use float value from OS seek

backend/mpmedia_mac.go

@@ -27,7 +27,7 @@ import (
 // os_remote_command_callback is called by Objective-C when incoming OS media commands are received.
 //
 //export os_remote_command_callback
-func os_remote_command_callback(command C.Command, value C.int) {
+func os_remote_command_callback(command C.Command, value C.double) {
 	switch command {
 	case C.PLAY:
 		mpMediaEventRecipient.OnCommandPlay()
@@ -42,7 +42,7 @@ func os_remote_command_callback(command C.Command, value C.int) {
 	case C.NEXT_TRACK:
 		mpMediaEventRecipient.OnCommandNextTrack()
 	case C.SEEK:
-		mpMediaEventRecipient.OnCommandSeek(int(value))
+		mpMediaEventRecipient.OnCommandSeek(float64(value))
 	default:
 		log.Printf("unknown OS command received: %v", command)
 	}
@@ -172,9 +172,9 @@ func (mp *MPMediaHandler) OnCommandPreviousTrack() {
 }
 
 // MPMediaHandler instance received OS command to 'seek'
-func (mp *MPMediaHandler) OnCommandSeek(positionSeconds int) {
+func (mp *MPMediaHandler) OnCommandSeek(positionSeconds float64) {
 	if mp == nil || mp.player == nil {
 		return
 	}
-	mp.player.Seek(fmt.Sprintf("%d", positionSeconds), player.SeekAbsolute)
+	mp.player.Seek(fmt.Sprintf("%0.2f", positionSeconds), player.SeekAbsolute)
 }

backend/mpmediabridge.h

@@ -33,7 +33,7 @@ void register_os_remote_commands();
 * Go-backed callback to static function that is called when OS remote commands are received.
 * If a value is anticipated with the specified command, the 'value' argument will be non-zero.
 */
-void os_remote_command_callback(Command command, int value);
+void os_remote_command_callback(Command command, double value);
 
 /**
  * Updates the "Now Playing" information on macOS for media playback

backend/mpmediabridge.m

@@ -39,9 +39,7 @@ void register_os_remote_commands() {
 
     [commandCenter.changePlaybackPositionCommand addTargetWithHandler:^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent * _Nonnull event) {
         MPChangePlaybackPositionCommandEvent *positionChangeEvent = (MPChangePlaybackPositionCommandEvent *)event;
-        double posSecDouble = positionChangeEvent.positionTime;
-        int posSeconds = (int)posSecDouble; 
-        os_remote_command_callback(SEEK, posSeconds);
+        os_remote_command_callback(SEEK, positionChangeEvent.positionTime);
         return MPRemoteCommandHandlerStatusSuccess;
     }];
 }