https://blog.youkuaiyun.com/printf0eduzh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/printf0edu/article/details/6095525https://blog.youkuaiyun.com/printf0edu/article/details/6095525printf0eduFri, 24 Dec 2010 07:44:00 +0800《Windows程序设计》V2 Chap 4 Windows图形界面
 
1. 定时器例子04TimerDemo
 
* BegingPaint与GetDC区别：
BegingPaint用在WM_PAINT响应中，获得无效的客户区域DC，而GetDC获得整个客户区的DC，并可在任何位置。
WM_PAINT仅仅在客户区发生变化时使用，也可被InvalidateRect触发。
 
 
 ]]>https://blog.youkuaiyun.com/printf0edu/article/details/6083690https://blog.youkuaiyun.com/printf0edu/article/details/6083690printf0eduSat, 18 Dec 2010 11:08:00 +0800《Windows程序设计》 V2 人民邮电出版社
 
Chap 4 Windows图形界面
 
1. 资源
应用程序窗口类注册时，一定要指定菜单，否则，出错：
 wndclass.lpszMenuName = (LPSTR)IDR_TYPER; 
 
2. SimpleTyper程序
* 单击左键显示座标过程
系统发送WM_LBUTTONDOWN消息,WinProc接收WM_LBUTTON消息https://blog.youkuaiyun.com/printf0edu/article/details/6083054https://blog.youkuaiyun.com/printf0edu/article/details/6083054printf0eduFri, 17 Dec 2010 20:13:00 +0800UC故事
 
1. SIP与H323的简单比较
 
相同点
* 均为多媒体通讯的应用层控制（售令）协议，功能基本相同
* 均用RTP作为媒体交换协议
 
不同
* H323 制定者为国际电联ITU，希望保持与PSTN的互通；SIP为Internet工作组
* H323成熟，复杂；SIP轻量，灵活
* H323二进制协议；SIP文本协议
* H323有单独的呼叫建立及媒体协商过]]>https://blog.youkuaiyun.com/printf0edu/article/details/6081330https://blog.youkuaiyun.com/printf0edu/article/details/6081330printf0eduFri, 17 Dec 2010 07:50:00 +0800读书时间 《深入浅出Android》
 
Chap 4 创建用户界面
 
1. AndroidManifest.xml
每个具体的Tag实际上是一个类名，比如，LinearLayout，只不过省略了包名
自定义的控件，将文工团packagename.classname形式，如com.studio.android.chap4.ex13.NeverEdit
 
2. View.setOnXXXListener(...)]]>https://blog.youkuaiyun.com/printf0edu/article/details/6078619https://blog.youkuaiyun.com/printf0edu/article/details/6078619printf0eduWed, 15 Dec 2010 21:10:00 +0800读书时间《深入浅出Android》
 
Chap 1.
1. target与AVD
target指Android的不同SDK版本；AVD（Anadroid Virtual Device）是虚拟役备，必须指定安装的target
一个target可以用很多AVD
 
Chap 3.
 
1. 应用程序基本构件
Activity - UI界面类
Service - 无界面后台执行类，长时间，]]>https://blog.youkuaiyun.com/printf0edu/article/details/6074186https://blog.youkuaiyun.com/printf0edu/article/details/6074186printf0eduMon, 13 Dec 2010 21:57:00 +0800《C++网络编程》V1 --- 运用ACE和模式消除复杂性
 
1. 传统OS API编程的问题
 
* 众多领域的挑战，如并发、线程/进程模型、同步等等
* 不同OS API的语法语义不同，跨平台困难 -------- 如进程、线程、锁、Socket、共享内存、共享库(DLL/SO)、文件等等
* 缺乏类型安全机制，容易出现莫名错误
* C函数接口，缺乏C++面向对象特性带来的封装性好处 ---------- 如模板方法、缺]]>https://blog.youkuaiyun.com/printf0edu/article/details/6072061https://blog.youkuaiyun.com/printf0edu/article/details/6072061printf0eduSun, 12 Dec 2010 22:26:00 +0800《Windows程序设计》第2版 王艳平
 
Chap 3 Wind32执行单元
 
1. __stdcall的参数含义
参数右至左入stack
被调用程序负责清理stack
 
2. WaitForSingleObject(...)
http://happyhaoyun.blog.163.com/blog/static/2119926020103298504032/
 
3. 线程内核]]>https://blog.youkuaiyun.com/printf0edu/article/details/6056958https://blog.youkuaiyun.com/printf0edu/article/details/6056958printf0eduSun, 05 Dec 2010 22:14:00 +0800《VOIP技术架构》人民邮电
 
1. SIP
Q Via Header的作用？
Q SIP与323之间的关系？
 
@ A good article about H323 and SIP and H248: http://www.doc88.com/p-22529463796.html
@ H323与SIP的异同 http://www.doc88.com/p-97216106225.html
 
 https://blog.youkuaiyun.com/printf0edu/article/details/6055404https://blog.youkuaiyun.com/printf0edu/article/details/6055404printf0eduSat, 04 Dec 2010 22:15:00 +0800读书时间《VOIP技术架构》人民邮电
 
Q H323与我们Conference之间的关系？架构上如何理解H323终端与Conference的集成？
Q 我们项目中的323GW是基于Windows的？其在conference中的地位是否像一个特殊的Conference Client ？对于323网络，它是一个什么实体？
Q 323GW项目中，GateKeeper在哪里？信息交互过程如何进行的？
 
@ T.120协议簇值得仔细研究一番<]]>https://blog.youkuaiyun.com/printf0edu/article/details/6041908https://blog.youkuaiyun.com/printf0edu/article/details/6041908printf0eduMon, 29 Nov 2010 08:33:00 +0800https://blog.youkuaiyun.com/printf0edu/article/details/6040496https://blog.youkuaiyun.com/printf0edu/article/details/6040496printf0eduSun, 28 Nov 2010 10:40:00 +08001. Conference概要设计
Q 一个1000人的conference，controller如何分配client到不同server？是初期一次性分配还是逐渐分配？
Q top与sub server是一个动态概念，一个物理server可能同时为top/sub server（for不同conference)
 
 
2. C详细设计(old)
* Backup的切换有一定时延
Q Active死活信息如何传递给IServer]]>https://blog.youkuaiyun.com/printf0edu/article/details/6038707https://blog.youkuaiyun.com/printf0edu/article/details/6038707printf0eduSat, 27 Nov 2010 07:27:00 +0800https://blog.youkuaiyun.com/printf0edu/article/details/6030764https://blog.youkuaiyun.com/printf0edu/article/details/6030764printf0eduTue, 23 Nov 2010 21:45:00 +08001. 一些比较重要的知识点：
 
* 视频分辨率与码流
* H264算法相关参数理解
* 白板功能的实现机制
* 注释功能的实现机制
 
2. 一些问题：
 
* 虚拟打印与NDF之关系？
* XXXSink代表什么意思？
 ]]>https://blog.youkuaiyun.com/printf0edu/article/details/6011453https://blog.youkuaiyun.com/printf0edu/article/details/6011453printf0eduTue, 16 Nov 2010 08:41:00 +08001. 问题
 
../../ndk-build
失败
Error Message: You are using a non-Cygwin compatible make program.
Currently using: E:/siyu/bin/i386-win32/make
 
估计原因：这是freepascal的make文件，可能安装过程未能安装成功新的make，需要重新安装
 
 ]]>https://blog.youkuaiyun.com/printf0edu/article/details/5994493https://blog.youkuaiyun.com/printf0edu/article/details/5994493printf0eduMon, 08 Nov 2010 08:19:00 +0800UC故事 2010-11-07 音视频编解码
 
一个关于I帧、P帧及B帧的文章：
http://blog.youkuaiyun.com/really3353/archive/2008/08/08/2785426.aspx
 
从Wikipedia来的文章：（关于I/P/B）
http://en.wikipedia.org/wiki/Video_compression_picture_types
 
 
产品相关问题：]]>https://blog.youkuaiyun.com/printf0edu/article/details/5985125https://blog.youkuaiyun.com/printf0edu/article/details/5985125printf0eduWed, 03 Nov 2010 16:15:00 +0800 
## 一些相关重要背景
 
* SIP
* H323
* RTP
* G711
* Speex
* IMS
 ]]>https://blog.youkuaiyun.com/printf0edu/article/details/5983733https://blog.youkuaiyun.com/printf0edu/article/details/5983733printf0eduWed, 03 Nov 2010 08:07:00 +0800https://blog.youkuaiyun.com/printf0edu/article/details/5978665https://blog.youkuaiyun.com/printf0edu/article/details/5978665printf0eduMon, 01 Nov 2010 08:11:00 +08001. 关于菜单
* 有三种：Options Menu, Contect Menu, Sub Menu
* Options Menu:
Activity::OnOptionsMenuCreated, OnOptionsMenuSelected
事件处理方式：
   OnOptionsMenuSelected
   直接访问Menu Item，绑定Listener.
* Context Menu
   OnX]]>https://blog.youkuaiyun.com/printf0edu/article/details/5977730https://blog.youkuaiyun.com/printf0edu/article/details/5977730printf0eduSun, 31 Oct 2010 16:36:00 +0800https://blog.youkuaiyun.com/printf0edu/article/details/5977183https://blog.youkuaiyun.com/printf0edu/article/details/5977183printf0eduSun, 31 Oct 2010 08:28:00 +0800