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Don't hash on run or index

This commit is contained in:
Andrew 2023-01-08 08:39:16 +13:00
parent c3dcfe780b
commit 3b0bb8ca1c
1 changed files with 8 additions and 2 deletions
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10
qoi.h
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@ -548,12 +548,14 @@ void *qoi_decode(const void *data, int size, qoi_desc *desc, int channels) {
px.rgba.r = bytes[p++];
px.rgba.g = bytes[p++];
px.rgba.b = bytes[p++];
index[QOI_COLOR_HASH(px) % 64] = px;
}
else if (b1 == QOI_OP_RGBA) {
px.rgba.r = bytes[p++];
px.rgba.g = bytes[p++];
px.rgba.b = bytes[p++];
px.rgba.a = bytes[p++];
index[QOI_COLOR_HASH(px) % 64] = px;
}
else if ((b1 & QOI_MASK_2) == QOI_OP_INDEX) {
px = index[b1];
@ -562,6 +564,7 @@ void *qoi_decode(const void *data, int size, qoi_desc *desc, int channels) {
px.rgba.r += ((b1 >> 4) & 0x03) - 2;
px.rgba.g += ((b1 >> 2) & 0x03) - 2;
px.rgba.b += ( b1 & 0x03) - 2;
index[QOI_COLOR_HASH(px) % 64] = px;
}
else if ((b1 & QOI_MASK_2) == QOI_OP_LUMA) {
int b2 = bytes[p++];
@ -569,12 +572,15 @@ void *qoi_decode(const void *data, int size, qoi_desc *desc, int channels) {
px.rgba.r += vg - 8 + ((b2 >> 4) & 0x0f);
px.rgba.g += vg;
px.rgba.b += vg - 8 + (b2 & 0x0f);
index[QOI_COLOR_HASH(px) % 64] = px;
}
else if ((b1 & QOI_MASK_2) == QOI_OP_RUN) {
else { // QOI_OP_RUN
run = (b1 & 0x3f);
if (px_pos == 0) {
index[QOI_COLOR_HASH(px) % 64] = px;
}
}
index[QOI_COLOR_HASH(px) % 64] = px;
}
pixels[px_pos + 0] = px.rgba.r;