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
generic version got fixed, but not the arm version. fixes:
vp8/encoder/arm/mcomp_arm.c: In function 'vp8_full_search_sadx3':
vp8/encoder/arm/mcomp_arm.c:1208: warning: pointer targets in passing
argument 5 of 'fn_ptr->sdx3f' differ in signedness
vp8/encoder/arm/mcomp_arm.c:1208: note: expected 'unsigned int *' but
argument is of type 'int *'
and another unsigned change to keep the files similar
Change-Id: I1b6255dc3a03b90394a791ee0d15d8167d9454db
vp8_diamond_search_sadx4 isn't used in arm because there is no
corrosponding sdx4df as in x86. rather than keep it in sync with
../mcomp.c, delete it
vp8_hex_search had the original, more readable/understandable code if`d
out. it's also available in ../mcomp.c, so remove the dead copy
Change-Id: Ia42aa6e23b3a2e88040f467280befec091ec080e
when a subsequent frame is encoded as an alt reference frame, it is
unlikely that any mb in current frame will be used as reference for
future frames, so we can enable quantization optimization even when
the RD constant is slightly rate-biased. The change has an overall
benefit between 0.1% to 0.2% bit savings on the test sets based on
vpxssim scores.
Change-Id: I9aa7bc5cd573ea84e3ee655d2834c18c4460ceea
../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
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 dcd29e3,
and by changing the quantizer range control in commit 305be4e.
Change-Id: I5cce5da0dbc2d22f7d79ee48149f01e868a64802
This uses MB variance to change the RDO weight for mode decision
and quantization.
Activity is normalized against the average for the frame, which is
currently tracked using feed-forward statistics.
This could also be used to adjust the quantizer for the entire
frame, but that requires more extensive rate control changes.
This does not yet attempt to adapt the quantizer within the frame,
but the signaling cost means that will likely only be useful at
very high rates.
Change-Id: I26cd7c755cac3ff33cfe0688b1da50b2b87b9c93
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
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
Raised by Lei Yang, the Y plane stride was used for UV blocks.
This is clearly a typo. But as the comments in the code suggested
that this port of code has not been used yet, so the typo should
not have created any damage yet.
Change-Id: Iea895edc17469a51c803a8cc6d0fce65a1a7fc2f
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
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
