75 lines
1.9 KiB
C#
75 lines
1.9 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2013 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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using System;
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using System.IO;
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using System.Text;
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namespace OpenRA.FileFormats
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{
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public class WavLoader
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{
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public readonly int FileSize;
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public readonly string Format;
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public readonly int FmtChunkSize;
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public readonly int AudioFormat;
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public readonly int Channels;
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public readonly int SampleRate;
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public readonly int ByteRate;
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public readonly int BlockAlign;
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public readonly int BitsPerSample;
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public readonly int DataSize;
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public readonly byte[] RawOutput;
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public WavLoader(Stream s)
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{
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while (s.Position < s.Length)
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{
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if ((s.Position & 1) == 1)
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s.ReadByte(); // Alignment
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var type = s.ReadASCII(4);
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switch (type)
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{
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case "RIFF":
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FileSize = s.ReadInt32();
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Format = s.ReadASCII(4);
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if (Format != "WAVE")
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throw new NotSupportedException("Not a canonical WAVE file.");
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break;
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case "fmt ":
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FmtChunkSize = s.ReadInt32();
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if (FmtChunkSize != 16)
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throw new NotSupportedException("{0} fmt chunk size is not a supported encoding scheme.".F(FmtChunkSize));
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AudioFormat = s.ReadInt16();
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if (AudioFormat != 1)
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throw new NotSupportedException("Non-PCM compression is not supported.");
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Channels = s.ReadInt16();
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SampleRate = s.ReadInt32();
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ByteRate = s.ReadInt32();
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BlockAlign = s.ReadInt16();
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BitsPerSample = s.ReadInt16();
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break;
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case "data":
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DataSize = s.ReadInt32();
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RawOutput = s.ReadBytes(DataSize);
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break;
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default:
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// Ignore unknown chunks
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var chunkSize = s.ReadInt32();
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s.ReadBytes(chunkSize);
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break;
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}
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}
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}
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}
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} |