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Re: python / gstreamer / camera / xvimagesink issues

Quote:

Originally Posted by abbra (Post 330565)

I wish I had looked at the original post's timestamp :)

Doh! That's twice this month I've done that.

Re: python / gstreamer / camera / xvimagesink issues

It's lardman's fault. He should have posted on my thread not this ancient, crusty thread.

And sorry, daperl, I haven't tested your scripts yet. My brain was refusing to go into "work" mode all weekend. It just wanted to sit around on the couch and drink beer. :(

Re: python / gstreamer / camera / xvimagesink issues

Sorry, I thought this was the thread you were talking about!

Re: python / gstreamer / camera / xvimagesink issues

Quote:

Originally Posted by qole (Post 330817)

It's lardman's fault. He should have posted on my thread...

Quote:

Originally Posted by lardman (Post 330839)

Sorry, I thought this was the thread you were talking about!

Okay, enough of that; I've moved the posts to the proper, non-"crusty" thread. So, now you're all in the right place, but your side discussion about being in the wrong place will confound future readers.

Re: python / gstreamer / camera / xvimagesink issues

Quote:

Originally Posted by sjgadsby (Post 330877)

Like me :)

Re: Fremantle GStreamer

So while we're at it, what are the thoughts on camera focusing?

There are v4l2 hooks there in ad5820.c iirc, and it looks like the camerabin component (or photography interface) can use them.

However as I'm currently writing in Python, that's not so great. There is the v4l2camsrc, which looks like it's linked to the above, but I'm not sure I can do anything with it (as it just appears as a source afaict).

Otherwise I'm considering talking to the ad5820 directly using ioctls, but then I need to work out how to pull in the isp_af functionality, or implement my own (which would be interesting, but ultimately a waste of time).

So, anyone have any bright ideas?

Re: Fremantle GStreamer

lardman: this is output from Fremantle VLC that you might find useful:

Code:

 opening device '/dev/video0'

 V4L2 device: omap3/et8ek8/ad5820/adp1653 using driver: omap3 (version: 0.0.0) on 

 the device has the capabilities: (X) Video Capure, ( ) Audio, ( ) Tuner

 supported I/O methods are: ( ) Read/Write, (X) Streaming, ( ) Asynchronous

 video input 0 (camera) has type: External analog input *

 device supports chroma UYVY [UYVY, packed, UYVY]

     device supports size 2592x1968

     device supports size 1296x984

     device supports size 864x656

     device supports size 640x492

 device supports chroma YUY2 [YUYV (YUV 4:2:2), packed, YUYV]

     device supports size 2592x1968

     device supports size 1296x984

     device supports size 864x656

     device supports size 640x492

 device codec BA10 (Bayer10 (GrR/BGb)) not supported

 '/dev/video0' is a video device

 Extended control API supported by v4l2 driver

 Available control: Brightness (980900)

     integer control

     valid values: 0 to 255 by steps of 1

     default value: 0

     current value: 0

 Available control: Contrast (980901)

     integer control

     valid values: 0 to 255 by steps of 1

     default value: 16

     current value: 16

 Available control: Exposure time [us] (980911)

     integer control

     valid values: 33 to 33132 by steps of 33

     default value: 33132

     current value: 33133

 Available control: Gain [0.1 EV] (980913)

     integer control

     valid values: 0 to 40 by steps of 1

     default value: 0

     current value: 0

 Available control: Color Effects (98091f)

     menu control

         0: None

         1: B&W

         2: Sepia

     default value: 0

     current value: 0

 Available private control: Focus, Absolute (9a090a)

     integer control

     valid values: 0 to 1023 by steps of 1

     default value: 0

     current value: 79

 Available private control: Flash strobe (9a090d)

     button control

 Available private control: Flash timeout [us] (9a090e)

     integer control

     valid values: 1000 to 500000 by steps of 54600

     default value: 500000

     current value: 500000

 Available private control: Flash intensity (9a090f)

     integer control

     valid values: 12 to 19 by steps of 1

     default value: 12

     current value: 12

 Available private control: Torch intensity (9a0910)

     integer control

     valid values: 0 to 1 by steps of 1

     default value: 0

     current value: 0

 Available private control: Indicator intensity (9a0911)

     integer control

     valid values: 0 to 7 by steps of 1

     default value: 0

     current value: 0

 Available private control: Test pattern mode (9a107e)

     menu control

         0: Normal

         1: Vertical colorbar

         2: Horizontal colorbar

         3: Scale

         4: Ramp

         5: Small vertical colorbar

         6: Small horizontal colorbar

         7: Small scale

         8: Small ramp

     default value: 0

     current value: 0

 Available private control: Focus ramping time [us] (9a10af)

     integer control

     valid values: 0 to 3200 by steps of 50

     default value: 0

     current value: 0

 Available private control: Focus ramping mode (9a10b0)

     menu control

         0: Linear ramp

         1: 64/16 ramp

     default value: 0

     current value: 0

Re: Fremantle GStreamer

Good, at least the focus components are available through v4l2 on the device. No auto focus there, but just altering it would be good as a starting point.

Re: Fremantle GStreamer

Hmm, using v4l2camsrc, I get a frame which is 61440 in size.

Now that is 640 x 480 x 2

But the camera is not supposed to return that frame size, and also it seems an odd encoding, either you get a one-to-one YUV, or the U and V data are a 1/4 the size of the Y data, so I'd expect the total frame to be 640 x 480 x 1.5.

Though I guess there are other encodings available (and this seems to be the same one I saw before).

Perhaps it's just the fact it's morning ;)

Indeed just morning. As the encoding is UYVY (or something like that), for every 2 Y pixels we have a total of 4*8 byes = 32bytes. 32/2 = 16bytes total per pixel -> the frame is twice the size of the resolution. Doh!

Re: Fremantle GStreamer

What does the line, "device codec BA10 (Bayer10 (GrR/BGb)) not supported" mean I wonder? What's Bayer10 (GrR/BGb)?