public void RenderAndRunAudio(AudioCaptureGraph acg, bool playIt)
{
if (acg == null)
{
throw new ArgumentNullException("Can't render an audio graph without an audio capture device");
}
if (playIt)
{
Log("Playing audio (render and run graph) - " + acg.Source.FriendlyName);
// Re-add the renderer in case they changed it since the last
// time they played the audio
acg.AddRenderer((FilterInfo)cboSpeakers.SelectedItem);
acg.Run();
}
else
{
Log("Stop audio (stop and unrender graph) - " + acg.Source.FriendlyName);
acg.Stop();
acg.RemoveRenderer();
}
Log(FilterGraph.Debug(acg.IFilterGraph));
}
private void DeactivateAudioCapability()
{
RenderAndRunAudio(acg, false);
acg = null;
ac.DeactivateMicrophone();
}
private void ActivateAudioCapability(FilterInfo fi)
{
ac = new AudioCapability(fi);
ac.SetLogger(new AVLogger(Log));
ac.ActivateMicrophone();
acg = ac.AudioCaptureGraph;
RenderAndRunAudio(acg, ckPlayAudio.Checked);
}
/// <summary>
/// Save the microphone's current settings to the registry. This only applies to
/// audio sources, not DV sources
/// </summary>
public void SaveMicrophoneSettings()
{
AudioCaptureGraph acg = cg as AudioCaptureGraph;
if (acg != null)
{
AVReg.WriteValue(DeviceKey(), AVReg.MicrophoneSourceIndex,
acg.Source.InputPinIndex);
SaveDeviceSettings();
}
}
/// <summary>
/// Restore the audio device input pin setting from the registry. Not applicable to DV sources
/// </summary>
private void RestoreMicrophoneSettings()
{
AudioCaptureGraph acg = cg as AudioCaptureGraph;
if (acg != null)
{
object setting = AVReg.ReadValue(DeviceKey(), AVReg.MicrophoneSourceIndex);
if (setting != null)
{
if ((int)setting < cg.Source.InputPins.Count)
{
acg.AudioSource.InputPinIndex = (int)setting;
}
}
}
}
/// <summary>
/// Creates the actual FilgraphManager with the chosen microphone
/// </summary>
private void CreateAudioGraph(FilterInfo fi)
{
Debug.Assert(cg == null);
if (DVSource.IsDVSourceWithAudio(fi))
{
cg = DVCaptureGraph.GetInstance(fi);
Log(((DVCaptureGraph)cg).DVSource.Dump());
}
else
{
// Create the graph, which creates the source filter
cg = new AudioCaptureGraph(fi);
Log(((AudioCaptureGraph)cg).AudioSource.Dump());
}
}
/// <summary>
/// Input pin change. Not applicable to DV sources
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void cboMicrophonePins_SelectedIndexChanged(object sender, System.EventArgs e)
{
AudioCaptureGraph acg = ac.CaptureGraph as AudioCaptureGraph;
if (acg == null)
{
return;
}
if (ckTestAudio.Checked)
{
ckTestAudio.Checked = false;
}
acg.AudioSource.InputPinIndex = cboMicrophonePins.SelectedIndex;
ac.SaveMicrophoneSettings();
}
/// <summary>
/// Restore custom buffer settings from the registry, if any. This doesn't seem to work with DV Sources.
/// It is also not relevant for the Opus Encoder since the settings will be overridden later in that case.
/// </summary>
private void RestoreBufferSettings()
{
if (cg is AudioCaptureGraph)
{
AudioCaptureGraph acg = (AudioCaptureGraph)cg;
object bufSz = AVReg.ReadValue(DeviceKey(), AVReg.AudioBufferSize);
if (bufSz != null)
{
acg.AudioSource.BufferSize = (int)bufSz;
}
object bufCnt = AVReg.ReadValue(DeviceKey(), AVReg.AudioBufferCount);
if (bufCnt != null)
{
acg.AudioSource.BufferCount = (int)bufCnt;
}
}
}
/// <summary>
/// Restore the selected audio input. If it is a DV source, we have no choices.
/// </summary>
private void RestoreInputPin()
{
if (ac.CaptureGraph is AudioCaptureGraph)
{
AudioCaptureGraph acg = ac.CaptureGraph as AudioCaptureGraph;
foreach (IPin pin in acg.AudioSource.InputPins)
{
cboMicrophonePins.Items.Add(Pin.Name(pin));
}
cboMicrophonePins.Enabled = acg.AudioSource.InputPins.Count > 1;
if (cboMicrophonePins.Items.Count > 0)
{
cboMicrophonePins.SelectedIndex = acg.AudioSource.InputPinIndex;
}
}
else if (ac.CaptureGraph is DVCaptureGraph)
{
cboMicrophonePins.Items.Add("DV Audio");
cboMicrophonePins.Enabled = false;
cboMicrophonePins.SelectedIndex = 0;
}
}
public void RenderAndRunAudio(AudioCaptureGraph acg)
{
RenderAndRunAudio(acg, ckPlayAudio.Checked);
}