Commit Graph

44 Commits

Author SHA1 Message Date
John Koleszar
f56918ba9c Remove legacy integer types
Remove BOOL, INTn, UINTn, etc, in favor of C99-style fixed width
types.

Change-Id: I396636212fb5edd6b347d43cc940186d8cd1e7b5
2011-12-22 09:58:40 -08:00
John Koleszar
e542627b0c Merge "fix: active_worst_quality could be set above 127" 2011-12-14 11:22:00 -08:00
James Berry
f8b431c334 fix: active_worst_quality could be set above 127
add check to set active_worst_quality to 127 if it
is set above 127

Change-Id: I7db353d5c1b1c8516a116542b6ed21c0110bb512
2011-12-13 14:58:59 -05:00
Jim Bankoski
6de67cd6e8 vp8e - entropy stats per frame type
Change-Id: I4168eb6ea22ae541471738a7a3453e7d52059275
2011-12-09 16:56:18 -08:00
John Koleszar
e55974bf86 Speed selection support for disabled reference frames
There was an implicit reference frame test order (typically LAST,
GOLD, ARF) in the mode selection logic, but this doesn't provide the
expected results when some reference frames are disabled. For
instance, in real-time mode, the speed selection logic often disables
the ARF modes. So if the user disables the LAST and GOLD frames, the
encoder was always choosing INTRA, when in reality searching the ARF
in this case has the same speed penalty as searching LAST would have
had.

Instead, introduce the notion of a reference frame search order. This
patch preserves the former priorities, so if a frame is disabled, the
other frames bump up a slot to take its place. This patch lays the
groundwork for doing something smarter in the frame test order, for
example considering temporal distance or looking at the frames used by
nearby blocks.

Change-Id: I1199149f8662a408537c653d2c021c7f1d29a700
2011-11-18 13:53:21 -08:00
Adrian Grange
b615a6d47f Third set of checks of buffer level against maximum buffer size
Additional check of buffer level to ensure it doesn't exceed the
maximum buffer size.

Change-Id: I1ba4f8b09bbec89646885040ff47470196af521e
2011-11-07 17:15:28 -08:00
Adrian Grange
217591fde5 Added rate-targeted temporal scalability
Added the ability to create rate-targeted, temporally
scalable, VP8 compatible bitstreams.

The application vp8_scalable_patterns.c demonstrates how
to use this capability. Users can create output bitstreams
containing upto 5 temporally separable streams encoded
as a single VP8 bitstream.
(previously abandoned as:
I92d1483e887adb274d07ce9e567e4d0314881b0a)

Change-Id: I156250a3fe930be57c069d508c41b6a7a4ea8d6a
2011-10-11 12:49:12 -07:00
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
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
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
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
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
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
abc9958c52 Don't override active_worst_quality in 2 pass
Commit db5057c introduced a bug in that the active_worst_quality
selected by the 2 pass rate controller was being overridden for key
frames, causing a severe quality loss.

Change-Id: I4865a6fbe3e94e9b4fb9271c7dd68b455d7b371d
2011-05-06 11:48:53 -04:00
John Koleszar
db5057c742 Refactor calc_iframe_target_size
Combine calc_iframe_target_size, previously only used for forced
keyframes, with calc_auto_iframe_target_size, which handled most
keyframes.

Change-Id: I227051361cf46727caa5cd2b155752d2c9789364
2011-04-26 16:55:35 -04:00
John Koleszar
81d2206ff8 Move pick_frame_size() to ratectrl.c
This is a first step in cleaning up the redundancies between
vp8_calc_{auto_,}iframe_target_size. The pick_frame_size() function is
moved to ratectrl.c, and made to be the primary interface. This means
that the various calc_*_target_size functions can be made private.

Change-Id: I66a9a62a5f9c23c818015e03f92f3757bf3bb5c8
2011-04-26 16:49:54 -04:00
John Koleszar
fd6da3b2e7 Fix duplicate vp8_compute_frame_size_bounds
Likely introduced by a bad automatic merge from gerrit.

Change-Id: I0c6dd6ec18809cf9492f524d283fa4a3a8f4088b
2011-04-25 14:30:57 -04:00
John Koleszar
1f32b1489c Merge "Remove unused functions" 2011-04-25 11:05:00 -07:00
John Koleszar
47bc1c7013 Remove unused functions
Remove estimate_min_frame_size() and calc_low_ss_err(), as they are
never referenced.

Change-Id: I3293363c14ef70b79c4678ca27aa65b345077726
2011-04-25 13:54:23 -04:00
John Koleszar
cfbfd39de8 Merge "Change rc undershoot/overshoot semantics" 2011-04-25 10:49:32 -07:00
James Berry
8d5ce819dd bug fix possible keyframe context divide by zero
vp8_adjust_key_frame_context() divides by
estimate_keyframe_frequency() which can
return 0 in the case where --kf-max-dist=0.

Change-Id: Idfc59653478a0073187cd2aa420e98a321103daa
2011-04-25 12:16:36 -04:00
John Koleszar
ad6a8ca58b Remove unused kf rate variables
Remove tot_key_frame_bits and prior_key_frame_size[] as they were
tracked but never used. Remove intra_frame_target, as it was only
used to initialize prior_key_frame_size.

Refactor vp8_adjust_key_frame_context() some to remove unnecessary
calculations.

Change-Id: Icbc2c83d2b90e184be03e6f9679e678f3a4bce8f
2011-04-19 16:14:57 -04:00
John Koleszar
c99f9d7abf Change rc undershoot/overshoot semantics
This patch changes the rc_undershoot_pct and rc_overshoot_pct controls
to set the "aggressiveness" of rate adaptation, by limiting the
amount of difference between the target buffer level and the actual
buffer level which is applied to the target frame rate for this frame.

This patch was initially provided by arosenberg at logitech.com as
an attachment to issue #270. It was modified to separate these controls
from the other unrelated modifications in that patch, as well as to
use the pre-existing variables rather than introducing new ones.

Change-Id: Id542e3f5667dd92d857d5eabf29878f2fd730a62
2011-04-12 20:49:33 -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
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
Paul Wilkins
2ae91fbef0 1 Pass CQ and VBR bug fixes
Issue 291 highlighted  the fact that CQ mode was not working
as expected in 1 pass mode,

This commit fixes that specific problem but in so doing I also
uncovered an overflow issue in the VBR code for 1 pass and
some data values not being correctly initialized.

For some clips (particularly short clips), the resulting
improvement is dramatic.

Change-Id: Ieefd6c6e4776eb8f1b0550dbfdfb72f86b33c960
2011-03-11 10:59:34 -05:00
John Koleszar
02321de0f2 Fix relative include paths
Allow compiling without adding vp8/{common,encoder,decoder} to the
include paths.

Change-Id: Ifeb5dac351cdfadcd659736f5158b315a0030b6c
2011-02-10 15:09:44 -05:00
Paul Wilkins
e0846c9c8c CQ Mode
The merge includes hooks to for CQ mode and other code
changes merged from the test branch.

CQ mode attempts to maintain a more stable quantizer within a clip
whilst also trying to adhere to a guidline maximum bitrate.

The existing target data rate parameter is used to specify the
guideline maximum bitrate.

A new parameter allows the user to specify a target CQ level.

For normal (non kf/gf/arf) frames, the quantizer will not drop BELOW the
user specified value (0-63). However, in some cases the encoder may
choose to impose a target CQ that is above that specified by the user,
if it estimates that consistent use of the target value is not compatible
with guideline maximum bitrate.

Change-Id: I2221f9eecae8cc3c431d36caf83503941b25e4c1
2011-01-07 18:46:29 +00:00
Patrik Westin
8534071de0 Fix for manual Golden frame frequency
When auto_golden wasn't set it forced all frames to be a golden
frame. Now the manual configured frequency is adhered to.

Change-Id: I360acac9bc487db0d9c4d4da6ee41f70c227c539
2010-12-06 09:53:41 -05:00
Fritz Koenig
9c8ad79fdc Set refresh_alt_ref_frame on keyframe encode.
On a keyframe alt ref and golden are refreshed.  The flag was
not being set and so on the frame after a keyframe, motion
search would occur on the alt ref frame.  This is not necessary
because the alt ref frame identical to the last frame in this
scenario.

Handle corner case where a forward alt-ref frame is put
directly after a keyframe.

Change-Id: I9be4cf290d694f8cf2f9a31852014b5ccf1504d3
2010-12-01 12:48:22 -08:00
Paul Wilkins
ad6150f769 Recalibration of bits per MB tables
The baseline bits per MB prediction tables have been
re calibrated based on the assumption that bits per mb
is inversely proportional to the quantizer level.

Change-Id: Ibd355c7acac4b8053dda1baf1032fe35f11da7f7
2010-11-22 13:17:35 +00:00
Jim Bankoski
39f41a4f36 safety check to avoid divide by 0s 2010-10-14 16:19:06 -04:00
John Koleszar
c2140b8af1 Use WebM in copyright notice for consistency
Changes 'The VP8 project' to 'The WebM project', for consistency
with other webmproject.org repositories.

Fixes issue #97.

Change-Id: I37c13ed5fbdb9d334ceef71c6350e9febed9bbba
2010-09-09 10:01:21 -04:00
Paul Wilkins
c239a1b67c Improved Force Key Frame Behaviour
These changes improve the behaviour of the code with
forced key frames sent in by a calling application.

The sizing of the frames is still suboptimal for two pass in
particular but the behaviour is much better than it was.

Change-Id: I35fae610c67688ccc69d11f385e87dfc884e65a1
2010-08-31 14:32:40 -04:00
Scott LaVarnway
99f46d62d9 Moved gf_active code to encoder only
The gf_active code is only used by the encoder, so it was moved from
common and decoder.

Change-Id: Iada15acd5b2b33ff70c34668ca87d4cfd0d05025
2010-08-11 11:54:25 -04:00
Paul Wilkins
bf18069ceb Rate control fix for ARNR filtered frames.
Previously we had assumed that it was necessary to give a full frame's
bit allocation to the alt ref frame if it has been created through temporal
filtering. This is not the case. The active max quantizer control
insures that sufficient bits are allocated if needed and allocating a
full frame's worth of bits creates an excessive overhead for the ARF.

Change-Id: I83c95ed7bc7ce0e53ccae6ff32db5a97f145937a
2010-07-19 14:10:07 +01:00
John Koleszar
94c52e4da8 cosmetics: trim trailing whitespace
When the license headers were updated, they accidentally contained
trailing whitespace, so unfortunately we have to touch all the files
again.

Change-Id: I236c05fade06589e417179c0444cb39b09e4200d
2010-06-18 13:06:11 -04:00
Paul Wilkins
6702a4047d Correct comment 2010-06-08 09:59:57 +01:00
John Koleszar
09202d8071 LICENSE: update with latest text
Change-Id: Ieebea089095d9073b3a94932791099f614ce120c
2010-06-04 16:19:40 -04:00
Paul Wilkins
ea4b6f18cb Correct bit allocation when the alternative reference frame
is constructed from multiple source frames

Change-Id: I2e026c10d02b071b401c9fe8ab8dcfc0ac306103
2010-05-25 14:26:26 +01:00
Paul Wilkins
c012d63ec9 Fixed incorrect casts that broke rate control in some situations. 2010-05-20 16:49:39 +01:00
Pavol Rusnak
0fc9abfbfd remove unneeded variables 2010-05-19 21:15:32 +02:00
John Koleszar
0ea50ce9cb Initial WebM release 2010-05-18 11:58:33 -04:00