Use size_t more consistently for packet/payload lengths.

See design doc at https://docs.google.com/a/chromium.org/document/d/1I6nmE9D_BmCY-IoV6MDPY2V6WYpEI-dg2apWXTfZyUI/edit?usp=sharing for more information.

This CL was reviewed and approved in pieces in the following CLs:
https://webrtc-codereview.appspot.com/24209004/
https://webrtc-codereview.appspot.com/24229004/
https://webrtc-codereview.appspot.com/24259004/
https://webrtc-codereview.appspot.com/25109004/
https://webrtc-codereview.appspot.com/26099004/
https://webrtc-codereview.appspot.com/27069004/
https://webrtc-codereview.appspot.com/27969004/
https://webrtc-codereview.appspot.com/27989004/
https://webrtc-codereview.appspot.com/29009004/
https://webrtc-codereview.appspot.com/30929004/
https://webrtc-codereview.appspot.com/30939004/
https://webrtc-codereview.appspot.com/31999004/
Committing as TBR to the original reviewers.

BUG=chromium:81439
TEST=none
TBR=pthatcher,henrik.lundin,tina.legrand,stefan,tkchin,glaznev,kjellander,perkj,mflodman,henrika,asapersson,niklas.enbom

Review URL: https://webrtc-codereview.appspot.com/23129004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7726 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_coding/codecs/cng/include/webrtc_cng.h b/webrtc/modules/audio_coding/codecs/cng/include/webrtc_cng.h
index d90a269..b016f40 100644
--- a/webrtc/modules/audio_coding/codecs/cng/include/webrtc_cng.h
+++ b/webrtc/modules/audio_coding/codecs/cng/include/webrtc_cng.h
@@ -12,6 +12,7 @@
 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_CNG_MAIN_INTERFACE_WEBRTC_CNG_H_
 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_CNG_MAIN_INTERFACE_WEBRTC_CNG_H_
 
+#include <stddef.h>
 #include "webrtc/typedefs.h"
 
 #ifdef __cplusplus
@@ -120,7 +121,7 @@
  *                      -1 - Error
  */
 int16_t WebRtcCng_UpdateSid(CNG_dec_inst* cng_inst, uint8_t* SID,
-                            int16_t length);
+                            size_t length);
 
 /****************************************************************************
  * WebRtcCng_Generate(...)
diff --git a/webrtc/modules/audio_coding/codecs/cng/webrtc_cng.c b/webrtc/modules/audio_coding/codecs/cng/webrtc_cng.c
index 28bfaae..614a3df 100644
--- a/webrtc/modules/audio_coding/codecs/cng/webrtc_cng.c
+++ b/webrtc/modules/audio_coding/codecs/cng/webrtc_cng.c
@@ -411,7 +411,7 @@
  *                      -1 - Error
  */
 int16_t WebRtcCng_UpdateSid(CNG_dec_inst* cng_inst, uint8_t* SID,
-                            int16_t length) {
+                            size_t length) {
 
   WebRtcCngDecInst_t* inst = (WebRtcCngDecInst_t*) cng_inst;
   int16_t refCs[WEBRTC_CNG_MAX_LPC_ORDER];
@@ -427,7 +427,7 @@
   if (length > (WEBRTC_CNG_MAX_LPC_ORDER + 1))
     length = WEBRTC_CNG_MAX_LPC_ORDER + 1;
 
-  inst->dec_order = length - 1;
+  inst->dec_order = (int16_t)length - 1;
 
   if (SID[0] > 93)
     SID[0] = 93;
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_receive_test.cc b/webrtc/modules/audio_coding/main/acm2/acm_receive_test.cc
index 7e41328..08ece69 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_receive_test.cc
+++ b/webrtc/modules/audio_coding/main/acm2/acm_receive_test.cc
@@ -113,10 +113,9 @@
     header.header = packet->header();
     header.frameType = kAudioFrameSpeech;
     memset(&header.type.Audio, 0, sizeof(RTPAudioHeader));
-    EXPECT_TRUE(
-        acm_->InsertPacket(packet->payload(),
-                           static_cast<int32_t>(packet->payload_length_bytes()),
-                           header))
+    EXPECT_TRUE(acm_->InsertPacket(packet->payload(),
+                                   packet->payload_length_bytes(),
+                                   header))
         << "Failure when inserting packet:" << std::endl
         << "  PT = " << static_cast<int>(header.header.payloadType) << std::endl
         << "  TS = " << header.header.timestamp << std::endl
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_receiver.cc b/webrtc/modules/audio_coding/main/acm2/acm_receiver.cc
index 0744754..bbe5a16 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_receiver.cc
+++ b/webrtc/modules/audio_coding/main/acm2/acm_receiver.cc
@@ -261,7 +261,7 @@
 
 int AcmReceiver::InsertPacket(const WebRtcRTPHeader& rtp_header,
                               const uint8_t* incoming_payload,
-                              int length_payload) {
+                              size_t length_payload) {
   uint32_t receive_timestamp = 0;
   InitialDelayManager::PacketType packet_type =
       InitialDelayManager::kUndefinedPacket;
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_receiver.h b/webrtc/modules/audio_coding/main/acm2/acm_receiver.h
index 6d31b9a..057cb5a 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_receiver.h
+++ b/webrtc/modules/audio_coding/main/acm2/acm_receiver.h
@@ -67,7 +67,7 @@
   //
   int InsertPacket(const WebRtcRTPHeader& rtp_header,
                    const uint8_t* incoming_payload,
-                   int length_payload);
+                   size_t length_payload);
 
   //
   // Asks NetEq for 10 milliseconds of decoded audio.
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_receiver_unittest.cc b/webrtc/modules/audio_coding/main/acm2/acm_receiver_unittest.cc
index 9cfef3a..ff43899 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_receiver_unittest.cc
+++ b/webrtc/modules/audio_coding/main/acm2/acm_receiver_unittest.cc
@@ -115,12 +115,12 @@
     }
   }
 
-  virtual int SendData(
+  virtual int32_t SendData(
       FrameType frame_type,
       uint8_t payload_type,
       uint32_t timestamp,
       const uint8_t* payload_data,
-      uint16_t payload_len_bytes,
+      size_t payload_len_bytes,
       const RTPFragmentationHeader* fragmentation) OVERRIDE {
     if (frame_type == kFrameEmpty)
       return 0;
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_receiver_unittest_oldapi.cc b/webrtc/modules/audio_coding/main/acm2/acm_receiver_unittest_oldapi.cc
index ef890ec..8c37c96 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_receiver_unittest_oldapi.cc
+++ b/webrtc/modules/audio_coding/main/acm2/acm_receiver_unittest_oldapi.cc
@@ -124,7 +124,7 @@
       uint8_t payload_type,
       uint32_t timestamp,
       const uint8_t* payload_data,
-      uint16_t payload_len_bytes,
+      size_t payload_len_bytes,
       const RTPFragmentationHeader* fragmentation) OVERRIDE {
     if (frame_type == kFrameEmpty)
       return 0;
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_send_test.cc b/webrtc/modules/audio_coding/main/acm2/acm_send_test.cc
index ec3c254..d2ecb16 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_send_test.cc
+++ b/webrtc/modules/audio_coding/main/acm2/acm_send_test.cc
@@ -94,7 +94,7 @@
                               uint8_t payload_type,
                               uint32_t timestamp,
                               const uint8_t* payload_data,
-                              uint16_t payload_len_bytes,
+                              size_t payload_len_bytes,
                               const RTPFragmentationHeader* fragmentation) {
   // Store the packet locally.
   frame_type_ = frame_type;
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_send_test.h b/webrtc/modules/audio_coding/main/acm2/acm_send_test.h
index 8bc0cde..ac20cc7 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_send_test.h
+++ b/webrtc/modules/audio_coding/main/acm2/acm_send_test.h
@@ -49,7 +49,7 @@
       uint8_t payload_type,
       uint32_t timestamp,
       const uint8_t* payload_data,
-      uint16_t payload_len_bytes,
+      size_t payload_len_bytes,
       const RTPFragmentationHeader* fragmentation) OVERRIDE;
 
  private:
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_send_test_oldapi.cc b/webrtc/modules/audio_coding/main/acm2/acm_send_test_oldapi.cc
index 2f5178e..42dc628 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_send_test_oldapi.cc
+++ b/webrtc/modules/audio_coding/main/acm2/acm_send_test_oldapi.cc
@@ -98,7 +98,7 @@
     uint8_t payload_type,
     uint32_t timestamp,
     const uint8_t* payload_data,
-    uint16_t payload_len_bytes,
+    size_t payload_len_bytes,
     const RTPFragmentationHeader* fragmentation) {
   // Store the packet locally.
   frame_type_ = frame_type;
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_send_test_oldapi.h b/webrtc/modules/audio_coding/main/acm2/acm_send_test_oldapi.h
index ff229a0..e990284 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_send_test_oldapi.h
+++ b/webrtc/modules/audio_coding/main/acm2/acm_send_test_oldapi.h
@@ -51,7 +51,7 @@
       uint8_t payload_type,
       uint32_t timestamp,
       const uint8_t* payload_data,
-      uint16_t payload_len_bytes,
+      size_t payload_len_bytes,
       const RTPFragmentationHeader* fragmentation) OVERRIDE;
 
  private:
diff --git a/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.cc b/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.cc
index bee1f66..458e5c8 100644
--- a/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.cc
+++ b/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.cc
@@ -314,7 +314,7 @@
 int AudioCodingModuleImpl::ProcessDualStream() {
   uint8_t stream[kMaxNumFragmentationVectors * MAX_PAYLOAD_SIZE_BYTE];
   uint32_t current_timestamp;
-  int16_t length_bytes = 0;
+  size_t length_bytes = 0;
   RTPFragmentationHeader my_fragmentation;
 
   uint8_t my_red_payload_type;
@@ -336,8 +336,7 @@
       // Nothing to send.
       return 0;
     }
-    int len_bytes_previous_secondary = static_cast<int>(
-        fragmentation_.fragmentationLength[2]);
+    size_t len_bytes_previous_secondary = fragmentation_.fragmentationLength[2];
     assert(len_bytes_previous_secondary <= MAX_PAYLOAD_SIZE_BYTE);
     bool has_previous_payload = len_bytes_previous_secondary > 0;
 
@@ -1689,13 +1688,8 @@
 
 // Incoming packet from network parsed and ready for decode.
 int AudioCodingModuleImpl::IncomingPacket(const uint8_t* incoming_payload,
-                                          const int payload_length,
+                                          const size_t payload_length,
                                           const WebRtcRTPHeader& rtp_header) {
-  if (payload_length < 0) {
-    WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, id_,
-                 "IncomingPacket() Error, payload-length cannot be negative");
-    return -1;
-  }
   int last_audio_pltype = receiver_.last_audio_payload_type();
   if (receiver_.InsertPacket(rtp_header, incoming_payload, payload_length) <
       0) {
@@ -1797,16 +1791,9 @@
 
 // TODO(tlegrand): Modify this function to work for stereo, and add tests.
 int AudioCodingModuleImpl::IncomingPayload(const uint8_t* incoming_payload,
-                                           int payload_length,
+                                           size_t payload_length,
                                            uint8_t payload_type,
                                            uint32_t timestamp) {
-  if (payload_length < 0) {
-    // Log error in trace file.
-    WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, id_,
-                 "IncomingPacket() Error, payload-length cannot be negative");
-    return -1;
-  }
-
   // We are not acquiring any lock when interacting with |aux_rtp_header_| no
   // other method uses this member variable.
   if (aux_rtp_header_ == NULL) {
@@ -1960,7 +1947,7 @@
 }
 
 void AudioCodingModuleImpl::ResetFragmentation(int vector_size) {
-  for (int n = 0; n < kMaxNumFragmentationVectors; n++) {
+  for (size_t n = 0; n < kMaxNumFragmentationVectors; n++) {
     fragmentation_.fragmentationOffset[n] = n * MAX_PAYLOAD_SIZE_BYTE;
   }
   memset(fragmentation_.fragmentationLength, 0, kMaxNumFragmentationVectors *
@@ -2116,14 +2103,14 @@
 }
 
 bool AudioCodingImpl::InsertPacket(const uint8_t* incoming_payload,
-                                   int32_t payload_len_bytes,
+                                   size_t payload_len_bytes,
                                    const WebRtcRTPHeader& rtp_info) {
   return acm_old_->IncomingPacket(
              incoming_payload, payload_len_bytes, rtp_info) == 0;
 }
 
 bool AudioCodingImpl::InsertPayload(const uint8_t* incoming_payload,
-                                    int32_t payload_len_byte,
+                                    size_t payload_len_byte,
                                     uint8_t payload_type,
                                     uint32_t timestamp) {
   FATAL() << "Not implemented yet.";
diff --git a/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.h b/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.h
index b8d128f..949ce33 100644
--- a/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.h
+++ b/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.h
@@ -156,13 +156,13 @@
 
   // Incoming packet from network parsed and ready for decode.
   virtual int IncomingPacket(const uint8_t* incoming_payload,
-                             int payload_length,
+                             const size_t payload_length,
                              const WebRtcRTPHeader& rtp_info) OVERRIDE;
 
   // Incoming payloads, without rtp-info, the rtp-info will be created in ACM.
   // One usage for this API is when pre-encoded files are pushed in ACM.
   virtual int IncomingPayload(const uint8_t* incoming_payload,
-                              int payload_length,
+                              const size_t payload_length,
                               uint8_t payload_type,
                               uint32_t timestamp) OVERRIDE;
 
@@ -423,11 +423,11 @@
                                     uint8_t payload_type) OVERRIDE;
 
   virtual bool InsertPacket(const uint8_t* incoming_payload,
-                            int32_t payload_len_bytes,
+                            size_t payload_len_bytes,
                             const WebRtcRTPHeader& rtp_info) OVERRIDE;
 
   virtual bool InsertPayload(const uint8_t* incoming_payload,
-                             int32_t payload_len_byte,
+                             size_t payload_len_byte,
                              uint8_t payload_type,
                              uint32_t timestamp) OVERRIDE;
 
diff --git a/webrtc/modules/audio_coding/main/acm2/audio_coding_module_unittest.cc b/webrtc/modules/audio_coding/main/acm2/audio_coding_module_unittest.cc
index 828b772..b64c74d 100644
--- a/webrtc/modules/audio_coding/main/acm2/audio_coding_module_unittest.cc
+++ b/webrtc/modules/audio_coding/main/acm2/audio_coding_module_unittest.cc
@@ -42,7 +42,7 @@
 const int kNumSamples10ms = kSampleRateHz / 100;
 const int kFrameSizeMs = 10;  // Multiple of 10.
 const int kFrameSizeSamples = kFrameSizeMs / 10 * kNumSamples10ms;
-const int kPayloadSizeBytes = kFrameSizeSamples * sizeof(int16_t);
+const size_t kPayloadSizeBytes = kFrameSizeSamples * sizeof(int16_t);
 const uint8_t kPayloadType = 111;
 
 class RtpUtility {
@@ -87,7 +87,7 @@
       uint8_t payload_type,
       uint32_t timestamp,
       const uint8_t* payload_data,
-      uint16_t payload_len_bytes,
+      size_t payload_len_bytes,
       const RTPFragmentationHeader* fragmentation) OVERRIDE {
     CriticalSectionScoped lock(crit_sect_.get());
     ++num_calls_;
diff --git a/webrtc/modules/audio_coding/main/acm2/audio_coding_module_unittest_oldapi.cc b/webrtc/modules/audio_coding/main/acm2/audio_coding_module_unittest_oldapi.cc
index d9ed32c..e887317 100644
--- a/webrtc/modules/audio_coding/main/acm2/audio_coding_module_unittest_oldapi.cc
+++ b/webrtc/modules/audio_coding/main/acm2/audio_coding_module_unittest_oldapi.cc
@@ -87,7 +87,7 @@
       uint8_t payload_type,
       uint32_t timestamp,
       const uint8_t* payload_data,
-      uint16_t payload_len_bytes,
+      size_t payload_len_bytes,
       const RTPFragmentationHeader* fragmentation) OVERRIDE {
     CriticalSectionScoped lock(crit_sect_.get());
     ++num_calls_;
diff --git a/webrtc/modules/audio_coding/main/interface/audio_coding_module.h b/webrtc/modules/audio_coding/main/interface/audio_coding_module.h
index 8d73285..8dd5cdc 100644
--- a/webrtc/modules/audio_coding/main/interface/audio_coding_module.h
+++ b/webrtc/modules/audio_coding/main/interface/audio_coding_module.h
@@ -36,13 +36,12 @@
  public:
   virtual ~AudioPacketizationCallback() {}
 
-  virtual int32_t SendData(
-      FrameType frame_type,
-      uint8_t payload_type,
-      uint32_t timestamp,
-      const uint8_t* payload_data,
-      uint16_t payload_len_bytes,
-      const RTPFragmentationHeader* fragmentation) = 0;
+  virtual int32_t SendData(FrameType frame_type,
+                           uint8_t payload_type,
+                           uint32_t timestamp,
+                           const uint8_t* payload_data,
+                           size_t payload_len_bytes,
+                           const RTPFragmentationHeader* fragmentation) = 0;
 };
 
 // Callback class used for inband Dtmf detection
@@ -668,8 +667,8 @@
   //    0 if payload is successfully pushed in.
   //
   virtual int32_t IncomingPacket(const uint8_t* incoming_payload,
-                                       const int32_t payload_len_bytes,
-                                       const WebRtcRTPHeader& rtp_info) = 0;
+                                 const size_t payload_len_bytes,
+                                 const WebRtcRTPHeader& rtp_info) = 0;
 
   ///////////////////////////////////////////////////////////////////////////
   // int32_t IncomingPayload()
@@ -696,9 +695,9 @@
   //    0 if payload is successfully pushed in.
   //
   virtual int32_t IncomingPayload(const uint8_t* incoming_payload,
-                                        const int32_t payload_len_byte,
-                                        const uint8_t payload_type,
-                                        const uint32_t timestamp = 0) = 0;
+                                  const size_t payload_len_byte,
+                                  const uint8_t payload_type,
+                                  const uint32_t timestamp = 0) = 0;
 
   ///////////////////////////////////////////////////////////////////////////
   // int SetMinimumPlayoutDelay()
@@ -1090,12 +1089,12 @@
   // |incoming_payload| contains the RTP payload after the RTP header. Return
   // true if successful, false if not.
   virtual bool InsertPacket(const uint8_t* incoming_payload,
-                            int32_t payload_len_bytes,
+                            size_t payload_len_bytes,
                             const WebRtcRTPHeader& rtp_info) = 0;
 
   // TODO(henrik.lundin): Remove this method?
   virtual bool InsertPayload(const uint8_t* incoming_payload,
-                             int32_t payload_len_byte,
+                             size_t payload_len_byte,
                              uint8_t payload_type,
                              uint32_t timestamp) = 0;
 
diff --git a/webrtc/modules/audio_coding/main/test/Channel.cc b/webrtc/modules/audio_coding/main/test/Channel.cc
index 20ecf3a..aa9e6cd 100644
--- a/webrtc/modules/audio_coding/main/test/Channel.cc
+++ b/webrtc/modules/audio_coding/main/test/Channel.cc
@@ -13,18 +13,21 @@
 #include <assert.h>
 #include <iostream>
 
+#include "webrtc/base/format_macros.h"
 #include "webrtc/system_wrappers/interface/tick_util.h"
 #include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
 
 namespace webrtc {
 
-int32_t Channel::SendData(const FrameType frameType, const uint8_t payloadType,
-                          const uint32_t timeStamp, const uint8_t* payloadData,
-                          const uint16_t payloadSize,
+int32_t Channel::SendData(FrameType frameType,
+                          uint8_t payloadType,
+                          uint32_t timeStamp,
+                          const uint8_t* payloadData,
+                          size_t payloadSize,
                           const RTPFragmentationHeader* fragmentation) {
   WebRtcRTPHeader rtpInfo;
   int32_t status;
-  uint16_t payloadDataSize = payloadSize;
+  size_t payloadDataSize = payloadSize;
 
   rtpInfo.header.markerBit = false;
   rtpInfo.header.ssrc = 0;
@@ -52,8 +55,8 @@
         (fragmentation->fragmentationVectorSize == 2)) {
       // only 0x80 if we have multiple blocks
       _payloadData[0] = 0x80 + fragmentation->fragmentationPlType[1];
-      uint32_t REDheader = (((uint32_t) fragmentation->fragmentationTimeDiff[1])
-          << 10) + fragmentation->fragmentationLength[1];
+      size_t REDheader = (fragmentation->fragmentationTimeDiff[1] << 10) +
+          fragmentation->fragmentationLength[1];
       _payloadData[1] = uint8_t((REDheader >> 16) & 0x000000FF);
       _payloadData[2] = uint8_t((REDheader >> 8) & 0x000000FF);
       _payloadData[3] = uint8_t(REDheader & 0x000000FF);
@@ -72,7 +75,7 @@
       // single block (newest one)
       memcpy(_payloadData, payloadData + fragmentation->fragmentationOffset[0],
              fragmentation->fragmentationLength[0]);
-      payloadDataSize = uint16_t(fragmentation->fragmentationLength[0]);
+      payloadDataSize = fragmentation->fragmentationLength[0];
       rtpInfo.header.payloadType = fragmentation->fragmentationPlType[0];
     }
   } else {
@@ -121,7 +124,7 @@
 }
 
 // TODO(turajs): rewite this method.
-void Channel::CalcStatistics(WebRtcRTPHeader& rtpInfo, uint16_t payloadSize) {
+void Channel::CalcStatistics(WebRtcRTPHeader& rtpInfo, size_t payloadSize) {
   int n;
   if ((rtpInfo.header.payloadType != _lastPayloadType)
       && (_lastPayloadType != -1)) {
@@ -371,7 +374,7 @@
            payloadStats.frameSizeStats[k].frameSizeSample);
     printf("Average Rate.................. %.0f bits/sec\n",
            payloadStats.frameSizeStats[k].rateBitPerSec);
-    printf("Maximum Payload-Size.......... %d Bytes\n",
+    printf("Maximum Payload-Size.......... %" PRIuS " Bytes\n",
            payloadStats.frameSizeStats[k].maxPayloadLen);
     printf(
         "Maximum Instantaneous Rate.... %.0f bits/sec\n",
diff --git a/webrtc/modules/audio_coding/main/test/Channel.h b/webrtc/modules/audio_coding/main/test/Channel.h
index cdb99c0..4ab32b9 100644
--- a/webrtc/modules/audio_coding/main/test/Channel.h
+++ b/webrtc/modules/audio_coding/main/test/Channel.h
@@ -27,7 +27,7 @@
 // TODO(turajs): Write constructor for this structure.
 struct ACMTestFrameSizeStats {
   uint16_t frameSizeSample;
-  int16_t maxPayloadLen;
+  size_t maxPayloadLen;
   uint32_t numPackets;
   uint64_t totalPayloadLenByte;
   uint64_t totalEncodedSamples;
@@ -39,7 +39,7 @@
 struct ACMTestPayloadStats {
   bool newPacket;
   int16_t payloadType;
-  int16_t lastPayloadLenByte;
+  size_t lastPayloadLenByte;
   uint32_t lastTimestamp;
   ACMTestFrameSizeStats frameSizeStats[MAX_NUM_FRAMESIZES];
 };
@@ -51,9 +51,11 @@
   ~Channel();
 
   virtual int32_t SendData(
-      const FrameType frameType, const uint8_t payloadType,
-      const uint32_t timeStamp, const uint8_t* payloadData,
-      const uint16_t payloadSize,
+      FrameType frameType,
+      uint8_t payloadType,
+      uint32_t timeStamp,
+      const uint8_t* payloadData,
+      size_t payloadSize,
       const RTPFragmentationHeader* fragmentation) OVERRIDE;
 
   void RegisterReceiverACM(AudioCodingModule *acm);
@@ -93,7 +95,7 @@
   }
 
  private:
-  void CalcStatistics(WebRtcRTPHeader& rtpInfo, uint16_t payloadSize);
+  void CalcStatistics(WebRtcRTPHeader& rtpInfo, size_t payloadSize);
 
   AudioCodingModule* _receiverACM;
   uint16_t _seqNo;
diff --git a/webrtc/modules/audio_coding/main/test/EncodeDecodeTest.cc b/webrtc/modules/audio_coding/main/test/EncodeDecodeTest.cc
index 66fd220..27f5500 100644
--- a/webrtc/modules/audio_coding/main/test/EncodeDecodeTest.cc
+++ b/webrtc/modules/audio_coding/main/test/EncodeDecodeTest.cc
@@ -37,7 +37,7 @@
 int32_t TestPacketization::SendData(
     const FrameType /* frameType */, const uint8_t payloadType,
     const uint32_t timeStamp, const uint8_t* payloadData,
-    const uint16_t payloadSize,
+    const size_t payloadSize,
     const RTPFragmentationHeader* /* fragmentation */) {
   _rtpStream->Write(payloadType, timeStamp, _seqNo++, payloadData, payloadSize,
                     _frequency);
diff --git a/webrtc/modules/audio_coding/main/test/EncodeDecodeTest.h b/webrtc/modules/audio_coding/main/test/EncodeDecodeTest.h
index f6b5553..4ee4fa2 100644
--- a/webrtc/modules/audio_coding/main/test/EncodeDecodeTest.h
+++ b/webrtc/modules/audio_coding/main/test/EncodeDecodeTest.h
@@ -30,9 +30,11 @@
   TestPacketization(RTPStream *rtpStream, uint16_t frequency);
   ~TestPacketization();
   virtual int32_t SendData(
-      const FrameType frameType, const uint8_t payloadType,
-      const uint32_t timeStamp, const uint8_t* payloadData,
-      const uint16_t payloadSize,
+      const FrameType frameType,
+      const uint8_t payloadType,
+      const uint32_t timeStamp,
+      const uint8_t* payloadData,
+      const size_t payloadSize,
       const RTPFragmentationHeader* fragmentation) OVERRIDE;
 
  private:
@@ -92,8 +94,8 @@
   uint8_t _incomingPayload[MAX_INCOMING_PAYLOAD];
   RTPStream* _rtpStream;
   WebRtcRTPHeader _rtpInfo;
-  uint16_t _realPayloadSizeBytes;
-  uint16_t _payloadSizeBytes;
+  size_t _realPayloadSizeBytes;
+  size_t _payloadSizeBytes;
   uint32_t _nextTime;
 };
 
diff --git a/webrtc/modules/audio_coding/main/test/RTPFile.cc b/webrtc/modules/audio_coding/main/test/RTPFile.cc
index b7f587b..6f0c74e 100644
--- a/webrtc/modules/audio_coding/main/test/RTPFile.cc
+++ b/webrtc/modules/audio_coding/main/test/RTPFile.cc
@@ -11,6 +11,7 @@
 #include "RTPFile.h"
 
 #include <stdlib.h>
+#include <limits>
 
 #ifdef WIN32
 #   include <Winsock2.h>
@@ -60,7 +61,7 @@
 }
 
 RTPPacket::RTPPacket(uint8_t payloadType, uint32_t timeStamp, int16_t seqNo,
-                     const uint8_t* payloadData, uint16_t payloadSize,
+                     const uint8_t* payloadData, size_t payloadSize,
                      uint32_t frequency)
     : payloadType(payloadType),
       timeStamp(timeStamp),
@@ -87,7 +88,7 @@
 
 void RTPBuffer::Write(const uint8_t payloadType, const uint32_t timeStamp,
                       const int16_t seqNo, const uint8_t* payloadData,
-                      const uint16_t payloadSize, uint32_t frequency) {
+                      const size_t payloadSize, uint32_t frequency) {
   RTPPacket *packet = new RTPPacket(payloadType, timeStamp, seqNo, payloadData,
                                     payloadSize, frequency);
   _queueRWLock->AcquireLockExclusive();
@@ -95,8 +96,8 @@
   _queueRWLock->ReleaseLockExclusive();
 }
 
-uint16_t RTPBuffer::Read(WebRtcRTPHeader* rtpInfo, uint8_t* payloadData,
-                         uint16_t payloadSize, uint32_t* offset) {
+size_t RTPBuffer::Read(WebRtcRTPHeader* rtpInfo, uint8_t* payloadData,
+                       size_t payloadSize, uint32_t* offset) {
   _queueRWLock->AcquireLockShared();
   RTPPacket *packet = _rtpQueue.front();
   _rtpQueue.pop();
@@ -143,21 +144,11 @@
   fprintf(_rtpFile, "#!RTPencode%s\n", "1.0");
   uint32_t dummy_variable = 0;
   // should be converted to network endian format, but does not matter when 0
-  if (fwrite(&dummy_variable, 4, 1, _rtpFile) != 1) {
-    return;
-  }
-  if (fwrite(&dummy_variable, 4, 1, _rtpFile) != 1) {
-    return;
-  }
-  if (fwrite(&dummy_variable, 4, 1, _rtpFile) != 1) {
-    return;
-  }
-  if (fwrite(&dummy_variable, 2, 1, _rtpFile) != 1) {
-    return;
-  }
-  if (fwrite(&dummy_variable, 2, 1, _rtpFile) != 1) {
-    return;
-  }
+  EXPECT_EQ(1u, fwrite(&dummy_variable, 4, 1, _rtpFile));
+  EXPECT_EQ(1u, fwrite(&dummy_variable, 4, 1, _rtpFile));
+  EXPECT_EQ(1u, fwrite(&dummy_variable, 4, 1, _rtpFile));
+  EXPECT_EQ(1u, fwrite(&dummy_variable, 2, 1, _rtpFile));
+  EXPECT_EQ(1u, fwrite(&dummy_variable, 2, 1, _rtpFile));
   fflush(_rtpFile);
 }
 
@@ -180,35 +171,26 @@
 
 void RTPFile::Write(const uint8_t payloadType, const uint32_t timeStamp,
                     const int16_t seqNo, const uint8_t* payloadData,
-                    const uint16_t payloadSize, uint32_t frequency) {
+                    const size_t payloadSize, uint32_t frequency) {
   /* write RTP packet to file */
   uint8_t rtpHeader[12];
   MakeRTPheader(rtpHeader, payloadType, seqNo, timeStamp, 0);
-  uint16_t lengthBytes = htons(12 + payloadSize + 8);
-  uint16_t plen = htons(12 + payloadSize);
+  ASSERT_LE(12 + payloadSize + 8, std::numeric_limits<u_short>::max());
+  uint16_t lengthBytes = htons(static_cast<u_short>(12 + payloadSize + 8));
+  uint16_t plen = htons(static_cast<u_short>(12 + payloadSize));
   uint32_t offsetMs;
 
   offsetMs = (timeStamp / (frequency / 1000));
   offsetMs = htonl(offsetMs);
-  if (fwrite(&lengthBytes, 2, 1, _rtpFile) != 1) {
-    return;
-  }
-  if (fwrite(&plen, 2, 1, _rtpFile) != 1) {
-    return;
-  }
-  if (fwrite(&offsetMs, 4, 1, _rtpFile) != 1) {
-    return;
-  }
-  if (fwrite(rtpHeader, 12, 1, _rtpFile) != 1) {
-    return;
-  }
-  if (fwrite(payloadData, 1, payloadSize, _rtpFile) != payloadSize) {
-    return;
-  }
+  EXPECT_EQ(1u, fwrite(&lengthBytes, 2, 1, _rtpFile));
+  EXPECT_EQ(1u, fwrite(&plen, 2, 1, _rtpFile));
+  EXPECT_EQ(1u, fwrite(&offsetMs, 4, 1, _rtpFile));
+  EXPECT_EQ(1u, fwrite(&rtpHeader, 12, 1, _rtpFile));
+  EXPECT_EQ(payloadSize, fwrite(payloadData, 1, payloadSize, _rtpFile));
 }
 
-uint16_t RTPFile::Read(WebRtcRTPHeader* rtpInfo, uint8_t* payloadData,
-                       uint16_t payloadSize, uint32_t* offset) {
+size_t RTPFile::Read(WebRtcRTPHeader* rtpInfo, uint8_t* payloadData,
+                     size_t payloadSize, uint32_t* offset) {
   uint16_t lengthBytes;
   uint16_t plen;
   uint8_t rtpHeader[12];
@@ -237,7 +219,7 @@
   if (lengthBytes < 20) {
     return 0;
   }
-  if (payloadSize < (lengthBytes - 20)) {
+  if (payloadSize < static_cast<size_t>((lengthBytes - 20))) {
     return 0;
   }
   lengthBytes -= 20;
diff --git a/webrtc/modules/audio_coding/main/test/RTPFile.h b/webrtc/modules/audio_coding/main/test/RTPFile.h
index 460553b..9a2d43a 100644
--- a/webrtc/modules/audio_coding/main/test/RTPFile.h
+++ b/webrtc/modules/audio_coding/main/test/RTPFile.h
@@ -28,12 +28,12 @@
 
   virtual void Write(const uint8_t payloadType, const uint32_t timeStamp,
                      const int16_t seqNo, const uint8_t* payloadData,
-                     const uint16_t payloadSize, uint32_t frequency) = 0;
+                     const size_t payloadSize, uint32_t frequency) = 0;
 
   // Returns the packet's payload size. Zero should be treated as an
   // end-of-stream (in the case that EndOfFile() is true) or an error.
-  virtual uint16_t Read(WebRtcRTPHeader* rtpInfo, uint8_t* payloadData,
-                        uint16_t payloadSize, uint32_t* offset) = 0;
+  virtual size_t Read(WebRtcRTPHeader* rtpInfo, uint8_t* payloadData,
+                      size_t payloadSize, uint32_t* offset) = 0;
   virtual bool EndOfFile() const = 0;
 
  protected:
@@ -46,7 +46,7 @@
 class RTPPacket {
  public:
   RTPPacket(uint8_t payloadType, uint32_t timeStamp, int16_t seqNo,
-            const uint8_t* payloadData, uint16_t payloadSize,
+            const uint8_t* payloadData, size_t payloadSize,
             uint32_t frequency);
 
   ~RTPPacket();
@@ -55,7 +55,7 @@
   uint32_t timeStamp;
   int16_t seqNo;
   uint8_t* payloadData;
-  uint16_t payloadSize;
+  size_t payloadSize;
   uint32_t frequency;
 };
 
@@ -67,10 +67,10 @@
 
   virtual void Write(const uint8_t payloadType, const uint32_t timeStamp,
                      const int16_t seqNo, const uint8_t* payloadData,
-                     const uint16_t payloadSize, uint32_t frequency) OVERRIDE;
+                     const size_t payloadSize, uint32_t frequency) OVERRIDE;
 
-  virtual uint16_t Read(WebRtcRTPHeader* rtpInfo, uint8_t* payloadData,
-                        uint16_t payloadSize, uint32_t* offset) OVERRIDE;
+  virtual size_t Read(WebRtcRTPHeader* rtpInfo, uint8_t* payloadData,
+                      size_t payloadSize, uint32_t* offset) OVERRIDE;
 
   virtual bool EndOfFile() const OVERRIDE;
 
@@ -99,10 +99,10 @@
 
   virtual void Write(const uint8_t payloadType, const uint32_t timeStamp,
                      const int16_t seqNo, const uint8_t* payloadData,
-                     const uint16_t payloadSize, uint32_t frequency) OVERRIDE;
+                     const size_t payloadSize, uint32_t frequency) OVERRIDE;
 
-  virtual uint16_t Read(WebRtcRTPHeader* rtpInfo, uint8_t* payloadData,
-                        uint16_t payloadSize, uint32_t* offset) OVERRIDE;
+  virtual size_t Read(WebRtcRTPHeader* rtpInfo, uint8_t* payloadData,
+                      size_t payloadSize, uint32_t* offset) OVERRIDE;
 
   virtual bool EndOfFile() const OVERRIDE {
     return _rtpEOF;
diff --git a/webrtc/modules/audio_coding/main/test/TestAllCodecs.cc b/webrtc/modules/audio_coding/main/test/TestAllCodecs.cc
index 9b7667b..cd5a94e 100644
--- a/webrtc/modules/audio_coding/main/test/TestAllCodecs.cc
+++ b/webrtc/modules/audio_coding/main/test/TestAllCodecs.cc
@@ -10,7 +10,8 @@
 
 #include "webrtc/modules/audio_coding/main/test/TestAllCodecs.h"
 
-#include <stdio.h>
+#include <cstdio>
+#include <limits>
 #include <string>
 
 #include "testing/gtest/include/gtest/gtest.h"
@@ -32,6 +33,10 @@
 // The test loops through all available mono codecs, encode at "a" sends over
 // the channel, and decodes at "b".
 
+namespace {
+const size_t kVariableSize = std::numeric_limits<size_t>::max();
+}
+
 namespace webrtc {
 
 // Class for simulating packet handling.
@@ -54,7 +59,7 @@
 
 int32_t TestPack::SendData(FrameType frame_type, uint8_t payload_type,
                            uint32_t timestamp, const uint8_t* payload_data,
-                           uint16_t payload_size,
+                           size_t payload_size,
                            const RTPFragmentationHeader* fragmentation) {
   WebRtcRTPHeader rtp_info;
   int32_t status;
@@ -87,7 +92,7 @@
   return status;
 }
 
-uint16_t TestPack::payload_size() {
+size_t TestPack::payload_size() {
   return payload_size_;
 }
 
@@ -459,13 +464,13 @@
   test_count_++;
   OpenOutFile(test_count_);
   char codec_isac[] = "ISAC";
-  RegisterSendCodec('A', codec_isac, 16000, -1, 480, -1);
+  RegisterSendCodec('A', codec_isac, 16000, -1, 480, kVariableSize);
   Run(channel_a_to_b_);
-  RegisterSendCodec('A', codec_isac, 16000, -1, 960, -1);
+  RegisterSendCodec('A', codec_isac, 16000, -1, 960, kVariableSize);
   Run(channel_a_to_b_);
-  RegisterSendCodec('A', codec_isac, 16000, 15000, 480, -1);
+  RegisterSendCodec('A', codec_isac, 16000, 15000, 480, kVariableSize);
   Run(channel_a_to_b_);
-  RegisterSendCodec('A', codec_isac, 16000, 32000, 960, -1);
+  RegisterSendCodec('A', codec_isac, 16000, 32000, 960, kVariableSize);
   Run(channel_a_to_b_);
   outfile_b_.Close();
 #endif
@@ -475,13 +480,13 @@
   }
   test_count_++;
   OpenOutFile(test_count_);
-  RegisterSendCodec('A', codec_isac, 32000, -1, 960, -1);
+  RegisterSendCodec('A', codec_isac, 32000, -1, 960, kVariableSize);
   Run(channel_a_to_b_);
-  RegisterSendCodec('A', codec_isac, 32000, 56000, 960, -1);
+  RegisterSendCodec('A', codec_isac, 32000, 56000, 960, kVariableSize);
   Run(channel_a_to_b_);
-  RegisterSendCodec('A', codec_isac, 32000, 37000, 960, -1);
+  RegisterSendCodec('A', codec_isac, 32000, 37000, 960, kVariableSize);
   Run(channel_a_to_b_);
-  RegisterSendCodec('A', codec_isac, 32000, 32000, 960, -1);
+  RegisterSendCodec('A', codec_isac, 32000, 32000, 960, kVariableSize);
   Run(channel_a_to_b_);
   outfile_b_.Close();
 #endif
@@ -611,19 +616,19 @@
   test_count_++;
   OpenOutFile(test_count_);
   char codec_opus[] = "OPUS";
-  RegisterSendCodec('A', codec_opus, 48000, 6000, 480, -1);
+  RegisterSendCodec('A', codec_opus, 48000, 6000, 480, kVariableSize);
   Run(channel_a_to_b_);
-  RegisterSendCodec('A', codec_opus, 48000, 20000, 480*2, -1);
+  RegisterSendCodec('A', codec_opus, 48000, 20000, 480*2, kVariableSize);
   Run(channel_a_to_b_);
-  RegisterSendCodec('A', codec_opus, 48000, 32000, 480*4, -1);
+  RegisterSendCodec('A', codec_opus, 48000, 32000, 480*4, kVariableSize);
   Run(channel_a_to_b_);
-  RegisterSendCodec('A', codec_opus, 48000, 48000, 480, -1);
+  RegisterSendCodec('A', codec_opus, 48000, 48000, 480, kVariableSize);
   Run(channel_a_to_b_);
-  RegisterSendCodec('A', codec_opus, 48000, 64000, 480*4, -1);
+  RegisterSendCodec('A', codec_opus, 48000, 64000, 480*4, kVariableSize);
   Run(channel_a_to_b_);
-  RegisterSendCodec('A', codec_opus, 48000, 96000, 480*6, -1);
+  RegisterSendCodec('A', codec_opus, 48000, 96000, 480*6, kVariableSize);
   Run(channel_a_to_b_);
-  RegisterSendCodec('A', codec_opus, 48000, 500000, 480*2, -1);
+  RegisterSendCodec('A', codec_opus, 48000, 500000, 480*2, kVariableSize);
   Run(channel_a_to_b_);
   outfile_b_.Close();
 #endif
@@ -686,10 +691,11 @@
 //         packet_size      - packet size in samples
 //         extra_byte       - if extra bytes needed compared to the bitrate
 //                            used when registering, can be an internal header
-//                            set to -1 if the codec is a variable rate codec
+//                            set to kVariableSize if the codec is a variable
+//                            rate codec
 void TestAllCodecs::RegisterSendCodec(char side, char* codec_name,
                                       int32_t sampling_freq_hz, int rate,
-                                      int packet_size, int extra_byte) {
+                                      int packet_size, size_t extra_byte) {
   if (test_mode_ != 0) {
     // Print out codec and settings.
     printf("codec: %s Freq: %d Rate: %d PackSize: %d\n", codec_name,
@@ -711,14 +717,14 @@
 
   // Store the expected packet size in bytes, used to validate the received
   // packet. If variable rate codec (extra_byte == -1), set to -1.
-  if (extra_byte != -1) {
+  if (extra_byte != kVariableSize) {
     // Add 0.875 to always round up to a whole byte
-    packet_size_bytes_ = static_cast<int>(static_cast<float>(packet_size
-        * rate) / static_cast<float>(sampling_freq_hz * 8) + 0.875)
-        + extra_byte;
+    packet_size_bytes_ = static_cast<size_t>(
+        static_cast<float>(packet_size * rate) /
+        static_cast<float>(sampling_freq_hz * 8) + 0.875) + extra_byte;
   } else {
     // Packets will have a variable size.
-    packet_size_bytes_ = -1;
+    packet_size_bytes_ = kVariableSize;
   }
 
   // Set pointer to the ACM where to register the codec.
@@ -751,7 +757,7 @@
   AudioFrame audio_frame;
 
   int32_t out_freq_hz = outfile_b_.SamplingFrequency();
-  uint16_t receive_size;
+  size_t receive_size;
   uint32_t timestamp_diff;
   channel->reset_payload_size();
   int error_count = 0;
@@ -768,8 +774,8 @@
     // Verify that the received packet size matches the settings.
     receive_size = channel->payload_size();
     if (receive_size) {
-      if ((static_cast<int>(receive_size) != packet_size_bytes_) &&
-          (packet_size_bytes_ > -1)) {
+      if ((receive_size != packet_size_bytes_) &&
+          (packet_size_bytes_ != kVariableSize)) {
         error_count++;
       }
 
diff --git a/webrtc/modules/audio_coding/main/test/TestAllCodecs.h b/webrtc/modules/audio_coding/main/test/TestAllCodecs.h
index 2fbf9ef..42d65a1 100644
--- a/webrtc/modules/audio_coding/main/test/TestAllCodecs.h
+++ b/webrtc/modules/audio_coding/main/test/TestAllCodecs.h
@@ -29,12 +29,14 @@
   void RegisterReceiverACM(AudioCodingModule* acm);
 
   virtual int32_t SendData(
-      FrameType frame_type, uint8_t payload_type,
-      uint32_t timestamp, const uint8_t* payload_data,
-      uint16_t payload_size,
+      FrameType frame_type,
+      uint8_t payload_type,
+      uint32_t timestamp,
+      const uint8_t* payload_data,
+      size_t payload_size,
       const RTPFragmentationHeader* fragmentation) OVERRIDE;
 
-  uint16_t payload_size();
+  size_t payload_size();
   uint32_t timestamp_diff();
   void reset_payload_size();
 
@@ -45,7 +47,7 @@
   uint32_t timestamp_diff_;
   uint32_t last_in_timestamp_;
   uint64_t total_bytes_;
-  uint16_t payload_size_;
+  size_t payload_size_;
 };
 
 class TestAllCodecs : public ACMTest {
@@ -61,7 +63,7 @@
   // This is useful for codecs which support several sampling frequency.
   // Note! Only mono mode is tested in this test.
   void RegisterSendCodec(char side, char* codec_name, int32_t sampling_freq_hz,
-                         int rate, int packet_size, int extra_byte);
+                         int rate, int packet_size, size_t extra_byte);
 
   void Run(TestPack* channel);
   void OpenOutFile(int test_number);
@@ -75,7 +77,7 @@
   PCMFile outfile_b_;
   int test_count_;
   int packet_size_samples_;
-  int packet_size_bytes_;
+  size_t packet_size_bytes_;
 };
 
 }  // namespace webrtc
diff --git a/webrtc/modules/audio_coding/main/test/TestStereo.cc b/webrtc/modules/audio_coding/main/test/TestStereo.cc
index 9c22548..86a75e5 100644
--- a/webrtc/modules/audio_coding/main/test/TestStereo.cc
+++ b/webrtc/modules/audio_coding/main/test/TestStereo.cc
@@ -48,7 +48,7 @@
                                  const uint8_t payload_type,
                                  const uint32_t timestamp,
                                  const uint8_t* payload_data,
-                                 const uint16_t payload_size,
+                                 const size_t payload_size,
                                  const RTPFragmentationHeader* fragmentation) {
   WebRtcRTPHeader rtp_info;
   int32_t status = 0;
@@ -114,18 +114,26 @@
       test_cntr_(0),
       pack_size_samp_(0),
       pack_size_bytes_(0),
-      counter_(0),
-      g722_pltype_(0),
-      l16_8khz_pltype_(-1),
-      l16_16khz_pltype_(-1),
-      l16_32khz_pltype_(-1),
-      pcma_pltype_(-1),
-      pcmu_pltype_(-1),
-      celt_pltype_(-1),
-      opus_pltype_(-1),
-      cn_8khz_pltype_(-1),
-      cn_16khz_pltype_(-1),
-      cn_32khz_pltype_(-1) {
+      counter_(0)
+#ifdef WEBRTC_CODEC_G722
+      , g722_pltype_(0)
+#endif
+#ifdef WEBRTC_CODEC_PCM16
+      , l16_8khz_pltype_(-1)
+      , l16_16khz_pltype_(-1)
+      , l16_32khz_pltype_(-1)
+#endif
+#ifdef PCMA_AND_PCMU
+      , pcma_pltype_(-1)
+      , pcmu_pltype_(-1)
+#endif
+#ifdef WEBRTC_CODEC_CELT
+      , celt_pltype_(-1)
+#endif
+#ifdef WEBRTC_CODEC_OPUS
+      , opus_pltype_(-1)
+#endif
+      {
   // test_mode = 0 for silent test (auto test)
   test_mode_ = test_mode;
 }
@@ -302,7 +310,6 @@
   Run(channel_a2b_, audio_channels, codec_channels);
   out_file_.Close();
 #endif
-#define PCMA_AND_PCMU
 #ifdef PCMA_AND_PCMU
   if (test_mode_ != 0) {
     printf("===========================================================\n");
diff --git a/webrtc/modules/audio_coding/main/test/TestStereo.h b/webrtc/modules/audio_coding/main/test/TestStereo.h
index 8aefa7f..0eb0e52 100644
--- a/webrtc/modules/audio_coding/main/test/TestStereo.h
+++ b/webrtc/modules/audio_coding/main/test/TestStereo.h
@@ -18,6 +18,8 @@
 #include "webrtc/modules/audio_coding/main/test/Channel.h"
 #include "webrtc/modules/audio_coding/main/test/PCMFile.h"
 
+#define PCMA_AND_PCMU
+
 namespace webrtc {
 
 enum StereoMonoMode {
@@ -38,7 +40,7 @@
       const uint8_t payload_type,
       const uint32_t timestamp,
       const uint8_t* payload_data,
-      const uint16_t payload_size,
+      const size_t payload_size,
       const RTPFragmentationHeader* fragmentation) OVERRIDE;
 
   uint16_t payload_size();
@@ -78,11 +80,6 @@
   void OpenOutFile(int16_t test_number);
   void DisplaySendReceiveCodec();
 
-  int32_t SendData(const FrameType frame_type, const uint8_t payload_type,
-                   const uint32_t timestamp, const uint8_t* payload_data,
-                   const uint16_t payload_size,
-                   const RTPFragmentationHeader* fragmentation);
-
   int test_mode_;
 
   scoped_ptr<AudioCodingModule> acm_a_;
@@ -100,17 +97,24 @@
   char* send_codec_name_;
 
   // Payload types for stereo codecs and CNG
+#ifdef WEBRTC_CODEC_G722
   int g722_pltype_;
+#endif
+#ifdef WEBRTC_CODEC_PCM16
   int l16_8khz_pltype_;
   int l16_16khz_pltype_;
   int l16_32khz_pltype_;
+#endif
+#ifdef PCMA_AND_PCMU
   int pcma_pltype_;
   int pcmu_pltype_;
+#endif
+#ifdef WEBRTC_CODEC_CELT
   int celt_pltype_;
+#endif
+#ifdef WEBRTC_CODEC_OPUS
   int opus_pltype_;
-  int cn_8khz_pltype_;
-  int cn_16khz_pltype_;
-  int cn_32khz_pltype_;
+#endif
 };
 
 }  // namespace webrtc
diff --git a/webrtc/modules/audio_coding/main/test/dual_stream_unittest.cc b/webrtc/modules/audio_coding/main/test/dual_stream_unittest.cc
index 7cd2466..9b960af 100644
--- a/webrtc/modules/audio_coding/main/test/dual_stream_unittest.cc
+++ b/webrtc/modules/audio_coding/main/test/dual_stream_unittest.cc
@@ -36,9 +36,11 @@
   void ApiTest();
 
   virtual int32_t SendData(
-      FrameType frameType, uint8_t payload_type,
-      uint32_t timestamp, const uint8_t* payload_data,
-      uint16_t payload_size,
+      FrameType frameType,
+      uint8_t payload_type,
+      uint32_t timestamp,
+      const uint8_t* payload_data,
+      size_t payload_size,
       const RTPFragmentationHeader* fragmentation) OVERRIDE;
 
   void Perform(bool start_in_sync, int num_channels_input);
@@ -49,9 +51,9 @@
   void PopulateCodecInstances(int frame_size_primary_ms,
                               int num_channels_primary, int sampling_rate);
 
-  void Validate(bool start_in_sync, int tolerance);
+  void Validate(bool start_in_sync, size_t tolerance);
   bool EqualTimestamp(int stream, int position);
-  int EqualPayloadLength(int stream, int position);
+  size_t EqualPayloadLength(int stream, int position);
   bool EqualPayloadData(int stream, int position);
 
   static const int kMaxNumStoredPayloads = 2;
@@ -77,8 +79,8 @@
   uint32_t timestamp_ref_[kMaxNumStreams][kMaxNumStoredPayloads];
   uint32_t timestamp_dual_[kMaxNumStreams][kMaxNumStoredPayloads];
 
-  int payload_len_ref_[kMaxNumStreams][kMaxNumStoredPayloads];
-  int payload_len_dual_[kMaxNumStreams][kMaxNumStoredPayloads];
+  size_t payload_len_ref_[kMaxNumStreams][kMaxNumStoredPayloads];
+  size_t payload_len_dual_[kMaxNumStreams][kMaxNumStoredPayloads];
 
   uint8_t payload_data_ref_[kMaxNumStreams][MAX_PAYLOAD_SIZE_BYTE
       * kMaxNumStoredPayloads];
@@ -174,7 +176,7 @@
   pcm_file.ReadStereo(num_channels_input == 2);
   AudioFrame audio_frame;
 
-  int tolerance = 0;
+  size_t tolerance = 0;
   if (num_channels_input == 2 && primary_encoder_.channels == 2
       && secondary_encoder_.channels == 1) {
     tolerance = 12;
@@ -253,10 +255,10 @@
   return true;
 }
 
-int DualStreamTest::EqualPayloadLength(int stream_index, int position) {
-  return abs(
-      payload_len_dual_[stream_index][position]
-          - payload_len_ref_[stream_index][position]);
+size_t DualStreamTest::EqualPayloadLength(int stream_index, int position) {
+  size_t dual = payload_len_dual_[stream_index][position];
+  size_t ref = payload_len_ref_[stream_index][position];
+  return (dual > ref) ? (dual - ref) : (ref - dual);
 }
 
 bool DualStreamTest::EqualPayloadData(int stream_index, int position) {
@@ -264,7 +266,7 @@
       payload_len_dual_[stream_index][position]
           == payload_len_ref_[stream_index][position]);
   int offset = position * MAX_PAYLOAD_SIZE_BYTE;
-  for (int n = 0; n < payload_len_dual_[stream_index][position]; n++) {
+  for (size_t n = 0; n < payload_len_dual_[stream_index][position]; n++) {
     if (payload_data_dual_[stream_index][offset + n]
         != payload_data_ref_[stream_index][offset + n]) {
       return false;
@@ -273,9 +275,9 @@
   return true;
 }
 
-void DualStreamTest::Validate(bool start_in_sync, int tolerance) {
+void DualStreamTest::Validate(bool start_in_sync, size_t tolerance) {
   for (int stream_index = 0; stream_index < kMaxNumStreams; stream_index++) {
-    int my_tolerance = stream_index == kPrimary ? 0 : tolerance;
+    size_t my_tolerance = stream_index == kPrimary ? 0 : tolerance;
     for (int position = 0; position < kMaxNumStoredPayloads; position++) {
       if (payload_ref_is_stored_[stream_index][position] == 1
           && payload_dual_is_stored_[stream_index][position] == 1) {
@@ -296,7 +298,7 @@
 int32_t DualStreamTest::SendData(FrameType frameType, uint8_t payload_type,
                                  uint32_t timestamp,
                                  const uint8_t* payload_data,
-                                 uint16_t payload_size,
+                                 size_t payload_size,
                                  const RTPFragmentationHeader* fragmentation) {
   int position;
   int stream_index;
diff --git a/webrtc/modules/audio_coding/main/test/target_delay_unittest.cc b/webrtc/modules/audio_coding/main/test/target_delay_unittest.cc
index 02b8467..a902499 100644
--- a/webrtc/modules/audio_coding/main/test/target_delay_unittest.cc
+++ b/webrtc/modules/audio_coding/main/test/target_delay_unittest.cc
@@ -46,7 +46,7 @@
 
     int16_t audio[kFrameSizeSamples];
     const int kRange = 0x7FF;  // 2047, easy for masking.
-    for (int n = 0; n < kFrameSizeSamples; ++n)
+    for (size_t n = 0; n < kFrameSizeSamples; ++n)
       audio[n] = (rand() & kRange) - kRange / 2;
     WebRtcPcm16b_Encode(audio, kFrameSizeSamples, payload_);
   }
@@ -133,7 +133,7 @@
  private:
   static const int kSampleRateHz = 16000;
   static const int kNum10msPerFrame = 2;
-  static const int kFrameSizeSamples = 320;  // 20 ms @ 16 kHz.
+  static const size_t kFrameSizeSamples = 320;  // 20 ms @ 16 kHz.
   // payload-len = frame-samples * 2 bytes/sample.
   static const int kPayloadLenBytes = 320 * 2;
   // Inter-arrival time in number of packets in a jittery channel. One is no
diff --git a/webrtc/modules/audio_coding/neteq/dtmf_buffer.cc b/webrtc/modules/audio_coding/neteq/dtmf_buffer.cc
index 91debee..b07d561 100644
--- a/webrtc/modules/audio_coding/neteq/dtmf_buffer.cc
+++ b/webrtc/modules/audio_coding/neteq/dtmf_buffer.cc
@@ -55,7 +55,7 @@
 //
 int DtmfBuffer::ParseEvent(uint32_t rtp_timestamp,
                            const uint8_t* payload,
-                           int payload_length_bytes,
+                           size_t payload_length_bytes,
                            DtmfEvent* event) {
   if (!payload || !event) {
     return kInvalidPointer;
diff --git a/webrtc/modules/audio_coding/neteq/dtmf_buffer.h b/webrtc/modules/audio_coding/neteq/dtmf_buffer.h
index 5dd31c2..5da3a16 100644
--- a/webrtc/modules/audio_coding/neteq/dtmf_buffer.h
+++ b/webrtc/modules/audio_coding/neteq/dtmf_buffer.h
@@ -69,7 +69,7 @@
   // |rtp_timestamp| is simply copied into the struct.
   static int ParseEvent(uint32_t rtp_timestamp,
                         const uint8_t* payload,
-                        int payload_length_bytes,
+                        size_t payload_length_bytes,
                         DtmfEvent* event);
 
   // Inserts |event| into the buffer. The method looks for a matching event and
diff --git a/webrtc/modules/audio_coding/neteq/interface/neteq.h b/webrtc/modules/audio_coding/neteq/interface/neteq.h
index 560e77b..b630e86 100644
--- a/webrtc/modules/audio_coding/neteq/interface/neteq.h
+++ b/webrtc/modules/audio_coding/neteq/interface/neteq.h
@@ -132,7 +132,7 @@
   // Returns 0 on success, -1 on failure.
   virtual int InsertPacket(const WebRtcRTPHeader& rtp_header,
                            const uint8_t* payload,
-                           int length_bytes,
+                           size_t length_bytes,
                            uint32_t receive_timestamp) = 0;
 
   // Inserts a sync-packet into packet queue. Sync-packets are decoded to
diff --git a/webrtc/modules/audio_coding/neteq/mock/mock_payload_splitter.h b/webrtc/modules/audio_coding/neteq/mock/mock_payload_splitter.h
index 09fa4e1..9fa05e9 100644
--- a/webrtc/modules/audio_coding/neteq/mock/mock_payload_splitter.h
+++ b/webrtc/modules/audio_coding/neteq/mock/mock_payload_splitter.h
@@ -28,11 +28,11 @@
   MOCK_METHOD2(SplitAudio,
       int(PacketList* packet_list, const DecoderDatabase& decoder_database));
   MOCK_METHOD4(SplitBySamples,
-      void(const Packet* packet, int bytes_per_ms, int timestamps_per_ms,
-           PacketList* new_packets));
+      void(const Packet* packet, size_t bytes_per_ms,
+           uint32_t timestamps_per_ms, PacketList* new_packets));
   MOCK_METHOD4(SplitByFrames,
-      int(const Packet* packet, int bytes_per_frame, int timestamps_per_frame,
-          PacketList* new_packets));
+      int(const Packet* packet, size_t bytes_per_frame,
+          uint32_t timestamps_per_frame, PacketList* new_packets));
 };
 
 }  // namespace webrtc
diff --git a/webrtc/modules/audio_coding/neteq/neteq_external_decoder_unittest.cc b/webrtc/modules/audio_coding/neteq/neteq_external_decoder_unittest.cc
index d41bc54..ae2d1ae 100644
--- a/webrtc/modules/audio_coding/neteq/neteq_external_decoder_unittest.cc
+++ b/webrtc/modules/audio_coding/neteq/neteq_external_decoder_unittest.cc
@@ -203,7 +203,7 @@
   int sample_rate_hz_;
   int samples_per_ms_;
   const int frame_size_ms_;
-  int frame_size_samples_;
+  size_t frame_size_samples_;
   int output_size_samples_;
   NetEq* neteq_external_;
   NetEq* neteq_;
@@ -214,7 +214,7 @@
   int16_t output_[kMaxBlockSize];
   int16_t output_external_[kMaxBlockSize];
   WebRtcRTPHeader rtp_header_;
-  int payload_size_bytes_;
+  size_t payload_size_bytes_;
   int last_send_time_;
   int last_arrival_time_;
   scoped_ptr<test::InputAudioFile> input_file_;
diff --git a/webrtc/modules/audio_coding/neteq/neteq_impl.cc b/webrtc/modules/audio_coding/neteq/neteq_impl.cc
index 7e8af3c..958eb76 100644
--- a/webrtc/modules/audio_coding/neteq/neteq_impl.cc
+++ b/webrtc/modules/audio_coding/neteq/neteq_impl.cc
@@ -117,7 +117,7 @@
 
 int NetEqImpl::InsertPacket(const WebRtcRTPHeader& rtp_header,
                             const uint8_t* payload,
-                            int length_bytes,
+                            size_t length_bytes,
                             uint32_t receive_timestamp) {
   CriticalSectionScoped lock(crit_sect_.get());
   LOG(LS_VERBOSE) << "InsertPacket: ts=" << rtp_header.header.timestamp <<
@@ -399,7 +399,7 @@
 
 int NetEqImpl::InsertPacketInternal(const WebRtcRTPHeader& rtp_header,
                                     const uint8_t* payload,
-                                    int length_bytes,
+                                    size_t length_bytes,
                                     uint32_t receive_timestamp,
                                     bool is_sync_packet) {
   if (!payload) {
@@ -1241,7 +1241,7 @@
     assert(*operation == kNormal || *operation == kAccelerate ||
            *operation == kMerge || *operation == kPreemptiveExpand);
     packet_list->pop_front();
-    int payload_length = packet->payload_length;
+    size_t payload_length = packet->payload_length;
     int16_t decode_length;
     if (packet->sync_packet) {
       // Decode to silence with the same frame size as the last decode.
diff --git a/webrtc/modules/audio_coding/neteq/neteq_impl.h b/webrtc/modules/audio_coding/neteq/neteq_impl.h
index 348f483..fa96512 100644
--- a/webrtc/modules/audio_coding/neteq/neteq_impl.h
+++ b/webrtc/modules/audio_coding/neteq/neteq_impl.h
@@ -81,7 +81,7 @@
   // Returns 0 on success, -1 on failure.
   virtual int InsertPacket(const WebRtcRTPHeader& rtp_header,
                            const uint8_t* payload,
-                           int length_bytes,
+                           size_t length_bytes,
                            uint32_t receive_timestamp) OVERRIDE;
 
   // Inserts a sync-packet into packet queue. Sync-packets are decoded to
@@ -210,7 +210,7 @@
   // TODO(hlundin): Merge this with InsertPacket above?
   int InsertPacketInternal(const WebRtcRTPHeader& rtp_header,
                            const uint8_t* payload,
-                           int length_bytes,
+                           size_t length_bytes,
                            uint32_t receive_timestamp,
                            bool is_sync_packet)
       EXCLUSIVE_LOCKS_REQUIRED(crit_sect_);
diff --git a/webrtc/modules/audio_coding/neteq/neteq_impl_unittest.cc b/webrtc/modules/audio_coding/neteq/neteq_impl_unittest.cc
index 56ea425..89a4d42 100644
--- a/webrtc/modules/audio_coding/neteq/neteq_impl_unittest.cc
+++ b/webrtc/modules/audio_coding/neteq/neteq_impl_unittest.cc
@@ -253,7 +253,7 @@
 
 TEST_F(NetEqImplTest, InsertPacket) {
   CreateInstance();
-  const int kPayloadLength = 100;
+  const size_t kPayloadLength = 100;
   const uint8_t kPayloadType = 0;
   const uint16_t kFirstSequenceNumber = 0x1234;
   const uint32_t kFirstTimestamp = 0x12345678;
diff --git a/webrtc/modules/audio_coding/neteq/neteq_unittest.cc b/webrtc/modules/audio_coding/neteq/neteq_unittest.cc
index 7ed9a87..0ee1d06 100644
--- a/webrtc/modules/audio_coding/neteq/neteq_unittest.cc
+++ b/webrtc/modules/audio_coding/neteq/neteq_unittest.cc
@@ -192,7 +192,7 @@
   static const int kBlockSize8kHz = kTimeStepMs * 8;
   static const int kBlockSize16kHz = kTimeStepMs * 16;
   static const int kBlockSize32kHz = kTimeStepMs * 32;
-  static const int kMaxBlockSize = kBlockSize32kHz;
+  static const size_t kMaxBlockSize = kBlockSize32kHz;
   static const int kInitSampleRateHz = 8000;
 
   NetEqDecodingTest();
@@ -213,7 +213,7 @@
                           int timestamp,
                           WebRtcRTPHeader* rtp_info,
                           uint8_t* payload,
-                          int* payload_len);
+                          size_t* payload_len);
 
   void WrapTest(uint16_t start_seq_no, uint32_t start_timestamp,
                 const std::set<uint16_t>& drop_seq_numbers,
@@ -244,7 +244,7 @@
 const int NetEqDecodingTest::kBlockSize8kHz;
 const int NetEqDecodingTest::kBlockSize16kHz;
 const int NetEqDecodingTest::kBlockSize32kHz;
-const int NetEqDecodingTest::kMaxBlockSize;
+const size_t NetEqDecodingTest::kMaxBlockSize;
 const int NetEqDecodingTest::kInitSampleRateHz;
 
 NetEqDecodingTest::NetEqDecodingTest()
@@ -396,7 +396,7 @@
                                     int timestamp,
                                     WebRtcRTPHeader* rtp_info,
                                     uint8_t* payload,
-                                    int* payload_len) {
+                                    size_t* payload_len) {
   rtp_info->header.sequenceNumber = frame_index;
   rtp_info->header.timestamp = timestamp;
   rtp_info->header.ssrc = 0x1234;  // Just an arbitrary SSRC.
@@ -448,8 +448,8 @@
 TEST_F(NetEqDecodingTestFaxMode, TestFrameWaitingTimeStatistics) {
   // Insert 30 dummy packets at once. Each packet contains 10 ms 16 kHz audio.
   size_t num_frames = 30;
-  const int kSamples = 10 * 16;
-  const int kPayloadBytes = kSamples * 2;
+  const size_t kSamples = 10 * 16;
+  const size_t kPayloadBytes = kSamples * 2;
   for (size_t i = 0; i < num_frames; ++i) {
     uint16_t payload[kSamples] = {0};
     WebRtcRTPHeader rtp_info;
@@ -518,8 +518,8 @@
 TEST_F(NetEqDecodingTest, TestAverageInterArrivalTimeNegative) {
   const int kNumFrames = 3000;  // Needed for convergence.
   int frame_index = 0;
-  const int kSamples = 10 * 16;
-  const int kPayloadBytes = kSamples * 2;
+  const size_t kSamples = 10 * 16;
+  const size_t kPayloadBytes = kSamples * 2;
   while (frame_index < kNumFrames) {
     // Insert one packet each time, except every 10th time where we insert two
     // packets at once. This will create a negative clock-drift of approx. 10%.
@@ -549,8 +549,8 @@
 TEST_F(NetEqDecodingTest, TestAverageInterArrivalTimePositive) {
   const int kNumFrames = 5000;  // Needed for convergence.
   int frame_index = 0;
-  const int kSamples = 10 * 16;
-  const int kPayloadBytes = kSamples * 2;
+  const size_t kSamples = 10 * 16;
+  const size_t kPayloadBytes = kSamples * 2;
   for (int i = 0; i < kNumFrames; ++i) {
     // Insert one packet each time, except every 10th time where we don't insert
     // any packet. This will create a positive clock-drift of approx. 11%.
@@ -585,8 +585,8 @@
   uint16_t seq_no = 0;
   uint32_t timestamp = 0;
   const int kFrameSizeMs = 30;
-  const int kSamples = kFrameSizeMs * 16;
-  const int kPayloadBytes = kSamples * 2;
+  const size_t kSamples = kFrameSizeMs * 16;
+  const size_t kPayloadBytes = kSamples * 2;
   double next_input_time_ms = 0.0;
   double t_ms;
   int out_len;
@@ -625,7 +625,7 @@
     while (next_input_time_ms <= t_ms) {
       // Insert one CNG frame each 100 ms.
       uint8_t payload[kPayloadBytes];
-      int payload_len;
+      size_t payload_len;
       WebRtcRTPHeader rtp_info;
       PopulateCng(seq_no, timestamp, &rtp_info, payload, &payload_len);
       ASSERT_EQ(0, neteq_->InsertPacket(rtp_info, payload, payload_len, 0));
@@ -672,7 +672,7 @@
       }
       // Insert one CNG frame each 100 ms.
       uint8_t payload[kPayloadBytes];
-      int payload_len;
+      size_t payload_len;
       WebRtcRTPHeader rtp_info;
       PopulateCng(seq_no, timestamp, &rtp_info, payload, &payload_len);
       ASSERT_EQ(0, neteq_->InsertPacket(rtp_info, payload, payload_len, 0));
@@ -797,7 +797,7 @@
 }
 
 TEST_F(NetEqDecodingTest, UnknownPayloadType) {
-  const int kPayloadBytes = 100;
+  const size_t kPayloadBytes = 100;
   uint8_t payload[kPayloadBytes] = {0};
   WebRtcRTPHeader rtp_info;
   PopulateRtpInfo(0, 0, &rtp_info);
@@ -808,7 +808,7 @@
 }
 
 TEST_F(NetEqDecodingTest, DISABLED_ON_ANDROID(DecoderError)) {
-  const int kPayloadBytes = 100;
+  const size_t kPayloadBytes = 100;
   uint8_t payload[kPayloadBytes] = {0};
   WebRtcRTPHeader rtp_info;
   PopulateRtpInfo(0, 0, &rtp_info);
@@ -817,7 +817,7 @@
   NetEqOutputType type;
   // Set all of |out_data_| to 1, and verify that it was set to 0 by the call
   // to GetAudio.
-  for (int i = 0; i < kMaxBlockSize; ++i) {
+  for (size_t i = 0; i < kMaxBlockSize; ++i) {
     out_data_[i] = 1;
   }
   int num_channels;
@@ -838,7 +838,7 @@
     SCOPED_TRACE(ss.str());  // Print out the parameter values on failure.
     EXPECT_EQ(0, out_data_[i]);
   }
-  for (int i = kExpectedOutputLength; i < kMaxBlockSize; ++i) {
+  for (size_t i = kExpectedOutputLength; i < kMaxBlockSize; ++i) {
     std::ostringstream ss;
     ss << "i = " << i;
     SCOPED_TRACE(ss.str());  // Print out the parameter values on failure.
@@ -850,7 +850,7 @@
   NetEqOutputType type;
   // Set all of |out_data_| to 1, and verify that it was set to 0 by the call
   // to GetAudio.
-  for (int i = 0; i < kMaxBlockSize; ++i) {
+  for (size_t i = 0; i < kMaxBlockSize; ++i) {
     out_data_[i] = 1;
   }
   int num_channels;
@@ -875,7 +875,7 @@
                              bool should_be_faded) = 0;
 
   void CheckBgn(int sampling_rate_hz) {
-    int expected_samples_per_channel = 0;
+    int16_t expected_samples_per_channel = 0;
     uint8_t payload_type = 0xFF;  // Invalid.
     if (sampling_rate_hz == 8000) {
       expected_samples_per_channel = kBlockSize8kHz;
@@ -899,7 +899,7 @@
     ASSERT_TRUE(input.Init(
         webrtc::test::ResourcePath("audio_coding/testfile32kHz", "pcm"),
         10 * sampling_rate_hz,  // Max 10 seconds loop length.
-        expected_samples_per_channel));
+        static_cast<size_t>(expected_samples_per_channel)));
 
     // Payload of 10 ms of PCM16 32 kHz.
     uint8_t payload[kBlockSize32kHz * sizeof(int16_t)];
@@ -912,7 +912,7 @@
 
     uint32_t receive_timestamp = 0;
     for (int n = 0; n < 10; ++n) {  // Insert few packets and get audio.
-      int enc_len_bytes =
+      int16_t enc_len_bytes =
           WebRtcPcm16b_EncodeW16(input.GetNextBlock(),
                                  expected_samples_per_channel,
                                  reinterpret_cast<int16_t*>(payload));
@@ -921,8 +921,9 @@
       number_channels = 0;
       samples_per_channel = 0;
       ASSERT_EQ(0,
-                neteq_->InsertPacket(
-                    rtp_info, payload, enc_len_bytes, receive_timestamp));
+                neteq_->InsertPacket(rtp_info, payload,
+                                     static_cast<size_t>(enc_len_bytes),
+                                     receive_timestamp));
       ASSERT_EQ(0,
                 neteq_->GetAudio(kBlockSize32kHz,
                                  output,
@@ -1074,7 +1075,7 @@
   EXPECT_EQ(-1, neteq_->InsertSyncPacket(rtp_info, receive_timestamp));
 
   // Payload length of 10 ms PCM16 16 kHz.
-  const int kPayloadBytes = kBlockSize16kHz * sizeof(int16_t);
+  const size_t kPayloadBytes = kBlockSize16kHz * sizeof(int16_t);
   uint8_t payload[kPayloadBytes] = {0};
   ASSERT_EQ(0, neteq_->InsertPacket(
       rtp_info, payload, kPayloadBytes, receive_timestamp));
@@ -1125,11 +1126,11 @@
 TEST_F(NetEqDecodingTest, SyncPacketDecode) {
   WebRtcRTPHeader rtp_info;
   PopulateRtpInfo(0, 0, &rtp_info);
-  const int kPayloadBytes = kBlockSize16kHz * sizeof(int16_t);
+  const size_t kPayloadBytes = kBlockSize16kHz * sizeof(int16_t);
   uint8_t payload[kPayloadBytes];
   int16_t decoded[kBlockSize16kHz];
   int algorithmic_frame_delay = algorithmic_delay_ms_ / 10 + 1;
-  for (int n = 0; n < kPayloadBytes; ++n) {
+  for (size_t n = 0; n < kPayloadBytes; ++n) {
     payload[n] = (rand() & 0xF0) + 1;  // Non-zero random sequence.
   }
   // Insert some packets which decode to noise. We are not interested in
@@ -1204,10 +1205,10 @@
 TEST_F(NetEqDecodingTest, SyncPacketBufferSizeAndOverridenByNetworkPackets) {
   WebRtcRTPHeader rtp_info;
   PopulateRtpInfo(0, 0, &rtp_info);
-  const int kPayloadBytes = kBlockSize16kHz * sizeof(int16_t);
+  const size_t kPayloadBytes = kBlockSize16kHz * sizeof(int16_t);
   uint8_t payload[kPayloadBytes];
   int16_t decoded[kBlockSize16kHz];
-  for (int n = 0; n < kPayloadBytes; ++n) {
+  for (size_t n = 0; n < kPayloadBytes; ++n) {
     payload[n] = (rand() & 0xF0) + 1;  // Non-zero random sequence.
   }
   // Insert some packets which decode to noise. We are not interested in
@@ -1279,7 +1280,7 @@
   const int kBlocksPerFrame = 3;  // Number of 10 ms blocks per frame.
   const int kFrameSizeMs = kBlocksPerFrame * kTimeStepMs;
   const int kSamples = kBlockSize16kHz * kBlocksPerFrame;
-  const int kPayloadBytes = kSamples * sizeof(int16_t);
+  const size_t kPayloadBytes = kSamples * sizeof(int16_t);
   double next_input_time_ms = 0.0;
   int16_t decoded[kBlockSize16kHz];
   int num_channels;
@@ -1380,7 +1381,7 @@
   const int kFrameSizeMs = 10;
   const int kSampleRateKhz = 16;
   const int kSamples = kFrameSizeMs * kSampleRateKhz;
-  const int kPayloadBytes = kSamples * 2;
+  const size_t kPayloadBytes = kSamples * 2;
 
   const int algorithmic_delay_samples = std::max(
       algorithmic_delay_ms_ * kSampleRateKhz, 5 * kSampleRateKhz / 8);
@@ -1409,7 +1410,7 @@
   // Insert same CNG packet twice.
   const int kCngPeriodMs = 100;
   const int kCngPeriodSamples = kCngPeriodMs * kSampleRateKhz;
-  int payload_len;
+  size_t payload_len;
   PopulateCng(seq_no, timestamp, &rtp_info, payload, &payload_len);
   // This is the first time this CNG packet is inserted.
   ASSERT_EQ(0, neteq_->InsertPacket(rtp_info, payload, payload_len, 0));
diff --git a/webrtc/modules/audio_coding/neteq/packet.h b/webrtc/modules/audio_coding/neteq/packet.h
index 89ddda7..723ed8b 100644
--- a/webrtc/modules/audio_coding/neteq/packet.h
+++ b/webrtc/modules/audio_coding/neteq/packet.h
@@ -22,7 +22,7 @@
 struct Packet {
   RTPHeader header;
   uint8_t* payload;  // Datagram excluding RTP header and header extension.
-  int payload_length;
+  size_t payload_length;
   bool primary;  // Primary, i.e., not redundant payload.
   int waiting_time;
   bool sync_packet;
diff --git a/webrtc/modules/audio_coding/neteq/payload_splitter.cc b/webrtc/modules/audio_coding/neteq/payload_splitter.cc
index 1d61ef0..118556b 100644
--- a/webrtc/modules/audio_coding/neteq/payload_splitter.cc
+++ b/webrtc/modules/audio_coding/neteq/payload_splitter.cc
@@ -46,7 +46,7 @@
     //   +-+-+-+-+-+-+-+-+
 
     bool last_block = false;
-    int sum_length = 0;
+    size_t sum_length = 0;
     while (!last_block) {
       Packet* new_packet = new Packet;
       new_packet->header = red_packet->header;
@@ -82,7 +82,7 @@
     // |payload_ptr| now points at the first payload byte.
     PacketList::iterator new_it;
     for (new_it = new_packets.begin(); new_it != new_packets.end(); ++new_it) {
-      int payload_length = (*new_it)->payload_length;
+      size_t payload_length = (*new_it)->payload_length;
       if (payload_ptr + payload_length >
           red_packet->payload + red_packet->payload_length) {
         // The block lengths in the RED headers do not match the overall packet
@@ -291,11 +291,12 @@
         break;
       }
       case kDecoderILBC: {
-        int bytes_per_frame;
+        size_t bytes_per_frame;
         int timestamps_per_frame;
         if (packet->payload_length >= 950) {
           return kTooLargePayload;
-        } else if (packet->payload_length % 38 == 0) {
+        }
+        if (packet->payload_length % 38 == 0) {
           // 20 ms frames.
           bytes_per_frame = 38;
           timestamps_per_frame = 160;
@@ -345,28 +346,28 @@
 }
 
 void PayloadSplitter::SplitBySamples(const Packet* packet,
-                                     int bytes_per_ms,
-                                     int timestamps_per_ms,
+                                     size_t bytes_per_ms,
+                                     uint32_t timestamps_per_ms,
                                      PacketList* new_packets) {
   assert(packet);
   assert(new_packets);
 
-  int split_size_bytes = packet->payload_length;
+  size_t split_size_bytes = packet->payload_length;
 
   // Find a "chunk size" >= 20 ms and < 40 ms.
-  int min_chunk_size = bytes_per_ms * 20;
+  size_t min_chunk_size = bytes_per_ms * 20;
   // Reduce the split size by half as long as |split_size_bytes| is at least
   // twice the minimum chunk size (so that the resulting size is at least as
   // large as the minimum chunk size).
   while (split_size_bytes >= 2 * min_chunk_size) {
     split_size_bytes >>= 1;
   }
-  int timestamps_per_chunk =
-      split_size_bytes * timestamps_per_ms / bytes_per_ms;
+  uint32_t timestamps_per_chunk = static_cast<uint32_t>(
+      split_size_bytes * timestamps_per_ms / bytes_per_ms);
   uint32_t timestamp = packet->header.timestamp;
 
   uint8_t* payload_ptr = packet->payload;
-  int len = packet->payload_length;
+  size_t len = packet->payload_length;
   while (len >= (2 * split_size_bytes)) {
     Packet* new_packet = new Packet;
     new_packet->payload_length = split_size_bytes;
@@ -394,22 +395,21 @@
 }
 
 int PayloadSplitter::SplitByFrames(const Packet* packet,
-                                   int bytes_per_frame,
-                                   int timestamps_per_frame,
+                                   size_t bytes_per_frame,
+                                   uint32_t timestamps_per_frame,
                                    PacketList* new_packets) {
   if (packet->payload_length % bytes_per_frame != 0) {
     return kFrameSplitError;
   }
 
-  int num_frames = packet->payload_length / bytes_per_frame;
-  if (num_frames == 1) {
+  if (packet->payload_length == bytes_per_frame) {
     // Special case. Do not split the payload.
     return kNoSplit;
   }
 
   uint32_t timestamp = packet->header.timestamp;
   uint8_t* payload_ptr = packet->payload;
-  int len = packet->payload_length;
+  size_t len = packet->payload_length;
   while (len > 0) {
     assert(len >= bytes_per_frame);
     Packet* new_packet = new Packet;
diff --git a/webrtc/modules/audio_coding/neteq/payload_splitter.h b/webrtc/modules/audio_coding/neteq/payload_splitter.h
index a3dd77e..6023d4e 100644
--- a/webrtc/modules/audio_coding/neteq/payload_splitter.h
+++ b/webrtc/modules/audio_coding/neteq/payload_splitter.h
@@ -71,16 +71,16 @@
   // Splits the payload in |packet|. The payload is assumed to be from a
   // sample-based codec.
   virtual void SplitBySamples(const Packet* packet,
-                              int bytes_per_ms,
-                              int timestamps_per_ms,
+                              size_t bytes_per_ms,
+                              uint32_t timestamps_per_ms,
                               PacketList* new_packets);
 
   // Splits the payload in |packet|. The payload will be split into chunks of
   // size |bytes_per_frame|, corresponding to a |timestamps_per_frame|
   // RTP timestamps.
   virtual int SplitByFrames(const Packet* packet,
-                            int bytes_per_frame,
-                            int timestamps_per_frame,
+                            size_t bytes_per_frame,
+                            uint32_t timestamps_per_frame,
                             PacketList* new_packets);
 
   DISALLOW_COPY_AND_ASSIGN(PayloadSplitter);
diff --git a/webrtc/modules/audio_coding/neteq/payload_splitter_unittest.cc b/webrtc/modules/audio_coding/neteq/payload_splitter_unittest.cc
index cf29581..d397a07 100644
--- a/webrtc/modules/audio_coding/neteq/payload_splitter_unittest.cc
+++ b/webrtc/modules/audio_coding/neteq/payload_splitter_unittest.cc
@@ -27,8 +27,8 @@
 namespace webrtc {
 
 static const int kRedPayloadType = 100;
-static const int kPayloadLength = 10;
-static const int kRedHeaderLength = 4;  // 4 bytes RED header.
+static const size_t kPayloadLength = 10;
+static const size_t kRedHeaderLength = 4;  // 4 bytes RED header.
 static const uint16_t kSequenceNumber = 0;
 static const uint32_t kBaseTimestamp = 0x12345678;
 
@@ -50,7 +50,7 @@
 // by the values in array |payload_types| (which must be of length
 // |num_payloads|). Each redundant payload is |timestamp_offset| samples
 // "behind" the the previous payload.
-Packet* CreateRedPayload(int num_payloads,
+Packet* CreateRedPayload(size_t num_payloads,
                          uint8_t* payload_types,
                          int timestamp_offset) {
   Packet* packet = new Packet;
@@ -61,7 +61,7 @@
       (num_payloads - 1) * (kPayloadLength + kRedHeaderLength);
   uint8_t* payload = new uint8_t[packet->payload_length];
   uint8_t* payload_ptr = payload;
-  for (int i = 0; i < num_payloads; ++i) {
+  for (size_t i = 0; i < num_payloads; ++i) {
     // Write the RED headers.
     if (i == num_payloads - 1) {
       // Special case for last payload.
@@ -82,9 +82,9 @@
     *payload_ptr = kPayloadLength & 0xFF;
     ++payload_ptr;
   }
-  for (int i = 0; i < num_payloads; ++i) {
+  for (size_t i = 0; i < num_payloads; ++i) {
     // Write |i| to all bytes in each payload.
-    memset(payload_ptr, i, kPayloadLength);
+    memset(payload_ptr, static_cast<int>(i), kPayloadLength);
     payload_ptr += kPayloadLength;
   }
   packet->payload = payload;
@@ -104,7 +104,7 @@
 // :                                                               |
 // |                                                               |
 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-Packet* CreateOpusFecPacket(uint8_t payload_type, int payload_length,
+Packet* CreateOpusFecPacket(uint8_t payload_type, size_t payload_length,
                             uint8_t payload_value) {
   Packet* packet = new Packet;
   packet->header.payloadType = payload_type;
@@ -120,7 +120,7 @@
 }
 
 // Create a packet with all payload bytes set to |payload_value|.
-Packet* CreatePacket(uint8_t payload_type, int payload_length,
+Packet* CreatePacket(uint8_t payload_type, size_t payload_length,
                      uint8_t payload_value) {
   Packet* packet = new Packet;
   packet->header.payloadType = payload_type;
@@ -135,7 +135,7 @@
 
 // Checks that |packet| has the attributes given in the remaining parameters.
 void VerifyPacket(const Packet* packet,
-                  int payload_length,
+                  size_t payload_length,
                   uint8_t payload_type,
                   uint16_t sequence_number,
                   uint32_t timestamp,
@@ -147,7 +147,7 @@
   EXPECT_EQ(timestamp, packet->header.timestamp);
   EXPECT_EQ(primary, packet->primary);
   ASSERT_FALSE(packet->payload == NULL);
-  for (int i = 0; i < packet->payload_length; ++i) {
+  for (size_t i = 0; i < packet->payload_length; ++i) {
     EXPECT_EQ(payload_value, packet->payload[i]);
   }
 }
@@ -295,7 +295,7 @@
 // found in the list (which is PCMu).
 TEST(RedPayloadSplitter, CheckRedPayloads) {
   PacketList packet_list;
-  for (int i = 0; i <= 3; ++i) {
+  for (uint8_t i = 0; i <= 3; ++i) {
     // Create packet with payload type |i|, payload length 10 bytes, all 0.
     Packet* packet = CreatePacket(i, 10, 0);
     packet_list.push_back(packet);
@@ -357,7 +357,7 @@
   // Set up packets with different RTP payload types. The actual values do not
   // matter, since we are mocking the decoder database anyway.
   PacketList packet_list;
-  for (int i = 0; i < 6; ++i) {
+  for (uint8_t i = 0; i < 6; ++i) {
     // Let the payload type be |i|, and the payload value 10 * |i|.
     packet_list.push_back(CreatePacket(i, kPayloadLength, 10 * i));
   }
@@ -415,7 +415,7 @@
 TEST(AudioPayloadSplitter, UnknownPayloadType) {
   PacketList packet_list;
   static const uint8_t kPayloadType = 17;  // Just a random number.
-  int kPayloadLengthBytes = 4711;  // Random number.
+  size_t kPayloadLengthBytes = 4711;  // Random number.
   packet_list.push_back(CreatePacket(kPayloadType, kPayloadLengthBytes, 0));
 
   MockDecoderDatabase decoder_database;
@@ -502,7 +502,7 @@
         break;
     }
   }
-  int bytes_per_ms_;
+  size_t bytes_per_ms_;
   int samples_per_ms_;
   NetEqDecoder decoder_type_;
 };
@@ -514,7 +514,7 @@
   for (int payload_size_ms = 10; payload_size_ms <= 60; payload_size_ms += 10) {
     // The payload values are set to be the same as the payload_size, so that
     // one can distinguish from which packet the split payloads come from.
-    int payload_size_bytes = payload_size_ms * bytes_per_ms_;
+    size_t payload_size_bytes = payload_size_ms * bytes_per_ms_;
     packet_list.push_back(CreatePacket(kPayloadType, payload_size_bytes,
                                        payload_size_ms));
   }
@@ -548,7 +548,7 @@
   PacketList::iterator it = packet_list.begin();
   int i = 0;
   while (it != packet_list.end()) {
-    int length_bytes = expected_size_ms[i] * bytes_per_ms_;
+    size_t length_bytes = expected_size_ms[i] * bytes_per_ms_;
     uint32_t expected_timestamp = kBaseTimestamp +
         expected_timestamp_offset_ms[i] * samples_per_ms_;
     VerifyPacket((*it), length_bytes, kPayloadType, kSequenceNumber,
@@ -583,7 +583,7 @@
   }
   size_t num_frames_;
   int frame_length_ms_;
-  int frame_length_bytes_;
+  size_t frame_length_bytes_;
 };
 
 // Test splitting sample-based payloads.
@@ -591,10 +591,10 @@
   PacketList packet_list;
   static const uint8_t kPayloadType = 17;  // Just a random number.
   const int frame_length_samples = frame_length_ms_ * 8;
-  int payload_length_bytes = frame_length_bytes_ * num_frames_;
+  size_t payload_length_bytes = frame_length_bytes_ * num_frames_;
   Packet* packet = CreatePacket(kPayloadType, payload_length_bytes, 0);
   // Fill payload with increasing integers {0, 1, 2, ...}.
-  for (int i = 0; i < packet->payload_length; ++i) {
+  for (size_t i = 0; i < packet->payload_length; ++i) {
     packet->payload[i] = static_cast<uint8_t>(i);
   }
   packet_list.push_back(packet);
@@ -624,7 +624,7 @@
     EXPECT_EQ(kSequenceNumber, packet->header.sequenceNumber);
     EXPECT_EQ(true, packet->primary);
     ASSERT_FALSE(packet->payload == NULL);
-    for (int i = 0; i < packet->payload_length; ++i) {
+    for (size_t i = 0; i < packet->payload_length; ++i) {
       EXPECT_EQ(payload_value, packet->payload[i]);
       ++payload_value;
     }
@@ -661,7 +661,7 @@
 TEST(IlbcPayloadSplitter, TooLargePayload) {
   PacketList packet_list;
   static const uint8_t kPayloadType = 17;  // Just a random number.
-  int kPayloadLengthBytes = 950;
+  size_t kPayloadLengthBytes = 950;
   Packet* packet = CreatePacket(kPayloadType, kPayloadLengthBytes, 0);
   packet_list.push_back(packet);
 
@@ -692,7 +692,7 @@
 TEST(IlbcPayloadSplitter, UnevenPayload) {
   PacketList packet_list;
   static const uint8_t kPayloadType = 17;  // Just a random number.
-  int kPayloadLengthBytes = 39;  // Not an even number of frames.
+  size_t kPayloadLengthBytes = 39;  // Not an even number of frames.
   Packet* packet = CreatePacket(kPayloadType, kPayloadLengthBytes, 0);
   packet_list.push_back(packet);
 
@@ -744,7 +744,7 @@
   packet = packet_list.front();
   EXPECT_EQ(0, packet->header.payloadType);
   EXPECT_EQ(kBaseTimestamp - 20 * 48, packet->header.timestamp);
-  EXPECT_EQ(10, packet->payload_length);
+  EXPECT_EQ(10U, packet->payload_length);
   EXPECT_FALSE(packet->primary);
   delete [] packet->payload;
   delete packet;
@@ -754,7 +754,7 @@
   packet = packet_list.front();
   EXPECT_EQ(0, packet->header.payloadType);
   EXPECT_EQ(kBaseTimestamp, packet->header.timestamp);
-  EXPECT_EQ(10, packet->payload_length);
+  EXPECT_EQ(10U, packet->payload_length);
   EXPECT_TRUE(packet->primary);
   delete [] packet->payload;
   delete packet;
diff --git a/webrtc/modules/audio_coding/neteq/test/NETEQTEST_RTPpacket.cc b/webrtc/modules/audio_coding/neteq/test/NETEQTEST_RTPpacket.cc
index 7f94851..d4c2191 100644
--- a/webrtc/modules/audio_coding/neteq/test/NETEQTEST_RTPpacket.cc
+++ b/webrtc/modules/audio_coding/neteq/test/NETEQTEST_RTPpacket.cc
@@ -329,7 +329,7 @@
     }
 }
 
-int16_t NETEQTEST_RTPpacket::payloadLen()
+size_t NETEQTEST_RTPpacket::payloadLen()
 {
     parseHeader();
     return _payloadLen;
@@ -752,7 +752,7 @@
                                             int stride)
 {
     if(!_payloadPtr || !slaveRtp || !slaveRtp->_payloadPtr
-        || _payloadLen <= 0 || slaveRtp->_memSize < _memSize)
+        || _payloadLen == 0 || slaveRtp->_memSize < _memSize)
     {
         return;
     }
@@ -761,7 +761,7 @@
     uint8_t *writeDataPtr = _payloadPtr;
     uint8_t *slaveData = slaveRtp->_payloadPtr;
 
-    while (readDataPtr - _payloadPtr < _payloadLen)
+    while (readDataPtr - _payloadPtr < static_cast<ptrdiff_t>(_payloadLen))
     {
         // master data
         for (int ix = 0; ix < stride; ix++) {
@@ -786,7 +786,7 @@
 void NETEQTEST_RTPpacket::splitStereoFrame(NETEQTEST_RTPpacket* slaveRtp)
 {
     if(!_payloadPtr || !slaveRtp || !slaveRtp->_payloadPtr
-        || _payloadLen <= 0 || slaveRtp->_memSize < _memSize)
+        || _payloadLen == 0 || slaveRtp->_memSize < _memSize)
     {
         return;
     }
@@ -799,7 +799,7 @@
 void NETEQTEST_RTPpacket::splitStereoDouble(NETEQTEST_RTPpacket* slaveRtp)
 {
     if(!_payloadPtr || !slaveRtp || !slaveRtp->_payloadPtr
-        || _payloadLen <= 0 || slaveRtp->_memSize < _memSize)
+        || _payloadLen == 0 || slaveRtp->_memSize < _memSize)
     {
         return;
     }
@@ -868,7 +868,7 @@
 {
     parseHeader();
 
-    for (int i = 0; i < _payloadLen; ++i)
+    for (size_t i = 0; i < _payloadLen; ++i)
     {
         _payloadPtr[i] = static_cast<uint8_t>(rand());
     }
diff --git a/webrtc/modules/audio_coding/neteq/test/NETEQTEST_RTPpacket.h b/webrtc/modules/audio_coding/neteq/test/NETEQTEST_RTPpacket.h
index 8a31274..86bf3b0 100644
--- a/webrtc/modules/audio_coding/neteq/test/NETEQTEST_RTPpacket.h
+++ b/webrtc/modules/audio_coding/neteq/test/NETEQTEST_RTPpacket.h
@@ -42,7 +42,7 @@
     const webrtc::WebRtcRTPHeader* RTPinfo() const;
     uint8_t * datagram() const;
     uint8_t * payload() const;
-    int16_t payloadLen();
+    size_t payloadLen();
     int16_t dataLen() const;
     bool isParsed() const;
     bool isLost() const;
@@ -73,7 +73,7 @@
     uint8_t *       _payloadPtr;
     int                 _memSize;
     int16_t         _datagramLen;
-    int16_t         _payloadLen;
+    size_t          _payloadLen;
     webrtc::WebRtcRTPHeader _rtpInfo;
     bool                _rtpParsed;
     uint32_t        _receiveTime;
diff --git a/webrtc/modules/audio_coding/neteq/tools/neteq_performance_test.cc b/webrtc/modules/audio_coding/neteq/tools/neteq_performance_test.cc
index 433546f..ebe0784 100644
--- a/webrtc/modules/audio_coding/neteq/tools/neteq_performance_test.cc
+++ b/webrtc/modules/audio_coding/neteq/tools/neteq_performance_test.cc
@@ -64,9 +64,9 @@
   const int16_t* input_samples = audio_loop.GetNextBlock();
   if (!input_samples) exit(1);
   uint8_t input_payload[kInputBlockSizeSamples * sizeof(int16_t)];
-  int payload_len = WebRtcPcm16b_Encode(const_cast<int16_t*>(input_samples),
-                                        kInputBlockSizeSamples,
-                                        input_payload);
+  size_t payload_len = WebRtcPcm16b_Encode(const_cast<int16_t*>(input_samples),
+                                           kInputBlockSizeSamples,
+                                           input_payload);
   assert(payload_len == kInputBlockSizeSamples * sizeof(int16_t));
 
   // Main loop.
diff --git a/webrtc/modules/audio_coding/neteq/tools/neteq_quality_test.h b/webrtc/modules/audio_coding/neteq/tools/neteq_quality_test.h
index e0a43b6..00a2499 100644
--- a/webrtc/modules/audio_coding/neteq/tools/neteq_quality_test.h
+++ b/webrtc/modules/audio_coding/neteq/tools/neteq_quality_test.h
@@ -118,7 +118,7 @@
   // Expected output number of samples per channel in a frame.
   const int out_size_samples_;
 
-  int payload_size_bytes_;
+  size_t payload_size_bytes_;
   int max_payload_bytes_;
 
   scoped_ptr<InputAudioFile> in_file_;
@@ -134,7 +134,7 @@
   scoped_ptr<int16_t[]> out_data_;
   WebRtcRTPHeader rtp_header_;
 
-  long total_payload_size_bytes_;
+  size_t total_payload_size_bytes_;
 };
 
 }  // namespace test
diff --git a/webrtc/modules/audio_coding/neteq/tools/neteq_rtpplay.cc b/webrtc/modules/audio_coding/neteq/tools/neteq_rtpplay.cc
index ef2c0b6..4247807 100644
--- a/webrtc/modules/audio_coding/neteq/tools/neteq_rtpplay.cc
+++ b/webrtc/modules/audio_coding/neteq/tools/neteq_rtpplay.cc
@@ -286,7 +286,7 @@
       int error =
           neteq->InsertPacket(rtp_header,
                               payload_ptr,
-                              static_cast<int>(payload_len),
+                              payload_len,
                               packet->time_ms() * sample_rate_hz / 1000);
       if (error != NetEq::kOK) {
         if (neteq->LastError() == NetEq::kUnknownRtpPayloadType) {