1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "testing/gtest/include/gtest/gtest.h"
#include "webrtc/common_audio/resampler/include/resampler.h"
// TODO(andrew): this is a work-in-progress. Many more tests are needed.
namespace webrtc {
namespace {
const int kNumChannels[] = {1, 2};
const size_t kNumChannelsSize = sizeof(kNumChannels) / sizeof(*kNumChannels);
// Rates we must support.
const int kMaxRate = 96000;
const int kRates[] = {
8000,
16000,
32000,
44000,
48000,
kMaxRate
};
const size_t kRatesSize = sizeof(kRates) / sizeof(*kRates);
const int kMaxChannels = 2;
const size_t kDataSize = static_cast<size_t> (kMaxChannels * kMaxRate / 100);
// TODO(andrew): should we be supporting these combinations?
bool ValidRates(int in_rate, int out_rate) {
// Not the most compact notation, for clarity.
if ((in_rate == 44000 && (out_rate == 48000 || out_rate == 96000)) ||
(out_rate == 44000 && (in_rate == 48000 || in_rate == 96000))) {
return false;
}
return true;
}
class ResamplerTest : public testing::Test {
protected:
ResamplerTest();
virtual void SetUp();
virtual void TearDown();
Resampler rs_;
int16_t data_in_[kDataSize];
int16_t data_out_[kDataSize];
};
ResamplerTest::ResamplerTest() {}
void ResamplerTest::SetUp() {
// Initialize input data with anything. The tests are content independent.
memset(data_in_, 1, sizeof(data_in_));
}
void ResamplerTest::TearDown() {}
TEST_F(ResamplerTest, Reset) {
// The only failure mode for the constructor is if Reset() fails. For the
// time being then (until an Init function is added), we rely on Reset()
// to test the constructor.
// Check that all required combinations are supported.
for (size_t i = 0; i < kRatesSize; ++i) {
for (size_t j = 0; j < kRatesSize; ++j) {
for (size_t k = 0; k < kNumChannelsSize; ++k) {
std::ostringstream ss;
ss << "Input rate: " << kRates[i] << ", output rate: " << kRates[j]
<< ", channels: " << kNumChannels[k];
SCOPED_TRACE(ss.str());
if (ValidRates(kRates[i], kRates[j]))
EXPECT_EQ(0, rs_.Reset(kRates[i], kRates[j], kNumChannels[k]));
else
EXPECT_EQ(-1, rs_.Reset(kRates[i], kRates[j], kNumChannels[k]));
}
}
}
}
// TODO(tlegrand): Replace code inside the two tests below with a function
// with number of channels and ResamplerType as input.
TEST_F(ResamplerTest, Mono) {
const int kChannels = 1;
for (size_t i = 0; i < kRatesSize; ++i) {
for (size_t j = 0; j < kRatesSize; ++j) {
std::ostringstream ss;
ss << "Input rate: " << kRates[i] << ", output rate: " << kRates[j];
SCOPED_TRACE(ss.str());
if (ValidRates(kRates[i], kRates[j])) {
size_t in_length = static_cast<size_t>(kRates[i] / 100);
size_t out_length = 0;
EXPECT_EQ(0, rs_.Reset(kRates[i], kRates[j], kChannels));
EXPECT_EQ(0, rs_.Push(data_in_, in_length, data_out_, kDataSize,
out_length));
EXPECT_EQ(static_cast<size_t>(kRates[j] / 100), out_length);
} else {
EXPECT_EQ(-1, rs_.Reset(kRates[i], kRates[j], kChannels));
}
}
}
}
TEST_F(ResamplerTest, Stereo) {
const int kChannels = 2;
for (size_t i = 0; i < kRatesSize; ++i) {
for (size_t j = 0; j < kRatesSize; ++j) {
std::ostringstream ss;
ss << "Input rate: " << kRates[i] << ", output rate: " << kRates[j];
SCOPED_TRACE(ss.str());
if (ValidRates(kRates[i], kRates[j])) {
size_t in_length = static_cast<size_t>(kChannels * kRates[i] / 100);
size_t out_length = 0;
EXPECT_EQ(0, rs_.Reset(kRates[i], kRates[j],
kChannels));
EXPECT_EQ(0, rs_.Push(data_in_, in_length, data_out_, kDataSize,
out_length));
EXPECT_EQ(static_cast<size_t>(kChannels * kRates[j] / 100), out_length);
} else {
EXPECT_EQ(-1, rs_.Reset(kRates[i], kRates[j],
kChannels));
}
}
}
}
} // namespace
} // namespace webrtc
|
