public bool Selected {get; set;}
true to either select the video format or to indicate that the video format is currently selected; false otherwise.
If the format is currently selected, changing its selection state will have no effect. One format must be selected at any time.
using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public bool _result = false;
public void VideoFormatExample()
{
// reference the capture control
CaptureCtrl capturectrl = _form.CaptureCtrl;
int count, compression = 0, bits = 0, width = 0, height = 0;
int found, selected = -1;
// set a video device, use the name of your device here
if (capturectrl.VideoDevices["USB"] != null)
capturectrl.VideoDevices["USB"].Selected = true;
// reference the videoformats property
VideoFormats videoformats = capturectrl.VideoCaptureFormats;
try
{
// get count of available video formats
count = videoformats.Count;
// enumerate formats and select one
foreach (VideoFormat vf in videoformats)
{
// get the properties
bits = vf.BitCount;
compression = vf.Compression;
width = vf.Width;
height = vf.Height;
// select the format if it matches some criteria
if (bits == 16 && width == 640 && height == 480)
{
vf.Selected = true;
break;
}
}
// get the currently selected format
selected = videoformats.Selection;
// find a format based on subtype name, width and height (YUY2 320 x 240 video)
found = videoformats.IndexOf(Constants.MEDIASUBTYPE_YUY2, 320, 240);
// our found format is not selected, so select it
if (found != selected)
videoformats.Selection = found;
// get the new selected format
selected = videoformats.Selection;
// set our result based on what we expect
_result = (count > 0 && selected == found);
}
catch (Exception)
{
_result = false;
}
}
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