Hi Peter, On Tuesday 11 February 2014 15:54:00 Peter Meerwald wrote: > Hello Laurent, > > some quick question about the OMAP3 ISP pipeline capabilities: > > (1) can the OMAP3 ISP CCDC output concurrently to memory AND the resizer > in YUV mode? I think the answer is no due to hardware limitation Based on the TRM I would say that the hardware is capable of doing so, but this isn't implemented in the driver. > (2) in RAW mode, I think it should be possible to connect pad 1 of the > OMAP3 ISP CCDC to CCDC output and pad 2 to the ISP preview and > subsequently to the resizer? so two stream can be read concurrently from > video2 and video6? That's my understanding as well, but once again this isn't supported by the driver. > (3) it should be possible to use the ISP resizer input / output > (memory-to-memory) independently; it there any example code doing this? I haven't written any sample code as such for memory-to-memory operation. I usually use the following media-ctl and yavta commands to test memory-to- memory resizing : -------------------------------- media-ctl -r media-ctl -l '"OMAP3 ISP resizer input":0->"OMAP3 ISP resizer":0[1]' media-ctl -l '"OMAP3 ISP resizer":1->"OMAP3 ISP resizer output":0[1]' media-ctl -V '"OMAP3 ISP resizer":0[YUYV 2048x1536]' media-ctl -V '"OMAP3 ISP resizer":1[YUYV 1024x768]' yavta -f YUYV -s 2048x1536 -n 4 --capture=100 \ `media-ctl -e "OMAP3 ISP resizer input"` > resizer-input.log 2>&1 & yavta -f YUYV -s 1024x768 -n 4 --capture=100 \ `./media-ctl -e "OMAP3 ISP resizer output"` > resizer-output.log 2>&1 & -------------------------------- You can also have a look at the omap3-isp-live application available at http://git.ideasonboard.org/omap3-isp-live.git It contains a library that offers viewfinder, snapshot and scaling functions on top of the ISP and two sample applications that use the library. The resizer memory-to-memory is used by the live application to scale captured snapshots when displaying them on screen. -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
