Update audio code to use size_t more correctly,

webrtc/modules/audio_coding/codecs/ilbc/get_cd_vec.c

 /*
  *  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_GetCbVec.c
 
 ******************************************************************/
 
 #include "defines.h"
 #include "constants.h"
 #include "create_augmented_vec.h"
 
 /*----------------------------------------------------------------*
  *  Construct codebook vector for given index.
  *---------------------------------------------------------------*/
 
 void WebRtcIlbcfix_GetCbVec(
     int16_t *cbvec,   /* (o) Constructed codebook vector */
     int16_t *mem,   /* (i) Codebook buffer */
-    int16_t index,   /* (i) Codebook index */
-    int16_t lMem,   /* (i) Length of codebook buffer */
-    int16_t cbveclen   /* (i) Codebook vector length */
+    size_t index,   /* (i) Codebook index */
+    size_t lMem,   /* (i) Length of codebook buffer */
+    size_t cbveclen   /* (i) Codebook vector length */
                             ){
-  int16_t k, base_size;
-  int16_t lag;
+  size_t k, base_size;
+  size_t lag;
   /* Stack based */
   int16_t tempbuff2[SUBL+5];
 
   /* Determine size of codebook sections */
 
   base_size=lMem-cbveclen+1;
 
   if (cbveclen==SUBL) {
     base_size += cbveclen / 2;
   }
 
   /* No filter -> First codebook section */
 
   if (index<lMem-cbveclen+1) {
 
     /* first non-interpolated vectors */
 
     k=index+cbveclen;
     /* get vector */
     WEBRTC_SPL_MEMCPY_W16(cbvec, mem+lMem-k, cbveclen);
 
   } else if (index < base_size) {
 
     /* Calculate lag */
 
-    k = (int16_t)(2 * (index - (lMem - cbveclen + 1))) + cbveclen;
+    k = (2 * (index - (lMem - cbveclen + 1))) + cbveclen;
 
     lag = k / 2;
 
     WebRtcIlbcfix_CreateAugmentedVec(lag, mem+lMem, cbvec);
 
   }
 
   /* Higher codebbok section based on filtering */
 
   else {
 
-    int16_t memIndTest;
+    size_t memIndTest;
 
     /* first non-interpolated vectors */
 
     if (index-base_size<lMem-cbveclen+1) {
 
       /* Set up filter memory, stuff zeros outside memory buffer */
 
       memIndTest = lMem-(index-base_size+cbveclen);
 
       WebRtcSpl_MemSetW16(mem-CB_HALFFILTERLEN, 0, CB_HALFFILTERLEN);
       WebRtcSpl_MemSetW16(mem+lMem, 0, CB_HALFFILTERLEN);
 
       /* do filtering to get the codebook vector */
 
       WebRtcSpl_FilterMAFastQ12(
           &mem[memIndTest+4], cbvec, (int16_t*)WebRtcIlbcfix_kCbFiltersRev,
           CB_FILTERLEN, cbveclen);
     }
 
     /* interpolated vectors */
 
     else {
       /* Stuff zeros outside memory buffer  */
       memIndTest = lMem-cbveclen-CB_FILTERLEN;
       WebRtcSpl_MemSetW16(mem+lMem, 0, CB_HALFFILTERLEN);
 
       /* do filtering */
       WebRtcSpl_FilterMAFastQ12(
           &mem[memIndTest+7], tempbuff2, (int16_t*)WebRtcIlbcfix_kCbFiltersRev,
-          CB_FILTERLEN, (int16_t)(cbveclen+5));
+          CB_FILTERLEN, cbveclen+5);
 
       /* Calculate lag index */
       lag = (cbveclen<<1)-20+index-base_size-lMem-1;
 
       WebRtcIlbcfix_CreateAugmentedVec(lag, tempbuff2+SUBL+5, cbvec);
     }
   }
 }