Commit graph

48 commits

Author SHA1 Message Date
Mathieu Duponchelle
29c4ecbc25 compositor: improve conversion debugging
https://bugzilla.gnome.org/show_bug.cgi?id=786078
2017-08-10 13:55:59 +02:00
Tim-Philipp Müller
0448cf125b compositor: update disted orc fallback files 2017-08-03 20:14:41 +01:00
Thibault Saunier
806ff70590 compositor: Add support for crossfade blending
Crossfading is a bit more complex than just having two pads with the
right keyframes as the blending is not exactly the same.

The difference is in the way we compute the alpha channel, in the case
of crossfading, we have to compute an additive operation between
the destination and the source (factored by the alpha property of both
the input pad alpha property and the crossfading ratio) basically so
that the crossfade result of 2 opaque frames is also fully opaque at any
time in the crossfading process, avoid bleeding through the layer
blending.

Some rationnal can be found in https://phabricator.freedesktop.org/T7773.

https://bugzilla.gnome.org/show_bug.cgi?id=784827
2017-08-03 12:59:43 -04:00
Matthew Waters
7c53043386 aggregator: add simple support for caps handling
Modelled off the videoaggregator caps handling as that seems the most
mature aggregtor-using implementation that has caps handling there is.

https://bugzilla.gnome.org/show_bug.cgi?id=776931
2017-05-20 16:21:17 +02:00
George Kiagiadakis
39d2526c34 videoaggregator: delay using new caps from a sink pad until the next buffer in the queue is taken
When caps changes while streaming, the new caps was getting processed
immediately in videoaggregator, but the next buffer in the queue that
corresponds to this new caps was not necessarily being used immediately,
which resulted sometimes in using an old buffer with new caps. Of course
there used to be a separate buffer_vinfo for mapping the buffer with its
own caps, but in compositor the GstVideoConverter was still using wrong
info and resulted in invalid reads and corrupt output.

This approach here is more safe. We delay using the new caps
until we actually select the next buffer in the queue for use.
This way we also eliminate the need for buffer_vinfo, since the
pad->info is always in sync with the format of the selected buffer.

https://bugzilla.gnome.org/show_bug.cgi?id=780682
2017-05-20 16:21:16 +02:00
Nicolas Dufresne
4261692187 Remove plugin specific static build option
Static and dynamic plugins now have the same interface. The standard
--enable-static/--enable-shared toggle are sufficient.
2017-05-16 14:05:52 -04:00
Thibault Saunier
78022a6e0c docs: Port all docstring to gtk-doc markdown 2017-04-12 12:57:57 -03:00
Sebastian Dröge
a064590912 glvideomixer/compositor: Correctly error out if calculating DAR fails
CID 1320700
2017-02-28 13:06:41 +02:00
Sebastian Dröge
951ddc6ece compositor: Reject multiview video
Compositor does not support it currently and it needs special support
for handling this correctly, and is rather non-trivial to implement for
all formats.
2016-12-14 15:36:14 +02:00
Nirbheek Chauhan
42af2d66d8 Add support for Meson as alternative/parallel build system
https://github.com/mesonbuild/meson

With contributions from:

Tim-Philipp Müller <tim@centricular.com>
Matej Knopp <matej.knopp@gmail.com>
Jussi Pakkanen <jpakkane@gmail.com> (original port)

Highlights of the features provided are:
* Faster builds on Linux (~40-50% faster)
* The ability to build with MSVC on Windows
* Generate Visual Studio project files
* Generate XCode project files
* Much faster builds on Windows (on-par with Linux)
* Seriously fast configure and building on embedded

... and many more. For more details see:

http://blog.nirbheek.in/2016/05/gstreamer-and-meson-new-hope.html
http://blog.nirbheek.in/2016/07/building-and-developing-gstreamer-using.html

Building with Meson should work on both Linux and Windows, but may
need a few more tweaks on other operating systems.
2016-08-20 11:35:54 +01:00
Edward Hervey
2d778881cb compositor: Check if we get a valid display ratio
As is done everywhere else, and avoids setting bogus values
And remove useless *<val> checks (we always provide valid values and
it's an internal function).

CID #1320700
2016-05-15 14:35:38 +02:00
Sebastian Dröge
619d198a2f compositor: Set blend functions in ::negotiated_caps() instead of ::fixate_caps()
The latter should not change any state but just fixate the caps, while the
former is always called when srcpads caps are decided.

https://bugzilla.gnome.org/show_bug.cgi?id=765324
2016-05-03 16:53:25 +03:00
Reynaldo H. Verdejo Pinochet
58465bc90f Drop usage of 'overlayed' to mean 'overlaid' 2016-04-15 13:39:32 -07:00
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
Matthew Waters
87031b14cb videoaggregator: don't do caps processing that is not overridable
Allows the subclass to completely override the chosen src caps.

This is needed as videoaggregator generally has no idea exactly
what operation is being performed.

- Adds a fixate_caps vfunc for fixation
- Merges gst_video_aggregator_update_converters() into
  gst_videoaggregator_update_src_caps() as we need some of its info
  for proper caps handling.
- Pass the downstream caps to the update_caps vfunc

https://bugzilla.gnome.org/show_bug.cgi?id=756207
2016-01-27 20:36:25 +11:00
Nirbheek Chauhan
cf786a9399 compositor: Ensure all arguments to CLAMP are signed int
If any of the arguments to CLAMP are unsigned integers, the comparison causes
an automatic conversion of the signed int to unsigned, which causes -1 to become
UINT_MAX and get clamped to the high value of the CLAMP instead of 0.

See 716 at http://c0x.coding-guidelines.com/6.3.1.8.html

Also add a test for this.

https://bugzilla.gnome.org/show_bug.cgi?id=754576
2015-09-04 23:32:36 +02:00
Nirbheek Chauhan
db49716c70 compositor: variables in clamp_rectangle() should be signed
x/y/w/h are signed integers. As can be seen in GstCompositorPad.
The prototype for clamp_rectangle was wrong. This commit reverts the change
and fixes the prototype.

This reverts commit bca444ea4a.
2015-08-29 17:27:45 +01:00
Luis de Bethencourt
bca444ea4a compositor: remove check for below zero for unsigned value
CLAMP checks both if value is '< 0' and '> max'. Value will never be a negative
number since it is an unsigned integer. Removing that check and only checking if
it is bigger than max by using MIN().

CID 1320707
2015-08-28 15:21:13 +01:00
Nirbheek Chauhan
9b59bb8630 compositor: Actually use the output resolution for clamping
The obscured check in compositor was using the dimensions of the pad to clamp
the h/w of the pad instead of the output resolution, and was doing an incorrect
calculation to do so. Fix that by simplifying the whole calculation by using
corner coordinates. Also add a test for this bug which fell through the cracks,
and just skip all the obscured tests if the pad's alpha is 0.0.

https://bugzilla.gnome.org/show_bug.cgi?id=754107
2015-08-26 15:03:05 +03:00
Mathieu Duponchelle
53b0808042 compositor: update zorder documentation.
It is not bound between 0 and 10000 anymore.
2015-06-14 23:20:38 +02:00
Sebastian Dröge
0034323f49 Release 1.5.1 2015-06-07 10:55:35 +02:00
Sebastian Dröge
3230e51993 compositor/glvideomixer: Don't calculate PAR/DAR with unset GstVideoInfos
Otherwise we divide by zero.
2015-05-21 16:24:48 +03:00
Sebastian Dröge
41c11e3979 compositor: Fix double assignment 2015-05-21 16:19:08 +03:00
Matthew Waters
d1419afef1 compositor/glvideomixer: fix up par handling
We were using the wrong formula

https://bugzilla.gnome.org/show_bug.cgi?id=749634
2015-05-21 01:04:38 +10:00
Stefan Sauer
4116d11327 Revert "doc: Workaround gtkdoc issue"
This reverts commit ff6c736fe0.

This is fixed by the gtk-doc 1.23 release.

<para> cannot contain <refsect2>:
http://www.docbook.org/tdg/en/html/para.html
http://www.docbook.org/tdg/en/html/refsect2.html
2015-05-18 20:16:32 +02:00
Nicolas Dufresne
ff6c736fe0 doc: Workaround gtkdoc issue
With gtkdoc 1.22, the XML generator fails when a itemizedlist is
followed by a refsect2. Workaround the issue by wrapping the
refsect2 into para.
2015-05-16 23:38:14 -04:00
Matthew Waters
0871b7b43d compositor: implement proper par handling
We were previously failing on different input and output par
2015-05-14 14:58:07 +10:00
Matthew Waters
c519169052 compositor: fix rectangle obscure test to clamp against the output frame size
Rather than one of the input pad video info's.

The test checking this was not constraining the output frame size
to ensure that the out of frame stream was not being displayed.
2015-05-13 17:44:30 +10:00
Nirbheek Chauhan
1c60de8ad7 compositor: Only map the frame from a buffer if it will be used
It's a waste of resources to map it if it won't be converted
or used at all. Since we moved the frame mapping down, we need
to use the GST_VIDEO_INFO accessor macros now in the code above
that instead of the GST_VIDEO_FRAME accessor macros.

https://bugzilla.gnome.org/show_bug.cgi?id=746147
2015-05-01 11:27:55 +01:00
Nirbheek Chauhan
cc2de817ae compositor: use accessor macros for consistency
https://bugzilla.gnome.org/show_bug.cgi?id=746147
2015-05-01 10:57:08 +01:00
Nirbheek Chauhan
e0fd23cb23 compositor: Skip pads that are completely obscured by a higher zorder pad
For each frame, compare the frame boundaries, check if the format contains an
alpha channel, check opacity, and skip the frame if it's going to be completely
overwritten by a higher zorder frame. The check is O(n^2), but that doesn't
matter here because the number of sinkpads is small.

More can be done to avoid needless drawing, but this covers the majority of
cases. See TODOs. Ideally, a reverse painter's algorithm should be used for
optimal drawing, but memcpy during compositing is small compared to the CPU used
for frame conversion on each pad.

https://bugzilla.gnome.org/show_bug.cgi?id=746147
2015-05-01 10:56:32 +01:00
Jan Schmidt
d5ca311a0d compositor: Revert most of previous patch.
The calculation doesn't produce the same results.
Keep just the change to divide alpha by 255 instead of 256,
for slightly better accuracy
2015-03-16 04:00:44 +11:00
Jan Schmidt
badc0438d6 compositor: Fix blending functions
Correctly calculate alpha in a few places by dividing by 255,
not 256.

Fix the argb and bgra blending functions to avoid an off-by-one
error in the calculations, so painting with alpha = 0xff doesn't
ever bleed through from behind
2015-03-16 00:33:23 +11:00
Vincent Penquerc'h
15d51c1f6c compositor: fix illegal memory access in blend function with negative ypos
https://bugzilla.gnome.org/show_bug.cgi?id=741115
2015-01-19 12:38:13 +00:00
Nirbheek Chauhan
29975746dc compositor: Document the zorder pad property from gstvideoaggregator 2015-01-14 19:21:36 +01:00
Sebastian Dröge
ddb535c35d compositor: Don't do any conversions if the pad is completely transparent anyway 2015-01-13 14:54:26 +01:00
Stefan Sauer
4732962c85 gitignore: ignore more files 2015-01-12 22:52:36 +01:00
Nirbheek Chauhan
ad1a25ba37 compositor: Document the pad properties 2014-12-27 11:04:52 +00:00
Sebastian Dröge
ccaf07d53d compositor: Fix memory leak when no buffer is available for a pad currently
CID 1258718
2014-12-18 11:49:09 +01:00
Sebastian Dröge
d4c4af699e 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.
2014-12-17 18:41:41 +01:00
Sebastian Dröge
06013a0a6c compositor: Failure to map a video frame is not just a warning
Also add some warning debug output if mapping a output buffer fails
2014-11-28 10:23:55 +01:00
Sebastian Dröge
2a5aed6966 compositor: Implement rescaling of the input via pad properties
compositor has now the same interface as glvideomixer.
2014-11-27 21:23:04 +01:00
Sebastian Dröge
debf5340bb compositor: Remove unused zorder pad property
It's handled in videoaggregator already.
2014-11-26 12:42:24 +01:00
Sebastian Dröge
7eef9dd0ad compositor: GstVideoMeta is supported just fine, tell upstream about that
Also provide a GstVideoBufferPool to upstream just in case.
2014-11-25 19:03:21 +01:00
Matthew Waters
f0caf04ad6 videoaggregator: operate on caps rather than video info
Otherwise the CapsFeatures will be lost along with the possibility
of multiple output types and formats.

https://bugzilla.gnome.org/show_bug.cgi?id=738129
2014-10-21 01:14:36 +11:00
Edward Hervey
48006e2136 compositor: Fix Makefile CFLAGS/LIBADD ordering
We want to use the libraries from -bad if/when present
2014-06-24 08:01:21 +02:00
Sebastian Dröge
6d3d06c91f Release 1.3.3 2014-06-22 19:22:28 +02:00
Mathieu Duponchelle
11fa711c34 compositor: Add a new compositor based on the new GstVideoAggregator base class
It is a replacement for videomixer with a similare API

Co-Authored by: Thibault Saunier <tsaunier@gnome.org>

https://bugzilla.gnome.org/show_bug.cgi?id=731919
2014-06-20 19:53:33 +02:00