Le dimanche 06 décembre 2015 à 00:00 +0200, Ran Shalit a écrit : > Hello, > > I would like to ask a general question regarding methods to debug a > v4l2 device driver. > Since I assume that the kernel driver will probably won't work in > first try after coding everything inside the device driver... > > 1. Do you think qemu/kgdb debugger is a good method for the device > driver debugging , or is it plain printing ? > > 2. Is there a simple way to display the image of a YUV-like buffer in > memory ? Most Linux distribution ships GStreamer. You can with GStreamer read and display a raw YUV images (you need to know the specific format) using videoparse element. gst-launch-1.0 filesrc location=my.yuv ! videoparse format=yuy2 width=320 height=240 ! imagefreeze ! videoconvert ! autovideosink You could also encode and store to various formats, replacing the imagefreeze ... section with an encoder and a filesink. Note that videoparse unfortunatly does not allow passing strides array or offsets. So it will work only if you set the width/height to padded width/height. regards, Nicolas
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