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/*
* Copyright (C) 2019 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.
*/
#pragma once
#include <gui/AidlStatusUtil.h>
#include <gui/SyncScreenCaptureListener.h>
#include <private/gui/ComposerServiceAIDL.h>
#include <ui/FenceResult.h>
#include <ui/Rect.h>
#include <utils/String8.h>
#include <functional>
#include "TransactionUtils.h"
namespace android {
using gui::aidl_utils::statusTFromBinderStatus;
namespace {
// A ScreenCapture is a screenshot from SurfaceFlinger that can be used to check
// individual pixel values for testing purposes.
class ScreenCapture : public RefBase {
public:
static status_t captureDisplay(DisplayCaptureArgs& captureArgs,
ScreenCaptureResults& captureResults) {
const auto sf = ComposerServiceAIDL::getComposerService();
SurfaceComposerClient::Transaction().apply(true);
captureArgs.dataspace = ui::Dataspace::V0_SRGB;
const sp<SyncScreenCaptureListener> captureListener = sp<SyncScreenCaptureListener>::make();
binder::Status status = sf->captureDisplay(captureArgs, captureListener);
status_t err = statusTFromBinderStatus(status);
if (err != NO_ERROR) {
return err;
}
captureResults = captureListener->waitForResults();
return fenceStatus(captureResults.fenceResult);
}
static void captureScreen(std::unique_ptr<ScreenCapture>* sc) {
const auto ids = SurfaceComposerClient::getPhysicalDisplayIds();
// TODO(b/248317436): extend to cover all displays for multi-display devices
const auto display =
ids.empty() ? nullptr : SurfaceComposerClient::getPhysicalDisplayToken(ids.front());
captureScreen(sc, display);
}
static void captureScreen(std::unique_ptr<ScreenCapture>* sc, sp<IBinder> displayToken) {
DisplayCaptureArgs args;
args.displayToken = displayToken;
captureDisplay(sc, args);
}
static void captureDisplay(std::unique_ptr<ScreenCapture>* sc,
DisplayCaptureArgs& captureArgs) {
ScreenCaptureResults captureResults;
ASSERT_EQ(NO_ERROR, captureDisplay(captureArgs, captureResults));
*sc = std::make_unique<ScreenCapture>(captureResults.buffer,
captureResults.capturedHdrLayers);
}
static status_t captureLayers(LayerCaptureArgs& captureArgs,
ScreenCaptureResults& captureResults) {
const auto sf = ComposerServiceAIDL::getComposerService();
SurfaceComposerClient::Transaction().apply(true);
captureArgs.dataspace = ui::Dataspace::V0_SRGB;
const sp<SyncScreenCaptureListener> captureListener = sp<SyncScreenCaptureListener>::make();
binder::Status status = sf->captureLayers(captureArgs, captureListener);
status_t err = statusTFromBinderStatus(status);
if (err != NO_ERROR) {
return err;
}
captureResults = captureListener->waitForResults();
return fenceStatus(captureResults.fenceResult);
}
static void captureLayers(std::unique_ptr<ScreenCapture>* sc, LayerCaptureArgs& captureArgs) {
ScreenCaptureResults captureResults;
ASSERT_EQ(NO_ERROR, captureLayers(captureArgs, captureResults));
*sc = std::make_unique<ScreenCapture>(captureResults.buffer,
captureResults.capturedHdrLayers);
}
bool capturedHdrLayers() const { return mContainsHdr; }
void expectColor(const Rect& rect, const Color& color, uint8_t tolerance = 0) {
ASSERT_NE(nullptr, mOutBuffer);
ASSERT_NE(nullptr, mPixels);
ASSERT_EQ(HAL_PIXEL_FORMAT_RGBA_8888, mOutBuffer->getPixelFormat());
TransactionUtils::expectBufferColor(mOutBuffer, mPixels, rect, color, tolerance);
}
void expectBorder(const Rect& rect, const Color& color, uint8_t tolerance = 0) {
ASSERT_NE(nullptr, mOutBuffer);
ASSERT_EQ(HAL_PIXEL_FORMAT_RGBA_8888, mOutBuffer->getPixelFormat());
const bool leftBorder = rect.left > 0;
const bool topBorder = rect.top > 0;
const bool rightBorder = rect.right < int32_t(mOutBuffer->getWidth());
const bool bottomBorder = rect.bottom < int32_t(mOutBuffer->getHeight());
if (topBorder) {
Rect top(rect.left, rect.top - 1, rect.right, rect.top);
if (leftBorder) {
top.left -= 1;
}
if (rightBorder) {
top.right += 1;
}
expectColor(top, color, tolerance);
}
if (leftBorder) {
Rect left(rect.left - 1, rect.top, rect.left, rect.bottom);
expectColor(left, color, tolerance);
}
if (rightBorder) {
Rect right(rect.right, rect.top, rect.right + 1, rect.bottom);
expectColor(right, color, tolerance);
}
if (bottomBorder) {
Rect bottom(rect.left, rect.bottom, rect.right, rect.bottom + 1);
if (leftBorder) {
bottom.left -= 1;
}
if (rightBorder) {
bottom.right += 1;
}
expectColor(bottom, color, tolerance);
}
}
void expectQuadrant(const Rect& rect, const Color& topLeft, const Color& topRight,
const Color& bottomLeft, const Color& bottomRight, bool filtered = false,
uint8_t tolerance = 0) {
ASSERT_TRUE((rect.right - rect.left) % 2 == 0 && (rect.bottom - rect.top) % 2 == 0);
const int32_t centerX = rect.left + (rect.right - rect.left) / 2;
const int32_t centerY = rect.top + (rect.bottom - rect.top) / 2;
// avoid checking borders due to unspecified filtering behavior
const int32_t offsetX = filtered ? 2 : 0;
const int32_t offsetY = filtered ? 2 : 0;
expectColor(Rect(rect.left, rect.top, centerX - offsetX, centerY - offsetY), topLeft,
tolerance);
expectColor(Rect(centerX + offsetX, rect.top, rect.right, centerY - offsetY), topRight,
tolerance);
expectColor(Rect(rect.left, centerY + offsetY, centerX - offsetX, rect.bottom), bottomLeft,
tolerance);
expectColor(Rect(centerX + offsetX, centerY + offsetY, rect.right, rect.bottom),
bottomRight, tolerance);
}
void checkPixel(uint32_t x, uint32_t y, uint8_t r, uint8_t g, uint8_t b) {
ASSERT_NE(nullptr, mOutBuffer);
ASSERT_EQ(HAL_PIXEL_FORMAT_RGBA_8888, mOutBuffer->getPixelFormat());
const uint8_t* pixel = mPixels + (4 * (y * mOutBuffer->getStride() + x));
if (r != pixel[0] || g != pixel[1] || b != pixel[2]) {
String8 err(String8::format("pixel @ (%3d, %3d): "
"expected [%3d, %3d, %3d], got [%3d, %3d, %3d]",
x, y, r, g, b, pixel[0], pixel[1], pixel[2]));
EXPECT_EQ(String8(), err) << err.c_str();
}
}
Color getPixelColor(uint32_t x, uint32_t y) {
if (!mOutBuffer || mOutBuffer->getPixelFormat() != HAL_PIXEL_FORMAT_RGBA_8888) {
return {0, 0, 0, 0};
}
const uint8_t* pixel = mPixels + (4 * (y * mOutBuffer->getStride() + x));
return {pixel[0], pixel[1], pixel[2], pixel[3]};
}
void expectFGColor(uint32_t x, uint32_t y) { checkPixel(x, y, 195, 63, 63); }
void expectBGColor(uint32_t x, uint32_t y) { checkPixel(x, y, 63, 63, 195); }
void expectChildColor(uint32_t x, uint32_t y) { checkPixel(x, y, 200, 200, 200); }
void expectSize(uint32_t width, uint32_t height) {
EXPECT_EQ(width, mOutBuffer->getWidth());
EXPECT_EQ(height, mOutBuffer->getHeight());
}
explicit ScreenCapture(const sp<GraphicBuffer>& outBuffer, bool containsHdr)
: mOutBuffer(outBuffer), mContainsHdr(containsHdr) {
if (mOutBuffer) {
mOutBuffer->lock(GRALLOC_USAGE_SW_READ_OFTEN, reinterpret_cast<void**>(&mPixels));
}
}
~ScreenCapture() {
if (mOutBuffer) mOutBuffer->unlock();
}
private:
sp<GraphicBuffer> mOutBuffer;
bool mContainsHdr = mContainsHdr;
uint8_t* mPixels = nullptr;
};
} // namespace
} // namespace android
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