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using System; |
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using System.IO; |
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|
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namespace Oni.Sound |
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{ |
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internal class AifImporter : Importer |
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{ |
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private const int fcc_ima4 = 0x696d6134; |
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private static readonly byte[] sampleRate = new byte[10] { 0x40, 0x0d, 0xac, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
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|
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public AifImporter() |
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: base(InstanceFileHeader.OniMacTemplateChecksum) |
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{ |
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} |
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|
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public override void Import(string filePath, string outputDirPath) |
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{ |
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var aif = AifFile.FromFile(filePath); |
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|
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if (aif.Format != fcc_ima4) |
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{ |
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Console.Error.WriteLine("Unsupported AIF compression (0x{0:X})", aif.Format); |
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return; |
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} |
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|
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if (!Utils.ArrayEquals(aif.SampleRate, sampleRate)) |
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{ |
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Console.Error.WriteLine("Unsupported sample rate"); |
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return; |
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} |
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|
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if (aif.ChannelCount != 1 && aif.ChannelCount != 2) |
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{ |
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Console.Error.WriteLine("Unsupported number of channels ({0})", aif.ChannelCount); |
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return; |
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} |
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|
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BeginImport(); |
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WriteSNDD(Path.GetFileNameWithoutExtension(filePath), aif); |
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Write(outputDirPath); |
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} |
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|
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private void WriteSNDD(string name, AifFile aif) |
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{ |
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int duration = (int)(aif.SampleFrames * 64.0f / 22050.0f * 60.0f); |
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|
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var sndd = CreateInstance(TemplateTag.SNDD, name); |
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|
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using (var writer = sndd.OpenWrite()) |
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{ |
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writer.Write((aif.ChannelCount == 1) ? 1 : 3); |
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writer.Write(duration); |
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writer.Write(aif.SoundData.Length); |
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writer.Write(WriteRawPart(aif.SoundData)); |
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writer.Skip(8); |
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} |
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} |
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} |
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} |
