Hi all,
I'm playing with i.mx27 processor by Freescale, namely with ipcam
reference design. There is unfortunately no support available for this hw
this time so I have adapted a kernel from Pengutronix Oselas distribution
(available here
ftp://ftp.phytec.de/pub/Products/phyCORE-iMX27/Linux/PD11.1.0/).
There is mt9d131 CMOS imager from Aptina on the board with 1600x1200
resolution. As there was none driver, I adapted the one for mt9m111 one
for my chip. Unfortunately I'm able to get image with any resolution only
up to 800x600, with higher resolution resulting image is fragmented - it
looks like the both synchronization (vertical, horizontal) fails. I was
not able to solve it yet, I'm only sure that I wrote correct values to
WINDOW_WIDHT and WINDOW_HEIGHT registers, also no skipping is set up.
I use following command to capture single image:
gst-launch \
v4l2src num-buffers=1 device=/dev/video1 ! \
video/x-raw-yuv,format=\(fourcc\)UYVY,width=$WIDTH,height=$HEIGHT ! \
ffmpegcolorspace ! \
video/x-raw-yuv,width=$WIDTH,height=$HEIGHT ! \
jpegenc ! \
filesink location=col_image.jpg
My second problem concerns streaming via udp. I'm able to stream mpeg4
using hardware VPU on the chip using following gstreamer command
gst-launch -v \
v4l2src device=/dev/video1 ! \
video/x-raw-yuv,format=\(fourcc\)UYVY,width=$WIDTH,height=$HEIGHT,
framerate='(fraction)'10/1 ! \
ffmpegcolorspace ! \
mfw_vpuencoder codec-type=std_mpeg4 bitrate=16383 gopsize=20
profile=true ! \
rtpmp4vpay send-config=TRUE ! \
udpsink host=192.168.10.1 port=5434
However, there is also an issue with resolution. This works up to 640x480.
For example for 800x600 i'm getting this error message
WARNING: erroneous pipeline: could not link ffmpegcsp0 to mfwgstvpu_enc0
Could please anyone give me an advice how to solve described problems?
with best regards
Jan
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