Update a ton of audio code to use size_t more correctly and in general reduce

webrtc/modules/audio_processing/aec/aec_resampler.c

 /*
  *  Copyright (c) 2012 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 46 matching lines @@
   return 0;
 }
 
 void WebRtcAec_FreeResampler(void* resampInst) {
   AecResampler* obj = (AecResampler*)resampInst;
   free(obj);
 }
 
 void WebRtcAec_ResampleLinear(void* resampInst,
                               const float* inspeech,
-                              int size,
+                              size_t size,
                               float skew,
                               float* outspeech,
-                              int* size_out) {
+                              size_t* size_out) {
   AecResampler* obj = (AecResampler*)resampInst;
 
   float* y;
   float be, tnew;
-  int tn, mm;
+  size_t tn, mm;
 
-  assert(size >= 0);
   assert(size <= 2 * FRAME_LEN);
   assert(resampInst != NULL);
   assert(inspeech != NULL);
   assert(outspeech != NULL);
   assert(size_out != NULL);
 
   // Add new frame data in lookahead
   memcpy(&obj->buffer[FRAME_LEN + kResamplingDelay],
          inspeech,
          size * sizeof(inspeech[0]));
 
   // Sample rate ratio
   be = 1 + skew;
 
   // Loop over input frame
   mm = 0;
   y = &obj->buffer[FRAME_LEN];  // Point at current frame
 
   tnew = be * mm + obj->position;
-  tn = (int)tnew;
+  tn = (size_t)tnew;
 
   while (tn < size) {
 
     // Interpolation
     outspeech[mm] = y[tn] + (tnew - tn) * (y[tn + 1] - y[tn]);
     mm++;
 
     tnew = be * mm + obj->position;
     tn = (int)tnew;
   }
@@ skipping 93 matching lines @@
   xAvg = x / n;
   denom = x2 - xAvg * x;
 
   if (denom != 0) {
     skew = (xy - xAvg * y) / denom;
   }
 
   *skewEst = skew;
   return 0;
 }