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

webrtc/common_audio/signal_processing/cross_correlation_neon.c

 /*
  *  Copyright (c) 2014 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.
  */
 
 #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
 
 #include <arm_neon.h>
 
 static inline void DotProductWithScaleNeon(int32_t* cross_correlation,
                                            const int16_t* vector1,
                                            const int16_t* vector2,
-                                           int length,
+                                           size_t length,
                                            int scaling) {
-  int i = 0;
-  int len1 = length >> 3;
-  int len2 = length & 7;
+  size_t i = 0;
+  size_t len1 = length >> 3;
+  size_t len2 = length & 7;
   int64x2_t sum0 = vdupq_n_s64(0);
   int64x2_t sum1 = vdupq_n_s64(0);
 
-  if (length < 0) {
-    *cross_correlation = 0;
-    return;
-  }
-
   for (i = len1; i > 0; i -= 1) {
     int16x8_t seq1_16x8 = vld1q_s16(vector1);
     int16x8_t seq2_16x8 = vld1q_s16(vector2);
 #if defined(WEBRTC_ARCH_ARM64)
     int32x4_t tmp0 = vmull_s16(vget_low_s16(seq1_16x8),
                                vget_low_s16(seq2_16x8));
     int32x4_t tmp1 = vmull_high_s16(seq1_16x8, seq2_16x8);
 #else
     int32x4_t tmp0 = vmull_s16(vget_low_s16(seq1_16x8),
                                vget_low_s16(seq2_16x8));
@@ skipping 24 matching lines @@
   sum2 = vadd_s64(sum2, vdup_n_s64(sum_res));
   sum2 = vshl_s64(sum2, shift);
   vst1_lane_s32(cross_correlation, vreinterpret_s32_s64(sum2), 0);
 #endif
 }
 
 /* NEON version of WebRtcSpl_CrossCorrelation() for ARM32/64 platforms. */
 void WebRtcSpl_CrossCorrelationNeon(int32_t* cross_correlation,
                                     const int16_t* seq1,
                                     const int16_t* seq2,
-                                    int16_t dim_seq,
-                                    int16_t dim_cross_correlation,
+                                    size_t dim_seq,
+                                    size_t dim_cross_correlation,
                                     int right_shifts,
                                     int step_seq2) {
-  int i = 0;
+  size_t i = 0;
 
   for (i = 0; i < dim_cross_correlation; i++) {
     const int16_t* seq1_ptr = seq1;
     const int16_t* seq2_ptr = seq2 + (step_seq2 * i);
 
     DotProductWithScaleNeon(cross_correlation,
                             seq1_ptr,
                             seq2_ptr,
                             dim_seq,
                             right_shifts);
     cross_correlation++;
   }
 }