code: public static SpeexPacket create(OggPacket packet) {
         // Special header types detection
         if(isSpeexSpecial(packet)) {
             return new SpeexInfo(packet);
         }
         if (packet.getSequenceNumber() == 1 && packet.getGranulePosition() == 0) {
             return new SpeexTags(packet);
         }
  
         return new SpeexAudioData(packet);
     }
docs: Creates the appropriate {@link SpeexPacket}
  instance based on the type.