USB 2.0 Video Capture Driver Development

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- Previous
  - 1
    - Strange behaviour for TDI_SET_EVENT_HANDLER in a filter Hi I have a TDI filter and I'm filtering TDI_SET_EVENT_HANDLER. Application can send this IRP to "reset" a previously event handler. What I don't understand is, why when someone above me tries to reset a previously set event handler, it's already NULL in my filter? if( pSrc->EventHandler ) { // Hook The Caller's Event Handler ......... } else { // Reset the Event Handler // Printing EventHandler and EventContext now, will show they are NULLed !! // Why pDest->EventHandler and pDest->EventContext are ALREADY = NULL? (Before I put my null in it) pDest->EventHandler = NULL; pDest->EventContext = NULL; } Thanks. Tag: USB 2.0 Video Capture Driver Development Tag: 77080
  - 2
    - Getting section filename Dear all, Is it possible to retrieve the full file path of a file that is backing a section? The only documented API I can find that does anything close is CcGetFileObjectFromSectionPtrs. Anyone know of a way to do this? Many thanks in advance! Carly Tag: USB 2.0 Video Capture Driver Development Tag: 77079
  - 3
    - Renaming ndisuio Hi, I'm totally new to NDIS and drivers in general. I need to create my own NDIS protocol driver. To begin with it can have the exact same functionality as ndisuio, so here is what I've done: (1) Copied ndisuio source tree and renamed it (2) In the sources I renamed protName, NT_DEVICE_NAME and DOS_DEVICE_NAME (3) Chose a different name for the target sys file (4) Built the driver - it build successfully I also copied ndisuio.inf file, made some renaming in there, but unfortunately the driver doesn't install. I believe the problem is in the INF file but I don't know how to fix it. Is there any reference/sample that explains exactly how to create the inf file? Regards, Osnat Tag: USB 2.0 Video Capture Driver Development Tag: 77075
  - 4
    - IRP_MJ_CREATE will only be called once Dear all, I am modifying a File System Driver written by others. I find that the dispatch route of IRP_MJ_CREATE will only be called when I first access a file. After I close the file and reopens the same file again, the dispatch route will not be executed. Do anybody have any idea why? Is it about cache? Steve Tag: USB 2.0 Video Capture Driver Development Tag: 77074
  - 5
    - ExecMethod returns error 0x80041008 >From my c++ application i want ot call the a driver method . Method has a parameter as array. Followed the Example, Creating an Array of Embedded Objects http://msdn.microsoft.com/library/default.asp?url=/library/en-us/smss... To pass array of objects to WMI. Put is successful but ExecMEthod fails on win2003 system. Has anyone have any idea what can be wrong? Thanks Tag: USB 2.0 Video Capture Driver Development Tag: 77067
  - 6
    - Cypress FX2 device driver & loopback speed Hi , I am using Cypress FX2 USB controller in out High speed USB device. I am performing bulk loop-back operation (same as per sample from Cypress) I am transfering total data for 1 MB using 512 bytes at a time. That gives ~1955 packets. I observed that ~ 150 times ReadFile or WriteFile from application takes 16 millisecond to complete transfer of 512 bytes, which seems long to me. this 16 millisecond response costs my overall speed to go down as low as 10 Mbits/second or so. I want to achieve atleast 90 to 110 Mbits per second speed. Is this because of bulk transfer? Can this be fixed? or I need to fine tune things somewhere? Thanks, David Tag: USB 2.0 Video Capture Driver Development Tag: 77063
  - 7
    - Loking for source code Hello, I am looking for application layer source code that issues standard device requests of USB 2.0 like Get Desriptor, Set Address and Set Configuration. If anybody can point me to some pointers that would be great. Thanks, Tag: USB 2.0 Video Capture Driver Development Tag: 77057
  - 8
    - Question on delay/latency in USB driver again! Hi experts out there, I am currently writing a lower filter for USB audio. I need to find out the delay time of the audio data transfering between the ADC (i.e. connected to mic) and lower filter. Is there any way to find out that?? Many thanks in advance. aze2cool Tag: USB 2.0 Video Capture Driver Development Tag: 77056
  - 9
    - Fetch bits of printed data I am using oemuni sample of win DDK to develop a virtual printer driver. Please any of you can suggest me the procedure to get the raw bits being send to printer. I tried out with FilterGraphics callback function but its not working for all scenarios. Tag: USB 2.0 Video Capture Driver Development Tag: 77053
  - 10
    - Enable Devices Hi, I am trying to programmatically control Enable/Diable devices and am using some code I found using the Setup API. When using the function below, I am able to enable a CDROM device only if I used the same code to disable it. If I disable the CDROM using the Windows Device Manager GUI, enabling it with the function does not work. the call: ok = SetupDiCallClassInstaller(DIF_PROPERTYCHANGE, HwDevInfo, DeviceInfoData) returns true, but the device remains in disabled state. If anyone has some experience from this, I would appreciate a code review to see if there are any obvious errors Thanks Niclas Private Shared Function changeDeviceState(ByVal HwDevInfo As IntPtr, ByVal DeviceInfoData As SP_DEVINFO_DATA, ByVal state As System.UInt32) As Boolean Dim propertyChangeParams As SP_PROPCHANGE_PARAMS = New SP_PROPCHANGE_PARAMS propertyChangeParams.ClassInstallHeader.cbSize = Marshal.SizeOf(GetType(SP_CLASSINSTALL_HEADER)) propertyChangeParams.ClassInstallHeader.InstallFunction = Convert.ToUInt32(DIF_PROPERTYCHANGE) propertyChangeParams.StateChange = state propertyChangeParams.Scope = Convert.ToUInt32(DICS_FLAG_GLOBAL) Dim propertyChangeParamsSize As Integer = Marshal.SizeOf(propertyChangeParams) Dim PSP_PROPCHANGE_PARAMS As IntPtr = Marshal.AllocHGlobal(propertyChangeParamsSize) Marshal.StructureToPtr(propertyChangeParams, PSP_PROPCHANGE_PARAMS, True) Dim ok As Boolean = SetupDiSetClassInstallParamsA(HwDevInfo, DeviceInfoData, PSP_PROPCHANGE_PARAMS, System.Convert.ToUInt32(propertyChangeParamsSize)) If ok Then ok = SetupDiCallClassInstaller(DIF_PROPERTYCHANGE, HwDevInfo, DeviceInfoData) If (Not ok) Then Dim errorCode As Integer = Marshal.GetLastWin32Error() Console.WriteLine("Error (" & errorCode.ToString() & ") + SetupDiSetClassInstaller") Return False End If Else Dim errorCode As Integer = Marshal.GetLastWin32Error() Console.WriteLine("Error (" & errorCode.ToString() & ") + SetupDiSetClassInstallParams") Return False End If Return True End Function Tag: USB 2.0 Video Capture Driver Development Tag: 77052
  - 11
    - How can I use MMX instructions on amd64 processors? An error message showed up when I was compiling an .asm file with MMX instructions in it? However, the same test file could pass the compile if I used an early version (8.00.2207) of ml64. The version that refuses my test file is 8.00.40310.39 coming with DDK 3790.1830. Have anyone ever seen this message and knows how to fix it? The command line to compile my test file: ml64 /c test.asm The error message I got: error A2222: x87 and MMX instructions disallowed; legacy FP state not saved in Win64 The test file is as simple as the following: .code _Start: movd rax, mm0 END _Start Tag: USB 2.0 Video Capture Driver Development Tag: 77051
  - 12
    - A problem when linking in VC I define a new function which is GetDeviceInterfaceSymbolicLinkNew(). When I link it in VC, it appears those faults : " --------------------Configuration: Test - Win32 Debug-------------------- Linking... Test.obj : error LNK2001: unresolved external symbol "int __cdecl GetDeviceInterfaceSymbolicLinkNew(void *,struct _GUID const *,unsigned long,char * const)" (?GetDeviceInterfaceSymbolicLinkNew@@YAHPAXPBU_GUID@@KQAD@Z) Debug/Test.exe : fatal error LNK1120: 1 unresolved externals Error executing link.exe. Test.exe - 2 error(s), 0 warning(s) " I want to use this function in user mode. I don't know if it could work. Please give me some hints. Thanks. Bob Tag: USB 2.0 Video Capture Driver Development Tag: 77049
  - 13
    - Co-installer fails(SetupDiGetSelectedDriver(....) fails on WIN VISTA) Hi Guys, In my device co-installer, SetupDiGetSelectedDriver(...) fails with error code -536870397 on Windows VISTA. If any body has some idea, Please help. Any idea... Thanks Vivek Tag: USB 2.0 Video Capture Driver Development Tag: 77031
  - 14
    - SOFTWARE ENGINEER/ WINDOWS/ CAREER POSITION/ CA OMNI GROUP 419-537-9447 tgugger@sbcglobal.net SOFTWARE ENGINEER/ CAREER POSITION/ CA This is an excellent position with a major company (real company- non consulting) located in the greater Fremont, California area. Full benefits and very good working Conditions from the start, and exceptional advancement opportunities in the future are offered by our client. SOFTWARE ENGINEER:. Our client develops dynamic signal analyzer, data acquisition and shaker control systems. These systems are used in a large cross section of industries, including the disk drive industry, consumer electronics, automotive, aerospace, etc. Our products require state of-the-art real-time .NET, C++, C# development in support of sophisticated electronics equipment. Excellence in the following skills desired: C++, multitasking, .NET, COM, low level support for USB (and possibly video) device drivers. Qualified candidates will have real-time control system/instrument design/implementation. In addition they will be capable of developing high speed interfaces to manipulate and display large volumes of floating point information. Expertise with high-speed interfaces to local and network based databases is also desired. Individuals with ability to make highly user-convenient interfaces to USB based components (device drivers) with a strong ability to eliminate user perceptible delays in interaction are also important. Training Experience: MSEE/MSCS required for candidates with less experience. BSEE/BSCS (minimum) for those candidates with more experience If interested and qualified answer the ten questions below. All skills not required, but a majority are for consideration. Email answers WITH a current resume that reflects the needed skills to:tgugger@sbcglobal.net. 1.. Software Engineer experience ----------------yrs 2.. C++ experience ----------------------------------yrs 3.. .Net experience ----------------------------------yrs 4.. High Speed interface experience --------------yrs 5.. Real Time experience ---------------------------yrs 6.. USB experience ----------------------------------yrs 7.. C# experience ------------------------------------yrs 8.. Citizenship Status -------------------------------- 9.. Availability --------------------------------------- 10.. Salary Requirement -----------------------------K + Benefits Tag: USB 2.0 Video Capture Driver Development Tag: 77026
  - 15
    - Problem Installing PrintProcessor from printer INF file. I developed a print processor and have manually installed and tested it. But I would like to have it installed via the printer INF file. I have followed the INF help in the DDK and added the following to my INF file PrintProcessor="MTP-22XXPP.DLL, MTP22XXPP.dll" along with source and destination locations of the dll. But when I 'Add Printer', select the INF file, and click 'Finish', files are copied then I get an error message, 'Printer driver not installed, operation could not be completed'. Reviewing the results, the print processor dll is copied to the appropriate directory MTP22XXPP.DLL = 51,prtprocs\w32x86 but the registry does not get updated. The same method is used for installing a language monitor, just different destination directory and INF statement, which seems to work. I have tried to install the printer INF file on several XP systems and a Win2K system and get the same results on all of them. Whether the print processor is previously installed or not. Any suggestions would be greatly appreciated, Thanks Dave K Tag: USB 2.0 Video Capture Driver Development Tag: 77022
  - 16
    - output queue length When I put my NIC card under load, I see the output queue length in perfmon go up and down. However when I stop the traffic, this count never goes to zero. Is this a problem? Tag: USB 2.0 Video Capture Driver Development Tag: 77018
  - 17
    - Creating Keyboardlayout in Windows Ce 4.2 We are using Platform Builder 4.2. We created il.cpp and dl.cpp files which were used kbdgen.exe tool. And then we created kbd..dll with EVC++4.0. We put this .dll file in to release directory and define the Layout File, Layout Text and PS2_AT values [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Layouts\0000041f] "Layout File"="Input Language DLL name goes here" "Layout Text"="Input Locale description goes here" "PS2_AT"="Device Layout DLL name goes here" HKEY_CURRENT_USER\Keyboard Layout\Preload\1] @="0000041f" then rebuild platform but unfortunately new keyboard was not recognized. What can I do? Thanks, Tolga Karalar ESIT Electronic TURKEY Tag: USB 2.0 Video Capture Driver Development Tag: 77016
  - 18
    - Creating Keyboardlayout in Windows Ce 4.2 We are using Platform Builder 4.2. We created il.cpp and dl.cpp files which were used kbdgen.exe tool. And then we created kbd..dll with EVC++4.0. We put this .dll file in to release directory and define the Layout File, Layout Text and PS2_AT values [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Layouts\0000041f] "Layout File"="Input Language DLL name goes here" "Layout Text"="Input Locale description goes here" "PS2_AT"="Device Layout DLL name goes here" HKEY_CURRENT_USER\Keyboard Layout\Preload\1] @="0000041f" then rebuild platform but unfortunately new keyboard was not recognized. What can I do? Thanks, Tolga Karalar ESIT Electronic TURKEY Tag: USB 2.0 Video Capture Driver Development Tag: 77015
  - 19
    - FILE_OBJECT filename Hello When my driver receives an IRP_MJ_WRITE, the irp points to a file object. This file object's FileName points to a filename. My driver hex-dumps this unicode string. However, sometimes when IRQL=2 a get a bug check D1h. So my question is: is this unicode string allocated in nonpaged or paged pool? Tag: USB 2.0 Video Capture Driver Development Tag: 77004
  - 20
    - Print Data Dear all, I need to capture the print data and also print the data sent to a network printer. The data is text and no bitmaps or image. I am able to capture the data using the oemui sample given DDK. How do I send the same data to the network printer ? Thanks Manoj Tag: USB 2.0 Video Capture Driver Development Tag: 76999
  - 21
    - test test Tag: USB 2.0 Video Capture Driver Development Tag: 76998
  - 22
    - Printer driver packaging Hello, I have a question and i hope somebody will be able to help. I need information on how to package and distribute a printer driver to be conform to the "Designed for Windows" signature. Thanks. Tag: USB 2.0 Video Capture Driver Development Tag: 76997
  - 23
    - NDIS SendComplete- Please help! Hi, My NDIS miniport driver is always crashing under heavy load when SendComplete is being called. What does SendComplete do? NDIS called SendPackets() Within SendPackets, I call transmit which tries to post packets to the hardware. If I cant, I call SendComplete wth STATUS_PENDING and throw the pkt onto a queue, otherwise I call SendComplete with STATUS_SUCCESS. What am I missing here? Please help! Tag: USB 2.0 Video Capture Driver Development Tag: 76977
  - 24
    - SSL, Kernel, and NDIS Is there any way to implement SSL in the NDIS IM Driver? I think there is, but I'm not sure as to the first way to go about this. -Jay (patelj27b at gmail dot com) Tag: USB 2.0 Video Capture Driver Development Tag: 76971
  - 25
    - NDISProt and NdisMediumWan Problems I've extended the sample NDISProt driver to support NdisMediumWan devices. I can bind to the NdisWanIp device and issue OID queries to it. However, the driver is not receiving any data from the device and all send packets issues from a host app (via an IOCTL interface to the driver) fail. All that I did was change MediumArray[2] = {NdisMedium802_3, NdisMediumWan}. Is there something else that I need to do to support read/writes to NdisWanIp? Thanks! Tag: USB 2.0 Video Capture Driver Development Tag: 76970
- Next
  - 1
    - help install driver and help drivequery.exe Hello, when I run driverquery.exe ( windows xp ) I can see that my driver ( for usb ) is Manuel and stopped. How is it possible to change in Running ? thanks Vincent Tag: USB 2.0 Video Capture Driver Development Tag: 76968
  - 2
    - How does KeWaitForMultipleObjects() handle multiple signaled objects? Hello, If KeWaitForMultipleObjects() waits (with WaitAny) for multiple objects and they get signaled more or less at the same time. Does KeWaitForMultipleObjects() return for each signaled object with STATUS_WAIT_*? Or does KeWaitForMultipleObjects() return once and I have to read the state of each object? Thanks! -- h.wulff Tag: USB 2.0 Video Capture Driver Development Tag: 76953
  - 3
    - NDIS PassThru IM Driver Using SSL and Certificates Hey There, Does anyone out there have any idea where to begin with this? I need to write an NDIS PassThru IM Driver that will also work as a VPN and take a packet sent to a specific server, "http://xxx" and change it to go through "https://xxx" and use SSL encryption. Any ideas as to where to begin with this? I don't see any useful information in the DDK or through google. -Jay (patelj27b at gmail dot com) Tag: USB 2.0 Video Capture Driver Development Tag: 76949
  - 4
    - crash in directx when usb hid device is connected Hi all, I have developed a USB HID device based on the PIC16c745 - it works great, but there is one small problem. When it is plugged in, most directx apps (eg. games and dxdiag) crash inside of dinput.dll. Other than this, the devices works great, I can control it via the HID interfaces in the DDK without any problems. When the crash happens the backtrace looks like this: http://www.heenan.me.uk/vs.png Without this USB device that I have developed connected everything works fine. I'm using the latest available version of directx (Feb 2006) on XP Pro. Same version on Server 2000 does not show the problem. I initially posted this into the programmer.directx.input group (see http://tinyurl.com/z5zkb) but they suggested I post here instead. Any help greatly appreciated. Thanks Joseph Tag: USB 2.0 Video Capture Driver Development Tag: 76948
  - 5
    - question for secondary dump data callback Hello. I have problems with my bugcheck secondary callback (WinXP SP2). My callback is indeed called, but there are two issues: a) My callback is called only once, and I cannot see my information in the kernel crash dump. I believe that the DDK mentions that my callback should be called twice: once for buffer length and address acquisition, and then again for actually copying the data. My callback code, which was adapted from an archive, is shown below after this letter. b) In some cases, when I tried the .enumtag command, I got a listing of information (my GUID was not there). However, sometimes I got the following error: 1: kd> .enumtag Unable to start enumeration, HRESULT 0x80004002 (E_NOINTERFACE, what does it mean here, and did I cause it?) Any ideas? thanks, Philip Lukidis bugcheck callback: // watch out, called at IRQL==HIGH_LEVEL VOID TestBugCheckSecondaryDumpDataCallback( IN KBUGCHECK_CALLBACK_REASON Reason, IN PKBUGCHECK_REASON_CALLBACK_RECORD Record, IN OUT PVOID ReasonSpecificData, IN ULONG ReasonSpecificDataLength ) { UNREFERENCED_PARAMETER(Reason); UNREFERENCED_PARAMETER(Record); PKBUGCHECK_SECONDARY_DUMP_DATA pData; pData = (PKBUGCHECK_SECONDARY_DUMP_DATA) ReasonSpecificData; if(pData && (ReasonSpecificDataLength==sizeof(KBUGCHECK_SECONDARY_DUMP_DATA))) { pData->Guid = TEST_CRASH_GUID; // this is for acquiring the address and buffer length if(pData->OutBuffer == NULL) { pData->OutBuffer = (PVOID)g_CRASH_STRING; pData->OutBufferLength = g_CrashLen; } // request to copy the data (we never get here, we're called only once!) if((pData->InBuffer == pData->OutBuffer) && pData->InBuffer) { if(g_CrashLen < pData->OutBufferLength) { RtlCopyMemory(pData->OutBuffer,g_CRASH_STRING,g_CrashLen); pData->OutBufferLength = g_CrashLen; } } } } Tag: USB 2.0 Video Capture Driver Development Tag: 76943
  - 6
    - Windows clipboard Hi, I wanted to know if the following is possible. When an application is copying some data to the clipboard, is it possible to hook into the clipboard so as to know the name of the source application that is copying the data to the clipboard. Also is it possible to get the name of the file from which the contents have been copied to the clipboard? Thanks in advance. Best Regards, Vishal Tag: USB 2.0 Video Capture Driver Development Tag: 76942
  - 7
    - RAID Cluster MAP to Physical LBA relationship Does anyone know of any tools which display the current mapping between clusters and physical LBAâ??s on an XP Pro (SP2) NTFS (three drives) Stripe set and is there any method of changing this? Maybe a description of how NTFS is implemented across a RAID array? I have a video application simulated by writing a 100MB file and reading the file back. The file is written to 3x SCSI disks, striped and formatted using NTFS (default cluster size of 4KB). The system is a 3.6GHz Xeon with 3.25GB RAM. The simulation creates multiple files (keeps going until the volume is full) and for each 100MB file calculates the average write transfer rate and read transfer rate. Most of the time, the write transfer rate is around 160MB/s but sometimes drops to 75MB/s (occasionally much less). For writes, a dip to 120MB/s for the real application could cause a loss of some real-time data. Concentrating on Writes: with the higher transfer speeds, each of the 3 drives in the Stripe get Write commands to the same LBA and (mainly) 64K transfers. The LBAs being written to are sequentially increasing. For the â??badâ?? scores a combination of things can happen. The LBAs being written to will increase sequentially and then the LBA range will change (usually lower physical area of the disks) and/or the transfer size will change to much less than 64K (I saw one transfer of 4K). The change of LBA range wouldnâ??t hurt things much, but the change in transfer size from 64K means much less efficient use of the SCSI bus (more commands, less data with each) and seems to be the root cause of the occasional performance dip. The issue does not appear to be anything to do with fragmentation â?? just the way in which the drives are being used by XP / NTFS Hence the question - Any good tools to look at how a files is going to be mapped physically on an NTFS Software RAIDed volume - Any method of tweaking? NOTE: This is the fisrt time I've used the forums so apologies if this is the wrong forum to be asking this question! Tag: USB 2.0 Video Capture Driver Development Tag: 76941
  - 8
    - 64 bit passthru driver noe getting installed Hi, I have built the 64 bit Amd64 passthru driver. The ddk used is 2003 SP1 ddk I am trying to install this on 64-bit XP SP1 on Intel Xeon 2.8Ghz. It never gets installed on pointing to passthru driver's inf. This is what the setupapi.log emits:- [2006/03/09 16:26:31 960.15924 Driver Install] #-198 Command line processed: C:\WINDOWS\Explorer.EXE #-166 Device install function: DIF_SELECTDEVICE. #-166 Device install function: DIF_SELECTDEVICE. #E157 Default installer failed. Error 0xe0000214: The specified path does not contain any applicable device INFs. What is the possible cause of this issue? -- Vipin Aravind http://www.explorewindows.com Tag: USB 2.0 Video Capture Driver Development Tag: 76938
  - 9
    - virtual drive driver and few problems Hello, I've problems with my driver(w2k, wxp) 1) formating virtual drive with fat32, i get error: system could not finish operation, but drive was successfully formated. NTFS works fine. 2) sometimes system sends strange ioctl 0x0066001b, what is this? Device type 66, command 06 ?? 3) my major trouble, i cannot share my virtual drive, When someone trying access to my shared virtual drive, gets error "Not enough server storage is available to process this command". Not all my machines show this error, sometimes works fine :( Does someone have solution for mounting readonly ntfs drives on w2k? Maybe exist a patch for that. -- Marcin Gabryszewski Tag: USB 2.0 Video Capture Driver Development Tag: 76936
  - 10
    - Linker error LNK2026 Hello, I am developing and maintaining a Windows 2000 driver. In order to keep my development environment and tools up to date, I just switched from Win 2003 Server DDK to Win 2003 Server DDK SP1. Since this change, when I want to rebuild my Windows 2000 driver (using W2K inc and libs of the DDK), I get the following error : wdm.lib(NTOSKRNL.EXE) : error LNK2026: module unsafe for SAFESEH image Does anyone experienced the same? Can someone tell me the way to get out of this problem? Thanks, Olivier Tag: USB 2.0 Video Capture Driver Development Tag: 76935
  - 11
    - Occasionally false samples from a soundcard driver A PCI bus based "professional" soundcard has a digital input (S/PDIF). Connected this input to a CD player's output and recorded about 20 seconds using waverecorder. Found 12 "clicks" in the recorded WAV file. The clicks are false sample values, exactly one false sample in each case (sample rate does not matter, same at 22kHz, 44.1kHz, 48 kHz, 96 kHz). Sample value is random (never full scale nor zero). Searched for the clicks and determined their sample number. 10 of them have a sample number ending with "1", 2 of them end with "2", so definitely *not random*. Calculated the difference between sample numbers ending with "1". Calculated the gcd (greatest common divisor) of these differences and found that it is always 440 (or multiples of 440, e.g. 880, 2200). Soundcard is a PCI busmaster, but has "Min_Gnt = 0" and "Max_Lat = 0". My questions: From the point of view of a device driver programmer do you have any idea what goes wrong here? What may the 440 stand for? Juergen Tag: USB 2.0 Video Capture Driver Development Tag: 76933
  - 12
    - KMDF CoInstaller problems I'm having a problem installing a KMDF HID filter driver. If I use the CoInstaller binary in the 5308 WDK I get an error "The specified resource type cannot be found in the image file". Setupact.log suggests that the resource WDFCAB_RESOURCE cannot be found. If I use the CoInstaller binary in the 5270 WDK I get an error "An internal certificate chaining error has occured". The setupact.log suggests that GetLatestInstalledVersion failed OpenFile with error 126 If I open the 5270 coinstaller in DevStudio and extract the cab resource, right-clicking on the inf and selecting Install. Then I can install my KMDF driver without any problems. The 5308 WDK coinstaller does not appear to have this resource, and is significantly smaller. -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ Tag: USB 2.0 Video Capture Driver Development Tag: 76932
  - 13
    - WZC reverting the ssid I am working on setting SSID on my wireless network card uisng winddk using ioctl commands. For setting ssid, the steps i am using 1. For open network Stop WZC Set InfrastructureMode Set Ndis802_11WEPDisabled Set SSID strat WZC its working fine 1. For secured network Stop WZC set Ndis802_11AuthModeOpen Set InfrastructureMode Set SSID Set Ndis802_11WEPEnabled Set ADD_WEP_KEY till here its fine it get connected starat WZC ---> WZC reverts back to other SSID. So starting WZC causing the issue.What can I do to avoid it. Avnish. its working fine Tag: USB 2.0 Video Capture Driver Development Tag: 76927
  - 14
    - How can I determine the size of one cluster? Hi, all How can I determine the size of one cluster in specified file system, such as FAT32 or NTFS? It is known that: the Default Cluster Sizes can be decided by volume size. for example(For NTFS): Volume Cluster 0 to 512 MB ----- 512 bytes 513 MB to 1 GB ----- 1 KB 1025 MB to 2 GB ----- 2 KB 2 GB and greater ----- 4 KB But how can I get this exact information from system (or some place on disk)? Thanks a lot! Tag: USB 2.0 Video Capture Driver Development Tag: 76922
  - 15
    - Returning order of CompletionRoutines() and IoCallDriver() Hi Let's say I'm a high level driver and i call IoCallDriver to pass an IRP down the stack, and the whole operation is synchronous. There are several devices in the stack (let's say A,B,C,D), each one of them has a completion routine (except D). After device D completes the irp, all completion routines for all the devices are being called, and only afterwards all the IoCallDriver() routines of all the devices return? (or if I'm wrong, what is the right order?) Thanks Tag: USB 2.0 Video Capture Driver Development Tag: 76916
  - 16
    - kernel vs user file name I need to read a file in a kernel mode driver. The file name is passed from a user mode application in the form of "C:\file" or \\Computer\Share\File. Is there a standard kernel or user mode API, or some document describing the proper algorithm to convert "C:\file" to "\??\C:\file" (or "\Device\...."), and "\\Computer\Share\File" to "\Device\Lanman..." (or whatever), in order to make a user mode file name usable in kernel mode? Thank you. Tag: USB 2.0 Video Capture Driver Development Tag: 76914
  - 17
    - to make memory read only Hello All, I writing a driver for windows 2k/xp/2k3. For debugging purpose I want to make a data structre read only. There is call MmProtectMdlSystemAddress to change it to read only but it is only supported from XP onward. Is there any way i can do it on windows 2000. Thanks Tag: USB 2.0 Video Capture Driver Development Tag: 76910
  - 18
    - IoCompleteRequest() from WorkItem Hi Lets say I'm in PASSIVE IRQL in a dispatch function. I mark my irp as pending. Later, I create a workitem that receives the irp as a context and do some work in it. In the end of the workitem's function, I complete the IRP. Back to the dispatch routine - after allocating and queuing the workitem, I return STATUS_PENDING. Now, because I'm in PASSIVE level, there can be a context switch from my dispatch routine to my workitem's function, so it will run and complete the irp, before I return STATUS_PENDING from the dispatch routine. (it means that when I return STATUS_PENDING, the irp is already completed!) Is there a problem with the above scenario? And if so, how should I handle it? Tag: USB 2.0 Video Capture Driver Development Tag: 76904
  - 19
    - Looking for information on USB mouse firmware Hi driver experts, I would like to learn how to write/modify/load USB mouse firmware. Any suggestions on books, support websites, forums? If this is not suitable for this site, can anyone direct me to suitable places for this kind of posts? Thanks in advance. Tag: USB 2.0 Video Capture Driver Development Tag: 76903
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    - WHQL tests not required for Windows XP home? Hi, To get our driver signed for Windows XP Pro and XP Home, do I need to run WHQL test for only XP Pro or both? The document seems to indicate that XP Home is not required. Is this true? Thanks, Ning Tag: USB 2.0 Video Capture Driver Development Tag: 76902
  - 21
    - Synchronizing the clock of few computers on a LAN Hi, I have about ten computers that needs to be synchronized such as the clock time on each computer is within about 20 ms from the others. There are soft real time applications distributed on the computers that needs to synchronized. Can the windows 2000 and XP w32time service achieve that? Any third party software? Any other way to synchrinize those applications? external devices? -- Thanks, Daniel Tag: USB 2.0 Video Capture Driver Development Tag: 76897
  - 22
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  - 23
    - UDF Filter Driver I have written a filter driver that sits inbetween the UDF and various dvd playback applications. In my filter I need to fail a read and get the application to stop playback. I am doing this by setting Data->IoStatus.Status = STATUS_DEVICE_IO_ERROR; Data->IoStatus.Information = 0; WinDvd interprets it correctly and cleanly stops playback. MediaPlayer (and some other players) start playing ugly static out of the speakers and the time counter keeps climbing eventhough it is no longer playing video. I have tried various other status codes but it doesn't seem to matter. It seems like they are not checking the return status... Any thoughts? -- Still trying to build a perpetual motion machine Tag: USB 2.0 Video Capture Driver Development Tag: 76887
  - 24
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  - 25
    - =?utf-8?B?SG93IHRvIGhvb2sgU1RSRVRDSEJMVCDvvIhwcmludGVyIGRyaXZlcu+8iQ==?= Dear All=EF=BC=8C I am writing a printer driver=EF=BC=8CI want to hook the STRETCHBLT function=EF=BC=8Cbut I can not get it work=E3=80=82 My codes section as below=EF=BC=8C ///////////////////////////////////////////////////// hSurf =3D EngCreateBitmap( sizeSurface, GetBmpDelta(Format, pPDEV- >ulHorzRes),Format,BMF_USERMEM|BMF_TOPDOWN, NULL) ; EngAssociateSurface( (HSURF)hSurf, pPDEV->hDev, HOOK_STRETCHBLT ) ; ////////////////////////////////////////////////////// BOOL WINAPI DrvStretchBlt( IN SURFOBJ *psoDest, IN SURFOBJ *psoSrc, IN SURFOBJ *psoMask, IN CLIPOBJ *pco, IN XLATEOBJ *pxlo, IN COLORADJUSTMENT *pca, IN POINTL *pptlHTOrg, IN RECTL *prclDest, IN RECTL *prclSrc, IN POINTL *pptlMask, IN ULONG iMode ) { MessageBox(NULL,L"DrvStretchBlt",L"printer driver",MB_OK); iMode =3D HALFTONE; return EngStretchBlt( psoDest, psoSrc, psoMask, pco, pxlo, pca, pptlHTOrg, prclDest, prclSrc, pptlMask, iMode ) ; } ///////////////////////////////////////////////////////// Anybody can give me some advice=EF=BC=8CThanks a lot=EF=BC=81 Best Regards=EF=BC=8C Black Tag: USB 2.0 Video Capture Driver Development Tag: 76879

Currently I'm developing a Driver for an existing USB 2.0 Device.

Because I'm progressing very slowly, I am looking for more samples
outside of the DDK. Especially samples for setting up isochronous transfers.

Thanks for your help

bye

Christopher Koschack

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Re: USB 2.0 Video Capture Driver Development by Tim

Tim
Wed Mar 15 01:04:36 CST 2006

Christopher Koschack <c.koschack@eu.theimagingsource.com> wrote:
>
>Currently I'm developing a Driver for an existing USB 2.0 Device.
>
>Because I'm progressing very slowly, I am looking for more samples
>outside of the DDK. Especially samples for setting up isochronous transfers.

What samples are you using? There are a number of isochronous samples in
the DDK, and there's not really much to an iso transfer, so I doubt that's
where your hard parts are.

Is this a USB camera? Did you look at the usbintel sample?
--
- Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc.

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