On Fri, 2011-02-25 at 14:09 -0600, Margarita Olaya wrote: > > Make sense. > > But I am not sure the profiles as defined today in PulseAudio can work > > with modifiers. What we discussed yesterday is that when a profile is > > selected then you would set the UCM verb and know about all possible > > sinks. We would need additional logic to have profile modifiers, or we > > would need extra profiles to represent all possible combinations > > (speech, speech+tone, speech+music, etc). > > The initial idea is to use the UCM data to generate the card profiles, > then when the stream is open PA will use his method to select the > profile and set the verb. e.g when UCM is present: profile = verb. > > In the UCM module the data is store in a proplist per verb, the > proplist has the following info: > PA_PROP_UCM_SINK -> "PlaybackPCM" > PA_PROP_UCM_SOURCE -> "CapturePCM" > PA_PROP_UCM_PLAYBACK_VOLUME -> "PlaybackVolume" > PA_PROP_UCM_PLAYBACK_SWITCH -> "PlaybackSwitch" > PA_PROP_UCM_CAPTURE_VOLUME -> "CaptureVolume" > PA_PROP_UCM_CAPTURE_SWITCH -> "CaptureSwitch" > PA_PROP_UCM_QOS -> "TQ" This means that there's only one sink and source per verb. That's probably ok, but if profile = verb, then this also means that there's only one sink and source per profile. That makes it impossible to have two verbs (or is it verb+modifier in UCM speak?) active at the same time on one card. I don't know what would be the right solution to this problem. I don't know enough about UCM concepts even to try to propose any solution. Is there any documentation? > plus the list of devices e.g headphone, headset and modifiers e.g > "play tone", "play music", etc. I thought verbs were the concept for abstract devices, but apparently I was wrong. Are verbs then stream types? If they are, I think Pulseaudio shouldn't create profiles based on verbs. The profiles should be created based on the devices. You mention headphone and headset as examples of devices - do they also have the same set of properties defined by UCM, that is, playback PCM, capture PCM, and mixer element names for volume and mute? -- Tanu
