| /* |
| * Copyright 2022 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ANDROID_HWC_GUESTFRAMECOMPOSER_H |
| #define ANDROID_HWC_GUESTFRAMECOMPOSER_H |
| |
| #include "Common.h" |
| #include "Display.h" |
| #include "DrmClient.h" |
| #include "FrameComposer.h" |
| #include "Gralloc.h" |
| #include "Layer.h" |
| |
| namespace aidl::android::hardware::graphics::composer3::impl { |
| |
| class GuestFrameComposer : public FrameComposer { |
| public: |
| GuestFrameComposer() = default; |
| |
| GuestFrameComposer(const GuestFrameComposer&) = delete; |
| GuestFrameComposer& operator=(const GuestFrameComposer&) = delete; |
| |
| GuestFrameComposer(GuestFrameComposer&&) = delete; |
| GuestFrameComposer& operator=(GuestFrameComposer&&) = delete; |
| |
| HWC3::Error init() override; |
| |
| HWC3::Error registerOnHotplugCallback(const HotplugCallback& cb) override; |
| |
| HWC3::Error unregisterOnHotplugCallback() override; |
| |
| HWC3::Error onDisplayCreate(Display*) override; |
| |
| HWC3::Error onDisplayDestroy(Display*) override; |
| |
| HWC3::Error onDisplayClientTargetSet(Display*) override; |
| |
| // Determines if this composer can compose the given layers on the given |
| // display and requests changes for layers that can't not be composed. |
| HWC3::Error validateDisplay(Display* display, |
| DisplayChanges* outChanges) override; |
| |
| // Performs the actual composition of layers and presents the composed result |
| // to the display. |
| HWC3::Error presentDisplay( |
| Display* display, ::android::base::unique_fd* outDisplayFence, |
| std::unordered_map<int64_t, ::android::base::unique_fd>* outLayerFences) |
| override; |
| |
| HWC3::Error onActiveConfigChange(Display* /*display*/) override; |
| |
| const DrmClient* getDrmPresenter() const override { |
| return &mDrmClient; |
| } |
| |
| private: |
| struct DisplayConfig { |
| int width; |
| int height; |
| int dpiX; |
| int dpiY; |
| int refreshRateHz; |
| }; |
| |
| HWC3::Error getDisplayConfigsFromDeviceConfig( |
| std::vector<DisplayConfig>* configs); |
| |
| HWC3::Error getDisplayConfigsFromSystemProp( |
| std::vector<DisplayConfig>* configs); |
| |
| // Returns true if the given layer's buffer has supported format. |
| bool canComposeLayer(Layer* layer); |
| |
| // Composes the given layer into the given destination buffer. |
| HWC3::Error composeLayerInto(Layer* layer, std::uint8_t* dstBuffer, |
| std::uint32_t dstBufferWidth, |
| std::uint32_t dstBufferHeight, |
| std::uint32_t dstBufferStrideBytes, |
| std::uint32_t dstBufferBytesPerPixel); |
| |
| struct DisplayInfo { |
| // Additional per display buffer for the composition result. |
| buffer_handle_t compositionResultBuffer = nullptr; |
| |
| std::shared_ptr<DrmBuffer> compositionResultDrmBuffer; |
| }; |
| |
| std::unordered_map<int64_t, DisplayInfo> mDisplayInfos; |
| |
| Gralloc mGralloc; |
| |
| DrmClient mDrmClient; |
| |
| // Cuttlefish on QEMU does not have a display. Disable presenting to avoid |
| // spamming logcat with DRM commit failures. |
| bool mPresentDisabled = false; |
| |
| uint8_t* getRotatingScratchBuffer(std::size_t neededSize, |
| std::uint32_t order); |
| uint8_t* getSpecialScratchBuffer(std::size_t neededSize); |
| |
| HWC3::Error applyColorTransformToRGBA( |
| const std::array<float, 16>& colorTransform, // |
| std::uint8_t* buffer, // |
| std::uint32_t bufferWidth, // |
| std::uint32_t bufferHeight, // |
| std::uint32_t bufferStrideBytes); |
| |
| std::vector<uint8_t> mScratchBuffer; |
| std::vector<uint8_t> mSpecialScratchBuffer; |
| }; |
| |
| } // namespace aidl::android::hardware::graphics::composer3::impl |
| |
| #endif |