Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP

TheMSsForum.com: The Microsoft Software Forum

The MSS Forum ‹ Drivers
- Archive
  - Biz
  - MCSE
  - CRM
  - Drivers
  - Framework
  - ADO
  - ASP
  - Compact
  - Forms
  - Dotnet
  - C#
  - VB
  - FontpageGen
  - Excel
  - WorkSheet
  - Exchange
  - Setup
  - Fox
  - Fontpage
  - ASP
  - IIS
  - Entourage
  - Money
  - Messanger
  - PocketPC
  - Powerpoint
  - Project
  - Publisher
  - Excel
  - VB
  - Security
  - Portal
  - Services
  - SQLServerDev
  - SVCS
  - SQLServer
  - VB
  - VC
  - MFC
  - ExcelGen

- Previous
  - 1
    - writing on Base Address Registers hi, how does a typical driver writes address on pci bus, i mean if i'm targeting the address 01h then could it be, 00000001h (32-bit AD bus in pCI). Thx. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72417
  - 2
    - Problem! Either memory or IO locations are accessed in Win2K WDM driver Hi All, We written a WDM driver for 16 bit PCMCIA PC card in Win2k.We are able to read only either Memory or IO locations.We defined one IO resource,one INTR and Two Memory ( attribute and common) resources in INF file using LogConfigOverride section as shown below. PCCARD.NT.LogConfigOverride] LogConfig = Override0 [Override0] ConfigPriority = NORMAL IOConfig = 21@300-3FF%FDF ; IRQConfig = 3,4,5,7,9,10,11,12,15 ; IRQ MemConfig = 1000@0-FFFFFFFF%FFFFF000 ; Attribute Memory Descriptor MemConfig = 4000@0-FFFFFFFF%FFFFC000 ; Common Memory Descriptor PCCardConfig = 1:0:0(AC M XM0) ; ConfigIndex In device manager our device properties window If I use automatic settings, we are able to read/write Attribute and Common Memory. We are not able to access IO locations. And if I uncheck the "Use Automatic settings" , and select one of the IO resource from the "Settings base on" combo box which is not conflicted IO resource. In our case it ranges from 0x200 to 0x221. In CIS tuples I defined 0x200 as IO base and 0x21 as IO Range.If I set this only resource as current configuration. Then We are able to read/write IO locations. Since this manually selected Current configuration, there is no memory resource that's why memory is not accessible. In order to get the access to both memory and IO What should I do? Any mistake in INF file please correct me. Thanks in Advance. Mahender. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72415
  - 3
    - UniDriver Printer Driver with Plugins, adding device(custom) fonts at run-time via OEMQueryFont UniDriver Printer Driver with Plugins, adding device(custom) fonts at run-time via OEMQueryFont Basically, I need to be able to add "device fonts" at run-time WITHOUT having to specify the fonts in the GPD file. I can install device fonts at run-time, but am limited by the "DeviceFont" entry in the GPD file which is fixed upon printer driver installation. More details follow: I need to be able to add "fonts" via OEMQueryFont(-) at run-time (via "Printer Properties"); the fonts are constructed at "run-time" by user input. I cannot (do not want to) list all possible variations of the fonts in the GPD file or likewise specify "font files" for all of these variations. (Please note that the "monolithic" version of the printer driver functioned correctly.) The test to see whether a "device font" is installed is to go to MS Word and see the device font entry in the "Font" drop-down list. As for adding device fonts, apparently, OEMQueryFont(-) is called ONLY when there is an entry in the GPD file for device fonts (i.e. " *DeviceFonts: LIST(1,2) "). Furthermore, the function is called once for each entry in the list (i.e. in this case, once for "1", then for "2"). If only 2 device fonts are "created" at run-time, then everything works OK. However, if more than 2 device fonts are "created" at run-time, then NO device fonts appear to be installed (i.e. not seen in MS Word "Font" drop-down list. Any ideas? Thanks, Rudy Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72408
  - 4
    - More Printer driver debugging More confusion in debugging printer driver :( I am debugging the MSPLOT sample driver by placing OutputDebugString on the main exported functions to see which of these are being called, on adding the driver by the add printer wizard. Using WinDbg I am receving some output from DllMain and DrvQueryDriver but after that all output stop (not because these are the only functions called, it has to build the propertysheets so wheres the output from those functions), even if I output to a trace file. Whats strange is that I am recieving some error msgs from DrvDeviceCapabilities but without recieving the debug str that i wrote to inform me that it entered the function. I think it could be because 1. The driver fell to Kernel Mode at somepoint 2. The driver created some other process outside the spooler and all msgs are falling 3. The spooler process doesnÂ´t give me the rights to see the messages or doesnÂ´t allow the driver to send messages or write to files! What do you people think? Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72404
  - 5
    - Symantec Ghost 10.0 on XP SP2 w/WinDbg In the past I've used DriveImage and later Symantec Ghost to image disks on machines used for debugging particularly invasive, or particularly unstable driver projects. Setting up a new Dell PowerEdge 1800 dual Xeon box, I installed XP SP2 and connected it via a serial cable to another box running Windows Server 2003 (which I don't think is relevant but I've been wrong before). The basic setup worked as expected. However, attempting to use the latest Ghost 10.0 from Symantec was no picnic and I'm wondering if anyone here can explain the problems that I'm seeing. Install attempt #1: As a matter of course, I typically always boot the target box with all debugging options enabled in the boot.ini file and connect to it with WinDbg regardless of if I'm debugging a driver project or not. So I thought nothing of running the Ghost 10.0 installer on this setup. However, this generated first-chance exceptions that halted execution landing me at the WinDbg command prompt. Although somewhat atypical for production code, I thought nothing of it and figured that the exception would be handled. Possibly it was. But the Ghost installer reported "setup was interrupted - no files or settings have been modified". Well that's not true at all but it's off topic. Install attempt #2: Rebooted without the debugger, installed Ghost w/o obvious error and performed an initial backup of the test target's single SATA drive. Maybe this was just some installation problem? I tried rebooting back into the debugger with Ghost installed only to be hammered with exceptions in WinDbg. According to the Symantec support pages Symantec products aren't compatible with kernel-mode debuggers. The following two articles on the Symantec website provide an insufficient amount of detail to be of any use whatsoever. Kernel debuggers and debug output viewers are incompatible with Symantec programs http://tinyurl.com/ddoor Compatibility with kernel debugger programs http://tinyurl.com/dlyfj What's the conventional wisdom these days for imaging disks on hosts that (a) must be run routinely under WinDbg (b) are likely to suffer such abuse that they become unbootable and require restore from backup image in order to efficiently re-esablish the controls required for valid testing of kernel drivers? sysresccd.org sure looks nice but it doesn't seem to support SATA drives yet. Anyone have a suggestion for getting Ghost working, a way to use sysresccd on a SATA drive, or suggestion for another utility? - Thanks in advance and regards Chris Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72393
  - 6
    - Jungo windriver i use jungo windriver to debug my hardware, i only know how to access registers through I/O base address, and only in the DriverWizard. But today i need to acess registers through Memory BAR, given to me the offset of each registers. Thx. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72390
  - 7
    - AVStream & USB Hi All, I want to adding USB to Avstream but i have some confuse about USB's FDO,PDO and AVstream's KSDEVICE Device relationship who can give me a explain? Thanks You Help! Eric Lu Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72386
  - 8
    - usbvideo.sys verbose output? I'm having trouble getting any debug output from the usbvideo.sys driver. I have a Windows XP SP2 machine, with a partially checked build installed (usbvideo.sys and usbport.sys are checked builds). It is connected via firewire to another XP machine. WinDbg connects in kernel mode. I do not get much in the way of debug output. What's the next step to get verbose output? I'm developing a USB Video Class compliant device. Thanks! Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72385
  - 9
    - CD/DVD player is saying no disc! I can burn cd's but I put in a blank DVD and it's telling me to insert a disc? I have uninstalled my driver and then scan for new changes and it still won't recognize...please help i am using XP pro and i believe my burner is sony Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72384
  - 10
    - Autoplay Radio device? I am trying to build an USB FM receiver. The USB device have a preset frequency programmed into the microcontroller. My ultimate goal is to have the device plug in and start playing the radio station PC with no drivers or software installation. I am stumped on the best way. I have considered a mass storage device with player software in the flash memory. Is there a better way? I would think Audio Class would be good. Can a Audio device automatically send data to the sound card (or speakers) with out special drivers or software? Thanks much! Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72383
  - 11
    - Problem on 64 bit processor I have ndis IM driver - tested on w2k+sp4,w2k3+sp1,wxp+sp2 on 32 processors. All is ok. When I install this driver on w2k+sp4 on 64 bit processor (Intel EM64T) driver crashes, no blue screen appears and system restarts without blue screen. Question: When I want to use ndis IM driver on 32 windows systems installed on 64 bit processors - do I need to add some defines, or does need my driver code some adjustments for running on 64 bit processor ? (not 64 bit windows, only on 64 bit processor) Peter Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72358
  - 12
    - DDK linkage problem... Though the file "cfgmgr32.lib" is added to link modules, the following code written in Visual C++ 6.0 generates the linkage error: What is the possible cause of this error? #include "stdafx.h" #include <windows.h> #include <wtypes.h> #include <cfgmgr32.h> int main(int argc, char* argv[]) { CM_Request_Device_Eject(NULL,NULL,NULL,0,0); return(0); } Error LNK2001: unresolved external symbol __imp__CM_Request_Device_EjectA@20 Debug/c33.exe : fatal error LNK1120: 1 unresolved externals Error executing link.exe. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72356
  - 13
    - Question about PC Camera resolution Does DirextX support YUY2/RGB24 format at 1600x1200 resolution for PC Camera device? Or any constraint when declaring structure in WDM? If not, what is the max resolution? I can't find any useful information about this. Any help will be grateful. SL. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72355
  - 14
    - how to make monolithic printer driver XP visual style Is there any way to make monotlithic printer driver XP visual style (running on WinXP, of course) ? We checked the MSDN website, placed manifests everywhere in the driver DLLs but still no success. but placing manifest in App (EXE) does work. Thanks in advance. Edward Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72353
  - 15
    - About Clipboard in kernel mode Hi All. Sorry for my bad English. I have one question, how can i intercept(hook) clipboard in kernel mode? Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72352
  - 16
    - Loading a driver from a mapped drive fails The call StartService() fails when the driver is located in a shared network drive or have a network drive mapped to a drive letter. As an example, the DDK's sample exe for CANCEL and EVENT have this issue. I can run them OK within my local drive, but when I place them in a network shared drive (mapped to Z: drive), the call to StartService() returns ERROR_PATH_NOT_FOUND. I called QueryServiceStatusEx() and ControlService() with SERVICE_CONTROL_INTERROGATE, and dwCurrentState always shows ADS_SERVICE_STOPPED and not ADS_SERVICE_START_PENDING. Can anyone help? Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72347
  - 17
    - Debugging IRQL_NOT_LESS_OR_EQUAL Hello, I have a driver than runs on ksproxy for my hardware device. The driver works but I have intermittent issues on enable/disable of the driver which will generate the IRQL_NOT_LESS_OR_EQUAL exception and kill the machine. The driver was made with DriverStudio's tool derived from their KsDevice. I'm trying to track down whether it's something I've done (with bad use of spin locks perhaps) or if it's something in the DriverStudio framework. Has anyone had similar issues or have some suggestions for tools/techniques to nail down the issue. I'm using SoftIce as my debugger right now but the error doesn't happen in my functions, that I've been able to trap. It seems to happen (at least on enabling the driver) after I receive an IRP_MN_QUERY_DEVICE_RELATIONS which I don't handle directly. Thanks for any help! Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72341
  - 18
    - Access to hardware Hi I am starting to look into NDIS6.0 drivers. To gain a better understanding I think it would be good to build a driver for a NIC. I am not sure how to get my hands on the hardware that would help me. Any suggestions? Regards SR Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72335
  - 19
    - DDK EULA / using sample source in commercial projects Hi-- My employer has a DDK license. I'm not sure of the exact licensing details (e.g. which flavor if there are indeed flavors). We would like to include some code from the DDK in a utility we are developing. The project in the DDK is called DevCon. So: We'd like to include/use some source from DevCon for an installer we are writing. We don't want to actually use the DevCon utility executable. We just want to use some of the source code from the utility which will be compiled into a new utility that does other things beyond what DevCon does at the moment. But it is a commercial project and could be going on potentially tens of thousands of CDs. Can someone categorically say 'Yes, you can use code from the DevCon project for your own utility. Don't be stupid, that's what its there for.' Or can someone say 'No, you can't use code from DevCon in your own project because its not redistributable, can't you read?.' Or can someone point me in the direction of a more developer-friendly FAQ or some other resource that won't require a lawyer to understand (the EULA below is just plain confusing)? Or, if its a gray area, can someone tell me which department at Microsoft to contact? In the EULA it says: "You may also reproduce and distribute the Sample Code in object code form along with any modifications you make to the Sample Code, provided you comply with the Distribution Requirements described below." There is no section in the EULA titled 'Distribution Requirements', but there is a section called 'Redistribution Requirements'. In the redistribution requirements it says (amongst other things not applicable to a utility): "Contact Microsoft for the applicable royalties due and other licensing terms for all other uses and/or distribution of the Sample Code." Further, there is text on the page describing DevCon (http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q311272) which says: "DevCon is not redistributable. It is provided for use as a debugging and development tool. You can freely modify DevCon for *private* (my emphasis) use. The sample demonstrates how to use the SetupAPI and CfgMgr32 functions together effectively to enumerate devices and perform device operations." I'm not a a lawyer. And the EULA that comes with the DDK seems to be confusing if not inconsistent when viewed in light of other text that governs individual utilities included on the DDK. The EULA is below. Apolgies about the length. thanks in advance Alan ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ END-USER LICENSE AGREEMENT FOR THE MICROSOFT WINDOWS DRIVER DEVELOPMENT KIT IMPORTANT-READ CAREFULLY: This Microsoft End-User License Agreement ("EULA") is a legal agreement between you (either an individual or a single entity) and Microsoft Corporation for the Microsoft software product identified above, which includes computer software and may include associated media, printed materials, additional computer software applications, and "online" or electronic documentation ("SOFTWARE PRODUCT"). By downloading, installing, copying, or otherwise using the SOFTWARE PRODUCT, you agree to be bound by the terms of this EULA. If you do not agree to the terms of this EULA, do not install or use the SOFTWARE PRODUCT; you may however, return it to your place of purchase for a full refund. SOFTWARE PRODUCT LICENSE The SOFTWARE PRODUCT is protected by copyright laws and international copyright treaties, as well as other intellectual property laws and treaties. The SOFTWARE PRODUCT is licensed, not sold. 1. GRANT OF LICENSE. This EULA grants you the following rights: a. SOFTWARE PRODUCT. You may install and use five (5) copies of the SOFTWARE PRODUCT on computers, including workstations, terminals or other digital electronic devices ("COMPUTERS") to design, develop and test drivers ("Drivers") for use with Microsoft Windows Me, Microsoft Windows 2000 Professional, Microsoft Windows 2000 Server, Microsoft Windows 2000 Advanced Server, Microsoft Windows 2000 Datacenter Server, Microsoft Windows XP, and Microsoft Windows XP Service Pack 1 operating system products and any Microsoft operating system product that is a successor to any of the foregoing (each an "OS Product"). b. Sample Code. You may modify the sample source code ("Sample Code") to design, develop and test your Drivers for an applicable OS Product. You may also reproduce and distribute the Sample Code in object code form along with any modifications you make to the Sample Code, provided you comply with the Distribution Requirements described below. For purposes of this section, "modifications" shall mean enhancements to the functionality of the Sample Code. c. Redistribution Requirements. You may reproduce and distribute an unlimited number of copies of the Sample Code as described above in object code form, provided that: (i) you distribute the Sample Code only in conjunction with and as a part of your Drivers for the applicable OS Product; (ii) the Sample Code only operates in conjunction with an applicable OS Product identified in Section 1(a) above; (iii) you do not use Microsoft's name, logo, or trademarks to advertise, market or promote your Drivers for the applicable OS Product without the express written permission of Microsoft; (iv) you include a valid copyright notice on your Drivers for the applicable OS Product; (v) you agree to indemnify, hold harmless, and defend Microsoft from and against any claims or lawsuits, including attorney's fees, that arise or result from the use or distribution of your Drivers. Contact Microsoft for the applicable royalties due and other licensing terms for all other uses and/or distribution of the Sample Code. 2. DESCRIPTION OF OTHER RIGHTS AND LIMITATIONS. a. Limitations on Reverse Engineering, Decompilation, and Disassembly. You may not reverse engineer, decompile, or disassemble the SOFTWARE PRODUCT, except and only to the extent that such activity is expressly permitted by applicable law notwithstanding this limitation. b. Rental. You may not rent, lease, or lend the SOFTWARE PRODUCT. c. Support Services. Microsoft may provide you with support services related to the SOFTWARE PRODUCT ("Support Services"). Use of Support Services is governed by the Microsoft policies and programs described in the user manual, in "online" documentation, and/or in other Microsoft-provided materials. Any supplemental software code provided to you as part of the Support Services shall be considered part of the SOFTWARE PRODUCT and subject to the terms and conditions of this EULA. With respect to technical information you provide to Microsoft as part of the Support Services, Microsoft may use such information for its business purposes, including for product support and development. Microsoft will not utilize such technical information in a form that personally identifies you. d. Software Transfer. You may permanently transfer of all of your rights under this EULA, provided you retain no copies, you transfer all of the SOFTWARE PRODUCT (including all component parts, the media and printed materials, any upgrades, this EULA, and, if applicable, the Certificate of Authenticity), and the recipient agrees to the terms of this EULA. If the SOFTWARE PRODUCT is an upgrade, any transfer must include all prior versions of the SOFTWARE PRODUCT. e. Termination. Without prejudice to any other rights, Microsoft may terminate this EULA if you fail to comply with the terms and conditions of this EULA. In such event, you must destroy all copies of the SOFTWARE PRODUCT and all of its component parts. f. Publicly Available Software. Your license rights to the Sample Code are conditioned upon you (a) not incorporating Identified Software into, or combining Identified Software with, the Sample Code or a derivative work thereof; (b) not distributing Identified Software in conjunction with the Sample Code or a derivative work thereof; and (c) not using Identified Software in the development of a derivative work of the Sample Code. "Identified Software" means software which is licensed pursuant to terms that (i) create, or purport to create, obligations for Microsoft with respect to the Sample Code or derivative work thereof or (ii) grant, or purport to grant, to any third party any rights or immunities under Microsoft's intellectual property or proprietary rights in the Sample Code or derivative work thereof. Identified Software includes, without limitation, "Publicly Available Software". "Publicly Available Software" means any software that requires as a condition of use, modification and/or distribution of such software that such software or other software incorporated into, derived from or distributed with such software be (a) disclosed or distributed in source code form; (b) be licensed for the purpose of making derivative works; or (c) be redistributable at no charge. 3. INTELLECTUAL PROPERTY RIGHTS. All title and intellectual property rights in and to the SOFTWARE PRODUCT (including but not limited to any images, photographs, animations, video, audio, music, text and "applets" incorporated into the SOFTWARE PRODUCT), and any copies you are permitted to make herein are owned by Microsoft or its suppliers. All title and intellectual property rights in and to the content which may be accessed through use of the SOFTWARE PRODUCT is the property of the respective content owner and may be protected by applicable copyright or other intellectual property laws and treaties. This EULA grants you no rights to use such content. If this SOFTWARE PRODUCT contains documentation which is provided only in electronic form, you may print one copy of such electronic documentation. You may not copy the printed materials accompanying the SOFTWARE PRODUCT. 4. U.S. GOVERNMENT RESTRICTED RIGHTS. The SOFTWARE PRODUCT provided to the U.S. Government pursuant to solicitations issued on or after December 1, 1995 is provided with the commercial rights and restrictions described elsewhere herein. The SOFTWARE PRODUCT provided to the U.S. Government pursuant to solicitations issued prior to December 1, 1995 is provided with RESTRICTED RIGHTS as provided for in FAR, 48 CFR 52.227-14 (JUNE 1987) or FAR, 48 CFR 252.227-7013 (OCT 1988), as applicable. 5. EXPORT RESTRICTIONS. You acknowledge that the SOFTWARE PRODUCT is of U.S. origin. You agree to comply with all applicable international and national laws that apply to the SOFTWARE PRODUCT, including the U.S. Export Administration Regulations, as well as end-user, end-use and destination restrictions issued by U.S. and other governments. For additional information, see <http://www.microsoft.com/exporting/>. 6. DISCLAIMER OF WARRANTIES. To the maximum extent permitted by applicable law, Microsoft and its suppliers provide to you the SOFTWARE PRODUCT and Support Services AS IS AND WITH ALL FAULTS; and Microsoft and its suppliers hereby disclaim with respect to the SOFTWARE PRODUCT and Support Services all warranties and conditions, whether express, implied or statutory, including, but not limited to, any (if any) warranties, duties or conditions of or related to: merchantability, fitness for a particular purpose, lack of viruses, accuracy or completeness of responses, results, workmanlike effort and lack of negligence. ALSO THERE IS NO WARRANTY, DUTY OR CONDITION OF TITLE, QUIET ENJOYMENT, QUIET POSSESSION, CORRESPONDENCE TO DESCRIPTION OR NON-INFRINGEMENT. THE ENTIRE RISK ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE PRODUCT AND ANY SUPPORT SERVICES REMAINS WITH YOU. 7. EXCLUSION OF INCIDENTAL, CONSEQUENTIAL AND CERTAIN OTHER DAMAGES. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL MICROSOFT OR ITS SUPPLIERS BE LIABLE FOR ANY SPECIAL, INCIDENTAL, INDIRECT, PUNITIVE OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING, BUT NOT LIMITED TO, DAMAGES FOR: LOSS OF PROFITS, LOSS OF CONFIDENTIAL OR OTHER INFORMATION, BUSINESS INTERRUPTION, PERSONAL INJURY, LOSS OF PRIVACY, FAILURE TO MEET ANY DUTY (INCLUDING OF GOOD FAITH OR OF REASONABLE CARE), NEGLIGENCE, AND ANY OTHER PECUNIARY OR OTHER LOSS WHATSOEVER) ARISING OUT OF OR IN ANY WAY RELATED TO THE USE OF OR INABILITY TO USE THE SOFTWARE PRODUCT OR THE SUPPORT SERVICES, OR THE PROVISION OF OR FAILURE TO PROVIDE SUPPORT SERVICES, OR OTHERWISE UNDER OR IN CONNECTION WITH ANY PROVISION OF THIS EULA, EVEN IF MICROSOFT OR ANY SUPPLIER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 8. LIMITATION OF LIABILITY AND REMEDIES. Notwithstanding any damages that you might incur for any reason whatsoever (including, without limitation, all damages referenced above and all direct or general damages), the entire liability of Microsoft and any of its suppliers under any provision of this EULA and your exclusive remedy for all of the foregoing shall be limited to the greater of the amount actually paid by you for the SOFTWARE PRODUCT or U.S. $5.00. The foregoing limitations, exclusions and disclaimers shall apply to the maximum extent permitted by applicable law, even if any remedy fails its essential purpose. 9. APPLICABLE LAW. This EULA shall be construed and controlled by the laws of the State of Washington, and you consent to the jurisdiction and venue in the federal courts sitting in King County, Washington, unless no federal subject matter jurisdiction exists, in which case you consent to the jurisdiction and venue in the Superior Court of King County, Washington. You waive all defenses of lack of personal jurisdiction and forum non conveniens. Process may be served on either party in the manner authorized by applicable law or court rule. If either Microsoft or you employ attorneys to enforce any rights arising out of or relating to this EULA, the prevailing party shall be entitled to recover reasonable attorneys' fees. 10. ENTIRE AGREEMENT. This EULA (including any addendum or amendment to this EULA which is included with the SOFTWARE PRODUCT) is the entire agreement between you and Microsoft relating to the SOFTWARE PRODUCT and the Support Services (if any) and it supersedes all prior or contemporaneous oral or written communications, proposals and representations with respect to the SOFTWARE PRODUCT or any other subject matter covered by this EULA. To the extent the terms of any Microsoft policies or programs for Support Services conflict with the terms of this EULA, the terms of this EULA shall control. 11. QUESTIONS? Should you have any questions concerning this EULA, or if you desire to contact Microsoft for any reason, please contact the Microsoft subsidiary serving your country, or write: Microsoft DDK Development/One Microsoft Way/Redmond, WA 98052-6399. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72334
  - 20
    - step in-between printer (LPT) I need to develop some software that will step in between a computer and it's printer. The software should read from one LPT port (connected to printing computer) and then redirect that traffic out a second LPT port (connected to printer). It will do stuff to the data as it goes by. Can you give me any direction on what is needed to develop this? How do I read/write to/from the LPT port in Windows? Are there any libraries available that can manage the communications? Do I need to develop a driver to do this? Thanks! Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72324
  - 21
    - Alternative for Microsofts DDK... Hi, i dont have a MSDN Subscription and i dont have that much money to subscribe for the MSDN Package, but i am highly interested in developing Hardware Drivers, especially how this can be "mastered" on Windows Systems. So here comes my question: Is there a alternative DDK for the Microsoft NT based Systems, because i want to find out, how this works in "real-life" with my own drivers... Best would be a freeware or even open source solution... Best Regards Kerem Gümrükcü Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72317
  - 22
    - whql ndis driver Hi, I am looking to sign our NDIS vitual miniport driver signed under NDIS universal test. One of the requirement is that the driver be "free of OS specific kernel (ntoskrnl) calls". What function calls fall into this category? For example, IoCancelIrp(), IoBuildPartialMdl()?, IoCsqXXX()? thanks a lot, Ning Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72313
  - 23
    - TDI IOCTL code = 0 Hi all. I'm developing TDI filter driver, but I don't understand one thing. When I caught all IRPs going to TDI driver I often got for major function IRP_MJ_INTERNAL_DEVICE_CONTROL minor function with code 0. What does it mean? I have found that documented codes are only: #define TDI_ASSOCIATE_ADDRESS (0x01) #define TDI_DISASSOCIATE_ADDRESS (0x02) #define TDI_CONNECT (0x03) #define TDI_LISTEN (0x04) #define TDI_ACCEPT (0x05) #define TDI_DISCONNECT (0x06) #define TDI_SEND (0x07) #define TDI_RECEIVE (0x08) #define TDI_SEND_DATAGRAM (0x09) #define TDI_RECEIVE_DATAGRAM (0x0A) #define TDI_SET_EVENT_HANDLER (0x0B) #define TDI_QUERY_INFORMATION (0x0C) #define TDI_SET_INFORMATION (0x0D) #define TDI_ACTION (0x0E) #define TDI_DIRECT_SEND (0x27) #define TDI_DIRECT_SEND_DATAGRAM (0x29) (sorry for my english :) Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72312
  - 24
    - Modem Driver in Vista.Thank for help Vista Beta 2,detects my modem atomatically when I go to Device Manager. And then,when Vista wanted to install Modem Audio Device,in the copy proses,windows hanged and I had to restart windows. When I click connect to internet,it says "Dialing port" without hearing any sound from modem,while it had enabeld modem speaker.And after I canceld it and wanted to shutdown windows,it said : "Ending HiddenFax window" What does it mean?It's strange. Supplemental Driver Pack Installation wizard: Welcome to the Supplemental Driver Pack for Pre-Release Windows codenamed "Longhorn". This wizard will install drivers designed for Windows XP for display and networking devices on your computer that are not yet fully supported by Longhorn. Click Next to detect and install these drivers. Loading index file ... Finding devices ... Copying device drivers ... Windows did not need to install any additional drivers, or was not able to find compatible drivers for your system. If you experience driver difficulties, please visit the Longhorn Beta Program website. Finish. ------------------------ another Driver Package Installer,in the DVD of Vista Beta 2,in Driver folder : Driver Package Installer DPInst please wait while the drivers installs.This may take some time to complete. Suddenly after minutes,this message appear: Driver Package Installer stopped working and must be closed -------------- when updated driver fro mdevice manager : There was a problem installling this hardware: Creative VIBRA 128 An error accourd during the instalation of the device the software was tested for compliancewith Windows Logo requrtiments on a different version of windows,and may not be compatible with this version. ______________ Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72311
  - 25
    - USB selective suspend freeze Hello I'm writing usb function drivers. The usb device is a composite device with 4 interfaces. The device supports remote wake-up. 1 driver services 1 interface, another the 3 other interfaces. I'm running on WinXP SP 2. When the device is idle for 3 seconds, the drivers send down a idle request on each interface. After that, the callback routine of the idle request is called for each device. Each device sends down a wait wake irp and transitions to device power state D2. At this point, I can surprise-remove the device, I can disable the composite driver (to imitate safe removal), I can go to standby, I can hibernate, but I can't shut the system down. When the system goes to S5, something hangs in the USBD. I've tried to cancel the idle request in the power dispatch routine for "Set S5", but the IoCancelIrp() never returns. I've tried not to cancel, but then the usbd gets stuck when I abort a bulk out pipe. When I shut down without the device in selective suspend mode, everything is okay. What am I doing wrong ? Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72309
- Next
  - 1
    - multicast Will ping to multicast address work in Windows at all? Eg: ping 224.0.0.1 Will this fetch responses from hosts already joined to this group and in the same subnet. Though I see that I receive this multicast packet on my stack, there is a time out to this ping in the command prompt. thanks Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72305
  - 2
    - Printer driver install Hi there, I have build a small monolithic printer driver prototype for win2003 x86 and I am trying to install the driver via the add printer wizard but it is not installing and I am recieving a "Printer driver was not installed. Operation could not be completed" (not much info :(). Now I am trying to attach windbg to the spool process to see what is happening but windbg is not loading the symbol files and not recieving any of my debugging messages from the driver. I think that the driver is not being started at all, but then what could be causing error? I am stumpped, is there any body out there that can help me; what functions are loaded first by the spooler when installing and what could be the causes of such malfunction. Thanks in advance Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72304
  - 3
    - =?iso-8859-1?q?NdisIMInitializeDeviceInstance=ADEx_Not_Returning_(dead_lock)?= Hi, I have an IM driver that worked well untill now. I encounter a problem on 2-processors machine (windows 2003 sp 1) with 2 NICs teamed together with compaq teaming driver (cpqteam.sys). The problem is that when issuing "ipconfig /all", the IP configuration is empty. During debugging the OS startup, I noticed that my driver is waiting for the cpqteam to finish it's binding to specified NIC (inside NdisIMInitializeDeviceInstance=ADEx function), and that cpqteam driver is waiting to my driver to finish it's binding to the same NIC (again, inside NdisIMInitializeDeviceInstance=ADEx ). That is a dead lock. After waiting for a while, the 2 threads are killed and the binding process is failed. More info: In my driver, the MiniportInitalize function is called returns successfully. Any help whould be appreciated. Thanks, Ran. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72302
  - 4
    - Which type of driver should I develop to turn a file to a pesudo-d Hello, I am a beginner of driver development. I want to create a pesudo-disk from a normal file. Which type or types of driver should I develop? I think I am getting lost in the driver stack for a disk. Anyway, thank you for your idea in advance! Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72301
  - 5
    - Keyboard filter driver - obtaining keyboard indicator status Hi all, I am new to device driver development and am currently writing an upper filter driver for a USB keyboard. My first step I am trying is to obtain the LED information from the keyboard from a user-mode application. I have followed the Windows example (toaster filter) regarding creating a control device object in the upper filter driver and am able to obtain a handle to this control device object in the user-mode application. However, I then attempt to obtain the LED information as follows in the application: USBHandle = CreateFile("\\\\.\\KeyboardUSB", GENERIC_READ | GENERIC_WRITE, NULL, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); if (USBHandle != INVALID_HANDLE_VALUE) { status = DeviceIoControl(USBHandle, IOCTL_KEYBOARD_QUERY_INDICATORS, NULL, 0, &kbdParam, sizeof(kbdParam), &outLength, NULL); } In the filter driver, I receive the correct IRP (as below in my DispatchIO routine), but am unsure how to obtain and return the correct data. Below shows what I am currently attempting to do. irpStack = IoGetCurrentIrpStackLocation(Irp); switch (irpStack->MajorFunction) { case IRP_MJ_DEVICE_CONTROL: #ifdef DEBUG WriteLogFile("DispatchIo: IRP_MJ_DEVICE_CONTROL\r\n", 35); #endif switch (irpStack->Parameters.DeviceIoControl.IoControlCode) { case IOCTL_KEYBOARD_QUERY_INDICATORS: #ifdef DEBUG WriteLogFile("DispatchIo: IOCTL_KEYBOARD_QUERY_INDICATORS\r\n", 45); #endif return FilterPass(MainDeviceObject, Irp); break; default: break; } default: break; } Therefore, my main question is how to execute the IRPs correctly that are created from my application using DeviceIoControl. Do I need to use completion routines and if so, how should these be used? Thanks in advance, Kyzer Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72294
  - 6
    - How to post message to application Hi, I am writing application which shows some status of kernel driver on real time basis. I tried to achieve this by posting messages from kernel driver, but I could not find such API in DDK. Is there any way to post or send messages from kernel driver? Thanks Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72292
  - 7
    - USB client driver between Usbhub.sys and other client drivers. Greetings Experts! I hope some of you were written USB Client drivers for XP and 2000. I have to do the same - an USB client driver on top of Usbhub.sys. The only purpose of this driver is to implement vendor-specific request IOCTRL_ and talk to the Enpoint 0 of an USB device. The problem here is that in our system there are some other USB Client drivers like usbser.sys, blan.sys, some composite client drivers, etc. The driver I am to write should expose an additional interface in the Device Manager and co-exist with these client drivers. In my opinion I should place my 'vendor-specific' driver on top of Usbhub.sys and below another USB client drivers that we have. Please correct me if I am wrong. It seams that the problem here is how to place this driver properly in the driver stack... I will be very grateful if you can give me information, an advice or direct me to some DDK samples implementing a similar driver. Thanks in advance! Dim Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72291
  - 8
    - How to load NDIS driver for SDIO bus in Windows CE? I hope some one can help. I am trying to write a NDIS driver in windows CE. The driver interface is an SDIO bus. My first step was to write an SDIO stream driver to test that card. It's worked like magic. Second step was to try loading an NDIS driver for this card. According to Microsoft documentation I have to do the fallowing: 1. Write a dll that export "DriverEntry". 2. Add a key in the registry [HKEY_LOCAL_MACHINE \Comm \MYDRV] DisplayName="MYDRV NDIS Driver" Group ="NDIS" ImagePath="MYDRV.DLL" [Linkage] Route="MYDRV1" [HKEY_LOCAL_MACHINE \Comm \MYDRV1] DisplayName="MYDRV NDIS Driver" Group ="NDIS" ImagePath="MYDRV.DLL" [Parms] BusNumber=0 BusType=0 [HKEY_LOCAL_MACHINE\Drivers\SDCARD\ClientDrivers\Custom\MANF-02DF-CARDID-9103-FUNC-1] DLL="NDIS.DLL" Prefix= "NDS" Miniport=" MYDRV " As a resulted my DllMain was call twice one for load and one for unload. Can some one tell me what I am doing wrong? Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72286
  - 9
    - WinCE crash - HeapAlloc function Hi, I am working on a passthru driver for WinCE platform and recently (after updating the wlan.dll as there was some problem with the adhoc mode), it started crashing randomly. Some of the crashes are outside the modified passthru driver. I have attached few crash dumps below. I am not having any clue for the crash as it is happening randomly, sometimes after running the system for few minutes and sometimes after few hours. Any insight in this problem will be greatly appreciated or how can I go about debugging this problem. Thanks, -Niranjan Wireless Terminals Lab, Samsung Telecommunication America. CRASH 1: COREDLL!FindFreeItemInRegion(void * 0x00000000, region * 0x20302030, int 0x08d5ddf8) line 841 + 8 bytes COREDLL!FindFreeItem(void * 0x00000000, heap * 0x20302030, unsigned long 0x08d5ddf8, region * * 0x00000020) line 921 + 16 bytes COREDLL!Int_HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d5ddf8) line 1256 + 20 bytes LMEMDEBUG!HeapAllocTrace(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d5ddf8, unsigned long 0x00000020, char * 0x00000000) line 721 + 4 bytes LMEMDEBUG!HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d5ddf8) line 742 COREDLL!LocalAlloc(unsigned int 0x00000000, unsigned int 0x20302030) line 197 WZCSVC!MIDL_user_allocate(unsigned int 0x00000000) line 33 + 4 bytes LMEMDEBUG!HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d5ddf8) line 742 5a1fddc6() LMEMDEBUG!HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d5ddf8) line 742 WZCSVC!CE_QueryInterface(unsigned char * 0x00000000, unsigned long 0x20302030, unsigned long * 0x08d5ddf8) line 1751 + 12 bytes LMEMDEBUG!HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d5ddf8) line 742 NK! first chance exception in ndis.dll (0xC0000005: illegal instruction) **************************************************************************** *************************************************** CRASH 2: COREDLL!FindFreeItemInRegion(void * 0x00000000, region * 0x20302030, int 0x08d54e48) line 841 + 8 bytes COREDLL!FindFreeItem(void * 0x00000000, heap * 0x20302030, unsigned long 0x08d54e48, region * * 0x00000030) line 921 + 16 bytes COREDLL!Int_HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d54e48) line 1256 + 20 bytes LMEMDEBUG!HeapAllocTrace(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d54e48, unsigned long 0x00000030, char * 0x00000000) line 721 + 4 bytes LMEMDEBUG!HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d54e48) line 742 COREDLL!LocalAlloc(unsigned int 0x00000000, unsigned int 0x20302030) line 197 NDIS!NdisAllocateMemory(void * * 0x00000000, unsigned int 0x20302030, unsigned int 0x08d54e48, _LARGE_INTEGER {...}) line 165 LMEMDEBUG!HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d54e48) line 742 PASSTHRU!KNEWZ(int 0x0000005c) line 45 PASSTHRU!fast_timer_new(unsigned long * 0x00d54bfc, int 0x00000320, unsigned int 0x00000002, void (unsigned long, void *)* 0x010e958c marp_timer_callback(unsigned long, void *), void * 0x00d54bfc) line 108 + 8 bytes PASSTHRU!marp_timer_new(marp_timer * 0x00d54bfc, int 0x00000320, unsigned int 0x00000002, void (marp_timer *, void *)* 0x010e6a8c marp_rreq_record_cb(marp_timer *, void *), void * 0x00d54bf0) line 49 + 28 bytes PASSTHRU!marp_rreq_record_insert(unsigned char * 0x00d5331c, unsigned int 0x00000006) line 716 PASSTHRU!marp_rreq_process_start(marp_os_buf * 0x00d53e30, marp_rreq * 0x00d532d0) line 1218 PASSTHRU!marp_rreq_process(marp_os_buf * 0x00d53e30) line 331 + 12 bytes PASSTHRU!marp_process_packet(marp_os_buf * 0x00d53e30) line 347 PASSTHRU!marp_process_event() line 346 PASSTHRU!marp_thread() line 398 first chance exception in ndis.dll (0xC0000005: Access Violation) **************************************************************************** *********************************************************** CRASH 3: COREDLL!FindFreeItemInRegion(void * 0x00000000, region * 0x20302030, int 0x08beb3a8) line 841 + 8 bytes COREDLL!FindFreeItem(void * 0x00000000, heap * 0x20302030, unsigned long 0x08beb3a8, region * * 0x00000060) line 921 + 16 bytes COREDLL!Int_HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08beb3a8) line 1256 + 20 bytes LMEMDEBUG!HeapAllocTrace(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08beb3a8, unsigned long 0x00000060, char * 0x00000000) line 721 + 4 bytes LMEMDEBUG!HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08beb3a8) line 742 COREDLL!LocalAlloc(unsigned int 0x00000000, unsigned int 0x20302030) line 197 WZCSVC!MIDL_user_allocate(unsigned int 0x00000000) line 33 + 4 bytes LMEMDEBUG!HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08beb3a8) line 742 first chance exception in ndis.dll (0xC0000005: Access Violation) **************************************************************************** ************************************************** CRASH 4: COREDLL!FindFreeItemInRegion(void * 0x00000000, region * 0x20302030, int 0x08d4df58) line 841 + 8 bytes COREDLL!FindFreeItem(void * 0x00000000, heap * 0x20302030, unsigned long 0x08d4df58, region * * 0x00000020) line 921 + 16 bytes COREDLL!Int_HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d4df58) line 1256 + 20 bytes LMEMDEBUG!HeapAllocTrace(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d4df58, unsigned long 0x00000020, char * 0x00000000) line 721 + 4 bytes LMEMDEBUG!HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d4df58) line 742 COREDLL!LocalAlloc(unsigned int 0x00000000, unsigned int 0x20302030) line 197 NDIS!NdisAllocateMemory(void * * 0x00000000, unsigned int 0x20302030, unsigned int 0x08d4df58, _LARGE_INTEGER {...}) line 165 LMEMDEBUG!HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08d4df58) line 742 PASSTHRU!marp_copy_ndis_packet_add_marp_hdr(_NDIS_PACKET * 0x00bb01a4, _NDIS_PACKET * 0x00051afc, _BINDING * 0x00a9e3b0) line 277 + 20 bytes PASSTHRU!MiniportSendPackets(void * 0x00a9e3b0, _NDIS_PACKET * * 0x0862f7e8, unsigned int 0x00000001) line 335 NDIS!ndisMSendX(void * 0x00000000, _NDIS_PACKET * 0x20302030) first chance exception in ndis.dll (0xC0000005: Access Violation) **************************************************************************** ************************************************************ CRASH 5: COREDLL!FindFreeItemInRegion(void * 0x00000000, region * 0x20302030, int 0x08bc4ed8) line 841 + 8 bytes COREDLL!FindFreeItem(void * 0x00000000, heap * 0x20302030, unsigned long 0x08bc4ed8, region * * 0x00000020) line 921 + 16 bytes COREDLL!Int_HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08bc4ed8) line 1256 + 20 bytes LMEMDEBUG!HeapAllocTrace(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08bc4ed8, unsigned long 0x00000020, char * 0x00000000) line 721 + 4 bytes LMEMDEBUG!HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08bc4ed8) line 742 COREDLL!LocalAlloc(unsigned int 0x00000000, unsigned int 0x20302030) line 197 NDIS!NdisAllocateMemory(void * * 0x00000000, unsigned int 0x20302030, unsigned int 0x08bc4ed8, _LARGE_INTEGER {...}) line 165 LMEMDEBUG!HeapAlloc(void * 0x00000000, unsigned long 0x20302030, unsigned long 0x08bc4ed8) line 742 PASSTHRU!KNEWZ(int 0x0000000c) line 45 PASSTHRU!fast_timer_set(unsigned long 0x00bc8d00, int 0x00000802) line 233 + 8 bytes PASSTHRU!marp_timer_set(marp_timer * 0x00bbfff0, int 0x00000802) line 141 PASSTHRU!marp_neighbor_add(marp_os_buf * 0x00bcabb0, unsigned char * 0x00bcaae4, unsigned int 0x00000007) line 211 PASSTHRU!marp_hello_process(marp_os_buf * 0x00bcabb0) line 263 PASSTHRU!marp_rrep_process(marp_os_buf * 0x00bcabb0) line 279 PASSTHRU!marp_process_packet(marp_os_buf * 0x00bcabb0) line 353 PASSTHRU!marp_process_event() line 346 PASSTHRU!marp_thread() line 398 COREDLL!ThreadBaseFunc(void * 0x00000000, unsigned long 0x20302030) line 419 first chance exception in ndis.dll (0xC0000005: Access Violation) Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72277
  - 10
    - How to check a driver is digitally signed through code? Hello, How does the driverquery.exe obtain info on a driver if it is digitally signed? Any help would be appreciated. Thanks, ~ jiac Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72271
  - 11
    - How to check a driver is digitally signed through code? Hello, How does the driverquery.exe obtain info on a driver if it is digitally signed? Any help would be appreciated. Thanks, ~ jiac Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72270
  - 12
    - UniDrv Printer Driver with plugins, Need 'hPrinter' (handle) in function hrOEMDevicePropertySheets(-) UniDrv Printer Driver with plugins, Need 'hPrinter' (handle) in function hrOEMDevicePropertySheets(-) Modified WDK example printer "graphics and UI plugins". Cannot seem to find a way to get a valid "printer handle" function hrOEMDevicePropertySheets(-). Any ideas? -Rudy Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72265
  - 13
    - Bug check calling nt!RtlQueryEnvironmentVariable_U Hello, I am writing a minifilter driver that reads some configuration data from the registry in its DriverEntry procedure using RtlQueryRegistryValues. If I use REG_SZ values in the registry then everything works as expected. However if I use REG_EXPAND_SZ values the system bug checks when calling nt!RtlQueryEnvironmentVariable_U. The bug check is PAGE_FAULT_IN_NONPAGED_AREA (50) and it occurs right at the beginning of RtlQueryEnvironmentVariable_U. When I examine RtlQueryEnvironmentVariable_U in the debugger it looks like the procedure is paged out (the debugger just shows ?? for the diassembly). Details are at the end of the message. Can anyone tell me what's going on and how to fix the problem? I'm using the Windows XP SP2 checked build with the driver verifier enabled for my driver (same problem occurs with the free build without the driver verifier IIRC). Cheers, Chris My code: 696 UNICODE_STRING uTop, uBottom; 697 UNICODE_STRING uTopPath = { 0 }; 698 UNICODE_STRING uBottomPath = { 0 }; 699 PKEY_VALUE_PARTIAL_INFORMATION pkvpi; 700 RTL_QUERY_REGISTRY_TABLE QueryTable[3]; 701 PVOID TopBuffer = NULL; 702 PVOID BottomBuffer = NULL; 703 704 RtlZeroMemory( QueryTable, sizeof( QueryTable ) ); 705 706 QueryTable[0].Flags = RTL_QUERY_REGISTRY_REQUIRED | RTL_QUERY_REGISTRY_DIRECT; 707 QueryTable[0].Name = L"Top"; 708 QueryTable[0].EntryContext = &uTopPath; 709 QueryTable[1].Flags = RTL_QUERY_REGISTRY_REQUIRED | RTL_QUERY_REGISTRY_DIRECT; 710 QueryTable[1].Name = L"Bottom"; 711 QueryTable[1].EntryContext = &uBottomPath; 712 713 ASSERT( KeGetCurrentIrql( ) == PASSIVE_LEVEL ); 714 715 status = RtlQueryRegistryValues( RTL_REGISTRY_HANDLE, ( PCWSTR ) SubKeyHandle, QueryTable, NULL, NULL ); 716 if ( !NT_SUCCESS( status ) ) { 717 OVL_DBG_PRINT( OVLDBG_TRACE_ERRORS, 718 ( "Overlay!OverlayInitFromRegistry: RtlQueryRegistryValues failed %08x\n", status ) ); 719 } else { 720 OVL_DBG_PRINT( OVLDBG_TRACE_VERBOSE, 721 ( "Overlay!OverlayInitFromRegistry: uTopPath = \"%wZ\" uBottomPath = \"%wZ\"\n", &uTopPath, 722 &uBottomPath ) ); 723 status = OverlayAdd( &uBottomPath, &uTopPath ); 724 if ( !NT_SUCCESS( status ) ) 725 OVL_DBG_PRINT( OVLDBG_TRACE_ERRORS, ( "Overlay!OverlayInitFromRegistry: OverlayAdd failed %08x\n", status ) ); 726 727 RtlFreeUnicodeString( &uBottomPath ); 728 RtlFreeUnicodeString( &uTopPath ); 729 } (Some of the declared variables are unused.) Debugger output: ******************************************************************************* * * This is the string you add to your checkin description * Driver Verifier: Enabled for Overlay.sys on Build 2600 bvs3DuzH2lcqtHJHBbXCJD * ******************************************************************************* Overlay!DriverEntry: Entered Overlay!DriverEntry: Build Nov 18 2005 11:42:25 Overlay!OverlayInitFromRegistry: Entered Overlay!OverlayInitFromRegistry: RegistryPath = "\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Overlay" Overlay!OverlayInitFromRegistry: SubKeys = 1 *** Fatal System Error: 0x00000050 (0x80D463E6,0x00000000,0x80D463E6,0x00000000) Break instruction exception - code 80000003 (first chance) A fatal system error has occurred. Debugger entered on first try; Bugcheck callbacks have not been invoked. A fatal system error has occurred. Connected to Windows XP 2600 x86 compatible target, ptr64 FALSE Loading Kernel Symbols .................................................................................................. Loading unloaded module list ............ Loading User Symbols ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* Use !analyze -v to get detailed debugging information. BugCheck 50, {80d463e6, 0, 80d463e6, 0} Probably caused by : Overlay.sys ( Overlay!OverlayInitFromRegistry+314 ) Followup: MachineOwner --------- nt!RtlpBreakWithStatusInstruction: 80aba26c cc int 3 kd> !analyze -v ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* PAGE_FAULT_IN_NONPAGED_AREA (50) Invalid system memory was referenced. This cannot be protected by try-except, it must be protected by a Probe. Typically the address is just plain bad or it is pointing at freed memory. Arguments: Arg1: 80d463e6, memory referenced. Arg2: 00000000, value 0 = read operation, 1 = write operation. Arg3: 80d463e6, If non-zero, the instruction address which referenced the bad memory address. Arg4: 00000000, (reserved) Debugging Details: ------------------ OVERLAPPED_MODULE: rdbss READ_ADDRESS: 80d463e6 FAULTING_IP: nt!RtlQueryEnvironmentVariable_U+0 80d463e6 ?? ??? MM_INTERNAL_CODE: 0 DEFAULT_BUCKET_ID: DRIVER_FAULT BUGCHECK_STR: 0x50 LAST_CONTROL_TRANSFER: from 80bf3c51 to 80d463e6 TRAP_FRAME: f9744a10 -- (.trap fffffffff9744a10) ErrCode = 00000000 eax=f9744aa8 ebx=00000026 ecx=00000016 edx=00000000 esi=e12dd8b4 edi=e12dd8cc eip=80d463e6 esp=f9744a84 ebp=f9744ac0 iopl=0 nv up ei pl zr na po nc cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00000246 nt!RtlQueryEnvironmentVariable_U: 80d463e6 ?? ??? Resetting default scope STACK_TEXT: f9744a80 80bf3c51 00000000 f9744aa8 f9744aa0 nt!RtlQueryEnvironmentVariable_U f9744ac0 80bf44c4 00000000 00000082 f9744aec nt!RtlExpandEnvironmentStrings_U+0xed f9744b04 80bf4957 f9744b90 e12dd8b4 f9744b64 nt!RtlpCallQueryRegistryRoutine+0x2f4 f9744b68 f56b588e 00000000 00000084 00000001 nt!RtlQueryRegistryValues+0x2dd f9744c6c f56b64e3 ff984000 81d46610 f9744d58 Overlay!OverlayInitFromRegistry+0x314 [c:\winddk\5112\src\filesys\minifilter\overlay\overlay.c @ 715] f9744c7c 80b3368a 81d46610 ff984000 f597fce8 Overlay!DriverEntry+0x5d [c:\winddk\5112\src\filesys\minifilter\overlay\overlay.c @ 954] f9744d58 80b338ba 000004c0 00000001 00000000 nt!IopLoadDriver+0x6b6 f9744d80 80acbd9f 00000000 00000000 81dbc848 nt!IopLoadUnloadDriver+0x78 f9744dac 80bcb95a f597fce8 00000000 00000000 nt!ExpWorkerThread+0x10f f9744ddc 80adae82 80acbc90 80000001 00000000 nt!PspSystemThreadStartup+0x34 00000000 00000000 00000000 00000000 00000000 nt!KiThreadStartup+0x16 FAILED_INSTRUCTION_ADDRESS: nt!RtlQueryEnvironmentVariable_U+0 80d463e6 ?? ??? FOLLOWUP_IP: Overlay!OverlayInitFromRegistry+314 [c:\winddk\5112\src\filesys\minifilter\overlay\overlay.c @ 715] f56b588e 8bf0 mov esi,eax SYMBOL_STACK_INDEX: 4 FOLLOWUP_NAME: MachineOwner SYMBOL_NAME: Overlay!OverlayInitFromRegistry+314 MODULE_NAME: Overlay IMAGE_NAME: Overlay.sys DEBUG_FLR_IMAGE_TIMESTAMP: 437dbe21 STACK_COMMAND: .trap fffffffff9744a10 ; kb FAILURE_BUCKET_ID: 0x50_CODE_AV_BAD_IP_Overlay!OverlayInitFromRegistry+314 BUCKET_ID: 0x50_CODE_AV_BAD_IP_Overlay!OverlayInitFromRegistry+314 Followup: MachineOwner --------- Disassembly of nt!RtlQueryEnvironmentVariable_U: No prior disassembly possible nt!RtlQueryEnvironmentVariable_U: 80d463e6 ?? ??? 80d463e7 ?? ??? 80d463e8 ?? ??? 80d463e9 ?? ??? 80d463ea ?? ??? 80d463eb ?? ??? 80d463ec ?? ??? 80d463ed ?? ??? 80d463ee ?? ??? 80d463ef ?? ??? 80d463f0 ?? ??? 80d463f1 ?? ??? 80d463f2 ?? ??? 80d463f3 ?? ??? 80d463f4 ?? ??? 80d463f5 ?? ??? 80d463f6 ?? ??? 80d463f7 ?? ??? 80d463f8 ?? ??? 80d463f9 ?? ??? 80d463fa ?? ??? 80d463fb ?? ??? 80d463fc ?? ??? 80d463fd ?? ??? 80d463fe ?? ??? 80d463ff ?? ??? 80d46400 ?? ??? Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72258
  - 14
    - A question about gdi functions for a print processor. Hi I'm working on a printer driver. ours is Unidriver-based driver. I'm programming with the sample sources of a print processor that are in the Windows DDK. (\WINDDK\3790\src\print\genprint) The sample sources already implemented a few printing features such as n-up, reverse printing, etc... i want to make a feature of manual duplex with the sample sources, but i got a problem. As you know, the manual duplex feature is that the front data of pages for duplex is printed at first, and then the driver show a message box that inform of the user to put the printed matters on the multi-purpose tray. Finally, the back data of pages for duplex is printed. So, i refered to the sample code amd made a linked list that store a page information. i used Gdi functions for a print processor such as GdiStartDocEMF() and GdiEndDocEMF().... but.. I got a problem.. the problme is that after the front data of pages for duplex is sent to spooler, i called GdiEndDocEMF() function to eject all the front data of page from printer. At that time, unforunately.. the emf data is deleted from spooler. T_T although i called GdiStartDocEMF() to tranlate the back data of pages, the return of the function is failed,(the GetLastErr() is 62).. what function do the GdiEndDocEMF() replace to eject all data from printer? how can i implement the maunal duplex feature in a print processor?? if you know, plz... let me know how to do or what to do.... thanks. wany. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72255
  - 15
    - How to open this transport address Hi, I have tried to open raw ip in kernel mode "\device\rawip\255" or "\device\rawip\17" (UDP) or "\device\rawip\1" (ICMP), all is OK, I can to use it for sending packets. Problem is that I need to open raw ip for TCP. When I am trying to open transport address with device name for TCP: "\device\rawip\6" ZwCreateFile() returns 0xC000000D. I am trying it with the same way like for above successful attempts, I pass only different device name. What is different in opening address for TCP ? Must be set some different object attributes or something other ? Peter Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72253
  - 16
    - getting serial.sys to work for an ISA based 4xserial port card to work I have an ISA based card with 4 serial standard serial ports(16550 type) that share an IRQ (using a cpld) that I would like to use with windows 2K. As far as I can understand it, i can use the driver included with windows (serial.sys) and I need to write a wrapper of some kind and an INF file. Is this a correct assumption ? Are there any links to information that more or less outline the steps to do something like this ? (as i have no prior experience with developing kernel mode drivers on microsoft platforms.) I would just like to estimate the difficulty of this job first, it seems to me that it should be fairly simple. Thanks very much, Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72250
  - 17
    - multicast ping My network driver supports multicast. I have tested with multicast applications and it works fine. But when I issue ping 224.0.0.1 from command prompt, it doesnt reply to that though it has joined the group already through ndis oids. I have tried setting IGMPLevel to 2 in registry. Will this work at all? I am testing on Windows2003 server. Should I tune in additional parameters? thanks sophia Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72246
  - 18
    - Capturing USB port data How can we capture USB interface data in WindowsXP? I want to verify the data transfered across the device and machine. If anyone of you have any utility, pls let me know. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72242
  - 19
    - Page limit when using GDI to print Although this is a client side issue, I believe the real issue is a buffering limit in the printer driver. Since our Unidrv-based printer driver is the first driver Iâ??ve ever worked on, I am curious if I am diagnosing this problem correctly and if I understand all possible solutions. We are experiencing a page limit when using GDI printing. After printing 85 pages from our application, we get a failure. We raised our Unidrv-based printer memory limit to 2 GByte maximum and printing fails consistently on the 86th page. This happens whether we print to an external printer or to our Unidrv-based software PDF printer, i.e. a printer that creates a PDF document. When we print from our application using GDI printing, the return value for the EndPage function for the 86th page is 0cFFFFFFFF, i.e. -1, and GetLastError returns 0 (zero). We then call AbortDoc. If I modify the code to allow printing to continue, only the first 85 pages are printed. The same thing happens on an external printer. Note, we do not believe that any pages approach the 350 MByte limitation mentioned in the documentation. Also, if we delete pages at the beginning of the document, then the document will still print only 85 pages, i.e. some pages that previously didnâ??t print suddenly print. Is the only solution to reduce the color-depth the 24 bit color images ouor application produces, and of course, greatly reduce the size of the images for gray scale or black and white printing? Then Ican modify the device context to reduce the memory requirements for each page. Is there anything else I can do? If that is the solution, do printers typically use 16 bit color, 8 bit color, or something else? We do need to be able to print photographs to high quality printers, but the buik what our application deals with is black and white documents. If those documents contain a color photograph we do want to support printing that without such a small page limit. We've heard of customer documents that exceeded 4000 pages! (Granted, these are quite rare, but 1000 pages is no unheard of). Thanks in advance. P.S. Our printer driver is a Unidrv-based PDF printer driver, i.e. it produces PDF files. It was built using DDK 3790. We support Windows 2000 and Windows XP. It was developed using the Unidrv sample code provided in the DDK. The printer-generated PDF file is sent to an application we also have developed, i.e. there is no hardware printer. ------------------------------------------------------------------------- I posted the message above in the win32.programmer.gdi newsgroup in a post titled "Page limit when using GDI printing.", and I received the reply below from Rhett Gong [MSFT]: Note however, despite his reply, that this is NOT just a Unidrv issue. It happens when using GDI to print to other printers. I responded in that forum, and included the calculation that shows that 2 GBytes will handle 85 8.5 inch by 11 inch 300 DPI 24 bit color images. (2 to the power 31) / ( (300 DPI * 8.5 I) * ( 300 DPI * 11.0 I) * 24 bits/pixel) ) = 85.0 This is what makes me believe the page limit is related to buffering in the driver (or at least buffering somewhere). The issue is that printing doesn't start until EndDoc() is called. Is it reasonable to raise the driver buffering way above the virtual memory limit? Is this data all mapped to a file? I do not want to segement a 1000 page print job into multiple jobs as these arrive back asynchronously from the Unidrv printer and are loaded into our application. Having to append these over and over again would annoy most users. Note also, there are two separate issues. 1. GDI to other printers. 2. GDI to our Unidrv-based printer. A solution to either of these would be useful. Is this a fundamental limitation of GDI printing? (An answer to that would help me to stop pursuing something with no solution). ------------------------------------------------------------------------- Hello From your description, you write a Unidrv by yourself, but you can only print 86 pages and then EndPage return -1 and not further error code returned . Based on my understanding, this is a Printer Driver issue and require debugging into the printer driver to find out the problem, so I would suggest you post this question to following newsgroup: microsoft.public.development.device.drivers It is a managed newsgroup. and all DDK issues and driver dev questions are posted in the newsgroup above. The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who the newsgroups regularly can either share their knowledge or learn from your interaction with us. Also, this is to make sure that the responders can better track the problem. Thank you, Rhett Gong [MSFT] Microsoft Online Partner Support Get Secure! - www.microsoft.com/security http://support.microsoft.com/default.aspx?scid=/servicedesks/msdn/nospam.asp&SD=msdn This posting is provided "AS IS" with no warranties and confers no rights. -- You''''re unique, just like everyone else. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72236
  - 20
    - Synchronizing Timers and ISR I am attempting to synchronize Timer procedures with the ISR. When my timer expires it should perform operation A. If the ISR runs prior to that it will perform operation B and cancel the timer. What I am concerned about is the possiblity that the timer will expire, start executing, and get interrupted prior to reaching the Critical Section. In this scenario, Operation B will be performed by the ISR followed by Operation A by the timer. Is there a method to prevent this from happening? Thank you. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72229
  - 21
    - sqrt() cos() sin() in kernel mode Hello All, I need to perform some calculations in my driver, and I need to call some advanced math functions like sqrt(), cos() and sin()... I'd like to know if this is possible ? How to do that ? if these functions aren't available, can I call them from the user-mode ? Thanks for your help ! Eric. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72222
  - 22
    - Windows DDK Suite 3.0 hi,, all... i'm new here... i'm trying to make an application such as magictune of portrait displays... i plant a micro controller in the display.. that is configured i2c slave device.. connect pin 12, 15 of vga cable to the mcu.. i'm trying to send some simple data to the mcu... i'm using vc++ 6.0 i found that i need video.h from msdn.. so,, i got windows ddk suite 3.0 and installed it.. the header file, video.h is in C:\WINDDK\3790\inc\ddk\wxp and in vc++ 6.0,, tools -> options..., directories tab.. i put above directory in the list of "include files" section.. then i put // some header files #include <video.h> // some header files and tried to compile.. then i got 102 errors that all of them came from video.h and videoagp.h that are newly included headers.. did i do something wrong to configure building environment? is there some special thing to do in order to compile ddk headers? thank you very much... best regards, /u --------------- --------------------Configuration: VWCtrl - Win32 Debug-------------------- Compiling... VWCtrlDlg.cpp c:\winddk\3790\inc\ddk\wxp\videoagp.h(35) : error C2065: 'PAGP_RESERVE_PHYSICAL' : undeclared identifier c:\winddk\3790\inc\ddk\wxp\videoagp.h(35) : error C2100: illegal indirection c:\winddk\3790\inc\ddk\wxp\videoagp.h(35) : error C2501: 'PHYSICAL_ADDRESS' : missing storage-class or type specifiers c:\winddk\3790\inc\ddk\wxp\videoagp.h(35) : error C2143: syntax error : missing ';' before '(' c:\winddk\3790\inc\ddk\wxp\videoagp.h(36) : error C2226: syntax error : unexpected type 'PVOID' c:\winddk\3790\inc\ddk\wxp\videoagp.h(40) : error C2059: syntax error : ')' . . . c:\winddk\3790\inc\ddk\wxp\video.h(1500) : error C2146: syntax error : missing ';' before identifier 'InterfaceReference' c:\winddk\3790\inc\ddk\wxp\video.h(1500) : error C2501: 'PINTERFACE_REFERENCE' : missing storage-class or type specifiers c:\winddk\3790\inc\ddk\wxp\video.h(1500) : fatal error C1003: error count exceeds 100; stopping compilation Error executing cl.exe. VWCtrl.exe - 102 error(s), 0 warning(s) --------------- Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72220
  - 23
    - Correct DDK Windows 2000 SP4 I have Visual Studio 6, my O.S. is Windows 2000 SP4. According to the MSDN order site the correct DDK for my system is the Windows Server 2003 SP1 DDK, which I ordered. My main interest in the DDK was to obtain the Usbview,c source code, however Usbview.c will not compile on my system, it generates errors. I have been told by a systems developer that I need the 'Windows 2000 DDK' in order to compile Usbview.c on my system. The 'Windows 2000 DDK' is now only available to MSDN subscribers and I am not yet an MSDN subscriber. If the above infromation is correct, can anyone here on the forum who has the Windows 2000 DDK post back with the year(s) and month(s) of the MSDN subscription CD that included the DDK. Thank you for your help. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72217
  - 24
    - Migrating from KS1.0 (stream.sys) to AVStream Hi, When I have the sources of a driver that currently uses KS1.0 (stream.sys) is it difficult to rewrite the driver so that it uses AVStream instead? What would be a good starting point of rewriting the driver? Does it also effect the application that I'm currently using or do I need to rewrite the application as well? Avi Cohen Stuart. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72214
  - 25
    - Problems performing USB Isochronous/Bulk Read/Writes and unplugging device Hello all, hello Mr. Roberts! After clearing some general misunderstandings, maybe you could help me once more with the second part of my former post. I would be very grateful for your assistance. I described it as follows: >Depending on the pipe type I leave the dispatch routine forwarding the >current Irp and device object to a validation routine for isochronous >transfers (because they are more complicated) or bulk transfer >completion routine. Isochronous completion is done as it can be seen >the original sample. Microsoft did in their samples the validation for >isochronous and both validation and transaction in the case of bulk >transfers in the dispatch routine. Although I copied and pasted the >whole algorithm from their (fine-working [standalone]) drivers, the system >crashes when I try to perform a bulk/isochronous read or write. What >rule did I violate? Moreover I recognized the same crash behaviour when I unplug one or both devices. I tried to get some debugging messages via DbgView from Sysinternals, but the system crashes, without storing the information into the given log file. I checked the in- and decrements on the stack without result. They seem okay to me. Since I solely introduced the validation routine for isochronous transfer and sourced the transfer algorithm of the bulk transmission out, I assume it must have something to do with the parameters I forward to these functions. I appreciate your help in advance, special thanks to Mr. Roberts who helped me this far. Tag: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP Tag: 72211

I'm writing an audio driver and trying to implement support for
WHDR_BEGINLOOP and WHDR_ENDLOOP. Unfortunately, I cannot find very
comprehensive documentation on these flags. So I have a few questions.

1. Are nested loops supposed to be supported?

2. If nested loops are supported, what is the behavior of BreakLoop when
you are playing a nested loop? Does it break out of just the inside loop,
or all loops currently playing?

3. If the WHDR_BEGINLOOP flag is set and WAVEHDR::dwLoops is 0, do you just
ignore the entire loop without playing it all?

(And I have tried these with other audio drivers, but looping seems to be
badly supported by whatever I'm testing against. It doesn't seem to support
looping if WHDR_BEGINLOOP and WHDR_ENDLOOP are not both specified in the
same block.)

Thanks in advance.

Top

Re: Installable Audio Driver (MMSYSTEM) and WHDR_BEGINLOOP - WHDR_ENDLOOP by n/a>

n/a>
Fri Dec 02 11:10:44 CST 2005

Anyone know of a book or another group that might answer this question?

<n/a> wrote in message news:OT7wCJH8FHA.952@TK2MSFTNGP12.phx.gbl...
> I'm writing an audio driver and trying to implement support for
> WHDR_BEGINLOOP and WHDR_ENDLOOP. Unfortunately, I cannot find very
> comprehensive documentation on these flags. So I have a few questions.
>
> 1. Are nested loops supposed to be supported?
>
> 2. If nested loops are supported, what is the behavior of BreakLoop when
> you are playing a nested loop? Does it break out of just the inside loop,
> or all loops currently playing?
>
> 3. If the WHDR_BEGINLOOP flag is set and WAVEHDR::dwLoops is 0, do you
> just ignore the entire loop without playing it all?
>
> (And I have tried these with other audio drivers, but looping seems to be
> badly supported by whatever I'm testing against. It doesn't seem to
> support looping if WHDR_BEGINLOOP and WHDR_ENDLOOP are not both specified
> in the same block.)
>
> Thanks in advance.
>

Top