Revert of Add scroll perf test for protocol in chromoting

remoting/test/cyclic_frame_generator.cc

 // Copyright 2016 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/test/cyclic_frame_generator.h"
 
+#include "base/base_paths.h"
+#include "base/files/file_util.h"
+#include "base/path_service.h"
 #include "base/time/default_tick_clock.h"
-#include "remoting/test/frame_generator_util.h"
+#include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/webrtc/modules/desktop_capture/desktop_frame.h"
 #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
+#include "ui/gfx/codec/png_codec.h"
 
 namespace remoting {
 namespace test {
 
+namespace {
+
+const int kBarcodeCellWidth = 8;
+const int kBarcodeCellHeight = 8;
+const int kBarcodeBits = 10;
+const int kBarcodeBlackThreshold = 85;
+const int kBarcodeWhiteThreshold = 170;
+
+std::unique_ptr<webrtc::DesktopFrame> LoadDesktopFrameFromPng(
+    const base::FilePath& file_path) {
+  std::string file_content;
+  if (!base::ReadFileToString(file_path, &file_content))
+    LOG(FATAL) << "Failed to read " << file_path.MaybeAsASCII()
+               << ". Please run remoting/test/data/download.sh";
+  SkBitmap bitmap;
+  gfx::PNGCodec::Decode(reinterpret_cast<const uint8_t*>(file_content.data()),
+                        file_content.size(), &bitmap);
+  std::unique_ptr<webrtc::DesktopFrame> frame(new webrtc::BasicDesktopFrame(
+      webrtc::DesktopSize(bitmap.width(), bitmap.height())));
+  bitmap.copyPixelsTo(frame->data(),
+                      frame->stride() * frame->size().height(),
+                      frame->stride());
+  return frame;
+}
+
+void DrawRect(webrtc::DesktopFrame* frame,
+              webrtc::DesktopRect rect,
+              uint32_t color) {
+  for (int y = rect.top(); y < rect.bottom(); ++y) {
+    uint32_t* data = reinterpret_cast<uint32_t*>(
+        frame->data() + y * frame->stride() +
+        rect.left() * webrtc::DesktopFrame::kBytesPerPixel);
+    for (int x = 0; x < rect.width(); ++x) {
+      data[x] = color;
+    }
+  }
+}
+
+}  // namespace
+
 CyclicFrameGenerator::ChangeInfo::ChangeInfo() = default;
 CyclicFrameGenerator::ChangeInfo::ChangeInfo(ChangeType type,
                                              base::TimeTicks timestamp)
     : type(type), timestamp(timestamp) {}
 
 // static
 scoped_refptr<CyclicFrameGenerator> CyclicFrameGenerator::Create() {
+  base::FilePath test_data_path;
+  PathService::Get(base::DIR_SOURCE_ROOT, &test_data_path);
+  test_data_path = test_data_path.Append(FILE_PATH_LITERAL("remoting"));
+  test_data_path = test_data_path.Append(FILE_PATH_LITERAL("test"));
+  test_data_path = test_data_path.Append(FILE_PATH_LITERAL("data"));
+
   std::vector<std::unique_ptr<webrtc::DesktopFrame>> frames;
-  frames.push_back(LoadDesktopFrameFromPng("test_frame1.png"));
-  frames.push_back(LoadDesktopFrameFromPng("test_frame2.png"));
+  frames.push_back(
+      LoadDesktopFrameFromPng(test_data_path.AppendASCII("test_frame1.png")));
+  frames.push_back(
+      LoadDesktopFrameFromPng(test_data_path.AppendASCII("test_frame2.png")));
   return new CyclicFrameGenerator(std::move(frames));
 }
 
 CyclicFrameGenerator::CyclicFrameGenerator(
     std::vector<std::unique_ptr<webrtc::DesktopFrame>> reference_frames)
     : reference_frames_(std::move(reference_frames)),
       clock_(&default_tick_clock_),
       started_time_(clock_->NowTicks()) {
   CHECK(!reference_frames_.empty());
   screen_size_ = reference_frames_[0]->size();
@@ skipping 38 matching lines @@
     last_frame_type_ = ChangeType::FULL;
   } else if (last_cursor_state_ != cursor_state) {
     // Cursor state has changed.
     frame->mutable_updated_region()->AddRect(cursor_rect);
     last_frame_type_ = ChangeType::CURSOR;
   } else {
     // No changes.
     last_frame_type_ = ChangeType::NO_CHANGES;
   }
 
-  if (draw_barcode_)
-    DrawBarcode(frame_id, frame_id != last_frame_id_, frame.get());
+  // Render barcode.
+  if (draw_barcode_) {
+    uint32_t value = static_cast<uint32_t>(frame_id);
+    CHECK(value < (1U << kBarcodeBits));
+    for (int i = 0; i < kBarcodeBits; ++i) {
+      DrawRect(frame.get(), webrtc::DesktopRect::MakeXYWH(i * kBarcodeCellWidth,
+                                                          0, kBarcodeCellWidth,
+                                                          kBarcodeCellHeight),
+               (value & 1) ? 0xffffffff : 0xff000000);
+      value >>= 1;
+    }
+
+    if (frame_id != last_frame_id_) {
+      frame->mutable_updated_region()->AddRect(webrtc::DesktopRect::MakeXYWH(
+          0, 0, kBarcodeCellWidth * kBarcodeBits, kBarcodeCellHeight));
+    }
+  }
 
   last_reference_frame_ = reference_frame;
   last_cursor_state_ = cursor_state;
   last_frame_id_ = frame_id;
 
   return frame;
 }
 
 CyclicFrameGenerator::ChangeInfoList CyclicFrameGenerator::GetChangeList(
     webrtc::DesktopFrame* frame) {
   CHECK(draw_barcode_);
-  int frame_id = ReadBarcode(*frame);
+  int frame_id = 0;
+  for (int i = kBarcodeBits - 1; i >= 0; --i) {
+    // Sample barcode in the center of the cell for each bit.
+    int x = i * kBarcodeCellWidth + kBarcodeCellWidth / 2;
+    int y = kBarcodeCellHeight / 2;
+    uint8_t* data = (frame->data() + y * frame->stride() +
+                     x * webrtc::DesktopFrame::kBytesPerPixel);
+    int b = data[0];
+    int g = data[1];
+    int r = data[2];
+    bool bit = 0;
+    if (b > kBarcodeWhiteThreshold && g > kBarcodeWhiteThreshold &&
+        r > kBarcodeWhiteThreshold) {
+      bit = 1;
+    } else if (b < kBarcodeBlackThreshold && g < kBarcodeBlackThreshold &&
+        r < kBarcodeBlackThreshold) {
+      bit = 0;
+    } else {
+      LOG(FATAL) << "Invalid barcode.";
+    }
+    frame_id <<= 1;
+    if (bit)
+      frame_id |= 1;
+  }
+
   CHECK_GE(frame_id, last_identifier_frame_);
 
   ChangeInfoList result;
   for (int i = last_identifier_frame_ + 1; i <= frame_id; ++i) {
     ChangeType type = (i % (frame_cycle_period_ / cursor_blink_period_) == 0)
                           ? ChangeType::FULL
                           : ChangeType::CURSOR;
     base::TimeTicks timestamp =
         started_time_ + i * base::TimeDelta(cursor_blink_period_);
     result.push_back(ChangeInfo(type, timestamp));
   }
   last_identifier_frame_ = frame_id;
 
   return result;
 }
 
 }  // namespace test
 }  // namespace remoting