public static BufferedSubcodeSector CloneFromBytesDeinterleaved(byte[] buffer)
{
var ret = new BufferedSubcodeSector();
Buffer.BlockCopy(buffer, 0, ret.SubcodeDeinterleaved, 0, 96);
return(ret);
}
/// <summary>
/// applies an SBI file to the disc
/// </summary>
public void ApplySBI(SBI_Format.SBIFile sbi)
{
//save this, it's small, and we'll want it for disc processing a/b checks
Memos["sbi"] = sbi;
int n = sbi.ABAs.Count;
byte[] subcode = new byte[96];
int b = 0;
for (int i = 0; i < n; i++)
{
int aba = sbi.ABAs[i];
var oldSubcode = this.Sectors[aba].SubcodeSector;
oldSubcode.ReadSubcodeDeinterleaved(subcode, 0);
for (int j = 0; j < 12; j++)
{
short patch = sbi.subq[b++];
if (patch == -1)
{
continue;
}
else
{
subcode[12 + j] = (byte)patch;
}
}
var bss = new BufferedSubcodeSector();
Sectors[aba].SubcodeSector = BufferedSubcodeSector.CloneFromBytesDeinterleaved(subcode);
}
}
/// <summary>
/// Creates the subcode (really, just subchannel Q) for this disc from its current TOC.
/// Depends on the TOCPoints existing in the structure
/// TODO - do we need a fully 0xFF P-subchannel for PSX?
/// </summary>
void Synthesize_SubcodeFromStructure()
{
int aba = 0;
int dpIndex = 0;
//TODO - from mednafen (on PC-FX chip chan kick)
//If we're more than 2 seconds(150 sectors) from the real "start" of the track/INDEX 01, and the track is a data track,
//and the preceding track is an audio track, encode it as audio(by taking the SubQ control field from the preceding
//NOTE: discs may have subcode which is nonsense or possibly not recoverable from a sensible disc structure.
//but this function does what it says.
//SO: heres the main idea of how this works.
//we have the Structure.Points (whose name we dont like) which is a list of sectors where the tno/index changes.
//So for each sector, we see if we've advanced to the next point.
//TODO - check if this is synthesized correctly when producing a structure from a TOCRaw
while (aba < Sectors.Count)
{
if (dpIndex < Structure.Points.Count - 1)
{
while (aba >= Structure.Points[dpIndex + 1].ABA)
{
dpIndex++;
}
}
var dp = Structure.Points[dpIndex];
var se = Sectors[aba];
EControlQ control = dp.Control;
bool pause = true;
if (dp.Num != 0) //TODO - shouldnt this be IndexNum?
pause = false;
if ((dp.Control & EControlQ.DataUninterrupted)!=0)
pause = false;
int adr = dp.ADR;
SubchannelQ sq = new SubchannelQ();
sq.q_status = SubchannelQ.ComputeStatus(adr, control);
sq.q_tno = BCD2.FromDecimal(dp.TrackNum).BCDValue;
sq.q_index = BCD2.FromDecimal(dp.IndexNum).BCDValue;
int track_relative_aba = aba - dp.Track.Indexes[1].aba;
track_relative_aba = Math.Abs(track_relative_aba);
Timestamp track_relative_timestamp = new Timestamp(track_relative_aba);
sq.min = BCD2.FromDecimal(track_relative_timestamp.MIN);
sq.sec = BCD2.FromDecimal(track_relative_timestamp.SEC);
sq.frame = BCD2.FromDecimal(track_relative_timestamp.FRAC);
sq.zero = 0;
Timestamp absolute_timestamp = new Timestamp(aba);
sq.ap_min = BCD2.FromDecimal(absolute_timestamp.MIN);
sq.ap_sec = BCD2.FromDecimal(absolute_timestamp.SEC);
sq.ap_frame = BCD2.FromDecimal(absolute_timestamp.FRAC);
var bss = new BufferedSubcodeSector();
bss.Synthesize_SubchannelQ(ref sq, true);
//TEST: need this for psx?
if(pause) bss.Synthesize_SubchannelP(true);
se.SubcodeSector = bss;
aba++;
}
}
/// <summary>
/// applies an SBI file to the disc
/// </summary>
public void ApplySBI(SBI_Format.SBIFile sbi)
{
//save this, it's small, and we'll want it for disc processing a/b checks
Memos["sbi"] = sbi;
int n = sbi.ABAs.Count;
byte[] subcode = new byte[96];
int b=0;
for (int i = 0; i < n; i++)
{
int aba = sbi.ABAs[i];
var oldSubcode = this.Sectors[aba].SubcodeSector;
oldSubcode.ReadSubcodeDeinterleaved(subcode, 0);
for (int j = 0; j < 12; j++)
{
short patch = sbi.subq[b++];
if (patch == -1) continue;
else subcode[12 + j] = (byte)patch;
}
var bss = new BufferedSubcodeSector();
Sectors[aba].SubcodeSector = BufferedSubcodeSector.CloneFromBytesDeinterleaved(subcode);
}
}
public static BufferedSubcodeSector CloneFromBytesDeinterleaved(byte[] buffer)
{
var ret = new BufferedSubcodeSector();
Buffer.BlockCopy(buffer, 0, ret.SubcodeDeinterleaved, 0, 96);
return ret;
}
/// <summary>
/// Creates the subcode (really, just subchannel Q) for this disc from its current TOC.
/// Depends on the TOCPoints existing in the structure
/// TODO - do we need a fully 0xFF P-subchannel for PSX?
/// </summary>
void Synthesize_SubcodeFromStructure()
{
int aba = 0;
int dpIndex = 0;
//TODO - from mednafen (on PC-FX chip chan kick)
//If we're more than 2 seconds(150 sectors) from the real "start" of the track/INDEX 01, and the track is a data track,
//and the preceding track is an audio track, encode it as audio(by taking the SubQ control field from the preceding
//NOTE: discs may have subcode which is nonsense or possibly not recoverable from a sensible disc structure.
//but this function does what it says.
//SO: heres the main idea of how this works.
//we have the Structure.Points (whose name we dont like) which is a list of sectors where the tno/index changes.
//So for each sector, we see if we've advanced to the next point.
//TODO - check if this is synthesized correctly when producing a structure from a TOCRaw
while (aba < Sectors.Count)
{
if (dpIndex < Structure.Points.Count - 1)
{
while (aba >= Structure.Points[dpIndex + 1].ABA)
{
dpIndex++;
}
}
var dp = Structure.Points[dpIndex];
var se = Sectors[aba];
EControlQ control = dp.Control;
bool pause = true;
if (dp.Num != 0) //TODO - shouldnt this be IndexNum?
{
pause = false;
}
if ((dp.Control & EControlQ.DataUninterrupted) != 0)
{
pause = false;
}
int adr = dp.ADR;
SubchannelQ sq = new SubchannelQ();
sq.q_status = SubchannelQ.ComputeStatus(adr, control);
sq.q_tno = BCD2.FromDecimal(dp.TrackNum).BCDValue;
sq.q_index = BCD2.FromDecimal(dp.IndexNum).BCDValue;
int track_relative_aba = aba - dp.Track.Indexes[1].aba;
track_relative_aba = Math.Abs(track_relative_aba);
Timestamp track_relative_timestamp = new Timestamp(track_relative_aba);
sq.min = BCD2.FromDecimal(track_relative_timestamp.MIN);
sq.sec = BCD2.FromDecimal(track_relative_timestamp.SEC);
sq.frame = BCD2.FromDecimal(track_relative_timestamp.FRAC);
sq.zero = 0;
Timestamp absolute_timestamp = new Timestamp(aba);
sq.ap_min = BCD2.FromDecimal(absolute_timestamp.MIN);
sq.ap_sec = BCD2.FromDecimal(absolute_timestamp.SEC);
sq.ap_frame = BCD2.FromDecimal(absolute_timestamp.FRAC);
var bss = new BufferedSubcodeSector();
bss.Synthesize_SubchannelQ(ref sq, true);
//TEST: need this for psx?
if (pause)
{
bss.Synthesize_SubchannelP(true);
}
se.SubcodeSector = bss;
aba++;
}
}
/// <summary>
/// Loads a CCD at the specified path to a Disc object
/// </summary>
public Disc LoadCCDToDisc(string ccdPath)
{
var loadResults = LoadCCDPath(ccdPath);
if (!loadResults.Valid)
{
throw loadResults.FailureException;
}
Disc disc = new Disc();
var ccdf = loadResults.ParsedCCDFile;
var imgBlob = new Disc.Blob_RawFile()
{
PhysicalPath = loadResults.ImgPath
};
var subBlob = new Disc.Blob_RawFile()
{
PhysicalPath = loadResults.SubPath
};
disc.Blobs.Add(imgBlob);
disc.Blobs.Add(subBlob);
//generate DiscTOCRaw items from the ones specified in the CCD file
//TODO - range validate these (too many truncations to byte)
disc.RawTOCEntries = new List <RawTOCEntry>();
BufferedSubcodeSector bss = new BufferedSubcodeSector();
foreach (var entry in ccdf.TOCEntries)
{
var q = new SubchannelQ
{
q_status = SubchannelQ.ComputeStatus(entry.ADR, (EControlQ)(entry.Control & 0xF)),
q_tno = (byte)entry.TrackNo,
q_index = (byte)entry.Point,
min = BCD2.FromDecimal(entry.AMin),
sec = BCD2.FromDecimal(entry.ASec),
frame = BCD2.FromDecimal(entry.AFrame),
zero = (byte)entry.Zero,
ap_min = BCD2.FromDecimal(entry.PMin),
ap_sec = BCD2.FromDecimal(entry.PSec),
ap_frame = BCD2.FromDecimal(entry.PFrame),
};
//CRC cant be calculated til we've got all the fields setup
q.q_crc = bss.Synthesize_SubchannelQ(ref q, true);
disc.RawTOCEntries.Add(new RawTOCEntry {
QData = q
});
}
//generate the toc from the entries
var tocSynth = new DiscTOCRaw.SynthesizeFromRawTOCEntriesJob()
{
Entries = disc.RawTOCEntries
};
tocSynth.Run();
disc.TOCRaw = tocSynth.Result;
//synthesize DiscStructure
var structureSynth = new DiscStructure.SynthesizeFromDiscTOCRawJob()
{
TOCRaw = disc.TOCRaw
};
structureSynth.Run();
disc.Structure = structureSynth.Result;
//I *think* implicitly there is an index 0.. at.. i dunno, 0 maybe, for track 1
{
var dsi0 = new DiscStructure.Index();
dsi0.LBA = 0;
dsi0.Number = 0;
disc.Structure.Sessions[0].Tracks[0].Indexes.Add(dsi0);
}
//now, how to get the track types for the DiscStructure?
//1. the CCD tells us (somehow the reader has judged)
//2. scan it out of the Q subchannel
//lets choose1.
//TODO - better consider how to handle the situation where we have havent received all the [TRACK] items we need
foreach (var st in disc.Structure.Sessions[0].Tracks)
{
var ccdt = ccdf.TracksByNumber[st.Number];
switch (ccdt.Mode)
{
case 0:
st.TrackType = ETrackType.Audio; //for CCD, this means audio, apparently.
break;
case 1:
st.TrackType = ETrackType.Mode1_2352;
break;
case 2:
st.TrackType = ETrackType.Mode2_2352;
break;
default:
throw new InvalidOperationException("Unsupported CCD mode");
}
//add indexes for this track
foreach (var ccdi in ccdt.Indexes)
{
var dsi = new DiscStructure.Index();
//if (ccdi.Key == 0) continue;
dsi.LBA = ccdi.Value;
dsi.Number = ccdi.Key;
st.Indexes.Add(dsi);
}
}
//add sectors for the lead-in, which isn't stored in the CCD file, I think
//TODO - synthesize lead-in sectors from TOC, if the lead-in isn't available.
//need a test case for that though.
var leadin_sector_zero = new Sector_Zero();
var leadin_subcode_zero = new ZeroSubcodeSector();
for (int i = 0; i < 150; i++)
{
var se = new SectorEntry(leadin_sector_zero);
disc.Sectors.Add(se);
se.SubcodeSector = leadin_subcode_zero;
}
//build the sectors:
//set up as many sectors as we have img/sub for, even if the TOC doesnt reference them (TOC is unreliable, although the tracks should have covered it all)
for (int i = 0; i < loadResults.NumImgSectors; i++)
{
var isec = new Sector_RawBlob();
isec.Offset = ((long)i) * 2352;
isec.Blob = imgBlob;
var se = new SectorEntry(isec);
disc.Sectors.Add(se);
var scsec = new BlobSubcodeSectorPreDeinterleaved();
scsec.Offset = ((long)i) * 96;
scsec.Blob = subBlob;
se.SubcodeSector = scsec;
}
return(disc);
}
