public override SoundEffectContent Process(AudioContent input, ContentProcessorContext context)
{
// Fallback if we aren't buiding for iOS.
var platform = ContentHelper.GetMonoGamePlatform();
if (platform != MonoGamePlatform.iOS)
{
return(base.Process(input, context));
}
var targetSampleRate = input.Format.SampleRate;
// XNA SoundEffects have their sample rate changed based on the quality setting on the processor.
//http://blogs.msdn.com/b/etayrien/archive/2008/09/22/audio-input-and-output-formats.aspx
switch (this.Quality)
{
case ConversionQuality.Best:
break;
case ConversionQuality.Medium:
targetSampleRate = (int)(targetSampleRate * 0.75f);
break;
case ConversionQuality.Low:
targetSampleRate = (int)(targetSampleRate * 0.5f);
break;
}
targetSampleRate = Math.Max(8000, targetSampleRate);
var wavStream = new MemoryStream();
WaveFormat outputFormat = AudioConverter.ConvertFile(input.FileName, wavStream, AudioFileType.Wav, targetSampleRate,
input.Format.BitsPerSample, input.Format.ChannelCount);
var outputData = new ReadOnlyCollection <byte>(wavStream.ToArray());
wavStream.Close();
var waveFormatHeader = writeWavHeader(outputFormat);
// SoundEffectContent is a sealed class, construct it using reflection
var type = typeof(SoundEffectContent);
ConstructorInfo c = type.GetConstructor(BindingFlags.NonPublic | BindingFlags.Instance,
null, new Type[] { typeof(ReadOnlyCollection <byte>), typeof(ReadOnlyCollection <byte>), typeof(int), typeof(int), typeof(int) }, null);
var outputSoundEffectContent = (SoundEffectContent)c.Invoke(new Object[] { waveFormatHeader, outputData, input.LoopStart, input.LoopLength, (int)input.Duration.TotalMilliseconds });
return(outputSoundEffectContent);
}
public override SongContent Process(AudioContent input, ContentProcessorContext context)
{
// Fallback if we aren't buiding for iOS.
var platform = ContentHelper.GetMonoGamePlatform();
if (platform != MonoGamePlatform.iOS && platform != MonoGamePlatform.Linux)
{
return(base.Process(input, context));
}
//TODO: If quality isn't best and it's a .wma, don't compress to MP3. Leave it as a .wav instead
string outputType = (platform == MonoGamePlatform.iOS) ? "mp3" : "wav";
string outputFilename = Path.ChangeExtension(context.OutputFilename, outputType);
string directoryName = Path.GetDirectoryName(outputFilename);
if (!Directory.Exists(directoryName))
{
Directory.CreateDirectory(directoryName);
}
var inputFilename = Path.GetFullPath(input.FileName);
// XNA's songprocessor converts the bitrate on the input file based
// on it's conversion quality.
//http://blogs.msdn.com/b/etayrien/archive/2008/09/22/audio-input-and-output-formats.aspx
int desiredOutputBitRate = 0;
switch (this.Quality)
{
case ConversionQuality.Low:
desiredOutputBitRate = 96000;
break;
case ConversionQuality.Medium:
desiredOutputBitRate = 128000;
break;
case ConversionQuality.Best:
desiredOutputBitRate = 192000;
break;
}
AudioFileType target = (platform == MonoGamePlatform.iOS) ? AudioFileType.Mp3 : AudioFileType.Wav;
// Create a new file if we need to.
FileStream outputStream = input.FileType != target ? new FileStream(outputFilename, FileMode.Create) : null;
if (input.FileType != target)
{
AudioConverter.ConvertFile(inputFilename, outputStream, target, desiredOutputBitRate,
input.Format.BitsPerSample, input.Format.ChannelCount);
}
else
{
File.Copy(inputFilename, outputFilename, true);
}
if (outputStream != null)
{
outputStream.Close();
}
context.AddOutputFile(outputFilename);
// SoundEffectContent is a sealed class, construct it using reflection
var type = typeof(SongContent);
ConstructorInfo c = type.GetConstructor(BindingFlags.NonPublic | BindingFlags.Instance,
null, new Type[] { typeof(string), typeof(int) }, null);
var outputSongContent = (SongContent)c.Invoke(new Object[] { Path.GetFileName(outputFilename), (int)input.Duration.TotalMilliseconds });
return(outputSongContent);
}
