Hi, all
I am using OMAP3530 EVM. I want to grab the screnn, just like snapshot or print screen on Windos, and then encode it. From the PSP User Guide, I found that DSS of omap3530 have three pipelines, one is graphic pipeline fof GUI, and the other two are video pipeline. What I really want is all the data displayed on LCD, but it seemed that there is no access to get the data output by other applications wiht v4l2 pipeline.
So, I want to know:
1.Can I get each pixel value displayed on LCD, which may be output by other application though fb or vdieo , especially though vidoe pipeline(V4L2)???
2.Now, I just can get the data in graphic pipeline though framebuffer mmap. But memcpy is so slow, and I have to convert RGB565 to UYVY to give it to DSP to encode.
I just grab screen(640x480) 5 fps. I is too slow, so HOW CAN I GRAB FRAMEBUFFER QUICKLY, AND CONVERT RGB565 TO UYVY QUICKLY?
