//
// Programmer:    Craig Stuart Sapp <craig@ccrma.stanford.edu>
// Creation Date: Wed Jun 27 12:23:25 PDT 2001
// Last Modified: Wed Jun 27 12:23:27 PDT 2001
// Filename:      ...sig/maint/code/audio/AudioIO/oss/DspIO_oss.h
// Web Address:   http://sig.sapp.org/include/sig/DspIO_oss.h
// Syntax:        C++ 
//
// Description:   Basic Audio input/output functionality for the 
//                Linux OSS audio device /dev/dsp.  This class
//                is inherited by the classes AudioIn_oss and
//                AudioOut_oss.  Only one device is allowed
//                at this time.
//

#ifdef LINUX

#ifndef _DSPIO_OSS_H_INCLUDED
#define _DSPIO_OSS_H_INCLUDED

#ifndef OLDCPP
   #include <iostream>
   using namespace std;
#else
   #include <iostream.h>
#endif

typedef unsigned char uchar;


class DspIO_oss {
   public:
                    DspIO_oss            (void);
                   ~DspIO_oss            ();

      void          close                (void);
      int           open                 (void);
      int           open16LSB            (int channels = 1, 
                                            double samplingrate = 44100.0);
      int           is_open              (void);
      void          read                 (uchar* buf, int count);
      int           getFd                (void);   
      
   protected:
      static int openQ;             // 1 = open, 0 = closed
      static const char* dsp;       // name of dsp device
      static int dsp_fd;            // dsp file descriptor
      static int numchans;          // number of channels
      static int srate;             // sampling rate
      static int format;            // sample format
      static int class_count;       // number of active class objects

};



#endif  /* _DSPIO_OSS_H_INCLUDED */
#endif  /* LINUX */



// md5sum: 75c193a9291677da2acf3556d54acaf1 DspIO_oss.h [20050403]