Linux/AM5708: Getting black & white image for RGB565 format from OV5640 camera with AM5708

Hi,

Thanks for the recommendation.

However I'm getting similar output from yavta which I was getting from gstreamer pipeline.

Here are the details of my problem,

I'm selecting RGB565_LE mode from my driver.

The commands I'm using to dump a video and it's output,

root@board:~# yavta --enum-formats /dev/video0
Device /dev/video0 opened.[  693.224071] ## v4l_fill_fmtdesc: pixelformat = 1346520914 ##

Device `cal' on `platform:cal-000' is a video output (without [  693.232028] ## In RGB565
mplanes) device.
- Available formats:
        Format 0: RGB565 (50424752)
        Type: Video capture (1)
        Name: 16-bit RGB 5-6-5
        Frame size: 176x144 (1/15, 1/30)
        Frame size: 320x240 (1/15, 1/30)
        Frame size: 640x480 (1/15, 1/30)
        Frame size: 720x480 (1/15, 1/30)
        Frame size: 720x576 (1/15, 1/30)
        Frame size: 1024x768 (1/15, 1/30)
        Frame size: 1280x720 (1/15, 1/30)
        Frame size: 1920x1080 (1/15, 1/30)
        Frame size: 2592x1944 (1/15, 1/30)

Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200

root@board:~# yavta -c10 -fRGB565 -F/mnt/data/Y_RGB565_2.rgb -s1280x720 /dev/video0                                                                                                                   
Device /dev/video0 opened.
Device `cal' on `platform:cal-000' is a video output (without mplanes) device.
Video format set: RGB565 (50424752) 1280x720 ([   71.547029] ## v4l_streamon ##
stride 2560) field none buffer size 1843200
Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
8 buffers requested.
length: 1843200 offset: 0 timestamp type/source: mono/EoF
Buffer 0/0 mapped at address 0xb6c56000.
length: 1843200 offset: 1843200 timestamp type/source: mono/EoF
Buffer 1/0 mapped at address 0xb6a94000.
length: 1843200 offset: 3686400 timestamp type/source: mono/EoF
Buffer 2/0 mapped at address 0xb68d2000.
length: 1843200 offset: 5529600 timestamp type/source: mono/EoF
Buffer 3/0 mapped at address 0xb6710000.
length: 1843200 offset: 7372800 timestamp type/source: mono/EoF
Buffer 4/0 mapped at address 0xb654e000.
length: 1843200 offset: 9216000 timestamp type/source: mono/EoF
Buffer 5/0 mapped at address 0xb638c000.
length: 1843200 offset: 11059200 timestamp type/source: mono/EoF
Buffer 6/0 mapped at address 0xb61ca000.
length: 1843200 offset: 12902400 timestamp type/source: mono/EoF
Buffer 7/0 mapped at address 0xb6008000.
0 (0) [-] none 0 1843200 B 71.913254 71.913279 18.795 fps ts mono/EoF
1 (1) [-] none 1 1843200 B 71.946588 71.990857 29.999 fps ts mono/EoF
2 (2) [-] none 2 1843200 B 71.979923 72.068179 29.999 fps ts mono/EoF
3 (3) [-] none 3 1843200 B 72.013259 72.145686 29.998 fps ts mono/EoF
4 (4) [-] none 4 1843200 B 72.046594 72.223280 29.999 fps ts mono/EoF
5 (5) [-] none 5 1843200 B 72.079927 72.300632 30.000 fps ts mono/EoF
6 (6) [-] none 6 1843200 B 72.113263 72.379549 29.998 fps ts mono/EoF
7 (7) [-] none 7 1843200 B 72.146596 72.457329 30.000 fps ts mono/EoF
8 (0) [-] none 8 1843200 B 72.179932 72.534793 29.998 fps ts mono/EoF
9 (1) [-] none 9 1843200 B 72.279936 72.612212 10.000 fps ts mono/EoF
Captured 10 frames in 0.752163 seconds (13.294990 fps, 24505326.018960 B/s).
8 buffers released.

Then, when I play this video on local PC with ffplay, I'm getting following ouput.

ffplay -v info -f rawvideo -pixel_format rgb565le -video_size 1280x720 Y_RGB565_2.rgb,

And,

ffplay -v info -f rawvideo -pixel_format bayer_rggb16le -video_size 1280x720 Y_RGB565_2.rgb,

Playing with rgb565le format in ffplay, I'm not getting proper image.

Playing with bayer_rggb16le format in ffplay, I'm getting the image but it's black & white.

Can you tell me what could be the problem?

Thanks,

Gunjal

Here's the UYVY image to compare with,

Hello,

Thank you for sharing the pictures.
Let me confirm that the cal driver could capture in MEDIA_BUS_FMT_RGB565_2X8_LE but it seems it can(refer cal.c file).
On other hand I have checked ov5640.c (in PSDK 5.02, linux version 4.14.79+) and it seems it could capture in sensor->fmt.code = MEDIA_BUS_FMT_UYVY8_2X8 only.

BR
Margarita

Yes, by default in ov5640.c driver configures as,

sensor->fmt.code = MEDIA_BUS_FMT_UYVY8_2X8

But, I changed in driver to MEDIA_BUS_FMT_RGB565_2X8_LE to test in RGB mode as it is given in ov5640 datasheet that it supports RGB565 and RGB555 modes.

Thank you, it did help.
I'm getting proper images in RGB565 format as well now.

Regards,
gunjal