They have been use by two different constituents of the VSAM project since SPU-Toolbox 's inception in the summer of 1999. In the spirit of open source, so that it may be improved, and in the hope that it would reach a larger audience, SPU-Toolbox was released to the public under the GPL in August of 2000. XIH The heart and soul of SPU-Toolbox is XIH, the class that gets images onto the screen as fast as possible. Where available, XIH will take advantage of the MIT-SHM and DBE X extensions. The other key component in SPU-Toolbox is video capture.
Polled mode waits for an application to explicitly request a frame.
Both modes are threaded and pipelines, so that frames can be continuously prepared for capture or use in user applications. Current support is for V4L compatible cards. Future plans include wider support for other capture devices, including V4L2 and Matrox devices. These libraries are not required, and may be explicitly enabled or disabled. Of course, we are always in the need of testing, documentation, and quality assurance feedback.