public static bool Load(RiffChunk parent, RiffChunk chunk, IReadable stream)
{
if (parent != null && RiffChunk.HeaderSize > parent.Size)
{
return(false);
}
if (stream.Position + HeaderSize >= stream.Length)
{
return(false);
}
chunk.Id = stream.Read8BitStringLength(4);
if (chunk.Id[0] <= ' ' || chunk.Id[0] >= 'z')
{
return(false);
}
chunk.Size = stream.ReadUInt32LE();
if (parent != null && HeaderSize + chunk.Size > parent.Size)
{
return(false);
}
if (parent != null)
{
parent.Size -= HeaderSize + chunk.Size;
}
var isRiff = chunk.Id == "RIFF";
var isList = chunk.Id == "LIST";
if (isRiff && parent != null)
{
// not allowed
return(false);
}
if (!isRiff && !isList)
{
// custom type without sub type
return(true);
}
// for lists unwrap the list type
chunk.Id = stream.Read8BitStringLength(4);
if (chunk.Id[0] <= ' ' || chunk.Id[0] >= 'z')
{
return(false);
}
chunk.Size -= 4;
return(true);
}
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 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 static HydraInst Load(IReadable reader)
{
var inst = new HydraInst();
inst.InstName = reader.Read8BitStringLength(20);
inst.InstBagNdx = reader.ReadUInt16LE();
return(inst);
}
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();
}
public static HydraPhdr Load(IReadable reader)
{
HydraPhdr phdr = new HydraPhdr();
phdr.PresetName = reader.Read8BitStringLength(20);
phdr.Preset = reader.ReadUInt16LE();
phdr.Bank = reader.ReadUInt16LE();
phdr.PresetBagNdx = reader.ReadUInt16LE();
phdr.Library = reader.ReadUInt32LE();
phdr.Genre = reader.ReadUInt32LE();
phdr.Morphology = reader.ReadUInt32LE();
return(phdr);
}
public static HydraShdr Load(IReadable reader)
{
var shdr = new HydraShdr();
shdr.SampleName = reader.Read8BitStringLength(20);
shdr.Start = reader.ReadUInt32LE();
shdr.End = reader.ReadUInt32LE();
shdr.StartLoop = reader.ReadUInt32LE();
shdr.EndLoop = reader.ReadUInt32LE();
shdr.SampleRate = reader.ReadUInt32LE();
shdr.OriginalPitch = (byte)reader.ReadByte();
shdr.PitchCorrection = reader.ReadSignedByte();
shdr.SampleLink = reader.ReadUInt16LE();
shdr.SampleType = reader.ReadUInt16LE();
return(shdr);
}
public InstrumentChunk(string id, int size, IReadable input)
: base(id, size)
{
if (size % 22 != 0)
throw new Exception("Invalid SoundFont. The preset chunk was invalid.");
_rawInstruments = new RawInstrument[((int)(size / 22.0))];
RawInstrument lastInstrument = null;
for (int x = 0; x < _rawInstruments.Length; x++)
{
var i = new RawInstrument();
i.Name = input.Read8BitStringLength(20);
i.StartInstrumentZoneIndex = input.ReadUInt16LE();
if (lastInstrument != null)
{
lastInstrument.EndInstrumentZoneIndex = TypeUtils.ToUInt16((i.StartInstrumentZoneIndex - 1));
}
_rawInstruments[x] = i;
lastInstrument = i;
}
}
public InstrumentChunk(string id, int size, IReadable input)
: base(id, size)
{
if (size % 22 != 0)
{
throw new Exception("Invalid SoundFont. The preset chunk was invalid.");
}
_rawInstruments = new RawInstrument[((int)(size / 22.0))];
RawInstrument lastInstrument = null;
for (int x = 0; x < _rawInstruments.Length; x++)
{
var i = new RawInstrument();
i.Name = input.Read8BitStringLength(20);
i.StartInstrumentZoneIndex = input.ReadUInt16LE();
if (lastInstrument != null)
{
lastInstrument.EndInstrumentZoneIndex = Platform.Platform.ToUInt16((i.StartInstrumentZoneIndex - 1));
}
_rawInstruments[x] = i;
lastInstrument = i;
}
}
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 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.");
}
}
}
