| /* | 
 |  * Copyright 2015 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. | 
 |  */ | 
 |  | 
 | // #define LOG_NDEBUG 0 | 
 |  | 
 | #undef LOG_TAG | 
 | #define LOG_TAG "HWC2" | 
 | #define ATRACE_TAG ATRACE_TAG_GRAPHICS | 
 |  | 
 | #include "HWC2.h" | 
 | #include "ComposerHal.h" | 
 |  | 
 | #include <ui/Fence.h> | 
 | #include <ui/FloatRect.h> | 
 | #include <ui/GraphicBuffer.h> | 
 | #include <ui/Region.h> | 
 |  | 
 | #include <android/configuration.h> | 
 |  | 
 | #include <inttypes.h> | 
 | #include <algorithm> | 
 | #include <iterator> | 
 | #include <set> | 
 |  | 
 | using android::Fence; | 
 | using android::FloatRect; | 
 | using android::GraphicBuffer; | 
 | using android::HdrCapabilities; | 
 | using android::HdrMetadata; | 
 | using android::Rect; | 
 | using android::Region; | 
 | using android::sp; | 
 | using android::hardware::Return; | 
 | using android::hardware::Void; | 
 |  | 
 | namespace HWC2 { | 
 |  | 
 | namespace Hwc2 = android::Hwc2; | 
 | using android::ui::ColorMode; | 
 | using android::ui::Dataspace; | 
 | using android::ui::PixelFormat; | 
 | using android::ui::RenderIntent; | 
 |  | 
 | namespace { | 
 |  | 
 | inline bool hasMetadataKey(const std::set<Hwc2::PerFrameMetadataKey>& keys, | 
 |                            const Hwc2::PerFrameMetadataKey& key) { | 
 |     return keys.find(key) != keys.end(); | 
 | } | 
 |  | 
 | class ComposerCallbackBridge : public Hwc2::IComposerCallback { | 
 | public: | 
 |     ComposerCallbackBridge(ComposerCallback* callback, int32_t sequenceId) | 
 |             : mCallback(callback), mSequenceId(sequenceId) {} | 
 |  | 
 |     Return<void> onHotplug(Hwc2::Display display, | 
 |                            IComposerCallback::Connection conn) override | 
 |     { | 
 |         HWC2::Connection connection = static_cast<HWC2::Connection>(conn); | 
 |         mCallback->onHotplugReceived(mSequenceId, display, connection); | 
 |         return Void(); | 
 |     } | 
 |  | 
 |     Return<void> onRefresh(Hwc2::Display display) override | 
 |     { | 
 |         mCallback->onRefreshReceived(mSequenceId, display); | 
 |         return Void(); | 
 |     } | 
 |  | 
 |     Return<void> onVsync(Hwc2::Display display, int64_t timestamp) override | 
 |     { | 
 |         mCallback->onVsyncReceived(mSequenceId, display, timestamp); | 
 |         return Void(); | 
 |     } | 
 |  | 
 | private: | 
 |     ComposerCallback* mCallback; | 
 |     int32_t mSequenceId; | 
 | }; | 
 |  | 
 | } // namespace anonymous | 
 |  | 
 |  | 
 | // Device methods | 
 |  | 
 | Device::Device(std::unique_ptr<android::Hwc2::Composer> composer) : mComposer(std::move(composer)) { | 
 |     loadCapabilities(); | 
 | } | 
 |  | 
 | void Device::registerCallback(ComposerCallback* callback, int32_t sequenceId) { | 
 |     if (mRegisteredCallback) { | 
 |         ALOGW("Callback already registered. Ignored extra registration " | 
 |                 "attempt."); | 
 |         return; | 
 |     } | 
 |     mRegisteredCallback = true; | 
 |     sp<ComposerCallbackBridge> callbackBridge( | 
 |             new ComposerCallbackBridge(callback, sequenceId)); | 
 |     mComposer->registerCallback(callbackBridge); | 
 | } | 
 |  | 
 | // Required by HWC2 device | 
 |  | 
 | std::string Device::dump() const | 
 | { | 
 |     return mComposer->dumpDebugInfo(); | 
 | } | 
 |  | 
 | uint32_t Device::getMaxVirtualDisplayCount() const | 
 | { | 
 |     return mComposer->getMaxVirtualDisplayCount(); | 
 | } | 
 |  | 
 | Error Device::getDisplayIdentificationData(hwc2_display_t hwcDisplayId, uint8_t* outPort, | 
 |                                            std::vector<uint8_t>* outData) const { | 
 |     auto intError = mComposer->getDisplayIdentificationData(hwcDisplayId, outPort, outData); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Device::createVirtualDisplay(uint32_t width, uint32_t height, | 
 |         PixelFormat* format, Display** outDisplay) | 
 | { | 
 |     ALOGI("Creating virtual display"); | 
 |  | 
 |     hwc2_display_t displayId = 0; | 
 |     auto intError = mComposer->createVirtualDisplay(width, height, | 
 |             format, &displayId); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     auto display = std::make_unique<impl::Display>(*mComposer.get(), mCapabilities, displayId, | 
 |                                                    DisplayType::Virtual); | 
 |     display->setConnected(true); | 
 |     *outDisplay = display.get(); | 
 |     mDisplays.emplace(displayId, std::move(display)); | 
 |     ALOGI("Created virtual display"); | 
 |     return Error::None; | 
 | } | 
 |  | 
 | void Device::destroyDisplay(hwc2_display_t displayId) | 
 | { | 
 |     ALOGI("Destroying display %" PRIu64, displayId); | 
 |     mDisplays.erase(displayId); | 
 | } | 
 |  | 
 | void Device::onHotplug(hwc2_display_t displayId, Connection connection) { | 
 |     if (connection == Connection::Connected) { | 
 |         // If we get a hotplug connected event for a display we already have, | 
 |         // destroy the display and recreate it. This will force us to requery | 
 |         // the display params and recreate all layers on that display. | 
 |         auto oldDisplay = getDisplayById(displayId); | 
 |         if (oldDisplay != nullptr && oldDisplay->isConnected()) { | 
 |             ALOGI("Hotplug connecting an already connected display." | 
 |                     " Clearing old display state."); | 
 |         } | 
 |         mDisplays.erase(displayId); | 
 |  | 
 |         DisplayType displayType; | 
 |         auto intError = mComposer->getDisplayType(displayId, | 
 |                 reinterpret_cast<Hwc2::IComposerClient::DisplayType *>( | 
 |                         &displayType)); | 
 |         auto error = static_cast<Error>(intError); | 
 |         if (error != Error::None) { | 
 |             ALOGE("getDisplayType(%" PRIu64 ") failed: %s (%d). " | 
 |                     "Aborting hotplug attempt.", | 
 |                     displayId, to_string(error).c_str(), intError); | 
 |             return; | 
 |         } | 
 |  | 
 |         auto newDisplay = std::make_unique<impl::Display>(*mComposer.get(), mCapabilities, | 
 |                                                           displayId, displayType); | 
 |         newDisplay->setConnected(true); | 
 |         mDisplays.emplace(displayId, std::move(newDisplay)); | 
 |     } else if (connection == Connection::Disconnected) { | 
 |         // The display will later be destroyed by a call to | 
 |         // destroyDisplay(). For now we just mark it disconnected. | 
 |         auto display = getDisplayById(displayId); | 
 |         if (display) { | 
 |             display->setConnected(false); | 
 |         } else { | 
 |             ALOGW("Attempted to disconnect unknown display %" PRIu64, | 
 |                   displayId); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | // Other Device methods | 
 |  | 
 | Display* Device::getDisplayById(hwc2_display_t id) { | 
 |     auto iter = mDisplays.find(id); | 
 |     return iter == mDisplays.end() ? nullptr : iter->second.get(); | 
 | } | 
 |  | 
 | // Device initialization methods | 
 |  | 
 | void Device::loadCapabilities() | 
 | { | 
 |     static_assert(sizeof(Capability) == sizeof(int32_t), | 
 |             "Capability size has changed"); | 
 |     auto capabilities = mComposer->getCapabilities(); | 
 |     for (auto capability : capabilities) { | 
 |         mCapabilities.emplace(static_cast<Capability>(capability)); | 
 |     } | 
 | } | 
 |  | 
 | Error Device::flushCommands() | 
 | { | 
 |     return static_cast<Error>(mComposer->executeCommands()); | 
 | } | 
 |  | 
 | // Display methods | 
 | Display::~Display() = default; | 
 |  | 
 | Display::Config::Config(Display& display, hwc2_config_t id) | 
 |       : mDisplay(display), | 
 |         mId(id), | 
 |         mWidth(-1), | 
 |         mHeight(-1), | 
 |         mVsyncPeriod(-1), | 
 |         mDpiX(-1), | 
 |         mDpiY(-1) {} | 
 |  | 
 | Display::Config::Builder::Builder(Display& display, hwc2_config_t id) | 
 |       : mConfig(new Config(display, id)) {} | 
 |  | 
 | float Display::Config::Builder::getDefaultDensity() { | 
 |     // Default density is based on TVs: 1080p displays get XHIGH density, lower- | 
 |     // resolution displays get TV density. Maybe eventually we'll need to update | 
 |     // it for 4k displays, though hopefully those will just report accurate DPI | 
 |     // information to begin with. This is also used for virtual displays and | 
 |     // older HWC implementations, so be careful about orientation. | 
 |  | 
 |     auto longDimension = std::max(mConfig->mWidth, mConfig->mHeight); | 
 |     if (longDimension >= 1080) { | 
 |         return ACONFIGURATION_DENSITY_XHIGH; | 
 |     } else { | 
 |         return ACONFIGURATION_DENSITY_TV; | 
 |     } | 
 | } | 
 |  | 
 | namespace impl { | 
 | Display::Display(android::Hwc2::Composer& composer, | 
 |                  const std::unordered_set<Capability>& capabilities, hwc2_display_t id, | 
 |                  DisplayType type) | 
 |       : mComposer(composer), | 
 |         mCapabilities(capabilities), | 
 |         mId(id), | 
 |         mIsConnected(false), | 
 |         mType(type) { | 
 |     std::vector<Hwc2::DisplayCapability> tmpCapabilities; | 
 |     auto error = static_cast<Error>(mComposer.getDisplayCapabilities(mId, &tmpCapabilities)); | 
 |     if (error == Error::None) { | 
 |         for (auto capability : tmpCapabilities) { | 
 |             mDisplayCapabilities.emplace(static_cast<DisplayCapability>(capability)); | 
 |         } | 
 |     } else if (error == Error::Unsupported) { | 
 |         if (capabilities.count(Capability::SkipClientColorTransform)) { | 
 |             mDisplayCapabilities.emplace(DisplayCapability::SkipClientColorTransform); | 
 |         } | 
 |         bool dozeSupport = false; | 
 |         error = static_cast<Error>(mComposer.getDozeSupport(mId, &dozeSupport)); | 
 |         if (error == Error::None && dozeSupport) { | 
 |             mDisplayCapabilities.emplace(DisplayCapability::Doze); | 
 |         } | 
 |         bool brightnessSupport = false; | 
 |         error = static_cast<Error>(mComposer.getDisplayBrightnessSupport(mId, &brightnessSupport)); | 
 |         if (error == Error::None && brightnessSupport) { | 
 |             mDisplayCapabilities.emplace(DisplayCapability::Brightness); | 
 |         } | 
 |     } | 
 |     ALOGV("Created display %" PRIu64, id); | 
 | } | 
 |  | 
 | Display::~Display() { | 
 |     mLayers.clear(); | 
 |  | 
 |     if (mType == DisplayType::Virtual) { | 
 |         ALOGV("Destroying virtual display"); | 
 |         auto intError = mComposer.destroyVirtualDisplay(mId); | 
 |         auto error = static_cast<Error>(intError); | 
 |         ALOGE_IF(error != Error::None, "destroyVirtualDisplay(%" PRIu64 | 
 |                 ") failed: %s (%d)", mId, to_string(error).c_str(), intError); | 
 |     } else if (mType == DisplayType::Physical) { | 
 |         auto error = setVsyncEnabled(HWC2::Vsync::Disable); | 
 |         if (error != Error::None) { | 
 |             ALOGE("~Display: Failed to disable vsync for display %" PRIu64 | 
 |                     ": %s (%d)", mId, to_string(error).c_str(), | 
 |                     static_cast<int32_t>(error)); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | // Required by HWC2 display | 
 | Error Display::acceptChanges() | 
 | { | 
 |     auto intError = mComposer.acceptDisplayChanges(mId); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::createLayer(HWC2::Layer** outLayer) { | 
 |     if (!outLayer) { | 
 |         return Error::BadParameter; | 
 |     } | 
 |     hwc2_layer_t layerId = 0; | 
 |     auto intError = mComposer.createLayer(mId, &layerId); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     auto layer = std::make_unique<impl::Layer>(mComposer, mCapabilities, mId, layerId); | 
 |     *outLayer = layer.get(); | 
 |     mLayers.emplace(layerId, std::move(layer)); | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::destroyLayer(HWC2::Layer* layer) { | 
 |     if (!layer) { | 
 |         return Error::BadParameter; | 
 |     } | 
 |     mLayers.erase(layer->getId()); | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::getActiveConfig( | 
 |         std::shared_ptr<const Display::Config>* outConfig) const | 
 | { | 
 |     ALOGV("[%" PRIu64 "] getActiveConfig", mId); | 
 |     hwc2_config_t configId = 0; | 
 |     auto intError = mComposer.getActiveConfig(mId, &configId); | 
 |     auto error = static_cast<Error>(intError); | 
 |  | 
 |     if (error != Error::None) { | 
 |         ALOGE("Unable to get active config for mId:[%" PRIu64 "]", mId); | 
 |         *outConfig = nullptr; | 
 |         return error; | 
 |     } | 
 |  | 
 |     if (mConfigs.count(configId) != 0) { | 
 |         *outConfig = mConfigs.at(configId); | 
 |     } else { | 
 |         ALOGE("[%" PRIu64 "] getActiveConfig returned unknown config %u", mId, | 
 |                 configId); | 
 |         // Return no error, but the caller needs to check for a null pointer to | 
 |         // detect this case | 
 |         *outConfig = nullptr; | 
 |     } | 
 |  | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::getActiveConfigIndex(int* outIndex) const { | 
 |     ALOGV("[%" PRIu64 "] getActiveConfigIndex", mId); | 
 |     hwc2_config_t configId = 0; | 
 |     auto intError = mComposer.getActiveConfig(mId, &configId); | 
 |     auto error = static_cast<Error>(intError); | 
 |  | 
 |     if (error != Error::None) { | 
 |         ALOGE("Unable to get active config for mId:[%" PRIu64 "]", mId); | 
 |         *outIndex = -1; | 
 |         return error; | 
 |     } | 
 |  | 
 |     auto pos = mConfigs.find(configId); | 
 |     if (pos != mConfigs.end()) { | 
 |         *outIndex = std::distance(mConfigs.begin(), pos); | 
 |     } else { | 
 |         ALOGE("[%" PRIu64 "] getActiveConfig returned unknown config %u", mId, configId); | 
 |         // Return no error, but the caller needs to check for a negative index | 
 |         // to detect this case | 
 |         *outIndex = -1; | 
 |     } | 
 |  | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::getChangedCompositionTypes(std::unordered_map<HWC2::Layer*, Composition>* outTypes) { | 
 |     std::vector<Hwc2::Layer> layerIds; | 
 |     std::vector<Hwc2::IComposerClient::Composition> types; | 
 |     auto intError = mComposer.getChangedCompositionTypes( | 
 |             mId, &layerIds, &types); | 
 |     uint32_t numElements = layerIds.size(); | 
 |     auto error = static_cast<Error>(intError); | 
 |     error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     outTypes->clear(); | 
 |     outTypes->reserve(numElements); | 
 |     for (uint32_t element = 0; element < numElements; ++element) { | 
 |         auto layer = getLayerById(layerIds[element]); | 
 |         if (layer) { | 
 |             auto type = static_cast<Composition>(types[element]); | 
 |             ALOGV("getChangedCompositionTypes: adding %" PRIu64 " %s", | 
 |                     layer->getId(), to_string(type).c_str()); | 
 |             outTypes->emplace(layer, type); | 
 |         } else { | 
 |             ALOGE("getChangedCompositionTypes: invalid layer %" PRIu64 " found" | 
 |                     " on display %" PRIu64, layerIds[element], mId); | 
 |         } | 
 |     } | 
 |  | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::getColorModes(std::vector<ColorMode>* outModes) const | 
 | { | 
 |     auto intError = mComposer.getColorModes(mId, outModes); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | int32_t Display::getSupportedPerFrameMetadata() const | 
 | { | 
 |     int32_t supportedPerFrameMetadata = 0; | 
 |  | 
 |     std::vector<Hwc2::PerFrameMetadataKey> tmpKeys = mComposer.getPerFrameMetadataKeys(mId); | 
 |     std::set<Hwc2::PerFrameMetadataKey> keys(tmpKeys.begin(), tmpKeys.end()); | 
 |  | 
 |     // Check whether a specific metadata type is supported. A metadata type is considered | 
 |     // supported if and only if all required fields are supported. | 
 |  | 
 |     // SMPTE2086 | 
 |     if (hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::DISPLAY_RED_PRIMARY_X) && | 
 |         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::DISPLAY_RED_PRIMARY_Y) && | 
 |         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::DISPLAY_GREEN_PRIMARY_X) && | 
 |         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::DISPLAY_GREEN_PRIMARY_Y) && | 
 |         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::DISPLAY_BLUE_PRIMARY_X) && | 
 |         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::DISPLAY_BLUE_PRIMARY_Y) && | 
 |         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::WHITE_POINT_X) && | 
 |         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::WHITE_POINT_Y) && | 
 |         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::MAX_LUMINANCE) && | 
 |         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::MIN_LUMINANCE)) { | 
 |         supportedPerFrameMetadata |= HdrMetadata::Type::SMPTE2086; | 
 |     } | 
 |     // CTA861_3 | 
 |     if (hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::MAX_CONTENT_LIGHT_LEVEL) && | 
 |         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::MAX_FRAME_AVERAGE_LIGHT_LEVEL)) { | 
 |         supportedPerFrameMetadata |= HdrMetadata::Type::CTA861_3; | 
 |     } | 
 |  | 
 |     // HDR10PLUS | 
 |     if (hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::HDR10_PLUS_SEI)) { | 
 |         supportedPerFrameMetadata |= HdrMetadata::Type::HDR10PLUS; | 
 |     } | 
 |  | 
 |     return supportedPerFrameMetadata; | 
 | } | 
 |  | 
 | Error Display::getRenderIntents(ColorMode colorMode, | 
 |         std::vector<RenderIntent>* outRenderIntents) const | 
 | { | 
 |     auto intError = mComposer.getRenderIntents(mId, colorMode, outRenderIntents); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::getDataspaceSaturationMatrix(Dataspace dataspace, android::mat4* outMatrix) | 
 | { | 
 |     auto intError = mComposer.getDataspaceSaturationMatrix(dataspace, outMatrix); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | std::vector<std::shared_ptr<const Display::Config>> Display::getConfigs() const | 
 | { | 
 |     std::vector<std::shared_ptr<const Config>> configs; | 
 |     for (const auto& element : mConfigs) { | 
 |         configs.emplace_back(element.second); | 
 |     } | 
 |     return configs; | 
 | } | 
 |  | 
 | Error Display::getName(std::string* outName) const | 
 | { | 
 |     auto intError = mComposer.getDisplayName(mId, outName); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::getRequests(HWC2::DisplayRequest* outDisplayRequests, | 
 |                            std::unordered_map<HWC2::Layer*, LayerRequest>* outLayerRequests) { | 
 |     uint32_t intDisplayRequests; | 
 |     std::vector<Hwc2::Layer> layerIds; | 
 |     std::vector<uint32_t> layerRequests; | 
 |     auto intError = mComposer.getDisplayRequests( | 
 |             mId, &intDisplayRequests, &layerIds, &layerRequests); | 
 |     uint32_t numElements = layerIds.size(); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     *outDisplayRequests = static_cast<DisplayRequest>(intDisplayRequests); | 
 |     outLayerRequests->clear(); | 
 |     outLayerRequests->reserve(numElements); | 
 |     for (uint32_t element = 0; element < numElements; ++element) { | 
 |         auto layer = getLayerById(layerIds[element]); | 
 |         if (layer) { | 
 |             auto layerRequest = | 
 |                     static_cast<LayerRequest>(layerRequests[element]); | 
 |             outLayerRequests->emplace(layer, layerRequest); | 
 |         } else { | 
 |             ALOGE("getRequests: invalid layer %" PRIu64 " found on display %" | 
 |                     PRIu64, layerIds[element], mId); | 
 |         } | 
 |     } | 
 |  | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::getType(DisplayType* outType) const | 
 | { | 
 |     *outType = mType; | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::supportsDoze(bool* outSupport) const { | 
 |     *outSupport = mDisplayCapabilities.count(DisplayCapability::Doze) > 0; | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::getHdrCapabilities(HdrCapabilities* outCapabilities) const | 
 | { | 
 |     float maxLuminance = -1.0f; | 
 |     float maxAverageLuminance = -1.0f; | 
 |     float minLuminance = -1.0f; | 
 |     std::vector<Hwc2::Hdr> types; | 
 |     auto intError = mComposer.getHdrCapabilities(mId, &types, | 
 |             &maxLuminance, &maxAverageLuminance, &minLuminance); | 
 |     auto error = static_cast<HWC2::Error>(intError); | 
 |  | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     *outCapabilities = HdrCapabilities(std::move(types), | 
 |             maxLuminance, maxAverageLuminance, minLuminance); | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::getDisplayedContentSamplingAttributes(PixelFormat* outFormat, | 
 |                                                      Dataspace* outDataspace, | 
 |                                                      uint8_t* outComponentMask) const { | 
 |     auto intError = mComposer.getDisplayedContentSamplingAttributes(mId, outFormat, outDataspace, | 
 |                                                                     outComponentMask); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::setDisplayContentSamplingEnabled(bool enabled, uint8_t componentMask, | 
 |                                                 uint64_t maxFrames) const { | 
 |     auto intError = | 
 |             mComposer.setDisplayContentSamplingEnabled(mId, enabled, componentMask, maxFrames); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::getDisplayedContentSample(uint64_t maxFrames, uint64_t timestamp, | 
 |                                          android::DisplayedFrameStats* outStats) const { | 
 |     auto intError = mComposer.getDisplayedContentSample(mId, maxFrames, timestamp, outStats); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::getReleaseFences(std::unordered_map<HWC2::Layer*, sp<Fence>>* outFences) const { | 
 |     std::vector<Hwc2::Layer> layerIds; | 
 |     std::vector<int> fenceFds; | 
 |     auto intError = mComposer.getReleaseFences(mId, &layerIds, &fenceFds); | 
 |     auto error = static_cast<Error>(intError); | 
 |     uint32_t numElements = layerIds.size(); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     std::unordered_map<HWC2::Layer*, sp<Fence>> releaseFences; | 
 |     releaseFences.reserve(numElements); | 
 |     for (uint32_t element = 0; element < numElements; ++element) { | 
 |         auto layer = getLayerById(layerIds[element]); | 
 |         if (layer) { | 
 |             sp<Fence> fence(new Fence(fenceFds[element])); | 
 |             releaseFences.emplace(layer, fence); | 
 |         } else { | 
 |             ALOGE("getReleaseFences: invalid layer %" PRIu64 | 
 |                     " found on display %" PRIu64, layerIds[element], mId); | 
 |             for (; element < numElements; ++element) { | 
 |                 close(fenceFds[element]); | 
 |             } | 
 |             return Error::BadLayer; | 
 |         } | 
 |     } | 
 |  | 
 |     *outFences = std::move(releaseFences); | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::present(sp<Fence>* outPresentFence) | 
 | { | 
 |     int32_t presentFenceFd = -1; | 
 |     auto intError = mComposer.presentDisplay(mId, &presentFenceFd); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     *outPresentFence = new Fence(presentFenceFd); | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::setActiveConfig(const std::shared_ptr<const Config>& config) | 
 | { | 
 |     if (config->getDisplayId() != mId) { | 
 |         ALOGE("setActiveConfig received config %u for the wrong display %" | 
 |                 PRIu64 " (expected %" PRIu64 ")", config->getId(), | 
 |                 config->getDisplayId(), mId); | 
 |         return Error::BadConfig; | 
 |     } | 
 |     auto intError = mComposer.setActiveConfig(mId, config->getId()); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::setClientTarget(uint32_t slot, const sp<GraphicBuffer>& target, | 
 |         const sp<Fence>& acquireFence, Dataspace dataspace) | 
 | { | 
 |     // TODO: Properly encode client target surface damage | 
 |     int32_t fenceFd = acquireFence->dup(); | 
 |     auto intError = mComposer.setClientTarget(mId, slot, target, | 
 |             fenceFd, dataspace, std::vector<Hwc2::IComposerClient::Rect>()); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::setColorMode(ColorMode mode, RenderIntent renderIntent) | 
 | { | 
 |     auto intError = mComposer.setColorMode(mId, mode, renderIntent); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::setColorTransform(const android::mat4& matrix, | 
 |         android_color_transform_t hint) | 
 | { | 
 |     auto intError = mComposer.setColorTransform(mId, | 
 |             matrix.asArray(), static_cast<Hwc2::ColorTransform>(hint)); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::setOutputBuffer(const sp<GraphicBuffer>& buffer, | 
 |         const sp<Fence>& releaseFence) | 
 | { | 
 |     int32_t fenceFd = releaseFence->dup(); | 
 |     auto handle = buffer->getNativeBuffer()->handle; | 
 |     auto intError = mComposer.setOutputBuffer(mId, handle, fenceFd); | 
 |     close(fenceFd); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::setPowerMode(PowerMode mode) | 
 | { | 
 |     auto intMode = static_cast<Hwc2::IComposerClient::PowerMode>(mode); | 
 |     auto intError = mComposer.setPowerMode(mId, intMode); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::setVsyncEnabled(Vsync enabled) | 
 | { | 
 |     auto intEnabled = static_cast<Hwc2::IComposerClient::Vsync>(enabled); | 
 |     auto intError = mComposer.setVsyncEnabled(mId, intEnabled); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::validate(uint32_t* outNumTypes, uint32_t* outNumRequests) | 
 | { | 
 |     uint32_t numTypes = 0; | 
 |     uint32_t numRequests = 0; | 
 |     auto intError = mComposer.validateDisplay(mId, &numTypes, &numRequests); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None && error != Error::HasChanges) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     *outNumTypes = numTypes; | 
 |     *outNumRequests = numRequests; | 
 |     return error; | 
 | } | 
 |  | 
 | Error Display::presentOrValidate(uint32_t* outNumTypes, uint32_t* outNumRequests, | 
 |                                  sp<android::Fence>* outPresentFence, uint32_t* state) { | 
 |  | 
 |     uint32_t numTypes = 0; | 
 |     uint32_t numRequests = 0; | 
 |     int32_t presentFenceFd = -1; | 
 |     auto intError = mComposer.presentOrValidateDisplay( | 
 |             mId, &numTypes, &numRequests, &presentFenceFd, state); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None && error != Error::HasChanges) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     if (*state == 1) { | 
 |         *outPresentFence = new Fence(presentFenceFd); | 
 |     } | 
 |  | 
 |     if (*state == 0) { | 
 |         *outNumTypes = numTypes; | 
 |         *outNumRequests = numRequests; | 
 |     } | 
 |     return error; | 
 | } | 
 |  | 
 | Error Display::setDisplayBrightness(float brightness) const { | 
 |     auto intError = mComposer.setDisplayBrightness(mId, brightness); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | // For use by Device | 
 |  | 
 | void Display::setConnected(bool connected) { | 
 |     if (!mIsConnected && connected) { | 
 |         mComposer.setClientTargetSlotCount(mId); | 
 |         if (mType == DisplayType::Physical) { | 
 |             loadConfigs(); | 
 |         } | 
 |     } | 
 |     mIsConnected = connected; | 
 | } | 
 |  | 
 | int32_t Display::getAttribute(hwc2_config_t configId, Attribute attribute) | 
 | { | 
 |     int32_t value = 0; | 
 |     auto intError = mComposer.getDisplayAttribute(mId, configId, | 
 |             static_cast<Hwc2::IComposerClient::Attribute>(attribute), | 
 |             &value); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         ALOGE("getDisplayAttribute(%" PRIu64 ", %u, %s) failed: %s (%d)", mId, | 
 |                 configId, to_string(attribute).c_str(), | 
 |                 to_string(error).c_str(), intError); | 
 |         return -1; | 
 |     } | 
 |     return value; | 
 | } | 
 |  | 
 | void Display::loadConfig(hwc2_config_t configId) | 
 | { | 
 |     ALOGV("[%" PRIu64 "] loadConfig(%u)", mId, configId); | 
 |  | 
 |     auto config = Config::Builder(*this, configId) | 
 |             .setWidth(getAttribute(configId, Attribute::Width)) | 
 |             .setHeight(getAttribute(configId, Attribute::Height)) | 
 |             .setVsyncPeriod(getAttribute(configId, Attribute::VsyncPeriod)) | 
 |             .setDpiX(getAttribute(configId, Attribute::DpiX)) | 
 |             .setDpiY(getAttribute(configId, Attribute::DpiY)) | 
 |             .build(); | 
 |     mConfigs.emplace(configId, std::move(config)); | 
 | } | 
 |  | 
 | void Display::loadConfigs() | 
 | { | 
 |     ALOGV("[%" PRIu64 "] loadConfigs", mId); | 
 |  | 
 |     std::vector<Hwc2::Config> configIds; | 
 |     auto intError = mComposer.getDisplayConfigs(mId, &configIds); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         ALOGE("[%" PRIu64 "] getDisplayConfigs [2] failed: %s (%d)", mId, | 
 |                 to_string(error).c_str(), intError); | 
 |         return; | 
 |     } | 
 |  | 
 |     for (auto configId : configIds) { | 
 |         loadConfig(configId); | 
 |     } | 
 | } | 
 |  | 
 | // Other Display methods | 
 |  | 
 | HWC2::Layer* Display::getLayerById(hwc2_layer_t id) const { | 
 |     if (mLayers.count(id) == 0) { | 
 |         return nullptr; | 
 |     } | 
 |  | 
 |     return mLayers.at(id).get(); | 
 | } | 
 | } // namespace impl | 
 |  | 
 | // Layer methods | 
 |  | 
 | Layer::~Layer() = default; | 
 |  | 
 | namespace impl { | 
 |  | 
 | Layer::Layer(android::Hwc2::Composer& composer, const std::unordered_set<Capability>& capabilities, | 
 |              hwc2_display_t displayId, hwc2_layer_t layerId) | 
 |   : mComposer(composer), | 
 |     mCapabilities(capabilities), | 
 |     mDisplayId(displayId), | 
 |     mId(layerId), | 
 |     mColorMatrix(android::mat4()) | 
 | { | 
 |     ALOGV("Created layer %" PRIu64 " on display %" PRIu64, layerId, displayId); | 
 | } | 
 |  | 
 | Layer::~Layer() | 
 | { | 
 |     auto intError = mComposer.destroyLayer(mDisplayId, mId); | 
 |     auto error = static_cast<Error>(intError); | 
 |     ALOGE_IF(error != Error::None, "destroyLayer(%" PRIu64 ", %" PRIu64 ")" | 
 |             " failed: %s (%d)", mDisplayId, mId, to_string(error).c_str(), | 
 |             intError); | 
 | } | 
 |  | 
 | Error Layer::setCursorPosition(int32_t x, int32_t y) | 
 | { | 
 |     auto intError = mComposer.setCursorPosition(mDisplayId, mId, x, y); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setBuffer(uint32_t slot, const sp<GraphicBuffer>& buffer, | 
 |         const sp<Fence>& acquireFence) | 
 | { | 
 |     int32_t fenceFd = acquireFence->dup(); | 
 |     auto intError = mComposer.setLayerBuffer(mDisplayId, mId, slot, buffer, | 
 |                                              fenceFd); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setSurfaceDamage(const Region& damage) | 
 | { | 
 |     // We encode default full-screen damage as INVALID_RECT upstream, but as 0 | 
 |     // rects for HWC | 
 |     Hwc2::Error intError = Hwc2::Error::NONE; | 
 |     if (damage.isRect() && damage.getBounds() == Rect::INVALID_RECT) { | 
 |         intError = mComposer.setLayerSurfaceDamage(mDisplayId, | 
 |                 mId, std::vector<Hwc2::IComposerClient::Rect>()); | 
 |     } else { | 
 |         size_t rectCount = 0; | 
 |         auto rectArray = damage.getArray(&rectCount); | 
 |  | 
 |         std::vector<Hwc2::IComposerClient::Rect> hwcRects; | 
 |         for (size_t rect = 0; rect < rectCount; ++rect) { | 
 |             hwcRects.push_back({rectArray[rect].left, rectArray[rect].top, | 
 |                     rectArray[rect].right, rectArray[rect].bottom}); | 
 |         } | 
 |  | 
 |         intError = mComposer.setLayerSurfaceDamage(mDisplayId, mId, hwcRects); | 
 |     } | 
 |  | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setBlendMode(BlendMode mode) | 
 | { | 
 |     auto intMode = static_cast<Hwc2::IComposerClient::BlendMode>(mode); | 
 |     auto intError = mComposer.setLayerBlendMode(mDisplayId, mId, intMode); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setColor(hwc_color_t color) | 
 | { | 
 |     Hwc2::IComposerClient::Color hwcColor{color.r, color.g, color.b, color.a}; | 
 |     auto intError = mComposer.setLayerColor(mDisplayId, mId, hwcColor); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setCompositionType(Composition type) | 
 | { | 
 |     auto intType = static_cast<Hwc2::IComposerClient::Composition>(type); | 
 |     auto intError = mComposer.setLayerCompositionType( | 
 |             mDisplayId, mId, intType); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setDataspace(Dataspace dataspace) | 
 | { | 
 |     if (dataspace == mDataSpace) { | 
 |         return Error::None; | 
 |     } | 
 |     mDataSpace = dataspace; | 
 |     auto intError = mComposer.setLayerDataspace(mDisplayId, mId, mDataSpace); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setPerFrameMetadata(const int32_t supportedPerFrameMetadata, | 
 |         const android::HdrMetadata& metadata) | 
 | { | 
 |     if (metadata == mHdrMetadata) { | 
 |         return Error::None; | 
 |     } | 
 |  | 
 |     mHdrMetadata = metadata; | 
 |     int validTypes = mHdrMetadata.validTypes & supportedPerFrameMetadata; | 
 |     std::vector<Hwc2::PerFrameMetadata> perFrameMetadatas; | 
 |     if (validTypes & HdrMetadata::SMPTE2086) { | 
 |         perFrameMetadatas.insert(perFrameMetadatas.end(), | 
 |                                  {{Hwc2::PerFrameMetadataKey::DISPLAY_RED_PRIMARY_X, | 
 |                                    mHdrMetadata.smpte2086.displayPrimaryRed.x}, | 
 |                                   {Hwc2::PerFrameMetadataKey::DISPLAY_RED_PRIMARY_Y, | 
 |                                    mHdrMetadata.smpte2086.displayPrimaryRed.y}, | 
 |                                   {Hwc2::PerFrameMetadataKey::DISPLAY_GREEN_PRIMARY_X, | 
 |                                    mHdrMetadata.smpte2086.displayPrimaryGreen.x}, | 
 |                                   {Hwc2::PerFrameMetadataKey::DISPLAY_GREEN_PRIMARY_Y, | 
 |                                    mHdrMetadata.smpte2086.displayPrimaryGreen.y}, | 
 |                                   {Hwc2::PerFrameMetadataKey::DISPLAY_BLUE_PRIMARY_X, | 
 |                                    mHdrMetadata.smpte2086.displayPrimaryBlue.x}, | 
 |                                   {Hwc2::PerFrameMetadataKey::DISPLAY_BLUE_PRIMARY_Y, | 
 |                                    mHdrMetadata.smpte2086.displayPrimaryBlue.y}, | 
 |                                   {Hwc2::PerFrameMetadataKey::WHITE_POINT_X, | 
 |                                    mHdrMetadata.smpte2086.whitePoint.x}, | 
 |                                   {Hwc2::PerFrameMetadataKey::WHITE_POINT_Y, | 
 |                                    mHdrMetadata.smpte2086.whitePoint.y}, | 
 |                                   {Hwc2::PerFrameMetadataKey::MAX_LUMINANCE, | 
 |                                    mHdrMetadata.smpte2086.maxLuminance}, | 
 |                                   {Hwc2::PerFrameMetadataKey::MIN_LUMINANCE, | 
 |                                    mHdrMetadata.smpte2086.minLuminance}}); | 
 |     } | 
 |  | 
 |     if (validTypes & HdrMetadata::CTA861_3) { | 
 |         perFrameMetadatas.insert(perFrameMetadatas.end(), | 
 |                                  {{Hwc2::PerFrameMetadataKey::MAX_CONTENT_LIGHT_LEVEL, | 
 |                                    mHdrMetadata.cta8613.maxContentLightLevel}, | 
 |                                   {Hwc2::PerFrameMetadataKey::MAX_FRAME_AVERAGE_LIGHT_LEVEL, | 
 |                                    mHdrMetadata.cta8613.maxFrameAverageLightLevel}}); | 
 |     } | 
 |  | 
 |     Error error = static_cast<Error>( | 
 |             mComposer.setLayerPerFrameMetadata(mDisplayId, mId, perFrameMetadatas)); | 
 |  | 
 |     if (validTypes & HdrMetadata::HDR10PLUS) { | 
 |         std::vector<Hwc2::PerFrameMetadataBlob> perFrameMetadataBlobs; | 
 |         perFrameMetadataBlobs.push_back( | 
 |                 {Hwc2::PerFrameMetadataKey::HDR10_PLUS_SEI, mHdrMetadata.hdr10plus}); | 
 |         Error setMetadataBlobsError = static_cast<Error>( | 
 |                 mComposer.setLayerPerFrameMetadataBlobs(mDisplayId, mId, perFrameMetadataBlobs)); | 
 |         if (error == Error::None) { | 
 |             return setMetadataBlobsError; | 
 |         } | 
 |     } | 
 |     return error; | 
 | } | 
 |  | 
 | Error Layer::setDisplayFrame(const Rect& frame) | 
 | { | 
 |     Hwc2::IComposerClient::Rect hwcRect{frame.left, frame.top, | 
 |         frame.right, frame.bottom}; | 
 |     auto intError = mComposer.setLayerDisplayFrame(mDisplayId, mId, hwcRect); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setPlaneAlpha(float alpha) | 
 | { | 
 |     auto intError = mComposer.setLayerPlaneAlpha(mDisplayId, mId, alpha); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setSidebandStream(const native_handle_t* stream) | 
 | { | 
 |     if (mCapabilities.count(Capability::SidebandStream) == 0) { | 
 |         ALOGE("Attempted to call setSidebandStream without checking that the " | 
 |                 "device supports sideband streams"); | 
 |         return Error::Unsupported; | 
 |     } | 
 |     auto intError = mComposer.setLayerSidebandStream(mDisplayId, mId, stream); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setSourceCrop(const FloatRect& crop) | 
 | { | 
 |     Hwc2::IComposerClient::FRect hwcRect{ | 
 |         crop.left, crop.top, crop.right, crop.bottom}; | 
 |     auto intError = mComposer.setLayerSourceCrop(mDisplayId, mId, hwcRect); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setTransform(Transform transform) | 
 | { | 
 |     auto intTransform = static_cast<Hwc2::Transform>(transform); | 
 |     auto intError = mComposer.setLayerTransform(mDisplayId, mId, intTransform); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setVisibleRegion(const Region& region) | 
 | { | 
 |     size_t rectCount = 0; | 
 |     auto rectArray = region.getArray(&rectCount); | 
 |  | 
 |     std::vector<Hwc2::IComposerClient::Rect> hwcRects; | 
 |     for (size_t rect = 0; rect < rectCount; ++rect) { | 
 |         hwcRects.push_back({rectArray[rect].left, rectArray[rect].top, | 
 |                 rectArray[rect].right, rectArray[rect].bottom}); | 
 |     } | 
 |  | 
 |     auto intError = mComposer.setLayerVisibleRegion(mDisplayId, mId, hwcRects); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setZOrder(uint32_t z) | 
 | { | 
 |     auto intError = mComposer.setLayerZOrder(mDisplayId, mId, z); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setInfo(uint32_t type, uint32_t appId) | 
 | { | 
 |   auto intError = mComposer.setLayerInfo(mDisplayId, mId, type, appId); | 
 |   return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | // Composer HAL 2.3 | 
 | Error Layer::setColorTransform(const android::mat4& matrix) { | 
 |     if (matrix == mColorMatrix) { | 
 |         return Error::None; | 
 |     } | 
 |     mColorMatrix = matrix; | 
 |     auto intError = mComposer.setLayerColorTransform(mDisplayId, mId, matrix.asArray()); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | } // namespace impl | 
 | } // namespace HWC2 |