[wdmaudiodev] Re: AVStream Mixer Problems
- From: "DJ Sisolak" <dsisolak@xxxxxxxxxxxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Tue, 24 Aug 2004 15:52:34 -0700
Hello Harry,
You are correct that if the "Values" member of the structure is filled
in then AVStream will make the proper responses as well as filling in a
"SupportHandler".
John, have you filled in either of these entries?
DJ
This posting is provided "AS IS" with no warranties, and confers no
rights.
________________________________
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Harry Graham
Sent: Tuesday, August 24, 2004 3:26 PM
To: 'wdmaudiodev@xxxxxxxxxxxxx'
Subject: [wdmaudiodev] Re: AVStream Mixer Problems
DJ,
I find this to be very strange. The DDK explicitly states the following
under the "SupportHandler" member of KSPROPERTY_ITEM:
Basic support queries, range queries, and relations queries are
automatically handled by AVStream, which returns the relevant values
from other members of this KSPROPERTY_ITEM structure.
Since the range values are already defined by the "Values" member of
KSPROPERTY_ITEM of the KSPROPERTY_SET of the KSAUTOMATION_TABLE in the
KSNODE_DESCRIPTOR in the KSFILTER_DESCRIPTOR, it makes sense to me that
AVStream should be handling the Basic Support Queries. Is the
documentation wrong on this?
Harry
-----Original Message-----
From: DJ Sisolak [mailto:dsisolak@xxxxxxxxxxxxxxxxxxxxxx]
Sent: Tuesday, August 24, 2004 2:54 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: AVStream Mixer Problems
Hello John,
It appears from what you have said below that a critical piece
is missing. Look at the KSPROPERTY_ITEM structure you have filled in for
the Volume node. You will notice a field in the structure for the
"PFNKSHANDLER SupportHandler". This is the function that is called by
the audio stack to determine the ranges and channels of volume controls,
mutes, etc. This function is described in the DDK in the "Basic Support
Queries for Audio Properties" section.
DJ
This posting is provided "AS IS" with no warranties, and confers
no rights.
________________________________
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of John D. Farmer
Sent: Tuesday, August 24, 2004 2:13 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: AVStream Mixer Problems
I've got the controls all set up, now when I go to the Sounds
and Audio Devices I see a 'Volume Control' mixer added to my Playback
volume controls. When I bring up the 'Volume Control' mixer all the
sliders on the mixer are disabled. I have implemented the
KSEVENT_CONTROL_CHANGE event for these nodes, and I have implemented the
KSPROPSETID_Audio properties (KSPROPERTY_AUDIO_VOLUME_LEVEL and
KSPROPERTY_AUDIO_CPU_RESOURCES) for the volume nodes, as well as the
Get/Set Property Handler for KSPROPERTY_AUDIO_VOLUME_LEVEL (I keep a
value of the current volume, and give it back for the Get, and for the
Set I check the requested volume level and if it is within range I save
that value off as the current volume value and return success). I have
implemented the Get Property Handler on the
KSPROPERTY_AUDIO_CPU_RESOURCES.
I have also implemented the KSPROPERTY_AUDIO_MUTE Property and
the Get/Set Property Handlers for the Volume Control mixer (again I save
off the state of the mute and give it back for the Get and I change the
current mute value and return success for the Set), but when I click on
the check box in the Volume Control mixer it nothing seems to happen. I
can see the change happening in KS Studio after I've made the change,
but I can still hear sound out of my device.
So what do I need to do to enable the sliders on the Volume
Control mixer and get my mute to work?
Thanks,
John Farmer
----- Original Message -----
From: DJ Sisolak
<mailto:dsisolak@xxxxxxxxxxxxxxxxxxxxxx>
To: wdmaudiodev@xxxxxxxxxxxxx
Sent: Friday, August 20, 2004 1:27 PM
Subject: [wdmaudiodev] Re: AVStream Mixer Problems
OK, I misunderstood your original message to read that
the volume and mute controls were all before the SUM node. So it would
appear that for some reason the controls themselves are not currently
functioning or at least not sending responses to requests, or perhaps
there is a problem in the BASIC_SUPPORT responses. There could be quite
a few reasons for this. You stated below that:
I assume once I implement the Master Volume mixer that
the controls on the 'Device volume' and 'Speaker settings' sections will
be enabled. So how do I implement the Master Volume mixer?
Does this mean that you have not yet implemented the
controls?
Unlike portcls drivers, avstream topologies are not
separated from the streaming. They are part of the same "filter
factory". Creation of a filter from the filter factory would instantiate
the streaming and topology for that filter.
Thanks,
DJ Sisolak
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 John D. Farmer
Sent: Friday, August 20, 2004 11:27 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: AVStream Mixer Problems
I've tried a number of different topologies, as I
mentioned before I looked at the topologies of other soundcards and this
seems to be the most correct:
static
KSTOPOLOGY_CONNECTION MiniportConnections[] =
{
//FromNode------------------FromPin-----ToNode----------------------ToPi
n
{ KSFILTER_NODE, 1, KSNODE_SPEAKER_VOLUME, 1 },
{ KSNODE_SPEAKER_VOLUME, 0, KSNODE_SPEAKER_MUTE, 1 },
{ KSNODE_SPEAKER_MUTE, 0, KSNODE_ANALOG_OUT_SUM, 1
},
{ KSFILTER_NODE, 3, KSNODE_MICROPHONE_VOLUME, 1 },
{ KSNODE_MICROPHONE_VOLUME, 0, KSNODE_MICROPHONE_MUTE,
1 },
{ KSNODE_MICROPHONE_MUTE, 0, KSNODE_ANALOG_OUT_SUM, 2
},
{ KSNODE_ANALOG_OUT_SUM, 0, KSNODE_MASTER_VOLUME,
1 },
{ KSNODE_MASTER_VOLUME, 0, KSNODE_MASTER_MUTE, 1
},
{ KSNODE_MASTER_MUTE, 0, KSFILTER_NODE, 0 }
};
and looks something like this in KS Studio:
===================================
1 0-|| Vol -> Mute \
/ - || - {} 0
3 -{} || Vol -> Mute -- Sum -> Volume -> Mute/
|| -o 2
===================================
----- Original Message -----
From: DJ Sisolak
<mailto:dsisolak@xxxxxxxxxxxxxxxxxxxxxx>
To: wdmaudiodev@xxxxxxxxxxxxx
Sent: Friday, August 20, 2004 11:12 AM
Subject: [wdmaudiodev] Re: AVStream Mixer
Problems
Hello John,
I am guessing the problem you are seeing is due
to the placement of the SUM node in your topology. When the topology
parser in wdmaud sees this node it assumes there is some sort of
branching going on and looks downstream for master controls. Thus if
your Volume and mute controls are upstream fro this node they would not
be considered the master.
What is the exact topology you are describing?
Thanks,
DJ Sisolak
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 John D. Farmer
Sent: Friday, August 20, 2004 9:47 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] AVStream Mixer Problems
Greetings,
I'm creating a AVStream audio device that
registers itself as a audio playback device. When I select the device
as my default playback device, I can hear the sound and everything is
fine and good. But now I am working on implementing the audio mixer for
the device (e.g. Volume, Mute, Microphone Volume, ect).
When I open up the Sounds and Audio Devices
control panel, 'Device volume' section is grayed out as well as the
buttons in the 'Speaker settings' section on the Volume tab. When I go
to the Audio tab I can access the Volume and Advanced buttons for both
my Sound playback and Sound recording. If I choose the Volume button
for Sound playback, I see my Wave, CD Audio, and SW Synth mixers, but I
seem to lack the Master Volume mixer. If I go to the properties in
Sndvol32 for my device I see "Playback" and "Recording" radio buttons.
Under playback I see the same mixers as I saw previously, and under
Recording I see no volume controls.
I assume once I implement the Master Volume
mixer that the controls on the 'Device volume' and 'Speaker settings'
sections will be enabled. So how do I implement the Master Volume
mixer?
I've created a simple wave topology that
implements Volume, Mute, SUM, ADC and DAC nodes for my speaker and
microphone pins. When I look in KS Studio I see my driver under the
KSCATEGORY_AUDIO Filter Factories as a Audio device (or a \wave device).
I looked at other soundcards on different systems and they also seem to
have a Mixer node (or a \topology device). I assume that these
soundcard drivers are portcls drivers. When I instantiate both of these
filters they automatically connect (I've seen this behavior before in
the MSVAD sample and understand the theory of how these filters work
together). So is there a way to create a Topology Filter and a Wave
Filter for my device, or does AVStream do it a different way. I see
that portcls drivers uses PcRegisterSubDevice to register these filters
but I have been unable to find the AVStream equivalent.
Any help would be greatly appreciated.
Regards,
John Farmer
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