Experimentally, discard flush request that come before the first pack…

…et -- TuneBlade bug workaround

player.c

@@ -301,6 +301,14 @@ static void free_buffer(void) {
 
 void player_put_packet(seq_t seqno, uint32_t timestamp, uint8_t *data, int len) {
 
+ // ignore a request to flush that has been made before the first packet...
+ if (packet_count==0) {
+ pthread_mutex_lock(&flush_mutex);
+ flush_requested = 0;
+ flush_rtp_timestamp = 0;
+ pthread_mutex_unlock(&flush_mutex);
+ }
+
  pthread_mutex_lock(&ab_mutex);
  packet_count++;
  time_of_last_audio_packet = get_absolute_time_in_fp();

rtsp.c

@@ -237,8 +237,12 @@ int pc_queue_get_item(pc_queue *the_queue, void *the_stuff) {
 // determine if we are the currently playing thread
 static inline int rtsp_playing(void) {
  if (pthread_mutex_trylock(&playing_mutex)) {
+ // if playing_mutex is locked...
+ // return 0 if the threads are different, non-zero if the threads are the same
  return pthread_equal(playing_thread, pthread_self());
  } else {
+ // you actually acquired the playing_mutex, implying that there is no currently playing thread
+ // so unlock it return 0, implying you are not playing
  pthread_mutex_unlock(&playing_mutex);
  return 0;
  }
@@ -1694,6 +1698,7 @@ static void *rtsp_conversation_thread_func(void *pconn) {
  rtp_shutdown();
  pthread_mutex_unlock(&play_lock);
  pthread_mutex_unlock(&playing_mutex);
+ // usleep(1000000);
  } // else {
  //debug(1, "This RTSP conversation thread doesn't think it's playing for a "
  // "close RTSP connection.");