int instead of long

inc/ALSACapture.h

@@ -50,8 +50,8 @@ class ALSACapture  : public DeviceInterface
 		virtual int            getFd();
 		virtual unsigned long  getBufferSize()      { return m_bufferSize;          }	
 		
-		virtual unsigned long  getSampleRate()      { return m_params.m_sampleRate; }
-		virtual unsigned long  getChannels  ()      { return m_params.m_channels;   }
+		virtual int            getSampleRate()      { return m_params.m_sampleRate; }
+		virtual int            getChannels  ()      { return m_params.m_channels;   }
 		virtual int            getAudioFormat ()    { return m_fmt;                 }
 		virtual std::list<int> getAudioFormatList() { return m_fmtList;             }
 

inc/DeviceInterface.h

@@ -24,8 +24,8 @@ class DeviceInterface
 		virtual int            getHeight()                   { return -1; }
 		virtual int            getVideoFormat()              { return -1; }
 		virtual std::list<int> getVideoFormatList()          { return std::list<int>(); }
-		virtual unsigned long  getSampleRate()               { return -1; }
-		virtual unsigned long  getChannels()                 { return -1; }
+		virtual int            getSampleRate()               { return -1; }
+		virtual int            getChannels()                 { return -1; }
 		virtual int            getAudioFormat()              { return -1; }				
 		virtual std::list<int> getAudioFormatList()          { return std::list<int>(); }
 		virtual ~DeviceInterface()                           {};