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Being one of the most eye-catching terms today, android has many creative features. The most revolutionary one, in my opinion, is process agnostic. This is not a term used in official document, but I prefer to to use it since it implies this feature

I came across some questions about how to evaluate the memory usage of a process. It seems to be an easy task since most operating systems have provided a set of powerful tools to investigate memory usage. But what confuses the users is the power

A perplexity developers usually meet is they release the product to qa team and get a feedback of occasional crash. And the testers don't have a solid reproduction steps. In this case, it's a time-consuming task to find out the cause and fix it.

Many guys have used make utility with makefile to compile source code. The official introduction of gnu make also introduces it as "Make is a tool which controls the generation of executables and other non-source files of a program from the

1. View graph When we render a media file, directshow uses intelligent connect to build a working graph for us. It may add some filters implicitly if necessary. From my perspective, it all happens transparently. It's user friendly and powerful. But

I've used freecommander for years. It greatly improves my efficiency. Unfortunately, for some unkonwn reasons, my freecommander configuration file get corrupted after my machine power down unexpectedly several days before. Rather than making these

I learned from Tomas's post that newer version windbg can't be downloaded from microsoft directly anymore. To get newer windbg, we have to download the huge 620 mb WDK iso and extract windbg installer from it manually. The newest windbg standalone

Question:Write an O(n)-time nonrecursive procedure that, given an n-node binary tree, prints out the key of each node in the tree. Use a stack as an auxiliary data structure. Answer:This isn't a difficult question. But the skill of turning a

As I posted before, logging is an important debugging means. In order to be truly useful and convenient, the logging module should at lease have two traits:can be turned on and off globallysupports the concept of logging levelosip also comes with a

In sip protocol, the difficult thing is the liecycle of sip elements, including dialog, transaction and message. Though defined as different layers in sip, their lifecycle usually overlaps. Message is the layer at the bottom. Transaction is the

What is SIPSIP Protocol is one of widely used signaling protocol, with the main purpose of, as its name is abbreviated for, initialization session between several participants. Due to its nature, it's mainly used in VOIP, IM applications.Basics of

dynamic_cast is a run-time type conversion operator and it ensures only valid conversion can success. The expression dynamic_cast(src) converts expression src to dest_type if appropriate, fails otherwise. Unlike static_cast, it performs type

As an IT guy, there are times we need to make technical presentation. How to do it well? I'm no expert in presentation at all, but I'd like to share my two cents through my experience.Face your audienceIt's extremely important to face your audience

After we release a product to market, it's not uncommon that our customer report bugs to us, even we gained a lot of confidence from "thorough" tests by ourselves and QA guys. If it occurs, we usually don't have the luxury to perform debugging in

We know that compiler will expand macros before it actually compiles the code. Sometimes it's useful if we can view the result of the expansion, especially when we use macro to implement some functions. Here is how:Microsoft C++ compiler:

In visual studio, we can add trace point while debugging. It's a helpful feature to analyze the behavior of a program without breaking the execution of the target process. Isn't it useful if you debug a multi-thread process?At first glance, it seems

In this post, I'll summarize some features that make directshow stand out, from a developer's point of view.The architecture of directshow is:The core of directshow framework is the box in the center.1. separation of concernsDirectshow divides a

I need to change a visual stuio 2003 project's source control system from visual sourcesafe to subversion. In order to commit clean source files to svn, I first need to completely remove vss binding from the project. There are a lot of articles

A common task we may want to achieve while creating a media application is to start media playback on a new thread, as the sample below

The adb tool in android sdk is convenient utility for debugging and control android emulators. One of its powerful features is it can forward a tcp port on local machine to an emulator running on the same machine.After you run the adb forward