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MDEC: Handle decode return finished

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Blue 2021-02-27 19:28:24 +01:00
parent 3fe167d928
commit 1e423d3616
1 changed files with 8 additions and 5 deletions
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13
ProjectPSX/Devices/MDEC.cs
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@ -100,7 +100,8 @@ namespace ProjectPSX.Devices {
byte[] qt = currentBlock >= 4 ? colorQuantTable : luminanceQuantTable;
//todo check if was success and idct and currentblock++ there so we can return here
//and recover state when handling resumable macroblock decoding...
rl_decode_block(block[currentBlock], qt);
if (!rl_decode_block(block[currentBlock], qt)) return;
idct_core(block[currentBlock]);
currentBlock++;
@ -154,16 +155,16 @@ namespace ProjectPSX.Devices {
private int q_scale;
private int val;
private ushort n;
public void rl_decode_block(short[] blk, byte[] qt) {
public bool rl_decode_block(short[] blk, byte[] qt) {
if (blockPointer >= 64) { //Start of new block
for (int i = 0; i < blk.Length; i++) {
blk[i] = 0;
}
if (inBuffer.Count == 0) return;
if (inBuffer.Count == 0) return false;
n = inBuffer.Dequeue();
while (n == 0xFE00) {
if (inBuffer.Count == 0) return;
if (inBuffer.Count == 0) return false;
n = inBuffer.Dequeue();
}
@ -189,13 +190,15 @@ namespace ProjectPSX.Devices {
blk[blockPointer] = (short)val;
}
if (inBuffer.Count == 0) return;
if (inBuffer.Count == 0) return false;
n = inBuffer.Dequeue();
blockPointer += ((n >> 10) & 0x3F) + 1;
val = (signed10bit(n & 0x3FF) * qt[blockPointer & 0x3F] * q_scale + 4) / 8;
}
return true;
}
private void idct_core(short[] src) {