1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_DRM_H_ 18 #define ANDROID_DRM_H_ 19 20 #include <stdint.h> 21 22 #include <map> 23 #include <tuple> 24 25 #include "DrmConnector.h" 26 #include "DrmCrtc.h" 27 #include "DrmEncoder.h" 28 #include "DrmEventListener.h" 29 #include "DrmPlane.h" 30 31 namespace android { 32 33 class DrmDevice { 34 public: 35 DrmDevice(); 36 ~DrmDevice(); 37 38 std::tuple<int, int> Init(const char *path, int num_displays); 39 fd()40 int fd() const { 41 return fd_.get(); 42 } 43 connectors()44 const std::vector<std::unique_ptr<DrmConnector>> &connectors() const { 45 return connectors_; 46 } 47 planes()48 const std::vector<std::unique_ptr<DrmPlane>> &planes() const { 49 return planes_; 50 } 51 min_resolution()52 std::pair<uint32_t, uint32_t> min_resolution() const { 53 return min_resolution_; 54 } 55 max_resolution()56 std::pair<uint32_t, uint32_t> max_resolution() const { 57 return max_resolution_; 58 } 59 60 DrmConnector *GetConnectorForDisplay(int display) const; 61 DrmConnector *GetWritebackConnectorForDisplay(int display) const; 62 DrmConnector *AvailableWritebackConnector(int display) const; 63 DrmCrtc *GetCrtcForDisplay(int display) const; 64 DrmPlane *GetPlane(uint32_t id) const; 65 DrmEventListener *event_listener(); 66 67 int GetPlaneProperty(const DrmPlane &plane, const char *prop_name, 68 DrmProperty *property); 69 int GetCrtcProperty(const DrmCrtc &crtc, const char *prop_name, 70 DrmProperty *property); 71 int GetConnectorProperty(const DrmConnector &connector, const char *prop_name, 72 DrmProperty *property); 73 74 const std::string GetName() const; 75 76 const std::vector<std::unique_ptr<DrmCrtc>> &crtcs() const; 77 uint32_t next_mode_id(); 78 79 int CreatePropertyBlob(void *data, size_t length, uint32_t *blob_id); 80 int DestroyPropertyBlob(uint32_t blob_id); 81 bool HandlesDisplay(int display) const; RegisterHotplugHandler(DrmEventHandler * handler)82 void RegisterHotplugHandler(DrmEventHandler *handler) { 83 event_listener_.RegisterHotplugHandler(handler); 84 } 85 86 private: 87 int TryEncoderForDisplay(int display, DrmEncoder *enc); 88 int GetProperty(uint32_t obj_id, uint32_t obj_type, const char *prop_name, 89 DrmProperty *property); 90 91 int CreateDisplayPipe(DrmConnector *connector); 92 int AttachWriteback(DrmConnector *display_conn); 93 94 UniqueFd fd_; 95 uint32_t mode_id_ = 0; 96 97 std::vector<std::unique_ptr<DrmConnector>> connectors_; 98 std::vector<std::unique_ptr<DrmConnector>> writeback_connectors_; 99 std::vector<std::unique_ptr<DrmEncoder>> encoders_; 100 std::vector<std::unique_ptr<DrmCrtc>> crtcs_; 101 std::vector<std::unique_ptr<DrmPlane>> planes_; 102 DrmEventListener event_listener_; 103 104 std::pair<uint32_t, uint32_t> min_resolution_; 105 std::pair<uint32_t, uint32_t> max_resolution_; 106 std::map<int, int> displays_; 107 }; 108 } // namespace android 109 110 #endif // ANDROID_DRM_H_ 111