41 lines
1.2 KiB
C#
41 lines
1.2 KiB
C#
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using System;
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using System.IO;
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// This file is part of the ANX.Framework and originally taken from
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// the AC.AL OpenAL library, released under the MIT License.
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// For details see: http://acal.codeplex.com/license
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namespace WaveUtils
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{
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public static class IEEEFloat
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{
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public static void ConvertToPcm(WaveInfo data, int resultChannelCount)
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{
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bool is64BitFloat = data.BitsPerSample == 64;
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using (BinaryReader sourceReader = new BinaryReader(new MemoryStream(data.Data)))
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{
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MemoryStream destStream = new MemoryStream();
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BinaryWriter destWriter = new BinaryWriter(destStream);
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int length = data.Data.Length / (is64BitFloat ? 8 : 4);
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int increment = 1;
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if (data.Channels == 2 && resultChannelCount == 1)
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increment = 2;
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data.Channels = resultChannelCount;
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data.ALFormat = data.Channels == 1 ? ALFormat.Mono16 : ALFormat.Stereo16;
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for (int index = 0; index < length; index += increment)
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{
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double value = is64BitFloat ? sourceReader.ReadDouble() : sourceReader.ReadSingle();
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destWriter.Write((short)(value * 32767));
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}
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data.Data = destStream.ToArray();
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}
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}
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}
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}
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