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_HOSTFRAMECOMPOSER_H 18 #define ANDROID_HWC_HOSTFRAMECOMPOSER_H 19 20 #include <android-base/unique_fd.h> 21 22 #include <optional> 23 #include <tuple> 24 25 #include "Common.h" 26 #include "DrmClient.h" 27 #include "DrmSwapchain.h" 28 #include "FrameComposer.h" 29 #include "HostConnection.h" 30 31 namespace aidl::android::hardware::graphics::composer3::impl { 32 33 class HostFrameComposer : public FrameComposer { 34 public: 35 HostFrameComposer() = default; 36 37 HostFrameComposer(const HostFrameComposer&) = delete; 38 HostFrameComposer& operator=(const HostFrameComposer&) = delete; 39 40 HostFrameComposer(HostFrameComposer&&) = delete; 41 HostFrameComposer& operator=(HostFrameComposer&&) = delete; 42 43 HWC3::Error init() override; 44 45 HWC3::Error registerOnHotplugCallback(const HotplugCallback& cb) override; 46 47 HWC3::Error unregisterOnHotplugCallback() override; 48 49 HWC3::Error onDisplayCreate(Display* display) override; 50 51 HWC3::Error onDisplayDestroy(Display* display) override; 52 53 HWC3::Error onDisplayClientTargetSet(Display* display) override; 54 55 // Determines if this composer can compose the given layers on the given 56 // display and requests changes for layers that can't not be composed. 57 HWC3::Error validateDisplay(Display* display, 58 DisplayChanges* outChanges) override; 59 60 // Performs the actual composition of layers and presents the composed result 61 // to the display. 62 HWC3::Error presentDisplay( 63 Display* display, ::android::base::unique_fd* outDisplayFence, 64 std::unordered_map<int64_t, ::android::base::unique_fd>* outLayerFences) 65 override; 66 67 HWC3::Error onActiveConfigChange(Display* display) override; 68 getDrmPresenter()69 const DrmClient* getDrmPresenter() const override { 70 if (mDrmClient) { 71 return &*mDrmClient; 72 } 73 return nullptr; 74 } 75 76 private: 77 HWC3::Error createHostComposerDisplayInfo(Display* display, 78 uint32_t hostDisplayId); 79 80 void post(HostConnection* hostCon, ExtendedRCEncoderContext* rcEnc, 81 buffer_handle_t h); 82 83 bool mIsMinigbm = false; 84 85 bool mUseAngle = false; 86 87 int mSyncDeviceFd = -1; 88 89 struct HostComposerDisplayInfo { 90 uint32_t hostDisplayId = 0; 91 std::unique_ptr<DrmSwapchain> swapchain = {}; 92 // Drm info for the displays client target buffer. 93 std::shared_ptr<DrmBuffer> clientTargetDrmBuffer; 94 }; 95 96 std::unordered_map<int64_t, HostComposerDisplayInfo> mDisplayInfos; 97 98 std::optional<DrmClient> mDrmClient; 99 }; 100 101 } // namespace aidl::android::hardware::graphics::composer3::impl 102 103 #endif 104