Auto pause video streams based on encoder target bitrate.

webrtc/video/video_loopback.cc

 /*
  *  Copyright (c) 2015 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 38 matching lines @@
 DEFINE_int32(target_bitrate, 800, "Stream target bitrate in kbps.");
 int TargetBitrateKbps() {
   return static_cast<int>(FLAGS_target_bitrate);
 }
 
 DEFINE_int32(max_bitrate, 800, "Call and stream max bitrate in kbps.");
 int MaxBitrateKbps() {
   return static_cast<int>(FLAGS_max_bitrate);
 }
 
+DEFINE_bool(suspend_below_min_bitrate,
+            false,
+            "Suspends video below the configured min bitrate.");
+
 DEFINE_int32(num_temporal_layers,
              1,
              "Number of temporal layers. Set to 1-4 to override.");
 int NumTemporalLayers() {
   return static_cast<int>(FLAGS_num_temporal_layers);
 }
 
 // Flags common with screenshare loopback, with equal default values.
 DEFINE_string(codec, "VP8", "Video codec to use.");
 std::string Codec() {
@@ skipping 147 matching lines @@
   pipe_config.allow_reordering = flags::FLAGS_allow_reordering;
 
   Call::Config::BitrateConfig call_bitrate_config;
   call_bitrate_config.min_bitrate_bps = flags::MinBitrateKbps() * 1000;
   call_bitrate_config.start_bitrate_bps = flags::StartBitrateKbps() * 1000;
   call_bitrate_config.max_bitrate_bps = flags::MaxBitrateKbps() * 1000;
 
   VideoQualityTest::Params params{
       {flags::Width(), flags::Height(), flags::Fps(),
        flags::MinBitrateKbps() * 1000, flags::TargetBitrateKbps() * 1000,
-       flags::MaxBitrateKbps() * 1000, flags::Codec(),
+       flags::MaxBitrateKbps() * 1000,
+       flags::FLAGS_suspend_below_min_bitrate,
+       flags::Codec(),
        flags::NumTemporalLayers(), flags::SelectedTL(),
        0,  // No min transmit bitrate.
        call_bitrate_config,
        flags::FLAGS_send_side_bwe,
        flags::FLAGS_use_fec},
       {flags::Clip()},
       {},  // Screenshare specific.
       {"video", 0.0, 0.0, flags::DurationSecs(), flags::OutputFilename(),
        flags::GraphTitle()},
       pipe_config,
@@ skipping 19 matching lines @@
 }  // namespace webrtc
 
 int main(int argc, char* argv[]) {
   ::testing::InitGoogleTest(&argc, argv);
   google::ParseCommandLineFlags(&argc, &argv, true);
   webrtc::test::InitFieldTrialsFromString(
       webrtc::flags::FLAGS_force_fieldtrials);
   webrtc::test::RunTest(webrtc::Loopback);
   return 0;
 }