windows/JackASIODriver.h

   1 /*
   2 Copyright (C) 2006 Grame
   3
   4 Portable Audio I/O Library for ASIO Drivers
   5 Author: Stephane Letz
   6 Based on the Open Source API proposed by Ross Bencina
   7 Copyright (c) 2000-2002 Stephane Letz, Phil Burk, Ross Bencina
   8
   9 This program is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2 of the License, or
  12 (at your option) any later version.
  13
  14 This program is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with this program; if not, write to the Free Software
  21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22
  23 */
  24
  25 #ifndef __JackASIODriver__
  26 #define __JackASIODriver__
  27
  28 #include "JackAudioDriver.h"
  29 #include "portaudio.h"
  30
  31 namespace Jack
  32 {
  33
  34 /*!
  35 \brief The ASIO driver.
  36 */
  37
  38 class JackASIODriver : public JackAudioDriver
  39 {
  40
  41     private:
  42
  43                 PaStream* fStream;
  44                 float** fInputBuffer;
  45                 float** fOutputBuffer;
  46                 PaDeviceIndex fInputDevice;
  47                 PaDeviceIndex fOutputDevice;
  48
  49                 static int Render(const void* inputBuffer, void* outputBuffer,
  50                                                         unsigned long framesPerBuffer,
  51                                                         const PaStreamCallbackTimeInfo* timeInfo,
  52                                                         PaStreamCallbackFlags statusFlags,
  53                                                         void* userData);
  54
  55     public:
  56
  57         JackASIODriver(const char* name, JackEngine* engine, JackSynchro** table)
  58                         : JackAudioDriver(name, engine, table), fStream(NULL), fInputBuffer(NULL), fOutputBuffer(NULL),
  59                         fInputDevice(paNoDevice), fOutputDevice(paNoDevice)
  60                 {}
  61
  62         virtual ~JackASIODriver()
  63                 {}
  64
  65         int Open(jack_nframes_t frames_per_cycle,
  66                  jack_nframes_t rate,
  67                  int capturing,
  68                  int playing,
  69                  int chan_in,
  70                  int chan_out,
  71                                  bool monitor,
  72                  const char* capture_driver_name,
  73                                  const char* playback_driver_name,
  74                                  jack_nframes_t capture_latency,
  75                                  jack_nframes_t playback_latency);
  76
  77         int Close();
  78
  79         int Start();
  80         int Stop();
  81
  82         int Read();
  83         int Write();
  84
  85         int SetBufferSize(jack_nframes_t nframes);
  86
  87         void PrintState();
  88 };
  89
  90 } // end of namespace
  91
  92 #endif