fix(player): repair gstreamer bus loop

internal/player/gstreamer_player.go

@@ -108,11 +108,10 @@ type GStreamerPlayer struct {
 	duration time.Duration
 
 	// Bus handling
-	busCh chan *C.GstMessage
-	eos    chan struct{}
+	busQuit chan struct{}
 	busDone chan struct{}
-}
-
+	eos     bool
+	state   C.GstState
 }
 
 type busEvent struct {
@@ -628,6 +627,7 @@ func (p *GStreamerPlayer) busLoop() {
 		msgType := C.vt_gst_message_type(msg)
 		switch msgType {
 		case C.GST_MESSAGE_ERROR:
+			errMsg := C.vt_gst_error_from_message(msg)
 			p.mu.Lock()
 			if errMsg != nil {
 				p.lastErr = C.GoString(errMsg)
@@ -669,81 +669,6 @@ func (p *GStreamerPlayer) busLoop() {
 		C.gst_message_unref(msg)
 	}
 }
-		p.mu.Unlock()
-	}()
-
-	for {
-		select {
-		case <-p.busQuit:
-			return
-		default:
-		}
-
-		p.mu.Lock()
-		bus := p.bus
-		p.mu.Unlock()
-		if bus == nil {
-			time.Sleep(100 * time.Millisecond)
-			continue
-		}
-
-		msg := C.gst_bus_timed_pop_filtered(bus, 200*1000*1000, C.vt_gst_message_mask())
-		if msg == nil {
-			continue
-		}
-
-		msgType := C.vt_gst_message_type(msg)
-		switch msgType {
-		case C.GST_MESSAGE_ERROR:
-			errMsg := C.vt_gst_error_from_message(msg)
-			p.mu.Lock()
-			if errMsg != nil {
-				p.lastErr = C.GoString(errMsg)
-				C.vt_gst_free_error(errMsg)
-			} else {
-				p.lastErr = "gstreamer error"
-			}
-			p.mode = StateError
-			evt := busEvent{Kind: "error", Info: p.lastErr}
-			p.mu.Unlock()
-			p.pushEvent(evt)
-		case C.GST_MESSAGE_EOS:
-			p.mu.Lock()
-		p.eos = true
-			p.mode = StateEOS
-			p.mu.Unlock()
-			p.pushEvent(busEvent{Kind: "eos"})
-		case C.GST_MESSAGE_STATE_CHANGED:
-			var oldState C.GstState
-			var newState C.GstState
-			var pending C.GstState
-			C.vt_gst_parse_state_changed(msg, &oldState, &newState, &pending)
-			p.mu.Lock()
-			p.state = newState
-			p.mu.Unlock()
-			p.pushEvent(busEvent{Kind: "state_changed", State: newState})
-		case C.GST_MESSAGE_DURATION_CHANGED:
-			p.updateDuration()
-			p.pushEvent(busEvent{Kind: "duration_changed"})
-		case C.GST_MESSAGE_CLOCK_LOST:
-			p.mu.Lock()
-			shouldRecover := !p.paused && p.pipeline != nil
-			p.mu.Unlock()
-			if shouldRecover {
-				C.gst_element_set_state(p.pipeline, C.GST_STATE_PAUSED)
-				C.gst_element_set_state(p.pipeline, C.GST_STATE_PLAYING)
-			}
-			p.pushEvent(busEvent{Kind: "clock_lost"})
-		}
-		C.gst_message_unref(msg)
-	default:
-	}
-	p.mu.Unlock()
-			p.pushEvent(busEvent{Kind: "clock_lost"})
-		}
-		C.gst_message_unref(msg)
-	}
-}
 
 func (p *GStreamerPlayer) updateDuration() {
 	p.mu.Lock()