public static WavHeader OpenWavFile(string File, out double[] left, out double[] right)
{
WavHeader Header = new WavHeader();
using (FileStream fs = new FileStream(File, FileMode.Open, FileAccess.Read))
using (BinaryReader br = new BinaryReader(fs))
{
Header.riffID = br.ReadBytes(4);
Header.size = br.ReadUInt32();
Header.wavID = br.ReadBytes(4);
br.ReadBytes(36); // junk
Header.fmtID = br.ReadBytes(4);
Header.fmtSize = br.ReadUInt32();
Header.format = br.ReadUInt16();
Header.channels = br.ReadUInt16();
Header.sampleRate = br.ReadUInt32();
Header.bytePerSec = br.ReadUInt32();
Header.blockSize = br.ReadUInt16();
Header.bit = br.ReadUInt16();
br.ReadBytes(2); // junk
Header.dataID = br.ReadBytes(4);
Header.dataSize = br.ReadUInt32();
left = new double[Header.dataSize / Header.blockSize];
right = new double[left.Length];
short toDouble;
for (int i = 0; i < Header.dataSize / Header.blockSize; i++)
{
toDouble = br.ReadInt16();
left[i] = toDouble / 32768.0;
toDouble = br.ReadInt16();
right[i] = toDouble / 32768.0;
}
}
return(Header);
}
public static void SaveWavFile(string File, double[] dpcmLeft, double[] dpcmRight, ushort BitDepth, WavHeader Header)
{
using (FileStream fs = new FileStream(File, FileMode.Create, FileAccess.Write))
using (BinaryWriter br = new BinaryWriter(fs))
{
br.Write(Header.riffID); //Header.riffID = br.ReadBytes(4);
br.Write((uint)(36 + dpcmLeft.Length * 2 * BitDepth / 8)); //Header.size = br.ReadUInt32();
br.Write(Header.wavID); //Header.wavID = br.ReadBytes(4);
br.Write(Header.fmtID); // Header.fmtID = br.ReadBytes(4);
br.Write(16); // Header.fmtSize = br.ReadUInt32();
br.Write(Header.format); // Header.format = br.ReadUInt16();
br.Write((ushort)2); // Header.channels = br.ReadUInt16();
br.Write(Header.sampleRate); // Header.sampleRate = br.ReadUInt32();
br.Write(Header.sampleRate * 2 * BitDepth / 8); //Header.bytePerSec = br.ReadUInt32();
br.Write((ushort)(2 * BitDepth / 8)); //Header.blockSize = br.ReadUInt16();
br.Write(BitDepth); // Header.bit = br.ReadUInt16();
br.Write(Header.dataID); //Header.dataID = br.ReadBytes(4);
br.Write(dpcmLeft.Length * 2 * BitDepth / 8); // Header.dataSize = br.ReadUInt32();
//left = new double[Header.dataSize / Header.blockSize];
//right = new double[left.Length];
for (int i = 0; i < dpcmLeft.Length; i++)
{
if (BitDepth == 8)
{
br.Write((byte)(dpcmLeft[i] * 128 + 128));//toDouble = br.ReadInt16();
br.Write((byte)(dpcmRight[i] * 128 + 128));
}
else
{
br.Write((ushort)(dpcmLeft[i] * 32768));
br.Write((ushort)(dpcmRight[i] * 32768));
}
//left[i] = toDouble / 32768.0;
//toDouble = br.ReadInt16();
//right[i] = toDouble / 32768.0;
}
}
}