1 /* 2 * Copyright (C) 2016 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 #pragma once 18 19 #include <memory> 20 21 #include "guest/hals/hwcomposer/common/gralloc_utils.h" 22 #include "guest/hals/hwcomposer/common/hwcomposer.h" 23 #include "guest/hals/hwcomposer/common/screen_view.h" 24 25 namespace cuttlefish { 26 27 class BaseComposer { 28 public: 29 BaseComposer(std::unique_ptr<ScreenView> screen_view); 30 virtual ~BaseComposer() = default; 31 32 virtual bool IsValidLayer(const hwc_layer_1_t& layer); 33 // Sets the composition type of each layer and returns the number of layers 34 // to be composited by the hwcomposer. 35 virtual int PrepareLayers(size_t num_layers, hwc_layer_1_t* layers); 36 // Returns 0 if successful. 37 virtual int SetLayers(size_t num_layers, hwc_layer_1_t* layers); 38 virtual void Dump(char* buff, int buff_len); 39 x_res()40 int32_t x_res() { return screen_view_->x_res(); } y_res()41 int32_t y_res() { return screen_view_->y_res(); } dpi()42 int32_t dpi() { return screen_view_->dpi(); } refresh_rate()43 int32_t refresh_rate() { return screen_view_->refresh_rate(); } 44 45 protected: 46 std::unique_ptr<ScreenView> screen_view_; 47 Gralloc gralloc_; 48 49 private: 50 // Returns buffer offset or negative on error. 51 int PostFrameBufferTarget(buffer_handle_t handle); 52 }; 53 } // namespace cuttlefish 54