// Collect supported video and snapshot sizes
private void EnumeratedSupportedFrameSizes( VideoCaptureDevice videoDevice )
{
this.Cursor = Cursors.WaitCursor;
videoResolutionsCombo.Items.Clear( );
snapshotResolutionsCombo.Items.Clear( );
videoInputsCombo.Items.Clear( );
videoCapabilitiesDictionary.Clear( );
snapshotCapabilitiesDictionary.Clear( );
try
{
// collect video capabilities
VideoCapabilities[] videoCapabilities = videoDevice.VideoCapabilities;
int videoResolutionIndex = 0;
foreach ( VideoCapabilities capabilty in videoCapabilities )
{
string item = string.Format(
"{0} x {1}", capabilty.FrameSize.Width, capabilty.FrameSize.Height );
if ( !videoResolutionsCombo.Items.Contains( item ) )
{
if ( captureSize == capabilty.FrameSize )
{
videoResolutionIndex = videoResolutionsCombo.Items.Count;
}
videoResolutionsCombo.Items.Add( item );
}
if ( !videoCapabilitiesDictionary.ContainsKey( item ) )
{
videoCapabilitiesDictionary.Add( item, capabilty );
}
}
if ( videoCapabilities.Length == 0 )
{
videoResolutionsCombo.Items.Add( "Не поддерживается" );
}
videoResolutionsCombo.SelectedIndex = videoResolutionIndex;
if ( configureSnapshots )
{
// collect snapshot capabilities
VideoCapabilities[] snapshotCapabilities = videoDevice.SnapshotCapabilities;
int snapshotResolutionIndex = 0;
foreach ( VideoCapabilities capabilty in snapshotCapabilities )
{
string item = string.Format(
"{0} x {1}", capabilty.FrameSize.Width, capabilty.FrameSize.Height );
if ( !snapshotResolutionsCombo.Items.Contains( item ) )
{
if ( snapshotSize == capabilty.FrameSize )
{
snapshotResolutionIndex = snapshotResolutionsCombo.Items.Count;
}
snapshotResolutionsCombo.Items.Add( item );
snapshotCapabilitiesDictionary.Add( item, capabilty );
}
}
if ( snapshotCapabilities.Length == 0 )
{
snapshotResolutionsCombo.Items.Add( "Не поддерживается" );
}
snapshotResolutionsCombo.SelectedIndex = snapshotResolutionIndex;
}
// get video inputs
availableVideoInputs = videoDevice.AvailableCrossbarVideoInputs;
int videoInputIndex = 0;
foreach ( VideoInput input in availableVideoInputs )
{
string item = string.Format( "{0}: {1}", input.Index, input.Type );
if ( ( input.Index == videoInput.Index ) && ( input.Type == videoInput.Type ) )
{
videoInputIndex = videoInputsCombo.Items.Count;
}
videoInputsCombo.Items.Add( item );
}
if ( availableVideoInputs.Length == 0 )
{
videoInputsCombo.Items.Add( "Не поддерживается" );
}
videoInputsCombo.SelectedIndex = videoInputIndex;
}
finally
{
this.Cursor = Cursors.Default;
}
}
// Constructor
public Grabber( VideoCaptureDevice parent, bool snapshotMode )
{
this.parent = parent;
this.snapshotMode = snapshotMode;
}
// New video device is selected
private void devicesCombo_SelectedIndexChanged( object sender, EventArgs e )
{
if ( videoDevices.Count != 0 )
{
videoDevice = new VideoCaptureDevice( videoDevices[devicesCombo.SelectedIndex].MonikerString );
EnumeratedSupportedFrameSizes( videoDevice );
}
}
