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Disable LodePNG auto-encoding the bpp2png image

This commit is contained in:
Rangi42 2024-03-04 10:29:38 -05:00
parent 9ea843b8a4
commit c1da20e2f1
1 changed files with 7 additions and 4 deletions
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11
tools/bpp2png.c
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@ -147,7 +147,7 @@ uint8_t *rearrange_tiles_to_scanlines(uint8_t *bpp_data, unsigned int width, uns
void read_gbcpal(Palette palette, const char *filename) {
long filesize;
uint8_t *pal_data = read_u8(filename, &filesize);
if (filesize != 4 * 2) {
if (filesize < 4 * 2) {
error_exit("Invalid .gbcpal file: \"%s\"\n", filename);
}
for (int i = 0; i < 4; i++) {
@ -160,10 +160,12 @@ void read_gbcpal(Palette palette, const char *filename) {
free(pal_data);
}
unsigned int write_png(const char *filename, uint8_t *bpp_data, unsigned int width, unsigned int height, Palette palette) {
unsigned int write_png(const char *filename, uint8_t *bpp_data, unsigned int depth,
unsigned int width, unsigned int height, Palette palette) {
LodePNGState state;
lodepng_state_init(&state);
state.info_raw.bitdepth = state.info_png.color.bitdepth = 2;
state.encoder.auto_convert = 0; // Always use the colortype we specify
state.info_raw.bitdepth = state.info_png.color.bitdepth = depth;
if (palette) {
state.info_raw.colortype = state.info_png.color.colortype = LCT_PALETTE;
@ -230,7 +232,8 @@ int main(int argc, char *argv[]) {
bpp_data = rearrange_tiles_to_scanlines(bpp_data, options.width, height);
const char *png_filename = argv[1];
unsigned int error = write_png(png_filename, bpp_data, options.width, height, options.palette ? palette : NULL);
unsigned int error = write_png(png_filename, bpp_data, options.depth, options.width, height,
options.palette ? palette : NULL);
if (error) {
error_exit("Could not write to file \"%s\": %s\n", png_filename, lodepng_error_text(error));
}