common/JackAudioDriver.h

   1 /*
   2 Copyright (C) 2001 Paul Davis
   3 Copyright (C) 2004-2006 Grame
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20
  21 #ifndef __JackAudioDriver__
  22 #define __JackAudioDriver__
  23
  24 #include "JackDriver.h"
  25
  26
  27 namespace Jack
  28 {
  29
  30 /*!
  31 \brief The base class for audio drivers: drivers with audio ports.
  32 */
  33
  34 class EXPORT JackAudioDriver : public JackDriver
  35 {
  36
  37     protected:
  38
  39         int fCaptureChannels;
  40         int fPlaybackChannels;
  41
  42         // static tables since the actual number of ports may be changed by the real driver
  43         // thus dynamic allocation is more difficult to handle
  44         jack_port_id_t fCapturePortList[PORT_NUM];
  45         jack_port_id_t fPlaybackPortList[PORT_NUM];
  46         jack_port_id_t fMonitorPortList[PORT_NUM];
  47
  48         bool fWithMonitorPorts;
  49
  50         jack_default_audio_sample_t* GetInputBuffer(int port_index);
  51         jack_default_audio_sample_t* GetOutputBuffer(int port_index);
  52         jack_default_audio_sample_t* GetMonitorBuffer(int port_index);
  53
  54     private:
  55
  56         int ProcessAsync();
  57         int ProcessSync();
  58
  59     public:
  60
  61         JackAudioDriver(const char* name, JackEngine* engine, JackSynchro** table);
  62         virtual ~JackAudioDriver();
  63
  64         virtual int Process();
  65
  66         virtual int Open(jack_nframes_t nframes,
  67                          jack_nframes_t samplerate,
  68                          int capturing,
  69                          int playing,
  70                          int inchannels,
  71                          int outchannels,
  72                          bool monitor,
  73                          const char* capture_driver_name,
  74                          const char* playback_driver_name,
  75                          jack_nframes_t capture_latency,
  76                          jack_nframes_t playback_latency);
  77
  78         virtual int Attach();
  79         virtual int Detach();
  80         virtual int Write();
  81
  82         virtual void NotifyXRun(jack_time_t callback_usecs); // XRun notification sent by the driver
  83
  84 };
  85
  86 } // end of namespace
  87
  88 #endif