2010/2/23 Clemens Ladisch <clemens@xxxxxxxxxx>
> Lennart Poettering wrote:
> > On Sun, 21.02.10 12:01, Raymond Yau (superquad.vortex2@xxxxxxxxx) wrote:
> > > However Simple Mixer API cannot know the subdevice number , you have to
> use
> > > control API ( the lower level API used by Simple Mixer API )
> >
> > Unfortunately there is no way from the simple mixer to the lower level
> > mixer.
>
> Often, there is no 1:1 correspondence between mixer elements and PCM
> devices. Only mixer controls with interface PCM (not MIXER) have (sub-)
> device numbers, and at the moment this is used only for controls that
> are associated with the streams of hardware-mixing-capable cards.
>
But there is really 1:1 correspondence for HDA capture sudevices and the
control related to capturing
card 1: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
Subdevices: 3/3
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Card hw:1 'Intel'/'HDA Intel at 0xff9f4000 irq 22'
Mixer name : 'Analog Devices AD1988'
Components : 'HDA:11d41988'
Controls : 48
Simple ctrls : 26
Simple mixer control 'Capture',0
Capabilities: cvolume cswitch
Capture channels: Front Left - Front Right
Limits: Capture 0 - 54
Front Left: Capture 39 [72%] [0.00dB] [off]
Front Right: Capture 39 [72%] [0.00dB] [off]
Simple mixer control 'Capture',1
Capabilities: cvolume cswitch
Capture channels: Front Left - Front Right
Limits: Capture 0 - 54
Front Left: Capture 39 [72%] [0.00dB] [off]
Front Right: Capture 39 [72%] [0.00dB] [off]
Simple mixer control 'Capture',2
Capabilities: cvolume cswitch
Capture channels: Front Left - Front Right
Limits: Capture 0 - 54
Front Left: Capture 39 [72%] [0.00dB] [off]
Front Right: Capture 39 [72%] [0.00dB] [off]
Simple mixer control 'Input Source',0
Capabilities: cenum
Items: 'Front Mic' 'Line' 'Mic' 'CD' 'Mix'
Item0: 'Mic'
Simple mixer control 'Input Source',1
Capabilities: cenum
Items: 'Front Mic' 'Line' 'Mic' 'CD' 'Mix'
Item0: 'Front Mic'
Simple mixer control 'Input Source',2
Capabilities: cenum
Items: 'Front Mic' 'Line' 'Mic' 'CD' 'Mix'
Item0: 'Front Mic'
control.28 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Capture Switch'
value.0 false
value.1 false
}
control.29 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 54'
comment.dbmin -5850
comment.dbmax 2250
iface MIXER
name 'Capture Volume'
index 1
value.0 39
value.1 39
}
control.30 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Capture Switch'
index 1
value.0 false
value.1 false
}
control.31 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 54'
comment.dbmin -5850
comment.dbmax 2250
iface MIXER
name 'Capture Volume'
index 2
value.0 39
value.1 39
}
control.32 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Capture Switch'
index 2
value.0 false
value.1 false
}
control.33 {
comment.access 'read write'
comment.type ENUMERATED
comment.count 1
comment.item.0 'Front Mic'
comment.item.1 Line
comment.item.2 Mic
comment.item.3 CD
comment.item.4 Mix
iface MIXER
name 'Input Source'
value Mic
}
control.34 {
comment.access 'read write'
comment.type ENUMERATED
comment.count 1
comment.item.0 'Front Mic'
comment.item.1 Line
comment.item.2 Mic
comment.item.3 CD
comment.item.4 Mix
iface MIXER
name 'Input Source'
index 1
value 'Front Mic'
}
control.35 {
comment.access 'read write'
comment.type ENUMERATED
comment.count 1
comment.item.0 'Front Mic'
comment.item.1 Line
comment.item.2 Mic
comment.item.3 CD
comment.item.4 Mix
iface MIXER
name 'Input Source'
index 2
value 'Front Mic'
}
>
> Getting information about the mixer layout (like the nodes reported by
> HDA and USB devices) is on the TODO list; the only reason it isn't being
> implemented is lack of time.
>
>
> Regards,
> Clemens
>
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