Update audio code to use size_t more correctly,

webrtc/modules/audio_coding/codecs/isac/fix/source/structs.h

 /*
  *  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 16 matching lines @@
 /* Bitstream struct for decoder */
 typedef struct Bitstreamstruct_dec {
 
   uint16_t  stream[INTERNAL_STREAM_SIZE_W16];  /* Array bytestream to decode */
   uint32_t  W_upper;          /* Upper boundary of interval W */
   uint32_t  streamval;
   uint16_t  stream_index;     /* Index to the current position in bytestream */
   int16_t   full;             /* 0 - first byte in memory filled, second empty*/
   /* 1 - both bytes are empty (we just filled the previous memory */
 
-  int stream_size;  /* The size of stream. */
+  size_t stream_size;  /* The size of stream in bytes. */
 } Bitstr_dec;
 
 /* Bitstream struct for encoder */
 typedef struct Bitstreamstruct_enc {
 
   uint16_t  stream[STREAM_MAXW16_60MS];   /* Vector for adding encoded bytestream */
   uint32_t  W_upper;          /* Upper boundary of interval W */
   uint32_t  streamval;
   uint16_t  stream_index;     /* Index to the current position in bytestream */
   int16_t   full;             /* 0 - first byte in memory filled, second empty*/
@@ skipping 123 matching lines @@
   int16_t AvgPitchGain_Q12;
   int16_t lastPitchGain_Q12;
   int16_t lastPitchLag_Q7;
 
   /* --- Add-overlap in recovery packet --- */
   int16_t overlapLP[ RECOVERY_OVERLAP ];                 // [FRAMESAMPLES/2]; saved 160
 
   int16_t pitchCycles;
   int16_t A;
   int16_t B;
-  int16_t pitchIndex;
-  int16_t stretchLag;
+  size_t pitchIndex;
+  size_t stretchLag;
   int16_t *prevPitchLP;                                  // [ FRAMESAMPLES/2 ]; saved 240
   int16_t seed;
 
   int16_t std;
 } PLCstr;
 
 
 
 /* Have instance of struct together with other iSAC structs */
 typedef struct {
@@ skipping 180 matching lines @@
   int16_t   full;             /* 0 - first byte in memory filled, second empty*/
   /* 1 - both bytes are empty (we just filled the previous memory */
   uint16_t  beforeLastWord;
   uint16_t  lastWord;
 } transcode_obj;
 
 
 //Bitstr_enc myBitStr;
 
 #endif  /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_STRUCTS_H_ */