106 lines
2.6 KiB
C++
106 lines
2.6 KiB
C++
#include "../include/utils.h"
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#include <gint/image.h>
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/*
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size_t image_size_profile(int profile, int width, int height)
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{
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size_t size = sizeof(bopti_image_t);
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if(profile == 0 || profile == 1) // PX_RGB565, PX_RGB565A
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size += width * height * 2;
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else if(profile == 2) // PX_P8
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size += 512 + width * height;
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else if(profile == 3) // PX_P4
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size += 32 + ((width + 1) / 2) * height;
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return size;
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}
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size_t image_size(bopti_image_t const *img)
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{
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return image_size_profile(img->profile, img->width, img->height);
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}
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int get_pixel(bopti_image_t const *img, int x, int y)
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{
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if((unsigned)x >= img->width || (unsigned)y >= img->height)
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return 0;
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uint8_t *bytes = (void *)img->data;
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if(img->profile <= 1)
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return img->data[y * img->width + x];
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if(img->profile == 2)
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return bytes[y * img->width + x + 512];
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if(img->profile == 3)
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{
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int s = (img->width + 1) >> 1;
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int i = y * s + (x >> 1) + 32;
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if(x & 1)
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return bytes[i] & 0x0f;
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else
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return bytes[i] >> 4;
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}
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return 0;
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}
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void set_pixel(bopti_image_t *img, int x, int y, int color)
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{
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if((unsigned)x >= img->width || (unsigned)y >= img->height)
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return;
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uint8_t *bytes = (void *)img->data;
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if(img->profile <= 1)
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img->data[y * img->width + x] = color;
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else if(img->profile == 2)
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bytes[y * img->width + x + 512] = color;
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else if(img->profile == 3)
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{
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int s = (img->width + 1) >> 1;
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int i = y * s + (x >> 1) + 32;
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if(x & 1)
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bytes[i] = (bytes[i] & 0xf0) | (color & 0x0f);
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else
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bytes[i] = (bytes[i] & 0x0f) | ((color & 0x0f) << 4);
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}
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}
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bopti_image_t *resize(bopti_image_t const *src, int w, int h)
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{
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size_t size = image_size_profile(src->profile, w, h);
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bopti_image_t *img = malloc(size);
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if(!img) return NULL;
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size_t palette_size = 0;
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if(src->profile == 2) // PX_P8
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palette_size = 512;
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else if(src->profile == 3) // PX_P4
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palette_size = 32;
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img->profile = src->profile;
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img->alpha = src->alpha;
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img->width = w;
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img->height = h;
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memcpy(img->data, src->data, palette_size);
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for(int y = 0; y < h; y++)
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for(int x = 0; x < w; x++)
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{
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int color = get_pixel(src, x * src->width / w, y * src->height / h);
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set_pixel(img, x, y, color);
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}
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return img;
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}
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*/
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bopti_image_t *resize(bopti_image_t const *src, int w, int h)
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{
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image_linear_map scale;
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image_scale( src, 65536*w/src->width, 65536*h/src->height, &scale );
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return image_linear_alloc(src, &scale );
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}
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