is transported in
174 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
175 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
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176 * also endian-specific). Note also that the individual RGB palette
177 * components stored in AVFrame.data[1] should be in the range 0..255.
178 * This is important as many custom PAL8 video codecs that were designed
179 * to run on the IBM VGA graphics adapter use 6-bit palette components.
64863965 180 */
de6d9b64 181enum PixelFormat {
cd394651 182 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
ebb177dd 183 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
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184 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
185 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
186 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
187 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
0f371e3e 188 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
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189 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
190 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
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191 PIX_FMT_RGB565, ///< always stored in cpu endianness
192 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
dab64ebc 193 PIX_FMT_GRAY8,
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194 PIX_FMT_MONOWHITE, ///< 0 is white
195 PIX_FMT_MONOBLACK, ///< 0 is black
196 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
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197 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
198 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
199 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
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200 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
201 PIX_FMT_XVMC_MPEG2_IDCT,
ebb177dd 202 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
dab64ebc 203 PIX_FMT_NB,
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204};
205
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206/* currently unused, may be used if 24/32 bits samples ever supported */
207enum SampleFormat {
64863965 208 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
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209};
210
de6d9b64 211/* in bytes */
bc8d1857 212#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
de6d9b64 213
d7425f59 214/**
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215 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
216 * this is mainly needed because some optimized bitstream readers read
217 * 32 or 64 bit at once and could read over the end<br>
218 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
219 * MPEG bitstreams could cause overread and segfault
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220 */
221#define FF_INPUT_BUFFER_PADDING_SIZE 8
222
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223/* motion estimation type, EPZS by default */
224enum Motion_Est_ID {
101bea5f 225 ME_ZERO = 1,
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226 ME_FULL,
227 ME_LOG,
228 ME_PHODS,
229 ME_EPZS,
230 ME_X1
231};
232
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233enum AVRounding {
234 AV_ROUND_ZERO = 0, ///< round toward zero
235 AV_ROUND_INF = 1, ///< round away from zero
236 AV_ROUND_DOWN = 2, ///< round toward -infinity
237 AV_ROUND_UP = 3, ///< round toward +infinity
238 AV_ROUND_NEAR_INF = 5, ///< round to nearest and halfway cases away from zero
239};
240
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241typedef struct RcOverride{
242 int start_frame;
243 int end_frame;
244 int qscale; // if this is 0 then quality_factor will be used instead
245 float quality_factor;
246} RcOverride;
247
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248/* only for ME compatiblity with old apps */
249extern int motion_estimation_method;
250
4e00e76b 251#define FF_MAX_B_FRAMES 8
9dbcbd92 252
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253/* encoding support
254 these flags can be passed in AVCodecContext.flags before initing
255 Note: note not everything is supported yet
256*/
de6d9b64 257
64863965 258#define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
dba019da 259#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
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260#define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
261#define CODEC_FLAG_GMC 0x0020 ///< use GMC
ca7d05d5 262#define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
64863965 263#define CODEC_FLAG_PART 0x0080 ///< use data partitioning
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264/* parent program gurantees that the input for b-frame containing streams is not written to
265 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
8b4c7dbc 266#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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267#define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
268#define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
269#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
270#define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
271#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
272#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
273#define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
d7425f59 274 of only at frame boundaries */
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275#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
276#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
3bb07d61 277#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
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278#define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
279#define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
280#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
281#define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
21e59552 282/* Fx : Flag for h263+ extra options */
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283#define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
284#define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
64863965 285#define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
f2f6134b 286#define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
1f26c6f3 287#define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
dba019da 288#define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
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289#define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
290#define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
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291#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
292#define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
baaf3f46 293#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
303e50e6 294#define CODEC_FLAG_CLOSED_GOP 0x80000000
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295#define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
296
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297/* Unsupported options :
298 * Syntax Arithmetic coding (SAC)
21e59552 299 * Reference Picture Selection
ba58dabc 300 * Independant Segment Decoding */
21e59552 301/* /Fx */
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302/* codec capabilities */
303
64863965 304#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
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305/**
306 * Codec uses get_buffer() for allocating buffers.
307 * direct rendering method 1
308 */
309#define CODEC_CAP_DR1 0x0002
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310/* if 'parse_only' field is true, then avcodec_parse_frame() can be
311 used */
312#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 313#define CODEC_CAP_TRUNCATED 0x0008
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314/* codec can export data for HW decoding (XvMC) */
315#define CODEC_CAP_HWACCEL 0x0010
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316/** codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data */
317#define CODEC_CAP_DELAY 0x0020
bf89e6b1 318
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319//the following defines might change, so dont expect compatibility if u use them
320#define MB_TYPE_INTRA4x4 0x0001
321#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
322#define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
323#define MB_TYPE_16x16 0x0008
324#define MB_TYPE_16x8 0x0010
325#define MB_TYPE_8x16 0x0020
326#define MB_TYPE_8x8 0x0040
327#define MB_TYPE_INTERLACED 0x0080
328#define MB_TYPE_DIRECT2 0x0100 //FIXME
329#define MB_TYPE_ACPRED 0x0200
330#define MB_TYPE_GMC 0x0400
331#define MB_TYPE_SKIP 0x0800
332#define MB_TYPE_P0L0 0x1000
333#define MB_TYPE_P1L0 0x2000
334#define MB_TYPE_P0L1 0x4000
335#define MB_TYPE_P1L1 0x8000
336#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
337#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
338#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
339#define MB_TYPE_QUANT 0x00010000
340#define MB_TYPE_CBP 0x00020000
341//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
342
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343/**
344 * Pan Scan area.
345 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
346 */
347typedef struct AVPanScan{
348 /**
349 * id.
350 * - encoding: set by user.
351 * - decoding: set by lavc
352 */
353 int id;
354
355 /**
356 * width and height in 1/16 pel
357 * - encoding: set by user.
358 * - decoding: set by lavc
359 */
360 int width;
361 int height;
362
363 /**
364 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
365 * - encoding: set by user.
366 * - decoding: set by lavc
367 */
368 int16_t position[3][2];
369}AVPanScan;
370
492cd3a9 371#define FF_COMMON_FRAME \
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372 /**\
373 * pointer to the picture planes.\
374 * this might be different from the first allocated byte\
375 * - encoding: \
376 * - decoding: \
377 */\
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378 uint8_t *data[4];\
379 int linesize[4];\
380 /**\
32db2b1d 381 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
1e491e29 382 * this isnt used by lavc unless the default get/release_buffer() is used\
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383 * - encoding: \
384 * - decoding: \
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385 */\
386 uint8_t *base[4];\
387 /**\
388 * 1 -> keyframe, 0-> not\
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389 * - encoding: set by lavc\
390 * - decoding: set by lavc\
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391 */\
392 int key_frame;\
393\
394 /**\
0da71265 395 * picture type of the frame, see ?_TYPE below.\
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396 * - encoding: set by lavc for coded_picture (and set by user for input)\
397 * - decoding: set by lavc\
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398 */\
399 int pict_type;\
400\
401 /**\
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402 * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
403 * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
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404 * - encoding: MUST be set by user\
405 * - decoding: set by lavc\
1e491e29 406 */\
be6784dc 407 int64_t pts;\
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408\
409 /**\
410 * picture number in bitstream order.\
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411 * - encoding: set by\
412 * - decoding: set by lavc\
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413 */\
414 int coded_picture_number;\
415 /**\
1e491e29 416 * picture number in display order.\
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417 * - encoding: set by\
418 * - decoding: set by lavc\
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419 */\
420 int display_picture_number;\
421\
422 /**\
158c7f05 423 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
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424 * - encoding: set by lavc for coded_picture (and set by user for input)\
425 * - decoding: set by lavc\
1e491e29 426 */\
158c7f05 427 int quality; \
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428\
429 /**\
430 * buffer age (1->was last buffer and dint change, 2->..., ...).\
158c7f05 431 * set to INT_MAX if the buffer has not been used yet \
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432 * - encoding: unused\
433 * - decoding: MUST be set by get_buffer()\
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434 */\
435 int age;\
436\
437 /**\
438 * is this picture used as reference\
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439 * - encoding: unused\
440 * - decoding: set by lavc (before get_buffer() call))\
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441 */\
442 int reference;\
443\
444 /**\
445 * QP table\
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446 * - encoding: unused\
447 * - decoding: set by lavc\
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448 */\
449 int8_t *qscale_table;\
450 /**\
451 * QP store stride\
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452 * - encoding: unused\
453 * - decoding: set by lavc\
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454 */\
455 int qstride;\
456\
457 /**\
458 * mbskip_table[mb]>=1 if MB didnt change\
459 * stride= mb_width = (width+15)>>4\
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460 * - encoding: unused\
461 * - decoding: set by lavc\
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462 */\
463 uint8_t *mbskip_table;\
464\
465 /**\
8d7ec294 466 * Motion vector table\
a4d36c11 467 * - encoding: set by user\
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468 * - decoding: set by lavc\
469 */\
470 int16_t (*motion_val[2])[2];\
471\
472 /**\
473 * Macroblock type table\
474 * mb_type_base + mb_width + 2\
a4d36c11 475 * - encoding: set by user\
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476 * - decoding: set by lavc\
477 */\
478 uint32_t *mb_type;\
479\
480 /**\
481 * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
482 * - encoding: unused\
483 * - decoding: set by lavc\
484 */\
485 uint8_t motion_subsample_log2;\
486\
487 /**\
1e491e29 488 * for some private data of the user\
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489 * - encoding: unused\
490 * - decoding: set by user\
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491 */\
492 void *opaque;\
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493\
494 /**\
495 * error\
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496 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
497 * - decoding: unused\
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498 */\
499 uint64_t error[4];\
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500\
501 /**\
502 * type of the buffer (to keep track of who has to dealloc data[*])\
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503 * - encoding: set by the one who allocs it\
504 * - decoding: set by the one who allocs it\
3db320ea 505 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
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506 */\
507 int type;\
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508 \
509 /**\
510 * when decoding, this signal how much the picture must be delayed.\
511 * extra_delay = repeat_pict / (2*fps)\
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512 * - encoding: unused\
513 * - decoding: set by lavc\
2ec23b6d 514 */\
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515 int repeat_pict;\
516 \
517 /**\
518 * \
519 */\
520 int qscale_type;\
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521 \
522 /**\
523 * The content of the picture is interlaced.\
524 * - encoding: set by user\
525 * - decoding: set by lavc (default 0)\
526 */\
527 int interlaced_frame;\
528 \
529 /**\
9dad924e 530 * if the content is interlaced, is top field displayed first.\
2744ca9a 531 * - encoding: set by user\
9dad924e 532 * - decoding: set by lavc\
2744ca9a 533 */\
9dad924e 534 int top_field_first;\
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535 \
536 /**\
537 * Pan scan.\
538 * - encoding: set by user\
539 * - decoding: set by lavc\
540 */\
541 AVPanScan *pan_scan;\
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542 \
543 /**\
544 * tell user application that palette has changed from previous frame.\
545 * - encoding: ??? (no palette-enabled encoder yet)\
546 * - decoding: set by lavc (default 0)\
547 */\
548 int palette_has_changed;\
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549 \
550 /**\
551 * Codec suggestion on buffer type if != 0\
552 * - encoding: unused\
553 * - decoding: set by lavc (before get_buffer() call))\
554 */\
555 int buffer_hints;\
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556\
557 /**\
558 * DCT coeffitients\
559 * - encoding: unused\
560 * - decoding: set by lavc\
561 */\
562 short *dct_coeff;\
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563\
564 /**\
565 * Motion referece frame index\
566 * - encoding: set by user\
567 * - decoding: set by lavc\
568 */\
569 int8_t *ref_index[2];
2ec23b6d 570
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571#define FF_QSCALE_TYPE_MPEG1 0
572#define FF_QSCALE_TYPE_MPEG2 1
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573
574#define FF_BUFFER_TYPE_INTERNAL 1
9b56edf5 575#define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
a4d36c11 576#define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
9b56edf5 577#define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
4e00e76b 578
1e491e29 579
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580#define FF_I_TYPE 1 // Intra
581#define FF_P_TYPE 2 // Predicted
582#define FF_B_TYPE 3 // Bi-dir predicted
583#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
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584#define FF_SI_TYPE 5
585#define FF_SP_TYPE 6
1e491e29 586
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587#define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
588#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
589#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
590#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
591
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592/**
593 * Audio Video Frame.
594 */
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595typedef struct AVFrame {
596 FF_COMMON_FRAME
597} AVFrame;
1e491e29 598
14bea432 599#define DEFAULT_FRAME_RATE_BASE 1001000
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600
601/**
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602 * Used by av_log
603 */
604typedef struct AVCLASS AVClass;
605struct AVCLASS {
606 const char* class_name;
607 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
608 or AVFormatContext, which begin with an AVClass.
609 Needed because av_log is in libavcodec and has no visibility
610 of AVIn/OutputFormat */
611};
612
613/**
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614 * main external api structure.
615 */
de6d9b64 616typedef struct AVCodecContext {
b71901e6 617 /**
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618 * Info on struct for av_log
619 * - set by avcodec_alloc_context
620 */
43465395 621 AVClass *av_class;
bc874dae 622 /**
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623 * the average bitrate.
624 * - encoding: set by user. unused for constant quantizer encoding
625 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
b71901e6 626 */
de6d9b64 627 int bit_rate;
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628
629 /**
64863965 630 * number of bits the bitstream is allowed to diverge from the reference.
b71901e6 631 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
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632 * - encoding: set by user. unused for constant quantizer encoding
633 * - decoding: unused
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634 */
635 int bit_rate_tolerance;
636
637 /**
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638 * CODEC_FLAG_*.
639 * - encoding: set by user.
640 * - decoding: set by user.
b71901e6 641 */
de6d9b64 642 int flags;
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643
644 /**
645 * some codecs needs additionnal format info. It is stored here
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646 * - encoding: set by user.
647 * - decoding: set by lavc. (FIXME is this ok?)
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648 */
649 int sub_id;
650
651 /**
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652 * motion estimation algorithm used for video coding.
653 * - encoding: MUST be set by user.
654 * - decoding: unused
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655 */
656 int me_method;
657
658 /**
64863965 659 * some codecs need / can use extra-data like huffman tables.
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660 * mjpeg: huffman tables
661 * rv10: additional flags
b704e742 662 * mpeg4: global headers (they can be in the bitstream or here)
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663 * - encoding: set/allocated/freed by lavc.
664 * - decoding: set/allocated/freed by user.
b71901e6 665 */
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666 void *extradata;
667 int extradata_size;
668
de6d9b64 669 /* video only */
b71901e6 670 /**
14bea432 671 * frames per sec multiplied by frame_rate_base.
b71901e6 672 * for variable fps this is the precission, so if the timestamps
14bea432 673 * can be specified in msec precssion then this is 1000*frame_rate_base
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674 * - encoding: MUST be set by user
675 * - decoding: set by lavc. 0 or the frame_rate if available
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676 */
677 int frame_rate;
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678
679 /**
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680 * width / height.
681 * - encoding: MUST be set by user.
95831f48 682 * - decoding: set by user if known, codec should override / dynamically change if needed
b71901e6 683 */
de6d9b64 684 int width, height;
b71901e6 685
e769f053 686#define FF_ASPECT_EXTENDED 15
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687
688 /**
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689 * the number of pictures in a group of pitures, or 0 for intra_only.
690 * - encoding: set by user.
691 * - decoding: unused
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692 */
693 int gop_size;
694
695 /**
64863965 696 * pixel format, see PIX_FMT_xxx.
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697 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
698 * conversion is in order. This only works for
699 * codecs with one supported pix_fmt, we should
700 * do something for a generic case as well.
64863965 701 * - decoding: set by lavc.
b71901e6 702 */
e4eadb4b 703 enum PixelFormat pix_fmt;
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704
705 /**
706 * Frame rate emulation. If not zero lower layer (i.e. format handler)
707 * has to read frames at native frame rate.
708 * - encoding: set by user.
709 * - decoding: unused.
710 */
711 int rate_emu;
712
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713 /**
714 * if non NULL, 'draw_horiz_band' is called by the libavcodec
715 * decoder to draw an horizontal band. It improve cache usage. Not
716 * all codecs can do that. You must check the codec capabilities
717 * before
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718 * - encoding: unused
719 * - decoding: set by user.
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720 * @param height the height of the slice
721 * @param y the y position of the slice
722 * @param type 1->top field, 2->bottom field, 3->frame
723 * @param offset offset into the AVFrame.data from which the slice should be read
b71901e6 724 */
bf89e6b1 725 void (*draw_horiz_band)(struct AVCodecContext *s,
da64ecc3 726 const AVFrame *src, int offset[4],
3bb07d61 727 int y, int type, int height);
bf89e6b1 728
de6d9b64 729 /* audio only */
64863965 730 int sample_rate; ///< samples per sec
de6d9b64 731 int channels;
64863965 732 int sample_fmt; ///< sample format, currenly unused
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733
734 /* the following data should not be initialized */
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735 int frame_size; ///< in samples, initialized when calling 'init'
736 int frame_number; ///< audio or video frame number
737 int real_pict_num; ///< returns the real picture number of previous encoded frame
1e491e29 738
b71901e6 739 /**
b71901e6 740 * number of frames the decoded output will be delayed relative to
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741 * the encoded input.
742 * - encoding: set by lavc.
743 * - decoding: unused
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744 */
745 int delay;
1ff662cc 746
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747 /* - encoding parameters */
748 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
749 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
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750
751 /**
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752 * minimum quantizer.
753 * - encoding: set by user.
754 * - decoding: unused
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755 */
756 int qmin;
757
758 /**
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759 * maximum quantizer.
760 * - encoding: set by user.
761 * - decoding: unused
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762 */
763 int qmax;
764
765 /**
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766 * maximum quantizer difference etween frames.
767 * - encoding: set by user.
768 * - decoding: unused
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769 */
770 int max_qdiff;
771
772 /**
64863965 773 * maximum number of b frames between non b frames.
b71901e6 774 * note: the output will be delayed by max_b_frames+1 relative to the input
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775 * - encoding: set by user.
776 * - decoding: unused
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777 */
778 int max_b_frames;
779
780 /**
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781 * qscale factor between ip and b frames.
782 * - encoding: set by user.
783 * - decoding: unused
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784 */
785 float b_quant_factor;
786
787 /** obsolete FIXME remove */
788 int rc_strategy;
8b4c7dbc 789 int b_frame_strategy;
9dbcbd92 790
b71901e6 791 /**
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792 * hurry up amount.
793 * - encoding: unused
794 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
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795 */
796 int hurry_up;
2417652e 797
de6d9b64 798 struct AVCodec *codec;
b71901e6 799
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800 void *priv_data;
801
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802 /* unused, FIXME remove*/
803 int rtp_mode;
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804
805 int rtp_payload_size; /* The size of the RTP payload, the coder will */
806 /* do it's best to deliver a chunk with size */
807 /* below rtp_payload_size, the chunk will start */
808 /* with a start code on some codecs like H.263 */
809 /* This doesn't take account of any particular */
810 /* headers inside the transmited RTP payload */
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811
812
813 /* The RTP callcack: This function is called */
814 /* every time the encoder as a packet to send */
815 /* Depends on the encoder if the data starts */
816 /* with a Start Code (it should) H.263 does */
a7fcb3ea 817 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number);
81401c1f 818
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819 /* statistics, used for 2-pass encoding */
820 int mv_bits;
821 int header_bits;
822 int i_tex_bits;
823 int p_tex_bits;
824 int i_count;
825 int p_count;
826 int skip_count;
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827 int misc_bits;
828
829 /**
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830 * number of bits used for the previously encoded frame.
831 * - encoding: set by lavc
7004ffb3 832 * - decoding: unused
b71901e6 833 */
098eefe1 834 int frame_bits;
7004ffb3 835
b71901e6 836 /**
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837 * private data of the user, can be used to carry app specific stuff.
838 * - encoding: set by user
839 * - decoding: set by user
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840 */
841 void *opaque;
842
de6d9b64 843 char codec_name[32];
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PG
844 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
845 enum CodecID codec_id; /* see CODEC_ID_xxx */
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MN
846
847 /**
848 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
849 * this is used to workaround some encoder bugs
bd5a6020 850 * - encoding: set by user, if not then the default based on codec_id will be used
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851 * - decoding: set by user, will be converted to upper case by lavc during init
852 */
853 unsigned int codec_tag;
92ba5ffb 854
b71901e6 855 /**
64863965
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856 * workaround bugs in encoders which sometimes cannot be detected automatically.
857 * - encoding: unused
858 * - decoding: set by user
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859 */
860 int workaround_bugs;
64863965 861#define FF_BUG_AUTODETECT 1 ///< autodetection
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862#define FF_BUG_OLD_MSMPEG4 2
863#define FF_BUG_XVID_ILACE 4
864#define FF_BUG_UMP4 8
865#define FF_BUG_NO_PADDING 16
3116cb14 866#define FF_BUG_AMV 32
ac0c6638 867#define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
03e93d35 868#define FF_BUG_QPEL_CHROMA 64
db794953 869#define FF_BUG_STD_QPEL 128
36df8805 870#define FF_BUG_QPEL_CHROMA2 256
c40c3482 871#define FF_BUG_DIRECT_BLOCKSIZE 512
1c6dcb0f 872#define FF_BUG_EDGE 1024
b44bdf7e 873#define FF_BUG_HPEL_CHROMA 2048
4ccde216 874#define FF_BUG_DC_CLIP 4096
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875//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
876
b71901e6 877 /**
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878 * luma single coeff elimination threshold.
879 * - encoding: set by user
880 * - decoding: unused
b71901e6 881 */
1f6b6e50 882 int luma_elim_threshold;
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883
884 /**
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885 * chroma single coeff elimination threshold.
886 * - encoding: set by user
887 * - decoding: unused
b71901e6 888 */
1f6b6e50 889 int chroma_elim_threshold;
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890
891 /**
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892 * strictly follow the std (MPEG4, ...).
893 * - encoding: set by user
894 * - decoding: unused
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895 */
896 int strict_std_compliance;
897
898 /**
64863965 899 * qscale offset between ip and b frames.
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900 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
901 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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902 * - encoding: set by user.
903 * - decoding: unused
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904 */
905 float b_quant_offset;
906
907 /**
ce3bcaed 908 * error resilience higher values will detect more errors but may missdetect
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909 * some more or less valid parts as errors.
910 * - encoding: unused
911 * - decoding: set by user
b71901e6 912 */
1f6b6e50 913 int error_resilience;
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914#define FF_ER_CAREFULL 1
915#define FF_ER_COMPLIANT 2
916#define FF_ER_AGGRESSIVE 3
917#define FF_ER_VERY_AGGRESSIVE 4
ae72cda6 918
6b72ac63 919 /**
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920 * called at the beginning of each frame to get a buffer for it.
921 * if pic.reference is set then the frame will be read later by lavc
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922 * avcodec_align_dimensions() should be used to find the required width and
923 * height, as they normally need to be rounded up to the next multiple of 16
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924 * - encoding: unused
925 * - decoding: set by lavc, user can override
b71901e6 926 */
492cd3a9 927 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
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928
929 /**
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930 * called to release buffers which where allocated with get_buffer.
931 * a released buffer can be reused in get_buffer()
932 * pic.data[*] must be set to NULL
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933 * - encoding: unused
934 * - decoding: set by lavc, user can override
b71901e6 935 */
492cd3a9 936 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
0fd90455 937
b71901e6 938 /**
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939 * if 1 the stream has a 1 frame delay during decoding.
940 * - encoding: set by lavc
64863965 941 * - decoding: set by lavc
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942 */
943 int has_b_frames;
b71901e6 944
64863965 945 int block_align; ///< used by some WAV based audio codecs
ce980a95 946
64863965 947 int parse_only; /* - decoding only: if true, only parsing is done
917e06c8
FB
948 (function avcodec_parse_frame()). The frame
949 data is returned. Only MPEG codecs support this now. */
ce980a95 950
b71901e6 951 /**
e4eadb4b 952 * 0-> h263 quant 1-> mpeg quant.
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953 * - encoding: set by user.
954 * - decoding: unused
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955 */
956 int mpeg_quant;
ce980a95 957
b71901e6 958 /**
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959 * pass1 encoding statistics output buffer.
960 * - encoding: set by lavc
961 * - decoding: unused
b71901e6 962 */
64863965 963 char *stats_out;
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964
965 /**
966 * pass2 encoding statistics input buffer.
967 * concatenated stuff from stats_out of pass1 should be placed here
64863965
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968 * - encoding: allocated/set/freed by user
969 * - decoding: unused
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970 */
971 char *stats_in;
972
973 /**
64863965 974 * ratecontrol qmin qmax limiting method.
b71901e6 975 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
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976 * - encoding: set by user.
977 * - decoding: unused
b71901e6 978 */
ce980a95 979 float rc_qsquish;
b71901e6 980
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981 float rc_qmod_amp;
982 int rc_qmod_freq;
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983
984 /**
64863965
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985 * ratecontrol override, see RcOverride.
986 * - encoding: allocated/set/freed by user.
987 * - decoding: unused
b71901e6 988 */
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989 RcOverride *rc_override;
990 int rc_override_count;
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991
992 /**
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993 * rate control equation.
994 * - encoding: set by user
995 * - decoding: unused
b71901e6 996 */
ce980a95 997 char *rc_eq;
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998
999 /**
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1000 * maximum bitrate.
1001 * - encoding: set by user.
1002 * - decoding: unused
b71901e6 1003 */
ce980a95 1004 int rc_max_rate;
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1005
1006 /**
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1007 * minimum bitrate.
1008 * - encoding: set by user.
1009 * - decoding: unused
b71901e6 1010 */
ce980a95 1011 int rc_min_rate;
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1012
1013 /**
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1014 * decoder bitstream buffer size.
1015 * - encoding: set by user.
1016 * - decoding: unused
b71901e6 1017 */
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1018 int rc_buffer_size;
1019 float rc_buffer_aggressivity;
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1020
1021 /**
64863965 1022 * qscale factor between p and i frames.
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1023 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1024 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
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1025 * - encoding: set by user.
1026 * - decoding: unused
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1027 */
1028 float i_quant_factor;
1029
1030 /**
64863965 1031 * qscale offset between p and i frames.
64863965
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1032 * - encoding: set by user.
1033 * - decoding: unused
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1034 */
1035 float i_quant_offset;
1036
1037 /**
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1038 * initial complexity for pass1 ratecontrol.
1039 * - encoding: set by user.
1040 * - decoding: unused
b71901e6 1041 */
ce980a95 1042 float rc_initial_cplx;
917e06c8 1043
b71901e6 1044 /**
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1045 * dct algorithm, see FF_DCT_* below.
1046 * - encoding: set by user
1047 * - decoding: unused
b71901e6 1048 */
28db7fce 1049 int dct_algo;
c7e07931 1050#define FF_DCT_AUTO 0
28db7fce 1051#define FF_DCT_FASTINT 1
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1052#define FF_DCT_INT 2
1053#define FF_DCT_MMX 3
1054#define FF_DCT_MLIB 4
05c4072b 1055#define FF_DCT_ALTIVEC 5
65e4c8c9 1056#define FF_DCT_FAAN 6
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1057
1058 /**
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1059 * luminance masking (0-> disabled).
1060 * - encoding: set by user
1061 * - decoding: unused
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1062 */
1063 float lumi_masking;
1064
1065 /**
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MN
1066 * temporary complexity masking (0-> disabled).
1067 * - encoding: set by user
1068 * - decoding: unused
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1069 */
1070 float temporal_cplx_masking;
1071
1072 /**
64863965
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1073 * spatial complexity masking (0-> disabled).
1074 * - encoding: set by user
1075 * - decoding: unused
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1076 */
1077 float spatial_cplx_masking;
1078
1079 /**
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1080 * p block masking (0-> disabled).
1081 * - encoding: set by user
1082 * - decoding: unused
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1083 */
1084 float p_masking;
15415af4 1085
5e746b99 1086 /**
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1087 * darkness masking (0-> disabled).
1088 * - encoding: set by user
1089 * - decoding: unused
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1090 */
1091 float dark_masking;
0c2dd16e 1092
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1093
1094 /* for binary compatibility */
1095 int unused;
1096
0c2dd16e 1097 /**
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1098 * idct algorithm, see FF_IDCT_* below.
1099 * - encoding: set by user
1100 * - decoding: set by user
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1101 */
1102 int idct_algo;
1103#define FF_IDCT_AUTO 0
1104#define FF_IDCT_INT 1
1105#define FF_IDCT_SIMPLE 2
1106#define FF_IDCT_SIMPLEMMX 3
1107#define FF_IDCT_LIBMPEG2MMX 4
1108#define FF_IDCT_PS2 5
1109#define FF_IDCT_MLIB 6
1110#define FF_IDCT_ARM 7
05c4072b 1111#define FF_IDCT_ALTIVEC 8
b82cdc72 1112#define FF_IDCT_SH4 9
bd7d1ea7 1113#define FF_IDCT_SIMPLEARM 10
2ad1516a 1114
144f0625 1115 /**
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1116 * slice count.
1117 * - encoding: set by lavc
1118 * - decoding: set by user (or 0)
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1119 */
1120 int slice_count;
1121 /**
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1122 * slice offsets in the frame in bytes.
1123 * - encoding: set/allocated by lavc
1124 * - decoding: set/allocated by user (or NULL)
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1125 */
1126 int *slice_offset;
1127
4d2858de 1128 /**
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1129 * error concealment flags.
1130 * - encoding: unused
1131 * - decoding: set by user
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1132 */
1133 int error_concealment;
1134#define FF_EC_GUESS_MVS 1
1135#define FF_EC_DEBLOCK 2
1136
6b72ac63 1137 /**
bec89a84 1138 * dsp_mask could be add used to disable unwanted CPU features
8350df97 1139 * CPU features (i.e. MMX, SSE. ...)
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1140 *
1141 * with FORCE flag you may instead enable given CPU features
1142 * (Dangerous: usable in case of misdetection, improper usage however will
1143 * result into program crash)
1144 */
1145 unsigned dsp_mask;
1146#define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1147 /* lower 16 bits - CPU features */
1148#ifdef HAVE_MMX
1149#define FF_MM_MMX 0x0001 /* standard MMX */
1150#define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1151#define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1152#define FF_MM_SSE 0x0008 /* SSE functions */
1153#define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1154#endif /* HAVE_MMX */
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1155
1156 /**
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1157 * bits per sample/pixel from the demuxer (needed for huffyuv).
1158 * - encoding: set by lavc
1159 * - decoding: set by user
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1160 */
1161 int bits_per_sample;
1162
1163 /**
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1164 * prediction method (needed for huffyuv).
1165 * - encoding: set by user
1166 * - decoding: unused
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1167 */
1168 int prediction_method;
1169#define FF_PRED_LEFT 0
1170#define FF_PRED_PLANE 1
1171#define FF_PRED_MEDIAN 2
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1172
1173 /**
5ff85f1d 1174 * sample aspect ratio (0 if unknown).
1f26c6f3 1175 * numerator and denominator must be relative prime and smaller then 256 for some video standards
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1176 * - encoding: set by user.
1177 * - decoding: set by lavc.
5d3cea3a 1178 */
5ff85f1d 1179 AVRational sample_aspect_ratio;
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1180
1181 /**
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1182 * the picture in the bitstream.
1183 * - encoding: set by lavc
1184 * - decoding: set by lavc
1e491e29 1185 */
492cd3a9 1186 AVFrame *coded_frame;
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1187
1188 /**
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1189 * debug.
1190 * - encoding: set by user.
1191 * - decoding: set by user.
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1192 */
1193 int debug;
1194#define FF_DEBUG_PICT_INFO 1
1195#define FF_DEBUG_RC 2
1196#define FF_DEBUG_BITSTREAM 4
1197#define FF_DEBUG_MB_TYPE 8
1198#define FF_DEBUG_QP 16
1199#define FF_DEBUG_MV 32
8289c6fa 1200#define FF_DEBUG_DCT_COEFF 0x00000040
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1201#define FF_DEBUG_SKIP 0x00000080
1202#define FF_DEBUG_STARTCODE 0x00000100
1203#define FF_DEBUG_PTS 0x00000200
46b4feec 1204#define FF_DEBUG_ER 0x00000400
0da71265 1205#define FF_DEBUG_MMCO 0x00000800
8fc6c2b5 1206#define FF_DEBUG_BUGS 0x00001000
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1207#define FF_DEBUG_VIS_QP 0x00002000
1208#define FF_DEBUG_VIS_MB_TYPE 0x00004000
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1209
1210 /**
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1211 * debug.
1212 * - encoding: set by user.
1213 * - decoding: set by user.
1214 */
1215 int debug_mv;
1216#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1217#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1218#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1219
1220 /**
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1221 * error.
1222 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1223 * - decoding: unused
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1224 */
1225 uint64_t error[4];
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1226
1227 /**
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1228 * minimum MB quantizer.
1229 * - encoding: set by user.
1230 * - decoding: unused
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1231 */
1232 int mb_qmin;
1233
1234 /**
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1235 * maximum MB quantizer.
1236 * - encoding: set by user.
1237 * - decoding: unused
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1238 */
1239 int mb_qmax;
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1240
1241 /**
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1242 * motion estimation compare function.
1243 * - encoding: set by user.
1244 * - decoding: unused
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1245 */
1246 int me_cmp;
1247 /**
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1248 * subpixel motion estimation compare function.
1249 * - encoding: set by user.
1250 * - decoding: unused
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1251 */
1252 int me_sub_cmp;
1253 /**
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1254 * macroblock compare function (not supported yet).
1255 * - encoding: set by user.
1256 * - decoding: unused
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1257 */
1258 int mb_cmp;
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1259 /**
1260 * interlaced dct compare function
1261 * - encoding: set by user.
1262 * - decoding: unused
1263 */
1264 int ildct_cmp;
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1265#define FF_CMP_SAD 0
1266#define FF_CMP_SSE 1
1267#define FF_CMP_SATD 2
1268#define FF_CMP_DCT 3
1269#define FF_CMP_PSNR 4
1270#define FF_CMP_BIT 5
1271#define FF_CMP_RD 6
1272#define FF_CMP_ZERO 7
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1273#define FF_CMP_VSAD 8
1274#define FF_CMP_VSSE 9
e6a2ac34 1275#define FF_CMP_NSSE 10
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1276#define FF_CMP_W53 11
1277#define FF_CMP_W97 12
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1278#define FF_CMP_CHROMA 256
1279
1280 /**
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1281 * ME diamond size & shape.
1282 * - encoding: set by user.
1283 * - decoding: unused
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1284 */
1285 int dia_size;
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1286
1287 /**
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1288 * amount of previous MV predictors (2a+1 x 2a+1 square).
1289 * - encoding: set by user.
1290 * - decoding: unused
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1291 */
1292 int last_predictor_count;
70ac76c0 1293
f5fb6b34 1294 /**
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1295 * pre pass for motion estimation.
1296 * - encoding: set by user.
1297 * - decoding: unused
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1298 */
1299 int pre_me;
b07a5980 1300
70ac76c0 1301 /**
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1302 * motion estimation pre pass compare function.
1303 * - encoding: set by user.
1304 * - decoding: unused
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1305 */
1306 int me_pre_cmp;
826f429a 1307
70ac76c0 1308 /**
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1309 * ME pre pass diamond size & shape.
1310 * - encoding: set by user.
1311 * - decoding: unused
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1312 */
1313 int pre_dia_size;
1314
826f429a 1315 /**
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1316 * subpel ME quality.
1317 * - encoding: set by user.
1318 * - decoding: unused
826f429a
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1319 */
1320 int me_subpel_quality;
1321
a33c7159 1322 /**
64863965 1323 * callback to negotiate the pixelFormat.
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1324 * @param fmt is the list of formats which are supported by the codec,
1325 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1326 * the first is allways the native one
1327 * @return the choosen format
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1328 * - encoding: unused
1329 * - decoding: set by user, if not set then the native format will always be choosen
a33c7159 1330 */
494c56d3 1331 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
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1332
1333 /**
1334 * DTG active format information (additionnal aspect ratio
1335 * information only used in DVB MPEG2 transport streams). 0 if
1336 * not set.
1337 *
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1338 * - encoding: unused.
1339 * - decoding: set by decoder
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FB
1340 */
1341 int dtg_active_format;
1342#define FF_DTG_AFD_SAME 8
1343#define FF_DTG_AFD_4_3 9
1344#define FF_DTG_AFD_16_9 10
1345#define FF_DTG_AFD_14_9 11
1346#define FF_DTG_AFD_4_3_SP_14_9 13
1347#define FF_DTG_AFD_16_9_SP_14_9 14
1348#define FF_DTG_AFD_SP_4_3 15
1349
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MN
1350 /**
1351 * Maximum motion estimation search range in subpel units.
1352 * if 0 then no limit
1353 *
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1354 * - encoding: set by user.
1355 * - decoding: unused.
ebbcdc9a 1356 */
59e0ac8e 1357 int me_range;
ebbcdc9a 1358
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1359 /**
1360 * frame_rate_base.
1361 * for variable fps this is 1
1362 * - encoding: set by user.
1363 * - decoding: set by lavc.
1364 * @todo move this after frame_rate
1365 */
65f7062d 1366
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1367 int frame_rate_base;
1368 /**
1369 * intra quantizer bias.
1370 * - encoding: set by user.
1371 * - decoding: unused
1372 */
1373 int intra_quant_bias;
1374#define FF_DEFAULT_QUANT_BIAS 999999
1375
1376 /**
1377 * inter quantizer bias.
1378 * - encoding: set by user.
1379 * - decoding: unused
1380 */
1381 int inter_quant_bias;
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1382
1383 /**
1384 * color table ID.
1385 * - encoding: unused.
1386 * - decoding: which clrtable should be used for 8bit RGB images
1387 * table have to be stored somewhere FIXME
1388 */
1389 int color_table_id;
1984f635 1390
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MN
1391 /**
1392 * internal_buffer count.
1393 * Dont touch, used by lavc default_get_buffer()
1394 */
1395 int internal_buffer_count;
1396
1397 /**
1398 * internal_buffers.
1399 * Dont touch, used by lavc default_get_buffer()
1400 */
1401 void *internal_buffer;
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1402
1403#define FF_LAMBDA_SHIFT 7
1404#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1405#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1406#define FF_LAMBDA_MAX (256*128-1)
1407
1408#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
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1409 /**
1410 * global quality for codecs which cannot change it per frame.
1411 * this should be proportional to MPEG1/2/4 qscale.
1412 * - encoding: set by user.
1413 * - decoding: unused
1414 */
1415 int global_quality;
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1416
1417#define FF_CODER_TYPE_VLC 0
1418#define FF_CODER_TYPE_AC 1
1419 /**
1420 * coder type
1421 * - encoding: set by user.
1422 * - decoding: unused
1423 */
1424 int coder_type;
1425
1426 /**
1427 * context model
1428 * - encoding: set by user.
1429 * - decoding: unused
1430 */
1431 int context_model;
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1432
1433 /**
1434 * slice flags
1435 * - encoding: unused
1436 * - decoding: set by user.
1437 */
1438 int slice_flags;
1439#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1440#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1441#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1442
fb364ada
IK
1443 /**
1444 * XVideo Motion Acceleration
1445 * - encoding: forbidden
1446 * - decoding: set by decoder
1447 */
1448 int xvmc_acceleration;
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1449
1450 /**
1451 * macroblock decision mode
1452 * - encoding: set by user.
1453 * - decoding: unused
1454 */
1455 int mb_decision;
1456#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1457#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1458#define FF_MB_DECISION_RD 2 ///< rate distoration
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1459
1460 /**
1461 * custom intra quantization matrix
1462 * - encoding: set by user, can be NULL
1463 * - decoding: set by lavc
1464 */
1465 uint16_t *intra_matrix;
1466
1467 /**
1468 * custom inter quantization matrix
1469 * - encoding: set by user, can be NULL
1470 * - decoding: set by lavc
1471 */
1472 uint16_t *inter_matrix;
7d1c3fc1 1473
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1474 /**
1475 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1476 * this is used to workaround some encoder bugs
1477 * - encoding: unused
1478 * - decoding: set by user, will be converted to upper case by lavc during init
1479 */
1480 unsigned int stream_codec_tag;
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1481
1482 /**
1483 * scene change detection threshold.
1484 * 0 is default, larger means fewer detected scene changes
1485 * - encoding: set by user.
1486 * - decoding: unused
1487 */
1488 int scenechange_threshold;
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1489
1490 /**
1491 * minimum lagrange multipler
1492 * - encoding: set by user.
1493 * - decoding: unused
1494 */
1495 int lmin;
1496
1497 /**
1498 * maximum lagrange multipler
1499 * - encoding: set by user.
1500 * - decoding: unused
1501 */
1502 int lmax;
2a2bbcb0
MM
1503
1504 /**
1505 * Palette control structure
1506 * - encoding: ??? (no palette-enabled encoder yet)
1507 * - decoding: set by user.
1508 */
1509 struct AVPaletteControl *palctrl;
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1510
1511 /**
1512 * noise reduction strength
1513 * - encoding: set by user.
1514 * - decoding: unused
1515 */
1516 int noise_reduction;
fa384dcc 1517
074c4ca7 1518 /**
e1c2a5a0
RT
1519 * called at the beginning of a frame to get cr buffer for it.
1520 * buffer type (size, hints) must be the same. lavc won't check it.
1521 * lavc will pass previous buffer in pic, function should return
1522 * same buffer or new buffer with old frame "painted" into it.
1523 * if pic.data[0] == NULL must behave like get_buffer().
074c4ca7 1524 * - encoding: unused
e1c2a5a0 1525 * - decoding: set by lavc, user can override
074c4ca7 1526 */
e1c2a5a0 1527 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
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1528
1529 /**
1530 * number of bits which should be loaded into the rc buffer before decoding starts
1531 * - encoding: set by user.
1532 * - decoding: unused
1533 */
1534 int rc_initial_buffer_occupancy;
1535
1536 /**
1537 *
1538 * - encoding: set by user.
1539 * - decoding: unused
1540 */
1541 int inter_threshold;
1542
1543 /**
1544 * CODEC_FLAG2_*.
1545 * - encoding: set by user.
1546 * - decoding: set by user.
1547 */
1548 int flags2;
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1549
1550 /**
1551 * simulates errors in the bitstream to test error concealment.
1552 * - encoding: set by user.
1553 * - decoding: unused.
1554 */
1555 int error_rate;
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MN
1556
1557 /**
1558 * MP3 antialias algorithm, see FF_AA_* below.
1559 * - encoding: unused
1560 * - decoding: set by user
1561 */
1562 int antialias_algo;
1563#define FF_AA_AUTO 0
1564#define FF_AA_FASTINT 1 //not implemented yet
1565#define FF_AA_INT 2
1566#define FF_AA_FLOAT 3
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MN
1567 /**
1568 * Quantizer noise shaping.
1569 * - encoding: set by user
1570 * - decoding: unused
1571 */
1572 int quantizer_noise_shaping;
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1573
1574 /**
1575 * Thread count.
1576 * is used to decide how many independant tasks should be passed to execute()
1577 * - encoding: set by user
1578 * - decoding: set by user
1579 */
1580 int thread_count;
1581
1582 /**
1583 * the codec may call this to execute several independant things. it will return only after
1584 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1585 * default implementation will execute the parts serially
399cec2f 1586 * @param count the number of things to execute
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1587 * - encoding: set by lavc, user can override
1588 * - decoding: set by lavc, user can override
1589 */
1590 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1591
1592 /**
1593 * Thread opaque.
1594 * can be used by execute() to store some per AVCodecContext stuff.
1595 * - encoding: set by execute()
1596 * - decoding: set by execute()
1597 */
1598 void *thread_opaque;
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1599
1600 /**
f20f8a8b
MN
1601 * Motion estimation threshold. under which no motion estimation is
1602 * performed, but instead the user specified motion vectors are used
a4d36c11
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1603 *
1604 * - encoding: set by user
f20f8a8b 1605 * - decoding: unused
a4d36c11 1606 */
2750b827 1607 int me_threshold;
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1608
1609 /**
1610 * Macroblock threshold. under which the user specified macroblock types will be used
1611 * - encoding: set by user
1612 * - decoding: unused
1613 */
1614 int mb_threshold;
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1615
1616 /**
d4c5d2ad 1617 * precision of the intra dc coefficient - 8.
bf266e19
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1618 * - encoding: set by user
1619 * - decoding: unused
1620 */
1621 int intra_dc_precision;
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MN
1622
1623 /**
1624 * noise vs. sse weight for the nsse comparsion function.
1625 * - encoding: set by user
1626 * - decoding: unused
1627 */
1628 int nsse_weight;
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1629
1630 /**
1631 * number of macroblock rows at the top which are skiped.
1632 * - encoding: unused
1633 * - decoding: set by user
1634 */
1635 int skip_top;
1636
1637 /**
1638 * number of macroblock rows at the bottom which are skiped.
1639 * - encoding: unused
1640 * - decoding: set by user
1641 */
1642 int skip_bottom;
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MN
1643
1644 /**
1645 * profile
1646 * - encoding: set by user
1647 * - decoding: set by lavc
1648 */
1649 int profile;
1650#define FF_PROFILE_UNKNOWN -99
1651
1652 /**
1653 * level
1654 * - encoding: set by user
1655 * - decoding: set by lavc
1656 */
1657 int level;
1658#define FF_LEVEL_UNKNOWN -99
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MN
1659
1660 /**
1661 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1662 * - encoding: unused
1663 * - decoding: set by user
1664 */
1665 int lowres;
de6d9b64
FB
1666} AVCodecContext;
1667
97d96aaa 1668
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1669/**
1670 * AVOption.
1671 */
97d96aaa
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1672typedef struct AVOption {
1673 /** options' name */
1674 const char *name; /* if name is NULL, it indicates a link to next */
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1675 /** short English text help or const struct AVOption* subpointer */
1676 const char *help; // const struct AVOption* sub;
97d96aaa
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1677 /** offset to context structure where the parsed value should be stored */
1678 int offset;
1679 /** options' type */
1680 int type;
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1681#define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1682#define FF_OPT_TYPE_DOUBLE 2 ///< double
1683#define FF_OPT_TYPE_INT 3 ///< integer
1684#define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1685#define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
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ZK
1686//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1687#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1688#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1689 /** min value (min == max -> no limits) */
1690 double min;
1691 /** maximum value for double/int */
1692 double max;
1693 /** default boo [0,1]l/double/int value */
1694 double defval;
1695 /**
1696 * default string value (with optional semicolon delimited extra option-list
1697 * i.e. option1;option2;option3
1698 * defval might select other then first argument as default
1699 */
1700 const char *defstr;
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1701#define FF_OPT_MAX_DEPTH 10
1702} AVOption;
1703
64863965 1704/**
bec89a84
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1705 * Parse option(s) and sets fields in passed structure
1706 * @param strct structure where the parsed results will be written
1707 * @param list list with AVOptions
1708 * @param opts string with options for parsing
1709 */
1710int avoption_parse(void* strct, const AVOption* list, const char* opts);
1711
1712
1713/**
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1714 * AVCodec.
1715 */
de6d9b64 1716typedef struct AVCodec {
18f77016 1717 const char *name;
5d234974 1718 enum CodecType type;
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FB
1719 int id;
1720 int priv_data_size;
1721 int (*init)(AVCodecContext *);
0c1a9eda 1722 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
de6d9b64 1723 int (*close)(AVCodecContext *);
0fd90455 1724 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
0c1a9eda 1725 uint8_t *buf, int buf_size);
bf89e6b1 1726 int capabilities;
97d96aaa 1727 const AVOption *options;
de6d9b64 1728 struct AVCodec *next;
7a06ff14 1729 void (*flush)(AVCodecContext *);
b0df362b 1730 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
fcee0164 1731 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
de6d9b64
FB
1732} AVCodec;
1733
97d96aaa 1734/**
d7425f59
MN
1735 * four components are given, that's all.
1736 * the last component is alpha
1737 */
de6d9b64 1738typedef struct AVPicture {
0c1a9eda 1739 uint8_t *data[4];
cd394651 1740 int linesize[4]; ///< number of bytes per line
de6d9b64
FB
1741} AVPicture;
1742
ba118447
MM
1743/**
1744 * AVPaletteControl
1745 * This structure defines a method for communicating palette changes
1746 * between and demuxer and a decoder.
1747 */
2e99641b 1748#define AVPALETTE_SIZE 1024
432d84c3 1749#define AVPALETTE_COUNT 256
ba118447
MM
1750typedef struct AVPaletteControl {
1751
1752 /* demuxer sets this to 1 to indicate the palette has changed;
1753 * decoder resets to 0 */
1754 int palette_changed;
1755
2a2bbcb0
MM
1756 /* 4-byte ARGB palette entries, stored in native byte order; note that
1757 * the individual palette components should be on a 8-bit scale; if
1758 * the palette data comes from a IBM VGA native format, the component
1759 * data is probably 6 bits in size and needs to be scaled */
2e99641b 1760 unsigned int palette[AVPALETTE_COUNT];
ba118447
MM
1761
1762} AVPaletteControl;
1763
de6d9b64
FB
1764extern AVCodec ac3_encoder;
1765extern AVCodec mp2_encoder;
9d36bdc9 1766extern AVCodec mp3lame_encoder;
81e0d0b4 1767extern AVCodec oggvorbis_encoder;
29d48296 1768extern AVCodec faac_encoder;
1ddadfa9 1769extern AVCodec xvid_encoder;
de6d9b64 1770extern AVCodec mpeg1video_encoder;
029911d1 1771extern AVCodec mpeg2video_encoder;
de6d9b64
FB
1772extern AVCodec h263_encoder;
1773extern AVCodec h263p_encoder;
d4f5d74a 1774extern AVCodec flv_encoder;
de6d9b64 1775extern AVCodec rv10_encoder;
68b94c35 1776extern AVCodec rv20_encoder;
6faa4645 1777extern AVCodec dvvideo_encoder;
de6d9b64 1778extern AVCodec mjpeg_encoder;
b1e6b355 1779extern AVCodec ljpeg_encoder;
bf89e6b1 1780extern AVCodec mpeg4_encoder;
84afee34
MN
1781extern AVCodec msmpeg4v1_encoder;
1782extern AVCodec msmpeg4v2_encoder;
1783extern AVCodec msmpeg4v3_encoder;
0151a6f5
MN
1784extern AVCodec wmv1_encoder;
1785extern AVCodec wmv2_encoder;
11f18faf 1786extern AVCodec huffyuv_encoder;
0da71265 1787extern AVCodec h264_encoder;
3d2e8cce 1788extern AVCodec asv1_encoder;
9b56edf5 1789extern AVCodec asv2_encoder;
be3564ed 1790extern AVCodec vcr1_encoder;
5e20f836 1791extern AVCodec ffv1_encoder;
791e7b83 1792extern AVCodec snow_encoder;
c3bf0288 1793extern AVCodec mdec_encoder;
a273bbfb 1794extern AVCodec zlib_encoder;
54f5fd22
AB
1795extern AVCodec sonic_encoder;
1796extern AVCodec sonic_ls_encoder;
3b64893d 1797extern AVCodec svq1_encoder;
de6d9b64
FB
1798
1799extern AVCodec h263_decoder;
c6148de2 1800extern AVCodec h261_decoder;
bf89e6b1 1801extern AVCodec mpeg4_decoder;
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MN
1802extern AVCodec msmpeg4v1_decoder;
1803extern AVCodec msmpeg4v2_decoder;
1804extern AVCodec msmpeg4v3_decoder;
e1a9dbff 1805extern AVCodec wmv1_decoder;
0151a6f5 1806extern AVCodec wmv2_decoder;
922bc38d
MN
1807extern AVCodec mpeg1video_decoder;
1808extern AVCodec mpeg2video_decoder;
c512b303 1809extern AVCodec mpegvideo_decoder;
fb364ada 1810extern AVCodec mpeg_xvmc_decoder;
de6d9b64 1811extern AVCodec h263i_decoder;
d4f5d74a 1812extern AVCodec flv_decoder;
de6d9b64 1813extern AVCodec rv10_decoder;
68b94c35 1814extern AVCodec rv20_decoder;
be8ffec9 1815extern AVCodec svq1_decoder;
8b82a956 1816extern AVCodec svq3_decoder;
020fcc94 1817extern AVCodec dvvideo_decoder;
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FB
1818extern AVCodec wmav1_decoder;
1819extern AVCodec wmav2_decoder;
4e66ab3b 1820extern AVCodec mjpeg_decoder;
b135d9fb 1821extern AVCodec mjpegb_decoder;
5e83dec4 1822extern AVCodec sp5x_decoder;
4b1f4f23 1823extern AVCodec mp2_decoder;
a96b68b7 1824extern AVCodec mp3_decoder;
3f95e843
FR
1825extern AVCodec mace3_decoder;
1826extern AVCodec mace6_decoder;
11f18faf 1827extern AVCodec huffyuv_decoder;
3aca208a 1828extern AVCodec oggvorbis_decoder;
f70f7c6d 1829extern AVCodec cyuv_decoder;
0da71265 1830extern AVCodec h264_decoder;
deabd4fd 1831extern AVCodec indeo3_decoder;
d86053a4 1832extern AVCodec vp3_decoder;
f44ee2c3 1833extern AVCodec theora_decoder;
891f64b3 1834extern AVCodec amr_nb_decoder;
bc634f6f 1835extern AVCodec amr_nb_encoder;
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MN
1836extern AVCodec amr_wb_encoder;
1837extern AVCodec amr_wb_decoder;
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1838extern AVCodec aac_decoder;
1839extern AVCodec mpeg4aac_decoder;
3d2e8cce 1840extern AVCodec asv1_decoder;
9b56edf5 1841extern AVCodec asv2_decoder;
be3564ed 1842extern AVCodec vcr1_decoder;
3aff069b 1843extern AVCodec cljr_decoder;
5e20f836 1844extern AVCodec ffv1_decoder;
791e7b83 1845extern AVCodec snow_decoder;
8809cfee 1846extern AVCodec fourxm_decoder;
c3bf0288 1847extern AVCodec mdec_decoder;
3ef8be2b
MM
1848extern AVCodec roq_decoder;
1849extern AVCodec interplay_video_decoder;
9937e686 1850extern AVCodec xan_wc3_decoder;
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MM
1851extern AVCodec rpza_decoder;
1852extern AVCodec cinepak_decoder;
1853extern AVCodec msrle_decoder;
1854extern AVCodec msvideo1_decoder;
6955a882 1855extern AVCodec vqa_decoder;
4120a53a 1856extern AVCodec idcin_decoder;
1dc1ed99 1857extern AVCodec eightbps_decoder;
11e29a41 1858extern AVCodec smc_decoder;
42cad81a 1859extern AVCodec flic_decoder;
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MM
1860extern AVCodec vmdvideo_decoder;
1861extern AVCodec vmdaudio_decoder;
9a4117d5 1862extern AVCodec truemotion1_decoder;
a273bbfb
RT
1863extern AVCodec mszh_decoder;
1864extern AVCodec zlib_decoder;
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NK
1865extern AVCodec ra_144_decoder;
1866extern AVCodec ra_288_decoder;
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MM
1867extern AVCodec roq_dpcm_decoder;
1868extern AVCodec interplay_dpcm_decoder;
9937e686 1869extern AVCodec xan_dpcm_decoder;
54f5fd22 1870extern AVCodec sonic_decoder;
070ed1bc 1871extern AVCodec qtrle_decoder;
ac2570a8 1872extern AVCodec flac_decoder;
9d53d58e 1873extern AVCodec tscc_decoder;
d0a0bbd2 1874extern AVCodec ulti_decoder;
de6d9b64 1875
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1876/* pcm codecs */
1877#define PCM_CODEC(id, name) \
1878extern AVCodec name ## _decoder; \
f11d3f23 1879extern AVCodec name ## _encoder
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FB
1880
1881PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1882PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1883PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1884PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1885PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1886PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1887PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1888PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1889
0147f198
FR
1890/* adpcm codecs */
1891
1892PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1893PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
9937e686
MM
1894PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1895PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2fdf638b 1896PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
7d8379f2 1897PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
0147f198 1898PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
4b465299 1899PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
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MM
1900PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1901PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
7d8379f2 1902PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
e5966052 1903PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
0147f198 1904
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FB
1905#undef PCM_CODEC
1906
1907/* dummy raw video codec */
63167088
RS
1908extern AVCodec rawvideo_encoder;
1909extern AVCodec rawvideo_decoder;
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FB
1910
1911/* the following codecs use external GPL libs */
de6d9b64 1912extern AVCodec ac3_decoder;
23c99253 1913extern AVCodec dts_decoder;
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FB
1914
1915/* resample.c */
1916
1917struct ReSampleContext;
aaaf1635 1918struct AVResampleContext;
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FB
1919
1920typedef struct ReSampleContext ReSampleContext;
1921
1922ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1923 int output_rate, int input_rate);
1924int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1925void audio_resample_close(ReSampleContext *s);
1926
aaaf1635
MN
1927struct AVResampleContext *av_resample_init(int out_rate, int in_rate);
1928int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2d48eddd 1929void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
d88443ae 1930void av_resample_close(struct AVResampleContext *c);
aaaf1635 1931
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1932/* YUV420 format is assumed ! */
1933
1934struct ImgReSampleContext;
1935
1936typedef struct ImgReSampleContext ImgReSampleContext;
1937
1938ImgReSampleContext *img_resample_init(int output_width, int output_height,
1939 int input_width, int input_height);
ab6d194a
MN
1940
1941ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1942 int iwidth, int iheight,
1943 int topBand, int bottomBand,
1ff93ffc
TK
1944 int leftBand, int rightBand,
1945 int padtop, int padbottom,
1946 int padleft, int padright);
1947
ab6d194a 1948
de6d9b64 1949void img_resample(ImgReSampleContext *s,
da64ecc3 1950 AVPicture *output, const AVPicture *input);
de6d9b64
FB
1951
1952void img_resample_close(ImgReSampleContext *s);
1953
75917b88
DH
1954/**
1955 * Allocate memory for a picture. Call avpicture_free to free it.
1956 *
1957 * @param picture the picture to be filled in.
1958 * @param pix_fmt the format of the picture.
1959 * @param width the width of the picture.
1960 * @param height the height of the picture.
1961 * @return 0 if successful, -1 if not.
1962 */
1963int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1964
1965/* Free a picture previously allocated by avpicture_alloc. */
1966void avpicture_free(AVPicture *picture);
1967
0c1a9eda 1968int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2d1a4094 1969 int pix_fmt, int width, int height);
da64ecc3 1970int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
63167088 1971 unsigned char *dest, int dest_size);
219b06c6 1972int avpicture_get_size(int pix_fmt, int width, int height);
dab64ebc
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1973void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1974const char *avcodec_get_pix_fmt_name(int pix_fmt);
63167088 1975enum PixelFormat avcodec_get_pix_fmt(const char* name);
219b06c6 1976
fab21997
FB
1977#define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1978#define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1979#define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1980#define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1981#define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1982#define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1983
1984int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1985 int has_alpha);
1986int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1987 int has_alpha, int *loss_ptr);
1988
0469baf1
FB
1989#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1990#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
da64ecc3
DH
1991int img_get_alpha_info(const AVPicture *src,
1992 int pix_fmt, int width, int height);
0469baf1 1993
219b06c6
FB
1994/* convert among pixel formats */
1995int img_convert(AVPicture *dst, int dst_pix_fmt,
da64ecc3 1996 const AVPicture *src, int pix_fmt,
219b06c6
FB
1997 int width, int height);
1998
1999/* deinterlace a picture */
da64ecc3 2000int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
de6d9b64
FB
2001 int pix_fmt, int width, int height);
2002
2003/* external high level API */
2004
2005extern AVCodec *first_avcodec;
2006
156e5023 2007/* returns LIBAVCODEC_VERSION_INT constant */
51a49663 2008unsigned avcodec_version(void);
8bceb6af 2009/* returns LIBAVCODEC_BUILD constant */
51a49663 2010unsigned avcodec_build(void);
de6d9b64
FB
2011void avcodec_init(void);
2012
2013void register_avcodec(AVCodec *format);
2014AVCodec *avcodec_find_encoder(enum CodecID id);
98f3b098 2015AVCodec *avcodec_find_encoder_by_name(const char *name);
de6d9b64
FB
2016AVCodec *avcodec_find_decoder(enum CodecID id);
2017AVCodec *avcodec_find_decoder_by_name(const char *name);
2018void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2019
1e491e29 2020void avcodec_get_context_defaults(AVCodecContext *s);
7ffbb60e 2021AVCodecContext *avcodec_alloc_context(void);
7906085f 2022void avcodec_get_frame_defaults(AVFrame *pic);
492cd3a9 2023AVFrame *avcodec_alloc_frame(void);
1e491e29 2024
492cd3a9
MN
2025int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2026void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
3a569751
MN
2027int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2028void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2029enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
1e491e29 2030
5a815088
MN
2031int avcodec_thread_init(AVCodecContext *s, int thread_count);
2032void avcodec_thread_free(AVCodecContext *s);
2033int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
3a569751 2034int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
9c3d33d6
MN
2035//FIXME func typedef
2036
7a06ff14
MN
2037/**
2038 * opens / inits the AVCodecContext.
2039 * not thread save!
2040 */
de6d9b64 2041int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
7a06ff14 2042
0c1a9eda 2043int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 2044 int *frame_size_ptr,
0c1a9eda 2045 uint8_t *buf, int buf_size);
492cd3a9 2046int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 2047 int *got_picture_ptr,
0c1a9eda
ZK
2048 uint8_t *buf, int buf_size);
2049int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
917e06c8 2050 int *data_size_ptr,
0c1a9eda
ZK
2051 uint8_t *buf, int buf_size);
2052int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64 2053 const short *samples);
0c1a9eda 2054int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 2055 const AVFrame *pict);
de6d9b64
FB
2056
2057int avcodec_close(AVCodecContext *avctx);
2058
2059void avcodec_register_all(void);
a96b68b7 2060
1c2a8c7f
MN
2061void avcodec_flush_buffers(AVCodecContext *avctx);
2062
14bea432 2063/* misc usefull functions */
d8085ea7
MN
2064
2065/**
2066 * returns a single letter to describe the picture type
2067 */
2068char av_get_pict_type_char(int pict_type);
2069
14bea432
MN
2070/**
2071 * reduce a fraction.
2072 * this is usefull for framerate calculations
2073 * @param max the maximum allowed for dst_nom & dst_den
2074 * @return 1 if exact, 0 otherwise
2075 */
2076int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2077
2078/**
1f018225 2079 * rescale a 64bit integer with rounding to nearest.
14bea432
MN
2080 * a simple a*b/c isnt possible as it can overflow
2081 */
4c263142 2082int64_t av_rescale(int64_t a, int64_t b, int64_t c);
628d601b 2083
1f018225
MN
2084/**
2085 * rescale a 64bit integer with specified rounding.
2086 * a simple a*b/c isnt possible as it can overflow
2087 */
2088int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
628d601b 2089
e8f14793
ZK
2090/**
2091 * Interface for 0.5.0 version
2092 *
2093 * do not even think about it's usage for this moment
2094 */
2095
2096typedef struct {
64863965 2097 /// compressed size used from given memory buffer
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ZK
2098 int size;
2099 /// I/P/B frame type
2100 int frame_type;
2101} avc_enc_result_t;
2102
2103/**
2104 * Commands
2105 * order can't be changed - once it was defined
2106 */
2107typedef enum {
2108 // general commands
2109 AVC_OPEN_BY_NAME = 0xACA000,
2110 AVC_OPEN_BY_CODEC_ID,
2111 AVC_OPEN_BY_FOURCC,
2112 AVC_CLOSE,
2113
2114 AVC_FLUSH,
2115 // pin - struct { uint8_t* src, uint_t src_size }
2116 // pout - struct { AVPicture* img, consumed_bytes,
2117 AVC_DECODE,
2118 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
2119 // pout - uint_t used_from_dest_size
2120 AVC_ENCODE,
2121
2122 // query/get video commands
2123 AVC_GET_VERSION = 0xACB000,
2124 AVC_GET_WIDTH,
2125 AVC_GET_HEIGHT,
2126 AVC_GET_DELAY,
2127 AVC_GET_QUANT_TABLE,
2128 // ...
2129
2130 // query/get audio commands
2131 AVC_GET_FRAME_SIZE = 0xABC000,
2132
2133 // maybe define some simple structure which
2134 // might be passed to the user - but they can't
2135 // contain any codec specific parts and these
2136 // calls are usualy necessary only few times
2137
2138 // set video commands
2139 AVC_SET_WIDTH = 0xACD000,
2140 AVC_SET_HEIGHT,
2141
2142 // set video encoding commands
2143 AVC_SET_FRAME_RATE = 0xACD800,
2144 AVC_SET_QUALITY,
2145 AVC_SET_HURRY_UP,
2146
2147 // set audio commands
2148 AVC_SET_SAMPLE_RATE = 0xACE000,
2149 AVC_SET_CHANNELS,
2150
2151} avc_cmd_t;
2152
2153/**
2154 * \param handle allocated private structure by libavcodec
2155 * for initialization pass NULL - will be returned pout
2156 * user is supposed to know nothing about its structure
2157 * \param cmd type of operation to be performed
2158 * \param pint input parameter
2159 * \param pout output parameter
2160 *
2161 * \returns command status - eventually for query command it might return
2162 * integer resulting value
2163 */
2164int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2165
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FB
2166/* frame parsing */
2167typedef struct AVCodecParserContext {
2168 void *priv_data;
2169 struct AVCodecParser *parser;
2170 int64_t frame_offset; /* offset of the current frame */
2171 int64_t cur_offset; /* current offset
2172 (incremented by each av_parser_parse()) */
2173 int64_t last_frame_offset; /* offset of the last frame */
2174 /* video info */
2175 int pict_type; /* XXX: put it back in AVCodecContext */
2176 int repeat_pict; /* XXX: put it back in AVCodecContext */
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FB
2177 int64_t pts; /* pts of the current frame */
2178 int64_t dts; /* dts of the current frame */
2179
2180 /* private data */
2181 int64_t last_pts;
2182 int64_t last_dts;
a62aecce 2183 int fetch_timestamp;
b84f2a35
FB
2184
2185#define AV_PARSER_PTS_NB 4
2186 int cur_frame_start_index;
2187 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2188 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2189 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
8424cf50
FB
2190} AVCodecParserContext;
2191
2192typedef struct AVCodecParser {
2193 int codec_ids[3]; /* several codec IDs are permitted */
2194 int priv_data_size;
2195 int (*parser_init)(AVCodecParserContext *s);
2196 int (*parser_parse)(AVCodecParserContext *s,
2197 AVCodecContext *avctx,
2198 uint8_t **poutbuf, int *poutbuf_size,
2199 const uint8_t *buf, int buf_size);
2200 void (*parser_close)(AVCodecParserContext *s);
2201 struct AVCodecParser *next;
2202} AVCodecParser;
2203
2204extern AVCodecParser *av_first_parser;
2205
2206void av_register_codec_parser(AVCodecParser *parser);
2207AVCodecParserContext *av_parser_init(int codec_id);
2208int av_parser_parse(AVCodecParserContext *s,
2209 AVCodecContext *avctx,
2210 uint8_t **poutbuf, int *poutbuf_size,
b84f2a35
FB
2211 const uint8_t *buf, int buf_size,
2212 int64_t pts, int64_t dts);
8424cf50
FB
2213void av_parser_close(AVCodecParserContext *s);
2214
2215extern AVCodecParser mpegvideo_parser;
2216extern AVCodecParser mpeg4video_parser;
c6148de2 2217extern AVCodecParser h261_parser;
8424cf50
FB
2218extern AVCodecParser h263_parser;
2219extern AVCodecParser h264_parser;
2220extern AVCodecParser mpegaudio_parser;
2221extern AVCodecParser ac3_parser;
2222
544eb99c 2223/* memory */
e4eadb4b 2224void *av_malloc(unsigned int size);
18f77016 2225void *av_mallocz(unsigned int size);
8e1e6f31 2226void *av_realloc(void *ptr, unsigned int size);
544eb99c 2227void av_free(void *ptr);
8e1e6f31 2228char *av_strdup(const char *s);
81c5f887 2229void av_freep(void *ptr);
97d96aaa 2230void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
855ea723
ZK
2231/* for static data only */
2232/* call av_free_static to release all staticaly allocated tables */
628d601b 2233void av_free_static(void);
8d1f2ba5 2234void *av_mallocz_static(unsigned int size);
544eb99c 2235
fc384777
MM
2236/* add by bero : in adx.c */
2237int is_adx(const unsigned char *buf,size_t bufsize);
2238
e1c2a5a0
RT
2239void img_copy(AVPicture *dst, const AVPicture *src,
2240 int pix_fmt, int width, int height);
2241
9b879566
MB
2242/* av_log API */
2243
2244#include <stdarg.h>
2245
d8019eb5 2246#define AV_LOG_QUIET -1
9b879566
MB
2247#define AV_LOG_ERROR 0
2248#define AV_LOG_INFO 1
2249#define AV_LOG_DEBUG 2
2250
f4bd8cf0 2251#ifdef __GNUC__
bc874dae 2252extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
f4bd8cf0
MN
2253#else
2254extern void av_log(void*, int level, const char *fmt, ...);
2255#endif
2256
bc874dae 2257extern void av_vlog(void*, int level, const char *fmt, va_list);
9b879566
MB
2258extern int av_log_get_level(void);
2259extern void av_log_set_level(int);
bc874dae 2260extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
9b879566 2261
3a278992 2262/* endian macros */
e96682e6 2263#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
3a278992
MM
2264#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2265#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2266 (((uint8_t*)(x))[1] << 16) | \
2267 (((uint8_t*)(x))[2] << 8) | \
2268 ((uint8_t*)(x))[3])
2269#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2270#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2271 (((uint8_t*)(x))[2] << 16) | \
2272 (((uint8_t*)(x))[1] << 8) | \
2273 ((uint8_t*)(x))[0])
e96682e6 2274#endif
3a278992 2275
02d697aa
ZK
2276#ifdef __cplusplus
2277}
2278#endif
2279
a96b68b7 2280#endif /* AVCODEC_H */