Hi Laurent, Sorry to insist on this, but for you it's probably peanuts to see a possible error. Any hints/workarounds are welcome... >From the mail with subject AW: AW: mt9p031 shows purple coloured capture Florian Neuhaus wrote on 2013-06-24: >> Have you tested the unmodified omap3-is-live ? > I did today and indeed, with the unmodified app there is no green taint on > the first start. I have now tracked down the issue to my implemented > rotation on the video-out: > diff --git a/videoout.c b/videoout.c index 51bed8b..6fd8a16 100644 --- a/videoout.c +++ b/videoout.c @@ -60,6 +60,7 @@ struct videoout *vo_init(const char *devname, struct v4l2_format fmt; struct videoout *vo; int ret; + int rotation = 90; /* rotate for testing purposes */ /* Allocate the video output object. */ vo = malloc(sizeof *vo); @@ -76,6 +77,14 @@ struct videoout *vo_init(const char *devname, goto error; } + /* setup the rotation here, we have to do it BEFORE + * setting the format. */ + ret = v4l2_set_control(vo->dev, V4L2_CID_ROTATE, &rotation); + if (ret < 0){ + perror("Failed to setup rotation\n"); + goto error; + } + pixfmt.pixelformat = format->pixelformat; pixfmt.width = format->width; pixfmt.height = format->height; It would be very nice if you could test the above patch with one of your omap-devices. > I do a rotation by 90 or 270 degrees. So there seems to be an issue with the > vrfb-rotation in omap_vout? > I am already rotating the omapfb - is this a problem? > omapfb.rotate=1 omapfb.vrfb=y > Another possibility to rotate the captured stream? I noticed, that it happens only with 90 or 270 degree rotation and not with 0 and 180 degree. Also only on the first start of the stream. All following streamings are correct. I have a 480x800 Portrait display. I try to rotate the output to 800x480 landscape. Regards, Florian -- 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