/// <summary>
/// Reads the audio to the specified buffer.
/// </summary>
/// <param name="buffer">The buffer.</param>
/// <returns>
/// The length of the data written.
/// </returns>
public override int Read(Span <byte> buffer)
{
var cursor = MemoryMarshal.Cast <byte, Int24>(buffer);
while (cursor.Length > 0)
{
var reader = cursor.Length >= readBuffer.Length ? readBuffer : readBuffer.Slice(0, cursor.Length);
int u = Source.Read(reader.Span);
var wrote = reader.Span.Slice(0, u);
var dest = cursor.Slice(0, wrote.Length);
if (wrote.Length != dest.Length)
{
new InvalidOperationException(
$"The {nameof(wrote)}'s length and {nameof(dest)}'s length are not equal! This is a bug!").Throw();
}
if (AccuracyMode)
{
var dsmAcc = dsmAccumulator.Span;
var dsmLastOut = dsmLastOutput.Span;
dsmChannelPointer %= dsmAcc.Length;
for (int i = 0; i < dest.Length; i++)
{
var diff = wrote[i] - (dsmLastOut[dsmChannelPointer] / multiplier);
dsmAcc[dsmChannelPointer] += diff;
var v = dsmLastOut[dsmChannelPointer] = Convert(dsmAcc[dsmChannelPointer]);
dest[i] = IsEndiannessConversionRequired ? Int24.ReverseEndianness(v) : v;
dsmChannelPointer = ++dsmChannelPointer % dsmAcc.Length;
}
}
else
{
for (int i = 0; i < dest.Length; i++)
{
var v = Convert(wrote[i]);
dest[i] = IsEndiannessConversionRequired ? Int24.ReverseEndianness(v) : v;
}
}
cursor = cursor.Slice(dest.Length);
if (u != reader.Length)
{
return(buffer.Length - cursor.Length); //The Source doesn't fill whole reader so return here.
}
}
return(buffer.Length);
}
/// <summary>
/// Reads the audio to the specified buffer.
/// </summary>
/// <param name="buffer">The buffer.</param>
/// <returns>
/// The length of the data written.
/// </returns>
public override int Read(Span <float> buffer)
{
Span <Int24> span = stackalloc Int24[buffer.Length > ActualBufferMax ? ActualBufferMax : buffer.Length];
var cursor = buffer;
while (cursor.Length > 0)
{
var reader = cursor.Length >= span.Length ? span : span.Slice(0, cursor.Length);
int u = Source.Read(MemoryMarshal.AsBytes(span)) / bytesPerSample;
var wrote = reader.Slice(0, u);
var dest = cursor.Slice(0, wrote.Length);
if (wrote.Length != dest.Length)
{
new InvalidOperationException(
$"The {nameof(wrote)}'s length and {nameof(dest)}'s length are not equal! This is a bug!").Throw();
}
if (IsEndiannessConversionRequired)
{
for (int i = 0; i < wrote.Length && i < dest.Length; i++)
{
dest[i] = Int24.ReverseEndianness(wrote[i]) / divisor;
}
}
else
{
for (int i = 0; i < wrote.Length && i < dest.Length; i++)
{
dest[i] = wrote[i] / divisor;
}
}
cursor = cursor.Slice(u);
if (u != reader.Length)
{
return(buffer.Length - cursor.Length); //The Source doesn't fill whole reader so return here.
}
}
return(buffer.Length);
}
