62 lines
1.8 KiB
C
62 lines
1.8 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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/******************************************************************
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iLBC Speech Coder ANSI-C Source Code
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WebRtcIlbcfix_SplitVq.c
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******************************************************************/
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#include "defines.h"
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#include "constants.h"
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#include "vq3.h"
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#include "vq4.h"
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/*----------------------------------------------------------------*
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* split vector quantization
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*---------------------------------------------------------------*/
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void WebRtcIlbcfix_SplitVq(
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WebRtc_Word16 *qX, /* (o) the quantized vector in Q13 */
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WebRtc_Word16 *index, /* (o) a vector of indexes for all vector
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codebooks in the split */
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WebRtc_Word16 *X, /* (i) the vector to quantize */
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WebRtc_Word16 *CB, /* (i) the quantizer codebook in Q13 */
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WebRtc_Word16 *dim, /* (i) the dimension of X and qX */
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WebRtc_Word16 *cbsize /* (i) the number of vectors in the codebook */
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) {
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WebRtc_Word16 *qXPtr, *indexPtr, *CBPtr, *XPtr;
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/* Quantize X with the 3 vectror quantization tables */
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qXPtr=qX;
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indexPtr=index;
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CBPtr=CB;
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XPtr=X;
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WebRtcIlbcfix_Vq3(qXPtr, indexPtr, CBPtr, XPtr, cbsize[0]);
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qXPtr+=3;
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indexPtr+=1;
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CBPtr+=(dim[0]*cbsize[0]);
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XPtr+=3;
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WebRtcIlbcfix_Vq3(qXPtr, indexPtr, CBPtr, XPtr, cbsize[1]);
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qXPtr+=3;
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indexPtr+=1;
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CBPtr+=(dim[1]*cbsize[1]);
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XPtr+=3;
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WebRtcIlbcfix_Vq4(qXPtr, indexPtr, CBPtr, XPtr, cbsize[2]);
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return;
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}
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