Update audio code to use size_t more correctly,

webrtc/modules/audio_coding/codecs/opus/interface/opus_interface.h

 /*
  *  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.
  */
 
 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_OPUS_INTERFACE_OPUS_INTERFACE_H_
 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_OPUS_INTERFACE_OPUS_INTERFACE_H_
 
+#include <stddef.h>
+
 #include "webrtc/typedefs.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 // Opaque wrapper types for the codec state.
 typedef struct WebRtcOpusEncInst OpusEncInst;
 typedef struct WebRtcOpusDecInst OpusDecInst;
 
@@ skipping 35 matching lines @@
  *      - length_encoded_buffer : Output buffer size
  *
  * Output:
  *      - encoded               : Output compressed data buffer
  *
  * Return value                 : >=0 - Length (in bytes) of coded data
  *                                -1 - Error
  */
 int WebRtcOpus_Encode(OpusEncInst* inst,
                       const int16_t* audio_in,
-                      int16_t samples,
-                      int16_t length_encoded_buffer,
+                      size_t samples,
+                      size_t length_encoded_buffer,
                       uint8_t* encoded);
 
 /****************************************************************************
  * WebRtcOpus_SetBitRate(...)
  *
  * This function adjusts the target bitrate of the encoder.
  *
  * Input:
  *      - inst               : Encoder context
  *      - rate               : New target bitrate
@@ skipping 149 matching lines @@
  * Output:
  *      - decoded            : The decoded vector
  *      - audio_type         : 1 normal, 2 CNG (for Opus it should
  *                             always return 1 since we're not using Opus's
  *                             built-in DTX/CNG scheme)
  *
  * Return value              : >0 - Samples per channel in decoded vector
  *                             -1 - Error
  */
 int WebRtcOpus_Decode(OpusDecInst* inst, const uint8_t* encoded,
-                      int16_t encoded_bytes, int16_t* decoded,
+                      size_t encoded_bytes, int16_t* decoded,
                       int16_t* audio_type);
 
 /****************************************************************************
  * WebRtcOpus_DecodePlc(...)
  *
  * This function processes PLC for opus frame(s).
  * Input:
  *        - inst                  : Decoder context
  *        - number_of_lost_frames : Number of PLC frames to produce
  *
@@ skipping 18 matching lines @@
  *      - encoded_bytes      : Bytes in encoded vector
  *
  * Output:
  *      - decoded            : The decoded vector (previous frame)
  *
  * Return value              : >0 - Samples per channel in decoded vector
  *                              0 - No FEC data in the packet
  *                             -1 - Error
  */
 int WebRtcOpus_DecodeFec(OpusDecInst* inst, const uint8_t* encoded,
-                         int16_t encoded_bytes, int16_t* decoded,
+                         size_t encoded_bytes, int16_t* decoded,
                          int16_t* audio_type);
 
 /****************************************************************************
  * WebRtcOpus_DurationEst(...)
  *
  * This function calculates the duration of an opus packet.
  * Input:
  *        - inst                 : Decoder context
  *        - payload              : Encoded data pointer
  *        - payload_length_bytes : Bytes of encoded data
  *
  * Return value                  : The duration of the packet, in samples per
  *                                 channel.
  */
 int WebRtcOpus_DurationEst(OpusDecInst* inst,
                            const uint8_t* payload,
-                           int payload_length_bytes);
+                           size_t payload_length_bytes);
 
 /* TODO(minyue): Check whether it is needed to add a decoder context to the
  * arguments, like WebRtcOpus_DurationEst(...). In fact, the packet itself tells
  * the duration. The decoder context in WebRtcOpus_DurationEst(...) is not used.
  * So it may be advisable to remove it from WebRtcOpus_DurationEst(...). */
 
 /****************************************************************************
  * WebRtcOpus_FecDurationEst(...)
  *
  * This function calculates the duration of the FEC data within an opus packet.
  * Input:
  *        - payload              : Encoded data pointer
  *        - payload_length_bytes : Bytes of encoded data
  *
  * Return value                  : >0 - The duration of the FEC data in the
  *                                 packet in samples per channel.
  *                                  0 - No FEC data in the packet.
  */
 int WebRtcOpus_FecDurationEst(const uint8_t* payload,
-                              int payload_length_bytes);
+                              size_t payload_length_bytes);
 
 /****************************************************************************
  * WebRtcOpus_PacketHasFec(...)
  *
  * This function detects if an opus packet has FEC.
  * Input:
  *        - payload              : Encoded data pointer
  *        - payload_length_bytes : Bytes of encoded data
  *
  * Return value                  : 0 - the packet does NOT contain FEC.
  *                                 1 - the packet contains FEC.
  */
 int WebRtcOpus_PacketHasFec(const uint8_t* payload,
-                            int payload_length_bytes);
+                            size_t payload_length_bytes);
 
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif  // WEBRTC_MODULES_AUDIO_CODING_CODECS_OPUS_INTERFACE_OPUS_INTERFACE_H_