… | … | ||
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355 | assert (gdk_pixbuf_get_n_channels (b) == 3); | 355 | assert (gdk_pixbuf_get_n_channels (b) == 3); |
356 | 356 | ||
357 | double diff = 0.; | 357 | double diff = 0.; |
358 | int peak = 0; | 358 | int peak = 0; |
359 | 359 | ||
360 | if (x && y) | 360 | if (w && h) |
361 | for (y = 0; y < h; y++) | 361 | for (y = 0; y < h; y++) |
362 | { | 362 | { |
363 | guchar *pa_ = pa + y * sa; | 363 | guchar *pa_ = pa + y * sa; |
364 | guchar *pb_ = pb + y * sb; | 364 | guchar *pb_ = pb + y * sb; |
365 | 365 |
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