| /* |
| * Copyright (c) 2012 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. |
| */ |
| |
| // Unit tests for Accelerate and PreemptiveExpand classes. |
| |
| #include "webrtc/modules/audio_coding/neteq/accelerate.h" |
| #include "webrtc/modules/audio_coding/neteq/preemptive_expand.h" |
| |
| #include <map> |
| #include <memory> |
| |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "webrtc/base/checks.h" |
| #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h" |
| #include "webrtc/modules/audio_coding/neteq/background_noise.h" |
| #include "webrtc/modules/audio_coding/neteq/tools/input_audio_file.h" |
| #include "webrtc/test/testsupport/fileutils.h" |
| |
| namespace webrtc { |
| |
| namespace { |
| const size_t kNumChannels = 1; |
| } |
| |
| TEST(TimeStretch, CreateAndDestroy) { |
| const int kSampleRate = 8000; |
| const int kOverlapSamples = 5 * kSampleRate / 8000; |
| BackgroundNoise bgn(kNumChannels); |
| Accelerate accelerate(kSampleRate, kNumChannels, bgn); |
| PreemptiveExpand preemptive_expand( |
| kSampleRate, kNumChannels, bgn, kOverlapSamples); |
| } |
| |
| TEST(TimeStretch, CreateUsingFactory) { |
| const int kSampleRate = 8000; |
| const int kOverlapSamples = 5 * kSampleRate / 8000; |
| BackgroundNoise bgn(kNumChannels); |
| |
| AccelerateFactory accelerate_factory; |
| Accelerate* accelerate = |
| accelerate_factory.Create(kSampleRate, kNumChannels, bgn); |
| EXPECT_TRUE(accelerate != NULL); |
| delete accelerate; |
| |
| PreemptiveExpandFactory preemptive_expand_factory; |
| PreemptiveExpand* preemptive_expand = preemptive_expand_factory.Create( |
| kSampleRate, kNumChannels, bgn, kOverlapSamples); |
| EXPECT_TRUE(preemptive_expand != NULL); |
| delete preemptive_expand; |
| } |
| |
| class TimeStretchTest : public ::testing::Test { |
| protected: |
| TimeStretchTest() |
| : input_file_(new test::InputAudioFile( |
| test::ResourcePath("audio_coding/testfile32kHz", "pcm"))), |
| sample_rate_hz_(32000), |
| block_size_(30 * sample_rate_hz_ / 1000), // 30 ms |
| audio_(new int16_t[block_size_]), |
| background_noise_(kNumChannels) { |
| WebRtcSpl_Init(); |
| } |
| |
| const int16_t* Next30Ms() { |
| RTC_CHECK(input_file_->Read(block_size_, audio_.get())); |
| return audio_.get(); |
| } |
| |
| // Returns the total length change (in samples) that the accelerate operation |
| // resulted in during the run. |
| size_t TestAccelerate(size_t loops, bool fast_mode) { |
| Accelerate accelerate(sample_rate_hz_, kNumChannels, background_noise_); |
| size_t total_length_change = 0; |
| for (size_t i = 0; i < loops; ++i) { |
| AudioMultiVector output(kNumChannels); |
| size_t length_change; |
| UpdateReturnStats(accelerate.Process(Next30Ms(), block_size_, fast_mode, |
| &output, &length_change)); |
| total_length_change += length_change; |
| } |
| return total_length_change; |
| } |
| |
| void UpdateReturnStats(TimeStretch::ReturnCodes ret) { |
| switch (ret) { |
| case TimeStretch::kSuccess: |
| case TimeStretch::kSuccessLowEnergy: |
| case TimeStretch::kNoStretch: |
| ++return_stats_[ret]; |
| break; |
| case TimeStretch::kError: |
| FAIL() << "Process returned an error"; |
| } |
| } |
| |
| std::unique_ptr<test::InputAudioFile> input_file_; |
| const int sample_rate_hz_; |
| const size_t block_size_; |
| std::unique_ptr<int16_t[]> audio_; |
| std::map<TimeStretch::ReturnCodes, int> return_stats_; |
| BackgroundNoise background_noise_; |
| }; |
| |
| TEST_F(TimeStretchTest, Accelerate) { |
| // TestAccelerate returns the total length change in samples. |
| EXPECT_EQ(15268U, TestAccelerate(100, false)); |
| EXPECT_EQ(9, return_stats_[TimeStretch::kSuccess]); |
| EXPECT_EQ(58, return_stats_[TimeStretch::kSuccessLowEnergy]); |
| EXPECT_EQ(33, return_stats_[TimeStretch::kNoStretch]); |
| } |
| |
| TEST_F(TimeStretchTest, AccelerateFastMode) { |
| // TestAccelerate returns the total length change in samples. |
| EXPECT_EQ(21400U, TestAccelerate(100, true)); |
| EXPECT_EQ(31, return_stats_[TimeStretch::kSuccess]); |
| EXPECT_EQ(58, return_stats_[TimeStretch::kSuccessLowEnergy]); |
| EXPECT_EQ(11, return_stats_[TimeStretch::kNoStretch]); |
| } |
| |
| } // namespace webrtc |