public Task OpenAsync()
{
if (synth != null)
{
throw new InvalidOperationException("The MIDI output is already open.");
}
settings = new Settings();
if (midi_access.ConfigureSettings != null)
{
midi_access.ConfigureSettings(settings);
}
synth = new Synth(settings);
synth.HandleError = midi_access.HandleNativeError;
foreach (var factory in midi_access.SoundFontLoaderFactories)
{
synth.AddSoundFontLoader(factory(synth));
}
foreach (var sf in midi_access.SoundFonts)
{
synth.LoadSoundFont(sf, false);
}
adriver = new AudioDriver(synth.Settings, synth);
return(Task.FromResult(true));
}
public FluidsynthMidiReceiver(Context context)
{
#if MIDI_MANAGER
access = new FluidsynthMidiAccess();
access.ConfigureSettings = (settings) => {
#else
var settings = new Settings();
#endif
settings [ConfigurationKeys.AudioDriver].StringValue = "oboe";
//settings [ConfigurationKeys.SynthParallelRender].IntValue = 0;
//settings [ConfigurationKeys.SynthThreadsafeApi].IntValue = 0;
//settings [ConfigurationKeys.AudioPeriods].IntValue = 16;
//settings [ConfigurationKeys.AudioPeriods].IntValue = 64;
settings [ConfigurationKeys.AudioSampleFormat].StringValue = "16bits"; // float or 16bits
var manager = context.GetSystemService(Context.AudioService).JavaCast <AudioManager> ();
// Note that it is NOT audio sample rate but *synthesizing* sample rate.
// So it is kind of wrong assumption that AudioManager.PropertyOutputSampleRate would give the best outcome...
//var sr = double.Parse (manager.GetProperty (AudioManager.PropertyOutputSampleRate));
//settings [ConfigurationKeys.SynthSampleRate].DoubleValue = sr;
settings [ConfigurationKeys.SynthSampleRate].DoubleValue = 11025;
var fpb = double.Parse(manager.GetProperty(AudioManager.PropertyOutputFramesPerBuffer));
settings [ConfigurationKeys.AudioPeriodSize].IntValue = (int)fpb;
#if MIDI_MANAGER
};
SynthAndroidExtensions.GetSoundFonts(access.SoundFonts, context, predefined_temp_path);
output = access.OpenOutputAsync(access.Outputs.First().Id).Result;
#else
syn = new Synth(settings);
var sfs = new List <string> ();
SynthAndroidExtensions.GetSoundFonts(sfs, context, predefined_temp_path);
asset_sfloader = new AndroidNativeAssetSoundFontLoader(settings, context.Assets);
syn.AddSoundFontLoader(asset_sfloader);
foreach (var sf in sfs)
{
syn.LoadSoundFont(sf, false);
}
adriver = new AudioDriver(syn.Settings, syn);
#endif
}