Commit graph

35 commits

Author SHA1 Message Date
Matthew Waters
4fc4ad87d5 query: add a new bitrate query
Allows determining from downstream what the expected bitrate of a stream
may be which is useful in queue2 for setting time based limits when
upstream does not provide timing information.

Implement bitrate query handling in queue2

https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/issues/60
2018-11-07 15:04:14 +00:00
Matthew Waters
c4ccff7861 queue2: avoid ping-pong between 0% and 100% buffering messages
If upstream is pushing buffers larger than our limits, only 1 buffer
is ever in the queue at a time.  Once that single buffer has left the
queue, a 0% buffering message would be posted followed immediately by a
100% buffering message when the next buffer was inserted into the queue
a very short time later.  As per the recommendations, This would result
in the application pausing for a short while causing the appearance of
a short stutter.

The first step of a solution involves not posting a buffering message if
there is still data waiting on the sink pad for insertion into the queue.
This successfully drops the 0% messages from being posted however a
message is still posted on each transition to 100% when the new buffer
arrives resulting in a string of 100% buffering messages.  We silence
these by storing the last posted buffering percentage and only posting a
new message when it is different from or last posted message.
2018-11-07 15:04:14 +00:00
Dimitrios Katsaros
ac7f8b6337 queue2: use GstQueueArray
When using queue2 as a queue it was using GQueue with
individually allocated queue items, so two allocs for
each item. With GstQueueArray we can avoid those.

https://bugzilla.gnome.org/show_bug.cgi?id=796483
2018-06-04 11:10:05 +01:00
Sebastian Dröge
3fab00b46a queue/queue2: Protect against spurious condition variable wakeups
Make sure that we only wake up when we have to flush, or when this
specific query was handled.

https://bugzilla.gnome.org/show_bug.cgi?id=776039
2016-12-13 21:03:54 +02:00
Carlos Rafael Giani
db66cb51b3 queue2: Add higher-resolution low/high-watermark properties
low/high-watermark are of type double, and given in range 0.0-1.0. This
makes it possible to set low/high watermarks with greater resolution,
which is useful with large queue2 max sizes and watermarks like 0.5%.

Also adding a test to check the fill and watermark level behavior.

https://bugzilla.gnome.org/show_bug.cgi?id=769449
2016-08-25 11:54:33 +03:00
Sebastian Dröge
fd253ab1ab Revert "queue2: add overrun signal"
This reverts commit 8ae8b2723d.

It's not used anymore by anything and was considered a bad idea in general.
2016-02-16 19:11:59 +02:00
Jan Schmidt
c1f4920859 queue2: Add use-tags-bitrate property
The use-tags-bitrate property makes queue2 look at
tag events in the stream and extract a bitrate for the
stream to use when calculating a duration for buffers
that don't have one explicitly set.

This lets queue2 sensibly buffer to a time threshold
for any bytestream for which the general bitrate is known.
2016-01-20 03:13:44 +11:00
Duncan Palmer
45fa81e564 queue2: Add the avg-in-rate property.
https://bugzilla.gnome.org/show_bug.cgi?id=733959
2015-11-06 12:32:16 -03:00
Philippe Normand
8ae8b2723d queue2: add overrun signal
Notifies that the queue2 is full, same as queue does

https://bugzilla.gnome.org/show_bug.cgi?id=733959
2015-11-06 12:32:10 -03:00
Thiago Santos
ecf479e3d1 queue2: do not post buffering messages holding the lock
It might cause deadlocks to post messages while holding the queue2
lock. To avoid this a new boolean flag is set whenever a new
buffering percent is found. The message is posted after the lock
is released.

To make sure the buffering messages are posted in the right order, messages
are posted holding another lock. This prevents 2 threads trying to post
messages at the same time.

https://bugzilla.gnome.org/show_bug.cgi?id=736969
2014-09-19 20:35:29 -03:00
Vincent Penquerc'h
f3dd7937a2 queue2: fix event/preroll deadlock differently
The qlock is released between popping a buffer from the queue
and pushing it. When this buffer causes the sink to wait in
preroll, this lets a query see that the queue is empty, and
push the query then wait for it to be serviced. However, this
will not be done till after peroll, and this will thus block.
If upstream was waiting on buffering to reach 100% before
switching to PLAYING, a deadlock would ensue.

This had been fixed recently by failing queries when the
queue2 was buffering, but this happens to break some other
case (playbin on a local http server and matroska), while
this patch works for both.

See https://bugzilla.gnome.org/show_bug.cgi?id=728345
2014-04-16 15:17:04 +01:00
Thiago Santos
dc8f0932fe queue2: remove unused variable
buffering_iteration was never used
2014-03-10 10:10:24 -03:00
Sebastian Dröge
e692993e79 queue2: Add support for serialized queries if using a memory queue 2013-05-24 19:22:22 +02:00
Tim-Philipp Müller
666c8c11c6 Fix FSF address
https://bugzilla.gnome.org/show_bug.cgi?id=687520
2012-11-03 20:44:48 +00:00
Tim-Philipp Müller
14632db174 plugins: sprinkle some more G_GNUC_INTERNAL 2012-07-14 20:05:53 +01:00
Wim Taymans
393c758a1c Merge remote-tracking branch 'origin/0.10'
Conflicts:
	gst/gst.c
	plugins/elements/gstqueue2.c
2012-04-10 12:55:31 +02:00
Wim Taymans
5755e24379 queue2: Keep track of the seeking state
Set the seeking flag right before we send a seek event upstream and discard all
data untill we see a flush-stop again. We need to do this because we activate
the range that we seek to immediately after sending the seek event and it is
possible that we receive data in our chain function from before the seek
which would then be added to the wrong range resulting in data corruption.
2012-04-10 12:44:35 +02:00
Sebastian Dröge
eba7fed1d3 queue2: Fix handling of the new stream-start event 2012-01-27 12:33:56 +01:00
Wim Taymans
252327f87a Update for new gthread API 2012-01-19 09:27:04 +01:00
Tim-Philipp Müller
cc279e6bdd queue2: use statically allocated GQueue 2011-11-03 22:41:13 +00:00
Mark Nauwelaerts
fe1dcbe6fa queue2: adjust input data rate estimation
... being aware of possible initial higher burst rate.
2011-05-16 12:20:51 +02:00
Edward Hervey
8a79c1aa98 queue2: Avoid useless segment_to_running_time() calculations.
* Cache src and sink time
* Use a boolean to known whether src/sink time needs to be recalculated

Avoids 50% of calls to gst_segment_to_running_time()
2010-12-02 19:04:56 +01:00
Sebastian Dröge
e554c7a1f6 queue2: Remove redundant variable
Other than saving an immense amount of 4 bytes of memory this
prevents clang from complaining and keeps the ring buffer state
in a single variable instead of two.
2010-12-02 19:02:08 +01:00
Tim-Philipp Müller
ce35fb79da queue2: don't send seeks beyond the end of the file upstream in pull mode
If downstream is operating in pull mode, short-circuit any pulls beyond
the end of the file and return FLOW_UNEXPECTED immediately instead of
sending a seek beyond the end of the file upstream, since this might
confuse upstream elements (and/or http servers, for example). Fixes
playback of apple trailers in totem and youtube/html5 clips in
WebkitGTK+.

https://bugzilla.gnome.org/show_bug.cgi?id=632977
2010-11-01 12:34:15 +00:00
Robert Swain
9df54eb4ff queue2: extend ring buffer to support ram mode 2010-08-13 16:38:57 +02:00
Wim Taymans
ecd8d3be3a queue2: remove unused variable 2010-08-13 16:38:56 +02:00
Robert Swain
d1809558e5 queue2: ring buffer work in progress 2010-08-13 16:38:51 +02:00
Robert Swain
f093707189 queue2: Add use-ring-buffer and ring-buffer-max-size properties 2010-08-13 16:38:50 +02:00
Wim Taymans
bf1f6969bb queue2: add the buffering percent in BUFFERING query 2010-03-25 17:38:02 +01:00
Wim Taymans
11304c1257 queue2: implement flushing in download buffering
Maintain a separate variable to control src and sink flowreturn values so that
we can unlock the src part without shutting down the sink part.
Add flushing for upstream pull based elements that unblocks our getrange
function. This implements seeking when blocking for more data.
Add some arbitrary threshold before attempting a seek. Add a FIXME for this
because we need to find a sensible threshold based on the input rate.
2010-03-24 19:03:44 +01:00
Wim Taymans
3f4f5fa59d queue2: implement seeking in download mode
When in download mode and the requested offset is too far away, attempt to do a
seek request to fetch the data.
Keep track of all downloaded parts and merge ranges when needed.

Fixes #600877
2010-03-23 19:28:34 +01:00
Wim Taymans
183ffdc126 queue2: add option to remove the temp-file
Add an option to automatically remove the temp file (TRUE by default). This
should make it possible for the application to keep the temp file by other means
than hardlinking or holding an fd open.

Fixes #607739
2010-01-22 17:58:07 +01:00
Stefan Kost
69ea131cfa build: include stdio.h for FILE 2009-11-03 17:30:14 +02:00
Sebastian Dröge
40732dd308 queue2: Integrate into coreplugins 2009-10-29 11:30:11 +01:00
Sebastian Dröge
08e3cb531c queue2: Move struct declarations to a separate header 2009-10-29 11:21:36 +01:00