[wdmaudiodev] Re: AVStream Mixer Problems
- From: Harry Graham <harry_graham@xxxxxxxxxx>
- To: "'wdmaudiodev@xxxxxxxxxxxxx'" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Tue, 24 Aug 2004 15:25:33 -0700
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 <mailto: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----------------------ToPin
{ 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 <mailto: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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