hvirtual/quicktime/libavcodec/avcodec.h

   1 #ifndef AVCODEC_H
   2 #define AVCODEC_H
   3
   4 #include "common.h"
   5
   6 #define LIBAVCODEC_VERSION_INT 0x000406
   7 #define LIBAVCODEC_VERSION     "0.4.6"
   8 #define LIBAVCODEC_BUILD       4646
   9 #define LIBAVCODEC_BUILD_STR   "4646"
  10
  11 enum CodecID {
  12     CODEC_ID_NONE,
  13     CODEC_ID_MPEG1VIDEO,
  14     CODEC_ID_H263,
  15     CODEC_ID_RV10,
  16     CODEC_ID_MP2,
  17     CODEC_ID_MP3LAME,
  18     CODEC_ID_VORBIS,
  19     CODEC_ID_AC3,
  20     CODEC_ID_MJPEG,
  21     CODEC_ID_MJPEGB,
  22     CODEC_ID_MPEG4,
  23     CODEC_ID_RAWVIDEO,
  24     CODEC_ID_MSMPEG4V1,
  25     CODEC_ID_MSMPEG4V2,
  26     CODEC_ID_MSMPEG4V3,
  27     CODEC_ID_WMV1,
  28     CODEC_ID_WMV2,
  29     CODEC_ID_H263P,
  30     CODEC_ID_H263I,
  31     CODEC_ID_SVQ1,
  32     CODEC_ID_DVVIDEO,
  33     CODEC_ID_DVAUDIO,
  34     CODEC_ID_WMAV1,
  35     CODEC_ID_WMAV2,
  36     CODEC_ID_MACE3,
  37     CODEC_ID_MACE6,
  38     CODEC_ID_HUFFYUV,
  39
  40     /* various pcm "codecs" */
  41     CODEC_ID_PCM_S16LE,
  42     CODEC_ID_PCM_S16BE,
  43     CODEC_ID_PCM_U16LE,
  44     CODEC_ID_PCM_U16BE,
  45     CODEC_ID_PCM_S8,
  46     CODEC_ID_PCM_U8,
  47     CODEC_ID_PCM_MULAW,
  48     CODEC_ID_PCM_ALAW,
  49
  50     /* various adpcm codecs */
  51     CODEC_ID_ADPCM_IMA_QT,
  52     CODEC_ID_ADPCM_IMA_WAV,
  53     CODEC_ID_ADPCM_MS,
  54 };
  55
  56 enum CodecType {
  57     CODEC_TYPE_UNKNOWN = -1,
  58     CODEC_TYPE_VIDEO,
  59     CODEC_TYPE_AUDIO,
  60 };
  61
  62 enum PixelFormat {
  63     PIX_FMT_ANY = -1,
  64     PIX_FMT_YUV420P,
  65     PIX_FMT_YUV422,
  66     PIX_FMT_RGB24,
  67     PIX_FMT_BGR24,
  68     PIX_FMT_YUV422P,
  69     PIX_FMT_YUV444P,
  70     PIX_FMT_RGBA32,
  71     PIX_FMT_BGRA32,
  72     PIX_FMT_YUV410P,
  73     PIX_FMT_YUV411P,
  74     PIX_FMT_RGB565,
  75     PIX_FMT_RGB555,
  76 //    PIX_FMT_RGB5551,
  77     PIX_FMT_BGR565,
  78     PIX_FMT_BGR555,
  79 //    PIX_FMT_GBR565,
  80 //    PIX_FMT_GBR555
  81 };
  82
  83 /* currently unused, may be used if 24/32 bits samples ever supported */
  84 enum SampleFormat {
  85     SAMPLE_FMT_S16 = 0,         /* signed 16 bits */
  86 };
  87
  88 /* in bytes */
  89 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
  90
  91 /**
  92  * Required number of zero bytes at the end of the input bitstream for decoding.
  93  * to avoid overreading (and possibly segfaulting)
  94  */
  95 #define FF_INPUT_BUFFER_PADDING_SIZE 8
  96
  97 /* motion estimation type, EPZS by default */
  98 enum Motion_Est_ID {
  99     ME_ZERO = 1,
 100     ME_FULL,
 101     ME_LOG,
 102     ME_PHODS,
 103     ME_EPZS,
 104     ME_X1
 105 };
 106
 107 typedef struct RcOverride{
 108     int start_frame;
 109     int end_frame;
 110     int qscale; // if this is 0 then quality_factor will be used instead
 111     float quality_factor;
 112 } RcOverride;
 113
 114 /* only for ME compatiblity with old apps */
 115 extern int motion_estimation_method;
 116
 117 /* ME algos sorted by quality */
 118 static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
 119                                        ME_X1, ME_EPZS, ME_FULL };
 120
 121
 122 #define FF_MAX_B_FRAMES 8
 123
 124 /* encoding support
 125    these flags can be passed in AVCodecContext.flags before initing
 126    Note: note not everything is supported yet
 127 */
 128
 129 #define CODEC_FLAG_HQ     0x0001  /* brute force MB-type decission mode (slow) */
 130 #define CODEC_FLAG_QSCALE 0x0002  /* use fixed qscale */
 131 #define CODEC_FLAG_4MV    0x0004  /* 4 MV per MB allowed */
 132 #define CODEC_FLAG_QPEL   0x0010  /* use qpel MC */
 133 #define CODEC_FLAG_GMC    0x0020  /* use GMC */
 134 #define CODEC_FLAG_PART   0x0080  /* use data partitioning */
 135 /* parent program gurantees that the input for b-frame containing streams is not written to
 136    for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
 137 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
 138 #define CODEC_FLAG_PASS1 0x0200   /* use internal 2pass ratecontrol in first  pass mode */
 139 #define CODEC_FLAG_PASS2 0x0400   /* use internal 2pass ratecontrol in second pass mode */
 140 #define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
 141 #define CODEC_FLAG_GRAY  0x2000   /* only decode/encode grayscale */
 142 #define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
 143 #define CODEC_FLAG_PSNR           0x8000 /* error[?] variables will be set during encoding */
 144 #define CODEC_FLAG_TRUNCATED  0x00010000 /* input bitstream might be truncated at a random location instead
 145                                             of only at frame boundaries */
 146 #define CODEC_FLAG_NORMALIZE_AQP  0x00020000 /* normalize adaptive quantization */
 147 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
 148 #define CODEC_FLAG_LOW_DELAY      0x00080000 /* force low delay / will fail on b frames */
 149 #define CODEC_FLAG_ALT_SCAN       0x00100000 /* use alternate scan */
 150
 151 /* codec capabilities */
 152
 153 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
 154 #define CODEC_CAP_DR1             0x0002 /* direct rendering method 1 */
 155 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
 156    used */
 157 #define CODEC_CAP_PARSE_ONLY      0x0004
 158 #define CODEC_CAP_TRUNCATED       0x0008
 159
 160 #define FRAME_RATE_BASE 10000
 161
 162 #define FF_COMMON_FRAME \
 163     uint8_t *data[4];\
 164     int linesize[4];\
 165     /**\
 166      * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
 167      * this isnt used by lavc unless the default get/release_buffer() is used\
 168      * encoding: \
 169      * decoding: \
 170      */\
 171     uint8_t *base[4];\
 172     /**\
 173      * 1 -> keyframe, 0-> not\
 174      * encoding: set by lavc\
 175      * decoding: set by lavc\
 176      */\
 177     int key_frame;\
 178 \
 179     /**\
 180      * picture type of the frame, see ?_TYPE below\
 181      * encoding: set by lavc for coded_picture (and set by user for input)\
 182      * decoding: set by lavc\
 183      */\
 184     int pict_type;\
 185 \
 186     /**\
 187      * presentation timestamp in micro seconds (time when frame should be shown to user)\
 188      * if 0 then the frame_rate will be used as reference\
 189      * encoding: MUST be set by user\
 190      * decoding: set by lavc\
 191      */\
 192     long long int pts;\
 193 \
 194     /**\
 195      * picture number in bitstream order.\
 196      * encoding: set by\
 197      * decoding: set by lavc\
 198      */\
 199     int coded_picture_number;\
 200     /**\
 201      * encoding: set by\
 202      * decoding: set by lavc\
 203      * picture number in display order.\
 204      */\
 205     int display_picture_number;\
 206 \
 207     /**\
 208      * quality (between 1 (good) and 31 (bad)) \
 209      * encoding: set by lavc for coded_picture (and set by user for input)\
 210      * decoding: set by lavc\
 211      */\
 212     float quality; \
 213 \
 214     /**\
 215      * buffer age (1->was last buffer and dint change, 2->..., ...).\
 216      * set to something large if the buffer has not been used yet \
 217      * encoding: unused\
 218      * decoding: MUST be set by get_buffer()\
 219      */\
 220     int age;\
 221 \
 222     /**\
 223      * is this picture used as reference\
 224      * encoding: unused\
 225      * decoding: set by lavc (before get_buffer() call))\
 226      */\
 227     int reference;\
 228 \
 229     /**\
 230      * QP table\
 231      * encoding: unused\
 232      * decoding: set by lavc\
 233      */\
 234     int8_t *qscale_table;\
 235     /**\
 236      * QP store stride\
 237      * encoding: unused\
 238      * decoding: set by lavc\
 239      */\
 240     int qstride;\
 241 \
 242     /**\
 243      * mbskip_table[mb]>=1 if MB didnt change\
 244      * stride= mb_width = (width+15)>>4\
 245      * encoding: unused\
 246      * decoding: set by lavc\
 247      */\
 248     uint8_t *mbskip_table;\
 249 \
 250     /**\
 251      * for some private data of the user\
 252      * encoding: unused\
 253      * decoding: set by user\
 254      */\
 255     void *opaque;\
 256 \
 257     /**\
 258      * error\
 259      * encoding: set by lavc if flags&CODEC_FLAG_PSNR\
 260      * decoding: unused\
 261      */\
 262     uint64_t error[4];\
 263 \
 264     /**\
 265      * type of the buffer (to keep track of who has to dealloc data[*])\
 266      * encoding: set by the one who allocs it\
 267      * decoding: set by the one who allocs it\
 268      * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
 269      */\
 270     int type;\
 271
 272 #define FF_BUFFER_TYPE_INTERNAL 1
 273 #define FF_BUFFER_TYPE_USER     2 // Direct rendering buffers
 274 #define FF_BUFFER_TYPE_SHARED   4 // input frame for encoding(wont be dealloced)
 275
 276
 277 #define FF_I_TYPE 1 // Intra
 278 #define FF_P_TYPE 2 // Predicted
 279 #define FF_B_TYPE 3 // Bi-dir predicted
 280 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
 281
 282 typedef struct AVFrame {
 283     FF_COMMON_FRAME
 284 } AVFrame;
 285
 286 typedef struct AVCodecContext {
 287     /**
 288      * the average bitrate
 289      * encoding: set by user. unused for constant quantizer encoding
 290      * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
 291      */
 292     int bit_rate;
 293
 294     /**
 295      * number of bits the bitstream is allowed to diverge from the reference
 296      *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
 297      * encoding: set by user. unused for constant quantizer encoding
 298      * decoding: unused
 299      */
 300     int bit_rate_tolerance;
 301
 302     /**
 303      * CODEC_FLAG_*
 304      * encoding: set by user.
 305      * decoding: set by user.
 306      */
 307     int flags;
 308
 309     /**
 310      * some codecs needs additionnal format info. It is stored here
 311      * encoding: set by user.
 312      * decoding: set by lavc. (FIXME is this ok?)
 313      */
 314     int sub_id;
 315
 316     /**
 317      * motion estimation algorithm used for video coding
 318      * encoding: MUST be set by user.
 319      * decoding: unused
 320      */
 321     int me_method;
 322
 323     /**
 324      * some codecs need / can use extra-data like huffman tables
 325      * mjpeg: huffman tables
 326      * rv10: additional flags
 327      * mpeg4: global headers (they can be in the bitstream or here)
 328      * encoding: set/allocated/freed by lavc.
 329      * decoding: set/allocated/freed by user.
 330      */
 331     void *extradata;
 332     int extradata_size;
 333
 334     /* video only */
 335     /**
 336      * frames per sec multiplied by FRAME_RATE_BASE
 337      * for variable fps this is the precission, so if the timestamps
 338      * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
 339      * encoding: MUST be set by user
 340      * decoding: set by lavc. 0 or the frame_rate if available
 341      */
 342     int frame_rate;
 343
 344     /**
 345      * encoding: MUST be set by user.
 346      * decoding: set by user, some codecs might override / change it during playback
 347      */
 348     int width, height;
 349
 350 #define FF_ASPECT_SQUARE 1
 351 #define FF_ASPECT_4_3_625 2
 352 #define FF_ASPECT_4_3_525 3
 353 #define FF_ASPECT_16_9_625 4
 354 #define FF_ASPECT_16_9_525 5
 355 #define FF_ASPECT_EXTENDED 15
 356
 357     /**
 358      * the number of pictures in a group of pitures, or 0 for intra_only
 359      * encoding: set by user.
 360      * decoding: unused
 361      */
 362     int gop_size;
 363
 364     /**
 365      * pixel format, see PIX_FMT_xxx
 366      * encoding: unused
 367      * decoding: set by lavc.
 368      */
 369     enum PixelFormat pix_fmt;
 370
 371     int repeat_pict; /* when decoding, this signal how much the picture */
 372                      /* must be delayed.                                */
 373                      /* extra_delay = (repeat_pict / 2) * (1/fps)       */
 374
 375     /**
 376      * if non NULL, 'draw_horiz_band' is called by the libavcodec
 377      * decoder to draw an horizontal band. It improve cache usage. Not
 378      * all codecs can do that. You must check the codec capabilities
 379      * before
 380      * encoding: unused
 381      * decoding: set by user.
 382      */
 383     void (*draw_horiz_band)(struct AVCodecContext *s,
 384                             UINT8 **src_ptr, int linesize,
 385                             int y, int width, int height);
 386
 387     /* audio only */
 388     int sample_rate; /* samples per sec */
 389     int channels;
 390     int sample_fmt;  /* sample format, currenly unused */
 391
 392     /* the following data should not be initialized */
 393     int frame_size;     /* in samples, initialized when calling 'init' */
 394     int frame_number;   /* audio or video frame number */
 395     int real_pict_num;  /* returns the real picture number of
 396                            previous encoded frame */
 397
 398     /**
 399      * number of frames the decoded output will be delayed relative to
 400      * the encoded input
 401      * encoding: set by lavc.
 402      * decoding: unused
 403      */
 404     int delay;
 405
 406     /* encoding parameters */
 407     float qcompress;  /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
 408     float qblur;      /* amount of qscale smoothing over time (0.0-1.0) */
 409
 410     /**
 411      * minimum quantizer
 412      * encoding: set by user.
 413      * decoding: unused
 414      */
 415     int qmin;
 416
 417     /**
 418      * maximum quantizer
 419      * encoding: set by user.
 420      * decoding: unused
 421      */
 422     int qmax;
 423
 424     /**
 425      * maximum quantizer difference etween frames
 426      * encoding: set by user.
 427      * decoding: unused
 428      */
 429     int max_qdiff;
 430
 431     /**
 432      * maximum number of b frames between non b frames
 433      * note: the output will be delayed by max_b_frames+1 relative to the input
 434      * encoding: set by user.
 435      * decoding: unused
 436      */
 437     int max_b_frames;
 438
 439     /**
 440      * qscale factor between ip and b frames
 441      * encoding: set by user.
 442      * decoding: unused
 443      */
 444     float b_quant_factor;
 445
 446     /** obsolete FIXME remove */
 447     int rc_strategy;
 448     int b_frame_strategy;
 449
 450     /**
 451      * encoding: unused
 452      * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
 453      */
 454     int hurry_up;
 455
 456     struct AVCodec *codec;
 457
 458     void *priv_data;
 459
 460     /* The following data is for RTP friendly coding */
 461     /* By now only H.263/H.263+/MPEG4 coder honours this   */
 462     int rtp_mode;   /* 1 for activate RTP friendly-mode           */
 463                     /* highers numbers represent more error-prone */
 464                     /* enviroments, by now just "1" exist         */
 465
 466     int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
 467                             /* do it's best to deliver a chunk with size    */
 468                             /* below rtp_payload_size, the chunk will start */
 469                             /* with a start code on some codecs like H.263  */
 470                             /* This doesn't take account of any particular  */
 471                             /* headers inside the transmited RTP payload    */
 472
 473
 474     /* The RTP callcack: This function is called  */
 475     /* every time the encoder as a packet to send */
 476     /* Depends on the encoder if the data starts  */
 477     /* with a Start Code (it should) H.263 does   */
 478     void (*rtp_callback)(void *data, int size, int packet_number);
 479
 480     /* statistics, used for 2-pass encoding */
 481     int mv_bits;
 482     int header_bits;
 483     int i_tex_bits;
 484     int p_tex_bits;
 485     int i_count;
 486     int p_count;
 487     int skip_count;
 488     int misc_bits;
 489
 490     /**
 491      * number of bits used for the previously encoded frame
 492      * encoding: set by lavc
 493      * decoding: - for audio - bits_per_sample
 494      */
 495     int frame_bits;
 496
 497     /**
 498      * private data of the user, can be used to carry app specific stuff
 499      * encoding: set by user
 500      * decoding: set by user
 501      */
 502     void *opaque;
 503
 504     char codec_name[32];
 505     enum CodecType codec_type; /* see CODEC_TYPE_xxx */
 506     enum CodecID codec_id; /* see CODEC_ID_xxx */
 507     unsigned int codec_tag;  /* codec tag, only used if unknown codec */
 508
 509     /**
 510      * workaround bugs in encoders which sometimes cannot be detected automatically
 511      * encoding: unused
 512      * decoding: set by user
 513      */
 514     int workaround_bugs;
 515 #define FF_BUG_AUTODETECT       1  //autodetection
 516 #define FF_BUG_OLD_MSMPEG4      2
 517 #define FF_BUG_XVID_ILACE       4
 518 #define FF_BUG_UMP4             8
 519 #define FF_BUG_NO_PADDING       16
 520 #define FF_BUG_AC_VLC           32
 521 #define FF_BUG_QPEL_CHROMA      64
 522 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
 523
 524     /**
 525      * encoding: set by user
 526      * decoding: unused
 527      */
 528     int luma_elim_threshold;
 529
 530     /**
 531      * encoding: set by user
 532      * decoding: unused
 533      */
 534     int chroma_elim_threshold;
 535
 536     /**
 537      * strictly follow the std (MPEG4, ...)
 538      * encoding: set by user
 539      * decoding: unused
 540      */
 541     int strict_std_compliance;
 542
 543     /**
 544      * qscale offset between ip and b frames
 545      * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
 546      * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
 547      * encoding: set by user.
 548      * decoding: unused
 549      */
 550     float b_quant_offset;
 551
 552     /**
 553      * error resilience higher values will detect more errors but may missdetect
 554      * some more or less valid parts as errors
 555      * encoding: unused
 556      * decoding: set by user
 557      */
 558     int error_resilience;
 559 #define FF_ER_CAREFULL        1
 560 #define FF_ER_COMPLIANT       2
 561 #define FF_ER_AGGRESSIVE      3
 562 #define FF_ER_VERY_AGGRESSIVE 4
 563
 564     /**
 565      * called at the beginning of each frame to get a buffer for it.
 566      * if pic.reference is set then the frame will be read later by lavc
 567      * encoding: unused
 568      * decoding: set by lavc, user can override
 569      */
 570     int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
 571
 572     /**
 573      * called to release buffers which where allocated with get_buffer.
 574      * a released buffer can be reused in get_buffer()
 575      * pic.data[*] must be set to NULL
 576      * encoding: unused
 577      * decoding: set by lavc, user can override
 578      */
 579     void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
 580
 581     /**
 582      * is 1 if the decoded stream contains b frames, 0 otherwise
 583      * encoding: unused
 584      * decoding: set by lavc
 585      */
 586     int has_b_frames;
 587
 588     int block_align; /* used by some WAV based audio codecs */
 589
 590     int parse_only; /* decoding only: if true, only parsing is done
 591                        (function avcodec_parse_frame()). The frame
 592                        data is returned. Only MPEG codecs support this now. */
 593
 594     /**
 595      * 0-> h263 quant 1-> mpeg quant
 596      * encoding: set by user.
 597      * decoding: unused
 598      */
 599     int mpeg_quant;
 600
 601     /**
 602      * pass1 encoding statistics output buffer
 603      * encoding: set by lavc
 604      * decoding: unused
 605      */
 606     char *stats_out; /* encoding statistics output buffer */
 607
 608     /**
 609      * pass2 encoding statistics input buffer.
 610      * concatenated stuff from stats_out of pass1 should be placed here
 611      * encoding: allocated/set/freed by user
 612      * decoding: unused
 613      */
 614     char *stats_in;
 615
 616     /**
 617      * ratecontrol qmin qmax limiting method
 618      * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
 619      * encoding: set by user.
 620      * decoding: unused
 621      */
 622     float rc_qsquish;
 623
 624     float rc_qmod_amp;
 625     int rc_qmod_freq;
 626
 627     /**
 628      * ratecontrol override, see RcOverride
 629      * encoding: allocated/set/freed by user.
 630      * decoding: unused
 631      */
 632     RcOverride *rc_override;
 633     int rc_override_count;
 634
 635     /**
 636      * rate control equation
 637      * encoding: set by user
 638      * decoding: unused
 639      */
 640     char *rc_eq;
 641
 642     /**
 643      * maximum bitrate
 644      * encoding: set by user.
 645      * decoding: unused
 646      */
 647     int rc_max_rate;
 648
 649     /**
 650      * minimum bitrate
 651      * encoding: set by user.
 652      * decoding: unused
 653      */
 654     int rc_min_rate;
 655
 656     /**
 657      * decoder bitstream buffer size
 658      * encoding: set by user.
 659      * decoding: unused
 660      */
 661     int rc_buffer_size;
 662     float rc_buffer_aggressivity;
 663
 664     /**
 665      * qscale factor between p and i frames
 666      * encoding: set by user.
 667      * decoding: unused
 668      */
 669     float i_quant_factor;
 670
 671     /**
 672      * qscale offset between p and i frames
 673      * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
 674      * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
 675      * encoding: set by user.
 676      * decoding: unused
 677      */
 678     float i_quant_offset;
 679
 680     /**
 681      * initial complexity for pass1 ratecontrol
 682      * encoding: set by user.
 683      * decoding: unused
 684      */
 685     float rc_initial_cplx;
 686
 687     /**
 688      * dct algorithm, see FF_DCT_* below
 689      * encoding: set by user
 690      * decoding: unused
 691      */
 692     int dct_algo;
 693 #define FF_DCT_AUTO    0
 694 #define FF_DCT_FASTINT 1
 695 #define FF_DCT_INT     2
 696 #define FF_DCT_MMX     3
 697 #define FF_DCT_MLIB    4
 698 #define FF_DCT_ALTIVEC 5
 699
 700     /**
 701      * luminance masking (0-> disabled)
 702      * encoding: set by user
 703      * decoding: unused
 704      */
 705     float lumi_masking;
 706
 707     /**
 708      * temporary complexity masking (0-> disabled)
 709      * encoding: set by user
 710      * decoding: unused
 711      */
 712     float temporal_cplx_masking;
 713
 714     /**
 715      * spatial complexity masking (0-> disabled)
 716      * encoding: set by user
 717      * decoding: unused
 718      */
 719     float spatial_cplx_masking;
 720
 721     /**
 722      * p block masking (0-> disabled)
 723      * encoding: set by user
 724      * decoding: unused
 725      */
 726     float p_masking;
 727
 728     /**
 729      * darkness masking (0-> disabled)
 730      * encoding: set by user
 731      * decoding: unused
 732      */
 733     float dark_masking;
 734
 735     /**
 736      * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
 737      * this is used to workaround some encoder bugs
 738      * encoding: unused
 739      * decoding: set by user, will be converted to upper case by lavc during init
 740      */
 741     int fourcc;
 742
 743     /**
 744      * idct algorithm, see FF_IDCT_* below
 745      * encoding: set by user
 746      * decoding: set by user
 747      */
 748     int idct_algo;
 749 #define FF_IDCT_AUTO         0
 750 #define FF_IDCT_INT          1
 751 #define FF_IDCT_SIMPLE       2
 752 #define FF_IDCT_SIMPLEMMX    3
 753 #define FF_IDCT_LIBMPEG2MMX  4
 754 #define FF_IDCT_PS2          5
 755 #define FF_IDCT_MLIB         6
 756 #define FF_IDCT_ARM          7
 757 #define FF_IDCT_ALTIVEC      8
 758
 759     /**
 760      * slice count
 761      * encoding: set by lavc
 762      * decoding: set by user (or 0)
 763      */
 764     int slice_count;
 765     /**
 766      * slice offsets in the frame in bytes
 767      * encoding: set/allocated by lavc
 768      * decoding: set/allocated by user (or NULL)
 769      */
 770     int *slice_offset;
 771
 772     /**
 773      * error concealment flags
 774      * encoding: unused
 775      * decoding: set by user
 776      */
 777     int error_concealment;
 778 #define FF_EC_GUESS_MVS   1
 779 #define FF_EC_DEBLOCK     2
 780
 781     /**
 782      * dsp_mask could be used to disable unwanted
 783      * CPU features (i.e. MMX, SSE. ...)
 784      */
 785      unsigned dsp_mask;
 786
 787     /**
 788      * bits per sample/pixel from the demuxer (needed for huffyuv)
 789      * encoding: set by lavc
 790      * decoding: set by user
 791      */
 792      int bits_per_sample;
 793
 794     /**
 795      * prediction method (needed for huffyuv)
 796      * encoding: set by user
 797      * decoding: unused
 798      */
 799      int prediction_method;
 800 #define FF_PRED_LEFT   0
 801 #define FF_PRED_PLANE  1
 802 #define FF_PRED_MEDIAN 2
 803
 804     /**
 805      * aspect ratio. (0 if unknown)
 806      * encoding: set by user.
 807      * decoding: set by lavc.
 808      */
 809     float aspect_ratio;
 810
 811     /**
 812      * the picture in the bitstream
 813      * encoding: set by lavc
 814      * decoding: set by lavc
 815      */
 816     AVFrame *coded_frame;
 817
 818     /**
 819      * debug
 820      * encoding: set by user.
 821      * decoding: set by user.
 822      */
 823     int debug;
 824 #define FF_DEBUG_PICT_INFO 1
 825 #define FF_DEBUG_RC        2
 826 #define FF_DEBUG_BITSTREAM 4
 827 #define FF_DEBUG_MB_TYPE   8
 828 #define FF_DEBUG_QP        16
 829 #define FF_DEBUG_MV        32
 830 #define FF_DEBUG_VIS_MV    64
 831 #define FF_DEBUG_SKIP      128
 832
 833     /**
 834      * error
 835      * encoding: set by lavc if flags&CODEC_FLAG_PSNR
 836      * decoding: unused
 837      */
 838     uint64_t error[4];
 839
 840     /**
 841      * minimum MB quantizer
 842      * encoding: set by user.
 843      * decoding: unused
 844      */
 845     int mb_qmin;
 846
 847     /**
 848      * maximum MB quantizer
 849      * encoding: set by user.
 850      * decoding: unused
 851      */
 852     int mb_qmax;
 853 } AVCodecContext;
 854
 855 typedef struct AVCodec {
 856     const char *name;
 857     int type;
 858     int id;
 859     int priv_data_size;
 860     int (*init)(AVCodecContext *);
 861     int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
 862     int (*close)(AVCodecContext *);
 863     int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
 864                   UINT8 *buf, int buf_size);
 865     int capabilities;
 866     struct AVCodec *next;
 867 } AVCodec;
 868
 869 /**
 870  * four components are given, that's all.
 871  * the last component is alpha
 872  */
 873 typedef struct AVPicture {
 874     UINT8 *data[4];
 875     int linesize[4];
 876 } AVPicture;
 877
 878 extern AVCodec ac3_encoder;
 879 extern AVCodec mp2_encoder;
 880 extern AVCodec mp3lame_encoder;
 881 extern AVCodec oggvorbis_encoder;
 882 extern AVCodec mpeg1video_encoder;
 883 extern AVCodec h263_encoder;
 884 extern AVCodec h263p_encoder;
 885 extern AVCodec rv10_encoder;
 886 extern AVCodec mjpeg_encoder;
 887 extern AVCodec mpeg4_encoder;
 888 extern AVCodec msmpeg4v1_encoder;
 889 extern AVCodec msmpeg4v2_encoder;
 890 extern AVCodec msmpeg4v3_encoder;
 891 extern AVCodec wmv1_encoder;
 892 extern AVCodec wmv2_encoder;
 893 extern AVCodec huffyuv_encoder;
 894
 895 extern AVCodec h263_decoder;
 896 extern AVCodec mpeg4_decoder;
 897 extern AVCodec msmpeg4v1_decoder;
 898 extern AVCodec msmpeg4v2_decoder;
 899 extern AVCodec msmpeg4v3_decoder;
 900 extern AVCodec wmv1_decoder;
 901 extern AVCodec wmv2_decoder;
 902 extern AVCodec mpeg_decoder;
 903 extern AVCodec h263i_decoder;
 904 extern AVCodec rv10_decoder;
 905 extern AVCodec svq1_decoder;
 906 extern AVCodec dvvideo_decoder;
 907 extern AVCodec dvaudio_decoder;
 908 extern AVCodec wmav1_decoder;
 909 extern AVCodec wmav2_decoder;
 910 extern AVCodec mjpeg_decoder;
 911 extern AVCodec mjpegb_decoder;
 912 extern AVCodec mp2_decoder;
 913 extern AVCodec mp3_decoder;
 914 extern AVCodec mace3_decoder;
 915 extern AVCodec mace6_decoder;
 916 extern AVCodec huffyuv_decoder;
 917 extern AVCodec oggvorbis_decoder;
 918
 919 /* pcm codecs */
 920 #define PCM_CODEC(id, name) \
 921 extern AVCodec name ## _decoder; \
 922 extern AVCodec name ## _encoder
 923
 924 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
 925 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
 926 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
 927 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
 928 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
 929 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
 930 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
 931 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
 932
 933 /* adpcm codecs */
 934
 935 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
 936 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
 937 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
 938
 939 #undef PCM_CODEC
 940
 941 /* dummy raw video codec */
 942 extern AVCodec rawvideo_codec;
 943
 944 /* the following codecs use external GPL libs */
 945 extern AVCodec ac3_decoder;
 946
 947 /* resample.c */
 948
 949 struct ReSampleContext;
 950
 951 typedef struct ReSampleContext ReSampleContext;
 952
 953 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
 954                                      int output_rate, int input_rate);
 955 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
 956 void audio_resample_close(ReSampleContext *s);
 957
 958 /* YUV420 format is assumed ! */
 959
 960 struct ImgReSampleContext;
 961
 962 typedef struct ImgReSampleContext ImgReSampleContext;
 963
 964 ImgReSampleContext *img_resample_init(int output_width, int output_height,
 965                                       int input_width, int input_height);
 966
 967 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
 968                                       int iwidth, int iheight,
 969                                       int topBand, int bottomBand,
 970                                       int leftBand, int rightBand);
 971
 972 void img_resample(ImgReSampleContext *s,
 973                   AVPicture *output, AVPicture *input);
 974
 975 void img_resample_close(ImgReSampleContext *s);
 976
 977 void avpicture_fill(AVPicture *picture, UINT8 *ptr,
 978                     int pix_fmt, int width, int height);
 979 int avpicture_get_size(int pix_fmt, int width, int height);
 980 void avcodec_get_chroma_sub_sample(int fmt, int *h_shift, int *v_shift);
 981
 982 /* convert among pixel formats */
 983 int img_convert(AVPicture *dst, int dst_pix_fmt,
 984                 AVPicture *src, int pix_fmt,
 985                 int width, int height);
 986
 987 /* deinterlace a picture */
 988 int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
 989                           int pix_fmt, int width, int height);
 990
 991 /* external high level API */
 992
 993 extern AVCodec *first_avcodec;
 994
 995 /* returns LIBAVCODEC_VERSION_INT constant */
 996 unsigned avcodec_version(void);
 997 /* returns LIBAVCODEC_BUILD constant */
 998 unsigned avcodec_build(void);
 999 void avcodec_init(void);
1000
1001 void avcodec_set_bit_exact(void);
1002
1003 void register_avcodec(AVCodec *format);
1004 AVCodec *avcodec_find_encoder(enum CodecID id);
1005 AVCodec *avcodec_find_encoder_by_name(const char *name);
1006 AVCodec *avcodec_find_decoder(enum CodecID id);
1007 AVCodec *avcodec_find_decoder_by_name(const char *name);
1008 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1009
1010 void avcodec_get_context_defaults(AVCodecContext *s);
1011 AVCodecContext *avcodec_alloc_context(void);
1012 AVFrame *avcodec_alloc_frame(void);
1013
1014 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1015 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1016
1017 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1018 int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
1019                          int *frame_size_ptr,
1020                          UINT8 *buf, int buf_size);
1021 int avcodec_decode_video(AVCodecContext *avctx,
1022                                                  AVFrame *picture,
1023                          int *got_picture_ptr,
1024                          UINT8 *buf, int buf_size);
1025 int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
1026                         int *data_size_ptr,
1027                         UINT8 *buf, int buf_size);
1028 int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1029                          const short *samples);
1030 int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1031                          const AVFrame *pict);
1032
1033 int avcodec_close(AVCodecContext *avctx);
1034
1035 void avcodec_register_all(void);
1036
1037 void avcodec_flush_buffers(AVCodecContext *avctx);
1038
1039 /**
1040  * Interface for 0.5.0 version
1041  *
1042  * do not even think about it's usage for this moment
1043  */
1044
1045 typedef struct {
1046     // compressed size used from given memory buffer
1047     int size;
1048     /// I/P/B frame type
1049     int frame_type;
1050 } avc_enc_result_t;
1051
1052 /**
1053  * Commands
1054  * order can't be changed - once it was defined
1055  */
1056 typedef enum {
1057     // general commands
1058     AVC_OPEN_BY_NAME = 0xACA000,
1059     AVC_OPEN_BY_CODEC_ID,
1060     AVC_OPEN_BY_FOURCC,
1061     AVC_CLOSE,
1062
1063     AVC_FLUSH,
1064     // pin - struct { uint8_t* src, uint_t src_size }
1065     // pout - struct { AVPicture* img, consumed_bytes,
1066     AVC_DECODE,
1067     // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1068     // pout - uint_t used_from_dest_size
1069     AVC_ENCODE,
1070
1071     // query/get video commands
1072     AVC_GET_VERSION = 0xACB000,
1073     AVC_GET_WIDTH,
1074     AVC_GET_HEIGHT,
1075     AVC_GET_DELAY,
1076     AVC_GET_QUANT_TABLE,
1077     // ...
1078
1079     // query/get audio commands
1080     AVC_GET_FRAME_SIZE = 0xABC000,
1081
1082     // maybe define some simple structure which
1083     // might be passed to the user - but they can't
1084     // contain any codec specific parts and these
1085     // calls are usualy necessary only few times
1086
1087     // set video commands
1088     AVC_SET_WIDTH = 0xACD000,
1089     AVC_SET_HEIGHT,
1090
1091     // set video encoding commands
1092     AVC_SET_FRAME_RATE = 0xACD800,
1093     AVC_SET_QUALITY,
1094     AVC_SET_HURRY_UP,
1095
1096     // set audio commands
1097     AVC_SET_SAMPLE_RATE = 0xACE000,
1098     AVC_SET_CHANNELS,
1099
1100 } avc_cmd_t;
1101
1102 /**
1103  * \param handle  allocated private structure by libavcodec
1104  *                for initialization pass NULL - will be returned pout
1105  *                user is supposed to know nothing about its structure
1106  * \param cmd     type of operation to be performed
1107  * \param pint    input parameter
1108  * \param pout    output parameter
1109  *
1110  * \returns  command status - eventually for query command it might return
1111  * integer resulting value
1112  */
1113 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1114
1115 /* memory */
1116 void *av_malloc(unsigned int size);
1117 void *av_mallocz(unsigned int size);
1118 void av_free(void *ptr);
1119 void __av_freep(void **ptr);
1120 #define av_freep(p) __av_freep((void **)(p))
1121 /* for static data only */
1122 /* call av_free_static to release all staticaly allocated tables */
1123 void av_free_static();
1124 void *__av_mallocz_static(void** location, unsigned int size);
1125 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1126
1127 #endif /* AVCODEC_H */