/// <summary>
/// Finds all the available video resolutions that match the aspect ratio of the preview stream
/// Note: This should also be done with photos as well. This same method can be modified for photos
/// by changing the MediaStreamType from VideoPreview to Photo.
/// </summary>
private void MatchPreviewAspectRatio()
{
// Query all properties of the device
IEnumerable <StreamResolution> allVideoProperties = _previewer.MediaCapture.VideoDeviceController.GetAvailableMediaStreamProperties(MediaStreamType.VideoRecord).Select(x => new StreamResolution(x));
// Query the current preview settings
StreamResolution previewProperties = new StreamResolution(_previewer.MediaCapture.VideoDeviceController.GetMediaStreamProperties(MediaStreamType.VideoPreview));
// Get all formats that have the same-ish aspect ratio as the preview, and find the highest resolution one
// Allow for some tolerance in the aspect ratio comparison
const double ASPECT_RATIO_TOLERANCE = 0.015;
var matchingFormats = allVideoProperties.Where(x => Math.Abs(x.AspectRatio - previewProperties.AspectRatio) < ASPECT_RATIO_TOLERANCE);
// Order them by resolution then frame rate
allVideoProperties = matchingFormats.OrderByDescending(x => x.Height * x.Width).ThenByDescending(x => x.FrameRate);
// Clear out old entries and populate the video combo box with new matching entries
VideoSettings.Items.Clear();
foreach (var property in allVideoProperties)
{
ComboBoxItem comboBoxItem = new ComboBoxItem();
comboBoxItem.Content = property.GetFriendlyName();
comboBoxItem.Tag = property;
VideoSettings.Items.Add(comboBoxItem);
}
VideoSettings.SelectedIndex = -1;
}
/// <summary>
/// Finds all the available video resolutions that match the aspect ratio of the preview stream
/// Note: This should also be done with photos as well. This same method can be modified for photos
/// by changing the MediaStreamType from VideoPreview to Photo.
/// </summary>
private void MatchPreviewAspectRatio()
{
// Query all properties of the device
IEnumerable<StreamResolution> allVideoProperties = _previewer.MediaCapture.VideoDeviceController.GetAvailableMediaStreamProperties(MediaStreamType.VideoRecord).Select(x => new StreamResolution(x));
// Query the current preview settings
StreamResolution previewProperties = new StreamResolution(_previewer.MediaCapture.VideoDeviceController.GetMediaStreamProperties(MediaStreamType.VideoPreview));
// Get all formats that have the same-ish aspect ratio as the preview
// Allow for some tolerance in the aspect ratio comparison
const double ASPECT_RATIO_TOLERANCE = 0.015;
var matchingFormats = allVideoProperties.Where(x => Math.Abs(x.AspectRatio - previewProperties.AspectRatio) < ASPECT_RATIO_TOLERANCE);
// Order them by resolution then frame rate
allVideoProperties = matchingFormats.OrderByDescending(x => x.Height * x.Width).ThenByDescending(x => x.FrameRate);
// Clear out old entries and populate the video combo box with new matching entries
VideoSettings.Items.Clear();
foreach (var property in allVideoProperties)
{
ComboBoxItem comboBoxItem = new ComboBoxItem();
comboBoxItem.Content = property.GetFriendlyName();
comboBoxItem.Tag = property;
VideoSettings.Items.Add(comboBoxItem);
}
VideoSettings.SelectedIndex = -1;
}