Framework for alternate transforms for inter 32x32 and larger based
on dwt-dct hybrid is implemented.
Further experiments are to be condcuted with different
variations of hybrid dct/dwt or plain dwt, as well as super-resolution
mode.
Change-Id: I9a2bf49ba317e7668002cf1499211d7da6fa14ad
The wavelets implemented are 2/6, 5/3 and 9/7 each with
a lifting based scheme for even block sizes. The 9/7
one is a double implementation currently.
This is to start experiments with:
1. Replacing large transforms (32x32 and 64x64) with wavelets
or wavelet-dct hybrids that can hopefully localize errors better
spatially. (Will also need alternate entropy coder)
2. Super-resolution modes where the higher sub-bands may be
selectively skipped from being conveyed, while a smart
reconstruction recovers the lost frequencies.
The current patch includes two types of 32x32 and 64x64
transforms: one where only wavelets are used, and another
where a single level wavelet decomposition is followed
by a lower resolution dct on the low-low band.
Change-Id: I2d6755c4e6c8ec9386a04633dacbe0de3b0043ec
