i.MX ProcessorsのトピックRe: getting error on ioctl_enum_fmt_cap

getting error on ioctl_enum_fmt_cap

shlomiperlman — Sun, 21 Feb 2016 10:11:13 GMT

HI,

It seems something is preventing getting the "v4l2_fmtdesc" data in my sensor driver:

static int ioctl_enum_fmt_cap(struct v4l2_int_device *s,

struct v4l2_fmtdesc *fmt)

{

if (fmt->index > SOME_MAX_VALUE (usually 8)) {

return -EINVAL;

...

}

every time im trying to init the camera app and this struct is being checked for "fmt->index"

im getting an error value.

where is this function being called from and how do i fix it?

thanks,

Bio_TICFSL — Tue, 23 Feb 2016 16:40:19 GMT

Hi shlomi,

Check your video format input, v4l2 support RGB 16, 24, and 32-bit, YUV 4:2:0 and 4:2:2 planar, and YUV 4:2:2 interleaved

input formats.

If you're using i.MX6, you can use this code to test CSC.

It will read 4 files from different color formats and transform to RGB565 to be shown on lcd.

Hope this helps

shlomiperlman — Thu, 25 Feb 2016 12:27:45 GMT

HI,

thanks, im able to get images with gstreamer without getting this error though all of my images turn out blurry and are in

purple/yellow when using RGB565.

if i use YUV in any of its formats all i get is a purple screen.

do you have any suggestions?

it maybe related to the camera register settings but i wouldn’t even know where to begin changing those values..