va: Fix 12 bits decoder bugs in HEVC.

We now fail to decode all 12 bits hevc stream. The rt format for 12 bits is not correct.

assigned to @gstreamer-merge-bot

mentioned in commit He_Junyan/gst-plugins-bad@7b94620c

mentioned in commit He_Junyan/gst-plugins-bad@b348e00a

mentioned in commit He_Junyan/gst-plugins-bad@ebb64a20

added 3 commits

• b348e00a - va: Fix a typo in video format mapping.
• 7b94620c - va: Add 12 bits rt_format setting in H265.
• ebb64a20 - va: Improve the default mapping between rt_format and video format.

Compare with previous version

I couldn't merge this branch: CI failed!

assigned to @gstreamer-merge-bot and unassigned @He_Junyan

mentioned in commit He_Junyan/gst-plugins-bad@08495832

mentioned in commit He_Junyan/gst-plugins-bad@1b4c9eae

mentioned in commit He_Junyan/gst-plugins-bad@8d7e6bfb

added 4 commits

• 7feed2f1 - 1 commit from branch gstreamer:master
• 1b4c9eae - va: Fix a typo in video format mapping.
• 08495832 - va: Add 12 bits rt_format setting in H265.
• 8d7e6bfb - va: Improve the default mapping between rt_format and video format.

Compare with previous version

merged

changed milestone to %1.19.2