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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   std::pair<uint32_t, uint32_t> min_resolution() const {
     51     return min_resolution_;
     52   }
     53 
     54   std::pair<uint32_t, uint32_t> max_resolution() const {
     55     return max_resolution_;
     56   }
     57 
     58   DrmConnector *GetConnectorForDisplay(int display) const;
     59   DrmCrtc *GetCrtcForDisplay(int display) const;
     60   DrmPlane *GetPlane(uint32_t id) const;
     61   DrmCompositor *compositor();
     62   DrmEventListener *event_listener();
     63 
     64   int GetPlaneProperty(const DrmPlane &plane, const char *prop_name,
     65                        DrmProperty *property);
     66   int GetCrtcProperty(const DrmCrtc &crtc, const char *prop_name,
     67                       DrmProperty *property);
     68   int GetConnectorProperty(const DrmConnector &connector, const char *prop_name,
     69                            DrmProperty *property);
     70 
     71   uint32_t next_mode_id();
     72   int SetDisplayActiveMode(int display, const DrmMode &mode);
     73   int SetDpmsMode(int display, uint64_t mode);
     74 
     75   int CreatePropertyBlob(void *data, size_t length, uint32_t *blob_id);
     76   int DestroyPropertyBlob(uint32_t blob_id);
     77 
     78  private:
     79   int TryEncoderForDisplay(int display, DrmEncoder *enc);
     80   int GetProperty(uint32_t obj_id, uint32_t obj_type, const char *prop_name,
     81                   DrmProperty *property);
     82 
     83   int CreateDisplayPipe(DrmConnector *connector);
     84 
     85   UniqueFd fd_;
     86   uint32_t mode_id_ = 0;
     87 
     88   std::vector<std::unique_ptr<DrmConnector>> connectors_;
     89   std::vector<std::unique_ptr<DrmEncoder>> encoders_;
     90   std::vector<std::unique_ptr<DrmCrtc>> crtcs_;
     91   std::vector<std::unique_ptr<DrmPlane>> planes_;
     92   DrmCompositor compositor_;
     93   DrmEventListener event_listener_;
     94 
     95   std::pair<uint32_t, uint32_t> min_resolution_;
     96   std::pair<uint32_t, uint32_t> max_resolution_;
     97 };
     98 }
     99 
    100 #endif  // ANDROID_DRM_H_
    101