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Comparing CV/CV.xs (file contents):
Revision 1.26 by root, Sun Aug 21 02:18:30 2005 UTC vs.
Revision 1.28 by root, Mon Aug 22 00:30:58 2005 UTC

… …
145dealpha_expose (GdkPixbuf *pb) 145dealpha_expose (GdkPixbuf *pb)
146 CODE: 146 CODE:
147{ 147{
148 int w = gdk_pixbuf_get_width (pb); 148 int w = gdk_pixbuf_get_width (pb);
149 int h = gdk_pixbuf_get_height (pb); 149 int h = gdk_pixbuf_get_height (pb);
150 fprintf (stderr, "new %d %d\n", w, h);
151 int bpp = gdk_pixbuf_get_n_channels (pb); 150 int bpp = gdk_pixbuf_get_n_channels (pb);
152 int x, y, i; 151 int x, y, i;
153 guchar *src = gdk_pixbuf_get_pixels (pb), *dst; 152 guchar *src = gdk_pixbuf_get_pixels (pb), *dst;
154 int sstr = gdk_pixbuf_get_rowstride (pb), dstr; 153 int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
155 154
… …
165} 164}
166 OUTPUT: 165 OUTPUT:
167 RETVAL 166 RETVAL
168 167
169GdkPixbuf_noinc * 168GdkPixbuf_noinc *
170transpose (GdkPixbuf *pb) 169rotate (GdkPixbuf *pb, int angle)
171 CODE: 170 CODE:
172{ 171 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
173 int w = gdk_pixbuf_get_width (pb); 172 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
174 int h = gdk_pixbuf_get_height (pb); 173 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
175 int bpp = gdk_pixbuf_get_n_channels (pb); 174 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
176 int x, y, i; 175 : angle);
177 guchar *src = gdk_pixbuf_get_pixels (pb), *dst;
178 int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
179
180 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);
181
182 dst = gdk_pixbuf_get_pixels (RETVAL);
183 dstr = gdk_pixbuf_get_rowstride (RETVAL);
184
185 for (y = 0; y < h; y++)
186 for (x = 0; x < w; x++)
187 for (i = 0; i < bpp; i++)
188 dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];
189}
190 OUTPUT:
191 RETVAL
192
193GdkPixbuf_noinc *
194flop (GdkPixbuf *pb)
195 CODE:
196{
197 int w = gdk_pixbuf_get_width (pb);
198 int h = gdk_pixbuf_get_height (pb);
199 int bpp = gdk_pixbuf_get_n_channels (pb);
200 int x, y, i;
201 guchar *src = gdk_pixbuf_get_pixels (pb), *dst;
202 int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
203
204 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);
205
206 dst = gdk_pixbuf_get_pixels (RETVAL);
207 dstr = gdk_pixbuf_get_rowstride (RETVAL);
208
209 for (y = 0; y < h; y++)
210 for (x = 0; x < w; x++)
211 for (i = 0; i < bpp; i++)
212 dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
213}
214 OUTPUT: 176 OUTPUT:
215 RETVAL 177 RETVAL
216 178
217GdkPixbuf_noinc * 179GdkPixbuf_noinc *
218load_jpeg (SV *path, int thumbnail=0) 180load_jpeg (SV *path, int thumbnail=0)
… …
384 } 346 }
385} 347}
386 OUTPUT: 348 OUTPUT:
387 RETVAL 349 RETVAL
388 350
351#############################################################################
352
353MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
354
355void
356dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
357 CODE:
358{
359 int w = gdk_pixbuf_get_width (pb);
360 int h = gdk_pixbuf_get_height (pb);
361 int x, y, i;
362 guchar *dst;
363 int bpp = gdk_pixbuf_get_n_channels (pb);
364 guchar *src = gdk_pixbuf_get_pixels (pb);
365 int sstr = gdk_pixbuf_get_rowstride (pb);
366
367 a85_init ();
368
369 for (y = 0; y < h; y++)
370 for (x = 0; x < w; x++)
371 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
372 a85_push (fp, src [x * bpp + y * sstr + i]);
373
374 a85_finish (fp);
375}
376
377void
378dump_binary (PerlIO *fp, GdkPixbuf *pb)
379 CODE:
380{
381 int w = gdk_pixbuf_get_width (pb);
382 int h = gdk_pixbuf_get_height (pb);
383 int x, y, i;
384 guchar *dst;
385 int bpp = gdk_pixbuf_get_n_channels (pb);
386 guchar *src = gdk_pixbuf_get_pixels (pb);
387 int sstr = gdk_pixbuf_get_rowstride (pb);
388
389 for (y = 0; y < h; y++)
390 for (x = 0; x < w; x++)
391 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
392 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
393}
394
395#############################################################################
396
397MODULE = Gtk2::CV PACKAGE = Gtk2::CV
398
389SV * 399SV *
390pb_to_p7 (GdkPixbuf *pb) 400pb_to_hv84 (GdkPixbuf *pb)
391 CODE: 401 CODE:
392{ 402{
393 int w = gdk_pixbuf_get_width (pb); 403 int w = gdk_pixbuf_get_width (pb);
394 int h = gdk_pixbuf_get_height (pb); 404 int h = gdk_pixbuf_get_height (pb);
395 int x, y; 405 int x, y;
396 guchar *dst; 406 guchar *dst;
397 int bpp = gdk_pixbuf_get_n_channels (pb); 407 int bpp = gdk_pixbuf_get_n_channels (pb);
398 guchar *src = gdk_pixbuf_get_pixels (pb); 408 guchar *src = gdk_pixbuf_get_pixels (pb);
399 int sstr = gdk_pixbuf_get_rowstride (pb); 409 int sstr = gdk_pixbuf_get_rowstride (pb);
400 int Er[IW], Eg[IW], Eb[IW];
401 int seed = 77;
402
403 RETVAL = newSV (w * h);
404 SvPOK_only (RETVAL);
405 SvCUR_set (RETVAL, w * h);
406
407 dst = (guchar *)SvPVX (RETVAL);
408
409 memset (Er, 0, sizeof (int) * IW);
410 memset (Eg, 0, sizeof (int) * IW);
411 memset (Eb, 0, sizeof (int) * IW);
412
413 /* some primitive error distribution + random dithering */
414
415 for (y = 0; y < h; y++)
416 {
417 int er = 0, eg = 0, eb = 0;
418
419 for (x = 0; x < w; x++)
420 {
421 int r, g, b;
422 guchar *p = src + x * bpp + y * sstr;
423
424 r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
425 g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
426 b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
427
428 r = r > 7 ? 7 : r < 0 ? 0 : r;
429 g = g > 7 ? 7 : g < 0 ? 0 : g;
430 b = b > 3 ? 3 : b < 0 ? 0 : b;
431
432 er += p[0] - (r * 255 + 4) / 7;
433 eg += p[1] - (g * 255 + 4) / 7;
434 eb += p[2] - (b * 255 + 2) / 3;
435
436 Er[x] = er >> 1; er -= (er + 1) >> 1;
437 Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
438 Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
439
440 *dst++ = r << 5 | g << 2 | b;
441 }
442 }
443}
444 OUTPUT:
445 RETVAL
446
447#############################################################################
448
449MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
450
451void
452dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
453 CODE:
454{
455 int w = gdk_pixbuf_get_width (pb);
456 int h = gdk_pixbuf_get_height (pb);
457 int x, y, i;
458 guchar *dst;
459 int bpp = gdk_pixbuf_get_n_channels (pb);
460 guchar *src = gdk_pixbuf_get_pixels (pb);
461 int sstr = gdk_pixbuf_get_rowstride (pb);
462
463 a85_init ();
464
465 for (y = 0; y < h; y++)
466 for (x = 0; x < w; x++)
467 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
468 a85_push (fp, src [x * bpp + y * sstr + i]);
469
470 a85_finish (fp);
471}
472
473void
474dump_binary (PerlIO *fp, GdkPixbuf *pb)
475 CODE:
476{
477 int w = gdk_pixbuf_get_width (pb);
478 int h = gdk_pixbuf_get_height (pb);
479 int x, y, i;
480 guchar *dst;
481 int bpp = gdk_pixbuf_get_n_channels (pb);
482 guchar *src = gdk_pixbuf_get_pixels (pb);
483 int sstr = gdk_pixbuf_get_rowstride (pb);
484
485 for (y = 0; y < h; y++)
486 for (x = 0; x < w; x++)
487 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
488 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
489}
490
491#############################################################################
492
493MODULE = Gtk2::CV PACKAGE = Gtk2::CV
494
495SV *
496pb_to_hv84 (GdkPixbuf *pb)
497 CODE:
498{
499 int w = gdk_pixbuf_get_width (pb);
500 int h = gdk_pixbuf_get_height (pb);
501 int x, y;
502 guchar *dst;
503 int bpp = gdk_pixbuf_get_n_channels (pb);
504 guchar *src = gdk_pixbuf_get_pixels (pb);
505 int sstr = gdk_pixbuf_get_rowstride (pb);
506 410
507 RETVAL = newSV (6 * 8 * 12 / 8); 411 RETVAL = newSV (6 * 8 * 12 / 8);
508 SvPOK_only (RETVAL); 412 SvPOK_only (RETVAL);
509 SvCUR_set (RETVAL, 6 * 8 * 12 / 8); 413 SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
510 414

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