5 files changed, 6 insertions, 6 deletions
diff --git a/src/dabInput.h b/src/dabInput.h
index f1b4348..d5444cd 100644
--- a/src/dabInput.h
+++ b/src/dabInput.h
@@ -51,7 +51,7 @@ struct dabInputOperations {
 /* New input object base */
 class DabInputBase {
     public:
-        virtual int open(const std::string name) = 0;
+        virtual int open(const std::string& name) = 0;
         virtual int readFrame(void* buffer, int size) = 0;
         virtual int setBitrate(int bitrate) = 0;
         virtual int close() = 0;
@@ -71,7 +71,7 @@ class DabInputCompatible : public DabInputBase {
         virtual ~DabInputCompatible()
         { m_ops.clean(&args); }
 
-        virtual int open(const std::string name)
+        virtual int open(const std::string& name)
         { return m_ops.open(args, name.c_str()); }
 
         virtual int setbuf(int size)
diff --git a/src/dabInputPrbs.cpp b/src/dabInputPrbs.cpp
index f9a62b5..2678668 100644
--- a/src/dabInputPrbs.cpp
+++ b/src/dabInputPrbs.cpp
@@ -42,7 +42,7 @@ using namespace std;
 // Preferred polynomial is G(x) = x^20 + x^17 + 1
 const uint32_t PRBS_DEFAULT_POLY = (1 << 19) | (1 << 16) | 1;
 
-int DabInputPrbs::open(const string name)
+int DabInputPrbs::open(const string& name)
 {
     if (name.empty()) {
         m_prbs.setup(PRBS_DEFAULT_POLY);
diff --git a/src/dabInputPrbs.h b/src/dabInputPrbs.h
index 9cde7e2..95c5e25 100644
--- a/src/dabInputPrbs.h
+++ b/src/dabInputPrbs.h
@@ -39,7 +39,7 @@
 
 class DabInputPrbs : public DabInputBase {
     public:
-        virtual int open(const std::string name);
+        virtual int open(const std::string& name);
         virtual int readFrame(void* buffer, int size);
         virtual int setBitrate(int bitrate);
         virtual int close();
diff --git a/src/dabInputZmq.cpp b/src/dabInputZmq.cpp
index 790a961..93f1ea3 100644
--- a/src/dabInputZmq.cpp
+++ b/src/dabInputZmq.cpp
@@ -223,7 +223,7 @@ void DabInputZmqBase::rebind()
     }
 }
 
-int DabInputZmqBase::open(const std::string inputUri)
+int DabInputZmqBase::open(const std::string& inputUri)
 {
     m_inputUri = inputUri;
 
diff --git a/src/dabInputZmq.h b/src/dabInputZmq.h
index fdd0f1b..351fb07 100644
--- a/src/dabInputZmq.h
+++ b/src/dabInputZmq.h
@@ -191,7 +191,7 @@ class DabInputZmqBase : public DabInputBase, public RemoteControllable {
                 INVALIDATE_KEY(m_curve_encoder_key);
             }
 
-        virtual int open(const std::string inputUri);
+        virtual int open(const std::string& inputUri);
         virtual int readFrame(void* buffer, int size);
         virtual int setBitrate(int bitrate);
         virtual int close();