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Old 11-14-2007, 06:27 AM   #1
davidoneone
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Red face How to control volume of ALSA


I just finished developing a mediaplayer under FC7, with audio rendering on ALSA/OSS and video rendering on SDL/DFB/FB. But when I tried to control volume on ALSA, I found there's no related info or sample cases. I'm blocked. Anyone got it? Any hint is welcome. Appreciation to u.
 
Old 11-14-2007, 10:32 AM   #2
indeliblestamp
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Run alsamixer on a terminal for volume control. If you want to make the volume settings permanent, run alasactl store as root.
 
Old 11-14-2007, 09:37 PM   #3
davidoneone
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Thumbs up

Setting by tools is not the way that I want. I want to control it in source code of C or C++ in my framework. Thank you anyway.
 
Old 11-15-2007, 02:28 AM   #4
indeliblestamp
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Sorry, that was a pretty dumb answer. Maybe this should be moved to the programming section or something..
 
Old 11-16-2007, 01:56 AM   #5
davidoneone
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Smile that's all right

Take it easy. Any way, thanks for you answer. Now I have resovled this problem by calling some APIs of ALSA, like as snd_mixer_open, snd_mixer_selem_set_playback_volume(...) and so on. Thank u,again.
 
Old 11-16-2007, 02:02 AM   #6
davidoneone
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It's you who inspired me. I went over the source of mixeralsa and found this resolution. So u deserve my appreciation. Thank u, arungoodboy
 
Old 11-16-2007, 04:54 AM   #7
indeliblestamp
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Oh okay, I'm glad you were able to solve it!
 
  


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