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-
- SetVol 1.1
- ==========
-
- Are you kidding me?? A readme file is not required for this :)
-
- This is just an extremely simple utility that I wrote in order to set
- the sound card to the levels i like from the command line. To be honest
- I never understood how linux was doing it on bootup, and just wrote this
- to set it in the rc.d files so that I wasn't getting something ludicrous
- after a reboot.
-
- Compilation
- ===========
-
- To compile this puppy, just type
-
- gcc -o setvol setvol.c
-
- If you have any problems, just email me. This code should not
- cause a single problem to anyone... It's almost embarassing to submit :)
-
-
- Usage
- =====
-
- Just type "setvol" alone to get a usage output from setvol. But basically
- you just give it a device number from this list,
-
- SOUND_MIXER_VOLUME 0
- SOUND_MIXER_BASS 1
- SOUND_MIXER_TREBLE 2
- SOUND_MIXER_SYNTH 3
- SOUND_MIXER_PCM 4
- SOUND_MIXER_SPEAKER 5
- SOUND_MIXER_LINE 6
- SOUND_MIXER_MIC 7
- SOUND_MIXER_CD 8
- SOUND_MIXER_IMIX 9
- SOUND_MIXER_ALTPCM 10
- SOUND_MIXER_RECLEV 11
- SOUND_MIXER_IGAIN 12
- SOUND_MIXER_OGAIN 13
-
- If you give only a device by itself, like
-
- setvol 0
-
- the status of that device is returned. Both the left and right channels
- will come out alone. Nothing else is displayed. This is easy for
- setting variables, like
-
- LEFT_VOLUME=`setvol 0 | awk '{print $1}'`
- RIGHT_VOLUME=`setvol 0 | awk '{print $2}'`
-
- This will store the left and right values for the volume.
-
- If you want to set the value of a device, call it like this
-
- setvol 0 50
-
- to set the value of the mixer volume to half of its maximum. If there is a
- left and right channel then this will set both to 50.
-
- To set the two channels of a device individually, call like this,
-
- setvol 0 20 50
-
- to set the value of the left channel to 20 and the right to 50.
-
-
- Bugs
- ====
-
- I don't know of any. If you find any, send me a patch, or at least a good
- description. SetVol should decide if your device is supported or not, and
- should also know if that device is stereo or not. There have been some
- other 'preventative error' methods taken, but there are bound to be some
- bugs.
-
-
- License
- =======
-
- Licensing is GPL... you have all rights to do whatever you want with this.
- I just don't care. :)
-
- For information about GPL goto http://www.gnu.org
-
-
- Thanks to
- =========
-
- Phil Pennock
- Valerica Vatafu
-
- These two guys submitted some cool stuff, in the beginning of 1999. I was
- just VERY slow to get it out. Sorry about that. Some stuff I kept, some I
- tossed.
-
- Regardless, the combination of the two generated some useful stuff. Thanks
- guys. We all appreciate it.
-
-
- Bye
- ===
-
- Take care,
-
- Derek Wyatt
- derek@scar.utoronto.ca
-
-