skal 399b916d27 lossy decoding: correct alpha-rescaling for YUVA format ...

The luminance needs to be pre- and post- multiplied by
the alpha value in case of rescaling, for proper averaging.

Also:
- removed util/alpha_processing and moved it to dsp/
- removed WebPInitPremultiply() which was mostly useless
and merged it with the new function WebPInitAlphaProcessing()

Change-Id: If089cefd4ec53f6880a791c476fb1c7f7c5a8e60

2014-05-27 15:27:13 -07:00

2.7 KiB

Raw Blame History

View Raw