2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
11 #include "webrtc/common_audio/vad/vad_unittest.h"
15 #include "testing/gtest/include/gtest/gtest.h"
17 #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
18 #include "webrtc/common_audio/vad/include/webrtc_vad.h"
19 #include "webrtc/typedefs.h"
23 void VadTest::SetUp() {}
25 void VadTest::TearDown() {}
27 // Returns true if the rate and frame length combination is valid.
28 bool VadTest::ValidRatesAndFrameLengths(int rate, int frame_length) {
30 if (frame_length == 80 || frame_length == 160 || frame_length == 240) {
34 } else if (rate == 16000) {
35 if (frame_length == 160 || frame_length == 320 || frame_length == 480) {
39 } else if (rate == 32000) {
40 if (frame_length == 320 || frame_length == 640 || frame_length == 960) {
44 } else if (rate == 48000) {
45 if (frame_length == 480 || frame_length == 960 || frame_length == 1440) {
56 TEST_F(VadTest, ApiTest) {
57 // This API test runs through the APIs for all possible valid and invalid
60 VadInst* handle = NULL;
61 int16_t zeros[kMaxFrameLength] = { 0 };
63 // Construct a speech signal that will trigger the VAD in all modes. It is
64 // known that (i * i) will wrap around, but that doesn't matter in this case.
65 int16_t speech[kMaxFrameLength];
66 for (int16_t i = 0; i < kMaxFrameLength; i++) {
70 // NULL instance tests
71 EXPECT_EQ(-1, WebRtcVad_Create(NULL));
72 EXPECT_EQ(-1, WebRtcVad_Init(NULL));
73 EXPECT_EQ(-1, WebRtcVad_set_mode(NULL, kModes[0]));
74 EXPECT_EQ(-1, WebRtcVad_Process(NULL, kRates[0], speech, kFrameLengths[0]));
77 ASSERT_EQ(0, WebRtcVad_Create(&handle));
79 // Not initialized tests
80 EXPECT_EQ(-1, WebRtcVad_Process(handle, kRates[0], speech, kFrameLengths[0]));
81 EXPECT_EQ(-1, WebRtcVad_set_mode(handle, kModes[0]));
83 // WebRtcVad_Init() test
84 ASSERT_EQ(0, WebRtcVad_Init(handle));
86 // WebRtcVad_set_mode() invalid modes tests. Tries smallest supported value
87 // minus one and largest supported value plus one.
88 EXPECT_EQ(-1, WebRtcVad_set_mode(handle,
89 WebRtcSpl_MinValueW32(kModes,
91 EXPECT_EQ(-1, WebRtcVad_set_mode(handle,
92 WebRtcSpl_MaxValueW32(kModes,
95 // WebRtcVad_Process() tests
96 // NULL speech pointer
97 EXPECT_EQ(-1, WebRtcVad_Process(handle, kRates[0], NULL, kFrameLengths[0]));
98 // Invalid sampling rate
99 EXPECT_EQ(-1, WebRtcVad_Process(handle, 9999, speech, kFrameLengths[0]));
100 // All zeros as input should work
101 EXPECT_EQ(0, WebRtcVad_Process(handle, kRates[0], zeros, kFrameLengths[0]));
102 for (size_t k = 0; k < kModesSize; k++) {
104 EXPECT_EQ(0, WebRtcVad_set_mode(handle, kModes[k]));
105 // Loop through sampling rate and frame length combinations
106 for (size_t i = 0; i < kRatesSize; i++) {
107 for (size_t j = 0; j < kFrameLengthsSize; j++) {
108 if (ValidRatesAndFrameLengths(kRates[i], kFrameLengths[j])) {
109 EXPECT_EQ(1, WebRtcVad_Process(handle,
114 EXPECT_EQ(-1, WebRtcVad_Process(handle,
123 WebRtcVad_Free(handle);
126 TEST_F(VadTest, ValidRatesFrameLengths) {
127 // This test verifies valid and invalid rate/frame_length combinations. We
128 // loop through some sampling rates and frame lengths from negative values to
129 // values larger than possible.
130 const int kNumRates = 12;
131 const int kRates[kNumRates] = {
132 -8000, -4000, 0, 4000, 8000, 8001, 15999, 16000, 32000, 48000, 48001, 96000
135 const int kNumFrameLengths = 13;
136 const int kFrameLengths[kNumFrameLengths] = {
137 -10, 0, 80, 81, 159, 160, 240, 320, 480, 640, 960, 1440, 2000
140 for (int i = 0; i < kNumRates; i++) {
141 for (int j = 0; j < kNumFrameLengths; j++) {
142 if (ValidRatesAndFrameLengths(kRates[i], kFrameLengths[j])) {
143 EXPECT_EQ(0, WebRtcVad_ValidRateAndFrameLength(kRates[i],
146 EXPECT_EQ(-1, WebRtcVad_ValidRateAndFrameLength(kRates[i],
153 // TODO(bjornv): Add a process test, run on file.