| /* |
| * 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. |
| */ |
| |
| #include "webrtc/modules/audio_coding/neteq/audio_multi_vector.h" |
| |
| #include <assert.h> |
| #include <stdlib.h> |
| |
| #include <string> |
| |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "webrtc/typedefs.h" |
| |
| namespace webrtc { |
| |
| // This is a value-parameterized test. The test cases are instantiated with |
| // different values for the test parameter, which is used to determine the |
| // number of channels in the AudioMultiBuffer. Note that it is not possible |
| // to combine typed testing with value-parameterized testing, and since the |
| // tests for AudioVector already covers a number of different type parameters, |
| // this test focuses on testing different number of channels, and keeping the |
| // value type constant. |
| |
| class AudioMultiVectorTest : public ::testing::TestWithParam<size_t> { |
| protected: |
| AudioMultiVectorTest() |
| : num_channels_(GetParam()), // Get the test parameter. |
| interleaved_length_(num_channels_ * array_length()) { |
| array_interleaved_ = new int16_t[num_channels_ * array_length()]; |
| } |
| |
| ~AudioMultiVectorTest() { |
| delete [] array_interleaved_; |
| } |
| |
| virtual void SetUp() { |
| // Populate test arrays. |
| for (size_t i = 0; i < array_length(); ++i) { |
| array_[i] = static_cast<int16_t>(i); |
| } |
| int16_t* ptr = array_interleaved_; |
| // Write 100, 101, 102, ... for first channel. |
| // Write 200, 201, 202, ... for second channel. |
| // And so on. |
| for (size_t i = 0; i < array_length(); ++i) { |
| for (size_t j = 1; j <= num_channels_; ++j) { |
| *ptr = j * 100 + i; |
| ++ptr; |
| } |
| } |
| } |
| |
| size_t array_length() const { |
| return sizeof(array_) / sizeof(array_[0]); |
| } |
| |
| const size_t num_channels_; |
| size_t interleaved_length_; |
| int16_t array_[10]; |
| int16_t* array_interleaved_; |
| }; |
| |
| // Create and destroy AudioMultiVector objects, both empty and with a predefined |
| // length. |
| TEST_P(AudioMultiVectorTest, CreateAndDestroy) { |
| AudioMultiVector vec1(num_channels_); |
| EXPECT_TRUE(vec1.Empty()); |
| EXPECT_EQ(num_channels_, vec1.Channels()); |
| EXPECT_EQ(0u, vec1.Size()); |
| |
| size_t initial_size = 17; |
| AudioMultiVector vec2(num_channels_, initial_size); |
| EXPECT_FALSE(vec2.Empty()); |
| EXPECT_EQ(num_channels_, vec2.Channels()); |
| EXPECT_EQ(initial_size, vec2.Size()); |
| } |
| |
| // Test the subscript operator [] for getting and setting. |
| TEST_P(AudioMultiVectorTest, SubscriptOperator) { |
| AudioMultiVector vec(num_channels_, array_length()); |
| for (size_t channel = 0; channel < num_channels_; ++channel) { |
| for (size_t i = 0; i < array_length(); ++i) { |
| vec[channel][i] = static_cast<int16_t>(i); |
| // Make sure to use the const version. |
| const AudioVector& audio_vec = vec[channel]; |
| EXPECT_EQ(static_cast<int16_t>(i), audio_vec[i]); |
| } |
| } |
| } |
| |
| // Test the PushBackInterleaved method and the CopyFrom method. The Clear |
| // method is also invoked. |
| TEST_P(AudioMultiVectorTest, PushBackInterleavedAndCopy) { |
| AudioMultiVector vec(num_channels_); |
| vec.PushBackInterleaved(array_interleaved_, interleaved_length_); |
| AudioMultiVector vec_copy(num_channels_); |
| vec.CopyTo(&vec_copy); // Copy from |vec| to |vec_copy|. |
| ASSERT_EQ(num_channels_, vec.Channels()); |
| ASSERT_EQ(array_length(), vec.Size()); |
| ASSERT_EQ(num_channels_, vec_copy.Channels()); |
| ASSERT_EQ(array_length(), vec_copy.Size()); |
| for (size_t channel = 0; channel < vec.Channels(); ++channel) { |
| for (size_t i = 0; i < array_length(); ++i) { |
| EXPECT_EQ(static_cast<int16_t>((channel + 1) * 100 + i), vec[channel][i]); |
| EXPECT_EQ(vec[channel][i], vec_copy[channel][i]); |
| } |
| } |
| |
| // Clear |vec| and verify that it is empty. |
| vec.Clear(); |
| EXPECT_TRUE(vec.Empty()); |
| |
| // Now copy the empty vector and verify that the copy becomes empty too. |
| vec.CopyTo(&vec_copy); |
| EXPECT_TRUE(vec_copy.Empty()); |
| } |
| |
| // Try to copy to a NULL pointer. Nothing should happen. |
| TEST_P(AudioMultiVectorTest, CopyToNull) { |
| AudioMultiVector vec(num_channels_); |
| AudioMultiVector* vec_copy = NULL; |
| vec.PushBackInterleaved(array_interleaved_, interleaved_length_); |
| vec.CopyTo(vec_copy); |
| } |
| |
| // Test the PushBack method with another AudioMultiVector as input argument. |
| TEST_P(AudioMultiVectorTest, PushBackVector) { |
| AudioMultiVector vec1(num_channels_, array_length()); |
| AudioMultiVector vec2(num_channels_, array_length()); |
| // Set the first vector to [0, 1, ..., array_length() - 1] + |
| // 100 * channel_number. |
| // Set the second vector to [array_length(), array_length() + 1, ..., |
| // 2 * array_length() - 1] + 100 * channel_number. |
| for (size_t channel = 0; channel < num_channels_; ++channel) { |
| for (size_t i = 0; i < array_length(); ++i) { |
| vec1[channel][i] = static_cast<int16_t>(i + 100 * channel); |
| vec2[channel][i] = |
| static_cast<int16_t>(i + 100 * channel + array_length()); |
| } |
| } |
| // Append vec2 to the back of vec1. |
| vec1.PushBack(vec2); |
| ASSERT_EQ(2u * array_length(), vec1.Size()); |
| for (size_t channel = 0; channel < num_channels_; ++channel) { |
| for (size_t i = 0; i < 2 * array_length(); ++i) { |
| EXPECT_EQ(static_cast<int16_t>(i + 100 * channel), vec1[channel][i]); |
| } |
| } |
| } |
| |
| // Test the PushBackFromIndex method. |
| TEST_P(AudioMultiVectorTest, PushBackFromIndex) { |
| AudioMultiVector vec1(num_channels_); |
| vec1.PushBackInterleaved(array_interleaved_, interleaved_length_); |
| AudioMultiVector vec2(num_channels_); |
| |
| // Append vec1 to the back of vec2 (which is empty). Read vec1 from the second |
| // last element. |
| vec2.PushBackFromIndex(vec1, array_length() - 2); |
| ASSERT_EQ(2u, vec2.Size()); |
| for (size_t channel = 0; channel < num_channels_; ++channel) { |
| for (size_t i = 0; i < 2; ++i) { |
| EXPECT_EQ(array_interleaved_[channel + num_channels_ * |
| (array_length() - 2 + i)], vec2[channel][i]); |
| } |
| } |
| } |
| |
| // Starts with pushing some values to the vector, then test the Zeros method. |
| TEST_P(AudioMultiVectorTest, Zeros) { |
| AudioMultiVector vec(num_channels_); |
| vec.PushBackInterleaved(array_interleaved_, interleaved_length_); |
| vec.Zeros(2 * array_length()); |
| ASSERT_EQ(num_channels_, vec.Channels()); |
| ASSERT_EQ(2u * array_length(), vec.Size()); |
| for (size_t channel = 0; channel < num_channels_; ++channel) { |
| for (size_t i = 0; i < 2 * array_length(); ++i) { |
| EXPECT_EQ(0, vec[channel][i]); |
| } |
| } |
| } |
| |
| // Test the ReadInterleaved method |
| TEST_P(AudioMultiVectorTest, ReadInterleaved) { |
| AudioMultiVector vec(num_channels_); |
| vec.PushBackInterleaved(array_interleaved_, interleaved_length_); |
| int16_t* output = new int16_t[interleaved_length_]; |
| // Read 5 samples. |
| size_t read_samples = 5; |
| EXPECT_EQ(num_channels_ * read_samples, |
| vec.ReadInterleaved(read_samples, output)); |
| EXPECT_EQ(0, |
| memcmp(array_interleaved_, output, read_samples * sizeof(int16_t))); |
| |
| // Read too many samples. Expect to get all samples from the vector. |
| EXPECT_EQ(interleaved_length_, |
| vec.ReadInterleaved(array_length() + 1, output)); |
| EXPECT_EQ(0, |
| memcmp(array_interleaved_, output, read_samples * sizeof(int16_t))); |
| |
| delete [] output; |
| } |
| |
| // Test the PopFront method. |
| TEST_P(AudioMultiVectorTest, PopFront) { |
| AudioMultiVector vec(num_channels_); |
| vec.PushBackInterleaved(array_interleaved_, interleaved_length_); |
| vec.PopFront(1); // Remove one element from each channel. |
| ASSERT_EQ(array_length() - 1u, vec.Size()); |
| // Let |ptr| point to the second element of the first channel in the |
| // interleaved array. |
| int16_t* ptr = &array_interleaved_[num_channels_]; |
| for (size_t i = 0; i < array_length() - 1; ++i) { |
| for (size_t channel = 0; channel < num_channels_; ++channel) { |
| EXPECT_EQ(*ptr, vec[channel][i]); |
| ++ptr; |
| } |
| } |
| vec.PopFront(array_length()); // Remove more elements than vector size. |
| EXPECT_EQ(0u, vec.Size()); |
| } |
| |
| // Test the PopBack method. |
| TEST_P(AudioMultiVectorTest, PopBack) { |
| AudioMultiVector vec(num_channels_); |
| vec.PushBackInterleaved(array_interleaved_, interleaved_length_); |
| vec.PopBack(1); // Remove one element from each channel. |
| ASSERT_EQ(array_length() - 1u, vec.Size()); |
| // Let |ptr| point to the first element of the first channel in the |
| // interleaved array. |
| int16_t* ptr = array_interleaved_; |
| for (size_t i = 0; i < array_length() - 1; ++i) { |
| for (size_t channel = 0; channel < num_channels_; ++channel) { |
| EXPECT_EQ(*ptr, vec[channel][i]); |
| ++ptr; |
| } |
| } |
| vec.PopBack(array_length()); // Remove more elements than vector size. |
| EXPECT_EQ(0u, vec.Size()); |
| } |
| |
| // Test the AssertSize method. |
| TEST_P(AudioMultiVectorTest, AssertSize) { |
| AudioMultiVector vec(num_channels_, array_length()); |
| EXPECT_EQ(array_length(), vec.Size()); |
| // Start with asserting with smaller sizes than already allocated. |
| vec.AssertSize(0); |
| vec.AssertSize(array_length() - 1); |
| // Nothing should have changed. |
| EXPECT_EQ(array_length(), vec.Size()); |
| // Assert with one element longer than already allocated. |
| vec.AssertSize(array_length() + 1); |
| // Expect vector to have grown. |
| EXPECT_EQ(array_length() + 1, vec.Size()); |
| // Also check the individual AudioVectors. |
| for (size_t channel = 0; channel < vec.Channels(); ++channel) { |
| EXPECT_EQ(array_length() + 1u, vec[channel].Size()); |
| } |
| } |
| |
| // Test the PushBack method with another AudioMultiVector as input argument. |
| TEST_P(AudioMultiVectorTest, OverwriteAt) { |
| AudioMultiVector vec1(num_channels_); |
| vec1.PushBackInterleaved(array_interleaved_, interleaved_length_); |
| AudioMultiVector vec2(num_channels_); |
| vec2.Zeros(3); // 3 zeros in each channel. |
| // Overwrite vec2 at position 5. |
| vec1.OverwriteAt(vec2, 3, 5); |
| // Verify result. |
| // Length remains the same. |
| ASSERT_EQ(array_length(), vec1.Size()); |
| int16_t* ptr = array_interleaved_; |
| for (size_t i = 0; i < array_length() - 1; ++i) { |
| for (size_t channel = 0; channel < num_channels_; ++channel) { |
| if (i >= 5 && i <= 7) { |
| // Elements 5, 6, 7 should have been replaced with zeros. |
| EXPECT_EQ(0, vec1[channel][i]); |
| } else { |
| EXPECT_EQ(*ptr, vec1[channel][i]); |
| } |
| ++ptr; |
| } |
| } |
| } |
| |
| // Test the CopyChannel method, when the test is instantiated with at least two |
| // channels. |
| TEST_P(AudioMultiVectorTest, CopyChannel) { |
| if (num_channels_ < 2) |
| return; |
| |
| AudioMultiVector vec(num_channels_); |
| vec.PushBackInterleaved(array_interleaved_, interleaved_length_); |
| // Create a reference copy. |
| AudioMultiVector ref(num_channels_); |
| ref.PushBack(vec); |
| // Copy from first to last channel. |
| vec.CopyChannel(0, num_channels_ - 1); |
| // Verify that the first and last channels are identical; the others should |
| // be left untouched. |
| for (size_t i = 0; i < array_length(); ++i) { |
| // Verify that all but the last channel are untouched. |
| for (size_t channel = 0; channel < num_channels_ - 1; ++channel) { |
| EXPECT_EQ(ref[channel][i], vec[channel][i]); |
| } |
| // Verify that the last and the first channels are identical. |
| EXPECT_EQ(vec[0][i], vec[num_channels_ - 1][i]); |
| } |
| } |
| |
| INSTANTIATE_TEST_CASE_P(TestNumChannels, |
| AudioMultiVectorTest, |
| ::testing::Values(static_cast<size_t>(1), |
| static_cast<size_t>(2), |
| static_cast<size_t>(5))); |
| } // namespace webrtc |