1 /*
2 * GStreamer
3 * Copyright (C) 2012 Matthew Waters <ystreet00@gmail.com>
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21 #ifdef HAVE_CONFIG_H
22 #include "config.h"
23 #endif
24
25 #include <stdint.h>
26 #include <stdlib.h>
27
28 #include "xcb_event_source.h"
29 #include "gstgldisplay_x11.h"
30 #include "gstglwindow_x11.h"
31
32 G_GNUC_INTERNAL
33 extern gboolean gst_gl_display_x11_handle_event (GstGLDisplayX11 *
34 display_x11);
35
36 typedef struct _XCBEventSource
37 {
38 GSource source;
39 GPollFD pfd;
40 uint32_t mask;
41 GstGLDisplayX11 *display_x11;
42 } XCBEventSource;
43
44 static gboolean
xcb_event_source_prepare(GSource * base,gint * timeout)45 xcb_event_source_prepare (GSource * base, gint * timeout)
46 {
47 XCBEventSource *source = (XCBEventSource *) base;
48
49 xcb_flush (source->display_x11->xcb_connection);
50
51 *timeout = -1;
52 return FALSE;
53 }
54
55 static gboolean
xcb_event_source_check(GSource * base)56 xcb_event_source_check (GSource * base)
57 {
58 XCBEventSource *source = (XCBEventSource *) base;
59 gboolean retval;
60
61 retval = source->pfd.revents;
62
63 return retval;
64 }
65
66 static gboolean
xcb_event_source_dispatch(GSource * base,GSourceFunc callback,gpointer data)67 xcb_event_source_dispatch (GSource * base, GSourceFunc callback, gpointer data)
68 {
69 XCBEventSource *source = (XCBEventSource *) base;
70
71 gboolean ret = gst_gl_display_x11_handle_event (source->display_x11);
72
73 source->pfd.revents = 0;
74
75 if (callback)
76 callback (data);
77
78 return ret;
79 }
80
81 static GSourceFuncs xcb_event_source_funcs = {
82 xcb_event_source_prepare,
83 xcb_event_source_check,
84 xcb_event_source_dispatch,
85 NULL
86 };
87
88 GSource *
xcb_event_source_new(GstGLDisplayX11 * display_x11)89 xcb_event_source_new (GstGLDisplayX11 * display_x11)
90 {
91 xcb_connection_t *connection;
92 XCBEventSource *source;
93
94 connection = display_x11->xcb_connection;
95 g_return_val_if_fail (connection != NULL, NULL);
96
97 source = (XCBEventSource *)
98 g_source_new (&xcb_event_source_funcs, sizeof (XCBEventSource));
99 source->display_x11 = display_x11;
100 source->pfd.fd = xcb_get_file_descriptor (connection);
101 source->pfd.events = G_IO_IN | G_IO_ERR;
102 g_source_add_poll (&source->source, &source->pfd);
103
104 return &source->source;
105 }
106