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Consider RW subchannels as ok if some are all 0s and some are all 1s, as it seems to be a somewhat common pattern. Fixes #401

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This commit is contained in:
Natalia Portillo
2020-11-09 21:03:04 +00:00
parent 146bb0804e
commit 9cae71f709
1 changed files with 19 additions and 5 deletions
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24
Aaru.Core/Media/CompactDisc.cs
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@@ -87,8 +87,6 @@ namespace Aaru.Core.Media
bool pOk = true;
int pWeight = 0;
bool rwOk = true;
for(int p = subPos; p < subPos + 12; p++)
{
if(deSub[p] != 0 &&
@@ -100,10 +98,26 @@ namespace Aaru.Core.Media
pWeight++;
}
if(!deSub.Skip(subPos + 24).Take(96 - 24).All(rw => rw == 0) &&
!deSub.Skip(subPos + 24).Take(96 - 24).All(rw => rw == 0xFF))
rwOk = false;
// This seems to be a somewhat common pattern
bool rOk = deSub.Skip(subPos + 24).Take(12).All(r => r == 0x00) ||
deSub.Skip(subPos + 24).Take(12).All(r => r == 0xFF);
bool sOk = deSub.Skip(subPos + 36).Take(12).All(s => s == 0x00) ||
deSub.Skip(subPos + 36).Take(12).All(s => s == 0xFF);
bool tOk = deSub.Skip(subPos + 48).Take(12).All(t => t == 0x00) ||
deSub.Skip(subPos + 48).Take(12).All(t => t == 0xFF);
bool uOk = deSub.Skip(subPos + 60).Take(12).All(u => u == 0x00) ||
deSub.Skip(subPos + 60).Take(12).All(u => u == 0xFF);
bool vOk = deSub.Skip(subPos + 72).Take(12).All(v => v == 0x00) ||
deSub.Skip(subPos + 72).Take(12).All(v => v == 0xFF);
bool wOk = deSub.Skip(subPos + 84).Take(12).All(w => w == 0x00) ||
deSub.Skip(subPos + 84).Take(12).All(w => w == 0xFF);
bool rwOk = rOk && sOk && tOk && uOk && vOk && wOk;
bool rwPacket = false;
bool cdtextPacket = false;