This rewriting reflects changes made in commit "Improve the
accuracy of forward walsh-hadamard transform". Since this function
is not called much, only a small encoder performance gain (~0.5% )
is seen.

Change-Id: Ie9df58a43028a11fd5b115c4bbe3141f7596578b

Instead of doing 8-bit data unpack and 16-bit subtraction, use
psubb to do 16 8-bit subtractions and pcmpgtb to preserve the
sign information. This does not bring noticable gain since
these functions are not called frequently.

Change-Id: I90a0dfaa3db9d422e4ada324076596ffb178548e

../libvpx/vp8/encoder/bitstream.c: In function ‘pack_inter_mode_mvs’:
../libvpx/vp8/encoder/bitstream.c:1026: warning: array subscript has type ‘char’

Change-Id: Ic77491e0a172fa1821e5b3e914d0dc41fe87c00f

In order to know if all 4/8 neighbor points are within the bounds,
4 bounds checking are enough instead of checking 4 bounds for
each points (16/32 checkings). This improvement reduces cost of
vp8_diamond_search_sadx4() by 30%, and gives encoder a 1.5%
performance gain (test options: 1 pass, good, speed=4).

Change-Id: Ie8da29d18a6ecfc9829e74ac02f6fa70e042331a

Typo had function defined as _ssse2 and prototyped as _sse2.

Change-Id: If9f19da1a83cff40774a90cf936d601c0bf1b7fe

QWORD was being undefined because it was being used
incorrectly.

Change-Id: I3610cefa3d6f0da4054316760f78b9694cde3876

Use cpuid to check the vendor string against known
architectures.

Change-Id: I3fbd7f73638d71857a0c4a44a6275eb295fb4cef

=r was not restrictive enough and the compiler was not returning
ebx correctly.

Change-Id: I7606e384067bd5fb69189802f1ff64ccc5aa02d6

This patch moves the scattered updates to the mb skip state
(mode_info_context->mbmi.mb_skip_coeff) to vp8_tokenize_mb. Recent
changes to the quantizer exposed a bug where if a macroblock
could be coded as a skip but isn't, the encoder would run the
loopfilter but the decoder wouldn't, causing a reference buffer
mismatch.

The loopfilter is controlled by a flag called dc_diff. The decoder
looks at the number of decoded coefficients when setting this flag.
The encoder sets this flag based on the skip state, since any
skippable macroblock should be transmitted as a skip. The coefficient
optimization pass (vp8_optimize_b()) could change the coefficients
such that a block that was not a skip becomes one. The encoder was
not updating the skip state in this situation for intra coded blocks.

The underlying issue predates it, but this bug was recently triggered
by enabling trellis quantization on the Y2 block in commit dcd29e36,
and by changing the quantizer range control in commit 305be4e4.

Change-Id: I5cce5da0dbc2d22f7d79ee48149f01e868a64802

These functions should never change their input, and there's no
 reason not to declare that.
This allows them to be passed static const data.

Change-Id: Ia49fe4b01e80e9afcb24b4844817694d4da5995c

There is currently no inexact version of this function, so do not
 even compile it without EXACT_QUANT.
This will prevent someone from inadvertently trying to use it without
 the proper EXACT_QUANT setup.

Change-Id: Ia13491e0128afb281c05c9222ee5987101e4010d

This is just eliminating some cruft.
Although a number of variables are declared only when INTRARDOPT
 is defined, they are used elsewhere without that protection, and
 no longer just for intra RDO.
The intra_rd_opt flag was hard-coded to 1 and never checked.

Change-Id: I83a81554ecee8053e7b4ccd8aa04e18fa60f8e4f

An earlier automatic transform changed eg '\nOptions' to '\n_options'
which is incorrect in these printfs. Fix these.

Change-Id: I7e0f37931ef82b79fadddd7058ce0df5572e2ca1

one comment in the README said the configure script was in src.
it's not. pointed out by Aaron Sherman

Change-Id: Ife0b53e096856d46669a99eefd71ac23d0351f65

Remove vp8/encoder/x86/csystemdependent.c

Change-Id: I7c590dcd07b68704d463a1452f62f29ffb1402f4

Moved vp8_fast_quantize_b_sse from quantize_mmx.asm into
quantize_sse2.asm and renamed.  Updated the assembly code to
match the C version.

Change-Id: I1766d9e1ca60e173f65badc0ca0c160c2b51b200

As the zbin and rounding constants are normalized, rounding effectively
does the zbinning, therefore the zbin operation can be removed. In
addition, the memset on the two arrays are no longer necessary.

Change-Id: If39c353c42d7e052296cb65322e5218810b5cc4c

yasm has to be preferred as currently nasm produces marginally less
efficient code (longer opcodes). Filed for nasm as:
https://sourceforge.net/tracker/?func=detail&atid=106208&aid=3037462&group_id=6208

OTOH package should be built always the same, no matter which additional
packages are / are not present on the system. As the package should be
built with nasm (as yasm may not be available) we should not use yasm
even if it is possibly available.

nasm >= approx. 2.09 is required for the nasm compilation as the former
versions had a section alignment bug.

Provide nasm compatibility. No binary change by this patch with yasm on
{x86_64,i686}-fedora13-linux-gnu. Few longer opcodes with nasm on
{x86_64,i686}-fedora13-linux-gnu have been checked as safe.

Change-Id: Icb0fe39c64bbcc3bcd7972e392fd03f3273340df

Filed for nasm as:
https://sourceforge.net/tracker/?func=detail&atid=106208&aid=3081103&group_id=6208

nasm just does not accept any size parameter for movhps:
1.asm:2: error: mismatch in operand sizes

Some parts of libvpx already use MMWORD for movhps and MMWORD is
defined-out so it is compatible both with yasm and nasm.

Provide nasm compatibility. No binary change by this patch with yasm on
{x86_64,i686}-fedora13-linux-gnu.

Change-Id: I4008a317ca87ec07c9ada958fcdc10a0cb589bbc

nasm does not automatically assume the source's directory also for its
include files.

Provide nasm compatibility.  No binary change by this patch with yasm on
{x86_64,i686}-fedora13-linux-gnu.  Few longer opcodes with nasm on
{x86_64,i686}-fedora13-linux-gnu have been checked as safe.

Change-Id:	I386efa0cca5d401193416c11bd7363a283541645

nasm does not support `label wrt rip', it requires `rel label'. It is
still fully compatible with yasm.

Provide nasm compatibility. No binary change by this patch with yasm on
{x86_64,i686}-fedora13-linux-gnu. Few longer opcodes with nasm on
{x86_64,i686}-fedora13-linux-gnu have been checked as safe.

Change-Id: I488773a4e930a56e43b0cc72d867ee5291215f50

nasm requires the instruction length (movd/movq) to match to its
parameters. I find it more clear to really use 64bit instructions when
we use 64bit registers in the assembly.

Provide nasm compatibility. No binary change by this patch with yasm on
{x86_64,i686}-fedora13-linux-gnu. Few longer opcodes with nasm on
{x86_64,i686}-fedora13-linux-gnu have been checked as safe.

Change-Id: Id9b1a5cdfb1bc05697e523c317a296df43d42a91

This code adjust the impact of the amount and speed of motion
on GF and KF boost.

Sections with lots of slow motion will tend to have a
somewhat bigger boost and sections with fast motion may
have less.

There is a knock on effect to the selection of the active
quantizer range.

This will likely require further tuning but helps with a couple
of particularly bad edge cases.

Change-Id: Ic2449cda7305672b69acf42fc0a845b77ac98d40

Experimented with different value for Y2_RD_MULT ranging f[1, 32],
without adapting the value to MB coding mode/frame type/Q value,
4 works out best among all values, providing overall 0.1% coding
gain on the test set.

Change-Id: I6b2583a8aa5db5e7e5c65c646301909c0c58f876

If temporal filtering is enabled but a filter type is not specified
centered filter mode is used by default.

Change-Id: I87306f267c1390074c806c506a69b4ba914d92a2

Like the ARMv6 code, these functions were accessing values below
 the stack pointer, which can be corrupted by signal delivery at
 any time.

Modified the range checking of parameters used in the
AltRef temporal filter (arnr-max-frames, arnr-strength,
arnr-type) and default values for each of them.

Change-Id: Ib261028d501b9523f6e44cb4790cc52167b6e92b

This function graduated from being a test func to something that's on
by default. Rename it and remove some spurious comments that confuse
its status.

Change-Id: I689695a3ad29c35e9a72a43ec93766733ac6c20b