sorry I havn’t any clue for this so that I am posting it again.
On Thu, Nov 23, 2006 at 11:09:46AM -0500, xxxxx@hotmail.com wrote:
>An instance of usbaudio.sys only handles data in one direction. If this
>is a speaker, you should only see IOCTL_KS_WRITE_STREAM. If it is a
>microphone, you should only see IOCTL_KS_READ_STREAM.Is this mean that I am using two instances of USBaudio.sys in the
system?
If you have USB audio input and USB audio output, then yes, there will be
two instances of usbaudio.sys in your sysem.
also means that I need to install my driver in a different
registry key?
Yes, your audio input and audio output devices are two separate driver
stacks.
> How are you going to know what format the data is?
What does it mean? is it mean the format of a wave format? I will restrict
this with IOCTL_KS_PROPERTY to 48K/Stereo to limit the performance.
You can’t guarantee that your devices will handle 48k stereo.
Tim Roberts, xxxxx@probo.com
Providenza & Boeklheide, Inc.
Thank you Tim.
I tried to verify whether I have two USB audio composite registries in my
computer when I added an USB audio device. This device can play out and record
in.
Below is my registry keys when I added my device. I was expecting to see 2
usbaudio.sys’ in this location, but couldn’t find it, where the active service
is “usbaudio”. Is it right location? or somewhere else to put the upper filter?
< Registgry Key >
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_077d&Pid_07af]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_077d&Pid_07af\5&1478781
6&0&1]
“DeviceDesc”=“USB Composite Device”
“LocationInformation”=“iMic USB audio system”
“Capabilities”=dword:00000084
“UINumber”=dword:00000000
“HardwareID”=hex(7):55,00,53,00,42,00,5c,00,56,00,69,00,64,00,5f,00,30,00,37,<br> 00,37,00,64,00,26,00,50,00,69,00,64,00,5f,00,30,00,37,00,61,00,66,00,26,00,<br> 52,00,65,00,76,00,5f,00,30,00,30,00,30,00,35,00,00,00,55,00,53,00,42,00,5c,<br> 00,56,00,69,00,64,00,5f,00,30,00,37,00,37,00,64,00,26,00,50,00,69,00,64,00,<br> 5f,00,30,00,37,00,61,00,66,00,00,00,00,00
“CompatibleIDs”=hex(7):55,00,53,00,42,00,5c,00,44,00,65,00,76,00,43,00,6c,00,<br> 61,00,73,00,73,00,5f,00,30,00,30,00,26,00,53,00,75,00,62,00,43,00,6c,00,61,<br> 00,73,00,73,00,5f,00,30,00,30,00,26,00,50,00,72,00,6f,00,74,00,5f,00,30,00,<br> 30,00,00,00,55,00,53,00,42,00,5c,00,44,00,65,00,76,00,43,00,6c,00,61,00,73,<br> 00,73,00,5f,00,30,00,30,00,26,00,53,00,75,00,62,00,43,00,6c,00,61,00,73,00,<br> 73,00,5f,00,30,00,30,00,00,00,55,00,53,00,42,00,5c,00,44,00,65,00,76,00,43,<br> 00,6c,00,61,00,73,00,73,00,5f,00,30,00,30,00,00,00,55,00,53,00,42,00,5c,00,<br> 43,00,4f,00,4d,00,50,00,4f,00,53,00,49,00,54,00,45,00,00,00,00,00
“ClassGUID”=“{36FC9E60-C465-11CF-8056-444553540000}”
“Class”=“USB”
“Driver”=“{36FC9E60-C465-11CF-8056-444553540000}\0017”
“Mfg”=“(Standard USB Host Controller)”
“Service”=“usbccgp”
“ConfigFlags”=dword:00000000
“ParentIdPrefix”=“6&ea0a9e0&1”
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_077d&Pid_07af\5&1478781
6&0&1\Device Parameters]
“ExtPropDescSemaphore”=dword:00000001
“SymbolicName”=“\??\USB#Vid_077d&Pid_07af#5&14787816&0&1#{a5dcbf10-6530-11d2-90
1f-00c04fb951ed}”
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_077d&Pid_07af\5&1478781
6&0&1\LogConf]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_077d&Pid_07af\5&1478781
6&0&1\Control]
“ActiveService”=“usbccgp”
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_077d&Pid_07af&MI_00]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_077d&Pid_07af&MI_00\6&e
a0a9e0&1&0000]
“DeviceDesc”=“USB Audio Device”
“LocationInformation”=“iMic USB audio system”
“Capabilities”=dword:000000a4
“UINumber”=dword:00000000
“HardwareID”=hex(7):55,00,53,00,42,00,5c,00,56,00,69,00,64,00,5f,00,30,00,37,<br> 00,37,00,64,00,26,00,50,00,69,00,64,00,5f,00,30,00,37,00,61,00,66,00,26,00,<br> 52,00,65,00,76,00,5f,00,30,00,30,00,30,00,35,00,26,00,4d,00,49,00,5f,00,30,<br> 00,30,00,00,00,55,00,53,00,42,00,5c,00,56,00,69,00,64,00,5f,00,30,00,37,00,<br> 37,00,64,00,26,00,50,00,69,00,64,00,5f,00,30,00,37,00,61,00,66,00,26,00,4d,<br> 00,49,00,5f,00,30,00,30,00,00,00,00,00
“CompatibleIDs”=hex(7):55,00,53,00,42,00,5c,00,43,00,6c,00,61,00,73,00,73,00,<br> 5f,00,30,00,31,00,26,00,53,00,75,00,62,00,43,00,6c,00,61,00,73,00,73,00,5f,<br> 00,30,00,31,00,26,00,50,00,72,00,6f,00,74,00,5f,00,30,00,30,00,00,00,55,00,<br> 53,00,42,00,5c,00,43,00,6c,00,61,00,73,00,73,00,5f,00,30,00,31,00,26,00,53,<br> 00,75,00,62,00,43,00,6c,00,61,00,73,00,73,00,5f,00,30,00,31,00,00,00,55,00,<br> 53,00,42,00,5c,00,43,00,6c,00,61,00,73,00,73,00,5f,00,30,00,31,00,00,00,00,<br> 00
“ClassGUID”=“{4D36E96C-E325-11CE-BFC1-08002BE10318}”
“Class”=“MEDIA”
“Driver”=“{4D36E96C-E325-11CE-BFC1-08002BE10318}\0019”
“Mfg”=“(Generic USB Audio)”
“Service”=“usbaudio”
“ConfigFlags”=dword:00000000
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_077d&Pid_07af&MI_00\6&e
a0a9e0&1&0000\Device Parameters]
“ExtPropDescSemaphore”=dword:00000001
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_077d&Pid_07af&MI_00\6&e
a0a9e0&1&0000\LogConf]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_077d&Pid_07af&MI_00\6&e
a0a9e0&1&0000\Control]
“ActiveService”=“usbaudio”
Thank you