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Add tilecache before smartcrop to avoid over-computation

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Lovell Fuller
2017-11-17 19:53:50 +00:00
parent ba521fccb4
commit 1fec132dee
4 changed files with 7 additions and 22 deletions
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17
src/operations.cc
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@@ -267,23 +267,6 @@ namespace sharp {
}
}
/*
Insert a tile cache to prevent over-computation of any previous operations in the pipeline
*/
VImage TileCache(VImage image, double const factor) {
int tile_width;
int tile_height;
int scanline_count;
vips_get_tile_size(image.get_image(), &tile_width, &tile_height, &scanline_count);
double const need_lines = 1.2 * scanline_count / factor;
return image.tilecache(VImage::option()
->set("tile_width", image.width())
->set("tile_height", 10)
->set("max_tiles", static_cast<int>(round(1.0 + need_lines / 10.0)))
->set("access", VIPS_ACCESS_SEQUENTIAL)
->set("threaded", TRUE));
}
VImage Threshold(VImage image, double const threshold, bool const thresholdGrayscale) {
if (!thresholdGrayscale) {
return image >= threshold;