Remove the unused variable vp9_64x64_zeros from vp9_encodeframe_.

Change-Id: I34bfdcab9a9105440ad05154c1e0516e70258785

Change-Id: Iac55891ac9e6f13718c9f822aa099b5ca491832a

Change-Id: I2d96940fae4c7a16661a43c2bf6907d8b1c1a127

Use the zcoeff_blk buffer of PICK_MODE_CONTEXT to store the indexes
of all-zero-coeff block of the current best mode. Remove the temporary
buffer best_zcoeff_blk defined in the rate-distortion optimization
loop. This improves the speed performance by about 0.5% in all speed
settings.

Change-Id: Ie3e15988ddfa581eafa2e19a8228d3fe4a46095c

This commit moves token_cache buffer into macroblock struct, instead
of defining as a local variable in cost_coeffs. This avoids repeatedly
re-allocating memory space in the rate-distortion optimization loop.

The runtime at speed 0 reduces:
bus 2000kbps, 161692ms to 159951ms
football 600kbps, 229505ms to 225821ms

Change-Id: If7da6b0b6d8c5138a16271a33c4548fba33d8840

The commit changes to mask available intra prediction modes for test
based on prediction block size.

With this patch, encoding time of CpuUsed 2 reduces from 10% to 20% for
HD clips with a compression drop of 0.2%

Change-Id: I65f320f1237c0f5ae3a355bf7caf447f55625455

Minor code cleanup.

Change-Id: I47c1f794842d4570bb39cfd23b80f54f5606bba6

When the codec in VBR (or cq) mode hits its max q limits and is
struggling to hit a target bandwidth, the bit target per frame collapses.

In the first instance normal frames cap out at the maximum allowed
Q and then the ARF and GFs do the same. This latter behavior is not
generally desirable as GFs and ARFs are only effective from a quality
and data rate perspective if they have at lease some level of -Q delta
compared to the surrounding frames.

In this patch I define a separate max Q for GFs and ARFs that is
derived from but somewhat lower than that defined for normal frames.
In effect there is a minimum Q delta that will always be available for
GFs and ARFs regardless of the target rate and MAXQ setting.

This may of course mean that the absolute lowest rate obtainable for
a given clip is somewhat higher.

Change-Id: I268868b28401900d0cd87e51e609cd3b784ab54a

For VBR coding disable the recode loop for speeds > 0.

Results pending.

Change-Id: I2cd9a87c3fcbe39c05b954798d0671a4ca62c37f

Change-Id: I5222e3db2627a3a9f7fc34f2ab4554aa5807ed51

It is used only two times and it is more clear to use real type instead
of typedef.

Change-Id: Idc25c16504c3da4d040e0cdb33a2987631bb6a5b

We have two SSE2-optimized functions for idct4_1d:
  vp9_idct4_1d_sse2 <-- removing this one
  idct4_1d_sse2

vp9_idct4_1d_sse2 was used only by the following functions which already
have SSE2 optimized variants:
  vp9_idct4x4_16_add_c   -> vp9_idct4x4_16_add_see2
  idct8_1d               -> vp9_idct8x8_{16, 10, 1}_see2
  vp9_short_iht4x4_add_c -> vp9_short_iht4x4_add_see2

Change-Id: Ib0a7f6d1373dbaf7a4a41208cd9d0671fdf15edb

byte version of ronalds d207 ssse3 optimizations
(commit: f891f84d3ba9345b0074e682f0fea09b8ddf4f1e)

Change-Id: If15f71a589ea16f78ac86a501b0c5c6231dc9af1

To ensure fast encoding/decoding on devices without ssse3 support,
SSE2 optimization of sub-pixel filters was done. Test using 1080p
clip showed the decoder speeds were ~70fps with ssse3 filters, ~60fps
with sse2 filters, and ~15fps with c filters.

Change-Id: Ie2088f87d83a889fba80a613e4d0e287aadd785c

Change-Id: Ifef756a3a91423bb9f5411f06fa092027be21ecf

Renames:
  fdct4_1d   -> fdct4
  fadst4_1d  -> fadst4
  fdct8_1d   -> fdct8
  fadst8_1d  -> fadst8
  fdct16_1d  -> fdct16
  fadst16_1d -> fadst16

"_1d" suffix is redundant, so removing it. The same will happen with idct
in the next change sets.

Change-Id: Ibf421cd2f569146c6079269df7a31819c098265e

Renames:
  vp9_short_idct32x32_add   -> vp9_idct32x32_1024_add
  vp9_short_idct32x32_1_add -> vp9_idct32x32_1_add
  vp9_idct_add_32x32        -> vp9_idct32x32_add

Change-Id: Id85306f5814bac6c47463a6b5901a93082510666

This commit re-designs the per transformed block rate-distortion
costs tracking buffers. It removes redundant buffer usage, makes
the needed context memory allocation per VP9_COMP instance and
reuses the same buffer sets inside the rate-distortion optimization
search loop, thereby avoiding repeatedly requiring memory space.

It reduces speed 0 runtime:

bus at 2000 kbps from 166763ms to 158967ms,
football at 600 kbps from 246614ms to 234257ms.

Both about 5% speed-up. Local tests suggest about 2% to 5% speed-up
for speed 1 and 2 settings. This does not change compression
performance.

Change-Id: I363514c5276b5cf9a38c7251088ffc6ab7f9a4c3

Change-Id: Id5e31833a0ef40de9f64c2f5674af7083233bf14