public void Synth(SectorSynthJob job)
{
//be lazy, just generate the whole sector unconditionally
//this is mostly based on mednafen's approach, which was probably finely tailored for PSX
//heres the comments on the subject:
// I'm not trusting that the "control" field for the TOC leadout entry will always be set properly, so | the control fields for the last track entry
// and the leadout entry together before extracting the D2 bit. Audio track->data leadout is fairly benign though maybe noisy(especially if we ever implement
// data scrambling properly), but data track->audio leadout could break things in an insidious manner for the more accurate drive emulation code).
var ses = job.Disc.Structure.Sessions[SessionNumber];
int lba_relative = job.LBA - ses.LeadoutTrack.LBA;
//data is zero
int ts = lba_relative;
int ats = job.LBA;
const int ADR = 0x1; // Q channel data encodes position
EControlQ control = ses.LeadoutTrack.Control;
//ehhh? CDI?
//if(toc.tracks[toc.last_track].valid)
// control |= toc.tracks[toc.last_track].control & 0x4;
//else if(toc.disc_type == DISC_TYPE_CD_I)
// control |= 0x4;
control |= (EControlQ)(((int)ses.LastInformationTrack.Control) & 4);
SubchannelQ sq = new SubchannelQ();
sq.SetStatus(ADR, control);
sq.q_tno.BCDValue = 0xAA;
sq.q_index.BCDValue = 0x01;
sq.Timestamp = ts;
sq.AP_Timestamp = ats;
sq.zero = 0;
//finally, rely on a gap sector to do the heavy lifting to synthesize this
DiscFormats.CUE.CueTrackType TrackType = DiscFormats.CUE.CueTrackType.Audio;
if (ses.LeadoutTrack.IsData)
{
if (job.Disc.TOC.Session1Format == SessionFormat.Type20_CDXA || job.Disc.TOC.Session1Format == SessionFormat.Type10_CDI)
{
TrackType = DiscFormats.CUE.CueTrackType.Mode2_2352;
}
else
{
TrackType = DiscFormats.CUE.CueTrackType.Mode1_2352;
}
}
DiscFormats.CUE.SS_Gap ss_gap = new DiscFormats.CUE.SS_Gap()
{
Policy = Policy,
sq = sq,
TrackType = TrackType,
Pause = true //?
};
ss_gap.Synth(job);
}
public void Synth(SectorSynthJob job)
{
Original.Synth(job);
if ((job.Parts & ESectorSynthPart.SubchannelQ) == 0)
{
return;
}
//apply patched subQ
for (int i = 0; i < 12; i++)
{
job.DestBuffer2448[2352 + 12 + i] = Buffer_SubQ[i];
}
}