libCEC version 2 support

[macarno@…]

This patch provides support for version 2 of the libCEC library from Pulse-Eight. It maintains backward compatibility back to v 1.6.0. It is build and tested with the git master branch of Myth and versions 1.8.0 and 2.0.5 of libCEC on Ubuntu. Changes to the configuration file should be improved, now it’s just a hack to make Myth build. Any help of someone who understands the configuration process better than me would be appreciated. libCEC support in general needs more work, tips or feedback are welcome.

[macarno@…]

Patch for libCEC version 2 support

[macarno@…]

Update

[macarno@…]

Updated the patch.

When Myth is selected as activated source the screensaver is reset.
Updated libCEC version detection.

[Bradley Baetz <bbaetz@…>]

Alternative patch

[Bradley Baetz <bbaetz@…>]

I've attached a slightly different patch. This works against libcec2.1 (in ubuntu 14.04) as well as libcec1.6 (in ubuntu12.04)

I wrote an initial version before seeing this, but then added in some of your changes.

The main differences are:

• applies cleanly, following my patch in #11986
• removed the runtime version check - if the wrong libcec.so is present, we don't get that far (libcec has a very odd scheme, where at compile time all mythtv does is #include a bunch of wrappers around dlopen, avoiding the need to link to libcec at build time. Not sure why it does that...)
• builds against libcec1.6 (the other patch uses some callbacks that are only available from v1.7)
• I didn't include the change to explicitly setting a logical address - that method is documented as deprecated and only for debugging purposes. Instead, I left it for libcec to handle.
• I kept the support for setting the parent device type from the patch, but not setting the physical address directly - the attached patch hard codes that to 2.2.0.0, so presumably only works for you? At least on my libcec version the search order is:
  • specified physical address
  • auto-detection in libcec of the port info from EDID (which only works on the ATI drivers and older kernels with older nvidia drivers that use /proc/acpi/video)
  • specified parent logical device/port combination (defaults to TV/port 1)

I kept the change you made to wake up the screen when the TV source goes active (although for libcec2 only; yours supports it from 1.7.1 but won't compile against older versions). However, it doesn't actually wake the screen up for me - I need a button press to do that like before. Is that part working for you? My screensaver/desktop might just be set up differently...

[Bradley Baetz <bbaetz@…>]

I kept the change you made to wake up the screen when the TV source goes active

and your code has a check that I skipped that doesn't do this on the first passthrough. I see that's because of a deadlock - the first time through, this is called in ::Open, while MythMainWindow? is being set up, so the call to ::ResetScreensaver? may deadlock trying to get the same lock

No idea why I didn't hit this earlier in all my testing - will fix and upload a different patch over the weekend

[bbaetz@…]

Updated patch

[bbaetz@…]

I've been using the attached patch on top of fixes/0.27 for the past few months without issues. (Ubuntu 14.04)

[Bradley Baetz <bbaetz@…>]

Actual patch

[Bradley Baetz <bbaetz@…>]

Oops, wrong patch - try this one instead

[Karl Dietz <dekarl@…>]

In ea74b8d0b78ced9126dd8a08ac82ef5a11f4b4ef/mythtv:

Error: Processor CommitTicketReference failed

GIT backend not available

[Karl Dietz <dekarl@…>]

In ff2cd531e4b5b135f29ce6247d2c8276557fd544/mythtv:

Error: Processor CommitTicketReference failed

GIT backend not available