Пример #1
0
 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.");
     }
 }
Пример #2
0
 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.");
     }
 }