Brix wrote:
> My code doesn't return any error, i just can't hear anything. If i
> do it via the RawMIDI API, it works fine (but it's, bleahh,
> horrible to use).
>
> I thought it was because i didn't assign any path/instrument to
> the midi channels,
The default instrument is 0 (grand piano).
> so i tried to set them via RawMIDI, but it still doesn't work.
You can send program change messages with the sequencer, too.
> void set_chan_instr( int chan, int instrument ) {
> int ch = 0xC0 + chan;
> snd_rawmidi_write(handle_out, &ch, 1);
This does not work on big-endian machines, use char for ch.
> // now we try to set up channel 0 via RawMIDI
> snd_rawmidi_open( NULL, &handle_out, "hw:0,1", 0)
> // ok, let's assign instrument #4
> set_chan_instr( 0, 4 );
If the rawmidi device is already opened, it may not be possible for
the sequencer to open it, too. Call snd_rawmidi_close, or leave this
code out altogether.
> // let's play! (we hope..)
> snd_seq_event_output(seq, &ev);
> snd_seq_drain_output(seq);
> snd_seq_start_queue(seq, queue, NULL);
> snd_seq_drain_output(seq);
>
> return 0;
> }
Directly after starting the queue, the program exists, and the queue
gets destroyed. Try snd_seq_sync_output.
HTH
Clemens
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