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 "drmconnector.h" 21 #include "drmcrtc.h" 22 #include "drmencoder.h" 23 #include "drmeventlistener.h" 24 #include "drmplane.h" 25 26 #include <map> 27 #include <stdint.h> 28 #include <tuple> 29 30 namespace android { 31 32 class DrmDevice { 33 public: 34 DrmDevice(); 35 ~DrmDevice(); 36 37 std::tuple<int, int> Init(const char *path, int num_displays); 38 fd()39 int fd() const { 40 return fd_.get(); 41 } 42 connectors()43 const std::vector<std::unique_ptr<DrmConnector>> &connectors() const { 44 return connectors_; 45 } 46 planes()47 const std::vector<std::unique_ptr<DrmPlane>> &planes() const { 48 return planes_; 49 } 50 min_resolution()51 std::pair<uint32_t, uint32_t> min_resolution() const { 52 return min_resolution_; 53 } 54 max_resolution()55 std::pair<uint32_t, uint32_t> max_resolution() const { 56 return max_resolution_; 57 } 58 59 DrmConnector *GetConnectorForDisplay(int display) const; 60 DrmConnector *GetWritebackConnectorForDisplay(int display) const; 61 DrmConnector *AvailableWritebackConnector(int display) const; 62 DrmCrtc *GetCrtcForDisplay(int display) const; 63 DrmPlane *GetPlane(uint32_t id) const; 64 DrmEventListener *event_listener(); 65 66 int GetPlaneProperty(const DrmPlane &plane, const char *prop_name, 67 DrmProperty *property); 68 int GetCrtcProperty(const DrmCrtc &crtc, const char *prop_name, 69 DrmProperty *property); 70 int GetConnectorProperty(const DrmConnector &connector, const char *prop_name, 71 DrmProperty *property); 72 int UpdateCrtcProperty(const DrmCrtc &crtc, DrmProperty *property); 73 74 const std::vector<std::unique_ptr<DrmCrtc>> &crtcs() const; 75 uint32_t next_mode_id(); 76 77 int CreatePropertyBlob(void *data, size_t length, uint32_t *blob_id); 78 int DestroyPropertyBlob(uint32_t blob_id); 79 bool HandlesDisplay(int display) const; RegisterHotplugHandler(DrmEventHandler * handler)80 void RegisterHotplugHandler(DrmEventHandler *handler) { 81 event_listener_.RegisterHotplugHandler(handler); 82 } 83 84 private: 85 int TryEncoderForDisplay(int display, DrmEncoder *enc); 86 int GetProperty(uint32_t obj_id, uint32_t obj_type, const char *prop_name, 87 DrmProperty *property); 88 89 int CreateDisplayPipe(DrmConnector *connector); 90 int AttachWriteback(DrmConnector *display_conn); 91 92 UniqueFd fd_; 93 uint32_t mode_id_ = 0; 94 95 std::vector<std::unique_ptr<DrmConnector>> connectors_; 96 std::vector<std::unique_ptr<DrmConnector>> writeback_connectors_; 97 std::vector<std::unique_ptr<DrmEncoder>> encoders_; 98 std::vector<std::unique_ptr<DrmCrtc>> crtcs_; 99 std::vector<std::unique_ptr<DrmPlane>> planes_; 100 DrmEventListener event_listener_; 101 102 std::pair<uint32_t, uint32_t> min_resolution_; 103 std::pair<uint32_t, uint32_t> max_resolution_; 104 std::map<int, int> displays_; 105 }; 106 } // namespace android 107 108 #endif // ANDROID_DRM_H_ 109