I implemented this as part of the OpenELEC project.

It helps debug issues if we can easily identify the XBMC thread by name. This patch implements just that.

This second incarnation now implements a proper configure check to ensure we are using the capabilities of the library on various platforms (esp. when using glibc < 1.12).

I don't believe the lock=false call should ever be done unless caller already has lock

On a Pi, imageres and fanartres are set quite low (typically 512 and 720 or lower).
So, when caching the artwork there is a resize step involved.
The OMXImage jpeg decoder has the option to resize "for free".
Unfortunately this currently only limits the resize to current GUI resolution,
so there is often a second resize done by the ARM. This is very slow.
The larger decoded image also requires more RAM.

With fanartres=512, you currently get resize during decode of 1920x1080 to 1280x720 (gui res).
Then before encode there is a resize to 910x512. The two stage resize reduces image quality.

This fix takes a bit more care to include the imageres/fanartres resize during the decode.
I needed to make the 16:9 check a little more lax to also detect a 16:9 image after it's been resized.
I've gone for differs from 16:9 by 1%, rather than the existing exact match of 16:9.

GUIScrollBarControl: fix onright/ondown navigation when master control doesn't have enough items to fill at least 1 page

fixed: Setting streamdetails for auto thumbs/flags didn't work for items with incomplete/empty infotags

cosmetic changes: sync with dvdplayer (changes) this was added in https://github.com/xbmc/xbmc/commit/28de0da9afeb6bcbc2c8a3cad31c79225b07ec7d

fixed: We can only obtain the aspect & duration this way when the Process() thread is running Based on https://github.com/xbmc/xbmc/commit/9db853e551f0380aac884fcb6c9564a725fcb966 in master and added in https://github.com/xbmc/xbmc/commit/28de0da9afeb6bcbc2c8a3cad31c79225b07ec7d

dvdplayer: fixed time_offset is difference between adjusted Based on https://github.com/xbmc/xbmc/commit/406ef63c542bc087f50d68f0046430e04b20f3b6 in master and added in https://github.com/xbmc/xbmc/commit/28de0da9afeb6bcbc2c8a3cad31c79225b07ec7d

dvdplayer: another fix for seeking/fw/rw in PVR Based on https://github.com/xbmc/xbmc/commit/676b9e7347be62a518851c30d7e203b71849fc47 in master and added in https://github.com/xbmc/xbmc/commit/28de0da9afeb6bcbc2c8a3cad31c79225b07ec7d

fix deadlock when trying to go to disc menu Based on https://github.com/xbmc/xbmc/commit/befdcfad8d2b14c9d935c3662a56853d617f884d in master and added in https://github.com/xbmc/xbmc/commit/28de0da9afeb6bcbc2c8a3cad31c79225b07ec7d

dvdplayer: allow 200ms of automatic time update instead of 1ms Based on https://github.com/xbmc/xbmc/commit/a489fb5c8607153c0b136fc1e2afcd543f1b9e19 in master and added in https://github.com/xbmc/xbmc/commit/28de0da9afeb6bcbc2c8a3cad31c79225b07ec7d

dvdplayer: ff/rw/seek was broken for inputs implementing IDisplayTime Based on https://github.com/xbmc/xbmc/commit/4c90033e6987d512c1925ab6a5e31ef88bcdb28c in master and added in https://github.com/xbmc/xbmc/commit/28de0da9afeb6bcbc2c8a3cad31c79225b07ec7d

dvdplayer: a disabled stream could be re-selected for bluray and dvd Based on https://github.com/xbmc/xbmc/commit/b2fc0508212023cdcd11d05d72ed9a4d4935a0d8 in master and added in https://github.com/xbmc/xbmc/commit/28de0da9afeb6bcbc2c8a3cad31c79225b07ec7d

dvdplayer: align HasAudio with HasVideo Based on https://github.com/xbmc/xbmc/commit/cfb14c3c7400e2d9dbe2d452274339fa57557d9b in master and added in https://github.com/xbmc/xbmc/commit/28de0da9afeb6bcbc2c8a3cad31c79225b07ec7d

dvdplayer: make HasVideo return true if a video stream was opened since playback has started - fixes missing video info on channel change Based on https://github.com/xbmc/xbmc/commit/bd49c32ec38b7ecd7bb43eb995c9ff632d18d3a1 in master and added in https://github.com/xbmc/xbmc/commit/28de0da9afeb6bcbc2c8a3cad31c79225b07ec7d

dvdplayer: don't use OpenDefaultStreams() if something else dictate Based on https://github.com/xbmc/xbmc/commit/dda59f043e77a6cfbbd3a7378406134dad540e60 in master and added in https://github.com/xbmc/xbmc/commit/28de0da9afeb6bcbc2c8a3cad31c79225b07ec7d

fixed: Compile warning (unused label) Based on https://github.com/xbmc/xbmc/commit/132730ec5e976642109ec048545262c59453d5b6 in master and added in https://github.com/xbmc/xbmc/commit/28de0da9afeb6bcbc2c8a3cad31c79225b07ec7d

It was originally meant to allow 1 second. But has at some point
been broken since the unit has been changed from ms to dvd time

dvdplayer: make HasVideo return true if a video stream was opened since playback has started - fixes missing video info on channel change

This works for both dvd and bluray navigation