public PresetHeaderChunk(string id, int size, IReadable input)
: base(id, size)
{
if (size % 38 != 0)
{
throw new Exception("Invalid SoundFont. The preset chunk was invalid.");
}
_rawPresets = new RawPreset[((int)(size / 38.0))];
RawPreset lastPreset = null;
for (int x = 0; x < _rawPresets.Length; x++)
{
var p = new RawPreset();
p.Name = input.Read8BitStringLength(20);
p.PatchNumber = input.ReadUInt16LE();
p.BankNumber = input.ReadUInt16LE();
p.StartPresetZoneIndex = input.ReadUInt16LE();
p.Library = input.ReadInt32LE();
p.Genre = input.ReadInt32LE();
p.Morphology = input.ReadInt32LE();
if (lastPreset != null)
{
lastPreset.EndPresetZoneIndex = Platform.Platform.ToUInt16((p.StartPresetZoneIndex - 1));
}
_rawPresets[x] = p;
lastPreset = p;
}
}
public SoundFontSampleData(IReadable input)
{
var id = input.Read8BitChars(4);
var size = input.ReadInt32LE();
if (id.ToLower() != "list")
throw new Exception("Invalid soundfont. Could not find sdta LIST chunk.");
var readTo = input.Position + size;
id = input.Read8BitChars(4);
if (id.ToLower() != "sdta")
throw new Exception("Invalid soundfont. The LIST chunk is not of type sdta.");
BitsPerSample = 0;
byte[] rawSampleData = null;
while (input.Position < readTo)
{
var subID = input.Read8BitChars(4);
size = input.ReadInt32LE();
switch (subID.ToLower())
{
case "smpl":
BitsPerSample = 16;
rawSampleData = input.ReadByteArray(size);
break;
case "sm24":
if (rawSampleData == null || size != Math.Ceiling(SampleData.Length / 2.0))
{//ignore this chunk if wrong size or if it comes first
input.Skip(size);
}
else
{
BitsPerSample = 24;
for (var x = 0; x < SampleData.Length; x++)
{
var b = new byte[3];
b[0] = (byte)input.ReadByte();
b[1] = rawSampleData[2 * x];
b[2] = rawSampleData[2 * x + 1];
}
}
if (size % 2 == 1)
{
if (input.ReadByte() != 0)
{
input.Position--;
}
}
break;
default:
throw new Exception("Invalid soundfont. Unknown chunk id: " + subID + ".");
}
}
if (BitsPerSample == 16)
{
SampleData = rawSampleData;
}
else if (BitsPerSample != 24)
throw new Exception("Only 16 and 24 bit samples are supported.");
}
public PresetHeaderChunk(string id, int size, IReadable input)
: base(id, size)
{
if (size % 38 != 0)
throw new Exception("Invalid SoundFont. The preset chunk was invalid.");
_rawPresets = new RawPreset[((int)(size / 38.0))];
RawPreset lastPreset = null;
for (int x = 0; x < _rawPresets.Length; x++)
{
var p = new RawPreset();
p.Name = input.Read8BitStringLength(20);
p.PatchNumber = input.ReadUInt16LE();
p.BankNumber = input.ReadUInt16LE();
p.StartPresetZoneIndex = input.ReadUInt16LE();
p.Library = input.ReadInt32LE();
p.Genre = input.ReadInt32LE();
p.Morphology = input.ReadInt32LE();
if (lastPreset != null)
{
lastPreset.EndPresetZoneIndex = TypeUtils.ToUInt16((p.StartPresetZoneIndex - 1));
}
_rawPresets[x] = p;
lastPreset = p;
}
}
public SampleHeader(IReadable input)
{
Name = input.Read8BitStringLength(20);
Start = input.ReadInt32LE();
End = input.ReadInt32LE();
StartLoop = input.ReadInt32LE();
EndLoop = input.ReadInt32LE();
SampleRate = input.ReadInt32LE();
RootKey = (byte) input.ReadByte();
Tune = TypeUtils.ToInt16(input.ReadByte());
SampleLink = input.ReadUInt16LE();
SoundFontSampleLink = (SFSampleLink) input.ReadUInt16LE();
}
public SampleHeader(IReadable input)
{
Name = input.Read8BitStringLength(20);
Start = input.ReadInt32LE();
End = input.ReadInt32LE();
StartLoop = input.ReadInt32LE();
EndLoop = input.ReadInt32LE();
SampleRate = input.ReadInt32LE();
RootKey = (byte)input.ReadByte();
Tune = Platform.Platform.ToInt16(input.ReadByte());
SampleLink = input.ReadUInt16LE();
SoundFontSampleLink = (SFSampleLink)input.ReadUInt16LE();
}
/// <summary>
/// Reads an integer as size, skips a byte and reads the string itself
/// </summary>
/// <returns></returns>
public static string GpReadStringIntByte(this IReadable data)
{
var length = data.ReadInt32LE() - 1;
data.ReadByte();
return(data.GpReadString(length));
}
public void Load(IReadable input)
{
var id = input.Read8BitChars(4);
var size = input.ReadInt32LE();
if (id.ToLower() != "riff")
throw new Exception("Invalid soundfont. Could not find RIFF header.");
id = input.Read8BitChars(4);
if (id.ToLower() != "sfbk")
throw new Exception("Invalid soundfont. Riff type is invalid.");
Logger.Debug("Reading info chunk");
Info = new SoundFontInfo(input);
Logger.Debug("Reading sampledata chunk");
SampleData = new SoundFontSampleData(input);
Logger.Debug("Reading preset chunk");
Presets = new SoundFontPresets(input);
}
public void Load(IReadable input)
{
var id = input.Read8BitChars(4);
var size = input.ReadInt32LE();
if (id.ToLower() != "riff")
{
throw new Exception("Invalid soundfont. Could not find RIFF header.");
}
id = input.Read8BitChars(4);
if (id.ToLower() != "sfbk")
{
throw new Exception("Invalid soundfont. Riff type is invalid.");
}
Logger.Debug("SF2", "Reading info chunk");
Info = new SoundFontInfo(input);
Logger.Debug("SF2", "Reading sampledata chunk");
SampleData = new SoundFontSampleData(input);
Logger.Debug("SF2", "Reading preset chunk");
Presets = new SoundFontPresets(input);
}
public SoundFontSampleData(IReadable input)
{
var id = input.Read8BitChars(4);
var size = input.ReadInt32LE();
if (id.ToLower() != "list")
{
throw new Exception("Invalid soundfont. Could not find sdta LIST chunk.");
}
var readTo = input.Position + size;
id = input.Read8BitChars(4);
if (id.ToLower() != "sdta")
{
throw new Exception("Invalid soundfont. The LIST chunk is not of type sdta.");
}
BitsPerSample = 0;
byte[] rawSampleData = null;
while (input.Position < readTo)
{
var subID = input.Read8BitChars(4);
size = input.ReadInt32LE();
switch (subID.ToLower())
{
case "smpl":
BitsPerSample = 16;
rawSampleData = input.ReadByteArray(size);
break;
case "sm24":
if (rawSampleData == null || size != Math.Ceiling(SampleData.Length / 2.0))
{ //ignore this chunk if wrong size or if it comes first
input.Skip(size);
}
else
{
BitsPerSample = 24;
for (var x = 0; x < SampleData.Length; x++)
{
var b = new byte[3];
b[0] = (byte)input.ReadByte();
b[1] = rawSampleData[2 * x];
b[2] = rawSampleData[2 * x + 1];
}
}
if (size % 2 == 1)
{
if (input.ReadByte() != 0)
{
input.Position--;
}
}
break;
default:
throw new Exception("Invalid soundfont. Unknown chunk id: " + subID + ".");
}
}
if (BitsPerSample == 16)
{
SampleData = rawSampleData;
}
else if (BitsPerSample != 24)
{
throw new Exception("Only 16 and 24 bit samples are supported.");
}
}
public SoundFontPresets(IReadable input)
{
var id = input.Read8BitChars(4);
var size = input.ReadInt32LE();
if (id.ToLower() != "list")
{
throw new Exception("Invalid soundfont. Could not find pdta LIST chunk.");
}
var readTo = input.Position + size;
id = input.Read8BitChars(4);
if (id.ToLower() != "pdta")
{
throw new Exception("Invalid soundfont. The LIST chunk is not of type pdta.");
}
Modulator[] presetModulators = null;
Generator[] presetGenerators = null;
Modulator[] instrumentModulators = null;
Generator[] instrumentGenerators = null;
ZoneChunk pbag = null;
ZoneChunk ibag = null;
PresetHeaderChunk phdr = null;
InstrumentChunk inst = null;
while (input.Position < readTo)
{
id = input.Read8BitChars(4);
size = input.ReadInt32LE();
switch (id.ToLower())
{
case "phdr":
phdr = new PresetHeaderChunk(id, size, input);
break;
case "pbag":
pbag = new ZoneChunk(id, size, input);
break;
case "pmod":
presetModulators = new ModulatorChunk(id, size, input).Modulators;
break;
case "pgen":
presetGenerators = new GeneratorChunk(id, size, input).Generators;
break;
case "inst":
inst = new InstrumentChunk(id, size, input);
break;
case "ibag":
ibag = new ZoneChunk(id, size, input);
break;
case "imod":
instrumentModulators = new ModulatorChunk(id, size, input).Modulators;
break;
case "igen":
instrumentGenerators = new GeneratorChunk(id, size, input).Generators;
break;
case "shdr":
SampleHeaders = new SampleHeaderChunk(id, size, input).SampleHeaders;
break;
default:
throw new Exception("Invalid soundfont. Unrecognized sub chunk: " + id);
}
}
var pZones = pbag.ToZones(presetModulators, presetGenerators);
PresetHeaders = phdr.ToPresets(pZones);
var iZones = ibag.ToZones(instrumentModulators, instrumentGenerators);
Instruments = inst.ToInstruments(iZones);
}
public SoundFontInfo(IReadable input)
{
Tools = "";
Comments = "";
Copyright = "";
TargetProduct = "";
Author = "";
DataRom = "";
CreationDate = "";
BankName = "";
SoundEngine = "";
var id = input.Read8BitChars(4);
var size = input.ReadInt32LE();
if (id.ToLower() != "list")
{
throw new Exception("Invalid soundfont. Could not find INFO LIST chunk.");
}
var readTo = input.Position + size;
id = input.Read8BitChars(4);
if (id.ToLower() != "info")
{
throw new Exception("Invalid soundfont. The LIST chunk is not of type INFO.");
}
while (input.Position < readTo)
{
id = input.Read8BitChars(4);
size = input.ReadInt32LE();
switch (id.ToLower())
{
case "ifil":
SfVersionMajor = input.ReadInt16LE();
SfVersionMinor = input.ReadInt16LE();
break;
case "isng":
SoundEngine = input.Read8BitStringLength(size);
break;
case "inam":
BankName = input.Read8BitStringLength(size);
break;
case "irom":
DataRom = input.Read8BitStringLength(size);
break;
case "iver":
RomVersionMajor = input.ReadInt16LE();
RomVersionMinor = input.ReadInt16LE();
break;
case "icrd":
CreationDate = input.Read8BitStringLength(size);
break;
case "ieng":
Author = input.Read8BitStringLength(size);
break;
case "iprd":
TargetProduct = input.Read8BitStringLength(size);
break;
case "icop":
Copyright = input.Read8BitStringLength(size);
break;
case "icmt":
Comments = input.Read8BitStringLength(size);
break;
case "isft":
Tools = input.Read8BitStringLength(size);
break;
default:
throw new Exception("Invalid soundfont. The Chunk: " + id + " was not expected.");
}
}
}
public SoundFontPresets(IReadable input)
{
var id = input.Read8BitChars(4);
var size = input.ReadInt32LE();
if (id.ToLower() != "list")
throw new Exception("Invalid soundfont. Could not find pdta LIST chunk.");
var readTo = input.Position + size;
id = input.Read8BitChars(4);
if (id.ToLower() != "pdta")
throw new Exception("Invalid soundfont. The LIST chunk is not of type pdta.");
Modulator[] presetModulators = null;
Generator[] presetGenerators = null;
Modulator[] instrumentModulators = null;
Generator[] instrumentGenerators = null;
ZoneChunk pbag = null;
ZoneChunk ibag = null;
PresetHeaderChunk phdr = null;
InstrumentChunk inst = null;
while (input.Position < readTo)
{
id = input.Read8BitChars(4);
size = input.ReadInt32LE();
switch (id.ToLower())
{
case "phdr":
phdr = new PresetHeaderChunk(id, size, input);
break;
case "pbag":
pbag = new ZoneChunk(id, size, input);
break;
case "pmod":
presetModulators = new ModulatorChunk(id, size, input).Modulators;
break;
case "pgen":
presetGenerators = new GeneratorChunk(id, size, input).Generators;
break;
case "inst":
inst = new InstrumentChunk(id, size, input);
break;
case "ibag":
ibag = new ZoneChunk(id, size, input);
break;
case "imod":
instrumentModulators = new ModulatorChunk(id, size, input).Modulators;
break;
case "igen":
instrumentGenerators = new GeneratorChunk(id, size, input).Generators;
break;
case "shdr":
SampleHeaders = new SampleHeaderChunk(id, size, input).SampleHeaders;
break;
default:
throw new Exception("Invalid soundfont. Unrecognized sub chunk: " + id);
}
}
var pZones = pbag.ToZones(presetModulators, presetGenerators);
PresetHeaders = phdr.ToPresets(pZones);
var iZones = ibag.ToZones(instrumentModulators, instrumentGenerators);
Instruments = inst.ToInstruments(iZones);
}
public SoundFontInfo(IReadable input)
{
Tools = "";
Comments = "";
Copyright = "";
TargetProduct = "";
Author = "";
DataRom = "";
CreationDate = "";
BankName = "";
SoundEngine = "";
var id = input.Read8BitChars(4);
var size = input.ReadInt32LE();
if (id.ToLower() != "list")
throw new Exception("Invalid soundfont. Could not find INFO LIST chunk.");
var readTo = input.Position + size;
id = input.Read8BitChars(4);
if (id.ToLower() != "info")
throw new Exception("Invalid soundfont. The LIST chunk is not of type INFO.");
while (input.Position < readTo)
{
id = input.Read8BitChars(4);
size = input.ReadInt32LE();
switch (id.ToLower())
{
case "ifil":
SfVersionMajor = input.ReadInt16LE();
SfVersionMinor = input.ReadInt16LE();
break;
case "isng":
SoundEngine = input.Read8BitStringLength(size);
break;
case "inam":
BankName = input.Read8BitStringLength(size);
break;
case "irom":
DataRom = input.Read8BitStringLength(size);
break;
case "iver":
RomVersionMajor = input.ReadInt16LE();
RomVersionMinor = input.ReadInt16LE();
break;
case "icrd":
CreationDate = input.Read8BitStringLength(size);
break;
case "ieng":
Author = input.Read8BitStringLength(size);
break;
case "iprd":
TargetProduct = input.Read8BitStringLength(size);
break;
case "icop":
Copyright = input.Read8BitStringLength(size);
break;
case "icmt":
Comments = input.Read8BitStringLength(size);
break;
case "isft":
Tools = input.Read8BitStringLength(size);
break;
default:
throw new Exception("Invalid soundfont. The Chunk: " + id + " was not expected.");
}
}
}
/// <summary>
/// Reads an integer as size, and then the string itself
/// </summary>
/// <returns></returns>
public static string GpReadStringInt(this IReadable data)
{
return(data.GpReadString(data.ReadInt32LE()));
}
/// <summary>
/// Reads an integer as size, and then the string itself
/// </summary>
/// <returns></returns>
public static string GpReadStringInt(this IReadable data, string encoding)
{
return(data.GpReadString(data.ReadInt32LE(), encoding));
}
