1 /* 2 * Copyright 2022 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_HWC_NOOPFRAMECOMPOSER_H 18 #define ANDROID_HWC_NOOPFRAMECOMPOSER_H 19 20 #include "Common.h" 21 #include "Display.h" 22 #include "DrmClient.h" 23 #include "FrameComposer.h" 24 #include "Gralloc.h" 25 #include "Layer.h" 26 27 namespace aidl::android::hardware::graphics::composer3::impl { 28 29 class NoOpFrameComposer : public FrameComposer { 30 public: 31 NoOpFrameComposer() = default; 32 33 NoOpFrameComposer(const NoOpFrameComposer&) = delete; 34 NoOpFrameComposer& operator=(const NoOpFrameComposer&) = delete; 35 36 NoOpFrameComposer(NoOpFrameComposer&&) = delete; 37 NoOpFrameComposer& operator=(NoOpFrameComposer&&) = delete; 38 39 HWC3::Error init() override; 40 41 HWC3::Error registerOnHotplugCallback(const HotplugCallback& cb) override; 42 43 HWC3::Error unregisterOnHotplugCallback() override; 44 45 HWC3::Error onDisplayCreate(Display*) override; 46 47 HWC3::Error onDisplayDestroy(Display*) override; 48 49 HWC3::Error onDisplayClientTargetSet(Display*) override; 50 51 // Determines if this composer can compose the given layers on the given 52 // display and requests changes for layers that can't not be composed. 53 HWC3::Error validateDisplay(Display* display, DisplayChanges* outChanges) override; 54 55 // Performs the actual composition of layers and presents the composed result 56 // to the display. 57 HWC3::Error presentDisplay( 58 Display* display, ::android::base::unique_fd* outDisplayFence, 59 std::unordered_map<int64_t, ::android::base::unique_fd>* outLayerFences) override; 60 61 HWC3::Error onActiveConfigChange(Display* /*display*/) override; 62 }; 63 64 } // namespace aidl::android::hardware::graphics::composer3::impl 65 66 #endif 67