[wdmaudiodev] Re: Need help on KSPROPSETID_Jack implementation.
- From: Kenny Ong <fluffy_ko@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Thu, 9 Mar 2006 23:57:37 -0800 (PST)
Hi Mitchell,
Thanks for your info and now i'm able to get the jack description displayed
on my speaker endpoint.
Btw, just wanted to check is there any way to change or customize the text
that display on the left and right of each color jack ?
(e.g. "L R @ Rear Panel 3.5mm Jack" @ - speaker jack)
Personally i don't think the description like "L R" or "RR RL" makes any
sense to a typical end user. And also it'll will be nice if i could customize
them and display some useful information instead...
Thanks!
Kenny.
Mitchell Rundle <mitchr@xxxxxxxxxxxxx> wrote:
The documentation for this property is not done yet, but it is on our
radar. Here's some info to get you started.
Basically, you implement KSPROPERTY_JACK_DESCRIPTION property as a
multi-item, pin-wise property handled through the filter handle. i.e. the
implementation semantics are the same as for (KSPROPSETID_Topology,
KSPROPERTY_TOPOLOGY_NODES) and (KSPROPSETID_Topology,
KSPROPERTY_TOPOLOGY_CONNECTIONS). The property should be supported on
bridge-pins that are associated with 1 or more physical jacks.
Your handler should return a buffer of size
sizeof(KSMULTIPLE_ITEM) + n * sizeof(KSJACK_DESCRIPTION)
where n = KSMULTIPLE_ITEM.count = number of jacks for this bridge pin =
number of KSJACK_DESCRIPTION structs.
The buffer should contain
KSMULTIPLE_ITEM
KSJACK_DESCRIPTION 0
KSJACK_DESCRIPTION 1
...
KSJACK_DESCRIPTION n-1
Each KSJACK_DESCRIPTION struct should have info about 1 jack. The
ChannelMapping field refers to the channels that are handled by that jack only.
e.g. if your devices supports 5.1, then your speaker bridge pin is probably
associated with 3 jacks, so you should have 3 KSJACK_DESCRIPTION structs and
each one should have a ChannelMappings value with 2 bits.
Hopefully this is enough to get you started. Let me know if you have any
questions.
Regards,
Mitch Rundle
Microsoft Corp
This posting is provided "AS IS" with no warranties, and confers no rights.
---------------------------------
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Kenny Ong
Sent: Tuesday, March 07, 2006 10:00 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Need help on KSPROPSETID_Jack implementation.
I'm trying to add Jack description to my audio device so that Vista will be
able to display it on the speaker endpoint. Unfortunately, only manage to
find the macros and definitions(portcls.h) in the WDK 5308, but not a single
sample or doc on it.
Can anyone help?
Thanks!
Kenny.
---------------------------------
Yahoo! Mail
Bring photos to life! New PhotoMail makes sharing a breeze.
---------------------------------
Yahoo! Mail
Bring photos to life! New PhotoMail makes sharing a breeze.
Other related posts:
