private void btnPreview_Click(object sender, EventArgs e)
{
EncoderDevice video = null;
EncoderDevice audio = null;
GetSelectedVideoAndAudioDevices(out video, out audio);
StopJob();
if (video == null)
{
return;
}
// Starts new job for preview window
_job = new LiveJob();
// Checks for a/v devices
if (video != null && audio != null)
{
// Create a new device source. We use the first audio and video devices on the system
_deviceSource = _job.AddDeviceSource(video, audio);
// Is it required to show the configuration dialogs ?
if(1==2)
{
// Yes
// VFW video device ?
if (lstVideoDevices.SelectedItem.ToString().EndsWith("(VFW)", StringComparison.OrdinalIgnoreCase))
{
// Yes
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VfwFormatDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VfwFormatDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VfwSourceDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VfwSourceDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VfwDisplayDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VfwDisplayDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
}
else
{
// No
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VideoCapturePinDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VideoCapturePinDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VideoCaptureDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VideoCaptureDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VideoCrossbarDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VideoCrossbarDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VideoPreviewPinDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VideoPreviewPinDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VideoSecondCrossbarDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VideoSecondCrossbarDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
}
}
else
{
// No
// Setup the video resolution and frame rate of the video device
// NOTE: Of course, the resolution and frame rate you specify must be supported by the device!
// NOTE2: May be not all video devices support this call, and so it just doesn't work, as if you don't call it (no error is raised)
// NOTE3: As a workaround, if the .PickBestVideoFormat method doesn't work, you could force the resolution in the
// following instructions (called few lines belows): 'panelVideoPreview.Size=' and '_job.OutputFormat.VideoProfile.Size='
// to be the one you choosed (640, 480).
_deviceSource.PickBestVideoFormat(new Size(640, 480), 15);
}
// Get the properties of the device video
SourceProperties sp = _deviceSource.SourcePropertiesSnapshot();
// Resize the preview panel to match the video device resolution set
panelVideoPreview.Size = new Size(sp.Size.Width, sp.Size.Height);
// Setup the output video resolution file as the preview
_job.OutputFormat.VideoProfile.Size = new Size(sp.Size.Width, sp.Size.Height);
// Display the video device properties set
toolStripStatusLabel1.Text = sp.Size.Width.ToString() + "x" + sp.Size.Height.ToString() + " " + sp.FrameRate.ToString() + " fps";
// Sets preview window to winform panel hosted by xaml window
_deviceSource.PreviewWindow = new PreviewWindow(new HandleRef(panelVideoPreview, panelVideoPreview.Handle));
// Make this source the active one
_job.ActivateSource(_deviceSource);
btnGrabImage.Enabled = true;
toolStripStatusLabel1.Text = "Preview activated";
}
else
{
// Gives error message as no audio and/or video devices found
MessageBox.Show("No Video/Audio capture devices have been found.", "Warning");
toolStripStatusLabel1.Text = "No Video/Audio capture devices have been found.";
}
}
private void btnPreview_Click(object sender, EventArgs e)
{
EncoderDevice video = null;
EncoderDevice audio = null;
GetSelectedVideoAndAudioDevices(out video, out audio);
StopJob();
if (video == null)
{
return;
}
// Starts new job for preview window
_job = new LiveJob();
// Checks for a/v devices
if (video != null && audio != null)
{
// Create a new device source. We use the first audio and video devices on the system
_deviceSource = _job.AddDeviceSource(video, audio);
// Is it required to show the configuration dialogs ?
if (checkBoxShowConfigDialog.Checked)
{
// Yes
// VFW video device ?
if (lstVideoDevices.SelectedItem.ToString().EndsWith("(VFW)", StringComparison.OrdinalIgnoreCase))
{
// Yes
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VfwFormatDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VfwFormatDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VfwSourceDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VfwSourceDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VfwDisplayDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VfwDisplayDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
}
else
{
// No
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VideoCapturePinDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VideoCapturePinDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VideoCaptureDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VideoCaptureDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VideoCrossbarDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VideoCrossbarDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VideoPreviewPinDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VideoPreviewPinDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
if (_deviceSource.IsDialogSupported(ConfigurationDialog.VideoSecondCrossbarDialog))
{
_deviceSource.ShowConfigurationDialog(ConfigurationDialog.VideoSecondCrossbarDialog, (new HandleRef(panelVideoPreview, panelVideoPreview.Handle)));
}
}
}
else
{
// No
// Setup the video resolution and frame rate of the video device
// NOTE: Of course, the resolution and frame rate you specify must be supported by the device!
// NOTE2: May be not all video devices support this call, and so it just doesn't work, as if you don't call it (no error is raised)
// NOTE3: As a workaround, if the .PickBestVideoFormat method doesn't work, you could force the resolution in the
// following instructions (called few lines belows): 'panelVideoPreview.Size=' and '_job.OutputFormat.VideoProfile.Size='
// to be the one you choosed (640, 480).
//xyz
_deviceSource.PickBestVideoFormat(new Size(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height), 15);
}
// Get the properties of the device video
SourceProperties sp = _deviceSource.SourcePropertiesSnapshot();
// Resize the preview panel to match the video device resolution set
panelVideoPreview.Size = new Size(sp.Size.Width, sp.Size.Height);
// Setup the output video resolution file as the preview
_job.OutputFormat.VideoProfile.Size = new Size(sp.Size.Width, sp.Size.Height);
// Display the video device properties set
toolStripStatusLabel1.Text = sp.Size.Width.ToString() + "x" + sp.Size.Height.ToString() + " " + sp.FrameRate.ToString() + " fps";
// Sets preview window to winform panel hosted by xaml window
_deviceSource.PreviewWindow = new PreviewWindow(new HandleRef(panelVideoPreview, panelVideoPreview.Handle));
// Make this source the active one
_job.ActivateSource(_deviceSource);
btnStartStopRecording.Enabled = true;
btnGrabImage.Enabled = true;
toolStripStatusLabel1.Text = "Preview activated";
}
else
{
// Gives error message as no audio and/or video devices found
MessageBox.Show("No Video/Audio capture devices have been found.", "Warning");
toolStripStatusLabel1.Text = "No Video/Audio capture devices have been found.";
}
}
