Change-Id: I960c6eb81f8d76c958e8af989700447f581a8812

adds unit testing via google test

Change-Id: I144b50a976d79251fc5135186a4e0a5051ed0e8c

Also includes some clean ups and refactoring.

Rebased.

Change-Id: I268c97fe325b4881103fe19f41ae818569e7ccf7

1. block types
There are only three types of blocks for 8x8 transformed MBs, i.e. Y
block with DC does not exist for 8x8 transformed MBs as all MB using
8x8 transform have 2nd order haar transform. This commit introduced
a new macro BLOCK_TYPES_8X8 to reflect such fact.

2. context counters
This commit also fixed the mixed of context_counters between 4x4 and
8x8 transformed MBs. The mixed use of the counters leads me to think
the existing the context probabilities were not properly generated
from 8x8 transformed MBs.

3. redundant collecting in recoding
The commit also corrected the code that accumulates entropy stats by
making sure stats only collected for final packing, not during the
recode loop

Change-Id: I029f09f8f60bd0c3240cc392ff5c6d05435e322c

This patch expands the set of prev contexts used for video coding
from 3 to 4.

There is a small improvement of the order of 0.08% for derf and
0.15% on the HD set. The tests were rerun after the various merges
last week. There are two columns in each test - the first are the
results with the mbskip change, and the second with expanded contexts
added on top of that.

Derf:
http://www.corp.google.com/~debargha/vp8_results/explibvpx_newentropy_expcontext.html

HD:
http://www.corp.google.com/~debargha/vp8_results/explibvpx_hd_newentropy_expcontext.html

Rebased.

Broke up 80 char lines.

Change-Id: I82d2e72d054e530cbf5ce9aa0e6d85c582965675

missed the decoder side in last commit

Change-Id: Ie97f35189e93f78783e3d8072a36eea768beed27

This commit adjusted slightly the 4x4 coefficents band definition to
better classify coefficients with similar distributions and usages.
It helps derf set about .1%, it is alos slightly positive for std-hd
set, where 4x4 blocks are used less frequently.

The commit also removed a const array not in use.

Change-Id: I78d16905d4036641ec905b0c32c190c1def5b249

This commit added usage information that was missed in usage output.

Change-Id: If1a85bcc20131314f5d047c6db4e76a40d945e66

Change-Id: I9f1686249ac812f7b9b872eabe3970d1dfb25e56

Change-Id: I87291fb40c745f34c36b067f47abdf69774a812f

Removes a set of spurious declarations that were inadvertently checked
in.

Change-Id: I2f80b6b66d2ec9ea667c810eaf1a6e7d52478c67

The ARNR filter uses a motion compensated temporal filter,
but the motion estimation implementation accounts for the
cost of the mv in its decision making process. The ARNR
filter uses a dummy cost table initialized to 0 as a way
to ignore the mv costs (which are irrelevant to the filter).

This CL modifies the ARNR filter implementation to so that
the mv costing is ignored without the requirement for
dummy tables.

Change-Id: I0dd9620c3b70682f938b2a70912c11d4d7c9284c

Adds a speed feature to conduct a brute force search among a set of
available interpolation filters for the best one in an RD sense.

There is a gain of 0.4% on derf, 1.0% on Std-HD.

Patch 2: A macro added to determine if the encoder state is reset
for each new filter tried.

Patch 3: rebase, also fixes a bug (decodframe.c) introduced by a
couple of missing function pointer assignements.

Patch 4: rebase.

Change-Id: Ic9ccca9d8c35c6af557449ae867391a2f996cc29

This commit merge the QI mode experiment. As the experiment affects
the encoding of intra coding modes on key frame only, the overall
effect of the experiment on encoding tests is insignificant.

Change-Id: I9e4e3933adface88867ad429cee3986e529c511d

The commit merges the UVINTRA experiment and removed the related
macros. The overall effect of the experiment is a small gain (.1%
on derf)

Change-Id: Ia34b3312fb9b5b34c9ba111bf0fa78c6f78ac80b

Change-Id: I8708358bb37edabcbe5dfc755ed18791d9e143c4

Adds differential encoding of prob updates using a subexponential
code centered around the previous probability value.
Also searches for the most cost-effective update, and breaks
up the coefficient updates into smaller groups.

Small gain on Derf: 0.2%

Change-Id: Ie0071e3dc113e3d0d7ab95b6442bb07a89970030

Change-Id: I7c0597dede20cc71145c053f76bd99aaf759d144

This commit changed to enable the usage 8x8 transform for all frame
type, all resolution and all quantizer range. This has an overall
benefit .2% to .3% in term of compression, but more importantly,
the difficult clips benefits much more, up to 2% to 3% on clips
like football, harbour and so on.

We observed some weird humps on very high end on a couple of youtube
clips, but have determined the underly cause was the aggressive zbin
having an effect of lowering rate with lower quality, which have
an impact on slide show clips around 60DB.

The commit does not change the association between prediction mode
and transform size.

Change-Id: I33043bdce6207528ae00b4a4b26d8ff63cfea1f4

This is to prevent the evaluation of a mode from using values left
over from a mode evaluated prior in the loop.

Change-Id: Ife2c6ceb76d2f7365fd262515d3ae48229033c2d

Change-Id: I9d6083d54e3d478ec20dc6dc48d3f45eb5c7e16b

Change-Id: I0af3395500b1cb0ed629249eb6636a0c9322cb18

With the NEWENTROPY experiment enabled encoding certain clips
produced invlid bitstreams, or files that had a high degree
of artefacts.

This was the results of pointers in MACROBLOCKD not being
setup correctly (mode_info_context and prev_mode_info_context).

Change-Id: Ice13e1efa8bd122997d2f8f3f1e761c6c16e0403

These contexts need to be saved and restored for recode, otherwise
encoder/decoder mismatch happens for some clips (eg._mobcal 720p)

Change-Id: Ic65cfa0bf56ed0472ecab962ce31394d59d344bf

Change-Id: Iccd0f09a4db02a2bad644deb3c76189c5f5612a3

Added code to save the coding context in vp8_rd_pick_inter_mode
when the coding mode is forced to ARF(0,0).

Also, modified the MV bounds computation to comply with the
change in MV border from 32 to 64 pixels.

Change-Id: I96963a6f5f4d04ce84c807ae11e0635177c3ad6c

Turning off the interpolation filter selection based on edge
proportion. This heuristics has not been working as well as
expected and I have started a more rigorous investigation into
this. We can turn this off for now since it is unnecessarily
slowing things down.

Rebase.

Change-Id: Ic5958b2b3a35ec2d8eb73b6d81617ca8fbe07e74

This commit tries to address an issue related to the oddity shown on
HD _mobcal clip, where some rather ugly blocks shown in the second
frame at low-mid bit rates if the third frame is not made a key frame
by he encoder. The fixes include: 1)  made calls to sad_16x16 to be
consistent with function prototype. 2) remove the error bias to intra
and golden in mbgraph search. 3) changed the error accumulation on
inter_segment encoding to avoid potential out-of-range. 1) has no
effect on encoding results.

Encoding test show that the overall effect of the commit helps about
.2%(HD) to .3%(cif)

Change-Id: I930975a2d0c06252f01c39e0a02351529774e30b

The commit removed a limit on key frame detection, which caused a big
drop in all metric measurements for standard HD clip such as _mobcal.

This single change helps two standard HD clips by a huge amount, which
help the overall std-hd set by 2.4% (glb psnr), 0.9% (avg_psnr), 2.1%
(vpxssim).

In the result page:
http://pafr9.prod.google.com:26163/?/cns/rc-d/home/on2-prod/sunkaras/borg-test/yaowu

2012_04_02_1649_yaowu_bugfix_std-hd
2012_04_03_1452_yaowu_hump_std-hd
represent the encoding test results and std-hd set prior and after this
commit respectively.

Change-Id: Ie4313e317c737ea0e699c3a7919c1376744baa1a

This commit has made macro_block_yrd_8x8 and macro_block_yrd_8x8 to
take same parameters. It also removed a few unnecessary shifts that
has the potential to create out-of-range distortion values.

Change-Id: I4ec5afb307c3685c2a67a07c2850f0927d214455

Deleted check_gf_quality().

Change-Id: If75fbd84accb1f6471ad6ea6ff2b65ae99976f5d

Some code re-factored / moved to allow the main
pack operation inside the recode loop so  that the
size estimate is accurate.

Deletion of some redundant code relating to one pass.

Aproximate improvement over March 27 code base:
Derf 0.0%, YT 0.5%, YThd 0.3% Std_hd 0.25%

Change-Id: Id2d071794ab44f0b52935f6fcdb5733d09a6bb86

Update the costing of skip in the recode loop and rd code.

Change-Id: I2e5ebbd7ddf201212b32441321e12626cd0423e9

Some adjustments to zbin for t8x8.
Changes to rules for sizing forced key frames.
Some extra stats output in tmp.stt.

Approximate  gain on YT-hd set 0.5%

There are still issues in sizing key frames and gf/arf frames
when the image is largely static. These in part relate to
problems with cost estimates in the recode loop.

Change-Id: I6f0159dc8a8faeab4115a19c668d442491619a68

This is the first patch to add superblock (32x32) coding
order capabilities. It does not yet do any mode selection
at the SB level, that will follow in a further patch.

This patch encodes rows of SBs rather than
MBs, each SB contains 2x2 MBs.

Two intra prediction modes have been disabled since they
require reconstructed data for the above-right MB which
may not have been encoded yet (e.g. for the bottom right
MB in each SB).

Results on the one test clip I have tried (720p GIPS clip)
suggest that it is somewhere around 0.2dB worse than the
baseline version, so there may be bugs.

It has been tested with no experiments enabled and with
the following 3 experiments enabled:
  --enable-enhanced_interp
  --enable-high_precision_mv
  --enable-sixteenth_subpel_uv
in each case the decode buffer matches the recon buffer
(using "cmp" to compare the dumped/decoded frames).
Note: Testing these experiments individually created
errors.

Some problems were found with other experiments but it
is unclear what state these experiments are in:
  --enable-comp_intra_pred
  --enable-newentropy
  --enable-uvintra

This code has not been extensively tested yet, so there
is every likelihood that further bugs remain. I also
intend to do some code cleanup & refactoring in tandem
with the next patch that adds the 32x32 modes.

Change-Id: I1eba7f740a70b3510df58db53464535ef881b4d9