public static Stream CreateStream(Stream waveData, WaveFormat format)
{
MemoryStream stream = new MemoryStream();
BinaryWriter writer = new BinaryWriter(stream);
writer.Write(System.Text.Encoding.ASCII.GetBytes("RIFF".ToCharArray()));
writer.Write((Int32)(waveData.Length + 36));
writer.Write(System.Text.Encoding.ASCII.GetBytes("WAVEfmt ".ToCharArray()));
writer.Write((Int32)16);
writer.Write((Int16)format.wFormatTag);
writer.Write((Int16)format.nChannels);
writer.Write((Int32)format.nSamplesPerSec);
writer.Write((Int32)format.nAvgBytesPerSec);
writer.Write((Int16)format.nBlockAlign);
writer.Write((Int16)format.wBitsPerSample);
writer.Write(System.Text.Encoding.ASCII.GetBytes("data".ToCharArray()));
writer.Write((Int32)waveData.Length);
waveData.Seek(0, SeekOrigin.Begin);
byte[] b = new byte[waveData.Length];
waveData.Read(b, 0, (int)waveData.Length);
writer.Write(b);
writer.Seek(0, SeekOrigin.Begin);
return stream;
}
public WaveInRecorder(int device, WaveFormat format, int bufferSize, int bufferCount, BufferDoneEventHandler doneProc)
{
m_DoneProc = doneProc;
WaveInHelper.Try(WaveNative.waveInOpen(out m_WaveIn, device, format, m_BufferProc, 0, WaveNative.CALLBACK_FUNCTION));
AllocateBuffers(bufferSize, bufferCount);
for (int i = 0; i < bufferCount; i++)
{
SelectNextBuffer();
m_CurrentBuffer.Record();
}
WaveInHelper.Try(WaveNative.waveInStart(m_WaveIn));
m_Thread = new Thread(new ThreadStart(ThreadProc));
m_Thread.Start();
}
/// <summary>ReadHeader() - Changed to CopyHeader(destination)</summary>
private void CopyHeader(Stream destinationStream)
{
BinaryReader reader = new BinaryReader(m_Stream);
BinaryWriter writer = new BinaryWriter(destinationStream);
if (CopyChunk(reader, writer) != "RIFF")
{
throw new Exception("Invalid file format");
}
writer.Write(reader.ReadInt32()); // File length minus first 8 bytes of RIFF description
if (CopyChunk(reader, writer) != "WAVE")
{
throw new Exception("Invalid file format");
}
if (CopyChunk(reader, writer) != "fmt ")
{
throw new Exception("Invalid file format");
}
int len = reader.ReadInt32();
if (len < 16)
{ // bad format chunk length
throw new Exception("Invalid file format");
}
else
{
writer.Write(len);
}
m_Format = new WaveFormat(22050, 16, 2); // initialize to any format
m_Format.wFormatTag = reader.ReadInt16();
m_Format.nChannels = reader.ReadInt16();
m_Format.nSamplesPerSec = reader.ReadInt32();
m_Format.nAvgBytesPerSec = reader.ReadInt32();
m_Format.nBlockAlign = reader.ReadInt16();
m_Format.wBitsPerSample = reader.ReadInt16();
//copy format information
writer.Write(m_Format.wFormatTag);
writer.Write(m_Format.nChannels);
writer.Write(m_Format.nSamplesPerSec);
writer.Write(m_Format.nAvgBytesPerSec);
writer.Write(m_Format.nBlockAlign);
writer.Write(m_Format.wBitsPerSample);
// advance in the stream to skip the wave format block
len -= 16; // minimum format size
writer.Write(reader.ReadBytes(len));
len = 0;
/*while (len > 0)
* {
* reader.ReadByte();
* len--;
* }*/
// assume the data chunk is aligned
while (m_Stream.Position < m_Stream.Length && CopyChunk(reader, writer) != "data")
{
;
}
if (m_Stream.Position >= m_Stream.Length)
{
throw new Exception("Invalid file format");
}
m_Length = reader.ReadInt32();
writer.Write(m_Length);
m_DataPos = m_Stream.Position;
Position = 0;
}
private void CopyHeader(Stream destinationStream)
{
BinaryReader reader = new BinaryReader(m_Stream);
BinaryWriter writer = new BinaryWriter(destinationStream);
if (CopyChunk(reader, writer) != "RIFF")
{
throw new Exception("Invalid file format");
}
writer.Write(reader.ReadInt32());
if (CopyChunk(reader, writer) != "WAVE")
{
throw new Exception("Invalid file format");
}
if (CopyChunk(reader, writer) != "fmt ")
{
throw new Exception("Invalid file format");
}
int len = reader.ReadInt32();
if (len < 16)
{
throw new Exception("Invalid file format");
}
else
{
writer.Write(len);
}
m_Format = new WaveFormat(22050, 16, 2);
m_Format.wFormatTag = reader.ReadInt16();
m_Format.nChannels = reader.ReadInt16();
m_Format.nSamplesPerSec = reader.ReadInt32();
m_Format.nAvgBytesPerSec = reader.ReadInt32();
m_Format.nBlockAlign = reader.ReadInt16();
m_Format.wBitsPerSample = reader.ReadInt16();
//copy format information
writer.Write(m_Format.wFormatTag);
writer.Write(m_Format.nChannels);
writer.Write(m_Format.nSamplesPerSec);
writer.Write(m_Format.nAvgBytesPerSec);
writer.Write(m_Format.nBlockAlign);
writer.Write(m_Format.wBitsPerSample);
len -= 16;
writer.Write(reader.ReadBytes(len));
len = 0;
while (m_Stream.Position < m_Stream.Length && CopyChunk(reader, writer) != "data")
{
;
}
if (m_Stream.Position >= m_Stream.Length)
{
throw new Exception("Invalid file format");
}
m_Length = reader.ReadInt32();
writer.Write(m_Length);
m_DataPos = m_Stream.Position;
Position = 0;
}
private void ReadHeader()
{
BinaryReader Reader = new BinaryReader(m_Stream);
if (ReadChunk(Reader) != "RIFF")
throw new Exception("Invalid file format");
Reader.ReadInt32();
if (ReadChunk(Reader) != "WAVE")
throw new Exception("Invalid file format");
if (ReadChunk(Reader) != "fmt ")
throw new Exception("Invalid file format");
int len = Reader.ReadInt32();
if (len < 16)
throw new Exception("Invalid file format");
m_Format = new WaveFormat(22050, 16, 2);
m_Format.wFormatTag = Reader.ReadInt16();
m_Format.nChannels = Reader.ReadInt16();
m_Format.nSamplesPerSec = Reader.ReadInt32();
m_Format.nAvgBytesPerSec = Reader.ReadInt32();
m_Format.nBlockAlign = Reader.ReadInt16();
m_Format.wBitsPerSample = Reader.ReadInt16();
len -= 16;
while (len > 0) {
Reader.ReadByte();
len--;
}
while(m_Stream.Position < m_Stream.Length && ReadChunk(Reader) != "data")
;
if (m_Stream.Position >= m_Stream.Length)
throw new Exception("Invalid file format");
m_Length = Reader.ReadInt32();
m_DataPos = m_Stream.Position;
Position = 0;
}
private void CopyHeader(Stream destinationStream)
{
BinaryReader reader = new BinaryReader(m_Stream);
BinaryWriter writer = new BinaryWriter(destinationStream);
if (CopyChunk(reader, writer) != "RIFF")
throw new Exception("Invalid file format");
writer.Write( reader.ReadInt32() );
if (CopyChunk(reader, writer) != "WAVE")
throw new Exception("Invalid file format");
if (CopyChunk(reader, writer) != "fmt ")
throw new Exception("Invalid file format");
int len = reader.ReadInt32();
if (len < 16){
throw new Exception("Invalid file format");
}else{
writer.Write(len);
}
m_Format = new WaveFormat(22050, 16, 2);
m_Format.wFormatTag = reader.ReadInt16();
m_Format.nChannels = reader.ReadInt16();
m_Format.nSamplesPerSec = reader.ReadInt32();
m_Format.nAvgBytesPerSec = reader.ReadInt32();
m_Format.nBlockAlign = reader.ReadInt16();
m_Format.wBitsPerSample = reader.ReadInt16();
//copy format information
writer.Write( m_Format.wFormatTag );
writer.Write( m_Format.nChannels );
writer.Write( m_Format.nSamplesPerSec );
writer.Write( m_Format.nAvgBytesPerSec );
writer.Write( m_Format.nBlockAlign );
writer.Write( m_Format.wBitsPerSample );
len -= 16;
writer.Write( reader.ReadBytes(len) );
len = 0;
while(m_Stream.Position < m_Stream.Length && CopyChunk(reader, writer) != "data")
;
if (m_Stream.Position >= m_Stream.Length)
throw new Exception("Invalid file format");
m_Length = reader.ReadInt32();
writer.Write( m_Length );
m_DataPos = m_Stream.Position;
Position = 0;
}
public static extern int waveInOpen(out IntPtr phwi, int uDeviceID, WaveFormat lpFormat, WaveDelegate dwCallback, int dwInstance, int dwFlags);
