Revert of Introduce components/display_compositor

content/browser/compositor/gl_helper_benchmark.cc

Index: content/browser/compositor/gl_helper_benchmark.cc
diff --git a/content/browser/compositor/gl_helper_benchmark.cc b/content/browser/compositor/gl_helper_benchmark.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ac914423d0a707cab9146e278fe7411fc44d2159
--- /dev/null
+++ b/content/browser/compositor/gl_helper_benchmark.cc
@@ -0,0 +1,247 @@
+// 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.
+
+// This file looks like a unit test, but it contains benchmarks and test
+// utilities intended for manual evaluation of the scalers in
+// gl_helper*. These tests produce output in the form of files and printouts,
+// but cannot really "fail". There is no point in making these tests part
+// of any test automation run.
+
+#include <stddef.h>
+#include <stdio.h>
+#include <cmath>
+#include <string>
+#include <vector>
+
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <GLES2/gl2extchromium.h>
+
+#include "base/at_exit.h"
+#include "base/command_line.h"
+#include "base/files/file_util.h"
+#include "base/macros.h"
+#include "base/strings/stringprintf.h"
+#include "base/time/time.h"
+#include "content/browser/compositor/gl_helper.h"
+#include "content/browser/compositor/gl_helper_scaling.h"
+#include "gpu/command_buffer/client/gl_in_process_context.h"
+#include "gpu/command_buffer/client/gles2_implementation.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "third_party/skia/include/core/SkTypes.h"
+#include "ui/gfx/codec/png_codec.h"
+#include "ui/gl/gl_surface.h"
+
+namespace content {
+
+content::GLHelper::ScalerQuality kQualities[] = {
+    content::GLHelper::SCALER_QUALITY_BEST,
+    content::GLHelper::SCALER_QUALITY_GOOD,
+    content::GLHelper::SCALER_QUALITY_FAST,
+};
+
+const char* const kQualityNames[] = {
+    "best", "good", "fast",
+};
+
+class GLHelperTest : public testing::Test {
+ protected:
+  void SetUp() override {
+    gpu::gles2::ContextCreationAttribHelper attributes;
+    attributes.alpha_size = 8;
+    attributes.depth_size = 24;
+    attributes.red_size = 8;
+    attributes.green_size = 8;
+    attributes.blue_size = 8;
+    attributes.stencil_size = 8;
+    attributes.samples = 4;
+    attributes.sample_buffers = 1;
+    attributes.bind_generates_resource = false;
+
+    context_.reset(gpu::GLInProcessContext::Create(
+        nullptr,                     /* service */
+        nullptr,                     /* surface */
+        true,                        /* offscreen */
+        gfx::kNullAcceleratedWidget, /* window */
+        gfx::Size(1, 1),             /* size */
+        nullptr,                     /* share_context */
+        attributes, gfx::PreferDiscreteGpu,
+        ::gpu::GLInProcessContextSharedMemoryLimits(),
+        nullptr, /* gpu_memory_buffer_manager */
+        nullptr /* image_factory */));
+    gl_ = context_->GetImplementation();
+    gpu::ContextSupport* support = context_->GetImplementation();
+
+    helper_.reset(new content::GLHelper(gl_, support));
+    helper_scaling_.reset(new content::GLHelperScaling(gl_, helper_.get()));
+  }
+
+  void TearDown() override {
+    helper_scaling_.reset(NULL);
+    helper_.reset(NULL);
+    context_.reset(NULL);
+  }
+
+  void LoadPngFileToSkBitmap(const base::FilePath& filename, SkBitmap* bitmap) {
+    std::string compressed;
+    base::ReadFileToString(base::MakeAbsoluteFilePath(filename), &compressed);
+    ASSERT_TRUE(compressed.size());
+    ASSERT_TRUE(gfx::PNGCodec::Decode(
+        reinterpret_cast<const unsigned char*>(compressed.data()),
+        compressed.size(), bitmap));
+  }
+
+  // Save the image to a png file. Used to create the initial test files.
+  void SaveToFile(SkBitmap* bitmap, const base::FilePath& filename) {
+    std::vector<unsigned char> compressed;
+    ASSERT_TRUE(gfx::PNGCodec::Encode(
+        static_cast<unsigned char*>(bitmap->getPixels()),
+        gfx::PNGCodec::FORMAT_BGRA,
+        gfx::Size(bitmap->width(), bitmap->height()),
+        static_cast<int>(bitmap->rowBytes()), true,
+        std::vector<gfx::PNGCodec::Comment>(), &compressed));
+    ASSERT_TRUE(compressed.size());
+    FILE* f = base::OpenFile(filename, "wb");
+    ASSERT_TRUE(f);
+    ASSERT_EQ(fwrite(&*compressed.begin(), 1, compressed.size(), f),
+              compressed.size());
+    base::CloseFile(f);
+  }
+
+  std::unique_ptr<gpu::GLInProcessContext> context_;
+  gpu::gles2::GLES2Interface* gl_;
+  std::unique_ptr<content::GLHelper> helper_;
+  std::unique_ptr<content::GLHelperScaling> helper_scaling_;
+  std::deque<GLHelperScaling::ScaleOp> x_ops_, y_ops_;
+};
+
+TEST_F(GLHelperTest, ScaleBenchmark) {
+  int output_sizes[] = {1920, 1080, 1249, 720,  // Output size on pixel
+                        256,  144};
+  int input_sizes[] = {3200, 2040, 2560, 1476,  // Pixel tab size
+                       1920, 1080, 1280, 720,  800, 480, 256, 144};
+
+  for (size_t q = 0; q < arraysize(kQualities); q++) {
+    for (size_t outsize = 0; outsize < arraysize(output_sizes); outsize += 2) {
+      for (size_t insize = 0; insize < arraysize(input_sizes); insize += 2) {
+        uint32_t src_texture;
+        gl_->GenTextures(1, &src_texture);
+        uint32_t dst_texture;
+        gl_->GenTextures(1, &dst_texture);
+        uint32_t framebuffer;
+        gl_->GenFramebuffers(1, &framebuffer);
+        const gfx::Size src_size(input_sizes[insize], input_sizes[insize + 1]);
+        const gfx::Size dst_size(output_sizes[outsize],
+                                 output_sizes[outsize + 1]);
+        SkBitmap input;
+        input.allocN32Pixels(src_size.width(), src_size.height());
+
+        SkBitmap output_pixels;
+        output_pixels.allocN32Pixels(dst_size.width(), dst_size.height());
+
+        gl_->BindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+        gl_->BindTexture(GL_TEXTURE_2D, dst_texture);
+        gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, dst_size.width(),
+                        dst_size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
+        gl_->BindTexture(GL_TEXTURE_2D, src_texture);
+        gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, src_size.width(),
+                        src_size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE,
+                        input.getPixels());
+
+        gfx::Rect src_subrect(0, 0, src_size.width(), src_size.height());
+        std::unique_ptr<content::GLHelper::ScalerInterface> scaler(
+            helper_->CreateScaler(kQualities[q], src_size, src_subrect,
+                                  dst_size, false, false));
+        // Scale once beforehand before we start measuring.
+        scaler->Scale(src_texture, dst_texture);
+        gl_->Finish();
+
+        base::TimeTicks start_time = base::TimeTicks::Now();
+        int iterations = 0;
+        base::TimeTicks end_time;
+        while (true) {
+          for (int i = 0; i < 50; i++) {
+            iterations++;
+            scaler->Scale(src_texture, dst_texture);
+            gl_->Flush();
+          }
+          gl_->Finish();
+          end_time = base::TimeTicks::Now();
+          if (iterations > 2000) {
+            break;
+          }
+          if ((end_time - start_time).InMillisecondsF() > 1000) {
+            break;
+          }
+        }
+        gl_->DeleteTextures(1, &dst_texture);
+        gl_->DeleteTextures(1, &src_texture);
+        gl_->DeleteFramebuffers(1, &framebuffer);
+
+        std::string name;
+        name = base::StringPrintf("scale_%dx%d_to_%dx%d_%s", src_size.width(),
+                                  src_size.height(), dst_size.width(),
+                                  dst_size.height(), kQualityNames[q]);
+
+        float ms = (end_time - start_time).InMillisecondsF() / iterations;
+        VLOG(0) << base::StringPrintf("*RESULT gpu_scale_time: %s=%.2f ms\n",
+                                      name.c_str(), ms);
+      }
+    }
+  }
+}
+
+// This is more of a test utility than a test.
+// Put an PNG image called "testimage.png" in your
+// current directory, then run this test. It will
+// create testoutput_Q_P.png, where Q is the scaling
+// mode and P is the scaling percentage taken from
+// the table below.
+TEST_F(GLHelperTest, DISABLED_ScaleTestImage) {
+  int percents[] = {
+      230, 180, 150, 110, 90, 70, 50, 49, 40, 20, 10,
+  };
+
+  SkBitmap input;
+  LoadPngFileToSkBitmap(base::FilePath(FILE_PATH_LITERAL("testimage.png")),
+                        &input);
+
+  uint32_t framebuffer;
+  gl_->GenFramebuffers(1, &framebuffer);
+  uint32_t src_texture;
+  gl_->GenTextures(1, &src_texture);
+  const gfx::Size src_size(input.width(), input.height());
+  gl_->BindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+  gl_->BindTexture(GL_TEXTURE_2D, src_texture);
+  gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, src_size.width(),
+                  src_size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE,
+                  input.getPixels());
+
+  for (size_t q = 0; q < arraysize(kQualities); q++) {
+    for (size_t p = 0; p < arraysize(percents); p++) {
+      const gfx::Size dst_size(input.width() * percents[p] / 100,
+                               input.height() * percents[p] / 100);
+      uint32_t dst_texture = helper_->CopyAndScaleTexture(
+          src_texture, src_size, dst_size, false, kQualities[q]);
+
+      SkBitmap output_pixels;
+      output_pixels.allocN32Pixels(dst_size.width(), dst_size.height());
+
+      helper_->ReadbackTextureSync(
+          dst_texture, gfx::Rect(0, 0, dst_size.width(), dst_size.height()),
+          static_cast<unsigned char*>(output_pixels.getPixels()),
+          kN32_SkColorType);
+      gl_->DeleteTextures(1, &dst_texture);
+      std::string filename = base::StringPrintf("testoutput_%s_%d.ppm",
+                                                kQualityNames[q], percents[p]);
+      VLOG(0) << "Writing " << filename;
+      SaveToFile(&output_pixels, base::FilePath::FromUTF8Unsafe(filename));
+    }
+  }
+  gl_->DeleteTextures(1, &src_texture);
+  gl_->DeleteFramebuffers(1, &framebuffer);
+}
+
+}  // namespace content