1 /* Copyright (C) 2010 The Android Open Source Project
2 **
3 ** This software is licensed under the terms of the GNU General Public
4 ** License version 2, as published by the Free Software Foundation, and
5 ** may be copied, distributed, and modified under those terms.
6 **
7 ** This program is distributed in the hope that it will be useful,
8 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
9 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 ** GNU General Public License for more details.
11 */
12
13 /*
14 * Contains extension to android display (see android/display.h|c) that is used
15 * by the core to communicate display changes to the attached UI
16 */
17
18 #include "android/display-core.h"
19 #include "qemu-common.h"
20
21 /* This callback is call periodically by the GUI timer.
22 * Its purpose is to ensure that hw framebuffer updates are properly
23 * detected. Call the normal QEMU function for this here.
24 */
25 static void
coredisplay_refresh(DisplayState * ds)26 coredisplay_refresh(DisplayState* ds)
27 {
28 (void)ds;
29 vga_hw_update();
30 }
31
32 /* Don't do anything here because this callback can't differentiate
33 * between several listeners. This will be handled by a DisplayUpdateListener
34 * instead. See Android-specific changes in console.h
35 *
36 * In the core, the DisplayUpdateListener is registered by the ProxyFramebuffer
37 * object. See android/protocol/fb-updates-proxy.c.
38 */
39 static void
coredisplay_update(DisplayState * ds,int x,int y,int w,int h)40 coredisplay_update(DisplayState* ds, int x, int y, int w, int h)
41 {
42 (void)ds;
43 (void)x;
44 (void)y;
45 (void)w;
46 (void)h;
47 }
48
49 /* This callback is normally used to indicate that the display resolution
50 * was changed by the guest (e.g. when a Windows PC changes the display from
51 * 1024x768 to 800x600. Since this doesn't happen in Android, ignore it.
52 */
53 static void
coredisplay_resize(DisplayState * ds)54 coredisplay_resize(DisplayState* ds)
55 {
56 (void)ds;
57 }
58
59 void
coredisplay_init(DisplayState * ds)60 coredisplay_init(DisplayState* ds)
61 {
62 static DisplayChangeListener dcl[1];
63
64 dcl->dpy_update = coredisplay_update;
65 dcl->dpy_refresh = coredisplay_refresh;
66 dcl->dpy_resize = coredisplay_resize;
67 register_displaychangelistener(ds, dcl);
68 }
69