thumbnail-mode: implement to get a thumbnail image

Change-Id: If574c5d8b7bb84d1441323e7456e84c51181ffa4
Reviewed-on: https://gpro.palm.com/6030
Tested-by: HoonHee Lee <hoonhee.lee@lge.com>
Reviewed-by: Jeongseok Kim <jeongseok.kim@lge.com>
fakeadec : add "audio/x-private1-dts" mime-type

Change-Id: Idfaf47873ea923783a31e78e71be23670642592f
lpbin: fix to release sink when state has changed to NULL

Change-Id: Ib53861f189423984fcb871aa8b9fee1e69e0e892
Reviewed-on: https://gpro.palm.com/6148
Tested-by: HoonHee Lee <hoonhee.lee@lge.com>
Reviewed-by: Jeongseok Kim <jeongseok.kim@lge.com>
lpbin : enable use-buffering property

LPBin turn on the use-buffering property at Uridecodebin.
GST_MESSAGE_BUFFERING is going to be emitted

Change-Id: I532cbf4a766eec9e553ab95f9e7e6b71baa2ea7f
Reviewed-on: https://gpro.palm.com/6303
Reviewed-by: Jeongseok Kim <jeongseok.kim@lge.com>
Tested-by: Jeongseok Kim <jeongseok.kim@lge.com>
lpbin : add caps-video signal

Caps-video signal provides 'video-size' information of video-sink

Change-Id: I4f83bda1e984d4aca330904359c9b98bf4d74f95
Reviewed-on: https://gpro.palm.com/6234
Reviewed-by: Jeongseok Kim <jeongseok.kim@lge.com>
Tested-by: Jeongseok Kim <jeongseok.kim@lge.com>
lpbin : remove unnecessary unref code

Change-Id: I10fac094bf3e70b1c9b5d7acf0bc26b415a624ec
Reviewed-on: https://gpro.palm.com/6329
Reviewed-by: Jeongseok Kim <jeongseok.kim@lge.com>
Tested-by: Jeongseok Kim <jeongseok.kim@lge.com>