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      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 "drmcompositor.h"
     21 #include "drmconnector.h"
     22 #include "drmcrtc.h"
     23 #include "drmencoder.h"
     24 #include "drmeventlistener.h"
     25 #include "drmplane.h"
     26 
     27 #include <stdint.h>
     28 
     29 namespace android {
     30 
     31 class DrmResources {
     32  public:
     33   DrmResources();
     34   ~DrmResources();
     35 
     36   int Init();
     37 
     38   int fd() const {
     39     return fd_.get();
     40   }
     41 
     42   const std::vector<std::unique_ptr<DrmConnector>> &connectors() const {
     43     return connectors_;
     44   }
     45 
     46   const std::vector<std::unique_ptr<DrmPlane>> &planes() const {
     47     return planes_;
     48   }
     49 
     50   DrmConnector *GetConnectorForDisplay(int display) const;
     51   DrmCrtc *GetCrtcForDisplay(int display) const;
     52   DrmPlane *GetPlane(uint32_t id) const;
     53   DrmCompositor *compositor();
     54   DrmEventListener *event_listener();
     55 
     56   int GetPlaneProperty(const DrmPlane &plane, const char *prop_name,
     57                        DrmProperty *property);
     58   int GetCrtcProperty(const DrmCrtc &crtc, const char *prop_name,
     59                       DrmProperty *property);
     60   int GetConnectorProperty(const DrmConnector &connector, const char *prop_name,
     61                            DrmProperty *property);
     62 
     63   uint32_t next_mode_id();
     64   int SetDisplayActiveMode(int display, const DrmMode &mode);
     65   int SetDpmsMode(int display, uint64_t mode);
     66 
     67   int CreatePropertyBlob(void *data, size_t length, uint32_t *blob_id);
     68   int DestroyPropertyBlob(uint32_t blob_id);
     69 
     70  private:
     71   int TryEncoderForDisplay(int display, DrmEncoder *enc);
     72   int GetProperty(uint32_t obj_id, uint32_t obj_type, const char *prop_name,
     73                   DrmProperty *property);
     74 
     75   int CreateDisplayPipe(DrmConnector *connector);
     76 
     77   UniqueFd fd_;
     78   uint32_t mode_id_ = 0;
     79 
     80   std::vector<std::unique_ptr<DrmConnector>> connectors_;
     81   std::vector<std::unique_ptr<DrmEncoder>> encoders_;
     82   std::vector<std::unique_ptr<DrmCrtc>> crtcs_;
     83   std::vector<std::unique_ptr<DrmPlane>> planes_;
     84   DrmCompositor compositor_;
     85   DrmEventListener event_listener_;
     86 };
     87 }
     88 
     89 #endif  // ANDROID_DRM_H_
     90