Revert "Upconvert various types to int."

webrtc/modules/audio_coding/codecs/g722/g722_interface.c

 /*
  *  Copyright (c) 2011 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 21 matching lines @@
     // Bitrate 64 kbps and wideband mode (2)
     G722enc_inst = (G722EncInst *) WebRtc_g722_encode_init(
         (G722EncoderState*) G722enc_inst, 64000, 2);
     if (G722enc_inst == NULL) {
         return -1;
     } else {
         return 0;
     }
 }
 
-int WebRtcG722_FreeEncoder(G722EncInst *G722enc_inst)
+int16_t WebRtcG722_FreeEncoder(G722EncInst *G722enc_inst)
 {
     // Free encoder memory
     return WebRtc_g722_encode_release((G722EncoderState*) G722enc_inst);
 }
 
 int16_t WebRtcG722_Encode(G722EncInst *G722enc_inst,
                           const int16_t* speechIn,
                           int16_t len,
                           uint8_t* encoded)
 {
@@ skipping 19 matching lines @@
     // Bitrate 64 kbps and wideband mode (2)
     G722dec_inst = (G722DecInst *) WebRtc_g722_decode_init(
         (G722DecoderState*) G722dec_inst, 64000, 2);
     if (G722dec_inst == NULL) {
         return -1;
     } else {
         return 0;
     }
 }
 
-int WebRtcG722_FreeDecoder(G722DecInst *G722dec_inst)
+int16_t WebRtcG722_FreeDecoder(G722DecInst *G722dec_inst)
 {
     // Free encoder memory
     return WebRtc_g722_decode_release((G722DecoderState*) G722dec_inst);
 }
 
 int16_t WebRtcG722_Decode(G722DecInst *G722dec_inst,
                           const uint8_t *encoded,
                           int16_t len,
                           int16_t *decoded,
                           int16_t *speechType)
@@ skipping 12 matching lines @@
     {
         strcpy(versionStr, version);
         return 0;
     }
     else
     {
         return -1;
     }
 }