Commit Graph

112 Commits

Author SHA1 Message Date
John Koleszar
f54d561fa8 Merge remote branch 'internal/upstream' into HEAD 2011-08-16 00:05:05 -04:00
John Koleszar
e96131705a Revert "Improved 1-pass CBR rate control"
This reverts commit b5ea2fbc2c. Further
testing showed noticable keyframe popping in some cases, reverting this
for now to give time for a proper fix.

Conflicts:

	vp8/encoder/onyx_if.c
	vp8/encoder/ratectrl.c

Change-Id: I159f53d1bf0e24c035754ab3ded8ccfd58fd04af
2011-08-12 14:51:36 -04:00
John Koleszar
9fbb1d4350 Merge remote branch 'origin/master' into experimental
Change-Id: I1ae82458536ba2f0969e1bea78f41cd16fe96b79
2011-07-27 00:05:06 -04:00
James Zern
b45065d38b cosmetics: consistently use [u]int64_t
Removes mixed usage of (unsigned) long long and INT64.
Fixes Issue #208.

Change-Id: I220d3ed5ce4bb1280cd38bb3715f208ce23cf83a
2011-07-26 11:34:36 -07:00
John Koleszar
2614b77fcb Merge remote branch 'origin/master' into experimental
Change-Id: Ida9204624fe3fb99fed1b149d1f88159480fdd83
2011-07-19 00:05:11 -04:00
John Koleszar
b5ea2fbc2c Improved 1-pass CBR rate control
This patch attempts to improve the handling of CBR streams with
respect to the short term buffering requirements. The "buffer level"
is changed to be an average over the rc buffer, rather than a long
running average. Overshoot is also tracked over the same interval
and the golden frame targets suppressed accordingly to correct for
overly aggressive boosting.

Testing shows that this is fairly consistently positive in one
metric or another -- some clips that show significant decreases
in quality have better buffering characteristics, others show
improvenents in both.

Change-Id: I924c89aa9bdb210271f2e03311e63de3f1f8f920
2011-07-18 11:48:05 -04:00
John Koleszar
6058c9ce0c Merge remote branch 'origin/master' into experimental
Change-Id: Ica63d16cb39e2d65a3414f0b9f86c8a64112dfa3
2011-07-09 00:05:09 -04:00
Yunqing Wang
40991faeae Adjust full-pixel clamping and motion vector limit calculation
Do mvp clamping in full-pixel precision instead of 1/8-pixel
precision to avoid error caused by right shifting operation.
Also, further fixed the motion vector limit calculation in change:
b748045470

Change-Id: Ied88a4f7ddfb0476eb9f7afc6ceeddbf209fffd7
2011-07-08 11:34:28 -04:00
John Koleszar
54c3637828 Merge remote branch 'origin/master' into experimental
Change-Id: Iaf6e9e14d0cfe5cef3895cfb68524d51139a6d23
2011-07-01 00:05:12 -04:00
Yunqing Wang
ae8aa836d5 Merge "Copy macroblock data to a buffer before encoding it" 2011-06-30 11:14:24 -07:00
John Koleszar
6251e9e5ce Merge remote branch 'origin/master' into experimental
Change-Id: I35c9ca116aecd0d03e762942d9cf1289edb4f23d
2011-06-30 00:05:10 -04:00
Paul Wilkins
11694aab66 Change to arf boost calculation.
In this commit I have added an experimental function
that tests prediction quality either side of a central position
to calculate a suggested boost number for an ARF frame.

The function is passed an offset from the current position and
a number of frames to search forwards and backwards.
It returns a forward, backward and compound boost number.

The new code can be deactivated using #define NEW_BOOST 0

In its current default state the code searches forwards and backwards
from the proposed  position of the next alt ref.

The the old code used a boost number calculated by scanning forward
from the previous GF up to the proposed alt ref frame position.

I have also added some code to try and prevent placement of a gf/arf
where there is a brief flash.

Change-Id: I98af789a5181148659f10dd5dd2ff2d4250cd51c
2011-06-29 18:01:25 +01:00
John Koleszar
1ec4e27095 Merge remote branch 'origin/master' into experimental
Change-Id: I689f4624a53184a72258df575305eb1aa97e61ca
2011-06-27 09:39:56 -04:00
Yunqing Wang
0d87098e08 Copy macroblock data to a buffer before encoding it
I got this idea from Pascal (Thanks). Before encoding a macroblock,
copy it to a 16x16 buffer, and then read source data from there
instead. This will help keep the source data in cache, and help
with the performance.

Change-Id: Id05f4cb601299150511d59dcba0ae62c49b5b757
2011-06-23 13:54:02 -04:00
John Koleszar
db67dcba6a Revert "Reduce overshoot in 1 pass rate control"
This reverts commit 212f618373.

Further testing shows that the overshoot accumulation/damping is too
aggressive on some clips. Allowing the accumulated overshoot to
decay and limiting to damping to golden frames shows some promise.
But some clips show significant overshoot in the buffer window, so
I think this still needs work.

Change-Id: Ic02a9ca34f55229f9cc04786f4fab54cdc1a3ef5
2011-06-23 11:52:12 -04:00
Johann
e18d7bc230 Merge remote branch 'origin/master' into experimental
Conflicts:
	vp8/encoder/encodeframe.c
	vp8/encoder/rdopt.c

Change-Id: I8bab720889ac652361abdedfe2cc91a89742cb30
2011-06-17 14:56:27 -04:00
Ronald S. Bultje
87fd66bb0e Assign boost to GF bit allocation if past frame had no ARF.
Modify the second-pass code to provide a full golden-frame (GF) bit
allocation boost if the past GF group (GFG) had no alt-ref frame (ARF),
even if the current GFG does contain and ARF.

This mostly has no effect on clips, since switching ARFs on/off between
GFGs is not very common. Has a positive effect on e.g. cheer (+0.45 SSIM
at 600kbps) and football (+0.25 SSIM at 600kbps), particularly at high
bitrates. Has a negative effect (-0.04 SSIM at 300kbps) at pamphlet,
which appears only marginally related to this patch, and crew (-0.1 SSIM
at 700kbps).

Change-Id: I2e32899638b59f857e26efeac18a82e0c0b77089
2011-06-16 13:01:27 -04:00
John Koleszar
eb645abeac Merge "Disable specialcase for last frames if the sequence contains ARFs." 2011-06-16 09:56:05 -07:00
Ronald S. Bultje
299193dd1c Disable specialcase for last frames if the sequence contains ARFs.
firstpass.c contains some rate adjustment code that assures that the
last few frames in a sequence abide by rate limits. If the second-to-
last group of frames contains an alt-ref frame (ARF), the last golden
frame (GF) is zero bytes, and we will thus spend a ridiculously high
number of bits on regular P-frames trying to hit the target rate. This
does slightly enhance the quality of these last few frames, but has
no perceptual value (other than hitting the target rate).

Disabling this code means we consistently (slightly) undershoot the
target rate and consequently do worse on the last few frames of a
clip, which is particularly noticeable for small clips. The quality-
per-bitrate is generally better, ~0.2% better overall on derf-set,
especially on clips such as garden, tennis, foreman at low bitrates.
Has a negative effect on hallmonitor at high bitrates.

Change-Id: I1d63452fef5fee4a0ad2fb2e9af4c9f2e0d86d23
2011-06-15 09:47:00 -04:00
Tero Rintaluoma
9909047461 Fix RT only build
Moved encode_intra function from firstpass.c to encodeintra.c to
prevent linking problem in real-time only build. Also changed name
of the function to vp8_encode_intra because it is not a static.

Change-Id: Ibf3c6c1de3152567347e5fbef47d1d39564620a5
2011-06-14 13:39:06 +03:00
Paul Wilkins
4e81a68af7 Further activity masking changes:
Some further re-structuring of activity masking code.
Still has various experimental switches.
Supports a metric based on intra encode.
Experimental comparison against a fixed activity target  rather
than a frame average, for altering rd and zbin.

Overall the SSIM performance is similar  to TT's original
code but there is a much smaller PSNR hit of circa
0.5% instead of 3.2%

Change-Id: I0fd53b2dfb60620b3f74d7415e0b81c1ac58c39a
2011-06-08 16:03:37 +01:00
John Koleszar
5c166470a5 Merge "Reduce overshoot in 1 pass rate control" 2011-06-07 12:30:37 -07:00
John Koleszar
6c8205d37e Merge remote branch 'origin/master' into experimental
Change-Id: I67cc3b490266f958a1b3a935ec08ee19d7b4f6a0
2011-06-07 00:05:07 -04:00
John Koleszar
824e9410c6 Merge "Don't allow very short GF groups even when the GF is predicted from an ARF." 2011-06-06 07:02:29 -07:00
John Koleszar
2c308f36fc Merge remote branch 'origin/master' into experimental
Change-Id: I81ac427cbaf3d0865df4acef3e0bfc2e95556c4b
2011-06-04 00:05:13 -04:00
John Koleszar
212f618373 Reduce overshoot in 1 pass rate control
This patch attempts to reduce the peak bitrate hit by the encoder
when using small buffer windows.

Tested on the CIF set over 200-500kbps using these settings:

  --buf-sz=500 --buf-initial-sz=250 --buf-optimal-sz=250 \
  --undershoot-pct=100

Two pass encodes were tested at best quality. One pass encodes were
tested only at realtime speed 4:

  --rt --cpu-used=-4

The peak datarate (over the specified 500ms window) was measured
for each encode, and averaged together to get metric for
"average peak," computed as SUM(peak)/SUM(target). This patch
reduces the average peak datarate as follows:

  One pass:
    baseline:   1.29715
    this patch: 1.23664

  Two pass:
    baseline:   1.32702
    this patch: 1.37824

This change had a positive effect on our quality metrics as well:

  One pass CBR:
                    Min  / Mean / Max (pct)
    Average PSNR    -0.42 / 2.86 / 27.32
    Overall PSNR    -0.90 / 2.00 / 17.27
    SSIM            -0.05 / 3.95 / 37.46

  Two pass CBR:
                    Min  / Mean / Max (pct)
    Average PSNR    -4.47 / 4.35 / 35.99
    Overall PSNR    -3.40 / 4.18 / 36.46
    SSIM            -4.56 / 6.98 / 53.67

  One pass VBR:
                    Min  / Mean / Max (pct)
    Average PSNR    -5.21 /  0.01 / 3.30
    Overall PSNR    -8.10 / -0.38 / 1.21
    SSIM            -7.38 / -0.11 / 3.17
    (note: most values here were close to the mean, there were a few
     outliers on files that were very sensitive to golden frame size)

  Two pass VBR:
                    Min  / Mean / Max (pct)
    Average PSNR    0.00 / 0.00 / 0.00
    Overall PSNR    0.00 / 0.00 / 0.00
    SSIM            0.00 / 0.00 / 0.00

Neither one pass or two pass CBR mode adheres particularly strictly
to the short term buffer constraints, and two pass is less
consistent, even in the baseline commit. This should be addressed
in a later commit. This likely will hurt the quality numbers, as it
will have to reduce the burstiness of golden frames.

Aside: My work on this commit makes it clear that we need to make
rate control modes "pluggable", where you can easily write a new
one or work on one in isolation.

Change-Id: I1ea9a48f2beedd59891f1288aabf7064956b4716
2011-06-03 16:38:11 -04:00
Scott LaVarnway
8c5b73de2a Merge "Removed B_MODE_INFO" 2011-06-03 08:32:30 -07:00
John Koleszar
480f025754 Merge remote branch 'origin/master' into experimental
Change-Id: I7395011ef6c1783110ebd06305ca3d908d2457bb
2011-06-03 00:05:21 -04:00
Scott LaVarnway
773768ae27 Removed B_MODE_INFO
Declared the bmi in BLOCKD as a union instead of B_MODE_INFO.
Then removed B_MODE_INFO completely.

Change-Id: Ieb7469899e265892c66f7aeac87b7f2bf38e7a67
2011-06-02 13:46:41 -04:00
Ronald S. Bultje
9f002bee53 Don't allow very short GF groups even when the GF is predicted from an ARF.
This is basically a slightly modified version of the previous patch,
and it has a moderately positive effect (SSIM/PSNR both +0.08% avg
on derf-set). Most clips show no change, except waterfall/coastguard,
each ~ +0.8% SSIM/PSNR. You can see similar effects in other clips
by shortening their length to terminate at a very short last group
of frames.

Change-Id: I7a70de99ca1f9fe6a8b6ca7a6e30e8a4b64383e4
2011-06-02 09:14:51 -07:00
Yaowu Xu
5b2fb32961 further clean up of errorperbit and sadperbit
this commit makes the usage errorperbit and sadperbit consistent for
encoding modes and passes. Removed all different magic weight factors
associated with errorperbit. Now 1/2 is used for both sadperbit16 and
sadperbit4, the /2 operation is merged into initializations of the 2
variables.

Tests on cif set show .23%, 0.18% and 0.19% gain by avg psnr, overall
psnr and ssim respectively.

Change-Id: Ifa285c3e065ce0a5a77addfc9f95aabf54ee270d
2011-06-01 14:44:06 -07:00
John Koleszar
4d240d1eae Merge remote branch 'origin/master' into experimental
Change-Id: I90a1d0095712e0474b0c03773b57376911027fc6
2011-05-21 00:05:14 -04:00
John Koleszar
8196cc85f8 Merge "cleanup: collect twopass variables" 2011-05-20 11:20:44 -07:00
Yaowu Xu
1fbc81a970 Merge "revise two function definitions with less parameters" 2011-05-20 07:45:42 -07:00
Yaowu Xu
a4c69e9a0f revise two function definitions with less parameters
Change-Id: Ia96e5bf915e4d3c0ac9c1795114bd9e5dd07327a
2011-05-19 19:06:03 -07:00
John Koleszar
63cb1a7ce0 cleanup: collect twopass variables
This patch collects the twopass specific memebers of VP8_COMP into a
dedicated struct. This is a first step towards isolating the two pass
rate control and aids readability by decorating these variables with
the 'twopass.' namespace. This makes it clear to the reader in what
contexts the variable will be valid, and is a hint that a section of
code might be a good candidate to move to firstpass.c in later
refactoring. There likely will be other rate control modes that need
their own specific data as well.

This notation is probably overly verbose in firstpass.c, so an
alternative would be to access this struct through a pointer like
'rc->' instead of 'cpi->firstpass.' in that file. Feel free to make
a review comment to that effect if you prefer.

Change-Id: I0ab8254647cb4b493a77c16b5d236d0d4a94ca4d
2011-05-19 17:26:09 -04:00
John Koleszar
048497720c Remove unused members of VP8_COMP
Various members that were either completely unreferenced or written
and not read.

Change-Id: Ie41ebac0ff0364a76f287586e4fe09a68907806e
2011-05-19 15:49:09 -04:00
John Koleszar
71a0eaf33c Merge remote branch 'origin/master' into experimental
Change-Id: Idf2dead51d2936984eb9827dd6d2cb704817f4c8
2011-05-13 00:05:14 -04:00
Scott LaVarnway
6b25501bf1 Using int_mv instead of MV
The compiler produces better assembly when using int_mv
for assignments.  The compiler shifts and ors the two 16bit
values when assigning MV.

Change-Id: I52ce4bc2bfbfaf3f1151204b2f21e1e0654f960f
2011-05-12 11:08:16 -04:00
John Koleszar
b4bb910b57 Merge remote branch 'origin/master' into experimental
Change-Id: Iacd40d38693f433cd25b071fc8420f563b242696
2011-04-15 00:05:09 -04:00
John Koleszar
88841f1059 Refactor lookahead ring buffer
This patch cleans up the source buffer storage and copy mechanism to
allow access through a standard push/pop/peek interface. This approach
also avoids an extra copy in the case where the source is not a
multiple of 16, fixing issue #102.

Change-Id: I05808c39f5743625cb4c7af54cc841b9b10fdbd9
2011-04-13 14:26:45 -04:00
John Koleszar
d64aa018be Merge remote branch 'origin/master' into experimental
Change-Id: Ied0fedb05342dead6d34740209cf75997f155e72
2011-04-06 00:05:10 -04:00
John Koleszar
a6be45c9ca Merge remote branch 'origin/master' into experimental
Change-Id: I53be500dad1a98e21d0a28f9e07761d8d03fdcf6
2011-04-05 00:05:10 -04:00
Scott LaVarnway
f212a98ee7 Fixed unused variable warnings for firstpass.c
Change-Id: I8378a9a541ade2f098359a7b20fa08e6c1596d80
2011-04-04 14:18:31 -04:00
Yunqing Wang
3d6815817c Use full-pixel MV in mvsadcost calculation
MV sad cost error is only used in full-pixel motion search,
which only need full-pixel resolution instead of quarter-pixel
resolution. This change reduced mvsadcost table size, and
removed unneccessary pamameter passing since this table is
constant once it is generated.

Change-Id: I9f931e55f6abc3c99011321f1dfb2f3562e6f6b0
2011-04-01 16:41:58 -04:00
John Koleszar
5f6db3591c Merge remote branch 'origin/master' into experimental
Conflicts:
	vp8/encoder/ratectrl.c
	vp8/encoder/rdopt.c

Change-Id: I4cc58acb432662d2c47aceda1680e52982adbc06
2011-03-23 00:24:25 -04:00
John Koleszar
429dc676b1 Increase static linkage, remove unused functions
A large number of functions were defined with external linkage, even
though they were only used from within one file. This patch changes
their linkage to static and removes the vp8_ prefix from their names,
which should make it more obvious to the reader that the function is
contained within the current translation unit. Functions that were
not referenced were removed.

These symbols were identified by:

  $ nm -A libvpx.a | sort -k3 | uniq -c -f2 | grep ' [A-Z] ' \
    | sort | grep '^ *1 '

Change-Id: I59609f58ab65312012c047036ae1e0634f795779
2011-03-17 20:53:47 -04:00
John Koleszar
eeb8c8004e Merge remote branch 'origin/master' into experimental
Conflicts:
	vp8/encoder/onyx_if.c

Change-Id: I230b63cef209cd1ac98357729a91ec07597756bd
2011-03-14 08:48:44 -04:00
John Koleszar
e34e417d94 Merge "Fix incorrect macroblock counts in twopass rate control" 2011-03-11 06:06:04 -08:00
John Koleszar
314631ca61 Merge remote branch 'origin/master' into experimental
Change-Id: Ibc4a75dbbc8b35ce298477e055e5a88df080d4b3
2011-03-11 00:05:09 -05:00