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 "common.h"
  15 #include "rational.h"
  16 #include <sys/types.h> /* size_t */
  17
  18 #define FFMPEG_VERSION_INT     0x000408
  19 #define FFMPEG_VERSION         "0.4.8"
  20 #define LIBAVCODEC_BUILD       4693
  21
  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)
  28
  29 enum CodecID {
  30     CODEC_ID_NONE,
  31     CODEC_ID_MPEG1VIDEO,
  32     CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
  33     CODEC_ID_MPEG2VIDEO_XVMC,
  34     CODEC_ID_H263,
  35     CODEC_ID_RV10,
  36     CODEC_ID_RV20,
  37     CODEC_ID_MP2,
  38     CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
  39     CODEC_ID_VORBIS,
  40     CODEC_ID_AC3,
  41     CODEC_ID_MJPEG,
  42     CODEC_ID_MJPEGB,
  43     CODEC_ID_LJPEG,
  44     CODEC_ID_SP5X,
  45     CODEC_ID_MPEG4,
  46     CODEC_ID_RAWVIDEO,
  47     CODEC_ID_MSMPEG4V1,
  48     CODEC_ID_MSMPEG4V2,
  49     CODEC_ID_MSMPEG4V3,
  50     CODEC_ID_WMV1,
  51     CODEC_ID_WMV2,
  52     CODEC_ID_H263P,
  53     CODEC_ID_H263I,
  54     CODEC_ID_FLV1,
  55     CODEC_ID_SVQ1,
  56     CODEC_ID_SVQ3,
  57     CODEC_ID_DVVIDEO,
  58     CODEC_ID_DVAUDIO,
  59     CODEC_ID_WMAV1,
  60     CODEC_ID_WMAV2,
  61     CODEC_ID_MACE3,
  62     CODEC_ID_MACE6,
  63     CODEC_ID_HUFFYUV,
  64     CODEC_ID_CYUV,
  65     CODEC_ID_H264,
  66     CODEC_ID_INDEO3,
  67     CODEC_ID_VP3,
  68     CODEC_ID_THEORA,
  69     CODEC_ID_AAC,
  70     CODEC_ID_MPEG4AAC,
  71     CODEC_ID_ASV1,
  72     CODEC_ID_ASV2,
  73     CODEC_ID_FFV1,
  74     CODEC_ID_4XM,
  75     CODEC_ID_VCR1,
  76     CODEC_ID_CLJR,
  77     CODEC_ID_MDEC,
  78     CODEC_ID_ROQ,
  79     CODEC_ID_INTERPLAY_VIDEO,
  80     CODEC_ID_XAN_WC3,
  81     CODEC_ID_XAN_WC4,
  82     CODEC_ID_RPZA,
  83     CODEC_ID_CINEPAK,
  84     CODEC_ID_WS_VQA,
  85     CODEC_ID_MSRLE,
  86     CODEC_ID_MSVIDEO1,
  87     CODEC_ID_IDCIN,
  88     CODEC_ID_8BPS,
  89     CODEC_ID_SMC,
  90     CODEC_ID_FLIC,
  91
  92     /* various pcm "codecs" */
  93     CODEC_ID_PCM_S16LE,
  94     CODEC_ID_PCM_S16BE,
  95     CODEC_ID_PCM_U16LE,
  96     CODEC_ID_PCM_U16BE,
  97     CODEC_ID_PCM_S8,
  98     CODEC_ID_PCM_U8,
  99     CODEC_ID_PCM_MULAW,
 100     CODEC_ID_PCM_ALAW,
 101
 102     /* various adpcm codecs */
 103     CODEC_ID_ADPCM_IMA_QT,
 104     CODEC_ID_ADPCM_IMA_WAV,
 105     CODEC_ID_ADPCM_IMA_DK3,
 106     CODEC_ID_ADPCM_IMA_DK4,
 107     CODEC_ID_ADPCM_IMA_WS,
 108     CODEC_ID_ADPCM_MS,
 109     CODEC_ID_ADPCM_4XM,
 110     CODEC_ID_ADPCM_XA,
 111     CODEC_ID_ADPCM_ADX,
 112
 113         /* AMR */
 114     CODEC_ID_AMR_NB,
 115     CODEC_ID_AMR_WB,
 116
 117     /* RealAudio codecs*/
 118     CODEC_ID_RA_144,
 119     CODEC_ID_RA_288,
 120
 121     /* various DPCM codecs */
 122     CODEC_ID_ROQ_DPCM,
 123     CODEC_ID_INTERPLAY_DPCM,
 124     CODEC_ID_XAN_DPCM,
 125
 126     CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
 127                          stream (only used by libavformat) */
 128 };
 129
 130 /* CODEC_ID_MP3LAME is absolete */
 131 #define CODEC_ID_MP3LAME CODEC_ID_MP3
 132
 133 enum CodecType {
 134     CODEC_TYPE_UNKNOWN = -1,
 135     CODEC_TYPE_VIDEO,
 136     CODEC_TYPE_AUDIO,
 137     CODEC_TYPE_DATA,
 138 };
 139
 140 /**
 141  * Pixel format. Notes:
 142  *
 143  * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
 144  * color is put together as:
 145  *  (A << 24) | (R << 16) | (G << 8) | B
 146  * This is stored as BGRA on little endian CPU architectures and ARGB on
 147  * big endian CPUs.
 148  *
 149  * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
 150  * image data is stored in AVFrame.data[0]. The palette is transported in
 151  * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
 152  * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
 153  * also endian-specific). Note also that the individual RGB palette
 154  * components stored in AVFrame.data[1] should be in the range 0..255.
 155  * This is important as many custom PAL8 video codecs that were designed
 156  * to run on the IBM VGA graphics adapter use 6-bit palette components.
 157  */
 158 enum PixelFormat {
 159     PIX_FMT_YUV420P,   ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
 160     PIX_FMT_YUV422,
 161     PIX_FMT_RGB24,     ///< Packed pixel, 3 bytes per pixel, RGBRGB...
 162     PIX_FMT_BGR24,     ///< Packed pixel, 3 bytes per pixel, BGRBGR...
 163     PIX_FMT_YUV422P,   ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
 164     PIX_FMT_YUV444P,   ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
 165     PIX_FMT_RGBA32,    ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
 166     PIX_FMT_YUV410P,   ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
 167     PIX_FMT_YUV411P,   ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
 168     PIX_FMT_RGB565,    ///< always stored in cpu endianness
 169     PIX_FMT_RGB555,    ///< always stored in cpu endianness, most significant bit to 1
 170     PIX_FMT_GRAY8,
 171     PIX_FMT_MONOWHITE, ///< 0 is white
 172     PIX_FMT_MONOBLACK, ///< 0 is black
 173     PIX_FMT_PAL8,      ///< 8 bit with RGBA palette
 174     PIX_FMT_YUVJ420P,  ///< Planar YUV 4:2:0 full scale (jpeg)
 175     PIX_FMT_YUVJ422P,  ///< Planar YUV 4:2:2 full scale (jpeg)
 176     PIX_FMT_YUVJ444P,  ///< Planar YUV 4:4:4 full scale (jpeg)
 177     PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
 178     PIX_FMT_XVMC_MPEG2_IDCT,
 179     PIX_FMT_NB,
 180 };
 181
 182 /* currently unused, may be used if 24/32 bits samples ever supported */
 183 enum SampleFormat {
 184     SAMPLE_FMT_S16 = 0,         ///< signed 16 bits
 185 };
 186
 187 /* in bytes */
 188 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
 189
 190 /**
 191  * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
 192  * this is mainly needed because some optimized bitstream readers read
 193  * 32 or 64 bit at once and could read over the end<br>
 194  * Note, if the first 23 bits of the additional bytes are not 0 then damaged
 195  * MPEG bitstreams could cause overread and segfault
 196  */
 197 #define FF_INPUT_BUFFER_PADDING_SIZE 8
 198
 199 /* motion estimation type, EPZS by default */
 200 enum Motion_Est_ID {
 201     ME_ZERO = 1,
 202     ME_FULL,
 203     ME_LOG,
 204     ME_PHODS,
 205     ME_EPZS,
 206     ME_X1
 207 };
 208
 209 typedef struct RcOverride{
 210     int start_frame;
 211     int end_frame;
 212     int qscale; // if this is 0 then quality_factor will be used instead
 213     float quality_factor;
 214 } RcOverride;
 215
 216 /* only for ME compatiblity with old apps */
 217 extern int motion_estimation_method;
 218
 219 /* ME algos sorted by quality */
 220 //FIXME remove IMHO
 221 static const __attribute__((unused)) int Motion_Est_QTab[] =
 222  { ME_ZERO, ME_PHODS, ME_LOG, ME_X1, ME_EPZS, ME_FULL };
 223
 224
 225 #define FF_MAX_B_FRAMES 8
 226
 227 /* encoding support
 228    these flags can be passed in AVCodecContext.flags before initing
 229    Note: note not everything is supported yet
 230 */
 231
 232 #define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale
 233 #define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / Advanced prediction for H263
 234 #define CODEC_FLAG_QPEL   0x0010  ///< use qpel MC
 235 #define CODEC_FLAG_GMC    0x0020  ///< use GMC
 236 #define CODEC_FLAG_MV0    0x0040  ///< always try a MB with MV=<0,0>
 237 #define CODEC_FLAG_PART   0x0080  ///< use data partitioning
 238 /* parent program gurantees that the input for b-frame containing streams is not written to
 239    for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
 240 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
 241 #define CODEC_FLAG_PASS1 0x0200   ///< use internal 2pass ratecontrol in first  pass mode
 242 #define CODEC_FLAG_PASS2 0x0400   ///< use internal 2pass ratecontrol in second pass mode
 243 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
 244 #define CODEC_FLAG_GRAY  0x2000   ///< only decode/encode grayscale
 245 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
 246 #define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding
 247 #define CODEC_FLAG_TRUNCATED  0x00010000 /** input bitstream might be truncated at a random location instead
 248                                             of only at frame boundaries */
 249 #define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< normalize adaptive quantization
 250 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
 251 #define CODEC_FLAG_LOW_DELAY      0x00080000 ///< force low delay
 252 #define CODEC_FLAG_ALT_SCAN       0x00100000 ///< use alternate scan
 253 #define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< use trellis quantization
 254 #define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< place global headers in extradata instead of every keyframe
 255 #define CODEC_FLAG_BITEXACT       0x00800000 ///< use only bitexact stuff (except (i)dct)
 256 /* Fx : Flag for h263+ extra options */
 257 #define CODEC_FLAG_H263P_AIC      0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
 258 #define CODEC_FLAG_AC_PRED        0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
 259 #define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector
 260 #define CODEC_FLAG_CBP_RD         0x04000000 ///< use rate distortion optimization for cbp
 261 #define CODEC_FLAG_QP_RD          0x08000000 ///< use rate distortion optimization for qp selectioon
 262 #define CODEC_FLAG_H263P_AIV      0x00000008 ///< H263 Alternative inter vlc
 263 #define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
 264 #define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
 265 /* For advanced prediction mode, we reuse the 4MV flag */
 266 /* Unsupported options :
 267  *              Syntax Arithmetic coding (SAC)
 268  *              Deblocking filter internal loop
 269  *              Slice structured
 270  *              Reference Picture Selection
 271  *              Independant Segment Decoding
 272  *              Modified Quantization */
 273 /* /Fx */
 274 /* codec capabilities */
 275
 276 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
 277 /**
 278  * Codec uses get_buffer() for allocating buffers.
 279  * direct rendering method 1
 280  */
 281 #define CODEC_CAP_DR1             0x0002
 282 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
 283    used */
 284 #define CODEC_CAP_PARSE_ONLY      0x0004
 285 #define CODEC_CAP_TRUNCATED       0x0008
 286
 287 /**
 288  * Pan Scan area.
 289  * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
 290  */
 291 typedef struct AVPanScan{
 292     /**
 293      * id.
 294      * - encoding: set by user.
 295      * - decoding: set by lavc
 296      */
 297     int id;
 298
 299     /**
 300      * width and height in 1/16 pel
 301      * - encoding: set by user.
 302      * - decoding: set by lavc
 303      */
 304     int width;
 305     int height;
 306
 307     /**
 308      * position of the top left corner in 1/16 pel for up to 3 fields/frames.
 309      * - encoding: set by user.
 310      * - decoding: set by lavc
 311      */
 312     int16_t position[3][2];
 313 }AVPanScan;
 314
 315 #define FF_COMMON_FRAME \
 316     /**\
 317      * pointer to the picture planes.\
 318      * this might be different from the first allocated byte\
 319      * - encoding: \
 320      * - decoding: \
 321      */\
 322     uint8_t *data[4];\
 323     int linesize[4];\
 324     /**\
 325      * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
 326      * this isnt used by lavc unless the default get/release_buffer() is used\
 327      * - encoding: \
 328      * - decoding: \
 329      */\
 330     uint8_t *base[4];\
 331     /**\
 332      * 1 -> keyframe, 0-> not\
 333      * - encoding: set by lavc\
 334      * - decoding: set by lavc\
 335      */\
 336     int key_frame;\
 337 \
 338     /**\
 339      * picture type of the frame, see ?_TYPE below.\
 340      * - encoding: set by lavc for coded_picture (and set by user for input)\
 341      * - decoding: set by lavc\
 342      */\
 343     int pict_type;\
 344 \
 345     /**\
 346      * presentation timestamp in micro seconds (time when frame should be shown to user)\
 347      * if 0 then the frame_rate will be used as reference\
 348      * - encoding: MUST be set by user\
 349      * - decoding: set by lavc\
 350      */\
 351     int64_t pts;\
 352 \
 353     /**\
 354      * picture number in bitstream order.\
 355      * - encoding: set by\
 356      * - decoding: set by lavc\
 357      */\
 358     int coded_picture_number;\
 359     /**\
 360      * picture number in display order.\
 361      * - encoding: set by\
 362      * - decoding: set by lavc\
 363      */\
 364     int display_picture_number;\
 365 \
 366     /**\
 367      * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
 368      * - encoding: set by lavc for coded_picture (and set by user for input)\
 369      * - decoding: set by lavc\
 370      */\
 371     int quality; \
 372 \
 373     /**\
 374      * buffer age (1->was last buffer and dint change, 2->..., ...).\
 375      * set to INT_MAX if the buffer has not been used yet \
 376      * - encoding: unused\
 377      * - decoding: MUST be set by get_buffer()\
 378      */\
 379     int age;\
 380 \
 381     /**\
 382      * is this picture used as reference\
 383      * - encoding: unused\
 384      * - decoding: set by lavc (before get_buffer() call))\
 385      */\
 386     int reference;\
 387 \
 388     /**\
 389      * QP table\
 390      * - encoding: unused\
 391      * - decoding: set by lavc\
 392      */\
 393     int8_t *qscale_table;\
 394     /**\
 395      * QP store stride\
 396      * - encoding: unused\
 397      * - decoding: set by lavc\
 398      */\
 399     int qstride;\
 400 \
 401     /**\
 402      * mbskip_table[mb]>=1 if MB didnt change\
 403      * stride= mb_width = (width+15)>>4\
 404      * - encoding: unused\
 405      * - decoding: set by lavc\
 406      */\
 407     uint8_t *mbskip_table;\
 408 \
 409     /**\
 410      * for some private data of the user\
 411      * - encoding: unused\
 412      * - decoding: set by user\
 413      */\
 414     void *opaque;\
 415 \
 416     /**\
 417      * error\
 418      * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
 419      * - decoding: unused\
 420      */\
 421     uint64_t error[4];\
 422 \
 423     /**\
 424      * type of the buffer (to keep track of who has to dealloc data[*])\
 425      * - encoding: set by the one who allocs it\
 426      * - decoding: set by the one who allocs it\
 427      * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
 428      */\
 429     int type;\
 430     \
 431     /**\
 432      * when decoding, this signal how much the picture must be delayed.\
 433      * extra_delay = repeat_pict / (2*fps)\
 434      * - encoding: unused\
 435      * - decoding: set by lavc\
 436      */\
 437     int repeat_pict;\
 438     \
 439     /**\
 440      * \
 441      */\
 442     int qscale_type;\
 443     \
 444     /**\
 445      * The content of the picture is interlaced.\
 446      * - encoding: set by user\
 447      * - decoding: set by lavc (default 0)\
 448      */\
 449     int interlaced_frame;\
 450     \
 451     /**\
 452      * if the content is interlaced, is top field displayed first.\
 453      * - encoding: set by user\
 454      * - decoding: set by lavc\
 455      */\
 456     int top_field_first;\
 457     \
 458     /**\
 459      * Pan scan.\
 460      * - encoding: set by user\
 461      * - decoding: set by lavc\
 462      */\
 463     AVPanScan *pan_scan;\
 464     \
 465     /**\
 466      * tell user application that palette has changed from previous frame.\
 467      * - encoding: ??? (no palette-enabled encoder yet)\
 468      * - decoding: set by lavc (default 0)\
 469      */\
 470     int palette_has_changed;\
 471     \
 472     /**\
 473      * Codec suggestion on buffer type if != 0\
 474      * - encoding: unused\
 475      * - decoding: set by lavc (before get_buffer() call))\
 476      */\
 477     int buffer_hints;\
 478
 479 #define FF_QSCALE_TYPE_MPEG1    0
 480 #define FF_QSCALE_TYPE_MPEG2    1
 481
 482 #define FF_BUFFER_TYPE_INTERNAL 1
 483 #define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
 484 #define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base)
 485 #define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
 486
 487
 488 #define FF_I_TYPE 1 // Intra
 489 #define FF_P_TYPE 2 // Predicted
 490 #define FF_B_TYPE 3 // Bi-dir predicted
 491 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
 492 #define FF_SI_TYPE 5
 493 #define FF_SP_TYPE 6
 494
 495 #define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
 496 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
 497 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
 498 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
 499
 500 /**
 501  * Audio Video Frame.
 502  */
 503 typedef struct AVFrame {
 504     FF_COMMON_FRAME
 505 } AVFrame;
 506
 507 #define DEFAULT_FRAME_RATE_BASE 1001000
 508
 509 /**
 510  * main external api structure.
 511  */
 512 typedef struct AVCodecContext {
 513     /**
 514      * the average bitrate.
 515      * - encoding: set by user. unused for constant quantizer encoding
 516      * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
 517      */
 518     int bit_rate;
 519
 520     /**
 521      * number of bits the bitstream is allowed to diverge from the reference.
 522      *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
 523      * - encoding: set by user. unused for constant quantizer encoding
 524      * - decoding: unused
 525      */
 526     int bit_rate_tolerance;
 527
 528     /**
 529      * CODEC_FLAG_*.
 530      * - encoding: set by user.
 531      * - decoding: set by user.
 532      */
 533     int flags;
 534
 535     /**
 536      * some codecs needs additionnal format info. It is stored here
 537      * - encoding: set by user.
 538      * - decoding: set by lavc. (FIXME is this ok?)
 539      */
 540     int sub_id;
 541
 542     /**
 543      * motion estimation algorithm used for video coding.
 544      * - encoding: MUST be set by user.
 545      * - decoding: unused
 546      */
 547     int me_method;
 548
 549     /**
 550      * some codecs need / can use extra-data like huffman tables.
 551      * mjpeg: huffman tables
 552      * rv10: additional flags
 553      * mpeg4: global headers (they can be in the bitstream or here)
 554      * - encoding: set/allocated/freed by lavc.
 555      * - decoding: set/allocated/freed by user.
 556      */
 557     void *extradata;
 558     int extradata_size;
 559
 560     /* video only */
 561     /**
 562      * frames per sec multiplied by frame_rate_base.
 563      * for variable fps this is the precission, so if the timestamps
 564      * can be specified in msec precssion then this is 1000*frame_rate_base
 565      * - encoding: MUST be set by user
 566      * - decoding: set by lavc. 0 or the frame_rate if available
 567      */
 568     int frame_rate;
 569
 570     /**
 571      * width / height.
 572      * - encoding: MUST be set by user.
 573      * - decoding: set by user if known, codec should override / dynamically change if needed
 574      */
 575     int width, height;
 576
 577 #define FF_ASPECT_SQUARE 1
 578 #define FF_ASPECT_4_3_625 2
 579 #define FF_ASPECT_4_3_525 3
 580 #define FF_ASPECT_16_9_625 4
 581 #define FF_ASPECT_16_9_525 5
 582 #define FF_ASPECT_EXTENDED 15
 583
 584     /**
 585      * the number of pictures in a group of pitures, or 0 for intra_only.
 586      * - encoding: set by user.
 587      * - decoding: unused
 588      */
 589     int gop_size;
 590
 591     /**
 592      * pixel format, see PIX_FMT_xxx.
 593      * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
 594      *                    conversion is in order. This only works for
 595      *                    codecs with one supported pix_fmt, we should
 596      *                    do something for a generic case as well.
 597      * - decoding: set by lavc.
 598      */
 599     enum PixelFormat pix_fmt;
 600
 601     /**
 602      * Frame rate emulation. If not zero lower layer (i.e. format handler)
 603      * has to read frames at native frame rate.
 604      * - encoding: set by user.
 605      * - decoding: unused.
 606      */
 607     int rate_emu;
 608
 609     /**
 610      * if non NULL, 'draw_horiz_band' is called by the libavcodec
 611      * decoder to draw an horizontal band. It improve cache usage. Not
 612      * all codecs can do that. You must check the codec capabilities
 613      * before
 614      * - encoding: unused
 615      * - decoding: set by user.
 616      * @param height the height of the slice
 617      * @param y the y position of the slice
 618      * @param type 1->top field, 2->bottom field, 3->frame
 619      * @param offset offset into the AVFrame.data from which the slice should be read
 620      */
 621     void (*draw_horiz_band)(struct AVCodecContext *s,
 622                             const AVFrame *src, int offset[4],
 623                             int y, int type, int height);
 624
 625     /* audio only */
 626     int sample_rate; ///< samples per sec
 627     int channels;
 628     int sample_fmt;  ///< sample format, currenly unused
 629
 630     /* the following data should not be initialized */
 631     int frame_size;     ///< in samples, initialized when calling 'init'
 632     int frame_number;   ///< audio or video frame number
 633     int real_pict_num;  ///< returns the real picture number of previous encoded frame
 634
 635     /**
 636      * number of frames the decoded output will be delayed relative to
 637      * the encoded input.
 638      * - encoding: set by lavc.
 639      * - decoding: unused
 640      */
 641     int delay;
 642
 643     /* - encoding parameters */
 644     float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
 645     float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
 646
 647     /**
 648      * minimum quantizer.
 649      * - encoding: set by user.
 650      * - decoding: unused
 651      */
 652     int qmin;
 653
 654     /**
 655      * maximum quantizer.
 656      * - encoding: set by user.
 657      * - decoding: unused
 658      */
 659     int qmax;
 660
 661     /**
 662      * maximum quantizer difference etween frames.
 663      * - encoding: set by user.
 664      * - decoding: unused
 665      */
 666     int max_qdiff;
 667
 668     /**
 669      * maximum number of b frames between non b frames.
 670      * note: the output will be delayed by max_b_frames+1 relative to the input
 671      * - encoding: set by user.
 672      * - decoding: unused
 673      */
 674     int max_b_frames;
 675
 676     /**
 677      * qscale factor between ip and b frames.
 678      * - encoding: set by user.
 679      * - decoding: unused
 680      */
 681     float b_quant_factor;
 682
 683     /** obsolete FIXME remove */
 684     int rc_strategy;
 685     int b_frame_strategy;
 686
 687     /**
 688      * hurry up amount.
 689      * - encoding: unused
 690      * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
 691      */
 692     int hurry_up;
 693
 694     struct AVCodec *codec;
 695
 696     void *priv_data;
 697
 698     /* The following data is for RTP friendly coding */
 699     /* By now only H.263/H.263+/MPEG4 coder honours this   */
 700     int rtp_mode;   /* 1 for activate RTP friendly-mode           */
 701                     /* highers numbers represent more error-prone */
 702                     /* enviroments, by now just "1" exist         */
 703
 704     int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
 705                             /* do it's best to deliver a chunk with size    */
 706                             /* below rtp_payload_size, the chunk will start */
 707                             /* with a start code on some codecs like H.263  */
 708                             /* This doesn't take account of any particular  */
 709                             /* headers inside the transmited RTP payload    */
 710
 711
 712     /* The RTP callcack: This function is called  */
 713     /* every time the encoder as a packet to send */
 714     /* Depends on the encoder if the data starts  */
 715     /* with a Start Code (it should) H.263 does   */
 716     void (*rtp_callback)(void *data, int size, int packet_number);
 717
 718     /* statistics, used for 2-pass encoding */
 719     int mv_bits;
 720     int header_bits;
 721     int i_tex_bits;
 722     int p_tex_bits;
 723     int i_count;
 724     int p_count;
 725     int skip_count;
 726     int misc_bits;
 727
 728     /**
 729      * number of bits used for the previously encoded frame.
 730      * - encoding: set by lavc
 731      * - decoding: unused
 732      */
 733     int frame_bits;
 734
 735     /**
 736      * private data of the user, can be used to carry app specific stuff.
 737      * - encoding: set by user
 738      * - decoding: set by user
 739      */
 740     void *opaque;
 741
 742     char codec_name[32];
 743     enum CodecType codec_type; /* see CODEC_TYPE_xxx */
 744     enum CodecID codec_id; /* see CODEC_ID_xxx */
 745
 746     /**
 747      * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
 748      * this is used to workaround some encoder bugs
 749      * - encoding: set by user, if not then the default based on codec_id will be used
 750      * - decoding: set by user, will be converted to upper case by lavc during init
 751      */
 752     unsigned int codec_tag;
 753
 754     /**
 755      * workaround bugs in encoders which sometimes cannot be detected automatically.
 756      * - encoding: unused
 757      * - decoding: set by user
 758      */
 759     int workaround_bugs;
 760 #define FF_BUG_AUTODETECT       1  ///< autodetection
 761 #define FF_BUG_OLD_MSMPEG4      2
 762 #define FF_BUG_XVID_ILACE       4
 763 #define FF_BUG_UMP4             8
 764 #define FF_BUG_NO_PADDING       16
 765 #define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
 766 #define FF_BUG_QPEL_CHROMA      64
 767 #define FF_BUG_STD_QPEL         128
 768 #define FF_BUG_QPEL_CHROMA2     256
 769 #define FF_BUG_DIRECT_BLOCKSIZE 512
 770 #define FF_BUG_EDGE             1024
 771 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
 772
 773     /**
 774      * luma single coeff elimination threshold.
 775      * - encoding: set by user
 776      * - decoding: unused
 777      */
 778     int luma_elim_threshold;
 779
 780     /**
 781      * chroma single coeff elimination threshold.
 782      * - encoding: set by user
 783      * - decoding: unused
 784      */
 785     int chroma_elim_threshold;
 786
 787     /**
 788      * strictly follow the std (MPEG4, ...).
 789      * - encoding: set by user
 790      * - decoding: unused
 791      */
 792     int strict_std_compliance;
 793
 794     /**
 795      * qscale offset between ip and b frames.
 796      * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
 797      * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
 798      * - encoding: set by user.
 799      * - decoding: unused
 800      */
 801     float b_quant_offset;
 802
 803     /**
 804      * error resilience higher values will detect more errors but may missdetect
 805      * some more or less valid parts as errors.
 806      * - encoding: unused
 807      * - decoding: set by user
 808      */
 809     int error_resilience;
 810 #define FF_ER_CAREFULL        1
 811 #define FF_ER_COMPLIANT       2
 812 #define FF_ER_AGGRESSIVE      3
 813 #define FF_ER_VERY_AGGRESSIVE 4
 814
 815     /**
 816      * called at the beginning of each frame to get a buffer for it.
 817      * if pic.reference is set then the frame will be read later by lavc
 818      * width and height should be rounded up to the next multiple of 16
 819      * - encoding: unused
 820      * - decoding: set by lavc, user can override
 821      */
 822     int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
 823
 824     /**
 825      * called to release buffers which where allocated with get_buffer.
 826      * a released buffer can be reused in get_buffer()
 827      * pic.data[*] must be set to NULL
 828      * - encoding: unused
 829      * - decoding: set by lavc, user can override
 830      */
 831     void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
 832
 833     /**
 834      * is 1 if the decoded stream contains b frames, 0 otherwise.
 835      * - encoding: unused
 836      * - decoding: set by lavc
 837      */
 838     int has_b_frames;
 839
 840     int block_align; ///< used by some WAV based audio codecs
 841
 842     int parse_only; /* - decoding only: if true, only parsing is done
 843                        (function avcodec_parse_frame()). The frame
 844                        data is returned. Only MPEG codecs support this now. */
 845
 846     /**
 847      * 0-> h263 quant 1-> mpeg quant.
 848      * - encoding: set by user.
 849      * - decoding: unused
 850      */
 851     int mpeg_quant;
 852
 853     /**
 854      * pass1 encoding statistics output buffer.
 855      * - encoding: set by lavc
 856      * - decoding: unused
 857      */
 858     char *stats_out;
 859
 860     /**
 861      * pass2 encoding statistics input buffer.
 862      * concatenated stuff from stats_out of pass1 should be placed here
 863      * - encoding: allocated/set/freed by user
 864      * - decoding: unused
 865      */
 866     char *stats_in;
 867
 868     /**
 869      * ratecontrol qmin qmax limiting method.
 870      * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
 871      * - encoding: set by user.
 872      * - decoding: unused
 873      */
 874     float rc_qsquish;
 875
 876     float rc_qmod_amp;
 877     int rc_qmod_freq;
 878
 879     /**
 880      * ratecontrol override, see RcOverride.
 881      * - encoding: allocated/set/freed by user.
 882      * - decoding: unused
 883      */
 884     RcOverride *rc_override;
 885     int rc_override_count;
 886
 887     /**
 888      * rate control equation.
 889      * - encoding: set by user
 890      * - decoding: unused
 891      */
 892     char *rc_eq;
 893
 894     /**
 895      * maximum bitrate.
 896      * - encoding: set by user.
 897      * - decoding: unused
 898      */
 899     int rc_max_rate;
 900
 901     /**
 902      * minimum bitrate.
 903      * - encoding: set by user.
 904      * - decoding: unused
 905      */
 906     int rc_min_rate;
 907
 908     /**
 909      * decoder bitstream buffer size.
 910      * - encoding: set by user.
 911      * - decoding: unused
 912      */
 913     int rc_buffer_size;
 914     float rc_buffer_aggressivity;
 915
 916     /**
 917      * qscale factor between p and i frames.
 918      * - encoding: set by user.
 919      * - decoding: unused
 920      */
 921     float i_quant_factor;
 922
 923     /**
 924      * qscale offset between p and i frames.
 925      * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
 926      * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
 927      * - encoding: set by user.
 928      * - decoding: unused
 929      */
 930     float i_quant_offset;
 931
 932     /**
 933      * initial complexity for pass1 ratecontrol.
 934      * - encoding: set by user.
 935      * - decoding: unused
 936      */
 937     float rc_initial_cplx;
 938
 939     /**
 940      * dct algorithm, see FF_DCT_* below.
 941      * - encoding: set by user
 942      * - decoding: unused
 943      */
 944     int dct_algo;
 945 #define FF_DCT_AUTO    0
 946 #define FF_DCT_FASTINT 1
 947 #define FF_DCT_INT     2
 948 #define FF_DCT_MMX     3
 949 #define FF_DCT_MLIB    4
 950 #define FF_DCT_ALTIVEC 5
 951 #define FF_DCT_FAAN    6
 952
 953     /**
 954      * luminance masking (0-> disabled).
 955      * - encoding: set by user
 956      * - decoding: unused
 957      */
 958     float lumi_masking;
 959
 960     /**
 961      * temporary complexity masking (0-> disabled).
 962      * - encoding: set by user
 963      * - decoding: unused
 964      */
 965     float temporal_cplx_masking;
 966
 967     /**
 968      * spatial complexity masking (0-> disabled).
 969      * - encoding: set by user
 970      * - decoding: unused
 971      */
 972     float spatial_cplx_masking;
 973
 974     /**
 975      * p block masking (0-> disabled).
 976      * - encoding: set by user
 977      * - decoding: unused
 978      */
 979     float p_masking;
 980
 981     /**
 982      * darkness masking (0-> disabled).
 983      * - encoding: set by user
 984      * - decoding: unused
 985      */
 986     float dark_masking;
 987
 988
 989     /* for binary compatibility */
 990     int unused;
 991
 992     /**
 993      * idct algorithm, see FF_IDCT_* below.
 994      * - encoding: set by user
 995      * - decoding: set by user
 996      */
 997     int idct_algo;
 998 #define FF_IDCT_AUTO         0
 999 #define FF_IDCT_INT          1
1000 #define FF_IDCT_SIMPLE       2
1001 #define FF_IDCT_SIMPLEMMX    3
1002 #define FF_IDCT_LIBMPEG2MMX  4
1003 #define FF_IDCT_PS2          5
1004 #define FF_IDCT_MLIB         6
1005 #define FF_IDCT_ARM          7
1006 #define FF_IDCT_ALTIVEC      8
1007 #define FF_IDCT_SH4          9
1008 #define FF_IDCT_SIMPLEARM    10
1009
1010     /**
1011      * slice count.
1012      * - encoding: set by lavc
1013      * - decoding: set by user (or 0)
1014      */
1015     int slice_count;
1016     /**
1017      * slice offsets in the frame in bytes.
1018      * - encoding: set/allocated by lavc
1019      * - decoding: set/allocated by user (or NULL)
1020      */
1021     int *slice_offset;
1022
1023     /**
1024      * error concealment flags.
1025      * - encoding: unused
1026      * - decoding: set by user
1027      */
1028     int error_concealment;
1029 #define FF_EC_GUESS_MVS   1
1030 #define FF_EC_DEBLOCK     2
1031
1032     /**
1033      * dsp_mask could be add used to disable unwanted CPU features
1034      * CPU features (i.e. MMX, SSE. ...)
1035      *
1036      * with FORCE flag you may instead enable given CPU features
1037      * (Dangerous: usable in case of misdetection, improper usage however will
1038      * result into program crash)
1039      */
1040     unsigned dsp_mask;
1041 #define FF_MM_FORCE     0x80000000 /* force usage of selected flags (OR) */
1042     /* lower 16 bits - CPU features */
1043 #ifdef HAVE_MMX
1044 #define FF_MM_MMX       0x0001 /* standard MMX */
1045 #define FF_MM_3DNOW     0x0004 /* AMD 3DNOW */
1046 #define FF_MM_MMXEXT    0x0002 /* SSE integer functions or AMD MMX ext */
1047 #define FF_MM_SSE       0x0008 /* SSE functions */
1048 #define FF_MM_SSE2      0x0010 /* PIV SSE2 functions */
1049 #endif /* HAVE_MMX */
1050
1051     /**
1052      * bits per sample/pixel from the demuxer (needed for huffyuv).
1053      * - encoding: set by lavc
1054      * - decoding: set by user
1055      */
1056      int bits_per_sample;
1057
1058     /**
1059      * prediction method (needed for huffyuv).
1060      * - encoding: set by user
1061      * - decoding: unused
1062      */
1063      int prediction_method;
1064 #define FF_PRED_LEFT   0
1065 #define FF_PRED_PLANE  1
1066 #define FF_PRED_MEDIAN 2
1067
1068     /**
1069      * sample aspect ratio (0 if unknown).
1070      * numerator and denominator must be relative prime and smaller then 256 for some video standards
1071      * - encoding: set by user.
1072      * - decoding: set by lavc.
1073      */
1074     AVRational sample_aspect_ratio;
1075
1076     /**
1077      * the picture in the bitstream.
1078      * - encoding: set by lavc
1079      * - decoding: set by lavc
1080      */
1081     AVFrame *coded_frame;
1082
1083     /**
1084      * debug.
1085      * - encoding: set by user.
1086      * - decoding: set by user.
1087      */
1088     int debug;
1089 #define FF_DEBUG_PICT_INFO 1
1090 #define FF_DEBUG_RC        2
1091 #define FF_DEBUG_BITSTREAM 4
1092 #define FF_DEBUG_MB_TYPE   8
1093 #define FF_DEBUG_QP        16
1094 #define FF_DEBUG_MV        32
1095 #define FF_DEBUG_VIS_MV    0x00000040
1096 #define FF_DEBUG_SKIP      0x00000080
1097 #define FF_DEBUG_STARTCODE 0x00000100
1098 #define FF_DEBUG_PTS       0x00000200
1099 #define FF_DEBUG_ER        0x00000400
1100 #define FF_DEBUG_MMCO      0x00000800
1101 #define FF_DEBUG_BUGS      0x00001000
1102
1103     /**
1104      * error.
1105      * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1106      * - decoding: unused
1107      */
1108     uint64_t error[4];
1109
1110     /**
1111      * minimum MB quantizer.
1112      * - encoding: set by user.
1113      * - decoding: unused
1114      */
1115     int mb_qmin;
1116
1117     /**
1118      * maximum MB quantizer.
1119      * - encoding: set by user.
1120      * - decoding: unused
1121      */
1122     int mb_qmax;
1123
1124     /**
1125      * motion estimation compare function.
1126      * - encoding: set by user.
1127      * - decoding: unused
1128      */
1129     int me_cmp;
1130     /**
1131      * subpixel motion estimation compare function.
1132      * - encoding: set by user.
1133      * - decoding: unused
1134      */
1135     int me_sub_cmp;
1136     /**
1137      * macroblock compare function (not supported yet).
1138      * - encoding: set by user.
1139      * - decoding: unused
1140      */
1141     int mb_cmp;
1142 #define FF_CMP_SAD  0
1143 #define FF_CMP_SSE  1
1144 #define FF_CMP_SATD 2
1145 #define FF_CMP_DCT  3
1146 #define FF_CMP_PSNR 4
1147 #define FF_CMP_BIT  5
1148 #define FF_CMP_RD   6
1149 #define FF_CMP_ZERO 7
1150 #define FF_CMP_CHROMA 256
1151
1152     /**
1153      * ME diamond size & shape.
1154      * - encoding: set by user.
1155      * - decoding: unused
1156      */
1157     int dia_size;
1158
1159     /**
1160      * amount of previous MV predictors (2a+1 x 2a+1 square).
1161      * - encoding: set by user.
1162      * - decoding: unused
1163      */
1164     int last_predictor_count;
1165
1166     /**
1167      * pre pass for motion estimation.
1168      * - encoding: set by user.
1169      * - decoding: unused
1170      */
1171     int pre_me;
1172
1173     /**
1174      * motion estimation pre pass compare function.
1175      * - encoding: set by user.
1176      * - decoding: unused
1177      */
1178     int me_pre_cmp;
1179
1180     /**
1181      * ME pre pass diamond size & shape.
1182      * - encoding: set by user.
1183      * - decoding: unused
1184      */
1185     int pre_dia_size;
1186
1187     /**
1188      * subpel ME quality.
1189      * - encoding: set by user.
1190      * - decoding: unused
1191      */
1192     int me_subpel_quality;
1193
1194     /**
1195      * callback to negotiate the pixelFormat.
1196      * @param fmt is the list of formats which are supported by the codec,
1197      * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1198      * the first is allways the native one
1199      * @return the choosen format
1200      * - encoding: unused
1201      * - decoding: set by user, if not set then the native format will always be choosen
1202      */
1203     enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1204
1205     /**
1206      * DTG active format information (additionnal aspect ratio
1207      * information only used in DVB MPEG2 transport streams). 0 if
1208      * not set.
1209      *
1210      * - encoding: unused.
1211      * - decoding: set by decoder
1212      */
1213     int dtg_active_format;
1214 #define FF_DTG_AFD_SAME         8
1215 #define FF_DTG_AFD_4_3          9
1216 #define FF_DTG_AFD_16_9         10
1217 #define FF_DTG_AFD_14_9         11
1218 #define FF_DTG_AFD_4_3_SP_14_9  13
1219 #define FF_DTG_AFD_16_9_SP_14_9 14
1220 #define FF_DTG_AFD_SP_4_3       15
1221
1222     /**
1223      * Maximum motion estimation search range in subpel units.
1224      * if 0 then no limit
1225      *
1226      * - encoding: set by user.
1227      * - decoding: unused.
1228      */
1229     int me_range;
1230
1231     /**
1232      * frame_rate_base.
1233      * for variable fps this is 1
1234      * - encoding: set by user.
1235      * - decoding: set by lavc.
1236      * @todo move this after frame_rate
1237      */
1238
1239     int frame_rate_base;
1240     /**
1241      * intra quantizer bias.
1242      * - encoding: set by user.
1243      * - decoding: unused
1244      */
1245     int intra_quant_bias;
1246 #define FF_DEFAULT_QUANT_BIAS 999999
1247
1248     /**
1249      * inter quantizer bias.
1250      * - encoding: set by user.
1251      * - decoding: unused
1252      */
1253     int inter_quant_bias;
1254
1255     /**
1256      * color table ID.
1257      * - encoding: unused.
1258      * - decoding: which clrtable should be used for 8bit RGB images
1259      *             table have to be stored somewhere FIXME
1260      */
1261     int color_table_id;
1262
1263     /**
1264      * internal_buffer count.
1265      * Dont touch, used by lavc default_get_buffer()
1266      */
1267     int internal_buffer_count;
1268
1269     /**
1270      * internal_buffers.
1271      * Dont touch, used by lavc default_get_buffer()
1272      */
1273     void *internal_buffer;
1274
1275 #define FF_LAMBDA_SHIFT 7
1276 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1277 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1278 #define FF_LAMBDA_MAX (256*128-1)
1279
1280 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1281     /**
1282      * global quality for codecs which cannot change it per frame.
1283      * this should be proportional to MPEG1/2/4 qscale.
1284      * - encoding: set by user.
1285      * - decoding: unused
1286      */
1287     int global_quality;
1288
1289 #define FF_CODER_TYPE_VLC   0
1290 #define FF_CODER_TYPE_AC    1
1291     /**
1292      * coder type
1293      * - encoding: set by user.
1294      * - decoding: unused
1295      */
1296     int coder_type;
1297
1298     /**
1299      * context model
1300      * - encoding: set by user.
1301      * - decoding: unused
1302      */
1303     int context_model;
1304
1305     /**
1306      * slice flags
1307      * - encoding: unused
1308      * - decoding: set by user.
1309      */
1310     int slice_flags;
1311 #define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1312 #define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1313 #define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1314
1315     /**
1316      * XVideo Motion Acceleration
1317      * - encoding: forbidden
1318      * - decoding: set by decoder
1319      */
1320     int xvmc_acceleration;
1321
1322     /**
1323      * macroblock decision mode
1324      * - encoding: set by user.
1325      * - decoding: unused
1326      */
1327     int mb_decision;
1328 #define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1329 #define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1330 #define FF_MB_DECISION_RD     2        ///< rate distoration
1331
1332     /**
1333      * custom intra quantization matrix
1334      * - encoding: set by user, can be NULL
1335      * - decoding: set by lavc
1336      */
1337     uint16_t *intra_matrix;
1338
1339     /**
1340      * custom inter quantization matrix
1341      * - encoding: set by user, can be NULL
1342      * - decoding: set by lavc
1343      */
1344     uint16_t *inter_matrix;
1345
1346     /**
1347      * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1348      * this is used to workaround some encoder bugs
1349      * - encoding: unused
1350      * - decoding: set by user, will be converted to upper case by lavc during init
1351      */
1352     unsigned int stream_codec_tag;
1353
1354     /**
1355      * scene change detection threshold.
1356      * 0 is default, larger means fewer detected scene changes
1357      * - encoding: set by user.
1358      * - decoding: unused
1359      */
1360     int scenechange_threshold;
1361
1362     /**
1363      * minimum lagrange multipler
1364      * - encoding: set by user.
1365      * - decoding: unused
1366      */
1367     int lmin;
1368
1369     /**
1370      * maximum lagrange multipler
1371      * - encoding: set by user.
1372      * - decoding: unused
1373      */
1374     int lmax;
1375
1376     /**
1377      * Palette control structure
1378      * - encoding: ??? (no palette-enabled encoder yet)
1379      * - decoding: set by user.
1380      */
1381     struct AVPaletteControl *palctrl;
1382
1383     /**
1384      * noise reduction strength
1385      * - encoding: set by user.
1386      * - decoding: unused
1387      */
1388     int noise_reduction;
1389
1390     /**
1391      * called at the beginning of a frame to get cr buffer for it.
1392      * buffer type (size, hints) must be the same. lavc won't check it.
1393      * lavc will pass previous buffer in pic, function should return
1394      * same buffer or new buffer with old frame "painted" into it.
1395      * if pic.data[0] == NULL must behave like get_buffer().
1396      * - encoding: unused
1397      * - decoding: set by lavc, user can override
1398      */
1399     int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1400
1401 } AVCodecContext;
1402
1403
1404 /**
1405  * AVOption.
1406  */
1407 typedef struct AVOption {
1408     /** options' name */
1409     const char *name; /* if name is NULL, it indicates a link to next */
1410     /** short English text help or const struct AVOption* subpointer */
1411     const char *help; //        const struct AVOption* sub;
1412     /** offset to context structure where the parsed value should be stored */
1413     int offset;
1414     /** options' type */
1415     int type;
1416 #define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1417 #define FF_OPT_TYPE_DOUBLE 2    ///< double
1418 #define FF_OPT_TYPE_INT 3       ///< integer
1419 #define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1420 #define FF_OPT_TYPE_MASK 0x1f   ///< mask for types - upper bits are various flags
1421 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1422 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1423 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1424     /** min value  (min == max   ->  no limits) */
1425     double min;
1426     /** maximum value for double/int */
1427     double max;
1428     /** default boo [0,1]l/double/int value */
1429     double defval;
1430     /**
1431      * default string value (with optional semicolon delimited extra option-list
1432      * i.e.   option1;option2;option3
1433      * defval might select other then first argument as default
1434      */
1435     const char *defstr;
1436 #define FF_OPT_MAX_DEPTH 10
1437 } AVOption;
1438
1439 /**
1440  * Parse option(s) and sets fields in passed structure
1441  * @param strct structure where the parsed results will be written
1442  * @param list  list with AVOptions
1443  * @param opts  string with options for parsing
1444  */
1445 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1446
1447
1448 /**
1449  * AVCodec.
1450  */
1451 typedef struct AVCodec {
1452     const char *name;
1453     enum CodecType type;
1454     int id;
1455     int priv_data_size;
1456     int (*init)(AVCodecContext *);
1457     int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1458     int (*close)(AVCodecContext *);
1459     int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1460                   uint8_t *buf, int buf_size);
1461     int capabilities;
1462     const AVOption *options;
1463     struct AVCodec *next;
1464     void (*flush)(AVCodecContext *);
1465 } AVCodec;
1466
1467 /**
1468  * four components are given, that's all.
1469  * the last component is alpha
1470  */
1471 typedef struct AVPicture {
1472     uint8_t *data[4];
1473     int linesize[4];       ///< number of bytes per line
1474 } AVPicture;
1475
1476 /**
1477  * AVPaletteControl
1478  * This structure defines a method for communicating palette changes
1479  * between and demuxer and a decoder.
1480  */
1481 #define AVPALETTE_SIZE 1024
1482 #define AVPALETTE_COUNT 256
1483 typedef struct AVPaletteControl {
1484
1485     /* demuxer sets this to 1 to indicate the palette has changed;
1486      * decoder resets to 0 */
1487     int palette_changed;
1488
1489     /* 4-byte ARGB palette entries, stored in native byte order; note that
1490      * the individual palette components should be on a 8-bit scale; if
1491      * the palette data comes from a IBM VGA native format, the component
1492      * data is probably 6 bits in size and needs to be scaled */
1493     unsigned int palette[AVPALETTE_COUNT];
1494
1495 } AVPaletteControl;
1496
1497 extern AVCodec ac3_encoder;
1498 extern AVCodec mp2_encoder;
1499 extern AVCodec mp3lame_encoder;
1500 extern AVCodec oggvorbis_encoder;
1501 extern AVCodec faac_encoder;
1502 extern AVCodec mpeg1video_encoder;
1503 extern AVCodec mpeg2video_encoder;
1504 extern AVCodec h263_encoder;
1505 extern AVCodec h263p_encoder;
1506 extern AVCodec flv_encoder;
1507 extern AVCodec rv10_encoder;
1508 extern AVCodec rv20_encoder;
1509 extern AVCodec mjpeg_encoder;
1510 extern AVCodec ljpeg_encoder;
1511 extern AVCodec mpeg4_encoder;
1512 extern AVCodec msmpeg4v1_encoder;
1513 extern AVCodec msmpeg4v2_encoder;
1514 extern AVCodec msmpeg4v3_encoder;
1515 extern AVCodec wmv1_encoder;
1516 extern AVCodec wmv2_encoder;
1517 extern AVCodec huffyuv_encoder;
1518 extern AVCodec h264_encoder;
1519 extern AVCodec asv1_encoder;
1520 extern AVCodec asv2_encoder;
1521 extern AVCodec vcr1_encoder;
1522 extern AVCodec ffv1_encoder;
1523 extern AVCodec mdec_encoder;
1524
1525 extern AVCodec h263_decoder;
1526 extern AVCodec mpeg4_decoder;
1527 extern AVCodec msmpeg4v1_decoder;
1528 extern AVCodec msmpeg4v2_decoder;
1529 extern AVCodec msmpeg4v3_decoder;
1530 extern AVCodec wmv1_decoder;
1531 extern AVCodec wmv2_decoder;
1532 extern AVCodec mpeg1video_decoder;
1533 extern AVCodec mpeg2video_decoder;
1534 extern AVCodec mpegvideo_decoder;
1535 extern AVCodec mpeg_xvmc_decoder;
1536 extern AVCodec h263i_decoder;
1537 extern AVCodec flv_decoder;
1538 extern AVCodec rv10_decoder;
1539 extern AVCodec rv20_decoder;
1540 extern AVCodec svq1_decoder;
1541 extern AVCodec svq3_decoder;
1542 extern AVCodec dvvideo_decoder;
1543 extern AVCodec wmav1_decoder;
1544 extern AVCodec wmav2_decoder;
1545 extern AVCodec mjpeg_decoder;
1546 extern AVCodec mjpegb_decoder;
1547 extern AVCodec sp5x_decoder;
1548 extern AVCodec mp2_decoder;
1549 extern AVCodec mp3_decoder;
1550 extern AVCodec mace3_decoder;
1551 extern AVCodec mace6_decoder;
1552 extern AVCodec huffyuv_decoder;
1553 extern AVCodec oggvorbis_decoder;
1554 extern AVCodec cyuv_decoder;
1555 extern AVCodec h264_decoder;
1556 extern AVCodec indeo3_decoder;
1557 extern AVCodec vp3_decoder;
1558 extern AVCodec theora_decoder;
1559 extern AVCodec amr_nb_decoder;
1560 extern AVCodec amr_nb_encoder;
1561 extern AVCodec amr_wb_encoder;
1562 extern AVCodec amr_wb_decoder;
1563 extern AVCodec aac_decoder;
1564 extern AVCodec mpeg4aac_decoder;
1565 extern AVCodec asv1_decoder;
1566 extern AVCodec asv2_decoder;
1567 extern AVCodec vcr1_decoder;
1568 extern AVCodec cljr_decoder;
1569 extern AVCodec ffv1_decoder;
1570 extern AVCodec fourxm_decoder;
1571 extern AVCodec mdec_decoder;
1572 extern AVCodec roq_decoder;
1573 extern AVCodec interplay_video_decoder;
1574 extern AVCodec xan_wc3_decoder;
1575 extern AVCodec rpza_decoder;
1576 extern AVCodec cinepak_decoder;
1577 extern AVCodec msrle_decoder;
1578 extern AVCodec msvideo1_decoder;
1579 extern AVCodec vqa_decoder;
1580 extern AVCodec idcin_decoder;
1581 extern AVCodec eightbps_decoder;
1582 extern AVCodec smc_decoder;
1583 extern AVCodec flic_decoder;
1584 extern AVCodec ra_144_decoder;
1585 extern AVCodec ra_288_decoder;
1586 extern AVCodec roq_dpcm_decoder;
1587 extern AVCodec interplay_dpcm_decoder;
1588 extern AVCodec xan_dpcm_decoder;
1589
1590 /* pcm codecs */
1591 #define PCM_CODEC(id, name) \
1592 extern AVCodec name ## _decoder; \
1593 extern AVCodec name ## _encoder
1594
1595 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1596 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1597 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1598 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1599 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1600 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1601 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1602 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1603
1604 /* adpcm codecs */
1605
1606 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1607 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1608 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1609 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1610 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1611 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1612 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1613 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1614 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1615
1616 #undef PCM_CODEC
1617
1618 /* dummy raw video codec */
1619 extern AVCodec rawvideo_encoder;
1620 extern AVCodec rawvideo_decoder;
1621
1622 /* the following codecs use external GPL libs */
1623 extern AVCodec ac3_decoder;
1624
1625 /* resample.c */
1626
1627 struct ReSampleContext;
1628
1629 typedef struct ReSampleContext ReSampleContext;
1630
1631 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1632                                      int output_rate, int input_rate);
1633 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1634 void audio_resample_close(ReSampleContext *s);
1635
1636 /* YUV420 format is assumed ! */
1637
1638 struct ImgReSampleContext;
1639
1640 typedef struct ImgReSampleContext ImgReSampleContext;
1641
1642 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1643                                       int input_width, int input_height);
1644
1645 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1646                                       int iwidth, int iheight,
1647                                       int topBand, int bottomBand,
1648                                       int leftBand, int rightBand);
1649
1650 void img_resample(ImgReSampleContext *s,
1651                   AVPicture *output, const AVPicture *input);
1652
1653 void img_resample_close(ImgReSampleContext *s);
1654
1655 /**
1656  * Allocate memory for a picture.  Call avpicture_free to free it.
1657  *
1658  * @param picture the picture to be filled in.
1659  * @param pix_fmt the format of the picture.
1660  * @param width the width of the picture.
1661  * @param height the height of the picture.
1662  * @return 0 if successful, -1 if not.
1663  */
1664 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1665
1666 /* Free a picture previously allocated by avpicture_alloc. */
1667 void avpicture_free(AVPicture *picture);
1668
1669 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1670                    int pix_fmt, int width, int height);
1671 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1672                      unsigned char *dest, int dest_size);
1673 int avpicture_get_size(int pix_fmt, int width, int height);
1674 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1675 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1676 enum PixelFormat avcodec_get_pix_fmt(const char* name);
1677
1678 #define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
1679 #define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
1680 #define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
1681 #define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
1682 #define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
1683 #define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1684
1685 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1686                              int has_alpha);
1687 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1688                               int has_alpha, int *loss_ptr);
1689
1690 #define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
1691 #define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
1692 int img_get_alpha_info(const AVPicture *src,
1693                        int pix_fmt, int width, int height);
1694
1695 /* convert among pixel formats */
1696 int img_convert(AVPicture *dst, int dst_pix_fmt,
1697                 const AVPicture *src, int pix_fmt,
1698                 int width, int height);
1699
1700 /* deinterlace a picture */
1701 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1702                           int pix_fmt, int width, int height);
1703
1704 /* external high level API */
1705
1706 extern AVCodec *first_avcodec;
1707
1708 /* returns LIBAVCODEC_VERSION_INT constant */
1709 unsigned avcodec_version(void);
1710 /* returns LIBAVCODEC_BUILD constant */
1711 unsigned avcodec_build(void);
1712 void avcodec_init(void);
1713
1714 void register_avcodec(AVCodec *format);
1715 AVCodec *avcodec_find_encoder(enum CodecID id);
1716 AVCodec *avcodec_find_encoder_by_name(const char *name);
1717 AVCodec *avcodec_find_decoder(enum CodecID id);
1718 AVCodec *avcodec_find_decoder_by_name(const char *name);
1719 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1720
1721 void avcodec_get_context_defaults(AVCodecContext *s);
1722 AVCodecContext *avcodec_alloc_context(void);
1723 AVFrame *avcodec_alloc_frame(void);
1724
1725 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1726 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1727 void avcodec_default_free_buffers(AVCodecContext *s);
1728
1729 /**
1730  * opens / inits the AVCodecContext.
1731  * not thread save!
1732  */
1733 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1734
1735 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
1736                          int *frame_size_ptr,
1737                          uint8_t *buf, int buf_size);
1738 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1739                          int *got_picture_ptr,
1740                          uint8_t *buf, int buf_size);
1741 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
1742                         int *data_size_ptr,
1743                         uint8_t *buf, int buf_size);
1744 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1745                          const short *samples);
1746 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1747                          const AVFrame *pict);
1748
1749 int avcodec_close(AVCodecContext *avctx);
1750
1751 void avcodec_register_all(void);
1752
1753 void avcodec_flush_buffers(AVCodecContext *avctx);
1754
1755 /* misc usefull functions */
1756
1757 /**
1758  * returns a single letter to describe the picture type
1759  */
1760 char av_get_pict_type_char(int pict_type);
1761
1762 /**
1763  * reduce a fraction.
1764  * this is usefull for framerate calculations
1765  * @param max the maximum allowed for dst_nom & dst_den
1766  * @return 1 if exact, 0 otherwise
1767  */
1768 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1769
1770 /**
1771  * rescale a 64bit integer.
1772  * a simple a*b/c isnt possible as it can overflow
1773  */
1774 int64_t av_rescale(int64_t a, int b, int c);
1775
1776
1777 /**
1778  * Interface for 0.5.0 version
1779  *
1780  * do not even think about it's usage for this moment
1781  */
1782
1783 typedef struct {
1784     /// compressed size used from given memory buffer
1785     int size;
1786     /// I/P/B frame type
1787     int frame_type;
1788 } avc_enc_result_t;
1789
1790 /**
1791  * Commands
1792  * order can't be changed - once it was defined
1793  */
1794 typedef enum {
1795     // general commands
1796     AVC_OPEN_BY_NAME = 0xACA000,
1797     AVC_OPEN_BY_CODEC_ID,
1798     AVC_OPEN_BY_FOURCC,
1799     AVC_CLOSE,
1800
1801     AVC_FLUSH,
1802     // pin - struct { uint8_t* src, uint_t src_size }
1803     // pout - struct { AVPicture* img, consumed_bytes,
1804     AVC_DECODE,
1805     // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1806     // pout - uint_t used_from_dest_size
1807     AVC_ENCODE,
1808
1809     // query/get video commands
1810     AVC_GET_VERSION = 0xACB000,
1811     AVC_GET_WIDTH,
1812     AVC_GET_HEIGHT,
1813     AVC_GET_DELAY,
1814     AVC_GET_QUANT_TABLE,
1815     // ...
1816
1817     // query/get audio commands
1818     AVC_GET_FRAME_SIZE = 0xABC000,
1819
1820     // maybe define some simple structure which
1821     // might be passed to the user - but they can't
1822     // contain any codec specific parts and these
1823     // calls are usualy necessary only few times
1824
1825     // set video commands
1826     AVC_SET_WIDTH = 0xACD000,
1827     AVC_SET_HEIGHT,
1828
1829     // set video encoding commands
1830     AVC_SET_FRAME_RATE = 0xACD800,
1831     AVC_SET_QUALITY,
1832     AVC_SET_HURRY_UP,
1833
1834     // set audio commands
1835     AVC_SET_SAMPLE_RATE = 0xACE000,
1836     AVC_SET_CHANNELS,
1837
1838 } avc_cmd_t;
1839
1840 /**
1841  * \param handle  allocated private structure by libavcodec
1842  *                for initialization pass NULL - will be returned pout
1843  *                user is supposed to know nothing about its structure
1844  * \param cmd     type of operation to be performed
1845  * \param pint    input parameter
1846  * \param pout    output parameter
1847  *
1848  * \returns  command status - eventually for query command it might return
1849  * integer resulting value
1850  */
1851 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1852
1853 /* frame parsing */
1854 typedef struct AVCodecParserContext {
1855     void *priv_data;
1856     struct AVCodecParser *parser;
1857     int64_t frame_offset; /* offset of the current frame */
1858     int64_t cur_offset; /* current offset
1859                            (incremented by each av_parser_parse()) */
1860     int64_t last_frame_offset; /* offset of the last frame */
1861     /* video info */
1862     int pict_type; /* XXX: put it back in AVCodecContext */
1863     int repeat_pict; /* XXX: put it back in AVCodecContext */
1864     int64_t pts;     /* in us, if given by the codec (used by raw mpeg4) */
1865     int64_t dts;     /* in us, if given by the codec (used by raw mpeg4) */
1866 } AVCodecParserContext;
1867
1868 typedef struct AVCodecParser {
1869     int codec_ids[3]; /* several codec IDs are permitted */
1870     int priv_data_size;
1871     int (*parser_init)(AVCodecParserContext *s);
1872     int (*parser_parse)(AVCodecParserContext *s,
1873                         AVCodecContext *avctx,
1874                         uint8_t **poutbuf, int *poutbuf_size,
1875                         const uint8_t *buf, int buf_size);
1876     void (*parser_close)(AVCodecParserContext *s);
1877     struct AVCodecParser *next;
1878 } AVCodecParser;
1879
1880 extern AVCodecParser *av_first_parser;
1881
1882 void av_register_codec_parser(AVCodecParser *parser);
1883 AVCodecParserContext *av_parser_init(int codec_id);
1884 int av_parser_parse(AVCodecParserContext *s,
1885                     AVCodecContext *avctx,
1886                     uint8_t **poutbuf, int *poutbuf_size,
1887                     const uint8_t *buf, int buf_size);
1888 void av_parser_close(AVCodecParserContext *s);
1889
1890 extern AVCodecParser mpegvideo_parser;
1891 extern AVCodecParser mpeg4video_parser;
1892 extern AVCodecParser h263_parser;
1893 extern AVCodecParser h264_parser;
1894 extern AVCodecParser mpegaudio_parser;
1895 extern AVCodecParser ac3_parser;
1896
1897 /* memory */
1898 void *av_malloc(unsigned int size);
1899 void *av_mallocz(unsigned int size);
1900 void *av_realloc(void *ptr, unsigned int size);
1901 void av_free(void *ptr);
1902 char *av_strdup(const char *s);
1903 void __av_freep(void **ptr);
1904 #define av_freep(p) __av_freep((void **)(p))
1905 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
1906 /* for static data only */
1907 /* call av_free_static to release all staticaly allocated tables */
1908 void av_free_static(void);
1909 void *__av_mallocz_static(void** location, unsigned int size);
1910 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1911
1912 /* add by bero : in adx.c */
1913 int is_adx(const unsigned char *buf,size_t bufsize);
1914
1915 void img_copy(AVPicture *dst, const AVPicture *src,
1916               int pix_fmt, int width, int height);
1917
1918 /* av_log API */
1919
1920 #include <stdarg.h>
1921
1922 #define AV_LOG_ERROR 0
1923 #define AV_LOG_INFO 1
1924 #define AV_LOG_DEBUG 2
1925
1926 extern void av_log(AVCodecContext*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
1927 extern void av_vlog(AVCodecContext*, int level, const char *fmt, va_list);
1928 extern int av_log_get_level(void);
1929 extern void av_log_set_level(int);
1930 extern void av_log_set_callback(void (*)(AVCodecContext*, int, const char*, va_list));
1931
1932 #undef  AV_LOG_TRAP_PRINTF
1933 #ifdef AV_LOG_TRAP_PRINTF
1934 #define printf DO NOT USE
1935 #define fprintf DO NOT USE
1936 #undef stderr
1937 #define stderr DO NOT USE
1938 #endif
1939
1940 #ifdef __cplusplus
1941 }
1942 #endif
1943
1944 #endif /* AVCODEC_H */