// Ok button clicked
private void okButton_Click(object sender, EventArgs e)
{
videoDeviceMoniker = videoDevice.Source;
// set video size
if (videoCapabilitiesDictionary.Count != 0)
{
VideoCapabilities caps = videoCapabilitiesDictionary[(string)videoResolutionsCombo.SelectedItem];
videoDevice.VideoResolution = caps;
captureSize = caps.FrameSize;
}
if (configureSnapshots)
{
// set snapshots size
if (snapshotCapabilitiesDictionary.Count != 0)
{
VideoCapabilities caps = snapshotCapabilitiesDictionary[(string)snapshotResolutionsCombo.SelectedItem];
videoDevice.ProvideSnapshots = true;
videoDevice.SnapshotResolution = caps;
snapshotSize = caps.FrameSize;
}
}
if (availableVideoInputs.Length != 0)
{
videoInput = availableVideoInputs[videoInputsCombo.SelectedIndex];
videoDevice.CrossbarVideoInput = videoInput;
}
}
/// <summary>
/// Check if two video capabilities are equal.
/// </summary>
///
/// <param name="vc2">Second video capability to compare with.</param>
///
/// <returns>Returns true if both video capabilities are equal or false otherwise.</returns>
///
public bool Equals(VideoCapabilities vc2)
{
if ((object)vc2 == null)
{
return(false);
}
return((FrameSize == vc2.FrameSize) && (BitCount == vc2.BitCount) && (MediaType == vc2.MediaType) && (MinimumFrameRate == vc2.MinimumFrameRate) && (MaximumFrameRate == vc2.MaximumFrameRate));
}
// Retrieve capabilities of a video device
static internal VideoCapabilities[] FromStreamConfig(IAMStreamConfig videoStreamConfig)
{
if (videoStreamConfig == null)
{
throw new ArgumentNullException("videoStreamConfig");
}
// ensure this device reports capabilities
int count, size;
int hr = videoStreamConfig.GetNumberOfCapabilities(out count, out size);
if (hr != 0)
{
Marshal.ThrowExceptionForHR(hr);
}
if (count <= 0)
{
throw new NotSupportedException("This video device does not report capabilities.");
}
if (size > Marshal.SizeOf(typeof(VideoStreamConfigCaps)))
{
throw new NotSupportedException("Unable to retrieve video device capabilities. This video device requires a larger VideoStreamConfigCaps structure.");
}
// group capabilities with similar parameters
Dictionary <int, VideoCapabilities> videocapsList = new Dictionary <int, VideoCapabilities>();
for (int i = 0; i < count; i++)
{
try
{
VideoCapabilities vc = new VideoCapabilities(videoStreamConfig, i);
videocapsList.Add(i, vc);
/*
* ulong key = (((ulong)vc.MaximumFrameRate) << 48) |
* (((ulong)vc.MaximumFrameRate) << 48) |
* (((ulong)vc.FrameSize.Height) << 32) |
* (((ulong)vc.FrameSize.Width) << 16);
* if ( !videocapsList.ContainsKey( key ) )
* {
* videocapsList.Add(key, vc);
* }
* else
* {
* if ( vc.BitCount > videocapsList[key].BitCount )
* {
* videocapsList[key] = vc;
* }
* }
*/
}
catch
{
}
}
VideoCapabilities[] videocaps = new VideoCapabilities[videocapsList.Count];
videocapsList.Values.CopyTo(videocaps, 0);
return(videocaps);
}