yavta

Yet Another V4L2 Test Application

make

FSR172X

width=2048
height=128
size=${width}x${height}
frames=8
skip=0
yavta -c$frames -p -F --skip $skip -f SGRBG12 -s $size $(./media-ctl -e 'OMAP3 ISP CCDC output')

Cross-Compiling

export ARCH=arm
export CROSS_COMPILE=${HOME}/overo-oe/tmp/sysroots/i686-linux/usr/armv7a/bin/arm-angstrom-linux-gnueabi-
make

Usage

-c, --capture[=nframes]   Capture frames
-d, --delay     Delay (in ms) before requeuing buffers
-f, --format format   Set the video format
-F, --file[=prefix]   Read/write frames from/to disk
-h, --help      Show this help screen
-i, --input input   Select the video input
-l, --list-controls   List available controls
-n, --nbufs n     Set the number of video buffers
-p, --pause     Pause before starting the video stream
-q, --quality n     MJPEG quality (0-100)
-r, --get-control ctrl    Get control 'ctrl'
-s, --size WxH      Set the frame size
-t, --time-per-frame num/denom  Set the time per frame (eg. 1/25 = 25 fps)
-u, --userptr     Use the user pointers streaming method
-w, --set-control 'ctrl value'  Set control 'ctrl' to 'value'
    --enum-formats    Enumerate formats
    --enum-inputs   Enumerate inputs
    --no-query      Don't query capabilities on open
    --offset      User pointer buffer offset from page start
    --requeue-last    Requeue the last buffers before streamoff
    --skip n      Skip the first n frames
    --sleep-forever   Sleep forever after configuring the device