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Raw format, 4 months 6 days old, and 12 hits.

Anonymous
Wednesday, October 19th, 2011 at 1:51:37pm MDT 

  1. <iamlindoro> taylorr: http://www.mythtv.org/wiki/Talk:Hauppauge_HD-PVR  Last section
  2. <taylorr> iamlindoro: cool, it would be nice to have confirmation that those picture settings are in fact correct
  3. <iamlindoro> Person suggests those values were gleaned from the windows driver
  4. <iamlindoro> if true, it's likely they re
  5. <iamlindoro> er are
  6. <taylorr> yep, I wonder if you apply those values to 0x15 if they work or not
  7. <taylorr> kinda confused how an updated firmware could render those settings incorrect
  8. <iamlindoro> I'd bet not, considering devinheitmueller's response the it would require driver changes
  9. <taylorr> heh, maybe the latest firmware actually uses those values
  10. <iamlindoro> maybe so, yeah
  11. <taylorr> heh, look here -> http://mythtv.pastebin.ca/2091567
  12. <taylorr> looks like they just stuffed all those with 0x80 except for brightness of 0x86
  13. <taylorr> I bet I could change those and it wouldn't affect 0x15
  14. <taylorr> in fact I'm going to try
  15. <taylorr> jpabq: any idea if MythTV by default changes the picture settings ^^^
  16. <devinheitmueller> sorry, was afk.
  17. <taylorr> no worries, are we crazy or are we on the right track?
  18. <devinheitmueller> SO the issue is the format for those controls changed (in terms of the underlying registers).  Hence you need to poke slightly different registers in order to properly setup those color controls.  What's happening now is the old driver is jamming the values into the old registers, causing the video to appear corrupted.
  19. * esperegu has quit (Remote host closed the connection)
  20. <devinheitmueller> I hadn't seen the comments on the talk page previously.  What I would imagine the user has done (albeit perhaps not intentionally) is come up with the default values and is ensuring those get blown into the registers independent of what the actual values should be.
  21. <devinheitmueller> Long story short, to make it work properly (meaning being able to adjust contrast/brightness/saturation beyond the default) would require a relatively simple driver change.  But to do that somebody would have to do some dumps of the Windows driver and see exactly how the register format changed.
  22. * iamlindoro hope the upside of what changed all the registers is worth it :)
  23. <taylorr> devinheitmueller: any idea if it's the addresses or the actual register define that changes?
  24. <devinheitmueller> Basically it was a change to support Procamp controls in Arcsoft.  So it should be pretty easy to fix.  That said, the firmware also has other fixes which are much more valuable (including some sync fixes if I recall), so if you get past the issue with the color controls you should have a better experience overall.
  25. <devinheitmueller> It would be complete speculation for me to say they increased the effective size of the register.
  26. <devinheitmueller> It's the type of thing a developer with a copy of GraphEdit and a software USB analyzer could probably figure out in about an hour.
  27. <devinheitmueller> That said, I haven't done it myself.
  28. <taylorr> devinheitmueller: so even though a hauppauge engineer in the know could make the change easily we have to wait until someone reverse engineers it again :)
  29. * Guest38919 has quit (Read error: Connection reset by peer)
  30. * Guest38919 (~mike@c-24-21-63-118.hsd1.or.comcast.net) has joined #mythtv-users
  31. <devinheitmueller> That's a complicated question to answer.  Nobody at Hauppauge actually knew the answer off the top of their heads.

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