By implementing support for `GdkDmabufTextureBuilder` and
`GstVideoInfoDmaDrm`. This allows zero-copy video playback on Wayland
when paired with hardware video decoding.
Can be tested with `gtk4-demo --run=video_player`
It started out as busywork, but it does many separate things. If I could
start over, I'd take them apart into multiple commits:
1. Remove G_ENABLE_DEBUG around GDK_DEBUG_*() calls
This is not needed at all, the calls themselves take care of it.
2. Remove G_ENABLE_DEBUG around profiling code
This now enables profiling support in release builds.
3. Stop poking _gdk_debug_flags and use GDK_DEBUG_CHECK()
This was old code that was never updated.
4. Make !G_ENABLE_DEBUG turn off GDK_DEBUG_CHECK()
The code used to
#define GDK_DEBUG_CHECK(...) false
#define GDK_DEBUG(...)
which would compile away all the code inside those macros. This
means a lot of variable definitions and debug utility functions
would suddenly no longer be used and cause compiler errors.
1. Check GStreamer caps for premultiplied alpha and select
GdkMemoryFormat accordingly
2. Set a GdkMemoryFormat for GL textures
Fixes the video in widget-factory being treated as premultiplied when it
isn't.
We now need glib-2.76.0 or later, which removes our needs for the workarounds
that we need to build the media backends against GLib-2.74.x or earlier, so
clean up things a bit.
Since we are making GdkGLContext call the core wgl*() functions directly
instead of via libepoxy, drop the workarounds that we needed for notifying
libepoxy that wglMakeCurrent() outside of GDK/GTK was called.
This way, we clean up the code, and as a result, we can use the GstGL
APIs like the other platforms to query what GL api that is to be used.
For ensuring that things work between different threads, we now call
gdk_gl_context_clear_current() in place of calling wglMakeCurrent(xxx,
NULL), so that we make sure that there is no current GL context on a
thread outside of GstGL's thread, which Windows does not like.
The current definitions of the g_io_module_*() symbols do not build on
Visual Studio when building against GLib earlier than 2.75.0 due to the
way how these symbols are decorated in the GLib headers, as Visual Studio
does not allow symbols that were previously marked with 'extern' (or so)
to be marked with anything that is symantically different later.
As a result, if we are using Visual Studio and glib-2.74.x or earlier,
override _GLIB_EXTERN as appropriate in the modules/media sources before
including the GIO headers. This sadly, means that we need a
configure-time check as it would have been too late if we checked the
GLib version using G_VERSION_CHECK macro, as the GIO headers would have
been included already.
There are similar items in the print backends, but we will not attempt
to update these files as they are not meant to be built for Windows.
The Common Print Dialog Backends (CPDB) concept has GUI-toolkit-independent
backends for each print technology (CUPS, Print to File, cloud printing
services, ...) and each print dialog (GTK, Qt, Chromium, ...) is supposed
to use this backend, so that changes in print technologies can be centrally
and quickly covered by changing the backends and everything new gets available
in all print dialogs.
This commit provides a GTK print dialog backend to add support for the CPDB
concept. It communicates with all installed CPDB backends and so gives support
for all these print technologies to the GTK print dialog.
To make use of CPDB the GTK print dialog is supposed to be installed with this
backend and the 'Print To File' backend, and not any others to prevent printer
duplication.
It does not make sense to sync and wait in the
same context, that is just a no-op. The intention
of this code clearly was to sync in the gst
context, and wait in the gdk one.
That also matches what the gtk sink implementation
in gstreamer does.
This reverts commit acd9c12667.
This commit breaks the build with GLib main on all platforms,
and defining _GLIB_EXTERN arguably invades the GLib namespace.
A different fix for msvc will have to be found.
Those property features don't seem to be in use anywhere.
They are redundant since the docs cover the same information
and more. They also created unnecessary translation work.
Closes#4904
This seems to be a problem since:
https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/3565
To demo the problem, the video demo in gtk4-demo is currently set to
autoplay, but it doesn't autoplay on load as expected because the
"prepared" notification doesn't fire until the user explicitly presses
play.
Similarly if the demo is tweaked to disable autoplay then on loading a
video (or an audio-only ogg) the duration is not known or shown until
the user presses play.
In LibreOffice we want to know what the size of the video is to position
it before the user can interact with it to set it to play. We can
workaround this to some degree by listening to "invalidate-size" on the
GtkMediaStream object which updates for videos, but that doesn't wor
for audio-only streams.
So restore listening to media-info-updated but ignore -1 (which I see
for audio-only where I get -1 and then a useful value) and 0 of the
original report.
see also:
https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/3550GNOME/gtk!4513
If we have GStreamer on macOS we likely have support for CGL to get an
OpenGL context we can use. This provides the missing pieces to get
accelerated video playback in gtk4-widget-factory working.
When loading .mp3 files the duration is initially unknown. Before this
change it was reported as a large integer (since GST_CLOCK_TIME_NONE is
-1). Now it's correctly reported as 0.
