static int _applemidi_idle_timeout( void * drv, struct timespec * ts ) {
struct MIDIDriverAppleMIDI * driver = drv;
struct sockaddr * addr;
socklen_t size;
_applemidi_update_runloop_source( driver );
RTPSessionNextPeer( driver->rtp_session, &(driver->peer) );
if( driver->peer != NULL ) {
/* check if receiver feedback needs to be sent */
if( driver->sync == 0 ) {
/* no sync packets active. start new sync */
RTPPeerGetAddress( driver->peer, &size, &addr );
return _applemidi_start_sync( driver, driver->rtp_socket, size, addr );
}
}
/* check for messages in dispatch (incoming) queue:
* if message needs to be dispatched (timestamp >= now+latency)
* call MIDIDriverAppleMIDIReceiveMessage
* send receiver feedback
* if the last synchronization happened a certain time ago, synchronize again */
return 0;
}
static int _applemidi_init_addr_with_peer( struct AppleMIDICommand * command, struct RTPPeer * peer ) {
struct sockaddr * addr;
socklen_t size;
RTPPeerGetAddress( peer, &size, &addr );
memcpy( &(command->addr), addr, size );
command->size = size;
return 0;
}
static int _applemidi_disconnect_peer( struct MIDIDriverAppleMIDI * driver, struct RTPPeer * peer ) {
int result = 0;
struct sockaddr * rtp_addr = NULL;
struct sockaddr_storage addr;
socklen_t size;
if( RTPPeerGetAddress( peer, &size, &rtp_addr ) || rtp_addr == NULL ) {
return 1;
}
_applemidi_control_addr( size, rtp_addr, (struct sockaddr *) &addr );
result = _applemidi_endsession( driver, driver->control_socket, size, (struct sockaddr *) &addr );
RTPSessionRemovePeer( driver->rtp_session, peer );
return result;
}
static int _applemidi_disconnect_peer(struct MIDIDriverAppleMIDI *driver,
struct RTPPeer *peer)
{
int result = 0;
struct sockaddr_in *rtp_addr = NULL;
int size;
if (RTPPeerGetAddress(peer, &size, &rtp_addr) || rtp_addr == NULL) {
return 1;
}
result = _applemidi_endsession(driver, driver->control_socket->sk, size,
(struct sockaddr_in *)&rtp_addr);
RTPSessionRemovePeer(driver->rtp_session, peer);
return result;
}
void _applemidi_idle_timeout(unsigned long data)
{
struct sockaddr_in *addr;
int size;
struct MIDIDriverAppleMIDI *driver = (struct MIDIDriverAppleMIDI *)data;
mod_timer(&driver->timer, jiffies + msecs_to_jiffies(1500));
pr_debug("====called timeout (%ld) dat: %lx ====\n", jiffies, data);
if (spin_trylock(&(driver->lock))) {
RTPSessionNextPeer(driver->rtp_session, &(driver->peer));
if (driver->peer != NULL) {
/* check if receiver feedback needs to be sent */
if (driver->sync == 0) {
/* no sync packets active. start new sync */
RTPPeerGetAddress(driver->peer, &size, &addr);
pr_debug("start sync with client: %pI4\n",
&addr->sin_addr.s_addr);
_applemidi_start_sync(
driver, driver->rtp_socket->sk, size, addr);
// no return
}
}
spin_unlock(&(driver->lock));
} else {
pr_warn("could not so sync timeout because of midi event\n");
}
//
// /* check for messages in dispatch (incoming) queue:
// * if message needs to be dispatched (timestamp >= now+latency)
// * call MIDIDriverAppleMIDIReceiveMessage
// * send receiver feedback
// * if the last synchronization happened a certain time ago,
// synchronize again */
//
// return 0;
}
