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