1 | using System; |
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2 | using System.IO; |
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3 | |
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4 | namespace Oni.Sound |
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5 | { |
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6 | internal class AifImporter : Importer |
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7 | { |
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8 | private const int fcc_ima4 = 0x696d6134; |
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9 | private static readonly byte[] sampleRate = new byte[10] { 0x40, 0x0d, 0xac, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
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10 | |
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11 | public AifImporter() |
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12 | : base(InstanceFileHeader.OniMacTemplateChecksum) |
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13 | { |
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14 | } |
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15 | |
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16 | public override void Import(string filePath, string outputDirPath) |
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17 | { |
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18 | var aif = AifFile.FromFile(filePath); |
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19 | |
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20 | if (aif.Format != fcc_ima4) |
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21 | { |
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22 | Console.Error.WriteLine("Unsupported AIF compression (0x{0:X})", aif.Format); |
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23 | return; |
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24 | } |
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25 | |
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26 | if (!Utils.ArrayEquals(aif.SampleRate, sampleRate)) |
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27 | { |
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28 | Console.Error.WriteLine("Unsupported sample rate"); |
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29 | return; |
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30 | } |
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31 | |
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32 | if (aif.ChannelCount != 1 && aif.ChannelCount != 2) |
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33 | { |
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34 | Console.Error.WriteLine("Unsupported number of channels ({0})", aif.ChannelCount); |
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35 | return; |
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36 | } |
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37 | |
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38 | BeginImport(); |
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39 | WriteSNDD(Path.GetFileNameWithoutExtension(filePath), aif); |
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40 | Write(outputDirPath); |
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41 | } |
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42 | |
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43 | private void WriteSNDD(string name, AifFile aif) |
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44 | { |
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45 | int duration = (int)(aif.SampleFrames * 64.0f / 22050.0f * 60.0f); |
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46 | |
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47 | var sndd = CreateInstance(TemplateTag.SNDD, name); |
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48 | |
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49 | using (var writer = sndd.OpenWrite()) |
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50 | { |
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51 | writer.Write((aif.ChannelCount == 1) ? 1 : 3); |
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52 | writer.Write(duration); |
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53 | writer.Write(aif.SoundData.Length); |
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54 | writer.Write(WriteRawPart(aif.SoundData)); |
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55 | } |
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56 | } |
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57 | } |
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58 | } |
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