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Implement detection of CD+G, CD+EG and CD+MIDI.

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This commit is contained in:
Natalia Portillo
2020-06-21 19:05:45 +01:00
parent c069073d19
commit 99a483f02f
1 changed files with 146 additions and 0 deletions
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146
Aaru.Core/Media/Detection/MMC.cs
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@@ -1210,6 +1210,58 @@ namespace Aaru.Core.Media.Detection
return;
}
// Check CD+G, CD+EG and CD+MIDI
if(mediaType == MediaType.CDDA)
{
sense = dev.ReadCd(out byte[] subBuf, out _, 150, 96, 8, MmcSectorTypes.Cdda, false, false,
false, MmcHeaderCodes.None, false, false, MmcErrorField.None,
MmcSubchannel.Raw, dev.Timeout, out _);
if(!sense)
{
bool cdg = false;
bool cdeg = false;
bool cdmidi = false;
for(int i = 0; i < 8; i++)
{
byte[] tmpSub = new byte[96];
Array.Copy(subBuf, i * 96, tmpSub, 0, 96);
DetectRwPackets(tmpSub, out bool cdgPacket, out bool cdegPacket, out bool cdmidiPacket);
if(cdgPacket)
cdg = true;
if(cdegPacket)
cdeg = true;
if(cdmidiPacket)
cdmidi = true;
}
if(cdeg)
{
mediaType = MediaType.CDEG;
return;
}
if(cdg)
{
mediaType = MediaType.CDG;
return;
}
if(cdmidi)
{
mediaType = MediaType.CDMIDI;
return;
}
}
}
// Check if ISO9660
sense = dev.Read12(out byte[] isoSector, out _, 0, false, true, false, false, 16, 2048, 0, 1, false,
dev.Timeout, out _);
@@ -1711,5 +1763,99 @@ namespace Aaru.Core.Media.Detection
break;
}
}
static void DetectRwPackets(byte[] subchannel, out bool cdgPacket, out bool cdegPacket, out bool cdmidiPacket)
{
cdgPacket = false;
cdegPacket = false;
cdmidiPacket = false;
byte[] cdSubRwPack1 = new byte[24];
byte[] cdSubRwPack2 = new byte[24];
byte[] cdSubRwPack3 = new byte[24];
byte[] cdSubRwPack4 = new byte[24];
int i = 0;
for(int j = 0; j < 24; j++)
cdSubRwPack1[j] = (byte)(subchannel[i++] & 0x3F);
for(int j = 0; j < 24; j++)
cdSubRwPack2[j] = (byte)(subchannel[i++] & 0x3F);
for(int j = 0; j < 24; j++)
cdSubRwPack3[j] = (byte)(subchannel[i++] & 0x3F);
for(int j = 0; j < 24; j++)
cdSubRwPack4[j] = (byte)(subchannel[i++] & 0x3F);
switch(cdSubRwPack1[0])
{
case 0x08:
case 0x09:
cdgPacket = true;
break;
case 0x0A:
cdegPacket = true;
break;
case 0x38:
cdmidiPacket = true;
break;
}
switch(cdSubRwPack2[0])
{
case 0x08:
case 0x09:
cdgPacket = true;
break;
case 0x0A:
cdegPacket = true;
break;
case 0x38:
cdmidiPacket = true;
break;
}
switch(cdSubRwPack3[0])
{
case 0x08:
case 0x09:
cdgPacket = true;
break;
case 0x0A:
cdegPacket = true;
break;
case 0x38:
cdmidiPacket = true;
break;
}
switch(cdSubRwPack4[0])
{
case 0x08:
case 0x09:
cdgPacket = true;
break;
case 0x0A:
cdegPacket = true;
break;
case 0x38:
cdmidiPacket = true;
break;
}
}
}
}