media/audio/audio_parameters_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 "base/basictypes.h"
   6 #include "base/strings/string_number_conversions.h"
   7 #include "media/audio/audio_parameters.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9
  10 namespace media {
  11
  12 TEST(AudioParameters, Constructor_Default) {
  13   AudioParameters::Format expected_format = AudioParameters::AUDIO_PCM_LINEAR;
  14   int expected_bits = 0;
  15   int expected_channels = 0;
  16   ChannelLayout expected_channel_layout = CHANNEL_LAYOUT_NONE;
  17   int expected_rate = 0;
  18   int expected_samples = 0;
  19   AudioParameters::PlatformEffectsMask expected_effects =
  20       AudioParameters::NO_EFFECTS;
  21   std::vector<Point> expected_mic_positions;
  22
  23   AudioParameters params;
  24
  25   EXPECT_EQ(expected_format, params.format());
  26   EXPECT_EQ(expected_bits, params.bits_per_sample());
  27   EXPECT_EQ(expected_channels, params.channels());
  28   EXPECT_EQ(expected_channel_layout, params.channel_layout());
  29   EXPECT_EQ(expected_rate, params.sample_rate());
  30   EXPECT_EQ(expected_samples, params.frames_per_buffer());
  31   EXPECT_EQ(expected_effects, params.effects());
  32   EXPECT_EQ(expected_mic_positions, params.mic_positions());
  33 }
  34
  35 TEST(AudioParameters, Constructor_ParameterValues) {
  36   AudioParameters::Format expected_format =
  37       AudioParameters::AUDIO_PCM_LOW_LATENCY;
  38   int expected_bits = 16;
  39   int expected_channels = 6;
  40   ChannelLayout expected_channel_layout = CHANNEL_LAYOUT_5_1;
  41   int expected_rate = 44100;
  42   int expected_samples = 880;
  43
  44   AudioParameters params(expected_format, expected_channel_layout,
  45                          expected_rate, expected_bits, expected_samples);
  46
  47   EXPECT_EQ(expected_format, params.format());
  48   EXPECT_EQ(expected_bits, params.bits_per_sample());
  49   EXPECT_EQ(expected_channels, params.channels());
  50   EXPECT_EQ(expected_channel_layout, params.channel_layout());
  51   EXPECT_EQ(expected_rate, params.sample_rate());
  52   EXPECT_EQ(expected_samples, params.frames_per_buffer());
  53 }
  54
  55 TEST(AudioParameters, GetBytesPerBuffer) {
  56   EXPECT_EQ(100, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  57                                  CHANNEL_LAYOUT_MONO, 1000,  8, 100)
  58                                  .GetBytesPerBuffer());
  59   EXPECT_EQ(200, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  60                                  CHANNEL_LAYOUT_MONO, 1000,  16, 100)
  61                                  .GetBytesPerBuffer());
  62   EXPECT_EQ(200, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  63                                  CHANNEL_LAYOUT_STEREO, 1000,  8, 100)
  64                                  .GetBytesPerBuffer());
  65   EXPECT_EQ(200, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  66                                  CHANNEL_LAYOUT_MONO, 1000,  8, 200)
  67                                  .GetBytesPerBuffer());
  68   EXPECT_EQ(800, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  69                                  CHANNEL_LAYOUT_STEREO, 1000,  16, 200)
  70                                  .GetBytesPerBuffer());
  71   EXPECT_EQ(300, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  72                                  CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC,
  73                                  1000, 8, 100)
  74                                  .GetBytesPerBuffer());
  75 }
  76
  77 TEST(AudioParameters, GetBytesPerSecond) {
  78   EXPECT_EQ(0, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  79                                CHANNEL_LAYOUT_NONE, 0, 0, 0)
  80                                .GetBytesPerSecond());
  81   EXPECT_EQ(0, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  82                                CHANNEL_LAYOUT_STEREO, 0, 0, 0)
  83                                .GetBytesPerSecond());
  84   EXPECT_EQ(0, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  85                                CHANNEL_LAYOUT_NONE, 100, 0, 0)
  86                                .GetBytesPerSecond());
  87   EXPECT_EQ(0, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  88                                CHANNEL_LAYOUT_NONE, 0, 8, 0)
  89                                .GetBytesPerSecond());
  90   EXPECT_EQ(200, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  91                                  CHANNEL_LAYOUT_STEREO, 100, 8, 0)
  92                                  .GetBytesPerSecond());
  93 }
  94
  95 TEST(AudioParameters, Compare) {
  96   AudioParameters values[] = {
  97     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  98                     1000,  8, 100),
  99     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
 100                     1000,  8, 200),
 101     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
 102                     1000, 16, 100),
 103     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
 104                     1000, 16, 200),
 105     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
 106                     2000,  8, 100),
 107     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
 108                     2000,  8, 200),
 109     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
 110                     2000, 16, 100),
 111     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
 112                     2000, 16, 200),
 113
 114     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 115                     1000,  8, 100),
 116     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 117                     1000,  8, 200),
 118     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 119                     1000, 16, 100),
 120     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 121                     1000, 16, 200),
 122     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 123                     2000,  8, 100),
 124     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 125                     2000,  8, 200),
 126     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 127                     2000, 16, 100),
 128     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 129                     2000, 16, 200),
 130
 131     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
 132                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 1000,  8, 100),
 133     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
 134                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 1000,  8, 200),
 135     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
 136                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 1000, 16, 100),
 137     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
 138                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 1000, 16, 200),
 139     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
 140                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 2000,  8, 100),
 141     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
 142                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 2000,  8, 200),
 143     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
 144                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 2000, 16, 100),
 145     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
 146                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 2000, 16, 200),
 147
 148     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 149                     1000,  8, 100),
 150     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 151                     1000,  8, 200),
 152     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 153                     1000, 16, 100),
 154     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 155                     1000, 16, 200),
 156     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 157                     2000,  8, 100),
 158     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 159                     2000,  8, 200),
 160     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 161                     2000, 16, 100),
 162     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 163                     2000, 16, 200),
 164
 165     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 166                     CHANNEL_LAYOUT_STEREO, 1000,  8, 100),
 167     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 168                     CHANNEL_LAYOUT_STEREO, 1000,  8, 200),
 169     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 170                     CHANNEL_LAYOUT_STEREO, 1000, 16, 100),
 171     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 172                     CHANNEL_LAYOUT_STEREO, 1000, 16, 200),
 173     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 174                     CHANNEL_LAYOUT_STEREO, 2000,  8, 100),
 175     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 176                     CHANNEL_LAYOUT_STEREO, 2000,  8, 200),
 177     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 178                     CHANNEL_LAYOUT_STEREO, 2000, 16, 100),
 179     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 180                     CHANNEL_LAYOUT_STEREO, 2000, 16, 200),
 181
 182     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 183                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 1000,  8, 100),
 184     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 185                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 1000,  8, 200),
 186     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 187                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 1000, 16, 100),
 188     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 189                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 1000, 16, 200),
 190     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 191                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 2000,  8, 100),
 192     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 193                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 2000,  8, 200),
 194     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 195                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 2000, 16, 100),
 196     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 197                     CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC, 2000, 16, 200),
 198   };
 199
 200   for (size_t i = 0; i < arraysize(values); ++i) {
 201     for (size_t j = 0; j < arraysize(values); ++j) {
 202       SCOPED_TRACE("i=" + base::IntToString(i) + " j=" + base::IntToString(j));
 203       EXPECT_EQ(i < j, values[i] < values[j]);
 204     }
 205
 206     // Verify that a value is never less than itself.
 207     EXPECT_FALSE(values[i] < values[i]);
 208   }
 209 }
 210
 211 TEST(AudioParameters, Constructor_ValidChannelCounts) {
 212   int expected_channels = 8;
 213   ChannelLayout expected_layout = CHANNEL_LAYOUT_DISCRETE;
 214
 215   AudioParameters params(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 216                          expected_layout, 44100, 16, 880);
 217   params.set_channels_for_discrete(expected_channels);
 218   EXPECT_EQ(expected_channels, params.channels());
 219   EXPECT_EQ(expected_layout, params.channel_layout());
 220   EXPECT_TRUE(params.IsValid());
 221 }
 222
 223 }  // namespace media