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Gamma correction for custom palettes (#3399).

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Bugfix for audio palettes.
This commit is contained in:
Blaz Kristan
2023-10-01 21:15:14 +02:00
parent 76e0e935f0
commit 6f96dc8f23
2 changed files with 31 additions and 15 deletions
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12
wled00/FX_fcn.cpp
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@@ -1752,7 +1752,7 @@ void WS2812FX::loadCustomPalettes() {
if (readObjectFromFile(fileName, nullptr, &pDoc)) {
JsonArray pal = pDoc[F("palette")];
if (!pal.isNull() && pal.size()>4) { // not an empty palette (at least 2 entries)
if (!pal.isNull() && pal.size()>3) { // not an empty palette (at least 2 entries)
if (pal[0].is<int>() && pal[1].is<const char *>()) {
// we have an array of index & hex strings
size_t palSize = MIN(pal.size(), 36);
@@ -1761,7 +1761,7 @@ void WS2812FX::loadCustomPalettes() {
uint8_t rgbw[] = {0,0,0,0};
tcp[ j ] = (uint8_t) pal[ i ].as<int>(); // index
colorFromHexString(rgbw, pal[i+1].as<const char *>()); // will catch non-string entires
for (size_t c=0; c<3; c++) tcp[j+1+c] = rgbw[c]; // only use RGB component
for (size_t c=0; c<3; c++) tcp[j+1+c] = gamma8(rgbw[c]); // only use RGB component
DEBUG_PRINTF("%d(%d) : %d %d %d\n", i, int(tcp[j]), int(tcp[j+1]), int(tcp[j+2]), int(tcp[j+3]));
}
} else {
@@ -1769,13 +1769,15 @@ void WS2812FX::loadCustomPalettes() {
palSize -= palSize % 4; // make sure size is multiple of 4
for (size_t i=0; i<palSize && pal[i].as<int>()<256; i+=4) {
tcp[ i ] = (uint8_t) pal[ i ].as<int>(); // index
tcp[i+1] = (uint8_t) pal[i+1].as<int>(); // R
tcp[i+2] = (uint8_t) pal[i+2].as<int>(); // G
tcp[i+3] = (uint8_t) pal[i+3].as<int>(); // B
tcp[i+1] = gamma8((uint8_t) pal[i+1].as<int>()); // R
tcp[i+2] = gamma8((uint8_t) pal[i+2].as<int>()); // G
tcp[i+3] = gamma8((uint8_t) pal[i+3].as<int>()); // B
DEBUG_PRINTF("%d(%d) : %d %d %d\n", i, int(tcp[i]), int(tcp[i+1]), int(tcp[i+2]), int(tcp[i+3]));
}
}
customPalettes.push_back(targetPalette.loadDynamicGradientPalette(tcp));
} else {
DEBUG_PRINTLN(F("Wrong palette format."));
}
}
} else {