public AudioCaptureDevice(string deviceName, AudioFormatEnum format, int frequency, int maxSampleCount)
: base(false)
{
Handle = Alc.alcCaptureOpenDevice(deviceName, frequency, (int)format, maxSampleCount);
this.format = format;
this.maxSampleCount = maxSampleCount;
this.frequency = frequency;
if (Handle == IntPtr.Zero)
{
throw new OpenAlException("The Device failed to initialize");
}
}
/// <summary>
/// Converts a AudioFormatEnum value to a corresponding string value
/// </summary>
/// <param name="enumValue">The AudioFormatEnum value to convert</param>
/// <returns>The representative string value</returns>
public static string ToValue(AudioFormatEnum enumValue)
{
switch (enumValue)
{
//only valid enum elements can be used
//this is necessary to avoid errors
case AudioFormatEnum.MP3:
case AudioFormatEnum.WAV:
return(stringValues[(int)enumValue]);
//an invalid enum value was requested
default:
return(null);
}
}
/// <summary>
/// Create capture buffer, output wave file and stream recorded samples to disk every 50 milliseconds
/// </summary>
public void StreamAudio()
{
AudioListener.Position = new Vector3D(0, 0, 0);
AudioListener.Velocity = new Vector3D(0, 0, 0);
AudioListener.Orientation = new Orientation(new Vector3D(1, 1, 0), new Vector3D(0, 1, 0));
Byte[] recordedData = null;
AudioFormatEnum HQcaptureFormat = AudioFormatEnum.Stereo16;
int HQcaptureFrequency = 44100;
int HQcaptureBufferSize = 1028000;
//Console.WriteLine("Creating File {0}", Environment.CurrentDirectory + "\\test.wav");
if (_FileName == "")
{
_FileName = "undefined.wav";
}
WaveFileWriter wave = new WaveFileWriter();
wave.CreateFile(_FileName, HQcaptureFormat);
using (AudioCaptureDevice g = new AudioCaptureDevice(null, HQcaptureFormat, HQcaptureFrequency, HQcaptureBufferSize))
{
//Console.WriteLine("Started Recording (press Enter To Stop)");
g.Start();
while (OpenALRecoding)
{
Thread.Sleep(50);
int samplecount = g.AvaliabeSampleCount;
recordedData = g.CaptureSamples();
wave.WriteCaptured(recordedData);
}
g.Stop();
//Console.WriteLine("Stopped Recording");
}
wave.CloseFile();
//Console.WriteLine("File Saved");
}
public void BufferData(AudioFormatEnum format, int frequency, Byte[] data, int dataLength)
{
Al.alBufferData (ID, (int)format, data, dataLength, frequency);
OpenAlException.CheckAl ();
}
public void BufferData(AudioFormatEnum format, int frequency, Byte[] data)
{
this.BufferData (format, frequency, data, data.Length);
}
public static int GetSampleSize(AudioFormatEnum format)
{
switch (format)
{
case AudioFormatEnum.Mono16:
return 2;
case AudioFormatEnum.Mono8:
return 1;
case AudioFormatEnum.Stereo16:
return 4;
case AudioFormatEnum.Stereo8:
return 2;
default:
throw new Exception ();
}
}
public AudioSection(string id, int delayInMs, string title, string caption, int durationInSeconds, AudioFormatEnum format, string url, string encodingType, bool downloadable, bool buffer, bool animateEmotion) : base(id, SectionTypeEnum.Audio, delayInMs)
{
this.Title = title;
this.Caption = caption;
this.DurationInSeconds = durationInSeconds;
this.Format = format;
this.Url = url;
this.EncodingType = encodingType;
this.Downloadable = downloadable;
this.Buffer = buffer;
this.AnimateEmotion = animateEmotion;
}
