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       4653
   9 #define LIBAVCODEC_BUILD_STR   "4653"
  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_YUV420P,
  64     PIX_FMT_YUV422,
  65     PIX_FMT_RGB24,     /* 3 bytes, R is first */
  66     PIX_FMT_BGR24,     /* 3 bytes, B is first */
  67     PIX_FMT_YUV422P,
  68     PIX_FMT_YUV444P,
  69     PIX_FMT_RGBA32,    /* always stored in cpu endianness */
  70     PIX_FMT_YUV410P,
  71     PIX_FMT_YUV411P,
  72     PIX_FMT_RGB565,    /* always stored in cpu endianness */
  73     PIX_FMT_RGB555,    /* always stored in cpu endianness, most significant bit to 1 */
  74     PIX_FMT_GRAY8,
  75     PIX_FMT_MONOWHITE, /* 0 is white */
  76     PIX_FMT_MONOBLACK, /* 0 is black */
  77     PIX_FMT_NB,
  78 };
  79
  80 /* currently unused, may be used if 24/32 bits samples ever supported */
  81 enum SampleFormat {
  82     SAMPLE_FMT_S16 = 0,         /* signed 16 bits */
  83 };
  84
  85 /* in bytes */
  86 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
  87
  88 /**
  89  * Required number of zero bytes at the end of the input bitstream for decoding.
  90  * to avoid overreading (and possibly segfaulting)
  91  */
  92 #define FF_INPUT_BUFFER_PADDING_SIZE 8
  93
  94 /* motion estimation type, EPZS by default */
  95 enum Motion_Est_ID {
  96     ME_ZERO = 1,
  97     ME_FULL,
  98     ME_LOG,
  99     ME_PHODS,
 100     ME_EPZS,
 101     ME_X1
 102 };
 103
 104 typedef struct RcOverride{
 105     int start_frame;
 106     int end_frame;
 107     int qscale; // if this is 0 then quality_factor will be used instead
 108     float quality_factor;
 109 } RcOverride;
 110
 111 /* only for ME compatiblity with old apps */
 112 extern int motion_estimation_method;
 113
 114 /* ME algos sorted by quality */
 115 static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
 116                                        ME_X1, ME_EPZS, ME_FULL };
 117
 118
 119 #define FF_MAX_B_FRAMES 8
 120
 121 /* encoding support
 122    these flags can be passed in AVCodecContext.flags before initing
 123    Note: note not everything is supported yet
 124 */
 125
 126 #define CODEC_FLAG_HQ     0x0001  /* brute force MB-type decission mode (slow) */
 127 #define CODEC_FLAG_QSCALE 0x0002  /* use fixed qscale */
 128 #define CODEC_FLAG_4MV    0x0004  /* 4 MV per MB allowed */
 129 #define CODEC_FLAG_QPEL   0x0010  /* use qpel MC */
 130 #define CODEC_FLAG_GMC    0x0020  /* use GMC */
 131 #define CODEC_FLAG_PART   0x0080  /* use data partitioning */
 132 /* parent program gurantees that the input for b-frame containing streams is not written to
 133    for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
 134 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
 135 #define CODEC_FLAG_PASS1 0x0200   /* use internal 2pass ratecontrol in first  pass mode */
 136 #define CODEC_FLAG_PASS2 0x0400   /* use internal 2pass ratecontrol in second pass mode */
 137 #define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
 138 #define CODEC_FLAG_GRAY  0x2000   /* only decode/encode grayscale */
 139 #define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
 140 #define CODEC_FLAG_PSNR           0x8000 /* error[?] variables will be set during encoding */
 141 #define CODEC_FLAG_TRUNCATED  0x00010000 /* input bitstream might be truncated at a random location instead
 142                                             of only at frame boundaries */
 143 #define CODEC_FLAG_NORMALIZE_AQP  0x00020000 /* normalize adaptive quantization */
 144 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
 145 #define CODEC_FLAG_LOW_DELAY      0x00080000 /* force low delay / will fail on b frames */
 146 #define CODEC_FLAG_ALT_SCAN       0x00100000 /* use alternate scan */
 147 #define CODEC_FLAG_TRELLIS_QUANT  0x00200000 /* use trellis quantization */
 148 #define CODEC_FLAG_GLOBAL_HEADER  0x00400000 /* place global headers in extradata instead of every keyframe */
 149
 150 /* codec capabilities */
 151
 152 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
 153 #define CODEC_CAP_DR1             0x0002 /* direct rendering method 1 */
 154 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
 155    used */
 156 #define CODEC_CAP_PARSE_ONLY      0x0004
 157 #define CODEC_CAP_TRUNCATED       0x0008
 158
 159 #define FRAME_RATE_BASE 10000
 160
 161 #define FF_COMMON_FRAME \
 162     uint8_t *data[4];\
 163     int linesize[4];\
 164     /**\
 165      * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
 166      * this isnt used by lavc unless the default get/release_buffer() is used\
 167      * encoding: \
 168      * decoding: \
 169      */\
 170     uint8_t *base[4];\
 171     /**\
 172      * 1 -> keyframe, 0-> not\
 173      * encoding: set by lavc\
 174      * decoding: set by lavc\
 175      */\
 176     int key_frame;\
 177 \
 178     /**\
 179      * picture type of the frame, see ?_TYPE below\
 180      * encoding: set by lavc for coded_picture (and set by user for input)\
 181      * decoding: set by lavc\
 182      */\
 183     int pict_type;\
 184 \
 185     /**\
 186      * presentation timestamp in micro seconds (time when frame should be shown to user)\
 187      * if 0 then the frame_rate will be used as reference\
 188      * encoding: MUST be set by user\
 189      * decoding: set by lavc\
 190      */\
 191     long long int pts;\
 192 \
 193     /**\
 194      * picture number in bitstream order.\
 195      * encoding: set by\
 196      * decoding: set by lavc\
 197      */\
 198     int coded_picture_number;\
 199     /**\
 200      * encoding: set by\
 201      * decoding: set by lavc\
 202      * picture number in display order.\
 203      */\
 204     int display_picture_number;\
 205 \
 206     /**\
 207      * quality (between 1 (good) and 31 (bad)) \
 208      * encoding: set by lavc for coded_picture (and set by user for input)\
 209      * decoding: set by lavc\
 210      */\
 211     float quality; \
 212 \
 213     /**\
 214      * buffer age (1->was last buffer and dint change, 2->..., ...).\
 215      * set to something large if the buffer has not been used yet \
 216      * encoding: unused\
 217      * decoding: MUST be set by get_buffer()\
 218      */\
 219     int age;\
 220 \
 221     /**\
 222      * is this picture used as reference\
 223      * encoding: unused\
 224      * decoding: set by lavc (before get_buffer() call))\
 225      */\
 226     int reference;\
 227 \
 228     /**\
 229      * QP table\
 230      * encoding: unused\
 231      * decoding: set by lavc\
 232      */\
 233     int8_t *qscale_table;\
 234     /**\
 235      * QP store stride\
 236      * encoding: unused\
 237      * decoding: set by lavc\
 238      */\
 239     int qstride;\
 240 \
 241     /**\
 242      * mbskip_table[mb]>=1 if MB didnt change\
 243      * stride= mb_width = (width+15)>>4\
 244      * encoding: unused\
 245      * decoding: set by lavc\
 246      */\
 247     uint8_t *mbskip_table;\
 248 \
 249     /**\
 250      * for some private data of the user\
 251      * encoding: unused\
 252      * decoding: set by user\
 253      */\
 254     void *opaque;\
 255 \
 256     /**\
 257      * error\
 258      * encoding: set by lavc if flags&CODEC_FLAG_PSNR\
 259      * decoding: unused\
 260      */\
 261     uint64_t error[4];\
 262 \
 263     /**\
 264      * type of the buffer (to keep track of who has to dealloc data[*])\
 265      * encoding: set by the one who allocs it\
 266      * decoding: set by the one who allocs it\
 267      * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
 268      */\
 269     int type;\
 270
 271 #define FF_BUFFER_TYPE_INTERNAL 1
 272 #define FF_BUFFER_TYPE_USER     2 // Direct rendering buffers
 273 #define FF_BUFFER_TYPE_SHARED   4 // input frame for encoding(wont be dealloced)
 274
 275
 276 #define FF_I_TYPE 1 // Intra
 277 #define FF_P_TYPE 2 // Predicted
 278 #define FF_B_TYPE 3 // Bi-dir predicted
 279 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
 280
 281 typedef struct AVFrame {
 282     FF_COMMON_FRAME
 283 } AVFrame;
 284
 285 typedef struct AVCodecContext {
 286     /**
 287      * the average bitrate
 288      * encoding: set by user. unused for constant quantizer encoding
 289      * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
 290      */
 291     int bit_rate;
 292
 293     /**
 294      * number of bits the bitstream is allowed to diverge from the reference
 295      *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
 296      * encoding: set by user. unused for constant quantizer encoding
 297      * decoding: unused
 298      */
 299     int bit_rate_tolerance;
 300
 301     /**
 302      * CODEC_FLAG_*
 303      * encoding: set by user.
 304      * decoding: set by user.
 305      */
 306     int flags;
 307
 308     /**
 309      * some codecs needs additionnal format info. It is stored here
 310      * encoding: set by user.
 311      * decoding: set by lavc. (FIXME is this ok?)
 312      */
 313     int sub_id;
 314
 315     /**
 316      * motion estimation algorithm used for video coding
 317      * encoding: MUST be set by user.
 318      * decoding: unused
 319      */
 320     int me_method;
 321
 322     /**
 323      * some codecs need / can use extra-data like huffman tables
 324      * mjpeg: huffman tables
 325      * rv10: additional flags
 326      * mpeg4: global headers (they can be in the bitstream or here)
 327      * encoding: set/allocated/freed by lavc.
 328      * decoding: set/allocated/freed by user.
 329      */
 330     void *extradata;
 331     int extradata_size;
 332
 333     /* video only */
 334     /**
 335      * frames per sec multiplied by FRAME_RATE_BASE
 336      * for variable fps this is the precission, so if the timestamps
 337      * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
 338      * encoding: MUST be set by user
 339      * decoding: set by lavc. 0 or the frame_rate if available
 340      */
 341     int frame_rate;
 342
 343     /**
 344      * encoding: MUST be set by user.
 345      * decoding: set by user, some codecs might override / change it during playback
 346      */
 347     int width, height;
 348
 349 #define FF_ASPECT_SQUARE 1
 350 #define FF_ASPECT_4_3_625 2
 351 #define FF_ASPECT_4_3_525 3
 352 #define FF_ASPECT_16_9_625 4
 353 #define FF_ASPECT_16_9_525 5
 354 #define FF_ASPECT_EXTENDED 15
 355
 356     /**
 357      * the number of pictures in a group of pitures, or 0 for intra_only
 358      * encoding: set by user.
 359      * decoding: unused
 360      */
 361     int gop_size;
 362
 363     /**
 364      * pixel format, see PIX_FMT_xxx
 365      * encoding: unused
 366      * decoding: set by lavc.
 367      */
 368     enum PixelFormat pix_fmt;
 369
 370     int repeat_pict; /* when decoding, this signal how much the picture */
 371                      /* must be delayed.                                */
 372                      /* extra_delay = (repeat_pict / 2) * (1/fps)       */
 373
 374     /**
 375      * if non NULL, 'draw_horiz_band' is called by the libavcodec
 376      * decoder to draw an horizontal band. It improve cache usage. Not
 377      * all codecs can do that. You must check the codec capabilities
 378      * before
 379      * encoding: unused
 380      * decoding: set by user.
 381      */
 382     void (*draw_horiz_band)(struct AVCodecContext *s,
 383                             UINT8 **src_ptr, int linesize,
 384                             int y, int width, int height);
 385
 386     /* audio only */
 387     int sample_rate; /* samples per sec */
 388     int channels;
 389     int sample_fmt;  /* sample format, currenly unused */
 390
 391     /* the following data should not be initialized */
 392     int frame_size;     /* in samples, initialized when calling 'init' */
 393     int frame_number;   /* audio or video frame number */
 394     int real_pict_num;  /* returns the real picture number of
 395                            previous encoded frame */
 396
 397     /**
 398      * number of frames the decoded output will be delayed relative to
 399      * the encoded input
 400      * encoding: set by lavc.
 401      * decoding: unused
 402      */
 403     int delay;
 404
 405     /* encoding parameters */
 406     float qcompress;  /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
 407     float qblur;      /* amount of qscale smoothing over time (0.0-1.0) */
 408
 409     /**
 410      * minimum quantizer
 411      * encoding: set by user.
 412      * decoding: unused
 413      */
 414     int qmin;
 415
 416     /**
 417      * maximum quantizer
 418      * encoding: set by user.
 419      * decoding: unused
 420      */
 421     int qmax;
 422
 423     /**
 424      * maximum quantizer difference etween frames
 425      * encoding: set by user.
 426      * decoding: unused
 427      */
 428     int max_qdiff;
 429
 430     /**
 431      * maximum number of b frames between non b frames
 432      * note: the output will be delayed by max_b_frames+1 relative to the input
 433      * encoding: set by user.
 434      * decoding: unused
 435      */
 436     int max_b_frames;
 437
 438     /**
 439      * qscale factor between ip and b frames
 440      * encoding: set by user.
 441      * decoding: unused
 442      */
 443     float b_quant_factor;
 444
 445     /** obsolete FIXME remove */
 446     int rc_strategy;
 447     int b_frame_strategy;
 448
 449     /**
 450      * encoding: unused
 451      * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
 452      */
 453     int hurry_up;
 454
 455     struct AVCodec *codec;
 456
 457     void *priv_data;
 458
 459     /* The following data is for RTP friendly coding */
 460     /* By now only H.263/H.263+/MPEG4 coder honours this   */
 461     int rtp_mode;   /* 1 for activate RTP friendly-mode           */
 462                     /* highers numbers represent more error-prone */
 463                     /* enviroments, by now just "1" exist         */
 464
 465     int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
 466                             /* do it's best to deliver a chunk with size    */
 467                             /* below rtp_payload_size, the chunk will start */
 468                             /* with a start code on some codecs like H.263  */
 469                             /* This doesn't take account of any particular  */
 470                             /* headers inside the transmited RTP payload    */
 471
 472
 473     /* The RTP callcack: This function is called  */
 474     /* every time the encoder as a packet to send */
 475     /* Depends on the encoder if the data starts  */
 476     /* with a Start Code (it should) H.263 does   */
 477     void (*rtp_callback)(void *data, int size, int packet_number);
 478
 479     /* statistics, used for 2-pass encoding */
 480     int mv_bits;
 481     int header_bits;
 482     int i_tex_bits;
 483     int p_tex_bits;
 484     int i_count;
 485     int p_count;
 486     int skip_count;
 487     int misc_bits;
 488
 489     /**
 490      * number of bits used for the previously encoded frame
 491      * encoding: set by lavc
 492      * decoding: - for audio - bits_per_sample
 493      */
 494     int frame_bits;
 495
 496     /**
 497      * private data of the user, can be used to carry app specific stuff
 498      * encoding: set by user
 499      * decoding: set by user
 500      */
 501     void *opaque;
 502
 503     char codec_name[32];
 504     enum CodecType codec_type; /* see CODEC_TYPE_xxx */
 505     enum CodecID codec_id; /* see CODEC_ID_xxx */
 506     unsigned int codec_tag;  /* codec tag, only used if unknown codec */
 507
 508     /**
 509      * workaround bugs in encoders which sometimes cannot be detected automatically
 510      * encoding: unused
 511      * decoding: set by user
 512      */
 513     int workaround_bugs;
 514 #define FF_BUG_AUTODETECT       1  //autodetection
 515 #define FF_BUG_OLD_MSMPEG4      2
 516 #define FF_BUG_XVID_ILACE       4
 517 #define FF_BUG_UMP4             8
 518 #define FF_BUG_NO_PADDING       16
 519 #define FF_BUG_AC_VLC           32
 520 #define FF_BUG_QPEL_CHROMA      64
 521 #define FF_BUG_STD_QPEL         128
 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    0x00000040
 831 #define FF_DEBUG_SKIP      0x00000080
 832 #define FF_DEBUG_STARTCODE 0x00000100
 833 #define FF_DEBUG_PTS       0x00000200
 834
 835     /**
 836      * error
 837      * encoding: set by lavc if flags&CODEC_FLAG_PSNR
 838      * decoding: unused
 839      */
 840     uint64_t error[4];
 841
 842     /**
 843      * minimum MB quantizer
 844      * encoding: set by user.
 845      * decoding: unused
 846      */
 847     int mb_qmin;
 848
 849     /**
 850      * maximum MB quantizer
 851      * encoding: set by user.
 852      * decoding: unused
 853      */
 854     int mb_qmax;
 855
 856     /**
 857      * motion estimation compare function
 858      * encoding: set by user.
 859      * decoding: unused
 860      */
 861     int me_cmp;
 862     /**
 863      * subpixel motion estimation compare function
 864      * encoding: set by user.
 865      * decoding: unused
 866      */
 867     int me_sub_cmp;
 868     /**
 869      * macroblock compare function (not supported yet)
 870      * encoding: set by user.
 871      * decoding: unused
 872      */
 873     int mb_cmp;
 874 #define FF_CMP_SAD  0
 875 #define FF_CMP_SSE  1
 876 #define FF_CMP_SATD 2
 877 #define FF_CMP_DCT  3
 878 #define FF_CMP_PSNR 4
 879 #define FF_CMP_BIT  5
 880 #define FF_CMP_RD   6
 881 #define FF_CMP_ZERO 7
 882 #define FF_CMP_CHROMA 256
 883
 884     /**
 885      * ME diamond size & shape
 886      * encoding: set by user.
 887      * decoding: unused
 888      */
 889     int dia_size;
 890
 891     /**
 892      * amount of previous MV predictors (2a+1 x 2a+1 square)
 893      * encoding: set by user.
 894      * decoding: unused
 895      */
 896     int last_predictor_count;
 897
 898     /**
 899      * pre pass for motion estimation
 900      * encoding: set by user.
 901      * decoding: unused
 902      */
 903     int pre_me;
 904
 905     /**
 906      * motion estimation pre pass compare function
 907      * encoding: set by user.
 908      * decoding: unused
 909      */
 910     int me_pre_cmp;
 911
 912     /**
 913      * ME pre pass diamond size & shape
 914      * encoding: set by user.
 915      * decoding: unused
 916      */
 917     int pre_dia_size;
 918
 919     /**
 920      * subpel ME quality
 921      * encoding: set by user.
 922      * decoding: unused
 923      */
 924     int me_subpel_quality;
 925
 926 } AVCodecContext;
 927
 928 typedef struct AVCodec {
 929     const char *name;
 930     int type;
 931     int id;
 932     int priv_data_size;
 933     int (*init)(AVCodecContext *);
 934     int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
 935     int (*close)(AVCodecContext *);
 936     int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
 937                   UINT8 *buf, int buf_size);
 938     int capabilities;
 939     struct AVCodec *next;
 940 } AVCodec;
 941
 942 /**
 943  * four components are given, that's all.
 944  * the last component is alpha
 945  */
 946 typedef struct AVPicture {
 947     UINT8 *data[4];
 948     int linesize[4];
 949 } AVPicture;
 950
 951 extern AVCodec ac3_encoder;
 952 extern AVCodec mp2_encoder;
 953 extern AVCodec mp3lame_encoder;
 954 extern AVCodec oggvorbis_encoder;
 955 extern AVCodec mpeg1video_encoder;
 956 extern AVCodec h263_encoder;
 957 extern AVCodec h263p_encoder;
 958 extern AVCodec rv10_encoder;
 959 extern AVCodec mjpeg_encoder;
 960 extern AVCodec mpeg4_encoder;
 961 extern AVCodec msmpeg4v1_encoder;
 962 extern AVCodec msmpeg4v2_encoder;
 963 extern AVCodec msmpeg4v3_encoder;
 964 extern AVCodec wmv1_encoder;
 965 extern AVCodec wmv2_encoder;
 966 extern AVCodec huffyuv_encoder;
 967
 968 extern AVCodec h263_decoder;
 969 extern AVCodec mpeg4_decoder;
 970 extern AVCodec msmpeg4v1_decoder;
 971 extern AVCodec msmpeg4v2_decoder;
 972 extern AVCodec msmpeg4v3_decoder;
 973 extern AVCodec wmv1_decoder;
 974 extern AVCodec wmv2_decoder;
 975 extern AVCodec mpeg_decoder;
 976 extern AVCodec h263i_decoder;
 977 extern AVCodec rv10_decoder;
 978 extern AVCodec svq1_decoder;
 979 extern AVCodec dvvideo_decoder;
 980 extern AVCodec dvaudio_decoder;
 981 extern AVCodec wmav1_decoder;
 982 extern AVCodec wmav2_decoder;
 983 extern AVCodec mjpeg_decoder;
 984 extern AVCodec mjpegb_decoder;
 985 extern AVCodec mp2_decoder;
 986 extern AVCodec mp3_decoder;
 987 extern AVCodec mace3_decoder;
 988 extern AVCodec mace6_decoder;
 989 extern AVCodec huffyuv_decoder;
 990 extern AVCodec oggvorbis_decoder;
 991
 992 /* pcm codecs */
 993 #define PCM_CODEC(id, name) \
 994 extern AVCodec name ## _decoder; \
 995 extern AVCodec name ## _encoder
 996
 997 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
 998 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
 999 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1000 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1001 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1002 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1003 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1004 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1005
1006 /* adpcm codecs */
1007
1008 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1009 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1010 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1011
1012 #undef PCM_CODEC
1013
1014 /* dummy raw video codec */
1015 extern AVCodec rawvideo_codec;
1016
1017 /* the following codecs use external GPL libs */
1018 extern AVCodec ac3_decoder;
1019
1020 /* resample.c */
1021
1022 struct ReSampleContext;
1023
1024 typedef struct ReSampleContext ReSampleContext;
1025
1026 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1027                                      int output_rate, int input_rate);
1028 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1029 void audio_resample_close(ReSampleContext *s);
1030
1031 /* YUV420 format is assumed ! */
1032
1033 struct ImgReSampleContext;
1034
1035 typedef struct ImgReSampleContext ImgReSampleContext;
1036
1037 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1038                                       int input_width, int input_height);
1039
1040 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1041                                       int iwidth, int iheight,
1042                                       int topBand, int bottomBand,
1043                                       int leftBand, int rightBand);
1044
1045 void img_resample(ImgReSampleContext *s,
1046                   AVPicture *output, AVPicture *input);
1047
1048 void img_resample_close(ImgReSampleContext *s);
1049
1050 void avpicture_fill(AVPicture *picture, UINT8 *ptr,
1051                     int pix_fmt, int width, int height);
1052 int avpicture_get_size(int pix_fmt, int width, int height);
1053 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1054 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1055
1056 /* convert among pixel formats */
1057 int img_convert(AVPicture *dst, int dst_pix_fmt,
1058                 AVPicture *src, int pix_fmt,
1059                 int width, int height);
1060
1061 /* deinterlace a picture */
1062 int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
1063                           int pix_fmt, int width, int height);
1064
1065 /* external high level API */
1066
1067 extern AVCodec *first_avcodec;
1068
1069 /* returns LIBAVCODEC_VERSION_INT constant */
1070 unsigned avcodec_version(void);
1071 /* returns LIBAVCODEC_BUILD constant */
1072 unsigned avcodec_build(void);
1073 void avcodec_init(void);
1074
1075 void avcodec_set_bit_exact(void);
1076
1077 void register_avcodec(AVCodec *format);
1078 AVCodec *avcodec_find_encoder(enum CodecID id);
1079 AVCodec *avcodec_find_encoder_by_name(const char *name);
1080 AVCodec *avcodec_find_decoder(enum CodecID id);
1081 AVCodec *avcodec_find_decoder_by_name(const char *name);
1082 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1083
1084 void avcodec_get_context_defaults(AVCodecContext *s);
1085 AVCodecContext *avcodec_alloc_context(void);
1086 AVFrame *avcodec_alloc_frame(void);
1087
1088 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1089 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1090
1091 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1092 int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
1093                          int *frame_size_ptr,
1094                          UINT8 *buf, int buf_size);
1095 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1096                          int *got_picture_ptr,
1097                          UINT8 *buf, int buf_size);
1098 int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
1099                         int *data_size_ptr,
1100                         UINT8 *buf, int buf_size);
1101 int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1102                          const short *samples);
1103 int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1104                          const AVFrame *pict);
1105
1106 int avcodec_close(AVCodecContext *avctx);
1107
1108 void avcodec_register_all(void);
1109
1110 void avcodec_flush_buffers(AVCodecContext *avctx);
1111
1112 typedef struct {
1113     /** options' name with default value*/
1114     const char* name;
1115     /** English text help */
1116     const char* help;
1117     /** type of variable */
1118     int type;
1119 #define FF_CONF_TYPE_BOOL 1     // boolean - true,1,on  (or simply presence)
1120 #define FF_CONF_TYPE_DOUBLE 2   // double
1121 #define FF_CONF_TYPE_INT 3      // integer
1122 #define FF_CONF_TYPE_STRING 4   // string (finished with \0)
1123 #define FF_CONF_TYPE_MASK 0x1f  // mask for types - upper bits are various flags
1124 #define FF_CONF_TYPE_EXPERT 0x20 // flag for expert option
1125 #define FF_CONF_TYPE_FLAG (FF_CONF_TYPE_BOOL | 0x40)
1126 #define FF_CONF_TYPE_RCOVERIDE (FF_CONF_TYPE_STRING | 0x80)
1127     /** where the parsed value should be stored */
1128     void* val;
1129     /** min value  (min == max   ->  no limits) */
1130     double min;
1131     /** maximum value for double/int */
1132     double max;
1133     /** default boo [0,1]l/double/int value */
1134     double defval;
1135     /**
1136      * default string value (with optional semicolon delimited extra option-list
1137      * i.e.   option1;option2;option3
1138      * defval might select other then first argument as default
1139      */
1140     const char* defstr;
1141     /** char* list of supported codecs (i.e. ",msmpeg4,h263," NULL - everything */
1142     const char* supported;
1143 } avc_config_t;
1144
1145 void avcodec_getopt(AVCodecContext* avctx, char* str, avc_config_t** config);
1146
1147 /**
1148  * Interface for 0.5.0 version
1149  *
1150  * do not even think about it's usage for this moment
1151  */
1152
1153 typedef struct {
1154     // compressed size used from given memory buffer
1155     int size;
1156     /// I/P/B frame type
1157     int frame_type;
1158 } avc_enc_result_t;
1159
1160 /**
1161  * Commands
1162  * order can't be changed - once it was defined
1163  */
1164 typedef enum {
1165     // general commands
1166     AVC_OPEN_BY_NAME = 0xACA000,
1167     AVC_OPEN_BY_CODEC_ID,
1168     AVC_OPEN_BY_FOURCC,
1169     AVC_CLOSE,
1170
1171     AVC_FLUSH,
1172     // pin - struct { uint8_t* src, uint_t src_size }
1173     // pout - struct { AVPicture* img, consumed_bytes,
1174     AVC_DECODE,
1175     // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1176     // pout - uint_t used_from_dest_size
1177     AVC_ENCODE,
1178
1179     // query/get video commands
1180     AVC_GET_VERSION = 0xACB000,
1181     AVC_GET_WIDTH,
1182     AVC_GET_HEIGHT,
1183     AVC_GET_DELAY,
1184     AVC_GET_QUANT_TABLE,
1185     // ...
1186
1187     // query/get audio commands
1188     AVC_GET_FRAME_SIZE = 0xABC000,
1189
1190     // maybe define some simple structure which
1191     // might be passed to the user - but they can't
1192     // contain any codec specific parts and these
1193     // calls are usualy necessary only few times
1194
1195     // set video commands
1196     AVC_SET_WIDTH = 0xACD000,
1197     AVC_SET_HEIGHT,
1198
1199     // set video encoding commands
1200     AVC_SET_FRAME_RATE = 0xACD800,
1201     AVC_SET_QUALITY,
1202     AVC_SET_HURRY_UP,
1203
1204     // set audio commands
1205     AVC_SET_SAMPLE_RATE = 0xACE000,
1206     AVC_SET_CHANNELS,
1207
1208 } avc_cmd_t;
1209
1210 /**
1211  * \param handle  allocated private structure by libavcodec
1212  *                for initialization pass NULL - will be returned pout
1213  *                user is supposed to know nothing about its structure
1214  * \param cmd     type of operation to be performed
1215  * \param pint    input parameter
1216  * \param pout    output parameter
1217  *
1218  * \returns  command status - eventually for query command it might return
1219  * integer resulting value
1220  */
1221 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1222
1223 /* memory */
1224 void *av_malloc(unsigned int size);
1225 void *av_mallocz(unsigned int size);
1226 void av_free(void *ptr);
1227 void __av_freep(void **ptr);
1228 #define av_freep(p) __av_freep((void **)(p))
1229 /* for static data only */
1230 /* call av_free_static to release all staticaly allocated tables */
1231 void av_free_static(void);
1232 void *__av_mallocz_static(void** location, unsigned int size);
1233 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1234
1235 #endif /* AVCODEC_H */