Device Drivers

IAudioMediaType in Vista APO
Hi, According to the Vista APO document, for IAudioProcessingObject::IsInputFormatSupported and IAudioProcessingObject::IsOutputFormatSupported, when the requested format is not supported, I can suggest a format to the audio services and return S_FALSE instead. I am able to define my suggested format in U... 26 Apr 2006 13:35

USB 2.0 Isochronous driver - high speed
I am Writing a USB Isochronous driver for my device. I am using the isousb example of ddk. what is the best possible performance that can be achieved by this sample. My objective is to acheive maximum data transfer rates. without making any chnages what best can be expected from this. I know I need to do lo... 21 Apr 2006 01:37

using !devext
i want to use !devext. my box is xp pro (no service pack). but it claims that "Your debugger is not using the correct symbols " what's pci!_PCI_DEVICE ? TIA !devnode 0 1 .... DevNode 0x81fa0298 for PDO 0x81fd8a60 InstancePath is "PCI\VEN_8086&DEV_24C3&SUBSYS_24C28086&REV_02\3&13c0b0c5&0&FB" State = Devi... 19 Apr 2006 00:51

USB controlling
Hi, I want to disable/enable the USB ports. So, that no one can can access that device connected with that port. I tried the CreateFile method with no SHARE rights & read/write access ... but it was not useful. Again, i found usbioctl.h header file with WINDDK there we have a flag defines like ... 12 Apr 2006 18:21

How to support Motion JPEG format in driver ?
Does intelcam.sys support Motion JPG format(ex:FCC_FORMAT_MJPG)? I can't find enough information in document. MJPG option is showed in Amcap but can not preview with MJPG format. KS_DATARANGE_VIDEO structure below Thanks for any help or hint. -SL ============================================================= ... 17 Apr 2006 01:25

STOP WZCSVC
Hi! I use NDISUIO to look for the SSID avaiable and setting them, but I must stop WZCSVC and I don't know how to do it. Can you illustrate me how to do it? Thanks Giulio ... 7 Apr 2006 05:18

SCSI Passthrough Using Write Buffer Command
Hi everyone, We are trying to send vendor-specific data to an ATAPI device we have designed, using the WRITE BUFFER command (SCSI op code 0x3B) through an application running under WIN 2000. The function uses the IOCTL_SCSI_PASS_THROUGH_DIRECT, just like the spti.c example in the MSDN library. The protocol is... 6 Apr 2006 18:00

Kernel mode to user mode communication
Hi, I am developing a mini filter using the Microsoft IFS kit. My mini filter communicates with a user mode service which contains certain business logic. I have written the user mode service as a Windows NT service. The communication is done using the standard api's like FltCreateCommunicationPort, Fil... 8 Apr 2006 14:33

APC_INDEX_MISMATCH
I met following error. It occurres only sometimes in calling DeviceIoControl() to my IM ndis driver with different control codes, not reproducable How can I to solve this problem ? APC_INDEX_MISMATCH (1) This is a kernel internal error which can occur only on a checked build. The most common reason to see suc... 3 Apr 2006 15:20

Trick serenum into detecting a device
Hi, is there any way to programmically trick serenum.sys to detect a (non-existing) device? For debugging purposes I want to simulate the connection of a plug-and-play serial device to a specific COM-port. Currently I'm using a second computer and a serial cable to transmit the faked PnP-ID. But is there a ... 24 Mar 2006 01:38