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376708b586
Fix broken volume level changing and left/right speakers balance level changing. Get and set volume level value for all available output channels instead of only the 1st channel (available in MIXERCONTROLDETAILS.cChannels member), so other channels don't have a non-set volume values now. This allows to control the volume for all channels. So now the volume control works correctly and hence, the volume level can be properly changed from Sound Properties (mmsys.cpl) and Volume Mixer (sndvol32.exe) as well. Note that the volume level settings changed by user are not saved after reboot yet. We need to save (write) and then load (read) them at next boot from HKLM/System/CurrentControlSet/Control/DeviceClasses/KSCATEGORY_AUDIO/.../DeviceParameters/Mixer/.../* keys inside wdmaud.sys, similarly to as it's done in Windows XP/2003. It can be tested (and is tested sveral times by me and is confirmed) by using MS wdmaud.sys in ReactOS. It writes the values in that key, so the actual volume values are stored there. Another key, HKCU/SOFTWARE/Microsoft/Windows/Applets/Volume Control/, is created and managed by sndvol32.exe instead, so it does not contain the actual values of volume levels. CORE-17976 |
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