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
CUE.CueTrackType TrackType = CUE.CueTrackType.Audio;
if (ses.LeadoutTrack.IsData)
{
if (job.Disc.TOC.Session1Format == SessionFormat.Type20_CDXA || job.Disc.TOC.Session1Format == SessionFormat.Type10_CDI)
{
TrackType = CUE.CueTrackType.Mode2_2352;
}
else
{
TrackType = CUE.CueTrackType.Mode1_2352;
}
}
CUE.SS_Gap ss_gap = new CUE.SS_Gap()
{
Policy = Policy,
sq = sq,
TrackType = TrackType,
Pause = true //?
};
ss_gap.Synth(job);
}
/// <summary>appends the new entries to the provided list</summary>
/// <exception cref="InvalidOperationException"><see cref="IN_Session1Format"/> is <see cref="SessionFormat.None"/> or a non-member</exception>
public void Run(List <RawTOCEntry> entries)
{
//NOTE: entries are inserted at the beginning due to observations of CCD indicating they might need to be that way
//Since I'm being asked to synthesize them here, I guess I can put them in whatever order I want, can't I?
SubchannelQ sq = new SubchannelQ();
//ADR (q-Mode) is necessarily 0x01 for a RawTOCEntry
const int kADR = 1;
const int kUnknownControl = 0;
sq.SetStatus(kADR, (EControlQ)kUnknownControl);
//first recorded track number:
sq.q_index.BCDValue = 0xA0;
sq.ap_min.DecimalValue = IN_FirstRecordedTrackNumber;
switch (IN_Session1Format)
{
//TODO these probably shouldn't be decimal values
case SessionFormat.Type00_CDROM_CDDA: sq.ap_sec.DecimalValue = 0x00; break;
case SessionFormat.Type10_CDI: sq.ap_sec.DecimalValue = 0x10; break;
case SessionFormat.Type20_CDXA: sq.ap_sec.DecimalValue = 0x20; break;
default: throw new InvalidOperationException("Invalid Session1Format");
}
sq.ap_frame.DecimalValue = 0;
entries.Insert(0, new RawTOCEntry {
QData = sq
});
//last recorded track number:
sq.q_index.BCDValue = 0xA1;
sq.ap_min.DecimalValue = IN_LastRecordedTrackNumber;
sq.ap_sec.DecimalValue = 0;
sq.ap_frame.DecimalValue = 0;
entries.Insert(1, new RawTOCEntry {
QData = sq
});
//leadout:
sq.q_index.BCDValue = 0xA2;
sq.AP_Timestamp = IN_LeadoutTimestamp;
entries.Insert(2, new RawTOCEntry {
QData = sq
});
}
/// <summary>
/// Appends the new entries to the provided list
/// </summary>
public void Run(List<RawTOCEntry> entries)
{
//NOTE: entries are inserted at the beginning due to observations of CCD indicating they might need to be that way
//Since I'm being asked to synthesize them here, I guess I can put them in whatever order I want, can't I?
SubchannelQ sq = new SubchannelQ();
//ADR (q-Mode) is necessarily 0x01 for a RawTOCEntry
const int kADR = 1;
const int kUnknownControl = 0;
sq.SetStatus(kADR, (EControlQ)kUnknownControl);
//first recorded track number:
sq.q_index.BCDValue = 0xA0;
sq.ap_min.DecimalValue = IN_FirstRecordedTrackNumber;
switch(IN_Session1Format)
{
//TODO these probably shouldn't be decimal values
case SessionFormat.Type00_CDROM_CDDA: sq.ap_sec.DecimalValue = 0x00; break;
case SessionFormat.Type10_CDI: sq.ap_sec.DecimalValue = 0x10; break;
case SessionFormat.Type20_CDXA: sq.ap_sec.DecimalValue = 0x20; break;
default: throw new InvalidOperationException("Invalid Session1Format");
}
sq.ap_frame.DecimalValue = 0;
entries.Insert(0, new RawTOCEntry { QData = sq });
//last recorded track number:
sq.q_index.BCDValue = 0xA1;
sq.ap_min.DecimalValue = IN_LastRecordedTrackNumber;
sq.ap_sec.DecimalValue = 0;
sq.ap_frame.DecimalValue = 0;
entries.Insert(1, new RawTOCEntry { QData = sq });
//leadout:
sq.q_index.BCDValue = 0xA2;
sq.AP_Timestamp = IN_LeadoutTimestamp;
entries.Insert(2, new RawTOCEntry { QData = sq });
}
public void Run()
{
//TODO: encode_mode2_form2_sector
var leadoutTs = Disc.TOC.LeadoutLBA;
var lastTrackTOCItem = Disc.TOC.TOCItems[Disc.TOC.LastRecordedTrackNumber]; //NOTE: in case LastRecordedTrackNumber is al ie, this will malfunction
//leadout flags.. let's set them the same as the last track.
//THIS IS NOT EXACTLY THE SAME WAY MEDNAFEN DOES IT
EControlQ leadoutFlags = lastTrackTOCItem.Control;
//TODO - needs to be encoded as a certain mode (mode 2 form 2 for psx... i guess...)
for (int i = 0; i < Length; i++)
{
//var se = new SectorEntry(sz);
//Disc.Sectors.Add(se);
SubchannelQ sq = new SubchannelQ();
int track_relative_msf = i;
sq.min = BCD2.FromDecimal(new Timestamp(track_relative_msf).MIN);
sq.sec = BCD2.FromDecimal(new Timestamp(track_relative_msf).SEC);
sq.frame = BCD2.FromDecimal(new Timestamp(track_relative_msf).FRAC);
int absolute_msf = i + leadoutTs.Sector;
sq.ap_min = BCD2.FromDecimal(new Timestamp(absolute_msf + 150).MIN);
sq.ap_sec = BCD2.FromDecimal(new Timestamp(absolute_msf + 150).SEC);
sq.ap_frame = BCD2.FromDecimal(new Timestamp(absolute_msf + 150).FRAC);
sq.q_tno.DecimalValue = 0xAA; //special value for leadout
sq.q_index.DecimalValue = 1;
byte ADR = 1;
sq.SetStatus(ADR, leadoutFlags);
//TODO - actually stash the subQ
}
}
public void Run()
{
//TODO: encode_mode2_form2_sector
var leadoutTs = Disc.TOC.LeadoutLBA;
var lastTrackTOCItem = Disc.TOC.TOCItems[Disc.TOC.LastRecordedTrackNumber]; //NOTE: in case LastRecordedTrackNumber is al ie, this will malfunction
//leadout flags.. let's set them the same as the last track.
//THIS IS NOT EXACTLY THE SAME WAY MEDNAFEN DOES IT
EControlQ leadoutFlags = lastTrackTOCItem.Control;
//TODO - needs to be encoded as a certain mode (mode 2 form 2 for psx... i guess...)
for (int i = 0; i < Length; i++)
{
//var se = new SectorEntry(sz);
//Disc.Sectors.Add(se);
SubchannelQ sq = new SubchannelQ();
int track_relative_msf = i;
sq.min = BCD2.FromDecimal(new Timestamp(track_relative_msf).MIN);
sq.sec = BCD2.FromDecimal(new Timestamp(track_relative_msf).SEC);
sq.frame = BCD2.FromDecimal(new Timestamp(track_relative_msf).FRAC);
int absolute_msf = i + leadoutTs;
sq.ap_min = BCD2.FromDecimal(new Timestamp(absolute_msf + 150).MIN);
sq.ap_sec = BCD2.FromDecimal(new Timestamp(absolute_msf + 150).SEC);
sq.ap_frame = BCD2.FromDecimal(new Timestamp(absolute_msf + 150).FRAC);
sq.q_tno.DecimalValue = 0xAA; //special value for leadout
sq.q_index.DecimalValue = 1;
byte ADR = 1;
sq.SetStatus(ADR, leadoutFlags);
//TODO - actually stash the subQ
}
}
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
CUE.CueTrackType TrackType = CUE.CueTrackType.Audio;
if (ses.LeadoutTrack.IsData)
{
if (job.Disc.TOC.Session1Format == SessionFormat.Type20_CDXA || job.Disc.TOC.Session1Format == SessionFormat.Type10_CDI)
TrackType = CUE.CueTrackType.Mode2_2352;
else
TrackType = CUE.CueTrackType.Mode1_2352;
}
CUE.SS_Gap ss_gap = new CUE.SS_Gap()
{
Policy = Policy,
sq = sq,
TrackType = TrackType,
Pause = true //?
};
ss_gap.Synth(job);
}
