private void init()
{
//this is in the wrong place as I need to pass in canvas size.
//it should be done in the view itself
RecordingSingleton.ReadFileIntoSampleArray();
RunOnUiThread(() => updateChartAndText());
}
async Task ReadAudioAsync()
{
using (var fileStream = new FileStream(filePath, System.IO.FileMode.Create, System.IO.FileAccess.Write)) {
while (true)
{
if (endRecording)
{
endRecording = false;
break;
}
try {
// Keep reading the buffer while there is audio input.
int numBytes = await audioRecord.ReadAsync(audioBuffer, 0, audioBuffer.Length);
await fileStream.WriteAsync(audioBuffer, 0, numBytes);
// Do something with the audio input.
} catch (Exception ex) {
Console.Out.WriteLine(ex.Message);
break;
}
}
fileStream.Close();
}
audioRecord.Stop();
audioRecord.Release();
isRecording = false;
RecordingSingleton.NewRecordingMade();
RaiseRecordingStateChangedEvent();
}
private void DrawGraph(Canvas canvas)
{
var linesToDraw = RecordingSingleton.GetDisplayLines();
var baseLine = RecordingSingleton.GetBaseLine();
if (linesToDraw != null && baseLine != null)
{
canvas.DrawLine(baseLine.Start.X, baseLine.Start.Y, baseLine.End.X, baseLine.End.Y, GetBlue());//base line
for (var i = 0; i < (linesToDraw.Length); i++)
{
var line = linesToDraw[i];
canvas.DrawLine(line.Start.X, line.Start.Y, line.End.X, line.End.Y, GetRed());
}
}
}
private void SendToRecordingArray(List <Int16> toSet)
{
RecordingSingleton.SetSamples(toSet);
}
protected override void OnDraw(Canvas canvas)
{
RecordingSingleton.ProcessDisplayLines(canvas.Width);
DrawGraph(canvas);
DrawInfo(canvas);
}