src/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/audio_utility.h"
  15 #include "media/cast/test/fake_task_runner.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()
  32       : number_of_rtp_packets_(0),
  33         number_of_rtcp_packets_(0) {}
  34
  35   virtual bool SendPacket(const Packet& packet) OVERRIDE {
  36     if (Rtcp::IsRtcpPacket(&packet[0], packet.size())) {
  37       ++number_of_rtcp_packets_;
  38     } else {
  39       ++number_of_rtp_packets_;
  40     }
  41     return true;
  42   }
  43
  44   int number_of_rtp_packets() const {
  45     return number_of_rtp_packets_;
  46   }
  47
  48   int number_of_rtcp_packets() const {
  49     return number_of_rtcp_packets_;
  50   }
  51
  52  private:
  53   int number_of_rtp_packets_;
  54   int number_of_rtcp_packets_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(TestPacketSender);
  57 };
  58
  59 class AudioSenderTest : public ::testing::Test {
  60  public:
  61   MOCK_METHOD0(InsertAudioCallback, void());
  62
  63  protected:
  64   AudioSenderTest() {
  65     InitializeMediaLibraryForTesting();
  66     testing_clock_ = new base::SimpleTestTickClock();
  67     testing_clock_->Advance(
  68         base::TimeDelta::FromMilliseconds(kStartMillisecond));
  69     task_runner_ = new test::FakeTaskRunner(testing_clock_);
  70     cast_environment_ = new CastEnvironment(
  71         scoped_ptr<base::TickClock>(testing_clock_).Pass(),
  72         task_runner_, task_runner_, task_runner_, task_runner_,
  73         task_runner_, task_runner_, GetDefaultCastSenderLoggingConfig());
  74     audio_config_.codec = transport::kOpus;
  75     audio_config_.use_external_encoder = false;
  76     audio_config_.frequency = kDefaultAudioSamplingRate;
  77     audio_config_.channels = 2;
  78     audio_config_.bitrate = kDefaultAudioEncoderBitrate;
  79     audio_config_.rtp_payload_type = 127;
  80
  81     transport::CastTransportConfig transport_config;
  82     transport_config.audio_rtp_payload_type = 127;
  83     transport_config.audio_channels = 2;
  84     transport_sender_.reset(new transport::CastTransportSenderImpl(
  85         testing_clock_,
  86         transport_config,
  87         base::Bind(&UpdateCastTransportStatus), task_runner_));
  88     transport_sender_->InsertFakeTransportForTesting(&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::FakeTaskRunner> 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(TestAudioBusFactory(
 114       audio_config_.channels, audio_config_.frequency,
 115       TestAudioBusFactory::kMiddleANoteFreq, 0.5f).NextAudioBus(kDuration));
 116
 117   base::TimeTicks recorded_time = base::TimeTicks::Now();
 118   audio_sender_->InsertAudio(
 119       bus.get(),
 120       recorded_time,
 121       base::Bind(
 122           &AudioSenderTest::InsertAudioCallback,
 123           base::Unretained(this)));
 124   task_runner_->RunTasks();
 125   EXPECT_GE(transport_.number_of_rtp_packets() +
 126             transport_.number_of_rtcp_packets(), 1);
 127 }
 128
 129 TEST_F(AudioSenderTest, RtcpTimer) {
 130   EXPECT_CALL(*this, InsertAudioCallback()).Times(Exactly(1));
 131
 132   const base::TimeDelta kDuration = base::TimeDelta::FromMilliseconds(20);
 133   scoped_ptr<AudioBus> bus(TestAudioBusFactory(
 134       audio_config_.channels, audio_config_.frequency,
 135       TestAudioBusFactory::kMiddleANoteFreq, 0.5f).NextAudioBus(kDuration));
 136
 137   base::TimeTicks recorded_time = base::TimeTicks::Now();
 138   audio_sender_->InsertAudio(
 139       bus.get(), recorded_time,
 140       base::Bind(
 141           &AudioSenderTest::InsertAudioCallback,
 142           base::Unretained(this)));
 143   task_runner_->RunTasks();
 144
 145   // Make sure that we send at least one RTCP packet.
 146   base::TimeDelta max_rtcp_timeout =
 147       base::TimeDelta::FromMilliseconds(1 + kDefaultRtcpIntervalMs * 3 / 2);
 148   testing_clock_->Advance(max_rtcp_timeout);
 149   task_runner_->RunTasks();
 150   EXPECT_GE(transport_.number_of_rtp_packets(), 1);
 151   EXPECT_EQ(transport_.number_of_rtcp_packets(), 1);
 152 }
 153
 154 }  // namespace cast
 155 }  // namespace media