1 #include <alsa/asoundlib.h> 2 3 void dump_event_filter(snd_seq_client_info_t *client_info) { 4 int i, b; 5 6 for (i = 0; i <= 255;) { 7 b = snd_seq_client_info_event_filter_check(client_info, i); 8 i++; 9 printf("%c%s%s", (b ? 'X' : '.'), 10 (i % 8 == 0 ? " " : ""), 11 (i % 32 == 0 ? "\n" : "")); 12 } 13 printf("\n"); 14 } 15 16 int main(void) { 17 snd_seq_client_info_t *client_info; 18 19 snd_seq_client_info_alloca(&client_info); 20 21 printf("first client_info_event_filter :\n"); 22 dump_event_filter(client_info); 23 24 snd_seq_client_info_event_filter_add(client_info, SND_SEQ_EVENT_NOTEON); 25 printf("after snd_seq_client_info_event_filter_add(client_info, SND_SEQ_EVENT_NOTEON);\n"); 26 dump_event_filter(client_info); 27 28 snd_seq_client_info_event_filter_add(client_info, SND_SEQ_EVENT_PGMCHANGE); 29 printf("after snd_seq_client_info_event_filter_add(client_info, SND_SEQ_EVENT_PGMCHANGE);\n"); 30 dump_event_filter(client_info); 31 32 snd_seq_client_info_event_filter_del(client_info, SND_SEQ_EVENT_NOTEON); 33 printf("after snd_seq_client_info_event_filter_del(client_info, SND_SEQ_EVENT_NOTEON);\n"); 34 dump_event_filter(client_info); 35 36 snd_seq_client_info_event_filter_clear(client_info); 37 printf("after snd_seq_client_info_event_filter_clear(client_info);\n"); 38 dump_event_filter(client_info); 39 40 snd_seq_client_info_event_filter_add(client_info, SND_SEQ_EVENT_NOTEON); 41 printf("after snd_seq_client_info_event_filter_add(client_info, SND_SEQ_EVENT_NOTEON);\n"); 42 dump_event_filter(client_info); 43 44 return 0; 45 } 46 47
