media/base/audio_hardware_config_unittest.cc

   1 // Copyright (c) 2013 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 "build/build_config.h"
   6 #include "media/base/audio_hardware_config.h"
   7 #include "media/audio/audio_parameters.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9
  10 namespace media {
  11
  12 static const int kOutputBufferSize = 2048;
  13 static const int kOutputSampleRate = 48000;
  14 static const ChannelLayout kOutputChannelLayout = CHANNEL_LAYOUT_STEREO;
  15 static const int kInputSampleRate = 44100;
  16 static const ChannelLayout kInputChannelLayout = CHANNEL_LAYOUT_STEREO;
  17
  18 TEST(AudioHardwareConfig, Getters) {
  19   AudioParameters input_params(
  20       AudioParameters::AUDIO_PCM_LOW_LATENCY,
  21       kInputChannelLayout,
  22       kInputSampleRate,
  23       16,
  24       kOutputBufferSize);
  25
  26   AudioParameters output_params(
  27       AudioParameters::AUDIO_PCM_LOW_LATENCY,
  28       kOutputChannelLayout,
  29       kOutputSampleRate,
  30       16,
  31       kOutputBufferSize);
  32
  33   AudioHardwareConfig fake_config(input_params, output_params);
  34
  35   EXPECT_EQ(kOutputBufferSize, fake_config.GetOutputBufferSize());
  36   EXPECT_EQ(kOutputSampleRate, fake_config.GetOutputSampleRate());
  37   EXPECT_EQ(kInputSampleRate, fake_config.GetInputSampleRate());
  38   EXPECT_EQ(kInputChannelLayout, fake_config.GetInputChannelLayout());
  39 }
  40
  41 TEST(AudioHardwareConfig, Setters) {
  42   AudioParameters input_params(
  43       AudioParameters::AUDIO_PCM_LOW_LATENCY,
  44       kInputChannelLayout,
  45       kInputSampleRate,
  46       16,
  47       kOutputBufferSize);
  48
  49   AudioParameters output_params(
  50       AudioParameters::AUDIO_PCM_LOW_LATENCY,
  51       kOutputChannelLayout,
  52       kOutputSampleRate,
  53       16,
  54       kOutputBufferSize);
  55
  56   AudioHardwareConfig fake_config(input_params, output_params);
  57
  58   // Verify output parameters.
  59   const int kNewOutputBufferSize = kOutputBufferSize * 2;
  60   const int kNewOutputSampleRate = kOutputSampleRate * 2;
  61   EXPECT_NE(kNewOutputBufferSize, fake_config.GetOutputBufferSize());
  62   EXPECT_NE(kNewOutputSampleRate, fake_config.GetOutputSampleRate());
  63
  64   AudioParameters new_output_params(
  65       AudioParameters::AUDIO_PCM_LOW_LATENCY,
  66       kOutputChannelLayout,
  67       kNewOutputSampleRate,
  68       16,
  69       kNewOutputBufferSize);
  70   fake_config.UpdateOutputConfig(new_output_params);
  71   EXPECT_EQ(kNewOutputBufferSize, fake_config.GetOutputBufferSize());
  72   EXPECT_EQ(kNewOutputSampleRate, fake_config.GetOutputSampleRate());
  73
  74   // Verify input parameters.
  75   const int kNewInputSampleRate = kInputSampleRate * 2;
  76   const ChannelLayout kNewInputChannelLayout = CHANNEL_LAYOUT_MONO;
  77   EXPECT_NE(kNewInputSampleRate, fake_config.GetInputSampleRate());
  78   EXPECT_NE(kNewInputChannelLayout, fake_config.GetInputChannelLayout());
  79
  80   AudioParameters new_input_params(
  81       AudioParameters::AUDIO_PCM_LOW_LATENCY,
  82       kNewInputChannelLayout,
  83       kNewInputSampleRate,
  84       16,
  85       kOutputBufferSize);
  86   fake_config.UpdateInputConfig(new_input_params);
  87   EXPECT_EQ(kNewInputSampleRate, fake_config.GetInputSampleRate());
  88   EXPECT_EQ(kNewInputChannelLayout, fake_config.GetInputChannelLayout());
  89 }
  90
  91 TEST(AudioHardwareConfig, HighLatencyBufferSizes) {
  92   AudioParameters input_params(AudioParameters::AUDIO_PCM_LOW_LATENCY,
  93                                kInputChannelLayout,
  94                                kInputSampleRate,
  95                                16,
  96                                kOutputBufferSize);
  97   AudioParameters output_params(AudioParameters::AUDIO_PCM_LOW_LATENCY,
  98                                 kOutputChannelLayout,
  99                                 3200,
 100                                 16,
 101                                 32);
 102   AudioHardwareConfig fake_config(input_params, output_params);
 103
 104 #if defined(OS_WIN)
 105   for (int i = 6400; i <= 204800; i *= 2) {
 106     fake_config.UpdateOutputConfig(
 107         AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 108                         kOutputChannelLayout,
 109                         i,
 110                         16,
 111                         i / 100));
 112     EXPECT_EQ(2 * (i / 100), fake_config.GetHighLatencyBufferSize());
 113   }
 114 #else
 115   EXPECT_EQ(64, fake_config.GetHighLatencyBufferSize());
 116
 117   for (int i = 6400; i <= 204800; i *= 2) {
 118     fake_config.UpdateOutputConfig(
 119         AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
 120                         kOutputChannelLayout,
 121                         i,
 122                         16,
 123                         32));
 124     EXPECT_EQ(2 * (i / 100), fake_config.GetHighLatencyBufferSize());
 125   }
 126 #endif  // defined(OS_WIN)
 127 }
 128
 129 }  // namespace content