private void DeckLinkInput_CaptureChanged(bool formatChanged)
{
logger.Debug("DeckLinkInput_StateChanged(...) " + deckLinkInput.State + " " + formatChanged);
var state = deckLinkInput.State;
if (formatChanged)
{
if (state == DeckLink.CaptureState.Starting)
{// new format...
AudioRendererArgs audioArgs = GetAudioRenderArgs();
VideoRendererArgs videoArgs = GetVideoRenderArgs();
renderSession?.Setup(videoArgs, audioArgs);
OnCaptureInitialized();
}
else if (state == DeckLink.CaptureState.Capturing)
{// new format, restart media renderers...
if (renderSession != null)
{
renderSession.Close();
AudioRendererArgs audioArgs = GetAudioRenderArgs();
VideoRendererArgs videoArgs = GetVideoRenderArgs();
renderSession.Setup(videoArgs, audioArgs);
OnCaptureInitialized();
renderSession.Start();
}
}
}
else
{
if (state == DeckLink.CaptureState.Capturing)
{
renderSession?.Start();
OnCaptureStarted();
}
else if (state == DeckLink.CaptureState.Stopped)
{
errorCode = deckLinkInput.ErrorCode;
deckLinkInput.Shutdown();
renderSession?.Close();
OnCaptureStopped();
}
}
}
private void InitRenderSession()
{
AudioRendererArgs audioArgs = null;
if (deckLinkInput.AudioEnabled)
{
var sampleRate = deckLinkInput.AudioSampleRate;
var bitsPerSample = deckLinkInput.AudioBitsPerSample;
var channelsCount = deckLinkInput.AudioChannelsCount;
audioArgs = new AudioRendererArgs
{
DeviceId = "",
SampleRate = sampleRate,
BitsPerSample = bitsPerSample,
Channels = channelsCount,
Encoding = MediaToolkit.Core.WaveEncodingTag.PCM,
};
}
var videoResoulution = deckLinkInput.FrameSize;
var fourCC = deckLinkInput.VideoFormat.FourCC;
var videoArgs = new VideoRendererArgs
{
hWnd = windowHandle,
Resolution = videoResoulution,
FourCC = fourCC,
};
renderSession.Setup(videoArgs, audioArgs);
deckLinkInput.VideoDataArrived += CurrentDevice_VideoDataArrived;
deckLinkInput.AudioDataArrived += CurrentDevice_AudioDataArrived;
syncContext.Send(_ =>
{
ShowVideo();
}, null);
}
private AudioRendererArgs GetAudioRenderArgs()
{
AudioRendererArgs audioArgs = null;
if (deckLinkInput.AudioEnabled)
{
var sampleRate = deckLinkInput.AudioSampleRate;
var bitsPerSample = deckLinkInput.AudioBitsPerSample;
var channelsCount = deckLinkInput.AudioChannelsCount;
audioArgs = new AudioRendererArgs
{
DeviceId = "",
SampleRate = sampleRate,
BitsPerSample = bitsPerSample,
Channels = channelsCount,
Encoding = MediaToolkit.Core.WaveEncodingTag.PCM,
};
}
return(audioArgs);
}
private void buttonAudioSetup_Click(object sender, EventArgs e)
{
try
{
MMDevice device = null;
var deviceEnum = new MMDeviceEnumerator();
if (deviceEnum.HasDefaultAudioEndpoint(DataFlow.Render, Role.Console))
{
device = deviceEnum.GetDefaultAudioEndpoint(DataFlow.Render, Role.Console);
}
string deviceId = device.ID;
NAudio.Wave.WaveFormat deviceFormat = device.AudioClient.MixFormat;
device.Dispose();
signalGenerator = new SignalGenerator(16000, 2);
var signalFormat = signalGenerator.WaveFormat;
audioRenderer = new MfAudioRenderer();
AudioRendererArgs audioArgs = new AudioRendererArgs
{
DeviceId = "",
SampleRate = signalFormat.SampleRate,
BitsPerSample = signalFormat.BitsPerSample,
Encoding = (WaveEncodingTag)signalFormat.Encoding,
Channels = signalFormat.Channels,
};
audioRenderer.Setup(audioArgs);
}
catch (Exception ex)
{
logger.Error(ex);
}
}
