AVC Driver

-->

After Windows loads and initializes Avc.sys, Avc.sys uses standard AV/C unit and subunit commands to discover the active subunits on all AV/C devices connected to the IEEE 1394 bus (including any virtual subunits when the computer is a virtual AV/C unit). Avc.sys then generates device identifiers (IDs) for all of the active subunits. Next, Avc.sys uses standard Plug and Play (PnP) mechanisms to load the appropriate subunit driver for each subunit. The subunit driver to be loaded is selected based on the INF file that installs the subunit driver, and the subunit's device identifier, as generated by Avc.sys and described in AV/C Device IDs. The device identifier is generated from the unit information of the AV/C device, in combination with the subunit's SubunitType and SubunitID fields. The driver that supports a subunit can be vendor-specific, or it can be generic for the type of subunit. For example, the subunit driver for most DV camcorders is the Microsoft-provided Msdv.sys.

Subunit drivers communicate with Avc.sys through the standard IRP-based mechanism employed by all drivers based upon the WDM architecture. A subunit driver communicates with its AV/C subunit by allocating and sending IRPs down the driver stack to the AV/C protocol driver, Avc.sys. To make I/O requests, include the header file Avc.h, which is shipped with the Microsoft Windows Driver Kit (WDK).

A subunit driver allocates and initializes IRPs to be processed by Avc.sys. A subunit driver sets the IRP's Parameters.DeviceIoControl.IoControlCode member to the IOCTL that corresponds to the desired AV/C operation.

Avc.sys registers one of two device interfaces, depending upon which subunit driver stack that it was loaded to support (peer or virtual). These interfaces define the functionality that Avc.sys exports for subunit drivers, other drivers, and applications to use. Avc.sys then changes the interface's state to enabled or disabled according to the driver's PnP state.

Lenovo IdeaPad 300-14ISK AVC Camera Driver 6.3.9600.11105 for Windows 8.1 64-bit 16 downloads. Digital Camera / Webcam / Camcorder Other. Windows 8.1 64 bit. Synaptics Touchpad Driver 64bits offers laptops an enhanced synchronism with their pad, letting it to do more than other, more normal alternatives. Developed by Synaptics, the software works primarily with the trackpads they developed, but it is compatible with most laptops. Most recently, they have been optimised for working with.

This section describes the Microsoft-supplied Avc.sys function driver that provides support for the IEEE 1394 Audio/Video Control (AV/C) protocol. This section also provides guidelines to develop AV/C subunit drivers for your AV/C-compliant device. Details of the AV/C protocol are available on the 1394 Trade Association's website. Camera Driver (Chicony, Azurewave, Bison, AVC) for Windows 10 (64-bit) - Lenovo V310-14ISK, V310-15ISK.

Avc.sys registers a new instance of GUID_AVC_CLASS if it was loaded to provide support for external AV/C subunits (the peer stack). This interface supports only the following I/O control (IOCTL) code:

IOCTL_AVC_CLASS in turn supports multiple function codes. Child drivers of instances of Avc.sys to support peer subunits are guaranteed to have access to this interface through their parent device object.

The GUID_AVC_CLASS interface supports all IOCTL_AVC_CLASS function codes, although some have limitations on their use, as described in the reference pages for each function.

Avc.sys registers a new instance of GUID_VIRTUAL_AVC_CLASS, if it was loaded, to provide support for virtual AV/C subunits (the virtual stack). This interface supports four I/O control (IOCTL) codes:

The GUID_VIRTUAL_AVC_CLASS interface does not support every IOCTL_AVC_CLASS function code. The reference page for each individual function code specifies whether it is supported for GUID_VIRTUAL_AVC_CLASS instances of Avc.sys.

Driver

Ac Drivers Ac800v

IOCTL_AVC_CLASS IRPs are only supported in kernel mode (generally for driver-to-driver communication) through IRP_MJ_INTERNAL_DEVICE_CONTROL. Therefore, applications cannot directly access the functions provided by the IOCTL_AVC_CLASS IOCTL code.

The last three IOCTL codes are supported in both kernel-mode and user-mode through IRP_MJ_DEVICE_CONTROL. This means that applications can send these IOCTLs directly to Avc.sys.

The IOCTL_AVC_CLASS IOCTL code must always be accompanied by an I/O request block (IRB), which further describes the AV/C operation to perform. The IRB header includes a function number, which determines the structure of the rest of the IRB. The IRB structure and size varies according to the function. Avc.sys uses two custom IRBs:

The choice of which IRB a subunit driver must use depends on the desired function. For more information about the IOCTL_AVC_CLASS function codes supported by Avc.sys, see AV/C Protocol Driver Function Codes.

The primary AV/C function used by subunit drivers is AVC_FUNCTION_COMMAND, which uses the AVC_COMMAND_IRB structure. AVC_FUNCTION_COMMAND sends AV/C requests and receives the corresponding AV/C responses. Details for building AV/C commands are handled by Avc.sys, but the subunit driver must provide the AV/C opcode and operands of each command.

RSS Feed for this tag 32 applications totalLast updated: Jun 28th 2019, 12:30 GMT

Lenovo Yoga 330-11IGM AVC Camera Driver 10.13.17134.14 for Windows 10 64-bit

52
downloads
Windows 10 64 bit
Jun 28th 2019, 12:30 GMT

Lenovo B50-80 AVC Camera Driver 6.3.9600.11100 for Windows 7

53
downloads
Windows 7 64 bit, Windows 7
Mar 8th 2018, 03:03 GMT

Lenovo E50-80 AVC Camera Driver 6.3.9600.11100 for Windows 7

21
downloads
Windows 7 64 bit, Windows 7
Mar 5th 2018, 12:29 GMT

Lenovo E40-80 AVC Camera Driver 6.3.9600.11100 for Windows 7

32
downloads
Windows 7 64 bit, Windows 7
Mar 1st 2018, 15:13 GMT

Lenovo B40-80 AVC Camera Driver 6.3.9600.11100 for Windows 7

26
downloads
Windows 7 64 bit, Windows 7
Feb 21st 2018, 12:49 GMT

Lenovo IdeaPad 305-15IBD AVC Camera Driver 6.3.9600.11100 for Windows 7

19
downloads
Windows 7 64 bit, Windows 7
Feb 20th 2018, 02:35 GMT

Lenovo IdeaPad 305-14IBD AVC Camera Driver 6.3.9600.11100 for Windows 7

20
downloads
Windows 7 64 bit, Windows 7
Feb 17th 2018, 10:57 GMT

Lenovo IdeaPad 300-17ISK AVC Camera Driver 6.3.9600.11105 for Windows 8.1 64-bit

18
downloads
Windows 8.1 64 bit
Dec 17th 2017, 14:11 GMT

Lenovo IdeaPad 300-15ISK AVC Camera Driver 6.3.9600.11105 for Windows 8.1 64-bit

19
downloads
Avc driver license test
Windows 8.1 64 bit
Dec 17th 2017, 08:06 GMT

Lenovo IdeaPad 300-14ISK AVC Camera Driver 6.3.9600.11105 for Windows 8.1 64-bit

16
downloads
Windows 8.1 64 bit
Dec 15th 2017, 12:46 GMT

Lenovo Yoga 510-14ISK AVC Camera Driver 6.0.1326.19 for Windows 10 64-bit

1,746
downloads
Windows 10 64 bit
Dec 4th 2016, 05:20 GMT

Lenovo Yoga 510-14IKB AVC Camera Driver 6.0.1326.19 for Windows 10 64-bit

33
downloads
Windows 10 64 bit
Dec 3rd 2016, 12:34 GMT

Lenovo Yoga 510-14AST AVC Camera Driver 6.0.1326.19 for Windows 10 64-bit

17
downloads
Windows 10 64 bit
Dec 2nd 2016, 07:41 GMT

Lenovo Yoga 510-15ISK AVC Webcam Driver 6.0.1326.23 for Windows 10 64-bit

72
downloads
Windows 10 64 bit
Nov 29th 2016, 03:18 GMT
MikroTikRouterOS X86 Firmware 6.47.9
NVIDIAData Center Graphics Driver 461.33 for Windows 10 64-bit
NVIDIAData Center Graphics Driver 461.33 for Server 2019
ASUSRT-AC68P AsusWrt-Merlin Firmware 386.1.0
UbiquitiEdgeRouter ER-12P Router Firmware 2.0.9 Hotfix 1
NVIDIAData Center Graphics Driver 461.33 for Server 2016
UbiquitiEdgeRouter ER-8-XG Router Firmware 2.0.9 Hotfix 1
ASUSRT-AC68UF AsusWrt-Merlin Firmware 386.1.0
essential drivers

Lenovo Yoga 510-15IKB AVC Webcam Driver 6.0.1326.23 for Windows 10 64-bit

31
downloads
Windows 10 64 bit
Nov 25th 2016, 11:49 GMT

Lenovo IdeaPad Y910-17ISK AVC Camera Driver 10.0.10586.11195 for Windows 10 64-bit

26
downloads
Windows 10 64 bit
Nov 4th 2016, 07:54 GMT

Lenovo Y70-70 AVC Camera Driver 6.3.9600.11105 for Windows 10 64-bit

32
downloads
Windows 10 64 bit
Aug 27th 2016, 22:39 GMT

Lenovo Y50-70 AVC Camera Driver 6.3.9600.11105 for Windows 10 64-bit

38
downloads
Windows 10 64 bit
Avc driver download Aug 25th 2016, 08:45 GMT

Lenovo V310-15IKB AVC Camera Driver 6.0.1326.18 for Windows 10 64-bit

21
downloads
Windows 10 64 bit
Aug 25th 2016, 07:13 GMT

Lenovo V310-14IKB AVC Camera Driver 6.0.1326.18 for Windows 10 64-bit

24
downloads
Windows 10 64 bit
Aug 25th 2016, 07:11 GMTDriver

Lenovo B50-70 AVC Camera Driver 6.3.9600.11103 for Windows 10 64-bit

28
downloads
Windows 10 64 bit
Jun 11th 2016, 16:23 GMTAVC Driver

Lenovo B50-50 AVC Camera Driver 6.3.9600.11103 for Windows 10 64-bit

15
downloads
Windows 10 64 bit
Jun 8th 2016, 19:50 GMT

Lenovo B50-70 AVC Camera Driver 6.3.9600.11097 for Windows 8.1 64-bit

17
downloads
Windows 8.1 64 bit
Jun 8th 2016, 14:28 GMT

Lenovo B50-50 AVC Camera Driver 6.3.9600.11097 for Windows 8.1 64-bit

25
downloads
Windows 8.1 64 bit
Jun 7th 2016, 07:23 GMT

Lenovo U31-70 AVC Camera Driver 6.3.9600.11076 for Windows 7 64-bit

23
downloads
Windows 7 64 bit
Jan 8th 2016, 15:25 GMT

Lenovo U31-70 Camera Driver 6.3.9600.11105 for Windows 10 64-bit

219
downloads
Windows 10 64 bit
Jan 8th 2016, 15:21 GMT

Lenovo U31-70 AVC Camera Driver 6.3.9600.11076 for Windows 8.1 64-bit

17
downloads

Avc 1410 Driver

Windows 8.1 64 bit
Jan 8th 2016, 13:02 GMT

Lenovo M41-80 Camera Driver 10.0.10120.11113 for Windows 7

683
downloads
Windows 7
Jan 7th 2016, 12:32 GMT

Lenovo IdeaPad Y700-14ISK Camera Driver 6.3.9600.11105 for Windows 7 64-bit

569
downloads
Windows 7 64 bit
Dec 7th 2015, 14:14 GMT

Lenovo IdeaPad Y700-14ISK Camera Driver 6.3.9600.11105 for Windows 10 64-bit

312
downloads
Windows 10 64 bit
Nov 8th 2015, 12:35 GMT