X-Git-Url: https://code.octet-stream.net/broadcaster/blobdiff_plain/c94fef11f43279165f39680fa0b0922c86702687..8320951221d45c5f5f3d387c5cb4b97d9fa2094c:/radio/radio.go?ds=sidebyside

diff --git a/radio/radio.go b/radio/radio.go
index f6b3b50..bcf5e38 100644
--- a/radio/radio.go
+++ b/radio/radio.go
@@ -60,17 +60,18 @@ func main() {
 	fileSpecChan := make(chan []protocol.FileSpec)
 	go filesWorker(config.CachePath, fileSpecChan)
 
+	stop := make(chan bool)
 	playlistSpecChan := make(chan []protocol.PlaylistSpec)
-	go playlistWorker(playlistSpecChan)
+	go playlistWorker(playlistSpecChan, stop)
 
 	for {
-		runWebsocket(fileSpecChan, playlistSpecChan)
+		runWebsocket(fileSpecChan, playlistSpecChan, stop)
 		log.Println("Websocket failed, retry in 30 seconds")
 		time.Sleep(time.Second * time.Duration(30))
 	}
 }
 
-func runWebsocket(fileSpecChan chan []protocol.FileSpec, playlistSpecChan chan []protocol.PlaylistSpec) error {
+func runWebsocket(fileSpecChan chan []protocol.FileSpec, playlistSpecChan chan []protocol.PlaylistSpec, stop chan bool) error {
 	log.Println("Establishing websocket connection to:", config.WebsocketURL())
 	ws, err := websocket.Dial(config.WebsocketURL(), "", config.ServerURL)
 	if err != nil {
@@ -120,6 +121,10 @@ func runWebsocket(fileSpecChan chan []protocol.FileSpec, playlistSpecChan chan [
 			playlistsMsg := msg.(protocol.PlaylistsMessage)
 			playlistSpecChan <- playlistsMsg.Playlists
 		}
+
+		if t == protocol.StopType {
+			stop <- true
+		}
 	}
 }
 
@@ -167,10 +172,11 @@ func filesWorker(cachePath string, ch chan []protocol.FileSpec) {
 	}
 }
 
-func playlistWorker(ch <-chan []protocol.PlaylistSpec) {
+func playlistWorker(ch <-chan []protocol.PlaylistSpec, stop <-chan bool) {
 	var specs []protocol.PlaylistSpec
 	isPlaying := false
 	playbackFinished := make(chan error)
+	cancel := make(chan bool)
 	nextId := 0
 	var timer *time.Timer
 
@@ -187,14 +193,20 @@ func playlistWorker(ch <-chan []protocol.PlaylistSpec) {
 		case <-playbackFinished:
 			isPlaying = false
 			doNext = true
+			cancel = make(chan bool)
 		case <-timerCh:
 			timer = nil
 			isPlaying = true
 			for _, v := range specs {
 				if v.Id == nextId {
-					go playPlaylist(v, playbackFinished)
+					go playPlaylist(v, playbackFinished, cancel)
 				}
 			}
+		case <-stop:
+			if isPlaying {
+				log.Println("Cancelling playlist in progress")
+				cancel <- true
+			}
 		}
 
 		if doNext && !isPlaying {
@@ -231,10 +243,10 @@ func playlistWorker(ch <-chan []protocol.PlaylistSpec) {
 	}
 }
 
-func playPlaylist(playlist protocol.PlaylistSpec, playbackFinished chan<- error) {
-	// TODO: possibility of on-demand cancellation
+func playPlaylist(playlist protocol.PlaylistSpec, playbackFinished chan<- error, cancel <-chan bool) {
 	startTime := time.Now()
 	log.Println("Beginning playback of playlist", playlist.Name)
+entries:
 	for _, p := range playlist.Entries {
 		// delay
 		var duration time.Duration
@@ -248,7 +260,11 @@ func playPlaylist(playlist protocol.PlaylistSpec, playbackFinished chan<- error)
 			Seconds:  int(duration.Seconds()),
 			Filename: p.Filename,
 		}
-		<-time.After(duration)
+		select {
+		case <-time.After(duration):
+		case <-cancel:
+			break entries
+		}
 
 		statusCollector.PlaylistBeginWaitForChannel <- BeginWaitForChannelStatus{
 			Playlist: playlist.Name,
@@ -297,7 +313,12 @@ func playPlaylist(playlist protocol.PlaylistSpec, playbackFinished chan<- error)
 			})))
 		}
 
-		<-done
+		select {
+		case <-done:
+		case <-cancel:
+			ptt.DisengagePTT()
+			break entries
+		}
 		ptt.DisengagePTT()
 	}
 	log.Println("Playlist finished", playlist.Name)