if I have more than one camera attached to my PC ... I want to know the best available resolutions for a specific camera ...
for example some cameras are HD or FullHD (1,280×720 pixels (720p) or 1,920×1,080 pixels (1080i/1080p)) or the most common are web cameras....
I want to know at least the best video mode that the camera work properly...(the mode that the camera made to work with)
my work is on WPF using C# (I am using Directshow)
thanks in advance
This is a code that I wrote, its working perfectly for me
public static List<Point> GetAllAvailableResolution(DsDevice vidDev)
{
try
{
int hr;
int max = 0;
int bitCount = 0;
IBaseFilter sourceFilter = null;
var m_FilterGraph2 = new FilterGraph() as IFilterGraph2;
hr = m_FilterGraph2.AddSourceFilterForMoniker(vidDev.Mon, null, vidDev.Name, out sourceFilter);
var pRaw2 = DsFindPin.ByCategory(sourceFilter, PinCategory.Capture, 0);
var AvailableResolutions = new List<Point>();
VideoInfoHeader v = new VideoInfoHeader();
IEnumMediaTypes mediaTypeEnum;
hr = pRaw2.EnumMediaTypes(out mediaTypeEnum);
AMMediaType[] mediaTypes = new AMMediaType[1];
IntPtr fetched = IntPtr.Zero;
hr = mediaTypeEnum.Next(1, mediaTypes, fetched);
while (fetched != null && mediaTypes[0] != null)
{
Marshal.PtrToStructure(mediaTypes[0].formatPtr, v);
if (v.BmiHeader.Size != 0 && v.BmiHeader.BitCount != 0)
{
if (v.BmiHeader.BitCount > bitCount)
{
AvailableResolutions.Clear();
max = 0;
bitCount = v.BmiHeader.BitCount;
}
AvailableResolutions.Add(new Point(v.BmiHeader.Width, v.BmiHeader.Height));
if (v.BmiHeader.Width > max || v.BmiHeader.Height > max)
max = (Math.Max(v.BmiHeader.Width, v.BmiHeader.Height));
}
hr = mediaTypeEnum.Next(1, mediaTypes, fetched);
}
return AvailableResolutions;
}
catch (Exception ex)
{
Log(ex);
return new List<Point>();
}
}
(E.g. this can be added to VideoCaptureElement in WPF-MediaKit)