Hi Tanu, On Sat, Feb 26, 2011 at 2:07 AM, Tanu Kaskinen <tanuk at iki.fi> wrote: > 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. Yes, this correct. >That makes it impossible to have > two verbs (or is it verb+modifier in UCM speak?) active at the same time > on one card. > A modifier is a complement to the verb, there are linked e.g you can not set a modifier if the corresponding verb has not been set. A modifier is like an extension of the verb. > 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? > You can find some info at http://www.slimlogic.co.uk/?p=40, the link to the sample files is not working but It will be fixed asap. >> 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? > A verb is an audio configuration for a determined use case, so it is mainly a group of ALSA kcontrols plus some useful information to configure the audio when a stream is opened. Lets say that you want to listen music in cardX, you need to set the following controls in order to configure your hardware cset name='Handsfree Playback Volume' 15 cset name='HF Left Playback' 1 cset name='HF Right Playback' 1 cset name='DL2 Mixer Multimedia' 1 cset name='DL2 Media Playback Volume' 130 you want also specify what PCM will be used for listening music PlaybackPCM "hw:0" you know that you can use two devices with this configuration, headset and handsfree then you have: SectionDevice"Headset".0 SectionDevice."Headphones".0 Also, it is posible that a tone be played simultaneously so you will need to set two more controls, so you have modifier of the use case. cset name='DL2 Mixer Tones' 1 cset name='DL2 Tones Playback Volume' 130 All this info will form a verb e.g "HiFi" I hope I'm providing a good example, otherwise let me know. Regards, Margarita > -- > Tanu > > _______________________________________________ > pulseaudio-discuss mailing list > pulseaudio-discuss at mail.0pointer.de > https://tango.0pointer.de/mailman/listinfo/pulseaudio-discuss >
