tree f9ca4cd8e73ec48217cf2de27583846da8d32fba
parent 52256cdbcaf07e637c964f92671dfc82321f2125
author Jingning Han <jingning@google.com> 1374873097 -0700
committer Jingning Han <jingning@google.com> 1374873411 -0700

Special handle on DC only inverse 8x8 2D-DCT

This commit enables a special handle for the 8x8 inverse 2D-DCT,
where only DC coefficient is quantized to be non-zero. For bus_cif
at 2000 kbps, it provides about 1% speed-up at speed 0.

Change-Id: I2523222359eec26b144cf8fd4c63a4ad63b1b011