Groups > microsoft.public.development.device.drivers > #1

Problem in Windows Biometric Framework driver

Newsgroups	microsoft.public.development.device.drivers
Date	2015-08-14 01:54 -0700
Message-ID	<92a4dcc7-4e1b-4368-a40b-e28223a275eb@googlegroups.com> (permalink)
Subject	Problem in Windows Biometric Framework driver
From	Shrini <shrinivasnh@gmail.com>

Show all headers | View raw

Hi
I am an newbie so pardon my knowledge.
I am currently developing Windows UMDF driver for one of my client. As mentioned in the documentation I am using the sample UMDF provided. My client requires us to write the Sensor, Engine as well as Storage. But I am currently using Storage driver of Microsoft only
Issues I am facing are as below
1. I load the driver and it looks good in the device manager
2. From application I call WinBioOpenSession. As soon as I execute this function I see lots of messages from my Driver.cpp as well as sensor adapter dll
I see that the WBF starts calling SensorAdapterStartCapture in which I am calling IOCTL to OnCapture( I return some constants in the structure for time being)and then WBS calls SensorAdapterFinishCapture in which I do return the RejectDetail as =0. But now again the SensorAdapterStartCapture  and SensorAdapterFinishCapture are  called . This goes on continuously, which I believe is some issues from my sensor and driver calls
Can someone please help me resolve the issue. Kind of stuck in this for 3 days now

Thanks in advance
Shrini

Back to microsoft.public.development.device.drivers | Next — Next in thread | Find similar

Thread

Problem in Windows Biometric Framework driver Shrini <shrinivasnh@gmail.com> - 2015-08-14 01:54 -0700
  Re: Problem in Windows Biometric Framework driver Shrini <shrinivasnh@gmail.com> - 2015-08-14 05:49 -0700

csiph-web