audio_parameters_unittest.cc revision 868fa2fe829687343ffae624259930155e16dbd8 
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
10namespace media {
11
12TEST(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
30TEST(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
50TEST(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
68TEST(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
86TEST(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
169