media/audio/cras/cras_input_unittest.cc

   1 // Copyright (c) 2012 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 <string>
   6
   7 #include "base/synchronization/waitable_event.h"
   8 #include "base/test/test_timeouts.h"
   9 #include "base/time/time.h"
  10 #include "media/audio/cras/audio_manager_cras.h"
  11 #include "media/audio/fake_audio_log_factory.h"
  12 #include "testing/gmock/include/gmock/gmock.h"
  13 #include "testing/gtest/include/gtest/gtest.h"
  14
  15 // cras_util.h defines custom min/max macros which break compilation, so ensure
  16 // it's not included until last.  #if avoids presubmit errors.
  17 #if defined(USE_CRAS)
  18 #include "media/audio/cras/cras_input.h"
  19 #endif
  20
  21 using testing::_;
  22 using testing::AtLeast;
  23 using testing::Ge;
  24 using testing::InvokeWithoutArgs;
  25 using testing::StrictMock;
  26
  27 namespace media {
  28
  29 class MockAudioInputCallback : public AudioInputStream::AudioInputCallback {
  30  public:
  31   MOCK_METHOD4(OnData,
  32                void(AudioInputStream*, const AudioBus*, uint32, double));
  33   MOCK_METHOD1(OnError, void(AudioInputStream*));
  34 };
  35
  36 class MockAudioManagerCrasInput : public AudioManagerCras {
  37  public:
  38   MockAudioManagerCrasInput() : AudioManagerCras(&fake_audio_log_factory_) {}
  39
  40   // We need to override this function in order to skip checking the number
  41   // of active output streams. It is because the number of active streams
  42   // is managed inside MakeAudioInputStream, and we don't use
  43   // MakeAudioInputStream to create the stream in the tests.
  44   virtual void ReleaseInputStream(AudioInputStream* stream) override {
  45     DCHECK(stream);
  46     delete stream;
  47   }
  48
  49  private:
  50   FakeAudioLogFactory fake_audio_log_factory_;
  51 };
  52
  53 class CrasInputStreamTest : public testing::Test {
  54  protected:
  55   CrasInputStreamTest() {
  56     mock_manager_.reset(new StrictMock<MockAudioManagerCrasInput>());
  57   }
  58
  59   virtual ~CrasInputStreamTest() {
  60   }
  61
  62   CrasInputStream* CreateStream(ChannelLayout layout) {
  63     return CreateStream(layout, kTestFramesPerPacket);
  64   }
  65
  66   CrasInputStream* CreateStream(ChannelLayout layout,
  67                                 int32 samples_per_packet) {
  68     AudioParameters params(kTestFormat,
  69                            layout,
  70                            kTestSampleRate,
  71                            kTestBitsPerSample,
  72                            samples_per_packet);
  73     return new CrasInputStream(params, mock_manager_.get(),
  74                                AudioManagerBase::kDefaultDeviceId);
  75   }
  76
  77   void CaptureSomeFrames(const AudioParameters &params,
  78                          unsigned int duration_ms) {
  79     CrasInputStream* test_stream = new CrasInputStream(
  80         params, mock_manager_.get(), AudioManagerBase::kDefaultDeviceId);
  81
  82     ASSERT_TRUE(test_stream->Open());
  83
  84     // Allow 8 frames variance for SRC in the callback.  Different numbers of
  85     // samples can be provided when doing non-integer SRC.  For example
  86     // converting from 192k to 44.1k is a ratio of 4.35 to 1.
  87     MockAudioInputCallback mock_callback;
  88     base::WaitableEvent event(false, false);
  89
  90     EXPECT_CALL(mock_callback, OnData(test_stream, _, _, _))
  91         .WillOnce(InvokeWithoutArgs(&event, &base::WaitableEvent::Signal));
  92
  93     test_stream->Start(&mock_callback);
  94
  95     // Wait for samples to be captured.
  96     EXPECT_TRUE(event.TimedWait(TestTimeouts::action_timeout()));
  97
  98     test_stream->Stop();
  99     test_stream->Close();
 100   }
 101
 102   static const unsigned int kTestBitsPerSample;
 103   static const unsigned int kTestCaptureDurationMs;
 104   static const ChannelLayout kTestChannelLayout;
 105   static const AudioParameters::Format kTestFormat;
 106   static const uint32 kTestFramesPerPacket;
 107   static const int kTestSampleRate;
 108
 109   scoped_ptr<StrictMock<MockAudioManagerCrasInput> > mock_manager_;
 110
 111  private:
 112   DISALLOW_COPY_AND_ASSIGN(CrasInputStreamTest);
 113 };
 114
 115 const unsigned int CrasInputStreamTest::kTestBitsPerSample = 16;
 116 const unsigned int CrasInputStreamTest::kTestCaptureDurationMs = 250;
 117 const ChannelLayout CrasInputStreamTest::kTestChannelLayout =
 118     CHANNEL_LAYOUT_STEREO;
 119 const AudioParameters::Format CrasInputStreamTest::kTestFormat =
 120     AudioParameters::AUDIO_PCM_LINEAR;
 121 const uint32 CrasInputStreamTest::kTestFramesPerPacket = 1000;
 122 const int CrasInputStreamTest::kTestSampleRate = 44100;
 123
 124 TEST_F(CrasInputStreamTest, OpenMono) {
 125   CrasInputStream* test_stream = CreateStream(CHANNEL_LAYOUT_MONO);
 126   EXPECT_TRUE(test_stream->Open());
 127   test_stream->Close();
 128 }
 129
 130 TEST_F(CrasInputStreamTest, OpenStereo) {
 131   CrasInputStream* test_stream = CreateStream(CHANNEL_LAYOUT_STEREO);
 132   EXPECT_TRUE(test_stream->Open());
 133   test_stream->Close();
 134 }
 135
 136 TEST_F(CrasInputStreamTest, BadBitsPerSample) {
 137   AudioParameters bad_bps_params(kTestFormat,
 138                                  kTestChannelLayout,
 139                                  kTestSampleRate,
 140                                  kTestBitsPerSample - 1,
 141                                  kTestFramesPerPacket);
 142   CrasInputStream* test_stream = new CrasInputStream(
 143       bad_bps_params, mock_manager_.get(), AudioManagerBase::kDefaultDeviceId);
 144   EXPECT_FALSE(test_stream->Open());
 145   test_stream->Close();
 146 }
 147
 148 TEST_F(CrasInputStreamTest, BadFormat) {
 149   AudioParameters bad_format_params(AudioParameters::AUDIO_LAST_FORMAT,
 150                                     kTestChannelLayout,
 151                                     kTestSampleRate,
 152                                     kTestBitsPerSample,
 153                                     kTestFramesPerPacket);
 154   CrasInputStream* test_stream = new CrasInputStream(
 155       bad_format_params, mock_manager_.get(),
 156       AudioManagerBase::kDefaultDeviceId);
 157   EXPECT_FALSE(test_stream->Open());
 158   test_stream->Close();
 159 }
 160
 161 TEST_F(CrasInputStreamTest, BadSampleRate) {
 162   AudioParameters bad_rate_params(kTestFormat,
 163                                   kTestChannelLayout,
 164                                   0,
 165                                   kTestBitsPerSample,
 166                                   kTestFramesPerPacket);
 167   CrasInputStream* test_stream = new CrasInputStream(
 168       bad_rate_params, mock_manager_.get(), AudioManagerBase::kDefaultDeviceId);
 169   EXPECT_FALSE(test_stream->Open());
 170   test_stream->Close();
 171 }
 172
 173 TEST_F(CrasInputStreamTest, SetGetVolume) {
 174   CrasInputStream* test_stream = CreateStream(CHANNEL_LAYOUT_MONO);
 175   EXPECT_TRUE(test_stream->Open());
 176
 177   double max_volume = test_stream->GetMaxVolume();
 178   EXPECT_GE(max_volume, 1.0);
 179
 180   test_stream->SetVolume(max_volume / 2);
 181
 182   double new_volume = test_stream->GetVolume();
 183
 184   EXPECT_GE(new_volume, 0.0);
 185   EXPECT_LE(new_volume, max_volume);
 186
 187   test_stream->Close();
 188 }
 189
 190 TEST_F(CrasInputStreamTest, CaptureFrames) {
 191   const unsigned int rates[] =
 192       {8000, 16000, 22050, 32000, 44100, 48000, 96000, 192000};
 193
 194   for (unsigned int i = 0; i < ARRAY_SIZE(rates); i++) {
 195     SCOPED_TRACE(testing::Message() << "Mono " << rates[i] << "Hz");
 196     AudioParameters params_mono(kTestFormat,
 197                                 CHANNEL_LAYOUT_MONO,
 198                                 rates[i],
 199                                 kTestBitsPerSample,
 200                                 kTestFramesPerPacket);
 201     CaptureSomeFrames(params_mono, kTestCaptureDurationMs);
 202   }
 203
 204   for (unsigned int i = 0; i < ARRAY_SIZE(rates); i++) {
 205     SCOPED_TRACE(testing::Message() << "Stereo " << rates[i] << "Hz");
 206     AudioParameters params_stereo(kTestFormat,
 207                                   CHANNEL_LAYOUT_STEREO,
 208                                   rates[i],
 209                                   kTestBitsPerSample,
 210                                   kTestFramesPerPacket);
 211     CaptureSomeFrames(params_stereo, kTestCaptureDurationMs);
 212   }
 213 }
 214
 215 }  // namespace media