public int Read(byte[] buffer, int offset, int count)
{
int read = source.Read(buffer, offset, count);
if (Settings.GlobalSettingsStore.Instance.ProfileSettingsStore.GetClientSettingBool(ProfileSettingsKeys.NATOTone))
{
var effectBytes = GetEffect(read / 2);
//mix together
for (int i = 0; i < read / 2; i++)
{
short audio = ConversionHelpers.ToShort(buffer[(offset + i) * 2], buffer[((i + offset) * 2) + 1]);
audio = (short)(audio + _audioEffectShort[i]);
//buffer[i + offset] = effectBytes[i]+buffer[i + offset];
byte byte1;
byte byte2;
ConversionHelpers.FromShort(audio, out byte1, out byte2);
buffer[(offset + i) * 2] = byte1;
buffer[((i + offset) * 2) + 1] = byte2;
}
}
return(read);
}
public static byte[] CreateStereoMix(byte[] pcmAudio)
{
var stereoMix = new byte[pcmAudio.Length * 2];
for (var i = 0; i < pcmAudio.Length / 2; i++)
{
short audio = ConversionHelpers.ToShort(pcmAudio[i * 2], pcmAudio[i * 2 + 1]);
//half audio to keep loudness the same
if (audio != 0)
{
audio = (short)(audio / 2);
}
byte byte1;
byte byte2;
ConversionHelpers.FromShort(audio, out byte1, out byte2);
stereoMix[i * 4] = byte1;
stereoMix[i * 4 + 1] = byte2;
stereoMix[i * 4 + 2] = byte1;
stereoMix[i * 4 + 3] = byte2;
}
return(stereoMix);
}
public void ConversionShortToBytes()
{
short[] shorts = new short[] { 1, short.MaxValue, short.MinValue, 0 };
foreach (var shortTest in shorts)
{
byte byte1;
byte byte2;
ConversionHelpers.FromShort(shortTest, out byte1, out byte2);
byte[] converted = BitConverter.GetBytes(shortTest);
Assert.AreEqual(byte1, converted[0]);
Assert.AreEqual(byte2, converted[1]);
//convert back
Assert.AreEqual(shortTest, ConversionHelpers.ToShort(byte1, byte2));
}
}
public static byte[] CreateBalancedMix(byte[] pcmAudio, float balance)
{
float left = 1.0f;
float right = 1.0f;
//right
if (balance > 0)
{
var leftBias = 1 - Math.Abs(balance);
var rightBias = Math.Abs(balance);
//right
left = left * leftBias;
right = right * rightBias;
}
else if (balance < 0)
{
var leftBias = Math.Abs(balance);
var rightBias = 1 - Math.Abs(balance);
//left
left = left * leftBias;
right = right * rightBias;
}
else
{
//equal balance
left = 0.5f;
right = 0.5f;
}
if (left > 1f)
{
left = 1f;
}
if (right > 1f)
{
right = 1f;
}
var stereoMix = new byte[pcmAudio.Length * 2];
for (var i = 0; i < pcmAudio.Length / 2; i++)
{
float audio = ConversionHelpers.ToShort(pcmAudio[i * 2], pcmAudio[i * 2 + 1]);
short leftAudio = 0;
short rightAudio = 0;
//half audio to keep loudness the same
if (audio != 0)
{
leftAudio = Convert.ToInt16(audio * left);
rightAudio = Convert.ToInt16(audio * right);
}
byte byte1;
byte byte2;
ConversionHelpers.FromShort(leftAudio, out byte1, out byte2);
byte byte3;
byte byte4;
ConversionHelpers.FromShort(rightAudio, out byte3, out byte4);
stereoMix[i * 4] = byte1;
stereoMix[i * 4 + 1] = byte2;
stereoMix[i * 4 + 2] = byte3;
stereoMix[i * 4 + 3] = byte4;
}
return(stereoMix);
}
