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Author SHA1 Message Date
Thibault Saunier
97eab82ddf aggregator: More fixes around locking when accessing protected private fields 
In some more places we were accessing GstAggregator->segment
and GstAggregator->seqnum without holding the GST_OBJECT_LOCK

https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Thibault Saunier
ae12041f0c aggregator: Make the PAD_LOCK private 
Instead of using the GST_OBJECT_LOCK we should have
a dedicated mutex for the pad as it is also associated
with the mutex on the EVENT_MUTEX on which we wait
in the _chain function of the pad.

The GstAggregatorPad.segment is still protected with the
GST_OBJECT_LOCK.

Remove the gst_aggregator_pad_peak_unlocked method as it does not make
sense anymore with a private lock.

https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Thibault Saunier
5f176b724b aggregator: Hide GstAggregatorPad buffer and EOS fileds 
And add a getter for the EOS.

The user should always use the various getters to access
those fields

https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Olivier Crête
0588222925 aggregator: Document locking of GstAggregatorPrivate members 
Most of them are protected by the object lock, specify
which ones use a different lock.

https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Olivier Crête
fd326639ea aggregator: Document how the segment is protected 
Document that it can only be accessed with the object lock.

https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Olivier Crête
be58999bff aggregator: Protect all latency related members with the object lock 
The locking was not consistent, now consistently use the object lock.

https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Olivier Crête
1d5f3fe084 aggregator: Document locking for gst_aggregator_get_latency_unlocked() 
Renamed it to _unlocked() to make it clear.

https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Olivier Crête
142073cc79 aggregator: Protect the srcpad caps negotiation with the stream lock 
Instead of adding another lock, use the srcpad stream lock, which is already
taken anyway to push out the new caps if needed.

https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Olivier Crête
9add348012 aggregator: Protect the tags with the object lock 
The tags related variables were sometimes protected, sometimes not and
sometimes atomic. Put them all under the object lock.

https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Olivier Crête
25faafaf58 aggregator: Consistenly lock the flow_return state 
Use the object's lock to protect it.

https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Olivier Crête
90f3cb4af0 aggregator: Consistently lock some members 
Some members sometimes used atomic access, sometimes where not locked at
all. Instead consistently use a mutex to protect them, also document
that.

https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Olivier Crête
2b7d4e2404 aggregator: Protect exported pad members with the pad's object lock 
https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Olivier Crête
3217e82791 aggregator: Replace event lock with pad's object lock 
Reduce the number of locks simplify code, what is protects
is exposed, but the lock was not.

Also means adding an _unlocked version of gst_aggregator_pad_steal_buffer().

https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Olivier Crête
6379433a70 aggregator: Protect data with the same mutex as GCond 
Whenever a GCond is used, the safest paradigm is to protect
the variable which change is signalled by the GCond with the same
mutex that the GCond depends on.

https://bugzilla.gnome.org/show_bug.cgi?id=742684
 2017-12-02 15:10:26 +00:00
Nirbheek Chauhan
d33e6a191e aggregator: Nitpick spacing/punctuation in debug logging 2017-12-02 15:10:26 +00:00
Olivier Crête
ec5ff5f308 aggregator: Remove pointless atomic 
It is only modified from the streaming thread
 2017-12-02 15:10:26 +00:00
Olivier Crête
53dd0c650f aggregator: Fix query leak 2017-12-02 15:10:26 +00:00
Sebastian Dröge
4534253145 aggregator: Print jitter from clock waiting in the debug logs 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
f4ad5f0cdf aggregator: don't use iterator when setting flush pending on pads 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
0db6fc999b aggregator: check if pads are ready more efficiently 
No need to use an iterator for this which creates a temporary
structure every time and also involves taking and releasing the
object lock many times in the course of iterating. Not to mention
all that GList handling in gst_aggregator_iterate_sinkpads().
 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
100d860ad2 aggregator: name vfunc arguments consistently 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
50908e60d0 aggregator: add g-i transfer and scope annotations 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
6af6dcb0f7 aggregator: register names of iterate_sinkpads functions with debug system 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
417445c065 aggregator: reduce debug messages for taking/releasing logs to TRACE level 
Don't spam debug log with this stuff.
 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
c5e3fe807a aggregator: move property member into private structure 
Our locking (or lack thereof) while accessing this also
looks generally quite dodgy.
 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
b813456233 aggregator: remove empty dispose function 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
71ec8e2879 aggregator: give private functions namespace prefix 
Especially the GST_DEBUG_FUNCPTR ones.
 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
3793bb8ad9 aggregator: fix up some docs comments in header 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
7302a42ac1 aggregator: remove now-unused system clock member 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
9f417fb08e aggregator: make GstAggregatorPadForeachFunc take an GstAggregatorPad 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
601554df70 aggregator: bring start/stop vfunc semantics in line with other baseclasses 
Sub-class should not have to chain up to GstAggregator's start/stop
vfuncs, same as in GstBaseSrc, GstBaseSink, GstBaseTransform etc.
 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
a7e2a01098 aggregator: remove pointless GST_DEBUG_FUNCPTR 
Not useful for GObject vfuncs.
 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
760d3c5611 aggregator: remove duplicate pad parent_class variable 
G_DEFINE_TYPE already provides one, just need to use it.
 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
85171e3512 aggregator: add _CAST() variants for cast macros 2017-12-02 15:10:26 +00:00
Tim-Philipp Müller
5350d8c653 aggregator: make padding larger 
Esp. the class structures, can't have enough
spare space for virtual functions.
 2017-12-02 15:10:26 +00:00
Nirbheek Chauhan
ced334d397 aggregator: Log to the pad instead of the element 
More correct way of doing the same thing as before
 2017-12-02 15:10:26 +00:00
Sebastian Dröge
8da3d1e596 aggregator: Make sure that the minimum latencies are never GST_CLOCK_TIME_NONE 2017-12-02 15:10:26 +00:00
Sebastian Dröge
4846f06b41 aggregator: Wait for the minimum latency, not the maximum 
The minimum latency is the latency we have to wait at least
to guarantee that all upstreams have produced data. The maximum
latency has no meaning like that and shouldn't be used for waiting.
 2017-12-02 15:10:26 +00:00
Nirbheek Chauhan
d18b6de2e6 aggregator: Clamp the min latency at the max if it's greater 2017-12-02 15:10:26 +00:00
Nirbheek Chauhan
b49805a840 aggregator: Print the sinkpad name while logging latency queries 
Very useful while debugging.
 2017-12-02 15:10:26 +00:00
Nirbheek Chauhan
bbde713640 aggregator: Take the stream lock when iterating sink pads 
When iterating sink pads to collect some data, we should take the stream lock so
we don't get stale data and possibly deadlock because of that. This fixes
a definitive deadlock in _wait_and_check() that manifests with high max
latencies in a live pipeline, and fixes other possible race conditions.
 2017-12-02 15:10:26 +00:00
Sebastian Dröge
9bac89113e aggregator: Don't leak flush-start events 2017-12-02 15:10:26 +00:00
Sebastian Dröge
f2814fa5e3 aggregator: Also change the default latency to 0, not just the minimum 2017-12-02 15:10:26 +00:00
Sebastian Dröge
6697f1521a aggregator: Fix docs and default value of the latency property 2017-12-02 15:10:26 +00:00
Sebastian Dröge
4c477549d2 aggregator: Also include the subclass latency in the result of the latency query 2017-12-02 15:10:26 +00:00
Sebastian Dröge
5caf89da37 aggregator: Post a latency message if the value of the latency property changes 2017-12-02 15:10:26 +00:00
Sebastian Dröge
7240852e55 aggregator: Wake up the src thread after handling a latency query 
Due to changed latencies or changed live-ness we might have to
adjust if we wait on a deadline at all and how long.
 2017-12-02 15:10:26 +00:00
Sebastian Dröge
a20863a7ec aggregator: Don't count the number of times we need to wake up but instead check all conditions for waiting again 
This simplifies the code and also makes sure that we don't forget to check all
conditions for waiting.

Also fix a potential deadlock caused by not checking if we're actually still
running before starting to wait.
 2017-12-02 15:10:26 +00:00
Sebastian Dröge
b1dcc7efb0 aggregator: Add function to allow subclasses to set their own latency 
For audiomixer this is one blocksize, for videoaggregator this should
be the duration of one output frame.
 2017-12-02 15:10:26 +00:00
Sebastian Dröge
435a477f63 aggregator: Add a timeout parameter to ::aggregate() 
When this is TRUE, we really have to produce output. This happens
in live mixing mode when we have to output something for the current
time, no matter if we have enough input or not.
 2017-12-02 15:10:26 +00:00