private void ReadHeader()
{
BinaryReader binaryReader = new BinaryReader(this._stream);
if (WaveFile.ReadChunk(binaryReader) != "RIFF")
{
throw new Exception("Invalid file format");
}
binaryReader.ReadInt32();
if (WaveFile.ReadChunk(binaryReader) != "WAVE")
{
throw new Exception("Invalid file format");
}
if (WaveFile.ReadChunk(binaryReader) != "fmt ")
{
throw new Exception("Invalid file format");
}
int num = binaryReader.ReadInt32();
if (num < 16)
{
throw new Exception("Invalid file format");
}
this._formatTag = binaryReader.ReadInt16();
this._isPCM = (this._formatTag == 1);
if (binaryReader.ReadInt16() != 2)
{
throw new Exception("Invalid file format");
}
this._sampleRate = binaryReader.ReadInt32();
this._avgBytesPerSec = binaryReader.ReadInt32();
this._blockAlign = binaryReader.ReadInt16();
this._bitsPerSample = binaryReader.ReadInt16();
for (num -= 16; num > 0; num--)
{
binaryReader.ReadByte();
}
while (this._stream.Position < this._stream.Length && WaveFile.ReadChunk(binaryReader) != "data")
{
num = binaryReader.ReadInt32();
while (this._stream.Position < this._stream.Length && num > 0)
{
binaryReader.ReadByte();
num--;
}
}
if (this._stream.Position >= this._stream.Length)
{
throw new Exception("Invalid file format");
}
this._length = binaryReader.ReadInt32();
this._dataPos = this._stream.Position;
}
private void ReadHeader()
{
BinaryReader binaryReader = new BinaryReader(this._stream);
if (WaveFile.ReadChunk(binaryReader) != "RIFF")
{
throw new Exception("Invalid file format");
}
int num = binaryReader.ReadInt32();
if (WaveFile.ReadChunk(binaryReader) != "WAVE")
{
throw new Exception("Invalid file format");
}
if (WaveFile.ReadChunk(binaryReader) != "fmt ")
{
throw new Exception("Invalid file format");
}
num = binaryReader.ReadInt32();
if (num < 16)
{
throw new Exception("Invalid file format");
}
this._formatTag = binaryReader.ReadInt16();
this._isPCM = (this._formatTag == 1);
short num2 = binaryReader.ReadInt16();
if (num2 != 2)
{
throw new Exception("Invalid file format");
}
this._sampleRate = binaryReader.ReadInt32();
this._avgBytesPerSec = binaryReader.ReadInt32();
this._blockAlign = binaryReader.ReadInt16();
this._bitsPerSample = binaryReader.ReadInt16();
for (num -= 16; num > 0; num--)
{
binaryReader.ReadByte();
}
string text = "";
while (this._stream.Position < this._stream.Length)
{
text = WaveFile.ReadChunk(binaryReader);
if (text == "data")
{
break;
}
num = binaryReader.ReadInt32();
while (this._stream.Position < this._stream.Length && num > 0)
{
binaryReader.ReadByte();
num--;
}
}
if (this._stream.Position >= this._stream.Length)
{
throw new Exception("Invalid file format");
}
this._size = binaryReader.ReadInt32();
this._dataPos = this._stream.Position;
int num3 = num2 * this._sampleRate * this._bitsPerSample / 8;
this._duration = this._size / num3;
}
