Rework supertx segment handling and adaptive quantization.
Segment level quantizer settings for supertx coded blocks are now selected based on the minimum of all segment IDs within a supertx coded block. This also fixes the 3 adaptive quantization modes with supertx. Change-Id: Ib5db099539d4f82f240e1d745d6e5264f8b34cde
Showing with 125 additions and 49 deletions