88 lines
2.7 KiB
C#
88 lines
2.7 KiB
C#
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using System;
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using System.IO;
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using System.Runtime.InteropServices;
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namespace MoonWorks.Audio
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{
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public class StaticSound : Sound, IDisposable
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{
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internal FAudio.FAudioBuffer Handle;
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private bool IsDisposed;
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public uint LoopStart { get; set; } = 0;
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public uint LoopLength { get; set; } = 0;
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public static StaticSound FromOgg(FileInfo fileInfo)
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{
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var filePointer = FAudio.stb_vorbis_open_filename(fileInfo.FullName, out var error, IntPtr.Zero);
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if (error != 0)
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{
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throw new AudioLoadException("Error loading file!");
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}
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var info = FAudio.stb_vorbis_get_info(filePointer);
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var bufferSize = (uint)(info.sample_rate * info.channels);
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var buffer = new float[bufferSize];
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FAudio.stb_vorbis_close(filePointer);
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return new StaticSound(
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buffer,
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0,
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(ushort) info.channels,
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info.sample_rate
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);
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}
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public StaticSound(
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float[] buffer,
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uint bufferOffset,
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ushort channels,
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uint samplesPerSecond
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) : base(channels, samplesPerSecond) {
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var bufferLength = 4 * buffer.Length;
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Handle = new FAudio.FAudioBuffer();
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Handle.Flags = FAudio.FAUDIO_END_OF_STREAM;
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Handle.pContext = IntPtr.Zero;
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Handle.AudioBytes = (uint) bufferLength;
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Handle.pAudioData = Marshal.AllocHGlobal((int) bufferLength);
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Marshal.Copy(buffer, (int) bufferOffset, Handle.pAudioData, (int) bufferLength);
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Handle.PlayBegin = 0;
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Handle.PlayLength = (
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Handle.AudioBytes /
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(uint) Format.nChannels /
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(uint) (Format.wBitsPerSample / 8)
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);
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}
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protected virtual void Dispose(bool disposing)
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{
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if (!IsDisposed)
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{
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if (disposing)
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{
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// dispose managed state (managed objects)
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}
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Marshal.FreeHGlobal(Handle.pAudioData);
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IsDisposed = true;
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}
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}
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// override finalizer only if 'Dispose(bool disposing)' has code to free unmanaged resources
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~StaticSound()
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{
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// Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
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Dispose(disposing: false);
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}
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public void Dispose()
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{
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// Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
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Dispose(disposing: true);
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GC.SuppressFinalize(this);
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}
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}
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}
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