Replace NULL with nullptr in all C++ files.

webrtc/voice_engine/voe_external_media_impl.cc

 /*
  *  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.
  */
 
 #include "webrtc/voice_engine/voe_external_media_impl.h"
 
 #include "webrtc/audio/utility/audio_frame_operations.h"
 #include "webrtc/system_wrappers/include/trace.h"
 #include "webrtc/voice_engine/channel.h"
 #include "webrtc/voice_engine/include/voe_errors.h"
 #include "webrtc/voice_engine/output_mixer.h"
 #include "webrtc/voice_engine/transmit_mixer.h"
 #include "webrtc/voice_engine/voice_engine_impl.h"
 
 namespace webrtc {
 
 VoEExternalMedia* VoEExternalMedia::GetInterface(VoiceEngine* voiceEngine) {
-  if (NULL == voiceEngine) {
-    return NULL;
+  if (nullptr == voiceEngine) {
+    return nullptr;
   }
   VoiceEngineImpl* s = static_cast<VoiceEngineImpl*>(voiceEngine);
   s->AddRef();
   return s;
 }
 
 VoEExternalMediaImpl::VoEExternalMediaImpl(voe::SharedData* shared)
     :
 #ifdef WEBRTC_VOE_EXTERNAL_REC_AND_PLAYOUT
       playout_delay_ms_(0),
@@ skipping 18 matching lines @@
                channel, type, &processObject);
   if (!shared_->statistics().Initialized()) {
     shared_->SetLastError(VE_NOT_INITED, kTraceError);
     return -1;
   }
   switch (type) {
     case kPlaybackPerChannel:
     case kRecordingPerChannel: {
       voe::ChannelOwner ch = shared_->channel_manager().GetChannel(channel);
       voe::Channel* channelPtr = ch.channel();
-      if (channelPtr == NULL) {
+      if (channelPtr == nullptr) {
         shared_->SetLastError(
             VE_CHANNEL_NOT_VALID, kTraceError,
             "RegisterExternalMediaProcessing() failed to locate "
             "channel");
         return -1;
       }
       return channelPtr->RegisterExternalMediaProcessing(type, processObject);
     }
     case kPlaybackAllChannelsMixed: {
       return shared_->output_mixer()->RegisterExternalMediaProcessing(
@@ skipping 15 matching lines @@
                "DeRegisterExternalMediaProcessing(channel=%d)", channel);
   if (!shared_->statistics().Initialized()) {
     shared_->SetLastError(VE_NOT_INITED, kTraceError);
     return -1;
   }
   switch (type) {
     case kPlaybackPerChannel:
     case kRecordingPerChannel: {
       voe::ChannelOwner ch = shared_->channel_manager().GetChannel(channel);
       voe::Channel* channelPtr = ch.channel();
-      if (channelPtr == NULL) {
+      if (channelPtr == nullptr) {
         shared_->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                               "RegisterExternalMediaProcessing() "
                               "failed to locate channel");
         return -1;
       }
       return channelPtr->DeRegisterExternalMediaProcessing(type);
     }
     case kPlaybackAllChannelsMixed: {
       return shared_->output_mixer()->DeRegisterExternalMediaProcessing();
     }
     case kRecordingAllChannelsMixed:
     case kRecordingPreprocessing: {
       return shared_->transmit_mixer()->DeRegisterExternalMediaProcessing(type);
     }
   }
   return -1;
 }
 
 int VoEExternalMediaImpl::GetAudioFrame(int channel, int desired_sample_rate_hz,
                                         AudioFrame* frame) {
   if (!shared_->statistics().Initialized()) {
     shared_->SetLastError(VE_NOT_INITED, kTraceError);
     return -1;
   }
   voe::ChannelOwner ch = shared_->channel_manager().GetChannel(channel);
   voe::Channel* channelPtr = ch.channel();
-  if (channelPtr == NULL) {
+  if (channelPtr == nullptr) {
     shared_->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                           "GetAudioFrame() failed to locate channel");
     return -1;
   }
   if (!channelPtr->ExternalMixing()) {
     shared_->SetLastError(VE_INVALID_OPERATION, kTraceError,
                           "GetAudioFrame() was called on channel that is not"
                           " externally mixed.");
     return -1;
   }
@@ skipping 20 matching lines @@
 int VoEExternalMediaImpl::SetExternalMixing(int channel, bool enable) {
   WEBRTC_TRACE(kTraceApiCall, kTraceVoice,
                VoEId(shared_->instance_id(), channel),
                "SetExternalMixing(channel=%d, enable=%d)", channel, enable);
   if (!shared_->statistics().Initialized()) {
     shared_->SetLastError(VE_NOT_INITED, kTraceError);
     return -1;
   }
   voe::ChannelOwner ch = shared_->channel_manager().GetChannel(channel);
   voe::Channel* channelPtr = ch.channel();
-  if (channelPtr == NULL) {
+  if (channelPtr == nullptr) {
     shared_->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                           "SetExternalMixing() failed to locate channel");
     return -1;
   }
   return channelPtr->SetExternalMixing(enable);
 }
 
 }  // namespace webrtc