private unsafe void GetDataChunk(byte[] _pWave, out int _ChunkSize, out int _index)
{
int num = _pWave.Length;
fixed(byte *ptr = &_pWave[0])
{
SRIFF *ptr2 = (SRIFF *)ptr;
ptr2 = (SRIFF *)(ptr + (int)ptr2->SubChunk1Size + 20);
while (ptr2->ChunkID != 1635017060 && ptr2 < ptr + num)
{
ptr2 = (SRIFF *)((byte *)ptr2 + (int)ptr2->ChunkSize + 8);
}
_ChunkSize = (int)ptr2->ChunkSize;
_index = (int)((long)ptr2 - (long)ptr) + 8;
}
}
private unsafe byte[] Resample()
{
if (AudioFormat == 1 && SampleRate == 22050 && NumChannels == 1 && BitsPerSample == 16)
{
return(RawWavFile);
}
fixed(byte *ptr4 = &RawWavFile[0])
{
int num = (int)BitsPerSample / 8;
float num2 = (float)(double)SampleRate / 22050f;
float num3 = 0f;
int num4 = num * NumChannels;
int num5 = DataSize / num4;
int num6 = (int)((float)num5 / num2);
int num7 = (int)(2.0 * (double)num6);
byte[] array = new byte[num7 + 44];
fixed(byte *ptr = &array[0])
{
short *ptr2 = (short *)ptr;
SRIFF *ptr3 = (SRIFF *)ptr2;
ptr2 += 22;
ptr3->ChunkID = 1179011410u;
ptr3->ChunkSize = (uint)(36 + num7);
ptr3->Format = 1163280727u;
ptr3->SubChunk1ID = 544501094u;
ptr3->SubChunk1Size = 16u;
ptr3->AudioFormat = 1;
ptr3->NumChannels = 1;
ptr3->SampleRate = 22050u;
ptr3->ByteRate = ptr3->SampleRate * 2;
ptr3->BitsPerSample = 16;
ptr3->BlockAlign = 2;
ptr3->SubChunk2ID = 1635017060u;
ptr3->SubChunk2Size = (uint)num7;
byte *ptr5 = ptr4 + DataIndex;
int num8 = 0;
int num9 = 0;
while (num6 > 0)
{
int num10 = 0;
int num11 = num8 * num4;
switch (BitsPerSample)
{
case 8:
num10 = ptr5[num11] - 128 << 8;
if (NumChannels == 2)
{
byte b = ptr5[num11 + 1];
}
break;
case 16:
num10 = ((ptr5[num11] & 0xFF) | ((ptr5[num11 + 1] & 0xFF) << 8));
if (NumChannels == 2)
{
byte b2 = ptr5[num11 + 2];
byte b3 = ptr5[num11 + 3];
}
break;
}
ptr2[num9] = (short)num10;
num9++;
num3 += num2;
int num12 = (int)num3;
num3 -= (float)num12;
num8 += num12;
num6--;
}
fileID++;
return(array);
}
}
}