solaris/oss/JackOSSDriver.h

   1 /*
   2 Copyright (C) 2003-2007 Jussi Laako <jussi@sonarnerd.net>
   3 Copyright (C) 2008 Grame & RTL 2008
   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 __JackOSSDriver__
  22 #define __JackOSSDriver__
  23
  24 #include "JackAudioDriver.h"
  25
  26 namespace Jack
  27 {
  28
  29 typedef jack_default_audio_sample_t jack_sample_t;
  30
  31 #define OSS_DRIVER_DEF_DEV      "/dev/dsp"
  32 #define OSS_DRIVER_DEF_FS       48000
  33 #define OSS_DRIVER_DEF_BLKSIZE  1024
  34 #define OSS_DRIVER_DEF_NPERIODS 1
  35 #define OSS_DRIVER_DEF_BITS     16
  36 #define OSS_DRIVER_DEF_INS      2
  37 #define OSS_DRIVER_DEF_OUTS     2
  38
  39 /*!
  40 \brief The OSS driver.
  41 */
  42
  43 class JackOSSDriver : public JackAudioDriver
  44 {
  45
  46     enum { kRead = 1, kWrite = 2, kReadWrite = 3 };
  47
  48     private:
  49
  50         int fInFD;
  51         int fOutFD;
  52
  53         int fBits;
  54         int fSampleFormat;
  55         int fNperiods;
  56         unsigned int fSampleSize;
  57         int fRWMode;
  58         bool fExcl;
  59         bool fIgnoreHW;
  60
  61         unsigned int fInputBufferSize;
  62         unsigned int fOutputBufferSize;
  63
  64         void* fInputBuffer;
  65         void* fOutputBuffer;
  66
  67         bool fFirstCycle;
  68
  69         int OpenInput();
  70         int OpenOutput();
  71         int OpenAux();
  72         void CloseAux();
  73         void SetSampleFormat();
  74         void DisplayDeviceInfo();
  75
  76         // Redefining since timing for CPU load is specific
  77         int ProcessSync();
  78
  79     public:
  80
  81         JackOSSDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
  82                 : JackAudioDriver(name, alias, engine, table),
  83                 fInFD(-1), fOutFD(-1), fBits(0),
  84                 fSampleFormat(0), fNperiods(0), fRWMode(0), fExcl(false), fIgnoreHW(true),
  85                 fInputBufferSize(0), fOutputBufferSize(0),
  86                 fInputBuffer(NULL), fOutputBuffer(NULL), fFirstCycle(true)
  87         {}
  88
  89         virtual ~JackOSSDriver()
  90         {}
  91
  92         int Open(jack_nframes_t frames_per_cycle,
  93                  int user_nperiods,
  94                  jack_nframes_t rate,
  95                  bool capturing,
  96                  bool playing,
  97                  int chan_in,
  98                  int chan_out,
  99                  bool vmix,
 100                  bool monitor,
 101                  const char* capture_driver_name,
 102                  const char* playback_driver_name,
 103                  jack_nframes_t capture_latency,
 104                  jack_nframes_t playback_latency,
 105                  int bits,
 106                  bool ignorehwbuf);
 107
 108         int Close();
 109
 110         int Read();
 111         int Write();
 112
 113         // BufferSize can be changed
 114         bool IsFixedBufferSize()
 115         {
 116             return false;
 117         }
 118
 119         int SetBufferSize(jack_nframes_t buffer_size);
 120
 121 };
 122
 123 } // end of namespace
 124
 125 #endif