From: kraxel@xxxxxxxxxxxxxxxxxxxxx (Gerd Knorr) > So xawtv knows it is stereo if it gets "mono|stereo", unless the user has > explicitly switched back to mono. So what is (VIDIOCGTUNER) struct video_channel.flags |= VIDEO_TUNER_STEREO_ON for? Currently I would always switch back to stereo after changing the frequency and always report 'mono|stereo' via VIDIOCGAUDIO. I will use VIDIOCGTUNER flags|=V_T_STEREO_ON to show the user what the station broadcasts... Is this what the interface spec intended? (Some drivers do it this way, some don't.) > The idea is to allow applications to have a menu with all entries, and > the ones which do not work are greyed out. There are cases (stereo station, forced to mono) where I cant ask the hardware about that... When the application switches the frequency and immediately sets to mono, shoud I report mono|stereo (for better grey out...) or nothing? What when there is no station? For my radio it would be somewhat straight forward to report always mono|stereo and work with VIDEO_SOUND_STEREO_ON in case of... This makes VIDIOCGAUDIO constant here (volume is doing the OSS-mixer already)... This solution already reports everything I can get from the hardware via VIDIOCGTUNER!! Many thanks, Robert
