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 "DrmPresenter.h" 27 #include "FrameComposer.h" 28 #include "HostConnection.h" 29 30 namespace aidl::android::hardware::graphics::composer3::impl { 31 32 class HostFrameComposer : public FrameComposer { 33 public: 34 HostFrameComposer() = default; 35 36 HostFrameComposer(const HostFrameComposer&) = delete; 37 HostFrameComposer& operator=(const HostFrameComposer&) = delete; 38 39 HostFrameComposer(HostFrameComposer&&) = delete; 40 HostFrameComposer& operator=(HostFrameComposer&&) = delete; 41 42 HWC3::Error init() override; 43 44 HWC3::Error registerOnHotplugCallback(const HotplugCallback& cb) override; 45 46 HWC3::Error unregisterOnHotplugCallback() override; 47 48 HWC3::Error onDisplayCreate(Display* display) override; 49 50 HWC3::Error onDisplayDestroy(Display* display) override; 51 52 HWC3::Error onDisplayClientTargetSet(Display* display) override; 53 54 // Determines if this composer can compose the given layers on the given 55 // display and requests changes for layers that can't not be composed. 56 HWC3::Error validateDisplay(Display* display, 57 DisplayChanges* outChanges) override; 58 59 // Performs the actual composition of layers and presents the composed result 60 // to the display. 61 HWC3::Error presentDisplay( 62 Display* display, ::android::base::unique_fd* outDisplayFence, 63 std::unordered_map<int64_t, ::android::base::unique_fd>* outLayerFences) 64 override; 65 66 HWC3::Error onActiveConfigChange(Display* display) override; 67 getDrmPresenter()68 const DrmPresenter* getDrmPresenter() const override { 69 if (mDrmPresenter) { 70 return &*mDrmPresenter; 71 } 72 return nullptr; 73 } 74 75 private: 76 HWC3::Error createHostComposerDisplayInfo(Display* display, 77 uint32_t hostDisplayId); 78 79 void post(HostConnection* hostCon, ExtendedRCEncoderContext* rcEnc, 80 buffer_handle_t h); 81 82 bool mIsMinigbm = false; 83 84 bool mUseAngle = false; 85 86 int mSyncDeviceFd = -1; 87 88 struct HostComposerDisplayInfo { 89 uint32_t hostDisplayId = 0; 90 91 // Additional per display buffer for the composition result. 92 const native_handle_t* compositionResultBuffer = nullptr; 93 94 // Drm info for the additional composition result buffer. 95 std::shared_ptr<DrmBuffer> compositionResultDrmBuffer; 96 97 // Drm info for the displays client target buffer. 98 std::shared_ptr<DrmBuffer> clientTargetDrmBuffer; 99 }; 100 101 std::unordered_map<int64_t, HostComposerDisplayInfo> mDisplayInfos; 102 103 std::optional<DrmPresenter> mDrmPresenter; 104 }; 105 106 } // namespace aidl::android::hardware::graphics::composer3::impl 107 108 #endif 109