140 lines
4.4 KiB
C++
140 lines
4.4 KiB
C++
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "testing/gtest/include/gtest/gtest.h"
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#include "webrtc/common_audio/resampler/include/resampler.h"
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// TODO(andrew): this is a work-in-progress. Many more tests are needed.
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namespace webrtc {
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namespace {
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const int kNumChannels[] = {1, 2};
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const size_t kNumChannelsSize = sizeof(kNumChannels) / sizeof(*kNumChannels);
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// Rates we must support.
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const int kMaxRate = 96000;
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const int kRates[] = {
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8000,
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16000,
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32000,
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44000,
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48000,
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kMaxRate
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};
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const size_t kRatesSize = sizeof(kRates) / sizeof(*kRates);
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const int kMaxChannels = 2;
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const size_t kDataSize = static_cast<size_t> (kMaxChannels * kMaxRate / 100);
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// TODO(andrew): should we be supporting these combinations?
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bool ValidRates(int in_rate, int out_rate) {
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// Not the most compact notation, for clarity.
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if ((in_rate == 44000 && (out_rate == 48000 || out_rate == 96000)) ||
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(out_rate == 44000 && (in_rate == 48000 || in_rate == 96000))) {
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return false;
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}
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return true;
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}
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class ResamplerTest : public testing::Test {
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protected:
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ResamplerTest();
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virtual void SetUp();
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virtual void TearDown();
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Resampler rs_;
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int16_t data_in_[kDataSize];
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int16_t data_out_[kDataSize];
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};
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ResamplerTest::ResamplerTest() {}
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void ResamplerTest::SetUp() {
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// Initialize input data with anything. The tests are content independent.
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memset(data_in_, 1, sizeof(data_in_));
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}
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void ResamplerTest::TearDown() {}
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TEST_F(ResamplerTest, Reset) {
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// The only failure mode for the constructor is if Reset() fails. For the
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// time being then (until an Init function is added), we rely on Reset()
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// to test the constructor.
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// Check that all required combinations are supported.
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for (size_t i = 0; i < kRatesSize; ++i) {
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for (size_t j = 0; j < kRatesSize; ++j) {
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for (size_t k = 0; k < kNumChannelsSize; ++k) {
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std::ostringstream ss;
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ss << "Input rate: " << kRates[i] << ", output rate: " << kRates[j]
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<< ", channels: " << kNumChannels[k];
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SCOPED_TRACE(ss.str());
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if (ValidRates(kRates[i], kRates[j]))
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EXPECT_EQ(0, rs_.Reset(kRates[i], kRates[j], kNumChannels[k]));
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else
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EXPECT_EQ(-1, rs_.Reset(kRates[i], kRates[j], kNumChannels[k]));
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}
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}
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}
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}
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// TODO(tlegrand): Replace code inside the two tests below with a function
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// with number of channels and ResamplerType as input.
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TEST_F(ResamplerTest, Mono) {
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const int kChannels = 1;
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for (size_t i = 0; i < kRatesSize; ++i) {
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for (size_t j = 0; j < kRatesSize; ++j) {
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std::ostringstream ss;
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ss << "Input rate: " << kRates[i] << ", output rate: " << kRates[j];
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SCOPED_TRACE(ss.str());
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if (ValidRates(kRates[i], kRates[j])) {
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size_t in_length = static_cast<size_t>(kRates[i] / 100);
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size_t out_length = 0;
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EXPECT_EQ(0, rs_.Reset(kRates[i], kRates[j], kChannels));
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EXPECT_EQ(0, rs_.Push(data_in_, in_length, data_out_, kDataSize,
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out_length));
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EXPECT_EQ(static_cast<size_t>(kRates[j] / 100), out_length);
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} else {
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EXPECT_EQ(-1, rs_.Reset(kRates[i], kRates[j], kChannels));
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}
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}
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}
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}
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TEST_F(ResamplerTest, Stereo) {
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const int kChannels = 2;
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for (size_t i = 0; i < kRatesSize; ++i) {
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for (size_t j = 0; j < kRatesSize; ++j) {
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std::ostringstream ss;
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ss << "Input rate: " << kRates[i] << ", output rate: " << kRates[j];
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SCOPED_TRACE(ss.str());
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if (ValidRates(kRates[i], kRates[j])) {
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size_t in_length = static_cast<size_t>(kChannels * kRates[i] / 100);
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size_t out_length = 0;
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EXPECT_EQ(0, rs_.Reset(kRates[i], kRates[j],
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kChannels));
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EXPECT_EQ(0, rs_.Push(data_in_, in_length, data_out_, kDataSize,
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out_length));
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EXPECT_EQ(static_cast<size_t>(kChannels * kRates[j] / 100), out_length);
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} else {
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EXPECT_EQ(-1, rs_.Reset(kRates[i], kRates[j],
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kChannels));
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}
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}
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}
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}
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} // namespace
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} // namespace webrtc
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