Commit graph

106 commits

Author SHA1 Message Date
Aaron Boxer
6d3429af34 documentation: fixed a heap o' typos 2019-11-05 09:11:25 -05:00
Thibault Saunier
78022a6e0c docs: Port all docstring to gtk-doc markdown 2017-04-12 12:57:57 -03:00
Vineeth TM
8cdfb13658 bad: use new gst_element_class_add_static_pad_template()
https://bugzilla.gnome.org/show_bug.cgi?id=763081
2016-03-24 14:56:51 +02:00
Anders Jonsson
3fb2222470 camerabin2: Fix string typo
https://bugzilla.gnome.org/show_bug.cgi?id=753241
2015-08-05 09:15:07 -04:00
Thiago Santos
f9f6bbf4f5 wrappercamerabinsrc: handle when source creation fail
Remember to set the source to NULL state as adding it to the pipeline
will set it to the READY state.
2015-05-01 19:45:00 -03:00
Thiago Santos
fc4f95bb7c wrappercamerabinsrc: fix element linking order
Video source should be linked to videocrop and not to
videoconvert as it is done in the main linking path
2015-05-01 19:44:40 -03:00
Thiago Santos
2690cd33ce wrappercamerabinsrc: remove unused code
The structure is created and never used anymore. Remove it.
2015-04-27 21:14:09 -03:00
Thiago Santos
5e0e02553d wrappercamerabinsrc: use digitalzoom element
Replace videocrop ! videoscale ! capsfilter with the digitalzoom
bin that has the same pipeline internally and already updates
the capsfilter automatically when caps change, removing this code
from wrappercamerabinsrc and making it cleaner.
2015-04-27 21:14:09 -03:00
Thiago Santos
c6f4e4cfd8 wrappercamerabinsrc: Rework cropping for zoom and dimension reduction
wrappercamerabinsrc has a videocrop element to be used for
zooming and for cropping when input caps is different when used
with the GstPhotography interface. The zooming part needs
the following elements:

capsfilter ! videocrop ! videoscale ! capsfilter

The capsfilters should always have the same caps to ensure the
zooming is done and preserves dimensions, unless when it is needed
to do more cropping due to input dimensions those caps
need to be modified accordingly to preserve the output dimensions.

This, however, makes it hard to get caps negotiation to work properly
as we need to have different caps in the capsfilters to account for
the extra cropping needed. It could be simple for fixed caps but it
gets tricky with unfixed ones.

To solve this, this patch splits the zooming and dimension reduction
cropping into 2 separate videocrop elements. The first one does
the dimension cropping, which is only needed when the GstPhotography
API is used and the source provides a caps that is different than
what is requested, while the second is dedicated to zoom crop only.

The first part of the pipeline goes from:

src ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter

to

src ! videocrop ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter

It might add an extra overhead in the image capture as the image might need
to be cropped twice but this can be solved by enabling videocrop to use
crop metas so only the later one does the real cropping.

It also makes the code a bit simpler.
2015-04-24 15:12:47 -03:00
Thiago Santos
524e536a91 wrappercamerabinsrc: remove obsolete comment
This is already handled in another place and doesn't make sense
in the function context anymore
2015-04-24 15:12:47 -03:00
Thiago Santos
7b834cb0b3 wrappercamerabinsrc: error out if source fails to prepare for capture
Post an error when preparing the image capture through photography
interface fails
2015-04-24 15:12:46 -03:00
Thiago Santos
0c04f2f0ff wrappercamerabinsrc: intersect instead of compare for equality
Intersect is enough to check if the requested caps are compatible
with what the source is going to provide. Equality will be too strict.
2015-04-24 15:12:46 -03:00
Thiago Santos
af1dda2ecd wrappercamerabinsrc: fix typo 2015-04-24 15:12:46 -03:00
Thiago Santos
70193761b8 wrappercamerabinsrc: Reset zoom element caps to go to viewfinder mode
Avoids not-negotiated failures related to using image capture caps
still when adjusting to go back to viewfinder.
2015-04-21 10:00:44 -03:00
Thiago Santos
ef5b7ca93e wrappercamerabinsrc: fix leak of drain query
gst_pad_peer_query doesn't take ownership of the query object
2015-04-21 10:00:44 -03:00
Thiago Santos
b74770bd05 wrappercamerabinsrc: Refactor internal pipeline
Remove tee and output-selector and just link the source
pad to the outputs we want as needed.

The way we need to prioritize caps negotiation and allocation
queries depending on the mode enabled is too custom to be
handled using tee and output-selector.
This provides more flexibility and doesn't get in the way of proper
handling of negotiation and allocation queries.
2015-04-21 10:00:44 -03:00
Thiago Santos
5a1c73a105 wrappercamerabinsrc: remove unused attribute and related pad probe
The variable was never set to true and can be removed along
with the probe in which it used to act
2015-04-10 16:23:25 -03:00
Thiago Santos
5c20c2e211 wrappercamerabinsrc: fix pad leak
Only get the pad if it is really going to be used to avoid
leaking it
2015-03-14 18:29:28 +00:00
Oleksij Rempel
e8a3973b8f camerabin2: check negotiated caps avoid reseting of the pipe
To avoid useless renegotiation of the pipe we can check for
negotiated caps on src_filter and compare it with requested
filter. If the caps intersect, avoid restart.

Signed-off-by: Oleksij Rempel <bug-track@fisher-privat.net>

https://bugzilla.gnome.org/show_bug.cgi?id=672610
2015-03-04 07:56:51 -03:00
Thiago Santos
04e2a38ae3 wrappercamerabinsrc: fix deadlock with pad object lock
The image capture mutex and the pad object lock would cause a race
if the pad query was made right when the image probe was running.

The image probe needs the capture mutex and the querying would need
the pad object lock.
2015-01-05 21:33:47 -03:00
Thiago Santos
42b510fd1b wrappercamerabinsrc: simplify weird if/else clause
It is not an if/else situation but an if error abort otherwise
just continue. Remove else to make it more readable
2015-01-05 17:59:08 -03:00
Thiago Santos
882018e6dd wrappercamerabinsrc: do not set source state with lock
It might be racy with the image probe thread as it uses the capture
mutex just like the start-capture handler from camerabin. The
start-capture would be waiting for the source's streaming thread
to stop to be able to set the source state to ready while the
probe would be blocked waiting to acquire the capture mutex.
It causes a deadlock.
2014-12-26 23:07:39 -03:00
Thiago Santos
6fa077f465 wrappercamerabinsrc: use the drain query instead of flush
The flush might clear any pending captures that are still in
queues being processed while the drain query will wait for those
to be properly done
2014-12-26 23:07:39 -03:00
Vineeth T M
14acb6fb37 gst: remove unnecessary GLIB_DISABLE_DEPRECATION_WARNINGS
There are unnecessary definitions for disabling deprecation warnings.
Since GLIB_DISABLE_DEPRECATION_WARNINGS is not needed anymore in these files,
removing the same.

https://bugzilla.gnome.org/show_bug.cgi?id=737559
2014-10-02 10:51:35 +03:00
Sanjay NM
b041deb2fa camerabin2: removed redundant initialization
https://bugzilla.gnome.org/show_bug.cgi?id=736853
2014-09-18 12:34:39 +03:00
Sebastian Rasmussen
5d1fedd18e wrappercamerabinsrc: Unref elements after usage
gst_bin_get_by_name() and gst_bin_get_by_interface() both return
references to elements that need to be unreferenced after usage.

https://bugzilla.gnome.org/show_bug.cgi?id=734524
2014-08-10 14:17:55 +01:00
Thiago Santos
a70764df5a wrappercamerabinsrc: do not give references to probes
They are kept until the probes are removed but they will never be
removed as the refcount of the element won't get to 0 because the
probes own references (cyclic refs). As the probes should only be
running as long as the element is running there is no need to
secure a ref for them.

Removes 3 leaked refs of wrappercamerabinsrc
2014-07-26 13:27:51 -03:00
Thiago Santos
34b90db967 wrappercamerabinsrc: unref request pads
Do not forget to unref output-selector requested pads
2014-07-26 12:38:42 -03:00
Thiago Santos
65676a2f15 wrappercamerabinsrc: only flush buffers if renegotiation is needed
This avoid extra overhead when taking sequential pictures that woudln't
need renegotiation
2014-07-23 13:58:26 -03:00
Thiago Santos
19d5be4c3a camerabin: handle EOS on the pipeline
Make camerabin handle EOS to the pipeline to allow standard pipeline
close where an EOS is sent to the whole pipeline before setting it to NULL.
2014-07-23 13:58:26 -03:00
Thiago Santos
b39c01baa1 wrappercamerabinsrc: set src to ready when there are no pending buffers
Setting to ready will block waiting for buffers to be reclaimed, so flush
before setting to null to make sure no buffers are pending

https://bugzilla.gnome.org/show_bug.cgi?id=733072
2014-07-17 10:06:09 -03:00
Nicolas Dufresne
362951b9ec wrappercamerabinsrc: Fix caps filter caps proxying
The notify signal is triggered when caps is changed. But instead of
proxying the fixed caps, we query for the caps. Hence, when we go to
READY state, we endup setting template caps on the proxied caps
filter instead of NULL, which leads to negoitation failure. Correctly
proxy NULL caps if this is the new caps. Fixes not negotiated error
when running in cheese. Also fix a leak of caps string in one of the
trace.

https://bugzilla.gnome.org/show_bug.cgi?id=732741
2014-07-11 11:05:08 -04:00
Nicolas Dufresne
5e4e572335 camerabin2: Flush downstream after setting src to READY
v4l2src requires all buffers to come back in order to cleanly stop
streaming. Flushing the pipline should force all buffers to come
back.

https://bugzilla.gnome.org/show_bug.cgi?id=732741
2014-07-10 18:34:21 -04:00
Thiago Santos
cfda1aafa3 wrappercamerabinsrc: stop source to do internal reconfiguration safely
In order to be able to change the caps on multiple capsfilters the
source element needs to be stopped, otherwise it will get a few
reconfigure events and might try to renegotiate while the bin
is still transitioning its caps, leading to a not-negotiated failure
and the image capture won't happen because the source will be
unusable.

The solution is to keep the source in paused while the caps are being
changed in the bin, and then bring the element back to playing once
it is done. Unfortunately this increases the image capture latency,
but it should always work.

A possible improvement to reduce the latency is to add another signal
to be called before 'start-capture': 'prepare-capture'. At this step
the camera source should set all caps it needs and get the source
ready for doing the capture as soon as 'start-capture' is called.
This can be done on a future commit
2014-02-04 14:17:26 -03:00
Hans de Goede
28e64d1031 wrappercamerabinsrc: Add video-source-filter during construction
By adding the video-source-filter during construction time, rather then
patching it in later (*), we can greatly reduce the amount of caps involved
in negotation, speeding up pipeline creation.

I wrote this while working on speeding up the startup of cheese. My cheese
has been modified to add a capsfilter, filtering for only the configured
resolution, with that cheese patch + this patch, the pipeline creation time
goes from aprox 1.1 seconds to aprox 350ms. This is with a Logitech 9000
pro camera, which supports lots of different resolutions at many different
framerates per resolution, causing a caps "explosion" if not filtered.

*) Note the code for this is left in, as it is still necessary if the
video-source-filter is changed between a stop + re-start.

https://bugzilla.gnome.org/show_bug.cgi?id=701953
2013-06-11 12:47:53 +02:00
Hans de Goede
8dc7fae455 wrappercamerabinsrc: Don't unset the video-source property on pipeline start
check_and_replace_src() was setting self->app_vid_src to NULL, which
means that an app setting the video-source property, and then starting,
stopping and re-starting the pipeline (ie to make changes to the
video-source-filter property) would after the restart no longer have
a video-source.

This patch fixes this by making gst_camerabin_setup_default_element return a
ref to the passed in user_element, rather then returning the user_element as
is, so that that ref can be passed on to the bin, and the app_vid_src ref
stays valid.

https://bugzilla.gnome.org/show_bug.cgi?id=701915
2013-06-10 16:16:29 +02:00
Tim-Philipp Müller
9e1b75fda3 Fix FSF address
https://bugzilla.gnome.org/show_bug.cgi?id=687520
2012-11-04 00:09:59 +00:00
Tim-Philipp Müller
32ba17cd0f Use gst_element_class_set_static_metadata()
where possible. Avoids some string copies. Also re-indent
some stuff. Also some indent fixes here and there.
2012-10-17 17:46:34 +01:00
Thiago Santos
8c8d1a0b6b wrappercamerabinsrc: change video-source if the user requested
When going from null to ready, check if the user requested to
use a new source and replace the current one.

Fixes #681562
2012-09-28 00:13:32 -03:00
Thiago Santos
efd14946fd camerabin: use correct element name when replacing the video filter
The name was updated on the 0.10 -> 1.0 transition, but the
gst_bin_remove was still using the old name, causing an assertion
when replacing video-source-filter

https://bugzilla.gnome.org/show_bug.cgi?id=681564
2012-09-27 19:42:02 -03:00
Mark Nauwelaerts
578861abea replace gst_element_class_set_details_simple with gst_element_class_set_metadata 2012-09-14 17:27:49 +02:00
Thiago Santos
cc130a2fea camerabin: no need to send extra reconfigure
Setting capsfilters already sends reconfigure events when a new
caps is set, no need to resend them.
2012-08-29 22:05:04 -03:00
Thiago Santos
9fd555c3d0 wrappercamerabinsrc: rework video recording eos push
Push EOS outside of wrappercamerabinsrc so that none of the
internal elements gets its pads into eos state, preventing any
further data from passing
2012-08-29 15:45:05 -03:00
Robert Swain
955e50449e wrappercamerabinsrc: Save image/video reconfiguration until capturing
Add a src pad event handler function that filters reconfigure events to
trigger the renegotiation code paths in the mode-specific start-capture
phase.

This is to work towards fixing unit tests but more work is needed.
2012-08-02 22:46:21 +02:00
Thiago Santos
0a831613a8 camerabin: update preview buffer pushing
need to pass a GstSample to the utilitary preview buffer post functions
as a GstBuffer doesn't have caps anymore. The GstSample has the GstCaps
and it is used to inform the preview's pipeline about the format of the
input, before it gets converted to the user's requested output format.
2012-07-29 00:53:29 -03:00
Lasse Laukkanen
8fd2fc662a photography: Add GstPhotography prefix and fix spelling colour->color
https://bugzilla.gnome.org/show_bug.cgi?id=622482
2012-07-11 00:10:55 +01:00
Raimo Järvi
93ad7a4d06 Fix printf format compiler warnings on mingw-w64
https://bugzilla.gnome.org/show_bug.cgi?id=675520
2012-05-05 19:45:42 +01:00
Thiago Santos
133c9ef6be camerabin: remove unnecessary code 2012-05-04 19:54:51 -03:00
Thiago Santos
acc48b7833 camerabin: improve image capture debug 2012-05-04 19:54:51 -03:00
Youness Alaoui
d3303121c8 basecamerabin: Do not set the pad templates in the base class.
It is best to let the subclass define the pad templates, this would
allow the subclass to decide which caps the pads should have.
2012-05-04 19:50:52 -03:00