mixer control - Captuer Source - rename item name in enumerated control

mixer control - Captuer Source - rename item name in enumerated control

[Raymond]

Is it possible to rename "Video" to "MPU401" in enumerated "Capture 
Source" mixer control by the au88x0 driver ?

numid=39,iface=MIXER,name='Capture Source'
   ; type=ENUMERATED,access=rw---,values=2,items=8
   ; Item #0 'Mic'
   ; Item #1 'CD'
   ; Item #2 'Video' <---------------MPU 401 / wavetable daugther card
   ; Item #3 'Aux'
   ; Item #4 'Line'
   ; Item #5 'Mix'
   ; Item #6 'Mix Mono'
   ; Item #7 'Phone'
   : values=0,0


http://www.dearhoney.idv.tw/MUSEUM/soundcard-07.php

In Vortex and Vortex 2 sound cards , which has the wavetable connector, 
the output of the wavetable daughter card is connected to capture source 
- Video of analog mixer of AC97 codec.

This exclude all those onboard au8820 on IWill LE370, onboard au8830 on 
ASUS P3B-1394.

http://www.3dsoundsurge.com/faqs/vortex1techfaq.html#Why%20am%20I%20not%20getting%20any%20sound%20from%20my%20wavetable%20daughterboard?

http://www.3dsoundsurge.com/faqs/vortex2techfaq.html#Why%20am%20I%20not%20getting%20any%20sound%20from%20my%20wavetable%20daughterboard?




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Re: mixer control - Captuer Source - rename item name in enumerated control

[Takashi Iwai]

At Tue, 13 Sep 2005 23:22:14 +0800,
Raymond wrote:
> 
> Is it possible to rename "Video" to "MPU401" in enumerated "Capture 
> Source" mixer control by the au88x0 driver ?
> 
> numid=39,iface=MIXER,name='Capture Source'
>    ; type=ENUMERATED,access=rw---,values=2,items=8
>    ; Item #0 'Mic'
>    ; Item #1 'CD'
>    ; Item #2 'Video' <---------------MPU 401 / wavetable daugther card
>    ; Item #3 'Aux'
>    ; Item #4 'Line'
>    ; Item #5 'Mix'
>    ; Item #6 'Mix Mono'
>    ; Item #7 'Phone'
>    : values=0,0

Currently, you need an ugly hack.

Find "Capture Source" control and replace the private_value field with
the point to a new own struct ac97_enum.  For example,

/* taken from ac97/ac97_local.h */
#define AC97_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xtexts) \
{ .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
  .mask = xmask, .texts = xtexts }

static const char *my_own_sel[] = { "Mic", "CD", "WaveTable", "Aux",
"line", Mix", "Mix Mono", "Phone" };

static const struct ac97_enum my_own_enum =
AC97_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 8, my_own_sel);


Then use snd_ctl_find_id() to get a snd_kcontrol_t object, and
replace its private_value field with (unsigned long)&my_own_enum.


Takashi


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Re: mixer control - Captuer Source - rename item name in enumerated control

[Raymond]

Is it possible to detect which daugther card is connected (e.g Yamaha
DB50XG, TurtleBeach Cancun FX, Roland SCD-15...) and replace "Video"
with the name of daugther card on the mixer control ?

The hardware driver know how the hardware are connected more than the
alsa-lib

Not only the capture source will need to be changed.

numid=33,iface=MIXER,name='Video Playback Switch'
   ; type=BOOLEAN,access=rw---,values=1
   : values=on
numid=34,iface=MIXER,name='Video Playback Volume'
   ; type=INTEGER,access=rw---,values=2,min=0,max=31,step=0
   : values=9,9

It seem that get_compare_weight() use pre-defined names to perform
matching


Takashi Iwai wrote:
> At Tue, 13 Sep 2005 23:22:14 +0800,
> Raymond wrote:
> 
>>Is it possible to rename "Video" to "MPU401" in enumerated "Capture 
>>Source" mixer control by the au88x0 driver ?
>>
>>numid=39,iface=MIXER,name='Capture Source'
>>   ; type=ENUMERATED,access=rw---,values=2,items=8
>>   ; Item #0 'Mic'
>>   ; Item #1 'CD'
>>   ; Item #2 'Video' <---------------MPU 401 / wavetable daugther card
>>   ; Item #3 'Aux'
>>   ; Item #4 'Line'
>>   ; Item #5 'Mix'
>>   ; Item #6 'Mix Mono'
>>   ; Item #7 'Phone'
>>   : values=0,0
> 
> 
> Currently, you need an ugly hack.
> 
> Find "Capture Source" control and replace the private_value field with
> the point to a new own struct ac97_enum.  For example,
> 
> /* taken from ac97/ac97_local.h */
> #define AC97_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xtexts) \
> { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
>   .mask = xmask, .texts = xtexts }
> 
> static const char *my_own_sel[] = { "Mic", "CD", "WaveTable", "Aux",
> "line", Mix", "Mix Mono", "Phone" };
> 
> static const struct ac97_enum my_own_enum =
> AC97_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 8, my_own_sel);
> 
> 
> Then use snd_ctl_find_id() to get a snd_kcontrol_t object, and
> replace its private_value field with (unsigned long)&my_own_enum.
> 
> 
> Takashi
> 




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Re: Re: mixer control - Captuer Source - rename item name in enumerated control

[Clemens Ladisch]

Raymond wrote:
> Is it possible to detect which daugther card is connected (e.g Yamaha
> DB50XG, TurtleBeach Cancun FX, Roland SCD-15...) and replace "Video"
> with the name of daugther card on the mixer control ?

This would require some SysEx, but AFAIK the connector doesn't have a
back channel for MIDI.


Regards,
Clemens



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