On Thu, Feb 23, 2017 at 01:00:10PM +0100, michael bouchaud wrote:
> 2017-02-23 12:37 GMT+01:00 <marcel-hollerb...@t-online.de>:
> 
> > On Thu, Feb 23, 2017 at 12:14:05PM +0100, michael bouchaud wrote:
> > > 2017-02-23 12:01 GMT+01:00 <marcel-hollerb...@t-online.de>:
> > >
> > > > First of all to the technical side:
> > > >
> > > > The commit i pushed removes the code that fetches the volume from pa
> > > > when the drag of a slider is done. Reason for that was that we might
> > > > set a old volume from pulseaudio which is not the last one the user
> > > > dragged to. This can happen bacause the volume is sometimes not up to
> > > > date when we are ending the drag, if pa gives us a new volume that is
> > > > not exact to the one we had when the drag stopped (for example some
> > > > clamping of the volume happened inside pulseaudio) then we are getting
> > > > a callback where we are setting the volume again in the slider. So
> > > > that removing of code does not really remove a feature. We are getting
> > > > notified later about a new volume.
> > > >
> > >
> > > No we aren't notified, because the volume doesn't change. If the volume
> > > is setted to 100 as example and you set it to 105. emix won't change the
> > > volume. The volume is still setted to 100 not 105 ...
> >
> > Well depends on what you are doing. If you are dragging then it should
> > work, if you do it with clicking/keybindings then it will clamp at 100%
> > (BARRIER
> > feature),. Can you elaborate a bit on your usecase?
> >
> 
> you have 100 setted and you drag to 105, as you say BARRIER feature
> won't change the volume. But without this commit the slider stay at 105.

It did before commit dbdf411b488fd4d3f37a26d8cb142b25aba784d6. Reread
the patch, you are removing there a elm_slider_value_set, this ensured
that the value stayed at the value returned by the barrier feature. 

> 
> 
> > >
> > >
> > > >
> > > > On Thu, Feb 23, 2017 at 11:30:18AM +0100, Michaël Bouchaud wrote:
> > > > > Sorry for the miss of comments about this revert.
> > > > >
> > > > > I explained to you, this commit remove something needed to get proper
> > > > value
> > > > > setted to the volume slider.
> > > >
> > > > What is that something ? As explained above, if something else changes
> > > > the volume again, we are getting a callback that results in a update of
> > > > the slider.
> > > >
> > > > > When you have done this revert you have posted this video
> > > > > https://omicron.homeip.net/filedump/mixer_gadget_bug.ogv. We can see
> > > > that
> > > > > emixer works great but not the enlightenment mixer module. Both share
> > > > about
> > > > > 90
> > > > > percents of the code to talk to pulseaudio. So no need to talk with
> > > > > pulseaudio
> > > > > guys, we got something weird into our enlightenment volume mixer. I
> > > > analyze
> > > > > code of two and see the enlightenment module make some alloc to set
> > the
> > > > > volume
> > > > > and emixer doesn't. I fix that in the previous commit
> > > > > (dbdf411b488fd4d3f37a26d8cb142b25aba784d6). I've asked morlenxus to
> > > > check my
> > > > > branch, but he never came back to say if this work. I don't see why
> > this
> > > > > wouldn't working because emixer and enlightenment module are the same
> > > > code
> > > > > now.
> > > >
> > > > While analyzing the code of emixer.c and the module you probebly should
> > > > have noticed that emixer doesnt do exactly THAT. it does not set the
> > > > volume again on drag end. thats NOT done. The only place where this is
> > > > done is on a input volume slider, not the sink or sink input.
> > > > And the bug in the video is clearly happening for sink / sink input.
> > > >
> > >
> > > ??? Sorry but the code is in the revert ...
> > >
> >
> > Your commit (fba185798cf75eaeaba4a95d2be25fb2fea6ef1a) brings back the
> > resetting of the volume on drag stop. Show me where this is done in
> > emixer.c for a slider of the sink volume.
> >
> 
> You remove it ... so :)

yeah. in e_mod_main.c but since you are comparing emixer with the module
you should also have the code you want in somewhere in emixer.c show me
where it is.

> 
> >
> > >
> > > >
> > > > The weirdness part in our enlightenment codebase here is that we
> > > > sometimes get into the state where we are getting updates from
> > > > pulseaudio very slowly (Can be caused by havy work load, etc. etc.).
> > > >
> > >
> > > Absolutely not, we are just rereading the value we have setted to
> > > pulseaudio.
> > > Pulseaudio isn't solicited at this time.
> > >
> >
> > Its not like this, read the pulse code of emix. if we are setting a
> > volume to pulseaudio it just translates it to a pulseaudio volume struct
> > and sets it for that sink. It never attaches the same volume struct to
> > the sink. The volume in the sink is only updated when pa sends the
> > callback of "hey volume has changed" (pulse.c:215)
> >
> 
> yes but the code here don't call any emix or pulse stuff. Just reread the
> value.
> 
>    /* retrieve data */
>    EINA_SAFETY_ON_NULL_RETURN(mixer_context->sink_default);
>    Emix_Sink *s = (Emix_Sink *)mixer_context->sink_default;
>    /* Read it */
>    int val = s->volume.volumes[0];
>    /* Set it */
>    elm_slider_value_set(obj, val);
> 
> Please if I'm wrong, spot me where we call pulse stuff.

No it does not. s->volume.volumes[0] is still the old last value known
from pulseaudio. Not the value we have setted. And this is bad and can
result in the bug you can see in the video.

> 
> >
> > But now, lets assume you are right. That means that we are setting EXACTLY
> > the same value we have just gotten from our slider, back to our slider.
> > Why is that needed?
> >
> 
> To be sure we display the correct value setted to pulse (BARRIER feature
> could not change the volume or set it to a different value).
> 
> If you want to see why we need this. Open emixer and move the
> enlightenment module slider in different value. You will see we don't get
> the same value on both in some case.
>
> 
> >
> > >
> > > >
> > > > > And more important, not getting this commit into our code just hidde
> > us
> > > > the
> > > > > bug
> > > > > and give us no chance to spot it.
> > > >
> > > > Thats a part i dont understand :)
> > > >
> > > > >
> > > > >
> > > > > 2017-02-23 9:09 GMT+01:00 Marcel Hollerbach <
> > > > marcel-hollerb...@t-online.de>:
> > > > >
> > > > > > bu5hm4n pushed a commit to branch master.
> > > > > >
> > > > > > http://git.enlightenment.org/core/enlightenment.git/commit/?id=
> > > > > > 9745890a37036091d5dec320fecda7ed4c6bdb6c
> > > > > >
> > > > > > commit 9745890a37036091d5dec320fecda7ed4c6bdb6c
> > > > > > Author: Marcel Hollerbach <marcel-hollerb...@t-online.de>
> > > > > > Date:   Thu Feb 23 09:08:24 2017 +0100
> > > > > >
> > > > > >     Revert "Revert "mixer: do not set back the value from emix
> > once the
> > > > > > drag is finished""
> > > > > >
> > > > > >     This reverts commit fba185798cf75eaeaba4a95d2be25fb2fea6ef1a.
> > > > > >
> > > > > >     There is not even a description why you reverted it. This is a
> > > > bugfix
> > > > > >     that fixed a bug. So talk to me what the issue is, but please
> > stop
> > > > > >     reverting commits silently.
> > > > > > ---
> > > > > >  src/modules/mixer/e_mod_main.c | 11 -----------
> > > > > >  src/modules/mixer/emixer.c     | 13 -------------
> > > > > >  2 files changed, 24 deletions(-)
> > > > > >
> > > > > > diff --git a/src/modules/mixer/e_mod_main.c
> > b/src/modules/mixer/e_mod_
> > > > > > main.c
> > > > > > index ac805cc..2c86915 100644
> > > > > > --- a/src/modules/mixer/e_mod_main.c
> > > > > > +++ b/src/modules/mixer/e_mod_main.c
> > > > > > @@ -481,16 +481,6 @@ _slider_changed_cb(void *data EINA_UNUSED,
> > > > > > Evas_Object *obj,
> > > > > >  }
> > > > > >
> > > > > >  static void
> > > > > > -_slider_drag_stop_cb(void *data EINA_UNUSED, Evas_Object *obj,
> > > > > > -                     void *event EINA_UNUSED)
> > > > > > -{
> > > > > > -   EINA_SAFETY_ON_NULL_RETURN(mixer_context->sink_default);
> > > > > > -   Emix_Sink *s = (Emix_Sink *)mixer_context->sink_default;
> > > > > > -   int val = s->volume.volumes[0];
> > > > > > -   elm_slider_value_set(obj, val);
> > > > > > -}
> > > > > > -
> > > > > > -static void
> > > > > >  _sink_selected_cb(void *data, Evas_Object *obj EINA_UNUSED, void
> > > > > > *event_info EINA_UNUSED)
> > > > > >  {
> > > > > >     Emix_Sink *s = data;
> > > > > > @@ -554,7 +544,6 @@ _popup_new(Instance *inst)
> > > > > >     evas_object_show(slider);
> > > > > >     elm_slider_min_max_set(slider, 0.0, emix_max_volume_get());
> > > > > >     evas_object_smart_callback_add(slider, "changed",
> > > > _slider_changed_cb,
> > > > > > NULL);
> > > > > > -   evas_object_smart_callback_add(slider, "slider,drag,stop",
> > > > > > _slider_drag_stop_cb, NULL);
> > > > > >     elm_slider_value_set(slider, volume);
> > > > > >     elm_box_pack_end(bx, slider);
> > > > > >     evas_object_show(slider);
> > > > > > diff --git a/src/modules/mixer/emixer.c
> > b/src/modules/mixer/emixer.c
> > > > > > index 5cde881..1bcd96c 100644
> > > > > > --- a/src/modules/mixer/emixer.c
> > > > > > +++ b/src/modules/mixer/emixer.c
> > > > > > @@ -49,17 +49,6 @@ _cb_sink_volume_change(void *data,
> > > > > >  }
> > > > > >
> > > > > >  static void
> > > > > > -_cb_sink_volume_drag_stop(void *data,
> > > > > > -                          Evas_Object *obj,
> > > > > > -                          void *event EINA_UNUSED)
> > > > > > -{
> > > > > > -   Evas_Object *bxv = data;
> > > > > > -   Emix_Sink *sink = evas_object_data_get(bxv, "sink");
> > > > > > -   int vol = sink->volume.volumes[0];
> > > > > > -   elm_slider_value_set(obj, vol);
> > > > > > -}
> > > > > > -
> > > > > > -static void
> > > > > >  _cb_sink_mute_change(void *data,
> > > > > >                       Evas_Object *obj,
> > > > > >                       void *event_info EINA_UNUSED)
> > > > > > @@ -134,8 +123,6 @@ _emix_sink_add(Emix_Sink *sink)
> > > > > >     elm_box_pack_end(bx, sl);
> > > > > >     evas_object_show(sl);
> > > > > >     evas_object_smart_callback_add(sl, "changed",
> > > > _cb_sink_volume_change,
> > > > > > bxv);
> > > > > > -   evas_object_smart_callback_add(sl, "slider,drag,stop",
> > > > > > -                                  _cb_sink_volume_drag_stop, bxv);
> > > > > >
> > > > > >     ck = elm_check_add(win);
> > > > > >     evas_object_data_set(bxv, "mute", ck);
> > > > > >
> > > > > > --
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > > --
> > > > > Michaël Bouchaud (yoz) <y...@efl.so>
> > > > > ------------------------------------------------------------
> > > > ------------------
> > > > > Check out the vibrant tech community on one of the world's most
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> > > > > _______________________________________________
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> > > >
> > > > ------------------------------------------------------------
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> > > >
> > >
> > >
> > >
> > > --
> > > Michaël Bouchaud
> > > ------------------------------------------------------------
> > ------------------
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> >
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> 
> 
> 
> -- 
> Michaël Bouchaud
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
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