display_service.h revision 0057fddc71d1c3c3de8f9d0bd45a51bb293bfa3c 
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/bufferhub_rpc.h>
7#include <private/dvr/display_rpc.h>
8#include <private/dvr/late_latch.h>
9
10#include <functional>
11#include <iterator>
12#include <memory>
13#include <string>
14#include <vector>
15
16#include "acquired_buffer.h"
17#include "display_surface.h"
18#include "hardware_composer.h"
19
20namespace android {
21namespace dvr {
22
23// DisplayService implements the displayd display service over ServiceFS.
24class DisplayService : public pdx::ServiceBase<DisplayService> {
25 public:
26  bool IsInitialized() const override;
27  std::string DumpState(size_t max_length) override;
28
29  void OnChannelClose(pdx::Message& message,
30                      const std::shared_ptr<pdx::Channel>& channel) override;
31  pdx::Status<void> HandleMessage(pdx::Message& message) override;
32
33  std::shared_ptr<DisplaySurface> GetDisplaySurface(int surface_id) const;
34  std::vector<std::shared_ptr<DisplaySurface>> GetDisplaySurfaces() const;
35  std::vector<std::shared_ptr<DisplaySurface>> GetVisibleDisplaySurfaces()
36      const;
37
38  // Updates the list of actively displayed surfaces. This must be called after
39  // any change to client/manager attributes that affect visibility or z order.
40  void UpdateActiveDisplaySurfaces();
41
42  pdx::Status<BorrowedNativeBufferHandle> SetupNamedBuffer(
43      const std::string& name, size_t size, int usage);
44
45  template <class A>
46  void ForEachDisplaySurface(A action) const {
47    ForEachChannel([action](const ChannelIterator::value_type& pair) mutable {
48      auto surface = std::static_pointer_cast<SurfaceChannel>(pair.second);
49      if (surface->type() == SurfaceTypeEnum::Normal)
50        action(std::static_pointer_cast<DisplaySurface>(surface));
51    });
52  }
53
54  using DisplayConfigurationUpdateNotifier = std::function<void(void)>;
55  void SetDisplayConfigurationUpdateNotifier(
56      DisplayConfigurationUpdateNotifier notifier);
57
58  using VSyncCallback = HardwareComposer::VSyncCallback;
59  void SetVSyncCallback(VSyncCallback callback) {
60    hardware_composer_.SetVSyncCallback(callback);
61  }
62
63  HWCDisplayMetrics GetDisplayMetrics() {
64    return hardware_composer_.display_metrics();
65  }
66
67  void GrantDisplayOwnership() { hardware_composer_.Enable(); }
68  void SeizeDisplayOwnership() { hardware_composer_.Disable(); }
69
70  void OnHardwareComposerRefresh();
71
72 private:
73  friend BASE;
74  friend DisplaySurface;
75
76  friend class VrDisplayStateService;
77
78  DisplayService();
79  DisplayService(android::Hwc2::Composer* hidl);
80
81  SystemDisplayMetrics OnGetMetrics(pdx::Message& message);
82  int OnCreateSurface(pdx::Message& message, int width, int height, int format,
83                      int usage, DisplaySurfaceFlags flags);
84
85  DisplayRPC::ByteBuffer OnGetEdsCapture(pdx::Message& message);
86
87  void OnSetViewerParams(pdx::Message& message,
88                         const ViewerParams& view_params);
89  pdx::Status<BorrowedNativeBufferHandle> OnGetNamedBuffer(
90      pdx::Message& message, const std::string& name);
91
92  // Temporary query for current VR status. Will be removed later.
93  int IsVrAppRunning(pdx::Message& message);
94
95  // Called by DisplaySurface to signal that a surface property has changed and
96  // the display manager should be notified.
97  void NotifyDisplayConfigurationUpdate();
98
99  pdx::Status<void> HandleSurfaceMessage(pdx::Message& message);
100
101  DisplayService(const DisplayService&) = delete;
102  void operator=(const DisplayService&) = delete;
103
104  HardwareComposer hardware_composer_;
105  DisplayConfigurationUpdateNotifier update_notifier_;
106
107  std::unordered_map<std::string, std::unique_ptr<IonBuffer>> named_buffers_;
108};
109
110}  // namespace dvr
111}  // namespace android
112
113#endif  // ANDROID_DVR_SERVICES_DISPLAYD_DISPLAY_SERVICE_H_
114