media/cast/audio_sender/audio_sender_unittest.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/bind.h"
   6 #include "base/bind_helpers.h"
   7 #include "base/memory/scoped_ptr.h"
   8 #include "base/test/simple_test_tick_clock.h"
   9 #include "media/base/media.h"
  10 #include "media/cast/audio_sender/audio_sender.h"
  11 #include "media/cast/cast_config.h"
  12 #include "media/cast/cast_environment.h"
  13 #include "media/cast/rtcp/rtcp.h"
  14 #include "media/cast/test/fake_single_thread_task_runner.h"
  15 #include "media/cast/test/utility/audio_utility.h"
  16 #include "media/cast/transport/cast_transport_config.h"
  17 #include "media/cast/transport/cast_transport_sender_impl.h"
  18 #include "testing/gmock/include/gmock/gmock.h"
  19 #include "testing/gtest/include/gtest/gtest.h"
  20
  21 namespace media {
  22 namespace cast {
  23
  24 static const int64 kStartMillisecond = GG_INT64_C(12345678900000);
  25
  26 using testing::_;
  27 using testing::Exactly;
  28
  29 class TestPacketSender : public transport::PacketSender {
  30  public:
  31   TestPacketSender() : number_of_rtp_packets_(0), number_of_rtcp_packets_(0) {}
  32
  33   virtual bool SendPacket(const Packet& packet) OVERRIDE {
  34     if (Rtcp::IsRtcpPacket(&packet[0], packet.size())) {
  35       ++number_of_rtcp_packets_;
  36     } else {
  37       ++number_of_rtp_packets_;
  38     }
  39     return true;
  40   }
  41
  42   int number_of_rtp_packets() const { return number_of_rtp_packets_; }
  43
  44   int number_of_rtcp_packets() const { return number_of_rtcp_packets_; }
  45
  46  private:
  47   int number_of_rtp_packets_;
  48   int number_of_rtcp_packets_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(TestPacketSender);
  51 };
  52
  53 class AudioSenderTest : public ::testing::Test {
  54  public:
  55   MOCK_METHOD0(InsertAudioCallback, void());
  56
  57  protected:
  58   AudioSenderTest() {
  59     InitializeMediaLibraryForTesting();
  60     testing_clock_ = new base::SimpleTestTickClock();
  61     testing_clock_->Advance(
  62         base::TimeDelta::FromMilliseconds(kStartMillisecond));
  63     task_runner_ = new test::FakeSingleThreadTaskRunner(testing_clock_);
  64     cast_environment_ =
  65         new CastEnvironment(scoped_ptr<base::TickClock>(testing_clock_).Pass(),
  66                             task_runner_,
  67                             task_runner_,
  68                             task_runner_,
  69                             task_runner_,
  70                             task_runner_,
  71                             task_runner_,
  72                             GetDefaultCastSenderLoggingConfig());
  73     audio_config_.codec = transport::kOpus;
  74     audio_config_.use_external_encoder = false;
  75     audio_config_.frequency = kDefaultAudioSamplingRate;
  76     audio_config_.channels = 2;
  77     audio_config_.bitrate = kDefaultAudioEncoderBitrate;
  78     audio_config_.rtp_config.payload_type = 127;
  79
  80     transport::CastTransportConfig transport_config;
  81     transport_config.audio_rtp_config.payload_type = 127;
  82     transport_config.audio_channels = 2;
  83     transport_sender_.reset(new transport::CastTransportSenderImpl(
  84         testing_clock_,
  85         transport_config,
  86         base::Bind(&UpdateCastTransportStatus),
  87         task_runner_,
  88         &transport_));
  89     audio_sender_.reset(new AudioSender(
  90         cast_environment_, audio_config_, transport_sender_.get()));
  91     task_runner_->RunTasks();
  92   }
  93
  94   virtual ~AudioSenderTest() {}
  95
  96   static void UpdateCastTransportStatus(transport::CastTransportStatus status) {
  97     EXPECT_EQ(status, transport::TRANSPORT_INITIALIZED);
  98   }
  99
 100   base::SimpleTestTickClock* testing_clock_;  // Owned by CastEnvironment.
 101   TestPacketSender transport_;
 102   scoped_ptr<transport::CastTransportSenderImpl> transport_sender_;
 103   scoped_refptr<test::FakeSingleThreadTaskRunner> task_runner_;
 104   scoped_ptr<AudioSender> audio_sender_;
 105   scoped_refptr<CastEnvironment> cast_environment_;
 106   AudioSenderConfig audio_config_;
 107 };
 108
 109 TEST_F(AudioSenderTest, Encode20ms) {
 110   EXPECT_CALL(*this, InsertAudioCallback()).Times(Exactly(1));
 111
 112   const base::TimeDelta kDuration = base::TimeDelta::FromMilliseconds(20);
 113   scoped_ptr<AudioBus> bus(
 114       TestAudioBusFactory(audio_config_.channels,
 115                           audio_config_.frequency,
 116                           TestAudioBusFactory::kMiddleANoteFreq,
 117                           0.5f).NextAudioBus(kDuration));
 118
 119   base::TimeTicks recorded_time = base::TimeTicks::Now();
 120   audio_sender_->InsertAudio(bus.get(),
 121                              recorded_time,
 122                              base::Bind(&AudioSenderTest::InsertAudioCallback,
 123                                         base::Unretained(this)));
 124   task_runner_->RunTasks();
 125   EXPECT_GE(
 126       transport_.number_of_rtp_packets() + transport_.number_of_rtcp_packets(),
 127       1);
 128 }
 129
 130 TEST_F(AudioSenderTest, RtcpTimer) {
 131   EXPECT_CALL(*this, InsertAudioCallback()).Times(Exactly(1));
 132
 133   const base::TimeDelta kDuration = base::TimeDelta::FromMilliseconds(20);
 134   scoped_ptr<AudioBus> bus(
 135       TestAudioBusFactory(audio_config_.channels,
 136                           audio_config_.frequency,
 137                           TestAudioBusFactory::kMiddleANoteFreq,
 138                           0.5f).NextAudioBus(kDuration));
 139
 140   base::TimeTicks recorded_time = base::TimeTicks::Now();
 141   audio_sender_->InsertAudio(bus.get(),
 142                              recorded_time,
 143                              base::Bind(&AudioSenderTest::InsertAudioCallback,
 144                                         base::Unretained(this)));
 145   task_runner_->RunTasks();
 146
 147   // Make sure that we send at least one RTCP packet.
 148   base::TimeDelta max_rtcp_timeout =
 149       base::TimeDelta::FromMilliseconds(1 + kDefaultRtcpIntervalMs * 3 / 2);
 150   testing_clock_->Advance(max_rtcp_timeout);
 151   task_runner_->RunTasks();
 152   EXPECT_GE(transport_.number_of_rtp_packets(), 1);
 153   EXPECT_EQ(transport_.number_of_rtcp_packets(), 1);
 154 }
 155
 156 }  // namespace cast
 157 }  // namespace media