| /* |
| * Copyright 2021 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_GUESTCOMPOSER_H |
| #define ANDROID_HWC_GUESTCOMPOSER_H |
| |
| #include "Common.h" |
| #include "Composer.h" |
| #include "Display.h" |
| #include "DrmPresenter.h" |
| #include "Gralloc.h" |
| #include "Layer.h" |
| |
| namespace android { |
| |
| class GuestComposer : public Composer { |
| public: |
| GuestComposer(DrmPresenter* drmPresenter); |
| |
| GuestComposer(const GuestComposer&) = delete; |
| GuestComposer& operator=(const GuestComposer&) = delete; |
| |
| GuestComposer(GuestComposer&&) = delete; |
| GuestComposer& operator=(GuestComposer&&) = delete; |
| |
| HWC2::Error init() override; |
| |
| HWC2::Error onDisplayCreate(Display*) override; |
| |
| HWC2::Error onDisplayDestroy(Display*) override; |
| |
| HWC2::Error onDisplayClientTargetSet(Display*) override { |
| return HWC2::Error::None; |
| } |
| |
| // Determines if this composer can compose the given layers on the given |
| // display and requests changes for layers that can't not be composed. |
| HWC2::Error validateDisplay( |
| Display* display, std::unordered_map<hwc2_layer_t, HWC2::Composition>* |
| outLayerCompositionChanges) override; |
| |
| // Performs the actual composition of layers and presents the composed result |
| // to the display. |
| std::tuple<HWC2::Error, base::unique_fd> presentDisplay( |
| Display* display) override; |
| |
| HWC2::Error onActiveConfigChange(Display* /*display*/) override { |
| return HWC2::Error::None; |
| }; |
| |
| private: |
| struct DisplayConfig { |
| int width; |
| int height; |
| int dpiX; |
| int dpiY; |
| int refreshRateHz; |
| }; |
| |
| HWC2::Error getDisplayConfigsFromDeviceConfig( |
| std::vector<DisplayConfig>* configs); |
| |
| HWC2::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. |
| HWC2::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 GuestComposerDisplayInfo { |
| // Additional per display buffer for the composition result. |
| buffer_handle_t compositionResultBuffer = nullptr; |
| |
| std::unique_ptr<DrmBuffer> compositionResultDrmBuffer; |
| }; |
| |
| std::unordered_map<hwc2_display_t, GuestComposerDisplayInfo> mDisplayInfos; |
| |
| Gralloc mGralloc; |
| |
| DrmPresenter* mDrmPresenter; |
| |
| // 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); |
| |
| HWC2::Error applyColorTransformToRGBA( |
| const ColorTransformWithMatrix& colotTransform, // |
| 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 android |
| |
| #endif |