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 <stdint.h>
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/test/simple_test_tick_clock.h"
  11 #include "media/base/media.h"
  12 #include "media/cast/audio_sender/audio_sender.h"
  13 #include "media/cast/cast_config.h"
  14 #include "media/cast/cast_environment.h"
  15 #include "media/cast/rtcp/rtcp.h"
  16 #include "media/cast/test/fake_single_thread_task_runner.h"
  17 #include "media/cast/test/utility/audio_utility.h"
  18 #include "media/cast/transport/cast_transport_config.h"
  19 #include "media/cast/transport/cast_transport_sender_impl.h"
  20 #include "testing/gtest/include/gtest/gtest.h"
  21
  22 namespace media {
  23 namespace cast {
  24
  25 static const int64 kStartMillisecond = INT64_C(12345678900000);
  26
  27 class TestPacketSender : public transport::PacketSender {
  28  public:
  29   TestPacketSender() : number_of_rtp_packets_(0), number_of_rtcp_packets_(0) {}
  30
  31   virtual bool SendPacket(transport::PacketRef packet,
  32                           const base::Closure& cb) OVERRIDE {
  33     if (Rtcp::IsRtcpPacket(&packet->data[0], packet->data.size())) {
  34       ++number_of_rtcp_packets_;
  35     } else {
  36       ++number_of_rtp_packets_;
  37     }
  38     return true;
  39   }
  40
  41   int number_of_rtp_packets() const { return number_of_rtp_packets_; }
  42
  43   int number_of_rtcp_packets() const { return number_of_rtcp_packets_; }
  44
  45  private:
  46   int number_of_rtp_packets_;
  47   int number_of_rtcp_packets_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(TestPacketSender);
  50 };
  51
  52 class AudioSenderTest : public ::testing::Test {
  53  protected:
  54   AudioSenderTest() {
  55     InitializeMediaLibraryForTesting();
  56     testing_clock_ = new base::SimpleTestTickClock();
  57     testing_clock_->Advance(
  58         base::TimeDelta::FromMilliseconds(kStartMillisecond));
  59     task_runner_ = new test::FakeSingleThreadTaskRunner(testing_clock_);
  60     cast_environment_ =
  61         new CastEnvironment(scoped_ptr<base::TickClock>(testing_clock_).Pass(),
  62                             task_runner_,
  63                             task_runner_,
  64                             task_runner_);
  65     audio_config_.codec = transport::kOpus;
  66     audio_config_.use_external_encoder = false;
  67     audio_config_.frequency = kDefaultAudioSamplingRate;
  68     audio_config_.channels = 2;
  69     audio_config_.bitrate = kDefaultAudioEncoderBitrate;
  70     audio_config_.rtp_config.payload_type = 127;
  71
  72     net::IPEndPoint dummy_endpoint;
  73
  74     transport_sender_.reset(new transport::CastTransportSenderImpl(
  75         NULL,
  76         testing_clock_,
  77         dummy_endpoint,
  78         base::Bind(&UpdateCastTransportStatus),
  79         transport::BulkRawEventsCallback(),
  80         base::TimeDelta(),
  81         task_runner_,
  82         &transport_));
  83     audio_sender_.reset(new AudioSender(
  84         cast_environment_, audio_config_, transport_sender_.get()));
  85     task_runner_->RunTasks();
  86   }
  87
  88   virtual ~AudioSenderTest() {}
  89
  90   static void UpdateCastTransportStatus(transport::CastTransportStatus status) {
  91     EXPECT_EQ(status, transport::TRANSPORT_AUDIO_INITIALIZED);
  92   }
  93
  94   base::SimpleTestTickClock* testing_clock_;  // Owned by CastEnvironment.
  95   TestPacketSender transport_;
  96   scoped_ptr<transport::CastTransportSenderImpl> transport_sender_;
  97   scoped_refptr<test::FakeSingleThreadTaskRunner> task_runner_;
  98   scoped_ptr<AudioSender> audio_sender_;
  99   scoped_refptr<CastEnvironment> cast_environment_;
 100   AudioSenderConfig audio_config_;
 101 };
 102
 103 TEST_F(AudioSenderTest, Encode20ms) {
 104   const base::TimeDelta kDuration = base::TimeDelta::FromMilliseconds(20);
 105   scoped_ptr<AudioBus> bus(
 106       TestAudioBusFactory(audio_config_.channels,
 107                           audio_config_.frequency,
 108                           TestAudioBusFactory::kMiddleANoteFreq,
 109                           0.5f).NextAudioBus(kDuration));
 110
 111   base::TimeTicks recorded_time = base::TimeTicks::Now();
 112   audio_sender_->InsertAudio(bus.Pass(), recorded_time);
 113   task_runner_->RunTasks();
 114   EXPECT_GE(
 115       transport_.number_of_rtp_packets() + transport_.number_of_rtcp_packets(),
 116       1);
 117 }
 118
 119 TEST_F(AudioSenderTest, RtcpTimer) {
 120   const base::TimeDelta kDuration = base::TimeDelta::FromMilliseconds(20);
 121   scoped_ptr<AudioBus> bus(
 122       TestAudioBusFactory(audio_config_.channels,
 123                           audio_config_.frequency,
 124                           TestAudioBusFactory::kMiddleANoteFreq,
 125                           0.5f).NextAudioBus(kDuration));
 126
 127   base::TimeTicks recorded_time = base::TimeTicks::Now();
 128   audio_sender_->InsertAudio(bus.Pass(), recorded_time);
 129   task_runner_->RunTasks();
 130
 131   // Make sure that we send at least one RTCP packet.
 132   base::TimeDelta max_rtcp_timeout =
 133       base::TimeDelta::FromMilliseconds(1 + kDefaultRtcpIntervalMs * 3 / 2);
 134   testing_clock_->Advance(max_rtcp_timeout);
 135   task_runner_->RunTasks();
 136   EXPECT_GE(transport_.number_of_rtp_packets(), 1);
 137   EXPECT_EQ(transport_.number_of_rtcp_packets(), 1);
 138 }
 139
 140 }  // namespace cast
 141 }  // namespace media