Convert channel counts to size_t.

webrtc/common_audio/channel_buffer.cc

 /*
  *  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/channel_buffer.h"
 
 namespace webrtc {
 
 IFChannelBuffer::IFChannelBuffer(size_t num_frames,
-                                 int num_channels,
+                                 size_t num_channels,
                                  size_t num_bands)
     : ivalid_(true),
       ibuf_(num_frames, num_channels, num_bands),
       fvalid_(true),
       fbuf_(num_frames, num_channels, num_bands) {}
 
 ChannelBuffer<int16_t>* IFChannelBuffer::ibuf() {
   RefreshI();
   fvalid_ = false;
   return &ibuf_;
@@ skipping 13 matching lines @@
 const ChannelBuffer<float>* IFChannelBuffer::fbuf_const() const {
   RefreshF();
   return &fbuf_;
 }
 
 void IFChannelBuffer::RefreshF() const {
   if (!fvalid_) {
     assert(ivalid_);
     const int16_t* const* int_channels = ibuf_.channels();
     float* const* float_channels = fbuf_.channels();
-    for (int i = 0; i < ibuf_.num_channels(); ++i) {
+    for (size_t i = 0; i < ibuf_.num_channels(); ++i) {
       for (size_t j = 0; j < ibuf_.num_frames(); ++j) {
         float_channels[i][j] = int_channels[i][j];
       }
     }
     fvalid_ = true;
   }
 }
 
 void IFChannelBuffer::RefreshI() const {
   if (!ivalid_) {
     assert(fvalid_);
     int16_t* const* int_channels = ibuf_.channels();
     const float* const* float_channels = fbuf_.channels();
-    for (int i = 0; i < ibuf_.num_channels(); ++i) {
+    for (size_t i = 0; i < ibuf_.num_channels(); ++i) {
       FloatS16ToS16(float_channels[i],
                     ibuf_.num_frames(),
                     int_channels[i]);
     }
     ivalid_ = true;
   }
 }
 
 }  // namespace webrtc