Rename Capturer to VideoFrameCapturer.

remoting/host/video_frame_capturer_helper_unittest.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "remoting/host/video_frame_capturer_helper.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace remoting {
+
+class VideoFrameCapturerHelperTest : public testing::Test {
+ protected:
+  VideoFrameCapturerHelper capturer_helper_;
+};
+
+bool Equals(const SkRegion& region1, const SkRegion& region2) {
+  SkRegion::Iterator iter1(region1);
+  SkRegion::Iterator iter2(region2);
+  while (!iter1.done()) {
+    SkIRect rect1 = iter1.rect();
+    iter1.next();
+    if (iter2.done()) {
+      return false;
+    }
+    SkIRect rect2 = iter2.rect();
+    iter2.next();
+    if (rect1 != rect2) {
+      return false;
+    }
+  }
+  if (!iter2.done()) {
+    return false;
+  }
+  return true;
+}
+
+TEST_F(VideoFrameCapturerHelperTest, ClearInvalidRegion) {
+  SkRegion region;
+  capturer_helper_.InvalidateRegion(SkRegion(SkIRect::MakeXYWH(1, 2, 3, 4)));
+  capturer_helper_.ClearInvalidRegion();
+  capturer_helper_.SwapInvalidRegion(&region);
+  ASSERT_TRUE(region.isEmpty());
+}
+
+TEST_F(VideoFrameCapturerHelperTest, InvalidateRegion) {
+  SkRegion region;
+  capturer_helper_.SwapInvalidRegion(&region);
+  ASSERT_TRUE(Equals(SkRegion(SkIRect::MakeEmpty()), region));
+
+  capturer_helper_.InvalidateRegion(SkRegion(SkIRect::MakeXYWH(1, 2, 3, 4)));
+  region.setEmpty();
+  capturer_helper_.SwapInvalidRegion(&region);
+  ASSERT_TRUE(Equals(SkRegion(SkIRect::MakeXYWH(1, 2, 3, 4)), region));
+
+  capturer_helper_.InvalidateRegion(SkRegion(SkIRect::MakeXYWH(1, 2, 3, 4)));
+  capturer_helper_.InvalidateRegion(SkRegion(SkIRect::MakeXYWH(4, 2, 3, 4)));
+  region.setEmpty();
+  capturer_helper_.SwapInvalidRegion(&region);
+  ASSERT_TRUE(Equals(SkRegion(SkIRect::MakeXYWH(1, 2, 6, 4)), region));
+}
+
+TEST_F(VideoFrameCapturerHelperTest, InvalidateScreen) {
+  SkRegion region;
+  capturer_helper_.InvalidateScreen(SkISize::Make(12, 34));
+  capturer_helper_.SwapInvalidRegion(&region);
+  ASSERT_TRUE(Equals(SkRegion(SkIRect::MakeWH(12, 34)), region));
+}
+
+TEST_F(VideoFrameCapturerHelperTest, InvalidateFullScreen) {
+  SkRegion region;
+  capturer_helper_.set_size_most_recent(SkISize::Make(12, 34));
+  capturer_helper_.InvalidateFullScreen();
+  capturer_helper_.SwapInvalidRegion(&region);
+  ASSERT_TRUE(Equals(SkRegion(SkIRect::MakeWH(12, 34)), region));
+}
+
+TEST_F(VideoFrameCapturerHelperTest, SizeMostRecent) {
+  ASSERT_EQ(SkISize::Make(0, 0), capturer_helper_.size_most_recent());
+  capturer_helper_.set_size_most_recent(SkISize::Make(12, 34));
+  ASSERT_EQ(SkISize::Make(12, 34), capturer_helper_.size_most_recent());
+}
+
+TEST_F(VideoFrameCapturerHelperTest, SetLogGridSize) {
+  capturer_helper_.set_size_most_recent(SkISize::Make(10, 10));
+
+  SkRegion region;
+  capturer_helper_.SwapInvalidRegion(&region);
+  ASSERT_TRUE(Equals(SkRegion(SkIRect::MakeEmpty()), region));
+
+  capturer_helper_.InvalidateRegion(SkRegion(SkIRect::MakeXYWH(7, 7, 1, 1)));
+  region.setEmpty();
+  capturer_helper_.SwapInvalidRegion(&region);
+  ASSERT_TRUE(Equals(SkRegion(SkIRect::MakeXYWH(7, 7, 1, 1)), region));
+
+  capturer_helper_.SetLogGridSize(-1);
+  capturer_helper_.InvalidateRegion(SkRegion(SkIRect::MakeXYWH(7, 7, 1, 1)));
+  region.setEmpty();
+  capturer_helper_.SwapInvalidRegion(&region);
+  ASSERT_TRUE(Equals(SkRegion(SkIRect::MakeXYWH(7, 7, 1, 1)), region));
+
+  capturer_helper_.SetLogGridSize(0);
+  capturer_helper_.InvalidateRegion(SkRegion(SkIRect::MakeXYWH(7, 7, 1, 1)));
+  region.setEmpty();
+  capturer_helper_.SwapInvalidRegion(&region);
+  ASSERT_TRUE(Equals(SkRegion(SkIRect::MakeXYWH(7, 7, 1, 1)), region));
+
+  capturer_helper_.SetLogGridSize(1);
+  capturer_helper_.InvalidateRegion(SkRegion(SkIRect::MakeXYWH(7, 7, 1, 1)));
+  region.setEmpty();
+  capturer_helper_.SwapInvalidRegion(&region);
+  ASSERT_TRUE(Equals(SkRegion(SkIRect::MakeXYWH(6, 6, 2, 2)), region));
+
+  capturer_helper_.SetLogGridSize(2);
+  capturer_helper_.InvalidateRegion(SkRegion(SkIRect::MakeXYWH(7, 7, 1, 1)));
+  region.setEmpty();
+  capturer_helper_.SwapInvalidRegion(&region);
+  ASSERT_TRUE(Equals(SkRegion(SkIRect::MakeXYWH(4, 4, 4, 4)), region));
+
+  capturer_helper_.SetLogGridSize(0);
+  capturer_helper_.InvalidateRegion(SkRegion(SkIRect::MakeXYWH(7, 7, 1, 1)));
+  region.setEmpty();
+  capturer_helper_.SwapInvalidRegion(&region);
+  ASSERT_TRUE(Equals(SkRegion(SkIRect::MakeXYWH(7, 7, 1, 1)), region));
+}
+
+void TestExpandRegionToGrid(const SkRegion& region, int log_grid_size,
+                            const SkRegion& expandedRegionExpected) {
+  scoped_ptr<SkRegion> expandedRegion1(
+      VideoFrameCapturerHelper::ExpandToGrid(region, log_grid_size));
+  ASSERT_TRUE(Equals(expandedRegionExpected, *expandedRegion1));
+  scoped_ptr<SkRegion> expandedRegion2(
+      VideoFrameCapturerHelper::ExpandToGrid(*expandedRegion1, log_grid_size));
+  ASSERT_TRUE(Equals(*expandedRegion1, *expandedRegion2));
+}
+
+void TestExpandRectToGrid(int l, int t, int r, int b, int log_grid_size,
+                          int lExpanded, int tExpanded,
+                          int rExpanded, int bExpanded) {
+  TestExpandRegionToGrid(SkRegion(SkIRect::MakeLTRB(l, t, r, b)), log_grid_size,
+                         SkRegion(SkIRect::MakeLTRB(lExpanded, tExpanded,
+                                                    rExpanded, bExpanded)));
+}
+
+TEST_F(VideoFrameCapturerHelperTest, ExpandToGrid) {
+  const int LOG_GRID_SIZE = 4;
+  const int GRID_SIZE = 1 << LOG_GRID_SIZE;
+  for (int i = -2; i <= 2; i++) {
+    int x = i * GRID_SIZE;
+    for (int j = -2; j <= 2; j++) {
+      int y = j * GRID_SIZE;
+      TestExpandRectToGrid(x + 0, y + 0, x + 1, y + 1, LOG_GRID_SIZE,
+                           x + 0, y + 0, x + GRID_SIZE, y + GRID_SIZE);
+      TestExpandRectToGrid(x + 0, y + GRID_SIZE - 1, x + 1, y + GRID_SIZE,
+                           LOG_GRID_SIZE,
+                           x + 0, y + 0, x + GRID_SIZE, y + GRID_SIZE);
+      TestExpandRectToGrid(x + GRID_SIZE - 1, y + GRID_SIZE - 1,
+                           x + GRID_SIZE, y + GRID_SIZE, LOG_GRID_SIZE,
+                           x + 0, y + 0, x + GRID_SIZE, y + GRID_SIZE);
+      TestExpandRectToGrid(x + GRID_SIZE - 1, y + 0,
+                           x + GRID_SIZE, y + 1, LOG_GRID_SIZE,
+                           x + 0, y + 0, x + GRID_SIZE, y + GRID_SIZE);
+      TestExpandRectToGrid(x - 1, y + 0, x + 1, y + 1, LOG_GRID_SIZE,
+                           x - GRID_SIZE, y + 0, x + GRID_SIZE, y + GRID_SIZE);
+      TestExpandRectToGrid(x - 1, y - 1, x + 1, y + 0, LOG_GRID_SIZE,
+                           x - GRID_SIZE, y - GRID_SIZE, x + GRID_SIZE, y);
+      TestExpandRectToGrid(x + 0, y - 1, x + 1, y + 1, LOG_GRID_SIZE,
+                           x, y - GRID_SIZE, x + GRID_SIZE, y + GRID_SIZE);
+      TestExpandRectToGrid(x - 1, y - 1, x + 0, y + 1, LOG_GRID_SIZE,
+                           x - GRID_SIZE, y - GRID_SIZE, x, y + GRID_SIZE);
+
+      SkRegion region(SkIRect::MakeLTRB(x - 1, y - 1, x + 1, y + 1));
+      region.op(SkIRect::MakeLTRB(x - 1, y - 1, x + 0, y + 0),
+                SkRegion::kDifference_Op);
+      SkRegion expandedRegionExpected(SkIRect::MakeLTRB(
+          x - GRID_SIZE, y - GRID_SIZE, x + GRID_SIZE, y + GRID_SIZE));
+      expandedRegionExpected.op(
+          SkIRect::MakeLTRB(x - GRID_SIZE, y - GRID_SIZE, x + 0, y + 0),
+                            SkRegion::kDifference_Op);
+      TestExpandRegionToGrid(region, LOG_GRID_SIZE, expandedRegionExpected);
+
+      region.setRect(SkIRect::MakeLTRB(x - 1, y - 1, x + 1, y + 1));
+      region.op(SkIRect::MakeLTRB(x - 1, y + 0, x + 0, y + 1),
+                SkRegion::kDifference_Op);
+      expandedRegionExpected.setRect(SkIRect::MakeLTRB(
+          x - GRID_SIZE, y - GRID_SIZE, x + GRID_SIZE, y + GRID_SIZE));
+      expandedRegionExpected.op(
+          SkIRect::MakeLTRB(x - GRID_SIZE, y + 0, x + 0, y + GRID_SIZE),
+                            SkRegion::kDifference_Op);
+      TestExpandRegionToGrid(region, LOG_GRID_SIZE, expandedRegionExpected);
+
+      region.setRect(SkIRect::MakeLTRB(x - 1, y - 1, x + 1, y + 1));
+      region.op(SkIRect::MakeLTRB(x + 0, y + 0, x + 1, y + 1),
+                SkRegion::kDifference_Op);
+      expandedRegionExpected.setRect(SkIRect::MakeLTRB(
+          x - GRID_SIZE, y - GRID_SIZE, x + GRID_SIZE, y + GRID_SIZE));
+      expandedRegionExpected.op(
+          SkIRect::MakeLTRB(x + 0, y + 0, x + GRID_SIZE, y + GRID_SIZE),
+                            SkRegion::kDifference_Op);
+      TestExpandRegionToGrid(region, LOG_GRID_SIZE, expandedRegionExpected);
+
+      region.setRect(SkIRect::MakeLTRB(x - 1, y - 1, x + 1, y + 1));
+      region.op(SkIRect::MakeLTRB(x + 0, y - 1, x + 1, y + 0),
+                SkRegion::kDifference_Op);
+      expandedRegionExpected.setRect(SkIRect::MakeLTRB(
+          x - GRID_SIZE, y - GRID_SIZE, x + GRID_SIZE, y + GRID_SIZE));
+      expandedRegionExpected.op(
+          SkIRect::MakeLTRB(x + 0, y - GRID_SIZE, x + GRID_SIZE, y + 0),
+                            SkRegion::kDifference_Op);
+      TestExpandRegionToGrid(region, LOG_GRID_SIZE, expandedRegionExpected);
+    }
+  }
+}
+
+}  // namespace remoting