Implement timestamp translation/filter in VideoCapturer.

webrtc/media/base/videocapturer_unittest.cc

 /*
  *  Copyright (c) 2008 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 <stdio.h>
 
 #include <memory>
 #include <vector>
 
 #include "webrtc/base/gunit.h"
 #include "webrtc/base/logging.h"
+#include "webrtc/base/random.h"
 #include "webrtc/base/thread.h"
 #include "webrtc/media/base/fakevideocapturer.h"
 #include "webrtc/media/base/fakevideorenderer.h"
 #include "webrtc/media/base/testutils.h"
 #include "webrtc/media/base/videocapturer.h"
 
 using cricket::FakeVideoCapturer;
 
 namespace {
 
@@ skipping 20 matching lines @@
                                          &VideoCapturerTest::OnStateChange);
     capturer_->AddOrUpdateSink(&renderer_, rtc::VideoSinkWants());
   }
   void InitScreencast() { InitCapturer(true); }
 
   void OnStateChange(cricket::VideoCapturer*,
                      cricket::CaptureState capture_state) {
     capture_state_ = capture_state;
     ++num_state_changes_;
   }
+
   cricket::CaptureState capture_state() { return capture_state_; }
   int num_state_changes() { return num_state_changes_; }
 
   std::unique_ptr<cricket::FakeVideoCapturer> capturer_;
   cricket::CaptureState capture_state_;
   int num_state_changes_;
   cricket::FakeVideoRenderer renderer_;
   bool expects_rotation_applied_;
 };
 
@@ skipping 706 matching lines @@
   capturer_->set_enable_camera_list(true);
   capturer_->ConstrainSupportedFormats(vga_format);
   EXPECT_EQ(2u, capturer_->GetSupportedFormats()->size());
   // To make sure it's not just the camera list being broken, add in VGA and
   // try again. This time, only the VGA format should be there.
   supported_formats.push_back(vga_format);
   capturer_->ResetSupportedFormats(supported_formats);
   ASSERT_EQ(1u, capturer_->GetSupportedFormats()->size());
   EXPECT_EQ(vga_format.height, capturer_->GetSupportedFormats()->at(0).height);
 }