Hi,
the log indicates that the failure is happening when SharpCap has requested the IAMCameraControl interface from the directshow driver. It looks like the IAMCameraControl interface is found, but there is a failure trying to wrap the result as a managed object so that the C# code in SharpCap can talk to it. This failure is occurring inside code from the .NET core libraries, so it's difficult to track down the exact causes.
Code: Select all
Error 10:39:43.480498 #1 Failed to initialize camera controls. : Exception of type 'ArgumentException' : 参数错误。 (0x80070057 (E_INVALIDARG))
Stack Trace: at object System.StubHelpers.InterfaceMarshaler.ConvertToManaged(ref IntPtr ppUnk, IntPtr itfMT, IntPtr classMT, int flags)
Do other directshow cameras work correctly for you? That would imply that there is something odd about the drivers for that particular camera that are causing the problem.
I did have a look at the source code for the point in the .NET core libraries where the failure happens (
https://github.com/dotnet/runtime/blob/ ... .cpp#L4062) , but it is not obvious from the code what could cause the 'E_INVALIDARG' error at that point.
At a guess, I'd say that something subtle isn't quite right with either the way that the Directshow driver implements the necessary COM objects and interfaces, or something not quite right with the registration of the COM objects in the DirectShow driver DLL is causing this issue. This is more instinct than deduction though.
sorry not to be able to give any more help,
Robin
