talk/session/media/channelmanager_unittest.cc

/*
 * libjingle
 * Copyright 2008 Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "talk/media/base/fakecapturemanager.h"
#include "talk/media/base/fakemediaengine.h"
#include "talk/media/base/fakemediaprocessor.h"
#include "talk/media/base/testutils.h"
#include "talk/media/devices/fakedevicemanager.h"
#include "webrtc/p2p/base/fakesession.h"
#include "talk/session/media/channelmanager.h"
#include "webrtc/base/gunit.h"
#include "webrtc/base/logging.h"
#include "webrtc/base/thread.h"

namespace cricket {

static const AudioCodec kAudioCodecs[] = {
  AudioCodec(97, "voice", 1, 2, 3, 0),
  AudioCodec(111, "OPUS", 48000, 32000, 2, 0),
};

static const VideoCodec kVideoCodecs[] = {
  VideoCodec(99, "H264", 100, 200, 300, 0),
  VideoCodec(100, "VP8", 100, 200, 300, 0),
  VideoCodec(96, "rtx", 100, 200, 300, 0),
};

class ChannelManagerTest : public testing::Test {
 protected:
  ChannelManagerTest() : fme_(NULL), fdm_(NULL), fcm_(NULL), cm_(NULL) {
  }

  virtual void SetUp() {
    fme_ = new cricket::FakeMediaEngine();
    fme_->SetAudioCodecs(MAKE_VECTOR(kAudioCodecs));
    fme_->SetVideoCodecs(MAKE_VECTOR(kVideoCodecs));
    fdme_ = new cricket::FakeDataEngine();
    fdm_ = new cricket::FakeDeviceManager();
    fcm_ = new cricket::FakeCaptureManager();
    cm_ = new cricket::ChannelManager(
        fme_, fdme_, fdm_, fcm_, rtc::Thread::Current());
    session_ = new cricket::FakeSession(true);

    std::vector<std::string> in_device_list, out_device_list, vid_device_list;
    in_device_list.push_back("audio-in1");
    in_device_list.push_back("audio-in2");
    out_device_list.push_back("audio-out1");
    out_device_list.push_back("audio-out2");
    vid_device_list.push_back("video-in1");
    vid_device_list.push_back("video-in2");
    fdm_->SetAudioInputDevices(in_device_list);
    fdm_->SetAudioOutputDevices(out_device_list);
    fdm_->SetVideoCaptureDevices(vid_device_list);
  }

  virtual void TearDown() {
    delete session_;
    delete cm_;
    cm_ = NULL;
    fdm_ = NULL;
    fcm_ = NULL;
    fdme_ = NULL;
    fme_ = NULL;
  }

  rtc::Thread worker_;
  cricket::FakeMediaEngine* fme_;
  cricket::FakeDataEngine* fdme_;
  cricket::FakeDeviceManager* fdm_;
  cricket::FakeCaptureManager* fcm_;
  cricket::ChannelManager* cm_;
  cricket::FakeSession* session_;
};

// Test that we startup/shutdown properly.
TEST_F(ChannelManagerTest, StartupShutdown) {
  EXPECT_FALSE(cm_->initialized());
  EXPECT_EQ(rtc::Thread::Current(), cm_->worker_thread());
  EXPECT_TRUE(cm_->Init());
  EXPECT_TRUE(cm_->initialized());
  cm_->Terminate();
  EXPECT_FALSE(cm_->initialized());
}

// Test that we startup/shutdown properly with a worker thread.
TEST_F(ChannelManagerTest, StartupShutdownOnThread) {
  worker_.Start();
  EXPECT_FALSE(cm_->initialized());
  EXPECT_EQ(rtc::Thread::Current(), cm_->worker_thread());
  EXPECT_TRUE(cm_->set_worker_thread(&worker_));
  EXPECT_EQ(&worker_, cm_->worker_thread());
  EXPECT_TRUE(cm_->Init());
  EXPECT_TRUE(cm_->initialized());
  // Setting the worker thread while initialized should fail.
  EXPECT_FALSE(cm_->set_worker_thread(rtc::Thread::Current()));
  cm_->Terminate();
  EXPECT_FALSE(cm_->initialized());
}

// Test that we can create and destroy a voice and video channel.
TEST_F(ChannelManagerTest, CreateDestroyChannels) {
  EXPECT_TRUE(cm_->Init());
  cricket::VoiceChannel* voice_channel = cm_->CreateVoiceChannel(
      session_, cricket::CN_AUDIO, false);
  EXPECT_TRUE(voice_channel != NULL);
  cricket::VideoChannel* video_channel = cm_->CreateVideoChannel(
      session_, cricket::CN_VIDEO, false, VideoOptions(), voice_channel);
  EXPECT_TRUE(video_channel != NULL);
  cricket::DataChannel* data_channel =
      cm_->CreateDataChannel(session_, cricket::CN_DATA,
                             false, cricket::DCT_RTP);
  EXPECT_TRUE(data_channel != NULL);
  cm_->DestroyVideoChannel(video_channel);
  cm_->DestroyVoiceChannel(voice_channel, nullptr);
  cm_->DestroyDataChannel(data_channel);
  cm_->Terminate();
}

// Test that we can create and destroy a voice and video channel with a worker.
TEST_F(ChannelManagerTest, CreateDestroyChannelsOnThread) {
  worker_.Start();
  EXPECT_TRUE(cm_->set_worker_thread(&worker_));
  EXPECT_TRUE(cm_->Init());
  delete session_;
  session_ = new cricket::FakeSession(&worker_, true);
  cricket::VoiceChannel* voice_channel = cm_->CreateVoiceChannel(
      session_, cricket::CN_AUDIO, false);
  EXPECT_TRUE(voice_channel != NULL);
  cricket::VideoChannel* video_channel = cm_->CreateVideoChannel(
      session_, cricket::CN_VIDEO, false, VideoOptions(), voice_channel);
  EXPECT_TRUE(video_channel != NULL);
  cricket::DataChannel* data_channel =
      cm_->CreateDataChannel(session_, cricket::CN_DATA,
                             false, cricket::DCT_RTP);
  EXPECT_TRUE(data_channel != NULL);
  cm_->DestroyVideoChannel(video_channel);
  cm_->DestroyVoiceChannel(voice_channel, nullptr);
  cm_->DestroyDataChannel(data_channel);
  cm_->Terminate();
}

// Test that we fail to create a voice/video channel if the session is unable
// to create a cricket::TransportChannel
TEST_F(ChannelManagerTest, NoTransportChannelTest) {
  EXPECT_TRUE(cm_->Init());
  session_->set_fail_channel_creation(true);
  // The test is useless unless the session does not fail creating
  // cricket::TransportChannel.
  ASSERT_TRUE(session_->CreateChannel(
      "audio", cricket::ICE_CANDIDATE_COMPONENT_RTP) == NULL);

  cricket::VoiceChannel* voice_channel = cm_->CreateVoiceChannel(
      session_, cricket::CN_AUDIO, false);
  EXPECT_TRUE(voice_channel == NULL);
  cricket::VideoChannel* video_channel = cm_->CreateVideoChannel(
      session_, cricket::CN_VIDEO, false, VideoOptions(), voice_channel);
  EXPECT_TRUE(video_channel == NULL);
  cricket::DataChannel* data_channel =
      cm_->CreateDataChannel(session_, cricket::CN_DATA,
                             false, cricket::DCT_RTP);
  EXPECT_TRUE(data_channel == NULL);
  cm_->Terminate();
}

// Test that SetDefaultVideoCodec passes through the right values.
TEST_F(ChannelManagerTest, SetDefaultVideoEncoderConfig) {
  cricket::VideoCodec codec(96, "G264", 1280, 720, 60, 0);
  cricket::VideoEncoderConfig config(codec, 1, 2);
  EXPECT_TRUE(cm_->Init());
  EXPECT_TRUE(cm_->SetDefaultVideoEncoderConfig(config));
  EXPECT_EQ(config, fme_->default_video_encoder_config());
}

struct GetCapturerFrameSize : public sigslot::has_slots<> {
  void OnVideoFrame(VideoCapturer* capturer, const VideoFrame* frame) {
    width = frame->GetWidth();
    height = frame->GetHeight();
  }
  GetCapturerFrameSize(VideoCapturer* capturer) : width(0), height(0) {
    capturer->SignalVideoFrame.connect(this,
                                       &GetCapturerFrameSize::OnVideoFrame);
    static_cast<FakeVideoCapturer*>(capturer)->CaptureFrame();
  }
  size_t width;
  size_t height;
};

TEST_F(ChannelManagerTest, DefaultCapturerAspectRatio) {
  VideoCodec codec(100, "VP8", 640, 360, 30, 0);
  VideoFormat format(640, 360, 33, FOURCC_ANY);
  VideoEncoderConfig config(codec, 1, 2);
  EXPECT_TRUE(cm_->Init());
  // A capturer created before the default encoder config is set will have no
  // set aspect ratio, so it'll be 4:3 (based on the fake video capture impl).
  VideoCapturer* capturer = cm_->CreateVideoCapturer();
  ASSERT_TRUE(capturer != NULL);
  EXPECT_EQ(CS_RUNNING, capturer->Start(format));
  GetCapturerFrameSize size(capturer);
  EXPECT_EQ(640u, size.width);
  EXPECT_EQ(480u, size.height);
  delete capturer;
  // Try again, but with the encoder config set to 16:9.
  EXPECT_TRUE(cm_->SetDefaultVideoEncoderConfig(config));
  capturer = cm_->CreateVideoCapturer();
  ASSERT_TRUE(capturer != NULL);
  EXPECT_EQ(CS_RUNNING, capturer->Start(format));
  GetCapturerFrameSize cropped_size(capturer);
  EXPECT_EQ(640u, cropped_size.width);
  EXPECT_EQ(360u, cropped_size.height);
  delete capturer;
}

// Test that SetDefaultVideoCodec passes through the right values.
TEST_F(ChannelManagerTest, SetDefaultVideoCodecBeforeInit) {
  cricket::VideoCodec codec(96, "G264", 1280, 720, 60, 0);
  cricket::VideoEncoderConfig config(codec, 1, 2);
  EXPECT_TRUE(cm_->SetDefaultVideoEncoderConfig(config));
  EXPECT_TRUE(cm_->Init());
  EXPECT_EQ(config, fme_->default_video_encoder_config());
}

TEST_F(ChannelManagerTest, SetAudioOptionsBeforeInit) {
  // Test that values that we set before Init are applied.
  AudioOptions options;
  options.auto_gain_control.Set(true);
  options.echo_cancellation.Set(false);
  EXPECT_TRUE(cm_->SetAudioOptions("audio-in1", "audio-out1", options));
  std::string audio_in, audio_out;
  AudioOptions set_options;
  // Check options before Init.
  EXPECT_TRUE(cm_->GetAudioOptions(&audio_in, &audio_out, &set_options));
  EXPECT_EQ("audio-in1", audio_in);
  EXPECT_EQ("audio-out1", audio_out);
  EXPECT_EQ(options, set_options);
  EXPECT_TRUE(cm_->Init());
  // Check options after Init.
  EXPECT_TRUE(cm_->GetAudioOptions(&audio_in, &audio_out, &set_options));
  EXPECT_EQ("audio-in1", audio_in);
  EXPECT_EQ("audio-out1", audio_out);
  EXPECT_EQ(options, set_options);
  // At this point, the media engine should also be initialized.
  EXPECT_EQ(options, fme_->audio_options());
  EXPECT_EQ(cricket::kDefaultAudioDelayOffset,
            fme_->audio_delay_offset());
}

TEST_F(ChannelManagerTest, GetAudioOptionsWithNullParameters) {
  std::string audio_in, audio_out;
  AudioOptions options;
  options.echo_cancellation.Set(true);
  EXPECT_TRUE(cm_->SetAudioOptions("audio-in2", "audio-out2", options));
  EXPECT_TRUE(cm_->GetAudioOptions(&audio_in, NULL, NULL));
  EXPECT_EQ("audio-in2", audio_in);
  EXPECT_TRUE(cm_->GetAudioOptions(NULL, &audio_out, NULL));
  EXPECT_EQ("audio-out2", audio_out);
  AudioOptions out_options;
  EXPECT_TRUE(cm_->GetAudioOptions(NULL, NULL, &out_options));
  bool echo_cancellation = false;
  EXPECT_TRUE(out_options.echo_cancellation.Get(&echo_cancellation));
  EXPECT_TRUE(echo_cancellation);
}

TEST_F(ChannelManagerTest, SetAudioOptions) {
  // Test initial state.
  EXPECT_TRUE(cm_->Init());
  EXPECT_EQ(std::string(cricket::DeviceManagerInterface::kDefaultDeviceName),
            fme_->audio_in_device());
  EXPECT_EQ(std::string(cricket::DeviceManagerInterface::kDefaultDeviceName),
            fme_->audio_out_device());
  EXPECT_EQ(cricket::kDefaultAudioDelayOffset,
            fme_->audio_delay_offset());
  // Test setting specific values.
  AudioOptions options;
  options.auto_gain_control.Set(true);
  EXPECT_TRUE(cm_->SetAudioOptions("audio-in1", "audio-out1", options));
  EXPECT_EQ("audio-in1", fme_->audio_in_device());
  EXPECT_EQ("audio-out1", fme_->audio_out_device());
  bool auto_gain_control = false;
  EXPECT_TRUE(
      fme_->audio_options().auto_gain_control.Get(&auto_gain_control));
  EXPECT_TRUE(auto_gain_control);
  EXPECT_EQ(cricket::kDefaultAudioDelayOffset,
            fme_->audio_delay_offset());
  // Test setting bad values.
  EXPECT_FALSE(cm_->SetAudioOptions("audio-in9", "audio-out2", options));
}

TEST_F(ChannelManagerTest, SetEngineAudioOptions) {
  EXPECT_TRUE(cm_->Init());
  // Test setting specific values.
  AudioOptions options;
  options.experimental_ns.Set(true);
  EXPECT_TRUE(cm_->SetEngineAudioOptions(options));
  bool experimental_ns = false;
  EXPECT_TRUE(fme_->audio_options().experimental_ns.Get(&experimental_ns));
  EXPECT_TRUE(experimental_ns);
}

TEST_F(ChannelManagerTest, SetEngineAudioOptionsBeforeInitFails) {
  // Test that values that we set before Init are not applied.
  AudioOptions options;
  options.experimental_ns.Set(true);
  EXPECT_FALSE(cm_->SetEngineAudioOptions(options));
  EXPECT_FALSE(fme_->audio_options().experimental_ns.IsSet());
}

TEST_F(ChannelManagerTest, SetCaptureDeviceBeforeInit) {
  // Test that values that we set before Init are applied.
  EXPECT_TRUE(cm_->SetCaptureDevice("video-in2"));
  EXPECT_TRUE(cm_->Init());
  EXPECT_EQ("video-in2", cm_->video_device_name());
}

TEST_F(ChannelManagerTest, GetCaptureDeviceBeforeInit) {
  std::string video_in;
  // Test that GetCaptureDevice works before Init.
  EXPECT_TRUE(cm_->SetCaptureDevice("video-in1"));
  EXPECT_TRUE(cm_->GetCaptureDevice(&video_in));
  EXPECT_EQ("video-in1", video_in);
  // Test that options set before Init can be gotten after Init.
  EXPECT_TRUE(cm_->SetCaptureDevice("video-in2"));
  EXPECT_TRUE(cm_->Init());
  EXPECT_TRUE(cm_->GetCaptureDevice(&video_in));
  EXPECT_EQ("video-in2", video_in);
}

TEST_F(ChannelManagerTest, SetCaptureDevice) {
  // Test setting defaults.
  EXPECT_TRUE(cm_->Init());
  EXPECT_TRUE(cm_->SetCaptureDevice(""));  // will use DeviceManager default
  EXPECT_EQ("video-in1", cm_->video_device_name());
  // Test setting specific values.
  EXPECT_TRUE(cm_->SetCaptureDevice("video-in2"));
  EXPECT_EQ("video-in2", cm_->video_device_name());
  // TODO(juberti): Add test for invalid value here.
}

// Test unplugging and plugging back the preferred devices. When the preferred
// device is unplugged, we fall back to the default device. When the preferred
// device is plugged back, we use it.
TEST_F(ChannelManagerTest, SetAudioOptionsUnplugPlug) {
  // Set preferences "audio-in1" and "audio-out1" before init.
  AudioOptions options;
  EXPECT_TRUE(cm_->SetAudioOptions("audio-in1", "audio-out1", options));
  // Unplug device "audio-in1" and "audio-out1".
  std::vector<std::string> in_device_list, out_device_list;
  in_device_list.push_back("audio-in2");
  out_device_list.push_back("audio-out2");
  fdm_->SetAudioInputDevices(in_device_list);
  fdm_->SetAudioOutputDevices(out_device_list);
  // Init should fall back to default devices.
  EXPECT_TRUE(cm_->Init());
  // The media engine should use the default.
  EXPECT_EQ("", fme_->audio_in_device());
  EXPECT_EQ("", fme_->audio_out_device());
  // The channel manager keeps the preferences "audio-in1" and "audio-out1".
  std::string audio_in, audio_out;
  EXPECT_TRUE(cm_->GetAudioOptions(&audio_in, &audio_out, NULL));
  EXPECT_EQ("audio-in1", audio_in);
  EXPECT_EQ("audio-out1", audio_out);
  cm_->Terminate();

  // Plug devices "audio-in2" and "audio-out2" back.
  in_device_list.push_back("audio-in1");
  out_device_list.push_back("audio-out1");
  fdm_->SetAudioInputDevices(in_device_list);
  fdm_->SetAudioOutputDevices(out_device_list);
  // Init again. The preferences, "audio-in2" and "audio-out2", are used.
  EXPECT_TRUE(cm_->Init());
  EXPECT_EQ("audio-in1", fme_->audio_in_device());
  EXPECT_EQ("audio-out1", fme_->audio_out_device());
  EXPECT_TRUE(cm_->GetAudioOptions(&audio_in, &audio_out, NULL));
  EXPECT_EQ("audio-in1", audio_in);
  EXPECT_EQ("audio-out1", audio_out);
}

// We have one camera. Unplug it, fall back to no camera.
TEST_F(ChannelManagerTest, SetCaptureDeviceUnplugPlugOneCamera) {
  // Set preferences "video-in1" before init.
  std::vector<std::string> vid_device_list;
  vid_device_list.push_back("video-in1");
  fdm_->SetVideoCaptureDevices(vid_device_list);
  EXPECT_TRUE(cm_->SetCaptureDevice("video-in1"));

  // Unplug "video-in1".
  vid_device_list.clear();
  fdm_->SetVideoCaptureDevices(vid_device_list);

  // Init should fall back to avatar.
  EXPECT_TRUE(cm_->Init());
  // The media engine should use no camera.
  EXPECT_EQ("", cm_->video_device_name());
  // The channel manager keeps the user preference "video-in".
  std::string video_in;
  EXPECT_TRUE(cm_->GetCaptureDevice(&video_in));
  EXPECT_EQ("video-in1", video_in);
  cm_->Terminate();

  // Plug device "video-in1" back.
  vid_device_list.push_back("video-in1");
  fdm_->SetVideoCaptureDevices(vid_device_list);
  // Init again. The user preferred device, "video-in1", is used.
  EXPECT_TRUE(cm_->Init());
  EXPECT_EQ("video-in1", cm_->video_device_name());
  EXPECT_TRUE(cm_->GetCaptureDevice(&video_in));
  EXPECT_EQ("video-in1", video_in);
}

// We have multiple cameras. Unplug the preferred, fall back to another camera.
TEST_F(ChannelManagerTest, SetCaptureDeviceUnplugPlugTwoDevices) {
  // Set video device to "video-in1" before init.
  EXPECT_TRUE(cm_->SetCaptureDevice("video-in1"));
  // Unplug device "video-in1".
  std::vector<std::string> vid_device_list;
  vid_device_list.push_back("video-in2");
  fdm_->SetVideoCaptureDevices(vid_device_list);
  // Init should fall back to default device "video-in2".
  EXPECT_TRUE(cm_->Init());
  // The media engine should use the default device "video-in2".
  EXPECT_EQ("video-in2", cm_->video_device_name());
  // The channel manager keeps the user preference "video-in".
  std::string video_in;
  EXPECT_TRUE(cm_->GetCaptureDevice(&video_in));
  EXPECT_EQ("video-in1", video_in);
  cm_->Terminate();

  // Plug device "video-in1" back.
  vid_device_list.push_back("video-in1");
  fdm_->SetVideoCaptureDevices(vid_device_list);
  // Init again. The user preferred device, "video-in1", is used.
  EXPECT_TRUE(cm_->Init());
  EXPECT_EQ("video-in1", cm_->video_device_name());
  EXPECT_TRUE(cm_->GetCaptureDevice(&video_in));
  EXPECT_EQ("video-in1", video_in);
}

TEST_F(ChannelManagerTest, GetCaptureDevice) {
  std::string video_in;
  // Test setting/getting defaults.
  EXPECT_TRUE(cm_->Init());
  EXPECT_TRUE(cm_->SetCaptureDevice(""));
  EXPECT_TRUE(cm_->GetCaptureDevice(&video_in));
  EXPECT_EQ("video-in1", video_in);
  // Test setting/getting specific values.
  EXPECT_TRUE(cm_->SetCaptureDevice("video-in2"));
  EXPECT_TRUE(cm_->GetCaptureDevice(&video_in));
  EXPECT_EQ("video-in2", video_in);
}

TEST_F(ChannelManagerTest, GetSetOutputVolumeBeforeInit) {
  int level;
  // Before init, SetOutputVolume() remembers the volume but does not change the
  // volume of the engine. GetOutputVolume() should fail.
  EXPECT_EQ(-1, fme_->output_volume());
  EXPECT_FALSE(cm_->GetOutputVolume(&level));
  EXPECT_FALSE(cm_->SetOutputVolume(-1));  // Invalid volume.
  EXPECT_TRUE(cm_->SetOutputVolume(99));
  EXPECT_EQ(-1, fme_->output_volume());

  // Init() will apply the remembered volume.
  EXPECT_TRUE(cm_->Init());
  EXPECT_TRUE(cm_->GetOutputVolume(&level));
  EXPECT_EQ(99, level);
  EXPECT_EQ(level, fme_->output_volume());

  EXPECT_TRUE(cm_->SetOutputVolume(60));
  EXPECT_TRUE(cm_->GetOutputVolume(&level));
  EXPECT_EQ(60, level);
  EXPECT_EQ(level, fme_->output_volume());
}

TEST_F(ChannelManagerTest, GetSetOutputVolume) {
  int level;
  EXPECT_TRUE(cm_->Init());
  EXPECT_TRUE(cm_->GetOutputVolume(&level));
  EXPECT_EQ(level, fme_->output_volume());

  EXPECT_FALSE(cm_->SetOutputVolume(-1));  // Invalid volume.
  EXPECT_TRUE(cm_->SetOutputVolume(60));
  EXPECT_EQ(60, fme_->output_volume());
  EXPECT_TRUE(cm_->GetOutputVolume(&level));
  EXPECT_EQ(60, level);
}

// Test that logging options set before Init are applied properly,
// and retained even after Init.
TEST_F(ChannelManagerTest, SetLoggingBeforeInit) {
  cm_->SetVoiceLogging(rtc::LS_INFO, "test-voice");
  cm_->SetVideoLogging(rtc::LS_VERBOSE, "test-video");
  EXPECT_EQ(rtc::LS_INFO, fme_->voice_loglevel());
  EXPECT_STREQ("test-voice", fme_->voice_logfilter().c_str());
  EXPECT_EQ(rtc::LS_VERBOSE, fme_->video_loglevel());
  EXPECT_STREQ("test-video", fme_->video_logfilter().c_str());
  EXPECT_TRUE(cm_->Init());
  EXPECT_EQ(rtc::LS_INFO, fme_->voice_loglevel());
  EXPECT_STREQ("test-voice", fme_->voice_logfilter().c_str());
  EXPECT_EQ(rtc::LS_VERBOSE, fme_->video_loglevel());
  EXPECT_STREQ("test-video", fme_->video_logfilter().c_str());
}

// Test that logging options set after Init are applied properly.
TEST_F(ChannelManagerTest, SetLogging) {
  EXPECT_TRUE(cm_->Init());
  cm_->SetVoiceLogging(rtc::LS_INFO, "test-voice");
  cm_->SetVideoLogging(rtc::LS_VERBOSE, "test-video");
  EXPECT_EQ(rtc::LS_INFO, fme_->voice_loglevel());
  EXPECT_STREQ("test-voice", fme_->voice_logfilter().c_str());
  EXPECT_EQ(rtc::LS_VERBOSE, fme_->video_loglevel());
  EXPECT_STREQ("test-video", fme_->video_logfilter().c_str());
}

// Test that the Video/Voice Processors register and unregister
TEST_F(ChannelManagerTest, RegisterProcessors) {
  cricket::FakeMediaProcessor fmp;
  EXPECT_TRUE(cm_->Init());
  EXPECT_FALSE(fme_->voice_processor_registered(cricket::MPD_TX));
  EXPECT_FALSE(fme_->voice_processor_registered(cricket::MPD_RX));

  EXPECT_FALSE(fme_->voice_processor_registered(cricket::MPD_TX));
  EXPECT_FALSE(fme_->voice_processor_registered(cricket::MPD_RX));

  EXPECT_FALSE(fme_->voice_processor_registered(cricket::MPD_TX));
  EXPECT_FALSE(fme_->voice_processor_registered(cricket::MPD_RX));

  EXPECT_TRUE(cm_->RegisterVoiceProcessor(1,
                                          &fmp,
                                          cricket::MPD_RX));
  EXPECT_FALSE(fme_->voice_processor_registered(cricket::MPD_TX));
  EXPECT_TRUE(fme_->voice_processor_registered(cricket::MPD_RX));


  EXPECT_TRUE(cm_->UnregisterVoiceProcessor(1,
                                            &fmp,
                                            cricket::MPD_RX));
  EXPECT_FALSE(fme_->voice_processor_registered(cricket::MPD_TX));
  EXPECT_FALSE(fme_->voice_processor_registered(cricket::MPD_RX));

  EXPECT_TRUE(cm_->RegisterVoiceProcessor(1,
                                          &fmp,
                                          cricket::MPD_TX));
  EXPECT_TRUE(fme_->voice_processor_registered(cricket::MPD_TX));
  EXPECT_FALSE(fme_->voice_processor_registered(cricket::MPD_RX));

  EXPECT_TRUE(cm_->UnregisterVoiceProcessor(1,
                                            &fmp,
                                            cricket::MPD_TX));
  EXPECT_FALSE(fme_->voice_processor_registered(cricket::MPD_TX));
  EXPECT_FALSE(fme_->voice_processor_registered(cricket::MPD_RX));
}

TEST_F(ChannelManagerTest, SetVideoRtxEnabled) {
  std::vector<VideoCodec> codecs;
  const VideoCodec rtx_codec(96, "rtx", 0, 0, 0, 0);

  // By default RTX is disabled.
  cm_->GetSupportedVideoCodecs(&codecs);
  EXPECT_FALSE(ContainsMatchingCodec(codecs, rtx_codec));

  // Enable and check.
  EXPECT_TRUE(cm_->SetVideoRtxEnabled(true));
  cm_->GetSupportedVideoCodecs(&codecs);
  EXPECT_TRUE(ContainsMatchingCodec(codecs, rtx_codec));

  // Disable and check.
  EXPECT_TRUE(cm_->SetVideoRtxEnabled(false));
  cm_->GetSupportedVideoCodecs(&codecs);
  EXPECT_FALSE(ContainsMatchingCodec(codecs, rtx_codec));

  // Cannot toggle rtx after initialization.
  EXPECT_TRUE(cm_->Init());
  EXPECT_FALSE(cm_->SetVideoRtxEnabled(true));
  EXPECT_FALSE(cm_->SetVideoRtxEnabled(false));

  // Can set again after terminate.
  cm_->Terminate();
  EXPECT_TRUE(cm_->SetVideoRtxEnabled(true));
  cm_->GetSupportedVideoCodecs(&codecs);
  EXPECT_TRUE(ContainsMatchingCodec(codecs, rtx_codec));
}

}  // namespace cricket