Match existing type usage better.

webrtc/voice_engine/utility_unittest.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 36 matching lines @@
 
 // Sets the signal value to increase by |data| with every sample. Floats are
 // used so non-integer values result in rounding error, but not an accumulating
 // error.
 void SetMonoFrame(AudioFrame* frame, float data, int sample_rate_hz) {
   memset(frame->data_, 0, sizeof(frame->data_));
   frame->num_channels_ = 1;
   frame->sample_rate_hz_ = sample_rate_hz;
   frame->samples_per_channel_ = sample_rate_hz / 100;
   for (int i = 0; i < frame->samples_per_channel_; i++) {
-    frame->data_[i] = data * i;
+    frame->data_[i] = static_cast<int16_t>(data * i);
   }
 }
 
 // Keep the existing sample rate.
 void SetMonoFrame(AudioFrame* frame, float data) {
   SetMonoFrame(frame, data, frame->sample_rate_hz_);
 }
 
 // Sets the signal value to increase by |left| and |right| with every sample in
 // each channel respectively.
 void SetStereoFrame(AudioFrame* frame, float left, float right,
                     int sample_rate_hz) {
   memset(frame->data_, 0, sizeof(frame->data_));
   frame->num_channels_ = 2;
   frame->sample_rate_hz_ = sample_rate_hz;
   frame->samples_per_channel_ = sample_rate_hz / 100;
   for (int i = 0; i < frame->samples_per_channel_; i++) {
-    frame->data_[i * 2] = left * i;
-    frame->data_[i * 2 + 1] = right * i;
+    frame->data_[i * 2] = static_cast<int16_t>(left * i);
+    frame->data_[i * 2 + 1] = static_cast<int16_t>(right * i);
   }
 }
 
 // Keep the existing sample rate.
 void SetStereoFrame(AudioFrame* frame, float left, float right) {
   SetStereoFrame(frame, left, right, frame->sample_rate_hz_);
 }
 
 void VerifyParams(const AudioFrame& ref_frame, const AudioFrame& test_frame) {
   EXPECT_EQ(ref_frame.num_channels_, test_frame.num_channels_);
@@ skipping 167 matching lines @@
           }
         }
       }
     }
   }
 }
 
 }  // namespace
 }  // namespace voe
 }  // namespace webrtc