topic Re: i.mx6 rotate screen 180 in i.MX Processors

i.mx6 rotate screen 180

preb — Fri, 16 Aug 2013 10:08:59 GMT

Hello,

Do some have some hints on how to rotate the screen 180 degress on i.mx6 ?

I use DirectFB.

I did find this in the linux source code:

* Enumeration of IPU rotation modes

enum ipu_rotate_mode {

/* Note the enum values correspond to BAM value */

IPU_ROTATE_NONE = 0,

IPU_ROTATE_VERT_FLIP = 1,

IPU_ROTATE_HORIZ_FLIP = 2,

IPU_ROTATE_180 = 3,

IPU_ROTATE_90_RIGHT = 4,

IPU_ROTATE_90_RIGHT_VFLIP = 5,

IPU_ROTATE_90_RIGHT_HFLIP = 6,

IPU_ROTATE_90_LEFT = 7,

};

I want to able to rotate the screen in one of these:

1. arch/arm/mach-mx6/*

2. Some scripts when the system have booted.
Example: echo '1' > /sys/class/graphics/fb0/rotate

I think this is IPU_ROTATE_HORIZ_FLIP, but I am not able to get the function IPU_ROTATE_180

3. Parameter to DirectFB. Example: df_andi -dfb:layer-rotate=180

Does not work.

I did find this example:

Have not tested, but should there not be a simpler way?

LeonardoSandova — Fri, 16 Aug 2013 14:51:39 GMT

You can use the mfw_v4lsink/mfw_isink gstreamer elements to rotate. Would that help?

Leo

bjørnarsyversta — Tue, 20 Aug 2013 09:00:31 GMT

We are not going to have gstreamer on the system.

LeonardoSandova — Tue, 20 Aug 2013 15:21:35 GMT

I am not IPU expert, but you may find what you need on this code https://github.com/rogeriorps/ipu-examples

Leo

bjørnarsyversta — Fri, 06 Sep 2013 14:16:04 GMT

For DirectFB the parameter --dfb:layer-rotate=180 can be used.

Note the type error with only one - over, that was the bug...