LiquidThought

pxCamera

support@liquidthought.com (LiquidThought) — Sun, 17 Feb 2008 17:43:00 +0000

pxCamera is a simple video camera capture class that layers on top of pxCore, our portable opensource framebuffer library. The design of pxCamera makes it well suited to do a variety of fun and interesting things with captured video frames - like computer vision or image processing applications.

The design of the pxCamera API followed a few principles as follows:

*Be Simple – Allows for enumeration of available capture devices and the ability to initiate capturing frames from a given camera into a pxBuffer(framebuffer).
*No UI Policy – Simple capture into a framebuffer. No UI is assumed.
*Support multiple capture sources simultaneously. [I’ve tested with two webcams] pxCamera should support any DirectShow compatible video source.
*Portable API – The API is portable even though the implementation is currently only for Windows.

Google Code Project Page
http://code.google.com/p/pxcamera

pxCore 1.2

support@liquidthought.com (LiquidThought) — Sat, 16 Feb 2008 21:09:00 +0000

We've made some minor additions to our portable open source framebuffer library, pxCore. Most of these additionals were added to support a video capture library that we'll be posting in the near future. Some of the changes to pxCore include:

* Added the ability to directly blit pxBuffer frame buffer descriptors.
* Added beginNativeDrawing and endNativeDrawing to allow native drawing outside of the paint loop.
* Added an example that demonstrates using platform native drawing methods in conjunction with the portable frame buffer primitives in pxCore.

Google Code Project Page
http://code.google.com/p/pxcore

Johnny Lee Rocks

support@liquidthought.com (LiquidThought) — Tue, 29 Jan 2008 05:50:00 +0000

Here is another vid from Johnny Lee - Wii hacker extraordinaire. In this one he turns a wiimote into a multitouch display.

Some more projects

pxCore

support@liquidthought.com (LiquidThought) — Wed, 23 Jan 2008 05:22:00 +0000

pxCore is a small opensource library that provides a portable framebuffer and windowing abstraction for C++. This library is intended to hide the complexity of writing rasterization code on multiple platforms and allows you to easily write the following sorts of things in a portable way.

2d and 3d rasterizers
Transition Libraries
Filter Routines
Image Processing

In its design a few principles were followed:

Be Small – A simple windowed application can be built (on Windows) in as little as 8k.
Be Simple – The framebuffer abstraction supports 32bpp framebuffers and is intended to be minimal yet complete.
Don’t tightly couple the framebuffer and windowing functionality.- Some other framebuffer libraries (PixelToaster for one) don’t separate out the framebuffer abstraction from the windowing abstraction. By loosely coupling the two abstractions this library becomes much more valuable; as the framebuffer functionality can be used and integrated with other windowing toolkits easily thereby making YOUR code more reusable.
Platform native surface construction
Policy free resizing support – No policy is baked into the window resizing support so that applications completely control their own resizing behavior.
Portable Keyboard, Mouse and Window events
Support for portable performance timers
Basic Animation Support – Support for a basic animation timer event (frames per second) is built into the windowing abstraction making it easy to write applications that animate their contents.

pxCore has been ported to Windows, pocketpc (arm4), linux(x11), OSX.

Google Code Project Page
http://code.google.com/p/pxcore/