running GStreamer as a background process/daemon

[Sergei Vorobyov]

I resolved the problem by simply adding the explicit export DISPLAY=:0.0 to
the script:

#!/bin/bash

case $1 in
     start)
echo $$ > /var/run-usr/mp.pid;
export DISPLAY=:0.0
      exec 2>&1 /path/to/my/mp 1>/dev/null ;;

although the apparently equivalent (to export DISPLAY=:0.0)

Display *display = XOpenDisplay (":0");

nor

Display *display = XOpenDisplay (":0.0");

in the mp code don't help. This was the problem!



On Tue, Jun 24, 2014 at 3:41 PM, Sergei Vorobyov <
sergei.vorobyov at facilitylabs.com> wrote:

> To make my GStreamer app unsinkable (sad to say the GStreamer sometimes
> freezes after a few days of intensive repetitive usage with dynamic pipes,
> caps, etc) I decided to start, monitor, and relaunch when needed my media
> player as a background process. Trouble is:
>
> the background process fails in the very beginning at
>
> if (gst_element_set_state (pipeline, GST_STATE_PLAYING) ==
>                                          GST_STATE_CHANGE_FAILURE) {
>             LOG_ERROR("failed to set pipeline to PLAYING");
>             EXIT(-1);
> }
>
> whereas it always works OK in the foreground mode.
>
> Note that my
>
> Display *display = XOpenDisplay (":0");
>
> Window window = XCreateWindow(display, ...
>
> gst_video_overlay_set_window_handle(GST_VIDEO_OVERLAY(sink), window);
>
> (where sink is ximagesink; I am trying to overlay my ximagesink over an
> X-window)
>
> all work OK in the fore- and background modes.
>
> Of course, I cannot test the void result
> of gst_video_overlay_set_window_handle.
>
> Any ideas? Thanks!
>
>
>
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