[wdmaudiodev] Re: AVStream Mixer Problems
- From: "DJ Sisolak" <dsisolak@xxxxxxxxxxxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 25 Aug 2004 12:50:25 -0700
Hi John,
I would like to add to Mathieu's comments that if the support handler
does not return the expected structures and simply returns success as
you say, then the control will likely not function as well.
On a side note, does your device implement the AV/C Audio subunit spec?
Thx,
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 Mathieu Routhier
Sent: Wednesday, August 25, 2004 11:35 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: AVStream Mixer Problems
John,
Obviously, if your hardware needs a message to change its volume value,
yes you need to send a message to it. Maybe I misunderstood the
question?
About the second question, yes, these controls are inserted by
kmixer/sysaudio. I would suggest you implement volume control on your
master volume and leave the other controls untouched. The inputs from
those lines are mixed directly into your audio device, so you couldn't
differentiate these feeds even if you wanted to. And for the balance
control, this translates to volume commands; so you don't really need to
do anything special for this to work, other than supporting a stereo
volume commands.
Mat
________________________________
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of John D. Farmer
Sent: Wednesday, August 25, 2004 1:45 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: AVStream Mixer Problems
I was able to get the Volume Control mixer enabled by putting in the
Values structure mentioned below as well as putting in a support handler
(all it does is return STATUS_SUCCESS). However none of the control
work, do I need to send AVC commands (this is a 1394 audio device) down
to the device to adjust the volume and the mute settings, perhaps
implement something in the support handler, or do I need to do something
else that will make these controls functional? One other question. I
have in my set of mixers which includes: Wave, SW Synth and CD Player.
I assume these mixers are put there by KMixer, and they seem to do a
fine job of controlling the volume or muting it, but how can I get rid
of these mixers so I can control volume, mute, and balance all by
myself?
Thanks again for all your help,
John
----- Original Message -----
From: John D. Farmer <mailto:johndfarmer@xxxxxxxxxxx>
To: wdmaudiodev@xxxxxxxxxxxxx
Sent: Wednesday, August 25, 2004 7:18 AM
Subject: [wdmaudiodev] Re: AVStream Mixer Problems
DJ,
I have filled in the Values member of the structure using the
&VolumeValues found in the following code:
static
KSPROPERTY_STEPPING_LONG VolumeRangeAndStep [] =
{
{
1, // SteppingDelta
0, // Reserved
-32767, // Minimum
32767 // Maximum
}
};
static
KSPROPERTY_MEMBERSLIST VolumeMembersList [] =
{
{
{
KSPROPERTY_MEMBER_RANGES,
sizeof (VolumeRangeAndStep),
SIZEOF_ARRAY (VolumeRangeAndStep),
0
},
(PVOID) VolumeRangeAndStep
},
};
static
KSPROPERTY_VALUES VolumeValues =
{
{
STATICGUIDOF (KSPROPTYPESETID_General),
VT_I4,
0
},
SIZEOF_ARRAY (VolumeMembersList),
VolumeMembersList
};
This still doesnt seem to make a difference, because the Volume
Control mixer is still disabled.
Thanks,
John
----- Original Message -----
From: DJ Sisolak
<mailto:dsisolak@xxxxxxxxxxxxxxxxxxxxxx>
To: wdmaudiodev@xxxxxxxxxxxxx
Sent: Tuesday, August 24, 2004 3:52 PM
Subject: [wdmaudiodev] Re: AVStream Mixer Problems
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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