On 2011-11-08 05:30, Javier Martinez Canillas wrote:
On Tue, Nov 8, 2011 at 1:20 PM, Gary Thomas<gary@xxxxxxxxxxxx> wrote:
On 2011-11-04 04:37, Laurent Pinchart wrote:
Hi Gary,
On Tuesday 01 November 2011 19:52:49 Gary Thomas wrote:
I'm trying to use the MT9P031 digital sensor with the Media Controller
Framework. media-ctl tells me that the sensor is set to capture using
SGRBG12 2592x1944
Questions:
* What pixel format in ffmpeg does this correspond to?
I don't know if ffmpeg supports Bayer formats. The corresponding fourcc in
V4L2 is BA12.
ffmpeg doesn't seem to support these formats
If your sensor is hooked up to the OMAP3 ISP, you can then configure the
pipeline to include the preview engine and the resizer, and capture YUV
data
at the resizer output.
I am using the OMAP3 ISP, but it's a bit unclear to me how to set up the
pipeline
Hi Gary,
I'm also using another sensor mtv9034 with OMAP3 ISP, so maybe I can help you.
using media-ctl (I looked for documentation on this tool, but came up dry -
is there any?)
Do you have an example of how to configure this using the OMAP3 ISP?
This is how I configure the pipeline to connect the CCDC with the
Previewer and Resizer:
./media-ctl -l '"mt9v032 3-005c":0->"OMAP3 ISP CCDC":0[1]'
./media-ctl -l '"OMAP3 ISP CCDC":2->"OMAP3 ISP preview":0[1]'
./media-ctl -l '"OMAP3 ISP preview":1->"OMAP3 ISP resizer":0[1]'
./media-ctl -l '"OMAP3 ISP resizer":1->"OMAP3 ISP resizer output":0[1]'
./media-ctl -f '"mt9v032 3-005c":0[SGRBG10 752x480]'
./media-ctl -f '"OMAP3 ISP CCDC":0 [SGRBG10 752x480]'
./media-ctl -f '"OMAP3 ISP CCDC":1 [SGRBG10 752x480]'
./media-ctl -f '"OMAP3 ISP preview":0 [SGRBG10 752x479]'
./media-ctl -f '"OMAP3 ISP resizer":0 [YUYV 734x471]'
./media-ctl -f '"OMAP3 ISP resizer":1 [YUYV 640x480]'
Hope it helps,
Thanks, I'll give this a try.
I assume that your sensor is probably larger than 752x480 (the mt9p031
is 2592x1944 raw) and that setting the smaller frame size enables some
scaling and/or cropping in the driver?
--
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Gary Thomas | Consulting for the
MLB Associates | Embedded world
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