| /* | 
 |  * 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 <algorithm> | 
 | #include <inttypes.h> | 
 |  | 
 | extern "C" { | 
 |     static void hotplug_hook(hwc2_callback_data_t callbackData, | 
 |             hwc2_display_t displayId, int32_t intConnected) { | 
 |         auto device = static_cast<HWC2::Device*>(callbackData); | 
 |         auto display = device->getDisplayById(displayId); | 
 |         if (display) { | 
 |             auto connected = static_cast<HWC2::Connection>(intConnected); | 
 |             device->callHotplug(std::move(display), connected); | 
 |         } else { | 
 |             ALOGE("Hotplug callback called with unknown display %" PRIu64, | 
 |                     displayId); | 
 |         } | 
 |     } | 
 |  | 
 |     static void refresh_hook(hwc2_callback_data_t callbackData, | 
 |             hwc2_display_t displayId) { | 
 |         auto device = static_cast<HWC2::Device*>(callbackData); | 
 |         auto display = device->getDisplayById(displayId); | 
 |         if (display) { | 
 |             device->callRefresh(std::move(display)); | 
 |         } else { | 
 |             ALOGE("Refresh callback called with unknown display %" PRIu64, | 
 |                     displayId); | 
 |         } | 
 |     } | 
 |  | 
 |     static void vsync_hook(hwc2_callback_data_t callbackData, | 
 |             hwc2_display_t displayId, int64_t timestamp) { | 
 |         auto device = static_cast<HWC2::Device*>(callbackData); | 
 |         auto display = device->getDisplayById(displayId); | 
 |         if (display) { | 
 |             device->callVsync(std::move(display), timestamp); | 
 |         } else { | 
 |             ALOGE("Vsync callback called with unknown display %" PRIu64, | 
 |                     displayId); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | using android::Fence; | 
 | using android::FloatRect; | 
 | using android::GraphicBuffer; | 
 | using android::HdrCapabilities; | 
 | using android::Rect; | 
 | using android::Region; | 
 | using android::sp; | 
 | using android::hardware::Return; | 
 | using android::hardware::Void; | 
 |  | 
 | namespace HWC2 { | 
 |  | 
 | namespace Hwc2 = android::Hwc2; | 
 |  | 
 | // Device methods | 
 |  | 
 | #ifdef BYPASS_IHWC | 
 | Device::Device(hwc2_device_t* device) | 
 |   : mHwcDevice(device), | 
 |     mCreateVirtualDisplay(nullptr), | 
 |     mDestroyVirtualDisplay(nullptr), | 
 |     mDump(nullptr), | 
 |     mGetMaxVirtualDisplayCount(nullptr), | 
 |     mRegisterCallback(nullptr), | 
 |     mAcceptDisplayChanges(nullptr), | 
 |     mCreateLayer(nullptr), | 
 |     mDestroyLayer(nullptr), | 
 |     mGetActiveConfig(nullptr), | 
 |     mGetChangedCompositionTypes(nullptr), | 
 |     mGetColorModes(nullptr), | 
 |     mGetDisplayAttribute(nullptr), | 
 |     mGetDisplayConfigs(nullptr), | 
 |     mGetDisplayName(nullptr), | 
 |     mGetDisplayRequests(nullptr), | 
 |     mGetDisplayType(nullptr), | 
 |     mGetDozeSupport(nullptr), | 
 |     mGetHdrCapabilities(nullptr), | 
 |     mGetReleaseFences(nullptr), | 
 |     mPresentDisplay(nullptr), | 
 |     mSetActiveConfig(nullptr), | 
 |     mSetClientTarget(nullptr), | 
 |     mSetColorMode(nullptr), | 
 |     mSetColorTransform(nullptr), | 
 |     mSetOutputBuffer(nullptr), | 
 |     mSetPowerMode(nullptr), | 
 |     mSetVsyncEnabled(nullptr), | 
 |     mValidateDisplay(nullptr), | 
 |     mSetCursorPosition(nullptr), | 
 |     mSetLayerBuffer(nullptr), | 
 |     mSetLayerSurfaceDamage(nullptr), | 
 |     mSetLayerBlendMode(nullptr), | 
 |     mSetLayerColor(nullptr), | 
 |     mSetLayerCompositionType(nullptr), | 
 |     mSetLayerDataspace(nullptr), | 
 |     mSetLayerDisplayFrame(nullptr), | 
 |     mSetLayerPlaneAlpha(nullptr), | 
 |     mSetLayerSidebandStream(nullptr), | 
 |     mSetLayerSourceCrop(nullptr), | 
 |     mSetLayerTransform(nullptr), | 
 |     mSetLayerVisibleRegion(nullptr), | 
 |     mSetLayerZOrder(nullptr), | 
 | #else | 
 | Device::Device(bool useVrComposer) | 
 |   : mComposer(std::make_unique<Hwc2::Composer>(useVrComposer)), | 
 | #endif // BYPASS_IHWC | 
 |     mCapabilities(), | 
 |     mDisplays(), | 
 |     mHotplug(), | 
 |     mPendingHotplugs(), | 
 |     mRefresh(), | 
 |     mPendingRefreshes(), | 
 |     mVsync(), | 
 |     mPendingVsyncs() | 
 | { | 
 |     loadCapabilities(); | 
 |     loadFunctionPointers(); | 
 |     registerCallbacks(); | 
 | } | 
 |  | 
 | Device::~Device() | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     if (mHwcDevice == nullptr) { | 
 |         return; | 
 |     } | 
 | #endif | 
 |  | 
 |     for (auto element : mDisplays) { | 
 |         auto display = element.second.lock(); | 
 |         if (!display) { | 
 |             ALOGE("~Device: Found a display (%" PRId64 " that has already been" | 
 |                     " destroyed", element.first); | 
 |             continue; | 
 |         } | 
 |  | 
 |         DisplayType displayType = HWC2::DisplayType::Invalid; | 
 |         auto error = display->getType(&displayType); | 
 |         if (error != Error::None) { | 
 |             ALOGE("~Device: Failed to determine type of display %" PRIu64 | 
 |                     ": %s (%d)", display->getId(), to_string(error).c_str(), | 
 |                     static_cast<int32_t>(error)); | 
 |             continue; | 
 |         } | 
 |  | 
 |         if (displayType == HWC2::DisplayType::Physical) { | 
 |             error = display->setVsyncEnabled(HWC2::Vsync::Disable); | 
 |             if (error != Error::None) { | 
 |                 ALOGE("~Device: Failed to disable vsync for display %" PRIu64 | 
 |                         ": %s (%d)", display->getId(), to_string(error).c_str(), | 
 |                         static_cast<int32_t>(error)); | 
 |             } | 
 |         } | 
 |     } | 
 |  | 
 | #ifdef BYPASS_IHWC | 
 |     hwc2_close(mHwcDevice); | 
 | #endif | 
 | } | 
 |  | 
 | // Required by HWC2 device | 
 |  | 
 | std::string Device::dump() const | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     uint32_t numBytes = 0; | 
 |     mDump(mHwcDevice, &numBytes, nullptr); | 
 |  | 
 |     std::vector<char> buffer(numBytes); | 
 |     mDump(mHwcDevice, &numBytes, buffer.data()); | 
 |  | 
 |     return std::string(buffer.data(), buffer.size()); | 
 | #else | 
 |     return mComposer->dumpDebugInfo(); | 
 | #endif | 
 | } | 
 |  | 
 | uint32_t Device::getMaxVirtualDisplayCount() const | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     return mGetMaxVirtualDisplayCount(mHwcDevice); | 
 | #else | 
 |     return mComposer->getMaxVirtualDisplayCount(); | 
 | #endif | 
 | } | 
 |  | 
 | Error Device::createVirtualDisplay(uint32_t width, uint32_t height, | 
 |         android_pixel_format_t* format, std::shared_ptr<Display>* outDisplay) | 
 | { | 
 |     ALOGI("Creating virtual display"); | 
 |  | 
 |     hwc2_display_t displayId = 0; | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intFormat = static_cast<int32_t>(*format); | 
 |     int32_t intError = mCreateVirtualDisplay(mHwcDevice, width, height, | 
 |             &intFormat, &displayId); | 
 | #else | 
 |     auto intFormat = static_cast<Hwc2::PixelFormat>(*format); | 
 |     auto intError = mComposer->createVirtualDisplay(width, height, | 
 |             &intFormat, &displayId); | 
 | #endif | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     ALOGI("Created virtual display"); | 
 |     *format = static_cast<android_pixel_format_t>(intFormat); | 
 |     *outDisplay = getDisplayById(displayId); | 
 |     if (!*outDisplay) { | 
 |         ALOGE("Failed to get display by id"); | 
 |         return Error::BadDisplay; | 
 |     } | 
 |     (*outDisplay)->setVirtual(); | 
 |     return Error::None; | 
 | } | 
 |  | 
 | void Device::registerHotplugCallback(HotplugCallback hotplug) | 
 | { | 
 |     ALOGV("registerHotplugCallback"); | 
 |     mHotplug = hotplug; | 
 |     for (auto& pending : mPendingHotplugs) { | 
 |         auto& display = pending.first; | 
 |         auto connected = pending.second; | 
 |         ALOGV("Sending pending hotplug(%" PRIu64 ", %s)", display->getId(), | 
 |                 to_string(connected).c_str()); | 
 |         mHotplug(std::move(display), connected); | 
 |     } | 
 | } | 
 |  | 
 | void Device::registerRefreshCallback(RefreshCallback refresh) | 
 | { | 
 |     mRefresh = refresh; | 
 |     for (auto& pending : mPendingRefreshes) { | 
 |         mRefresh(std::move(pending)); | 
 |     } | 
 | } | 
 |  | 
 | void Device::registerVsyncCallback(VsyncCallback vsync) | 
 | { | 
 |     mVsync = vsync; | 
 |     for (auto& pending : mPendingVsyncs) { | 
 |         auto& display = pending.first; | 
 |         auto timestamp = pending.second; | 
 |         mVsync(std::move(display), timestamp); | 
 |     } | 
 | } | 
 |  | 
 | // For use by Device callbacks | 
 |  | 
 | void Device::callHotplug(std::shared_ptr<Display> display, Connection connected) | 
 | { | 
 |     if (connected == Connection::Connected) { | 
 |         if (!display->isConnected()) { | 
 | #ifndef BYPASS_IHWC | 
 |             mComposer->setClientTargetSlotCount(display->getId()); | 
 | #endif | 
 |             display->loadConfigs(); | 
 |             display->setConnected(true); | 
 |         } | 
 |     } else { | 
 |         display->setConnected(false); | 
 |         mDisplays.erase(display->getId()); | 
 |     } | 
 |  | 
 |     if (mHotplug) { | 
 |         mHotplug(std::move(display), connected); | 
 |     } else { | 
 |         ALOGV("callHotplug called, but no valid callback registered, storing"); | 
 |         mPendingHotplugs.emplace_back(std::move(display), connected); | 
 |     } | 
 | } | 
 |  | 
 | void Device::callRefresh(std::shared_ptr<Display> display) | 
 | { | 
 |     if (mRefresh) { | 
 |         mRefresh(std::move(display)); | 
 |     } else { | 
 |         ALOGV("callRefresh called, but no valid callback registered, storing"); | 
 |         mPendingRefreshes.emplace_back(std::move(display)); | 
 |     } | 
 | } | 
 |  | 
 | void Device::callVsync(std::shared_ptr<Display> display, nsecs_t timestamp) | 
 | { | 
 |     if (mVsync) { | 
 |         mVsync(std::move(display), timestamp); | 
 |     } else { | 
 |         ALOGV("callVsync called, but no valid callback registered, storing"); | 
 |         mPendingVsyncs.emplace_back(std::move(display), timestamp); | 
 |     } | 
 | } | 
 |  | 
 | // Other Device methods | 
 |  | 
 | std::shared_ptr<Display> Device::getDisplayById(hwc2_display_t id) { | 
 |     if (mDisplays.count(id) != 0) { | 
 |         auto strongDisplay = mDisplays[id].lock(); | 
 |         ALOGE_IF(!strongDisplay, "Display %" PRId64 " is in mDisplays but is no" | 
 |                 " longer alive", id); | 
 |         return strongDisplay; | 
 |     } | 
 |  | 
 |     auto display = std::make_shared<Display>(*this, id); | 
 |     mDisplays.emplace(id, display); | 
 |     return display; | 
 | } | 
 |  | 
 | // Device initialization methods | 
 |  | 
 | void Device::loadCapabilities() | 
 | { | 
 |     static_assert(sizeof(Capability) == sizeof(int32_t), | 
 |             "Capability size has changed"); | 
 | #ifdef BYPASS_IHWC | 
 |     uint32_t numCapabilities = 0; | 
 |     mHwcDevice->getCapabilities(mHwcDevice, &numCapabilities, nullptr); | 
 |     std::vector<Capability> capabilities(numCapabilities); | 
 |     auto asInt = reinterpret_cast<int32_t*>(capabilities.data()); | 
 |     mHwcDevice->getCapabilities(mHwcDevice, &numCapabilities, asInt); | 
 |     for (auto capability : capabilities) { | 
 |         mCapabilities.emplace(capability); | 
 |     } | 
 | #else | 
 |     auto capabilities = mComposer->getCapabilities(); | 
 |     for (auto capability : capabilities) { | 
 |         mCapabilities.emplace(static_cast<Capability>(capability)); | 
 |     } | 
 | #endif | 
 | } | 
 |  | 
 | bool Device::hasCapability(HWC2::Capability capability) const | 
 | { | 
 |     return std::find(mCapabilities.cbegin(), mCapabilities.cend(), | 
 |             capability) != mCapabilities.cend(); | 
 | } | 
 |  | 
 | void Device::loadFunctionPointers() | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     // For all of these early returns, we log an error message inside | 
 |     // loadFunctionPointer specifying which function failed to load | 
 |  | 
 |     // Display function pointers | 
 |     if (!loadFunctionPointer(FunctionDescriptor::CreateVirtualDisplay, | 
 |             mCreateVirtualDisplay)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::DestroyVirtualDisplay, | 
 |             mDestroyVirtualDisplay)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::Dump, mDump)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::GetMaxVirtualDisplayCount, | 
 |             mGetMaxVirtualDisplayCount)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::RegisterCallback, | 
 |             mRegisterCallback)) return; | 
 |  | 
 |     // Device function pointers | 
 |     if (!loadFunctionPointer(FunctionDescriptor::AcceptDisplayChanges, | 
 |             mAcceptDisplayChanges)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::CreateLayer, | 
 |             mCreateLayer)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::DestroyLayer, | 
 |             mDestroyLayer)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::GetActiveConfig, | 
 |             mGetActiveConfig)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::GetChangedCompositionTypes, | 
 |             mGetChangedCompositionTypes)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::GetColorModes, | 
 |             mGetColorModes)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::GetDisplayAttribute, | 
 |             mGetDisplayAttribute)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::GetDisplayConfigs, | 
 |             mGetDisplayConfigs)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::GetDisplayName, | 
 |             mGetDisplayName)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::GetDisplayRequests, | 
 |             mGetDisplayRequests)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::GetDisplayType, | 
 |             mGetDisplayType)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::GetDozeSupport, | 
 |             mGetDozeSupport)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::GetHdrCapabilities, | 
 |             mGetHdrCapabilities)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::GetReleaseFences, | 
 |             mGetReleaseFences)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::PresentDisplay, | 
 |             mPresentDisplay)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetActiveConfig, | 
 |             mSetActiveConfig)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetClientTarget, | 
 |             mSetClientTarget)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetColorMode, | 
 |             mSetColorMode)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetColorTransform, | 
 |             mSetColorTransform)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetOutputBuffer, | 
 |             mSetOutputBuffer)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetPowerMode, | 
 |             mSetPowerMode)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetVsyncEnabled, | 
 |             mSetVsyncEnabled)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::ValidateDisplay, | 
 |             mValidateDisplay)) return; | 
 |  | 
 |     // Layer function pointers | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetCursorPosition, | 
 |             mSetCursorPosition)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetLayerBuffer, | 
 |             mSetLayerBuffer)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetLayerSurfaceDamage, | 
 |             mSetLayerSurfaceDamage)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetLayerBlendMode, | 
 |             mSetLayerBlendMode)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetLayerColor, | 
 |             mSetLayerColor)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetLayerCompositionType, | 
 |             mSetLayerCompositionType)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetLayerDataspace, | 
 |             mSetLayerDataspace)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetLayerDisplayFrame, | 
 |             mSetLayerDisplayFrame)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetLayerPlaneAlpha, | 
 |             mSetLayerPlaneAlpha)) return; | 
 |     if (hasCapability(Capability::SidebandStream)) { | 
 |         if (!loadFunctionPointer(FunctionDescriptor::SetLayerSidebandStream, | 
 |                 mSetLayerSidebandStream)) return; | 
 |     } | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetLayerSourceCrop, | 
 |             mSetLayerSourceCrop)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetLayerTransform, | 
 |             mSetLayerTransform)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetLayerVisibleRegion, | 
 |             mSetLayerVisibleRegion)) return; | 
 |     if (!loadFunctionPointer(FunctionDescriptor::SetLayerZOrder, | 
 |             mSetLayerZOrder)) return; | 
 | #endif // BYPASS_IHWC | 
 | } | 
 |  | 
 | namespace { | 
 | class ComposerCallback : public Hwc2::IComposerCallback { | 
 | public: | 
 |     ComposerCallback(Device* device) : mDevice(device) {} | 
 |  | 
 |     Return<void> onHotplug(Hwc2::Display display, | 
 |             Connection connected) override | 
 |     { | 
 |         hotplug_hook(mDevice, display, static_cast<int32_t>(connected)); | 
 |         return Void(); | 
 |     } | 
 |  | 
 |     Return<void> onRefresh(Hwc2::Display display) override | 
 |     { | 
 |         refresh_hook(mDevice, display); | 
 |         return Void(); | 
 |     } | 
 |  | 
 |     Return<void> onVsync(Hwc2::Display display, int64_t timestamp) override | 
 |     { | 
 |         vsync_hook(mDevice, display, timestamp); | 
 |         return Void(); | 
 |     } | 
 |  | 
 | private: | 
 |     Device* mDevice; | 
 | }; | 
 | } // namespace anonymous | 
 |  | 
 | void Device::registerCallbacks() | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     registerCallback<HWC2_PFN_HOTPLUG>(Callback::Hotplug, hotplug_hook); | 
 |     registerCallback<HWC2_PFN_REFRESH>(Callback::Refresh, refresh_hook); | 
 |     registerCallback<HWC2_PFN_VSYNC>(Callback::Vsync, vsync_hook); | 
 | #else | 
 |     sp<ComposerCallback> callback = new ComposerCallback(this); | 
 |     mComposer->registerCallback(callback); | 
 | #endif | 
 | } | 
 |  | 
 |  | 
 | // For use by Display | 
 |  | 
 | void Device::destroyVirtualDisplay(hwc2_display_t display) | 
 | { | 
 |     ALOGI("Destroying virtual display"); | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDestroyVirtualDisplay(mHwcDevice, display); | 
 | #else | 
 |     auto intError = mComposer->destroyVirtualDisplay(display); | 
 | #endif | 
 |     auto error = static_cast<Error>(intError); | 
 |     ALOGE_IF(error != Error::None, "destroyVirtualDisplay(%" PRIu64 ") failed:" | 
 |             " %s (%d)", display, to_string(error).c_str(), intError); | 
 |     mDisplays.erase(display); | 
 | } | 
 |  | 
 | // Display methods | 
 |  | 
 | Display::Display(Device& device, hwc2_display_t id) | 
 |   : mDevice(device), | 
 |     mId(id), | 
 |     mIsConnected(false), | 
 |     mIsVirtual(false) | 
 | { | 
 |     ALOGV("Created display %" PRIu64, id); | 
 | } | 
 |  | 
 | Display::~Display() | 
 | { | 
 |     ALOGV("Destroyed display %" PRIu64, mId); | 
 |     if (mIsVirtual) { | 
 |         mDevice.destroyVirtualDisplay(mId); | 
 |     } | 
 | } | 
 |  | 
 | 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; | 
 |     } | 
 | } | 
 |  | 
 | // Required by HWC2 display | 
 |  | 
 | Error Display::acceptChanges() | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mAcceptDisplayChanges(mDevice.mHwcDevice, mId); | 
 | #else | 
 |     auto intError = mDevice.mComposer->acceptDisplayChanges(mId); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::createLayer(std::shared_ptr<Layer>* outLayer) | 
 | { | 
 |     hwc2_layer_t layerId = 0; | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mCreateLayer(mDevice.mHwcDevice, mId, &layerId); | 
 | #else | 
 |     auto intError = mDevice.mComposer->createLayer(mId, &layerId); | 
 | #endif | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     auto layer = std::make_shared<Layer>(shared_from_this(), layerId); | 
 |     mLayers.emplace(layerId, layer); | 
 |     *outLayer = std::move(layer); | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::getActiveConfig( | 
 |         std::shared_ptr<const Display::Config>* outConfig) const | 
 | { | 
 |     ALOGV("[%" PRIu64 "] getActiveConfig", mId); | 
 |     hwc2_config_t configId = 0; | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mGetActiveConfig(mDevice.mHwcDevice, mId, | 
 |             &configId); | 
 | #else | 
 |     auto intError = mDevice.mComposer->getActiveConfig(mId, &configId); | 
 | #endif | 
 |     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::getChangedCompositionTypes( | 
 |         std::unordered_map<std::shared_ptr<Layer>, Composition>* outTypes) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     uint32_t numElements = 0; | 
 |     int32_t intError = mDevice.mGetChangedCompositionTypes(mDevice.mHwcDevice, | 
 |             mId, &numElements, nullptr, nullptr); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     std::vector<hwc2_layer_t> layerIds(numElements); | 
 |     std::vector<int32_t> types(numElements); | 
 |     intError = mDevice.mGetChangedCompositionTypes(mDevice.mHwcDevice, mId, | 
 |             &numElements, layerIds.data(), types.data()); | 
 | #else | 
 |     std::vector<Hwc2::Layer> layerIds; | 
 |     std::vector<Hwc2::IComposerClient::Composition> types; | 
 |     auto intError = mDevice.mComposer->getChangedCompositionTypes(mId, | 
 |             &layerIds, &types); | 
 |     uint32_t numElements = layerIds.size(); | 
 |     auto error = static_cast<Error>(intError); | 
 | #endif | 
 |     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<android_color_mode_t>* outModes) const | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     uint32_t numModes = 0; | 
 |     int32_t intError = mDevice.mGetColorModes(mDevice.mHwcDevice, mId, | 
 |             &numModes, nullptr); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None)  { | 
 |         return error; | 
 |     } | 
 |  | 
 |     std::vector<int32_t> modes(numModes); | 
 |     intError = mDevice.mGetColorModes(mDevice.mHwcDevice, mId, &numModes, | 
 |             modes.data()); | 
 |     error = static_cast<Error>(intError); | 
 | #else | 
 |     std::vector<Hwc2::ColorMode> modes; | 
 |     auto intError = mDevice.mComposer->getColorModes(mId, &modes); | 
 |     uint32_t numModes = modes.size(); | 
 |     auto error = static_cast<Error>(intError); | 
 | #endif | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     outModes->resize(numModes); | 
 |     for (size_t i = 0; i < numModes; i++) { | 
 |         (*outModes)[i] = static_cast<android_color_mode_t>(modes[i]); | 
 |     } | 
 |     return Error::None; | 
 | } | 
 |  | 
 | 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 | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     uint32_t size; | 
 |     int32_t intError = mDevice.mGetDisplayName(mDevice.mHwcDevice, mId, &size, | 
 |             nullptr); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     std::vector<char> rawName(size); | 
 |     intError = mDevice.mGetDisplayName(mDevice.mHwcDevice, mId, &size, | 
 |             rawName.data()); | 
 |     error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     *outName = std::string(rawName.cbegin(), rawName.cend()); | 
 |     return Error::None; | 
 | #else | 
 |     auto intError = mDevice.mComposer->getDisplayName(mId, outName); | 
 |     return static_cast<Error>(intError); | 
 | #endif | 
 | } | 
 |  | 
 | Error Display::getRequests(HWC2::DisplayRequest* outDisplayRequests, | 
 |         std::unordered_map<std::shared_ptr<Layer>, LayerRequest>* | 
 |                 outLayerRequests) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intDisplayRequests = 0; | 
 |     uint32_t numElements = 0; | 
 |     int32_t intError = mDevice.mGetDisplayRequests(mDevice.mHwcDevice, mId, | 
 |             &intDisplayRequests, &numElements, nullptr, nullptr); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     std::vector<hwc2_layer_t> layerIds(numElements); | 
 |     std::vector<int32_t> layerRequests(numElements); | 
 |     intError = mDevice.mGetDisplayRequests(mDevice.mHwcDevice, mId, | 
 |             &intDisplayRequests, &numElements, layerIds.data(), | 
 |             layerRequests.data()); | 
 |     error = static_cast<Error>(intError); | 
 | #else | 
 |     uint32_t intDisplayRequests; | 
 |     std::vector<Hwc2::Layer> layerIds; | 
 |     std::vector<uint32_t> layerRequests; | 
 |     auto intError = mDevice.mComposer->getDisplayRequests(mId, | 
 |             &intDisplayRequests, &layerIds, &layerRequests); | 
 |     uint32_t numElements = layerIds.size(); | 
 |     auto error = static_cast<Error>(intError); | 
 | #endif | 
 |     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 | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intType = 0; | 
 |     int32_t intError = mDevice.mGetDisplayType(mDevice.mHwcDevice, mId, | 
 |             &intType); | 
 | #else | 
 |     Hwc2::IComposerClient::DisplayType intType = | 
 |         Hwc2::IComposerClient::DisplayType::INVALID; | 
 |     auto intError = mDevice.mComposer->getDisplayType(mId, &intType); | 
 | #endif | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     *outType = static_cast<DisplayType>(intType); | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::supportsDoze(bool* outSupport) const | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intSupport = 0; | 
 |     int32_t intError = mDevice.mGetDozeSupport(mDevice.mHwcDevice, mId, | 
 |             &intSupport); | 
 | #else | 
 |     bool intSupport = false; | 
 |     auto intError = mDevice.mComposer->getDozeSupport(mId, &intSupport); | 
 | #endif | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |     *outSupport = static_cast<bool>(intSupport); | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::getHdrCapabilities( | 
 |         std::unique_ptr<HdrCapabilities>* outCapabilities) const | 
 | { | 
 |     uint32_t numTypes = 0; | 
 |     float maxLuminance = -1.0f; | 
 |     float maxAverageLuminance = -1.0f; | 
 |     float minLuminance = -1.0f; | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mGetHdrCapabilities(mDevice.mHwcDevice, mId, | 
 |             &numTypes, nullptr, &maxLuminance, &maxAverageLuminance, | 
 |             &minLuminance); | 
 |     auto error = static_cast<HWC2::Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     std::vector<int32_t> types(numTypes); | 
 |     intError = mDevice.mGetHdrCapabilities(mDevice.mHwcDevice, mId, &numTypes, | 
 |             types.data(), &maxLuminance, &maxAverageLuminance, &minLuminance); | 
 |     error = static_cast<HWC2::Error>(intError); | 
 | #else | 
 |     std::vector<Hwc2::Hdr> intTypes; | 
 |     auto intError = mDevice.mComposer->getHdrCapabilities(mId, &intTypes, | 
 |             &maxLuminance, &maxAverageLuminance, &minLuminance); | 
 |     auto error = static_cast<HWC2::Error>(intError); | 
 |  | 
 |     std::vector<int32_t> types; | 
 |     for (auto type : intTypes) { | 
 |         types.push_back(static_cast<int32_t>(type)); | 
 |     } | 
 |     numTypes = types.size(); | 
 | #endif | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     *outCapabilities = std::make_unique<HdrCapabilities>(std::move(types), | 
 |             maxLuminance, maxAverageLuminance, minLuminance); | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::getReleaseFences( | 
 |         std::unordered_map<std::shared_ptr<Layer>, sp<Fence>>* outFences) const | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     uint32_t numElements = 0; | 
 |     int32_t intError = mDevice.mGetReleaseFences(mDevice.mHwcDevice, mId, | 
 |             &numElements, nullptr, nullptr); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     std::vector<hwc2_layer_t> layerIds(numElements); | 
 |     std::vector<int32_t> fenceFds(numElements); | 
 |     intError = mDevice.mGetReleaseFences(mDevice.mHwcDevice, mId, &numElements, | 
 |             layerIds.data(), fenceFds.data()); | 
 |     error = static_cast<Error>(intError); | 
 | #else | 
 |     std::vector<Hwc2::Layer> layerIds; | 
 |     std::vector<int> fenceFds; | 
 |     auto intError = mDevice.mComposer->getReleaseFences(mId, | 
 |             &layerIds, &fenceFds); | 
 |     auto error = static_cast<Error>(intError); | 
 |     uint32_t numElements = layerIds.size(); | 
 | #endif | 
 |     if (error != Error::None) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     std::unordered_map<std::shared_ptr<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(std::move(layer), fence); | 
 |         } else { | 
 |             ALOGE("getReleaseFences: invalid layer %" PRIu64 | 
 |                     " found on display %" PRIu64, layerIds[element], mId); | 
 |             return Error::BadLayer; | 
 |         } | 
 |     } | 
 |  | 
 |     *outFences = std::move(releaseFences); | 
 |     return Error::None; | 
 | } | 
 |  | 
 | Error Display::present(sp<Fence>* outPresentFence) | 
 | { | 
 |     int32_t presentFenceFd = -1; | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mPresentDisplay(mDevice.mHwcDevice, mId, | 
 |             &presentFenceFd); | 
 | #else | 
 |     auto intError = mDevice.mComposer->presentDisplay(mId, &presentFenceFd); | 
 | #endif | 
 |     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; | 
 |     } | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mSetActiveConfig(mDevice.mHwcDevice, mId, | 
 |             config->getId()); | 
 | #else | 
 |     auto intError = mDevice.mComposer->setActiveConfig(mId, config->getId()); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::setClientTarget(uint32_t slot, buffer_handle_t target, | 
 |         const sp<Fence>& acquireFence, android_dataspace_t dataspace) | 
 | { | 
 |     // TODO: Properly encode client target surface damage | 
 |     int32_t fenceFd = acquireFence->dup(); | 
 | #ifdef BYPASS_IHWC | 
 |     (void) slot; | 
 |     int32_t intError = mDevice.mSetClientTarget(mDevice.mHwcDevice, mId, target, | 
 |             fenceFd, static_cast<int32_t>(dataspace), {0, nullptr}); | 
 | #else | 
 |     auto intError = mDevice.mComposer->setClientTarget(mId, slot, target, | 
 |             fenceFd, static_cast<Hwc2::Dataspace>(dataspace), | 
 |             std::vector<Hwc2::IComposerClient::Rect>()); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::setColorMode(android_color_mode_t mode) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mSetColorMode(mDevice.mHwcDevice, mId, mode); | 
 | #else | 
 |     auto intError = mDevice.mComposer->setColorMode(mId, | 
 |             static_cast<Hwc2::ColorMode>(mode)); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::setColorTransform(const android::mat4& matrix, | 
 |         android_color_transform_t hint) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mSetColorTransform(mDevice.mHwcDevice, mId, | 
 |             matrix.asArray(), static_cast<int32_t>(hint)); | 
 | #else | 
 |     auto intError = mDevice.mComposer->setColorTransform(mId, | 
 |             matrix.asArray(), static_cast<Hwc2::ColorTransform>(hint)); | 
 | #endif | 
 |     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; | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mSetOutputBuffer(mDevice.mHwcDevice, mId, handle, | 
 |             fenceFd); | 
 | #else | 
 |     auto intError = mDevice.mComposer->setOutputBuffer(mId, handle, fenceFd); | 
 | #endif | 
 |     close(fenceFd); | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::setPowerMode(PowerMode mode) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     auto intMode = static_cast<int32_t>(mode); | 
 |     int32_t intError = mDevice.mSetPowerMode(mDevice.mHwcDevice, mId, intMode); | 
 | #else | 
 |     auto intMode = static_cast<Hwc2::IComposerClient::PowerMode>(mode); | 
 |     auto intError = mDevice.mComposer->setPowerMode(mId, intMode); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::setVsyncEnabled(Vsync enabled) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     auto intEnabled = static_cast<int32_t>(enabled); | 
 |     int32_t intError = mDevice.mSetVsyncEnabled(mDevice.mHwcDevice, mId, | 
 |             intEnabled); | 
 | #else | 
 |     auto intEnabled = static_cast<Hwc2::IComposerClient::Vsync>(enabled); | 
 |     auto intError = mDevice.mComposer->setVsyncEnabled(mId, intEnabled); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Display::validate(uint32_t* outNumTypes, uint32_t* outNumRequests) | 
 | { | 
 |     uint32_t numTypes = 0; | 
 |     uint32_t numRequests = 0; | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mValidateDisplay(mDevice.mHwcDevice, mId, | 
 |             &numTypes, &numRequests); | 
 | #else | 
 |     auto intError = mDevice.mComposer->validateDisplay(mId, | 
 |             &numTypes, &numRequests); | 
 | #endif | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None && error != Error::HasChanges) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     *outNumTypes = numTypes; | 
 |     *outNumRequests = numRequests; | 
 |     return error; | 
 | } | 
 |  | 
 | // For use by Device | 
 |  | 
 | int32_t Display::getAttribute(hwc2_config_t configId, Attribute attribute) | 
 | { | 
 |     int32_t value = 0; | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mGetDisplayAttribute(mDevice.mHwcDevice, mId, | 
 |             configId, static_cast<int32_t>(attribute), &value); | 
 | #else | 
 |     auto intError = mDevice.mComposer->getDisplayAttribute(mId, configId, | 
 |             static_cast<Hwc2::IComposerClient::Attribute>(attribute), | 
 |             &value); | 
 | #endif | 
 |     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); | 
 |  | 
 | #ifdef BYPASS_IHWC | 
 |     uint32_t numConfigs = 0; | 
 |     int32_t intError = mDevice.mGetDisplayConfigs(mDevice.mHwcDevice, mId, | 
 |             &numConfigs, nullptr); | 
 |     auto error = static_cast<Error>(intError); | 
 |     if (error != Error::None) { | 
 |         ALOGE("[%" PRIu64 "] getDisplayConfigs [1] failed: %s (%d)", mId, | 
 |                 to_string(error).c_str(), intError); | 
 |         return; | 
 |     } | 
 |  | 
 |     std::vector<hwc2_config_t> configIds(numConfigs); | 
 |     intError = mDevice.mGetDisplayConfigs(mDevice.mHwcDevice, mId, &numConfigs, | 
 |             configIds.data()); | 
 |     error = static_cast<Error>(intError); | 
 | #else | 
 |     std::vector<Hwc2::Config> configIds; | 
 |     auto intError = mDevice.mComposer->getDisplayConfigs(mId, &configIds); | 
 |     auto error = static_cast<Error>(intError); | 
 | #endif | 
 |     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); | 
 |     } | 
 | } | 
 |  | 
 | // For use by Layer | 
 |  | 
 | void Display::destroyLayer(hwc2_layer_t layerId) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mDestroyLayer(mDevice.mHwcDevice, mId, layerId); | 
 | #else | 
 |     auto intError =mDevice.mComposer->destroyLayer(mId, layerId); | 
 | #endif | 
 |     auto error = static_cast<Error>(intError); | 
 |     ALOGE_IF(error != Error::None, "destroyLayer(%" PRIu64 ", %" PRIu64 ")" | 
 |             " failed: %s (%d)", mId, layerId, to_string(error).c_str(), | 
 |             intError); | 
 |     mLayers.erase(layerId); | 
 | } | 
 |  | 
 | // Other Display methods | 
 |  | 
 | std::shared_ptr<Layer> Display::getLayerById(hwc2_layer_t id) const | 
 | { | 
 |     if (mLayers.count(id) == 0) { | 
 |         return nullptr; | 
 |     } | 
 |  | 
 |     auto layer = mLayers.at(id).lock(); | 
 |     return layer; | 
 | } | 
 |  | 
 | // Layer methods | 
 |  | 
 | Layer::Layer(const std::shared_ptr<Display>& display, hwc2_layer_t id) | 
 |   : mDisplay(display), | 
 |     mDisplayId(display->getId()), | 
 |     mDevice(display->getDevice()), | 
 |     mId(id) | 
 | { | 
 |     ALOGV("Created layer %" PRIu64 " on display %" PRIu64, id, | 
 |             display->getId()); | 
 | } | 
 |  | 
 | Layer::~Layer() | 
 | { | 
 |     auto display = mDisplay.lock(); | 
 |     if (display) { | 
 |         display->destroyLayer(mId); | 
 |     } | 
 | } | 
 |  | 
 | Error Layer::setCursorPosition(int32_t x, int32_t y) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mSetCursorPosition(mDevice.mHwcDevice, | 
 |             mDisplayId, mId, x, y); | 
 | #else | 
 |     auto intError = mDevice.mComposer->setCursorPosition(mDisplayId, | 
 |             mId, x, y); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setBuffer(uint32_t slot, buffer_handle_t buffer, | 
 |         const sp<Fence>& acquireFence) | 
 | { | 
 |     int32_t fenceFd = acquireFence->dup(); | 
 | #ifdef BYPASS_IHWC | 
 |     (void) slot; | 
 |     int32_t intError = mDevice.mSetLayerBuffer(mDevice.mHwcDevice, mDisplayId, | 
 |             mId, buffer, fenceFd); | 
 | #else | 
 |     auto intError = mDevice.mComposer->setLayerBuffer(mDisplayId, | 
 |             mId, slot, buffer, fenceFd); | 
 | #endif | 
 |     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 | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = 0; | 
 | #else | 
 |     Hwc2::Error intError = Hwc2::Error::NONE; | 
 | #endif | 
 |     if (damage.isRect() && damage.getBounds() == Rect::INVALID_RECT) { | 
 | #ifdef BYPASS_IHWC | 
 |         intError = mDevice.mSetLayerSurfaceDamage(mDevice.mHwcDevice, | 
 |                 mDisplayId, mId, {0, nullptr}); | 
 | #else | 
 |         intError = mDevice.mComposer->setLayerSurfaceDamage(mDisplayId, | 
 |                 mId, std::vector<Hwc2::IComposerClient::Rect>()); | 
 | #endif | 
 |     } else { | 
 |         size_t rectCount = 0; | 
 |         auto rectArray = damage.getArray(&rectCount); | 
 |  | 
 | #ifdef BYPASS_IHWC | 
 |         std::vector<hwc_rect_t> hwcRects; | 
 | #else | 
 |         std::vector<Hwc2::IComposerClient::Rect> hwcRects; | 
 | #endif | 
 |         for (size_t rect = 0; rect < rectCount; ++rect) { | 
 |             hwcRects.push_back({rectArray[rect].left, rectArray[rect].top, | 
 |                     rectArray[rect].right, rectArray[rect].bottom}); | 
 |         } | 
 |  | 
 | #ifdef BYPASS_IHWC | 
 |         hwc_region_t hwcRegion = {}; | 
 |         hwcRegion.numRects = rectCount; | 
 |         hwcRegion.rects = hwcRects.data(); | 
 |  | 
 |         intError = mDevice.mSetLayerSurfaceDamage(mDevice.mHwcDevice, | 
 |                 mDisplayId, mId, hwcRegion); | 
 | #else | 
 |         intError = mDevice.mComposer->setLayerSurfaceDamage(mDisplayId, | 
 |                 mId, hwcRects); | 
 | #endif | 
 |     } | 
 |  | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setBlendMode(BlendMode mode) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     auto intMode = static_cast<int32_t>(mode); | 
 |     int32_t intError = mDevice.mSetLayerBlendMode(mDevice.mHwcDevice, | 
 |             mDisplayId, mId, intMode); | 
 | #else | 
 |     auto intMode = static_cast<Hwc2::IComposerClient::BlendMode>(mode); | 
 |     auto intError = mDevice.mComposer->setLayerBlendMode(mDisplayId, | 
 |             mId, intMode); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setColor(hwc_color_t color) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mSetLayerColor(mDevice.mHwcDevice, mDisplayId, | 
 |             mId, color); | 
 | #else | 
 |     Hwc2::IComposerClient::Color hwcColor{color.r, color.g, color.b, color.a}; | 
 |     auto intError = mDevice.mComposer->setLayerColor(mDisplayId, | 
 |             mId, hwcColor); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setCompositionType(Composition type) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     auto intType = static_cast<int32_t>(type); | 
 |     int32_t intError = mDevice.mSetLayerCompositionType(mDevice.mHwcDevice, | 
 |             mDisplayId, mId, intType); | 
 | #else | 
 |     auto intType = static_cast<Hwc2::IComposerClient::Composition>(type); | 
 |     auto intError = mDevice.mComposer->setLayerCompositionType(mDisplayId, | 
 |             mId, intType); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setDataspace(android_dataspace_t dataspace) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     auto intDataspace = static_cast<int32_t>(dataspace); | 
 |     int32_t intError = mDevice.mSetLayerDataspace(mDevice.mHwcDevice, | 
 |             mDisplayId, mId, intDataspace); | 
 | #else | 
 |     auto intDataspace = static_cast<Hwc2::Dataspace>(dataspace); | 
 |     auto intError = mDevice.mComposer->setLayerDataspace(mDisplayId, | 
 |             mId, intDataspace); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setDisplayFrame(const Rect& frame) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     hwc_rect_t hwcRect{frame.left, frame.top, frame.right, frame.bottom}; | 
 |     int32_t intError = mDevice.mSetLayerDisplayFrame(mDevice.mHwcDevice, | 
 |             mDisplayId, mId, hwcRect); | 
 | #else | 
 |     Hwc2::IComposerClient::Rect hwcRect{frame.left, frame.top, | 
 |         frame.right, frame.bottom}; | 
 |     auto intError = mDevice.mComposer->setLayerDisplayFrame(mDisplayId, | 
 |             mId, hwcRect); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setPlaneAlpha(float alpha) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mSetLayerPlaneAlpha(mDevice.mHwcDevice, | 
 |             mDisplayId, mId, alpha); | 
 | #else | 
 |     auto intError = mDevice.mComposer->setLayerPlaneAlpha(mDisplayId, | 
 |             mId, alpha); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setSidebandStream(const native_handle_t* stream) | 
 | { | 
 |     if (!mDevice.hasCapability(Capability::SidebandStream)) { | 
 |         ALOGE("Attempted to call setSidebandStream without checking that the " | 
 |                 "device supports sideband streams"); | 
 |         return Error::Unsupported; | 
 |     } | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mSetLayerSidebandStream(mDevice.mHwcDevice, | 
 |             mDisplayId, mId, stream); | 
 | #else | 
 |     auto intError = mDevice.mComposer->setLayerSidebandStream(mDisplayId, | 
 |             mId, stream); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setSourceCrop(const FloatRect& crop) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     hwc_frect_t hwcRect{crop.left, crop.top, crop.right, crop.bottom}; | 
 |     int32_t intError = mDevice.mSetLayerSourceCrop(mDevice.mHwcDevice, | 
 |             mDisplayId, mId, hwcRect); | 
 | #else | 
 |     Hwc2::IComposerClient::FRect hwcRect{ | 
 |         crop.left, crop.top, crop.right, crop.bottom}; | 
 |     auto intError = mDevice.mComposer->setLayerSourceCrop(mDisplayId, | 
 |             mId, hwcRect); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setTransform(Transform transform) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     auto intTransform = static_cast<int32_t>(transform); | 
 |     int32_t intError = mDevice.mSetLayerTransform(mDevice.mHwcDevice, | 
 |             mDisplayId, mId, intTransform); | 
 | #else | 
 |     auto intTransform = static_cast<Hwc2::Transform>(transform); | 
 |     auto intError = mDevice.mComposer->setLayerTransform(mDisplayId, | 
 |             mId, intTransform); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setVisibleRegion(const Region& region) | 
 | { | 
 |     size_t rectCount = 0; | 
 |     auto rectArray = region.getArray(&rectCount); | 
 |  | 
 | #ifdef BYPASS_IHWC | 
 |     std::vector<hwc_rect_t> hwcRects; | 
 | #else | 
 |     std::vector<Hwc2::IComposerClient::Rect> hwcRects; | 
 | #endif | 
 |     for (size_t rect = 0; rect < rectCount; ++rect) { | 
 |         hwcRects.push_back({rectArray[rect].left, rectArray[rect].top, | 
 |                 rectArray[rect].right, rectArray[rect].bottom}); | 
 |     } | 
 |  | 
 | #ifdef BYPASS_IHWC | 
 |     hwc_region_t hwcRegion = {}; | 
 |     hwcRegion.numRects = rectCount; | 
 |     hwcRegion.rects = hwcRects.data(); | 
 |  | 
 |     int32_t intError = mDevice.mSetLayerVisibleRegion(mDevice.mHwcDevice, | 
 |             mDisplayId, mId, hwcRegion); | 
 | #else | 
 |     auto intError = mDevice.mComposer->setLayerVisibleRegion(mDisplayId, | 
 |             mId, hwcRects); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setZOrder(uint32_t z) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |     int32_t intError = mDevice.mSetLayerZOrder(mDevice.mHwcDevice, mDisplayId, | 
 |             mId, z); | 
 | #else | 
 |     auto intError = mDevice.mComposer->setLayerZOrder(mDisplayId, mId, z); | 
 | #endif | 
 |     return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | Error Layer::setInfo(uint32_t type, uint32_t appId) | 
 | { | 
 | #ifdef BYPASS_IHWC | 
 |   (void)type; | 
 |   (void)appId; | 
 |   int32_t intError = 0; | 
 | #else | 
 |   auto intError = mDevice.mComposer->setLayerInfo(mDisplayId, mId, type, appId); | 
 | #endif | 
 |   return static_cast<Error>(intError); | 
 | } | 
 |  | 
 | } // namespace HWC2 |