43 lines
1.4 KiB
C#
43 lines
1.4 KiB
C#
using System;
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using System.IO;
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using NAudio.MediaFoundation;
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// ReSharper disable once CheckNamespace
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namespace NAudio.Wave
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{
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/// <summary>
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/// MediaFoundationReader supporting reading from a stream
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/// </summary>
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public class StreamMediaFoundationReader : MediaFoundationReader
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{
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private readonly Stream stream;
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/// <summary>
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/// Constructs a new media foundation reader from a stream
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/// </summary>
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public StreamMediaFoundationReader(Stream stream, MediaFoundationReaderSettings settings = null)
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{
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this.stream = stream;
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Init(settings);
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}
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/// <summary>
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/// Creates the reader
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/// </summary>
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protected override IMFSourceReader CreateReader(MediaFoundationReaderSettings settings)
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{
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var ppSourceReader = MediaFoundationApi.CreateSourceReaderFromByteStream(MediaFoundationApi.CreateByteStream(new ComStream(stream)));
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ppSourceReader.SetStreamSelection(-2, false);
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ppSourceReader.SetStreamSelection(-3, true);
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ppSourceReader.SetCurrentMediaType(-3, IntPtr.Zero, new MediaType
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{
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MajorType = MediaTypes.MFMediaType_Audio,
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SubType = settings.RequestFloatOutput ? AudioSubtypes.MFAudioFormat_Float : AudioSubtypes.MFAudioFormat_PCM
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}.MediaFoundationObject);
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return ppSourceReader;
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}
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}
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}
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