mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-12 21:30:45 +01:00
1bc995a1cb
Bug: webrtc:10548 Change-Id: I4241dfe7ba282270422f8f8e90a8e5a439d3031c Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/132787 Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org> Commit-Queue: Alessio Bazzica <alessiob@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27613}
90 lines
2.9 KiB
C
90 lines
2.9 KiB
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 iLBC specific functions
|
|
* WebRtcSpl_ReverseOrderMultArrayElements()
|
|
* WebRtcSpl_ElementwiseVectorMult()
|
|
* WebRtcSpl_AddVectorsAndShift()
|
|
* WebRtcSpl_AddAffineVectorToVector()
|
|
* WebRtcSpl_AffineTransformVector()
|
|
*
|
|
*/
|
|
|
|
#include "common_audio/signal_processing/include/signal_processing_library.h"
|
|
|
|
void WebRtcSpl_ReverseOrderMultArrayElements(int16_t *out, const int16_t *in,
|
|
const int16_t *win,
|
|
size_t vector_length,
|
|
int16_t right_shifts)
|
|
{
|
|
size_t i;
|
|
int16_t *outptr = out;
|
|
const int16_t *inptr = in;
|
|
const int16_t *winptr = win;
|
|
for (i = 0; i < vector_length; i++)
|
|
{
|
|
*outptr++ = (int16_t)((*inptr++ * *winptr--) >> right_shifts);
|
|
}
|
|
}
|
|
|
|
void WebRtcSpl_ElementwiseVectorMult(int16_t *out, const int16_t *in,
|
|
const int16_t *win, size_t vector_length,
|
|
int16_t right_shifts)
|
|
{
|
|
size_t i;
|
|
int16_t *outptr = out;
|
|
const int16_t *inptr = in;
|
|
const int16_t *winptr = win;
|
|
for (i = 0; i < vector_length; i++)
|
|
{
|
|
*outptr++ = (int16_t)((*inptr++ * *winptr++) >> right_shifts);
|
|
}
|
|
}
|
|
|
|
void WebRtcSpl_AddVectorsAndShift(int16_t *out, const int16_t *in1,
|
|
const int16_t *in2, size_t vector_length,
|
|
int16_t right_shifts)
|
|
{
|
|
size_t i;
|
|
int16_t *outptr = out;
|
|
const int16_t *in1ptr = in1;
|
|
const int16_t *in2ptr = in2;
|
|
for (i = vector_length; i > 0; i--)
|
|
{
|
|
(*outptr++) = (int16_t)(((*in1ptr++) + (*in2ptr++)) >> right_shifts);
|
|
}
|
|
}
|
|
|
|
void WebRtcSpl_AddAffineVectorToVector(int16_t *out, const int16_t *in,
|
|
int16_t gain, int32_t add_constant,
|
|
int16_t right_shifts,
|
|
size_t vector_length)
|
|
{
|
|
size_t i;
|
|
|
|
for (i = 0; i < vector_length; i++)
|
|
{
|
|
out[i] += (int16_t)((in[i] * gain + add_constant) >> right_shifts);
|
|
}
|
|
}
|
|
|
|
void WebRtcSpl_AffineTransformVector(int16_t *out, const int16_t *in,
|
|
int16_t gain, int32_t add_constant,
|
|
int16_t right_shifts, size_t vector_length)
|
|
{
|
|
size_t i;
|
|
|
|
for (i = 0; i < vector_length; i++)
|
|
{
|
|
out[i] = (int16_t)((in[i] * gain + add_constant) >> right_shifts);
|
|
}
|
|
}
|