| /* |
| * Copyright 2018 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 "modules/audio_processing/include/audio_frame_view.h" |
| |
| #include "modules/audio_processing/audio_buffer.h" |
| #include "test/gtest.h" |
| |
| namespace webrtc { |
| TEST(AudioFrameTest, ConstructFromAudioBuffer) { |
| constexpr int kSampleRateHz = 48000; |
| constexpr int kNumChannels = 2; |
| constexpr float kFloatConstant = 1272.f; |
| constexpr float kIntConstant = 17252; |
| const webrtc::StreamConfig stream_config(kSampleRateHz, kNumChannels, false); |
| webrtc::AudioBuffer buffer( |
| stream_config.num_frames(), stream_config.num_channels(), |
| stream_config.num_frames(), stream_config.num_channels(), |
| stream_config.num_frames()); |
| |
| AudioFrameView<float> non_const_view( |
| buffer.channels_f(), buffer.num_channels(), buffer.num_frames()); |
| // Modification is allowed. |
| non_const_view.channel(0)[0] = kFloatConstant; |
| EXPECT_EQ(buffer.channels_f()[0][0], kFloatConstant); |
| |
| AudioFrameView<const float> const_view( |
| buffer.channels_f(), buffer.num_channels(), buffer.num_frames()); |
| // Modification is not allowed. |
| // const_view.channel(0)[0] = kFloatConstant; |
| |
| // Assignment is allowed. |
| AudioFrameView<const float> other_const_view = non_const_view; |
| static_cast<void>(other_const_view); |
| |
| // But not the other way. The following will fail: |
| // non_const_view = other_const_view; |
| |
| AudioFrameView<float> non_const_float_view( |
| buffer.channels_f(), buffer.num_channels(), buffer.num_frames()); |
| non_const_float_view.channel(0)[0] = kIntConstant; |
| EXPECT_EQ(buffer.channels_f()[0][0], kIntConstant); |
| } |
| } // namespace webrtc |