dce40cf804
use of int16_t/uint16_t. This is the upshot of a recommendation by henrik.lundin and kwiberg on an original small change ( https://webrtc-codereview.appspot.com/42569004/#ps1 ) to stop using int16_t just because values could fit in it, and is similar in nature to a previous "mass change to use size_t more" ( https://webrtc-codereview.appspot.com/23129004/ ) which also needed to be split up for review but to land all at once, since, like adding "const", such changes tend to cause a lot of transitive effects. This was be reviewed and approved in pieces: https://codereview.webrtc.org/1224093003 https://codereview.webrtc.org/1224123002 https://codereview.webrtc.org/1224163002 https://codereview.webrtc.org/1225133003 https://codereview.webrtc.org/1225173002 https://codereview.webrtc.org/1227163003 https://codereview.webrtc.org/1227203003 https://codereview.webrtc.org/1227213002 https://codereview.webrtc.org/1227893002 https://codereview.webrtc.org/1228793004 https://codereview.webrtc.org/1228803003 https://codereview.webrtc.org/1228823002 https://codereview.webrtc.org/1228823003 https://codereview.webrtc.org/1228843002 https://codereview.webrtc.org/1230693002 https://codereview.webrtc.org/1231713002 The change is being landed as TBR to all the folks who reviewed the above. BUG=chromium:81439 TEST=none R=andrew@webrtc.org, pbos@webrtc.org TBR=aluebs, andrew, asapersson, henrika, hlundin, jan.skoglund, kwiberg, minyue, pbos, pthatcher Review URL: https://codereview.webrtc.org/1230503003 . Cr-Commit-Position: refs/heads/master@{#9768}
91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/*
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* This file contains implementations of the iLBC specific functions
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* WebRtcSpl_ReverseOrderMultArrayElements()
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* WebRtcSpl_ElementwiseVectorMult()
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* WebRtcSpl_AddVectorsAndShift()
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* WebRtcSpl_AddAffineVectorToVector()
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* WebRtcSpl_AffineTransformVector()
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*
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*/
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#include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
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void WebRtcSpl_ReverseOrderMultArrayElements(int16_t *out, const int16_t *in,
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const int16_t *win,
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size_t vector_length,
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int16_t right_shifts)
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{
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size_t i;
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int16_t *outptr = out;
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const int16_t *inptr = in;
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const int16_t *winptr = win;
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for (i = 0; i < vector_length; i++)
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{
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*outptr++ = (int16_t)((*inptr++ * *winptr--) >> right_shifts);
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}
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}
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void WebRtcSpl_ElementwiseVectorMult(int16_t *out, const int16_t *in,
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const int16_t *win, size_t vector_length,
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int16_t right_shifts)
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{
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size_t i;
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int16_t *outptr = out;
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const int16_t *inptr = in;
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const int16_t *winptr = win;
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for (i = 0; i < vector_length; i++)
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{
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*outptr++ = (int16_t)((*inptr++ * *winptr++) >> right_shifts);
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}
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}
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void WebRtcSpl_AddVectorsAndShift(int16_t *out, const int16_t *in1,
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const int16_t *in2, size_t vector_length,
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int16_t right_shifts)
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{
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size_t i;
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int16_t *outptr = out;
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const int16_t *in1ptr = in1;
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const int16_t *in2ptr = in2;
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for (i = vector_length; i > 0; i--)
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{
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(*outptr++) = (int16_t)(((*in1ptr++) + (*in2ptr++)) >> right_shifts);
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}
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}
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void WebRtcSpl_AddAffineVectorToVector(int16_t *out, int16_t *in,
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int16_t gain, int32_t add_constant,
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int16_t right_shifts,
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size_t vector_length)
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{
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size_t i;
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for (i = 0; i < vector_length; i++)
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{
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out[i] += (int16_t)((in[i] * gain + add_constant) >> right_shifts);
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}
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}
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void WebRtcSpl_AffineTransformVector(int16_t *out, int16_t *in,
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int16_t gain, int32_t add_constant,
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int16_t right_shifts, size_t vector_length)
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{
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size_t i;
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for (i = 0; i < vector_length; i++)
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{
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out[i] = (int16_t)((in[i] * gain + add_constant) >> right_shifts);
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}
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}
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