Break up TransactionTest helpers into util directory
Bug: 140128949
Test: build, boot, SurfaceFlinger_test
Change-Id: I10d29ae47cf29979289469832e2fcd1acefbe45f
diff --git a/services/surfaceflinger/tests/utils/ScreenshotUtils.h b/services/surfaceflinger/tests/utils/ScreenshotUtils.h
new file mode 100644
index 0000000..02e7623
--- /dev/null
+++ b/services/surfaceflinger/tests/utils/ScreenshotUtils.h
@@ -0,0 +1,167 @@
+/*
+ * 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 <ui/Rect.h>
+#include <utils/String8.h>
+#include "TransactionUtils.h"
+
+namespace android {
+
+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 void captureScreen(std::unique_ptr<ScreenCapture>* sc) {
+ captureScreen(sc, SurfaceComposerClient::getInternalDisplayToken());
+ }
+
+ static void captureScreen(std::unique_ptr<ScreenCapture>* sc, sp<IBinder> displayToken) {
+ const auto sf = ComposerService::getComposerService();
+ SurfaceComposerClient::Transaction().apply(true);
+
+ sp<GraphicBuffer> outBuffer;
+ ASSERT_EQ(NO_ERROR, sf->captureScreen(displayToken, &outBuffer, Rect(), 0, 0, false));
+ *sc = std::make_unique<ScreenCapture>(outBuffer);
+ }
+
+ static void captureLayers(std::unique_ptr<ScreenCapture>* sc, sp<IBinder>& parentHandle,
+ Rect crop = Rect::EMPTY_RECT, float frameScale = 1.0) {
+ sp<ISurfaceComposer> sf(ComposerService::getComposerService());
+ SurfaceComposerClient::Transaction().apply(true);
+
+ sp<GraphicBuffer> outBuffer;
+ ASSERT_EQ(NO_ERROR, sf->captureLayers(parentHandle, &outBuffer, crop, frameScale));
+ *sc = std::make_unique<ScreenCapture>(outBuffer);
+ }
+
+ static void captureChildLayers(std::unique_ptr<ScreenCapture>* sc, sp<IBinder>& parentHandle,
+ Rect crop = Rect::EMPTY_RECT, float frameScale = 1.0) {
+ sp<ISurfaceComposer> sf(ComposerService::getComposerService());
+ SurfaceComposerClient::Transaction().apply(true);
+
+ sp<GraphicBuffer> outBuffer;
+ ASSERT_EQ(NO_ERROR, sf->captureLayers(parentHandle, &outBuffer, crop, frameScale, true));
+ *sc = std::make_unique<ScreenCapture>(outBuffer);
+ }
+
+ static void captureChildLayersExcluding(
+ std::unique_ptr<ScreenCapture>* sc, sp<IBinder>& parentHandle,
+ std::unordered_set<sp<IBinder>, ISurfaceComposer::SpHash<IBinder>> excludeLayers) {
+ sp<ISurfaceComposer> sf(ComposerService::getComposerService());
+ SurfaceComposerClient::Transaction().apply(true);
+
+ sp<GraphicBuffer> outBuffer;
+ ASSERT_EQ(NO_ERROR,
+ sf->captureLayers(parentHandle, &outBuffer, ui::Dataspace::V0_SRGB,
+ ui::PixelFormat::RGBA_8888, Rect::EMPTY_RECT, excludeLayers,
+ 1.0f, true));
+ *sc = std::make_unique<ScreenCapture>(outBuffer);
+ }
+
+ void expectColor(const Rect& rect, const Color& color, uint8_t tolerance = 0) {
+ ASSERT_EQ(HAL_PIXEL_FORMAT_RGBA_8888, mOutBuffer->getPixelFormat());
+ expectBufferColor(mOutBuffer, mPixels, rect, color, tolerance);
+ }
+
+ void expectBorder(const Rect& rect, const Color& color, uint8_t tolerance = 0) {
+ 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_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.string();
+ }
+ }
+
+ 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); }
+
+ explicit ScreenCapture(const sp<GraphicBuffer>& outBuffer) : mOutBuffer(outBuffer) {
+ mOutBuffer->lock(GRALLOC_USAGE_SW_READ_OFTEN, reinterpret_cast<void**>(&mPixels));
+ }
+
+ ~ScreenCapture() { mOutBuffer->unlock(); }
+
+private:
+ sp<GraphicBuffer> mOutBuffer;
+ uint8_t* mPixels = nullptr;
+};
+} // namespace
+} // namespace android