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more correctly generate cue pregaps using entire previous track type

This commit is contained in:
zeromus 2015-07-01 20:58:02 -05:00
parent 0443db051b
commit 449cd4b668
2 changed files with 13 additions and 23 deletions
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28
BizHawk.Emulation.DiscSystem/CUE/CUE_Load.cs
View File

@ -257,20 +257,16 @@ namespace BizHawk.Emulation.DiscSystem
}
}
//if we're in a pregap, setup subQ and gap type depending on tracktype
EControlQ qFlags = (EControlQ)(int)cct.Flags;
//select the track type for the subQ
//it's obviously the same as the main track type usually, but during a pregap it can be different
TrackInfo qTrack = ti;
int qRelMSF = relMSF;
bool audioGap = true;
if (curr_index == 0)
{
//tweak relMSF due to ambiguity/contradiction in yellowbook docs
if (!context.DiscMountPolicy.CUE_PregapContradictionModeA)
qRelMSF++;
//normally the gap takes this track's type
if (cct.TrackType != CueFile.TrackType.Audio) audioGap = false;
//now for something special.
//[IEC10149] says there's two "intervals" of a pregap.
//mednafen's pseudocode interpretation of this:
//if this is a data track and the previous track was not data, the last 150 sectors of the pregap match this track and the earlier sectors (at least 75) math the previous track
@ -279,10 +275,7 @@ namespace BizHawk.Emulation.DiscSystem
{
if (relMSF < -150)
{
qFlags = (EControlQ)(int)TrackInfos[t - 1].CompiledCueTrack.Flags;
audioGap = true;
//TODO - actually generate the entire sector like the track before, including audio vs data encoding
//that means, dont get qFlags here, but instead reference a track to pull flags +and other data+ from
qTrack = TrackInfos[t - 1];
}
}
}
@ -291,14 +284,14 @@ namespace BizHawk.Emulation.DiscSystem
SS_Base ss = null;
if (generateGap)
{
//if we were supposed to generate a gap, replace it with a new sector synth and feed it zeros
ss = new SS_Gap();
ss.TrackType = cct.TrackType; //TODO - old track type in some < -150 cases?
var ss_gap = new SS_Gap();
ss_gap.TrackType = qTrack.CompiledCueTrack.TrackType;
ss = ss_gap;
}
else
{
int sectorSize = int.MaxValue;
switch (cct.TrackType)
switch (qTrack.CompiledCueTrack.TrackType)
{
case CueFile.TrackType.Audio:
case CueFile.TrackType.CDI_2352:
@ -320,7 +313,6 @@ namespace BizHawk.Emulation.DiscSystem
ss.Blob = curr_blobInfo.Blob;
ss.BlobOffset = curr_blobOffset;
ss.TrackType = cct.TrackType;
curr_blobOffset += sectorSize;
curr_blobMSF++;
}
@ -329,7 +321,7 @@ namespace BizHawk.Emulation.DiscSystem
//setup subQ
byte ADR = 1; //absent some kind of policy for how to set it, this is a safe assumption:
ss.sq.SetStatus(ADR, qFlags);
ss.sq.SetStatus(ADR, (EControlQ)(int)qTrack.CompiledCueTrack.Flags);
ss.sq.q_tno = BCD2.FromDecimal(cct.Number);
ss.sq.q_index = BCD2.FromDecimal(curr_index);
ss.sq.AP_Timestamp = new Timestamp(OUT_Disc.Sectors.Count);
@ -369,7 +361,7 @@ namespace BizHawk.Emulation.DiscSystem
for (int s = 0; s < specifiedPostgapLength; s++)
{
var se= new SectorEntry(null);
SS_Base ss = new SS_Gap();
var ss = new SS_Gap();
ss.TrackType = cct.TrackType; //TODO - old track type in some < -150 cases?
//-subq-

8
BizHawk.Emulation.DiscSystem/CUE/CUE_Synths.cs
View File

@ -18,10 +18,7 @@ namespace BizHawk.Emulation.DiscSystem
public SubchannelQ sq;
//subP data
public bool Pause; //not sure I like this anymore.. .. .. should be determined from track type, right?
//required
public CueFile.TrackType TrackType;
public bool Pause;
public abstract void Synth(SectorSynthJob job);
@ -144,7 +141,8 @@ namespace BizHawk.Emulation.DiscSystem
class SS_Gap : SS_Base
{
//public CueFile.TrackType TrackType; //shouldnt be in base class...
public CueFile.TrackType TrackType;
public override void Synth(SectorSynthJob job)
{
//this isn't fully analyzed/optimized