v2/midiio_alsa.h

   1 /*----------------------------------------------------------------------------
   2     ChucK Concurrent, On-the-fly Audio Programming Language
   3       Compiler and Virtual Machine
   4
   5     Copyright (c) 2004 Ge Wang and Perry R. Cook.  All rights reserved.
   6       http://chuck.cs.princeton.edu/
   7       http://soundlab.cs.princeton.edu/
   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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22     U.S.A.
  23 -----------------------------------------------------------------------------*/
  24
  25 //-----------------------------------------------------------------------------
  26 // file: midiio_alsa.h
  27 // desc: midi io header for alsa
  28 //
  29 // author: Ge Wang (gewang@cs.princeton.edu)
  30 //         Perry R. Cook (prc@cs.princeton.edu)
  31 //-----------------------------------------------------------------------------
  32 #ifndef __MIDI_IO_H__
  33 #define __MIDI_IO_H__
  34
  35
  36 #include <alsa/asoundlib.h>
  37 #include <pthread.h>
  38 #include "util_buffers.h"
  39
  40
  41 #ifndef CALLBACK
  42 #define CALLBACK
  43 #endif
  44
  45
  46 //-----------------------------------------------------------------------------
  47 // definitions
  48 //-----------------------------------------------------------------------------
  49 union MidiMsg
  50 {
  51     BYTE__  data[4];
  52     DWORD__ dw;
  53 };
  54
  55
  56
  57
  58 //-----------------------------------------------------------------------------
  59 // name: class MidiOut
  60 // desc: midi out
  61 //-----------------------------------------------------------------------------
  62 class MidiOut
  63 {
  64 public:
  65     MidiOut();
  66     ~MidiOut();
  67
  68 public:
  69     BOOL__ open( int device_num = 0 );
  70     BOOL__ close();
  71
  72 public:
  73     UINT__ send( BYTE__ status );
  74     UINT__ send( BYTE__ status, BYTE__ data1 );
  75     UINT__ send( BYTE__ status, BYTE__ data1, BYTE__ data2 );
  76     UINT__ send( const MidiMsg * msg );
  77     BOOL__ drain();
  78
  79 protected:
  80     UINT__ m_device_num;
  81     snd_rawmidi_t * m_midi_out;
  82 };
  83
  84
  85
  86
  87 //-----------------------------------------------------------------------------
  88 // name: class MidiIn
  89 // desc: midi
  90 //-----------------------------------------------------------------------------
  91 class MidiIn
  92 {
  93 public:
  94     MidiIn();
  95     ~MidiIn();
  96
  97 public:
  98     BOOL__ open( int device_num = 0 );
  99     BOOL__ close();
 100
 101 public:
 102     UINT__ recv( MidiMsg * msg );
 103
 104 public:
 105     static void * midi_in_cb( void * min );
 106
 107 protected:
 108     UINT__ m_device_num;
 109     snd_rawmidi_t * m_midi_in;
 110     CBuffer m_buffer;
 111
 112     pthread_t m_cb_thread_id;
 113     pthread_mutex_t m_mutex;
 114 };
 115
 116
 117
 118
 119 #endif