History

Michael Weghorn 441d8ed9be tdf#145735 avmedia qt: Use QtMultimedia for Qt 6 media playback Similar to the way that GTK 4's native facilities for video playback are used for the gtk4 VCL plugin, initially added in commit commit `d0a527ec09` Author: Caolán McNamara <caolanm@redhat.com> Date: Thu Feb 10 12:55:18 2022 +0000 first cut at using Gtk4 built in video playback , implement media playback using QtMultimedia for the Qt 6 based VCL plugins (qt6/kf6) via a new service "com.sun.star.comp.avmedia.Manager_Qt". Video playback with the mechanism used for qt5 no longer works with qt6, as "qwidget5videosink" that gets used on Wayland for qt5 wasn't ported to Qt 6 and is unmaintained, s. the commit message of commit `88d57cf241` Author: Michael Weghorn <m.weghorn@posteo.de> Date: Wed Sep 29 11:09:51 2021 +0200 qt6: Add a qt6 VCL plugin for more details. Additionally, this also doesn't work properly any more on X11/with the xcb Qt QPA platform, see tdf#145735 comment 7. Instead of using GStreamer directly, let Qt handle the low-level stuff by using the QtMultimedia module [1] instead. This adds a new dependency on QtMultimedia. For building, this requires installing the Qt 6 QtMultimedia development headers (e.g. package `qt6-multimedia-dev` on current Debian testing). Except for WASM, the use of QtMultimedia is enabled by default when building with autogen options `--enable-qt6` or `--enable-kf6`, but can explicitly be disabled using `--disable-qt6-multimedia`. In tests with the qt6 VCL plugin on Debian testing, with a sample presentation containing an embedded video, attachment 145517 from tdf#120452, video playback generally works for both, the xcb and the wayland Qt QPA platforms: * Video and audio are played as expected on the external screen in presentation mode when using the presenter console * Video and audio playback work in non-presentation mode by clicking on the video and using the controls in the Impress sidebar (play, pause,...). However, the following issues were observed with the current implementation: * There's an odd frame/margin around the video. * In non-presentation mode, the placeholder shown until the video gets started using the controls in the sidebar is just an "audio icon", not a frame from the actual video. (This might be related to the fact that `QtPlayer::createFrameGrabber` currently returns an empty reference.) * At least on Wayland (issue not observed with QT_QPA_PLATFORM=xcb so far), when using the presenter console, video playback in the presenter console (i.e. on the non-presentation screen) is unreliable: The video sometimes shows, but sometimes doesn't. At least the (more important) one on the presentation screen was reliably shown in my tests, however. Tested with git dev versions of qtbase (as of commit 8d5e7d50d8dbf1ad79bd8ff9f6ef6028eba481c9), qtwayland (as of commit 6f0ebd916f176f6fbe35af28caeb52b62768ac94) and qtmultimedia (as of commit 264b7e8d7d5683252102b5e5149685c8b8a70c2d). [1] https://doc.qt.io/qt-6/qtmultimedia-index.html Change-Id: I29c3c7ded01c61b49b192fa5c313d8a92c942185 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/167869 Reviewed-by: Michael Weghorn <m.weghorn@posteo.de> Tested-by: Jenkins		2024-05-21 17:28:04 +02:00
..
.gitignore
config_atspi.h.in
config_box2d.h.in
config_buildconfig.h.in
config_buildid.h.in
config_cairo_canvas.h.in
config_cairo_rgba.h.in
config_clang.h.in
config_crypto.h.in
config_cxxabi.h.in
config_dbus.h.in
config_dconf.h.in
config_eot.h.in
config_extensions.h.in
config_feature_desktop.h.in
config_feature_opencl.h.in
config_features.h.in
config_firebird.h.in
config_folders.h.in
config_fonts.h.in
config_fuzzers.h.in
config_gio.h.in
config_global.h.in
config_gpgme.h.in
config_java.h.in
config_langs.h.in
config_lgpl.h.in
config_libcxx.h.in
config_liblangtag.h.in
config_locales.h.in
config_mpl.h.in
config_oauth2.h.in
config_oox.h.in
config_options.h.in
config_options_calc.h.in
config_poppler.h.in
config_probes.h.in
config_python.h.in
config_skia.h.in
config_typesizes.h.in
config_validation.h.in
config_vclplug.h.in
config_vendor.h.in
config_version.h.in
config_wasm_strip.h.in
config_writerperfect.h.in
config_zxing.h.in
README.md

README.md

C/C++ Configuration Created by configure Script

These are configuration files for various features as detected by configure.

Include only those files you need (in order to reduce rebuilds when a setting changes).

Settings here are only C/C++ #define directives, so they apply only to C/C++ source, not to Makefiles.

Adding a New Setting:

do AC_DEFINE(HAVE_FOO) in configure.ac when a setting should be set
choose the proper config_host/config_XXX.h file to use
- if it is a global setting (such as availability of a compiler feature), use config_host/config_global.h
- otherwise check if there is a matching config_host/config_XXX.h file
- if none matches, add a new one:
  - add config_host/config_XXX.h.in here, with just #ifndef include guard
  - add AC_CONFIG_HEADERS([config_host/config_XXX.h]) next to the others in configure.ac
add #define HAVE_FOO 0 to the config_host/config_XXX.h, possibly with a comment (do not use #undef HAVE_FOO, unless the setting has more values than on/off)
add #include <config_XXX.h> before any #if HAVE_FOO in a source file
make sure you use #if HAVE_FOO for on/off settings, do not use #ifdef