Replace typedef with using

src/engine/chromaprinter.cpp

@@ -40,7 +40,7 @@
 #include "core/signalchecker.h"
 
 #ifndef u_int32_t
-typedef unsigned int u_int32_t;
+using u_int32_t = unsigned int;
 #endif
 
 static const int kDecodeRate = 11025;

src/engine/engine_fwd.h

@@ -37,6 +37,6 @@ Q_DECLARE_FLAGS(TrackChangeFlags, TrackChangeType)
 
 }  // namespace Engine
 
-typedef Engine::Base EngineBase;
+using EngineBase = Engine::Base;
 
 #endif  // ENGINE_FWD_H

src/engine/enginebase.h

@@ -47,7 +47,7 @@ namespace Engine {
 
 struct SimpleMetaBundle;
 
-typedef std::vector<int16_t> Scope;
+using Scope = std::vector<int16_t>;
 
 class Base : public QObject {
   Q_OBJECT
@@ -63,7 +63,7 @@ class Base : public QObject {
     QString description;
     QString iconname;
   };
-  typedef QList<OutputDetails> OutputDetailsList;
+  using OutputDetailsList = QList<OutputDetails>;
 
   virtual bool Init() = 0;
   virtual State state() const = 0;
@@ -160,7 +160,7 @@ class Base : public QObject {
     QString description;
     QString iconname;
   };
-  typedef QList<PluginDetails> PluginDetailsList;
+  using PluginDetailsList = QList<PluginDetails>;
 
   EngineType type_;
   bool volume_control_;

src/engine/gstengine.cpp

@@ -835,7 +835,7 @@ std::shared_ptr<GstEnginePipeline> GstEngine::CreatePipeline(const QByteArray &g
 
 void GstEngine::UpdateScope(const int chunk_length) {
 
-  typedef Engine::Scope::value_type sample_type;
+  using sample_type = Engine::Scope::value_type;
 
   // Prevent dbz or invalid chunk size
   if (!GST_CLOCK_TIME_IS_VALID(GST_BUFFER_DURATION(latest_buffer_))) return;