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hwc_common_device.h
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1 /*
2  * Copyright © 2013 Canonical Ltd.
3  *
4  * This program is free software: you can redistribute it and/or modify it
5  * under the terms of the GNU Lesser General Public License version 3,
6  * as published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU Lesser General Public License for more details.
12  *
13  * You should have received a copy of the GNU Lesser General Public License
14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
15  *
16  * Authored by: Kevin DuBois <kevin.dubois@canonical.com>
17  */
18 
19 #ifndef MIR_GRAPHICS_ANDROID_HWC_COMMON_DEVICE_H_
20 #define MIR_GRAPHICS_ANDROID_HWC_COMMON_DEVICE_H_
21 
22 #include "display_device.h"
23 #include <hardware/hwcomposer.h>
24 
25 #include <memory>
26 #include <mutex>
27 #include <condition_variable>
28 
29 namespace mir
30 {
31 namespace graphics
32 {
33 namespace android
34 {
35 
36 class HWCVsyncCoordinator;
37 class HWCCommonDevice;
38 struct HWCCallbacks
39 {
40  hwc_procs_t hooks;
41  HWCCommonDevice* self;
42 };
43 
44 class HWCCommonDevice : public DisplayDevice
45 {
46 public:
47  virtual ~HWCCommonDevice() noexcept;
48 
49  void notify_vsync();
50  void mode(MirPowerMode mode);
51  bool apply_orientation(MirOrientation orientation) const;
52 
53 protected:
54  HWCCommonDevice(std::shared_ptr<hwc_composer_device_1> const& hwc_device,
55  std::shared_ptr<HWCVsyncCoordinator> const& coordinator);
56 
57  std::shared_ptr<HWCVsyncCoordinator> const coordinator;
58  std::unique_lock<std::mutex> lock_unblanked();
59 
60 private:
61  int turn_screen_on() const noexcept(true);
62  int turn_screen_off() const noexcept(true);
63 
64  HWCCallbacks callbacks;
65 
66  std::shared_ptr<hwc_composer_device_1> const hwc_device;
67 
68  std::mutex blanked_mutex;
69  std::condition_variable blanked_cond;
70  MirPowerMode current_mode;
71 };
72 
73 }
74 }
75 }
76 
77 #endif /* MIR_GRAPHICS_ANDROID_HWC_COMMON_DEVICE_H_ */
MirOrientation
Definition: common.h:113
true
Definition: display_configuration.cpp:30
MirPowerMode
Definition: common.h:82

Copyright © 2012,2013 Canonical Ltd.
Generated on Fri Apr 11 21:14:53 UTC 2014