| … | |
… | |
| 394 | } |
394 | } |
| 395 | } |
395 | } |
| 396 | OUTPUT: |
396 | OUTPUT: |
| 397 | RETVAL |
397 | RETVAL |
| 398 | |
398 | |
| 399 | SV * |
|
|
| 400 | make_histogram (SV *ar) |
|
|
| 401 | CODE: |
|
|
| 402 | { |
|
|
| 403 | int i; |
|
|
| 404 | AV *av, *result; |
|
|
| 405 | |
|
|
| 406 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
| 407 | croak ("Not an array ref as first argument to make_histogram"); |
|
|
| 408 | |
|
|
| 409 | av = (AV *) SvRV (ar); |
|
|
| 410 | result = newAV (); |
|
|
| 411 | |
|
|
| 412 | for (i = 0; i <= av_len (av); ++i) |
|
|
| 413 | { |
|
|
| 414 | const int HISTSIZE = 64; |
|
|
| 415 | |
|
|
| 416 | int j; |
|
|
| 417 | SV *sv = *av_fetch (av, i, 1); |
|
|
| 418 | STRLEN len; |
|
|
| 419 | char *buf = SvPVbyte (sv, len); |
|
|
| 420 | |
|
|
| 421 | int tmphist[HISTSIZE]; |
|
|
| 422 | float *hist; |
|
|
| 423 | |
|
|
| 424 | SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
|
|
| 425 | SvPOK_on (histsv); |
|
|
| 426 | SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
|
|
| 427 | hist = (float *)SvPVX (histsv); |
|
|
| 428 | |
|
|
| 429 | Zero (tmphist, sizeof (tmphist), char); |
|
|
| 430 | |
|
|
| 431 | for (j = len; j--; ) |
|
|
| 432 | { |
|
|
| 433 | unsigned int idx |
|
|
| 434 | = ((*buf & 0xc0) >> 2) |
|
|
| 435 | | ((*buf & 0x18) >> 1) |
|
|
| 436 | | (*buf & 0x03); |
|
|
| 437 | |
|
|
| 438 | ++tmphist[idx]; |
|
|
| 439 | ++buf; |
|
|
| 440 | } |
|
|
| 441 | |
|
|
| 442 | for (j = 0; j < HISTSIZE; ++j) |
|
|
| 443 | hist[j] = (float)tmphist[j] / (len + 1e-30); |
|
|
| 444 | |
|
|
| 445 | av_push (result, histsv); |
|
|
| 446 | } |
|
|
| 447 | |
|
|
| 448 | RETVAL = newRV_noinc ((SV *)result); |
|
|
| 449 | } |
|
|
| 450 | OUTPUT: |
|
|
| 451 | RETVAL |
|
|
| 452 | |
|
|
| 453 | ############################################################################# |
399 | ############################################################################# |
| 454 | |
400 | |
| 455 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
401 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
| 456 | |
402 | |
| 457 | void |
403 | void |
| … | |
… | |
| 580 | } |
526 | } |
| 581 | } |
527 | } |
| 582 | OUTPUT: |
528 | OUTPUT: |
| 583 | RETVAL |
529 | RETVAL |
| 584 | |
530 | |
|
|
531 | ############################################################################# |
| 585 | |
532 | |
|
|
533 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
| 586 | |
534 | |
|
|
535 | SV * |
|
|
536 | make_histograms (SV *ar) |
|
|
537 | CODE: |
|
|
538 | { |
|
|
539 | int i; |
|
|
540 | AV *av, *result; |
|
|
541 | |
|
|
542 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
543 | croak ("Not an array ref as first argument to make_histogram"); |
|
|
544 | |
|
|
545 | av = (AV *) SvRV (ar); |
|
|
546 | result = newAV (); |
|
|
547 | |
|
|
548 | for (i = 0; i <= av_len (av); ++i) |
|
|
549 | { |
|
|
550 | const int HISTSIZE = 64; |
|
|
551 | |
|
|
552 | int j; |
|
|
553 | SV *sv = *av_fetch (av, i, 1); |
|
|
554 | STRLEN len; |
|
|
555 | char *buf = SvPVbyte (sv, len); |
|
|
556 | |
|
|
557 | int tmphist[HISTSIZE]; |
|
|
558 | float *hist; |
|
|
559 | |
|
|
560 | SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
|
|
561 | SvPOK_on (histsv); |
|
|
562 | SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
|
|
563 | hist = (float *)SvPVX (histsv); |
|
|
564 | |
|
|
565 | Zero (tmphist, sizeof (tmphist), char); |
|
|
566 | |
|
|
567 | for (j = len; j--; ) |
|
|
568 | { |
|
|
569 | unsigned int idx |
|
|
570 | = ((*buf & 0xc0) >> 2) |
|
|
571 | | ((*buf & 0x18) >> 1) |
|
|
572 | | (*buf & 0x03); |
|
|
573 | |
|
|
574 | ++tmphist[idx]; |
|
|
575 | ++buf; |
|
|
576 | } |
|
|
577 | |
|
|
578 | for (j = 0; j < HISTSIZE; ++j) |
|
|
579 | hist[j] = (float)tmphist[j] / (len + 1e-30); |
|
|
580 | |
|
|
581 | av_push (result, histsv); |
|
|
582 | } |
|
|
583 | |
|
|
584 | RETVAL = newRV_noinc ((SV *)result); |
|
|
585 | } |
|
|
586 | OUTPUT: |
|
|
587 | RETVAL |
|
|
588 | |
|
|
589 | |
