DOTT Midi playback questions

[NovaCoder]

Hiya,

 

In my quick & dirty Amiga port I'm having trouble getting the longer running background type music to loop (re-start), apparently this happens through the soundKludge do_command code?

 

Can anyone see why music is not restarted?

 

This do_command code is just for DOTT BTW, I know SAM & MAX etc uses some of those 'stubbed out' commands.

 

int AmigaSoundEngine::doCommand(int a, int b, int c, int d, int e, int f, int g, int h) {
byte cmd = a&0xFF;
byte param = a>>8;

if (param==0) {
switch(cmd)
{ case 6: return 1;
  case 7: return 1;
  case 8: startMusic(b); return 1;
  case 9: stopMusic(b); return 0;
  //case 10: stopAllSounds(); return 0;
  case 11: stopAllSounds(); return 0;
  case 13: return isMusicPlaying(b);
  case 16: return 1;
  case 17: return 1;
  case 18: return 1;
  default: warning("SoundEngine::do_command invalid command %d", cmd);
}
} else if (param==1) {

switch(cmd) {
	case 0: return 1;
	case 1: return 0;
	case 2: return 1;
	case 3: return 0;
	case 4: return 1;
	case 5: return 0;
	case 6: return 0;
	case 7: return 1;
	case 8: return 1;
	case 9: return 1;
	case 10: return 0;
	case 11: return 0;
	case 12: return 1;
	case 13: return 1;
	case 14: return 1;
	case 15: return 1;
	case 16: return 1;
	case 19: return 1;
	case 20: return 1;
	case 21: return -1;
	case 22:  return 0;
	case 23: return 1;
	case 24: return 0;
	default: warning("SoundEngine::do_command default midi command %d", cmd);
		 return -1;
	}
}

return -1;
}

 

Thanks

[jestar_jokin]

Hiya,

 

In my quick & dirty Amiga port I'm having trouble getting the longer running background type music to loop (re-start), apparently this happens through the soundKludge do_command code?

 

Can anyone see why music is not restarted?

 

This do_command code is just for DOTT BTW, I know SAM & MAX etc uses some of those 'stubbed out' commands.

 

int AmigaSoundEngine::doCommand(int a, int b, int c, int d, int e, int f, int g, int h) {
byte cmd = a&0xFF;
byte param = a>>8;

if (param==0) {
switch(cmd)
{ case 6: return 1;
  case 7: return 1;
  case 8: startMusic(b); return 1;
  case 9: stopMusic(b); return 0;
  //case 10: stopAllSounds(); return 0;
  case 11: stopAllSounds(); return 0;
  case 13: return isMusicPlaying(b);
  case 16: return 1;
  case 17: return 1;
  case 18: return 1;
  default: warning("SoundEngine::do_command invalid command %d", cmd);
}
} else if (param==1) {

switch(cmd) {
	case 0: return 1;
	case 1: return 0;
	case 2: return 1;
	case 3: return 0;
	case 4: return 1;
	case 5: return 0;
	case 6: return 0;
	case 7: return 1;
	case 8: return 1;
	case 9: return 1;
	case 10: return 0;
	case 11: return 0;
	case 12: return 1;
	case 13: return 1;
	case 14: return 1;
	case 15: return 1;
	case 16: return 1;
	case 19: return 1;
	case 20: return 1;
	case 21: return -1;
	case 22:  return 0;
	case 23: return 1;
	case 24: return 0;
	default: warning("SoundEngine::do_command default midi command %d", cmd);
		 return -1;
	}
}

return -1;
}

 

Thanks

 

soundKludge is basically the interface to iMUSE through SCUMM scripts. I don't know iMUSE intimately enough to help, but I believe all looping information is contained as SysEx messages in the MIDI stream.

 

The ScummC documentation on iMUSE might help:

http://alban.dotsec.net/15.html

[NovaCoder]

Hiya,

 

Thanks for that link, very helpful

 

I found out the answer on another forum, cmnd 15 (when param == 1) sets up a 'hook jump' which means that the track is looped.