gstreamer/gst-libs/gst/gl/x11/x11_event_source.c

99 lines
2.4 KiB
C
Raw Normal View History

/*
* GStreamer
* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdint.h>
#include <stdlib.h>
#include "x11_event_source.h"
#include "gstgldisplay_x11.h"
extern gboolean gst_gl_window_x11_handle_event (GstGLWindowX11 * window_x11);
typedef struct _X11EventSource
{
GSource source;
GPollFD pfd;
uint32_t mask;
GstGLWindowX11 *window;
} X11EventSource;
static gboolean
x11_event_source_prepare (GSource * base, gint * timeout)
{
X11EventSource *source = (X11EventSource *) base;
gboolean retval;
*timeout = -1;
retval = XPending (source->window->device);
return retval;
}
static gboolean
x11_event_source_check (GSource * base)
{
X11EventSource *source = (X11EventSource *) base;
gboolean retval;
retval = source->pfd.revents;
return retval;
}
static gboolean
x11_event_source_dispatch (GSource * base, GSourceFunc callback, gpointer data)
{
X11EventSource *source = (X11EventSource *) base;
gboolean ret = gst_gl_window_x11_handle_event (source->window);
if (callback)
callback (data);
return ret;
}
static GSourceFuncs x11_event_source_funcs = {
x11_event_source_prepare,
x11_event_source_check,
x11_event_source_dispatch,
NULL
};
GSource *
x11_event_source_new (GstGLWindowX11 * window_x11)
{
X11EventSource *source;
source = (X11EventSource *)
g_source_new (&x11_event_source_funcs, sizeof (X11EventSource));
source->window = window_x11;
source->pfd.fd = ConnectionNumber (source->window->device);
source->pfd.events = G_IO_IN | G_IO_ERR;
g_source_add_poll (&source->source, &source->pfd);
return &source->source;
}