1/*
2 *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
3 *
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.
9 */
10
11#include "webrtc/modules/audio_processing/vad/pitch_based_vad.h"
12
13#include <math.h>
14#include <stdio.h>
15
16#include <string>
17
18#include "testing/gtest/include/gtest/gtest.h"
19#include "webrtc/test/testsupport/fileutils.h"
20
21namespace webrtc {
22
23TEST(PitchBasedVadTest, VoicingProbabilityTest) {
24  std::string spectral_peak_file_name =
25      test::ResourcePath("audio_processing/agc/agc_spectral_peak", "dat");
26  FILE* spectral_peak_file = fopen(spectral_peak_file_name.c_str(), "rb");
27  ASSERT_TRUE(spectral_peak_file != NULL);
28
29  std::string pitch_gain_file_name =
30      test::ResourcePath("audio_processing/agc/agc_pitch_gain", "dat");
31  FILE* pitch_gain_file = fopen(pitch_gain_file_name.c_str(), "rb");
32  ASSERT_TRUE(pitch_gain_file != NULL);
33
34  std::string pitch_lag_file_name =
35      test::ResourcePath("audio_processing/agc/agc_pitch_lag", "dat");
36  FILE* pitch_lag_file = fopen(pitch_lag_file_name.c_str(), "rb");
37  ASSERT_TRUE(pitch_lag_file != NULL);
38
39  std::string voicing_prob_file_name =
40      test::ResourcePath("audio_processing/agc/agc_voicing_prob", "dat");
41  FILE* voicing_prob_file = fopen(voicing_prob_file_name.c_str(), "rb");
42  ASSERT_TRUE(voicing_prob_file != NULL);
43
44  PitchBasedVad vad_;
45
46  double reference_activity_probability;
47
48  AudioFeatures audio_features;
49  memset(&audio_features, 0, sizeof(audio_features));
50  audio_features.num_frames = 1;
51  while (fread(audio_features.spectral_peak,
52               sizeof(audio_features.spectral_peak[0]), 1,
53               spectral_peak_file) == 1u) {
54    double p;
55    ASSERT_EQ(1u, fread(audio_features.log_pitch_gain,
56                        sizeof(audio_features.log_pitch_gain[0]), 1,
57                        pitch_gain_file));
58    ASSERT_EQ(1u,
59              fread(audio_features.pitch_lag_hz,
60                    sizeof(audio_features.pitch_lag_hz[0]), 1, pitch_lag_file));
61    ASSERT_EQ(1u, fread(&reference_activity_probability,
62                        sizeof(reference_activity_probability), 1,
63                        voicing_prob_file));
64
65    p = 0.5;  // Initialize to the neutral value for combining probabilities.
66    EXPECT_EQ(0, vad_.VoicingProbability(audio_features, &p));
67    EXPECT_NEAR(p, reference_activity_probability, 0.01);
68  }
69
70  fclose(spectral_peak_file);
71  fclose(pitch_gain_file);
72  fclose(pitch_lag_file);
73}
74
75}  // namespace webrtc
76