Commit graph

1249 commits

Author SHA1 Message Date
Julien Isorce
d0bc54956d glmemory: fix texture leak in _gl_mem_copy
https://bugzilla.gnome.org/show_bug.cgi?id=755456
2017-12-09 19:32:08 +00:00
Matthew Waters
6de7db9a4e gl/dispmanx: fix rendering with recent resize state tracking
557ca6fda5 didn't change to the
necessary gst_gl_window_resize() call for the dispmanx backend.
2017-12-09 19:32:08 +00:00
Matthew Waters
718318ce19 gl/caopengllayer: fix non-existent selector warning
557ca6fda5 introduced the queueResize
call without implementing the selector
2017-12-09 19:32:08 +00:00
Jan Schmidt
6b67fdf2ef glwindow: Fix g_return_val_if_fail in a void function 2017-12-09 19:32:08 +00:00
Matthew Waters
63bbe9406a glwindow: add API to request a resize event on the next draw
- glimagesink needs to be able to resize the viewport on aspect ratio
  changes resulting from either caps changes or 3d output mode changes.
- Performing a glViewport outside the GstGLWindow::resize callback
  will not have the winsys' stack of viewports required to correctly
  place the output frame.

Provide a function to request a resize on the next draw event from the
winsys.

Also track size changes inside the base GstGLWindow class rather
than in each subclass.

https://bugzilla.gnome.org/show_bug.cgi?id=755111
2017-12-09 19:32:08 +00:00
Matthew Waters
a18cdf4781 gl/x11: store the correct dimension from the resize events
small typo s/width/height/
2017-12-09 19:32:08 +00:00
Vineeth T M
6944433677 gl: Fix GError leaks during failures
https://bugzilla.gnome.org/show_bug.cgi?id=755140
2017-12-09 19:32:08 +00:00
Tim-Philipp Müller
990a49fe4f gl: bufferpool take into account video stride alignment requirements
when allocating memory. Fixes crashes with avdec_h265 in the AVX2
code path which requires 32-byte stride alignment, but the
GstAllocationParams only specified a 16-byte alignment.

https://bugzilla.gnome.org/show_bug.cgi?id=754120
2017-12-09 19:32:08 +00:00
Matthew Waters
5adde7f98b gl/api: use public rather than private define
HAVE_IOS is only defined for the build of this module so
attempting to use gstgl in iOS would result in incorrect GL
includes.
Use GST_GL_HAVE_PLATFORM_EAGL instead for choosing the iOS GL
header.
2017-12-09 19:32:08 +00:00
Sebastian Dröge
cd326adacc gl/eagl: Also unbind renderbuffer after setting up framebuffer
https://bugzilla.gnome.org/show_bug.cgi?id=754757
2017-12-09 19:32:08 +00:00
Sebastian Dröge
ae721c54c2 gl/eagl: Don't make context uncurrent just to make it current again in the next line
Also binding the framebuffer again is unnecessary then as it was just bound a
few lines before while the context was current.

https://bugzilla.gnome.org/show_bug.cgi?id=754757
2017-12-09 19:32:08 +00:00
Tim-Philipp Müller
06a1954165 gtk, qt, gl: fix typo in debug and error messages 2017-12-09 19:32:08 +00:00
Sebastian Dröge
3d4f982045 gl/eagl: Unref context after setting a window handle
gst_gl_window_get_context() returns a new reference.

Hopefully fixes https://bugzilla.gnome.org/show_bug.cgi?id=753758
2017-12-09 19:32:08 +00:00
Nicolas Dufresne
d1cece731e gl: Let base transform relay the meta api for us
During allocation query, when this element is not passthrough, it must
relay the overlay compostion meta and it's parameters. Fortunatly, base
transform can do this for us.

https://bugzilla.gnome.org/show_bug.cgi?id=753850
2017-12-09 19:32:08 +00:00
Justin Kim
c8628fc43d glcontext: add specific error message when missing GL_SHADING_LANGUAGE_VERSION
GL_SHADING_LANGUAGE_VERSION was introduced since ES 2.0, but in some
android emulator doesn't support this feature. To prevent confusion for
developer, the error message need to be more clear.

https://bugzilla.gnome.org/show_bug.cgi?id=753905
2017-12-09 19:32:08 +00:00
Matthew Waters
d45e0f807f glbasefilter: only call gl_{stop,start} if the context changed
Removes the redundant GL object creation/deletion on every
decide_allocation call which is being called for every caps change.

Thus reduces the required GL state changes on reconfigure events
which are being sent by glimagesink/xvimagesink
2017-12-09 19:32:08 +00:00
Nicolas Dufresne
edd3c007ea glupload: Recalculate offset and size in raw upload
As we only expose the mapped portion of the frame into the GL
memory object (and not the original padding) we need to
re-calculate the size and offset.
2017-12-09 19:32:08 +00:00
Nicolas Dufresne
9fd57c9a6c gloverlaycompositor: Also disable the blend when done 2017-12-09 19:32:07 +00:00
Nicolas Dufresne
a342d95ca6 glsink: Enable sync meta on pools we offer
As the upload is asynchronous, we need to enable the sync meta to
gain correct rendering. The buffer pool receiver don't know about
that.
2017-12-09 19:32:07 +00:00
Sebastian Dröge
db8bbe067b opengl: Change GLclampd to double
GLclampd does not exist on GLES, only desktop GL.
2017-12-09 19:32:07 +00:00
Martin Kelly
7d314dd2ad opengl: add missing ClearDepth prototype
The ClearDepth call is missing.

https://bugzilla.gnome.org/show_bug.cgi?id=753639
2017-12-09 19:32:07 +00:00
Nicolas Dufresne
f3bd3d0b94 gl: Add opengl_version.h to the list of sources
Adding this private header to the list of sources. We don't want to make
this header public, but we need it in the list of sources otherwise it
won't be included in the tarball. This fixes make distcheck.

This regression was introduced by commit 1a6fe3db
2017-12-09 19:32:07 +00:00
Matthew Waters
3ba30d42a4 gl: use gles2 shaders everywhere
This effectively limits a glfilter subclass to be > GL(ES) 2.0.
rather than a possible GL 1.4.
2017-12-09 19:32:07 +00:00
Matthew Waters
6589c38d1a glcontext/wgl: implement gl3 core profile context selection 2017-12-09 19:32:07 +00:00
Nicolas Dufresne
d576a71e9a gloverlaycompositor: Add shader to convert BGRA/ARGB -> RGBA
Depending on the bytes order we will get BGRA (little) and ARGB (big)
from the composition overlay buffer while our GL code expects RGBA. Add
a fragment shader that do this conversion.

https://bugzilla.gnome.org/show_bug.cgi?id=752842
2017-12-09 19:32:07 +00:00
Matthew Waters
9f9e0e87cf gl/syncmeta: implement synchronisation without glFenceSync
Uses glFinish as that's the best we have for lesser OpenGL versions.
2017-12-09 19:32:07 +00:00
Matthew Waters
2034f78617 context/glx: only use glXCreateContextAttribs for OpenGL 3 contexts
mesa for example when creating a GL 3.1 compatibility context
overrides our context profile selection to create a core context.
2017-12-09 19:32:07 +00:00
Sebastian Dröge
260104e485 glupload: Remove debug output from gst_gl_upload_transform_caps()
We can't know if the GstGLUpload type is initialized at this point already,
and thus our debug category might not be initialized yet... and cause an
assertion here.

As we don't print debug output for any of the other transform functions, let's
defer this problem for now.
2017-12-09 19:32:07 +00:00
Nicolas Dufresne
f8dbf10e9e glupload: Add fixme about using bufferpool for raw
http://bugzilla.gnome.org/show_bug.cgi?id=752937
2017-12-09 19:32:07 +00:00
Nicolas Dufresne
2b2048d601 glupload: Keep input frame mapped as long as needed
When performing a raw upload, we need to keep the raw data mapped as
long as needed.

https://bugzilla.gnome.org/show_bug.cgi?id=752937
2017-12-09 19:32:07 +00:00
Nicolas Dufresne
37cc53d26f Revert "glupload: memcpy on raw data upload"
This reverts commit 82c0189b28.

https://bugzilla.gnome.org/show_bug.cgi?id=752937
2017-12-09 19:32:07 +00:00
Matthew Waters
ab142b2671 glcontext/wgl: fix defenition of gst_gl_context_wgl_new
gstglcontext_wgl.c: In function 'gst_gl_context_wgl_new':
gstglcontext_wgl.c:83:40: error: 'display' undeclared (first use in this function)
2017-12-09 19:32:07 +00:00
Matthew Waters
0ac95e3243 gl/cocoa: fix definition of gst_gl_context_new
gstglcontext_cocoa.m:75:1: error: conflicting types for 'gst_gl_context_cocoa_new'
2017-12-09 19:32:07 +00:00
Matthew Waters
7acca333fe gl/win32: fix definition of gst_gl_window_win32_new 2017-12-09 19:32:07 +00:00
Matthew Waters
70184c52f0 wayland: fail window open if the display is the correct type
Errors out cleanly if a wayland compositor is not running
2017-12-09 19:32:07 +00:00
Matthew Waters
6ccaafc0f3 glwindow: pass display to implementation's _new()
So they have to opportunity to fail if they cannot handle the
display connection.

https://bugzilla.gnome.org/show_bug.cgi?id=752743
2017-12-09 19:32:07 +00:00
Matthew Waters
9587eb477d glcontext: pass display to implentation's _new()
This allows the context to fail creation based on incompatible
display type's. e.g. glx context with an wayland display handle.

https://bugzilla.gnome.org/show_bug.cgi?id=752743
2017-12-09 19:32:06 +00:00
Julien Isorce
738ed418ad gl: support cgl, egl and glx within a same build
On osx, with the same build,
gst-launch-1.0 videotestsrc ! glimagesink works with:

GST_GL_PLATFORM=egl GST_GL_WINDOW=x11 GST_GL_API=gles2
GST_GL_PLATFORM=egl GST_GL_WINDOW=x11 GST_GL_API=opengl

GST_GL_PLATFORM=glx GST_GL_WINDOW=x11 GST_GL_API=opengl

GST_GL_PLATFORM=cgl GST_GL_WINDOW=cocoa GST_GL_API=opengl
GST_GL_PLATFORM=cgl GST_GL_WINDOW=cocoa GST_GL_API=opengl3

https://bugzilla.gnome.org/show_bug.cgi?id=752743
2017-12-09 19:32:06 +00:00
Jan Schmidt
3bacd64bf1 glupload: Check that caps contain desired caps features
Use 'contains' checks instead of equality checks on caps features
to allow for uploading when caps also contain GstVideoOverlayComposition
meta.

https://bugzilla.gnome.org/show_bug.cgi?id=752912
2017-12-09 19:32:06 +00:00
Julien Isorce
ac469a0d28 gl: move GL_NUM_EXTENSIONS definition after gl.h
https://bugzilla.gnome.org/show_bug.cgi?id=752743
2017-12-09 19:32:06 +00:00
Luis de Bethencourt
1eeeadb24e glupload: fix memory leak
GstCapsFeatures need to be freed with gst_caps_features_free() after use.

CID #1312136, CID #1312136
2017-12-09 19:32:06 +00:00
Nicolas Dufresne
df7bcb6ba7 gloverlaycompositor: Keep memory pointer alive
Keep the composition memory pointer alive while it's being
wrapped inside a GstGLMemory object.

https://bugzilla.gnome.org/show_bug.cgi?id=745107
2017-12-09 19:32:06 +00:00
Nicolas Dufresne
8884aeba87 gloverlaycompositor: Pass buffer stride
The overlay pixel buffer stride was not given back
to the GL image.

https://bugzilla.gnome.org/show_bug.cgi?id=745107
2017-12-09 19:32:06 +00:00
Nicolas Dufresne
b0546f9bfa gloverlaycompositor: Hide GstCompsitionOverlay object
This object is only used inside the compositor and does not
need to be expose in libgstgl API.

https://bugzilla.gnome.org/show_bug.cgi?id=745107
2017-12-09 19:32:06 +00:00
Nicolas Dufresne
9caaf9eb63 libgstgl: Makefile style fix 2017-12-09 19:32:06 +00:00
Nicolas Dufresne
1812c19291 composition-overlay: Positions are relative to texture
The coordinate are relative to the texture dimension and not
the window dimension now. There is no need to pass the window
dimension or to update the overlay if the dimension changes.

https://bugzilla.gnome.org/show_bug.cgi?id=745107
2017-12-09 19:32:06 +00:00
Lubosz Sarnecki
8abd2bbe35 gloverlaycompositor: Create own shader object
Make gloverlaycompositor independent of the shader used in the sink.

https://bugzilla.gnome.org/show_bug.cgi?id=745107
2017-12-09 19:32:06 +00:00
Luis de Bethencourt
3199b1b4a8 gloverlaycompositor: for loop initial declarations are only allowed in C99 mode
Fixes compiler warnings
2017-12-09 19:32:06 +00:00
Julien Isorce
f068020645 gl: use gst_gl_display_create_context in more elements.
glbasefilter, glbasemixer and gltestsrc.

https://bugzilla.gnome.org/show_bug.cgi?id=750310
2017-12-09 19:32:06 +00:00
Matthew Waters
11f058b1ca gl/build: fix typo in _HEADERS resulting in installing the wrong file
/usr/include/gstreamer-1.0/gst/gl/gl.h:51:43: fatal error:
    gst/gl/gstgloverlaycompositor.h: No such file or directory
2017-12-09 19:32:06 +00:00
Matthew Waters
41aeadc36e glcolorconvert: add RGB to NV12/NV21 conversion 2017-12-09 19:32:06 +00:00
Lubosz Sarnecki
26e6be8fad glcolorconvert: Apply GstVideoOverlayCompositionMeta buffer to converted buffer
Since glcolorconvert creates a new GstBuffer,
without the GstVideoOverlayCompositionMeta data,
it needs to be copied to not be dropped.

https://bugzilla.gnome.org/show_bug.cgi?id=745107
2017-12-09 19:32:06 +00:00
Lubosz Sarnecki
076d0517c8 glupload: Detect overlay meta buffers correctly
https://bugzilla.gnome.org/show_bug.cgi?id=745107
2017-12-09 19:32:06 +00:00
Lubosz Sarnecki
dc47e6d3c0 glimagesinkbin: Add GstVideoOverlayCompositionMeta caps features
https://bugzilla.gnome.org/show_bug.cgi?id=745107
2017-12-09 19:32:06 +00:00
Lubosz Sarnecki
4d010efea1 gloverlaycompositor: Add GstGLOverlayCompositor class
Manages the GstGLCompositionOverlay objects,
caches already uploaded overlays and draws them.

https://bugzilla.gnome.org/show_bug.cgi?id=745107
2017-12-09 19:32:06 +00:00
Lubosz Sarnecki
170ac41a87 glcompositionoverlay: Add compatibility for GL contexts without glGenVertexArrays
https://bugzilla.gnome.org/show_bug.cgi?id=745107
2017-12-09 19:32:06 +00:00
Lubosz Sarnecki
279c2b07b4 glcompositionoverlay: Add class for managing GstVideoOverlayCompositionOverlay buffers
Add a class to store and manage the OpenGL texture,
vertex buffer and GstVideoOverlayRectangle.
Transforms overlay coordinate space to vertex buffer space with aspect ratios in mind.

= Example Pipelines =

Simple pipeline

gst-launch-1.0 videotestsrc ! \
  textoverlay text="Hello World" font-desc="sans bold 30" ! \
  glimagesink

Display 3 static overlays at different positions

gst-launch-1.0 videotestsrc ! \
  textoverlay text="text1" valignment="top" font-desc="sans bold 30" ! \
  textoverlay text="text2" halignment="right" font-desc="sans bold 30" ! \
  textoverlay text="text3" halignment="left" font-desc="sans bold 30" ! \
  glimagesink

Display subtitle file over testsrc

gst-launch-1.0 videotestsrc ! \
  textoverlay name=foo filesrc location=foo.srt ! subparse ! queue ! foo. foo. ! \
  glimagesink

https://bugzilla.gnome.org/show_bug.cgi?id=745107
2017-12-09 19:32:05 +00:00
Lubosz Sarnecki
eb618aaac7 glupload: Move debug init to top of the file
https://bugzilla.gnome.org/show_bug.cgi?id=745107
2017-12-09 19:32:05 +00:00
Matthew Waters
1b4f99856f glmemory: check for pbo availability before attempting pbo download
https://bugzilla.gnome.org/show_bug.cgi?id=751165
2017-12-09 19:32:05 +00:00
Matthew Waters
66407b9877 glcontext: fix get_current_gl_api on x11/nvidia drivers
They require to get_proc_address some functions through the
platform specific {glX,egl}GetProcAddress rather than the default
GL library symbol lookup.
2017-12-09 19:32:05 +00:00
Matthew Waters
cfa9b94045 glcontext: consolidate get_proc_address function definition
Pass the GstGLAPI directly.
2017-12-09 19:32:05 +00:00
Matthew Waters
3343e2dccd glcontext/glx: try creating a context with the highest version
nvidia drivers return the exact version in glGstString (GL_VERSION)
we request on creation so start with the highest known version and
work our way down.
2017-12-09 19:32:05 +00:00
Matthew Waters
78957c45c2 glcontext: track sharedness with a cookie
The previous approach of traversing the other_context weak ref tree was
1. Less performant
2. Incorrect for context destruction removing a link in the tree

Example of 2:
c1 = context_create (NULL)
c2 = context_create (c1)
c3 = context_create (c2)
context_can_share (c1, c3) == TRUE
context_destroy (c2)
unref (c2)
context_can_share (c1, c3) returns FALSE when it should be TRUE!

This does not remove the restriction that context sharedness can only
be tracked between GstGLContext's.
2017-12-09 19:32:05 +00:00
Matthew Waters
2df7e0f9de glcontext: use the debug object variant for completeness 2017-12-09 19:32:05 +00:00
Matthew Waters
5043800a1d glupload: memcpy on raw data upload
Anything else requires keeping track of the GstVideoFrame mapping
across possible multiple buffers to ensure correct data pointer
usage.
2017-12-09 19:32:05 +00:00
Matthew Waters
841380e022 glbasebuffer: add some debug and zero the data pointers on init 2017-12-09 19:32:05 +00:00
Sebastian Dröge
cff2d74cd4 gl/eagl: Don't call anything synchronously from the main thread
This will deadlock if the main thread is the one who creates the GstGLContext.
All things we call from the main thread should be possible from any thread.

https://bugzilla.gnome.org/show_bug.cgi?id=751101
2017-12-09 19:32:05 +00:00
Matthew Waters
b7a3b54b2a download: only start a download transfer for sysmem caps features 2017-12-09 19:32:05 +00:00
Hyunjun Ko
f67eb2571d glsyncmeta: transform func: return FALSE if not supported or failed
https://bugzilla.gnome.org/show_bug.cgi?id=751778
2017-12-09 19:32:05 +00:00
Matthew Waters
6a7bb242f9 android: add missing egl.h include 2017-12-09 19:32:05 +00:00
Matthew Waters
afcb6aa1da gl: consolidate egl header includes to egl-only headers
They may conflict with other headers.
2017-12-09 19:32:05 +00:00
Julien Isorce
9b1eb32c49 gl: initialize output params to 0 before calling gl functions
The client side API of the Chromium's GPU Process has asserts
in debug mode that check that output params are initialized to 0.
2017-12-09 19:32:05 +00:00
Nicolas Dufresne
b8d3c2d2a5 gl: Don't leak pool if set_config failed 2017-12-09 19:32:05 +00:00
Nicolas Dufresne
79d5bbdc35 glfilter: Don't cache buffer pool
Caching and sharing to multiple element the same pool prevents
renegotiation from passthrough to not passthrough.
2017-12-09 19:32:05 +00:00
Sebastian Dröge
5df0fbfbca Revert "gl/window/x11: don't create our own X11 display"
This reverts commit 5697b6b89b.

https://bugzilla.gnome.org/show_bug.cgi?id=751003
2017-12-09 19:32:05 +00:00
Sebastian Dröge
30e13d6623 Revert "eagl: Don't dispatch_sync() to the main thread if we are on the main thread"
This reverts commit 0bff481011.

It wasn't supposed to be merged and also doesn't fix the problem.
2017-12-09 19:32:05 +00:00
Sebastian Dröge
c02891ba41 eagl: Don't dispatch_sync() to the main thread if we are on the main thread
This will otherwise deadlock.

https://bugzilla.gnome.org/show_bug.cgi?id=751101
2017-12-09 19:32:05 +00:00
John Ludwig
5e0b3b1c10 gl: Include texParameterf in the GL function table
https://bugzilla.gnome.org/show_bug.cgi?id=751228
2017-12-09 19:32:05 +00:00
Julien Isorce
1edc569069 glmemory: fix consistency about pbo availability.
https://bugzilla.gnome.org/show_bug.cgi?id=751165
2017-12-09 19:32:04 +00:00
Julien Isorce
76983d4454 gldisplay: add gst_gl_display_create_context
It also emits a create-context signal so that an application
can provide an external GstGLContext backend.

https://bugzilla.gnome.org/show_bug.cgi?id=750310
2017-12-09 19:32:04 +00:00
Julien Isorce
38a1939ea1 glcontext: move display from priv
https://bugzilla.gnome.org/show_bug.cgi?id=750310
2017-12-09 19:32:04 +00:00
Julien Isorce
cbc3f1242f Revert "glcontext: add gst_gl_context_set_display helper"
This reverts commit 71b8103cbd.
2017-12-09 19:32:04 +00:00
Julien Isorce
e29e67fa6e Revert "gl: add GstGLContextGPUProcess backend"
This reverts commit b377112ee3.
2017-12-09 19:32:04 +00:00
Nicolas Dufresne
2c1d4f4074 glviewconvert: Fix GLES2 compatibility 2017-12-09 19:32:04 +00:00
Nicolas Dufresne
7605b39eea glviewconvert: Fix broken validity check 2017-12-09 19:32:04 +00:00
Jan Schmidt
7b583526e9 gl libs: Add glviewconvert helper object
Add API for a helper object that can convert between different
stereoscopic video representations, and later do filtering
of multiple view streams.

https://bugzilla.gnome.org/show_bug.cgi?id=611157
2017-12-09 19:32:04 +00:00
Matthew Waters
2210ba5d46 glmemory: separate pbo transfer from texture transfers
When supported, the potentially longer pbo upload/download can be
initiated before the texture upload/download, potentially increasing
throughput.
2017-12-09 19:32:04 +00:00
Matthew Waters
900bcea9de glmemory: implement on top of glbasebuffer
Provides convenient access to PBO usage.

Currently texture updates are coupled tightly to data transfers.
2017-12-09 19:32:04 +00:00
Matthew Waters
1e87053475 gl: new glbasebuffer GstMemory object
Provides generic handling of GL buffer objects accessible using
the GL bind points (GL_ARRAY_BUFFER, GL_PIXEL_*_BUFFER).

Implementation based off the current GstGLMemory.
2017-12-09 19:32:04 +00:00
Matthew Waters
c9d99be28c gl/prototypes: add some buffer function prototypes 2017-12-09 19:32:04 +00:00
Matthew Waters
9900928403 gl/window/x11: only listen on the X Display when needed
5697b6b89b causes us to possibly listen
on a toolkit provided Display connection.  We thus could eat their
precious winsys events.  Only listen if we need to
(!foreign_display or videooverlay).
2017-12-09 19:32:04 +00:00
Jan Schmidt
8a1fc4ab4e gl: Add support for multiple views in upload, colour convert and download
Support multiple attached views on input/output buffers
by processing each one, not just the first.
2017-12-09 19:32:04 +00:00
Matthew Waters
1f7025c585 gl/window/x11: don't create our own X11 display
It's not needed anymore with most window operations occuring in the
GL thread.
2017-12-09 19:32:04 +00:00
Matthew Waters
e37cf3c55f gl/window/x11: handle_events() may be called before the window has been created
Fixes an XIO fatal error
2017-12-09 19:32:04 +00:00
Sebastian Dröge
1a995d1676 gl: OES_vertex_array_object is improperly implemented on PowerVR SGX 544MP
https://bugzilla.gnome.org/show_bug.cgi?id=750185
2017-12-09 19:32:03 +00:00
Thiago Santos
33b5cd5426 Fix a common typo: retreive -> retrieve
Seems to have been copy pasted around a few places
2017-12-09 19:32:03 +00:00
Philippe Normand
deedbd799c gl/dispmanx: Fix build 2017-12-09 19:32:03 +00:00
Matthew Waters
5404083158 gl/window/dispmanx: fix compiler warning 2017-12-09 19:32:03 +00:00
Matthew Waters
bb1de83ff2 gl/window: use the default main loop implementation for all backends
fixes glimagsink being unable to display.

https://bugzilla.gnome.org/show_bug.cgi?id=750337
2017-12-09 19:32:03 +00:00
Julien Isorce
9ac4280052 glwindow_cocoa: use parent default implementation
Fixes https://bugzilla.gnome.org/show_bug.cgi?id=750337
2017-12-09 19:32:03 +00:00