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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 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 General Public License for more details.
12  *
13  * You should have received a copy of the GNU 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 #include "hwc_device.h"
22 
23 #include <hardware/hwcomposer.h>
24 
25 #include <mutex>
26 #include <condition_variable>
27 
28 namespace mir
29 {
30 namespace graphics
31 {
32 namespace android
33 {
34 
35 class HWCVsyncCoordinator;
36 class HWCCommonDevice;
37 struct HWCCallbacks
38 {
39  hwc_procs_t hooks;
40  HWCCommonDevice* self;
41 };
42 
43 class HWCCommonDevice : public HWCDevice
44 {
45 public:
46  virtual ~HWCCommonDevice() noexcept;
47 
48  /* from HWCDevice */
49  geometry::PixelFormat display_format() const;
50  unsigned int number_of_framebuffers_available() const;
51 
52  virtual geometry::Size display_size() const = 0;
53  virtual void set_next_frontbuffer(std::shared_ptr<Buffer> const& buffer) = 0;
54  virtual void commit_frame(EGLDisplay dpy, EGLSurface sur) = 0;
55 
56  virtual void mode(MirPowerMode mode);
57 
58  void notify_vsync();
59 protected:
60  HWCCommonDevice(std::shared_ptr<hwc_composer_device_1> const& hwc_device,
61  std::shared_ptr<HWCVsyncCoordinator> const& coordinator);
62 
63  std::shared_ptr<hwc_composer_device_1> const hwc_device;
64  std::shared_ptr<HWCVsyncCoordinator> const coordinator;
65 protected:
66  std::unique_lock<std::mutex> lock_unblanked();
67 
68 private:
69  int turn_screen_on() const noexcept(true);
70  int turn_screen_off() const noexcept(true);
71 
72  HWCCallbacks callbacks;
73 
74  std::mutex blanked_mutex;
75  std::condition_variable blanked_cond;
76  MirPowerMode current_mode;
77 };
78 
79 }
80 }
81 }
82 
83 #endif /* MIR_GRAPHICS_ANDROID_HWC_COMMON_DEVICE_H_ */

Copyright © 2012,2013 Canonical Ltd.
Generated on Tue Oct 15 00:23:28 UTC 2013