video/send_statistics_proxy_unittest.cc - src/webrtc - Git at Google

 /*
  *  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.
  */

 // This file includes unit tests for SendStatisticsProxy.
 #include "webrtc/video/send_statistics_proxy.h"

 #include <map>
 #include <string>
 #include <vector>

 #include "testing/gtest/include/gtest/gtest.h"

 namespace webrtc {

 class SendStatisticsProxyTest : public ::testing::Test {
  public:
   SendStatisticsProxyTest() : avg_delay_ms_(0), max_delay_ms_(0) {}
   virtual ~SendStatisticsProxyTest() {}

  protected:
   virtual void SetUp() {
     statistics_proxy_.reset(
         new SendStatisticsProxy(GetTestConfig()));
     config_ = GetTestConfig();
     expected_ = VideoSendStream::Stats();
   }

   VideoSendStream::Config GetTestConfig() {
     VideoSendStream::Config config;
     config.rtp.ssrcs.push_back(17);
     config.rtp.ssrcs.push_back(42);
     config.rtp.rtx.ssrcs.push_back(18);
     config.rtp.rtx.ssrcs.push_back(43);
     return config;
   }

   void ExpectEqual(VideoSendStream::Stats one, VideoSendStream::Stats other) {
     EXPECT_EQ(one.input_frame_rate, other.input_frame_rate);
     EXPECT_EQ(one.encode_frame_rate, other.encode_frame_rate);
     EXPECT_EQ(one.suspended, other.suspended);

     EXPECT_EQ(one.substreams.size(), other.substreams.size());
     for (std::map<uint32_t, StreamStats>::const_iterator it =
              one.substreams.begin();
          it != one.substreams.end();
          ++it) {
       std::map<uint32_t, StreamStats>::const_iterator corresponding_it =
           other.substreams.find(it->first);
       ASSERT_TRUE(corresponding_it != other.substreams.end());
       const StreamStats& a = it->second;
       const StreamStats& b = corresponding_it->second;

       EXPECT_EQ(a.key_frames, b.key_frames);
       EXPECT_EQ(a.delta_frames, b.delta_frames);
       EXPECT_EQ(a.bitrate_bps, b.bitrate_bps);
       EXPECT_EQ(a.avg_delay_ms, b.avg_delay_ms);
       EXPECT_EQ(a.max_delay_ms, b.max_delay_ms);

       EXPECT_EQ(a.rtp_stats.bytes, b.rtp_stats.bytes);
       EXPECT_EQ(a.rtp_stats.header_bytes, b.rtp_stats.header_bytes);
       EXPECT_EQ(a.rtp_stats.padding_bytes, b.rtp_stats.padding_bytes);
       EXPECT_EQ(a.rtp_stats.packets, b.rtp_stats.packets);
       EXPECT_EQ(a.rtp_stats.retransmitted_packets,
                 b.rtp_stats.retransmitted_packets);
       EXPECT_EQ(a.rtp_stats.fec_packets, b.rtp_stats.fec_packets);

       EXPECT_EQ(a.rtcp_stats.fraction_lost, b.rtcp_stats.fraction_lost);
       EXPECT_EQ(a.rtcp_stats.cumulative_lost, b.rtcp_stats.cumulative_lost);
       EXPECT_EQ(a.rtcp_stats.extended_max_sequence_number,
                 b.rtcp_stats.extended_max_sequence_number);
       EXPECT_EQ(a.rtcp_stats.jitter, b.rtcp_stats.jitter);
     }
   }

   scoped_ptr<SendStatisticsProxy> statistics_proxy_;
   VideoSendStream::Config config_;
   int avg_delay_ms_;
   int max_delay_ms_;
   VideoSendStream::Stats expected_;
   typedef std::map<uint32_t, StreamStats>::const_iterator StreamIterator;
 };

 TEST_F(SendStatisticsProxyTest, RtcpStatistics) {
   RtcpStatisticsCallback* callback = statistics_proxy_.get();
   for (std::vector<uint32_t>::const_iterator it = config_.rtp.ssrcs.begin();
        it != config_.rtp.ssrcs.end();
        ++it) {
     const uint32_t ssrc = *it;
     StreamStats& ssrc_stats = expected_.substreams[ssrc];

     // Add statistics with some arbitrary, but unique, numbers.
     uint32_t offset = ssrc * sizeof(RtcpStatistics);
     ssrc_stats.rtcp_stats.cumulative_lost = offset;
     ssrc_stats.rtcp_stats.extended_max_sequence_number = offset + 1;
     ssrc_stats.rtcp_stats.fraction_lost = offset + 2;
     ssrc_stats.rtcp_stats.jitter = offset + 3;
     callback->StatisticsUpdated(ssrc_stats.rtcp_stats, ssrc);
   }
   for (std::vector<uint32_t>::const_iterator it = config_.rtp.rtx.ssrcs.begin();
        it != config_.rtp.rtx.ssrcs.end();
        ++it) {
     const uint32_t ssrc = *it;
     StreamStats& ssrc_stats = expected_.substreams[ssrc];

     // Add statistics with some arbitrary, but unique, numbers.
     uint32_t offset = ssrc * sizeof(RtcpStatistics);
     ssrc_stats.rtcp_stats.cumulative_lost = offset;
     ssrc_stats.rtcp_stats.extended_max_sequence_number = offset + 1;
     ssrc_stats.rtcp_stats.fraction_lost = offset + 2;
     ssrc_stats.rtcp_stats.jitter = offset + 3;
     callback->StatisticsUpdated(ssrc_stats.rtcp_stats, ssrc);
   }
   VideoSendStream::Stats stats = statistics_proxy_->GetStats();
   ExpectEqual(expected_, stats);
 }

 TEST_F(SendStatisticsProxyTest, FrameRates) {
   const int capture_fps = 31;
   const int encode_fps = 29;

   ViECaptureObserver* capture_observer = statistics_proxy_.get();
   capture_observer->CapturedFrameRate(0, capture_fps);
   ViEEncoderObserver* encoder_observer = statistics_proxy_.get();
   encoder_observer->OutgoingRate(0, encode_fps, 0);

   VideoSendStream::Stats stats = statistics_proxy_->GetStats();
   EXPECT_EQ(capture_fps, stats.input_frame_rate);
   EXPECT_EQ(encode_fps, stats.encode_frame_rate);
 }

 TEST_F(SendStatisticsProxyTest, Suspended) {
   // Verify that the value is false by default.
   EXPECT_FALSE(statistics_proxy_->GetStats().suspended);

   // Verify that we can set it to true.
   ViEEncoderObserver* encoder_observer = statistics_proxy_.get();
   encoder_observer->SuspendChange(0, true);
   EXPECT_TRUE(statistics_proxy_->GetStats().suspended);

   // Verify that we can set it back to false again.
   encoder_observer->SuspendChange(0, false);
   EXPECT_FALSE(statistics_proxy_->GetStats().suspended);
 }

 TEST_F(SendStatisticsProxyTest, FrameCounts) {
   FrameCountObserver* observer = statistics_proxy_.get();
   for (std::vector<uint32_t>::const_iterator it = config_.rtp.ssrcs.begin();
        it != config_.rtp.ssrcs.end();
        ++it) {
     const uint32_t ssrc = *it;
     // Add statistics with some arbitrary, but unique, numbers.
     StreamStats& stats = expected_.substreams[ssrc];
     uint32_t offset = ssrc * sizeof(StreamStats);
     stats.key_frames = offset;
     stats.delta_frames = offset + 1;
     observer->FrameCountUpdated(kVideoFrameKey, stats.key_frames, ssrc);
     observer->FrameCountUpdated(kVideoFrameDelta, stats.delta_frames, ssrc);
   }
   for (std::vector<uint32_t>::const_iterator it = config_.rtp.rtx.ssrcs.begin();
        it != config_.rtp.rtx.ssrcs.end();
        ++it) {
     const uint32_t ssrc = *it;
     // Add statistics with some arbitrary, but unique, numbers.
     StreamStats& stats = expected_.substreams[ssrc];
     uint32_t offset = ssrc * sizeof(StreamStats);
     stats.key_frames = offset;
     stats.delta_frames = offset + 1;
     observer->FrameCountUpdated(kVideoFrameKey, stats.key_frames, ssrc);
     observer->FrameCountUpdated(kVideoFrameDelta, stats.delta_frames, ssrc);
   }

   VideoSendStream::Stats stats = statistics_proxy_->GetStats();
   ExpectEqual(expected_, stats);
 }

 TEST_F(SendStatisticsProxyTest, DataCounters) {
   StreamDataCountersCallback* callback = statistics_proxy_.get();
   for (std::vector<uint32_t>::const_iterator it = config_.rtp.ssrcs.begin();
        it != config_.rtp.ssrcs.end();
        ++it) {
     const uint32_t ssrc = *it;
     StreamDataCounters& counters = expected_.substreams[ssrc].rtp_stats;
     // Add statistics with some arbitrary, but unique, numbers.
     uint32_t offset = ssrc * sizeof(StreamDataCounters);
     counters.bytes = offset;
     counters.header_bytes = offset + 1;
     counters.fec_packets = offset + 2;
     counters.padding_bytes = offset + 3;
     counters.retransmitted_packets = offset + 4;
     counters.packets = offset + 5;
     callback->DataCountersUpdated(counters, ssrc);
   }
   for (std::vector<uint32_t>::const_iterator it = config_.rtp.rtx.ssrcs.begin();
        it != config_.rtp.rtx.ssrcs.end();
        ++it) {
     const uint32_t ssrc = *it;
     StreamDataCounters& counters = expected_.substreams[ssrc].rtp_stats;
     // Add statistics with some arbitrary, but unique, numbers.
     uint32_t offset = ssrc * sizeof(StreamDataCounters);
     counters.bytes = offset;
     counters.header_bytes = offset + 1;
     counters.fec_packets = offset + 2;
     counters.padding_bytes = offset + 3;
     counters.retransmitted_packets = offset + 4;
     counters.packets = offset + 5;
     callback->DataCountersUpdated(counters, ssrc);
   }

   VideoSendStream::Stats stats = statistics_proxy_->GetStats();
   ExpectEqual(expected_, stats);
 }

 TEST_F(SendStatisticsProxyTest, Bitrate) {
   BitrateStatisticsObserver* observer = statistics_proxy_.get();
   for (std::vector<uint32_t>::const_iterator it = config_.rtp.ssrcs.begin();
        it != config_.rtp.ssrcs.end();
        ++it) {
     const uint32_t ssrc = *it;
     BitrateStatistics bitrate;
     // Use ssrc as bitrate_bps to get a unique value for each stream.
     bitrate.bitrate_bps = ssrc;
     observer->Notify(bitrate, ssrc);
     expected_.substreams[ssrc].bitrate_bps = ssrc;
   }
   for (std::vector<uint32_t>::const_iterator it = config_.rtp.rtx.ssrcs.begin();
        it != config_.rtp.rtx.ssrcs.end();
        ++it) {
     const uint32_t ssrc = *it;
     BitrateStatistics bitrate;
     // Use ssrc as bitrate_bps to get a unique value for each stream.
     bitrate.bitrate_bps = ssrc;
     observer->Notify(bitrate, ssrc);
     expected_.substreams[ssrc].bitrate_bps = ssrc;
   }

   VideoSendStream::Stats stats = statistics_proxy_->GetStats();
   ExpectEqual(expected_, stats);
 }

 TEST_F(SendStatisticsProxyTest, SendSideDelay) {
   SendSideDelayObserver* observer = statistics_proxy_.get();
   for (std::vector<uint32_t>::const_iterator it = config_.rtp.ssrcs.begin();
        it != config_.rtp.ssrcs.end();
        ++it) {
     const uint32_t ssrc = *it;
     // Use ssrc as avg_delay_ms and max_delay_ms to get a unique value for each
     // stream.
     int avg_delay_ms = ssrc;
     int max_delay_ms = ssrc + 1;
     observer->SendSideDelayUpdated(avg_delay_ms, max_delay_ms, ssrc);
     expected_.substreams[ssrc].avg_delay_ms = avg_delay_ms;
     expected_.substreams[ssrc].max_delay_ms = max_delay_ms;
   }
   for (std::vector<uint32_t>::const_iterator it = config_.rtp.rtx.ssrcs.begin();
        it != config_.rtp.rtx.ssrcs.end();
        ++it) {
     const uint32_t ssrc = *it;
     // Use ssrc as avg_delay_ms and max_delay_ms to get a unique value for each
     // stream.
     int avg_delay_ms = ssrc;
     int max_delay_ms = ssrc + 1;
     observer->SendSideDelayUpdated(avg_delay_ms, max_delay_ms, ssrc);
     expected_.substreams[ssrc].avg_delay_ms = avg_delay_ms;
     expected_.substreams[ssrc].max_delay_ms = max_delay_ms;
   }
   VideoSendStream::Stats stats = statistics_proxy_->GetStats();
   ExpectEqual(expected_, stats);
 }

 TEST_F(SendStatisticsProxyTest, NoSubstreams) {
   uint32_t exluded_ssrc =
       std::max(
           *std::max_element(config_.rtp.ssrcs.begin(), config_.rtp.ssrcs.end()),
           *std::max_element(config_.rtp.rtx.ssrcs.begin(),
                             config_.rtp.rtx.ssrcs.end())) +
       1;
   // From RtcpStatisticsCallback.
   RtcpStatistics rtcp_stats;
   RtcpStatisticsCallback* rtcp_callback = statistics_proxy_.get();
   rtcp_callback->StatisticsUpdated(rtcp_stats, exluded_ssrc);

   // From StreamDataCountersCallback.
   StreamDataCounters rtp_stats;
   StreamDataCountersCallback* rtp_callback = statistics_proxy_.get();
   rtp_callback->DataCountersUpdated(rtp_stats, exluded_ssrc);

   // From BitrateStatisticsObserver.
   BitrateStatistics bitrate;
   BitrateStatisticsObserver* bitrate_observer = statistics_proxy_.get();
   bitrate_observer->Notify(bitrate, exluded_ssrc);

   // From FrameCountObserver.
   FrameCountObserver* fps_observer = statistics_proxy_.get();
   fps_observer->FrameCountUpdated(kVideoFrameKey, 1, exluded_ssrc);

   VideoSendStream::Stats stats = statistics_proxy_->GetStats();
   EXPECT_TRUE(stats.substreams.empty());
 }

 }  // namespace webrtc
	/*
	* 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.
	*/

	// This file includes unit tests for SendStatisticsProxy.
	#include "webrtc/video/send_statistics_proxy.h"

	#include <map>
	#include <string>
	#include <vector>

	#include "testing/gtest/include/gtest/gtest.h"

	namespace webrtc {

	class SendStatisticsProxyTest : public ::testing::Test {
	public:
	SendStatisticsProxyTest() : avg_delay_ms_(0), max_delay_ms_(0) {}
	virtual ~SendStatisticsProxyTest() {}

	protected:
	virtual void SetUp() {
	statistics_proxy_.reset(
	new SendStatisticsProxy(GetTestConfig()));
	config_ = GetTestConfig();
	expected_ = VideoSendStream::Stats();
	}

	VideoSendStream::Config GetTestConfig() {
	VideoSendStream::Config config;
	config.rtp.ssrcs.push_back(17);
	config.rtp.ssrcs.push_back(42);
	config.rtp.rtx.ssrcs.push_back(18);
	config.rtp.rtx.ssrcs.push_back(43);
	return config;
	}

	void ExpectEqual(VideoSendStream::Stats one, VideoSendStream::Stats other) {
	EXPECT_EQ(one.input_frame_rate, other.input_frame_rate);
	EXPECT_EQ(one.encode_frame_rate, other.encode_frame_rate);
	EXPECT_EQ(one.suspended, other.suspended);

	EXPECT_EQ(one.substreams.size(), other.substreams.size());
	for (std::map<uint32_t, StreamStats>::const_iterator it =
	one.substreams.begin();
	it != one.substreams.end();
	++it) {
	std::map<uint32_t, StreamStats>::const_iterator corresponding_it =
	other.substreams.find(it->first);
	ASSERT_TRUE(corresponding_it != other.substreams.end());
	const StreamStats& a = it->second;
	const StreamStats& b = corresponding_it->second;

	EXPECT_EQ(a.key_frames, b.key_frames);
	EXPECT_EQ(a.delta_frames, b.delta_frames);
	EXPECT_EQ(a.bitrate_bps, b.bitrate_bps);
	EXPECT_EQ(a.avg_delay_ms, b.avg_delay_ms);
	EXPECT_EQ(a.max_delay_ms, b.max_delay_ms);

	EXPECT_EQ(a.rtp_stats.bytes, b.rtp_stats.bytes);
	EXPECT_EQ(a.rtp_stats.header_bytes, b.rtp_stats.header_bytes);
	EXPECT_EQ(a.rtp_stats.padding_bytes, b.rtp_stats.padding_bytes);
	EXPECT_EQ(a.rtp_stats.packets, b.rtp_stats.packets);
	EXPECT_EQ(a.rtp_stats.retransmitted_packets,
	b.rtp_stats.retransmitted_packets);
	EXPECT_EQ(a.rtp_stats.fec_packets, b.rtp_stats.fec_packets);

	EXPECT_EQ(a.rtcp_stats.fraction_lost, b.rtcp_stats.fraction_lost);
	EXPECT_EQ(a.rtcp_stats.cumulative_lost, b.rtcp_stats.cumulative_lost);
	EXPECT_EQ(a.rtcp_stats.extended_max_sequence_number,
	b.rtcp_stats.extended_max_sequence_number);
	EXPECT_EQ(a.rtcp_stats.jitter, b.rtcp_stats.jitter);
	}
	}

	scoped_ptr<SendStatisticsProxy> statistics_proxy_;
	VideoSendStream::Config config_;
	int avg_delay_ms_;
	int max_delay_ms_;
	VideoSendStream::Stats expected_;
	typedef std::map<uint32_t, StreamStats>::const_iterator StreamIterator;
	};

	TEST_F(SendStatisticsProxyTest, RtcpStatistics) {
	RtcpStatisticsCallback* callback = statistics_proxy_.get();
	for (std::vector<uint32_t>::const_iterator it = config_.rtp.ssrcs.begin();
	it != config_.rtp.ssrcs.end();
	++it) {
	const uint32_t ssrc = *it;
	StreamStats& ssrc_stats = expected_.substreams[ssrc];

	// Add statistics with some arbitrary, but unique, numbers.
	uint32_t offset = ssrc * sizeof(RtcpStatistics);
	ssrc_stats.rtcp_stats.cumulative_lost = offset;
	ssrc_stats.rtcp_stats.extended_max_sequence_number = offset + 1;
	ssrc_stats.rtcp_stats.fraction_lost = offset + 2;
	ssrc_stats.rtcp_stats.jitter = offset + 3;
	callback->StatisticsUpdated(ssrc_stats.rtcp_stats, ssrc);
	}
	for (std::vector<uint32_t>::const_iterator it = config_.rtp.rtx.ssrcs.begin();
	it != config_.rtp.rtx.ssrcs.end();
	++it) {
	const uint32_t ssrc = *it;
	StreamStats& ssrc_stats = expected_.substreams[ssrc];

	// Add statistics with some arbitrary, but unique, numbers.
	uint32_t offset = ssrc * sizeof(RtcpStatistics);
	ssrc_stats.rtcp_stats.cumulative_lost = offset;
	ssrc_stats.rtcp_stats.extended_max_sequence_number = offset + 1;
	ssrc_stats.rtcp_stats.fraction_lost = offset + 2;
	ssrc_stats.rtcp_stats.jitter = offset + 3;
	callback->StatisticsUpdated(ssrc_stats.rtcp_stats, ssrc);
	}
	VideoSendStream::Stats stats = statistics_proxy_->GetStats();
	ExpectEqual(expected_, stats);
	}

	TEST_F(SendStatisticsProxyTest, FrameRates) {
	const int capture_fps = 31;
	const int encode_fps = 29;

	ViECaptureObserver* capture_observer = statistics_proxy_.get();
	capture_observer->CapturedFrameRate(0, capture_fps);
	ViEEncoderObserver* encoder_observer = statistics_proxy_.get();
	encoder_observer->OutgoingRate(0, encode_fps, 0);

	VideoSendStream::Stats stats = statistics_proxy_->GetStats();
	EXPECT_EQ(capture_fps, stats.input_frame_rate);
	EXPECT_EQ(encode_fps, stats.encode_frame_rate);
	}

	TEST_F(SendStatisticsProxyTest, Suspended) {
	// Verify that the value is false by default.
	EXPECT_FALSE(statistics_proxy_->GetStats().suspended);

	// Verify that we can set it to true.
	ViEEncoderObserver* encoder_observer = statistics_proxy_.get();
	encoder_observer->SuspendChange(0, true);
	EXPECT_TRUE(statistics_proxy_->GetStats().suspended);

	// Verify that we can set it back to false again.
	encoder_observer->SuspendChange(0, false);
	EXPECT_FALSE(statistics_proxy_->GetStats().suspended);
	}

	TEST_F(SendStatisticsProxyTest, FrameCounts) {
	FrameCountObserver* observer = statistics_proxy_.get();
	for (std::vector<uint32_t>::const_iterator it = config_.rtp.ssrcs.begin();
	it != config_.rtp.ssrcs.end();
	++it) {
	const uint32_t ssrc = *it;
	// Add statistics with some arbitrary, but unique, numbers.
	StreamStats& stats = expected_.substreams[ssrc];
	uint32_t offset = ssrc * sizeof(StreamStats);
	stats.key_frames = offset;
	stats.delta_frames = offset + 1;
	observer->FrameCountUpdated(kVideoFrameKey, stats.key_frames, ssrc);
	observer->FrameCountUpdated(kVideoFrameDelta, stats.delta_frames, ssrc);
	}
	for (std::vector<uint32_t>::const_iterator it = config_.rtp.rtx.ssrcs.begin();
	it != config_.rtp.rtx.ssrcs.end();
	++it) {
	const uint32_t ssrc = *it;
	// Add statistics with some arbitrary, but unique, numbers.
	StreamStats& stats = expected_.substreams[ssrc];
	uint32_t offset = ssrc * sizeof(StreamStats);
	stats.key_frames = offset;
	stats.delta_frames = offset + 1;
	observer->FrameCountUpdated(kVideoFrameKey, stats.key_frames, ssrc);
	observer->FrameCountUpdated(kVideoFrameDelta, stats.delta_frames, ssrc);
	}

	VideoSendStream::Stats stats = statistics_proxy_->GetStats();
	ExpectEqual(expected_, stats);
	}

	TEST_F(SendStatisticsProxyTest, DataCounters) {
	StreamDataCountersCallback* callback = statistics_proxy_.get();
	for (std::vector<uint32_t>::const_iterator it = config_.rtp.ssrcs.begin();
	it != config_.rtp.ssrcs.end();
	++it) {
	const uint32_t ssrc = *it;
	StreamDataCounters& counters = expected_.substreams[ssrc].rtp_stats;
	// Add statistics with some arbitrary, but unique, numbers.
	uint32_t offset = ssrc * sizeof(StreamDataCounters);
	counters.bytes = offset;
	counters.header_bytes = offset + 1;
	counters.fec_packets = offset + 2;
	counters.padding_bytes = offset + 3;
	counters.retransmitted_packets = offset + 4;
	counters.packets = offset + 5;
	callback->DataCountersUpdated(counters, ssrc);
	}
	for (std::vector<uint32_t>::const_iterator it = config_.rtp.rtx.ssrcs.begin();
	it != config_.rtp.rtx.ssrcs.end();
	++it) {
	const uint32_t ssrc = *it;
	StreamDataCounters& counters = expected_.substreams[ssrc].rtp_stats;
	// Add statistics with some arbitrary, but unique, numbers.
	uint32_t offset = ssrc * sizeof(StreamDataCounters);
	counters.bytes = offset;
	counters.header_bytes = offset + 1;
	counters.fec_packets = offset + 2;
	counters.padding_bytes = offset + 3;
	counters.retransmitted_packets = offset + 4;
	counters.packets = offset + 5;
	callback->DataCountersUpdated(counters, ssrc);
	}

	VideoSendStream::Stats stats = statistics_proxy_->GetStats();
	ExpectEqual(expected_, stats);
	}

	TEST_F(SendStatisticsProxyTest, Bitrate) {
	BitrateStatisticsObserver* observer = statistics_proxy_.get();
	for (std::vector<uint32_t>::const_iterator it = config_.rtp.ssrcs.begin();
	it != config_.rtp.ssrcs.end();
	++it) {
	const uint32_t ssrc = *it;
	BitrateStatistics bitrate;
	// Use ssrc as bitrate_bps to get a unique value for each stream.
	bitrate.bitrate_bps = ssrc;
	observer->Notify(bitrate, ssrc);
	expected_.substreams[ssrc].bitrate_bps = ssrc;
	}
	for (std::vector<uint32_t>::const_iterator it = config_.rtp.rtx.ssrcs.begin();
	it != config_.rtp.rtx.ssrcs.end();
	++it) {
	const uint32_t ssrc = *it;
	BitrateStatistics bitrate;
	// Use ssrc as bitrate_bps to get a unique value for each stream.
	bitrate.bitrate_bps = ssrc;
	observer->Notify(bitrate, ssrc);
	expected_.substreams[ssrc].bitrate_bps = ssrc;
	}

	VideoSendStream::Stats stats = statistics_proxy_->GetStats();
	ExpectEqual(expected_, stats);
	}

	TEST_F(SendStatisticsProxyTest, SendSideDelay) {
	SendSideDelayObserver* observer = statistics_proxy_.get();
	for (std::vector<uint32_t>::const_iterator it = config_.rtp.ssrcs.begin();
	it != config_.rtp.ssrcs.end();
	++it) {
	const uint32_t ssrc = *it;
	// Use ssrc as avg_delay_ms and max_delay_ms to get a unique value for each
	// stream.
	int avg_delay_ms = ssrc;
	int max_delay_ms = ssrc + 1;
	observer->SendSideDelayUpdated(avg_delay_ms, max_delay_ms, ssrc);
	expected_.substreams[ssrc].avg_delay_ms = avg_delay_ms;
	expected_.substreams[ssrc].max_delay_ms = max_delay_ms;
	}
	for (std::vector<uint32_t>::const_iterator it = config_.rtp.rtx.ssrcs.begin();
	it != config_.rtp.rtx.ssrcs.end();
	++it) {
	const uint32_t ssrc = *it;
	// Use ssrc as avg_delay_ms and max_delay_ms to get a unique value for each
	// stream.
	int avg_delay_ms = ssrc;
	int max_delay_ms = ssrc + 1;
	observer->SendSideDelayUpdated(avg_delay_ms, max_delay_ms, ssrc);
	expected_.substreams[ssrc].avg_delay_ms = avg_delay_ms;
	expected_.substreams[ssrc].max_delay_ms = max_delay_ms;
	}
	VideoSendStream::Stats stats = statistics_proxy_->GetStats();
	ExpectEqual(expected_, stats);
	}

	TEST_F(SendStatisticsProxyTest, NoSubstreams) {
	uint32_t exluded_ssrc =
	std::max(
	*std::max_element(config_.rtp.ssrcs.begin(), config_.rtp.ssrcs.end()),
	*std::max_element(config_.rtp.rtx.ssrcs.begin(),
	config_.rtp.rtx.ssrcs.end())) +
	1;
	// From RtcpStatisticsCallback.
	RtcpStatistics rtcp_stats;
	RtcpStatisticsCallback* rtcp_callback = statistics_proxy_.get();
	rtcp_callback->StatisticsUpdated(rtcp_stats, exluded_ssrc);

	// From StreamDataCountersCallback.
	StreamDataCounters rtp_stats;
	StreamDataCountersCallback* rtp_callback = statistics_proxy_.get();
	rtp_callback->DataCountersUpdated(rtp_stats, exluded_ssrc);

	// From BitrateStatisticsObserver.
	BitrateStatistics bitrate;
	BitrateStatisticsObserver* bitrate_observer = statistics_proxy_.get();
	bitrate_observer->Notify(bitrate, exluded_ssrc);

	// From FrameCountObserver.
	FrameCountObserver* fps_observer = statistics_proxy_.get();
	fps_observer->FrameCountUpdated(kVideoFrameKey, 1, exluded_ssrc);

	VideoSendStream::Stats stats = statistics_proxy_->GetStats();
	EXPECT_TRUE(stats.substreams.empty());
	}

	} // namespace webrtc