/// <summary>
/// Create a DLS from a sound font.
/// </summary>
/// <param name="sf2">The SF2 file.</param>
public DownloadableSounds(SoundFont sf2)
{
//Get waves.
List <string> waveMd5s = new List <string>();
Dictionary <int, string> newWaveIds = new Dictionary <int, string>();
Dictionary <int, sbyte> tunings = new Dictionary <int, sbyte>();
Dictionary <int, byte> origPitches = new Dictionary <int, byte>();
Dictionary <int, uint> channelFlags = new Dictionary <int, uint>();
Waves = new List <RiffWave>();
foreach (var i in sf2.Instruments)
{
foreach (var z in i.GetAllZones())
{
foreach (var g in z.Generators.Where(x => x.Gen == SF2Generators.SampleID))
{
var s = sf2.Samples[g.Amount.UAmount];
RiffWave wav = new RiffWave();
wav.Loops = s.Wave.Loops;
wav.LoopStart = s.Wave.LoopStart;
wav.LoopEnd = s.Wave.LoopEnd;
wav.SampleRate = s.Wave.SampleRate;
wav.Audio.Channels = new List <List <GotaSoundIO.Sound.Encoding.IAudioEncoding> >();
switch (s.LinkType)
{
case SF2LinkTypes.Left:
wav.Audio.Channels.Add(s.Wave.Audio.Channels[0]);
try {
wav.Audio.Channels.Add(sf2.Samples.Where(x => x.Link == s.Link && x.LinkType == SF2LinkTypes.Right).FirstOrDefault().Wave.Audio.Channels[0]);
} catch { }
if (!channelFlags.ContainsKey(g.Amount.UAmount))
{
channelFlags.Add(g.Amount.UAmount, 0b11);
}
break;
case SF2LinkTypes.Right:
try {
wav.Audio.Channels.Add(sf2.Samples.Where(x => x.Link == s.Link && x.LinkType == SF2LinkTypes.Left).FirstOrDefault().Wave.Audio.Channels[0]);
} catch { }
wav.Audio.Channels.Add(s.Wave.Audio.Channels[0]);
if (!channelFlags.ContainsKey(g.Amount.UAmount))
{
channelFlags.Add(g.Amount.UAmount, 0b11);
}
break;
case SF2LinkTypes.Mono:
wav.Audio.Channels.Add(s.Wave.Audio.Channels[0]);
if (!channelFlags.ContainsKey(g.Amount.UAmount))
{
channelFlags.Add(g.Amount.UAmount, 0b1);
}
break;
case SF2LinkTypes.Linked:
foreach (var w in sf2.Samples)
{
if (w.LinkType == SF2LinkTypes.Linked && w.Link == s.Link)
{
wav.Audio.Channels.Add(w.Wave.Audio.Channels[0]);
if (!channelFlags.ContainsKey(g.Amount.UAmount))
{
channelFlags.Add(g.Amount.UAmount, 0);
}
channelFlags[g.Amount.UAmount] <<= 1;
channelFlags[g.Amount.UAmount] |= 0b1;
}
}
break;
}
string md5 = wav.Md5Sum;
if (!newWaveIds.ContainsKey(g.Amount.UAmount))
{
newWaveIds.Add(g.Amount.UAmount, md5);
tunings.Add(g.Amount.UAmount, sf2.Samples[g.Amount.UAmount].PitchCorrection);
origPitches.Add(g.Amount.UAmount, sf2.Samples[g.Amount.UAmount].OriginalPitch);
}
if (!waveMd5s.Contains(md5))
{
waveMd5s.Add(md5);
Waves.Add(wav);
}
}
}
}
//Get instruments.
Instruments = new List <Instrument>();
int instId = 0;
foreach (var inst in sf2.Instruments)
{
//Instrument.
Instrument i = new Instrument();
i.Name = inst.Name;
i.Regions = new List <Region>();
i.BankId = 0;
foreach (var p in sf2.Presets)
{
foreach (var z in p.GetAllZones())
{
foreach (var g in z.Generators)
{
if (g.Gen == SF2Generators.Instrument && g.Amount.Amount == instId)
{
i.BankId = p.Bank;
i.InstrumentId = p.PresetNumber;
}
}
}
}
instId++;
//Get regions.
foreach (var z in inst.Zones)
{
var reg = GetInstrumentRegion(z, inst.GlobalZone);
if (reg != null)
{
i.Regions.Add(reg);
}
}
if (i.Regions.Count < 1)
{
var reg = GetInstrumentRegion(inst.GlobalZone, null);
if (reg != null)
{
i.Regions.Add(reg);
}
}
//Add instrument.
Instruments.Add(i);
}
//Get an instrument region from an SF2 zone.
Region GetInstrumentRegion(Zone z, Zone g)
{
//Null region.
if (z == null)
{
return(null);
}
//New region.
Region r = new Region();
//Get sample.
int sampleNumRaw = SF2Value(SF2Generators.SampleID).UAmount;
int sampleNum = waveMd5s.IndexOf(newWaveIds[sampleNumRaw]);
r.WaveId = (uint)sampleNum;
r.Tuning = (short)(tunings[sampleNumRaw] % 12 * 65536);
r.RootNote = (byte)(origPitches[sampleNumRaw] + tunings[sampleNumRaw] / 12);
r.ChannelFlags = channelFlags[sampleNumRaw];
r.Loops = Waves[sampleNum].Loops;
r.LoopStart = Waves[sampleNum].LoopStart;
r.LoopLength = Waves[sampleNum].LoopEnd - Waves[sampleNum].LoopStart;
Articulator art = new Articulator();
art.Connections = new List <Connection>();
var c = art.Connections;
//Get generators.
foreach (var gen in z.Generators)
{
DestinationConnection d = DestinationConnection.Center;
switch (gen.Gen)
{
case SF2Generators.OverridingRootKey:
r.RootNote = (byte)(gen.Amount.Amount + tunings[sampleNumRaw] / 12);
continue;
case SF2Generators.KeyRange:
r.NoteLow = gen.Amount.LowByte;
r.NoteHigh = gen.Amount.HighByte;
continue;
case SF2Generators.VelRange:
r.VelocityLow = gen.Amount.LowByte;
r.VelocityHigh = gen.Amount.HighByte;
continue;
case SF2Generators.ChorusEffectsSend:
d = DestinationConnection.Chorus;
break;
case SF2Generators.AttackVolEnv:
d = DestinationConnection.EG1AttackTime;
break;
case SF2Generators.DecayVolEnv:
d = DestinationConnection.EG1DecayTime;
break;
case SF2Generators.DelayVolEnv:
d = DestinationConnection.EG1DelayTime;
break;
case SF2Generators.HoldVolEnv:
d = DestinationConnection.EG1HoldTime;
break;
case SF2Generators.ReleaseVolEnv:
d = DestinationConnection.EG1ReleaseTime;
break;
case SF2Generators.SustainVolEnv:
d = DestinationConnection.EG1SustainLevel;
c.Add(new Connection()
{
DestinationConnection = d, Scale = (int)((1 - (gen.Amount.Amount / 1000d)) * 1000 * 65536)
});
continue;
case SF2Generators.Keynum:
d = DestinationConnection.KeyNumber;
break;
case SF2Generators.Pan:
d = DestinationConnection.Pan;
break;
case SF2Generators.FreqModLFO:
d = DestinationConnection.LFOFrequency;
break;
case SF2Generators.DelayModLFO:
d = DestinationConnection.LFOStartDelayTime;
break;
default:
continue;
}
c.Add(new Connection()
{
DestinationConnection = d, Scale = gen.Amount.Amount * 65536
});
}
//Get the SF2 value.
SF2GeneratorAmount SF2Value(SF2Generators gen)
{
var ret = new SF2GeneratorAmount();
if (g != null)
{
var a = g.Generators.Where(x => x.Gen == gen).FirstOrDefault();
if (a != null)
{
ret.Amount += a.Amount.Amount;
}
}
var b = z.Generators.Where(x => x.Gen == gen).FirstOrDefault();
if (b != null)
{
ret.Amount = b.Amount.Amount;
}
return(ret);
}
//Add articulators.
r.Articulators = new List <Articulator>()
{
art
};
//Return the region.
return(r);
}
}
/// <summary>
/// Read the file.
/// </summary>
/// <param name="r2">The file reader.</param>
public override void Read(FileReader r2)
{
//Use a RIFF reader.
using (RiffReader r = new RiffReader(r2.BaseStream)) {
//Get the number of instruments.
r.OpenChunk(r.GetChunk("colh"));
uint numInsts = r.ReadUInt32();
//Pointer table is skipped since it's just offsets to wave data relative to the first wave identifier.
//Read wave data.
Waves = new List <RiffWave>();
foreach (var c in (r.GetChunk("wvpl") as ListChunk).Chunks)
{
//Open block.
r.OpenChunk(c);
//Set position for proper RIFF reading.
r.BaseStream.Position -= 8;
int len = r.ReadInt32() + 8;
r.BaseStream.Position -= 8;
RiffWave wav = new RiffWave();
wav.Read(r.ReadBytes(len));
Waves.Add(wav);
}
//Read each instrument.
foreach (ListChunk c in (r.GetChunk("lins") as ListChunk).Chunks)
{
//Open block.
r.OpenChunk(c);
//New instrument.
Instrument inst = new Instrument();
//Read header.
r.OpenChunk(c.GetChunk("insh"));
r.ReadUInt32();
inst.BankId = r.ReadUInt32();
inst.InstrumentId = r.ReadUInt32();
//Read regions.
foreach (ListChunk g in (c.GetChunk("lrgn") as ListChunk).Chunks)
{
//New region.
Region reg = new Region();
//Region header.
r.OpenChunk(g.GetChunk("rgnh"));
reg.NoteLow = r.ReadUInt16();
reg.NoteHigh = r.ReadUInt16();
reg.VelocityLow = r.ReadUInt16();
reg.VelocityHigh = r.ReadUInt16();
reg.DoublePlayback = r.ReadUInt16() > 0;
reg.KeyGroup = (byte)r.ReadUInt16();
reg.Layer = r.ReadUInt16();
//Note information.
r.OpenChunk(g.GetChunk("wsmp"));
r.ReadUInt32();
reg.RootNote = (byte)r.ReadUInt16();
reg.Tuning = r.ReadInt16();
reg.Gain = r.ReadInt32();
uint flags = r.ReadUInt32();
reg.NoTruncation = (flags & 0b1) > 0;
reg.NoCompression = (flags & 0b10) > 0;
reg.Loops = r.ReadUInt32() > 0;
if (reg.Loops)
{
r.ReadUInt32();
reg.LoopAndRelease = r.ReadUInt32() > 0;
reg.LoopStart = r.ReadUInt32();
reg.LoopLength = r.ReadUInt32();
}
//Wave link.
r.OpenChunk(g.GetChunk("wlnk"));
uint flg = r.ReadUInt16();
reg.PhaseMaster = (flg & 0b1) > 0;
reg.MultiChannel = (flg & 0b10) > 0;
reg.PhaseGroup = r.ReadUInt16();
reg.ChannelFlags = r.ReadUInt32();
reg.WaveId = r.ReadUInt32();
//Loop.
Waves[(int)reg.WaveId].Loops = reg.Loops;
if (reg.Loops)
{
Waves[(int)reg.WaveId].LoopStart = reg.LoopStart;
Waves[(int)reg.WaveId].LoopEnd = reg.LoopLength == 0 ? (uint)Waves[(int)reg.WaveId].Audio.NumSamples : reg.LoopStart + reg.LoopLength;
}
//Articulators.
var lar = g.GetChunk("lar2");
if (lar == null)
{
lar = g.GetChunk("lar1");
}
foreach (Chunk art in (g.GetChunk("lar2") as ListChunk).Chunks)
{
//Read articulator.
Articulator a = new Articulator();
r.OpenChunk(art);
r.ReadUInt32();
uint numCons = r.ReadUInt32();
for (uint i = 0; i < numCons; i++)
{
Connection con = new Connection();
con.SourceConnection = (SourceConnection)r.ReadUInt16();
con.ControlConnection = r.ReadUInt16();
con.DestinationConnection = (DestinationConnection)r.ReadUInt16();
con.TransformConnection = (TransformConnection)r.ReadUInt16();
con.Scale = r.ReadInt32();
a.Connections.Add(con);
}
reg.Articulators.Add(a);
}
//Add region.
inst.Regions.Add(reg);
}
//Read name.
var info = c.GetChunk("INFO");
if (info != null)
{
var inam = (info as ListChunk).GetChunk("INAM");
if (inam != null)
{
r.OpenChunk(inam);
r.BaseStream.Position -= 4;
uint siz = r.ReadUInt32();
inst.Name = new string(r.ReadChars((int)siz).Where(x => x != 0).ToArray());
}
}
//Add instrument.
Instruments.Add(inst);
}
}
}
