Atte Andr? Jensen wrote: > I need a program that will allow me to send predefined program changes > to alsa clients. You could load snd-virmidi, connect its port(s) to the destination port(s), and then call something like amidi -p hw:X,Y -S "c1 23" > If not, could anyone point me in the right direction of some > documentation on how to write such a program, esp how to register as an > alsa-client and exactly what should be send out how for it to be program > change. In C, this would be something like this: snd_seq_t *seq; snd_seq_event_t ev; snd_seq_open(&seq, "default", SND_SEQ_OPEN_DUPLEX, 0); snd_seq_set_client_name(seq, "my funky program changer"); snd_seq_create_simple_port(seq, "source port", SND_SEQ_PORT_CAP_READ, SND_SEQ_PORT_TYPE_MIDI_GENERIC | SND_SEQ_PORT_TYPE_APPLICATION); snd_seq_ev_clear(&ev); snd_seq_ev_set_dest(&ev, dest_client, dest_port); snd_seq_ev_set_direct(&ev); snd_seq_ev_set_pgmchange(&ev, channel, program); snd_seq_event_output_direct(seq, &ev); HTH Clemens
