1 files changed, 94 insertions, 0 deletions
diff --git a/base/gfx/img_resize_perftest.cc b/base/gfx/img_resize_perftest.cc
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+++ b/base/gfx/img_resize_perftest.cc
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <stdlib.h>
+#include <time.h>
+
+#include "base/perftimer.h"
+#include "base/gfx/convolver.h"
+#include "base/gfx/image_operations.h"
+#include "base/gfx/image_resizer.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+void FillRandomData(char* dest, int byte_count) {
+  srand(static_cast<unsigned>(time(NULL)));
+  for (int i = 0; i < byte_count; i++)
+    dest[i] = rand() * 255 / RAND_MAX;
+}
+
+}  // namespace
+
+// Old code gives [1521, 1519]ms for this, 4000x4000 -> 2100x2100 lanczos8
+
+TEST(ImageResizePerf, BigFilter) {
+  static const int kSrcWidth = 4000;
+  static const int kSrcHeight = 4000;
+  static const int kSrcByteSize = kSrcWidth * kSrcHeight * 4;
+
+  SkBitmap src_bmp;
+  src_bmp.setConfig(SkBitmap::kARGB_8888_Config, kSrcWidth, kSrcHeight);
+  src_bmp.allocPixels();
+  FillRandomData(reinterpret_cast<char*>(src_bmp.getAddr32(0, 0)),
+                 kSrcByteSize);
+
+  // Make the dest size > 1/2 so the 50% optimization doesn't kick in.
+  static const int kDestWidth = 1400;
+  static const int kDestHeight = 1400;
+
+  PerfTimeLogger resize_timer("resize");
+  gfx::ImageResizer resizer(gfx::ImageResizer::LANCZOS3);
+  SkBitmap dest = resizer.Resize(src_bmp, kDestWidth, kDestHeight);
+}
+
+// The original image filter we were using took 523ms for this test, while this
+// one takes 857ms.
+// TODO(brettw) make this at least 64% faster.
+TEST(ImageOperationPerf, BigFilter) {
+  static const int kSrcWidth = 4000;
+  static const int kSrcHeight = 4000;
+  static const int kSrcByteSize = kSrcWidth * kSrcHeight * 4;
+
+  SkBitmap src_bmp;
+  src_bmp.setConfig(SkBitmap::kARGB_8888_Config, kSrcWidth, kSrcHeight);
+  src_bmp.allocPixels();
+  src_bmp.setIsOpaque(true);
+  FillRandomData(reinterpret_cast<char*>(src_bmp.getAddr32(0, 0)),
+                 kSrcByteSize);
+
+  // Make the dest size > 1/2 so the 50% optimization doesn't kick in.
+  static const int kDestWidth = 1400;
+  static const int kDestHeight = 1400;
+
+  PerfTimeLogger resize_timer("resize");
+  SkBitmap dest = gfx::ImageOperations::Resize(src_bmp,
+      gfx::ImageOperations::RESIZE_LANCZOS3, (float)kDestWidth / (float)kSrcWidth,
+      (float)kDestHeight / (float)kSrcHeight);
+}