add playlists

1 files changed, 44 insertions, 12 deletions

diff --git a/lib/nav/core.cpp b/lib/nav/core.cpp
index 9314d2c1..c9dcb502 100644
--- a/lib/nav/core.cpp
+++ b/lib/nav/core.cpp
@@ -11,21 +11,31 @@ void eNavigation::serviceEvent(iPlayableService* service, int event)
 	switch (event)
 	{
 	case iPlayableService::evEnd:
+		assert(m_playlist); /* we need to have a playlist */
+		
 			/* at first, kill the running service */
 		m_event(this, evStopService);
 		m_runningService = 0;
 		m_service_event_conn = 0;
-			/* our running main service stopped. remove it from playlist */
-		if (!m_playlist.empty())
-			m_playlist.erase(m_playlist.begin());
-		if (!m_playlist.empty())
+			/* our running main service stopped. identify what to do next. */
+			
+			/* unless the playlist current position is invalid (because there was */
+			/* playlist, for example when the service was engaged with playService */
+		if (m_playlist->m_current != m_playlist->end())
+			++m_playlist->m_current;
+			
+			/* was the current service the last one? */
+		if (m_playlist->m_current == m_playlist->end())
 		{
-			RESULT res;
-			res = playService(m_playlist.front());
-			if (res)
-				m_event(this, evPlayFailed);
-		} else
 			m_event(this, evPlaylistDone);
+			break;
+		}
+
+			/* there is another service in the playlist. play it. */
+		RESULT res;
+		res = playService(*m_playlist->m_current);
+		if (res)
+			m_event(this, evPlayFailed);
 		break;
 	case iPlayableService::evStart:
 		m_event(this, evNewService);
@@ -49,10 +59,20 @@ RESULT eNavigation::playService(const eServiceReference &service)
 
 RESULT eNavigation::enqueueService(const eServiceReference &service)
 {
-	int doplay = m_playlist.empty();
-	m_playlist.push_back(service);
+	assert(m_playlist);
+		/* check if we need to play after the service was enqueued. */
+	int doplay = m_playlist->m_current == m_playlist->end();
+	
+		/* add the service to the playlist. the playlist's m_current */
+		/* points either to a service before the last or 'doplay' is set. */
+	m_playlist->push_back(service);
+
 	if (doplay)
-		return playService(m_playlist.front());
+	{
+		m_playlist->m_current = m_playlist->end();
+		--m_playlist->m_current;
+		return playService(*m_playlist->m_current);
+	}
 	return 0;
 }
 
@@ -68,6 +88,14 @@ RESULT eNavigation::getCurrentService(ePtr<iPlayableService> &service)
 	return 0;
 }
 
+RESULT eNavigation::getPlaylist(ePtr<ePlaylist> &playlist)
+{
+	if (!m_playlist)
+		return -1;
+	playlist = m_playlist;
+	return 0;
+}
+
 RESULT eNavigation::pause(int dop)
 {
 	if (!m_runningService)
@@ -85,6 +113,10 @@ eNavigation::eNavigation(iServiceHandler *serviceHandler): ref(0)
 {
 	assert(serviceHandler);
 	m_servicehandler = serviceHandler;
+	m_playlist = new ePlaylist;
+
+		/* start with no current selection */
+	m_playlist->m_current = m_playlist->end();
 }
 
 eNavigation::~eNavigation()