SF: split ComposerHal to Hidl/Aidl files

Bug: 198690444
Test: build
Change-Id: I6b39e58f53065a04b4e6bb5426ae329b25a1dadb
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
index 09734c2..d69a923 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
@@ -14,1562 +14,23 @@
  * 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 "ComposerHal.h"
+#include "AidlComposerHal.h"
+#include "HidlComposerHal.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 <algorithm>
-#include <cinttypes>
-
-namespace android {
-
-using hardware::Return;
-using hardware::hidl_vec;
-using hardware::hidl_handle;
-
-namespace Hwc2 {
+namespace android::Hwc2 {
 
 Composer::~Composer() = 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);
+std::unique_ptr<Composer> Composer::create(const std::string& serviceName) {
+    if (AidlComposer::isDeclared(serviceName)) {
+        return std::make_unique<AidlComposer>(serviceName);
     }
 
-    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);
+    return std::make_unique<HidlComposer>(serviceName);
 }
 
-Error unwrapRet(Return<Error>& ret)
-{
-    return unwrapRet(ret, kDefaultError);
-}
-
-} // anonymous namespace
-
-namespace impl {
-
-Composer::Composer(const std::string& serviceName) : 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");
-    }
-}
-
-Composer::~Composer() = default;
-
-std::vector<IComposer::Capability> Composer::getCapabilities()
-{
-    std::vector<IComposer::Capability> capabilities;
-    mComposer->getCapabilities(
-            [&](const auto& tmpCapabilities) {
-                capabilities = tmpCapabilities;
-            });
-    return capabilities;
-}
-
-std::string Composer::dumpDebugInfo()
-{
-    std::string info;
-    mComposer->dumpDebugInfo([&](const auto& tmpInfo) {
-        info = tmpInfo.c_str();
-    });
-
-    return info;
-}
-
-void Composer::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 Composer::resetCommands() {
-    mWriter.reset();
-}
-
-Error Composer::executeCommands() {
-    return execute();
-}
-
-uint32_t Composer::getMaxVirtualDisplayCount()
-{
-    auto ret = mClient->getMaxVirtualDisplayCount();
-    return unwrapRet(ret, 0);
-}
-
-Error Composer::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 Composer::destroyVirtualDisplay(Display display)
-{
-    auto ret = mClient->destroyVirtualDisplay(display);
-    return unwrapRet(ret);
-}
-
-Error Composer::acceptDisplayChanges(Display display)
-{
-    mWriter.selectDisplay(display);
-    mWriter.acceptDisplayChanges();
-    return Error::NONE;
-}
-
-Error Composer::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 Composer::destroyLayer(Display display, Layer layer)
-{
-    auto ret = mClient->destroyLayer(display, layer);
-    return unwrapRet(ret);
-}
-
-Error Composer::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 Composer::getChangedCompositionTypes(Display display,
-        std::vector<Layer>* outLayers,
-        std::vector<IComposerClient::Composition>* outTypes)
-{
-    mReader.takeChangedCompositionTypes(display, outLayers, outTypes);
-    return Error::NONE;
-}
-
-Error Composer::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 Composer::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 Composer::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 Composer::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 Composer::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 Composer::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 Composer::getHdrCapabilities(Display display,
-        std::vector<Hdr>* outTypes, 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& tmpTypes,
-                                                const auto& tmpMaxLuminance,
-                                                const auto& tmpMaxAverageLuminance,
-                                                const auto& tmpMinLuminance) {
-                                                error = tmpError;
-                                                if (error != Error::NONE) {
-                                                    return;
-                                                }
-
-                                                *outTypes = tmpTypes;
-                                                *outMaxLuminance = tmpMaxLuminance;
-                                                *outMaxAverageLuminance = tmpMaxAverageLuminance;
-                                                *outMinLuminance = tmpMinLuminance;
-                                            });
-    } else {
-        mClient->getHdrCapabilities(display,
-                                    [&](const auto& tmpError, const auto& tmpTypes,
-                                        const auto& tmpMaxLuminance,
-                                        const auto& tmpMaxAverageLuminance,
-                                        const auto& tmpMinLuminance) {
-                                        error = tmpError;
-                                        if (error != Error::NONE) {
-                                            return;
-                                        }
-
-                                        outTypes->clear();
-                                        for (auto type : tmpTypes) {
-                                            outTypes->push_back(static_cast<Hdr>(type));
-                                        }
-
-                                        *outMaxLuminance = tmpMaxLuminance;
-                                        *outMaxAverageLuminance = tmpMaxAverageLuminance;
-                                        *outMinLuminance = tmpMinLuminance;
-                                    });
-    }
-
-    return error;
-}
-
-Error Composer::getReleaseFences(Display display,
-        std::vector<Layer>* outLayers, std::vector<int>* outReleaseFences)
-{
-    mReader.takeReleaseFences(display, outLayers, outReleaseFences);
-    return Error::NONE;
-}
-
-Error Composer::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 Composer::setActiveConfig(Display display, Config config)
-{
-    auto ret = mClient->setActiveConfig(display, config);
-    return unwrapRet(ret);
-}
-
-Error Composer::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 Composer::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 Composer::setColorTransform(Display display, const float* matrix,
-        ColorTransform hint)
-{
-    mWriter.selectDisplay(display);
-    mWriter.setColorTransform(matrix, hint);
-    return Error::NONE;
-}
-
-Error Composer::setOutputBuffer(Display display, const native_handle_t* buffer,
-        int releaseFence)
-{
-    mWriter.selectDisplay(display);
-    mWriter.setOutputBuffer(0, buffer, dup(releaseFence));
-    return Error::NONE;
-}
-
-Error Composer::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 Composer::setVsyncEnabled(Display display, IComposerClient::Vsync enabled)
-{
-    auto ret = mClient->setVsyncEnabled(display, enabled);
-    return unwrapRet(ret);
-}
-
-Error Composer::setClientTargetSlotCount(Display display)
-{
-    const uint32_t bufferSlotCount = BufferQueue::NUM_BUFFER_SLOTS;
-    auto ret = mClient->setClientTargetSlotCount(display, bufferSlotCount);
-    return unwrapRet(ret);
-}
-
-Error Composer::validateDisplay(Display display, 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 Composer::presentOrValidateDisplay(Display display, 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 Composer::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 Composer::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 Composer::setLayerSurfaceDamage(Display display, Layer layer,
-        const std::vector<IComposerClient::Rect>& damage)
-{
-    mWriter.selectDisplay(display);
-    mWriter.selectLayer(layer);
-    mWriter.setLayerSurfaceDamage(damage);
-    return Error::NONE;
-}
-
-Error Composer::setLayerBlendMode(Display display, Layer layer,
-        IComposerClient::BlendMode mode)
-{
-    mWriter.selectDisplay(display);
-    mWriter.selectLayer(layer);
-    mWriter.setLayerBlendMode(mode);
-    return Error::NONE;
-}
-
-Error Composer::setLayerColor(Display display, Layer layer,
-        const IComposerClient::Color& color)
-{
-    mWriter.selectDisplay(display);
-    mWriter.selectLayer(layer);
-    mWriter.setLayerColor(color);
-    return Error::NONE;
-}
-
-Error Composer::setLayerCompositionType(Display display, Layer layer,
-        IComposerClient::Composition type)
-{
-    mWriter.selectDisplay(display);
-    mWriter.selectLayer(layer);
-    mWriter.setLayerCompositionType(type);
-    return Error::NONE;
-}
-
-Error Composer::setLayerDataspace(Display display, Layer layer,
-        Dataspace dataspace)
-{
-    mWriter.selectDisplay(display);
-    mWriter.selectLayer(layer);
-    mWriter.setLayerDataspace(dataspace);
-    return Error::NONE;
-}
-
-Error Composer::setLayerDisplayFrame(Display display, Layer layer,
-        const IComposerClient::Rect& frame)
-{
-    mWriter.selectDisplay(display);
-    mWriter.selectLayer(layer);
-    mWriter.setLayerDisplayFrame(frame);
-    return Error::NONE;
-}
-
-Error Composer::setLayerPlaneAlpha(Display display, Layer layer,
-        float alpha)
-{
-    mWriter.selectDisplay(display);
-    mWriter.selectLayer(layer);
-    mWriter.setLayerPlaneAlpha(alpha);
-    return Error::NONE;
-}
-
-Error Composer::setLayerSidebandStream(Display display, Layer layer,
-        const native_handle_t* stream)
-{
-    mWriter.selectDisplay(display);
-    mWriter.selectLayer(layer);
-    mWriter.setLayerSidebandStream(stream);
-    return Error::NONE;
-}
-
-Error Composer::setLayerSourceCrop(Display display, Layer layer,
-        const IComposerClient::FRect& crop)
-{
-    mWriter.selectDisplay(display);
-    mWriter.selectLayer(layer);
-    mWriter.setLayerSourceCrop(crop);
-    return Error::NONE;
-}
-
-Error Composer::setLayerTransform(Display display, Layer layer,
-        Transform transform)
-{
-    mWriter.selectDisplay(display);
-    mWriter.selectLayer(layer);
-    mWriter.setLayerTransform(transform);
-    return Error::NONE;
-}
-
-Error Composer::setLayerVisibleRegion(Display display, Layer layer,
-        const std::vector<IComposerClient::Rect>& visible)
-{
-    mWriter.selectDisplay(display);
-    mWriter.selectLayer(layer);
-    mWriter.setLayerVisibleRegion(visible);
-    return Error::NONE;
-}
-
-Error Composer::setLayerZOrder(Display display, Layer layer, uint32_t z)
-{
-    mWriter.selectDisplay(display);
-    mWriter.selectLayer(layer);
-    mWriter.setLayerZOrder(z);
-    return Error::NONE;
-}
-
-Error Composer::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 Composer::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> Composer::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 Composer::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 Composer::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 Composer::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 Composer::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 Composer::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 Composer::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 Composer::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 Composer::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 Composer::setDisplayBrightness(Display display, float brightness) {
-    if (!mClient_2_3) {
-        return Error::UNSUPPORTED;
-    }
-    return mClient_2_3->setDisplayBrightness(display, brightness);
-}
-
-// Composer HAL 2.4
-
-Error Composer::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 = 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->resize(tmpCaps.size());
-                    std::transform(tmpCaps.begin(), tmpCaps.end(), outCapabilities->begin(),
-                                   [](auto cap) { return static_cast<DisplayCapability>(cap); });
-                });
-    }
-
-    return static_cast<Error>(error);
-}
-
-V2_4::Error Composer::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 Composer::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 Composer::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 Composer::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 Composer::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 Composer::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 Composer::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 Composer::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 Composer::getClientTargetProperty(
-        Display display, IComposerClient::ClientTargetProperty* outClientTargetProperty) {
-    mReader.takeClientTargetProperty(display, outClientTargetProperty);
-    return Error::NONE;
-}
-
-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<IComposerClient::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<IComposerClient::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 impl
-} // namespace Hwc2
-} // namespace android
-
-// TODO(b/129481165): remove the #pragma below and fix conversion issues
-#pragma clang diagnostic pop // ignored "-Wconversion"
+} // namespace android::Hwc2