Commit Graph

2 Commits

Author SHA1 Message Date
Deb Mukherjee
1a8394f7f3 Multiple resize filters
Adds multiple filters in the 0.5-1.0 range in the last stage
of the resize functions to prevent over-smoothing/aliasing

Change-Id: I1a615adb16f0df5095790945c94b28b4d6a6fc48
2014-01-25 09:39:48 -08:00
Deb Mukherjee
3cd37dfeb5 Adds a non-normative resize library to vp9 encoder
Adds an arbitrary-size resize library for use in scaling of input
frames in a non-normative manner in the vp9 encoder. The method
used is as follows:
Downsampling - Uses a 8 tap filter for factor of 2 decimation upto
a size just higher than the desired size. Then interpolates pixels
at a precision of 1/32 pel using a set of 8-tap filters.
Upsampling - Interpolates pixels at a precision of 1/32 pel using
a set of 8-tap filters.

There is no assembly optimization yet.

Change-Id: Ib5b81e174fc139da322bb97c8214d52289d60d8a
2014-01-21 16:50:00 -08:00