Structure the sources so that the compression and decompression code
form a library usable by any program, and write both gzip and zip on
top of this library. This would ideally be a reentrant (thread safe)
library, but this would degrade performance. In the meantime, you can
look at the sample program zread.c.
This library provides functionality to control any camera that conforms to the
1394-Based Digital Camera Specification (which can be found at
http://www.1394ta.org/Download/Technology/Specifications/Camera120.pdf). It
utilizes the lowlevel functionality provided by libraw1394 to communicate with
the camera.
按照官方的說法：Cairo is a vector graphics library with cross-device output support.
翻譯過來，就是cairo是一個支持多種輸出的向量圖形庫。
具體解釋一下，也就是說，cairo是種畫圖的工具庫，他可以向多種設備上畫圖，比如：
cairo可以輸出到png,可以輸出到pdf，可以輸出到ps，可以輸出到xlib，可以輸出到XCB，可以輸出到win32，以后還要輸出到svg
我們可以展望一下，如果cairo能夠統一linux下所有的畫圖接口，那么，所見所得可能就會成為顯示。
