> On March 14, 2011, 7:06 p.m., Diego Casella wrote: > > Ok, sorry again for my late reply :( > > Services are working great, however, I think you should refactor the way > > the 'mixer' DataEngine works, because it doesn't completely performs what > > it is supposed to. > > Let me explain better: when you invoke the "mixer" DataEngine, you get only > > the audio cards names, and nothing more. You have to query() the > > DataEngine, passing one of those names, to receive further infos about the > > specific control of that audio card (this is what I, and I think other > > people does, expect when using this DataEngine). > > And this is kinda bad because, since the DataEngine doesn't automatically > > updates when the volume changes level/state (see my previous comment), I > > have to call a query() every N milliseconds and then, for each control, > > check is something has changed and do a manual update of the plasmoid if > > needed. > > Long story short: instead of returning a "Mixers" datasource, with key set > > to "Mixers" again, you should return a datasource with all the MIXER_ID's > > and, for each of them, all their detailed infos (volume and mute state > > included), so we can get all we need in one shot :) > > (You could run "plasmaengineexplorer" and watch a couple of engines, such > > as 'org.kde.activities', 'hotplug' or 'tasks' to see what I mean) > > > > Note that this will fix also the update() issue because, with the current > > implementation, the plasmoid won't update unless the value of one of the > > "Mixers" keys changes (since it contains only the audio card names, it > > means we will be notified of changes only if an audio card has been > > plugged/removed). > > > > Anyways, these are my two cent: Aaron, what do you think about it? > > Igor Poboiko wrote: > I thought that the 'dataUpdated' signal is emitted every time data > changes (even from inside the dataengine - in our case, I update the > mute/volume by DBus signals from inside the dataengine, and it updates > automatically in plasmaengineexplorer), and there is no need to poll the > dataengine. > The other problem is that actually the plasmoid needs information only > about few controls (one or a bit more sliders in plasmoid). So is there a > need to set ALL the controls (by default)? > And again, what is the difference between adding these sources by default > and querying it, for example, on plasmoid start? I guess I misunderstood > something, but don't you anyway need to poll these sources to get all > changing data? > And one more issue - there are three types of datasources: one basic > (called "Mixers", provides info about available Mixers/soundcards), some for > mixers/soundcards (which provides information about its controls) and some > for controls (which provides information about all its state - volume level, > mute, etc). Should I add all these sources? And should I add it automatically > add all sources for plugged devices-sources? > > Huh, I asked so many questions.. The things you are talking about are > easy-to-fix, I maybe just don't understand correctly what you need :)
Err, I was referencing the controls with the same index of the audio card ( i.e. 'ALSA::HDA_Intel:1' and thus 'Master:1', instead of 'Master:0'), my bad :( So, forget what I said :) Anyways, one more observation: if we want to provide a complete replacement of the old KMix applet, the plasmoid should be able to provide a 'widget' to select/change which channel we are currently operating with (master, pcm, speakers ..). In other words, we need a Plasma Service to change the current master channel, and one more entry in the dataengine to identify which channel is currently being controlled. - Diego ----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: http://svn.reviewboard.kde.org/r/6587/#review9984 ----------------------------------------------------------- On March 8, 2011, 7:01 p.m., Igor Poboiko wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > http://svn.reviewboard.kde.org/r/6587/ > ----------------------------------------------------------- > > (Updated March 8, 2011, 7:01 p.m.) > > > Review request for Plasma and Diego Casella. > > > Summary > ------- > > This patch reworks KMix DBus API and adds a plasma dataengine+service as a > frontend to information provided by DBus. > New DBus structure is: > - /Mixers > used to get some global information, such as available mixers list and global > master mixer > - /Mixers/MIXER_ID > used to get information about mixer with id=MIXER_ID. It provides such > information as list of available controls, name of this mixer, id, etc > - /Mixers/MIXER_ID/CONTROL_ID > used to get and set information about control. Such information as volume > level, mute, name of control, etc. > It also adds a DBus signals which are emitted when new mixer/control appears, > or volume level changes. > It also splits all dbus-related code to separate class, > DBus{KMix,Mixer,Control}Wrapper. > > The Plasma Dataengine: > By default, the only available source is "KMix". It provides information > global information about KMix: is KMix running, and list of available mixers. > (its IDs) > Source for every mixer is called by it's ID (for example, > "ALSA::HDA_Intel:1"). This source provides such information about current > Mixer as: it's readable name, is it opened, its balance and list of available > controls. It also adds basic sources for every control, which provides only > information about its readable name > Sources for controls are called by 'MIXER_ID/CONTROL_ID' (for example, > "ALSA::HDA_Intel:1/Master:0"). If you request this source, it will provide > such information as its readable name, is it muted and its volume level > (which are updates automatically, using DBus signals). > There is a service available for controls sources. It provides such methods > as setVolume() and setMute(). > > It doesn't close bug 171287, but it becomes one step closer to its solving :) > > And, I'm not very familiar with CMake, but it would be great idea to make > plasma part optional. > > > This addresses bug 171287. > https://bugs.kde.org/show_bug.cgi?id=171287 > > > Diffs > ----- > > /trunk/KDE/kdemultimedia/kmix/CMakeLists.txt 1223808 > /trunk/KDE/kdemultimedia/kmix/apps/kmix.cpp 1223808 > /trunk/KDE/kdemultimedia/kmix/core/mixdevice.h 1223808 > /trunk/KDE/kdemultimedia/kmix/core/mixdevice.cpp 1223808 > /trunk/KDE/kdemultimedia/kmix/core/mixer.h 1223808 > /trunk/KDE/kdemultimedia/kmix/core/mixer.cpp 1223808 > /trunk/KDE/kdemultimedia/kmix/dbus/dbuscontrolwrapper.h PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/dbus/dbuscontrolwrapper.cpp PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/dbus/dbusmixerwrapper.h PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/dbus/dbusmixerwrapper.cpp PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/dbus/dbusmixsetwrapper.h PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/dbus/dbusmixsetwrapper.cpp PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/dbus/org.kde.kmix.control.xml PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/dbus/org.kde.kmix.mixer.xml PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/dbus/org.kde.kmix.mixset.xml PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/gui/kmixdockwidget.cpp 1223808 > /trunk/KDE/kdemultimedia/kmix/plasma/CMakeLists.txt PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/plasma/engine/CMakeLists.txt PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/plasma/engine/mixer.operations PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/plasma/engine/mixerengine.h PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/plasma/engine/mixerengine.cpp PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/plasma/engine/mixerservice.h PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/plasma/engine/mixerservice.cpp PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/plasma/engine/plasma-engine-mixer.desktop > PRE-CREATION > /trunk/KDE/kdemultimedia/kmix/tests/CMakeLists.txt 1223808 > > Diff: http://svn.reviewboard.kde.org/r/6587/diff > > > Testing > ------- > > KMix from KDE SC 4.6.0 compiles ok with this patch, and patch applies to > current trunk. > Tested on system with one card and with ALSA backend, so I don't know is > plasma dataengine works correctly with plugging/unplugging mixers (but it > should). > All DBus methods/properties works fine, signals are emitted, volume can be > set using DBus methods. > > Plasma dataengine was tested using plasmaengineexplorer. > All works fine except the one thing. When I request an source for Mixer, it > also adds soucres for controls. And then when I request source for already > available Control, it doesn't react anyhow. But when I set "Update every % > ms", and click "Reqeust", it works fine. If I request a source for control > BEFORE requesting the source for mixer, all works fine too (without setting > "Update every % ms"). I don't know is it a plasmaengineexplorer bug, or my. > > > Thanks, > > Igor > >
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