int sequencer_play(midi_file_t *mf, int tag, int pitch, int volume)
{
aev_client("sequencer_play()");
if(!midiplayer)
return -1;
midiplayer->pitch = pitch - (60 << 16);
mp_select(midiplayer, mf);
return 0;
}
/**
* mul_route_apsp_get_mp_sp -
*
* Get shortest path between src_sw and dest_sw. If multiple paths exists
* it will select a path based of user provided mp_select function or the
* first avaialbe route if mp_select is not provided
*/
static GSList *
mul_route_apsp_get_mp_sp(void *rt_service, int src_sw, int dest_sw, void *u_arg,
size_t (*mp_select)(void *u_arg, size_t max_routes))
{
unsigned int lock, max_retries = 0;
rt_apsp_t *rt_apsp_info = rt_service;
GSList *route = NULL;
rt_list_t *route_list = NULL;
size_t mp_rt_hint = 0, num_mp_routes = 0;
lweight_pair_t last_hop = { NEIGH_NO_LINK, NEIGH_NO_LINK,
NEIGH_NO_PATH, false };
if (src_sw == dest_sw) {
goto route_same_node;
}
retry:
if (max_retries++ >= RT_MAX_GET_RETRIES) {
c_log_err("Too much writer contention or service died");
return NULL;
}
lock = c_seq_rd_lock(&rt_apsp_info->state_info->lock);
if (!rt_apsp_converged(rt_apsp_info)) {
if (c_seq_rd_unlock(&rt_apsp_info->state_info->lock,
lock)) {
goto retry;
}
c_log_err("%s: Routes not yet converged", FN);
return NULL;
}
if (rt_apsp_get_weight(rt_apsp_info, src_sw, dest_sw) == NEIGH_NO_PATH) {
if (c_seq_rd_unlock(&rt_apsp_info->state_info->lock,
lock)) {
goto retry;
}
c_log_err("%s: Not a neigbour (%d:%d) %d", FN, src_sw, dest_sw,
rt_apsp_get_weight(rt_apsp_info, src_sw, dest_sw));
return NULL;
}
route_list = mul_route_apsp_get_subp(rt_apsp_info, src_sw, dest_sw);
if (mp_select) {
num_mp_routes = mul_route_list_size(route_list);
mp_rt_hint = mp_select(u_arg, num_mp_routes);
if (mp_rt_hint >= num_mp_routes) {
/* Silently ignore any user advice on multi-path selection */
mp_rt_hint = 0;
}
}
route = mul_route_select_single_and_purge_list(route_list, mp_rt_hint);
if (c_seq_rd_unlock(&rt_apsp_info->state_info->lock, lock)) {
mul_destroy_route(route);
goto retry;
}
route_same_node:
add_route_path_elem(&route, dest_sw, &last_hop, true);
mul_route_prep_out(route);
return route;
}
