amiga_midi.cc

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/*
Copyright (C) 2001 Ruediger Hanke

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#if defined(__MORPHOS__) || defined( AMIGA )

#define NO_PPCINLINE_STDARG
#include <proto/exec.h>

// "Remove" has been defined as a macro in ppcinline/exec.h and it will clash with a
// definition in xmidi.h so I better undefine this here.
#undef Remove
#include "amiga_midi.h"
#include "Configuration.h"
extern  Configuration *config;

AmigaMIDI::AmigaMIDI()
{
  int amUnit = 0;

  FileOpen = false;
  amMsgPort = NULL;
  amMidiRequest = NULL;

  config->value( "config/audio/midi/unit", amUnit, 0 );

  /* Open amidi.device */
  amMsgPort = CreateMsgPort();
  if( amMsgPort )
  {
    amMidiRequest = (struct IOMidiRequest *)CreateIORequest( amMsgPort, sizeof( struct IOMidiRequest ) );
    if( amMidiRequest )
    {
      amMidiRequest->amr_Version = 1;
      if( !OpenDevice( "amidi.device", amUnit, (struct IORequest *)amMidiRequest, 0 ) )
        return;
      DeleteIORequest( amMidiRequest );
      amMidiRequest = NULL;
    }
    DeleteMsgPort( amMsgPort );
    amMsgPort = NULL;
  }
}

AmigaMIDI::~AmigaMIDI(void)
{
  stop_track();
  if( amMidiRequest )
  {
    CloseDevice( (struct IORequest *)amMidiRequest );
    DeleteIORequest( amMidiRequest );
    DeleteMsgPort( amMsgPort );
  }
}

void AmigaMIDI::stop_track(void)
{
  if( FileOpen )
  {
    if( amMidiRequest->amr_Std.io_Command == CMD_WRITE )
    {
      AbortIO( (struct IORequest *)amMidiRequest );
      WaitIO( (struct IORequest *)amMidiRequest );
    }

    FileOpen = false;
  }
}

bool AmigaMIDI::is_playing(void)
{
  bool open;

  open = FileOpen && amMidiRequest->amr_Std.io_Command == CMD_WRITE && CheckIO( (struct IORequest *)amMidiRequest ) == NULL;

  return open;
}


void AmigaMIDI::start_track(XMIDIEventList *event_list,bool repeat)
{
  if( amMidiRequest )
  {
    const static char *name = "T:u7midi";
    event_list->Write(name);
    
    stop_track();

    FileOpen = true;
    amMidiRequest->amr_Std.io_Command = CMD_WRITE;
    amMidiRequest->amr_Std.io_Data = (APTR)name;
    amMidiRequest->amr_Std.io_Length = 0;
    amMidiRequest->amr_Loop = repeat ? -1 : 0;
    SendIO( (struct IORequest *)amMidiRequest );
  }
}

const char *AmigaMIDI::copyright(void)
{
#ifdef __MORPHOS__
  return "MorphOS AMIDI MIDI player";
#else
  return "AmigaOS AMIDI MIDI player";
#endif
}

#endif

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