public static void ConvertToPcm(WavFile wavFile)
{
if (wavFile == null)
{
throw new ArgumentNullException(nameof(wavFile), "wavFile has to be loaded.");
}
if (wavFile.FormatTag == 2)
{
var numArray = ImaAdpcmCodec.DecodeStream(wavFile.AudioData, wavFile.Channels, wavFile.BlockAlign);
wavFile.AudioData = numArray;
wavFile.FormatTag = 1;
var wavFile1 = wavFile;
int num1 = wavFile1.Channels;
wavFile1.Channels = (ushort)num1;
var wavFile2 = wavFile;
var num2 = (int)wavFile2.SamplesPerSec;
wavFile2.SamplesPerSec = (uint)num2;
var wavFile3 = wavFile;
var num3 = wavFile3.Channels * (int)wavFile.SamplesPerSec * 2;
wavFile3.AvgBytesPerSec = (uint)num3;
wavFile.BlockAlign = Convert.ToUInt16(wavFile.Channels * 2);
wavFile.BitsPerSample = 16;
wavFile.FormatExtension = null;
}
else
{
if (Enum.IsDefined(typeof(WavFile.WaveFormatCategories), wavFile.FormatTag))
{
throw new InvalidOperationException($"Conversion from {Enum.ToObject(typeof (WavFile.WaveFormatCategories), wavFile.FormatTag)} to {WavFile.WaveFormatCategories.Pcm} is not supported.");
}
throw new InvalidOperationException($"Conversion from 0x{wavFile.FormatTag} to {WavFile.WaveFormatCategories.Pcm.ToString()} is not supported.");
}
}
public static void ConvertToAdpcm(WavFile wavFile)
{
if (wavFile == null)
{
throw new ArgumentNullException(nameof(wavFile), "wavFile has to be loaded.");
}
if (wavFile.FormatTag == 1)
{
const int blockAlignment = 36;
const int num1 = 64;
var numArray1 = ImaAdpcmCodec.EncodeStream(wavFile.AudioData, wavFile.Channels, blockAlignment);
wavFile.AudioData = numArray1;
wavFile.FormatTag = 2;
var wavFile1 = wavFile;
int num2 = wavFile1.Channels;
wavFile1.Channels = (ushort)num2;
var wavFile2 = wavFile;
var num3 = (int)wavFile2.SamplesPerSec;
wavFile2.SamplesPerSec = (uint)num3;
wavFile.AvgBytesPerSec =
Convert.ToUInt32(wavFile.Channels * wavFile.SamplesPerSec / (float)num1 * blockAlignment);
wavFile.BlockAlign = Convert.ToUInt16(blockAlignment);
wavFile.BitsPerSample = 4;
if (wavFile.Channels == 1)
{
var wavFile3 = wavFile;
var numArray2 = new byte[6];
const int index = 2;
const int num4 = 4;
numArray2[index] = (byte)num4;
wavFile3.FormatExtension = numArray2;
}
else
{
var wavFile3 = wavFile;
var numArray2 = new byte[6];
const int index = 2;
const int num4 = 3;
numArray2[index] = (byte)num4;
wavFile3.FormatExtension = numArray2;
}
}
else
{
if (Enum.IsDefined(typeof(WavFile.WaveFormatCategories), wavFile.FormatTag))
{
throw new InvalidOperationException($"Conversion from {Enum.ToObject(typeof (WavFile.WaveFormatCategories), wavFile.FormatTag)} to {WavFile.WaveFormatCategories.MsAdpcm} is not supported.");
}
throw new InvalidOperationException($"Conversion from 0x{wavFile.FormatTag} to {WavFile.WaveFormatCategories.MsAdpcm} is not supported.");
}
}
