linux/iio/JackIIODriver.h

   1 /*
   2 Copyright (C) 2013 Matt Flax <flatmax@flatmax.org>
   3
   4 This program is free software; you can redistribute it and/or modify
   5 it under the terms of the GNU General Public License as published by
   6 the Free Software Foundation; either version 2 of the License, or
   7 (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program; if not, write to the Free Software
  16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #ifndef JACKIIODRIVER_H
  21 #define JACKIIODRIVER_H
  22
  23 #include "JackAudioDriver.h"
  24 #include "JackThreadedDriver.h"
  25
  26 #include <IIO/IIOMMap.H>
  27
  28 namespace Jack {
  29
  30 /** The Linux Industrial IO (IIO) subsystem driver for Jack.
  31 Currently this driver only supports capture.
  32 */
  33 class JackIIODriver : public JackAudioDriver {
  34
  35 public:
  36     IIOMMap iio; ///< The actual IIO devices
  37     Eigen::Array<unsigned short int, Eigen::Dynamic, Eigen::Dynamic> data; ///< When we grab a mmapped buffer, store it here.
  38
  39     /** Constructor
  40     */
  41     JackIIODriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table) : JackAudioDriver(name, alias, engine, table) {
  42     }
  43
  44     /** Destructor
  45     */
  46     virtual ~JackIIODriver() {
  47     }
  48
  49     virtual int Open(jack_nframes_t buffer_size,
  50                      jack_nframes_t samplerate,
  51                      bool capturing,
  52                      bool playing,
  53                      int inchannels,
  54                      int outchannels,
  55                      bool monitor,
  56                      const char* capture_driver_name,
  57                      const char* playback_driver_name,
  58                      jack_nframes_t capture_latency,
  59                      jack_nframes_t playback_latency);
  60
  61     virtual int Close();
  62
  63     virtual int Read(); ///< Read from the IIO sysetm and load the jack buffers
  64
  65     virtual int Write(); ///< Not implemented.
  66
  67     virtual int SetBufferSize(jack_nframes_t buffer_size) {
  68         //cout<<"JackIIODriver::SetBufferSize("<<buffer_size<<")\n";
  69         return JackAudioDriver::SetBufferSize(buffer_size);
  70     }
  71 };
  72
  73 } // end of Jack namespace
  74 #endif // JACKIIODRIVER_H