weston

History

Antonio Borneo c90fccc256 backend-drm: fix race during system suspend Depending on system loading, weston-launcher could drop the drm master access before the compositor and all the clients receive the notification. In this case, some commit could be sent to the drm driver too late and get refused with error EACCES. This error condition is not properly managed and causes weston to hang. Change the return type of start_repaint_loop() and repaint_flush() from void to int, and return 0 on success or -1 if the repaint has to be cancelled. In the callers of start_repaint_loop() and repaint_flush() handle the return value and cancel the repaint when needed. In backend-drm detect the error EACCES and return -1. Note: to keep the code cleaner, this change inverts the execution order between weston_output_schedule_repaint_reset() and repaint_cancel(). No need to wait for suspend or for any notification; in case the weston reschedules a repaint, it will get EACCES again. At resume, damage-all guarantees a complete repaint. This fix is for atomic modeset only. Legacy modeset suffers from similar problems, but it is not fixed by this change. Since drm_pending_state_apply() never returns error for legacy modeset, this change has no impact on legacy modeset. Signed-off-by: Antonio Borneo <antonio.borneo@st.com> Fixes: https://gitlab.freedesktop.org/wayland/weston/issues/117		6 years ago
..
README	doc: Move helper scripts to doc/scripts	6 years ago
meson.build	build: Fix hint to disable remoting	6 years ago
remoting-plugin.c	backend-drm: fix race during system suspend	6 years ago
remoting-plugin.h	remoting: make a gstreamer pipeline configurable	6 years ago

README

	Remoting plugin for Weston


The Remoting plugin creates a streaming image of a virtual output and transmits
it to a remote host. It is currently only supported on the drm-backend. Virtual
outputs are created and configured by adding a remote-output section to
weston.ini. See man weston-drm(7) for configuration details. This plugin is
loaded automatically if any remote-output sections are present.

This plugin sends motion jpeg images to a client via RTP using gstreamer, and
so requires gstreamer-1.0. This plugin starts sending images immediately when
weston is run, and keeps sending them until weston shuts down. The image stream
can be received by any appropriately configured RTP client, but a sample
gstreamer RTP client script can be found at doc/scripts/remoting-client-receive.bash.

Script usage:
	remoting-client-receive.bash <PORT NUMBER>


How to compile
---------------
Set --enable-remoting=true when configuring weston. The remoting-plugin.so
module is created and installed in the libweston path.


How to configure weston.ini
----------------------------
See man weston-drm(7).