| /* | 
 |  * Copyright 2016 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. | 
 |  */ | 
 |  | 
 | // TODO(b/129481165): remove the #pragma below and fix conversion issues | 
 | #pragma clang diagnostic push | 
 | #pragma clang diagnostic ignored "-Wconversion" | 
 |  | 
 | #undef LOG_TAG | 
 | #define LOG_TAG "HwcComposer" | 
 | #define ATRACE_TAG ATRACE_TAG_GRAPHICS | 
 |  | 
 | #include "HidlComposerHal.h" | 
 |  | 
 | #include <android/binder_manager.h> | 
 | #include <composer-command-buffer/2.2/ComposerCommandBuffer.h> | 
 | #include <hidl/HidlTransportSupport.h> | 
 | #include <hidl/HidlTransportUtils.h> | 
 | #include <log/log.h> | 
 | #include <utils/Trace.h> | 
 | #include "HWC2.h" | 
 | #include "Hal.h" | 
 |  | 
 | #include <algorithm> | 
 | #include <cinttypes> | 
 |  | 
 | using aidl::android::hardware::graphics::composer3::Capability; | 
 | using aidl::android::hardware::graphics::composer3::ClientTargetPropertyWithBrightness; | 
 | using aidl::android::hardware::graphics::composer3::DimmingStage; | 
 | using aidl::android::hardware::graphics::composer3::DisplayCapability; | 
 | using aidl::android::hardware::graphics::composer3::OverlayProperties; | 
 |  | 
 | namespace android { | 
 |  | 
 | using hardware::hidl_handle; | 
 | using hardware::hidl_vec; | 
 | using hardware::Return; | 
 |  | 
 | namespace Hwc2 { | 
 | namespace { | 
 |  | 
 | using android::hardware::Return; | 
 | using android::hardware::Void; | 
 | using android::HWC2::ComposerCallback; | 
 |  | 
 | class ComposerCallbackBridge : public IComposerCallback { | 
 | public: | 
 |     ComposerCallbackBridge(ComposerCallback& callback, bool vsyncSwitchingSupported) | 
 |           : mCallback(callback), mVsyncSwitchingSupported(vsyncSwitchingSupported) {} | 
 |  | 
 |     Return<void> onHotplug(Display display, Connection connection) override { | 
 |         mCallback.onComposerHalHotplug(display, connection); | 
 |         return Void(); | 
 |     } | 
 |  | 
 |     Return<void> onRefresh(Display display) override { | 
 |         mCallback.onComposerHalRefresh(display); | 
 |         return Void(); | 
 |     } | 
 |  | 
 |     Return<void> onVsync(Display display, int64_t timestamp) override { | 
 |         if (!mVsyncSwitchingSupported) { | 
 |             mCallback.onComposerHalVsync(display, timestamp, std::nullopt); | 
 |         } else { | 
 |             ALOGW("Unexpected onVsync callback on composer >= 2.4, ignoring."); | 
 |         } | 
 |         return Void(); | 
 |     } | 
 |  | 
 |     Return<void> onVsync_2_4(Display display, int64_t timestamp, | 
 |                              VsyncPeriodNanos vsyncPeriodNanos) override { | 
 |         if (mVsyncSwitchingSupported) { | 
 |             mCallback.onComposerHalVsync(display, timestamp, vsyncPeriodNanos); | 
 |         } else { | 
 |             ALOGW("Unexpected onVsync_2_4 callback on composer <= 2.3, ignoring."); | 
 |         } | 
 |         return Void(); | 
 |     } | 
 |  | 
 |     Return<void> onVsyncPeriodTimingChanged(Display display, | 
 |                                             const VsyncPeriodChangeTimeline& timeline) override { | 
 |         mCallback.onComposerHalVsyncPeriodTimingChanged(display, timeline); | 
 |         return Void(); | 
 |     } | 
 |  | 
 |     Return<void> onSeamlessPossible(Display display) override { | 
 |         mCallback.onComposerHalSeamlessPossible(display); | 
 |         return Void(); | 
 |     } | 
 |  | 
 | private: | 
 |     ComposerCallback& mCallback; | 
 |     const bool mVsyncSwitchingSupported; | 
 | }; | 
 |  | 
 | } // namespace | 
 |  | 
 | HidlComposer::~HidlComposer() = default; | 
 |  | 
 | namespace { | 
 |  | 
 | class BufferHandle { | 
 | public: | 
 |     explicit BufferHandle(const native_handle_t* buffer) { | 
 |         // nullptr is not a valid handle to HIDL | 
 |         mHandle = (buffer) ? buffer : native_handle_init(mStorage, 0, 0); | 
 |     } | 
 |  | 
 |     operator const hidl_handle&() const // NOLINT(google-explicit-constructor) | 
 |     { | 
 |         return mHandle; | 
 |     } | 
 |  | 
 | private: | 
 |     NATIVE_HANDLE_DECLARE_STORAGE(mStorage, 0, 0); | 
 |     hidl_handle mHandle; | 
 | }; | 
 |  | 
 | class FenceHandle { | 
 | public: | 
 |     FenceHandle(int fd, bool owned) : mOwned(owned) { | 
 |         native_handle_t* handle; | 
 |         if (fd >= 0) { | 
 |             handle = native_handle_init(mStorage, 1, 0); | 
 |             handle->data[0] = fd; | 
 |         } else { | 
 |             // nullptr is not a valid handle to HIDL | 
 |             handle = native_handle_init(mStorage, 0, 0); | 
 |         } | 
 |         mHandle = handle; | 
 |     } | 
 |  | 
 |     ~FenceHandle() { | 
 |         if (mOwned) { | 
 |             native_handle_close(mHandle); | 
 |         } | 
 |     } | 
 |  | 
 |     operator const hidl_handle&() const // NOLINT(google-explicit-constructor) | 
 |     { | 
 |         return mHandle; | 
 |     } | 
 |  | 
 | private: | 
 |     bool mOwned; | 
 |     NATIVE_HANDLE_DECLARE_STORAGE(mStorage, 1, 0); | 
 |     hidl_handle mHandle; | 
 | }; | 
 |  | 
 | // assume NO_RESOURCES when Status::isOk returns false | 
 | constexpr Error kDefaultError = Error::NO_RESOURCES; | 
 | constexpr V2_4::Error kDefaultError_2_4 = static_cast<V2_4::Error>(kDefaultError); | 
 |  | 
 | template <typename T, typename U> | 
 | T unwrapRet(Return<T>& ret, const U& default_val) { | 
 |     return (ret.isOk()) ? static_cast<T>(ret) : static_cast<T>(default_val); | 
 | } | 
 |  | 
 | Error unwrapRet(Return<Error>& ret) { | 
 |     return unwrapRet(ret, kDefaultError); | 
 | } | 
 |  | 
 | template <typename To, typename From> | 
 | To translate(From x) { | 
 |     return static_cast<To>(x); | 
 | } | 
 |  | 
 | template <typename To, typename From> | 
 | std::vector<To> translate(const hidl_vec<From>& in) { | 
 |     std::vector<To> out; | 
 |     out.reserve(in.size()); | 
 |     std::transform(in.begin(), in.end(), std::back_inserter(out), | 
 |                    [](From x) { return translate<To>(x); }); | 
 |     return out; | 
 | } | 
 |  | 
 | sp<GraphicBuffer> allocateClearSlotBuffer() { | 
 |     sp<GraphicBuffer> buffer = sp<GraphicBuffer>::make(1, 1, PIXEL_FORMAT_RGBX_8888, | 
 |                                                        GraphicBuffer::USAGE_HW_COMPOSER | | 
 |                                                                GraphicBuffer::USAGE_SW_READ_OFTEN | | 
 |                                                                GraphicBuffer::USAGE_SW_WRITE_OFTEN, | 
 |                                                        "HidlComposer"); | 
 |     if (!buffer || buffer->initCheck() != ::android::OK) { | 
 |         return nullptr; | 
 |     } | 
 |     return std::move(buffer); | 
 | } | 
 |  | 
 | } // anonymous namespace | 
 |  | 
 | HidlComposer::HidlComposer(const std::string& serviceName) | 
 |       : mClearSlotBuffer(allocateClearSlotBuffer()), mWriter(kWriterInitialSize) { | 
 |     mComposer = V2_1::IComposer::getService(serviceName); | 
 |  | 
 |     if (mComposer == nullptr) { | 
 |         LOG_ALWAYS_FATAL("failed to get hwcomposer service"); | 
 |     } | 
 |  | 
 |     if (sp<IComposer> composer_2_4 = IComposer::castFrom(mComposer)) { | 
 |         composer_2_4->createClient_2_4([&](const auto& tmpError, const auto& tmpClient) { | 
 |             if (tmpError == V2_4::Error::NONE) { | 
 |                 mClient = tmpClient; | 
 |                 mClient_2_2 = tmpClient; | 
 |                 mClient_2_3 = tmpClient; | 
 |                 mClient_2_4 = tmpClient; | 
 |             } | 
 |         }); | 
 |     } else if (sp<V2_3::IComposer> composer_2_3 = V2_3::IComposer::castFrom(mComposer)) { | 
 |         composer_2_3->createClient_2_3([&](const auto& tmpError, const auto& tmpClient) { | 
 |             if (tmpError == Error::NONE) { | 
 |                 mClient = tmpClient; | 
 |                 mClient_2_2 = tmpClient; | 
 |                 mClient_2_3 = tmpClient; | 
 |             } | 
 |         }); | 
 |     } else { | 
 |         mComposer->createClient([&](const auto& tmpError, const auto& tmpClient) { | 
 |             if (tmpError != Error::NONE) { | 
 |                 return; | 
 |             } | 
 |  | 
 |             mClient = tmpClient; | 
 |             if (sp<V2_2::IComposer> composer_2_2 = V2_2::IComposer::castFrom(mComposer)) { | 
 |                 mClient_2_2 = V2_2::IComposerClient::castFrom(mClient); | 
 |                 LOG_ALWAYS_FATAL_IF(mClient_2_2 == nullptr, | 
 |                                     "IComposer 2.2 did not return IComposerClient 2.2"); | 
 |             } | 
 |         }); | 
 |     } | 
 |  | 
 |     if (mClient == nullptr) { | 
 |         LOG_ALWAYS_FATAL("failed to create composer client"); | 
 |     } | 
 |  | 
 |     if (!mClearSlotBuffer) { | 
 |         LOG_ALWAYS_FATAL("Failed to allocate a buffer for clearing layer buffer slots"); | 
 |         return; | 
 |     } | 
 | } | 
 |  | 
 | bool HidlComposer::isSupported(OptionalFeature feature) const { | 
 |     switch (feature) { | 
 |         case OptionalFeature::RefreshRateSwitching: | 
 |             return mClient_2_4 != nullptr; | 
 |         case OptionalFeature::ExpectedPresentTime: | 
 |         case OptionalFeature::DisplayBrightnessCommand: | 
 |         case OptionalFeature::KernelIdleTimer: | 
 |         case OptionalFeature::PhysicalDisplayOrientation: | 
 |             return false; | 
 |     } | 
 | } | 
 |  | 
 | std::vector<Capability> HidlComposer::getCapabilities() { | 
 |     std::vector<Capability> capabilities; | 
 |     mComposer->getCapabilities([&](const auto& tmpCapabilities) { | 
 |         capabilities = translate<Capability>(tmpCapabilities); | 
 |     }); | 
 |     return capabilities; | 
 | } | 
 |  | 
 | std::string HidlComposer::dumpDebugInfo() { | 
 |     std::string info; | 
 |     mComposer->dumpDebugInfo([&](const auto& tmpInfo) { info = tmpInfo.c_str(); }); | 
 |  | 
 |     return info; | 
 | } | 
 |  | 
 | void HidlComposer::registerCallback(const sp<IComposerCallback>& callback) { | 
 |     android::hardware::setMinSchedulerPolicy(callback, SCHED_FIFO, 2); | 
 |  | 
 |     auto ret = [&]() { | 
 |         if (mClient_2_4) { | 
 |             return mClient_2_4->registerCallback_2_4(callback); | 
 |         } | 
 |         return mClient->registerCallback(callback); | 
 |     }(); | 
 |     if (!ret.isOk()) { | 
 |         ALOGE("failed to register IComposerCallback"); | 
 |     } | 
 | } | 
 |  | 
 | void HidlComposer::resetCommands(Display) { | 
 |     mWriter.reset(); | 
 | } | 
 |  | 
 | Error HidlComposer::executeCommands(Display) { | 
 |     return execute(); | 
 | } | 
 |  | 
 | uint32_t HidlComposer::getMaxVirtualDisplayCount() { | 
 |     auto ret = mClient->getMaxVirtualDisplayCount(); | 
 |     return unwrapRet(ret, 0); | 
 | } | 
 |  | 
 | Error HidlComposer::createVirtualDisplay(uint32_t width, uint32_t height, PixelFormat* format, | 
 |                                          Display* outDisplay) { | 
 |     const uint32_t bufferSlotCount = 1; | 
 |     Error error = kDefaultError; | 
 |     if (mClient_2_2) { | 
 |         mClient_2_2->createVirtualDisplay_2_2(width, height, | 
 |                                               static_cast<types::V1_1::PixelFormat>(*format), | 
 |                                               bufferSlotCount, | 
 |                                               [&](const auto& tmpError, const auto& tmpDisplay, | 
 |                                                   const auto& tmpFormat) { | 
 |                                                   error = tmpError; | 
 |                                                   if (error != Error::NONE) { | 
 |                                                       return; | 
 |                                                   } | 
 |  | 
 |                                                   *outDisplay = tmpDisplay; | 
 |                                                   *format = static_cast<types::V1_2::PixelFormat>( | 
 |                                                           tmpFormat); | 
 |                                               }); | 
 |     } else { | 
 |         mClient->createVirtualDisplay(width, height, static_cast<types::V1_0::PixelFormat>(*format), | 
 |                                       bufferSlotCount, | 
 |                                       [&](const auto& tmpError, const auto& tmpDisplay, | 
 |                                           const auto& tmpFormat) { | 
 |                                           error = tmpError; | 
 |                                           if (error != Error::NONE) { | 
 |                                               return; | 
 |                                           } | 
 |  | 
 |                                           *outDisplay = tmpDisplay; | 
 |                                           *format = static_cast<PixelFormat>(tmpFormat); | 
 |                                       }); | 
 |     } | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::destroyVirtualDisplay(Display display) { | 
 |     auto ret = mClient->destroyVirtualDisplay(display); | 
 |     return unwrapRet(ret); | 
 | } | 
 |  | 
 | Error HidlComposer::acceptDisplayChanges(Display display) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.acceptDisplayChanges(); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::createLayer(Display display, Layer* outLayer) { | 
 |     Error error = kDefaultError; | 
 |     mClient->createLayer(display, kMaxLayerBufferCount, | 
 |                          [&](const auto& tmpError, const auto& tmpLayer) { | 
 |                              error = tmpError; | 
 |                              if (error != Error::NONE) { | 
 |                                  return; | 
 |                              } | 
 |  | 
 |                              *outLayer = tmpLayer; | 
 |                          }); | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::destroyLayer(Display display, Layer layer) { | 
 |     auto ret = mClient->destroyLayer(display, layer); | 
 |     return unwrapRet(ret); | 
 | } | 
 |  | 
 | Error HidlComposer::getActiveConfig(Display display, Config* outConfig) { | 
 |     Error error = kDefaultError; | 
 |     mClient->getActiveConfig(display, [&](const auto& tmpError, const auto& tmpConfig) { | 
 |         error = tmpError; | 
 |         if (error != Error::NONE) { | 
 |             return; | 
 |         } | 
 |  | 
 |         *outConfig = tmpConfig; | 
 |     }); | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::getChangedCompositionTypes( | 
 |         Display display, std::vector<Layer>* outLayers, | 
 |         std::vector<aidl::android::hardware::graphics::composer3::Composition>* outTypes) { | 
 |     mReader.takeChangedCompositionTypes(display, outLayers, outTypes); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::getColorModes(Display display, std::vector<ColorMode>* outModes) { | 
 |     Error error = kDefaultError; | 
 |  | 
 |     if (mClient_2_3) { | 
 |         mClient_2_3->getColorModes_2_3(display, [&](const auto& tmpError, const auto& tmpModes) { | 
 |             error = tmpError; | 
 |             if (error != Error::NONE) { | 
 |                 return; | 
 |             } | 
 |  | 
 |             *outModes = tmpModes; | 
 |         }); | 
 |     } else if (mClient_2_2) { | 
 |         mClient_2_2->getColorModes_2_2(display, [&](const auto& tmpError, const auto& tmpModes) { | 
 |             error = tmpError; | 
 |             if (error != Error::NONE) { | 
 |                 return; | 
 |             } | 
 |  | 
 |             for (types::V1_1::ColorMode colorMode : tmpModes) { | 
 |                 outModes->push_back(static_cast<ColorMode>(colorMode)); | 
 |             } | 
 |         }); | 
 |     } else { | 
 |         mClient->getColorModes(display, [&](const auto& tmpError, const auto& tmpModes) { | 
 |             error = tmpError; | 
 |             if (error != Error::NONE) { | 
 |                 return; | 
 |             } | 
 |             for (types::V1_0::ColorMode colorMode : tmpModes) { | 
 |                 outModes->push_back(static_cast<ColorMode>(colorMode)); | 
 |             } | 
 |         }); | 
 |     } | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::getDisplayAttribute(Display display, Config config, | 
 |                                         IComposerClient::Attribute attribute, int32_t* outValue) { | 
 |     Error error = kDefaultError; | 
 |     if (mClient_2_4) { | 
 |         mClient_2_4->getDisplayAttribute_2_4(display, config, attribute, | 
 |                                              [&](const auto& tmpError, const auto& tmpValue) { | 
 |                                                  error = static_cast<Error>(tmpError); | 
 |                                                  if (error != Error::NONE) { | 
 |                                                      return; | 
 |                                                  } | 
 |  | 
 |                                                  *outValue = tmpValue; | 
 |                                              }); | 
 |     } else { | 
 |         mClient->getDisplayAttribute(display, config, | 
 |                                      static_cast<V2_1::IComposerClient::Attribute>(attribute), | 
 |                                      [&](const auto& tmpError, const auto& tmpValue) { | 
 |                                          error = tmpError; | 
 |                                          if (error != Error::NONE) { | 
 |                                              return; | 
 |                                          } | 
 |  | 
 |                                          *outValue = tmpValue; | 
 |                                      }); | 
 |     } | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::getDisplayConfigs(Display display, std::vector<Config>* outConfigs) { | 
 |     Error error = kDefaultError; | 
 |     mClient->getDisplayConfigs(display, [&](const auto& tmpError, const auto& tmpConfigs) { | 
 |         error = tmpError; | 
 |         if (error != Error::NONE) { | 
 |             return; | 
 |         } | 
 |  | 
 |         *outConfigs = tmpConfigs; | 
 |     }); | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::getDisplayName(Display display, std::string* outName) { | 
 |     Error error = kDefaultError; | 
 |     mClient->getDisplayName(display, [&](const auto& tmpError, const auto& tmpName) { | 
 |         error = tmpError; | 
 |         if (error != Error::NONE) { | 
 |             return; | 
 |         } | 
 |  | 
 |         *outName = tmpName.c_str(); | 
 |     }); | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::getDisplayRequests(Display display, uint32_t* outDisplayRequestMask, | 
 |                                        std::vector<Layer>* outLayers, | 
 |                                        std::vector<uint32_t>* outLayerRequestMasks) { | 
 |     mReader.takeDisplayRequests(display, outDisplayRequestMask, outLayers, outLayerRequestMasks); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::getDozeSupport(Display display, bool* outSupport) { | 
 |     Error error = kDefaultError; | 
 |     mClient->getDozeSupport(display, [&](const auto& tmpError, const auto& tmpSupport) { | 
 |         error = tmpError; | 
 |         if (error != Error::NONE) { | 
 |             return; | 
 |         } | 
 |  | 
 |         *outSupport = tmpSupport; | 
 |     }); | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::hasDisplayIdleTimerCapability(Display, bool*) { | 
 |     LOG_ALWAYS_FATAL("hasDisplayIdleTimerCapability should have never been called on this as " | 
 |                      "OptionalFeature::KernelIdleTimer is not supported on HIDL"); | 
 | } | 
 |  | 
 | Error HidlComposer::getHdrCapabilities(Display display, std::vector<Hdr>* outHdrTypes, | 
 |                                        float* outMaxLuminance, float* outMaxAverageLuminance, | 
 |                                        float* outMinLuminance) { | 
 |     Error error = kDefaultError; | 
 |     if (mClient_2_3) { | 
 |         mClient_2_3->getHdrCapabilities_2_3(display, | 
 |                                             [&](const auto& tmpError, const auto& tmpHdrTypes, | 
 |                                                 const auto& tmpMaxLuminance, | 
 |                                                 const auto& tmpMaxAverageLuminance, | 
 |                                                 const auto& tmpMinLuminance) { | 
 |                                                 error = tmpError; | 
 |                                                 if (error != Error::NONE) { | 
 |                                                     return; | 
 |                                                 } | 
 |                                                 *outHdrTypes = translate<ui::Hdr>(tmpHdrTypes); | 
 |  | 
 |                                                 *outMaxLuminance = tmpMaxLuminance; | 
 |                                                 *outMaxAverageLuminance = tmpMaxAverageLuminance; | 
 |                                                 *outMinLuminance = tmpMinLuminance; | 
 |                                             }); | 
 |     } else { | 
 |         mClient->getHdrCapabilities(display, | 
 |                                     [&](const auto& tmpError, const auto& tmpHdrTypes, | 
 |                                         const auto& tmpMaxLuminance, | 
 |                                         const auto& tmpMaxAverageLuminance, | 
 |                                         const auto& tmpMinLuminance) { | 
 |                                         error = tmpError; | 
 |                                         if (error != Error::NONE) { | 
 |                                             return; | 
 |                                         } | 
 |                                         *outHdrTypes = translate<ui::Hdr>(tmpHdrTypes); | 
 |  | 
 |                                         *outMaxLuminance = tmpMaxLuminance; | 
 |                                         *outMaxAverageLuminance = tmpMaxAverageLuminance; | 
 |                                         *outMinLuminance = tmpMinLuminance; | 
 |                                     }); | 
 |     } | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::getOverlaySupport(OverlayProperties* /*outProperties*/) { | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::getReleaseFences(Display display, std::vector<Layer>* outLayers, | 
 |                                      std::vector<int>* outReleaseFences) { | 
 |     mReader.takeReleaseFences(display, outLayers, outReleaseFences); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::presentDisplay(Display display, int* outPresentFence) { | 
 |     ATRACE_NAME("HwcPresentDisplay"); | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.presentDisplay(); | 
 |  | 
 |     Error error = execute(); | 
 |     if (error != Error::NONE) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     mReader.takePresentFence(display, outPresentFence); | 
 |  | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setActiveConfig(Display display, Config config) { | 
 |     auto ret = mClient->setActiveConfig(display, config); | 
 |     return unwrapRet(ret); | 
 | } | 
 |  | 
 | Error HidlComposer::setClientTarget(Display display, uint32_t slot, const sp<GraphicBuffer>& target, | 
 |                                     int acquireFence, Dataspace dataspace, | 
 |                                     const std::vector<IComposerClient::Rect>& damage) { | 
 |     mWriter.selectDisplay(display); | 
 |  | 
 |     const native_handle_t* handle = nullptr; | 
 |     if (target.get()) { | 
 |         handle = target->getNativeBuffer()->handle; | 
 |     } | 
 |  | 
 |     mWriter.setClientTarget(slot, handle, acquireFence, dataspace, damage); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setColorMode(Display display, ColorMode mode, RenderIntent renderIntent) { | 
 |     hardware::Return<Error> ret(kDefaultError); | 
 |     if (mClient_2_3) { | 
 |         ret = mClient_2_3->setColorMode_2_3(display, mode, renderIntent); | 
 |     } else if (mClient_2_2) { | 
 |         ret = mClient_2_2->setColorMode_2_2(display, static_cast<types::V1_1::ColorMode>(mode), | 
 |                                             renderIntent); | 
 |     } else { | 
 |         ret = mClient->setColorMode(display, static_cast<types::V1_0::ColorMode>(mode)); | 
 |     } | 
 |     return unwrapRet(ret); | 
 | } | 
 |  | 
 | Error HidlComposer::setColorTransform(Display display, const float* matrix) { | 
 |     mWriter.selectDisplay(display); | 
 |     const bool isIdentity = (mat4(matrix) == mat4()); | 
 |     mWriter.setColorTransform(matrix, | 
 |                               isIdentity ? ColorTransform::IDENTITY | 
 |                                          : ColorTransform::ARBITRARY_MATRIX); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setOutputBuffer(Display display, const native_handle_t* buffer, | 
 |                                     int releaseFence) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.setOutputBuffer(0, buffer, dup(releaseFence)); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setPowerMode(Display display, IComposerClient::PowerMode mode) { | 
 |     Return<Error> ret(Error::UNSUPPORTED); | 
 |     if (mClient_2_2) { | 
 |         ret = mClient_2_2->setPowerMode_2_2(display, mode); | 
 |     } else if (mode != IComposerClient::PowerMode::ON_SUSPEND) { | 
 |         ret = mClient->setPowerMode(display, static_cast<V2_1::IComposerClient::PowerMode>(mode)); | 
 |     } | 
 |  | 
 |     return unwrapRet(ret); | 
 | } | 
 |  | 
 | Error HidlComposer::setVsyncEnabled(Display display, IComposerClient::Vsync enabled) { | 
 |     auto ret = mClient->setVsyncEnabled(display, enabled); | 
 |     return unwrapRet(ret); | 
 | } | 
 |  | 
 | Error HidlComposer::setClientTargetSlotCount(Display display) { | 
 |     const uint32_t bufferSlotCount = BufferQueue::NUM_BUFFER_SLOTS; | 
 |     auto ret = mClient->setClientTargetSlotCount(display, bufferSlotCount); | 
 |     return unwrapRet(ret); | 
 | } | 
 |  | 
 | Error HidlComposer::validateDisplay(Display display, nsecs_t /*expectedPresentTime*/, | 
 |                                     uint32_t* outNumTypes, uint32_t* outNumRequests) { | 
 |     ATRACE_NAME("HwcValidateDisplay"); | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.validateDisplay(); | 
 |  | 
 |     Error error = execute(); | 
 |     if (error != Error::NONE) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     mReader.hasChanges(display, outNumTypes, outNumRequests); | 
 |  | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::presentOrValidateDisplay(Display display, nsecs_t /*expectedPresentTime*/, | 
 |                                              uint32_t* outNumTypes, uint32_t* outNumRequests, | 
 |                                              int* outPresentFence, uint32_t* state) { | 
 |     ATRACE_NAME("HwcPresentOrValidateDisplay"); | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.presentOrvalidateDisplay(); | 
 |  | 
 |     Error error = execute(); | 
 |     if (error != Error::NONE) { | 
 |         return error; | 
 |     } | 
 |  | 
 |     mReader.takePresentOrValidateStage(display, state); | 
 |  | 
 |     if (*state == 1) { // Present succeeded | 
 |         mReader.takePresentFence(display, outPresentFence); | 
 |     } | 
 |  | 
 |     if (*state == 0) { // Validate succeeded. | 
 |         mReader.hasChanges(display, outNumTypes, outNumRequests); | 
 |     } | 
 |  | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setCursorPosition(Display display, Layer layer, int32_t x, int32_t y) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerCursorPosition(x, y); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerBuffer(Display display, Layer layer, uint32_t slot, | 
 |                                    const sp<GraphicBuffer>& buffer, int acquireFence) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |  | 
 |     const native_handle_t* handle = nullptr; | 
 |     if (buffer.get()) { | 
 |         handle = buffer->getNativeBuffer()->handle; | 
 |     } | 
 |  | 
 |     mWriter.setLayerBuffer(slot, handle, acquireFence); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerBufferSlotsToClear(Display display, Layer layer, | 
 |                                                const std::vector<uint32_t>& slotsToClear, | 
 |                                                uint32_t activeBufferSlot) { | 
 |     if (slotsToClear.empty()) { | 
 |         return Error::NONE; | 
 |     } | 
 |     // Backwards compatible way of clearing buffer is to set the layer buffer with a placeholder | 
 |     // buffer, using the slot that needs to cleared... tricky. | 
 |     for (uint32_t slot : slotsToClear) { | 
 |         // Don't clear the active buffer slot because we need to restore the active buffer after | 
 |         // setting the requested buffer slots with a placeholder buffer. | 
 |         if (slot != activeBufferSlot) { | 
 |             mWriter.selectDisplay(display); | 
 |             mWriter.selectLayer(layer); | 
 |             mWriter.setLayerBuffer(slot, mClearSlotBuffer->handle, /*fence*/ -1); | 
 |         } | 
 |     } | 
 |     // Since we clear buffers by setting them to a placeholder buffer, we want to make sure that the | 
 |     // last setLayerBuffer command is sent with the currently active buffer, not the placeholder | 
 |     // buffer, so that there is no perceptual change. | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerBuffer(activeBufferSlot, /*buffer*/ nullptr, /*fence*/ -1); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerSurfaceDamage(Display display, Layer layer, | 
 |                                           const std::vector<IComposerClient::Rect>& damage) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerSurfaceDamage(damage); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerBlendMode(Display display, Layer layer, | 
 |                                       IComposerClient::BlendMode mode) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerBlendMode(mode); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | static IComposerClient::Color to_hidl_type( | 
 |         aidl::android::hardware::graphics::composer3::Color color) { | 
 |     const auto floatColorToUint8Clamped = [](float val) -> uint8_t { | 
 |         const auto intVal = static_cast<uint64_t>(std::round(255.0f * val)); | 
 |         const auto minVal = static_cast<uint64_t>(0); | 
 |         const auto maxVal = static_cast<uint64_t>(255); | 
 |         return std::clamp(intVal, minVal, maxVal); | 
 |     }; | 
 |  | 
 |     return IComposerClient::Color{ | 
 |             floatColorToUint8Clamped(color.r), | 
 |             floatColorToUint8Clamped(color.g), | 
 |             floatColorToUint8Clamped(color.b), | 
 |             floatColorToUint8Clamped(color.a), | 
 |     }; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerColor( | 
 |         Display display, Layer layer, | 
 |         const aidl::android::hardware::graphics::composer3::Color& color) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerColor(to_hidl_type(color)); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | static IComposerClient::Composition to_hidl_type( | 
 |         aidl::android::hardware::graphics::composer3::Composition type) { | 
 |     LOG_ALWAYS_FATAL_IF(static_cast<int32_t>(type) > | 
 |                                 static_cast<int32_t>(IComposerClient::Composition::SIDEBAND), | 
 |                         "Trying to use %s, which is not supported by HidlComposer!", | 
 |                         android::to_string(type).c_str()); | 
 |  | 
 |     return static_cast<IComposerClient::Composition>(type); | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerCompositionType( | 
 |         Display display, Layer layer, | 
 |         aidl::android::hardware::graphics::composer3::Composition type) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerCompositionType(to_hidl_type(type)); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerDataspace(Display display, Layer layer, Dataspace dataspace) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerDataspace(dataspace); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerDisplayFrame(Display display, Layer layer, | 
 |                                          const IComposerClient::Rect& frame) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerDisplayFrame(frame); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerPlaneAlpha(Display display, Layer layer, float alpha) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerPlaneAlpha(alpha); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerSidebandStream(Display display, Layer layer, | 
 |                                            const native_handle_t* stream) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerSidebandStream(stream); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerSourceCrop(Display display, Layer layer, | 
 |                                        const IComposerClient::FRect& crop) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerSourceCrop(crop); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerTransform(Display display, Layer layer, Transform transform) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerTransform(transform); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerVisibleRegion(Display display, Layer layer, | 
 |                                           const std::vector<IComposerClient::Rect>& visible) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerVisibleRegion(visible); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerZOrder(Display display, Layer layer, uint32_t z) { | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerZOrder(z); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::execute() { | 
 |     // prepare input command queue | 
 |     bool queueChanged = false; | 
 |     uint32_t commandLength = 0; | 
 |     hidl_vec<hidl_handle> commandHandles; | 
 |     if (!mWriter.writeQueue(&queueChanged, &commandLength, &commandHandles)) { | 
 |         mWriter.reset(); | 
 |         return Error::NO_RESOURCES; | 
 |     } | 
 |  | 
 |     // set up new input command queue if necessary | 
 |     if (queueChanged) { | 
 |         auto ret = mClient->setInputCommandQueue(*mWriter.getMQDescriptor()); | 
 |         auto error = unwrapRet(ret); | 
 |         if (error != Error::NONE) { | 
 |             mWriter.reset(); | 
 |             return error; | 
 |         } | 
 |     } | 
 |  | 
 |     if (commandLength == 0) { | 
 |         mWriter.reset(); | 
 |         return Error::NONE; | 
 |     } | 
 |  | 
 |     Error error = kDefaultError; | 
 |     hardware::Return<void> ret; | 
 |     auto hidl_callback = [&](const auto& tmpError, const auto& tmpOutChanged, | 
 |                              const auto& tmpOutLength, const auto& tmpOutHandles) { | 
 |         error = tmpError; | 
 |  | 
 |         // set up new output command queue if necessary | 
 |         if (error == Error::NONE && tmpOutChanged) { | 
 |             error = kDefaultError; | 
 |             mClient->getOutputCommandQueue([&](const auto& tmpError, const auto& tmpDescriptor) { | 
 |                 error = tmpError; | 
 |                 if (error != Error::NONE) { | 
 |                     return; | 
 |                 } | 
 |  | 
 |                 mReader.setMQDescriptor(tmpDescriptor); | 
 |             }); | 
 |         } | 
 |  | 
 |         if (error != Error::NONE) { | 
 |             return; | 
 |         } | 
 |  | 
 |         if (mReader.readQueue(tmpOutLength, tmpOutHandles)) { | 
 |             error = mReader.parse(); | 
 |             mReader.reset(); | 
 |         } else { | 
 |             error = Error::NO_RESOURCES; | 
 |         } | 
 |     }; | 
 |     if (mClient_2_2) { | 
 |         ret = mClient_2_2->executeCommands_2_2(commandLength, commandHandles, hidl_callback); | 
 |     } else { | 
 |         ret = mClient->executeCommands(commandLength, commandHandles, hidl_callback); | 
 |     } | 
 |     // executeCommands can fail because of out-of-fd and we do not want to | 
 |     // abort() in that case | 
 |     if (!ret.isOk()) { | 
 |         ALOGE("executeCommands failed because of %s", ret.description().c_str()); | 
 |     } | 
 |  | 
 |     if (error == Error::NONE) { | 
 |         std::vector<CommandReader::CommandError> commandErrors = mReader.takeErrors(); | 
 |  | 
 |         for (const auto& cmdErr : commandErrors) { | 
 |             auto command = | 
 |                     static_cast<IComposerClient::Command>(mWriter.getCommand(cmdErr.location)); | 
 |  | 
 |             if (command == IComposerClient::Command::VALIDATE_DISPLAY || | 
 |                 command == IComposerClient::Command::PRESENT_DISPLAY || | 
 |                 command == IComposerClient::Command::PRESENT_OR_VALIDATE_DISPLAY) { | 
 |                 error = cmdErr.error; | 
 |             } else { | 
 |                 ALOGW("command 0x%x generated error %d", command, cmdErr.error); | 
 |             } | 
 |         } | 
 |     } | 
 |  | 
 |     mWriter.reset(); | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | // Composer HAL 2.2 | 
 |  | 
 | Error HidlComposer::setLayerPerFrameMetadata( | 
 |         Display display, Layer layer, | 
 |         const std::vector<IComposerClient::PerFrameMetadata>& perFrameMetadatas) { | 
 |     if (!mClient_2_2) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |  | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerPerFrameMetadata(perFrameMetadatas); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | std::vector<IComposerClient::PerFrameMetadataKey> HidlComposer::getPerFrameMetadataKeys( | 
 |         Display display) { | 
 |     std::vector<IComposerClient::PerFrameMetadataKey> keys; | 
 |     if (!mClient_2_2) { | 
 |         return keys; | 
 |     } | 
 |  | 
 |     Error error = kDefaultError; | 
 |     if (mClient_2_3) { | 
 |         mClient_2_3->getPerFrameMetadataKeys_2_3(display, | 
 |                                                  [&](const auto& tmpError, const auto& tmpKeys) { | 
 |                                                      error = tmpError; | 
 |                                                      if (error != Error::NONE) { | 
 |                                                          ALOGW("getPerFrameMetadataKeys failed " | 
 |                                                                "with %d", | 
 |                                                                tmpError); | 
 |                                                          return; | 
 |                                                      } | 
 |                                                      keys = tmpKeys; | 
 |                                                  }); | 
 |     } else { | 
 |         mClient_2_2 | 
 |                 ->getPerFrameMetadataKeys(display, [&](const auto& tmpError, const auto& tmpKeys) { | 
 |                     error = tmpError; | 
 |                     if (error != Error::NONE) { | 
 |                         ALOGW("getPerFrameMetadataKeys failed with %d", tmpError); | 
 |                         return; | 
 |                     } | 
 |  | 
 |                     keys.clear(); | 
 |                     for (auto key : tmpKeys) { | 
 |                         keys.push_back(static_cast<IComposerClient::PerFrameMetadataKey>(key)); | 
 |                     } | 
 |                 }); | 
 |     } | 
 |  | 
 |     return keys; | 
 | } | 
 |  | 
 | Error HidlComposer::getRenderIntents(Display display, ColorMode colorMode, | 
 |                                      std::vector<RenderIntent>* outRenderIntents) { | 
 |     if (!mClient_2_2) { | 
 |         outRenderIntents->push_back(RenderIntent::COLORIMETRIC); | 
 |         return Error::NONE; | 
 |     } | 
 |  | 
 |     Error error = kDefaultError; | 
 |  | 
 |     auto getRenderIntentsLambda = [&](const auto& tmpError, const auto& tmpKeys) { | 
 |         error = tmpError; | 
 |         if (error != Error::NONE) { | 
 |             return; | 
 |         } | 
 |  | 
 |         *outRenderIntents = tmpKeys; | 
 |     }; | 
 |  | 
 |     if (mClient_2_3) { | 
 |         mClient_2_3->getRenderIntents_2_3(display, colorMode, getRenderIntentsLambda); | 
 |     } else { | 
 |         mClient_2_2->getRenderIntents(display, static_cast<types::V1_1::ColorMode>(colorMode), | 
 |                                       getRenderIntentsLambda); | 
 |     } | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::getDataspaceSaturationMatrix(Dataspace dataspace, mat4* outMatrix) { | 
 |     if (!mClient_2_2) { | 
 |         *outMatrix = mat4(); | 
 |         return Error::NONE; | 
 |     } | 
 |  | 
 |     Error error = kDefaultError; | 
 |     mClient_2_2->getDataspaceSaturationMatrix(static_cast<types::V1_1::Dataspace>(dataspace), | 
 |                                               [&](const auto& tmpError, const auto& tmpMatrix) { | 
 |                                                   error = tmpError; | 
 |                                                   if (error != Error::NONE) { | 
 |                                                       return; | 
 |                                                   } | 
 |                                                   *outMatrix = mat4(tmpMatrix.data()); | 
 |                                               }); | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | // Composer HAL 2.3 | 
 |  | 
 | Error HidlComposer::getDisplayIdentificationData(Display display, uint8_t* outPort, | 
 |                                                  std::vector<uint8_t>* outData) { | 
 |     if (!mClient_2_3) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |  | 
 |     Error error = kDefaultError; | 
 |     mClient_2_3->getDisplayIdentificationData(display, | 
 |                                               [&](const auto& tmpError, const auto& tmpPort, | 
 |                                                   const auto& tmpData) { | 
 |                                                   error = tmpError; | 
 |                                                   if (error != Error::NONE) { | 
 |                                                       return; | 
 |                                                   } | 
 |  | 
 |                                                   *outPort = tmpPort; | 
 |                                                   *outData = tmpData; | 
 |                                               }); | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerColorTransform(Display display, Layer layer, const float* matrix) { | 
 |     if (!mClient_2_3) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |  | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerColorTransform(matrix); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::getDisplayedContentSamplingAttributes(Display display, PixelFormat* outFormat, | 
 |                                                           Dataspace* outDataspace, | 
 |                                                           uint8_t* outComponentMask) { | 
 |     if (!outFormat || !outDataspace || !outComponentMask) { | 
 |         return Error::BAD_PARAMETER; | 
 |     } | 
 |     if (!mClient_2_3) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |     Error error = kDefaultError; | 
 |     mClient_2_3->getDisplayedContentSamplingAttributes(display, | 
 |                                                        [&](const auto tmpError, | 
 |                                                            const auto& tmpFormat, | 
 |                                                            const auto& tmpDataspace, | 
 |                                                            const auto& tmpComponentMask) { | 
 |                                                            error = tmpError; | 
 |                                                            if (error == Error::NONE) { | 
 |                                                                *outFormat = tmpFormat; | 
 |                                                                *outDataspace = tmpDataspace; | 
 |                                                                *outComponentMask = | 
 |                                                                        static_cast<uint8_t>( | 
 |                                                                                tmpComponentMask); | 
 |                                                            } | 
 |                                                        }); | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::setDisplayContentSamplingEnabled(Display display, bool enabled, | 
 |                                                      uint8_t componentMask, uint64_t maxFrames) { | 
 |     if (!mClient_2_3) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |  | 
 |     auto enable = enabled ? V2_3::IComposerClient::DisplayedContentSampling::ENABLE | 
 |                           : V2_3::IComposerClient::DisplayedContentSampling::DISABLE; | 
 |     return mClient_2_3->setDisplayedContentSamplingEnabled(display, enable, componentMask, | 
 |                                                            maxFrames); | 
 | } | 
 |  | 
 | Error HidlComposer::getDisplayedContentSample(Display display, uint64_t maxFrames, | 
 |                                               uint64_t timestamp, DisplayedFrameStats* outStats) { | 
 |     if (!outStats) { | 
 |         return Error::BAD_PARAMETER; | 
 |     } | 
 |     if (!mClient_2_3) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |     Error error = kDefaultError; | 
 |     mClient_2_3->getDisplayedContentSample(display, maxFrames, timestamp, | 
 |                                            [&](const auto tmpError, auto tmpNumFrames, | 
 |                                                const auto& tmpSamples0, const auto& tmpSamples1, | 
 |                                                const auto& tmpSamples2, const auto& tmpSamples3) { | 
 |                                                error = tmpError; | 
 |                                                if (error == Error::NONE) { | 
 |                                                    outStats->numFrames = tmpNumFrames; | 
 |                                                    outStats->component_0_sample = tmpSamples0; | 
 |                                                    outStats->component_1_sample = tmpSamples1; | 
 |                                                    outStats->component_2_sample = tmpSamples2; | 
 |                                                    outStats->component_3_sample = tmpSamples3; | 
 |                                                } | 
 |                                            }); | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerPerFrameMetadataBlobs( | 
 |         Display display, Layer layer, | 
 |         const std::vector<IComposerClient::PerFrameMetadataBlob>& metadata) { | 
 |     if (!mClient_2_3) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |  | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerPerFrameMetadataBlobs(metadata); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setDisplayBrightness(Display display, float brightness, float, | 
 |                                          const DisplayBrightnessOptions&) { | 
 |     if (!mClient_2_3) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |     return mClient_2_3->setDisplayBrightness(display, brightness); | 
 | } | 
 |  | 
 | // Composer HAL 2.4 | 
 |  | 
 | Error HidlComposer::getDisplayCapabilities(Display display, | 
 |                                            std::vector<DisplayCapability>* outCapabilities) { | 
 |     if (!mClient_2_3) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |  | 
 |     V2_4::Error error = kDefaultError_2_4; | 
 |     if (mClient_2_4) { | 
 |         mClient_2_4->getDisplayCapabilities_2_4(display, | 
 |                                                 [&](const auto& tmpError, const auto& tmpCaps) { | 
 |                                                     error = tmpError; | 
 |                                                     if (error != V2_4::Error::NONE) { | 
 |                                                         return; | 
 |                                                     } | 
 |                                                     *outCapabilities = | 
 |                                                             translate<DisplayCapability>(tmpCaps); | 
 |                                                 }); | 
 |     } else { | 
 |         mClient_2_3 | 
 |                 ->getDisplayCapabilities(display, [&](const auto& tmpError, const auto& tmpCaps) { | 
 |                     error = static_cast<V2_4::Error>(tmpError); | 
 |                     if (error != V2_4::Error::NONE) { | 
 |                         return; | 
 |                     } | 
 |  | 
 |                     *outCapabilities = translate<DisplayCapability>(tmpCaps); | 
 |                 }); | 
 |     } | 
 |  | 
 |     return static_cast<Error>(error); | 
 | } | 
 |  | 
 | V2_4::Error HidlComposer::getDisplayConnectionType( | 
 |         Display display, IComposerClient::DisplayConnectionType* outType) { | 
 |     using Error = V2_4::Error; | 
 |     if (!mClient_2_4) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |  | 
 |     Error error = kDefaultError_2_4; | 
 |     mClient_2_4->getDisplayConnectionType(display, [&](const auto& tmpError, const auto& tmpType) { | 
 |         error = tmpError; | 
 |         if (error != V2_4::Error::NONE) { | 
 |             return; | 
 |         } | 
 |  | 
 |         *outType = tmpType; | 
 |     }); | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | V2_4::Error HidlComposer::getDisplayVsyncPeriod(Display display, VsyncPeriodNanos* outVsyncPeriod) { | 
 |     using Error = V2_4::Error; | 
 |     if (!mClient_2_4) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |  | 
 |     Error error = kDefaultError_2_4; | 
 |     mClient_2_4->getDisplayVsyncPeriod(display, | 
 |                                        [&](const auto& tmpError, const auto& tmpVsyncPeriod) { | 
 |                                            error = tmpError; | 
 |                                            if (error != Error::NONE) { | 
 |                                                return; | 
 |                                            } | 
 |  | 
 |                                            *outVsyncPeriod = tmpVsyncPeriod; | 
 |                                        }); | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | V2_4::Error HidlComposer::setActiveConfigWithConstraints( | 
 |         Display display, Config config, | 
 |         const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints, | 
 |         VsyncPeriodChangeTimeline* outTimeline) { | 
 |     using Error = V2_4::Error; | 
 |     if (!mClient_2_4) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |  | 
 |     Error error = kDefaultError_2_4; | 
 |     mClient_2_4->setActiveConfigWithConstraints(display, config, vsyncPeriodChangeConstraints, | 
 |                                                 [&](const auto& tmpError, const auto& tmpTimeline) { | 
 |                                                     error = tmpError; | 
 |                                                     if (error != Error::NONE) { | 
 |                                                         return; | 
 |                                                     } | 
 |  | 
 |                                                     *outTimeline = tmpTimeline; | 
 |                                                 }); | 
 |  | 
 |     return error; | 
 | } | 
 |  | 
 | V2_4::Error HidlComposer::setAutoLowLatencyMode(Display display, bool on) { | 
 |     using Error = V2_4::Error; | 
 |     if (!mClient_2_4) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |  | 
 |     return mClient_2_4->setAutoLowLatencyMode(display, on); | 
 | } | 
 |  | 
 | V2_4::Error HidlComposer::getSupportedContentTypes( | 
 |         Display displayId, std::vector<IComposerClient::ContentType>* outSupportedContentTypes) { | 
 |     using Error = V2_4::Error; | 
 |     if (!mClient_2_4) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |  | 
 |     Error error = kDefaultError_2_4; | 
 |     mClient_2_4->getSupportedContentTypes(displayId, | 
 |                                           [&](const auto& tmpError, | 
 |                                               const auto& tmpSupportedContentTypes) { | 
 |                                               error = tmpError; | 
 |                                               if (error != Error::NONE) { | 
 |                                                   return; | 
 |                                               } | 
 |  | 
 |                                               *outSupportedContentTypes = tmpSupportedContentTypes; | 
 |                                           }); | 
 |     return error; | 
 | } | 
 |  | 
 | V2_4::Error HidlComposer::setContentType(Display display, | 
 |                                          IComposerClient::ContentType contentType) { | 
 |     using Error = V2_4::Error; | 
 |     if (!mClient_2_4) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |  | 
 |     return mClient_2_4->setContentType(display, contentType); | 
 | } | 
 |  | 
 | V2_4::Error HidlComposer::setLayerGenericMetadata(Display display, Layer layer, | 
 |                                                   const std::string& key, bool mandatory, | 
 |                                                   const std::vector<uint8_t>& value) { | 
 |     using Error = V2_4::Error; | 
 |     if (!mClient_2_4) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |     mWriter.selectDisplay(display); | 
 |     mWriter.selectLayer(layer); | 
 |     mWriter.setLayerGenericMetadata(key, mandatory, value); | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | V2_4::Error HidlComposer::getLayerGenericMetadataKeys( | 
 |         std::vector<IComposerClient::LayerGenericMetadataKey>* outKeys) { | 
 |     using Error = V2_4::Error; | 
 |     if (!mClient_2_4) { | 
 |         return Error::UNSUPPORTED; | 
 |     } | 
 |     Error error = kDefaultError_2_4; | 
 |     mClient_2_4->getLayerGenericMetadataKeys([&](const auto& tmpError, const auto& tmpKeys) { | 
 |         error = tmpError; | 
 |         if (error != Error::NONE) { | 
 |             return; | 
 |         } | 
 |  | 
 |         *outKeys = tmpKeys; | 
 |     }); | 
 |     return error; | 
 | } | 
 |  | 
 | Error HidlComposer::setBootDisplayConfig(Display /*displayId*/, Config) { | 
 |     return Error::UNSUPPORTED; | 
 | } | 
 |  | 
 | Error HidlComposer::clearBootDisplayConfig(Display /*displayId*/) { | 
 |     return Error::UNSUPPORTED; | 
 | } | 
 |  | 
 | Error HidlComposer::getPreferredBootDisplayConfig(Display /*displayId*/, Config*) { | 
 |     return Error::UNSUPPORTED; | 
 | } | 
 |  | 
 | Error HidlComposer::getClientTargetProperty( | 
 |         Display display, ClientTargetPropertyWithBrightness* outClientTargetProperty) { | 
 |     IComposerClient::ClientTargetProperty property; | 
 |     mReader.takeClientTargetProperty(display, &property); | 
 |     outClientTargetProperty->display = display; | 
 |     outClientTargetProperty->clientTargetProperty.dataspace = | 
 |             static_cast<::aidl::android::hardware::graphics::common::Dataspace>(property.dataspace); | 
 |     outClientTargetProperty->clientTargetProperty.pixelFormat = | 
 |             static_cast<::aidl::android::hardware::graphics::common::PixelFormat>( | 
 |                     property.pixelFormat); | 
 |     outClientTargetProperty->brightness = 1.f; | 
 |     outClientTargetProperty->dimmingStage = DimmingStage::NONE; | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerBrightness(Display, Layer, float) { | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::setLayerBlockingRegion(Display, Layer, | 
 |                                            const std::vector<IComposerClient::Rect>&) { | 
 |     return Error::NONE; | 
 | } | 
 |  | 
 | Error HidlComposer::getDisplayDecorationSupport( | 
 |         Display, | 
 |         std::optional<aidl::android::hardware::graphics::common::DisplayDecorationSupport>* | 
 |                 support) { | 
 |     support->reset(); | 
 |     return Error::UNSUPPORTED; | 
 | } | 
 |  | 
 | Error HidlComposer::setIdleTimerEnabled(Display, std::chrono::milliseconds) { | 
 |     LOG_ALWAYS_FATAL("setIdleTimerEnabled should have never been called on this as " | 
 |                      "OptionalFeature::KernelIdleTimer is not supported on HIDL"); | 
 | } | 
 |  | 
 | Error HidlComposer::getPhysicalDisplayOrientation(Display, AidlTransform*) { | 
 |     LOG_ALWAYS_FATAL("getPhysicalDisplayOrientation should have never been called on this as " | 
 |                      "OptionalFeature::PhysicalDisplayOrientation is not supported on HIDL"); | 
 | } | 
 |  | 
 | void HidlComposer::registerCallback(ComposerCallback& callback) { | 
 |     const bool vsyncSwitchingSupported = | 
 |             isSupported(Hwc2::Composer::OptionalFeature::RefreshRateSwitching); | 
 |  | 
 |     registerCallback(sp<ComposerCallbackBridge>::make(callback, vsyncSwitchingSupported)); | 
 | } | 
 |  | 
 | void HidlComposer::onHotplugConnect(Display) {} | 
 | void HidlComposer::onHotplugDisconnect(Display) {} | 
 |  | 
 | CommandReader::~CommandReader() { | 
 |     resetData(); | 
 | } | 
 |  | 
 | Error CommandReader::parse() { | 
 |     resetData(); | 
 |  | 
 |     IComposerClient::Command command; | 
 |     uint16_t length = 0; | 
 |  | 
 |     while (!isEmpty()) { | 
 |         if (!beginCommand(&command, &length)) { | 
 |             break; | 
 |         } | 
 |  | 
 |         bool parsed = false; | 
 |         switch (command) { | 
 |             case IComposerClient::Command::SELECT_DISPLAY: | 
 |                 parsed = parseSelectDisplay(length); | 
 |                 break; | 
 |             case IComposerClient::Command::SET_ERROR: | 
 |                 parsed = parseSetError(length); | 
 |                 break; | 
 |             case IComposerClient::Command::SET_CHANGED_COMPOSITION_TYPES: | 
 |                 parsed = parseSetChangedCompositionTypes(length); | 
 |                 break; | 
 |             case IComposerClient::Command::SET_DISPLAY_REQUESTS: | 
 |                 parsed = parseSetDisplayRequests(length); | 
 |                 break; | 
 |             case IComposerClient::Command::SET_PRESENT_FENCE: | 
 |                 parsed = parseSetPresentFence(length); | 
 |                 break; | 
 |             case IComposerClient::Command::SET_RELEASE_FENCES: | 
 |                 parsed = parseSetReleaseFences(length); | 
 |                 break; | 
 |             case IComposerClient::Command ::SET_PRESENT_OR_VALIDATE_DISPLAY_RESULT: | 
 |                 parsed = parseSetPresentOrValidateDisplayResult(length); | 
 |                 break; | 
 |             case IComposerClient::Command::SET_CLIENT_TARGET_PROPERTY: | 
 |                 parsed = parseSetClientTargetProperty(length); | 
 |                 break; | 
 |             default: | 
 |                 parsed = false; | 
 |                 break; | 
 |         } | 
 |  | 
 |         endCommand(); | 
 |  | 
 |         if (!parsed) { | 
 |             ALOGE("failed to parse command 0x%x length %" PRIu16, command, length); | 
 |             break; | 
 |         } | 
 |     } | 
 |  | 
 |     return isEmpty() ? Error::NONE : Error::NO_RESOURCES; | 
 | } | 
 |  | 
 | bool CommandReader::parseSelectDisplay(uint16_t length) { | 
 |     if (length != CommandWriterBase::kSelectDisplayLength) { | 
 |         return false; | 
 |     } | 
 |  | 
 |     mCurrentReturnData = &mReturnData[read64()]; | 
 |  | 
 |     return true; | 
 | } | 
 |  | 
 | bool CommandReader::parseSetError(uint16_t length) { | 
 |     if (length != CommandWriterBase::kSetErrorLength) { | 
 |         return false; | 
 |     } | 
 |  | 
 |     auto location = read(); | 
 |     auto error = static_cast<Error>(readSigned()); | 
 |  | 
 |     mErrors.emplace_back(CommandError{location, error}); | 
 |  | 
 |     return true; | 
 | } | 
 |  | 
 | bool CommandReader::parseSetChangedCompositionTypes(uint16_t length) { | 
 |     // (layer id, composition type) pairs | 
 |     if (length % 3 != 0 || !mCurrentReturnData) { | 
 |         return false; | 
 |     } | 
 |  | 
 |     uint32_t count = length / 3; | 
 |     mCurrentReturnData->changedLayers.reserve(count); | 
 |     mCurrentReturnData->compositionTypes.reserve(count); | 
 |     while (count > 0) { | 
 |         auto layer = read64(); | 
 |         auto type = static_cast<aidl::android::hardware::graphics::composer3::Composition>( | 
 |                 readSigned()); | 
 |  | 
 |         mCurrentReturnData->changedLayers.push_back(layer); | 
 |         mCurrentReturnData->compositionTypes.push_back(type); | 
 |  | 
 |         count--; | 
 |     } | 
 |  | 
 |     return true; | 
 | } | 
 |  | 
 | bool CommandReader::parseSetDisplayRequests(uint16_t length) { | 
 |     // display requests followed by (layer id, layer requests) pairs | 
 |     if (length % 3 != 1 || !mCurrentReturnData) { | 
 |         return false; | 
 |     } | 
 |  | 
 |     mCurrentReturnData->displayRequests = read(); | 
 |  | 
 |     uint32_t count = (length - 1) / 3; | 
 |     mCurrentReturnData->requestedLayers.reserve(count); | 
 |     mCurrentReturnData->requestMasks.reserve(count); | 
 |     while (count > 0) { | 
 |         auto layer = read64(); | 
 |         auto layerRequestMask = read(); | 
 |  | 
 |         mCurrentReturnData->requestedLayers.push_back(layer); | 
 |         mCurrentReturnData->requestMasks.push_back(layerRequestMask); | 
 |  | 
 |         count--; | 
 |     } | 
 |  | 
 |     return true; | 
 | } | 
 |  | 
 | bool CommandReader::parseSetPresentFence(uint16_t length) { | 
 |     if (length != CommandWriterBase::kSetPresentFenceLength || !mCurrentReturnData) { | 
 |         return false; | 
 |     } | 
 |  | 
 |     if (mCurrentReturnData->presentFence >= 0) { | 
 |         close(mCurrentReturnData->presentFence); | 
 |     } | 
 |     mCurrentReturnData->presentFence = readFence(); | 
 |  | 
 |     return true; | 
 | } | 
 |  | 
 | bool CommandReader::parseSetReleaseFences(uint16_t length) { | 
 |     // (layer id, release fence index) pairs | 
 |     if (length % 3 != 0 || !mCurrentReturnData) { | 
 |         return false; | 
 |     } | 
 |  | 
 |     uint32_t count = length / 3; | 
 |     mCurrentReturnData->releasedLayers.reserve(count); | 
 |     mCurrentReturnData->releaseFences.reserve(count); | 
 |     while (count > 0) { | 
 |         auto layer = read64(); | 
 |         auto fence = readFence(); | 
 |  | 
 |         mCurrentReturnData->releasedLayers.push_back(layer); | 
 |         mCurrentReturnData->releaseFences.push_back(fence); | 
 |  | 
 |         count--; | 
 |     } | 
 |  | 
 |     return true; | 
 | } | 
 |  | 
 | bool CommandReader::parseSetPresentOrValidateDisplayResult(uint16_t length) { | 
 |     if (length != CommandWriterBase::kPresentOrValidateDisplayResultLength || !mCurrentReturnData) { | 
 |         return false; | 
 |     } | 
 |     mCurrentReturnData->presentOrValidateState = read(); | 
 |     return true; | 
 | } | 
 |  | 
 | bool CommandReader::parseSetClientTargetProperty(uint16_t length) { | 
 |     if (length != CommandWriterBase::kSetClientTargetPropertyLength || !mCurrentReturnData) { | 
 |         return false; | 
 |     } | 
 |     mCurrentReturnData->clientTargetProperty.pixelFormat = static_cast<PixelFormat>(readSigned()); | 
 |     mCurrentReturnData->clientTargetProperty.dataspace = static_cast<Dataspace>(readSigned()); | 
 |     return true; | 
 | } | 
 |  | 
 | void CommandReader::resetData() { | 
 |     mErrors.clear(); | 
 |  | 
 |     for (auto& data : mReturnData) { | 
 |         if (data.second.presentFence >= 0) { | 
 |             close(data.second.presentFence); | 
 |         } | 
 |         for (auto fence : data.second.releaseFences) { | 
 |             if (fence >= 0) { | 
 |                 close(fence); | 
 |             } | 
 |         } | 
 |     } | 
 |  | 
 |     mReturnData.clear(); | 
 |     mCurrentReturnData = nullptr; | 
 | } | 
 |  | 
 | std::vector<CommandReader::CommandError> CommandReader::takeErrors() { | 
 |     return std::move(mErrors); | 
 | } | 
 |  | 
 | bool CommandReader::hasChanges(Display display, uint32_t* outNumChangedCompositionTypes, | 
 |                                uint32_t* outNumLayerRequestMasks) const { | 
 |     auto found = mReturnData.find(display); | 
 |     if (found == mReturnData.end()) { | 
 |         *outNumChangedCompositionTypes = 0; | 
 |         *outNumLayerRequestMasks = 0; | 
 |         return false; | 
 |     } | 
 |  | 
 |     const ReturnData& data = found->second; | 
 |  | 
 |     *outNumChangedCompositionTypes = data.compositionTypes.size(); | 
 |     *outNumLayerRequestMasks = data.requestMasks.size(); | 
 |  | 
 |     return !(data.compositionTypes.empty() && data.requestMasks.empty()); | 
 | } | 
 |  | 
 | void CommandReader::takeChangedCompositionTypes( | 
 |         Display display, std::vector<Layer>* outLayers, | 
 |         std::vector<aidl::android::hardware::graphics::composer3::Composition>* outTypes) { | 
 |     auto found = mReturnData.find(display); | 
 |     if (found == mReturnData.end()) { | 
 |         outLayers->clear(); | 
 |         outTypes->clear(); | 
 |         return; | 
 |     } | 
 |  | 
 |     ReturnData& data = found->second; | 
 |  | 
 |     *outLayers = std::move(data.changedLayers); | 
 |     *outTypes = std::move(data.compositionTypes); | 
 | } | 
 |  | 
 | void CommandReader::takeDisplayRequests(Display display, uint32_t* outDisplayRequestMask, | 
 |                                         std::vector<Layer>* outLayers, | 
 |                                         std::vector<uint32_t>* outLayerRequestMasks) { | 
 |     auto found = mReturnData.find(display); | 
 |     if (found == mReturnData.end()) { | 
 |         *outDisplayRequestMask = 0; | 
 |         outLayers->clear(); | 
 |         outLayerRequestMasks->clear(); | 
 |         return; | 
 |     } | 
 |  | 
 |     ReturnData& data = found->second; | 
 |  | 
 |     *outDisplayRequestMask = data.displayRequests; | 
 |     *outLayers = std::move(data.requestedLayers); | 
 |     *outLayerRequestMasks = std::move(data.requestMasks); | 
 | } | 
 |  | 
 | void CommandReader::takeReleaseFences(Display display, std::vector<Layer>* outLayers, | 
 |                                       std::vector<int>* outReleaseFences) { | 
 |     auto found = mReturnData.find(display); | 
 |     if (found == mReturnData.end()) { | 
 |         outLayers->clear(); | 
 |         outReleaseFences->clear(); | 
 |         return; | 
 |     } | 
 |  | 
 |     ReturnData& data = found->second; | 
 |  | 
 |     *outLayers = std::move(data.releasedLayers); | 
 |     *outReleaseFences = std::move(data.releaseFences); | 
 | } | 
 |  | 
 | void CommandReader::takePresentFence(Display display, int* outPresentFence) { | 
 |     auto found = mReturnData.find(display); | 
 |     if (found == mReturnData.end()) { | 
 |         *outPresentFence = -1; | 
 |         return; | 
 |     } | 
 |  | 
 |     ReturnData& data = found->second; | 
 |  | 
 |     *outPresentFence = data.presentFence; | 
 |     data.presentFence = -1; | 
 | } | 
 |  | 
 | void CommandReader::takePresentOrValidateStage(Display display, uint32_t* state) { | 
 |     auto found = mReturnData.find(display); | 
 |     if (found == mReturnData.end()) { | 
 |         *state = -1; | 
 |         return; | 
 |     } | 
 |     ReturnData& data = found->second; | 
 |     *state = data.presentOrValidateState; | 
 | } | 
 |  | 
 | void CommandReader::takeClientTargetProperty( | 
 |         Display display, IComposerClient::ClientTargetProperty* outClientTargetProperty) { | 
 |     auto found = mReturnData.find(display); | 
 |  | 
 |     // If not found, return the default values. | 
 |     if (found == mReturnData.end()) { | 
 |         outClientTargetProperty->pixelFormat = PixelFormat::RGBA_8888; | 
 |         outClientTargetProperty->dataspace = Dataspace::UNKNOWN; | 
 |         return; | 
 |     } | 
 |  | 
 |     ReturnData& data = found->second; | 
 |     *outClientTargetProperty = data.clientTargetProperty; | 
 | } | 
 |  | 
 | } // namespace Hwc2 | 
 | } // namespace android | 
 |  | 
 | // TODO(b/129481165): remove the #pragma below and fix conversion issues | 
 | #pragma clang diagnostic pop // ignored "-Wconversion" |