On 31/05/2021 18:55, Fabio Estevam wrote:
Hi, On an imx6dl based board with an ADV7280, I can successfully capture from an analog camera using the following Gstreamer pipeline: gst-launch-1.0 v4l2src device=/dev/video2 ! kmssink The next goal is to integrate it within the Qt multimedia application: https://github.com/qt/qtmultimedia/blob/5.15.2/src/gsttools/qgstutils.cpp#L631-L687 The Qt app uses the VIDIOC_ENUMINPUT and VIDIOC_S_INPUT ioctl's, but as these are not implemented by the imx-media-capture driver yet, it causes the camera to not be detected.
Seems to me (naively, without looking into it in depth) that the v4l2 framework default should be to enumerate a single input, return that input with g_input and succeed in setting that input with s_input.
Maybe there's a reason why it doesn't? Regards, Ian
Does anyone have any suggestions as to how to add support for .vidioc_enum_input, .vidioc_g_input and .vidioc_s_input in drivers/staging/media/imx/imx-media-capture.c ? I tried to look at how the other drivers implement these hooks, but my attempts to add support for them to the imx capture driver didn't work. Thanks, Fabio Estevam
