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Badge dump overhaul

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This commit is contained in:
Alex Taber
2024-06-12 18:01:25 -04:00
parent 4669f13d05
commit c3e09adcb2
10 changed files with 262 additions and 19 deletions
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60
source/conversion.c
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@@ -3,6 +3,66 @@
#include <png.h>
// don't be fooled - this function always expects 64x64 input buffers. Width/height only
// control output resolution
int rgb565ToPngFile(char *filename, u16 *rgb_buf, u8 *alpha_buf, int width, int height)
{
FILE *fp = fopen(filename, "wb");
u8 *image = malloc(64 * 64 * 4);
if (!image) return -1;
int i, x, y, r, g, b, a;
for (i = 0; i < 64 * 64; ++i)
{
r = (rgb_buf[i] & 0xF800) >> 11;
g = (rgb_buf[i] & 0x07E0) >> 5;
b = (rgb_buf[i] & 0x001F);
a = (alpha_buf[i/2] >> (4*(i%2))) & 0x0F;
r = round(r * 255.0 / 31.0);
g = round(g * 255.0 / 63.0);
b = round(b * 255.0 / 31.0);
a = a * 0x11;
x = 8*((i/64)%8) + (((i%64)&0x01) >> 0) + (((i%64)&0x04) >> 1) + (((i%64)&0x10) >> 2);
y = 8*(i/512) + (((i%64)&0x02) >> 1) + (((i%64)&0x08) >> 2) + (((i%64)&0x20) >> 3);
image[y * 64 * 4 + x * 4 + 0] = r;
image[y * 64 * 4 + x * 4 + 1] = g;
image[y * 64 * 4 + x * 4 + 2] = b;
image[y * 64 * 4 + x * 4 + 3] = a;
}
png_structp png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
png_infop info = png_create_info_struct(png);
setjmp(png_jmpbuf(png));
png_init_io(png, fp);
png_set_IHDR(png, info, width, height, 8, PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
png_write_info(png, info);
png_bytep row = malloc(4 * width * sizeof(png_byte));
for (y = 0; y < height; ++y)
{
for (x = 0; x < width; ++x)
{
row[x * 4 + 0] = image[(y * 64 + x) * 4 + 0];
row[x * 4 + 1] = image[(y * 64 + x) * 4 + 1];
row[x * 4 + 2] = image[(y * 64 + x) * 4 + 2];
row[x * 4 + 3] = image[(y * 64 + x) * 4 + 3];
}
png_write_row(png, row);
}
png_write_end(png, info);
png_free_data(png, info, PNG_FREE_ALL, -1);
png_destroy_write_struct(&png, NULL);
free(row);
free(image);
fflush(fp);
fclose(fp);
return 0;
}
int pngToRGB565(char *png_buf, u64 fileSize, u16 *rgb_buf_64x64, u8 *alpha_buf_64x64, u16 *rgb_buf_32x32, u8 *alpha_buf_32x32, bool set_icon)
{
if (png_buf == NULL) return 0;