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// Unit tests for Normal class. 12 13#include "webrtc/modules/audio_coding/neteq/normal.h" 14 15#include <vector> 16 17#include "testing/gtest/include/gtest/gtest.h" 18#include "webrtc/common_audio/signal_processing/include/signal_processing_library.h" 19#include "webrtc/modules/audio_coding/neteq/audio_multi_vector.h" 20#include "webrtc/modules/audio_coding/neteq/background_noise.h" 21#include "webrtc/modules/audio_coding/neteq/expand.h" 22#include "webrtc/modules/audio_coding/neteq/mock/mock_decoder_database.h" 23#include "webrtc/modules/audio_coding/neteq/mock/mock_expand.h" 24#include "webrtc/modules/audio_coding/neteq/random_vector.h" 25#include "webrtc/modules/audio_coding/neteq/sync_buffer.h" 26#include "webrtc/system_wrappers/interface/scoped_ptr.h" 27 28using ::testing::_; 29 30namespace webrtc { 31 32TEST(Normal, CreateAndDestroy) { 33 MockDecoderDatabase db; 34 int fs = 8000; 35 size_t channels = 1; 36 BackgroundNoise bgn(channels); 37 SyncBuffer sync_buffer(1, 1000); 38 RandomVector random_vector; 39 Expand expand(&bgn, &sync_buffer, &random_vector, fs, channels); 40 Normal normal(fs, &db, bgn, &expand); 41 EXPECT_CALL(db, Die()); // Called when |db| goes out of scope. 42} 43 44TEST(Normal, AvoidDivideByZero) { 45 WebRtcSpl_Init(); 46 MockDecoderDatabase db; 47 int fs = 8000; 48 size_t channels = 1; 49 BackgroundNoise bgn(channels); 50 SyncBuffer sync_buffer(1, 1000); 51 RandomVector random_vector; 52 MockExpand expand(&bgn, &sync_buffer, &random_vector, fs, channels); 53 Normal normal(fs, &db, bgn, &expand); 54 55 int16_t input[1000] = {0}; 56 scoped_ptr<int16_t[]> mute_factor_array(new int16_t[channels]); 57 for (size_t i = 0; i < channels; ++i) { 58 mute_factor_array[i] = 16384; 59 } 60 AudioMultiVector output(channels); 61 62 // Zero input length. 63 EXPECT_EQ( 64 0, 65 normal.Process(input, 0, kModeExpand, mute_factor_array.get(), &output)); 66 EXPECT_EQ(0u, output.Size()); 67 68 // Try to make energy_length >> scaling = 0; 69 EXPECT_CALL(expand, SetParametersForNormalAfterExpand()); 70 EXPECT_CALL(expand, Process(_)); 71 EXPECT_CALL(expand, Reset()); 72 // If input_size_samples < 64, then energy_length in Normal::Process() will 73 // be equal to input_size_samples. Since the input is all zeros, decoded_max 74 // will be zero, and scaling will be >= 6. Thus, energy_length >> scaling = 0, 75 // and using this as a denominator would lead to problems. 76 int input_size_samples = 63; 77 EXPECT_EQ(input_size_samples, 78 normal.Process(input, 79 input_size_samples, 80 kModeExpand, 81 mute_factor_array.get(), 82 &output)); 83 84 EXPECT_CALL(db, Die()); // Called when |db| goes out of scope. 85 EXPECT_CALL(expand, Die()); // Called when |expand| goes out of scope. 86} 87 88TEST(Normal, InputLengthAndChannelsDoNotMatch) { 89 WebRtcSpl_Init(); 90 MockDecoderDatabase db; 91 int fs = 8000; 92 size_t channels = 2; 93 BackgroundNoise bgn(channels); 94 SyncBuffer sync_buffer(channels, 1000); 95 RandomVector random_vector; 96 MockExpand expand(&bgn, &sync_buffer, &random_vector, fs, channels); 97 Normal normal(fs, &db, bgn, &expand); 98 99 int16_t input[1000] = {0}; 100 scoped_ptr<int16_t[]> mute_factor_array(new int16_t[channels]); 101 for (size_t i = 0; i < channels; ++i) { 102 mute_factor_array[i] = 16384; 103 } 104 AudioMultiVector output(channels); 105 106 // Let the number of samples be one sample less than 80 samples per channel. 107 size_t input_len = 80 * channels - 1; 108 EXPECT_EQ( 109 0, 110 normal.Process( 111 input, input_len, kModeExpand, mute_factor_array.get(), &output)); 112 EXPECT_EQ(0u, output.Size()); 113 114 EXPECT_CALL(db, Die()); // Called when |db| goes out of scope. 115 EXPECT_CALL(expand, Die()); // Called when |expand| goes out of scope. 116} 117 118// TODO(hlundin): Write more tests. 119 120} // namespace webrtc 121