public static List <DeckLinkDisplayModeDescription> GetDisplayDescriptions(IDeckLinkInput deckLinkInput, List <_BMDPixelFormat> pixelFormats,
_BMDVideoConnection connection = _BMDVideoConnection.bmdVideoConnectionHDMI,
_BMDSupportedVideoModeFlags videoModeFlags = _BMDSupportedVideoModeFlags.bmdSupportedVideoModeDefault)
{
List <DeckLinkDisplayModeDescription> displayDescriptions = new List <DeckLinkDisplayModeDescription>();
IDeckLinkDisplayModeIterator iterator = null;
try
{
deckLinkInput.GetDisplayModeIterator(out iterator);
while (true)
{
IDeckLinkDisplayMode displayMode = null;
try
{
iterator.Next(out displayMode);
if (displayMode == null)
{
break;
}
var displayModeId = displayMode.GetDisplayMode();
displayMode.GetName(out string displayName);
displayMode.GetFrameRate(out long frameDuration, out long timeScale);
var fps = (double)timeScale / frameDuration;
int width = displayMode.GetWidth();
int height = displayMode.GetHeight();
var resolution = width + "x" + height;
var displayModeFlags = displayMode.GetFlags();
var fieldDominance = displayMode.GetFieldDominance();
foreach (var pixFmt in pixelFormats)
{
deckLinkInput.DoesSupportVideoMode(connection, displayModeId, pixFmt, videoModeFlags, out int supported);
if (supported != 0)
{
displayDescriptions.Add(new DeckLinkDisplayModeDescription
{
ModeId = (long)displayModeId,
Width = width,
Height = height,
Fps = fps,
PixFmt = (long)pixFmt,
Description = displayName + " (" + resolution + " " + fps.ToString("0.##") + " fps " + GetFourCCStr(pixFmt) + ")",
});
}
else
{
//Console.WriteLine("Display mode not supported: "+ displayModeId + " " + pixFmt);
}
}
}
finally
{
if (displayMode != null)
{
Marshal.ReleaseComObject(displayMode);
displayMode = null;
}
}
}
}
finally
{
if (iterator != null)
{
Marshal.ReleaseComObject(iterator);
iterator = null;
}
}
return(displayDescriptions);
}