imx6 lib ipu

[christophe]

Hi,

Lib ipu that was available with im53 doesn't seem to be runable on imx6 in L3.0.35, as it is said in 2012:   Re: Is the ipu-lib able to work on iMX6Q?

I wonder if it's really or always the case since you can find ipu lib files in imx-lib package. And functions mxc_ipu_lib_task_init(), mxc_ipu_lib_task_buf_update(),... are present in libipu.so.

Or is it simply not supported by Freescale, but can still work ?

Rgds,

Christophe

[christophe]

Secondary question: looking in ipu.h file, IPU commands are now restricted to 4 instead of 42. Is it still possible to manipulate IPU as before on imx53 ?

[rogerio_silva · Accepted solution]

Hi Christophe,

IPUlib is not available on i.MX6. You can use /dev/mxc_ipu to make all operations that was previously made using ipulib on i.MX53.

You can check for some examples on unit tests (located at your rootfs/unit_tests) and on this link:

https://github.com/rogeriorps/ipu-examples     (check the examples inside mx6 folder).

Rgds

Rogerio

[john_ortega]

hello. based from the ipu-examples for imx6, it accessed the device node for the framebuffer (/dev/fb0). but in our custom board i can't see the fb device node. only the fb device attributes located at:  /sys/devices/platform/mxc_sdc_fb.0/ folder. does path of fb device node varies on different platforms? btw, our board is using r13.4.1 freescale bsp.

[rogerio_silva]

Hi John,

No, the framebuffer doesn't change the node address (even on pc it's located at the same folder). Maybe you should have some problem when registering the framebuffer device driver on your platform. You can try to check if some error appears on dmesg log.

Best Regards,

Rogerio

[john_ortega]

hi rogerio,

I see. since ipu lib is not accessible on imx6 platform, is there a way to rotate a video recorded by ov5640_mipi camera sensor on the android camera hal or Linux driver layer? Appreciate if you can advice.

many thanks,

john

[rogerio_silva]

Hi John,

You can check the unit test mxc_v4l2_overlay.out. If you add -r <rotation mode> the video will rotate according to the mode:

root@freescale /unit_tests$ ./mxc_v4l2_overlay.out -r 4

Rgds

Rogerio

[christophe]

Thank you Rogiero. That's clear.

Rgds,

Christophe.