1#ifndef ANDROID_DVR_SERVICES_DISPLAYD_DISPLAY_SERVICE_H_ 2#define ANDROID_DVR_SERVICES_DISPLAYD_DISPLAY_SERVICE_H_ 3 4#include <dvr/dvr_api.h> 5#include <pdx/service.h> 6#include <pdx/status.h> 7#include <private/dvr/buffer_hub_client.h> 8#include <private/dvr/bufferhub_rpc.h> 9#include <private/dvr/display_protocol.h> 10 11#include <functional> 12#include <iterator> 13#include <memory> 14#include <string> 15#include <vector> 16 17#include "acquired_buffer.h" 18#include "display_surface.h" 19#include "epoll_event_dispatcher.h" 20#include "hardware_composer.h" 21 22namespace android { 23namespace dvr { 24 25// DisplayService implements the display service component of VrFlinger. 26class DisplayService : public pdx::ServiceBase<DisplayService> { 27 public: 28 bool IsInitialized() const override; 29 std::string DumpState(size_t max_length) override; 30 31 void OnChannelClose(pdx::Message& message, 32 const std::shared_ptr<pdx::Channel>& channel) override; 33 pdx::Status<void> HandleMessage(pdx::Message& message) override; 34 35 std::shared_ptr<DisplaySurface> GetDisplaySurface(int surface_id) const; 36 std::vector<std::shared_ptr<DisplaySurface>> GetDisplaySurfaces() const; 37 std::vector<std::shared_ptr<DirectDisplaySurface>> GetVisibleDisplaySurfaces() 38 const; 39 40 // Updates the list of actively displayed surfaces. This must be called after 41 // any change to client/manager attributes that affect visibility or z order. 42 void UpdateActiveDisplaySurfaces(); 43 44 pdx::Status<BorrowedNativeBufferHandle> SetupGlobalBuffer( 45 DvrGlobalBufferKey key, size_t size, uint64_t usage); 46 47 pdx::Status<void> DeleteGlobalBuffer(DvrGlobalBufferKey key); 48 49 template <class A> 50 void ForEachDisplaySurface(SurfaceType surface_type, A action) const { 51 ForEachChannel([surface_type, 52 action](const ChannelIterator::value_type& pair) mutable { 53 auto surface = std::static_pointer_cast<DisplaySurface>(pair.second); 54 if (surface->surface_type() == surface_type) 55 action(surface); 56 }); 57 } 58 59 using DisplayConfigurationUpdateNotifier = std::function<void(void)>; 60 void SetDisplayConfigurationUpdateNotifier( 61 DisplayConfigurationUpdateNotifier notifier); 62 63 using VSyncCallback = HardwareComposer::VSyncCallback; 64 void SetVSyncCallback(VSyncCallback callback) { 65 hardware_composer_.SetVSyncCallback(callback); 66 } 67 68 void GrantDisplayOwnership() { hardware_composer_.Enable(); } 69 void SeizeDisplayOwnership() { hardware_composer_.Disable(); } 70 void OnBootFinished() { hardware_composer_.OnBootFinished(); } 71 72 private: 73 friend BASE; 74 friend DisplaySurface; 75 76 friend class VrDisplayStateService; 77 78 using RequestDisplayCallback = std::function<void(bool)>; 79 80 DisplayService(android::Hwc2::Composer* hidl, 81 hwc2_display_t primary_display_id, 82 RequestDisplayCallback request_display_callback); 83 84 pdx::Status<BorrowedNativeBufferHandle> OnGetGlobalBuffer( 85 pdx::Message& message, DvrGlobalBufferKey key); 86 pdx::Status<display::Metrics> OnGetMetrics(pdx::Message& message); 87 pdx::Status<std::string> OnGetConfigurationData( 88 pdx::Message& message, display::ConfigFileType config_type); 89 pdx::Status<display::SurfaceInfo> OnCreateSurface( 90 pdx::Message& message, const display::SurfaceAttributes& attributes); 91 pdx::Status<BorrowedNativeBufferHandle> OnSetupGlobalBuffer( 92 pdx::Message& message, DvrGlobalBufferKey key, size_t size, 93 uint64_t usage); 94 pdx::Status<void> OnDeleteGlobalBuffer(pdx::Message& message, 95 DvrGlobalBufferKey key); 96 97 // Temporary query for current VR status. Will be removed later. 98 pdx::Status<bool> IsVrAppRunning(pdx::Message& message); 99 100 pdx::Status<void> AddEventHandler(int fd, int events, 101 EpollEventDispatcher::Handler handler) { 102 return dispatcher_.AddEventHandler(fd, events, handler); 103 } 104 pdx::Status<void> RemoveEventHandler(int fd) { 105 return dispatcher_.RemoveEventHandler(fd); 106 } 107 108 void SurfaceUpdated(SurfaceType surface_type, 109 display::SurfaceUpdateFlags update_flags); 110 111 // Called by DisplaySurface to signal that a surface property has changed and 112 // the display manager should be notified. 113 void NotifyDisplayConfigurationUpdate(); 114 115 pdx::Status<void> HandleSurfaceMessage(pdx::Message& message); 116 117 HardwareComposer hardware_composer_; 118 EpollEventDispatcher dispatcher_; 119 DisplayConfigurationUpdateNotifier update_notifier_; 120 121 std::unordered_map<DvrGlobalBufferKey, std::unique_ptr<IonBuffer>> 122 global_buffers_; 123 124 DisplayService(const DisplayService&) = delete; 125 void operator=(const DisplayService&) = delete; 126}; 127 128} // namespace dvr 129} // namespace android 130 131#endif // ANDROID_DVR_SERVICES_DISPLAYD_DISPLAY_SERVICE_H_ 132