/// <summary>
/// Loads a SoundFont from a stream
/// </summary>
/// <param name="sfFile">stream</param>
public SoundFont(Stream sfFile)
{
using (sfFile) // a bit ugly, done to get Win store to compile
{
RiffChunk riff = RiffChunk.GetTopLevelChunk(new BinaryReader(sfFile));
if (riff.ChunkID == "RIFF")
{
string formHeader = riff.ReadChunkID();
if (formHeader != "sfbk")
{
throw new InvalidDataException(String.Format("Not a SoundFont ({0})", formHeader));
}
RiffChunk list = riff.GetNextSubChunk();
if (list.ChunkID == "LIST")
{
//RiffChunk r = list.GetNextSubChunk();
info = new InfoChunk(list);
RiffChunk r = riff.GetNextSubChunk();
sampleData = new SampleDataChunk(r);
r = riff.GetNextSubChunk();
presetsChunk = new PresetsChunk(r);
}
else
{
throw new InvalidDataException(String.Format("Not info list found ({0})", list.ChunkID));
}
}
else
{
throw new InvalidDataException("Not a RIFF file");
}
}
}
public SampleDataChunk(RiffChunk chunk)
{
string header = chunk.ReadChunkID();
if(header != "sdta")
{
throw new InvalidDataException(String.Format("Not a sample data chunk ({0})",header));
}
sampleData = chunk.GetData();
}
internal InfoChunk(RiffChunk chunk)
{
bool ifilPresent = false;
bool isngPresent = false;
bool INAMPresent = false;
if(chunk.ReadChunkID() != "INFO")
{
throw new InvalidDataException("Not an INFO chunk");
}
//this.chunk = chunk;
RiffChunk c;
while((c = chunk.GetNextSubChunk()) != null)
{
switch(c.ChunkID)
{
case "ifil":
ifilPresent = true;
verSoundFont = (SFVersion) c.GetDataAsStructure(new SFVersionBuilder());
break;
case "isng":
isngPresent = true;
waveTableSoundEngine = c.GetDataAsString();
break;
case "INAM":
INAMPresent = true;
bankName = c.GetDataAsString();
break;
case "irom":
dataROM = c.GetDataAsString();
break;
case "iver":
verROM = (SFVersion) c.GetDataAsStructure(new SFVersionBuilder());
break;
case "ICRD":
creationDate = c.GetDataAsString();
break;
case "IENG":
author = c.GetDataAsString();
break;
case "IPRD":
targetProduct = c.GetDataAsString();
break;
case "ICOP":
copyright = c.GetDataAsString();
break;
case "ICMT":
comments = c.GetDataAsString();
break;
case "ISFT":
tools = c.GetDataAsString();
break;
default:
throw new InvalidDataException(String.Format("Unknown chunk type {0}",c.ChunkID));
}
}
if(!ifilPresent)
{
throw new InvalidDataException("Missing SoundFont version information");
}
if(!isngPresent)
{
throw new InvalidDataException("Missing wavetable sound engine information");
}
if(!INAMPresent)
{
throw new InvalidDataException("Missing SoundFont name information");
}
}
internal PresetsChunk(RiffChunk chunk)
{
string header = chunk.ReadChunkID();
if (header != "pdta")
{
throw new InvalidDataException(String.Format("Not a presets data chunk ({0})", header));
}
RiffChunk c;
while ((c = chunk.GetNextSubChunk()) != null)
{
switch (c.ChunkID)
{
case "PHDR":
case "phdr":
c.GetDataAsStructureArray(presetHeaders);
break;
case "PBAG":
case "pbag":
c.GetDataAsStructureArray(presetZones);
break;
case "PMOD":
case "pmod":
c.GetDataAsStructureArray(presetZoneModulators);
break;
case "PGEN":
case "pgen":
c.GetDataAsStructureArray(presetZoneGenerators);
break;
case "INST":
case "inst":
c.GetDataAsStructureArray(instruments);
break;
case "IBAG":
case "ibag":
c.GetDataAsStructureArray(instrumentZones);
break;
case "IMOD":
case "imod":
c.GetDataAsStructureArray(instrumentZoneModulators);
break;
case "IGEN":
case "igen":
c.GetDataAsStructureArray(instrumentZoneGenerators);
break;
case "SHDR":
case "shdr":
c.GetDataAsStructureArray(sampleHeaders);
break;
default:
throw new InvalidDataException(String.Format("Unknown chunk type {0}", c.ChunkID));
}
}
// now link things up
instrumentZoneGenerators.Load(sampleHeaders.SampleHeaders);
instrumentZones.Load(instrumentZoneModulators.Modulators, instrumentZoneGenerators.Generators);
instruments.LoadZones(instrumentZones.Zones);
presetZoneGenerators.Load(instruments.Instruments);
presetZones.Load(presetZoneModulators.Modulators, presetZoneGenerators.Generators);
presetHeaders.LoadZones(presetZones.Zones);
sampleHeaders.RemoveEOS();
}