public void Dispose()
{
if (RiffSource != null)
{
RiffSource.Dispose();
}
RiffSource = null;
}
void RunImportJob(IEnumerable <string> files)
{
foreach (var f in files)
{
RiffMaster rm = new RiffMaster();
rm.LoadFile(f);
var dataChunk = rm.riff.GetSubchunk("data", null) as RiffMaster.RiffSubchunk;
var fmt = rm.riff.GetSubchunk("fmt ", null) as RiffMaster.RiffSubchunk_fmt;
BinaryReader br = new BinaryReader(new MemoryStream(dataChunk.data));
int nSamples = dataChunk.data.Length / fmt.blockAlign;
int nChunks = nSamples / 32;
if (fmt.channels == 2)
{
throw new InvalidOperationException("expected mono file");
}
string textoutfile = f + ".txt";
StreamWriter sw = new StreamWriter(textoutfile);
br = new BinaryReader(new MemoryStream(dataChunk.data));
var ms = new MemoryStream();
for (int j = 0; j < nChunks; j++)
{
string outfile = f + "." + j + ".dmw";
FileStream fs = new FileStream(outfile, FileMode.Create, FileAccess.Write, FileShare.None);
fs.WriteByte(0x20); fs.WriteByte(0x00); fs.WriteByte(0x00); fs.WriteByte(0x00);
fs.WriteByte(0x1F);
for (int i = 0; i < 32; i++)
{
short ssample = br.ReadInt16();
int sample = ssample + 16;
if (sample > 31)
{
sample = 31; //clamp in case we overdrived or whatever
}
if (sample < 0)
{
throw new InvalidOperationException("oops minus 0");
}
fs.WriteByte((byte)sample);
sw.Write("{0}{1}", (byte)sample, i == 31?"":" ");
}
sw.WriteLine();
fs.Close();
}
sw.Close();
rm.WriteFile(f);
}
}
public void Load(Stream stream)
{
try
{
RiffSource = null;
var rm = new RiffMaster();
rm.LoadStream(stream);
RiffSource = rm;
//analyze the file to make sure its an OK wave file
if (rm.riff.type != "WAVE")
{
throw new Blob_WaveFile_Exception("Not a RIFF WAVE file");
}
var fmt = rm.riff.subchunks.FirstOrDefault(chunk => chunk.tag == "fmt ") as RiffMaster.RiffSubchunk_fmt;
if (fmt == null)
{
throw new Blob_WaveFile_Exception("Not a valid RIFF WAVE file (missing fmt chunk");
}
if (1 != rm.riff.subchunks.Count(chunk => chunk.tag == "data"))
{
//later, we could make a Stream which would make an index of data chunks and walk around them
throw new Blob_WaveFile_Exception("Multi-data-chunk WAVE files not supported");
}
if (fmt.format_tag != RiffMaster.RiffSubchunk_fmt.FORMAT_TAG.WAVE_FORMAT_PCM)
{
throw new Blob_WaveFile_Exception("Not a valid PCM WAVE file (only PCM is supported)");
}
if (fmt.channels != 2 || fmt.bitsPerSample != 16 || fmt.samplesPerSec != 44100)
{
throw new Blob_WaveFile_Exception("Not a CDA format WAVE file (conversion not yet supported)");
}
//acquire the start of the data chunk
var dataChunk = rm.riff.subchunks.FirstOrDefault(chunk => chunk.tag == "data") as RiffMaster.RiffSubchunk;
waveDataStreamPos = dataChunk.Position;
mDataLength = dataChunk.Length;
}
catch (Exception)
{
Dispose();
throw;
}
}
