31 lines
670 B
C
31 lines
670 B
C
#include <gint/image.h>
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#include <gint/defs/util.h>
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#include <stdlib.h>
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bool image_alloc_palette(image_t *img, int size)
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{
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if(!img || !IMAGE_IS_INDEXED(img))
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return;
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if(img->flags & IMAGE_FLAGS_PALETTE_OWN)
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free(img->palette);
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if(IMAGE_IS_P8(img)) {
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size = (size <= 0) ? 256 : min(size, 256);
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}
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if(IMAGE_IS_P4(img)) {
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size = 16;
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}
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img->palette = calloc(size, 2);
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img->color_count = 0;
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img->flags &= ~IMAGE_FLAGS_PALETTE_OWN;
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if(!img->palette)
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return false;
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memset(img->palette, 0, 2*size);
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img->color_count = size;
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img->flags |= IMAGE_FLAGS_PALETTE_OWN;
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return true;
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}
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