public ActionResult Get(string name, [FromServices] AppState appState)
{
if (appState is null || appState.Audio is null)
{
return(new EmptyResult());
}
var audioIO = new AudioInputOutput();
var data = new AudioData(
appState.Audio.Settings.SampleRate,
appState.Audio.GetOutputArray(ChannelType.Left),
appState.Audio.GetOutputArray(ChannelType.Right));
var(success, stream) = audioIO.SaveToMemoryStream(data);
if (!success)
{
return(new EmptyResult());
}
// Create a new stream as WaveFileWriter closed memoryStream
var outStream = new MemoryStream(stream.ToArray());
var result = new FileStreamResult(outStream, "audio/wave")
{
FileDownloadName = name + ".wav"
};
return(result);
}
public async Task AudioInputOutputSaveLoadTest()
{
var taskProgress = new Progress <double>();
var taskStatus = new Progress <string>();
var audioInputOutput =
new AudioInputOutput();
await audioInputOutput.Init(taskProgress);
var audioLength = 44100;
var inputAudio = new float[audioLength];
for (var i = 0; i < inputAudio.Length; i++)
{
inputAudio[i] = (float)Math.Sin(2 * Math.PI * i /
((float)audioLength / 5));
}
var audioData =
new AudioDataMono(inputAudio);
for (var index = 0; index < audioData.LengthSamples(); index++)
{
audioData.SetOutputSample(
index,
audioData.GetInputSample(index));
}
audioInputOutput.SetAudioData(audioData);
var testFolder = KnownFolders.MusicLibrary;
var audioOutputFile = await testFolder.GetFileAsync("test.wav");
if (audioOutputFile != null)
{
await audioInputOutput.SaveAudioToFile(audioOutputFile, taskStatus);
}
}