chromium/third_party/webrtc/modules/audio_processing/vad/pole_zero_filter.cc

/*
 *  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 "modules/audio_processing/vad/pole_zero_filter.h"

#include <string.h>

#include <algorithm>

namespace webrtc {

PoleZeroFilter* PoleZeroFilter::Create(const float* numerator_coefficients,
                                       size_t order_numerator,
                                       const float* denominator_coefficients,
                                       size_t order_denominator) { … }

PoleZeroFilter::PoleZeroFilter(const float* numerator_coefficients,
                               size_t order_numerator,
                               const float* denominator_coefficients,
                               size_t order_denominator)
    : … { … }

template <typename T>
static float FilterArPast(const T* past,
                          size_t order,
                          const float* coefficients) { … }

int PoleZeroFilter::Filter(const int16_t* in,
                           size_t num_input_samples,
                           float* output) { … }

}  // namespace webrtc