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Small fixes to get ALSA sequencer and example code for alsa-lib (playmidi1) working again.

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This commit is contained in:
Frank van de Pol 1999-05-23 18:34:46 +00:00
parent e0741a5863
commit 0b124b53bf
2 changed files with 23 additions and 16 deletions
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2
src/seq/seq.c
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@ -203,6 +203,8 @@ int snd_seq_set_client_info(void *handle, snd_seq_client_info_t * info)
seq = (snd_seq_t *) handle;
if (!seq || !info)
return -EINVAL;
info->client = seq->client;
info->type = USER_CLIENT;
if (ioctl(seq->fd, SND_SEQ_IOCTL_SET_CLIENT_INFO, info) < 0)
return -errno;
return 0;

37
test/playmidi1.c
View file

@ -45,11 +45,14 @@
//#define DEST_QUEUE_NUMBER 0
#define DEST_QUEUE_NUMBER 7
#define DEST_CLIENT_NUMBER 64
//#define DEST_CLIENT_NUMBER 72
//#define DEST_CLIENT_NUMBER 64
#define DEST_CLIENT_NUMBER 72
//#define DEST_CLIENT_NUMBER 128
//#define DEST_CLIENT_NUMBER 255
//#define DEST_CLIENT_NUMBER SND_SEQ_ADDRESS_BROADCAST
#define DEST_PORT_NUMBER 0
//#define USE_REALTIME
FILE *F;
void* seq_handle = NULL;
@ -61,7 +64,7 @@ int local_tempo = 500000;
static int dest_queue = DEST_QUEUE_NUMBER;
static int dest_client = DEST_CLIENT_NUMBER;
static int dest_port = 0;
static int dest_port = DEST_PORT_NUMBER;
static int source_channel = 0;
static int source_port = 0;
@ -122,7 +125,7 @@ void write_ev_im(snd_seq_event_t * ev)
while (written<0) {
written = snd_seq_event_output (seq_handle, ev);
if (written<0) {
printf("written = %i (%s)\n", written, snd_strerror(written));
//printf("written = %i (%s)\n", written, snd_strerror(written));
sleep(1);
//sched_yield ();
}
@ -152,7 +155,7 @@ void write_ev_var(snd_seq_event_t * ev, int len, void *ptr)
while (written<0) {
written = snd_seq_event_output (seq_handle, ev);
if (written<0) {
printf("written = %i (%s)\n", written, snd_strerror(written));
//printf("written = %i (%s)\n", written, snd_strerror(written));
sleep(1);
//sched_yield ();
}
@ -187,17 +190,19 @@ void do_header(int format, int ntracks, int division)
}
/* set ppq */
{
snd_seq_queue_info_t queue_info;
queue_info.queue = 1; /* queue we're using */
queue_info.ppq = ppq;
//queue_info.tempo = -1; /* don't change */
queue_info.tempo = 500000; /* don't change */
if (snd_seq_set_queue_info (seq_handle, dest_queue, &queue_info) < 0) {
perror("ioctl");
exit(1);
snd_seq_queue_tempo_t tempo;
if (snd_seq_get_queue_tempo(seq_handle, dest_queue, &tempo) < 0) {
perror ("get_queue_tempo");
exit (1);
}
if (tempo.ppq != ppq) {
tempo.ppq = ppq;
if (snd_seq_set_queue_tempo(seq_handle, dest_queue, &tempo) < 0) {
perror ("set_queue_tempo");
exit (1);
}
printf("ALSA Timer updated, PPQ = %d\n", tempo.ppq);
}
printf("ALSA Timer updated, PPQ = %d\n", queue_info.ppq);
}
/* start playing... */
@ -626,7 +631,7 @@ int main(int argc, char *argv[])
src_port_info.type = SND_SEQ_PORT_TYPE_MIDI_GENERIC;
src_port_info.midi_channels = 16;
src_port_info.synth_voices = 0;
src_port_info.use = 0;
//src_port_info.use = 0;
src_port_info.kernel = NULL;
tmp = snd_seq_create_port (seq_handle, &src_port_info);
if (tmp < 0)