Commit graph

42 commits

Author SHA1 Message Date
Matthew Waters
3ed0ee95f2 wpesrc: fix possible small deadlock on shutdown
Problem is that unreffing the EGLImage/SHM Buffer while holding the
images_mutex lock may deadlock when a new buffer is advertised and
an attempt is made to lock the images_mutex there.

The advertisement of the new image/buffer is performed in the
WPEContextThread and the blocking dispatch when unreffing wants to run
something on the WPEContextThread however images_mutex has already been
locked by the destructor.

Delay unreffing images/buffers outside of images_mutex and instead just
clear the relevant fields within the lock.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1843>
2021-01-25 09:15:28 +00:00
Matthew Waters
94fea694bc wpesrc: replace object lock usage with a new lock
Using the object lock is problematic for anything that can dispatch to
another thread which is what createWPEView() does inside
gst_wpe_src_start().  Using the object lock there can cause a deadlock.

One example of such a deadlock is when createWPEView is called, but
another (or the same) wpesrc is on the WPEContextThread and e.g. posts a
bus message.  This message propagations takes and releases the object
lock of numerous elements in quick succession for determining various
information about the elements in the bin.  If the object lock is
already held, then the message propagation will block and stall bin
processing (state changes, other messages) and wpe servicing any events.

Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/issues/1490

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1934>
2021-01-12 08:35:10 +00:00
Philippe Normand
3bcb876c29 wpe: Emit load-progress messages
The estimated-load-progress value can be used on application side to display a
progress bar for instance.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1710>
2020-12-09 17:31:51 +00:00
Jan Schmidt
92472ef088 wpe: Don't crash when running on X11.
Don't assume the available EGL display is a wayland display -
instead, check the the GStreamer GL context is EGL, and then
use gst_gl_display_egl_from_gl_display to create a
GstGLDisplayEGL from that, which also adds refcounting
around the underlying EGLDisplay.

Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/issues/1385

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1752>
2020-11-15 15:27:08 +00:00
Philippe Normand
37b7809d18 wpe: Convert launch lines to markdown and move since tag
Seems like the examples don't appear in the generated docs because the Since tag
was badly positioned in the doc blurb.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1706>
2020-10-18 15:17:25 +00:00
Matthew Waters
2f29a4cde6 wpesrc: add some debug logging around WPEView creation/destruction
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1663>
2020-10-13 08:48:05 +00:00
Matthew Waters
da18a8d93d wpesrc: fix a memory leak of the bytes
free the previous GBytes if load-bytes is called multiple times
before view creation.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1663>
2020-10-13 08:48:05 +00:00
Matthew Waters
356fee4dd6 wpesrc: only create webview if not already created
e.g. _decide_allocation() can be called multiple times throughout the
element's lifetime and we only want to create the view once rather than
overwriting.

Fixes a leak of the WPEView under certain circumstances.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1663>
2020-10-13 08:48:05 +00:00
Matthew Waters
b84c8821de wpe: free a previous pending image/shm buffer
Don't blindly overwrite a possibly previously set buffer.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1663>
2020-10-13 08:48:05 +00:00
Matthew Waters
b003387526 wpesrc: fix some caps leaks using the non-GL output
Always chain up to the parent _stop() implementation as it unrefs some
caps (among other things).

Fixes: https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/issues/1409
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1618>
2020-09-30 12:10:44 +00:00
Philippe Normand
2e8927ce93 wpe: Plug event leak
Handled events don't go through the default pad event handler, so they need to
be unreffed in this case.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1568>
2020-09-21 16:39:57 +00:00
Jan Schmidt
6fc7455881 wpesrc: Don't crash if WPE doesn't generate a buffer.
On creating a 2nd wpesrc in a new pipeline in an app that already
has a runnig wpesrc, WPE sometimes doesn't return a buffer on request,
leading to a crash. This commit fixes the crash, but not the underlying
failure - a 2nd wpesrc can still error out instead.

Partially fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/issues/1386

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1568>
2020-09-21 16:39:57 +00:00
Philippe Normand
c3659cd611 wpe: Plug SHM buffer leaks
Fixes #1409

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1568>
2020-09-21 16:39:57 +00:00
Philippe Normand
8ef30a9ce5 wpe: Move webview load waiting to WPEView
As waiting for the load to be finished is specific to the WebView, it should be
done from our WPEView, not from the WPEContextThread. This fixes issues where
multiple wpesrc elements are created in sequence. Without this patch the first
view might receive erroneous buffer notifications.

Fixes #1386

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1568>
2020-09-21 16:39:57 +00:00
Philippe Normand
b707454a5a wpe: Use proper callback for TLS errors signal handling
The load-failed and load-failed-with-tls-errors signals expect distinct callback
signatures.

Fixes #1388

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1566>
2020-09-21 14:11:15 +00:00
Philippe Normand
2caa3e0230 wpe: skip glbasesrc decide_allocation when non-GL caps are negotiated
Checking for GL caps features in gl_start() was done too late in case the parent
class fails to setup a working GL context. The element now determines if GL
support should be enabled during the decide-allocation query handling.

Additionally, when no GL context was found, we need to handle the element
cleanup because in that situation glbasesrc won't call gl_stop.

Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/issues/1376

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1532>
2020-08-24 20:59:50 +00:00
Philippe Normand
314a8c023f wpe: WebView and WebContext handling fixes
The WPEThreaded view is now split in 2 classes:
- WPEContextThread handles the persistent WebKit thread, where all WebKit API
calls should be handled.
- WPEView: is created from the WPEContextThread. It handles the WebView and
maintains the public interface on which wpesrc relies. This is the facade for
the WebView, basically. It takes care of dispatching API calls into the context
thread.

With these fixes it is now possible to create (and reuse) mutlple wpesrc
elements during the application lifetime.

Fixes #1372

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1484>
2020-08-14 09:41:56 +00:00
Mathieu Duponchelle
480ede1aa7 wpesrc: timestamp buffers when working with SHM buffers
GLBaseSrc::fill() will take care of that when dealing with
images, but as we don't chain up when dealing with SHM buffers
this needs to be done in order for GLBaseSrc::get_times() to
work appropriately.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1476>
2020-07-30 08:09:47 +00:00
Mathieu Duponchelle
ad57b8040f wpe: fix ready signalling
Receiving the WEBKIT_LOAD_COMMITTED event doesn't actually
mean we have committed an SHM buffer / image yet.

As this is the condition we are interested in, check it
instead.

Also wrap g_cond_wait in a loop for extra correctness points.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1476>
2020-07-30 08:09:47 +00:00
Philippe Normand
db0ab58e14 wpe: Set documentation caps
As the caps template can vary depending on the WPEBackend-FDO version
found at build time, set a fixed template for the generate documentation.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1392>
2020-07-01 20:31:42 +00:00
Philippe Normand
991bcb22d5 wpe: Add support for SHM without requiring EGLDisplay
The previous version of the SHM export support still required a valid
EGLDisplay. The upcoming WPEBackend-FDO 1.8.x aims to remove this requirement,
hence allowing wpesrc to be used without GPU.
2020-04-13 11:53:16 +00:00
Philippe Normand
26f76dd927 wpe: Enable SHM support for new stable WPEBackend-FDO release
1.5.0 was the development version.
2020-03-23 13:08:46 +00:00
Philippe Normand
49560b4ba8 wpe: Mouse scroll events support 2020-03-23 13:08:46 +00:00
Philippe Normand
9ac798ae5e wpe: Add software rendering support support
Starting from WPEBackend-FDO 1.6.x, software rendering support is available.
This features allows wpesrc to be used on machines without GPU, and/or for
testing purpose. To enable it, set the `LIBGL_ALWAYS_SOFTWARE=true` environment
variable and make sure `video/x-raw, format=BGRA` caps are negotiated by the
wpesrc element.
2020-02-11 16:47:53 +00:00
Niels De Graef
d8f61515d8 Don't pass default GLib marshallers for signals
By passing NULL to `g_signal_new` instead of a marshaller, GLib will
actually internally optimize the signal (if the marshaller is available
in GLib itself) by also setting the valist marshaller. This makes the
signal emission a bit more performant than the regular marshalling,
which still needs to box into `GValue` and call libffi in case of a
generic marshaller.

Note that for custom marshallers, one would use
`g_signal_set_va_marshaller()` with the valist marshaller instead.
2019-11-06 14:27:46 +00:00
Aaron Boxer
6d3429af34 documentation: fixed a heap o' typos 2019-11-05 09:11:25 -05:00
Philippe Normand
b905501c55 wpe: Get rid of un-necessary frameComplete dispatchs
frameComplete() should be called only if there's a new commited frame.
2019-10-24 09:41:10 +00:00
Philippe Normand
0f03e33b03 wpe: Run frameComplete outside of images mutex scope
If the mutex is locked while running frameComplete there is a potential deadlock
bound to happen when we get a new exported images from the backend.

Fixes #1101
2019-10-24 09:41:10 +00:00
Philippe Normand
a40476914d wpesrc: Implement load-bytes action signal 2019-10-17 08:15:44 +00:00
Philippe Normand
d7778e6a7c wpe: Rewrite wpesrc as a glbasesrc subclass
And since it no longer allocates memories itself, this fixes issues with
fakevideosink. A lot of code previously copied from gltestsrc is no longer
needed thanks to the glbasesrc super-class.

Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/issues/1046
2019-10-17 08:15:44 +00:00
Tim-Philipp Müller
f218ec2794 Remove autotools build system 2019-10-14 13:54:27 +01:00
Philippe Normand
3811d13269 wpe: Port for WPEWebKit 2.25.x
When WPEBackend-fdo >= 1.3.0 is detected, the threaded view now relies on the
wpe_fdo_egl_exported_image API instead of the EGLImageKHR-based API which is
going to be deprecated in 2.26. The GLib sources created by the view now use the
default priority as well, the custom priority is no longer required.
2019-06-25 10:16:25 +00:00
Philippe Normand
5105bc8041 wpe: Fix build with -Werror enabled
Including gl.h from WPEThreadedView.h leads to GST_LEVEL_DEFAULT detected as
redefined. The proposed fix is to include config.h from the CPP implementation
file and disable gl.h inclusion in the header, by using forward declarations.
2019-06-05 12:47:16 +01:00
Tim-Philipp Müller
7853700b50 meson: add more plugins to plugins list
Makes sure their path gets added to the uninstalled environment
and makes sure they get included in the docs.
2019-05-30 20:41:57 +02:00
Philippe Normand
2b218da805 wpesrc: Switch to WPEBackend-fdo 1.2.0 2019-03-30 14:02:50 +00:00
Philippe Normand
0b641a4953 wpe: Bump required version to WPEWebKit 2.24
Fixes #929
2019-03-28 18:27:28 +00:00
Philippe Normand
6c228eef59 wpesrc: Register backend activity states 2019-03-20 10:14:51 +00:00
Philippe Normand
22b94a7a84 wpesrc: Always log loaded URI 2019-03-20 10:14:51 +00:00
Philippe Normand
451074a7e0 wpesrc: Implement webview background configuration support 2019-03-20 10:14:51 +00:00
Philippe Normand
c34cd8c5e0 wpesrc: Plug WPE's exportable leak 2019-01-22 11:52:30 +00:00
Philippe Normand
c357e12118 wpe: Add autotools build support 2019-01-22 11:13:13 +00:00
Philippe Normand
5b8935bc77 wpe: Add a source element acting as a Web Browser based on WebKit WPE
The wpe element is used to produce a video texture representing a web page
rendered off-screen by WPE. This element can be used to overlay HTML on top of
another video stream for instance.
2018-12-06 12:38:52 +00:00