display_service.h revision a3613612a1142c3134045f08c30a861ea43288ed 
1#ifndef ANDROID_DVR_SERVICES_DISPLAYD_DISPLAY_SERVICE_H_
2#define ANDROID_DVR_SERVICES_DISPLAYD_DISPLAY_SERVICE_H_
3
4#include <pdx/service.h>
5#include <private/dvr/buffer_hub_client.h>
6#include <private/dvr/display_rpc.h>
7#include <private/dvr/late_latch.h>
8
9#include <functional>
10#include <iterator>
11#include <memory>
12#include <string>
13#include <vector>
14
15#include "acquired_buffer.h"
16#include "display_surface.h"
17#include "hardware_composer.h"
18
19namespace android {
20namespace dvr {
21
22// DisplayService implements the displayd display service over ServiceFS.
23class DisplayService : public pdx::ServiceBase<DisplayService> {
24 public:
25  bool IsInitialized() const override;
26  std::string DumpState(size_t max_length) override;
27
28  void OnChannelClose(pdx::Message& message,
29                      const std::shared_ptr<pdx::Channel>& channel) override;
30  int HandleMessage(pdx::Message& message) override;
31
32  std::shared_ptr<DisplaySurface> GetDisplaySurface(int surface_id) const;
33  std::vector<std::shared_ptr<DisplaySurface>> GetDisplaySurfaces() const;
34  std::vector<std::shared_ptr<DisplaySurface>> GetVisibleDisplaySurfaces()
35      const;
36
37  // Updates the list of actively displayed surfaces. This must be called after
38  // any change to client/manager attributes that affect visibility or z order.
39  int UpdateActiveDisplaySurfaces();
40
41  template <class A>
42  void ForEachDisplaySurface(A action) const {
43    ForEachChannel([action](const ChannelIterator::value_type& pair) mutable {
44      auto surface = std::static_pointer_cast<SurfaceChannel>(pair.second);
45      if (surface->type() == SurfaceTypeEnum::Normal)
46        action(std::static_pointer_cast<DisplaySurface>(surface));
47    });
48  }
49
50  using DisplayConfigurationUpdateNotifier = std::function<void(void)>;
51  void SetDisplayConfigurationUpdateNotifier(
52      DisplayConfigurationUpdateNotifier notifier);
53
54  using VSyncCallback = HardwareComposer::VSyncCallback;
55  void SetVSyncCallback(VSyncCallback callback) {
56    hardware_composer_.SetVSyncCallback(callback);
57  }
58
59  HWCDisplayMetrics GetDisplayMetrics() {
60    return hardware_composer_.display_metrics();
61  }
62
63  void SetActive(bool activated) {
64    if (activated) {
65      hardware_composer_.Resume();
66    } else {
67      hardware_composer_.Suspend();
68    }
69  }
70
71  void OnHardwareComposerRefresh();
72
73 private:
74  friend BASE;
75  friend DisplaySurface;
76
77  friend class VrDisplayStateService;
78
79  DisplayService();
80  DisplayService(android::Hwc2::Composer* hidl);
81
82  SystemDisplayMetrics OnGetMetrics(pdx::Message& message);
83  int OnCreateSurface(pdx::Message& message, int width, int height,
84                      int format, int usage, DisplaySurfaceFlags flags);
85
86  DisplayRPC::ByteBuffer OnGetEdsCapture(pdx::Message& message);
87
88  int OnEnterVrMode(pdx::Message& message);
89  int OnExitVrMode(pdx::Message& message);
90  void OnSetViewerParams(pdx::Message& message, const ViewerParams& view_params);
91
92  // Called by DisplaySurface to signal that a surface property has changed and
93  // the display manager should be notified.
94  void NotifyDisplayConfigurationUpdate();
95
96  int HandleSurfaceMessage(pdx::Message& message);
97
98  DisplayService(const DisplayService&) = delete;
99  void operator=(const DisplayService&) = delete;
100
101  HardwareComposer hardware_composer_;
102  DisplayConfigurationUpdateNotifier update_notifier_;
103};
104
105}  // namespace dvr
106}  // namespace android
107
108#endif  // ANDROID_DVR_SERVICES_DISPLAYD_DISPLAY_SERVICE_H_
109