80 lines
2.0 KiB
C#
80 lines
2.0 KiB
C#
using System;
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using System.Runtime.InteropServices;
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namespace MoonWorks.Audio
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{
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/// <summary>
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/// Contains raw audio data in a specified Format. <br/>
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/// Submit this to a SourceVoice to play audio.
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/// </summary>
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public class AudioBuffer : AudioResource
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{
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IntPtr BufferDataPtr;
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uint BufferDataLength;
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private bool OwnsBufferData;
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public Format Format { get; }
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/// <summary>
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/// Create a new AudioBuffer.
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/// </summary>
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/// <param name="ownsBufferData">If true, the buffer data will be destroyed when this AudioBuffer is destroyed.</param>
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public AudioBuffer(
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AudioDevice device,
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Format format,
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IntPtr bufferPtr,
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uint bufferLengthInBytes,
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bool ownsBufferData) : base(device)
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{
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Format = format;
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BufferDataPtr = bufferPtr;
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BufferDataLength = bufferLengthInBytes;
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OwnsBufferData = ownsBufferData;
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}
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/// <summary>
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/// Create another AudioBuffer from this audio buffer.
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/// It will not own the buffer data.
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/// </summary>
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/// <param name="offset">Offset in bytes from the top of the original buffer.</param>
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/// <param name="length">Length in bytes of the new buffer.</param>
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/// <returns></returns>
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public AudioBuffer Slice(int offset, uint length)
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{
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return new AudioBuffer(Device, Format, BufferDataPtr + offset, length, false);
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}
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/// <summary>
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/// Create an FAudioBuffer struct from this AudioBuffer.
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/// </summary>
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/// <param name="loop">Whether we should set the FAudioBuffer to loop.</param>
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public FAudio.FAudioBuffer ToFAudioBuffer(bool loop = false)
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{
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return new FAudio.FAudioBuffer
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{
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Flags = FAudio.FAUDIO_END_OF_STREAM,
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pContext = IntPtr.Zero,
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pAudioData = BufferDataPtr,
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AudioBytes = BufferDataLength,
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PlayBegin = 0,
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PlayLength = 0,
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LoopBegin = 0,
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LoopLength = 0,
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LoopCount = loop ? FAudio.FAUDIO_LOOP_INFINITE : 0
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};
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}
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protected override unsafe void Dispose(bool disposing)
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{
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if (!IsDisposed)
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{
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if (OwnsBufferData)
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{
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NativeMemory.Free((void*) BufferDataPtr);
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}
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}
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base.Dispose(disposing);
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}
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}
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}
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