1ccd8b4281
The macro is defined as
#define WEBRTC_SPL_MUL_16_16_RSFT(a, b, c) \
(WEBRTC_SPL_MUL_16_16(a, b) >> (c))
where the latter macro is in C defined as
#define WEBRTC_SPL_MUL_16_16(a, b) \
((int32_t) (((int16_t)(a)) * ((int16_t)(b))))
(For definitions on ARMv7 and MIPS, see common_audio/signal_processing/include/spl_inl_{armv7,mips}.h)
The replacement consists of
- avoiding casts to int16_t if inputs already are int16_t
- adding explicit cast to <type> if result is assigned to <type> (other than int or int32_t)
- minor cleanups like remove of unnecessary parentheses and style changes
BUG=3348, 3353
TESTED=locally on Linux for both fixed and floating point and trybots
R=kwiberg@webrtc.org
Review URL: https://webrtc-codereview.appspot.com/49499004
Cr-Commit-Position: refs/heads/master@{#8853}
100 lines
3.1 KiB
C
100 lines
3.1 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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int16_t vector_length,
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int16_t right_shifts)
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{
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int 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, int16_t vector_length,
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int16_t right_shifts)
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{
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int 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, int16_t vector_length,
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int16_t right_shifts)
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{
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int 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, int vector_length)
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{
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int16_t *inPtr;
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int16_t *outPtr;
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int i;
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inPtr = in;
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outPtr = out;
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for (i = 0; i < vector_length; i++)
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{
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(*outPtr++) += (int16_t)((WEBRTC_SPL_MUL_16_16((*inPtr++), gain)
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+ (int32_t)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, int vector_length)
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{
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int16_t *inPtr;
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int16_t *outPtr;
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int i;
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inPtr = in;
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outPtr = out;
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for (i = 0; i < vector_length; i++)
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{
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(*outPtr++) = (int16_t)((WEBRTC_SPL_MUL_16_16((*inPtr++), gain)
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+ (int32_t)add_constant) >> right_shifts);
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}
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}
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