摘要：
按照Android的文档，需要添加这样的udev规则：SUBSYSTEM=="usb", ATTR{idVendor}=="0bb4", MODE="0666", GROUP="plugdev"不过需要注意的时候，在发现adb无法发现Android设备的时候，请注意idVendor字符串是否是填成小写的。如之前调试Sharp的设备，Sharp的vendor ID是04DD，但是如果写成04DD就无法连接上，必须要写成04dd就OK了。本来Linux是区分大小写的，只不过Android网站上这个vendor ID是大 阅读全文
摘要：
在MPEG-4 14496-2中，没有simple profile level 0的定义，最小的是simple profile level 1，那么simple profile level 0是什么？如下：I have heard of a Level 0 for Simple Profile, what is it? Level 0 of the simple profile was designed to target to the wireless industry where screen sizes are small, and processing power is ... 阅读全文
摘要：
MPEG-4 Part 2, MPEG-4 Visual (formally ISO/IEC 14496-2[1]) is a video compression technology developed by MPEG. It belongs to the MPEG-4 ISO/IEC standards. It is a discrete cosine transform compression standard, similar to previous standards such as MPEG-1 and MPEG-2. Several popular codecs includin 阅读全文