I'd like to programmatically set volume in Windows, Mac and Ubuntu using C/C++. Command line also can but C/C++ preferred. Thank you in advance!
+1
A:
For Windows, use the Windows APIs waveOutSetVolume and waveOutGetVolume
Aziz
2009-12-17 10:28:34
+1 Thanks Aziz. Does it have the same effect as adjusting the speaker icon on the Taskbar?
Viet
2009-12-17 13:27:46
+3
A:
Just a hint, In windows the 'philosophy' around volume adjustment has changed between XP and Vista/7. Code that would change the master volume on XP will only change the application specific volume setting in the mixer on Vista and 7.
Here is a good blog post by one of the MS audio dev team regarding this: Larry Osterman's Blog
Here are some codeproject pages that might prove useful:
Also, there are a few powerpoint presentations regarding the new api's here: AMP Summit ppts. The Audio Endpoints in Windows Vista presentation has some good info.
As for OsX and Ubuntu, i have no idea.
YoungPony
2009-12-17 10:37:53
+3
A:
For Linux using ALSA sound system, you can use following command:
amixer set Master 50%
el.pescado
2009-12-17 11:14:24
+1 Thanks! Does it have the same effect as adjusting the speaker icon on the Taskbar? This one does not look like C system call but thanks anyway.
Viet
2009-12-17 13:28:24
It is a shell command, you can execute it with system() or fork()/exec(). And yes, it has the same effect as adjusting taskbar volume control.
el.pescado
2009-12-17 13:38:24
Then you should look into ALSA library (http://www.alsa-project.org/alsa-doc/alsa-lib/group___mixer.html), which isn't very well documented, or peek into amixer sources;)
el.pescado
2009-12-17 14:54:23
A:
Here is an article (with code) about setting the master volume in Vista with C/C++:
Xenu
2010-10-07 14:14:22