| /* |
| * Copyright (c) 2016 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 <algorithm> |
| |
| #include "webrtc/modules/audio_mixer/audio_frame_manipulator.h" |
| #include "webrtc/modules/include/module_common_types.h" |
| #include "webrtc/test/gtest.h" |
| |
| namespace webrtc { |
| namespace { |
| |
| void FillFrameWithConstants(size_t samples_per_channel, |
| size_t number_of_channels, |
| int16_t value, |
| AudioFrame* frame) { |
| frame->num_channels_ = number_of_channels; |
| frame->samples_per_channel_ = samples_per_channel; |
| int16_t* frame_data = frame->mutable_data(); |
| std::fill(frame_data, |
| frame_data + samples_per_channel * number_of_channels, value); |
| } |
| } // namespace |
| |
| TEST(AudioFrameManipulator, CompareForwardRampWithExpectedResultStereo) { |
| constexpr int kSamplesPerChannel = 5; |
| constexpr int kNumberOfChannels = 2; |
| |
| // Create a frame with values 5, 5, 5, ... and channels & samples as above. |
| AudioFrame frame; |
| FillFrameWithConstants(kSamplesPerChannel, kNumberOfChannels, 5, &frame); |
| |
| Ramp(0.0f, 1.0f, &frame); |
| |
| const int total_samples = kSamplesPerChannel * kNumberOfChannels; |
| const int16_t expected_result[total_samples] = {0, 0, 1, 1, 2, 2, 3, 3, 4, 4}; |
| const int16_t* frame_data = frame.data(); |
| EXPECT_TRUE( |
| std::equal(frame_data, frame_data + total_samples, expected_result)); |
| } |
| |
| TEST(AudioFrameManipulator, CompareBackwardRampWithExpectedResultMono) { |
| constexpr int kSamplesPerChannel = 5; |
| constexpr int kNumberOfChannels = 1; |
| |
| // Create a frame with values 5, 5, 5, ... and channels & samples as above. |
| AudioFrame frame; |
| FillFrameWithConstants(kSamplesPerChannel, kNumberOfChannels, 5, &frame); |
| |
| Ramp(1.0f, 0.0f, &frame); |
| |
| const int total_samples = kSamplesPerChannel * kNumberOfChannels; |
| const int16_t expected_result[total_samples] = {5, 4, 3, 2, 1}; |
| const int16_t* frame_data = frame.data(); |
| EXPECT_TRUE( |
| std::equal(frame_data, frame_data + total_samples, expected_result)); |
| } |
| |
| } // namespace webrtc |