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by timgover
Sat Jan 18, 2014 8:53 pm
Forum: Camera board
Topic: is there a way to get from mmal to opengl texture
Replies: 47
Views: 15008

Re: is there a way to get from mmal to opengl texture

I'm working in autonomous mobile robotics, where the image processing is very important. What i need is that the GPU perform the following task. Get the image, convert the color space to another different from YUV and downsample to lower resolution. Apply some gl shaders (gaussian, dilate, erode, e...
by timgover
Sun Jan 12, 2014 10:23 am
Forum: Camera board
Topic: is there a way to get from mmal to opengl texture
Replies: 47
Views: 15008

Re: is there a way to get from mmal to opengl texture

Sorry, I've been a bit busy over the last month and haven't had time to do any RPI work. However, we found a way of simplifying the Kernel driver support for this so I'll start hacking it next week. My current plan is to implement and release these changes in order. The first is some enhancements to...
by timgover
Mon Dec 02, 2013 5:28 pm
Forum: Camera board
Topic: is there a way to get from mmal to opengl texture
Replies: 47
Views: 15008

Re: is there a way to get from mmal to opengl texture

Yes, I'm working on it at the moment and got first frames out this evening. Should be quite a lot faster than bouncing the buffers via the ARM especially if the only texture required for the shader is the Y texture. Probably another week or two though as the "correct" approach is not 100% clear jus...
by timgover
Thu Nov 28, 2013 11:00 pm
Forum: Camera board
Topic: camera -> egl texture path question
Replies: 13
Views: 7178

Re: camera -> egl texture path question

Thanks Dom !

There's a bit m ore information and some examples here

http://timgover.blogspot.co.uk/2013/11/ ... tures.html
by timgover
Thu Nov 14, 2013 11:17 pm
Forum: Camera board
Topic: is there a way to get from mmal to opengl texture
Replies: 47
Views: 15008

Re: is there a way to get from mmal to opengl texture

If I understand to it correctly you are planing to make fast mapping the Y plane of the MMAL buffer to a texture? It will be definitely better for my purposes. If it is so, I will wait on it. Yes, I'm working on it at the moment and got first frames out this evening. Should be quite a lot faster th...
by timgover
Thu Nov 14, 2013 6:38 pm
Forum: Camera board
Topic: is there a way to get from mmal to opengl texture
Replies: 47
Views: 15008

Re: is there a way to get from mmal to opengl texture

I thought that. I'll try Overclocking. Thanks for help. BTW: I slowed down raspitex_draw function to 15FPS -> now is h264 video again on 30fps. Thanks for posting the update to RaspiVid.c it looks good. As Dom and James say this is quite a tough use-case because the texture convert and GL render re...
by timgover
Sun Nov 10, 2013 10:38 pm
Forum: Camera board
Topic: Firmware upgrade stops cam?
Replies: 27
Views: 17299

Re: Firmware upgrade stops cam?

Please could you post the raspistill command line and the output of "sudo vcdbg log msg" after the failure ?
by timgover
Sun Nov 10, 2013 6:18 pm
Forum: Camera board
Topic: is there a way to get from mmal to opengl texture
Replies: 47
Views: 15008

Re: is there a way to get from mmal to opengl texture

Thanks Dom ! btw: In-case anyone's wondering there's a couple more changes in the pipeline. First, a simple tweak that allows the GL frame-buffer to be saved as the still in RaspiStill. Second, a fast-path for mapping the Y plane of the MMAL buffer to a texture as GL_LUMINANCE which should be useful...

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