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RtWvIn.h
1 #ifndef STK_RTWVIN_H
2 #define STK_RTWVIN_H
3 
4 #include "WvIn.h"
5 #include "RtAudio.h"
6 #include "Mutex.h"
7 
8 namespace stk {
9 
10 /***************************************************/
29 /***************************************************/
30 
31 class RtWvIn : public WvIn
32 {
33 public:
35 
42  RtWvIn( unsigned int nChannels = 1, StkFloat sampleRate = Stk::sampleRate(),
43  int device = 0, int bufferFrames = RT_BUFFER_SIZE, int nBuffers = 20 );
44 
46  ~RtWvIn();
47 
49 
53  void start( void );
54 
56 
60  void stop( void );
61 
63 
72  StkFloat lastOut( unsigned int channel = 0 );
73 
75 
84  StkFloat tick( unsigned int channel = 0 );
85 
87 
94  StkFrames& tick( StkFrames& frames );
95 
96  // This function is not intended for general use but must be
97  // public for access from the audio callback function.
98  void fillBuffer( void *buffer, unsigned int nFrames );
99 
100 protected:
101 
102  RtAudio adc_;
103  Mutex mutex_;
104  bool stopped_;
105  unsigned int readIndex_;
106  unsigned int writeIndex_;
107  unsigned int framesFilled_;
108 
109 };
110 
111 inline StkFloat RtWvIn :: lastOut( unsigned int channel )
112 {
113 #if defined(_STK_DEBUG_)
114  if ( channel >= data_.channels() ) {
115  oStream_ << "RtWvIn::lastOut(): channel argument and audio stream are incompatible!";
116  handleError( StkError::FUNCTION_ARGUMENT );
117  }
118 #endif
119 
120  return lastFrame_[channel];
121 }
122 
123 } // stk namespace
124 
125 #endif
static void handleError(const char *message, StkError::Type type)
Static function for error reporting and handling using c-strings.
void start(void)
Start the audio input stream.
The STK namespace.
Definition: ADSR.h:6
STK audio input abstract base class.
Definition: WvIn.h:19
~RtWvIn()
Class destructor.
StkFloat tick(unsigned int channel=0)
Compute a sample frame and return the specified channel value.
StkFloat lastOut(unsigned int channel=0)
Return the specified channel value of the last computed frame.
Definition: RtWvIn.h:111
unsigned int channels(void) const
Return the number of channels represented by the data.
Definition: Stk.h:377
static StkFloat sampleRate(void)
Static method that returns the current STK sample rate.
Definition: Stk.h:145
RtWvIn(unsigned int nChannels=1, StkFloat sampleRate=Stk::sampleRate(), int device=0, int bufferFrames=RT_BUFFER_SIZE, int nBuffers=20)
Default constructor.
STK mutex class.
Definition: Mutex.h:36
An STK class to handle vectorized audio data.
Definition: Stk.h:272
void stop(void)
Stop the audio input stream.
STK realtime audio (blocking) input class.
Definition: RtWvIn.h:31
Realtime audio i/o C++ classes.
Definition: RtAudio.h:261

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