Move GetByteSize to extension method

src/Beeper/Extensions/AudioFormatExtensions.cs

@@ -0,0 +1,18 @@
+namespace OldBit.Beeper.Extensions;
+
+public static class AudioFormatExtensions
+{
+    /// <summary>
+    /// Gets the byte size of a sample for the specified audio format.
+    /// </summary>
+    /// <param name="format">The audio format.</param>
+    /// <returns>The byte size of a sample for the specified audio format.</returns>
+    /// <exception cref="ArgumentOutOfRangeException">Thrown when an unsupported audio format is provided.</exception>
+    public static int GetByteSize(this AudioFormat format) => format switch
+    {
+        AudioFormat.Unsigned8Bit => 1,
+        AudioFormat.Signed16BitIntegerLittleEndian => 2,
+        AudioFormat.Float32BitLittleEndian => 4,
+        _ => throw new ArgumentOutOfRangeException(nameof(format))
+    };
+}

src/Beeper/Helpers/AudioFormatHelper.cs

@@ -2,20 +2,6 @@ namespace OldBit.Beeper.Helpers;
 
 public static class AudioFormatHelper
 {
-    /// <summary>
-    /// Gets the byte size of a sample for the specified audio format.
-    /// </summary>
-    /// <param name="format">The audio format.</param>
-    /// <returns>The byte size of a sample for the specified audio format.</returns>
-    /// <exception cref="ArgumentOutOfRangeException">Thrown when an unsupported audio format is provided.</exception>
-    public static int GetByteSize(AudioFormat format) => format switch
-    {
-        AudioFormat.Unsigned8Bit => 1,
-        AudioFormat.Signed16BitIntegerLittleEndian => 2,
-        AudioFormat.Float32BitLittleEndian => 4,
-        _ => throw new ArgumentOutOfRangeException(nameof(format))
-    };
-
     /// <summary>
     /// The size of a float in bytes.
     /// </summary>

src/Beeper/IO/PcmDataReader.cs

@@ -1,3 +1,4 @@
+using OldBit.Beeper.Extensions;
 using OldBit.Beeper.Helpers;
 
 namespace OldBit.Beeper.IO;
@@ -19,7 +20,7 @@ internal PcmDataReader(Stream input, AudioFormat format)
 
     internal int Read(Span<float> buffer)
     {
-        var byteSize = AudioFormatHelper.GetByteSize(_format);
+        var byteSize = _format.GetByteSize();
         var byteBuffer = new byte[buffer.Length * byteSize];
         var bytesRead = _stream.Read(byteBuffer, 0, buffer.Length * byteSize);
 

src/Demo/Generator/SinWaveGenerator.cs

@@ -1,4 +1,5 @@
 using OldBit.Beeper;
+using OldBit.Beeper.Extensions;
 using OldBit.Beeper.Helpers;
 
 namespace Demo.Generator;
@@ -17,7 +18,7 @@ public IEnumerable<byte> Generate(float frequency, TimeSpan duration)
     {
         var sampleLength = sampleRate / frequency;
 
-        var byteSize = AudioFormatHelper.GetByteSize(format) * channelCount;
+        var byteSize = format.GetByteSize() * channelCount;
         var bufferSize = CalculateBufferSize(duration);
 
         for (var i = 0; i < bufferSize / byteSize; i++)
@@ -73,7 +74,7 @@ public IEnumerable<byte> Generate(float frequency, TimeSpan duration)
     /// <returns>The calculated buffer size.</returns>
     private int CalculateBufferSize(TimeSpan duration)
     {
-        var size = AudioFormatHelper.GetByteSize(format) * channelCount * sampleRate * duration.TotalSeconds;
+        var size = format.GetByteSize() * channelCount * sampleRate * duration.TotalSeconds;
 
         return (int)Math.Ceiling(size / 4) * 4;
     }

tests/Beeper.UnitTests/AudioFormatHelperTests.cs

@@ -1,3 +1,4 @@
+using OldBit.Beeper.Extensions;
 using OldBit.Beeper.Helpers;
 
 namespace OldBit.Beeper.UnitTests;
@@ -10,7 +11,7 @@ public class AudioFormatHelperTests
     [InlineData(AudioFormat.Float32BitLittleEndian, 4)]
     public void GetByteSize_ShouldReturnCorrectNumberOfBytes(AudioFormat audioFormat, int expectedBytes)
     {
-        var numberOfBytes = AudioFormatHelper.GetByteSize(audioFormat);
+        var numberOfBytes = audioFormat.GetByteSize();
 
         Assert.Equal(expectedBytes, numberOfBytes);
     }