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-rw-r--r--1.2-netsec/codecs/ilbc/gainquant.c107
1 files changed, 0 insertions, 107 deletions
diff --git a/1.2-netsec/codecs/ilbc/gainquant.c b/1.2-netsec/codecs/ilbc/gainquant.c
deleted file mode 100644
index 33dc19474..000000000
--- a/1.2-netsec/codecs/ilbc/gainquant.c
+++ /dev/null
@@ -1,107 +0,0 @@
-
-/******************************************************************
-
- iLBC Speech Coder ANSI-C Source Code
-
- gainquant.c
-
- Copyright (C) The Internet Society (2004).
- All Rights Reserved.
-
-
-
-******************************************************************/
-
-#include <string.h>
-#include <math.h>
-#include "constants.h"
-#include "gainquant.h"
-#include "filter.h"
-
-/*----------------------------------------------------------------*
- * quantizer for the gain in the gain-shape coding of residual
- *---------------------------------------------------------------*/
-
-float gainquant(/* (o) quantized gain value */
- float in, /* (i) gain value */
- float maxIn,/* (i) maximum of gain value */
- int cblen, /* (i) number of quantization indices */
- int *index /* (o) quantization index */
-){
- int i, tindex;
- float minmeasure,measure, *cb, scale;
-
- /* ensure a lower bound on the scaling factor */
-
- scale=maxIn;
-
- if (scale<0.1) {
- scale=(float)0.1;
- }
-
- /* select the quantization table */
-
- if (cblen == 8) {
- cb = gain_sq3Tbl;
- } else if (cblen == 16) {
- cb = gain_sq4Tbl;
- } else {
- cb = gain_sq5Tbl;
- }
-
- /* select the best index in the quantization table */
-
- minmeasure=10000000.0;
- tindex=0;
- for (i=0; i<cblen; i++) {
- measure=(in-scale*cb[i])*(in-scale*cb[i]);
-
- if (measure<minmeasure) {
- tindex=i;
- minmeasure=measure;
- }
- }
- *index=tindex;
-
- /* return the quantized value */
-
-
-
- return scale*cb[tindex];
-}
-
-/*----------------------------------------------------------------*
- * decoder for quantized gains in the gain-shape coding of
- * residual
- *---------------------------------------------------------------*/
-
-float gaindequant( /* (o) quantized gain value */
- int index, /* (i) quantization index */
- float maxIn,/* (i) maximum of unquantized gain */
- int cblen /* (i) number of quantization indices */
-){
- float scale;
-
- /* obtain correct scale factor */
-
- scale=(float)fabs(maxIn);
-
- if (scale<0.1) {
- scale=(float)0.1;
- }
-
- /* select the quantization table and return the decoded value */
-
- if (cblen==8) {
- return scale*gain_sq3Tbl[index];
- } else if (cblen==16) {
- return scale*gain_sq4Tbl[index];
- }
- else if (cblen==32) {
- return scale*gain_sq5Tbl[index];
- }
-
- return 0.0;
-}
-
-