|  | /* | 
|  | * 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 | 
|  |  | 
|  | Device::Device(bool useVrComposer) | 
|  | : mComposer(std::make_unique<Hwc2::Composer>(useVrComposer)), | 
|  | mCapabilities(), | 
|  | mDisplays(), | 
|  | mHotplug(), | 
|  | mPendingHotplugs(), | 
|  | mRefresh(), | 
|  | mPendingRefreshes(), | 
|  | mVsync(), | 
|  | mPendingVsyncs() | 
|  | { | 
|  | loadCapabilities(); | 
|  | registerCallbacks(); | 
|  | } | 
|  |  | 
|  | Device::~Device() | 
|  | { | 
|  | 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)); | 
|  | } | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | // Required by HWC2 device | 
|  |  | 
|  | std::string Device::dump() const | 
|  | { | 
|  | return mComposer->dumpDebugInfo(); | 
|  | } | 
|  |  | 
|  | uint32_t Device::getMaxVirtualDisplayCount() const | 
|  | { | 
|  | return mComposer->getMaxVirtualDisplayCount(); | 
|  | } | 
|  |  | 
|  | 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; | 
|  | auto intFormat = static_cast<Hwc2::PixelFormat>(*format); | 
|  | auto intError = mComposer->createVirtualDisplay(width, height, | 
|  | &intFormat, &displayId); | 
|  | 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)->setConnected(true); | 
|  | 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()) { | 
|  | mComposer->setClientTargetSlotCount(display->getId()); | 
|  | 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"); | 
|  | auto capabilities = mComposer->getCapabilities(); | 
|  | for (auto capability : capabilities) { | 
|  | mCapabilities.emplace(static_cast<Capability>(capability)); | 
|  | } | 
|  | } | 
|  |  | 
|  | bool Device::hasCapability(HWC2::Capability capability) const | 
|  | { | 
|  | return std::find(mCapabilities.cbegin(), mCapabilities.cend(), | 
|  | capability) != mCapabilities.cend(); | 
|  | } | 
|  |  | 
|  | 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() | 
|  | { | 
|  | sp<ComposerCallback> callback = new ComposerCallback(this); | 
|  | mComposer->registerCallback(callback); | 
|  | } | 
|  |  | 
|  |  | 
|  | // For use by Display | 
|  |  | 
|  | void Device::destroyVirtualDisplay(hwc2_display_t display) | 
|  | { | 
|  | ALOGI("Destroying virtual display"); | 
|  | auto intError = mComposer->destroyVirtualDisplay(display); | 
|  | 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), | 
|  | mType(DisplayType::Invalid) | 
|  | { | 
|  | ALOGV("Created display %" PRIu64, id); | 
|  |  | 
|  | auto intError = mDevice.mComposer->getDisplayType(mId, | 
|  | reinterpret_cast<Hwc2::IComposerClient::DisplayType *>(&mType)); | 
|  | auto error = static_cast<Error>(intError); | 
|  | if (error != Error::None) { | 
|  | ALOGE("getDisplayType(%" PRIu64 ") failed: %s (%d)", | 
|  | id, to_string(error).c_str(), intError); | 
|  | } | 
|  | } | 
|  |  | 
|  | Display::~Display() | 
|  | { | 
|  | ALOGV("Destroyed display %" PRIu64, mId); | 
|  | if (mType == DisplayType::Virtual) { | 
|  | 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() | 
|  | { | 
|  | auto intError = mDevice.mComposer->acceptDisplayChanges(mId); | 
|  | return static_cast<Error>(intError); | 
|  | } | 
|  |  | 
|  | Error Display::createLayer(std::shared_ptr<Layer>* outLayer) | 
|  | { | 
|  | hwc2_layer_t layerId = 0; | 
|  | auto intError = mDevice.mComposer->createLayer(mId, &layerId); | 
|  | 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; | 
|  | auto intError = mDevice.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::getChangedCompositionTypes( | 
|  | std::unordered_map<std::shared_ptr<Layer>, Composition>* outTypes) | 
|  | { | 
|  | 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); | 
|  | 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 | 
|  | { | 
|  | std::vector<Hwc2::ColorMode> modes; | 
|  | auto intError = mDevice.mComposer->getColorModes(mId, &modes); | 
|  | uint32_t numModes = modes.size(); | 
|  | auto error = static_cast<Error>(intError); | 
|  | 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 | 
|  | { | 
|  | auto intError = mDevice.mComposer->getDisplayName(mId, outName); | 
|  | return static_cast<Error>(intError); | 
|  | } | 
|  |  | 
|  | Error Display::getRequests(HWC2::DisplayRequest* outDisplayRequests, | 
|  | std::unordered_map<std::shared_ptr<Layer>, LayerRequest>* | 
|  | outLayerRequests) | 
|  | { | 
|  | 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); | 
|  | 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 | 
|  | { | 
|  | bool intSupport = false; | 
|  | auto intError = mDevice.mComposer->getDozeSupport(mId, &intSupport); | 
|  | 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; | 
|  | 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(); | 
|  | 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 | 
|  | { | 
|  | 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(); | 
|  | 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); | 
|  | 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 = mDevice.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 = mDevice.mComposer->setActiveConfig(mId, config->getId()); | 
|  | return static_cast<Error>(intError); | 
|  | } | 
|  |  | 
|  | Error Display::setClientTarget(uint32_t slot, const sp<GraphicBuffer>& target, | 
|  | const sp<Fence>& acquireFence, android_dataspace_t dataspace) | 
|  | { | 
|  | // TODO: Properly encode client target surface damage | 
|  | int32_t fenceFd = acquireFence->dup(); | 
|  | auto intError = mDevice.mComposer->setClientTarget(mId, slot, target, | 
|  | fenceFd, static_cast<Hwc2::Dataspace>(dataspace), | 
|  | std::vector<Hwc2::IComposerClient::Rect>()); | 
|  | return static_cast<Error>(intError); | 
|  | } | 
|  |  | 
|  | Error Display::setColorMode(android_color_mode_t mode) | 
|  | { | 
|  | auto intError = mDevice.mComposer->setColorMode(mId, | 
|  | static_cast<Hwc2::ColorMode>(mode)); | 
|  | return static_cast<Error>(intError); | 
|  | } | 
|  |  | 
|  | Error Display::setColorTransform(const android::mat4& matrix, | 
|  | android_color_transform_t hint) | 
|  | { | 
|  | auto intError = mDevice.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 = mDevice.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 = mDevice.mComposer->setPowerMode(mId, intMode); | 
|  | return static_cast<Error>(intError); | 
|  | } | 
|  |  | 
|  | Error Display::setVsyncEnabled(Vsync enabled) | 
|  | { | 
|  | auto intEnabled = static_cast<Hwc2::IComposerClient::Vsync>(enabled); | 
|  | auto intError = mDevice.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 = mDevice.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 = mDevice.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; | 
|  | } | 
|  |  | 
|  | void Display::discardCommands() | 
|  | { | 
|  | mDevice.mComposer->resetCommands(); | 
|  | } | 
|  |  | 
|  | // For use by Device | 
|  |  | 
|  | int32_t Display::getAttribute(hwc2_config_t configId, Attribute attribute) | 
|  | { | 
|  | int32_t value = 0; | 
|  | auto intError = mDevice.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 = mDevice.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); | 
|  | } | 
|  | } | 
|  |  | 
|  | // For use by Layer | 
|  |  | 
|  | void Display::destroyLayer(hwc2_layer_t layerId) | 
|  | { | 
|  | auto intError =mDevice.mComposer->destroyLayer(mId, layerId); | 
|  | 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) | 
|  | { | 
|  | auto intError = mDevice.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 = mDevice.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 = mDevice.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 = mDevice.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 = mDevice.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 = mDevice.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 = mDevice.mComposer->setLayerCompositionType(mDisplayId, | 
|  | mId, intType); | 
|  | return static_cast<Error>(intError); | 
|  | } | 
|  |  | 
|  | Error Layer::setDataspace(android_dataspace_t dataspace) | 
|  | { | 
|  | if (dataspace == mDataSpace) { | 
|  | return Error::None; | 
|  | } | 
|  | mDataSpace = dataspace; | 
|  | auto intDataspace = static_cast<Hwc2::Dataspace>(dataspace); | 
|  | auto intError = mDevice.mComposer->setLayerDataspace(mDisplayId, | 
|  | mId, intDataspace); | 
|  | return static_cast<Error>(intError); | 
|  | } | 
|  |  | 
|  | Error Layer::setDisplayFrame(const Rect& frame) | 
|  | { | 
|  | Hwc2::IComposerClient::Rect hwcRect{frame.left, frame.top, | 
|  | frame.right, frame.bottom}; | 
|  | auto intError = mDevice.mComposer->setLayerDisplayFrame(mDisplayId, | 
|  | mId, hwcRect); | 
|  | return static_cast<Error>(intError); | 
|  | } | 
|  |  | 
|  | Error Layer::setPlaneAlpha(float alpha) | 
|  | { | 
|  | auto intError = mDevice.mComposer->setLayerPlaneAlpha(mDisplayId, | 
|  | mId, alpha); | 
|  | 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; | 
|  | } | 
|  | auto intError = mDevice.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 = mDevice.mComposer->setLayerSourceCrop(mDisplayId, | 
|  | mId, hwcRect); | 
|  | return static_cast<Error>(intError); | 
|  | } | 
|  |  | 
|  | Error Layer::setTransform(Transform transform) | 
|  | { | 
|  | auto intTransform = static_cast<Hwc2::Transform>(transform); | 
|  | auto intError = mDevice.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 = mDevice.mComposer->setLayerVisibleRegion(mDisplayId, | 
|  | mId, hwcRects); | 
|  | return static_cast<Error>(intError); | 
|  | } | 
|  |  | 
|  | Error Layer::setZOrder(uint32_t z) | 
|  | { | 
|  | auto intError = mDevice.mComposer->setLayerZOrder(mDisplayId, mId, z); | 
|  | return static_cast<Error>(intError); | 
|  | } | 
|  |  | 
|  | Error Layer::setInfo(uint32_t type, uint32_t appId) | 
|  | { | 
|  | auto intError = mDevice.mComposer->setLayerInfo(mDisplayId, mId, type, appId); | 
|  | return static_cast<Error>(intError); | 
|  | } | 
|  |  | 
|  | } // namespace HWC2 |