media/audio/audio_parameters_unittest.cc

   1 // Copyright (c) 2011 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/string_number_conversions.h"
   7 #include "media/audio/audio_parameters.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9
  10 TEST(AudioParameters, Constructor_Default) {
  11   AudioParameters::Format expected_format = AudioParameters::AUDIO_PCM_LINEAR;
  12   int expected_bits = 0;
  13   int expected_channels = 0;
  14   ChannelLayout expected_channel_layout = CHANNEL_LAYOUT_NONE;
  15   int expected_rate = 0;
  16   int expected_samples = 0;
  17
  18   AudioParameters params;
  19
  20   EXPECT_EQ(expected_format, params.format);
  21   EXPECT_EQ(expected_bits, params.bits_per_sample);
  22   EXPECT_EQ(expected_channels, params.channels);
  23   EXPECT_EQ(expected_channel_layout, params.channel_layout);
  24   EXPECT_EQ(expected_rate, params.sample_rate);
  25   EXPECT_EQ(expected_samples, params.samples_per_packet);
  26 }
  27
  28 TEST(AudioParameters, Constructor_ParameterValues) {
  29   AudioParameters::Format expected_format =
  30       AudioParameters::AUDIO_PCM_LOW_LATENCY;
  31   int expected_bits = 16;
  32   int expected_channels = 6;
  33   ChannelLayout expected_channel_layout = CHANNEL_LAYOUT_5POINT1;
  34   int expected_rate = 44100;
  35   int expected_samples = 880;
  36
  37   AudioParameters params(expected_format, expected_channel_layout,
  38                          expected_rate, expected_bits, expected_samples);
  39
  40   EXPECT_EQ(expected_format, params.format);
  41   EXPECT_EQ(expected_bits, params.bits_per_sample);
  42   EXPECT_EQ(expected_channels, params.channels);
  43   EXPECT_EQ(expected_channel_layout, params.channel_layout);
  44   EXPECT_EQ(expected_rate, params.sample_rate);
  45   EXPECT_EQ(expected_samples, params.samples_per_packet);
  46 }
  47
  48 TEST(AudioParameters, GetPacketSize) {
  49   EXPECT_EQ(100, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  50                                  CHANNEL_LAYOUT_MONO, 1000,  8, 100)
  51                                  .GetPacketSize());
  52   EXPECT_EQ(200, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  53                                  CHANNEL_LAYOUT_MONO, 1000,  16, 100)
  54                                  .GetPacketSize());
  55   EXPECT_EQ(200, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  56                                  CHANNEL_LAYOUT_STEREO, 1000,  8, 100)
  57                                  .GetPacketSize());
  58   EXPECT_EQ(200, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  59                                  CHANNEL_LAYOUT_MONO, 1000,  8, 200)
  60                                  .GetPacketSize());
  61   EXPECT_EQ(800, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  62                                  CHANNEL_LAYOUT_STEREO, 1000,  16, 200)
  63                                  .GetPacketSize());
  64 }
  65
  66 TEST(AudioParameters, GetBytesPerSecond) {
  67   EXPECT_EQ(0, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  68                                CHANNEL_LAYOUT_NONE, 0, 0, 0)
  69                                .GetBytesPerSecond());
  70   EXPECT_EQ(0, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  71                                CHANNEL_LAYOUT_STEREO, 0, 0, 0)
  72                                .GetBytesPerSecond());
  73   EXPECT_EQ(0, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  74                                CHANNEL_LAYOUT_NONE, 100, 0, 0)
  75                                .GetBytesPerSecond());
  76   EXPECT_EQ(0, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  77                                CHANNEL_LAYOUT_NONE, 0, 8, 0)
  78                                .GetBytesPerSecond());
  79   EXPECT_EQ(200, AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
  80                                  CHANNEL_LAYOUT_STEREO, 100, 8, 0)
  81                                  .GetBytesPerSecond());
  82 }
  83
  84 TEST(AudioParameters, Compare) {
  85   AudioParameters values[] = {
  86     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  87                     1000,  8, 100),
  88     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  89                     1000,  8, 200),
  90     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  91                     1000, 16, 100),
  92     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  93                     1000, 16, 200),
  94     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  95                     2000,  8, 100),
  96     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  97                     2000,  8, 200),
  98     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
  99                     2000, 16, 100),
 100     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
 101                     2000, 16, 200),
 102
 103     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 104                     1000,  8, 100),
 105     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 106                     1000,  8, 200),
 107     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 108                     1000, 16, 100),
 109     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 110                     1000, 16, 200),
 111     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 112                     2000,  8, 100),
 113     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 114                     2000,  8, 200),
 115     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 116                     2000, 16, 100),
 117     AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
 118                     2000, 16, 200),
 119
 120     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 121                     1000,  8, 100),
 122     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 123                     1000,  8, 200),
 124     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 125                     1000, 16, 100),
 126     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 127                     1000, 16, 200),
 128     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 129                     2000,  8, 100),
 130     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 131                     2000,  8, 200),
 132     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 133                     2000, 16, 100),
 134     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO,
 135                     2000, 16, 200),
 136
 137     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 138                     CHANNEL_LAYOUT_STEREO, 1000,  8, 100),
 139     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 140                     CHANNEL_LAYOUT_STEREO, 1000,  8, 200),
 141     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 142                     CHANNEL_LAYOUT_STEREO, 1000, 16, 100),
 143     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 144                     CHANNEL_LAYOUT_STEREO, 1000, 16, 200),
 145     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 146                     CHANNEL_LAYOUT_STEREO, 2000,  8, 100),
 147     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 148                     CHANNEL_LAYOUT_STEREO, 2000,  8, 200),
 149     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 150                     CHANNEL_LAYOUT_STEREO, 2000, 16, 100),
 151     AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 152                     CHANNEL_LAYOUT_STEREO, 2000, 16, 200),
 153   };
 154
 155   AudioParameters::Compare target;
 156   for (size_t i = 0; i < arraysize(values); ++i) {
 157     for (size_t j = 0; j < arraysize(values); ++j) {
 158       SCOPED_TRACE("i=" + base::IntToString(i) + " j=" + base::IntToString(j));
 159       EXPECT_EQ(i < j, target(values[i], values[j]));
 160     }
 161
 162     // Verify that a value is never less than itself.
 163     EXPECT_FALSE(target(values[i], values[i]));
 164   }
 165 }