/// <summary>
/// Generates the Points list from the current TOC
/// </summary>
public void GeneratePoints()
{
int num = 0;
Points.Clear();
foreach (var ses in Sessions)
{
foreach (var track in ses.Tracks)
{
foreach (var index in track.Indexes)
{
var tp = new TOCPoint
{
Num = num++,
ABA = index.aba,
TrackNum = track.num,
IndexNum = index.num,
Track = track
};
Points.Add(tp);
}
}
var tpLeadout = new TOCPoint();
var lastTrack = ses.Tracks[ses.Tracks.Count - 1];
tpLeadout.Num = num++;
tpLeadout.ABA = lastTrack.Indexes[1].aba + lastTrack.length_aba;
tpLeadout.IndexNum = 0;
tpLeadout.TrackNum = 100;
tpLeadout.Track = null; //no leadout track.. now... or ever?
Points.Add(tpLeadout);
}
}
/// <summary>
/// seeks the point immediately before (or equal to) this LBA
/// </summary>
public TOCPoint SeekPoint(int lba)
{
int aba = lba + 150;
for (int i = 0; i < Points.Count; i++)
{
TOCPoint tp = Points[i];
if (tp.ABA > aba)
{
return(Points[i - 1]);
}
}
return(Points[Points.Count - 1]);
}
/// <summary>
/// Generates the Points list from the current logical TOC
/// </summary>
public void Synthesize_TOCPointsFromSessions()
{
Points = new List <TOCPoint>();
int num = 0;
foreach (var ses in Sessions)
{
for (int t = 0; t < ses.Tracks.Count; t++)
{
int tnum = t + 1;
var track = ses.Tracks[t];
for (int i = 0; i < track.Indexes.Count; i++)
{
var index = track.Indexes[i];
bool repeat = false;
int aba = index.aba;
REPEAT:
var tp = new TOCPoint
{
Num = num++,
ABA = aba,
TrackNum = track.Number,
IndexNum = index.Number,
Track = track,
ADR = track.ADR,
Control = track.Control
};
//special case!
//yellow-book says:
//pre-gap for "first part of a digital data track not containing user data and encoded as a pause"
//first interval: at least 75 sectors coded as preceding track
//second interval: at least 150 sectors coded as user data track.
//TODO - add pause flag tracking to TOCPoint
//see mednafen's "TODO: Look into how we're supposed to handle subq control field in the four combinations of track types(data/audio)."
if (tnum != 1 && i == 0 && track.TrackType != ETrackType.Audio && !repeat)
{
//NOTE: we dont implement this exactly the same as mednafen, I think my logic is closer to the docs, but who knows, its complicated
int distance = track.Indexes[i + 1].aba - track.Indexes[i].aba;
//well, how do we know to apply this logic?
//we assume the 150 sector pregap is more important. so if thats all there is, theres no 75 sector pregap like the old track
//if theres a longer pregap, then we generate weird old track pregap to contain the rest.
if (distance > 150)
{
int weirdPregapSize = distance - 150;
//need a new point. fix the old one
tp.ADR = Points[Points.Count - 1].ADR;
tp.Control = Points[Points.Count - 1].Control;
Points.Add(tp);
aba += weirdPregapSize;
repeat = true;
goto REPEAT;
}
}
Points.Add(tp);
}
}
var tpLeadout = new TOCPoint();
var lastTrack = ses.Tracks[ses.Tracks.Count - 1];
tpLeadout.Num = num++;
tpLeadout.ABA = lastTrack.Indexes[1].aba + lastTrack.LengthInSectors;
tpLeadout.IndexNum = 0;
tpLeadout.TrackNum = 100;
tpLeadout.Track = null; //no leadout track.. now... or ever?
Points.Add(tpLeadout);
}
}
/// <summary>
/// Generates the Points list from the current logical TOC
/// </summary>
public void SynthesizeTOCPointsFromSessions()
{
int num = 0;
Points.Clear();
foreach (var ses in Sessions)
{
foreach (var track in ses.Tracks)
foreach (var index in track.Indexes)
{
var tp = new TOCPoint
{
Num = num++,
ABA = index.aba,
TrackNum = track.num,
IndexNum = index.num,
Track = track
};
Points.Add(tp);
}
var tpLeadout = new TOCPoint();
var lastTrack = ses.Tracks[ses.Tracks.Count - 1];
tpLeadout.Num = num++;
tpLeadout.ABA = lastTrack.Indexes[1].aba + lastTrack.length_aba;
tpLeadout.IndexNum = 0;
tpLeadout.TrackNum = 100;
tpLeadout.Track = null; //no leadout track.. now... or ever?
Points.Add(tpLeadout);
}
}
/// <summary>
/// Generates the Points list from the current logical TOC
/// </summary>
public void Synthesize_TOCPointsFromSessions()
{
Points = new List<TOCPoint>();
int num = 0;
foreach (var ses in Sessions)
{
for(int t=0;t<ses.Tracks.Count;t++)
{
int tnum = t + 1;
var track = ses.Tracks[t];
for(int i=0;i<track.Indexes.Count;i++)
{
var index = track.Indexes[i];
bool repeat = false;
int aba = index.aba;
REPEAT:
var tp = new TOCPoint
{
Num = num++,
ABA = aba,
TrackNum = track.Number,
IndexNum = index.Number,
Track = track,
ADR = track.ADR,
Control = track.Control
};
//special case!
//yellow-book says:
//pre-gap for "first part of a digital data track not containing user data and encoded as a pause"
//first interval: at least 75 sectors coded as preceding track
//second interval: at least 150 sectors coded as user data track.
//TODO - add pause flag tracking to TOCPoint
//see mednafen's "TODO: Look into how we're supposed to handle subq control field in the four combinations of track types(data/audio)."
if (tnum != 1 && i == 0 && track.TrackType != ETrackType.Audio && !repeat)
{
//NOTE: we dont implement this exactly the same as mednafen, I think my logic is closer to the docs, but who knows, its complicated
int distance = track.Indexes[i + 1].aba - track.Indexes[i].aba;
//well, how do we know to apply this logic?
//we assume the 150 sector pregap is more important. so if thats all there is, theres no 75 sector pregap like the old track
//if theres a longer pregap, then we generate weird old track pregap to contain the rest.
if (distance > 150)
{
int weirdPregapSize = distance - 150;
//need a new point. fix the old one
tp.ADR = Points[Points.Count - 1].ADR;
tp.Control = Points[Points.Count - 1].Control;
Points.Add(tp);
aba += weirdPregapSize;
repeat = true;
goto REPEAT;
}
}
Points.Add(tp);
}
}
var tpLeadout = new TOCPoint();
var lastTrack = ses.Tracks[ses.Tracks.Count - 1];
tpLeadout.Num = num++;
tpLeadout.ABA = lastTrack.Indexes[1].aba + lastTrack.LengthInSectors;
tpLeadout.IndexNum = 0;
tpLeadout.TrackNum = 100;
tpLeadout.Track = null; //no leadout track.. now... or ever?
Points.Add(tpLeadout);
}
}
