Change bitreading functions to use a larger window which is refilled less
 often.

This makes it cheap enough to do bounds checking each time the window is
 refilled, which avoids the need to copy the input into a large circular
 buffer.
This uses less memory and speeds up the total decode time by 1.6% on an ARM11,
 2.8% on a Cortex A8, and 2.2% on x86-32, but less than 1% on x86-64.

Inlining vp8dx_bool_decoder_fill() has a big penalty on x86-32, as does moving
 the refill loop to the front of vp8dx_decode_bool().
However, having the refill loop between computation of the split values and
 the branch in vp8_decode_mb_tokens() is a big win on ARM (presumably due to
 memory latency and code size: refilling after normalization duplicates the
 code in the DECODE_AND_BRANCH_IF_ZERO and DECODE_AND_LOOP_IF_ZERO cases.
Unfortunately, refilling at the end of vp8dx_bool_decoder_fill() and at the
 beginning of each decode step in vp8_decode_mb_tokens() means the latter
 requires an extra refill at the end.
Platform-specific versions could avoid the problem, but would require most of
 detokenize.c to be duplicated.

Change-Id: I16c782a63376f2a15b78f8086d899b987204c1c7

Add same fix in subpixel_sse2.asm.

Change-Id: Icfda6103cbf74ec43308e96961dd738aa823c14d

Change-Id: I7b35f4717cdd204224112f72471b551617262417

Change-Id: I2a97f08cc3c7808ce5be39e910cc5147ecf03a1d

Added sse2 version of vp8_regular_quantize_b which improved encode
performance(for the clip used) by ~10% for 32 bit builds and ~3% for
64 bit builds.

Also updated SHADOW_ARGS_TO_STACK to allow for more than 9 arguments.

Change-Id: I62f78eabc8040b39f3ffdf21be175811e96b39af

This patch addresses issue #79, which is a regression since commit
28de670c "Fix RD bug." If the coded error value is zero, the iiratio
calculation effectively multiplies by 1000000 by the
DOUBLE_DIVIDE_CHECK macro. This can result in a value larger than
INT_MAX, giving a negative ratio. Since the error values are
conceptually unsigned (though they're stored in a double) this patch
makes the iiratio values unsigned, which allows the clamping to work
as expected.

Typo caused C version of 16x16x4 SAD to be called when built with
--disable-runtime-cpu-detect.

Change-Id: I0fe6fa67280b3a5f13acb3c8ed914f039aaaf316

ssim.c comiles in a huge (512M) amount of global scratch space. Allocating
this data on the heap would be a better solution, but this file doesn't
need to be built at all in most cases, so as a first pass, disable it
except when doing opsnr.stt output (--enable-psnr).

Change-Id: I320d812f6d652a12516a16b52295ebff20b5bd42

XMM6 to XMM15 are non-volatile on Windows x64 ABI.  We have to save
these registers.

Change-Id: I4676309f1350af25c8a35f0c81b1f0499ab99076

(Thanks to Ronald S. Bultje)

 low and high Q ends.

No good reason to be tricky here. I don't know why 'break' occurred to me
as the natrual replacement for the 'return', but an if/else block is
definitely clearer.

Change-Id: I08a336307afeb0dc7efa494b37398f239f66c2cf

The new scheme introduced in I68d35a2f did not clamp chroma MVs in the SPLITMV
 case, and clamped them incorrectly (to the luma plane bounds) in every other
 case.
Because chroma MVs are computed from the luma MVs before clamping occurs, they
 could still point outside of the frame buffer and cause crashes.
This clamping happens outside of the MV prediction loop, and so should not
 affect bitstream decoding.

Vestigial.

Change-Id: Iffa9e6d5ba5199b136d7549890101da17c11e3c3

Restructure vp8_sixtap_predict functions to eliminate extra 5-line
calculation while doing first-pass only. Also, combline functions
to eliminate usage of intermediate buffer. This gives decoder a 3%
performance gain on my test clips.

Change-Id: I13de49638884d1a57d0855c63aea719316d08c1b

This patch removes the secondary MV clamping from the MV decoder. This
behavior was consistent with limits placed on non-split MVs by the
reference encoder, but was inconsistent with the MVs generated in the
split case.

The purpose of this secondary clamping was only to prevent crashes on
invalid data. It was not intended to be a behaviour an encoder could or
should rely on. Instead of doing additional clamping in a way that
changes the entropy context, the secondary clamp is removed and the
border handling is made implmentation specific. With respect to the
spec, the border is treated as essentially infinite, limited only by
the clamping performed on the near/nearest reference and the maximum
encodable magnitude of the residual MV.

This does not affect any currently produced streams.

Change-Id: I68d35a2fbb51570d6569eab4ad233961405230a3

Change-Id: I7ccc580410bea096a70dce0cc3d455348d4287c5

Change-Id: I180a05ad57ee6164a6a169ee08e8affd09671eee

Change-Id: I944035e720ef834561a9da0d723879a4f787312c

This patch adds support for building shared libraries when configured
with the --enable-shared switch.

Building DLLs would require more invasive changes to the sample
utilities than I want to make in this patch, since on Windows you can't
use the address of an imported symbol in a static initializer. The best
way to work around this is proably to build the codec interface mapping
table with an init() function, but dll support is of questionable value
anyway, since most windows users will probably use a media framework
lib like webmdshow, which links this library in staticly.

Change-Id: Iafb48900549b0c6b67f4a05d3b790b2643d026f4

Change-Id: Ieebea089095d9073b3a94932791099f614ce120c

Tests on x86 showed this function costed 2.7% of total decoding time
because of all the memory reads/writes. After modification, it only
costs about 0.7% of decoding time, which gives a 2% gain.

Change-Id: I5003ee30b6dc6dea0bfa42a6ad7e7c22fcc7b215

The intra prediction needs one line above at the top edge.

it is used by vp8/encoder/onyx_if.c

fixes:
vp8/encoder/onyx_if.c:5189: warning: implicit declaration of function
‘vp8_deblock’

Change-ID: I093abe6094589a0d73f6ca85b825678a19e68285

This is to accommodate output packets for both compressed
data and psnr stats. For each frame, there are at least
one packet for compressed data and one for psnr stats. For
a max lag of 25, 64 is large enough to cover all lagged
frames at the end of encoding.

Change-Id: If20787fbc86f96e1aa16a3ccf2adc93e6c1e3d5f

This file was moved to vpx/, currently this reference breaks the MSVS build.

Change-Id: I2c90a7a1c09cb66055e3daf84facefcaee1085a1

is constructed from multiple source frames

Change-Id: I2e026c10d02b071b401c9fe8ab8dcfc0ac306103

The PLANE_{PACKED,Y,U,V,ALPHA} macros should be renamed to be within the
VPX_ namespace.

Fixes #27

This renames the vpx_codec/ directory to vpx/, to allow applications
to more consistently reference these includes with the vpx/ prefix.
This allows the includes to be installed in /usr/local/include/vpx
rather than polluting the system includes directory with an
excessive number of includes.

Change-Id: I7b0652a20543d93f38f421c60b0bbccde4d61b4f

Avoid an potential name clashes and match other external types.
s/IMG_FMT/VPX_$&/g
s/img_fmt/vpx_$&/g

Change-Id: Ia7ad5bbb6424416b37e71e5f5eb1eca31c3c707f

This doesn't play well with autotools, and the preprocessor magic is
confusing and unhelpful in the vp8-only context.

Change-Id: I2fcb57e6eb7876ecb58509da608dc21f26077ff1

Visual c++ compiler uses xmm registers for floating point
operations for 64 bit architecture, therefore its calling
convention requires the preservation of xmm6-xmm15 in any
function that have used these registers. However, the sse2
functions, that were originally written for 32 bit windows,
may have used xmm6 and xmm7 without preserving the content.
In this particular case, the compiler used xmm6 to save
the variable "two_pass_min_rate", the value of the variable
is mucked up by our sse2 optimized loop filter functions,
hence the results of release/debug mismatching.