Add a new frame generator that cycles through randomly generated slides.

webrtc/test/frame_generator_capturer.cc

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 96 matching lines @@
       clock,
       FrameGenerator::CreateFromYuvFile(std::vector<std::string>(1, file_name),
                                         width, height, 1),
       target_fps));
   if (!capturer->Init())
     return nullptr;
 
   return capturer.release();
 }
 
+FrameGeneratorCapturer* FrameGeneratorCapturer::CreateSlideGenerator(
+    int width,
+    int height,

[erikvarga1, 2017/08/29 15:26:41]

Changed the width and height from size_t to int (like in the square generator)
to avoid type conversion warnings.

+    int frame_repeat_count,
+    int target_fps,
+    Clock* clock) {
+  std::unique_ptr<FrameGeneratorCapturer> capturer(new FrameGeneratorCapturer(
+      clock, FrameGenerator::CreateSlideGenerator(width, height,
+                                                  frame_repeat_count),
+      target_fps));
+  if (!capturer->Init())
+    return nullptr;
+
+  return capturer.release();
+}
+
 FrameGeneratorCapturer::FrameGeneratorCapturer(
     Clock* clock,
     std::unique_ptr<FrameGenerator> frame_generator,
     int target_fps)
     : clock_(clock),
       sending_(false),
       sink_(nullptr),
       sink_wants_observer_(nullptr),
       frame_generator_(std::move(frame_generator)),
       target_fps_(target_fps),
@@ skipping 107 matching lines @@
 
 int FrameGeneratorCapturer::GetCurrentConfiguredFramerate() {
   rtc::CritScope cs(&lock_);
   if (wanted_fps_ && *wanted_fps_ < target_fps_)
     return *wanted_fps_;
   return target_fps_;
 }
 
 }  // namespace test
 }  // namespace webrtc