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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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0d1d42b205
GstGLDisplayX11 holds the display connection and name. Each thread requires it's own X11 Display connection (initialised from name) due to the fact that we do not want to call XInitThreads(). Doing so would result in segfaults when integrating with GUI toolkits Gtk, Qt, etc. The Display connection is for OpenGL platforms where a constant display is required in order to share contexts (egl). In the case of a wrapped context (added later), we do not have GstGLWindow to retreive the display from so a 'master' connection is used instead.
98 lines
2.4 KiB
C
98 lines
2.4 KiB
C
/*
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* GStreamer
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* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdint.h>
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#include <stdlib.h>
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#include "x11_event_source.h"
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#include "gstgldisplay_x11.h"
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extern gboolean gst_gl_window_x11_handle_event (GstGLWindowX11 * window_x11);
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typedef struct _X11EventSource
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{
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GSource source;
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GPollFD pfd;
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uint32_t mask;
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GstGLWindowX11 *window;
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} X11EventSource;
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static gboolean
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x11_event_source_prepare (GSource * base, gint * timeout)
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{
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X11EventSource *source = (X11EventSource *) base;
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gboolean retval;
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*timeout = -1;
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retval = XPending (source->window->device);
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return retval;
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}
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static gboolean
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x11_event_source_check (GSource * base)
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{
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X11EventSource *source = (X11EventSource *) base;
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gboolean retval;
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retval = source->pfd.revents;
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return retval;
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}
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static gboolean
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x11_event_source_dispatch (GSource * base, GSourceFunc callback, gpointer data)
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{
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X11EventSource *source = (X11EventSource *) base;
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gboolean ret = gst_gl_window_x11_handle_event (source->window);
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if (callback)
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callback (data);
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return ret;
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}
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static GSourceFuncs x11_event_source_funcs = {
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x11_event_source_prepare,
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x11_event_source_check,
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x11_event_source_dispatch,
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NULL
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};
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GSource *
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x11_event_source_new (GstGLWindowX11 * window_x11)
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{
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X11EventSource *source;
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source = (X11EventSource *)
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g_source_new (&x11_event_source_funcs, sizeof (X11EventSource));
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source->window = window_x11;
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source->pfd.fd = ConnectionNumber (source->window->device);
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source->pfd.events = G_IO_IN | G_IO_ERR;
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g_source_add_poll (&source->source, &source->pfd);
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return &source->source;
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}
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