65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
#include <stdint.h>
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#include <stddef.h>
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#include <lib/image.h>
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#include <lib/config.h>
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#include <lib/misc.h>
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#include <mm/pmm.h>
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#include <stb/stb_image.h>
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void image_make_centered(struct image *image, int frame_x_size, int frame_y_size, uint32_t back_colour) {
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image->type = IMAGE_CENTERED;
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image->x_displacement = frame_x_size / 2 - image->x_size / 2;
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image->y_displacement = frame_y_size / 2 - image->y_size / 2;
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image->back_colour = back_colour;
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}
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void image_make_stretched(struct image *image, int new_x_size, int new_y_size) {
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image->type = IMAGE_STRETCHED;
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image->x_size = new_x_size;
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image->y_size = new_y_size;
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}
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struct image *image_open(struct file_handle *file) {
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struct image *image = ext_mem_alloc(sizeof(struct image));
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image->type = IMAGE_TILED;
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void *src = ext_mem_alloc(file->size);
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fread(file, src, 0, file->size);
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int x, y, bpp;
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image->img = stbi_load_from_memory(src, file->size, &x, &y, &bpp, 4);
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pmm_free(src, file->size);
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if (image->img == NULL) {
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pmm_free(image, sizeof(struct image));
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return NULL;
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}
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// Convert ABGR to XRGB
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uint32_t *pptr = (void *)image->img;
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for (int i = 0; i < x * y; i++) {
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pptr[i] = (pptr[i] & 0x0000ff00) | ((pptr[i] & 0x00ff0000) >> 16) | ((pptr[i] & 0x000000ff) << 16);
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}
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image->x_size = x;
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image->y_size = y;
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image->pitch = x * 4;
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image->bpp = 32;
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image->img_width = x;
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image->img_height = y;
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return image;
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}
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void image_close(struct image *image) {
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stbi_image_free(image->img);
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pmm_free(image, sizeof(struct image));
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}
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