d32c4389ac
common_audio/signal_processing: Remove macro WEBRTC_SPL_MEMCPY_W8 This macro is nothing but memcpy() and further used at one single place in webrtc, so it makes no sense to keep it. Replaced the operation where it is used. BUG=3348,3353 TESTED=locally on linux TBR=aluebs@webrtc.org Review URL: https://webrtc-codereview.appspot.com/18259004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@6963 4adac7df-926f-26a2-2b94-8c16560cd09d
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
/*
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* Copyright (c) 2011 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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#include "pcm16b.h"
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#include <stdlib.h>
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#ifdef WEBRTC_ARCH_BIG_ENDIAN
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#include <string.h>
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#endif
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#include "typedefs.h"
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#define HIGHEND 0xFF00
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#define LOWEND 0xFF
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/* Encoder with int16_t Output */
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int16_t WebRtcPcm16b_EncodeW16(const int16_t* speechIn16b,
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int16_t length_samples,
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int16_t* speechOut16b)
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{
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#ifdef WEBRTC_ARCH_BIG_ENDIAN
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memcpy(speechOut16b, speechIn16b, length_samples * sizeof(int16_t));
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#else
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int i;
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for (i = 0; i < length_samples; i++) {
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speechOut16b[i]=(((uint16_t)speechIn16b[i])>>8)|((((uint16_t)speechIn16b[i])<<8)&0xFF00);
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}
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#endif
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return length_samples << 1;
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}
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/* Encoder with char Output (old version) */
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int16_t WebRtcPcm16b_Encode(int16_t *speech16b,
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int16_t len,
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unsigned char *speech8b)
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{
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int16_t samples=len*2;
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int16_t pos;
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int16_t short1;
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int16_t short2;
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for (pos=0;pos<len;pos++) {
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short1=HIGHEND & speech16b[pos];
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short2=LOWEND & speech16b[pos];
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short1=short1>>8;
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speech8b[pos*2]=(unsigned char) short1;
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speech8b[pos*2+1]=(unsigned char) short2;
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}
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return(samples);
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}
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/* Decoder with int16_t Input instead of char when the int16_t Encoder is used */
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int16_t WebRtcPcm16b_DecodeW16(void *inst,
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int16_t *speechIn16b,
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int16_t length_bytes,
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int16_t *speechOut16b,
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int16_t* speechType)
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{
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#ifdef WEBRTC_ARCH_BIG_ENDIAN
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memcpy(speechOut16b, speechIn16b, length_bytes);
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#else
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int i;
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int samples = length_bytes >> 1;
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for (i=0;i<samples;i++) {
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speechOut16b[i]=(((uint16_t)speechIn16b[i])>>8)|(((uint16_t)(speechIn16b[i]&0xFF))<<8);
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}
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#endif
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*speechType=1;
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// Avoid warning.
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(void)(inst = NULL);
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return length_bytes >> 1;
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}
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/* "old" version of the decoder that uses char as input (not used in NetEq any more) */
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int16_t WebRtcPcm16b_Decode(unsigned char *speech8b,
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int16_t len,
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int16_t *speech16b)
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{
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int16_t samples=len>>1;
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int16_t pos;
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int16_t shortval;
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for (pos=0;pos<samples;pos++) {
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shortval=((unsigned short) speech8b[pos*2]);
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shortval=(shortval<<8)&HIGHEND;
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shortval=shortval|(((unsigned short) speech8b[pos*2+1])&LOWEND);
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speech16b[pos]=shortval;
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}
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return(samples);
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}
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