| /* |
| * Copyright (c) 2011 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. |
| */ |
| |
| /****************************************************************** |
| |
| iLBC Speech Coder ANSI-C Source Code |
| |
| WebRtcIlbcfix_SplitVq.c |
| |
| ******************************************************************/ |
| |
| #include "defines.h" |
| #include "constants.h" |
| #include "vq3.h" |
| #include "vq4.h" |
| |
| /*----------------------------------------------------------------* |
| * split vector quantization |
| *---------------------------------------------------------------*/ |
| |
| void WebRtcIlbcfix_SplitVq( |
| WebRtc_Word16 *qX, /* (o) the quantized vector in Q13 */ |
| WebRtc_Word16 *index, /* (o) a vector of indexes for all vector |
| codebooks in the split */ |
| WebRtc_Word16 *X, /* (i) the vector to quantize */ |
| WebRtc_Word16 *CB, /* (i) the quantizer codebook in Q13 */ |
| WebRtc_Word16 *dim, /* (i) the dimension of X and qX */ |
| WebRtc_Word16 *cbsize /* (i) the number of vectors in the codebook */ |
| ) { |
| |
| WebRtc_Word16 *qXPtr, *indexPtr, *CBPtr, *XPtr; |
| |
| /* Quantize X with the 3 vectror quantization tables */ |
| |
| qXPtr=qX; |
| indexPtr=index; |
| CBPtr=CB; |
| XPtr=X; |
| WebRtcIlbcfix_Vq3(qXPtr, indexPtr, CBPtr, XPtr, cbsize[0]); |
| |
| qXPtr+=3; |
| indexPtr+=1; |
| CBPtr+=(dim[0]*cbsize[0]); |
| XPtr+=3; |
| WebRtcIlbcfix_Vq3(qXPtr, indexPtr, CBPtr, XPtr, cbsize[1]); |
| |
| qXPtr+=3; |
| indexPtr+=1; |
| CBPtr+=(dim[1]*cbsize[1]); |
| XPtr+=3; |
| WebRtcIlbcfix_Vq4(qXPtr, indexPtr, CBPtr, XPtr, cbsize[2]); |
| |
| return; |
| } |