Replace NULL with nullptr in all C++ files.

webrtc/modules/audio_coding/test/utility.cc

 /*
  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 93 matching lines @@
 int16_t ChooseCodec(CodecInst& codecInst) {
 
   PrintCodecs();
   //AudioCodingModule* tmpACM = AudioCodingModule::Create(0);
   uint8_t noCodec = AudioCodingModule::NumberOfCodecs();
   int8_t codecID;
   bool outOfRange = false;
   char myStr[15] = "";
   do {
     printf("\nChoose a codec [0]: ");
-    EXPECT_TRUE(fgets(myStr, 10, stdin) != NULL);
+    EXPECT_TRUE(fgets(myStr, 10, stdin) != nullptr);
     codecID = atoi(myStr);
     if ((codecID < 0) || (codecID >= noCodec)) {
       printf("\nOut of range.\n");
       outOfRange = true;
     }
   } while (outOfRange);
 
   CHECK_ERROR(AudioCodingModule::Codec((uint8_t )codecID, &codecInst));
   return 0;
 }
 
 void PrintCodecs() {
   uint8_t noCodec = AudioCodingModule::NumberOfCodecs();
 
   CodecInst codecInst;
   printf("No  Name                [Hz]    [bps]\n");
   for (uint8_t codecCntr = 0; codecCntr < noCodec; codecCntr++) {
     AudioCodingModule::Codec(codecCntr, &codecInst);
     printf("%2d- %-18s %5d   %6d\n", codecCntr, codecInst.plname,
            codecInst.plfreq, codecInst.rate);
   }
 
 }
 
 CircularBuffer::CircularBuffer(uint32_t len)
-    : _buff(NULL),
+    : _buff(nullptr),
       _idx(0),
       _buffIsFull(false),
       _calcAvg(false),
       _calcVar(false),
       _sum(0),
       _sumSqr(0) {
   _buff = new double[len];
-  if (_buff == NULL) {
+  if (_buff == nullptr) {
     _buffLen = 0;
   } else {
     for (uint32_t n = 0; n < len; n++) {
       _buff[n] = 0;
     }
     _buffLen = len;
   }
 }
 
 CircularBuffer::~CircularBuffer() {
-  if (_buff != NULL) {
+  if (_buff != nullptr) {
     delete[] _buff;
-    _buff = NULL;
+    _buff = nullptr;
   }
 }
 
 void CircularBuffer::Update(const double newVal) {
   assert(_buffLen > 0);
 
   // store the value that is going to be overwritten
   double oldVal = _buff[_idx];
   // record the new value
   _buff[_idx] = newVal;
@@ skipping 121 matching lines @@
   printf("kVideoFrameKey...... %d\n", _numFrameTypes[kVideoFrameKey]);
   printf("kVideoFrameDelta.... %d\n", _numFrameTypes[kVideoFrameDelta]);
 }
 
 int32_t VADCallback::InFrameType(FrameType frame_type) {
   _numFrameTypes[frame_type]++;
   return 0;
 }
 
 }  // namespace webrtc