chromium/third_party/webrtc/common_audio/signal_processing/vector_scaling_operations.c

/*
 *  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.
 */


/*
 * This file contains implementations of the functions
 * WebRtcSpl_VectorBitShiftW16()
 * WebRtcSpl_VectorBitShiftW32()
 * WebRtcSpl_VectorBitShiftW32ToW16()
 * WebRtcSpl_ScaleVector()
 * WebRtcSpl_ScaleVectorWithSat()
 * WebRtcSpl_ScaleAndAddVectors()
 * WebRtcSpl_ScaleAndAddVectorsWithRoundC()
 */

#include "common_audio/signal_processing/include/signal_processing_library.h"

void WebRtcSpl_VectorBitShiftW16(int16_t *res, size_t length,
                                 const int16_t *in, int16_t right_shifts)
{ … }

void WebRtcSpl_VectorBitShiftW32(int32_t *out_vector,
                                 size_t vector_length,
                                 const int32_t *in_vector,
                                 int16_t right_shifts)
{ … }

void WebRtcSpl_VectorBitShiftW32ToW16(int16_t* out, size_t length,
                                      const int32_t* in, int right_shifts) { … }

void WebRtcSpl_ScaleVector(const int16_t *in_vector, int16_t *out_vector,
                           int16_t gain, size_t in_vector_length,
                           int16_t right_shifts)
{ … }

void WebRtcSpl_ScaleVectorWithSat(const int16_t *in_vector, int16_t *out_vector,
                                 int16_t gain, size_t in_vector_length,
                                 int16_t right_shifts)
{ … }

void WebRtcSpl_ScaleAndAddVectors(const int16_t *in1, int16_t gain1, int shift1,
                                  const int16_t *in2, int16_t gain2, int shift2,
                                  int16_t *out, size_t vector_length)
{ … }

// C version of WebRtcSpl_ScaleAndAddVectorsWithRound() for generic platforms.
int WebRtcSpl_ScaleAndAddVectorsWithRoundC(const int16_t* in_vector1,
                                           int16_t in_vector1_scale,
                                           const int16_t* in_vector2,
                                           int16_t in_vector2_scale,
                                           int right_shifts,
                                           int16_t* out_vector,
                                           size_t length) { … }