Reland "Upconvert various types to int.", misc. codecs portion.

webrtc/modules/audio_coding/codecs/opus/audio_encoder_opus.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.
  */
 
@@ skipping 180 matching lines @@
     first_timestamp_in_buffer_ = rtp_timestamp;
   input_buffer_.insert(input_buffer_.end(), audio,
                        audio + samples_per_10ms_frame_);
   if (input_buffer_.size() < (static_cast<size_t>(num_10ms_frames_per_packet_) *
                               samples_per_10ms_frame_)) {
     return EncodedInfo();
   }
   CHECK_EQ(input_buffer_.size(),
            static_cast<size_t>(num_10ms_frames_per_packet_) *
            samples_per_10ms_frame_);
-  int16_t status = WebRtcOpus_Encode(
+  int status = WebRtcOpus_Encode(
       inst_, &input_buffer_[0],
       rtc::CheckedDivExact(CastInt16(input_buffer_.size()),
                            static_cast<int16_t>(num_channels_)),
       ClampInt16(max_encoded_bytes), encoded);
   CHECK_GE(status, 0);  // Fails only if fed invalid data.
   input_buffer_.clear();
   EncodedInfo info;
   info.encoded_bytes = static_cast<size_t>(status);
   info.encoded_timestamp = first_timestamp_in_buffer_;
   info.payload_type = payload_type_;
@@ skipping 44 matching lines @@
   return Reconstruct(conf);
 }
 
 bool AudioEncoderMutableOpus::SetMaxPlaybackRate(int frequency_hz) {
   auto conf = config();
   conf.max_playback_rate_hz = frequency_hz;
   return Reconstruct(conf);
 }
 
 }  // namespace webrtc