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TOOLS: Restore support for DXA compression type 3

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This commit is contained in:
Cameron Cawley
2023-04-04 22:31:11 +01:00
committed by Eugene Sandulenko
parent 7fa0ecd7d7
commit c233e99658
1 changed files with 35 additions and 0 deletions
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encode_dxa.cpp
+35
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@@ -162,7 +162,42 @@ void DxaEncoder::writeFrame(byte *frame, byte *palette) {
delete[] outbuf;
break;
}
case 3:
{
uLong outsize;
uLong outsize1 = _width * _workheight;
uLong outsize2 = outsize1;
byte *outbuf;
byte *outbuf1 = new byte[outsize1];
byte *outbuf2 = new byte[outsize2];
byte *xorbuf = new byte[_width * _workheight];
for (int i = 0; i < _width * _workheight; i++)
xorbuf[i] = _prevframe[i] ^ frame[i];
compress2(outbuf1, &outsize1, xorbuf, _width * _workheight, 9);
compress2(outbuf2, &outsize2, frame, _width * _workheight, 9);
if (outsize1 < outsize2) {
compType = 3;
outsize = outsize1;
outbuf = outbuf1;
} else {
compType = 2;
outsize = outsize2;
outbuf = outbuf2;
}
_dxa.writeByte(compType);
_dxa.writeUint32BE(outsize);
_dxa.write(outbuf, outsize);
delete[] outbuf1;
delete[] outbuf2;
delete[] xorbuf;
break;
}
case 13:
{
int r;