[NOT FOR REVIEW] Convert channel counts to size_t.

webrtc/modules/audio_processing/noise_suppression_impl.cc

 /*
  *  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 45 matching lines @@
 NoiseSuppressionImpl::~NoiseSuppressionImpl() {}
 
 int NoiseSuppressionImpl::AnalyzeCaptureAudio(AudioBuffer* audio) {
 #if defined(WEBRTC_NS_FLOAT)
   if (!is_component_enabled()) {
     return apm_->kNoError;
   }
   assert(audio->num_frames_per_band() <= 160);
   assert(audio->num_channels() == num_handles());
 
-  for (int i = 0; i < num_handles(); ++i) {
+  for (size_t i = 0; i < num_handles(); ++i) {
     Handle* my_handle = static_cast<Handle*>(handle(i));
 
     WebRtcNs_Analyze(my_handle, audio->split_bands_const_f(i)[kBand0To8kHz]);
   }
 #endif
   return apm_->kNoError;
 }
 
 int NoiseSuppressionImpl::ProcessCaptureAudio(AudioBuffer* audio) {
   if (!is_component_enabled()) {
     return apm_->kNoError;
   }
   assert(audio->num_frames_per_band() <= 160);
   assert(audio->num_channels() == num_handles());
 
-  for (int i = 0; i < num_handles(); ++i) {
+  for (size_t i = 0; i < num_handles(); ++i) {
     Handle* my_handle = static_cast<Handle*>(handle(i));
 #if defined(WEBRTC_NS_FLOAT)
     WebRtcNs_Process(my_handle,
                      audio->split_bands_const_f(i),
                      audio->num_bands(),
                      audio->split_bands_f(i));
 #elif defined(WEBRTC_NS_FIXED)
     WebRtcNsx_Process(my_handle,
                       audio->split_bands_const(i),
                       audio->num_bands(),
@@ skipping 22 matching lines @@
   return Configure();
 }
 
 NoiseSuppression::Level NoiseSuppressionImpl::level() const {
   return level_;
 }
 
 float NoiseSuppressionImpl::speech_probability() const {
 #if defined(WEBRTC_NS_FLOAT)
   float probability_average = 0.0f;
-  for (int i = 0; i < num_handles(); i++) {
+  for (size_t i = 0; i < num_handles(); i++) {
     Handle* my_handle = static_cast<Handle*>(handle(i));
     probability_average += WebRtcNs_prior_speech_probability(my_handle);
   }
   return probability_average / num_handles();
 #elif defined(WEBRTC_NS_FIXED)
   // Currently not available for the fixed point implementation.
   return apm_->kUnsupportedFunctionError;
 #endif
 }
 
@@ skipping 26 matching lines @@
 int NoiseSuppressionImpl::ConfigureHandle(void* handle) const {
 #if defined(WEBRTC_NS_FLOAT)
   return WebRtcNs_set_policy(static_cast<Handle*>(handle),
                              MapSetting(level_));
 #elif defined(WEBRTC_NS_FIXED)
   return WebRtcNsx_set_policy(static_cast<Handle*>(handle),
                               MapSetting(level_));
 #endif
 }
 
-int NoiseSuppressionImpl::num_handles_required() const {
+size_t NoiseSuppressionImpl::num_handles_required() const {
   return apm_->num_output_channels();
 }
 
 int NoiseSuppressionImpl::GetHandleError(void* handle) const {
   // The NS has no get_error() function.
   assert(handle != NULL);
   return apm_->kUnspecifiedError;
 }
 }  // namespace webrtc