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A Midi Mapper class which defines the way MIDI events are translated (or "mapped") to different ones. This way, when two MIDI devices "talk" in a somehow different way, they can still communicate.
When the user has an external keyboard that is not compatible with the General Midi standard, he can use a MIDI mapper file to play files as if the synthesizer was GM compatible.
Please see the KMid documentation ( http://www.arrakis.es/~rlarrosa/kmid.html ) for information on the format of a MIDI mapper definition file, and how they work.
I created this class because I had one of those non-GM keyboards, so it can do everything I needed it to do for my keyboard to work exactly as a GM synth, and a few more things. Currently, it's the most featured MIDI mapper available.
The usage of this class is quite simple, just create an object with a correct filename in the constructor and then use this object as parameter for DeviceManager::setMidiMap().
| MidiMapper (const char *name)
| MidiMapper |
Constructor. Loads a MIDI Mapper definition from a file.
See also: filename()
| ~MidiMapper ()
| ~MidiMapper |
Destructor.
| void loadFile (const char *name)
| loadFile |
Loads a MIDI Mapper definition file (you don't need to use this if you used a correct filename in constructor).
| int ok (void)
| ok |
Returns the status of the object.
| uchar channel (uchar chn)
| channel |
Returns the channel which chn should be mapped to.
| uchar patch (uchar chn,uchar pgm)
| patch |
Returns the patch which pgm used on channel chn should be mapped to.
| uchar key (uchar chn,uchar pgm, uchar note)
| key |
Returns the key that key note playing a pgm patch on channel chn should be mapped to.
| void pitchBender (uchar chn,uchar &lsb,uchar &msb)
| pitchBender |
Returns the value which the pitch bender on channel chn should be mapped to.
| void controller (uchar chn,uchar &ctl,uchar &v)
| controller |
Returns the value which a given controller and its value should be mapped to when played on channel chn.
| const char * filename (void)
| filename |
Returns the path and name of the file which the object loaded the mapper from.