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Factor out a single PNG-reading function to encapsulate the libpng API (#1765)

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Rangi
2025-07-23 15:53:33 -04:00
committed by GitHub
parent 2ce4cdbff6
commit 7e151f16c3
19 changed files with 395 additions and 543 deletions
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19
src/gfx/pal_sorting.cpp
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@@ -8,27 +8,14 @@
#include "gfx/main.hpp"
void sortIndexed(
std::vector<Palette> &palettes,
int palSize,
png_color const *palRGB,
int palAlphaSize,
png_byte *palAlpha
) {
void sortIndexed(std::vector<Palette> &palettes, std::vector<Rgba> const &embPal) {
options.verbosePrint(Options::VERB_LOG_ACT, "Sorting palettes using embedded palette...\n");
auto pngToRgb = [&palRGB, &palAlphaSize, &palAlpha](int index) {
png_color const &c = palRGB[index];
return Rgba(
c.red, c.green, c.blue, palAlpha && index < palAlphaSize ? palAlpha[index] : 0xFF
);
};
for (Palette &pal : palettes) {
std::sort(RANGE(pal), [&](uint16_t lhs, uint16_t rhs) {
// Iterate through the PNG's palette, looking for either of the two
for (int i = 0; i < palSize; ++i) {
uint16_t color = pngToRgb(i).cgbColor();
for (Rgba const &rgba : embPal) {
uint16_t color = rgba.cgbColor();
if (color == Rgba::transparent) {
continue;
}