graphics/composer/aidl/vts/ReadbackVts.cpp - android_hardware_interfaces - Gitiles

 /**
  * Copyright (c) 2021, 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.
  */

 #include "ReadbackVts.h"
 #include <aidl/android/hardware/graphics/common/BufferUsage.h>
 #include "RenderEngineVts.h"
 #include "renderengine/ExternalTexture.h"
 #include "renderengine/impl/ExternalTexture.h"

 using ::android::status_t;

 namespace aidl::android::hardware::graphics::composer3::vts {

 const std::vector<ColorMode> ReadbackHelper::colorModes = {ColorMode::SRGB, ColorMode::DISPLAY_P3};
 const std::vector<Dataspace> ReadbackHelper::dataspaces = {common::Dataspace::SRGB,
                                                            common::Dataspace::DISPLAY_P3};

 void TestLayer::write(ComposerClientWriter& writer) {
     ::android::status_t status = ::android::OK;
     ASSERT_EQ(::android::OK, status);

     writer.setLayerDisplayFrame(mDisplay, mLayer, mDisplayFrame);
     writer.setLayerSourceCrop(mDisplay, mLayer, mSourceCrop);
     writer.setLayerZOrder(mDisplay, mLayer, mZOrder);
     writer.setLayerSurfaceDamage(mDisplay, mLayer, mSurfaceDamage);
     writer.setLayerTransform(mDisplay, mLayer, mTransform);
     writer.setLayerPlaneAlpha(mDisplay, mLayer, mAlpha);
     writer.setLayerBlendMode(mDisplay, mLayer, mBlendMode);
     writer.setLayerBrightness(mDisplay, mLayer, mBrightness);
 }

 bool ReadbackHelper::readbackSupported(const common::PixelFormat& pixelFormat,
                                        const common::Dataspace& dataspace) {
     // TODO: add support for RGBA_1010102
     if (pixelFormat != common::PixelFormat::RGB_888 &&
         pixelFormat != common::PixelFormat::RGBA_8888) {
         return false;
     }
     if (std::find(dataspaces.begin(), dataspaces.end(), dataspace) == dataspaces.end()) {
         return false;
     }
     return true;
 }

 void ReadbackHelper::createReadbackBuffer(ReadbackBufferAttributes readbackBufferAttributes,
                                           const VtsDisplay& display,
                                           sp<GraphicBuffer>* graphicBuffer) {
     ASSERT_NE(nullptr, graphicBuffer);
     if (!readbackSupported(readbackBufferAttributes.format, readbackBufferAttributes.dataspace)) {
         *graphicBuffer = nullptr;
     }
     uint64_t usage =
             static_cast<uint64_t>(static_cast<uint64_t>(common::BufferUsage::CPU_READ_OFTEN) |
                                   static_cast<uint64_t>(common::BufferUsage::GPU_TEXTURE));

     uint32_t layerCount = 1;
     *graphicBuffer = sp<GraphicBuffer>::make(
             static_cast<uint32_t>(display.getDisplayWidth()),
             static_cast<uint32_t>(display.getDisplayHeight()),
             static_cast<::android::PixelFormat>(readbackBufferAttributes.format), layerCount, usage,
             "ReadbackBuffer");
     ASSERT_NE(nullptr, *graphicBuffer);
     ASSERT_EQ(::android::OK, (*graphicBuffer)->initCheck());
 }

 std::string ReadbackHelper::getColorModeString(ColorMode mode) {
     switch (mode) {
         case ColorMode::SRGB:
             return {"SRGB"};
         case ColorMode::DISPLAY_P3:
             return {"DISPLAY_P3"};
         default:
             return {"Unsupported color mode for readback"};
     }
 }

 std::string ReadbackHelper::getDataspaceString(common::Dataspace dataspace) {
     switch (dataspace) {
         case common::Dataspace::SRGB:
             return {"SRGB"};
         case common::Dataspace::DISPLAY_P3:
             return {"DISPLAY_P3"};
         case common::Dataspace::UNKNOWN:
             return {"UNKNOWN"};
         default:
             return {"Unsupported dataspace for readback"};
     }
 }

 Dataspace ReadbackHelper::getDataspaceForColorMode(ColorMode mode) {
     switch (mode) {
         case ColorMode::DISPLAY_P3:
             return Dataspace::DISPLAY_P3;
         case ColorMode::SRGB:
         default:
             return common::Dataspace::UNKNOWN;
     }
 }

 LayerSettings TestLayer::toRenderEngineLayerSettings() {
     LayerSettings layerSettings;

     layerSettings.alpha = ::android::half(mAlpha);
     layerSettings.disableBlending = mBlendMode == BlendMode::NONE;
     layerSettings.source.buffer.isOpaque = mBlendMode == BlendMode::NONE;
     layerSettings.geometry.boundaries = ::android::FloatRect(
             static_cast<float>(mDisplayFrame.left), static_cast<float>(mDisplayFrame.top),
             static_cast<float>(mDisplayFrame.right), static_cast<float>(mDisplayFrame.bottom));

     const ::android::mat4 translation = ::android::mat4::translate(::android::vec4(
             (static_cast<uint64_t>(mTransform) & static_cast<uint64_t>(Transform::FLIP_H)
                      ? static_cast<float>(-mDisplayFrame.right)
                      : 0.0f),
             (static_cast<uint64_t>(mTransform) & static_cast<uint64_t>(Transform::FLIP_V)
                      ? static_cast<float>(-mDisplayFrame.bottom)
                      : 0.0f),
             0.0f, 1.0f));

     const ::android::mat4 scale = ::android::mat4::scale(::android::vec4(
             static_cast<uint64_t>(mTransform) & static_cast<uint64_t>(Transform::FLIP_H) ? -1.0f
                                                                                          : 1.0f,
             static_cast<uint64_t>(mTransform) & static_cast<uint64_t>(Transform::FLIP_V) ? -1.0f
                                                                                          : 1.0f,
             1.0f, 1.0f));

     layerSettings.geometry.positionTransform = scale * translation;
     layerSettings.whitePointNits = mWhitePointNits;

     return layerSettings;
 }

 int32_t ReadbackHelper::GetBytesPerPixel(PixelFormat pixelFormat) {
     switch (pixelFormat) {
         case PixelFormat::RGBA_8888:
             return 4;
         case PixelFormat::RGB_888:
             return 3;
         default:
             return -1;
     }
 }

 void ReadbackHelper::fillBuffer(uint32_t width, uint32_t height, uint32_t stride, void* bufferData,
                                 common::PixelFormat pixelFormat,
                                 const std::vector<Color>& desiredColors) {
     ASSERT_TRUE(pixelFormat == common::PixelFormat::RGB_888 ||
                 pixelFormat == common::PixelFormat::RGBA_8888);
     int32_t bytesPerPixel = GetBytesPerPixel(pixelFormat);
     ASSERT_NE(-1, bytesPerPixel);
     for (int row = 0; row < height; row++) {
         for (int col = 0; col < width; col++) {
             int pixel = row * static_cast<int32_t>(width) + col;
             Color desiredColor = desiredColors[static_cast<size_t>(pixel)];

             int offset = (row * static_cast<int32_t>(stride) + col) * bytesPerPixel;
             uint8_t* pixelColor = (uint8_t*)bufferData + offset;
             pixelColor[0] = static_cast<uint8_t>(std::round(255.0f * desiredColor.r));
             pixelColor[1] = static_cast<uint8_t>(std::round(255.0f * desiredColor.g));
             pixelColor[2] = static_cast<uint8_t>(std::round(255.0f * desiredColor.b));

             if (bytesPerPixel == 4) {
                 pixelColor[3] = static_cast<uint8_t>(std::round(255.0f * desiredColor.a));
             }
         }
     }
 }

 void ReadbackHelper::clearColors(std::vector<Color>& colors, int32_t width, int32_t height,
                                  int32_t displayWidth) {
     for (int row = 0; row < height; row++) {
         for (int col = 0; col < width; col++) {
             int pixel = row * displayWidth + col;
             colors[static_cast<size_t>(pixel)] = BLACK;
         }
     }
 }

 void ReadbackHelper::fillColorsArea(std::vector<Color>& colors, int32_t stride, Rect area,
                                     Color desiredColor) {
     for (int row = area.top; row < area.bottom; row++) {
         for (int col = area.left; col < area.right; col++) {
             int pixel = row * stride + col;
             colors[static_cast<size_t>(pixel)] = desiredColor;
         }
     }
 }

 void ReadbackHelper::fillBufferAndGetFence(const sp<GraphicBuffer>& graphicBuffer,
                                            Color desiredColor, int* fillFence) {
     ASSERT_NE(nullptr, fillFence);
     std::vector<Color> desiredColors(
             static_cast<size_t>(graphicBuffer->getWidth() * graphicBuffer->getHeight()));
     ::android::Rect bounds = graphicBuffer->getBounds();
     fillColorsArea(desiredColors, static_cast<int32_t>(graphicBuffer->getWidth()),
                    {bounds.left, bounds.top, bounds.right, bounds.bottom}, desiredColor);
     ASSERT_NO_FATAL_FAILURE(fillBufferAndGetFence(graphicBuffer, desiredColors, fillFence));
 }

 void ReadbackHelper::fillBufferAndGetFence(const sp<GraphicBuffer>& graphicBuffer,
                                            const std::vector<Color>& desiredColors,
                                            int* fillFence) {
     ASSERT_TRUE(graphicBuffer->getPixelFormat() == ::android::PIXEL_FORMAT_RGB_888 ||
                 graphicBuffer->getPixelFormat() == ::android::PIXEL_FORMAT_RGBA_8888);
     void* bufData;
     int32_t bytesPerPixel = -1;
     int32_t bytesPerStride = -1;
     status_t status =
             graphicBuffer->lock(GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
                                 &bufData, &bytesPerPixel, &bytesPerStride);
     ASSERT_EQ(::android::OK, status);

     const uint32_t stride = (bytesPerPixel > 0 && bytesPerStride > 0)
                                     ? static_cast<uint32_t>(bytesPerStride / bytesPerPixel)
                                     : graphicBuffer->getStride();
     ReadbackHelper::fillBuffer(
             graphicBuffer->getWidth(), graphicBuffer->getHeight(), stride, bufData,
             static_cast<common::PixelFormat>(graphicBuffer->getPixelFormat()), desiredColors);
     status = graphicBuffer->unlockAsync(fillFence);
     ASSERT_EQ(::android::OK, status);
 }

 void ReadbackHelper::compareColorToBuffer(Color expectedColor,
                                           const sp<GraphicBuffer>& graphicBuffer,
                                           const ndk::ScopedFileDescriptor& fence) {
     std::vector<Color> expectedColors(
             static_cast<size_t>(graphicBuffer->getWidth() * graphicBuffer->getHeight()));
     ::android::Rect bounds = graphicBuffer->getBounds();
     fillColorsArea(expectedColors, static_cast<int32_t>(graphicBuffer->getWidth()),
                    {bounds.left, bounds.top, bounds.right, bounds.bottom}, expectedColor);
     compareColorsToBuffer(expectedColors, graphicBuffer, fence);
 }

 void ReadbackHelper::compareColorsToBuffer(const std::vector<Color>& expectedColors,
                                            const sp<GraphicBuffer>& graphicBuffer,
                                            const ndk::ScopedFileDescriptor& fence) {
     ASSERT_TRUE(graphicBuffer->getPixelFormat() == ::android::PIXEL_FORMAT_RGB_888 ||
                 graphicBuffer->getPixelFormat() == ::android::PIXEL_FORMAT_RGBA_8888);

     int bytesPerPixel = -1;
     int bytesPerStride = -1;
     void* bufData = nullptr;
     status_t status = graphicBuffer->lockAsync(GRALLOC_USAGE_SW_READ_OFTEN, &bufData,
                                                dup(fence.get()), &bytesPerPixel, &bytesPerStride);
     ASSERT_EQ(::android::OK, status);

     const uint32_t stride = (bytesPerPixel > 0 && bytesPerStride > 0)
                                     ? static_cast<uint32_t>(bytesPerStride / bytesPerPixel)
                                     : graphicBuffer->getStride();

     if (bytesPerPixel == -1) {
         bytesPerPixel = ReadbackHelper::GetBytesPerPixel(
                 static_cast<PixelFormat>(graphicBuffer->getPixelFormat()));
     }
     ASSERT_NE(-1, bytesPerPixel);
     for (int row = 0; row < graphicBuffer->getHeight(); row++) {
         for (int col = 0; col < graphicBuffer->getWidth(); col++) {
             int pixel = row * static_cast<int32_t>(graphicBuffer->getWidth()) + col;
             int offset = (row * static_cast<int32_t>(stride) + col) * bytesPerPixel;
             uint8_t* pixelColor = (uint8_t*)bufData + offset;
             const Color expectedColor = expectedColors[static_cast<size_t>(pixel)];
             ASSERT_EQ(std::round(255.0f * expectedColor.r), pixelColor[0]);
             ASSERT_EQ(std::round(255.0f * expectedColor.g), pixelColor[1]);
             ASSERT_EQ(std::round(255.0f * expectedColor.b), pixelColor[2]);
         }
     }

     status = graphicBuffer->unlock();
     ASSERT_EQ(::android::OK, status);
 }

 ReadbackBuffer::ReadbackBuffer(int64_t display, const std::shared_ptr<VtsComposerClient>& client,
                                int32_t width, int32_t height, common::PixelFormat pixelFormat)
     : mComposerClient(client) {
     mDisplay = display;
     mWidth = static_cast<uint32_t>(width);
     mHeight = static_cast<uint32_t>(height);
     mPixelFormat = pixelFormat;
     mLayerCount = 1;
     mUsage = static_cast<uint64_t>(static_cast<uint64_t>(common::BufferUsage::CPU_READ_OFTEN) |
                                    static_cast<uint64_t>(common::BufferUsage::GPU_TEXTURE));
 }

 void ReadbackBuffer::setReadbackBuffer() {
     mGraphicBuffer = sp<GraphicBuffer>::make(mWidth, mHeight,
                                              static_cast<::android::PixelFormat>(mPixelFormat),
                                              mLayerCount, mUsage, "ReadbackBuffer");
     ASSERT_NE(nullptr, mGraphicBuffer);
     ASSERT_EQ(::android::OK, mGraphicBuffer->initCheck());
     ::ndk::ScopedFileDescriptor noFence = ::ndk::ScopedFileDescriptor(-1);
     const auto& status =
             mComposerClient->setReadbackBuffer(mDisplay, mGraphicBuffer->handle, noFence);
     ASSERT_TRUE(status.isOk());
 }

 void ReadbackBuffer::checkReadbackBuffer(const std::vector<Color>& expectedColors) {
     // lock buffer for reading
     const auto& [fenceStatus, bufferFence] = mComposerClient->getReadbackBufferFence(mDisplay);
     ASSERT_TRUE(fenceStatus.isOk());
     ReadbackHelper::compareColorsToBuffer(expectedColors, mGraphicBuffer, bufferFence);
 }

 void TestColorLayer::write(ComposerClientWriter& writer) {
     TestLayer::write(writer);
     writer.setLayerCompositionType(mDisplay, mLayer, Composition::SOLID_COLOR);
     writer.setLayerColor(mDisplay, mLayer, mColor);
 }

 LayerSettings TestColorLayer::toRenderEngineLayerSettings() {
     LayerSettings layerSettings = TestLayer::toRenderEngineLayerSettings();

     layerSettings.source.solidColor = ::android::half3(mColor.r, mColor.g, mColor.b);
     layerSettings.alpha = mAlpha * mColor.a;
     return layerSettings;
 }

 TestBufferLayer::TestBufferLayer(const std::shared_ptr<VtsComposerClient>& client,
                                  TestRenderEngine& renderEngine, int64_t display, uint32_t width,
                                  uint32_t height, common::PixelFormat format,
                                  Composition composition)
     : TestLayer{client, display}, mRenderEngine(renderEngine) {
     mComposition = composition;
     mWidth = width;
     mHeight = height;
     mLayerCount = 1;
     mPixelFormat = format;
     mUsage = (static_cast<uint64_t>(common::BufferUsage::CPU_READ_OFTEN) |
               static_cast<uint64_t>(common::BufferUsage::CPU_WRITE_OFTEN) |
               static_cast<uint64_t>(common::BufferUsage::COMPOSER_OVERLAY) |
               static_cast<uint64_t>(common::BufferUsage::GPU_TEXTURE));

     mAccessRegion.top = 0;
     mAccessRegion.left = 0;
     mAccessRegion.right = static_cast<int32_t>(width);
     mAccessRegion.bottom = static_cast<int32_t>(height);

     setSourceCrop({0, 0, (float)width, (float)height});
 }

 void TestBufferLayer::write(ComposerClientWriter& writer) {
     TestLayer::write(writer);
     writer.setLayerCompositionType(mDisplay, mLayer, mComposition);
     writer.setLayerVisibleRegion(mDisplay, mLayer, std::vector<Rect>(1, mDisplayFrame));
     if (mGraphicBuffer) {
         writer.setLayerBuffer(mDisplay, mLayer, /*slot*/ 0, mGraphicBuffer->handle, mFillFence);
     }
 }

 LayerSettings TestBufferLayer::toRenderEngineLayerSettings() {
     LayerSettings layerSettings = TestLayer::toRenderEngineLayerSettings();
     layerSettings.source.buffer.buffer =
             std::make_shared<::android::renderengine::impl::ExternalTexture>(
                     mGraphicBuffer, mRenderEngine.getInternalRenderEngine(),
                     ::android::renderengine::impl::ExternalTexture::Usage::READABLE);

     layerSettings.source.buffer.usePremultipliedAlpha = mBlendMode == BlendMode::PREMULTIPLIED;

     const float scaleX = (mSourceCrop.right - mSourceCrop.left) / (static_cast<float>(mWidth));
     const float scaleY = (mSourceCrop.bottom - mSourceCrop.top) / (static_cast<float>(mHeight));
     const float translateX = mSourceCrop.left / (static_cast<float>(mWidth));
     const float translateY = mSourceCrop.top / (static_cast<float>(mHeight));

     layerSettings.source.buffer.textureTransform =
             ::android::mat4::translate(::android::vec4(translateX, translateY, 0.0f, 1.0f)) *
             ::android::mat4::scale(::android::vec4(scaleX, scaleY, 1.0f, 1.0f));

     return layerSettings;
 }

 void TestBufferLayer::fillBuffer(std::vector<Color>& expectedColors) {
     void* bufData;
     int32_t bytesPerPixel = -1;
     int32_t bytesPerStride = -1;
     auto status = mGraphicBuffer->lock(mUsage, &bufData, &bytesPerPixel, &bytesPerStride);
     const uint32_t stride = (bytesPerPixel > 0 && bytesPerStride > 0)
                                     ? static_cast<uint32_t>(bytesPerStride / bytesPerPixel)
                                     : mGraphicBuffer->getStride();
     ASSERT_EQ(::android::OK, status);
     ReadbackHelper::fillBuffer(mWidth, mHeight, stride, bufData, mPixelFormat, expectedColors);

     const auto unlockStatus = mGraphicBuffer->unlockAsync(&mFillFence);
     ASSERT_EQ(::android::OK, unlockStatus);
 }

 void TestBufferLayer::setBuffer(std::vector<Color> colors) {
     mGraphicBuffer = allocateBuffer();
     ASSERT_NE(nullptr, mGraphicBuffer);
     ASSERT_EQ(::android::OK, mGraphicBuffer->initCheck());
     fillBuffer(colors);
 }

 sp<GraphicBuffer> TestBufferLayer::allocateBuffer() {
     return sp<GraphicBuffer>::make(mWidth, mHeight,
                                    static_cast<::android::PixelFormat>(mPixelFormat), mLayerCount,
                                    mUsage, "TestBufferLayer");
 }

 void TestBufferLayer::setDataspace(common::Dataspace dataspace, ComposerClientWriter& writer) {
     writer.setLayerDataspace(mDisplay, mLayer, dataspace);
 }

 void TestBufferLayer::setToClientComposition(ComposerClientWriter& writer) {
     writer.setLayerCompositionType(mDisplay, mLayer, Composition::CLIENT);
 }

 }  // namespace aidl::android::hardware::graphics::composer3::vts
	/**
	* Copyright (c) 2021, 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.
	*/

	#include "ReadbackVts.h"
	#include <aidl/android/hardware/graphics/common/BufferUsage.h>
	#include "RenderEngineVts.h"
	#include "renderengine/ExternalTexture.h"
	#include "renderengine/impl/ExternalTexture.h"

	using ::android::status_t;

	namespace aidl::android::hardware::graphics::composer3::vts {

	const std::vector<ColorMode> ReadbackHelper::colorModes = {ColorMode::SRGB, ColorMode::DISPLAY_P3};
	const std::vector<Dataspace> ReadbackHelper::dataspaces = {common::Dataspace::SRGB,
	common::Dataspace::DISPLAY_P3};

	void TestLayer::write(ComposerClientWriter& writer) {
	::android::status_t status = ::android::OK;
	ASSERT_EQ(::android::OK, status);

	writer.setLayerDisplayFrame(mDisplay, mLayer, mDisplayFrame);
	writer.setLayerSourceCrop(mDisplay, mLayer, mSourceCrop);
	writer.setLayerZOrder(mDisplay, mLayer, mZOrder);
	writer.setLayerSurfaceDamage(mDisplay, mLayer, mSurfaceDamage);
	writer.setLayerTransform(mDisplay, mLayer, mTransform);
	writer.setLayerPlaneAlpha(mDisplay, mLayer, mAlpha);
	writer.setLayerBlendMode(mDisplay, mLayer, mBlendMode);
	writer.setLayerBrightness(mDisplay, mLayer, mBrightness);
	}

	bool ReadbackHelper::readbackSupported(const common::PixelFormat& pixelFormat,
	const common::Dataspace& dataspace) {
	// TODO: add support for RGBA_1010102
	if (pixelFormat != common::PixelFormat::RGB_888 &&
	pixelFormat != common::PixelFormat::RGBA_8888) {
	return false;
	}
	if (std::find(dataspaces.begin(), dataspaces.end(), dataspace) == dataspaces.end()) {
	return false;
	}
	return true;
	}

	void ReadbackHelper::createReadbackBuffer(ReadbackBufferAttributes readbackBufferAttributes,
	const VtsDisplay& display,
	sp<GraphicBuffer>* graphicBuffer) {
	ASSERT_NE(nullptr, graphicBuffer);
	if (!readbackSupported(readbackBufferAttributes.format, readbackBufferAttributes.dataspace)) {
	*graphicBuffer = nullptr;
	}
	uint64_t usage =
	static_cast<uint64_t>(static_cast<uint64_t>(common::BufferUsage::CPU_READ_OFTEN) \|
	static_cast<uint64_t>(common::BufferUsage::GPU_TEXTURE));

	uint32_t layerCount = 1;
	*graphicBuffer = sp<GraphicBuffer>::make(
	static_cast<uint32_t>(display.getDisplayWidth()),
	static_cast<uint32_t>(display.getDisplayHeight()),
	static_cast<::android::PixelFormat>(readbackBufferAttributes.format), layerCount, usage,
	"ReadbackBuffer");
	ASSERT_NE(nullptr, *graphicBuffer);
	ASSERT_EQ(::android::OK, (*graphicBuffer)->initCheck());
	}

	std::string ReadbackHelper::getColorModeString(ColorMode mode) {
	switch (mode) {
	case ColorMode::SRGB:
	return {"SRGB"};
	case ColorMode::DISPLAY_P3:
	return {"DISPLAY_P3"};
	default:
	return {"Unsupported color mode for readback"};
	}
	}

	std::string ReadbackHelper::getDataspaceString(common::Dataspace dataspace) {
	switch (dataspace) {
	case common::Dataspace::SRGB:
	return {"SRGB"};
	case common::Dataspace::DISPLAY_P3:
	return {"DISPLAY_P3"};
	case common::Dataspace::UNKNOWN:
	return {"UNKNOWN"};
	default:
	return {"Unsupported dataspace for readback"};
	}
	}

	Dataspace ReadbackHelper::getDataspaceForColorMode(ColorMode mode) {
	switch (mode) {
	case ColorMode::DISPLAY_P3:
	return Dataspace::DISPLAY_P3;
	case ColorMode::SRGB:
	default:
	return common::Dataspace::UNKNOWN;
	}
	}

	LayerSettings TestLayer::toRenderEngineLayerSettings() {
	LayerSettings layerSettings;

	layerSettings.alpha = ::android::half(mAlpha);
	layerSettings.disableBlending = mBlendMode == BlendMode::NONE;
	layerSettings.source.buffer.isOpaque = mBlendMode == BlendMode::NONE;
	layerSettings.geometry.boundaries = ::android::FloatRect(
	static_cast<float>(mDisplayFrame.left), static_cast<float>(mDisplayFrame.top),
	static_cast<float>(mDisplayFrame.right), static_cast<float>(mDisplayFrame.bottom));

	const ::android::mat4 translation = ::android::mat4::translate(::android::vec4(
	(static_cast<uint64_t>(mTransform) & static_cast<uint64_t>(Transform::FLIP_H)
	? static_cast<float>(-mDisplayFrame.right)
	: 0.0f),
	(static_cast<uint64_t>(mTransform) & static_cast<uint64_t>(Transform::FLIP_V)
	? static_cast<float>(-mDisplayFrame.bottom)
	: 0.0f),
	0.0f, 1.0f));

	const ::android::mat4 scale = ::android::mat4::scale(::android::vec4(
	static_cast<uint64_t>(mTransform) & static_cast<uint64_t>(Transform::FLIP_H) ? -1.0f
	: 1.0f,
	static_cast<uint64_t>(mTransform) & static_cast<uint64_t>(Transform::FLIP_V) ? -1.0f
	: 1.0f,
	1.0f, 1.0f));

	layerSettings.geometry.positionTransform = scale * translation;
	layerSettings.whitePointNits = mWhitePointNits;

	return layerSettings;
	}

	int32_t ReadbackHelper::GetBytesPerPixel(PixelFormat pixelFormat) {
	switch (pixelFormat) {
	case PixelFormat::RGBA_8888:
	return 4;
	case PixelFormat::RGB_888:
	return 3;
	default:
	return -1;
	}
	}

	void ReadbackHelper::fillBuffer(uint32_t width, uint32_t height, uint32_t stride, void* bufferData,
	common::PixelFormat pixelFormat,
	const std::vector<Color>& desiredColors) {
	ASSERT_TRUE(pixelFormat == common::PixelFormat::RGB_888 \|\|
	pixelFormat == common::PixelFormat::RGBA_8888);
	int32_t bytesPerPixel = GetBytesPerPixel(pixelFormat);
	ASSERT_NE(-1, bytesPerPixel);
	for (int row = 0; row < height; row++) {
	for (int col = 0; col < width; col++) {
	int pixel = row * static_cast<int32_t>(width) + col;
	Color desiredColor = desiredColors[static_cast<size_t>(pixel)];

	int offset = (row * static_cast<int32_t>(stride) + col) * bytesPerPixel;
	uint8_t* pixelColor = (uint8_t*)bufferData + offset;
	pixelColor[0] = static_cast<uint8_t>(std::round(255.0f * desiredColor.r));
	pixelColor[1] = static_cast<uint8_t>(std::round(255.0f * desiredColor.g));
	pixelColor[2] = static_cast<uint8_t>(std::round(255.0f * desiredColor.b));

	if (bytesPerPixel == 4) {
	pixelColor[3] = static_cast<uint8_t>(std::round(255.0f * desiredColor.a));
	}
	}
	}
	}

	void ReadbackHelper::clearColors(std::vector<Color>& colors, int32_t width, int32_t height,
	int32_t displayWidth) {
	for (int row = 0; row < height; row++) {
	for (int col = 0; col < width; col++) {
	int pixel = row * displayWidth + col;
	colors[static_cast<size_t>(pixel)] = BLACK;
	}
	}
	}

	void ReadbackHelper::fillColorsArea(std::vector<Color>& colors, int32_t stride, Rect area,
	Color desiredColor) {
	for (int row = area.top; row < area.bottom; row++) {
	for (int col = area.left; col < area.right; col++) {
	int pixel = row * stride + col;
	colors[static_cast<size_t>(pixel)] = desiredColor;
	}
	}
	}

	void ReadbackHelper::fillBufferAndGetFence(const sp<GraphicBuffer>& graphicBuffer,
	Color desiredColor, int* fillFence) {
	ASSERT_NE(nullptr, fillFence);
	std::vector<Color> desiredColors(
	static_cast<size_t>(graphicBuffer->getWidth() * graphicBuffer->getHeight()));
	::android::Rect bounds = graphicBuffer->getBounds();
	fillColorsArea(desiredColors, static_cast<int32_t>(graphicBuffer->getWidth()),
	{bounds.left, bounds.top, bounds.right, bounds.bottom}, desiredColor);
	ASSERT_NO_FATAL_FAILURE(fillBufferAndGetFence(graphicBuffer, desiredColors, fillFence));
	}

	void ReadbackHelper::fillBufferAndGetFence(const sp<GraphicBuffer>& graphicBuffer,
	const std::vector<Color>& desiredColors,
	int* fillFence) {
	ASSERT_TRUE(graphicBuffer->getPixelFormat() == ::android::PIXEL_FORMAT_RGB_888 \|\|
	graphicBuffer->getPixelFormat() == ::android::PIXEL_FORMAT_RGBA_8888);
	void* bufData;
	int32_t bytesPerPixel = -1;
	int32_t bytesPerStride = -1;
	status_t status =
	graphicBuffer->lock(GRALLOC_USAGE_SW_READ_OFTEN \| GRALLOC_USAGE_SW_WRITE_OFTEN,
	&bufData, &bytesPerPixel, &bytesPerStride);
	ASSERT_EQ(::android::OK, status);

	const uint32_t stride = (bytesPerPixel > 0 && bytesPerStride > 0)
	? static_cast<uint32_t>(bytesPerStride / bytesPerPixel)
	: graphicBuffer->getStride();
	ReadbackHelper::fillBuffer(
	graphicBuffer->getWidth(), graphicBuffer->getHeight(), stride, bufData,
	static_cast<common::PixelFormat>(graphicBuffer->getPixelFormat()), desiredColors);
	status = graphicBuffer->unlockAsync(fillFence);
	ASSERT_EQ(::android::OK, status);
	}

	void ReadbackHelper::compareColorToBuffer(Color expectedColor,
	const sp<GraphicBuffer>& graphicBuffer,
	const ndk::ScopedFileDescriptor& fence) {
	std::vector<Color> expectedColors(
	static_cast<size_t>(graphicBuffer->getWidth() * graphicBuffer->getHeight()));
	::android::Rect bounds = graphicBuffer->getBounds();
	fillColorsArea(expectedColors, static_cast<int32_t>(graphicBuffer->getWidth()),
	{bounds.left, bounds.top, bounds.right, bounds.bottom}, expectedColor);
	compareColorsToBuffer(expectedColors, graphicBuffer, fence);
	}

	void ReadbackHelper::compareColorsToBuffer(const std::vector<Color>& expectedColors,
	const sp<GraphicBuffer>& graphicBuffer,
	const ndk::ScopedFileDescriptor& fence) {
	ASSERT_TRUE(graphicBuffer->getPixelFormat() == ::android::PIXEL_FORMAT_RGB_888 \|\|
	graphicBuffer->getPixelFormat() == ::android::PIXEL_FORMAT_RGBA_8888);

	int bytesPerPixel = -1;
	int bytesPerStride = -1;
	void* bufData = nullptr;
	status_t status = graphicBuffer->lockAsync(GRALLOC_USAGE_SW_READ_OFTEN, &bufData,
	dup(fence.get()), &bytesPerPixel, &bytesPerStride);
	ASSERT_EQ(::android::OK, status);

	const uint32_t stride = (bytesPerPixel > 0 && bytesPerStride > 0)
	? static_cast<uint32_t>(bytesPerStride / bytesPerPixel)
	: graphicBuffer->getStride();

	if (bytesPerPixel == -1) {
	bytesPerPixel = ReadbackHelper::GetBytesPerPixel(
	static_cast<PixelFormat>(graphicBuffer->getPixelFormat()));
	}
	ASSERT_NE(-1, bytesPerPixel);
	for (int row = 0; row < graphicBuffer->getHeight(); row++) {
	for (int col = 0; col < graphicBuffer->getWidth(); col++) {
	int pixel = row * static_cast<int32_t>(graphicBuffer->getWidth()) + col;
	int offset = (row * static_cast<int32_t>(stride) + col) * bytesPerPixel;
	uint8_t* pixelColor = (uint8_t*)bufData + offset;
	const Color expectedColor = expectedColors[static_cast<size_t>(pixel)];
	ASSERT_EQ(std::round(255.0f * expectedColor.r), pixelColor[0]);
	ASSERT_EQ(std::round(255.0f * expectedColor.g), pixelColor[1]);
	ASSERT_EQ(std::round(255.0f * expectedColor.b), pixelColor[2]);
	}
	}

	status = graphicBuffer->unlock();
	ASSERT_EQ(::android::OK, status);
	}

	ReadbackBuffer::ReadbackBuffer(int64_t display, const std::shared_ptr<VtsComposerClient>& client,
	int32_t width, int32_t height, common::PixelFormat pixelFormat)
	: mComposerClient(client) {
	mDisplay = display;
	mWidth = static_cast<uint32_t>(width);
	mHeight = static_cast<uint32_t>(height);
	mPixelFormat = pixelFormat;
	mLayerCount = 1;
	mUsage = static_cast<uint64_t>(static_cast<uint64_t>(common::BufferUsage::CPU_READ_OFTEN) \|
	static_cast<uint64_t>(common::BufferUsage::GPU_TEXTURE));
	}

	void ReadbackBuffer::setReadbackBuffer() {
	mGraphicBuffer = sp<GraphicBuffer>::make(mWidth, mHeight,
	static_cast<::android::PixelFormat>(mPixelFormat),
	mLayerCount, mUsage, "ReadbackBuffer");
	ASSERT_NE(nullptr, mGraphicBuffer);
	ASSERT_EQ(::android::OK, mGraphicBuffer->initCheck());
	::ndk::ScopedFileDescriptor noFence = ::ndk::ScopedFileDescriptor(-1);
	const auto& status =
	mComposerClient->setReadbackBuffer(mDisplay, mGraphicBuffer->handle, noFence);
	ASSERT_TRUE(status.isOk());
	}

	void ReadbackBuffer::checkReadbackBuffer(const std::vector<Color>& expectedColors) {
	// lock buffer for reading
	const auto& [fenceStatus, bufferFence] = mComposerClient->getReadbackBufferFence(mDisplay);
	ASSERT_TRUE(fenceStatus.isOk());
	ReadbackHelper::compareColorsToBuffer(expectedColors, mGraphicBuffer, bufferFence);
	}

	void TestColorLayer::write(ComposerClientWriter& writer) {
	TestLayer::write(writer);
	writer.setLayerCompositionType(mDisplay, mLayer, Composition::SOLID_COLOR);
	writer.setLayerColor(mDisplay, mLayer, mColor);
	}

	LayerSettings TestColorLayer::toRenderEngineLayerSettings() {
	LayerSettings layerSettings = TestLayer::toRenderEngineLayerSettings();

	layerSettings.source.solidColor = ::android::half3(mColor.r, mColor.g, mColor.b);
	layerSettings.alpha = mAlpha * mColor.a;
	return layerSettings;
	}

	TestBufferLayer::TestBufferLayer(const std::shared_ptr<VtsComposerClient>& client,
	TestRenderEngine& renderEngine, int64_t display, uint32_t width,
	uint32_t height, common::PixelFormat format,
	Composition composition)
	: TestLayer{client, display}, mRenderEngine(renderEngine) {
	mComposition = composition;
	mWidth = width;
	mHeight = height;
	mLayerCount = 1;
	mPixelFormat = format;
	mUsage = (static_cast<uint64_t>(common::BufferUsage::CPU_READ_OFTEN) \|
	static_cast<uint64_t>(common::BufferUsage::CPU_WRITE_OFTEN) \|
	static_cast<uint64_t>(common::BufferUsage::COMPOSER_OVERLAY) \|
	static_cast<uint64_t>(common::BufferUsage::GPU_TEXTURE));

	mAccessRegion.top = 0;
	mAccessRegion.left = 0;
	mAccessRegion.right = static_cast<int32_t>(width);
	mAccessRegion.bottom = static_cast<int32_t>(height);

	setSourceCrop({0, 0, (float)width, (float)height});
	}

	void TestBufferLayer::write(ComposerClientWriter& writer) {
	TestLayer::write(writer);
	writer.setLayerCompositionType(mDisplay, mLayer, mComposition);
	writer.setLayerVisibleRegion(mDisplay, mLayer, std::vector<Rect>(1, mDisplayFrame));
	if (mGraphicBuffer) {
	writer.setLayerBuffer(mDisplay, mLayer, /slot/ 0, mGraphicBuffer->handle, mFillFence);
	}
	}

	LayerSettings TestBufferLayer::toRenderEngineLayerSettings() {
	LayerSettings layerSettings = TestLayer::toRenderEngineLayerSettings();
	layerSettings.source.buffer.buffer =
	std::make_shared<::android::renderengine::impl::ExternalTexture>(
	mGraphicBuffer, mRenderEngine.getInternalRenderEngine(),
	::android::renderengine::impl::ExternalTexture::Usage::READABLE);

	layerSettings.source.buffer.usePremultipliedAlpha = mBlendMode == BlendMode::PREMULTIPLIED;

	const float scaleX = (mSourceCrop.right - mSourceCrop.left) / (static_cast<float>(mWidth));
	const float scaleY = (mSourceCrop.bottom - mSourceCrop.top) / (static_cast<float>(mHeight));
	const float translateX = mSourceCrop.left / (static_cast<float>(mWidth));
	const float translateY = mSourceCrop.top / (static_cast<float>(mHeight));

	layerSettings.source.buffer.textureTransform =
	::android::mat4::translate(::android::vec4(translateX, translateY, 0.0f, 1.0f)) *
	::android::mat4::scale(::android::vec4(scaleX, scaleY, 1.0f, 1.0f));

	return layerSettings;
	}

	void TestBufferLayer::fillBuffer(std::vector<Color>& expectedColors) {
	void* bufData;
	int32_t bytesPerPixel = -1;
	int32_t bytesPerStride = -1;
	auto status = mGraphicBuffer->lock(mUsage, &bufData, &bytesPerPixel, &bytesPerStride);
	const uint32_t stride = (bytesPerPixel > 0 && bytesPerStride > 0)
	? static_cast<uint32_t>(bytesPerStride / bytesPerPixel)
	: mGraphicBuffer->getStride();
	ASSERT_EQ(::android::OK, status);
	ReadbackHelper::fillBuffer(mWidth, mHeight, stride, bufData, mPixelFormat, expectedColors);

	const auto unlockStatus = mGraphicBuffer->unlockAsync(&mFillFence);
	ASSERT_EQ(::android::OK, unlockStatus);
	}

	void TestBufferLayer::setBuffer(std::vector<Color> colors) {
	mGraphicBuffer = allocateBuffer();
	ASSERT_NE(nullptr, mGraphicBuffer);
	ASSERT_EQ(::android::OK, mGraphicBuffer->initCheck());
	fillBuffer(colors);
	}

	sp<GraphicBuffer> TestBufferLayer::allocateBuffer() {
	return sp<GraphicBuffer>::make(mWidth, mHeight,
	static_cast<::android::PixelFormat>(mPixelFormat), mLayerCount,
	mUsage, "TestBufferLayer");
	}

	void TestBufferLayer::setDataspace(common::Dataspace dataspace, ComposerClientWriter& writer) {
	writer.setLayerDataspace(mDisplay, mLayer, dataspace);
	}

	void TestBufferLayer::setToClientComposition(ComposerClientWriter& writer) {
	writer.setLayerCompositionType(mDisplay, mLayer, Composition::CLIENT);
	}

	} // namespace aidl::android::hardware::graphics::composer3::vts