Revert of Split IncomingVideoStream into two implementations, with smoothing and without.

webrtc/common_video/incoming_video_stream_unittest.cc

-/*
- *  Copyright (c) 2016 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.
- */
-
-#include "testing/gtest/include/gtest/gtest.h"
-#include "webrtc/base/event.h"
-#include "webrtc/common_video/include/incoming_video_stream.h"
-#include "webrtc/media/base/videosinkinterface.h"
-#include "webrtc/video_frame.h"
-
-namespace webrtc {
-
-// Basic test that checks if the no-smoothing implementation delivers a frame.
-TEST(IncomingVideoStreamTest, NoSmoothingOneFrame) {
-  class TestCallback : public rtc::VideoSinkInterface<VideoFrame> {
-   public:
-    TestCallback() : event_(false, false) {}
-    ~TestCallback() override {}
-
-    bool WaitForFrame(int milliseconds) { return event_.Wait(milliseconds); }
-
-   private:
-    void OnFrame(const VideoFrame& frame) override {
-      event_.Set();
-    }
-
-    rtc::Event event_;
-  } callback;
-  IncomingVideoStreamNoSmoothing stream(&callback);
-
-  rtc::VideoSinkInterface<VideoFrame>* stream_sink = &stream;
-  stream_sink->OnFrame(VideoFrame());
-
-  EXPECT_TRUE(callback.WaitForFrame(500));
-}
-
-// Tests that if the renderer is too slow, that frames will be dropped and
-// the "producer thread" (main test thread), will not be blocked from delivering
-// frames.
-TEST(IncomingVideoStreamTest, NoSmoothingTooManyFrames) {
-  class TestCallback : public rtc::VideoSinkInterface<VideoFrame> {
-   public:
-    TestCallback() : event_(false, false) {}
-    ~TestCallback() override {}
-
-    void Continue() { event_.Set(); }
-    int frame_count() const { return frame_count_; }
-
-   private:
-    void OnFrame(const VideoFrame& frame) override {
-      ++frame_count_;
-      if (frame_count_ == 1) {
-        // Block delivery of frames until we're allowed to continue.
-        event_.Wait(rtc::Event::kForever);
-      }
-    }
-
-    rtc::Event event_;
-    int frame_count_ = 0;
-  } callback;
-
-  {
-    IncomingVideoStreamNoSmoothing stream(&callback);
-
-    rtc::VideoSinkInterface<VideoFrame>* stream_sink = &stream;
-    for (int i = 0; i < 100; ++i)
-      stream_sink->OnFrame(VideoFrame());
-    // We need to set the 'continue' event before |stream| goes out of scope
-    // since we're currently blocking the queue (i.e. stream can't be deleted).
-    callback.Continue();
-  }
-
-  // Once |stream| has been deleted, we're guaranteed that no more calls to
-  // the OnFrame callback will be made, so we can safely check the frame count
-  // without having to worry about synchronization.
-
-  // In practice frame_count will be ~1.
-  EXPECT_LT(callback.frame_count(), 100);
-  EXPECT_GE(callback.frame_count(), 1);
-}
-
-}  // namespace webrtc