Add m-esr52 at 52.6.0

1 files changed, 249 insertions, 0 deletions

diff --git a/gfx/2d/unittest/TestScaling.cpp b/gfx/2d/unittest/TestScaling.cpp
new file mode 100644
index 000000000..60e1acbf0
--- /dev/null
+++ b/gfx/2d/unittest/TestScaling.cpp
@@ -0,0 +1,249 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "TestScaling.h"
+
+#include "ImageScaling.h"
+
+using namespace mozilla::gfx;
+
+TestScaling::TestScaling()
+{
+  REGISTER_TEST(TestScaling, BasicHalfScale);
+  REGISTER_TEST(TestScaling, DoubleHalfScale);
+  REGISTER_TEST(TestScaling, UnevenHalfScale);
+  REGISTER_TEST(TestScaling, OddStrideHalfScale);
+  REGISTER_TEST(TestScaling, VerticalHalfScale);
+  REGISTER_TEST(TestScaling, HorizontalHalfScale);
+  REGISTER_TEST(TestScaling, MixedHalfScale);
+}
+
+void
+TestScaling::BasicHalfScale()
+{
+  std::vector<uint8_t> data;
+  data.resize(500 * 500 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y += 2) {
+    for (int x = 0; x < 500; x += 2) {
+      pixels[y * 500 + x] = 0xff00ff00;
+      pixels[y * 500 + x + 1] = 0xff00ffff;
+      pixels[(y + 1) * 500 + x] = 0xff000000;
+      pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 500 * 4, IntSize(500, 500));
+
+  scaler.ScaleForSize(IntSize(220, 240));
+
+  VERIFY(scaler.GetSize().width == 250);
+  VERIFY(scaler.GetSize().height == 250);
+
+  pixels = (uint32_t*)scaler.GetScaledData();
+
+  for (int y = 0; y < 250; y++) {
+    for (int x = 0; x < 250; x++) {
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f7f);
+    }
+  }
+}
+
+void
+TestScaling::DoubleHalfScale()
+{
+  std::vector<uint8_t> data;
+  data.resize(500 * 500 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y += 2) {
+    for (int x = 0; x < 500; x += 2) {
+      pixels[y * 500 + x] = 0xff00ff00;
+      pixels[y * 500 + x + 1] = 0xff00ffff;
+      pixels[(y + 1) * 500 + x] = 0xff000000;
+      pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 500 * 4, IntSize(500, 500));
+
+  scaler.ScaleForSize(IntSize(120, 110));
+  VERIFY(scaler.GetSize().width == 125);
+  VERIFY(scaler.GetSize().height == 125);
+
+  pixels = (uint32_t*)scaler.GetScaledData();
+
+  for (int y = 0; y < 125; y++) {
+    for (int x = 0; x < 125; x++) {
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f7f);
+    }
+  }
+}
+
+void
+TestScaling::UnevenHalfScale()
+{
+  std::vector<uint8_t> data;
+  // Use a 16-byte aligned stride still, we test none-aligned strides
+  // separately.
+  data.resize(499 * 500 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y += 2) {
+    for (int x = 0; x < 500; x += 2) {
+      pixels[y * 500 + x] = 0xff00ff00;
+      if (x < 498) {
+        pixels[y * 500 + x + 1] = 0xff00ffff;
+      }
+      if (y < 498) {
+        pixels[(y + 1) * 500 + x] = 0xff000000;
+        if (x < 498) {
+          pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
+        }
+      }
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 500 * 4, IntSize(499, 499));
+
+  scaler.ScaleForSize(IntSize(220, 220));
+  VERIFY(scaler.GetSize().width == 249);
+  VERIFY(scaler.GetSize().height == 249);
+
+  pixels = (uint32_t*)scaler.GetScaledData();
+
+  for (int y = 0; y < 249; y++) {
+    for (int x = 0; x < 249; x++) {
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f7f);
+    }
+  }
+}
+
+void
+TestScaling::OddStrideHalfScale()
+{
+  std::vector<uint8_t> data;
+  // Use a 4-byte aligned stride to test if that doesn't cause any issues.
+  data.resize(499 * 499 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y += 2) {
+    for (int x = 0; x < 500; x += 2) {
+      pixels[y * 499 + x] = 0xff00ff00;
+      if (x < 498) {
+        pixels[y * 499 + x + 1] = 0xff00ffff;
+      }
+      if (y < 498) {
+        pixels[(y + 1) * 499 + x] = 0xff000000;
+        if (x < 498) {
+          pixels[(y + 1) * 499 + x + 1] = 0xff0000ff;
+        }
+      }
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 499 * 4, IntSize(499, 499));
+
+  scaler.ScaleForSize(IntSize(220, 220));
+  VERIFY(scaler.GetSize().width == 249);
+  VERIFY(scaler.GetSize().height == 249);
+
+  pixels = (uint32_t*)scaler.GetScaledData();
+
+  for (int y = 0; y < 249; y++) {
+    for (int x = 0; x < 249; x++) {
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f7f);
+    }
+  }
+}
+void
+TestScaling::VerticalHalfScale()
+{
+  std::vector<uint8_t> data;
+  data.resize(500 * 500 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y += 2) {
+    for (int x = 0; x < 500; x += 2) {
+      pixels[y * 500 + x] = 0xff00ff00;
+      pixels[y * 500 + x + 1] = 0xff00ffff;
+      pixels[(y + 1) * 500 + x] = 0xff000000;
+      pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 500 * 4, IntSize(500, 500));
+
+  scaler.ScaleForSize(IntSize(400, 240));
+  VERIFY(scaler.GetSize().width == 500);
+  VERIFY(scaler.GetSize().height == 250);
+
+  pixels = (uint32_t*)scaler.GetScaledData();
+
+  for (int y = 0; y < 250; y++) {
+    for (int x = 0; x < 500; x += 2) {
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f00);
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x + 1] == 0xff007fff);
+    }
+  }
+}
+
+void
+TestScaling::HorizontalHalfScale()
+{
+  std::vector<uint8_t> data;
+  data.resize(520 * 500 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y ++) {
+    for (int x = 0; x < 520; x += 8) {
+      pixels[y * 520 + x] = 0xff00ff00;
+      pixels[y * 520 + x + 1] = 0xff00ffff;
+      pixels[y * 520 + x + 2] = 0xff000000;
+      pixels[y * 520 + x + 3] = 0xff0000ff;
+      pixels[y * 520 + x + 4] = 0xffff00ff;
+      pixels[y * 520 + x + 5] = 0xff0000ff;
+      pixels[y * 520 + x + 6] = 0xffffffff;
+      pixels[y * 520 + x + 7] = 0xff0000ff;
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 520 * 4, IntSize(520, 500));
+
+  scaler.ScaleForSize(IntSize(240, 400));
+  VERIFY(scaler.GetSize().width == 260);
+  VERIFY(scaler.GetSize().height == 500);
+
+  pixels = (uint32_t*)scaler.GetScaledData();
+
+  for (int y = 0; y < 500; y++) {
+    for (int x = 0; x < 260; x += 4) {
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff00ff7f);
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x + 1] == 0xff00007f);
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x + 2] == 0xff7f00ff);
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x + 3] == 0xff7f7fff);
+    }
+  }
+}
+
+void
+TestScaling::MixedHalfScale()
+{
+  std::vector<uint8_t> data;
+  data.resize(500 * 500 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y += 2) {
+    for (int x = 0; x < 500; x += 2) {
+      pixels[y * 500 + x] = 0xff00ff00;
+      pixels[y * 500 + x + 1] = 0xff00ffff;
+      pixels[(y + 1) * 500 + x] = 0xff000000;
+      pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 500 * 4, IntSize(500, 500));
+
+  scaler.ScaleForSize(IntSize(120, 240));
+  VERIFY(scaler.GetSize().width == 125);
+  VERIFY(scaler.GetSize().height == 250);
+  scaler.ScaleForSize(IntSize(240, 120));
+  VERIFY(scaler.GetSize().width == 250);
+  VERIFY(scaler.GetSize().height == 125);
+}