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Re: [pygame] camera module: yuv, hsb, controllers and poc game


Have you looked at http://pygame.org/wiki/MacCompile yet.
You just have to pull the latest version of github, than just run python configure.py followed by python setup.py install.

OpenCV is not needed...


On 6-aug-09, at 23:22, Alexandre Quessy wrote:

Hello !
Where can I find the installation instructions for Mac OS X?
So far, my application doesn't detect any camera, though a friend had
it successfully working on his computer. Is OpenCV still needed ? Is
it supposed to work under OSX 10.4 or does it require 10.5?
Thanks !


2009/8/6 René Dudfield <renesd@xxxxxxxxx>:

nice work!

Also check out the apple performance profiling tools*. They should let you see which objc functions are slow, where as the cprofile module just works
for python exposed functions.

You probably need to add -pg to the gcc flags so it adds profile information
when it compiles.


* http://developer.apple.com/tools/sharkoptimize.html

On Wed, Aug 5, 2009 at 1:24 PM, el lauwer <el.lauwer@xxxxxxxxx> wrote:


Since, GSOX is drawing into a close I though I post an other update on my

First of all, I have added support for yuv and hsb color output with
different color depths by using the color transform functions.

I have looked into the flip controller, and the only function I could find
in the Quicktime API that should be able to do this is
SGSetChannelMatrix(channel, matrix) [0]. However when I try to set an mirror matrix (a scale + translate matrix) it return an error that indicates that
the transformation matrix isn't supported.
Here is the code sniped:

MatrixRecord matrix;
Fixed minusOne = Long2Fix(-1L);
Fixed PlusOne = Long2Fix(1L);
Fixed zero = Long2Fix(0L);

ScaleMatrix(matrix, fixed1, minusOne, 0, 0);
TranslateMatrix(matrix, Long2Fix(self->boundsRect.right), 0);
SGSetChannelMatrix(self->channel, &matrix);

You can find more context in the file src/camera_mac.m:133

Nirav, since you joined Apple, maybe you can ask the good people in
Cupertino, how they intended this to be done :P

In case there is no way that qt support this controller, should I just
keep them out and use transform.flip instead?

I have been testing the camera games by nirav (bouncy bal, pointillism, reflectionrejection), pointillism runs very slow, about 2,5 frames a second, and the other don't display an image frame. I haven't found the problem yet.

http://developer.apple.com/documentation/QuickTime/Reference/QTRef_SequenceGrabber/Reference/reference.html#/ /apple_ref/c/func/SGSetChannelMatrix


Alexandre Quessy