Prepare to convert various types to size_t.

webrtc/modules/audio_coding/codecs/ilbc/do_plc.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.
  */
 
@@ skipping 19 matching lines @@
     int16_t *PLCresidual,  /* (o) concealed residual */
     int16_t *PLClpc,    /* (o) concealed LP parameters */
     int16_t PLI,     /* (i) packet loss indicator
                                                            0 - no PL, 1 = PL */
     int16_t *decresidual,  /* (i) decoded residual */
     int16_t *lpc,    /* (i) decoded LPC (only used for no PL) */
     int16_t inlag,    /* (i) pitch lag */
     IlbcDecoder *iLBCdec_inst
     /* (i/o) decoder instance */
                             ){
-  int16_t i, pick;
+  int16_t i;
   int32_t cross, ener, cross_comp, ener_comp = 0;
   int32_t measure, maxMeasure, energy;
   int16_t max, crossSquareMax, crossSquare;
   int16_t j, lag, tmp1, tmp2, randlag;
   int16_t shift1, shift2, shift3, shiftMax;
   int16_t scale3;
   int16_t corrLen;
   int32_t tmpW32, tmp2W32;
   int16_t use_gain;
   int16_t tot_gain;
@@ skipping 176 matching lines @@
     }
 
     /* compute concealed residual */
     energy = 0;
 
     for (i=0; i<iLBCdec_inst->blockl; i++) {
 
       /* noise component -  52 < randlagFIX < 117 */
       iLBCdec_inst->seed = (int16_t)(iLBCdec_inst->seed * 31821 + 13849);
       randlag = 53 + (int16_t)(iLBCdec_inst->seed & 63);
-
-      pick = i - randlag;
-
-      if (pick < 0) {
-        randvec[i] = iLBCdec_inst->prevResidual[iLBCdec_inst->blockl+pick];
+      if (randlag > i) {
+        randvec[i] =
+            iLBCdec_inst->prevResidual[iLBCdec_inst->blockl + i - randlag];
       } else {
-        randvec[i] = iLBCdec_inst->prevResidual[pick];
+        randvec[i] = iLBCdec_inst->prevResidual[i - randlag];
       }
 
       /* pitch repeatition component */
-      pick = i - use_lag;
-
-      if (pick < 0) {
-        PLCresidual[i] = iLBCdec_inst->prevResidual[iLBCdec_inst->blockl+pick];
+      if (use_lag > i) {
+        PLCresidual[i] =
+            iLBCdec_inst->prevResidual[iLBCdec_inst->blockl + i - use_lag];
       } else {
-        PLCresidual[i] = PLCresidual[pick];
+        PLCresidual[i] = PLCresidual[i - use_lag];
       }
 
       /* Attinuate total gain for each 10 ms */
       if (i<80) {
         tot_gain=use_gain;
       } else if (i<160) {
         tot_gain = (int16_t)((31130 * use_gain) >> 15);  /* 0.95*use_gain */
       } else {
         tot_gain = (int16_t)((29491 * use_gain) >> 15);  /* 0.9*use_gain */
       }
@@ skipping 34 matching lines @@
     iLBCdec_inst->consPLICount = 0;
   }
 
   /* update state */
   iLBCdec_inst->prevPLI = PLI;
   WEBRTC_SPL_MEMCPY_W16(iLBCdec_inst->prevLpc, PLClpc, (LPC_FILTERORDER+1));
   WEBRTC_SPL_MEMCPY_W16(iLBCdec_inst->prevResidual, PLCresidual, iLBCdec_inst->blockl);
 
   return;
 }