i.MX6Q IPU_ROTATE_HORIZ_FLIP can't work

[haesungjung]

Dear,

I'm using L4.1.15 + i.MX6Q and Direct FB

I want to use IPU_ROTATE_HORIZ_FLIP for rotation display.

but I found below comment in community.

'for IPU display channel, it can only support IPU_ROTATE_VERT_FLIP(vertical filp), for other kind of rotation, the customer should use IPU task to implement it.'

If really need to implement it, can you provide a reference source code or document?

[joanxie · Accepted solution]

one can refer to the source code as below, and change the rotation parameter as below. then you can work for any rotation,

GitHub - jerome-pouiller/mxc-video-rotate 

the values are:

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

Example: "video=mxcfb0:dev=ldb,rotate=4 " for a 90 deg rotation