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Add alpha support

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This commit is contained in:
Surma
2020-08-28 13:11:50 +01:00
committed by Ingvar Stepanyan
parent c2218bce90
commit 7e97b36249
2 changed files with 6 additions and 1 deletions
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7
codecs/jxl/dec/jxl_dec.cpp
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@@ -43,6 +43,7 @@ RawImage decode(std::string data) {
int width = buffer->xsize(); int width = buffer->xsize();
int height = buffer->ysize(); int height = buffer->ysize();
result = new uint8_t[width * height * 4]; result = new uint8_t[width * height * 4];
bool has_alpha = main->HasAlpha();
for (int y = 0; y < height; y++) { for (int y = 0; y < height; y++) {
const float* red = buffer->PlaneRow(0, y); const float* red = buffer->PlaneRow(0, y);
const float* green = buffer->PlaneRow(1, y); const float* green = buffer->PlaneRow(1, y);
@@ -52,7 +53,11 @@ RawImage decode(std::string data) {
result[pixelOffset * 4 + 0] = clamp(red[x], 0, 255); result[pixelOffset * 4 + 0] = clamp(red[x], 0, 255);
result[pixelOffset * 4 + 1] = clamp(green[x], 0, 255); result[pixelOffset * 4 + 1] = clamp(green[x], 0, 255);
result[pixelOffset * 4 + 2] = clamp(blue[x], 0, 255); result[pixelOffset * 4 + 2] = clamp(blue[x], 0, 255);
result[pixelOffset * 4 + 3] = 255; if (has_alpha) {
result[pixelOffset * 4 + 3] = (uint8_t)(main->alpha().ConstRow(y)[x] & 0xFF);
} else {
result[pixelOffset * 4 + 3] = 255;
}
} }
} }

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codecs/jxl/dec/jxl_dec.wasm
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