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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link=blue vlink=purple style='word-wrap: break-word;-webkit-nbsp-mode: space;-webkit-line-break: after-white-space'><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:10.5pt;text-autospace:none'><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>I want to subclass RTSPServer and RTSPClient classes to extend my specific functions. However, with the </span><span lang=EN-US style='font-family:新宋体;color:blue;background:silver;mso-highlight:silver'>private</span><span lang=EN-US style='font-family:新宋体;color:teal;background:silver;mso-highlight:silver'> </span><span lang=EN-US style='font-family:新宋体;color:blue;background:silver;mso-highlight:silver'>class</span><span lang=EN-US style='font-family:新宋体;color:teal;background:silver;mso-highlight:silver'> </span><span lang=EN-US style='font-family:新宋体;color:#018081;background:silver;mso-highlight:silver'>RequestQueue</span><span lang=EN-US style='font-family:新宋体;color:teal;background:silver;mso-highlight:silver'> </span><span lang=EN-US style='font-family:新宋体;color:teal'>and some other private attributes defined within the </span><span lang=EN-US style='font-family:新宋体;color:#018081;background:silver;mso-highlight:silver'>RTSPClient</span><span lang=EN-US style='font-family:新宋体;color:#018081'> class, I found it hard to overide just a few method to make it, because my overrided methods can</span><span lang=EN-US style='color:#018081'>’</span><span lang=EN-US style='font-family:新宋体;color:#018081'>t access those private </span><span lang=EN-US style='font-family:新宋体;color:teal'>attributes</span><span lang=EN-US style='font-family:新宋体;color:#018081'> in the </span><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>RTSPClient class. Also, when I want to add another video format to be processed by the server, I found that I need to override the c</span><span lang=EN-US style='font-family:新宋体;color:#018081;background:silver;mso-highlight:silver'>eateSourceObjects</span><span lang=EN-US style='font-family:新宋体;color:teal'> method to generate my specific RTPSource. So, I subclassed MediaSubsession class(eg, myMediaSubsession) and override its </span><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>cr</span><span lang=EN-US style='font-family:新宋体;color:#018081;background:silver;mso-highlight:silver'>eateSourceObjects</span><span lang=EN-US style='font-family:新宋体;color:#018081'>. However, </span><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>c</span><span lang=EN-US style='font-family:新宋体;color:#018081;background:silver;mso-highlight:silver'>eateSourceObjects</span><span lang=EN-US style='font-family:新宋体;color:#018081'> is called by </span><span lang=EN-US style='font-family:新宋体;color:teal'>MediaSubsession::initiate() method, which in turn requires me to override it. After I have done that, I found the myMediaSubsession:: initiate() method still call the MediaSubsession::</span><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'> c</span><span lang=EN-US style='font-family:新宋体;color:#018081;background:silver;mso-highlight:silver'>eateSourceObjects</span><span lang=EN-US style='font-family:新宋体;color:#018081'> rather than </span><span lang=EN-US style='font-family:新宋体;color:teal'>myMediaSubsession::</span><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'> c</span><span lang=EN-US style='font-family:新宋体;color:#018081;background:silver;mso-highlight:silver'>eateSourceObjects</span><span lang=EN-US style='font-family:新宋体;color:teal'><o:p></o:p></span></p><p class=MsoNormal style='text-indent:12.0pt;text-autospace:none'><span lang=EN-US style='font-family:新宋体;color:teal'><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:12.0pt;text-autospace:none'><span lang=EN-US style='font-family:新宋体;color:teal'>I wonder if I </span><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>want to subclass</span><span lang=EN-US style='font-family:新宋体;color:teal'> </span><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>RTSPServer and RTSPClient classes, what is the minimum classes that I also need to subclass them to make it work? (RTSPClientSession, MediaSubSession, or …)<o:p></o:p></span></p></div></body></html>