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Diffstat (limited to 'third_party/libwebrtc/modules/audio_processing/test/echo_canceller_test_tools.h')
-rw-r--r-- | third_party/libwebrtc/modules/audio_processing/test/echo_canceller_test_tools.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_processing/test/echo_canceller_test_tools.h b/third_party/libwebrtc/modules/audio_processing/test/echo_canceller_test_tools.h new file mode 100644 index 0000000000..0d70cd39c6 --- /dev/null +++ b/third_party/libwebrtc/modules/audio_processing/test/echo_canceller_test_tools.h @@ -0,0 +1,47 @@ +/* + * Copyright (c) 2017 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. + */ + +#ifndef MODULES_AUDIO_PROCESSING_TEST_ECHO_CANCELLER_TEST_TOOLS_H_ +#define MODULES_AUDIO_PROCESSING_TEST_ECHO_CANCELLER_TEST_TOOLS_H_ + +#include <algorithm> +#include <vector> + +#include "api/array_view.h" +#include "rtc_base/random.h" + +namespace webrtc { + +// Randomizes the elements in a vector with values -32767.f:32767.f. +void RandomizeSampleVector(Random* random_generator, rtc::ArrayView<float> v); + +// Randomizes the elements in a vector with values -amplitude:amplitude. +void RandomizeSampleVector(Random* random_generator, + rtc::ArrayView<float> v, + float amplitude); + +// Class for delaying a signal a fixed number of samples. +template <typename T> +class DelayBuffer { + public: + explicit DelayBuffer(size_t delay) : buffer_(delay) {} + ~DelayBuffer() = default; + + // Produces a delayed signal copy of x. + void Delay(rtc::ArrayView<const T> x, rtc::ArrayView<T> x_delayed); + + private: + std::vector<T> buffer_; + size_t next_insert_index_ = 0; +}; + +} // namespace webrtc + +#endif // MODULES_AUDIO_PROCESSING_TEST_ECHO_CANCELLER_TEST_TOOLS_H_ |