Don't use vp9_decode_coefs_4x4() for 2nd order DC or luma blocks. The
code introduces some overhead which is unnecessary for these cases.
Also, remove variable declarations that are only used once, remove
magic offsets into the coefficient buffer (use xd->block[i].qcoeff
instead of xd->qcoeff + magic_offset), and fix a few Google Style
Guide violations.

Change-Id: I0ae653fd80ca7f1e4bccd87ecef95ddfff8f28b4

Use these, instead of the 4/5-dimensional arrays, to hold statistics,
counts, accumulations and probabilities for coefficient tokens. This
commit also re-allows ENTROPY_STATS to compile.

Change-Id: If441ffac936f52a3af91d8f2922ea8a0ceabdaa5

This adds Debargha's DCT/DWT hybrid and a regular 32x32 DCT, and adds
code all over the place to wrap that in the bitstream/encoder/decoder/RD.

Some implementation notes (these probably need careful review):
- token range is extended by 1 bit, since the value range out of this
  transform is [-16384,16383].
- the coefficients coming out of the FDCT are manually scaled back by
  1 bit, or else they won't fit in int16_t (they are 17 bits). Because
  of this, the RD error scoring does not right-shift the MSE score by
  two (unlike for 4x4/8x8/16x16).
- to compensate for this loss in precision, the quantizer is halved
  also. This is currently a little hacky.
- FDCT and IDCT is double-only right now. Needs a fixed-point impl.
- There are no default probabilities for the 32x32 transform yet; I'm
  simply using the 16x16 luma ones. A future commit will add newly
  generated probabilities for all transforms.
- No ADST version. I don't think we'll add one for this level; if an
  ADST is desired, transform-size selection can scale back to 16x16
  or lower, and use an ADST at that level.

Additional notes specific to Debargha's DWT/DCT hybrid:
- coefficient scale is different for the top/left 16x16 (DCT-over-DWT)
  block than for the rest (DWT pixel differences) of the block. Therefore,
  RD error scoring isn't easily scalable between coefficient and pixel
  domain. Thus, unfortunately, we need to compute the RD distortion in
  the pixel domain until we figure out how to scale these appropriately.

Change-Id: I00386f20f35d7fabb19aba94c8162f8aee64ef2b

Change-Id: I178352813d2b8702d081caf405de9dbad9af2cc3

Only declare the functions in vpx_scale RTCD and include the relevant
header.

Remove unused files and functions in vpx_scale to avoid wasting time
renaming. vpx_scale/win32/scaleopt.c contains functions which have not
been called in a long time but are potentially optimized.

The 'vp8' functions have not been renamed yet. That is for after the
cleanup.

Change-Id: I2c325a101d60fa9d27e7dfcd5b52a864b4a1e09c

Change-Id: I9f0ae635fb9a95c4aa1529c177ccb07e2b76970b

Change-Id: Ibabf18947f90cb4f45052763ebf44cfb8209bd8b

This patch reduces the cpu cost of the MV ref
search by only allowing insert for candidates
that would be in the current top 4.

This could alter the outcome and slightly favors
near candidates which are tested first but also
limits the worst case loop count to 4 and means in
many cases it will drop out and not happen.

Change-Id: Idd795a825f9fd681f30f4fcd550c34c38939e113

1. remove the dependency on non existing "vp9_temporal_filter_x86.h"
2. prefix filenames with vp9_ in obj_int_extract.bat to reflect the
change of the actual filenames.

Change-Id: Ib1b4d96ac41788f76917764a6722d8461c857302

The commit changed the trellis quantization function optimize_b() to
work for MBs using all transform sizes, and eliminated the function
for MB using 16x16 transform only, optimize_b_16x16.

Change-Id: I3fa650587ab5198ed16315b38754783a72b33ba2

Only declare the functions in vpx_scale RTCD and include the relevant
header.

Remove unused files and functions in vpx_scale to avoid wasting time
renaming. vpx_scale/win32/scaleopt.c contains functions which have not
been called in a long time but are potentially optimized.

The 'vp8' functions have not been renamed yet. That is for after the
cleanup.

Change-Id: I2c325a101d60fa9d27e7dfcd5b52a864b4a1e09c

Change-Id: I9f0ae635fb9a95c4aa1529c177ccb07e2b76970b

Change-Id: I467bf0fdf3b35326bcce58d5459e6d2dbfd6c5e5

Change-Id: If0cc1ab60dff6abd67dae7c7b3dc83a1afd7fe65

- vpx_calloc is called on arf_not_zz above.
- Note The removed vpx_memset call had an issue with sizeof.

Change-Id: I86fd7a167d0a042e581e613e2a6c0b5e63073fc6

Adds support for compound inter-intra prediction with superblocks.
Also, fixes a bug that disabled intra modes for superblocks.

Change-Id: I4d711317e1bc19df8c2f32dc645429f7fff31036

Allows switchbale filters to be used without mismatch when the
superblock experiment is on.

Also removes a spurious clamping code in decodemv.c which causes
rare encode/decode mismatches.

Change-Id: I809d9ee0b2859552b613500b539a615515b863ae

Change-Id: Ib5106d4772450f8026f823dd743f162ab833b1d6

Change-Id: I2c252f3ddcc99e96c1f5d3dab8bcb25a2a3637ea

Refactoring for improved readability - no bitstream or
performance change.

Change-Id: I4488ed4715f8dbe38c66431106478669041b8b33

Change-Id: I6a224c590b6a2c5b91f9084ffb8083d18223a206

Change-Id: I1f49d96cdb5e342041c9a72ef31df361a1b609eb

Change-Id: I54a122cc8c0b6ed2dbc3c6ecfcd44736cd40b687

Change-Id: I429a97ac57db3de0bf67ce3f3fe0c6b409f77a9e

Previously, the "!=" check is logically incorrect when eob is at 0 and
effective coefficient starting position is 1. This commit should have
no effect on bitstream.

Change-Id: I6ce3a847c7e72bfbe4f7c74f88e3310c6b9b6d30

Change-Id: Iaa67bcf1e866dfe255c4e458d4e51e9c708ffcf4

Change-Id: Ibea3bc80eb26a975faaa60268bbc93237f82bc57

Change-Id: Ibe11e9275949b26a77fa9c8ac2e7c356ae533d5d

Change-Id: I1302a6eaa840d419e8bb9ad0673e42ef139d3fee

Change-Id: I9d0efdff0c79ea4bdd660098106b64776bdd4483

Change-Id: Ie34820c1b6eaba9cf9316415a46f48af79c41646

Change-Id: I914bcc669297d3414261486bf1bfb716c2ecc804

clears up some warnings

Change-Id: I9899637497c6ad7519f098e055ab98580ae6d688

Change-Id: I20c426e91ee49666db42e20eb074095ab6b8ec5d

Change-Id: Ieefd76e164ca4aa87597da0412977614ddfbacb7

This patch allows use of 8x8 and 4x4 ADST correctly for Intra
16x16 modes and Intra 8x8 modes when the block size selected
is smaller than the prediction mode. Also includes some cleanups
and refactoring.

Rebase.

Change-Id: Ie3257bdf07bdb9c6e9476915e3a80183c8fa005a

Given the way mode_context is updated, the benefit of an additional
default is not signficant.

Change-Id: I67489453e8781340b18e26a1cc2f04e9221004a2

Change-Id: Ia1cce221f8511561b9cbd8edb7726fbc286ff243

and some miscellaneous invoke left overs

Change-Id: I63191b1bfd3bea4ce30cceaeb686ec850570fc43

This commit makes sure Y2 entropy coding context is always updated on
every macroblock even there is no Y2 block.

Change-Id: Ie307cfc46526efe55613be39f9f178d2531b56ba