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 }
  67
  68 TEST(AudioParameters, GetBytesPerSecond) {
  69   EXPECT_EQ(0, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  70                                CHANNEL_LAYOUT_NONE, 0, 0, 0)
  71                                .GetBytesPerSecond());
  72   EXPECT_EQ(0, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  73                                CHANNEL_LAYOUT_STEREO, 0, 0, 0)
  74                                .GetBytesPerSecond());
  75   EXPECT_EQ(0, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  76                                CHANNEL_LAYOUT_NONE, 100, 0, 0)
  77                                .GetBytesPerSecond());
  78   EXPECT_EQ(0, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  79                                CHANNEL_LAYOUT_NONE, 0, 8, 0)
  80                                .GetBytesPerSecond());
  81   EXPECT_EQ(200, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  82                                  CHANNEL_LAYOUT_STEREO, 100, 8, 0)
  83                                  .GetBytesPerSecond());
  84 }
  85
  86 TEST(AudioParameters, Compare) {
  87   AudioParameters values[] = {
  88     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  89                     1000,  8, 100),
  90     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  91                     1000,  8, 200),
  92     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  93                     1000, 16, 100),
  94     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  95                     1000, 16, 200),
  96     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  97                     2000,  8, 100),
  98     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  99                     2000,  8, 200),
 100     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
 101                     2000, 16, 100),
 102     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
 103                     2000, 16, 200),
 104
 105     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 106                     1000,  8, 100),
 107     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 108                     1000,  8, 200),
 109     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 110                     1000, 16, 100),
 111     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 112                     1000, 16, 200),
 113     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 114                     2000,  8, 100),
 115     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 116                     2000,  8, 200),
 117     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 118                     2000, 16, 100),
 119     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 120                     2000, 16, 200),
 121
 122     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 123                     1000,  8, 100),
 124     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 125                     1000,  8, 200),
 126     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 127                     1000, 16, 100),
 128     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 129                     1000, 16, 200),
 130     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 131                     2000,  8, 100),
 132     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 133                     2000,  8, 200),
 134     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 135                     2000, 16, 100),
 136     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 137                     2000, 16, 200),
 138
 139     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 140                     CHANNEL_LAYOUT_STEREO, 1000,  8, 100),
 141     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 142                     CHANNEL_LAYOUT_STEREO, 1000,  8, 200),
 143     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 144                     CHANNEL_LAYOUT_STEREO, 1000, 16, 100),
 145     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 146                     CHANNEL_LAYOUT_STEREO, 1000, 16, 200),
 147     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 148                     CHANNEL_LAYOUT_STEREO, 2000,  8, 100),
 149     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 150                     CHANNEL_LAYOUT_STEREO, 2000,  8, 200),
 151     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 152                     CHANNEL_LAYOUT_STEREO, 2000, 16, 100),
 153     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 154                     CHANNEL_LAYOUT_STEREO, 2000, 16, 200),
 155   };
 156
 157   for (size_t i = 0; i < arraysize(values); ++i) {
 158     for (size_t j = 0; j < arraysize(values); ++j) {
 159       SCOPED_TRACE("i=" + base::IntToString(i) + " j=" + base::IntToString(j));
 160       EXPECT_EQ(i < j, values[i] < values[j]);
 161     }
 162
 163     // Verify that a value is never less than itself.
 164     EXPECT_FALSE(values[i] < values[i]);
 165   }
 166 }
 167
 168 }  // namespace media