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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 WavImporter : Importer |
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{ |
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private readonly bool convertToDemo; |
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|
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public WavImporter(bool toDemo) |
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: base(toDemo?InstanceFileHeader.OniMacTemplateChecksum:InstanceFileHeader.OniPCTemplateChecksum) |
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{ |
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convertToDemo = toDemo; |
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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 wav = WavFile.FromFile(filePath); |
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|
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if (wav.Format != WavFormat.Pcm && wav.Format != WavFormat.Adpcm) |
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{ |
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Console.Error.WriteLine("Unsupported WAV format (0x{0:X})", wav.Format); |
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return; |
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} |
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|
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if (wav.ChannelCount != 1 && wav.ChannelCount != 2) |
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{ |
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Console.Error.WriteLine("Unsupported number of channels ({0})", wav.ChannelCount); |
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return; |
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} |
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|
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if (wav.SampleRate != 22050 && wav.SampleRate != 44100) |
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{ |
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Console.Error.WriteLine("Unsupported sample rate ({0} Hz)", wav.SampleRate); |
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return; |
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} |
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|
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if (wav.ExtraData.Length > 32) |
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throw new NotSupportedException(string.Format("Unsupported wave format extra data size ({0})", wav.ExtraData.Length)); |
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|
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BeginImport(); |
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WriteSNDD(Path.GetFileNameWithoutExtension(filePath), wav); |
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Write(outputDirPath); |
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} |
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|
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private void WriteSNDD(string name, WavFile wav) |
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{ |
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float duration = wav.SoundData.Length * 8.0f / wav.BitsPerSample; |
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duration /= wav.SampleRate; |
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duration /= wav.ChannelCount; |
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duration *= 60.0f; |
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|
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var sndd = CreateInstance(TemplateTag.SNDD, name); |
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if (convertToDemo) |
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{ |
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// TODO: also validate other ADPCM parameters (coefficient table)? |
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if (wav.Format != WavFormat.Adpcm) // Or is PCM supported, actually? |
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Console.WriteLine("Cannot convert to PC demo: ADPCM format required!"); |
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if (wav.SampleRate != 22050) |
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Console.WriteLine("Cannot convert to PC demo: 22050 kHz required!"); |
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if (wav.BlockAlign != 512 * wav.ChannelCount) |
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Console.WriteLine("Cannot convert to PC demo: wrong block alignment!"); |
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if (wav.BitsPerSample != 4) |
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Console.WriteLine("Cannot convert to PC demo: wrong bits per sample!"); |
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|
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using (var writer = sndd.OpenWrite()) |
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{ |
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if (wav.ChannelCount == 2) |
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writer.WriteInt16(3); |
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else |
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writer.WriteInt16(1); |
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writer.WriteInt16(0); |
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writer.Write((int)duration); |
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writer.Write(wav.SoundData.Length); |
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writer.Write(WriteRawPart(wav.SoundData)); |
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} |
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} |
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else |
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{ |
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using (var writer = sndd.OpenWrite()) |
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{ |
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if (wav.Format == WavFormat.Adpcm) |
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writer.WriteInt16(8); |
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else |
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writer.WriteInt16(0); |
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writer.WriteInt16(0); |
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writer.Write((short)wav.Format); |
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writer.WriteInt16(wav.ChannelCount); |
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writer.Write(wav.SampleRate); |
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writer.Write(wav.AverageBytesPerSecond); |
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writer.WriteInt16(wav.BlockAlign); |
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writer.WriteInt16(wav.BitsPerSample); |
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writer.WriteInt16(wav.ExtraData.Length); |
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writer.Write(wav.ExtraData); |
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writer.Skip(32 - wav.ExtraData.Length); |
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writer.Write((short)duration); |
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writer.Write(wav.SoundData.Length); |
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writer.Write(WriteRawPart(wav.SoundData)); |
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} |
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} |
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} |
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} |
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} |
