500d development - page 117 - DSLR Hack development - CHDK Forum

500d development

  • 2487 Replies
  • 649359 Views
*

Offline Coutts

  • *****
  • 538
  • www.flickr.com/couttsphotog
    • Flickr
Re: 500d development
« Reply #1160 on: 19 / May / 2011, 14:53:21 »
Advertisements
so today i've been writing down everything and getting all of the buffers straightened out. made an interesting observation :)

6 new addresses, only present while recording (not in video mode idle), and 2 unique addresses in each recording mode.

i think i might have stumbled on the video buffer :)
Canon 5d
Canon 50mm f/1.8
Sigma 24mm f/1.8

Flickr

*

Offline a1ex

  • *****
  • 671
  • ML dev
Re: 500d development
« Reply #1161 on: 19 / May / 2011, 15:00:23 »

The Americans and the Japanese decided to engage in a competitive boat race. Both teams practiced hard and long to reach their peak performance. On the big day the Japanese won by a mile.

The American team was discouraged by the loss. Morale sagged. Corporate management decided that the reason for the crushing defeat had to be found, so a consulting firm was hired to investigate the problem and recommend corrective action.

The consultant's finding: The Japanese team had eight people rowing and one person steering; the American team had one person rowing and eight people steering. After a year of study and millions spent analyzing the problem, the American team's management structure was completely reorganized. The new structure: four steering managers, three area steering managers, and a new performance review system for the person rowing the boat to provide work incentive.

The next year, the Japanese won by two miles!

Humiliated, the American corporation laid off the rower for poor performance and gave the managers a bonus for discovering the problem.

:)

Re: 500d development
« Reply #1162 on: 19 / May / 2011, 15:14:26 »
I can see the syncing issue does not look so bad on the 550d.  This may be because Alex is using a buffer that updates less often than our 616 line buffer?  So the writing to the buffer overtakes the reading much less often statistically or randomly.  I mean while the reading is in the middle of happening.  Yet it does still happen on the 550d.  I'm hoping Coutts is able to find a slower buffer.  But still HD?  Perhaps it is slow only in movie mode?  I hope I'm using the correct words so everyone can understand me.  I will wait patiently to hear from Coutts.

Re: 500d development
« Reply #1163 on: 19 / May / 2011, 15:29:10 »
Haha very funny!  True to life.  I'm actually the coach for the girls Outrigger team.  I stand on the power boat and tell them how to paddle.  Doing nothing myself.  That's not the role I want here.

I've noticed something interesting about Outrigger Paddling.  Often I'm the steersmen.  It seems more efficient sometimes when I don't paddle at all.  I focus on keeping the boat straight only.  We have better race times this way.  It's been a tradition for many decades for the steersmen to refrain from paddling, except to steer the boat.  Yet in the 1950's the opposite was true.  He paddled like crazy!  That takes more talent than I have.  To keep the boat straight and paddle hard.  We've discovered the best method thru trial and error.  One person focuses on the direction the boat will take.  Everyone else paddles.

We need some sort of project manager, even on some basic level.  I don't think I would be the best choice.  Although it's what I do at Tricon.  Especially if we have 4+ people contributing to the code.  If someone volunteers to manage the logistics, I will do some coding!  We need someone to steer us.  Find some testers, gather the results, choose what improvements to make.  Decide what is the priority.  Coutts is doing it all now.  And managing himself quite well!


Re: 500d development
« Reply #1164 on: 19 / May / 2011, 15:32:00 »
Great job Coutts!  I could also be the Cheerleader.  I bet some of those buffers have a slower FPS rate?

*

Offline Coutts

  • *****
  • 538
  • www.flickr.com/couttsphotog
    • Flickr
Re: 500d development
« Reply #1165 on: 19 / May / 2011, 17:14:55 »




Canon 5d
Canon 50mm f/1.8
Sigma 24mm f/1.8

Flickr

*

Offline Coutts

  • *****
  • 538
  • www.flickr.com/couttsphotog
    • Flickr
Re: 500d development
« Reply #1166 on: 19 / May / 2011, 17:27:14 »
some odd findings...

i began investigating the new addresses i found that are only present while recording (from the 0x8404 pointer above)...



720p recording
dma pointer: 0x8404
buffer locations from pointer: 0x46026830 / 0x48026830
odd.png from img.py using 0x46026830:


after playing with it and adjusting things:
buffer location: 0x46027002 after adjustments
resolution: 928x530



1080p recording
dma pointer: 0x8404
buffer locations from pointer: 0x46041720 / 0x48041720
odd.png from img.py using 0x48041720:


after playing with it and adjusting things:
buffer location: 0x46042fb0 after adjustments
resolution: 1576x961


so i don't know.. the buffer addresses from that dma pointer are wrong??
btw i'll try to finish the testing tomorrow. when i'm all done i'll compile a wiki page with everything so it's well documented.
« Last Edit: 19 / May / 2011, 18:26:44 by Coutts »
Canon 5d
Canon 50mm f/1.8
Sigma 24mm f/1.8

Flickr

Re: 500d development
« Reply #1167 on: 19 / May / 2011, 22:28:02 »


*

Offline Coutts

  • *****
  • 538
  • www.flickr.com/couttsphotog
    • Flickr
Re: 500d development
« Reply #1168 on: 20 / May / 2011, 09:12:35 »
that should be fixed soon, it only happens with magic off, correct?

also i got my hdmi cable yesterday, so I'm going to start locating the hdmi buffers.
Canon 5d
Canon 50mm f/1.8
Sigma 24mm f/1.8

Flickr

Re: 500d development
« Reply #1169 on: 20 / May / 2011, 09:18:34 »
How about a volunteer simply to organize, manage, update, or clean the Bitbucket site for this project?
https://bitbucket.org/alins/magic-lantern-for-500d/issues

So the programmers can program.  And the testers can test.
Sort of a human interface between them?
Anyone?

 

Related Topics