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30 lines
1.7 KiB
C#
30 lines
1.7 KiB
C#
using ComLight;
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using System;
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using System.Runtime.InteropServices;
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namespace Whisper
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{
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/// <summary>A buffer with a chunk of audio.</summary>
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/// <remarks>Note the interface supports both marshaling directions.<br/>
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/// You can implement this interface in C#, to supply PCM audio data to the native code.</remarks>
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/// <seealso href="https://gist.github.com/Const-me/082c8d96eb10b76058c5dd9c68b5bfe1" />
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[ComInterface( "013583aa-c9eb-42bc-83db-633c2c317051", eMarshalDirection.BothWays )]
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public interface iAudioBuffer: IDisposable
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{
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/// <summary>Count of samples in the buffer, equal to ( length in seconds ) * 16000</summary>
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int countSamples();
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/// <summary>Unmanaged pointer to the internal buffer with single-channel <c>float</c> PCM samples @ 16 kHz sample rate.</summary>
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/// <remarks>If you implementing this interface in C# and your audio data is on the managed heap, use <see cref="GCHandle" /> to make sure it doesn't move.<br/>
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/// Or better yet, move the data to unmanaged buffer allocated with <see cref="Marshal.AllocHGlobal(int)" /> or <see cref="Marshal.AllocCoTaskMem(int)" /> method.</remarks>
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IntPtr getPcmMono();
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/// <summary>Unmanaged pointer to the internal buffer with interleaved stereo <c>float</c> PCM samples @ 16 kHz sample rate.</summary>
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/// <remarks>When the buffer doesn’t have stereo data, the method should return <see cref="IntPtr.Zero" />.</remarks>
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IntPtr getPcmStereo();
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/// <summary>Start time of the buffer, relative to the start of the media.</summary>
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/// <remarks>The value is used to produce timestamps in <see cref="sSegment.time" /> and <see cref="sToken.time" /> fields.</remarks>
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void getTime( out TimeSpan time );
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}
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} |