libavcodec/avcodec.h

   1 #ifndef AVCODEC_H
   2 #define AVCODEC_H
   3
   4 /**
   5  * @file avcodec.h
   6  * external api header.
   7  */
   8
   9
  10 #ifdef __cplusplus
  11 extern "C" {
  12 #endif
  13
  14 #include "avutil.h"
  15 #include <sys/types.h> /* size_t */
  16
  17 //FIXME: This really doesn't belong in here..
  18 #define FFMPEG_VERSION_INT      0x000409
  19
  20 #define AV_STRINGIFY(s)         AV_TOSTRING(s)
  21 #define AV_TOSTRING(s) #s
  22
  23 #define LIBAVCODEC_VERSION_INT  ((51<<16)+(9<<8)+0)
  24 #define LIBAVCODEC_VERSION      51.9.0
  25 #define LIBAVCODEC_BUILD        LIBAVCODEC_VERSION_INT
  26
  27 #define LIBAVCODEC_IDENT        "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
  28
  29 #define AV_NOPTS_VALUE          int64_t_C(0x8000000000000000)
  30 #define AV_TIME_BASE            1000000
  31 #define AV_TIME_BASE_Q          (AVRational){1, AV_TIME_BASE}
  32
  33 enum CodecID {
  34     CODEC_ID_NONE,
  35     CODEC_ID_MPEG1VIDEO,
  36     CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
  37     CODEC_ID_MPEG2VIDEO_XVMC,
  38     CODEC_ID_H261,
  39     CODEC_ID_H263,
  40     CODEC_ID_RV10,
  41     CODEC_ID_RV20,
  42     CODEC_ID_MJPEG,
  43     CODEC_ID_MJPEGB,
  44     CODEC_ID_LJPEG,
  45     CODEC_ID_SP5X,
  46     CODEC_ID_JPEGLS,
  47     CODEC_ID_MPEG4,
  48     CODEC_ID_RAWVIDEO,
  49     CODEC_ID_MSMPEG4V1,
  50     CODEC_ID_MSMPEG4V2,
  51     CODEC_ID_MSMPEG4V3,
  52     CODEC_ID_WMV1,
  53     CODEC_ID_WMV2,
  54     CODEC_ID_H263P,
  55     CODEC_ID_H263I,
  56     CODEC_ID_FLV1,
  57     CODEC_ID_SVQ1,
  58     CODEC_ID_SVQ3,
  59     CODEC_ID_DVVIDEO,
  60     CODEC_ID_HUFFYUV,
  61     CODEC_ID_CYUV,
  62     CODEC_ID_H264,
  63     CODEC_ID_INDEO3,
  64     CODEC_ID_VP3,
  65     CODEC_ID_THEORA,
  66     CODEC_ID_ASV1,
  67     CODEC_ID_ASV2,
  68     CODEC_ID_FFV1,
  69     CODEC_ID_4XM,
  70     CODEC_ID_VCR1,
  71     CODEC_ID_CLJR,
  72     CODEC_ID_MDEC,
  73     CODEC_ID_ROQ,
  74     CODEC_ID_INTERPLAY_VIDEO,
  75     CODEC_ID_XAN_WC3,
  76     CODEC_ID_XAN_WC4,
  77     CODEC_ID_RPZA,
  78     CODEC_ID_CINEPAK,
  79     CODEC_ID_WS_VQA,
  80     CODEC_ID_MSRLE,
  81     CODEC_ID_MSVIDEO1,
  82     CODEC_ID_IDCIN,
  83     CODEC_ID_8BPS,
  84     CODEC_ID_SMC,
  85     CODEC_ID_FLIC,
  86     CODEC_ID_TRUEMOTION1,
  87     CODEC_ID_VMDVIDEO,
  88     CODEC_ID_MSZH,
  89     CODEC_ID_ZLIB,
  90     CODEC_ID_QTRLE,
  91     CODEC_ID_SNOW,
  92     CODEC_ID_TSCC,
  93     CODEC_ID_ULTI,
  94     CODEC_ID_QDRAW,
  95     CODEC_ID_VIXL,
  96     CODEC_ID_QPEG,
  97     CODEC_ID_XVID,
  98     CODEC_ID_PNG,
  99     CODEC_ID_PPM,
 100     CODEC_ID_PBM,
 101     CODEC_ID_PGM,
 102     CODEC_ID_PGMYUV,
 103     CODEC_ID_PAM,
 104     CODEC_ID_FFVHUFF,
 105     CODEC_ID_RV30,
 106     CODEC_ID_RV40,
 107     CODEC_ID_VC9,
 108     CODEC_ID_WMV3,
 109     CODEC_ID_LOCO,
 110     CODEC_ID_WNV1,
 111     CODEC_ID_AASC,
 112     CODEC_ID_INDEO2,
 113     CODEC_ID_FRAPS,
 114     CODEC_ID_TRUEMOTION2,
 115     CODEC_ID_BMP,
 116     CODEC_ID_CSCD,
 117     CODEC_ID_MMVIDEO,
 118     CODEC_ID_ZMBV,
 119     CODEC_ID_AVS,
 120     CODEC_ID_SMACKVIDEO,
 121     CODEC_ID_NUV,
 122     CODEC_ID_KMVC,
 123     CODEC_ID_FLASHSV,
 124
 125     /* various pcm "codecs" */
 126     CODEC_ID_PCM_S16LE= 0x10000,
 127     CODEC_ID_PCM_S16BE,
 128     CODEC_ID_PCM_U16LE,
 129     CODEC_ID_PCM_U16BE,
 130     CODEC_ID_PCM_S8,
 131     CODEC_ID_PCM_U8,
 132     CODEC_ID_PCM_MULAW,
 133     CODEC_ID_PCM_ALAW,
 134     CODEC_ID_PCM_S32LE,
 135     CODEC_ID_PCM_S32BE,
 136     CODEC_ID_PCM_U32LE,
 137     CODEC_ID_PCM_U32BE,
 138     CODEC_ID_PCM_S24LE,
 139     CODEC_ID_PCM_S24BE,
 140     CODEC_ID_PCM_U24LE,
 141     CODEC_ID_PCM_U24BE,
 142     CODEC_ID_PCM_S24DAUD,
 143
 144     /* various adpcm codecs */
 145     CODEC_ID_ADPCM_IMA_QT= 0x11000,
 146     CODEC_ID_ADPCM_IMA_WAV,
 147     CODEC_ID_ADPCM_IMA_DK3,
 148     CODEC_ID_ADPCM_IMA_DK4,
 149     CODEC_ID_ADPCM_IMA_WS,
 150     CODEC_ID_ADPCM_IMA_SMJPEG,
 151     CODEC_ID_ADPCM_MS,
 152     CODEC_ID_ADPCM_4XM,
 153     CODEC_ID_ADPCM_XA,
 154     CODEC_ID_ADPCM_ADX,
 155     CODEC_ID_ADPCM_EA,
 156     CODEC_ID_ADPCM_G726,
 157     CODEC_ID_ADPCM_CT,
 158     CODEC_ID_ADPCM_SWF,
 159     CODEC_ID_ADPCM_YAMAHA,
 160     CODEC_ID_ADPCM_SBPRO_4,
 161     CODEC_ID_ADPCM_SBPRO_3,
 162     CODEC_ID_ADPCM_SBPRO_2,
 163
 164     /* AMR */
 165     CODEC_ID_AMR_NB= 0x12000,
 166     CODEC_ID_AMR_WB,
 167
 168     /* RealAudio codecs*/
 169     CODEC_ID_RA_144= 0x13000,
 170     CODEC_ID_RA_288,
 171
 172     /* various DPCM codecs */
 173     CODEC_ID_ROQ_DPCM= 0x14000,
 174     CODEC_ID_INTERPLAY_DPCM,
 175     CODEC_ID_XAN_DPCM,
 176     CODEC_ID_SOL_DPCM,
 177
 178     CODEC_ID_MP2= 0x15000,
 179     CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
 180     CODEC_ID_AAC,
 181     CODEC_ID_MPEG4AAC,
 182     CODEC_ID_AC3,
 183     CODEC_ID_DTS,
 184     CODEC_ID_VORBIS,
 185     CODEC_ID_DVAUDIO,
 186     CODEC_ID_WMAV1,
 187     CODEC_ID_WMAV2,
 188     CODEC_ID_MACE3,
 189     CODEC_ID_MACE6,
 190     CODEC_ID_VMDAUDIO,
 191     CODEC_ID_SONIC,
 192     CODEC_ID_SONIC_LS,
 193     CODEC_ID_FLAC,
 194     CODEC_ID_MP3ADU,
 195     CODEC_ID_MP3ON4,
 196     CODEC_ID_SHORTEN,
 197     CODEC_ID_ALAC,
 198     CODEC_ID_WESTWOOD_SND1,
 199     CODEC_ID_GSM,
 200     CODEC_ID_QDM2,
 201     CODEC_ID_COOK,
 202     CODEC_ID_TRUESPEECH,
 203     CODEC_ID_TTA,
 204     CODEC_ID_SMACKAUDIO,
 205
 206     CODEC_ID_OGGTHEORA= 0x16000,
 207
 208     /* subtitle codecs */
 209     CODEC_ID_DVD_SUBTITLE= 0x17000,
 210     CODEC_ID_DVB_SUBTITLE,
 211
 212     CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
 213                          stream (only used by libavformat) */
 214 };
 215
 216 /* CODEC_ID_MP3LAME is absolete */
 217 #define CODEC_ID_MP3LAME CODEC_ID_MP3
 218
 219 enum CodecType {
 220     CODEC_TYPE_UNKNOWN = -1,
 221     CODEC_TYPE_VIDEO,
 222     CODEC_TYPE_AUDIO,
 223     CODEC_TYPE_DATA,
 224     CODEC_TYPE_SUBTITLE,
 225 };
 226
 227 /* currently unused, may be used if 24/32 bits samples ever supported */
 228 /* all in native endian */
 229 enum SampleFormat {
 230     SAMPLE_FMT_NONE = -1,
 231     SAMPLE_FMT_U8,              ///< unsigned 8 bits
 232     SAMPLE_FMT_S16,             ///< signed 16 bits
 233     SAMPLE_FMT_S24,             ///< signed 24 bits
 234     SAMPLE_FMT_S32,             ///< signed 32 bits
 235     SAMPLE_FMT_FLT,             ///< float
 236 };
 237
 238 /* in bytes */
 239 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
 240
 241 /**
 242  * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
 243  * this is mainly needed because some optimized bitstream readers read
 244  * 32 or 64 bit at once and could read over the end<br>
 245  * Note, if the first 23 bits of the additional bytes are not 0 then damaged
 246  * MPEG bitstreams could cause overread and segfault
 247  */
 248 #define FF_INPUT_BUFFER_PADDING_SIZE 8
 249
 250 /**
 251  * minimum encoding buffer size.
 252  * used to avoid some checks during header writing
 253  */
 254 #define FF_MIN_BUFFER_SIZE 16384
 255
 256 /* motion estimation type, EPZS by default */
 257 enum Motion_Est_ID {
 258     ME_ZERO = 1,
 259     ME_FULL,
 260     ME_LOG,
 261     ME_PHODS,
 262     ME_EPZS,
 263     ME_X1,
 264     ME_HEX,
 265     ME_UMH,
 266     ME_ITER,
 267 };
 268
 269 enum AVDiscard{
 270 //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
 271     AVDISCARD_NONE   =-16, ///< discard nothing
 272     AVDISCARD_DEFAULT=  0, ///< discard useless packets like 0 size packets in avi
 273     AVDISCARD_NONREF =  8, ///< discard all non reference
 274     AVDISCARD_BIDIR  = 16, ///< discard all bidirectional frames
 275     AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
 276     AVDISCARD_ALL    = 48, ///< discard all
 277 };
 278
 279 typedef struct RcOverride{
 280     int start_frame;
 281     int end_frame;
 282     int qscale; // if this is 0 then quality_factor will be used instead
 283     float quality_factor;
 284 } RcOverride;
 285
 286 /* only for ME compatiblity with old apps */
 287 extern int motion_estimation_method;
 288
 289 #define FF_MAX_B_FRAMES 16
 290
 291 /* encoding support
 292    these flags can be passed in AVCodecContext.flags before initing
 293    Note: not everything is supported yet.
 294 */
 295
 296 #define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale
 297 #define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / Advanced prediction for H263
 298 #define CODEC_FLAG_QPEL   0x0010  ///< use qpel MC
 299 #define CODEC_FLAG_GMC    0x0020  ///< use GMC
 300 #define CODEC_FLAG_MV0    0x0040  ///< always try a MB with MV=<0,0>
 301 #define CODEC_FLAG_PART   0x0080  ///< use data partitioning
 302 /* parent program gurantees that the input for b-frame containing streams is not written to
 303    for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
 304 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
 305 #define CODEC_FLAG_PASS1 0x0200   ///< use internal 2pass ratecontrol in first  pass mode
 306 #define CODEC_FLAG_PASS2 0x0400   ///< use internal 2pass ratecontrol in second pass mode
 307 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
 308 #define CODEC_FLAG_GRAY  0x2000   ///< only decode/encode grayscale
 309 #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
 310 #define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding
 311 #define CODEC_FLAG_TRUNCATED  0x00010000 /** input bitstream might be truncated at a random location instead
 312                                             of only at frame boundaries */
 313 #define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< normalize adaptive quantization
 314 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
 315 #define CODEC_FLAG_LOW_DELAY      0x00080000 ///< force low delay
 316 #define CODEC_FLAG_ALT_SCAN       0x00100000 ///< use alternate scan
 317 #define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< use trellis quantization
 318 #define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< place global headers in extradata instead of every keyframe
 319 #define CODEC_FLAG_BITEXACT       0x00800000 ///< use only bitexact stuff (except (i)dct)
 320 /* Fx : Flag for h263+ extra options */
 321 #define CODEC_FLAG_H263P_AIC      0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
 322 #define CODEC_FLAG_AC_PRED        0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
 323 #define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector
 324 #define CODEC_FLAG_CBP_RD         0x04000000 ///< use rate distortion optimization for cbp
 325 #define CODEC_FLAG_QP_RD          0x08000000 ///< use rate distortion optimization for qp selectioon
 326 #define CODEC_FLAG_H263P_AIV      0x00000008 ///< H263 Alternative inter vlc
 327 #define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
 328 #define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
 329 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
 330 #define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
 331 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
 332 #define CODEC_FLAG_CLOSED_GOP     ((int)0x80000000)
 333 #define CODEC_FLAG2_FAST          0x00000001 ///< allow non spec compliant speedup tricks
 334 #define CODEC_FLAG2_STRICT_GOP    0x00000002 ///< strictly enforce GOP size
 335 #define CODEC_FLAG2_NO_OUTPUT     0x00000004 ///< skip bitstream encoding
 336 #define CODEC_FLAG2_LOCAL_HEADER  0x00000008 ///< place global headers at every keyframe instead of in extradata
 337 #define CODEC_FLAG2_BPYRAMID      0x00000010 ///< H.264 allow b-frames to be used as references
 338 #define CODEC_FLAG2_WPRED         0x00000020 ///< H.264 weighted biprediction for b-frames
 339 #define CODEC_FLAG2_MIXED_REFS    0x00000040 ///< H.264 multiple references per partition
 340 #define CODEC_FLAG2_8X8DCT        0x00000080 ///< H.264 high profile 8x8 transform
 341 #define CODEC_FLAG2_FASTPSKIP     0x00000100 ///< H.264 fast pskip
 342 #define CODEC_FLAG2_AUD           0x00000200 ///< H.264 access unit delimiters
 343 #define CODEC_FLAG2_BRDO          0x00000400 ///< b-frame rate-distortion optimization
 344 #define CODEC_FLAG2_INTRA_VLC     0x00000800 ///< use MPEG-2 intra VLC table
 345 #define CODEC_FLAG2_MEMC_ONLY     0x00001000 ///< only do ME/MC (I frames -> ref, P frame -> ME+MC)
 346
 347 /* Unsupported options :
 348  *              Syntax Arithmetic coding (SAC)
 349  *              Reference Picture Selection
 350  *              Independant Segment Decoding */
 351 /* /Fx */
 352 /* codec capabilities */
 353
 354 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
 355 /**
 356  * Codec uses get_buffer() for allocating buffers.
 357  * direct rendering method 1
 358  */
 359 #define CODEC_CAP_DR1             0x0002
 360 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
 361    used */
 362 #define CODEC_CAP_PARSE_ONLY      0x0004
 363 #define CODEC_CAP_TRUNCATED       0x0008
 364 /* codec can export data for HW decoding (XvMC) */
 365 #define CODEC_CAP_HWACCEL         0x0010
 366 /**
 367  * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
 368  * if this is not set, the codec is guranteed to never be feeded with NULL data
 369  */
 370 #define CODEC_CAP_DELAY           0x0020
 371
 372 //the following defines may change, don't expect compatibility if you use them
 373 #define MB_TYPE_INTRA4x4   0x0001
 374 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
 375 #define MB_TYPE_INTRA_PCM  0x0004 //FIXME h264 specific
 376 #define MB_TYPE_16x16      0x0008
 377 #define MB_TYPE_16x8       0x0010
 378 #define MB_TYPE_8x16       0x0020
 379 #define MB_TYPE_8x8        0x0040
 380 #define MB_TYPE_INTERLACED 0x0080
 381 #define MB_TYPE_DIRECT2     0x0100 //FIXME
 382 #define MB_TYPE_ACPRED     0x0200
 383 #define MB_TYPE_GMC        0x0400
 384 #define MB_TYPE_SKIP       0x0800
 385 #define MB_TYPE_P0L0       0x1000
 386 #define MB_TYPE_P1L0       0x2000
 387 #define MB_TYPE_P0L1       0x4000
 388 #define MB_TYPE_P1L1       0x8000
 389 #define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
 390 #define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
 391 #define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
 392 #define MB_TYPE_QUANT      0x00010000
 393 #define MB_TYPE_CBP        0x00020000
 394 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
 395
 396 /**
 397  * Pan Scan area.
 398  * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
 399  */
 400 typedef struct AVPanScan{
 401     /**
 402      * id.
 403      * - encoding: set by user.
 404      * - decoding: set by lavc
 405      */
 406     int id;
 407
 408     /**
 409      * width and height in 1/16 pel
 410      * - encoding: set by user.
 411      * - decoding: set by lavc
 412      */
 413     int width;
 414     int height;
 415
 416     /**
 417      * position of the top left corner in 1/16 pel for up to 3 fields/frames.
 418      * - encoding: set by user.
 419      * - decoding: set by lavc
 420      */
 421     int16_t position[3][2];
 422 }AVPanScan;
 423
 424 #define FF_COMMON_FRAME \
 425     /**\
 426      * pointer to the picture planes.\
 427      * this might be different from the first allocated byte\
 428      * - encoding: \
 429      * - decoding: \
 430      */\
 431     uint8_t *data[4];\
 432     int linesize[4];\
 433     /**\
 434      * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
 435      * this isn't used by lavc unless the default get/release_buffer() is used\
 436      * - encoding: \
 437      * - decoding: \
 438      */\
 439     uint8_t *base[4];\
 440     /**\
 441      * 1 -> keyframe, 0-> not\
 442      * - encoding: set by lavc\
 443      * - decoding: set by lavc\
 444      */\
 445     int key_frame;\
 446 \
 447     /**\
 448      * picture type of the frame, see ?_TYPE below.\
 449      * - encoding: set by lavc for coded_picture (and set by user for input)\
 450      * - decoding: set by lavc\
 451      */\
 452     int pict_type;\
 453 \
 454     /**\
 455      * presentation timestamp in time_base units (time when frame should be shown to user)\
 456      * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
 457      * - encoding: MUST be set by user\
 458      * - decoding: set by lavc\
 459      */\
 460     int64_t pts;\
 461 \
 462     /**\
 463      * picture number in bitstream order.\
 464      * - encoding: set by\
 465      * - decoding: set by lavc\
 466      */\
 467     int coded_picture_number;\
 468     /**\
 469      * picture number in display order.\
 470      * - encoding: set by\
 471      * - decoding: set by lavc\
 472      */\
 473     int display_picture_number;\
 474 \
 475     /**\
 476      * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
 477      * - encoding: set by lavc for coded_picture (and set by user for input)\
 478      * - decoding: set by lavc\
 479      */\
 480     int quality; \
 481 \
 482     /**\
 483      * buffer age (1->was last buffer and dint change, 2->..., ...).\
 484      * set to INT_MAX if the buffer has not been used yet \
 485      * - encoding: unused\
 486      * - decoding: MUST be set by get_buffer()\
 487      */\
 488     int age;\
 489 \
 490     /**\
 491      * is this picture used as reference\
 492      * - encoding: unused\
 493      * - decoding: set by lavc (before get_buffer() call))\
 494      */\
 495     int reference;\
 496 \
 497     /**\
 498      * QP table\
 499      * - encoding: unused\
 500      * - decoding: set by lavc\
 501      */\
 502     int8_t *qscale_table;\
 503     /**\
 504      * QP store stride\
 505      * - encoding: unused\
 506      * - decoding: set by lavc\
 507      */\
 508     int qstride;\
 509 \
 510     /**\
 511      * mbskip_table[mb]>=1 if MB didnt change\
 512      * stride= mb_width = (width+15)>>4\
 513      * - encoding: unused\
 514      * - decoding: set by lavc\
 515      */\
 516     uint8_t *mbskip_table;\
 517 \
 518     /**\
 519      * Motion vector table.\
 520      * @code\
 521      * example:\
 522      * int mv_sample_log2= 4 - motion_subsample_log2;\
 523      * int mb_width= (width+15)>>4;\
 524      * int mv_stride= (mb_width << mv_sample_log2) + 1;\
 525      * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
 526      * @endcode\
 527      * - encoding: set by user\
 528      * - decoding: set by lavc\
 529      */\
 530     int16_t (*motion_val[2])[2];\
 531 \
 532     /**\
 533      * Macroblock type table\
 534      * mb_type_base + mb_width + 2\
 535      * - encoding: set by user\
 536      * - decoding: set by lavc\
 537      */\
 538     uint32_t *mb_type;\
 539 \
 540     /**\
 541      * log2 of the size of the block which a single vector in motion_val represents: \
 542      * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
 543      * - encoding: unused\
 544      * - decoding: set by lavc\
 545      */\
 546     uint8_t motion_subsample_log2;\
 547 \
 548     /**\
 549      * for some private data of the user\
 550      * - encoding: unused\
 551      * - decoding: set by user\
 552      */\
 553     void *opaque;\
 554 \
 555     /**\
 556      * error\
 557      * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
 558      * - decoding: unused\
 559      */\
 560     uint64_t error[4];\
 561 \
 562     /**\
 563      * type of the buffer (to keep track of who has to dealloc data[*])\
 564      * - encoding: set by the one who allocs it\
 565      * - decoding: set by the one who allocs it\
 566      * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
 567      */\
 568     int type;\
 569     \
 570     /**\
 571      * when decoding, this signal how much the picture must be delayed.\
 572      * extra_delay = repeat_pict / (2*fps)\
 573      * - encoding: unused\
 574      * - decoding: set by lavc\
 575      */\
 576     int repeat_pict;\
 577     \
 578     /**\
 579      * \
 580      */\
 581     int qscale_type;\
 582     \
 583     /**\
 584      * The content of the picture is interlaced.\
 585      * - encoding: set by user\
 586      * - decoding: set by lavc (default 0)\
 587      */\
 588     int interlaced_frame;\
 589     \
 590     /**\
 591      * if the content is interlaced, is top field displayed first.\
 592      * - encoding: set by user\
 593      * - decoding: set by lavc\
 594      */\
 595     int top_field_first;\
 596     \
 597     /**\
 598      * Pan scan.\
 599      * - encoding: set by user\
 600      * - decoding: set by lavc\
 601      */\
 602     AVPanScan *pan_scan;\
 603     \
 604     /**\
 605      * tell user application that palette has changed from previous frame.\
 606      * - encoding: ??? (no palette-enabled encoder yet)\
 607      * - decoding: set by lavc (default 0)\
 608      */\
 609     int palette_has_changed;\
 610     \
 611     /**\
 612      * Codec suggestion on buffer type if != 0\
 613      * - encoding: unused\
 614      * - decoding: set by lavc (before get_buffer() call))\
 615      */\
 616     int buffer_hints;\
 617 \
 618     /**\
 619      * DCT coeffitients\
 620      * - encoding: unused\
 621      * - decoding: set by lavc\
 622      */\
 623     short *dct_coeff;\
 624 \
 625     /**\
 626      * Motion referece frame index\
 627      * - encoding: set by user\
 628      * - decoding: set by lavc\
 629      */\
 630     int8_t *ref_index[2];
 631
 632 #define FF_QSCALE_TYPE_MPEG1 0
 633 #define FF_QSCALE_TYPE_MPEG2 1
 634 #define FF_QSCALE_TYPE_H264  2
 635
 636 #define FF_BUFFER_TYPE_INTERNAL 1
 637 #define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
 638 #define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
 639 #define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, don't dealloc anything
 640
 641
 642 #define FF_I_TYPE 1 // Intra
 643 #define FF_P_TYPE 2 // Predicted
 644 #define FF_B_TYPE 3 // Bi-dir predicted
 645 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
 646 #define FF_SI_TYPE 5
 647 #define FF_SP_TYPE 6
 648
 649 #define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
 650 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
 651 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
 652 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
 653
 654 /**
 655  * Audio Video Frame.
 656  */
 657 typedef struct AVFrame {
 658     FF_COMMON_FRAME
 659 } AVFrame;
 660
 661 #define DEFAULT_FRAME_RATE_BASE 1001000
 662
 663 /**
 664  * Used by av_log
 665  */
 666 typedef struct AVCLASS AVClass;
 667 struct AVCLASS {
 668     const char* class_name;
 669     const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
 670                                         or AVFormatContext, which begin with an AVClass.
 671                                         Needed because av_log is in libavcodec and has no visibility
 672                                         of AVIn/OutputFormat */
 673     struct AVOption *option;
 674 };
 675
 676 /**
 677  * main external api structure.
 678  */
 679 typedef struct AVCodecContext {
 680     /**
 681      * Info on struct for av_log
 682      * - set by avcodec_alloc_context
 683      */
 684     AVClass *av_class;
 685     /**
 686      * the average bitrate.
 687      * - encoding: set by user. unused for constant quantizer encoding
 688      * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
 689      */
 690     int bit_rate;
 691
 692     /**
 693      * number of bits the bitstream is allowed to diverge from the reference.
 694      *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
 695      * - encoding: set by user. unused for constant quantizer encoding
 696      * - decoding: unused
 697      */
 698     int bit_rate_tolerance;
 699
 700     /**
 701      * CODEC_FLAG_*.
 702      * - encoding: set by user.
 703      * - decoding: set by user.
 704      */
 705     int flags;
 706
 707     /**
 708      * some codecs needs additionnal format info. It is stored here
 709      * - encoding: set by user.
 710      * - decoding: set by lavc. (FIXME is this ok?)
 711      */
 712     int sub_id;
 713
 714     /**
 715      * motion estimation algorithm used for video coding.
 716      * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
 717      * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
 718      * - encoding: MUST be set by user.
 719      * - decoding: unused
 720      */
 721     int me_method;
 722
 723     /**
 724      * some codecs need / can use extra-data like huffman tables.
 725      * mjpeg: huffman tables
 726      * rv10: additional flags
 727      * mpeg4: global headers (they can be in the bitstream or here)
 728      * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
 729      * then extradata_size to avoid prolems if its read with the bitstream reader
 730      * the bytewise contents of extradata must not depend on the architecture or cpu endianness
 731      * - encoding: set/allocated/freed by lavc.
 732      * - decoding: set/allocated/freed by user.
 733      */
 734     void *extradata;
 735     int extradata_size;
 736
 737     /**
 738      * this is the fundamental unit of time (in seconds) in terms
 739      * of which frame timestamps are represented. for fixed-fps content,
 740      * timebase should be 1/framerate and timestamp increments should be
 741      * identically 1.
 742      * - encoding: MUST be set by user
 743      * - decoding: set by lavc.
 744      */
 745     AVRational time_base;
 746
 747     /* video only */
 748     /**
 749      * picture width / height.
 750      * - encoding: MUST be set by user.
 751      * - decoding: set by lavc.
 752      * Note, for compatibility its possible to set this instead of
 753      * coded_width/height before decoding
 754      */
 755     int width, height;
 756
 757 #define FF_ASPECT_EXTENDED 15
 758
 759     /**
 760      * the number of pictures in a group of pitures, or 0 for intra_only.
 761      * - encoding: set by user.
 762      * - decoding: unused
 763      */
 764     int gop_size;
 765
 766     /**
 767      * pixel format, see PIX_FMT_xxx.
 768      * - encoding: set by user.
 769      * - decoding: set by lavc.
 770      */
 771     enum PixelFormat pix_fmt;
 772
 773     /**
 774      * Frame rate emulation. If not zero lower layer (i.e. format handler)
 775      * has to read frames at native frame rate.
 776      * - encoding: set by user.
 777      * - decoding: unused.
 778      */
 779     int rate_emu;
 780
 781     /**
 782      * if non NULL, 'draw_horiz_band' is called by the libavcodec
 783      * decoder to draw an horizontal band. It improve cache usage. Not
 784      * all codecs can do that. You must check the codec capabilities
 785      * before
 786      * - encoding: unused
 787      * - decoding: set by user.
 788      * @param height the height of the slice
 789      * @param y the y position of the slice
 790      * @param type 1->top field, 2->bottom field, 3->frame
 791      * @param offset offset into the AVFrame.data from which the slice should be read
 792      */
 793     void (*draw_horiz_band)(struct AVCodecContext *s,
 794                             const AVFrame *src, int offset[4],
 795                             int y, int type, int height);
 796
 797     /* audio only */
 798     int sample_rate; ///< samples per sec
 799     int channels;
 800
 801     /**
 802      * audio sample format.
 803      * - encoding: set by user.
 804      * - decoding: set by lavc.
 805      */
 806     enum SampleFormat sample_fmt;  ///< sample format, currenly unused
 807
 808     /* the following data should not be initialized */
 809     /**
 810      * samples per packet. initialized when calling 'init'
 811      */
 812     int frame_size;
 813     int frame_number;   ///< audio or video frame number
 814     int real_pict_num;  ///< returns the real picture number of previous encoded frame
 815
 816     /**
 817      * number of frames the decoded output will be delayed relative to
 818      * the encoded input.
 819      * - encoding: set by lavc.
 820      * - decoding: unused
 821      */
 822     int delay;
 823
 824     /* - encoding parameters */
 825     float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
 826     float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
 827
 828     /**
 829      * minimum quantizer.
 830      * - encoding: set by user.
 831      * - decoding: unused
 832      */
 833     int qmin;
 834
 835     /**
 836      * maximum quantizer.
 837      * - encoding: set by user.
 838      * - decoding: unused
 839      */
 840     int qmax;
 841
 842     /**
 843      * maximum quantizer difference etween frames.
 844      * - encoding: set by user.
 845      * - decoding: unused
 846      */
 847     int max_qdiff;
 848
 849     /**
 850      * maximum number of b frames between non b frames.
 851      * note: the output will be delayed by max_b_frames+1 relative to the input
 852      * - encoding: set by user.
 853      * - decoding: unused
 854      */
 855     int max_b_frames;
 856
 857     /**
 858      * qscale factor between ip and b frames.
 859      * - encoding: set by user.
 860      * - decoding: unused
 861      */
 862     float b_quant_factor;
 863
 864     /** obsolete FIXME remove */
 865     int rc_strategy;
 866 #define FF_RC_STRATEGY_XVID 1
 867
 868     int b_frame_strategy;
 869
 870     /**
 871      * hurry up amount.
 872      * deprecated in favor of skip_idct and skip_frame
 873      * - encoding: unused
 874      * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
 875      */
 876     int hurry_up;
 877
 878     struct AVCodec *codec;
 879
 880     void *priv_data;
 881
 882     /* unused, FIXME remove*/
 883     int rtp_mode;
 884
 885     int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
 886                             /* do it's best to deliver a chunk with size    */
 887                             /* below rtp_payload_size, the chunk will start */
 888                             /* with a start code on some codecs like H.263  */
 889                             /* This doesn't take account of any particular  */
 890                             /* headers inside the transmited RTP payload    */
 891
 892
 893     /* The RTP callback: This function is called   */
 894     /* every time the encoder has a packet to send */
 895     /* Depends on the encoder if the data starts   */
 896     /* with a Start Code (it should) H.263 does.   */
 897     /* mb_nb contains the number of macroblocks    */
 898     /* encoded in the RTP payload                  */
 899     void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
 900
 901     /* statistics, used for 2-pass encoding */
 902     int mv_bits;
 903     int header_bits;
 904     int i_tex_bits;
 905     int p_tex_bits;
 906     int i_count;
 907     int p_count;
 908     int skip_count;
 909     int misc_bits;
 910
 911     /**
 912      * number of bits used for the previously encoded frame.
 913      * - encoding: set by lavc
 914      * - decoding: unused
 915      */
 916     int frame_bits;
 917
 918     /**
 919      * private data of the user, can be used to carry app specific stuff.
 920      * - encoding: set by user
 921      * - decoding: set by user
 922      */
 923     void *opaque;
 924
 925     char codec_name[32];
 926     enum CodecType codec_type; /* see CODEC_TYPE_xxx */
 927     enum CodecID codec_id; /* see CODEC_ID_xxx */
 928
 929     /**
 930      * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
 931      * this is used to workaround some encoder bugs
 932      * - encoding: set by user, if not then the default based on codec_id will be used
 933      * - decoding: set by user, will be converted to upper case by lavc during init
 934      */
 935     unsigned int codec_tag;
 936
 937     /**
 938      * workaround bugs in encoders which sometimes cannot be detected automatically.
 939      * - encoding: set by user
 940      * - decoding: set by user
 941      */
 942     int workaround_bugs;
 943 #define FF_BUG_AUTODETECT       1  ///< autodetection
 944 #define FF_BUG_OLD_MSMPEG4      2
 945 #define FF_BUG_XVID_ILACE       4
 946 #define FF_BUG_UMP4             8
 947 #define FF_BUG_NO_PADDING       16
 948 #define FF_BUG_AMV              32
 949 #define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
 950 #define FF_BUG_QPEL_CHROMA      64
 951 #define FF_BUG_STD_QPEL         128
 952 #define FF_BUG_QPEL_CHROMA2     256
 953 #define FF_BUG_DIRECT_BLOCKSIZE 512
 954 #define FF_BUG_EDGE             1024
 955 #define FF_BUG_HPEL_CHROMA      2048
 956 #define FF_BUG_DC_CLIP          4096
 957 #define FF_BUG_MS               8192 ///< workaround various bugs in microsofts broken decoders
 958 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
 959
 960     /**
 961      * luma single coeff elimination threshold.
 962      * - encoding: set by user
 963      * - decoding: unused
 964      */
 965     int luma_elim_threshold;
 966
 967     /**
 968      * chroma single coeff elimination threshold.
 969      * - encoding: set by user
 970      * - decoding: unused
 971      */
 972     int chroma_elim_threshold;
 973
 974     /**
 975      * strictly follow the std (MPEG4, ...).
 976      * - encoding: set by user
 977      * - decoding: unused
 978      */
 979     int strict_std_compliance;
 980 #define FF_COMPLIANCE_VERY_STRICT   2 ///< strictly conform to a older more strict version of the spec or reference software
 981 #define FF_COMPLIANCE_STRICT        1 ///< strictly conform to all the things in the spec no matter what consequences
 982 #define FF_COMPLIANCE_NORMAL        0
 983 #define FF_COMPLIANCE_INOFFICIAL   -1 ///< allow inofficial extensions
 984 #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
 985
 986     /**
 987      * qscale offset between ip and b frames.
 988      * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
 989      * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
 990      * - encoding: set by user.
 991      * - decoding: unused
 992      */
 993     float b_quant_offset;
 994
 995     /**
 996      * error resilience higher values will detect more errors but may missdetect
 997      * some more or less valid parts as errors.
 998      * - encoding: unused
 999      * - decoding: set by user
1000      */
1001     int error_resilience;
1002 #define FF_ER_CAREFUL         1
1003 #define FF_ER_COMPLIANT       2
1004 #define FF_ER_AGGRESSIVE      3
1005 #define FF_ER_VERY_AGGRESSIVE 4
1006
1007     /**
1008      * called at the beginning of each frame to get a buffer for it.
1009      * if pic.reference is set then the frame will be read later by lavc
1010      * avcodec_align_dimensions() should be used to find the required width and
1011      * height, as they normally need to be rounded up to the next multiple of 16
1012      * - encoding: unused
1013      * - decoding: set by lavc, user can override
1014      */
1015     int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1016
1017     /**
1018      * called to release buffers which where allocated with get_buffer.
1019      * a released buffer can be reused in get_buffer()
1020      * pic.data[*] must be set to NULL
1021      * - encoding: unused
1022      * - decoding: set by lavc, user can override
1023      */
1024     void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1025
1026     /**
1027      * if 1 the stream has a 1 frame delay during decoding.
1028      * - encoding: set by lavc
1029      * - decoding: set by lavc
1030      */
1031     int has_b_frames;
1032
1033     /**
1034      * number of bytes per packet if constant and known or 0
1035      * used by some WAV based audio codecs
1036      */
1037     int block_align;
1038
1039     int parse_only; /* - decoding only: if true, only parsing is done
1040                        (function avcodec_parse_frame()). The frame
1041                        data is returned. Only MPEG codecs support this now. */
1042
1043     /**
1044      * 0-> h263 quant 1-> mpeg quant.
1045      * - encoding: set by user.
1046      * - decoding: unused
1047      */
1048     int mpeg_quant;
1049
1050     /**
1051      * pass1 encoding statistics output buffer.
1052      * - encoding: set by lavc
1053      * - decoding: unused
1054      */
1055     char *stats_out;
1056
1057     /**
1058      * pass2 encoding statistics input buffer.
1059      * concatenated stuff from stats_out of pass1 should be placed here
1060      * - encoding: allocated/set/freed by user
1061      * - decoding: unused
1062      */
1063     char *stats_in;
1064
1065     /**
1066      * ratecontrol qmin qmax limiting method.
1067      * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1068      * - encoding: set by user.
1069      * - decoding: unused
1070      */
1071     float rc_qsquish;
1072
1073     float rc_qmod_amp;
1074     int rc_qmod_freq;
1075
1076     /**
1077      * ratecontrol override, see RcOverride.
1078      * - encoding: allocated/set/freed by user.
1079      * - decoding: unused
1080      */
1081     RcOverride *rc_override;
1082     int rc_override_count;
1083
1084     /**
1085      * rate control equation.
1086      * - encoding: set by user
1087      * - decoding: unused
1088      */
1089     char *rc_eq;
1090
1091     /**
1092      * maximum bitrate.
1093      * - encoding: set by user.
1094      * - decoding: unused
1095      */
1096     int rc_max_rate;
1097
1098     /**
1099      * minimum bitrate.
1100      * - encoding: set by user.
1101      * - decoding: unused
1102      */
1103     int rc_min_rate;
1104
1105     /**
1106      * decoder bitstream buffer size.
1107      * - encoding: set by user.
1108      * - decoding: unused
1109      */
1110     int rc_buffer_size;
1111     float rc_buffer_aggressivity;
1112
1113     /**
1114      * qscale factor between p and i frames.
1115      * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1116      * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1117      * - encoding: set by user.
1118      * - decoding: unused
1119      */
1120     float i_quant_factor;
1121
1122     /**
1123      * qscale offset between p and i frames.
1124      * - encoding: set by user.
1125      * - decoding: unused
1126      */
1127     float i_quant_offset;
1128
1129     /**
1130      * initial complexity for pass1 ratecontrol.
1131      * - encoding: set by user.
1132      * - decoding: unused
1133      */
1134     float rc_initial_cplx;
1135
1136     /**
1137      * dct algorithm, see FF_DCT_* below.
1138      * - encoding: set by user
1139      * - decoding: unused
1140      */
1141     int dct_algo;
1142 #define FF_DCT_AUTO    0
1143 #define FF_DCT_FASTINT 1
1144 #define FF_DCT_INT     2
1145 #define FF_DCT_MMX     3
1146 #define FF_DCT_MLIB    4
1147 #define FF_DCT_ALTIVEC 5
1148 #define FF_DCT_FAAN    6
1149
1150     /**
1151      * luminance masking (0-> disabled).
1152      * - encoding: set by user
1153      * - decoding: unused
1154      */
1155     float lumi_masking;
1156
1157     /**
1158      * temporary complexity masking (0-> disabled).
1159      * - encoding: set by user
1160      * - decoding: unused
1161      */
1162     float temporal_cplx_masking;
1163
1164     /**
1165      * spatial complexity masking (0-> disabled).
1166      * - encoding: set by user
1167      * - decoding: unused
1168      */
1169     float spatial_cplx_masking;
1170
1171     /**
1172      * p block masking (0-> disabled).
1173      * - encoding: set by user
1174      * - decoding: unused
1175      */
1176     float p_masking;
1177
1178     /**
1179      * darkness masking (0-> disabled).
1180      * - encoding: set by user
1181      * - decoding: unused
1182      */
1183     float dark_masking;
1184
1185
1186     /* for binary compatibility */
1187     int unused;
1188
1189     /**
1190      * idct algorithm, see FF_IDCT_* below.
1191      * - encoding: set by user
1192      * - decoding: set by user
1193      */
1194     int idct_algo;
1195 #define FF_IDCT_AUTO         0
1196 #define FF_IDCT_INT          1
1197 #define FF_IDCT_SIMPLE       2
1198 #define FF_IDCT_SIMPLEMMX    3
1199 #define FF_IDCT_LIBMPEG2MMX  4
1200 #define FF_IDCT_PS2          5
1201 #define FF_IDCT_MLIB         6
1202 #define FF_IDCT_ARM          7
1203 #define FF_IDCT_ALTIVEC      8
1204 #define FF_IDCT_SH4          9
1205 #define FF_IDCT_SIMPLEARM    10
1206 #define FF_IDCT_H264         11
1207 #define FF_IDCT_VP3          12
1208 #define FF_IDCT_IPP          13
1209 #define FF_IDCT_XVIDMMX      14
1210
1211     /**
1212      * slice count.
1213      * - encoding: set by lavc
1214      * - decoding: set by user (or 0)
1215      */
1216     int slice_count;
1217     /**
1218      * slice offsets in the frame in bytes.
1219      * - encoding: set/allocated by lavc
1220      * - decoding: set/allocated by user (or NULL)
1221      */
1222     int *slice_offset;
1223
1224     /**
1225      * error concealment flags.
1226      * - encoding: unused
1227      * - decoding: set by user
1228      */
1229     int error_concealment;
1230 #define FF_EC_GUESS_MVS   1
1231 #define FF_EC_DEBLOCK     2
1232
1233     /**
1234      * dsp_mask could be add used to disable unwanted CPU features
1235      * CPU features (i.e. MMX, SSE. ...)
1236      *
1237      * with FORCE flag you may instead enable given CPU features
1238      * (Dangerous: usable in case of misdetection, improper usage however will
1239      * result into program crash)
1240      */
1241     unsigned dsp_mask;
1242 #define FF_MM_FORCE    0x80000000 /* force usage of selected flags (OR) */
1243     /* lower 16 bits - CPU features */
1244 #ifdef HAVE_MMX
1245 #define FF_MM_MMX      0x0001 /* standard MMX */
1246 #define FF_MM_3DNOW    0x0004 /* AMD 3DNOW */
1247 #define FF_MM_MMXEXT   0x0002 /* SSE integer functions or AMD MMX ext */
1248 #define FF_MM_SSE      0x0008 /* SSE functions */
1249 #define FF_MM_SSE2     0x0010 /* PIV SSE2 functions */
1250 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1251 #endif /* HAVE_MMX */
1252 #ifdef HAVE_IWMMXT
1253 #define FF_MM_IWMMXT   0x0100 /* XScale IWMMXT */
1254 #endif /* HAVE_IWMMXT */
1255
1256     /**
1257      * bits per sample/pixel from the demuxer (needed for huffyuv).
1258      * - encoding: set by lavc
1259      * - decoding: set by user
1260      */
1261      int bits_per_sample;
1262
1263     /**
1264      * prediction method (needed for huffyuv).
1265      * - encoding: set by user
1266      * - decoding: unused
1267      */
1268      int prediction_method;
1269 #define FF_PRED_LEFT   0
1270 #define FF_PRED_PLANE  1
1271 #define FF_PRED_MEDIAN 2
1272
1273     /**
1274      * sample aspect ratio (0 if unknown).
1275      * numerator and denominator must be relative prime and smaller then 256 for some video standards
1276      * - encoding: set by user.
1277      * - decoding: set by lavc.
1278      */
1279     AVRational sample_aspect_ratio;
1280
1281     /**
1282      * the picture in the bitstream.
1283      * - encoding: set by lavc
1284      * - decoding: set by lavc
1285      */
1286     AVFrame *coded_frame;
1287
1288     /**
1289      * debug.
1290      * - encoding: set by user.
1291      * - decoding: set by user.
1292      */
1293     int debug;
1294 #define FF_DEBUG_PICT_INFO 1
1295 #define FF_DEBUG_RC        2
1296 #define FF_DEBUG_BITSTREAM 4
1297 #define FF_DEBUG_MB_TYPE   8
1298 #define FF_DEBUG_QP        16
1299 #define FF_DEBUG_MV        32
1300 #define FF_DEBUG_DCT_COEFF 0x00000040
1301 #define FF_DEBUG_SKIP      0x00000080
1302 #define FF_DEBUG_STARTCODE 0x00000100
1303 #define FF_DEBUG_PTS       0x00000200
1304 #define FF_DEBUG_ER        0x00000400
1305 #define FF_DEBUG_MMCO      0x00000800
1306 #define FF_DEBUG_BUGS      0x00001000
1307 #define FF_DEBUG_VIS_QP    0x00002000
1308 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1309
1310     /**
1311      * debug.
1312      * - encoding: set by user.
1313      * - decoding: set by user.
1314      */
1315     int debug_mv;
1316 #define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1317 #define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1318 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1319
1320     /**
1321      * error.
1322      * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1323      * - decoding: unused
1324      */
1325     uint64_t error[4];
1326
1327     /**
1328      * minimum MB quantizer.
1329      * - encoding: unused
1330      * - decoding: unused
1331      */
1332     int mb_qmin;
1333
1334     /**
1335      * maximum MB quantizer.
1336      * - encoding: unused
1337      * - decoding: unused
1338      */
1339     int mb_qmax;
1340
1341     /**
1342      * motion estimation compare function.
1343      * - encoding: set by user.
1344      * - decoding: unused
1345      */
1346     int me_cmp;
1347     /**
1348      * subpixel motion estimation compare function.
1349      * - encoding: set by user.
1350      * - decoding: unused
1351      */
1352     int me_sub_cmp;
1353     /**
1354      * macroblock compare function (not supported yet).
1355      * - encoding: set by user.
1356      * - decoding: unused
1357      */
1358     int mb_cmp;
1359     /**
1360      * interlaced dct compare function
1361      * - encoding: set by user.
1362      * - decoding: unused
1363      */
1364     int ildct_cmp;
1365 #define FF_CMP_SAD  0
1366 #define FF_CMP_SSE  1
1367 #define FF_CMP_SATD 2
1368 #define FF_CMP_DCT  3
1369 #define FF_CMP_PSNR 4
1370 #define FF_CMP_BIT  5
1371 #define FF_CMP_RD   6
1372 #define FF_CMP_ZERO 7
1373 #define FF_CMP_VSAD 8
1374 #define FF_CMP_VSSE 9
1375 #define FF_CMP_NSSE 10
1376 #define FF_CMP_W53  11
1377 #define FF_CMP_W97  12
1378 #define FF_CMP_DCTMAX 13
1379 #define FF_CMP_DCT264 14
1380 #define FF_CMP_CHROMA 256
1381
1382     /**
1383      * ME diamond size & shape.
1384      * - encoding: set by user.
1385      * - decoding: unused
1386      */
1387     int dia_size;
1388
1389     /**
1390      * amount of previous MV predictors (2a+1 x 2a+1 square).
1391      * - encoding: set by user.
1392      * - decoding: unused
1393      */
1394     int last_predictor_count;
1395
1396     /**
1397      * pre pass for motion estimation.
1398      * - encoding: set by user.
1399      * - decoding: unused
1400      */
1401     int pre_me;
1402
1403     /**
1404      * motion estimation pre pass compare function.
1405      * - encoding: set by user.
1406      * - decoding: unused
1407      */
1408     int me_pre_cmp;
1409
1410     /**
1411      * ME pre pass diamond size & shape.
1412      * - encoding: set by user.
1413      * - decoding: unused
1414      */
1415     int pre_dia_size;
1416
1417     /**
1418      * subpel ME quality.
1419      * - encoding: set by user.
1420      * - decoding: unused
1421      */
1422     int me_subpel_quality;
1423
1424     /**
1425      * callback to negotiate the pixelFormat.
1426      * @param fmt is the list of formats which are supported by the codec,
1427      * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1428      * the first is allways the native one
1429      * @return the choosen format
1430      * - encoding: unused
1431      * - decoding: set by user, if not set then the native format will always be choosen
1432      */
1433     enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1434
1435     /**
1436      * DTG active format information (additionnal aspect ratio
1437      * information only used in DVB MPEG2 transport streams). 0 if
1438      * not set.
1439      *
1440      * - encoding: unused.
1441      * - decoding: set by decoder
1442      */
1443     int dtg_active_format;
1444 #define FF_DTG_AFD_SAME         8
1445 #define FF_DTG_AFD_4_3          9
1446 #define FF_DTG_AFD_16_9         10
1447 #define FF_DTG_AFD_14_9         11
1448 #define FF_DTG_AFD_4_3_SP_14_9  13
1449 #define FF_DTG_AFD_16_9_SP_14_9 14
1450 #define FF_DTG_AFD_SP_4_3       15
1451
1452     /**
1453      * Maximum motion estimation search range in subpel units.
1454      * if 0 then no limit
1455      *
1456      * - encoding: set by user.
1457      * - decoding: unused.
1458      */
1459     int me_range;
1460
1461     /**
1462      * intra quantizer bias.
1463      * - encoding: set by user.
1464      * - decoding: unused
1465      */
1466     int intra_quant_bias;
1467 #define FF_DEFAULT_QUANT_BIAS 999999
1468
1469     /**
1470      * inter quantizer bias.
1471      * - encoding: set by user.
1472      * - decoding: unused
1473      */
1474     int inter_quant_bias;
1475
1476     /**
1477      * color table ID.
1478      * - encoding: unused.
1479      * - decoding: which clrtable should be used for 8bit RGB images
1480      *             table have to be stored somewhere FIXME
1481      */
1482     int color_table_id;
1483
1484     /**
1485      * internal_buffer count.
1486      * Don't touch, used by lavc default_get_buffer()
1487      */
1488     int internal_buffer_count;
1489
1490     /**
1491      * internal_buffers.
1492      * Don't touch, used by lavc default_get_buffer()
1493      */
1494     void *internal_buffer;
1495
1496 #define FF_LAMBDA_SHIFT 7
1497 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1498 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1499 #define FF_LAMBDA_MAX (256*128-1)
1500
1501 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1502     /**
1503      * global quality for codecs which cannot change it per frame.
1504      * this should be proportional to MPEG1/2/4 qscale.
1505      * - encoding: set by user.
1506      * - decoding: unused
1507      */
1508     int global_quality;
1509
1510 #define FF_CODER_TYPE_VLC   0
1511 #define FF_CODER_TYPE_AC    1
1512     /**
1513      * coder type
1514      * - encoding: set by user.
1515      * - decoding: unused
1516      */
1517     int coder_type;
1518
1519     /**
1520      * context model
1521      * - encoding: set by user.
1522      * - decoding: unused
1523      */
1524     int context_model;
1525 #if 0
1526     /**
1527      *
1528      * - encoding: unused
1529      * - decoding: set by user.
1530      */
1531     uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1532 #endif
1533
1534     /**
1535      * slice flags
1536      * - encoding: unused
1537      * - decoding: set by user.
1538      */
1539     int slice_flags;
1540 #define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1541 #define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1542 #define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1543
1544     /**
1545      * XVideo Motion Acceleration
1546      * - encoding: forbidden
1547      * - decoding: set by decoder
1548      */
1549     int xvmc_acceleration;
1550
1551     /**
1552      * macroblock decision mode
1553      * - encoding: set by user.
1554      * - decoding: unused
1555      */
1556     int mb_decision;
1557 #define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1558 #define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1559 #define FF_MB_DECISION_RD     2        ///< rate distoration
1560
1561     /**
1562      * custom intra quantization matrix
1563      * - encoding: set by user, can be NULL
1564      * - decoding: set by lavc
1565      */
1566     uint16_t *intra_matrix;
1567
1568     /**
1569      * custom inter quantization matrix
1570      * - encoding: set by user, can be NULL
1571      * - decoding: set by lavc
1572      */
1573     uint16_t *inter_matrix;
1574
1575     /**
1576      * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1577      * this is used to workaround some encoder bugs
1578      * - encoding: unused
1579      * - decoding: set by user, will be converted to upper case by lavc during init
1580      */
1581     unsigned int stream_codec_tag;
1582
1583     /**
1584      * scene change detection threshold.
1585      * 0 is default, larger means fewer detected scene changes
1586      * - encoding: set by user.
1587      * - decoding: unused
1588      */
1589     int scenechange_threshold;
1590
1591     /**
1592      * minimum lagrange multipler
1593      * - encoding: set by user.
1594      * - decoding: unused
1595      */
1596     int lmin;
1597
1598     /**
1599      * maximum lagrange multipler
1600      * - encoding: set by user.
1601      * - decoding: unused
1602      */
1603     int lmax;
1604
1605     /**
1606      * Palette control structure
1607      * - encoding: ??? (no palette-enabled encoder yet)
1608      * - decoding: set by user.
1609      */
1610     struct AVPaletteControl *palctrl;
1611
1612     /**
1613      * noise reduction strength
1614      * - encoding: set by user.
1615      * - decoding: unused
1616      */
1617     int noise_reduction;
1618
1619     /**
1620      * called at the beginning of a frame to get cr buffer for it.
1621      * buffer type (size, hints) must be the same. lavc won't check it.
1622      * lavc will pass previous buffer in pic, function should return
1623      * same buffer or new buffer with old frame "painted" into it.
1624      * if pic.data[0] == NULL must behave like get_buffer().
1625      * - encoding: unused
1626      * - decoding: set by lavc, user can override
1627      */
1628     int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1629
1630     /**
1631      * number of bits which should be loaded into the rc buffer before decoding starts
1632      * - encoding: set by user.
1633      * - decoding: unused
1634      */
1635     int rc_initial_buffer_occupancy;
1636
1637     /**
1638      *
1639      * - encoding: set by user.
1640      * - decoding: unused
1641      */
1642     int inter_threshold;
1643
1644     /**
1645      * CODEC_FLAG2_*.
1646      * - encoding: set by user.
1647      * - decoding: set by user.
1648      */
1649     int flags2;
1650
1651     /**
1652      * simulates errors in the bitstream to test error concealment.
1653      * - encoding: set by user.
1654      * - decoding: unused.
1655      */
1656     int error_rate;
1657
1658     /**
1659      * MP3 antialias algorithm, see FF_AA_* below.
1660      * - encoding: unused
1661      * - decoding: set by user
1662      */
1663     int antialias_algo;
1664 #define FF_AA_AUTO    0
1665 #define FF_AA_FASTINT 1 //not implemented yet
1666 #define FF_AA_INT     2
1667 #define FF_AA_FLOAT   3
1668     /**
1669      * Quantizer noise shaping.
1670      * - encoding: set by user
1671      * - decoding: unused
1672      */
1673     int quantizer_noise_shaping;
1674
1675     /**
1676      * Thread count.
1677      * is used to decide how many independant tasks should be passed to execute()
1678      * - encoding: set by user
1679      * - decoding: set by user
1680      */
1681     int thread_count;
1682
1683     /**
1684      * the codec may call this to execute several independant things. it will return only after
1685      * finishing all tasks, the user may replace this with some multithreaded implementation, the
1686      * default implementation will execute the parts serially
1687      * @param count the number of things to execute
1688      * - encoding: set by lavc, user can override
1689      * - decoding: set by lavc, user can override
1690      */
1691     int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1692
1693     /**
1694      * Thread opaque.
1695      * can be used by execute() to store some per AVCodecContext stuff.
1696      * - encoding: set by execute()
1697      * - decoding: set by execute()
1698      */
1699     void *thread_opaque;
1700
1701     /**
1702      * Motion estimation threshold. under which no motion estimation is
1703      * performed, but instead the user specified motion vectors are used
1704      *
1705      * - encoding: set by user
1706      * - decoding: unused
1707      */
1708      int me_threshold;
1709
1710     /**
1711      * Macroblock threshold. under which the user specified macroblock types will be used
1712      * - encoding: set by user
1713      * - decoding: unused
1714      */
1715      int mb_threshold;
1716
1717     /**
1718      * precision of the intra dc coefficient - 8.
1719      * - encoding: set by user
1720      * - decoding: unused
1721      */
1722      int intra_dc_precision;
1723
1724     /**
1725      * noise vs. sse weight for the nsse comparsion function.
1726      * - encoding: set by user
1727      * - decoding: unused
1728      */
1729      int nsse_weight;
1730
1731     /**
1732      * number of macroblock rows at the top which are skipped.
1733      * - encoding: unused
1734      * - decoding: set by user
1735      */
1736      int skip_top;
1737
1738     /**
1739      * number of macroblock rows at the bottom which are skipped.
1740      * - encoding: unused
1741      * - decoding: set by user
1742      */
1743      int skip_bottom;
1744
1745     /**
1746      * profile
1747      * - encoding: set by user
1748      * - decoding: set by lavc
1749      */
1750      int profile;
1751 #define FF_PROFILE_UNKNOWN -99
1752
1753     /**
1754      * level
1755      * - encoding: set by user
1756      * - decoding: set by lavc
1757      */
1758      int level;
1759 #define FF_LEVEL_UNKNOWN -99
1760
1761     /**
1762      * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1763      * - encoding: unused
1764      * - decoding: set by user
1765      */
1766      int lowres;
1767
1768     /**
1769      * bitsream width / height. may be different from width/height if lowres
1770      * or other things are used
1771      * - encoding: unused
1772      * - decoding: set by user before init if known, codec should override / dynamically change if needed
1773      */
1774     int coded_width, coded_height;
1775
1776     /**
1777      * frame skip threshold
1778      * - encoding: set by user
1779      * - decoding: unused
1780      */
1781     int frame_skip_threshold;
1782
1783     /**
1784      * frame skip factor
1785      * - encoding: set by user
1786      * - decoding: unused
1787      */
1788     int frame_skip_factor;
1789
1790     /**
1791      * frame skip exponent
1792      * - encoding: set by user
1793      * - decoding: unused
1794      */
1795     int frame_skip_exp;
1796
1797     /**
1798      * frame skip comparission function
1799      * - encoding: set by user.
1800      * - decoding: unused
1801      */
1802     int frame_skip_cmp;
1803
1804     /**
1805      * border processing masking. raises the quantizer for mbs on the borders
1806      * of the picture.
1807      * - encoding: set by user
1808      * - decoding: unused
1809      */
1810     float border_masking;
1811
1812     /**
1813      * minimum MB lagrange multipler.
1814      * - encoding: set by user.
1815      * - decoding: unused
1816      */
1817     int mb_lmin;
1818
1819     /**
1820      * maximum MB lagrange multipler.
1821      * - encoding: set by user.
1822      * - decoding: unused
1823      */
1824     int mb_lmax;
1825
1826     /**
1827      *
1828      * - encoding: set by user.
1829      * - decoding: unused
1830      */
1831     int me_penalty_compensation;
1832
1833     /**
1834      *
1835      * - encoding: unused
1836      * - decoding: set by user.
1837      */
1838     enum AVDiscard skip_loop_filter;
1839
1840     /**
1841      *
1842      * - encoding: unused
1843      * - decoding: set by user.
1844      */
1845     enum AVDiscard skip_idct;
1846
1847     /**
1848      *
1849      * - encoding: unused
1850      * - decoding: set by user.
1851      */
1852     enum AVDiscard skip_frame;
1853
1854     /**
1855      *
1856      * - encoding: set by user.
1857      * - decoding: unused
1858      */
1859     int bidir_refine;
1860
1861     /**
1862      *
1863      * - encoding: set by user.
1864      * - decoding: unused
1865      */
1866     int brd_scale;
1867
1868     /**
1869      * constant rate factor - quality-based VBR - values ~correspond to qps
1870      * - encoding: set by user.
1871      * - decoding: unused
1872      */
1873     int crf;
1874
1875     /**
1876      * constant quantization parameter rate control method
1877      * - encoding: set by user.
1878      * - decoding: unused
1879      */
1880     int cqp;
1881
1882     /**
1883      * minimum gop size
1884      * - encoding: set by user.
1885      * - decoding: unused
1886      */
1887     int keyint_min;
1888
1889     /**
1890      * number of reference frames
1891      * - encoding: set by user.
1892      * - decoding: unused
1893      */
1894     int refs;
1895
1896     /**
1897      * chroma qp offset from luma
1898      * - encoding: set by user.
1899      * - decoding: unused
1900      */
1901     int chromaoffset;
1902
1903     /**
1904      * influences how often b-frames are used
1905      * - encoding: set by user.
1906      * - decoding: unused
1907      */
1908     int bframebias;
1909
1910     /**
1911      * trellis RD quantization
1912      * - encoding: set by user.
1913      * - decoding: unused
1914      */
1915     int trellis;
1916
1917     /**
1918      * reduce fluctuations in qp (before curve compression)
1919      * - encoding: set by user.
1920      * - decoding: unused
1921      */
1922     float complexityblur;
1923
1924     /**
1925      * in-loop deblocking filter alphac0 parameter
1926      * alpha is in the range -6...6
1927      * - encoding: set by user.
1928      * - decoding: unused
1929      */
1930     int deblockalpha;
1931
1932     /**
1933      * in-loop deblocking filter beta parameter
1934      * beta is in the range -6...6
1935      * - encoding: set by user.
1936      * - decoding: unused
1937      */
1938     int deblockbeta;
1939
1940     /**
1941      * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1942      * - encoding: set by user.
1943      * - decoding: unused
1944      */
1945     int partitions;
1946 #define X264_PART_I4X4 0x001  /* Analyse i4x4 */
1947 #define X264_PART_I8X8 0x002  /* Analyse i8x8 (requires 8x8 transform) */
1948 #define X264_PART_P8X8 0x010  /* Analyse p16x8, p8x16 and p8x8 */
1949 #define X264_PART_P4X4 0x020  /* Analyse p8x4, p4x8, p4x4 */
1950 #define X264_PART_B8X8 0x100  /* Analyse b16x8, b8x16 and b8x8 */
1951
1952     /**
1953      * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1954      * - encoding: set by user.
1955      * - decoding: unused
1956      */
1957     int directpred;
1958
1959     /**
1960      * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
1961      * - encoding: set by user.
1962      * - decoding: unused
1963      */
1964     int cutoff;
1965
1966     /**
1967      * multiplied by qscale for each frame and added to scene_change_score
1968      * - encoding: set by user.
1969      * - decoding: unused
1970      */
1971     int scenechange_factor;
1972
1973     /**
1974      *
1975      * note: value depends upon the compare functin used for fullpel ME
1976      * - encoding: set by user.
1977      * - decoding: unused
1978      */
1979     int mv0_threshold;
1980
1981     /**
1982      * adjusts sensitivity of b_frame_strategy 1
1983      * - encoding: set by user.
1984      * - decoding: unused
1985      */
1986     int b_sensitivity;
1987 } AVCodecContext;
1988
1989 /**
1990  * AVCodec.
1991  */
1992 typedef struct AVCodec {
1993     const char *name;
1994     enum CodecType type;
1995     enum CodecID id;
1996     int priv_data_size;
1997     int (*init)(AVCodecContext *);
1998     int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1999     int (*close)(AVCodecContext *);
2000     int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2001                   uint8_t *buf, int buf_size);
2002     int capabilities;
2003 #if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
2004     void *dummy; // FIXME remove next time we break binary compatibility
2005 #endif
2006     struct AVCodec *next;
2007     void (*flush)(AVCodecContext *);
2008     const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2009     const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2010 } AVCodec;
2011
2012 /**
2013  * four components are given, that's all.
2014  * the last component is alpha
2015  */
2016 typedef struct AVPicture {
2017     uint8_t *data[4];
2018     int linesize[4];       ///< number of bytes per line
2019 } AVPicture;
2020
2021 /**
2022  * AVPaletteControl
2023  * This structure defines a method for communicating palette changes
2024  * between and demuxer and a decoder.
2025  */
2026 #define AVPALETTE_SIZE 1024
2027 #define AVPALETTE_COUNT 256
2028 typedef struct AVPaletteControl {
2029
2030     /* demuxer sets this to 1 to indicate the palette has changed;
2031      * decoder resets to 0 */
2032     int palette_changed;
2033
2034     /* 4-byte ARGB palette entries, stored in native byte order; note that
2035      * the individual palette components should be on a 8-bit scale; if
2036      * the palette data comes from a IBM VGA native format, the component
2037      * data is probably 6 bits in size and needs to be scaled */
2038     unsigned int palette[AVPALETTE_COUNT];
2039
2040 } AVPaletteControl;
2041
2042 typedef struct AVSubtitleRect {
2043     uint16_t x;
2044     uint16_t y;
2045     uint16_t w;
2046     uint16_t h;
2047     uint16_t nb_colors;
2048     int linesize;
2049     uint32_t *rgba_palette;
2050     uint8_t *bitmap;
2051 } AVSubtitleRect;
2052
2053 typedef struct AVSubtitle {
2054     uint16_t format; /* 0 = graphics */
2055     uint32_t start_display_time; /* relative to packet pts, in ms */
2056     uint32_t end_display_time; /* relative to packet pts, in ms */
2057     uint32_t num_rects;
2058     AVSubtitleRect *rects;
2059 } AVSubtitle;
2060
2061 extern AVCodec ac3_encoder;
2062 extern AVCodec mp2_encoder;
2063 extern AVCodec mp3lame_encoder;
2064 extern AVCodec oggvorbis_encoder;
2065 extern AVCodec oggtheora_encoder;
2066 extern AVCodec faac_encoder;
2067 extern AVCodec xvid_encoder;
2068 extern AVCodec mpeg1video_encoder;
2069 extern AVCodec mpeg2video_encoder;
2070 extern AVCodec h261_encoder;
2071 extern AVCodec h263_encoder;
2072 extern AVCodec h263p_encoder;
2073 extern AVCodec flv_encoder;
2074 extern AVCodec rv10_encoder;
2075 extern AVCodec rv20_encoder;
2076 extern AVCodec dvvideo_encoder;
2077 extern AVCodec mjpeg_encoder;
2078 extern AVCodec ljpeg_encoder;
2079 extern AVCodec jpegls_encoder;
2080 extern AVCodec png_encoder;
2081 extern AVCodec ppm_encoder;
2082 extern AVCodec pgm_encoder;
2083 extern AVCodec pgmyuv_encoder;
2084 extern AVCodec pbm_encoder;
2085 extern AVCodec pam_encoder;
2086 extern AVCodec mpeg4_encoder;
2087 extern AVCodec msmpeg4v1_encoder;
2088 extern AVCodec msmpeg4v2_encoder;
2089 extern AVCodec msmpeg4v3_encoder;
2090 extern AVCodec wmv1_encoder;
2091 extern AVCodec wmv2_encoder;
2092 extern AVCodec huffyuv_encoder;
2093 extern AVCodec ffvhuff_encoder;
2094 extern AVCodec h264_encoder;
2095 extern AVCodec asv1_encoder;
2096 extern AVCodec asv2_encoder;
2097 extern AVCodec vcr1_encoder;
2098 extern AVCodec ffv1_encoder;
2099 extern AVCodec snow_encoder;
2100 extern AVCodec mdec_encoder;
2101 extern AVCodec zlib_encoder;
2102 extern AVCodec sonic_encoder;
2103 extern AVCodec sonic_ls_encoder;
2104 extern AVCodec svq1_encoder;
2105 extern AVCodec x264_encoder;
2106
2107 extern AVCodec h263_decoder;
2108 extern AVCodec h261_decoder;
2109 extern AVCodec mpeg4_decoder;
2110 extern AVCodec msmpeg4v1_decoder;
2111 extern AVCodec msmpeg4v2_decoder;
2112 extern AVCodec msmpeg4v3_decoder;
2113 extern AVCodec wmv1_decoder;
2114 extern AVCodec wmv2_decoder;
2115 extern AVCodec vc9_decoder;
2116 extern AVCodec wmv3_decoder;
2117 extern AVCodec mpeg1video_decoder;
2118 extern AVCodec mpeg2video_decoder;
2119 extern AVCodec mpegvideo_decoder;
2120 extern AVCodec mpeg_xvmc_decoder;
2121 extern AVCodec h263i_decoder;
2122 extern AVCodec flv_decoder;
2123 extern AVCodec rv10_decoder;
2124 extern AVCodec rv20_decoder;
2125 extern AVCodec rv30_decoder;
2126 extern AVCodec rv40_decoder;
2127 extern AVCodec svq1_decoder;
2128 extern AVCodec svq3_decoder;
2129 extern AVCodec dvvideo_decoder;
2130 extern AVCodec wmav1_decoder;
2131 extern AVCodec wmav2_decoder;
2132 extern AVCodec mjpeg_decoder;
2133 extern AVCodec mjpegb_decoder;
2134 extern AVCodec sp5x_decoder;
2135 extern AVCodec png_decoder;
2136 extern AVCodec mp2_decoder;
2137 extern AVCodec mp3_decoder;
2138 extern AVCodec mp3adu_decoder;
2139 extern AVCodec mp3on4_decoder;
2140 extern AVCodec qdm2_decoder;
2141 extern AVCodec cook_decoder;
2142 extern AVCodec truespeech_decoder;
2143 extern AVCodec tta_decoder;
2144 extern AVCodec mace3_decoder;
2145 extern AVCodec mace6_decoder;
2146 extern AVCodec huffyuv_decoder;
2147 extern AVCodec ffvhuff_decoder;
2148 extern AVCodec oggvorbis_decoder;
2149 extern AVCodec oggtheora_decoder;
2150 extern AVCodec cyuv_decoder;
2151 extern AVCodec h264_decoder;
2152 extern AVCodec indeo3_decoder;
2153 extern AVCodec vp3_decoder;
2154 extern AVCodec theora_decoder;
2155 extern AVCodec amr_nb_decoder;
2156 extern AVCodec amr_nb_encoder;
2157 extern AVCodec amr_wb_encoder;
2158 extern AVCodec amr_wb_decoder;
2159 extern AVCodec aac_decoder;
2160 extern AVCodec mpeg4aac_decoder;
2161 extern AVCodec asv1_decoder;
2162 extern AVCodec asv2_decoder;
2163 extern AVCodec vcr1_decoder;
2164 extern AVCodec cljr_decoder;
2165 extern AVCodec ffv1_decoder;
2166 extern AVCodec snow_decoder;
2167 extern AVCodec fourxm_decoder;
2168 extern AVCodec mdec_decoder;
2169 extern AVCodec roq_decoder;
2170 extern AVCodec interplay_video_decoder;
2171 extern AVCodec xan_wc3_decoder;
2172 extern AVCodec rpza_decoder;
2173 extern AVCodec cinepak_decoder;
2174 extern AVCodec msrle_decoder;
2175 extern AVCodec msvideo1_decoder;
2176 extern AVCodec vqa_decoder;
2177 extern AVCodec idcin_decoder;
2178 extern AVCodec eightbps_decoder;
2179 extern AVCodec smc_decoder;
2180 extern AVCodec flic_decoder;
2181 extern AVCodec vmdvideo_decoder;
2182 extern AVCodec vmdaudio_decoder;
2183 extern AVCodec truemotion1_decoder;
2184 extern AVCodec truemotion2_decoder;
2185 extern AVCodec mszh_decoder;
2186 extern AVCodec zlib_decoder;
2187 extern AVCodec ra_144_decoder;
2188 extern AVCodec ra_288_decoder;
2189 extern AVCodec roq_dpcm_decoder;
2190 extern AVCodec interplay_dpcm_decoder;
2191 extern AVCodec xan_dpcm_decoder;
2192 extern AVCodec sol_dpcm_decoder;
2193 extern AVCodec sonic_decoder;
2194 extern AVCodec qtrle_decoder;
2195 extern AVCodec flac_decoder;
2196 extern AVCodec tscc_decoder;
2197 extern AVCodec cscd_decoder;
2198 extern AVCodec nuv_decoder;
2199 extern AVCodec ulti_decoder;
2200 extern AVCodec qdraw_decoder;
2201 extern AVCodec xl_decoder;
2202 extern AVCodec qpeg_decoder;
2203 extern AVCodec shorten_decoder;
2204 extern AVCodec loco_decoder;
2205 extern AVCodec wnv1_decoder;
2206 extern AVCodec aasc_decoder;
2207 extern AVCodec alac_decoder;
2208 extern AVCodec ws_snd1_decoder;
2209 extern AVCodec indeo2_decoder;
2210 extern AVCodec vorbis_decoder;
2211 extern AVCodec fraps_decoder;
2212 extern AVCodec libgsm_encoder;
2213 extern AVCodec libgsm_decoder;
2214 extern AVCodec bmp_decoder;
2215 extern AVCodec mmvideo_decoder;
2216 extern AVCodec zmbv_decoder;
2217 extern AVCodec avs_decoder;
2218 extern AVCodec smacker_decoder;
2219 extern AVCodec smackaud_decoder;
2220 extern AVCodec kmvc_decoder;
2221 extern AVCodec flashsv_decoder;
2222
2223 /* pcm codecs */
2224 #define PCM_CODEC(id, name) \
2225 extern AVCodec name ## _decoder; \
2226 extern AVCodec name ## _encoder
2227
2228 PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2229 PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2230 PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2231 PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2232 PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2233 PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2234 PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2235 PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2236 PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2237 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2238 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2239 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2240 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2241 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2242 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2243 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2244 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2245
2246 /* adpcm codecs */
2247
2248 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2249 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2250 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2251 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2252 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2253 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2254 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2255 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2256 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2257 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2258 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2259 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2260 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2261 PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2262 PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2263 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2264 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2265 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2266
2267 #undef PCM_CODEC
2268
2269 /* dummy raw video codec */
2270 extern AVCodec rawvideo_encoder;
2271 extern AVCodec rawvideo_decoder;
2272
2273 /* the following codecs use external GPL libs */
2274 extern AVCodec ac3_decoder;
2275 extern AVCodec dts_decoder;
2276
2277 /* subtitles */
2278 extern AVCodec dvdsub_encoder;
2279 extern AVCodec dvdsub_decoder;
2280 extern AVCodec dvbsub_encoder;
2281 extern AVCodec dvbsub_decoder;
2282
2283 /* resample.c */
2284
2285 struct ReSampleContext;
2286 struct AVResampleContext;
2287
2288 typedef struct ReSampleContext ReSampleContext;
2289
2290 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2291                                      int output_rate, int input_rate);
2292 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2293 void audio_resample_close(ReSampleContext *s);
2294
2295 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2296 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2297 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2298 void av_resample_close(struct AVResampleContext *c);
2299
2300 /* YUV420 format is assumed ! */
2301
2302 struct ImgReSampleContext;
2303
2304 typedef struct ImgReSampleContext ImgReSampleContext;
2305
2306 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2307                                       int input_width, int input_height);
2308
2309 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2310                                       int iwidth, int iheight,
2311                                       int topBand, int bottomBand,
2312                                       int leftBand, int rightBand,
2313                                       int padtop, int padbottom,
2314                                       int padleft, int padright);
2315
2316
2317 void img_resample(ImgReSampleContext *s,
2318                   AVPicture *output, const AVPicture *input);
2319
2320 void img_resample_close(ImgReSampleContext *s);
2321
2322 /**
2323  * Allocate memory for a picture.  Call avpicture_free to free it.
2324  *
2325  * @param picture the picture to be filled in.
2326  * @param pix_fmt the format of the picture.
2327  * @param width the width of the picture.
2328  * @param height the height of the picture.
2329  * @return 0 if successful, -1 if not.
2330  */
2331 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2332
2333 /* Free a picture previously allocated by avpicture_alloc. */
2334 void avpicture_free(AVPicture *picture);
2335
2336 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2337                    int pix_fmt, int width, int height);
2338 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2339                      unsigned char *dest, int dest_size);
2340 int avpicture_get_size(int pix_fmt, int width, int height);
2341 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2342 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2343 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2344 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2345 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2346
2347 #define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
2348 #define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
2349 #define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
2350 #define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
2351 #define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
2352 #define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2353
2354 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2355                              int has_alpha);
2356 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2357                               int has_alpha, int *loss_ptr);
2358
2359 #define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2360 #define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2361 int img_get_alpha_info(const AVPicture *src,
2362                        int pix_fmt, int width, int height);
2363
2364 /* convert among pixel formats */
2365 int img_convert(AVPicture *dst, int dst_pix_fmt,
2366                 const AVPicture *src, int pix_fmt,
2367                 int width, int height);
2368
2369 /* deinterlace a picture */
2370 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2371                           int pix_fmt, int width, int height);
2372
2373 /* external high level API */
2374
2375 extern AVCodec *first_avcodec;
2376
2377 /* returns LIBAVCODEC_VERSION_INT constant */
2378 unsigned avcodec_version(void);
2379 /* returns LIBAVCODEC_BUILD constant */
2380 unsigned avcodec_build(void);
2381 void avcodec_init(void);
2382
2383 void register_avcodec(AVCodec *format);
2384 AVCodec *avcodec_find_encoder(enum CodecID id);
2385 AVCodec *avcodec_find_encoder_by_name(const char *name);
2386 AVCodec *avcodec_find_decoder(enum CodecID id);
2387 AVCodec *avcodec_find_decoder_by_name(const char *name);
2388 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2389
2390 void avcodec_get_context_defaults(AVCodecContext *s);
2391 AVCodecContext *avcodec_alloc_context(void);
2392 void avcodec_get_frame_defaults(AVFrame *pic);
2393 AVFrame *avcodec_alloc_frame(void);
2394
2395 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2396 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2397 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2398 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2399 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2400 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2401
2402 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2403 void avcodec_thread_free(AVCodecContext *s);
2404 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2405 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2406 //FIXME func typedef
2407
2408 /**
2409  * opens / inits the AVCodecContext.
2410  * not thread save!
2411  */
2412 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2413
2414 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2415                          int *frame_size_ptr,
2416                          uint8_t *buf, int buf_size);
2417 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2418                          int *got_picture_ptr,
2419                          uint8_t *buf, int buf_size);
2420 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2421                             int *got_sub_ptr,
2422                             const uint8_t *buf, int buf_size);
2423 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2424                         int *data_size_ptr,
2425                         uint8_t *buf, int buf_size);
2426 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2427                          const short *samples);
2428 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2429                          const AVFrame *pict);
2430 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2431                             const AVSubtitle *sub);
2432
2433 int avcodec_close(AVCodecContext *avctx);
2434
2435 void avcodec_register_all(void);
2436
2437 void avcodec_flush_buffers(AVCodecContext *avctx);
2438
2439 void avcodec_default_free_buffers(AVCodecContext *s);
2440
2441 /* misc usefull functions */
2442
2443 /**
2444  * returns a single letter to describe the picture type
2445  */
2446 char av_get_pict_type_char(int pict_type);
2447
2448
2449 /* frame parsing */
2450 typedef struct AVCodecParserContext {
2451     void *priv_data;
2452     struct AVCodecParser *parser;
2453     int64_t frame_offset; /* offset of the current frame */
2454     int64_t cur_offset; /* current offset
2455                            (incremented by each av_parser_parse()) */
2456     int64_t last_frame_offset; /* offset of the last frame */
2457     /* video info */
2458     int pict_type; /* XXX: put it back in AVCodecContext */
2459     int repeat_pict; /* XXX: put it back in AVCodecContext */
2460     int64_t pts;     /* pts of the current frame */
2461     int64_t dts;     /* dts of the current frame */
2462
2463     /* private data */
2464     int64_t last_pts;
2465     int64_t last_dts;
2466     int fetch_timestamp;
2467
2468 #define AV_PARSER_PTS_NB 4
2469     int cur_frame_start_index;
2470     int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2471     int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2472     int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2473
2474     int flags;
2475 #define PARSER_FLAG_COMPLETE_FRAMES           0x0001
2476 } AVCodecParserContext;
2477
2478 typedef struct AVCodecParser {
2479     int codec_ids[5]; /* several codec IDs are permitted */
2480     int priv_data_size;
2481     int (*parser_init)(AVCodecParserContext *s);
2482     int (*parser_parse)(AVCodecParserContext *s,
2483                         AVCodecContext *avctx,
2484                         uint8_t **poutbuf, int *poutbuf_size,
2485                         const uint8_t *buf, int buf_size);
2486     void (*parser_close)(AVCodecParserContext *s);
2487     int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2488     struct AVCodecParser *next;
2489 } AVCodecParser;
2490
2491 extern AVCodecParser *av_first_parser;
2492
2493 void av_register_codec_parser(AVCodecParser *parser);
2494 AVCodecParserContext *av_parser_init(int codec_id);
2495 int av_parser_parse(AVCodecParserContext *s,
2496                     AVCodecContext *avctx,
2497                     uint8_t **poutbuf, int *poutbuf_size,
2498                     const uint8_t *buf, int buf_size,
2499                     int64_t pts, int64_t dts);
2500 int av_parser_change(AVCodecParserContext *s,
2501                      AVCodecContext *avctx,
2502                      uint8_t **poutbuf, int *poutbuf_size,
2503                      const uint8_t *buf, int buf_size, int keyframe);
2504 void av_parser_close(AVCodecParserContext *s);
2505
2506 extern AVCodecParser mpegvideo_parser;
2507 extern AVCodecParser mpeg4video_parser;
2508 extern AVCodecParser h261_parser;
2509 extern AVCodecParser h263_parser;
2510 extern AVCodecParser h264_parser;
2511 extern AVCodecParser mjpeg_parser;
2512 extern AVCodecParser pnm_parser;
2513 extern AVCodecParser mpegaudio_parser;
2514 extern AVCodecParser ac3_parser;
2515 extern AVCodecParser dvdsub_parser;
2516 extern AVCodecParser dvbsub_parser;
2517 extern AVCodecParser aac_parser;
2518
2519 /* memory */
2520 void *av_malloc(unsigned int size);
2521 void *av_mallocz(unsigned int size);
2522 void *av_realloc(void *ptr, unsigned int size);
2523 void av_free(void *ptr);
2524 char *av_strdup(const char *s);
2525 void av_freep(void *ptr);
2526 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2527 /* for static data only */
2528 /* call av_free_static to release all staticaly allocated tables */
2529 void av_free_static(void);
2530 void *av_mallocz_static(unsigned int size);
2531 void *av_realloc_static(void *ptr, unsigned int size);
2532
2533 /* add by bero : in adx.c */
2534 int is_adx(const unsigned char *buf,size_t bufsize);
2535
2536 void img_copy(AVPicture *dst, const AVPicture *src,
2537               int pix_fmt, int width, int height);
2538
2539 int img_crop(AVPicture *dst, const AVPicture *src,
2540              int pix_fmt, int top_band, int left_band);
2541
2542 int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
2543             int padtop, int padbottom, int padleft, int padright, int *color);
2544
2545 /* av_log API */
2546
2547 #include <stdarg.h>
2548
2549 #define AV_LOG_QUIET -1
2550 #define AV_LOG_ERROR 0
2551 #define AV_LOG_INFO 1
2552 #define AV_LOG_DEBUG 2
2553
2554 #ifdef __GNUC__
2555 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2556 #else
2557 extern void av_log(void*, int level, const char *fmt, ...);
2558 #endif
2559
2560 extern void av_vlog(void*, int level, const char *fmt, va_list);
2561 extern int av_log_get_level(void);
2562 extern void av_log_set_level(int);
2563 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2564
2565 /* endian macros */
2566 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2567 #define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2568 #define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2569                    (((uint8_t*)(x))[1] << 16) | \
2570                    (((uint8_t*)(x))[2] << 8) | \
2571                     ((uint8_t*)(x))[3])
2572 #define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2573 #define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2574                    (((uint8_t*)(x))[2] << 16) | \
2575                    (((uint8_t*)(x))[1] << 8) | \
2576                     ((uint8_t*)(x))[0])
2577 #endif
2578
2579 extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2580
2581 #ifdef __cplusplus
2582 }
2583 #endif
2584
2585 #endif /* AVCODEC_H */